Academic literature on the topic 'PIC Microchip Microcontroller'

The course of microcontrollers oriented to practical skills that is lectured at the Electronics Faculty of Vilnius Gediminas Technical University is presented and discussed in this paper. This course is dedicated to the students of the Basic studies. The laboratory works and the course project, which are of high importance in obtaining the capability to develop microcontroller-based control systems, play a key role in this course. The Mid-range architecture family of PIC (Peripheral Interface Controller) microcontrollers developed and produced by the Microchip company was chosen as the basis for the studies. The structure of lectures, the description of specifics of laboratory works, the course project and the examination procedure are presented here as well. The answers of students indicate that the course has good appreciation. This course is evaluated positively by the institutions involved in the development of the microcontroller-based devices.

Monitoring the delivered power quality (PQ) to a critical load, is a worry issue since it is matter as much as critical or quality sensitive equipment connected to the electrical network. Various PQ problems such as noise, voltage imbalance, waveform distortion, phase imbalance, phase sequence, over voltage or sag are the most popular quality problems that could be detected and fixed if needed. The present work presents a design and practical implementation of electronic embedded system to monitoring the sequence of a three phase electrical system and detects the occurrence of any change in the sequence and fixes it online, correct the phase sequence immediately during less than 70 milli-seconds. PIC Microchip microcontroller has been used as the core of the present system, where the correction of the phases has been achieved by using traditional electromechanical relays. The system has been tested successfully and it functions properly even with multiple sequence changes.

The proposed system in this paper describes the design and implementation of a Wireless Sensor Network (WSN) based on ZigBee technology to monitor the history and current temperature information of remote locations. The system is an electronic embedded system that contains: Base Station with coordinator ZigBee, End nodes with router ZigBee, and host computer as a data base (DB) server. The base station is responsible for data collecting, a display for end node sensor readings, and TCP/IP communication with the host computer. End nodes are directly connected with sensors and transmitting the readings of these sensors to the base station. The host computer is responsible for building a data base from end nodes sensor readings. The Microcontroller Units (MCUs) from Peripheral Interface Controller (PIC) family have been used and the firmware has been developed using C language with MikroC Pro which is a full-featured ANSI C Compiler for Microchip PIC MCU as a development environment.

This paper aims to present a smart, particle swarm optimization (PSO)-based, real time configuration strategy for a photovoltaic (PV) module array in the event of shadow cast on a PV module(s) and/or module failure as an effective approach to power generation efficiency elevation. At the first step, the respective maximum output power levels provided by a normal operating array at various levels of irradiation and module surface temperatures are measured and entered as references into a database. Subsequently, the maximum output power (MPP) level, tracked by a MPP tracker, is feedbacked for a comparison with an aforementioned reference as a way to tell whether there is either a shadow or a malfunction event on a PV module(s). Once an abnormal operation is detected, the presented smart configuration algorithm is performed to reconfigure the PV module array such that the array is operated at the global MPP as intended. Furthermore, by use of a PIC microcontroller that is a family of microcontrollers made by Microchip Technology for compact implementation, this study is experimentally validated as an effective approach to locating the global MPP at all events.

Malaysia had in the past sent two remote sensing satellites to orbit by collaborating with foreign space companies to build homegrown capacities for space technology development. At the educational institutions, a pico-satellite development program would be an ideal first step to establish such capacity as students could gain the experience and know-how through the complete cycle of designing, building and testing a satellite. As it is now, some of their overseas counterparts have already succeeded in running CubeSat programs due to strong support from kit manufacturers and their national space agencies. However, the cost to purchase such kits could be discouraging and National Space Agency (ANGKASA) recognises the needs to initiate some designs that could be used or referred to for further development or expansion. In this paper, a hardware design of On-Board Data Handling (OBDH) board using PIC Microcontroller is presented. OBDH is a main subsystem which controls all subsystems in the satellite. It provides a series of important services like command, telemetry, data communication, data acquisition, process, storage and management. The PIC Microcontroller made by Microchip Corporation is chosen as it is widely used by the industry and academia in Malaysia. The 16-bit PIC24 microcontroller has been recognized as a suitable part due to its performance, memory, peripherals, cost effective solutions as well as availability. The method used in designing the OBDH in this pico-satellite is first based on a main mission to investigate ionospheric effect on GPS signal transmission. Other considerations taken are that the parts used should be of commercial off the shelf product and having its own development board for ease of testing. The expected result would be the successful arrangement of all required parts in limited pico-satellite’s size and the accomplishment in achieving the satellite’s missions through simulation.

Because of their good speed control and high torque, DC motors are widely used in many industrial and robotic applications. Robotic application of DC motors often required, in addition to driving loads at constant speed or torque, the ability to vary the speed of the motor. An efficient and economically feasible intelligent DC motor speed controller is designed and constructed based on the rules of closed loop feedback control system. There are two main parts in the hardware development: PIC16F873A microcontroller and its support circuitries and external interface circuitries between motors and microcontrollers. Data processing and control program (firmware program) was run on PIC microcontroller and its on-chip A/D converter, PWM module and external circuitry was used to send and receive the data signal from the motor for control application. The firmware program was written in assembly language and converted to machine language (Hex code) by using Microchip MPASM macro assembler. These machine codes are downloaded into the PIC microcontroller by using EPIC microcontroller programmer. Through prototyping and implementing on a PIC microcontroller, the system was then be tested and used to control the speed of a small DC motor until the required criteria were achieved.

