Elevator brake fault monitoring method, device and system
A fault monitoring and brake device technology, which is applied in the field of elevators, can solve problems such as insufficient brake energy, car slipping, car falling, etc., and achieve the effect of improving reliability
Active Publication Date: 2021-02-09
FATRI XIAN TESTING & CONTROL TECH CO LTD
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Problems solved by technology
With the increase of the service life of the elevator, the brake shoes will inevitably have certain wear or cracks, etc. When the surface is damaged or cracked, it will cause the abnormality of the brake, which is manifested by insufficient energy of the brake. The car slides, which may cause the car to fall, etc.
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[0037] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.
[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and ...
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The elevator brake fault monitoring method, device and system provided by the embodiments of the present invention, the method includes: receiving the acoustic emission signal, the acoustic emission signal is sent by the brake device when the elevator brakes; converting the acoustic emission signal into a voltage signal , filtering the voltage signal to extract signal eigenvalues; wherein, the signal eigenvalues include time-domain signal eigenvalues and frequency-domain signal eigenvalues; according to the time-domain signal reference range and the frequency-domain signal reference range, it is judged whether the brake device is faulty; Wherein, if the characteristic value of the time-domain signal is not within the reference range of the time-domain signal, it is determined that the brake device is faulty; if the characteristic value of the frequency-domain signal is not within the reference range of the frequency-domain signal, it is determined that the brake device is faulty. The above solution can monitor the brake device through the signal characteristic value of the acoustic emission signal, and improve the reliability of the safety monitoring of the elevator.
Description
technical field [0001] The invention relates to the technical field of elevators, in particular to an elevator brake fault monitoring method, device and system. Background technique [0002] At present, with the improvement of people's safety requirements for taking elevators, the traditional elevator safety monitoring scheme can no longer meet the actual use needs. Among them, the brake device is an important safety guarantee for the elevator. If there is a problem with the brake device, there will be a major safety hazard. [0003] In the elevator equipment, the brake device (such as the brake shoe or the brake shoe) is the moving part of the brake, and the surface is the friction surface. When the brake drum pushes the brake device, it will stop the elevator. In some cases, the brake device will stop the elevator when the motor is powered off. With the increase of the service life of the elevator, the brake shoes will inevitably have certain wear or cracks, etc. When th...
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IPC IPC(8): B66B5/00B66B5/02
CPCB66B5/00B66B5/02G01R31/08
Inventor 赵阳李红星
Owner FATRI XIAN TESTING & CONTROL TECH CO LTD