Ultralow-power-consumption pH signal conditioning transmission circuit and real-time water quality monitoring system

Abstract

The invention discloses an ultralow-power-consumption pH signal conditioning transmission circuit and a real-time water quality monitoring system. The monitoring system comprises a pH sensor, a smalllightweight portable box, a lithium iron phosphate battery box, the pH signal conditioning transmission circuit, a single chip microcomputer, a data receiving module, an analog-digital conversion module and a data transmission module is arranged in the portable box. Under 3V power supply of a single power supply, power consumption of the pH signal conditioning transmission circuit can reach an ultralow state of 130mu A or less; furthermore, -414mV(ph=14) to +414mV(pH=0) weak water quality parameter signals monitored by the pH sensor can be correspondingly amplified to 1.4V to 0V, so that the real-time water quality monitoring system can reach ultralow power consumption, can be conveniently installed at different detection sites especially in inspection wells without achieving power supply,can be applied to monitoring whether sewage and wastewater meet a discharge standard and can report the abnormal water quality situations in time; thus, the problem that real-time collection cannot be achieved mutually in real life and the problem of long-time power supply of the system are solved, manpower resources are saved, and cost is reduced.

Description

Technical field [0001] The invention belongs to the field of environmental monitoring equipment, and particularly relates to a real-time monitoring system for water quality with extremely low power consumption for monitoring whether sewage and wastewater meet discharge standards and a pH signal conditioning and transmitting circuit therein. Background technique [0002] Water pollution has the characteristics of complex, diverse and diverse physical and chemical components. It is not only affected by the size and quantity of pollution sources, but also by floods and rainfall during the flood season. Due to the comprehensive results caused by multiple factors, the changes of water quality parameters in composition and time and space are very complicated. [0003] The traditional manual on-site water sample collection and testing methods are too long to reflect the nature and process of water quality changes in a timely and accurate manner. Therefore, the development, utilization and...

AI Technical Summary

Problems solved by technology

It is also more troublesome to query the monitoring data information. The staff can only view the real-time monitoring data displayed on the central control computer of the system, and it needs to be recorded manually, which brings a lot of trouble to the future data information query.

Due to long working hours and excessive manpower consumption, its real-time performance is also quite limited

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