摘要
多点测温系统在工业领域及养殖业领域均有广泛的用途。以往的测温系统多采用热敏电阻,精度低、易损坏,且模拟信号远距离温度测量在技术上实现比较复杂,因此提出了采用新型数字温度传感器DS18B20。它具有体积更小、精度更高、采用一线总线、可组网等优点。设计以单片机AT89C51为控制核心,结合RS485芯片完成多点测温并传送数据到主机显示,便于主机监控现场,并对现场情况采取及时处理。采用Keilc软件编译后通过Proteus7.5仿真,达到预期效果。
The multi-point temperature measurement system has wide application in the fields of industry and aquaculture. The previous temperature measurement system usually used thermal resistance, and had low precision, easy to damage, the analog signals remote temperature measurement was more complicated in technical. Therefore, a new type digital temperature sensor DS18B20 is proposed. It has smaller size, higher precision, uses first-line bus and has the advantages of networking. The design takes AT89C51 microcontroller as control kernal, the multi-point temperature measurement is completed combining with RS485 and the data is sent to the host display, it is easy to monitor the host site and dispose the situation timely. The design achieves the desired results by using the keilc software compilation and proteusT. 5 simulation.
出处
《现代电子技术》
2010年第12期23-25,共3页
Modern Electronics Technique
