Remote reservoir water level monitoring system

Abstract

The invention discloses a remote reservoir water level monitoring system which is composed of ultrasonic water level sensors, collecting front end machines, a telecommunication switch and a dispatching station telemetry terminal. The ultrasonic water level sensors and the collecting front end machines are arranged in a reservoir A, a reservoir B and a reservoir C respectively. The signal output end of each ultrasonic water level sensor is connected with the signal input end of a collecting front end machine. The signal output end of each collecting front end machine is connected with the telecommunication switch through a telephone line. The telecommunication switch is connected with the dispatching station telemetry terminal through a telephone line. A communication circuit is arranged between the collecting front end machines and the dispatching station telemetry terminal. The communication circuit comprises a ringing detection circuit, an analog off-hook circuit, a code decoding circuit, a voice prompt circuit, a CPU circuit and other circuits. Other circuits comprise a liquid crystal display driving circuit, a keyboard scanning circuit and a data acquisition circuit. The systemprovided by the invention adopts a PSTN communication mode, realizes safety and feasibility, and is unattended.

Description

technical field [0001] The invention belongs to the technical field of water regime monitoring information for water conservancy project irrigation, and in particular relates to a remote reservoir water level monitoring system. Background technique [0002] Reliable and accurate grasp of the water regime of the upstream reservoir is a prerequisite for the realization of water distribution scheduling and scientific management in the irrigation area. The water regime information is mainly completed manually, and human factors are greatly affected, so accurate and timely grasp cannot be achieved. Therefore, an irrigation district management bureau intends to remotely measure the water levels of the three upstream reservoirs. Since the reservoirs are located in mountainous areas, it is convenient to use wireless transmission, but the signal strength may be unstable, so the wired method is used. There are many types of wired methods, mainly including twisted pair wires (such as n...

AI Technical Summary

Problems solved by technology

There are many types of wired methods, mainly including twisted pair wires (such as network cables, telephone wires), coaxial cables, and optical fibers. The one-time investment of laying special cables is relatively high, and professional maintenance is required during operation.

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