基于AT89C51的土壤温湿度数据采集与调节系统设计

Data Acquisition and Conditioning System of Soil Temperature and Humidity Base on AT89C51

土壤温湿度数据采集与调节系统,通常采用单片机8031和数字温度、湿度传感器来实现,,整个系统虽然成本低,但体积大、通讯距离受限,本文介绍一种以AT89C51为核心的数据采集与调节系统,其传感器选用AD590和湿敏电容进行温湿度测量,它们精度高、线形优良,并使整个系统体积大大减小,其内部总线采用的是CAN总线的形式,大大增强了系统的通讯能力,具有很高的性价比和通用性好。

A kind of temperature and humidity data acquisition and conditioning system are introduced based on AT8951. The senor AD590 is selectted and wet sensitive electric capacity is used for measuring emperature and humidity data. Transmitting capicity had improved because it used CAN bus. The low cost system could provide high accuracy and working stability.