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Journal articles on the topic 'AT89C52 Microcontroller'

Author: Grafiati

Published: 3 June 2025

Last updated: 20 July 2025

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1

Liu, Wei, and Yan Ping Wang. "AT89C52 Microcontroller-Based Electronic Locks Design." Applied Mechanics and Materials 685 (October 2014): 378–83. http://dx.doi.org/10.4028/www.scientific.net/amm.685.378.

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This paper describes a small, low cost, functional and practical design of electronic locks. The locks to AT89C52 microcontroller as the core, mainly composed of the microcontroller, LED digital tubes and relays. And through the C programming language, complete the functions of unlock password, prompt an error, LED display and timing, and even to achieve a function that when power-down the lock can remember passwords.

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2

Christian, Mbaocha. "Smart Phase Change-over system with AT89C52 Microcontroller." IOSR Journal of Electrical and Electronics Engineering 1, no. 3 (2012): 31–34. http://dx.doi.org/10.9790/1676-0133134.

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3

Wang, Hong, and Lili Wu. "Research on Bed Call System Based on AT89C52." Journal of Electronic Research and Application 9, no. 1 (2025): 254–62. https://doi.org/10.26689/jera.v9i1.9466.

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How to realize intelligent and fast bed calls has been a key concern of hospitals. The traditional wired bed call system is not only costly but also less efficient. In this paper, research on bed call systems based on AT89C52 microcontroller is carried out. The nurse-side host (AT89C52) and the bedside slave (AT89C52) communicate over long distances using wireless communication technology. The system transmits signals, including Liquid Crystal Display (LCD), voice announcements, and beeping alarms, to indicate the bed number requiring assistance. This allows the nurse to respond promptly. The system supports real-time updates, where calls and processing occur independently, ensuring efficiency. It is not only cost-effective but also enables a rapid and intelligent call-and-response process.

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4

Wang, Wen, Jie Qiong Li, Han Yang Qiu, and Zheng Lei Wang. "Portable Digital Liquid Density Measurement System Based on AT89C52." Applied Mechanics and Materials 530-531 (February 2014): 233–36. http://dx.doi.org/10.4028/www.scientific.net/amm.530-531.233.

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A portable digital liquid density measurement system was designed. According to Archimedes principle that a sinkers buoyant force in some liquid is related with liquid density, the system proposed converted analog signal of a pressure sensor into digital signal which can be processed by AT89C52 microcontroller using ADHX711 with high accuracy. Temperature calibration was considered in data processing, which made it possible to accurately measure liquid density at different temperatures. Experiment results show that the method proposed is superior to traditional methods.

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5

Nkolika, O. Nwazor. "Development of a Wireless Controlled Robotic Vehicle." European Journal of Advances in Engineering and Technology 6, no. 3 (2019): 52–58. https://doi.org/10.5281/zenodo.10687464.

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<strong>ABSTRACT</strong> This paper is on the development of a GSM (global system for mobile communication) and radio frequency remote controlled robotic car. It is very useful for accessing industrial areas that are prone to health hazards. They can also be used as a spy and for search and rescue missions in cases of emergencies or natural disaster. The robotic car uses a two-way control system which is the DTMF and radio frequency (RF) control.  When a mobile phone is pressed the keypad tone which is heard is a frequency. These frequencies are sent out from a sound clip (head set) of the phone to the DTMF decoder IC MT8870D; this decoder converts the frequencies from the keypad tone to a 4 bit digital binary codes readable by the microcontroller AT89C52. The microcontroller AT89C52 by a software program (assembly language program) uses these bits to assign a particular instruction or command to the relay driver to either turn ON or OFF. The relay drivers control the rotation (direction) of the motors which control the wheel of the robotic car either turn clockwise or counter clockwise.

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6

Farooq, Umar, Muhammad Usman Asad, Athar Hanif, K. M. Hasan, and Muhammad Amar. "Design and Implementation of a Fuzzy Logic Controller for Two Wheeled Self Balancing Robot." Advanced Materials Research 403-408 (November 2011): 4918–25. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.4918.

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This paper describes the design of a simple fuzzy logic controller for self balancing robot. The proposed controller is single input, single output controller. The input to the controller is tilt angle and the output forms the speed commands for the motors. The controller is designed using MATLAB and implemented with a low cost readily available AT89C52 microcontroller. Results have proved the validity of the proposed controller for balancing the robot.

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Sun, Mo Jie, Xing Shuang Wei, Wei Zhang, and Song Liu. "COD On-Line Monitoring Based on Photometric." Advanced Materials Research 616-618 (December 2012): 1930–34. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.1930.

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The chemical oxygen demand (COD) is an important indicator of the characterization of organic substances in water content, reflecting the situation of water pollution. This system takes the IC, A/D and AT89C52 as key module, according to Lambert-Bill’s law and colorimetric principle, uses silicon photovoltaic cells and operational amplifier to realize photoelectric conversion. Incident light and transmitted light intensity of liquid are measured. The microcontroller can be automatically calculated the solution of the chemical oxygen demand (COD) value. The system also has real-time clock, over-range alarm and other functions.

