离子电位计的设计与应用

Design and application of ion potentiometer

为实现矿井突水水源快速识别和水灾预测预报,设计了一种水质分析用离子电位计。该离子电位计采用离子选择电极将水样中对应的离子质量浓度转换为电压信号,信号转换电路对离子选择电极测量电压进行放大,24位高精度AD转换器将该电压转换为数字量,最后采用TFT液晶屏显示离子种类以及离子质量浓度等相关信息。该离子电位计具有离子质量浓度测量准确、使用方便等优点。

In order to achieve quick identification of mine water bursting source and flood forecasting,an ion potentiometer used for water quality analysis was designed. The ion potentiometer uses ion selective electrode to transfer corresponding ion in water sample to voltage, and the voltage is amplified by signal conversion circuit and converted to digital value by 24 bit high-precision AD converter. Finally the ion potentiometer uses TFT LCD screen to display ion species, ion concentration and other related information, and it has high measurement accuracy of ion content and is easy to use.