正压型中压开关柜压力自动控制系统设计

Design of Pressure Automatic Control System for Positive Pressure Switch Cabinet

为了保证正压型开关柜内部压力稳定,提高开关柜的靠性和安全性,提出了一种正压型中压开关柜压力自动控制技术。在分析正压型开关柜组成结构、设计依据、主要分类和使用环境基础上,利用HM29压力传感器和RS485实现压力数据的采集和传输,基于单片机技术设计正压型中压开关柜压力自动控制系统硬件电路和软件流程,并详细设计传感器通讯接口电路和声光报警电路。

In order to guarantee the stability of pressure inside the positive pressure switch cabinet and improve the reliability and safety of the switch cabinet,an automatic control technology of pressure in the positive pressure switch cabinet was proposed.Based on the analysis of positive pressure type switchgear structure,design basis,main classification and use of the environment,on the basis of using HM29 pressure sensors and RS485 to realize data collection and transmission,based on single chip microcomputer technology design of positive pressure type medium voltage switchgear pressure automatic control system hardware circuit and software flow,and the detailed design and sound and light alarm circuit sensor communication interface circuit.