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Journal articles on the topic 'Chip-based sensor'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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Kim, Jong-Man, Young Bok Lee, Doo Ho Yang, Ji-Seok Lee, Gil Sun Lee, and Dong June Ahn. "A Polydiacetylene-Based Fluorescent Sensor Chip." Journal of the American Chemical Society 127, no. 50 (2005): 17580–81. http://dx.doi.org/10.1021/ja0547275.

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Fei, Ji You, Hua Li, and Bin Gao. "Based on the Single Chip Microcomputer Atmega168 Robot Control System Design." Applied Mechanics and Materials 341-342 (July 2013): 700–703. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.700.

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based on the single chip microcomputer atmega168 robot control system design This paper introduces using micro controller, many sensors, such as ultrasonic distance measuring sensor, infrared range sensor, infrared obstacle avoidance sensor, and also using motor driving module and dc motor design a robot which can operate independently, The robot can detect its own attitude, obstacles, competition venues edge automatically, then according to signal which the sensor feedback to micro controller controlling the motor produce pushing or avoid action. In the design of the robot, we using the sensor redundancy design positioning obstacles in front of robot, we take full advantage of the proximity detector features in order to make the robot highly efficient and stable operation. The robot in the experiment operating in good condition, and it has reference significance for robot design.

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Nekrasov, Kireev, Emelianov, and Bobrinetskiy. "Graphene-Based Sensing Platform for On-Chip Ochratoxin A Detection." Toxins 11, no. 10 (2019): 550. http://dx.doi.org/10.3390/toxins11100550.

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In this work, we report an on-chip aptasensor for ochratoxin A (OTA) toxin detection that is based on a graphene field-effect transistor (GFET). Graphene-based devices are fabricated via large-scale technology, allowing for upscaling the sensor fabrication and lowering the device cost. The sensor assembly was performed through covalent bonding of graphene’s surface with an aptamer specifically sensitive towards OTA. The results demonstrate fast (within 5 min) response to OTA exposure with a linear range of detection between 4 ng/mL and 10 pg/mL, with a detection limit of 4 pg/mL. The regeneration time constant of the sensor was found to be rather small, only 5.6 s, meaning fast sensor regeneration for multiple usages. The high reproducibility of the sensing response was demonstrated via using several recycling procedures as well as various GFETs. The applicability of the aptasensor to real samples was demonstrated for spiked red wine samples with recovery of about 105% for a 100 pM OTA concentration; the selectivity of the sensor was also confirmed via addition of another toxin, zearalenone. The developed platform opens the way for multiplex sensing of different toxins using an on-chip array of graphene sensors.

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Kilpijärvi, Joni, Niina Halonen, Maciej Sobocinski, et al. "LTCC Packaged Ring Oscillator Based Sensor for Evaluation of Cell Proliferation." Sensors 18, no. 10 (2018): 3346. http://dx.doi.org/10.3390/s18103346.

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A complementary metal-oxide-semiconductor (CMOS) chip biosensor was developed for cell viability monitoring based on an array of capacitance sensors utilizing a ring oscillator. The chip was packaged in a low temperature co-fired ceramic (LTCC) module with a flip chip bonding technique. A microcontroller operates the chip, while the whole measurement system was controlled by PC. The developed biosensor was applied for measurement of the proliferation stage of adherent cells where the sensor response depends on the ratio between healthy, viable and multiplying cells, which adhere onto the chip surface, and necrotic or apoptotic cells, which detach from the chip surface. This change in cellular adhesion caused a change in the effective permittivity in the vicinity of the sensor element, which was sensed as a change in oscillation frequency of the ring oscillator. The sensor was tested with human lung epithelial cells (BEAS-2B) during cell addition, proliferation and migration, and finally detachment induced by trypsin protease treatment. The difference in sensor response with and without cells was measured as a frequency shift in the scale of 1.1 MHz from the base frequency of 57.2 MHz. Moreover, the number of cells in the sensor vicinity was directly proportional to the frequency shift.

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Saboonchi, Hossain, and Didem Ozevin. "MetalMUMPs-Based Piezoresistive Strain Sensors for Integrated On-Chip Sensor Fusion." IEEE Sensors Journal 15, no. 1 (2015): 568–78. http://dx.doi.org/10.1109/jsen.2014.2347971.

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Pan, Hai Bin, Jian Ning Ding, Guang Gui Cheng, and Hui Juan Fan. "FEM Simulation of a Twin-Island Structure Chip in Piezoresistive Pressure Sensor." Key Engineering Materials 464 (January 2011): 208–12. http://dx.doi.org/10.4028/www.scientific.net/kem.464.208.

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In this paper a twin-island structure in piezoresistive pressure sensor based on MEMS technology has been presented, and a finite element mechanical model has been developed to simulate the static mechanical behavior of this twin-island structure sensor chip, especially the stress distributions in diaphragm of the sensor chip, which has a vital significance on piezoresistive pressure sensors’ sensitivity. The possible impacts of twin-island’s location and twin-island’s width on the stress distributions, as well as the maximum value of compressive stress and tensile stress, have been investigated based on numerical simulation with Finite Element Method (FEM). The simulation results show that twin-island’s location has great effect on the stress distributions in sensor chips’ diaphragms and the sensitivity of piezoresistive pressure sensors, compared with the twin-island’s width.

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Liu, Y., and H. W. M. Salemink. "Photonic crystal-based all-optical on-chip sensor." Optics Express 20, no. 18 (2012): 19912. http://dx.doi.org/10.1364/oe.20.019912.

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Bais, Badariah, Liang Wen Loh, Rosminazuin A. Rahim, and Majlis Burhanuddin Yeop. "Optimization of On-Chip Interface Circuit for MEMS Sensor Based on Micro-Cantilever." Advanced Materials Research 254 (May 2011): 13–16. http://dx.doi.org/10.4028/www.scientific.net/amr.254.13.

