小电流接地选线装置中数据采集卡的设计

Data acquisition card design for fault line selection device in small current neutral grounding system

小电流接地选线装置的设计分为数据采集卡(从机)和故障线路判别器(主机)两部分。主机和从机在安装上各自独立,通过GPRS短信模块进行通信。重点介绍了基于C8051F040的数据采集卡的软、硬件设计及其工作原理。指出本装置在原始信号连接方式上的改进,可以使线路的连接变得简单易行,母线段数、出线条数不受限制,普适性好。

Fault line selection device in small current grounding power system consist of data acquisition card （master） and fault line discriminator （slave）. Master and slave devices were installed independently and communicate with each other through GPRS message module. Details about the principles as well as the hardware and software design of C8051F040 based data acquisition card were presented. The device＇ s original signal connect mode was improved to make easy the circuitry connection, as a result, the numbers of bus lines and output lines were not limited.