The upper computer includes human-computer interaction module, data processing module and hardware interface module. The upper computer through RS-232 serial port connected with the lower computer , the next bit machine test data uploaded to the host computer for data processing, and will handle the data output for the.TXT file.The upper computer application to facilitate the use and daily maintenance.
The lower computer mainly includes the STM32F107 micro controller system, the conductive resistance relay matrix board, the insulation resistance relay matrix board, the switching plug, the power circuit board and the signal conversion system.The STM32F107 microcontroller system is composed of I/O expansion circuit board, control circuit board, sampling circuit board, isolation amplifier circuit and STM32F107VCT6 micro controller.STM32F107 microcontroller through the control of the relay on the ranks of the potential changes in the control relay off, to select the guide resistance relay matrix and insulation resistance relay matrix of different test points.The lower machine is used to improve the test speed.
This paper mainly introduces the hardware and software of the intelligent test device of insulation resistance.It has the characteristics of fast, flexible and convenient to design the insulation resistance intelligent test device, which has a high degree of automation, which greatly reduces the error caused by human factors to the test.It can regulate the output of different test voltage, in order to adapt to different models and the number of core requirements of different measuring voltage of the cable.
Keywords insulation resistance,Tester,upper computer,lower computer
目 次
1 绪论 1
1.1 课题研究的意义1
1.2 研究现状分析1
1.3 研究的主要内容3
2 系统的总体设计 4
2.1 硬件及软件设计 5
2.2 工作电路 6
3 详细的硬件设计 10
3.1 测试箱的组成 10
3.2 线缆检测装置电器接口11
3.3 电源电路16
3.4 继电器矩阵17
3.5 导通测试电路20
3.6 控制电路21
3.7 驱动电路22
3.8 本章小结24
4 软件系统设计25
4.1 软件总体设计25
4.2 下位机功能软件26
4.3 上位机测试软件31
4.4 上位机测试软件32
5 系统调试与日常维护33
5.1 系统误差分析33
5.2 日常维护34
结论 35
致谢 36
参考文献37
附录A 导通、绝缘电阻检测箱底板引出线插头定义38
1 绪论
1.1 课题研究的意义
随着自动化水平的提高，自动化控制部件在一些设备中占据越来越重要的位置。电器之间的数据传输和电源能量的供给都是靠着各种各样的电缆实现。多芯电缆常用于短距离内电的输送和控制信号的传输[1]。由于（温度 湿度 电磁环境等）外界各种因素的影响，电缆以及电器控制部件的绝缘性能会随着时间推移不可避免降低，从而导致发生故障；在移动铺设电缆时，使用过程中也会发生故障。统计研究发现，上述领域中有超过20%的系统及机器故障是由于电缆的问题引起的[2]。所以电缆故障是影响整个系统可靠性的一个不可忽视的重要原因。
在军事中现代战争，武器系统需要在各种恶劣的环境下进行工作，在高盐度、高湿度、复杂电磁环境等环境下由电缆绝缘性能和导通性能引发故障的几率大大增加。
导通电阻反映的是电路中两点之间的通断关系，绝缘电阻表示出电路中独立构件之间的绝缘程度。其数值的量程是否合格直接影响武器系统控制系统的可靠性和使用寿命。准确快速的测量出导通电阻和绝缘电阻对于武器系统的可靠性和快速打击能力的提升有很大的作用。 STM32F107绝缘电阻智能检测装置设计(2):http://www.751com.cn/zidonghua/lunwen_44064.html