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Micro-cantilever has been proven as an outstanding platform for extremely sensitive chemical and biological sensors. MEMS cantilever-based sensor is becoming popular due to its high sensitivity, high selectivity, easy to fabricate and can be easily integrated with on-chip electronics circuitry. However, the interface circuit used in this kind of sensors typically has a very low resolution and this limits its capability in sensing the small signal generated by the micro-cantilever. One solution is by incorporating stress concentration regions (SCR) on the micro-cantilever which were found to improve the sensitivity of the sensor. This project will focus on optimizing the sensitivity of the micro-cantilever by modeling the micro-cantilever with the SCR technique. The model is then be verified by numerical simulations.

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Yang, Jian, Chen Qiu, Qi Long Wang, Ming Hua Wang, and Jian Yi Yang. "Tunable Microring Filter Based On-Chip Interrogator for Wavelength-Modulated Optical Sensor." Key Engineering Materials 562-565 (July 2013): 265–67. http://dx.doi.org/10.4028/www.scientific.net/kem.562-565.265.

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We demonstrated a novel approach for the interrogation of wavelength-modulated optical sensors. The interrogator is based on a tunable on-chip microring filter. By tuning the center wavelength of the microring filter, the center wavelength of the sensor can be readout by the corresponding tuning power. This approach has the potential of constructing a compact and cost-effective interrogator with good performance.

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Andricek, Ladislav. "All-silicon multi-chip modules based on ultra-thin active pixel radiation sensors." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2014, DPC (2014): 000960–83. http://dx.doi.org/10.4071/2014dpc-tp31.

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The Semiconductor Laboratory of the Max Planck Society is designing and producing cutting edge radiation and particle sensors for experiments in basic science conducted by institutes of the German Max Planck Society and other international partners. One of the most challenging projects is the construction of so-called vertex detectors for experiments at high energy particle colliders like KEKB in Japan and the future International Linear Collider (ILC) as the next big international high energy physics project after the LHC at CERN, Geneva, Switzerland. Modern vertex detectors are pixelated position sensitive particle sensors based on highly specialized silicon technology similar to CMOS or CCD sensors for commercial optical applications. The goal is to measure the track of a secondary particle and extrapolate to the point of its origin. One of the main challenges for up-to-date vertex detectors is the requirement of low mass to minimize the effect of scattering of the traversing particle in the sensor material itself and the sensor support structures. We are developing ultra-low-mass sensors based on the DEPFET (DEpleted P-channel FET) pixel technology. DEPFETs are MOS transistors made on fully depleted detector grade silicon and combine the sensing and first signal amplification element in the same device. The thickness of the sensor is minimized and optimized for the best vertexing performance of the detector arrangement as whole. The detector is a cylindrical arrangement of sensor modules around the primary beam interaction point. The sensor module is a silicon based multi-chip module with the module substrate being the sensor wafer itself. There are three functional regions on the MCM: the 50 μm thin sensitive active pixel area with the DEPFETs in a two metal and two poly-silicon layer technology, the ‘end of stave’ with three metal layers (two Al and one Cu) where the read-out electronic is placed and the narrow frame in the same interconnect technology with the steering ASICs. Three types of ASICs are used: a mixed-signal ASICs as the analogue front-end and ADC, a digital data handling chip and a steering chip in HV-MOS technology for the row-wise addressing and clearing of the pixel matrix. There are 12 chips in total on the module, all bump-bonded to the substrate, about 3000 area array bumps in total. The finished module has 250 kPixels and is read out at a frame rate of 50 kHz via a wire-bonded flex cable. Our paper will describe the technology for the production of ultra-thin DEPFET sensors and the monolithically integrated support, testing challenges during production and their solutions as well as electrical, thermal, and mechanical properties of the assembled MCMs. An outlook will be given on how micro-channels for active cooling will be integrated in the current MCM concept.

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Yang, Sheng Bing, Shuai Wang, Yan Xia Su, Feng Xu, and Zhen Zhen Li. "Compensation Research of Engine Oil Pressure Sensor Based on MEMS." Applied Mechanics and Materials 325-326 (June 2013): 765–68. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.765.

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The engine lubrication system plays an important role in the engine working process. Engine electronic oil pressure sensor based on piezoresistor pressure sensor MEMS with contactless measure technology is designed in this paper. This sensor includes a signal disposal chip which provides zero point pressure compensation, temperature compensation and sensitivity compensation and a chip which is used to adjust the duty cycle according to the output voltage of the signal disposal chip. The experiments show that the Engine electronic oil pressure sensor works well with excellent characteristic.

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XU, YING, HUI YU, HUA CAI, QINGJUN LIU, and PING WANG. "A NOVEL INTEGRATED CELL-BASED BIOSENSOR FOR EXTRACELLULAR ELECTROPHYSIOLOGICAL MONITORING." International Journal of Information Acquisition 04, no. 03 (2007): 193–204. http://dx.doi.org/10.1142/s0219878907001289.

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A rigorous preselection of identified compounds by in vitro cellular screening is necessary prior to using the drug candidates for the further time consuming and parallel monitoring stage. In this paper we introduced an integrated cell based chip which can detect changes of electrophysiological parameters by using microelectronic chips such as Light-Addressable Potentiometric Sensors (LAPS), Micro-electrodes Array Sensors (MEAS) and Interdigitated Array Sensor (IDA) etc. to record the extracellular metabolism chemical and biological substances, action potential and living characteristics of cells representing the different response. In this research we presented novel ideas including an integrating multifunctional cell sensors chip, obtaining the living cells as the source of cell sensors with cardiac myocytes. The characteristic curve and primary electrophysiological measurement of each part were tested. Further developments will be done by culturing living olfactory and taste cells on surface of the devices. Now, we have completed the fabrication of the sensor and obtained some promising experiments results in different sensor units. This research will be interesting and useful for parallel extracellular monitoring.

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Zverev, A. V., M. Andronik, V. V. Echeistov, et al. "Integrated Microfluidic Flow Sensor for LAB-oN-CHIP and PoINT-oF-CARE Applications." Biotekhnologiya 36, no. 4 (2020): 112–20. http://dx.doi.org/10.21519/0234-2758-2020-36-4-112-120.

