Estimation Method of Elevator Door Running Speed ​​Based on Energy Threshold Algorithm

A technology of energy threshold and velocity estimation, applied in computing, transportation and packaging, complex mathematical operations, etc., can solve problems such as distortion, velocity signal error, etc., to reduce losses, improve efficiency, and reduce labor costs.

Active Publication Date: 2021-10-08
HANGZHOU DIANZI UNIV +1
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Problems solved by technology

The acceleration signal of the elevator door can be used to calculate and estimate its real-time running speed very well, but the acceleration sensor is accompanied by various noises and interferences during the on-site acquisition process, resulting in the integrated speed signal in the process of acceleration signal processing. A large error, and the result after the second integration has serious distortion

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  • Estimation Method of Elevator Door Running Speed ​​Based on Energy Threshold Algorithm
  • Estimation Method of Elevator Door Running Speed ​​Based on Energy Threshold Algorithm
  • Estimation Method of Elevator Door Running Speed ​​Based on Energy Threshold Algorithm

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Embodiment Construction

[0089] The present invention will be further described below in conjunction with accompanying drawing and example.

[0090] Such as Figure 1-7 As shown, the present invention adopts a time-domain detrending term, fast Fourier transform to frequency-domain filtering, and inverse Fourier transform to time-domain by processing the measured elevator door acceleration signal, and adopts an energy threshold algorithm for denoising. Integrate the algorithm to obtain the precise speed signal, and propose a real-time running speed estimation method of the elevator door based on the energy threshold algorithm.

[0091] The present invention first obtains through on-the-spot measurement figure 1 The raw signal of the acceleration of the elevator door is chaotic and disorderly. figure 2 It is the time-domain image after detrending the original signal of the acceleration, and the image after the detrending process is shifted to the horizontal line as a whole, which means that a large a...

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Abstract

The invention discloses a method for estimating the real-time running speed of an elevator door based on an energy threshold algorithm. The present invention comprises the following steps: step 1, obtaining the acceleration signal of the original elevator door operation through an acceleration sensor; step 2, performing detrending item processing on the obtained acceleration signal; step 3, converting it into frequency domain by fast Fourier transform, and filtering Denoising; step 4, perform Fourier inverse transform on the filtered frequency domain signal, and calculate the energy of the acceleration signal; step 5, set the threshold value for the running phase of the elevator, and remove the jitter noise signal; step 6, the final acceleration signal q(t) is integrally processed to obtain the corresponding real-time speed signal. The invention removes the jitter interference signal existing at the moment of opening and closing the door of the elevator and in the gap between the opening and closing of the door, and at the same time ensures that the loss of useful signals is reduced, and the speed signal is obtained by integrating.

Description

technical field [0001] The invention belongs to the field of electrical control and digital signal processing, and relates to a method for estimating the real-time running speed of an elevator door based on an energy threshold algorithm. Background technique [0002] As a means of public transportation, the most basic and essential function of an elevator is to ensure that people or goods are delivered to the destination floor smoothly and safely. Ensuring the safe operation of elevators and minimizing losses has become a top priority for government regulators, elevator manufacturers, elevator suppliers and other departments to urgently solve. [0003] In the safe operation of the elevator, the door switch and running speed are one of the important indicators to measure whether the elevator is running normally. The acceleration signal of the elevator door can be used to calculate and estimate its real-time running speed very well, but the acceleration sensor is accompanied ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06F17/15G06F17/11B66B5/00
CPCG06F17/11G06F17/156B66B5/0018G06F2218/02G06F2218/08
Inventor 曹九稳戴浩桢张未来
Owner HANGZHOU DIANZI UNIV
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