基于单片机的汽车门窗玻璃升降控制硬件平台搭建.doc
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- 关 键 词:
- 基于 单片机 汽车 门窗 玻璃 升降 控制 硬件 平台 搭建
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1、摘 要本课题是设计一款基于PIC单片机的汽车玻璃窗升降控制器,里面包括:电源模块、信号输入模块、驱动控制模块以及测量模块。为了提高改进东风柳州汽车有限公司现有的玻璃窗升降控制器,我通过对公司现有的商用车门窗玻璃升降器的分析,发现原有产品主要的工作原理是由两边各4个MOS管组成两路H桥电路来驱动控制电机,以实现对窗玻璃升降的控制。但是这个方案有所欠缺,根据返修回来的电路板来看主要有两个点:一是H桥电路失效,造成对电机的失控;二是电路中电源的干扰,车载发电机抛负载产生的反向电流冲击以及瞬时高压。为了解决这些问题,我根据原有的电路设计出了一个继电器联合MOS管驱动控制电机的电路,这样的话有效的防止了
2、H桥失效的情况,对电源电路的改进也防止了反向电流的冲击。根据国家的要求这里我利用康铜电阻设计了防夹和防堵转的电路,以实现对驾驶人员和汽车的保护,同时设计的时候还要考虑到汽车所在的环境,不管是在多尘寒冷的北方还是在多雨温热的南方,除此之外还需要考虑到汽车内部的电磁干扰。这里的设计主要是提高产品的可靠性,以及考虑对使用成本的控制。经过测试继电器联合MOS管的电路能够取代原有的产品,但是仍有不足之处,我正在对这个方案进行完善。关键词:PIC单片机;电源模块;继电器;MOS管;康铜丝;MAPLAB-IDE;PICkit3;回流二极管。AbstractAs long as this project is
3、 to design a PIC microcontroller-based automotive glass elevator controller, which includes: power supply module, the signal input module, the drive control module and measuring module. In order to improve the existing glazing elevator controller of Dongfeng Liuzhou Motor Company, I passed on analys
4、is the companys existing commercial vehicle window glass lifter, we found the original product key works by both sides of the four MOS tubes two H-bridge circuit to drive and control the motor, in order to achieve the control of windows down. However, this program has been lacking, according to the
5、back of the circuit board rework view there are two main points: First, H-bridge circuit failure, resulting in loss of control of the motor; Second, the interference of the power circuit, the motor load dump is generated by reverse current impact. To solve these problems, in accordance with the orig
6、inal design of the circuit of a relay joint MOS transistor to control the motor drive circuit, in this case to effectively prevent the H-bridge failure situation, improvement of the power supply circuit also prevents reverse current impact. Here I am in accordance with national requirements designed
7、 to take advantage of constantan resistance and attempts to prevent the transfer of anti-trap circuit, in order to achieve the protection of the driver and the car, but also take into account when designing the car where the environment is dusty cold North or south in the warm and rainy, in addition
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