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The results of the development and manufacture of an integrated membrane-free sensor for the control of accurate dilution of liquid samples on the microfluidic chip are presented. The proposed type of devices is intended for direct precise measurements of liquid flow rate in microchannels of laboratories-on-chip, including point-of-care systems. The sensor topology was optimized based on the numerical simulation results and technological requirements. The main characteristic of the developed sensor is the lack of a membrane in the design while maintaining the sensitivity and accuracy of the device at the level of a commercial membrane analogue. The fully biocompatible sensor was manufactured using standard microelectronics and soft lithography technologies. In order to optimize the sensor design, 32 different topologies of the device were tested. The integration of the flow sensors on the chip allows to significantly reduce the dead volume of the hydrodynamic system and to control the amount of liquid entering the individual reservoirs of the microfluidic chip. The sensor occupies an area of (210 x 140) um2 in the channel and is characterized by a relative error of 5% in the flow rate range of 100-1000 ul/min. microfluidics, lab-on-chip, calorimetric flow sensor, thermoresistive sensor, numerical simulation, hydrodynamics, complementary metal-oxide-semiconductor, microtechnologies Devices were made at the BMSTU Nanofabrication Facility (FMN Laboratory, FMNS REC, ID 74300).

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Eldebiky, Amro, Mourad Elsobky, Harald Richter, and Joachim N. Burghartz. "Humidity and temperature sensor system demonstrator with NFC tag for HySiF applications." Advances in Radio Science 16 (September 4, 2018): 109–16. http://dx.doi.org/10.5194/ars-16-109-2018.

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Abstract. Hybrid System-in-Foil (HySiF) is one of the emerging branches of flexible electronics in which ultra-thin silicon chips are integrated with flexible sensors in polymeric foils (Elsobky et al., 2018; Alavi et al., 2018). Intensive attention was given to the implementation of flexible environmental sensing platforms for logistics and food packaging (Cartasegna et al., 2011; Liu et al., 2016). The aim of this work is the implementation of a sensor system demonstrator using HySiF components, namely an ultra-thin microcontroller chip in addition to an on-chip temperature and an on-foil humidity sensors. The measurement concept for the relative humidity sensor is measuring the capacitance difference between an off-chip (on the foil substrate) humidity dependent sensor capacitor, and another humidity independent reference capacitor. The electrical readout technique is based on the charge amplifier switched capacitor circuit. It is implemented using a commercially available microcontroller (EM microelectronics EM6819) which has the advantage of being available as single chips to enable post-processing steps such as backthining and chip embedding in a thin polymer package. Sensor and reference capacitors are homogeneously integrated on-foil. 400 and 30 µm thick microcontroller dies (MCU) are used in this application. The charge amplifier result is digitized using an internal 10-bit analog-to-digital converter (ADC). The 10-bit ADC is time multiplexed between the charge amplifier structure and the internal temperature sensor. Linear interpolation is used to fit the digital output of the ADC and calibrate the output of the sensor system. Readings of the humidity level and the temperature are written to an NFC tag (from the company EM microelectronics based on chip EM NF4) using the contact interface. Readings can be accessed using a customized android application on a smartphone.

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Sun, Yu Jia, Xiao Ming Wang, Fang Xiu Jia, and Ji Yan Yu. "Design of a Wireless Sensor Network Node Based on STM32." Applied Mechanics and Materials 347-350 (August 2013): 1920–23. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1920.

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The characteristics and the design factors of wireless sensor network node are talked in this article. According to the design factors of wireless sensor network, this article will mainly point out the design of wireless sensor nodes based a Cortex-M3 Microcontroller STM32F103RE chip. And the wireless communication module is designed with a CC2430 chip. Our wireless sensor node has good performance in our test.

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Khalid, Nabil, Rashid Mirzavand, and Ashwin K. Iyer. "A Survey on Battery-Less RFID-Based Wireless Sensors." Micromachines 12, no. 7 (2021): 819. http://dx.doi.org/10.3390/mi12070819.

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We present a survey on battery-less Radio Frequency Identification (RFID-based wireless sensors that have emerged in the past several years. We discuss the evolution of RFID turning into wireless sensors. Moreover, we talk about different components of these battery-less RFID-based wireless sensors, five main topologies that transform a simple RFID chip into a battery-less wireless sensor, and state-of-the-art implementations of these topologies. In battery-less wireless sensors, the read range is of key importance. Hence, we discuss how each component of the sensor plays its role in determining the read range and how each topology exploits these components to optimize read range, complexity, and/or cost. Additionally, we discuss potential future directions that can help provide improvements in RFID-based wireless sensor technology.

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Gao, Tuo, Yongchen Wang, Yi Luo, et al. "Fast and Reversible Chemiresistive Sensors for Robust Detection of Organic Vapors Using Oleylamine-Functionalized Palladium Nanoparticles." International Journal of High Speed Electronics and Systems 27, no. 03n04 (2018): 1840027. http://dx.doi.org/10.1142/s012915641840027x.

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Chemiresistive sensors fabricated by oleylamine-functionalized palladium nanoparticles (OLA-PdNP) have been studied in hydrogen sensing, but not so much in organic vapor sensing. Like the extensively studied gold nanoparticles-based gas sensors, palladium nanoparticles also give the ease of surface modification and large surface-area-to-volume ratio. In this study, we demonstrate an OLA-PdNP chemiresistor array with robust sensor responses (1-15% of ΔR/R0) and accurate discrimination of six organic vapors at a concentration of p/p0 = 0.2, using principal component analysis (PCA). Each microfabricated 36 mm2 chip has 36 individual sensors. By incorporating multiple sensors on one chip, the sensor response gives a distinguishable pattern for each analyte. From this study, an electronic chemical spectrometer can be further developed by incorporating many types of ligands on palladium metal core to enhance sensor accuracy and precision.

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Aaryashree, Yuuto Takeda, Momoe Kanai, Akihiko Hatano, Yasuo Yoshimi, and Masahito Kida. "A “Single-Use” Ceramic-Based Electrochemical Sensor Chip Using Molecularly Imprinted Carbon Paste Electrode." Sensors 20, no. 20 (2020): 5847. http://dx.doi.org/10.3390/s20205847.

