A Distributed Water Level Monitoring System for Urban Underground Drainage Pipelines

Abstract

The invention discloses a distributed water level monitoring system for urban underground drainage pipelines, which includes a light source, a coupler, an optical fiber with several grooves and an OTDR; the light source is used to emit light signals; the coupler is used to receive and transfer light signals; the optical fiber Fixed on the inside of the drainage pipe, the opening of the optical fiber groove is downward, and a water level sensor is installed in the groove, which is used to reflect the optical signal of the monitored position and realize the distributed measurement of the water level in the drainage pipe; OTDR is used to detect the light reflected by the water level sensor The signal forms a graph of the relationship between distance and light intensity. The light signal reflected by the water level sensor takes different time to form a peak on the reflection spectrum. The position of the peak is the location of the sensor, and the change of the reflection peak reflects the change of the water level at this position. . The invention uses a simple device to monitor the water level, is low in cost, and can be installed in large quantities; it has real-time performance and high accuracy in monitoring the water level of the drainage pipeline, and is convenient for urban municipal management.

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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