The aim of master thesis is implementation of USB host in a microcontroller PIC. The thesis contains description of ways of peripherals to computer connections with detailed description of USB bus. There are also discussed several approaches in implementations USB host for embedded systems. A concept of layered USB host system is designed on the basis of analysis of the state of the art. Finally, the designed system is implemented in microcontroller. Resulting firmware of development kit is tested on real USB device.

This paper presents a theoretical model of electronic technology applied to Precision Farming and becomes a grant to further increase the use of Precision Farming, setting that is transforming the way you get the results from the works in the field. The design of a radio frequency identification system, currently known as RFID, to be used in the identification and traceability of cattle is the goal to be achieved. It seeks initially emphasize the definition and the use of the use of Precision Farming as a routine in the activities of the field in Brazil. How is the cattle industry and the Precision Farming definition are important items to achieve the proposed goal. The SISBOV system and traceability are presented, showing its importance, but not the obligation deployment along to landowners who work with the creation and marketing of cattle and their meat products. Shows the definition of microprocessors and microcontrollers, their internal architectures and all the associated peripherals to them and is also shown as the definition of embedded systems has made a revolution in the design of these. Plot a marketing scenario and use of electronic products in the Brazilian commercial sphere, indicating how the delay in using technology more turns in the electronics consumers than in technology trainers. Emphasizes in the principle of operation of RFID systems and which the communication protocols that are used. The reader RFID design and miniaturization of electronics has enabled the creation of a device with surface mount technology decreasing the dimensions of the printed circuit board and allowing the reduction of cost in the design of this system. We present all the peripherals that make it up and the way they connect with the master processor, including the slave processor which performs the digital input and output functions and the keyboard. Communication protocols and flowcharts show the use of known commercial channels in using software. The use of solar energy is presented as an alternative source of electric power supply in the operation of the reader equipment. The high cost of commercial RFID modules prevented the practical implementation of the system.
Este trabalho apresenta um modelo teórico da tecnologia eletrônica aplicada à Pecuária de Precisão e transforma-se em um subsídio a mais para incrementar o uso da Agricultura de Precisão, definição que está transformando a maneira como se obtém os resultados advindos do trabalho no campo. O projeto de um sistema de identificação por radiofrequência, conhecido atualmente como RFID, a ser utilizado na identificação e rastreabilidade de gado bovino é o objetivo a ser alcançado. Procura-se inicialmente enfatizar a definição e a utilização do uso da Agricultura de Precisão como uma rotina nas atividades do campo no Brasil. Como está à atividade pecuária e a definição de Pecuária de Precisão são itens importantes para alcançar o objetivo proposto. O sistema SISBOV e a rastreabilidade são apresentados, mostrando a sua importância, mas não a sua obrigação de implantação junto aos proprietários rurais que trabalham com a criação e comercialização de gado e seus produtos cárneos. Mostra-se a definição de microprocessadores e microcontroladores, suas arquiteturas internas e todos os periféricos associados a eles e também é mostrado como a definição de sistemas embarcados tem realizado uma revolução no projeto destes. Traça-se um cenário da comercialização e uso de produtos eletrônicos na esfera comercial brasileira, indicando como o atraso no uso da tecnologia nos transforma muito mais em consumidores de produtos eletrônicos do que em formadores de tecnologia. Enfatiza-se o princípio de funcionamento de sistemas RFID e quais os protocolos de comunicação que são utilizados. O projeto do leitor RFID e a miniaturização da eletrônica possibilitou a criação de um equipamento com tecnologia de montagem em superfície diminuindo as dimensões da placa de circuito impresso e possibilitando a diminuição do custo no projeto deste sistema. Apresentam-se todos os periféricos que o compõem e a maneira como se interligam com o processador mestre, inclusive o processador escravo o qual executa as funções de entrada e saída digitais e o teclado. Protocolos de comunicação e fluxogramas evidenciam a utilização de canais conhecidos comercialmente na utilização de software. O uso da energia solar apresenta-se como uma alternativa de fornecimento de alimentação elétrica no funcionamento do equipamento leitor. O alto custo dos módulos RFID comerciais inviabilizou a parte prática do sistema.

The purpose of this reasearch was to develop a respiratory monitoring system using a reflective object sensor based belt to measure the thoracic expansion of a neonatal for future application at the medical center of the Universidad Evangelica Boliviana (UEB). This medical center, being founded by the UEB University, is dedicated to help and serve the poor and currently has no respiratory monitoring system. The methodology used was first to build and test the respiratory sensor belt and test the relationship between the blet expansion and the voltage generated. The, to incorporate the respiratory sensor belt in a system that would allow individual testing as well as group testing in a wireless network. The system was simulated using an expandable plastic container that was expanded and extracted periodically, registering the results in a MATLAB software. The system gave successful results and generated the frequency results of each cycle, average frequency and deviation frequency. The system demonstrated to be reliable and to have repeatable results.

This Diploma thesis deals with creation and realisation of extensions for medical dental unit Vizio. Specifically, it deals with electrotechnical solution and software for capacitive keyboard and with proposal of principle of control and regulation of speed for integrated brushless motor. The Diploma thesis contains both the description of used hardware components, and software solution implemented in assembly language. This device is already in commercial use.