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8

Wang, Jun Fang, Chao Li, and Dong Dong Wang. "Design and Research for a New Car Moving Device of Remote Control." Advanced Materials Research 940 (June 2014): 188–91. http://dx.doi.org/10.4028/www.scientific.net/amr.940.188.

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In view of the fact that the complex control of car moving device, its small application range, the difficulty to reach the accurate location of vehicles and so on, therefor a new design and research for a car moving device of remote control is proposed; The Mecanum wheel is chosen to achieve the omnidirectional movement, so that the vehicle can reach the predetermined position quickly. The electro-hydraulic push rod is used to realize the automatic lifting ,and it is also convenient and efficient; In addition, AT89C52 microcontroller which cost less but can meet the requirements realize the control.

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9

Huang, JinXia, Yu Zhang, XiaoGuang Su, and SiQing Tian. "Research of Variable Application Control System Based on Fuzzy Control." E3S Web of Conferences 38 (2018): 01013. http://dx.doi.org/10.1051/e3sconf/20183801013.

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The AT89C52 microcontroller and the fuzzy control algorithm is used to design the automatic control system of variable Spraying pesticides. The system adjusts automatically the electric regulating valve according to given Spraying pesticides per unit area so that the actual amount of Spraying pesticides equal to the set value. The simulation model of automatic control system of variable pesticide application was established, and the controller was simulated by MATLAB / SIMULINK software fuzzy control toolbox. The simulation results show that the structure and algorithm of the proposed automatic control system of pesticide application is feasible, The system improves greatly pesticide utilization, reduce pesticide residues and environmental pollution.

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Bai, Qiu Chan, Chun Xia Jin, Ding Li Yang, and Ma Hua Wang. "Research on Data Display for New Electric Vehicle." Advanced Materials Research 694-697 (May 2013): 2675–79. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.2675.

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Based on the data display of instrument for the current electric vehicle is imperfect, this paper puts forward designing a generic electronic instrument of electric vehicle with speed, mileage and power data display function. The microcontroller of AT89C52 is the core of system design. The design uses Hall sensor as a speed detection sensor to realize the mileage/speed measurement display of electric vehicle. It uses the 24C02 saving the mileage information in case of power-down system, uses LED module in real-time displaying the speed, mileage and power, and provides the alarm function of hypervelocity. The design of the system is in real time, running well in the test, may be promoted to the electric vehicles research and development industry.

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Ubeku, E. U., and S. O. Igbinovia. "Optimal Utilization of Solar Arrays: Design and Implimentation of a Motorised Solar Energy Photovoltaic Array System." Advanced Materials Research 62-64 (February 2009): 533–36. http://dx.doi.org/10.4028/www.scientific.net/amr.62-64.533.

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In this paper a motorized solar energy collector system-a driver system that positioned the solar cell panel differently during day-time was design and implemented. The aim is to optimize the amount of solar energy that can be trapped from the sun using a solar cell panel. This is achieved by using a stepper motor, controlled by Atmel AT89C52 microcontroller, to align the panel such that all incident rays strike normal to the panel’s surface thereby maximizing the amount of solar energy that can be trapped from the sun. The alignment is time dependant. This model was implemented and tested and the results proved to be successful in maximizing the energy received from the sun than if the solar panel was fixed at a particular position.

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12

Mbachu, C. B., Abdulraheem Aminu, and S. A. Akaneme. "Automated Mould Cooling Technique for Improving Product Quality in an Injection Moulding System." European Journal of Advances in Engineering and Technology 7, no. 5 (2020): 21–26. https://doi.org/10.5281/zenodo.10666435.

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<strong>ABSTRACT</strong> The design and simulation of an Automatic water circulation process for injection mould cooling using an embedded system for temperature control in a plastic industry is the focus of this work. Injection mould cooling is one of the most important processes in the plastic manufacturing industry. More than one-third of all plastic products are injection moulded and mould cooling is essential in the production process. The optimum temperature or ejection temperature (T<sub>EJECT</sub>) of the material to be moulded is preset in the microcontroller. This temperature depends on the melting temperature of the plastic materials being used because different plastic materials have different melting temperatures. The system senses the temperature from the source particularly high temperature source via a heat sensor such as thermocouple. The sensor output signal is conditioned and fed to the microcontroller (here, AT89C52 microcontroller is used) which drives a relay through a switching unit for switching the system to ON-OFF position. The work also describes the system control action incorporated in the hardware for obtaining the desired cooling process. The design analysis software- matlab and excel, are used for simulation in addition to Embedded C and Proteus professional. The results obtained from the process shows that it is very viable as it saves substantial consumption of power, achieves reduction in quantity of water usage in cooling and also reduces material wastage. It is more economical than the manual mould cooling method by removal of drudgery and maintaining uniform cooling process.

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13

Li, Shumei, Xu Li, Lizhong Wang, and Hongbo Liu. "Study on the Fabrication of White Organic Light-Emitting Devices Using the Doping Characteristics of Rubrene and Programmed Test Circuit." Journal of Nanoscience and Nanotechnology 18, no. 12 (2018): 8409–13. http://dx.doi.org/10.1166/jnn.2018.16380.

