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Bolt or nut looseness monitoring method and system

A technology for loosening nuts and bolts, applied in the field of industrial inspection, can solve problems such as large influence of ambient temperature, influence of bolt and/or nut performance, limited application, etc.

Active Publication Date: 2019-06-18
JIAXING BROADSENS TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, embodiments of the present invention provide a method and system for monitoring loose bolts or nuts to solve the problem that the existing methods for monitoring loose bolts or nuts are greatly affected by ambient temperature, poor monitoring effect, high cost, inconvenient installation and use, and limited application. Limits, issues that have a definite effect on the performance of the bolt and / or nut

Method used

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  • Bolt or nut looseness monitoring method and system
  • Bolt or nut looseness monitoring method and system

Examples

Experimental program
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Embodiment 1

[0039] A kind of bolt or nut loosening monitoring method that the present embodiment proposes, the method comprises:

[0040] S100. Measure the motion parameters of the bolt and / or nut through at least one MEMS sensor arranged on the bolt and / or nut to be monitored. The MEMS sensor includes at least one MEMS acceleration sensor for measuring acceleration parameters and / or at least one for measuring MEMS geomagnetic sensor for geomagnetic parameters. The acceleration parameter information includes linear acceleration, gravitational acceleration, or calculated velocity or displacement parameters. Geomagnetic parameter information includes geomagnetic direction or magnetic field strength.

[0041] Further, the MEMS sensor also includes at least one MEMS gyroscope for measuring angular velocity parameters.

[0042] Further, the MEMS sensor is fixed on the surface or inside of the bolt and / or nut by means of adhesion, adsorption or fastening, or forms an integral body with the bo...

Embodiment 2

[0112] Corresponding to Embodiment 1 above, this embodiment also proposes a bolt or nut loosening monitoring system, which includes a data acquisition module, a data transmission module, a data processing module and a power supply module.

[0113] The data acquisition module includes at least one MEMS sensor arranged on the bolts and / or nuts to be monitored, the MEMS sensor includes at least one MEMS acceleration sensor for measuring acceleration parameters, and the data acquisition module is used to measure the motion parameters of the bolts and / or nuts .

[0114] The data transmission module is used for data transmission between the data acquisition module and the data processing module, and sends and receives data through wired or wireless means.

[0115] The data processing module is used to obtain at least one spin-independent vector of the bolt and / or nut on its self-rotation plane according to the motion parameters, and calculate the correlation between the spin-indepen...

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Abstract

The embodiments of the present invention disclose a bolt or nut looseness monitoring method and system. The method includes the following steps that: the motion parameters of a bolt and / or nut to be monitored are measured through at least one MEMS sensor disposed on the bolt and / or a nut to be monitored; at least one spin-independent vector of the bolt and / or nut on the spin plane of the bolt and / or nut is measured according to the motion parameters; an included angle between the spin-independent vector and the spin-dependent vector of the bolt and / or nut on the spin plane of the bolt and / or nut is calculated, and the total unscrewing angle or total number of the unscrewing turns of the bolt and / or nut during a monitoring period is obtained; and the looseness monitoring result of the boltand / or nut is obtained according to the total unscrewing angle or the total number of the unscrewing turns of the bolt and / or nut. The bolt or nut looseness monitoring method and system do not affectthe performance of the bolt or nut. The bolt or nut looseness monitoring method and system have the advantages of high practicability, low cost, high efficiency, simple calculation, low power consumption, wide application range and the like.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of industrial detection, and in particular to a method and system for monitoring loosening of bolts or nuts. Background technique [0002] Using bolts or nuts for fastening installation is a ubiquitous technical means and method to achieve the purpose of fixing the structure or transmission. In some fields, the stability of bolt or nut fastening involves personal and property safety. For example, the loose bolts or nuts on the wheels of the car will cause the wheels to fall off, and even cause car accidents. , It is extremely important to monitor the looseness of bolts or nuts whether they are fastened firmly. [0003] The existing monitoring method for loosening of bolts or nuts includes manual inspection, but manual inspection is inefficient and not timely. Using the automatic periodic or online detection technology of the electronic system, it is often realized by installing s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01B7/30G01V3/00
Inventor 刘星星秦咏梅
Owner JIAXING BROADSENS TECH LTD
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