An intelligent manhole cover monitor based on ultrasonic detection technology

Abstract

The invention relates to an intelligent manhole cover monitor based on ultrasonic detection technology. The intelligent manhole cover monitor comprises a box body, a main control unit, an ultrasonic sensor, a three-axis acceleration sensor, a battery and a bellmouth device. The main control unit, the ultrasonic sensor, the three-axis acceleration sensor and the battery are fixed in the box body, and the bellmouth device is arranged on a lower cover of the box body. An A output end of the ultrasonic sensor is connected with an A input end of the main control unit; an A output end of the main control unit is connected with an A input end of the ultrasonic sensor; an output end of the three-axis acceleration sensor is connected with a B input end of the main con troll unit; a B output end ofthe ultrasonic sensor is connected with an input end of the bellmouth device; an output end of the bellmouth device is connected with a B input end of the ultrasonic sensor. The monitor has the advantages that: firstly, the state monitoring precision for intelligent manhole covers is greatly improved, and omitted alarm and false alarm are eliminated; secondly, the state monitoring efficiency for intelligent manhole covers is greatly increased and state change can be monitored quickly.

Description

technical field [0001] The invention is an intelligent manhole cover monitor based on ultrasonic detection technology, which belongs to the technical field of manhole cover state monitoring. Background technique [0002] Due to the development of smart cities, the municipal government and other industries and departments have improved their management levels. Municipal departments and communication operators have a large number of underground pipeline resources. There are manhole covers at the entrances and exits of the pipelines. Traditional manhole covers are easily damaged or stolen, pipeline resources are illegally occupied, and uncovered wellheads have major safety hazards. These problems It needs to be solved by technical means. The smart manhole cover can notify the relevant person in charge in a timely manner, and take protective and maintenance measures in a short time, avoiding theft of resources and ensuring the safety of passing vehicles and pedestrians. [000...

AI Technical Summary

Problems solved by technology

[0006] There are two existing state monitoring technologies for manhole covers. One is to use a travel switch to judge the opening state. This scheme has two disadvantages. One is that the travel switch is easily deformed and elastically fails under the long-term pressure of the manhole cover, thus losing the monitoring function. The problem of installation, 2. The travel switch is not conducive to construction

During installation and construction, the monitor needs to be installed on the well wall, and the height of the travel switch needs to be adjusted. It is very inconvenient to drill and install on the well wall. Workers have to use ladders to go down to the well. Such construction in the middle of the road will cause The municipal government brings difficulties; the other is to use a tilt sensor, which solves the above installation problems, but the tilt can only monitor the inversion of the manhole cover. If the manhole cover moves in translation, it cannot be detected, and when the manhole cover is lifted An alarm will be generated, but when the manhole cover is moved to another place and laid down flat, the alarm will be eliminated, which is inconsistent with the actual state and needs to be resolved manually by maintenance personnel, which greatly reduces the use efficiency, so the second solution still has major problems. defect

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