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A white organic light emitting device with structure of ITO/2T-NATA(20)/NPBX(15)/DPVBi(15)/ Alq:Rub(10, x)/Alq3(40)/LiF/Al was fabricated using doping rubrene. When the concentration of rubrene is 3 wt.%, the chromaticity is the best (0.319, 0.317), and the color coordinates are stable. When the thickness of the doping layer is 20 nm, the efficiency and luminance of the devices are the highest, which are 5.1022 cd/A and 17130 cd/m2, respectively. On the basis, a test system is consisted of Solomon’s OLED display control driver chip SSD1306 and microcontroller AT89C52, which tests the OLED dot matrix through the program to determine whether the matrix has dead point. Through experimental comparison, the test results are consistent with the external power supply test. The system has the characteristics of high efficiency and display characters of dynamic and static pictures, which provides a feasible driving method for the practical application of OLED.

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14

Yang, Xiao Qiang, Ya Ming Gao, Xiao Long Wang, and Jun Han. "Distributed High-Precision Field Testing System of Construction Machinery Based on CAN Bus." Applied Mechanics and Materials 128-129 (October 2011): 825–28. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.825.

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The main objective of this work is development of a type of status parameter testing system based on CAN bus for construction machinery. Various difficulties due to over-abundant parameters of testing and controlling, many different types of transducer, changes and anomalies in the operation temperature and harsh EMI environment are considered in the accomplishment. The design of intelligent field testing node is demonstrated in detail. The intelligent node consists of embedded microcontroller AT89C52, high-precision signal conditioning circuits, CAN interface module and other peripheral circuits. The intelligent node uses software auto-zero correction and full-scale correction as well as the method of second-degree parabola interpolation to deal with the non-linear characteristic of the measured data. Hence, it implements the high-precision detection and measurement. In addition, the intelligent connects to the host computer via CAN bus to form a distributed high-precision status parameters testing system. The hardware circuit of operation status parameters measurement and communication interface circuit are developed and described, and the software is also accomplished with C language and LabVIEW. The system has the advantages of simple structure, reliable performance, significant capability of real time processing, powerful anti-jamming performance and so forth. Meanwhile, the system has great application prospect.

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15

Zhou, Chunxu. "Algorithm Design of Early Warning Seatbelt Intelligent Adjustment System Based on Neural Network and Big Data Analysis." Mathematical Problems in Engineering 2020 (November 20, 2020): 1–7. http://dx.doi.org/10.1155/2020/7268963.

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With the purpose to guarantee the safety of drivers and passengers as well as lower the death rate collision, the early warning seatbelt intelligent adjustment system is designed by using big data analysis technology based on the aspects of hardware equipment, database, and software program. In the hardware system, microcontroller AT89C52 is applied as the control core. By means of the sensor detection and drive control, the early warning safety belt tightening, locking and lifting, and other functions are realized. Meanwhile, various components of the hardware system are coordinated through debugging several modules in the hardware system and using the modified circuit to connect them together. We determine the relational rules of the database and create the corresponding database table, to provide sufficient data support for the realization of software functions. Using the big data analysis method to process the real-time detection data received by the sensor, the software functions such as timely tightening of safety belt, humidity relaxation, and over-rolling prevention can be realized according to different driving conditions of drivers and vehicles, respectively. The conclusion is drawn through the system test experiment: compared with the traditional regulation system, the design system has a higher degree of regulation, and the application of the design results to the actual vehicle can reduce the crash fatality rate of about 22.4%.

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Gao, Xue Fei, and Yong Li An. "2FSK Signal Generator Based on AT89C51 Microcontroller." Advanced Materials Research 722 (July 2013): 260–64. http://dx.doi.org/10.4028/www.scientific.net/amr.722.260.

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In order to simplify the devices used for generating the 2FSK signal, a 2FSK signal generator based on AT89C51 microcontroller is proposed in this paper. A digital base band signal is inputted to the microcontroller through one of I/O ports. Then microcontrollers program is executed, which are designed for generating PWM signals according to the sine waveforms corresponding with 2FSK signals required. Consequently, an appropriate PWM signal is outputted from another I/O port. This PWM signal is sent into a simple second order passive low-pass filter, and the 2FSK signal can be obtained on the output side of the filter. The 2FSK signal generator makes full use of the resources of the microcontroller, and as a result, it is simple, easy to use, economical and reliable.

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17

Zhang, Li Rong. "Intelligent Signal Generator Based AT89C51 Microcontroller." Applied Mechanics and Materials 152-154 (January 2012): 1650–57. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.1650.

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In order to precisely control signals generators，we designed hardware of waveform signal generator by using AT89C51 Microcontroller, on this basis, design program of the sine wave, triangle wave, square wave and saw tooth wave detailed , final testing of the system as a whole and performance testing , these have high practical and useful in the production.

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18

Yang, Jun Kai. "Design and Production of AT89S52 Microcontroller Tachometer." Advanced Materials Research 709 (June 2013): 449–52. http://dx.doi.org/10.4028/www.scientific.net/amr.709.449.