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An inexpensive disposable electrochemical drug sensor for the detection of drugs (vancomycin, meropenem, theophylline, and phenobarbital) is described. Molecularly imprinted polymer (MIP) templated with the target drugs was immobilized on the surface of graphite particles using a simple radical polymerization method and packed into the working electrode of a three-electrode ceramic-based chip sensor. Differential pulse voltammetry (DPV) was used to determine the relationship between the response current and the concentration of the targeted drug while using one sensor chip for one single operation. The time required for each DPV measurement was less than 2 min. Concentrations corresponding to the therapeutic range of these drugs in plasma were taken into account while performing DPV. In all the cases, the single-used MIP sensor showed higher sensitivity and linearity than non-imprinted polymer. The selectivity test in drugs with a structure similar to that of the target drugs was performed, and it was found that MIP-based sensors were more selective than the untreated ones. Additionally, the test in whole blood showed that the presence of interfering species had an insignificant effect on the diagnostic responses of the sensor. These results demonstrate that the disposable MIP-sensor is promising for quick and straightforward therapeutic drug monitoring to prevent the toxic side effects and the insufficient therapeutic effect due to the overdose and underdose, respectively.

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Wu, Ziyue, Jiaqi Wang, Chao Bian, Jianhua Tong, and Shanhong Xia. "A MEMS-Based Multi-Parameter Integrated Chip and Its Portable System for Water Quality Detection." Micromachines 11, no. 1 (2020): 63. http://dx.doi.org/10.3390/mi11010063.

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As an important means to protect water resources, water quality detection is of great social and economic significance. Water quality detection sensors processed by micro-electro-mechanical system (MEMS) technology have the advantages of low-cost, small size, and high sensitivity. In this paper, a multi-parameter water quality detection integrated sensor chip is further studied, and a portable detection system using this chip is developed. Temperature, pH, oxidation-reduction potential (ORP), conductivity and concentration of copper ions (Cu2+) are selected as typical water quality parameters. Experiments of sensor calibrations using this portable detection system were performed in standard solutions. The sensor has a sensitivity of −57.34 mV/pH in pH detection and 5.95 Ω/°C in temperature response. ORP is directly detected by Pt microelectrode on the chip and the relative error is less than 3%. The electrode constant of the sensor is 1.416 cm−1 and the linearity is 0.9995 in conductivity detection. With the gold nanoparticles deposited on the electrode, the detection peak of Cu2+ appears at 280 mV and the sensor shows good linearity to the concentration of Cu2+ in the range of 0–0.6 mg/L. The detection limit of Cu2+ concentration is 2.33 μg/L. Through measurement and calculation, the accuracy of the portable system is within 4%. This portable multi-parameter water quality detection system with the MEMS-based integrated chip shows great potential in the field and fast detection.

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Kahr, Matthias, Michael Stifter, Harald Steiner, et al. "MOEMS Based Single Chip Lorentz Force Magnetic Gradiometer." Proceedings 2, no. 13 (2018): 724. http://dx.doi.org/10.3390/proceedings2130724.

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The functional principle of an optical gradient magnetic field sensor consisting of two independent laterally oscillating masses on a single chip is reported. These oscillations are caused by the Lorentz forces resulting from an alternating current through the masses interacting with a static magnetic field. Light is modulated by relative in-plane movement of the masses and a fixed frame and subsequently detected by two photodiodes. Evaluation of magnitude and phase of the output signal reveals information about the uniformity of the magnetic field. The sensor is capable of detecting uniaxially strength and direction of magnetic gradient fields, offset gradient fields and homogeneous fields.

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Xue, Songtao, Kang Jiang, Shuai Guan, Liyu Xie, Guochun Wan, and Chunfeng Wan. "Long-Range Displacement Meters Based on Chipped Circular Patch Antenna." Sensors 20, no. 17 (2020): 4884. http://dx.doi.org/10.3390/s20174884.

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This paper presents a passive wireless long-range displacement sensor that is based on the circular patch antenna, and the detecting range of the sensor can be customized. The sensor consists of a chipped circular antenna with two opened rectangular windows, a substrate, and a ground plate with a sloping channel. No bonding between the antenna and the ground plate allows for the chipped antenna to slide along the sloping channel. The channel will drive the current flow on the plate once the chip is activated, increasing the effective electrical length and, consequently, decreasing the resonant frequency of the circular antenna. The sensing mechanism equates the measuring displacement to the relative movement of the antenna with respect to the ground that achieves the measurement of long-range displacement and, thus, the proposed sensor can avoid stress damage to the antenna due to excessive deformation. Three different range sensors were simulated in the the Ansoft high frequency structure simulator (HFSS). The results show that the resonance frequency of the antenna has a linear relationship with the varying chute depth beneath the chip. Three sensors were fabricated, and the experimental results also validated that the sensitivity of the sensor can be adjusted.

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Mattoli, Virgilio, Alessio Mondini, Barbara Mazzolai, Gabriele Ferri, and Paolo Dario. "A Universal Intelligent System-on-Chip Based Sensor Interface." Sensors 10, no. 8 (2010): 7716–47. http://dx.doi.org/10.3390/s100807716.

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Mere, Viphretuo, Aneesh Dash, Rakshitha Kallega, Rudra Pratap, Akshay Naik, and Shankar Kumar Selvaraja. "On-chip silicon photonics based grating assisted vibration sensor." Optics Express 28, no. 19 (2020): 27495. http://dx.doi.org/10.1364/oe.394393.

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Lu, Tianqi, Min Zhang, Shuai Guo, and Ruibin Liu. "Humidity and salt sensor based on CdSSe nanowire chip." IOP Conference Series: Materials Science and Engineering 569 (August 9, 2019): 022006. http://dx.doi.org/10.1088/1757-899x/569/2/022006.

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Zhang, Xianzhou, Weihua Li, Weijia Wen, Yanzhe Wu, and Gordon Wallace. "Development of electrorheological chip and conducting polymer-based sensor." Frontiers of Mechanical Engineering in China 4, no. 4 (2009): 393–96. http://dx.doi.org/10.1007/s11465-009-0043-8.

