Underground net pipeline test system based on big dipper positioning

Abstract

The invention relates to the technical field of underground pipeline measurement, and discloses an underground net pipeline test system based on big dipper positioning. The system comprises N annular strain films arranged on the outer surface of a pipeline in a pasted manner, and waterproof films arranged on the outer surfaces of the annular strain films, wherein N is greater than or equal to 2; each annular strain film is clung to a circumferential annular outer wall of the pipeline; insulation films are arranged between every two adjacent annular strain films; the system further comprises rectifying circuits, filter circuits, A / D conversion circuits, master control circuits and big dipper positioning modules; and every n annular strain films are mutually connected in series or in parallel by lead wires to form a strain film group; n is greater than or equal to 1 and less than or equal to N; the strain film groups are electrically connected with the rectifying circuits, the filter circuits, the A / D conversion circuits and the master control circuits sequentially; the big dipper positioning modules are electrically connected with the master control circuits, and are in communication with a backend database and a monitoring center by a wireless communication network. According to the system, an equivalent circuit is designed, and the position of a fault point is detected accordingly.

Description

technical field [0001] The invention relates to the technical field of underground pipeline measurement, in particular to a Beidou positioning-based ground network pipeline testing system. Background technique [0002] With the development of urban construction, the scale and types of underground pipelines are increasing rapidly. Underground pipelines include cables, heating pipelines, water supply pipelines, gas pipelines, etc. Because they are buried in the ground, they cannot be located immediately once they are ruptured, which brings inconvenience to the maintenance of managers. Even if it cannot be located immediately, it will cause more serious danger, resulting in the loss of personnel and property. Underground pipelines live in the dark and dark underground. Even if leakage occurs, most of them are sensed according to the sensor's measurement of the amount of leaking objects. For cost considerations, the sensors are set at a certain distance and cannot be spread thr...

AI Technical Summary

Problems solved by technology

Underground pipelines include cables, heating pipes, water supply pipes, gas pipes, etc. Since they are buried underground, once a rupture occurs, they cannot be located immediately, which brings inconvenience to the maintenance of the management personnel.

What's more, it can cause more serious danger after being unable to locate immediately, resulting in the loss of personnel and property

Underground pipelines live in the dark and dark underground for a long time. Even if a leak occurs, it is mostly sensed based on the sensor measuring the amount of the leaking object. In consideration of cost, the sensors are set at a certain distance and cannot be spread throughout the pipeline. The sensing speed and sensing effect are greatly reduced, and some small cracks on the pipeline cannot be sensed even if they need to be sensed after a leak occurs, and often small cracks are easy to repair, and once a leak occurs, then It is very likely to cause heavy loss of property, or even casualty

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