工矿自动化2012，Vol.38Issue(10)：70-72,3.
基于PIC单片机的本质安全型电流—频率转换电路设计
Design of Intrinsic Safety Current-frequency Conversion Circuit Based on PIC Single-chip Microcomputer
赵光绪1
作者信息
- 1. 中煤科工集团重庆研究院,重庆400039
- 折叠
摘要
Abstract
In view of problem of diversity existed in signal output forms of analog sensor, an intrinsic safety current-frequency conversion circuit based on PIC single-chip microcomputer was designed. The circuit uses intrinsic safety power supply, and converts analog current signal into voltage signal through grounded sampling resistance with high precision and the signal is sent to A/D sampling interface of PIC single-chip microcomputer, then the signal is converted into frequency signal after processed by software. The actual application shows that the circuit can meet with requirements of various current type sensors accessed in coal mine safety monitoring and control system.关键词
煤矿/安全监控/电流型传感器/本质安全型/电流—频率转换/PIC单片机Key words
coal mine/safety monitoring and control/current type sensor/intrinsic safety/current-frequency conversion/PIC single-chip microcomputer分类
矿业与冶金引用本文复制引用
赵光绪..基于PIC单片机的本质安全型电流—频率转换电路设计[J].工矿自动化,2012,38(10):70-72,3.