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t proposes a tachometer program that consists of AT89S52 microcontroller and Hall sensor. The tachometer is based on acquisition of pulse signal issued by Hall sensor and microcontroller count. Then, after the data calculation, analysis, and treatment by internal program, real-time speed can be displayed through LED. The tachometer has advantages, such as simple hardware structure, high measurement speed, high precision, and simple operation.

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Dwijaputra, IGN Agung, I. Made Satriya Wibawa, and Nyoman Wendri. "Designing CCTV Working Optimization System as Room Security Using Passive Infrared (PIR) Sensor Based on AT89S52 Microcontroller." BULETIN FISIKA 19, no. 2 (2018): 46. http://dx.doi.org/10.24843/bf.2018.v19.i02.p02.

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A CCTV optimization system has been designed using PIR (passive infrared) sensor based on AT89S52 microcontroller. This device consists of several series of sensor circuit, AT89S52 microcontroller minimum system, stepper motor driver circuit, push-on circuit and alarm circuit. The working system of the room safety device is when the PIR (passive infrared) sensor detects the movement of the object, then the output of the sensor is forwarded to the microcontroller, the microcontroller will process and convey to the driver circuit to drive the stepper motors that moves the CCTV. The push-on circuit is connected to the microcontroller port for controlling the movement of the stepper motor so it won’t rotate beyond 180 degrees, and for the safety of the room, an alarm circuit is connected to the microcontroller port as an alarming sound generator.

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20

Gothwal, Pushpa, and Sandesh Singh Shekhawa. "Three Dimensional Cube." International Journal of Engineering & Technology 7, no. 3.30 (2018): 90. http://dx.doi.org/10.14419/ijet.v7i3.30.18207.

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Three dimensional cube is the 3D display device implemented using RGB LED. The objective of this paper to design a 3D CUBE using shift registers controlled by the microcontroller. It consists of using a 8-bit microcontrollers (Arduino Mega 2560, Arduino Uno and AT89s52) with on chip ADC, PWM and UART, RGB LEDs, pulse sensor (SEN-11574), shift registers (74HC595N) as core element of the system. It has six keys used for selecting the defined patterns like square, cube, heart traingle etc.. The application of this project is used for entertainment, display the measured physiological parameter (Heart beat), learning and teaching purpose. It can also help to medical professionals for teaching purpose, defence personals in RADAR and architects.

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21

Tri Isra Janwardi. "Design of Digital Height Measurement Based Microcontroller AT89C51." Journal of Science Technology (JoSTec) 1, no. 1 (2019): 29–35. http://dx.doi.org/10.55299/jostec.v1i1.49.

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Height measuring instrument is a tool that can be used by humans to assist in the process of determining height. Most height gauges in use today are analog or manual height gauges. In today's technological developments, the author will make an automatic height measuring device using ultrasonic sensors to calculate data from received objects. The sensor is used to measure the working distance at a frequency of 40 KHz so as not to interfere with human hearing. As the control center of this measuring instrument, it uses the Arduino Uno Microcontroller. This measuring instrument is capable of measuring an object with the accuracy of the sensor reading the data, namely the maximum height of 195 cm and the minimum height of 50 cm. The advantage of this tool is that it uses a microcontroller and sensor technology, while to display measurement results using an LCD and LCD measuring instruments can move according to the height of the object, to move the LCD a DC motor is used as the driver. And the measurement results are issued through the speaker in the form of sound that has been stored on the SD Card in WAV format, making it easier for blind people to know the user's height. The drawback of this tool is the construction of the tool and sensor readings, so that the results obtained from the measurements still contain some errors.

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22

Sharma, Udaya, Deepak Rasaily, Tashi Rapden Wangchuk, Ankita Pradhan, and Kiratti Upashna. "Automatic Dipper Circuit for Vechicle using AT89S52 Microcontroller." International Journal of Engineering Trends and Technology 33, no. 8 (2016): 373–74. http://dx.doi.org/10.14445/22315381/ijett-v33p272.

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23

Tang, Jing, and En Xing Zheng. "The Research on Software of the Temperature Control of Motor Speed System." Applied Mechanics and Materials 29-32 (August 2010): 349–53. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.349.

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The paper designs a temperature control system based on AT89C51 and DS18B20. The design uses the DS18B20 digital temperature sensor as the temperature acquisition unit and the AT89C51 microcontroller unit to control them, not only have the advantages that easy to control and with good flexibility, but also can greatly enhance the controlled temperature index.

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24

Ding, Shoucheng. "The Liquid Flow Measuring Device Based on AT89C51 Microcontroller." Advanced Science Letters 11, no. 1 (2012): 638–41. http://dx.doi.org/10.1166/asl.2012.2939.

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Simanungkalit, Benny Agus. "Microcontroller-Based Vehicle Parking Automation Design AT89S51." Journal of Science Technology (JoSTec) 1, no. 1 (2019): 8–14. http://dx.doi.org/10.55299/jostec.v1i1.46.

