Multiple-parameter water quality monitoring node device based on WSN

Abstract

The invention provides a multiple-parameter water quality monitoring node device based on WSN. The multiple-parameter water quality monitoring node device comprises a sensing unit, a core control unit and a power supply module, wherein the power supply module is used for supplying electricity; the sensing unit comprises a signal processing circuit and more than two water quality sensors which are connected with the signal processing circuit; the signal processing circuit comprises a square wave generation circuit, an I/V conversion circuit, a precise rectifying and filtering circuit, a PT100 signal processing circuit and/or a voltage enhancement amplification circuit; the sensors of the sensing unit are connected with the core control unit through the signal processing circuit; the core control unit is respectively connected with a GPA module and a ZigBee module bidirectionally; and the power supply module is connected with the sensing unit, the core control unit and the ZigBee module. The multiple-parameter water quality monitoring node device provided by the invention is simple in integral hardware circuit and low in cost and can be used for simultaneously monitoring multiple water quality parameters.

Description

technical field [0001] The invention relates to a WSN-based multi-parameter water quality monitoring node device, which belongs to the field of water quality monitoring and detection. Background technique [0002] In recent years, many important methods have emerged at home and abroad in terms of monitoring and protecting water resources. Wireless sensor network (WSN) integrates computer technology, communication technology and sensor technology. It has the advantages of wide monitoring range, low system cost, high reliability, self-organization of monitoring nodes and little damage to the ecological environment. It is very suitable for large-scale water areas in the wild. Water quality monitoring. [0003] Many scientific research institutions have begun to conduct small-scale networking experiments in inland freshwater lakes or offshore marine environments. Universities and scientific research institutions such as the Chinese Academy of Sciences, Ocean University of China...

AI Technical Summary

Problems solved by technology

[0004] Existing water quality detection node devices can usually only detect one type of parameter

However, if you want to detect multiple parameters at the same time, you need to use multiple types of sensors. The simultaneous access of multiple sensors is limited by many factors, such as the processing capacity of the control unit, the transmission mode of sensor signals, and the relationship between the sensor and the control unit. At the same time, the input of different electrical devices is different, which is also a big difficulty for the selection of power supply

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