City underground drainage pipeline distributed water level monitoring system

Abstract

The invention discloses a city underground drainage pipeline distributed water level monitoring system. The system comprises a light source, a coupler, an optical fiber with several grooves, and a OTDR; the light source is used for emitting an optical signal; the coupler is used for receiving and forwarding the optical signal; the optical fiber is fixed at an inner side of the water drainage pipeline, an opening of the groove of the optical fiber is downward, a water level sensor is arranged at the groove and used for reflecting the optical signal of a monitored position, and thus, distributed measurement of water level in the drainage pipeline is realized; the OTDR is used for detecting the optical signal reflected by the water level sensor and forming a graph of relation between distance and light intensity, time used for the optical signal reflected by the water level sensor is different and forms a peak value on a reflectance spectrum, the position of the peak value is location of the sensor, change of the peak value of a reflection peak reflects change situations of the water level at such location. The system provided by the invention completes monitoring of the water level through simple devices, cost is low, and the devices can be mounted in large amount; and the system has real-time property and relatively higher accuracy in monitoring of the water level of the drainage pipeline, and is convenient for city municipal administration.

Description

technical field [0001] The invention belongs to the technical field of urban underground water level monitoring, and in particular relates to a distributed water level monitoring system for urban underground drainage pipelines. Background technique [0002] Urban underground drainage pipes have serious problems of poor drainage as soon as the spring and summer rainy seasons arrive. In recent years, there have been occasional floods on the roads caused by unexpected heavy rains, which have affected daily traffic and transportation at least, and affected the life and property safety of the general public. Although solving the problem of water overflow in urban sewer pipes during heavy rain is a systematic project involving many departments, if we can know the water level of underground pipes in time, we can dispatch flood drainage personnel in time to clear the water accumulation in specific waterlogging points and avoid major accidents. occur. [0003] Urban underground dra...

AI Technical Summary

Problems solved by technology

In recent years, there have been occasional floods on roads caused by unexpected heavy rains, which have affected daily traffic and transportation at least, and affected the life and property safety of the general public.

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