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The development of the world of transportation, especially land transportation such as cars as well as the development of shopping centers, restaurants, entertainment and recreation facilities that are growing very rapidly make every entrepreneur who manages parakeet lands to think about parking spaces for future visitors. Customers will feel comfortable and calm if they are easy to find a parking space for their vehicle and easy to find their vehicle again. With this condition, it is necessary to have a tool that can tell customers where the empty parking blocks are so that customers no longer need to circle around just looking for empty parking blocks. The more crowded visitors who come to the parking area, the more busy the parking attendants who manage parking are Manually. Therefore, we need a way to solve this problem. Based on these problems, this research designed a vehicle parking automation based on the AT89S51 microcontroller where the microcontroller will check the condition of the parking entrance, if there is a vehicle in front of the door, the microcontroller will check the conditions in each place. If there is an empty place, the LCD will display the place, then the microcontroller will order to open the parking door. The door will close again after the vehicle enters. This process will continue until all parking spaces are filled.

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26

Nurhayata, I. G., I. W. Sutaya, and K. U. Ariawan. "The development of prepaid water meters based on AT89S52 Microcontroller." Journal of Physics: Conference Series 1810, no. 1 (2021): 012004. http://dx.doi.org/10.1088/1742-6596/1810/1/012004.

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27

Al-Araji, Ahmed. "Digital Protection System of the Engine-Generator Based Microcontroller AT89C51." Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), no. 1 (October 25, 2021): 38–48. http://dx.doi.org/10.55562/jrucs.v24i1.463.

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This paper describes the design and implementation of the engine-generator protection circuit based microcontroller AT89C51, which is very popular and is used in a huge number of applications in professional systems and amateur projects. This digital electronic circuit shows further possibilities of improvements, and is employed as a device to protect the engine-generator from the fault type that may occur during operation of the generator such as over heat; oil alert; over speed; and over voltage that will damage the engine and exciter of the generator. It is also used to protect all devices that are connected to the generator. The engine–generator protection can be done by gathering data from the sensors attached to the microcontroller and some other electronic circuits.

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-Qun, Qi Fa, Jing Xue-Dong, and Zhao Shi-qing. "Design of stepping motor control system based on AT89C51 microcontroller." Procedia Engineering 15 (2011): 2276–80. http://dx.doi.org/10.1016/j.proeng.2011.08.426.

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Melalolin, Ivan C. "Security Design of Safety Deposit Box Based on Microcontroller AT89S52." Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan 1, no. 1 (2019): 8. https://doi.org/10.34010/telekontran.v1i1.1563.

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Automatic safety deposit box is a type of safe that is designed to work to secure any valuables with safety devices that are reliable. Safe uses a motion sensor as detection of human activity in the area before safe. Magnetic sensors to detect the presence of a safe deposit box at the door is opened or closed with a locking solenoid automatic. Safe is designed differently by having two doors where both doors are in and serve as a safety in the first door cracked. The second door has an electric circuit shock. Access to safe uses two types of passwords can be changed by the owner. Another advantage is that using a GSM modem as a liaison between the safes with the owner. Each execution of the safe will be notified to the owner via text message to mobile phone owners. Number to be replaced as well as desired. Each character passwords and destination number will be displayed on the LCD. Safe also features an alarm and LED indicator.

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30

Pathak, Kshitij, and Nihal Nipane. "Design and Simulation of Smart Touchless Dispenser Using AT89C51 Microcontroller." International Journal for Research in Applied Science and Engineering Technology 13, no. 4 (2025): 5355–59. https://doi.org/10.22214/ijraset.2025.69596.

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Abstract: In the wake of increasing hygiene awareness, automation in liquid dispensing systems has gained significant relevance. This paper presents a low-cost, efficient, and compact solution for a smart touchless dispenser using the AT89C51 microcontroller. The system is designed to activate and deactivate a DC motor based on simple button-based user input, mimicking gesture control without the need for expensive sensors or complex interfacing modules. The use of push buttons as gesture proxies simplifies the hardware design and makes the system accessible for educational and prototype purposes. The motor-driven mechanism facilitates the dispensing of liquid such as soap or sanitizer in a contactless manner. The primary objective is to demonstrate how basic embedded system components can be utilized to implement practical automation with minimal resources. The proposed system ensures easy integration, low power consumption, and real-time response, making it ideal for public hygiene systems and small-scale embedded projects.

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31

Taj, A. B., and M. Ahmad. "Design and Implementation of Line Follower Robot Based on Single Pole Double Through Relay by Using Microcontroller." Nucleus 59, no. 2 (2022): 61–67. https://doi.org/10.71330/nucleus.59.02.1253.

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The aim of this work is to achieve an efficient control design for the line follower robot based on Single Pole Double Through (SPDT) relays by using PROTEUS professional software and its practical implementation. It followed a white line on the black background, detects turns or nonconformities, and operates the motors very efficiently by using the microcontroller. Infrared (IR) sensors are used to sense the white line (path). Differential directing was utilized to turn ON the robot. In this article, we have the voltage from the comparator by using the IR sensors. Microcontroller AT89C51 reads the voltage from comparator and operates the relays and these relays further operate the Direct Current (DC) motors. Each rear wheel has a dedicated DC motor while the front wheel is free to rotate. The design and hardware implementation with microcontroller are presented in this paper. Multiple tests were carried out on the robot for validation of the ability to follow the white line by adopting the accurate path and successfully achieving the target. It is worth mentioning that the robot has successfully achieved the target by using the AT89C51 microcontroller.

