微型化大气电场检测仪的设计

针对目前电场检测仪体积大,成本高,操作复杂等问题,研制了一套微型化大气电场检测仪系统。该系统以电容作为传感器感知单元,两相四线步进电机作为传感器感知单元转动的载体,使用含内置A/D转换的STC12LE2052AD单片机进行数据采集,简化了电路的设计。无线蓝牙模块与数据采集系统相结合实现了实时显示的功能,最后将接收到的数据通过上位机显示出来。硬件部分设计了信号的放大滤波电路、A/D转换电路及数据采集与处理电路。利用MATLAB仿真,C语言编程,调试结果表明各项功能符合设计要求,并获得了误差小于4%的高精度测量结果。

Design of Miniaturized Atmospheric Electric Field Detector

For solve the problems of large volume, high cost, complex operation and other issues of the current electric field detectors, a miniaturization atmospheric electric field monitor system is developed. The system uses a capacitance as a sensor sensing unit, a two phase four wire stepper motor as a sensor detects unit, and STC12LE2052AD SCM (Single Chip Microcomputer) with a built in A/D converter to collect data; in this way, the circuit is simplified. Combining the Bluetooth module and the data acquisition system can realize the real time display function, and the data can be seen in the host computer. The hardware circuit includes the amplification filter circuit, A/D convert circuit, and data acquisition and processing circuit. By MATLAB simulation and C language programming, the experimental results show that the system can meet the requirements of actual measurements, with the measuring error less than 4%.