基于无线网桥的水下光合有效辐射远程测试系统

Remote data acquisition system for water photosynthetically available radiation based on wireless bridge

基于LabVIEW虚拟仪器软件平台开发了远程测试系统,应用于光合有效辐射等水下参数的数据采集和测试现场的远程监测。系统采用低成本无线网桥,可实现3-5 km的稳定数据传输,16位A/D多通道数据采集,采样频率最高250 kHz,同时控制步进电机的转速和方向,实现传感器在水下的升降。实际测试表明,系统具有成本低、可靠性高、安全性好的特点,为水下参数的远程数据采集和传输提出了一种实用方法。

A new remote data acquisition（ DAQ） system for underwater photosynthetically available radiation measurement and remote monitor is described in this paper. The system was developed with Lab VIEW platform. The high definition EM- 9636 BD DAQ card was used to collect multiple water parameters with acquisition rate up to 250 k Hz and control the sensors ′ vertical speed with a step motor, simultaneously. The system adopted a pair of wireless bridge with low price which can transmit data to the computer monitor 3 to 5 km away. The test results show the system has a high reliability and good safety performance.