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Wang, Zhong Ming, and Yong Zheng Zhou. "Calibration of Pressure Sensor in Automobiles Based on ZMD Chip." Applied Mechanics and Materials 128-129 (October 2011): 544–47. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.544.

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In order to eliminate the negative effect of temperature to automobile pressure sensor whose environment temperature changes from-40°C to 130°C, a calibration circuit is designed based on ZMD chip. The temperature characters of this pressure sensor are: zero point linearly change with temperature at the rate-0.07mV/20°C; strain coefficient linearly change with temperature at the rate 3.27e-4/°C. After calibrated, the output of pressure sensor change only with pressure and the deviation value is from-0.48%FSO to +0.84%FSO，in the designing range ±2%FSO.

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Xie, Liqiang, Tianxian Wang, Ping Wang, and Jianchun Xing. "On-Chip Correlator for Passive Wireless SAW Multisensor Systems." Journal of Sensors 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/2583063.

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For decoding the asynchronous superposition of response signals from different sensors, it is a challenge to achieve correlation in a code division multiplexing (CDM) based passive wireless surface acoustic wave (SAW) multisensor system. Therefore, an on-chip correlator scheme is developed in this paper. In contrast to conventional CDM-based systems, this novel scheme enables the correlations to be operated at the SAW sensors, instead of the reader. Thus, the response signals arriving at the reader are the result of cross-correlation on the chips. It is then easy for the reader to distinguish the sensor that is matched with the interrogating signal. The operation principle, signal analysis, and simulation of the novel scheme are described in the paper. The simulation results show the response signals from the correlations of the sensors. A clear spike pulse is presented in the response signals, when a sensor code is matched with the interrogating code. Simulations verify the feasibility of the on-chip correlator concept.

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Zhang, Wen Kai, and Hong Wei Wang. "The Wireless Ultrasonic Sensor System Based on the Chip of SH79F32." Applied Mechanics and Materials 490-491 (January 2014): 1088–91. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.1088.

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In this thesis, we take SH79F32 as main chip, the ultrasonic sensor of HC-SR04 as collection tools, wireless transceiver based on nRF905 as communication tool, and reach the function of wireless sensor networks. Through Altium DXP-2004 to conduct schematic design and draw PCB, and then solder circuit boards, use the software of Keil to design process, to realize wireless ultrasonic sensor communication between different microcontrollers, after that, complete the design and production of wireless ultrasonic sensor design and production.

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Poghossian, Arshak, Rene Welden, Vahe V. Buniatyan, and Michael J. Schöning. "An Array of On-Chip Integrated, Individually Addressable Capacitive Field-Effect Sensors with Control Gate: Design and Modelling." Sensors 21, no. 18 (2021): 6161. http://dx.doi.org/10.3390/s21186161.

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The on-chip integration of multiple biochemical sensors based on field-effect electrolyte-insulator-semiconductor capacitors (EISCAP) is challenging due to technological difficulties in realization of electrically isolated EISCAPs on the same Si chip. In this work, we present a new simple design for an array of on-chip integrated, individually electrically addressable EISCAPs with an additional control gate (CG-EISCAP). The existence of the CG enables an addressable activation or deactivation of on-chip integrated individual CG-EISCAPs by simple electrical switching the CG of each sensor in various setups, and makes the new design capable for multianalyte detection without cross-talk effects between the sensors in the array. The new designed CG-EISCAP chip was modelled in so-called floating/short-circuited and floating/capacitively-coupled setups, and the corresponding electrical equivalent circuits were developed. In addition, the capacitance-voltage curves of the CG-EISCAP chip in different setups were simulated and compared with that of a single EISCAP sensor. Moreover, the sensitivity of the CG-EISCAP chip to surface potential changes induced by biochemical reactions was simulated and an impact of different parameters, such as gate voltage, insulator thickness and doping concentration in Si, on the sensitivity has been discussed.

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Kappert, Holger, Sebastian Braun, Norbert Kordas, et al. "A High Temperature SOI-CMOS Chipset Focusing Sensor Electronics for Operating Temperatures up to 300 °C." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2021, HiTEC (2021): 000018–24. http://dx.doi.org/10.4071/2380-4491.2021.hitec.000018.

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Abstract Sensors are key elements for capturing environmental properties and are increasingly important in the industry for the intelligent control of industrial processes. While in many everyday objects highly integrated sensor systems are already state of the art, the situation in an industrial environment is clearly different. Frequently the use of sensor systems is impossible, because the extreme ambient conditions of industrial processes like high operating temperatures or strong mechanical load do not allow a reliable operation of sensitive electronic components. Fraunhofer is running the Lighthouse Project ‘eHarsh’ to overcome this hurdle. In the course of the project an integrated sensor readout electronic has been realized based on a set of three chips. A dedicated sensor frontend provides the analog sensor interface for resistive sensors typically arranged in a Wheatstone configuration. Furthermore, the chipset includes a 32-bit microcontroller for signal conditioning and sensor control. Finally, it comprises an interface chip including a bus transceiver and voltage regulators. The chipset has been realized in a high temperature 0.35 micron SOI-CMOS technology focusing operating temperatures up to 300 °C. The chipset is assembled on a multilayer ceramic LTCC-board using flip chip technology. The ceramic board consists of 4 layers with a total thickness of approx. 0.9 mm. The internal wiring is based on silver paste while external contacts were alternatively manufactured in silver (sintering/soldering) or in gold-alloys (wire bonding). As interconnection technology, silver sintering has been applied. It has already been shown that a significant increase in lifetime can be reached by using silver sintering for die attach applications. Using silver sintering for flip chip technology is a new and challenging approach. By adjusting the process parameter geared to the chipset design and the design of the ceramic board high quality flip chip interconnects can be generated.

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Qi, Chen Jie, and Hong Wei Wang. "The Wireless Sensor System Based on the Chip of STM32 and SH79F32." Applied Mechanics and Materials 548-549 (April 2014): 744–47. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.744.

