A method for detecting elevator overload
An elevator and frequency technology, applied in the field of elevators, can solve problems such as hidden dangers, failure of elevators to report overweight, lack of elevator evaluation, etc., to achieve the effect of ensuring safe rides
Active Publication Date: 2022-06-24
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
Method used
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[0021] The method for detecting elevator overload of the present invention will be described in more detail below with reference to the schematic diagrams, wherein the preferred embodiments of the present invention are shown. It should be understood that those skilled in the art can modify the present invention described herein and still realize the advantages of the present invention. Effect. Therefore, the following description should be construed as widely known to those skilled in the art and not as a limitation of the present invention.
[0022] The invention is described in more detail by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become apparent from the following description and claims. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explai...
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The present invention discloses a method for detecting elevator overload, comprising: acquiring audio data with a sampling frequency of 8000 Hz, performing Fourier transform on the audio data every 25 ms to obtain the frequency; counting nCount++ when a frequency of 3000 Hz to 4000 Hz appears, and recording the Frequency nRate; record the interval time nTime between adjacent frequencies of 3000Hz to 4000Hz; compare whether adjacent nRates are the same, if they are different, stop detection; if they are the same, record the next nTime; if the difference between adjacent nTime exceeds 50ms, stop detection; when nCount++ accumulates to the preset number of times, and detects whether the automatic door closing time of the elevator is overtime; if it is overtime and detects the entry of people or objects, it is determined that the elevator is overloaded. The invention provides overload judgment, which can well ensure the safe ride of the user, and can evaluate the use of the elevator through the Internet of Things.
Description
technical field [0001] The invention relates to the field of elevators, in particular to a method for detecting overload of an elevator. Background technique [0002] Elevator is the most commonly used vertical transportation means in modern high-rise buildings. It saves people's time and physical strength and provides convenience for daily life. As a special equipment closely related to the life safety of the public, the safe operation of the elevator has attracted more and more attention from the society. [0003] The existing elevator light curtain cannot detect the overweight of the elevator, and the elevator itself cannot report the overweight situation. There is a lack of a large part of the evaluation of the elevator. If the elevator is often overweight, it may bring a series of hidden dangers. [0004] In view of this, it is urgent to design a method for detecting elevator overload, so as to overcome the hidden danger of existing elevator overload. SUMMARY OF THE ...
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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