Detection method for detecting whether outer well lid of intelligent well lid exists or not

Abstract

The invention discloses a detection method for detecting whether an outer well lid body of an intelligent well lid exists or not. The detection method comprises the steps of detecting the signal intensity of wireless signals; judging whether the number of the signal intensities in the database is smaller than a first preset threshold value or not when no jump is detected, and calculating to obtaina jump judgment threshold value according to the signal intensities in the database when the number is not smaller than the first preset threshold value; judging whether the difference value betweenthe current signal intensity and the last signal intensity in the database is greater than a jump judgment threshold value or not, if so, marking that jump is detected, and storing the current signalintensity as the initial signal intensity after jump detection into the database; when jumping is detected and the number of the signal intensity after jumping is a second preset threshold value, whether the difference value of the weighted average value before jumping and the weighted average value after jumping is larger than a judgment threshold value or not is judged, and if yes, it is judgedthat the well lid does not exist; the detection method is suitable for a use environment with a large distance between the inner well lid and the outer well lid, and whether the outer well lid existsor not can be accurately judged.

Description

technical field [0001] The invention belongs to the technical field of manhole cover detection, and in particular relates to a detection method for detecting whether an outer manhole cover of an intelligent manhole cover exists. Background technique [0002] The intelligent electronic manhole cover is used to be installed at the entrance and exit of high-voltage cable tunnel wellhead, communication cable tunnel wellhead, comprehensive pipe gallery wellhead, municipal wellhead, gas pipeline wellhead, sewage pipeline wellhead, etc., and is used as an inner manhole cover to prevent theft. Manhole covers are made of cement, cast iron, stainless steel, composite materials, etc., and are used as load-bearing. [0003] The outer manhole cover does not have the anti-theft function, and it is necessary to detect whether the outer manhole cover is missing in real time; the current detection methods all use mechanical methods for detection. The outer manhole cover offsets, and when ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of this detection method are: the distance between the inner manhole cover and the outer manhole cover is uncertain, and the use of mechanical sensors cannot be fully compatible with all operating environments; the reliability of the mechanical detection arm or ejector rod is insufficient, and it is easy to be damaged during installation or maintenance. It is very easy to be damaged by external force when the outer manhole cover is missing and unprotected; the mechanical sensor itself has limited protection ability, and it is easy to be damaged by rain, high temperature and high humidity. Therefore, it is necessary to find a new device or method to solve such problems

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