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32

Rui, Cao, and Kong Jun Bao. "Design of Temperature Measurement System Based on Microcontroller." Applied Mechanics and Materials 513-517 (February 2014): 4039–42. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.4039.

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This temperature measurement system is based on the control of AT89S52 single chip microcontroller, with temperature display function. Temperature information is changed into digital signal directly by a single bus digital temperature sensor DS18B20, and the digital signal is sent into microcontroller for real-time acquisition. The results are displayed through LCD module 1602 in real time. The system is with the characteristics of low cost, high precision, stable performance and convenient operation. The system can be extended to multi-point temperature detecting system easily, and adding temperature transfinite alarm function.

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33

Sapna Gangrade et al. "Password Based Door Lock System Using 8051 Microcontroller." Proceeding International Conference on Science and Engineering 11, no. 1 (2023): 75–80. http://dx.doi.org/10.52783/cienceng.v11i1.95.

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This circuit can be used as a warning device which triggers an alarm whenever the temperature exceeds a preset level. The project is built around AT89S52 microcontroller and uses 5 volts power supply. It detects fire and automatically switches on the motor and buzzer. It can be used to detect fire and to control fire. This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.

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ANUJA, A., DG LOUKYA, RATNAM JUSTIN, and IMMACULATE MARY GERARDINE. "MODELING AND SUPERVISION OF SMART TRAFFIC LIGHT CONTROLLER USING AT89C51 MICROCONTROLLER." Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/ Journal of Tianjin University Science and Technology 56, no. 09 (2023): 215–25. https://doi.org/10.5281/zenodo.8375509.

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<strong>Abstract</strong> Traffic light control systems are widely used to monitor and control the flow of vehicles through the junction of many roads. They aim to realise smooth motion of cars in the transportation routes. However, the synchronisation of multiple traffic light systems at adjacent intersections is a complicated problem given the various parameters involved. Conventional systems do not handle variable flows approaching the junctions. In addition, the mutual interference between adjacent traffic light systems, the disparity of cars flow with time, the accidents, the passage of emergency vehicles, and the pedestrian crossing are not implemented in the existing traffic system. This leads to traffic jam and congestion. We propose a system based on AT89C51 microcontroller that evaluates the traffic density using IR sensors and accomplishes dynamic timing slots with different levels.

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Yang, Jun Kai. "Design of Intelligent Flushing System." Advanced Materials Research 709 (June 2013): 445–48. http://dx.doi.org/10.4028/www.scientific.net/amr.709.445.

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The design uses intelligent flushing system simulation demonstrator developed by C51 series microcontroller (AT89S52) to achieve light control automatic flushing, and tap water leakage automatic detection and alarm. This system is characterized by high rate of water saving, sanitary, convenient, and low cost.

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Jurnal, Redaksi Tim. "DESAIN SISTEM ALARM MOBIL BERBASIS SMS." Sutet 7, no. 1 (2018): 1–7. http://dx.doi.org/10.33322/sutet.v7i1.162.

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The alarm device is very important in a vehicle, especially on four-wheeled vehicles. Alarm device installed to avoid in case of danger of theft or destruction of the car. So designed car alarm system that can send short message to car owner who use AT89S52 microcontroller. The hardware arrangement of the car alarm system uses the SMS-based AT89S52 microcontroller in this design, consisting of four main parts of the circuit, the minimum system circuit of microcontroller, power supply, serial communication, Input / Output. In SMS text sent from Wavecom M1306B modem and received by mobile (mobile phone) to SMS center or SMS Center flows in form of PDU (Protocol Data Unit). In the sms format is divided into several segments of data that each segment has a specific purpose. The segments are: SMS center number, destination number, bytes for the purpose of setting this SMS and most important is the SMS content that has been changed in the form of a PDU. To be able to send or upload SMS data to the modem and ordered the modem to send SMS data it required AT Command instructions.

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Zhang, Jian Bin, Ming Fang Zhu, Yan Ling Ren, and Jian Lu. "Design of Stereo Frequency Modulation Exciter Controlled by Microcontroller." Applied Mechanics and Materials 29-32 (August 2010): 796–801. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.796.

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A new stereo Frequency Modulation exciter scheme for short-distance wireless communication is proposed. It adopts a stereo FM IC BH1415 to transmit audio FM signals, and its transmitting frequency is controlled by microcontroller. The basic principle of phase-locked loop for FM is analyzed, and the audio FM circuit based on BH1415 and the controlling method based on AT89C51 are introduced. Test results indicated that, the audio FM Exciter had simple structure and higher reliability, each parameter can meet the demands of FM broadcasting system, and it has some scalability.

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Al-Obaidi, Mohanad Ali Meteab. "Alarm Emergency in Virtual Small City." Al-Mustansiriyah Journal of Science 27, no. 5 (2017): 64. http://dx.doi.org/10.23851/mjs.v27i5.169.

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In this paper a control AT89C51 microcontroller system was proposed to used in the design of alarm emergency in virtual small city. The proposed system includes personal computer (PC), monitoring, control circuit which has a microcontroller. When the accident accrued, the system sends alarm from any anywhere compromised with a number of the street to the emergency office and emergency alarms bureau official received by the monitoring that appear on the map and this point sends warning.

