A control method for an electric lifting platform that realizes retreat in case of resistance

Abstract

The invention relates to the technical field of electric lifting platforms, in particular to a control method for an electric lifting platform that realizes retreat in case of resistance. It includes the following steps: S1, detecting the state of the lifting platform at an interval of X time, if the lifting platform is in a static state, jump to S2; if the lifting platform is in motion, then jump to S3; S2, read the multi-axis motion sensor The angular velocity value and / or the acceleration value are used as the reference value, and then return to step S1; S3, read the angular velocity value and / or the acceleration value of the multi-axis motion sensor, and then compare it with the reference value, if the changed value after the comparison exceeds the set value If the threshold is determined, it is judged as being blocked, and then the lifting platform is controlled to stop or perform a retreat action; if the change value after comparison does not exceed the set threshold, it is judged as not being blocked, and return to step S1. The lifting platform controlled by this control method has a low false trigger probability and a high judgment accuracy rate.

Description

technical field [0001] The invention relates to the technical field of electric lifting platforms, in particular to a control method for an electric lifting platform that realizes retreat in case of resistance. Background technique [0002] Electric lifting platforms are generally used in residential, office and medical fields, such as height-adjustable desks, dining tables, tatami mats, desks, medical beds, etc. When the user adjusts the lifting platform, if the platform or its frame encounters an obstacle, it may damage the obstacle or the structure of the platform itself, and if the collision is really squeezed to the human body, it may cause personal injury. [0003] Most of the lifting platforms on the market that implement the function of falling back in case of resistance use the following methods: detect resistance by detecting the change of current during the collision process, but the sensitivity of current detection is low, greatly affected by the structure and te...

AI Technical Summary

Problems solved by technology

When the user adjusts the lifting platform, if the platform or its frame encounters an obstacle, it may damage the obstacle or the structure of the platform itself. If the collision goods are really squeezed to the human body, it may cause personal injury

[0003] Most of the lifting platforms on the market that implement the function of falling back in case of resistance use the following methods: detect resistance by detecting the change of current during the collision process, but the sensitivity of current detection is low, greatly affected by the structure and technology, and the reliability is poor The problem

Therefore, there are also some lifting platforms in the prior art that use other methods to detect obstacles, such as the Chinese patent, the announcement number is CN 207115083, which is called a kind of electric lifting platform that can be retracted when encountering obstacles. It uses multi-axis sensors to detect obstacles. However, when the above-mentioned patent is in a static state, if there is a possibility of false triggering if there is vibration or shaking, and the reference value of the above-mentioned patent is set, if the lifting platform moves, the system is still using the original setting. baseline value, which may lead to inaccurate judgments

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