摘要
本文介绍一种基于AT89C52单片机的智能多路温度控制器。该控制器采用高精度的铂电阻传感器、专门的A/D转换电路及输出电路来实现对4路温度的同时自动检测及线性化处理,采用交流侧抗干扰技术进行去噪,其误差小于±0.5℃;并通过RS485总线标准实现远程通信;且用户通过人机接口控制变压器冷却风机启、停,设定报警及跳闸阀值。软件使用模块化结构,并对温度进行分段线性化处理。
This paper introduces a temperature controller based on AT89C52. This controller adopt platinum resistance sensor, special A/D converter and output circuit to automatic monitor four tunnels＇ temperature simultaneously and linearization process; and with the error of measurement less that ＋0.5℃. The long-distance communication in this design use RS485. Users can operate on-off of the cooling fan on dry-type transformer, and set warning and trip threshold through human machine interface. The software is modularization, and make temperature subsection to linearization process.
出处
《微计算机信息》
北大核心
2007年第20期83-84,62,共3页
Control & Automation
基金
河北省科技厅基金项目(012134100)
