City underground drainage pipeline distributed water level monitoring system

A technology for underground drainage and water level monitoring, which is applied in measuring devices, liquid/fluid solid measurement, engine lubrication, etc. It can solve problems that affect the safety of citizens' lives and property, affect transportation, and water on roads, and facilitate urban municipal management. , high-accuracy effect

Active Publication Date: 2019-09-17
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • City underground drainage pipeline distributed water level monitoring system
  • City underground drainage pipeline distributed water level monitoring system
  • City underground drainage pipeline distributed water level monitoring system

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Embodiment Construction

[0020] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a distributed water level monitoring system for urban underground drainage pipelines of the present invention 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 transmit optical signals; the optical fiber is fixed on the inside of the drainage pipe, the opening of the optical fiber groove is downward, and a water level sensor is provided at the groove to reflect the optical signal at the monitored position and realize the distributed measurement of the water level in the drainage pipe ; The OTDR is used to detect the light signal reflected by the water level sensor and form a graph of the relationship between distance and light intensity. The time used by the light signal reflected by the wate...

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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...

Claims

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Application Information

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IPC IPC(8): G01F23/292
CPCG01F23/292
Inventor 魏峘张健赵静覃翠余辉龙何睿清
Owner NANJING INST OF TECH
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