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Lv, Meimei, Jigang Wang, Shizhe Liu, and Lufeng Qiao. "Design of programmable filter based on microcontroller." Journal of Physics: Conference Series 2819, no. 1 (2024): 012046. http://dx.doi.org/10.1088/1742-6596/2819/1/012046.

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Abstract The system is designed with a microcontroller (AT89S52) as the core, developed based on the Keil 51 software system, combined with LCD display and necessary peripheral circuits to form a programmable controlled high-precision filter. The system mainly consists of the amplifier module, filter module, parameter setting and LCD display module, and amplitude-frequency characteristic testing module. The programmable control of the amplifier consists of a D/A converter DAC0832 and a programmable filter MAX262. By setting the amplifier and filter parameters on the keyboard, the gain and step adjustment can be achieved with high accuracy. The amplitude-frequency characteristic test signal source is implemented by DDS. Due to the use of a software operating system and a Chinese LCD module for display, this programmable filter provides a very user-friendly human-computer interaction interface.

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Jin, Lin, and Tong Zhao. "Granary Temperature and Humidity Detection System Based on MCU." Advanced Materials Research 605-607 (December 2012): 941–44. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.941.

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The granary temperature and humidity detection system, it is used AT89C51 as the main control core, and used the RS232 bus communication to realize the granary temperature and humidity control. The host microcontroller is depended on the AT89C51 to drive, and to display temperature, humidity and brightness, at the same time through the keyboard to enter the master information. The attached master machine used STC12C2052AD as the control unit, the Digital Temperature and humidity data acquisition used sensor SHT11, in each of the master machine and attached machine use of serial communication. When the temperature and humidity exceed the set values, it will alarm.

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Zhang, Wei Ping. "Design and Study on Analog Modulation Signal Source Based on AT89C51 Microcontroller." Applied Mechanics and Materials 192 (July 2012): 341–45. http://dx.doi.org/10.4028/www.scientific.net/amm.192.341.

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At present, the analog signal source in a traditional sense is far away from being sufficient to meet the needs of the modern development. Besides, the emergence of the direct digital synthesis (DDS) technology brings about a new vitality to the electronics technology of the modern times. However, because of the characteristics of the digitization, the direct digital synthesis still has the problems (the limited the output frequency range and the large spurious output). For this reason, it is particularly important to solve these problems currently. In this paper, the author carries out an analysis on the circuit characteristics of the DDS system and the analog modulation signal source system, studies their performances and characteristics, and also makes a design on both software and hardware that are based on the analog circuit and AT89C51 microcontroller system. This system is mainly composed of the microcontroller control module, the frequency synthesis module and the multiplier module. The DDS frequency synthesizer can work stably and is easy to realize. Also, the high resolution of its output frequency can meet the requirements of people in the modern times.

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Ibrahim Khalil, Wail. "Interface of Microcontroller Implementation of Voice Recognition for Person Authentication." University of Thi-Qar Journal for Engineering Sciences 4, no. 3 (2013): 77–91. http://dx.doi.org/10.31663/utjes.v4i3.188.

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Voice is used in this proposed for the authentication and display information of registered person and find whom is authorized to be access or not. The reason for choosing voice of human because is considered part of biometric system method and is easily being reproduced by human. Besides that, usage of voice gives control system that be effective and convenient to be used. This proposed involve a simple system that consists of voice recognition software and AT89S52 microcontroller with LCD to build up the system. This work is able to recognize the command trained by the user and successfully gives the correct output.

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Kumar, Akshay, Gaurav Mishra, Nandini Asthana, and Atul Kumar Yadav. "Microcontroller Based Under/Over Frequency Relay for Power System Protection." International Journal of Advance Research and Innovation 2, no. 1 (2014): 67–70. http://dx.doi.org/10.51976/ijari.211412.

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This paper investigates the frequency fluctuation in power system and protect the power system from its harmful effects. Therefore we design a Microcontroller Based Under/Over Frequency Relay. In this paper we use microcontroller AT89S52 for protecting the power system from the problem of frequency fluctuation. When frequency goes below or above from desired value then electromagnetic relay trip and isolate our power system from its harmful effect. Electromechanical protective relays operate by either magnetic attraction, or magnetic induction. Frequency Variation also decrease the life of the equipment and directly affect the overall production of the plant.

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Rafika, Ageng Setiani, Asep Saifudin, and Jesus Gregory. "PENGHANCUR MUSUH DENGAN ROBOT ARTILLERY LINE FOLLOWING BERBASIS MIKROKONTROLLER AT89S52." ICIT Journal 5, no. 2 (2019): 161–66. http://dx.doi.org/10.33050/icit.v5i2.430.

