The detection and control method and system of the door opener driving the door body encountering resistance and retreating

Abstract

The invention relates to the technical field of door openers, in particular to a method and a system for supervising retreating and stopping of a door opener driving door body in case of obstacles. The method comprises the following steps: (A) setting a door opening allowed current reference value range and a door closing allowed current reference value range of the door opener; (B) starting the door opener driving door body to operate; (C) sampling a current value in operation by using a time interval method and figuring out a current difference between each two sampled currents; and (D) if the door opener is in a door opening stage, judging whether the current difference at the moment falls within the door opening allowed current reference value range or not. Through comparing the current difference and the preset current reference value range, whether the door body meets an obstacle in the operation process or not is obtained, so as to achieve full-range tracking, small dynamic sensing range and sensitive reaction; moreover, as the current reference value range is a preset range value but not a fixed value in the prior art, the need of periodic manual adjustment in the prior art can be avoided and greater flexibility is obtained.

Description

Technical field: [0001] The present invention relates to the technical field of door openers, in particular to a detection and control method and a system thereof for driving a door body of a door opener to stop when encountering resistance. Background technique: [0002] During the operation of the door driven by the door opener, once an obstacle is hit, pinched, squeezed, etc., the control system needs to issue an instruction to make the door stop or retreat immediately. This is one of the necessary safety measures for the design of the door opener. . The control system must rely on the size of the perceived resistance to decide when to issue a control command or whether to issue a control command. [0003] At present, the control system of the door opener judges when to issue a control command or whether to issue a control command. The main method is: use manual adjustment to set the reference value of the resistance in the control system, that is, exceeding this value s...

AI Technical Summary

Problems solved by technology

[0004] Using the above prior art door opener-driven door back-stop detection and control method, although it can also meet the requirements of the door opener-driven door back-stop in case of resistance to a certain extent. requirements, but more often there are still the following disadvantages: Although the reference value of the resistance is set by manual adjustment at the beginning, in the actual application process, due to the installation conditions of the door opener and the door body, the use environment, and the load And the influence of inertia, etc., the actual speed value or actual current value reflected in the control system is different. In order to adapt to the phenomenon that the resistance of the door opener and the door body increases due to long-term operation in the outdoor environment, people often set A larger reference value means that a larger resistance needs to be encountered before the door body can retreat and stop when encountering obstacles. However, at this time, the damage to the obstacle may have been caused, and if you want to obtain a reference value that matches the door body, you need to manually Regular correction and adjustment, lack of flexibility, unresponsive, time-consuming and labor-intensive, not suitable for the actual promotion and application of this product

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