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In this thesis, we take STM32F103R8T6 as main chip, SH79F32 as auxiliary chip, the temperature sensor of DS18B20 as collection tools, wireless transceiver based on nRF905 as communication tool, and reach the function of wireless sensor networks. Through Altium Designer Release 10 to conduct schematic design and draw PCB, and then solder circuit boards, use the software of Keil to design process, to realize wireless sensor communication between different microcontrollers, after that ,complete the design and production of wireless sensor communications platforms.

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Cennamo, Nunzio, Carlo Trigona, Salvatore Graziani, et al. "An Eco-Friendly Disposable Plasmonic Sensor Based on Bacterial Cellulose and Gold." Sensors 19, no. 22 (2019): 4894. http://dx.doi.org/10.3390/s19224894.

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In several application fields, plasmonic sensor platforms combined with bio-receptors are intensively used to obtain biosensors. Most of these commercial devices are based on a disposable chip. Usually a gold chip, functionalized with a specific bio-receptor, inside a costly sensor system, is used. In this work, we propose a low-cost and small-size sensor system, used for monitoring a disposable plasmonic chip, based on an innovative optical waveguide made of bacterial cellulose (BC). In particular, we have sputtered gold on the green slab waveguide that is able to excite localized surface plasmon resonance (LSPR). Experimental results are presented on the capabilities of using the BC-based composite as an eco-friendly plasmonic sensor platform, which could be exploited for realizing disposable biosensors. The sensor has been used with optical fibers and simple equipment. More specifically, the fibers connect the green disposable LSPR sensor with a light source and with a spectrometer. The novel plasmonic sensing approach has been tested using two different optical waveguide configurations of BC, with and without ions inside BC.

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Tan, Qiu Lin, Xian Sheng Zhang, Li Qiong Ding, and Zhao Ying Zhou. "Design of Water Pressure Sensor Applied to the Eye Aqueous Humor Detection." Key Engineering Materials 609-610 (April 2014): 1023–28. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.1023.

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Aimed at the dynamic pressure measurement, this paper presents a pressure sensor based on MEMS technology. An absolute pressure sensor is in one silicon chip of which the size is 3.05mm×3.05mm with the diaphragm thickness of 890μm. We combine Piezoresistive Bridge with signal conditioning chip, and design a gain adjustable, high sensitivity dynamic pressure sensors. By changing the depth of the sensor in water, the resulting change in the resistor signal is then used to calculate the depth of the water. The experimental results show that the measuring accuracy can reach 2×10-4V per 1mm (water depth). The design of the hardware circuit was simple, flexible configuration, versatile features. It was found that the pressure sensor bad a linear response to pressure as expected, and was more sensitive than conventional resistor sensor. Sensor, small size, high sensitivity, will be providing a better way to measure eye aqueous humor.

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Clarke, Gabriel A., Brenna X. Hartse, Amir Ehsan Niaraki Asli, et al. "Advancement of Sensor Integrated Organ-on-Chip Devices." Sensors 21, no. 4 (2021): 1367. http://dx.doi.org/10.3390/s21041367.

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Organ-on-chip devices have provided the pharmaceutical and tissue engineering worlds much hope since they arrived and began to grow in sophistication. However, limitations for their applicability were soon realized as they lacked real-time monitoring and sensing capabilities. The users of these devices relied solely on endpoint analysis for the results of their tests, which created a chasm in the understanding of life between the lab the natural world. However, this gap is being bridged with sensors that are integrated into organ-on-chip devices. This review goes in-depth on different sensing methods, giving examples for various research on mechanical, electrical resistance, and bead-based sensors, and the prospects of each. Furthermore, the review covers works conducted that use specific sensors for oxygen, and various metabolites to characterize cellular behavior and response in real-time. Together, the outline of these works gives a thorough analysis of the design methodology and sophistication of the current sensor integrated organ-on-chips.

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Jia, Xiaoning, Joris Roels, Roel Baets, and Gunther Roelkens. "On-Chip Non-Dispersive Infrared CO2 Sensor Based On an Integrating Cylinder." Sensors 19, no. 19 (2019): 4260. http://dx.doi.org/10.3390/s19194260.

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In this paper, we propose a novel, miniaturized non-dispersive infrared (NDIR) CO2 sensor implemented on a silicon chip. The sensor has a simple structure, consisting of a hollow metallic cylindrical cavity along with access waveguides. A detailed analysis of the proposed sensor is presented. Simulation with 3D ray tracing shows that an integrating cylinder with 4 mm diameter gives an equivalent optical path length of 3 . 5 cm. The sensor is fabricated using Deep Reactive Ion Etching (DRIE) and wafer bonding. The fabricated sensor was evaluated by performing a CO2 concentration measurement, showing a limit of detection of ∼100 ppm. The response time of the sensor is only ∼2.8 s, due to its small footprint. The use of DRIE-based waveguide structures enables mass fabrication, as well as the potential co-integration of flip-chip integrated midIR light-emitting diodes (LEDs) and photodetectors, resulting in a compact, low-power, and low-cost NDIR CO2 sensor.

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Zhang, Chuang, Lei Zhao, and Tian Wen Li. "The Design of Pressure Test System Based on MSP430 Microcontroller." Applied Mechanics and Materials 687-691 (November 2014): 3171–74. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.3171.

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The design solution presented in this article is a pressure data acquisition system which is based on the piezoresistive pressure sensor and MSP430F249 microcontroller. It can be simulated on the Protues7. FlexiForce-A201 sensor can be seen as a variable resistance in the circuit. Using the signal conditioning circuit and on chip components ADC12 and DAC12 to realize the 8 channels of analog signals and transformation and the A/D conversion accuracy is 12-bit. The results of transformation can be both stored in the M45PE16 flash and real-time displayed on the LCD1602. This system used the on-chip peripherals and powered by button cell. This solution can realize the independence of system and data source by joining up various sensors. It is simple, low-power and universal.

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Jin, Han, Yajie Qin, Hao Liang, et al. "A Mobile-Based High Sensitivity On-Field Organophosphorus Compounds Detecting System for IoT-Based Food Safety Tracking." Journal of Sensors 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/8797435.