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Pada era teknologi yang berkembang dewasa ini. Dalam dunia robotik, banyak sekali dibuat bermacam-macam robot yang berguna untuk mempermudah pekerjaan manusia. Robot tersebut digunakan untuk meringankan serta membantu pekerjaan manusia mulai dalam bidang perindustrian, militer, hingga dalam kehidupan rumah tangga sehari-hari. Dengan pesatnya perkembangan politik dunia yang sangat signifikan saat ini, dimana setiap negara ingin memperluas wilayah kekuasaan dengan melakukan invasi ke negara-negara lemah. Sebagai wujud cinta tanah air maka kiranya kita wajib menjaga pertahanan dan keamanan demi mewujudkan suasana yang aman dan damai di negara kita maka penulis mencoba mengimplementasikan masalah itu dengan menciptakan suatu robot otomatis yang dapat membantu khususnya bidang militer untuk menjaga perbatasan negara kita. Prinsip kerja dari robot yang dibuat ini yaitu dengan scanning daerah yang telah di berikan line following dan bila ada benda asing maka robot akan membidik kemudian menembak untuk menghancurkan objek dalam hal ini yaitu musuh yang menyelinap, yang kemudian robot akan menyingkirkan bangkai objek agar jalannya robot tidak terganggu dan meneruskan pengamanan. Sebagai pusat control dalam hal ini digunakan Microcontroller AT89S52 sehingga robot ini dapat berjalan secara otomatis, sesuai program yang telah dimasukkan dalam chip tersebut.  Kata Kunci Teknologi, robot, Microcontroller.

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Xiao, Zhi Hong, Liang Qian Zhuang, and Jun Shen. "Design of the Counting System Based on Microcontroller." Advanced Materials Research 898 (February 2014): 933–36. http://dx.doi.org/10.4028/www.scientific.net/amr.898.933.

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A counting system based on AT89S51 and optoelectronic switch sensor is introduced which was installed in a sewing machine assembly line. The system is consists of microcontroller, keyboard circuit, signal detection circuit, watchdog circuit, clock circuit and display circuit. It can detect and display actual number of products on the assembly line. The experimental results show that the system has a high level of measurement accuracy and an anti-jamming capability.

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Khairurrijal, Muhammad M. Munir, Asep Suhendi, Hendrayana Thaha, and Maman Budiman. "An AT89S52 microcontroller-based single board computer for teaching an instrumentation system course." Computer Applications in Engineering Education 15, no. 2 (2007): 166–73. http://dx.doi.org/10.1002/cae.20107.

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Zhang, Zhi Yong, and Tie Liang Guo. "Design of Water Bath Temperature Control System Based on DS18B20." Advanced Materials Research 462 (February 2012): 753–56. http://dx.doi.org/10.4028/www.scientific.net/amr.462.753.

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The features and working principle of single-wire digital temperature sensor DS18B20 are introduced. Through applying single chip microcontroller AT89C51, the water bath temperature control system is designed based on DS18B20. The paper also gives the structure of the hardware device, main design of software and the C51 program of DS18B20. In the end, the experimental result shows that the DS18B20 system has a higher accuracy.

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Vitria, Rikki. "PEMANFAATAN MIKROKONTROLER AT89S51 SEBAGAI PENGGESER FASA PADA ANTENA ARRAY." Elektron : Jurnal Ilmiah 4, no. 2 (2018): 1–14. http://dx.doi.org/10.30630/eji.4.2.27.

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Utilization of microcontroller especially MCS-51 family has been widely implemented in various applications, such as control and telecommunications applications. One of them is the phase shifting array antenna in the telecommunication field. The Array Antenna was designed from some of dipole antenna. Each element at dipole antenna has a different phase and can be controlled electronically. The phase shifting was done using AT89S51 microcontroller that functioned as an electronic switch on the transmission cable connection. The phase of the array antenna will be moved without moving the structure of the array antenna itself, so that the direction of radiation pattern can be changed in accordance with the phase shifting between the antenna elements.

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Xu, Shan Zhen, Yun Chi Chen, and Cheng Wang. "Multi-Parameter Test System Based on the Microcontroller and Labview." Advanced Materials Research 590 (November 2012): 329–32. http://dx.doi.org/10.4028/www.scientific.net/amr.590.329.

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It put forward the design scheme of the multi-parameter data acquisition based on the existing sensors and related test equipment in laboratory. The system selected the acceleration and speed signals as the measured parameters. The PC computer was taken as the host computer and the PCI-6014 data acquisition card was used to achieve the data collection, analysis, storage and display of various parameters. At the same time the host computer sent the control signal to SCM. The SCM of AT89S52 was used as the slave computer to receive the control signal from the host computer and give an alarm signal. To achieve the real-time control for the data acquisition, the communication between the host and slave computer was achieved via the RS232 serial communication technology.

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Senthur, Selvi V., and Mubarakkaa M. Fathima. "By using Internet of Things Analysis of Waste Monitoring System." Journal of Web Development and Web Designing 3, no. 3 (2018): 15–20. https://doi.org/10.5281/zenodo.2245409.

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<em>Metropolitan territories in urban areas are confronting poor strategy for waste administration. Since there is quick increment of urban populace unhygienic conditions are winning. To maintain a strategic distance from this condition and to enhance the personal satisfaction powerful waste administration is utilized. In proposed framework, squander container is checked with the sensors and GSM framework. An android application is utilized to screen data with respect to squander independent of area. By this squanders are expelled effectively.</em>

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