关键词:LED显示器;AT89C51;温度检测;柴油发动机
Abstract
This thesis gives detailed intelligent introduction to the research of intelligent integrated experiment station of diesel engine, including working principles, performance features, the design of system hardware and software etc. This system uses micro electronic technology and single chip interface technology, AT89C51 MCU as the core, realizing fast and accurate test the performance of the engine. It has many features like easy setup, time and work saving, highly automated, fast test and accurate testing data.
Testing system is mainly made up of two parts. The hardware part includes the choose of sensor, power circuit and MCU control circuit, etc. The choose of sensor take the most of DA displacement sensor’s characteristics, reduces temperature influence, increases flexibility. By using SZGB-6 sensor’s IR sending and receive tube, reduces influence of natural light, increases the precision. By WREK testing temperature, realizes accurate test of displacement, speed, temperature of water and oil and the control of the speed. The MCU control part includes: AT89C51, clock and reset circuit, ADC interface with MCU, LED interface and 4×4 simple keyboard interface.
This system is based on basic language of assembler in software design, the speed of instruction is fast, saves memory space. For the convenience of extend and change, module structure is adopted in software design which makes the logic relationship more concise and makes hardware run smoothly under software’s control.