Elevator overload detection method
An elevator and frequency technology, applied in the elevator field, can solve problems such as hidden dangers, the elevator cannot report overweight, and the lack of elevator evaluation, so as to ensure the effect of safe riding.
Active Publication Date: 2021-07-02
MOCHITEC SHANGHAI CO LTD
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Problems solved by technology
[0003] Existing elevator light curtains cannot detect that the elevator is overweight, and the elevator itself cannot report the overweight situation. A large part of the evaluation of the elevator is missing. If the elevator is often overweight, it may also bring a series of hidden dangers
[0004] In view of this, there is an urgent need to design a method for detecting elevator overloading, so as to overcome the hidden dangers of the existing elevator overweight
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[0021] The method for detecting elevator overload of the present invention will be described in more detail below in conjunction with schematic diagrams, wherein a preferred embodiment of the present invention is represented, it should be understood that those skilled in the art can modify the present invention described here, and still realize the advantages of the present invention Effect. Therefore, the following description should be understood as the broad knowledge of those skilled in the art, but not as a limitation of the present invention.
[0022] In the following paragraphs the invention is described more specifically by way of example with reference to the accompanying drawings. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the e...
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The invention discloses an elevator overload detection method. The method comprises the following steps that audio data at the sampling frequency of 8000Hz is acquired, and Fourier transformation is conducted on the audio data every 25ms to acquire frequency; when the frequency from 3000Hz to 4000Hz appears, a count nCount++ is recorded, and the frequency nRate is recorded; the interval time nTime of the adjacent frequency from 3000Hz to 4000Hz is recorded; whether adjacent nRates are the same or not is judged through comparison, and if the adjacent nRates are different, detection is stopped; if the adjacent nRates are identical, the next nTime is recorded; if the difference between the adjacent nTime exceeds 50ms, the detection is stopped; when the nCount++ is accumulated to a preset number of times, whether the automatic door closing time of an elevator is out or not is detected; and if time is out and entering of people or objects is detected, it is determined that the elevator is overloaded. According to the method, overload judgment is provided, safe riding of a user can be well guaranteed, and the use condition of the elevator can be evaluated through an Internet of Things.
Description
technical field [0001] The invention relates to the field of elevators, in particular to a method for detecting elevator overload. Background technique [0002] Elevator is the most commonly used vertical transportation vehicle in modern high-rise buildings. It saves people's time and physical strength and provides convenience for daily life. As a special equipment that is closely related to the safety of public life, the safe operation of elevators has attracted more and more attention from the society. [0003] Existing elevator light curtains cannot detect that the elevator is overweight, and the elevator itself cannot report the overweight situation. A large part of the evaluation of the elevator is missing. If the elevator is often overweight, it may also bring a series of hidden dangers. [0004] In view of this, there is an urgent need to design a method for detecting elevator overloading, so as to overcome the hidden danger of existing elevator overloading. Conten...
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IPC IPC(8): B66B5/14B66B5/00
CPCB66B5/145B66B5/0006
Inventor 方峥田李金鹏齐洋
Owner MOCHITEC SHANGHAI CO LTD