摘要纺织机械长期连续运行，其电机在充满了纤维材料的恶劣环境下下工作，造成电机始终处于持续高温高湿的状态下运转，很容易造成过热、火灾、短路等事故，此外，电网电压的不稳定和电机短路也会造成电机的损坏。目前市面上尚无一套功能齐全且价格便宜的纺织电机保护系统，针对这一情况本文设计了用于纺织机械的电机保护系统。87248
本文通过分析了纺织电机在运行中常见的不利条件：如电机短路、低电压、过电压、工作温度过高、工作环境过于潮湿等，制定了有针对性的保护策略，提出了以STC90C51RD+单片机为处理器的纺织机械电机保护系统方案，并进行了实验验证。该系统具有自检、自诊断、故障参数记忆等功能。
该系统可以在第一时间判断并处理因电机而引起的问题，有效的防止了事故的发生。系统含数据收集模块、数据处理模块、故障检测模块、故障处理模块及人机交互模块五个模块。系统外围电路简单，操作容易，成本价格便宜，数据显示简洁直观，而且能够自行检测故障并处理故障，能够实现纺织电机智能保护，更重要的是此系统能适用于各种型号的纺织电机。
毕业论文关键词：纺织机械，智能保护，STC90C51RD+

Abstract Textile Machinery long-term continuous operation, the motor is working at full fibrous material in the harsh environment, causing the motor remains under the continuous high temperature and high humidity state of operation, it is likely to cause overheating, fire, short circuit, in addition, the grid voltage is not stability and electrical short-circuit can cause damage to the motor。 Currently on the market there is no set of functional and inexpensive textile motor protection system for this situation paper designed for textile machinery motor protection system。
Through analysis of the textile in the operation of the motor common adverse conditions: such as electrical short circuit, low voltage, over voltage, high temperature, the working environment is too wet, etc。, to develop a targeted protection strategies proposed to STC90C51RD + microcontroller textile Machinery motor protection system program the processor and verified by experiments。 The system has a self-test, self-diagnosis, fault parameters memory and other functions。
The system can determine and deal with problems caused by the motor for the first time, effectively prevent the occurrence of accidents。 Systems with data collection module, data processing module, fault detection module, fault processing module and human-computer interaction module five modules。 System peripheral circuit is simple, easy to operate, cheap cost price, the data show simple and intuitive, and can detect the fault yourself and deal with failure, enabling textile intelligent motor protection, more importantly, this system can be applied to various types of textile motor。
Key words: Textile Machinery, intelligent protection, STC90C51RD+

目  录


第一章  绪论   1
1。1 选题背景   1
1。2 纺织机械电机保护的国内外现状   1
1。3 存在问题   2
1。4 保护电机的意义   2
1。5 本课题的研究目标和内容   2
1。5。1 研究目标   2
1。5。2 研究内容   3
第二章  总体方案设计   4
2。1 电机工作环境分析   4
2。2 硬件方案设计   4
2。3 软件方案设计   5
2。4 本章小结   7
第三章  保护电路的硬件设计   8
3。1 芯片介绍   8
3。2 电流电压保护电路   8
3。2。1 电流采集元器件的选择   8
3。2。2 电流互感器工作原理   9 STC90C51RD+单片机的纺织机械电机保护系统设计+电路图+程序:http://www.youerw.com/zidonghua/lunwen_130815.html