Conductivity analyzer system and control method thereof

Abstract

The invention discloses a conductivity analyzer system. The system is characterized by comprising a controller module, a conductivity electrode, a conductivity signal processing module, a temperature acquisition module, a power module, an RS 485 communication module and an RS 232 communication module, wherein the conductivity signal processing module consists of an ICL 8038 square-wave generator, an OPA 2704 operational amplifier feedback circuit and an AD637 true virtual value circuit; the control method of the conductivity analyzer system is characterized in that the working process of the controller module (1) comprises an initialization subprogram, an A/D conversion sampling subprogram, a control algorithm subprogram, a controlled quantity output subprogram and a communication interface subprogram. The conductivity analyzer system overcomes the defect of slow data transmission speed in the past, selects an STM32F103 series microprocessor produced by STMicroelectronics NV for use, and is capable carrying out 32-bit data serial processing, thus accelerating the speed of data processing and guaranteeing real-time transmission of data; therefore, the conductivity analyzer system has higher stability and measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of conductivity analysis, in particular to a conductivity analyzer system and a control method thereof. Background technique [0002] Secondary water supply is the "last mile" of water supply for high-level users. Due to unclear management entities and even unmanned management, it is difficult for many management units to ensure regular cleaning and disinfection of secondary water supply facilities. In addition, due to the characteristics of the secondary water supply facilities, such as facility materials, water storage time, external environmental conditions and human influence, secondary pollution is easily generated, which affects the drinking water safety of water users within the water supply range. [0003] There are many ways to measure the conductivity of a solution. From the point of view of the excitation signal applied to the conductivity sensor, it includes two categories: DC excitation signal ...

AI Technical Summary

Problems solved by technology

[0002] Secondary water supply is the "last mile" of water supply for high-level users. Due to unclear management entities and even unmanned management, it is difficult for many management units to ensure regular cleaning and disinfection of secondary water supply facilities.

In addition, due to the characteristics of the secondary water supply facilities themselves, such as the material of the facilities, the storage time of water, external environmental conditions and human influence, secondary pollution is easily generated, which affects the drinking water safety of water users within the water supply range.

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