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A mobile-based high sensitivity absorptiometer is presented to detect organophosphorus (OP) compounds for Internet-of-Things based food safety tracking. This instrument consists of a customized sensor front-end chip, LED-based light source, low power wireless link, and coin battery, along with a sample holder packaged in a recycled format. The sensor front-end integrates optical sensor, capacitive transimpedance amplifier, and a folded-reference pulse width modulator in a single chip fabricated in a 0.18 μm 1-poly 5-metal CMOS process and has input optical power dynamic range of 71 dB, sensitivity of 3.6 nW/cm2 (0.77 pA), and power consumption of 14.5 μW. Enabled by this high sensitivity sensor front-end chip, the proposed absorptiometer has a small size of 96 cm3, with features including on-field detection and wireless communication with a mobile. OP compound detection experiments of the handheld system demonstrate a limit of detection (LOD) of 0.4 μmol/L, comparable to that of a commercial spectrophotometer. Meanwhile, an android-based application (APP) is presented which makes the absorptiometer access to the Internet-of-Things (IoT).

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Szczepański, Zbigniew, and Jerzy Kalenik. "Advanced Assembly Techniques For Silicon Sensors." Journal of Microelectronics and Electronic Packaging 2, no. 1 (2005): 8–13. http://dx.doi.org/10.4071/1551-4897-2.1.8.

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Some assembly approaches which were carried out with silicon gas sensor and silicon humidity sensor are presented and described in this paper. Some of these sensors were based on silicon 3-D structures with so called “backside contacts” which need special assembly solutions. Flip chip solder and adhesive bonding were used for silicon humidity sensor. Experimental specifications concerning applied assembly solutions and obtained results are presented and described.

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Wu, Shao Hua, Zhan Zhao, Zhen Fang, et al. "New Style Four-Electrode MEMS Conductivity Chip." Key Engineering Materials 483 (June 2011): 475–80. http://dx.doi.org/10.4028/www.scientific.net/kem.483.475.

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MEMS sensor for solution conductivity measurement has been applied widely which has many advantages such as cheap, accurate, batch fabricate, and good consistent etc. Existent MEMS conductivity sensors usually have planar structure with four short parallel electrodes so that the two voltage electrodes are tend to be polluted and consequently lead to mistakes for the conductivity test system. A new pattern of conductivity chip with an annular voltage electrode to enhance the ability of anti-pollution based on MEMS technology is going to be introduced in this article; the ANSYS simulation is applied to help demonstrate the reasons why the new pattern of conductivity chip has good ability of anti-pollution and the experiment results are also presented to show the performance of the conductivity sensor.

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Wei, Hong, Ping Xiang Cao, Xiao Lei Guo, Bao Jin Wang, Zong Ming Qiao, and Wei Hu. "Design of Blank Thickness on-Line Monitoring System of Continuous Flat Press in Wood-Based Panel Industry." Applied Mechanics and Materials 130-134 (October 2011): 3767–72. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.3767.

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On the base of appraising synthetically of measuring and testing technique and the monitoring system of thickness, the article analyzed the demand of thickness deviation. It also determined the control core of single chip, and studied on the on-line monitoring system of the wood-based Panel thickness, which is measured by laser sensor and differential transformer sensor and based on the technique of wireless sensors in order to develop monitoring precision and automation standard of blank thickness in wood-based panel industry.

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Wang, Zhong Ming. "Simplified Calibration of Resistive Pressure Sensor Based on ZMD Chip." Advanced Materials Research 634-638 (January 2013): 3858–61. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3858.

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In order to eliminate the negative effect of temperature to resistive pressure sensor of automobile, a calibration circuit is required based on ZMD chip or MAX1452. The traditional calibration way of ZMD is four-point calibration that has the defects such as inefficiencies and complexity. Thus, a simplified calibration way, named as three-point calibration, is provided which is able to simplify the calibration equipment in practical manufacturing. Considerably, the calibration efficiency is improved from about one hour into 5 minutes every time. After calibrated, the output of pressure sensor change only with pressure and the deviation value is from -0.48%FSO to +0.84%FSO，in the designing range ±2%FSO.

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Zhao, Yu, Qingyue Li, Jean-Baptiste Doucet, et al. "Implementation of Integrated VCSEL-Based Optical Feedback Interferometry Microfluidic Sensor System with Polymer Microoptics." Applied Sciences 9, no. 24 (2019): 5484. http://dx.doi.org/10.3390/app9245484.

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Using the optical feedback interferometry (OFI) technique, we demonstrated a miniaturized and compact sensor system based on a dedicated optical source for flowmetry at the micro-scale. In the system, polymer microlenses were integrated directly on a VCSEL (vertical-cavity surface-emitting laser) chip and the microfluidic channel chip surface using polymer-based micro-fabrication technologies. In particular, at a post-process stage, we integrated a collimation lens on a VCSEL chip of small dimensions (200 µm × 200 µm × 150 µm). This process was enabled by the soft-printing of dry thick resist films and through direct laser writing technology. We performed flow rate measurements using this new compact system, with a conventional bulk glass lens configuration for system performance evaluation. A maximum 33 dB signal-to-noise ratio was achieved from this novel ultra-compact system. To our knowledge, this is the highest signal level achieved by existing OFI based flowmetry sensors.

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Kang, Li. "Hand Flat Knitting Machine Speech Counter System Design - Based on Single-Chip Microcomputer." Advanced Materials Research 383-390 (November 2011): 4227–34. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.4227.

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This paper designed a set of counter system to hand flat knitting machine based on single-chip microcomputer, for the inconvenient of counter of traditional ones. It used a shading photoelectric switch sensor converted the output of the sensor into standard electrical signal of single-chip microcomputer with converter, then dealed with single-chip microcomputer, and the count value was output by speech at the end . The hardware simulation results show that the design is practical, achieving the schemed requirements.

