基于ARM的改进型井下智能馈电开关保护器设计  

Design of Modified Intelligent Mine Feeder Switch Protector Based on ARM

作　　者：孟宇[1] 贾存良[1] 刘庆豪[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《煤炭技术》2016年第10期260-263,共4页Coal Technology

摘　　要：针对目前井下低压馈电开关保护器检测速度慢和电路结构复杂的问题,设计了基于ARM微处理器的改进型馈电开关保护器。该保护器采用高精度电量芯片ATT7022E取代模拟电路采集三相交流信号,以STM32作为控制核心,进行多任务调度。同时,应用MATLAB的cftool工具箱对保护回路绝缘阻值曲线进行多项式拟合,实现电网绝缘阻值数值化,提高了电网漏电故障检测的准确性。In view of problems of low detecting speed and and complex circuit design of feeder switch protector used in under mines, a reliable intelligent modified device based on ARM microchip was designed. The device read grid parameters by high precision chip ATT7022E to displace the analog circuit and realized multiple task management by STM32. Also digitize insulation resistance in the grid by fitting resistance value line with the help of cftool box in MATLAB. It improved the accuracy of leakage default detection.

关 键 词：馈电开关 漏电故障 ARM cftool工具箱 

分 类 号：TD611[矿业工程—矿山机电]