离线式超低功耗压力数据采集系统

Off-line ultra-low power consumption pressure data acquisition system

针对建筑环境和市政工程领域的压力测量周期长、作用半径大、现场无电源等特点,提出一套离线式超低功耗压力数据采集系统,由超低功耗的压力数据采集仪、掌上电脑和PC机组成。系统硬件采用超低功耗的方法进行设计,选择超低功耗的器件,电源采用按需供给的管理方式。实测压力数据采集仪平均工作电流为379μA,12Ah的锂电池供电可连续工作3.6a;开发了掌上电脑及上位机软件,掌上电脑可与采集仪通讯,实现离线采集数据和数据处理。应用此离线式系统采集压力数据可节省大量的人力、物力。

For acquisition of pressure data often needed for HAVC and municipal engineering, a set of off-line and ultra-low power consumption pressure data acquisition system is proposed, which consists of pressure data instruments, palmtop computer and PC. The ultra-low power consumption principle is followed in hardware designing and the average current in the system is 379 uA and it can continuously work for 3. 6 years. The programs of palmtop computer and PC are developed to collect and analyse data.