【摘要】 开发了用于地震前兆研究的地下水pH值、电导率和混浊度的智能在线监测仪器。介绍了仪器的软硬件设计,包括采集电路、前置放大电路、传感器及针对在线测量要求的长期稳定性和免维护性的设计,其中浊度传感器采用表面散射的原理设计,光源采用激光。仪器具有人机交互、数据存储、参数校准、串口通讯以及自动在线测量等功能,达到要求的各项指标,并在地震台站长期稳定运行。更多还原

【Abstract】 An intelligent meter that measures pH,conductivity and turbidity has been designed for earthquake prediction research.Gave the design mechanism of the pH,conductivity and turbidity meter, focuses on the data acquisition circuit,pre-amplifying circuit,turbidity sensor,features of long-term stability and maintenance-free.The design of turbidity sensor is based on the theory of surface scattering and uses laser as light source.The meter has functions of man-machine conversation,data storage,serial communication,the design of parameter calibration and on-line measurement.The main rating and specifications were achieved.The instrument has run stably at an earthquake station for 3 months.更多还原