1、 PDF外文：http:/ 南昌航空大学信息工程学院 毕业设计英语文献翻译 摘自 http:/www.scirp.org/journal/PaperInformation.aspx?PaperID=22046 专 业 自动化 班 级 090441 学 号 &
2、nbsp; 09044137 姓 名 龚 亮 指导老师 李军华 日 期 2013 年 3 月 15 日 1 Design and Implemen
3、tation of Electronic Control Trainer with PIC Microcontroller Yousif I. Al Mashhadany Electrical Engineering Department, Engineering College, University of Anbar, Baghdad, Iraq Email: yousif_ Received April 26, 2012； revised May 23, 2012； accepted May 30, 2012 ABSTRACT This p
4、aper describes the implementation of a PIC microcontroller in a conventional laboratory-type electronic trainer. The work comprises software for the PIC and hardware for the software. The PIC controller uses an EasyPIC-6 board and includes a PC-interfaced programmer for the PIC chip. It has many ext
5、ernal modules: 128 64 graphic LCD dis- play, 2 16 LCD display, 4 4 keypad, and port expander, all in the same bench. The trainer is capable of 36 experiments in logic/analogue electronic and control systems. A 5-sided approximate sensor, two photoelectric sensors (BR56-DDT-P
6、and BEN9M-TFR),four CMOS,four BCD-7-segment driven by CD4511B, two relays (2-pole and 3-pole), six voltages, ammeter measurement, DC motor, and 24VDC power supply, connect through connectors and pinions. Results of all the experiments show the trainer satisfying requirements of undergrad
7、uate and postgraduate pro- jects involving conventional electronic and classical control systems. Keywords: PIC Microcontroller； Photoelectric Sensor； Conventional Electronic Trainer 1. Introduction Modern microcontroller chips can store hundreds of thou- sands of tra
8、nsistors each. The first microprocessors had external peripherals such as memory, input-output lines, and timers (Matic, 2003). In time came a new device called integrated circuit (IC), which contains both processor and peripherals. Also called a microcontroller, this was the first chip
9、with a microcomputer 1,2. Peripheral Interface Controller (PIC) is new to electronics control. Providing complete control in a single chip, a PIC microcontroller has special function registers, power on reset, interrupts, user RAM for storing of program data, EPROM program memory,
10、 timer circuits, instruction set, low power consumption, and on-board A- to-D converters. It replaces conventional control of in- dustrial machinery (e.g., motor-speed control) 2,3. Microcontroller and microprocessor differ in many ways. In functionality, a microprocessor &n
11、bsp;needs external components for receiving/sending data, and memory. A microcontroller does not need external components be- cause all the necessary peripherals are built-in, saving time and space (see Figure 1 for microcontroller set 4- 7). The EasyPIC-6 by MikroElektronika (see
12、 Figure 2) is an extraordinary development tool for programming and experimenting with PIC microcontrollers. It supports over 160 MCUs in PIC10, PIC12, PIC16, and PIC18 families, in DIP packages from 8 to 40 pins. The board comes installed with PIC16F887. An impressive array of peripherals and
13、 expansion connectors are available on- board, as are optional LCD displays and temperature sensor 8,9. 2 An on-board programmer and mikroICD debugger allow direct connection to PC via USB cable. Fully functional demo versions of MikroElektronikas C, Pascal, and BASIC compi
14、lers are included (hex output limited to 2K program words), complete with documentation and dozens of sample programs. The EasyPIC-6 also includes an external ICD connector compatibl with MPLAB ICD2 and ICD3, allowing full compatibility with MPL- AB Integrated Development Environment (IDE) 10,
15、11. Its main problem is lack of facility for external experiments to be implemented in many undergraduate laboratory applications； it is also daunting to beginner designers. This paper presents a practical implementation of EasyPIC-6-based electronic control trainer able to execute about 36 experiments, and rearrangement of the EasyPIC-6 power supply to extend the trainer s capability to AC-DC-current applications. Figure 1. Microcontroller set 7.