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Giebel, Friederike Julia, Marcel Köhle, Till Stramm, Klaus T. Kallis, and Horst L. Fiedler. "Concept for a MEMS-type vacuum sensor based on electrical conductivity measurements." Journal of Sensors and Sensor Systems 6, no. 2 (2017): 367–74. http://dx.doi.org/10.5194/jsss-6-367-2017.

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Abstract. The concept of the micro-structured vacuum sensor presented in this article is the measurement of the electrical conductivity of thinned gases in order to develop a small, economical and quite a simple type of vacuum sensor. There are already some approaches for small vacuum sensors. Most of them are based on conservative measurement principles similar to those used in macroscopic vacuum gauges. Ionization gauges use additional sources of energy, like hot cathodes, ultraviolet radiation or high voltage for example, for ionizing gas molecules and thereby increasing the number of charge carriers for measuring low pressures. In contrast, the concept discussed here cannot be found in macroscopic sensor systems because it depends on the microscopic dimension of a gas volume defined by two electrodes. Here we present the concept and the production of a micro-structured vacuum sensor chip, followed by the electrical characterization. Reference measurements with electrodes at a distance of about 1 mm showed currents in the size of picoampere and a conductivity depending on ambient pressure. In comparison with these preliminary measurements, fundamental differences regarding pressure dependence of the conductivity are monitored in the electrical characterization of the micro-structured sensor chip. Finally the future perspectives of this sensor concept are discussed.

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Xu, Yubao. "FPGA Alarm System Based on Multi Temperature Sensor." International Journal of Online Engineering (iJOE) 13, no. 05 (2017): 109. http://dx.doi.org/10.3991/ijoe.v13i05.7053.

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The purpose of this study is to achieve real-time acquisition and monitoring of temperature in large-scale industrial or agricultural production scene, and timely detect abnormal temperature. FPGA chip, multi temperature sensor and alarm control module three parts consist of FPGA alarm system obtained based on multi temperature sensor. Multi temperature sensor is used for the acquisition of relevant temperature signal in the production site, and the transmission of the collected data through the way of digital signal chip to the FPGA chip for further processing. The FPGA chip is responsible for the parameter setting, the temperature signal acquisition and the threshold comparison and so on, and according to the data processing result, it can send out the normal response control signal to the alarm module. The alarm module contains the pre-warning lights and the alarm device that it can receive the control signal and realize alarm response. The results showed that the test in planting flowers in greenhouse showed that the system is sensitive in response and small in error of temperature acquisition, in accordance with the requirements for use. As a result, the system can be widely used in the temperature monitoring in the production scene, suitable for being promoted in a variety of occasions needing for monitoring the temperature.

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Yuliati, Ari, Fajar Hafid Abdilah, and Eddy Samsoleh. "Designing a Lecture Room Monitor System with an Android Application Based on the Chip's ESP8266." ITEJ (Information Technology Engineering Journals) 5, no. 2 (2020): 80–87. http://dx.doi.org/10.24235/itej.v5i2.43.

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The classroom monitoring system with an android application based on the ESP8266 chip was created to solve problems on campus in finding unused rooms and to provide solutions to the problems of finding classroom thus far by using inefficient manual methods. The monitor system was made to determine the status of classroom usage with a passive infrared (PIR) sensor which functions to detect human presence in the room and a light sensor with a Light Dependent Resistor (LDR) to detect the use of the projector in the room. The two sensors are connected to the ESP8266 chip which is connected to a realtime database via the internet. The android application is specifically made to access monitoring data stored in a realtime database throughout it is connected to the internet. The results of this system test the PIR sensor reaches a maximum distance of 4 meters, a time delay of about 3 minutes, a reliable tool, and low cost.

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Wang, Zhen, Jian Ping Luo, and Xiang Qiu. "Design of Permanent Magnet Synchronous Motor Rotor Position Detection System Based on TLE5012." Advanced Materials Research 1028 (September 2014): 195–99. http://dx.doi.org/10.4028/www.scientific.net/amr.1028.195.

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Currently, the application of permanent magnet synchronous motor is in a wide range of electric vehicle. Field oriented control algorithm is the main way to control permanent magnet synchronous motor, the magnetic field oriented control must be precise to get the rotational position of the motor. Therefore, the performance of the motor position sensor directly affects the accuracy of the magnetic field oriented control. There are three main kinds of sensors: photoelectric position sensor, magnetic position sensor and magnetic sensor. Due to its superior performance, the application of magnetic position sensors is increasingly widespread. This paper designed permanent magnet synchronous motor position detection circuit for the position of permanent magnet synchronous motor based on TLE5012 used to detect the position and 32-bit micro-controllers Infineon TC1767 used as the main chip.

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Ghafar-Zadeh, Ebrahim, and Mohamad Sawan. "Charge-Based Capacitive Sensor Array for CMOS-Based Laboratory-on-Chip Applications." IEEE Sensors Journal 8, no. 4 (2008): 325–32. http://dx.doi.org/10.1109/jsen.2008.917485.

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Danko, V. A., I. Z. Indutnyi, Yu V. Ushenin, et al. "Development of Technology for Sensor Chip Production with Increased Sensitivity and Improved Physical and Mechanical Characteristics for Optical Sensors Based on Surface Plasmon Resonance." Science and innovation 13, no. 6 (2017): 25–33. http://dx.doi.org/10.15407/scine13.06.025.

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Wang, Xin Li, and Xu Ping. "Hardware Design of Nature Gas Engine ECU Based on Single Chip." Applied Mechanics and Materials 575 (June 2014): 576–79. http://dx.doi.org/10.4028/www.scientific.net/amm.575.576.

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Gas supply method plays an important role in engine performance for natural gas engines (NGE). In order to overcome the low charging efficiency of pre-mixed fuel gas supply method the multi-point injection (MPI) gas engine controller hardware system is designed in this paper. For the nature gas engine controller the main controller is selected as the microcontroller MC9S12XSl28, then the circuitry for semiconductor piezoelectric air pressure sensor, potentiometer throttle position, thermistor temperature sensor, a magnetic-electric sensor for detecting the top dead center (TDC) and simulating engine speed are designed. What have done above is the base of software design. Key Words: nature gas engine; controller; hardware design

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