基于PSTN网的单总线分布式温湿度采集系统的设计

Design of 1-wire Bus Distributed Temperature and Humidity Acquisition System Based on PSTN

介绍了一种以PSTN网作为传输线路,采用拨号方式实现数据通讯的远程分布式温湿度采集装置,现场采集装置以单片机为核心,利用集成湿度传感器和单总线器件,设计出了一种完全符合单总线规范的温湿度传感器,并通过嵌入式eModem接入PSTN网,整个系统集通讯技术、控制技术、计算机技术为一体,实现了温湿度控制系统的远程、分布式测量与控制,具有良好性能价格比和应用价值。

a kind of remote distributed temperature and humidity acquisition system is introduced. With the help of information carrier of PSTN and by dialing number, the data communication is realized. Using relative humidity sensor and cooperating 1-wire bus chip on the basis of MCU, we design a kind of temperature and humidity sensor according to 1 wire bus criterion completely, which linked into PSTN by embedded Modem. The remote distributed temperature and humidity acquisition system is realized by using the advanced tech niques of communication, control and computer. The system has higher performance-price ratio and application value.