The desing of testing system of engine running state Abstract:In the electrical system, the running of electrical engines has an immediate influence on the state of the load equipment. Therefore, it is important to monitor running of the engine, obtain the torque parameter accurately and control the engine whenever necessary with help of computers. This paper intends to design a torque testing system. Firstly, the background for the design is introduced and its significance is highlighted. Secondly, the technical standards and requirements for torque testing of the engine are proposed, including the data value acquisition of 8-digit analog circuit by A/D converting circuit as well as serial communication. Finally, this paper discusses the circuit design of principle prototype, communication and anti-interference techniques between microcontroller and host computer by means of RS232, the microcontroller programming and interference-free as well as the testing of the overall system. The acquired data are processed by the monitoring system of computer through RS232. This paper employs Visual Basic to develop the monitoring and testing system in order to process the acquired data. So the monitoring and testing system will focus on the following three problems: (1) the communication with the microcontroller acquisition system; (2) the processing of the acquired data; (3) the operation and display of the acquired data. This paper also introduces the advantages of VB, presents the controlling program interface and discusses the communicational protocols for the microcontroller assembly program. Key words: engine torque serial communication ......
以上为本篇毕业论文范文 电动机运行状态检测系统的设计的介绍部分。