中文摘要：

场磨式电场测量系统广泛应用在雷电预警、环境质量监控等领域,但存在测量精度低、电路结构复杂、维护不方便等缺点。针对这些问题,采用FPGA设计了基于差分式结构的数字式电场测量系统,通过对电场仪探头结构、信号处理电路等方面的改进,消除了测量过程中产生的共模干扰同时简化了电路结构,制作了实验原理样机并进行了实验室标定和外场测试。测试结果表明,该系统比传统场磨式电场测量系统具有更高的测量精度,能完全满足电场测量的需要。

英文摘要：

Field mill type electric field measurement system was widely used in lightning warning, environmental quality monitoring and other areas, but there were low-precision measurement, complex circuit structure, unconvenient maintenance and other shortcomings. To solve these problems, a digital field measurement system with differential measurement structure was designed based on FPGA （Field Programmable Gate Array）. By optimizing probe electric field instrument configuration and signal processing circuit, common mode interference measurements generated in the process were solved while simplifying the circuit configuration. The experiment produced a prototype and laboratory calibration and field testing. The test results show that the system than the traditional measuring system has higher accuracy, can fully meet the needs of field measurements.