Anti-pinch system of household electric window and achieving method thereof

Abstract

The invention relates to an anti-pinch system of a household electric window and an achieving method thereof. The anti-pinch system of the household electric window is characterized by comprising an electroplating guide layer arranged on the outer edge of a sash or / and the inner edge of a window frame, a touch inductive circuit and a control unit, wherein the input end of the touch inductive circuit is in electric connection with the electroplating guide layer, and the control unit is connected with the output end of the touch inductive circuit and used for controlling running of a driving motor of the electric window. Compared with the prior art, the anti-pinch system of the household electric window has the advantages that by arranging the electroplating guide layer on the outer edge of the sash of the electric window and / or the inner edge of the window frame, when users' hands or skin contact or contacts with the edge of the sash or the edge of the window frame, the touch inductive circuit can achieve induction through the electroplating guide layer at once and then inform the control unit, and the control unit can output control signals at once to enable the driving motor to stop running, thereby avoiding pinch injury accidents. Besides, an anti-pinch current threshold is updated dynamically, and accordingly protection failures caused by resistance changes of the window after long-time use of the household electric window can be avoided.

Description

technical field [0001] The invention relates to a hand-pinch prevention system for household electric windows and a realization method thereof. Background technique [0002] At present, most household electric windows do not have an anti-pinch design. When the motor drives the window to close, if the closing speed of the window is too fast, and the user's hand is too late to remove from the edge of the window or the edge of the window frame, it is very easy to cause damage to the window. Hazardous situation where the frame traps the user. [0003] Although we can control the opening or closing speed of the window door by controlling the current flowing through the motor that drives the electric window door to open and close, but due to the special structure of the motor, the current flowing through the motor often produces large fluctuations. At present, most household electric windows with anti-pinch function are realized by calculating the drive motor current, that is, wh...

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Problems solved by technology

[0004] Moreover, the closing force of each type of window is inconsistent, and the opening and closing force of the same type of window will also change after a period of use, so if the anti-pinch current threshold is always the same, it will also affect the pinch. The judgment of the hand interferes. If the window switch becomes smooth and the force decreases after a period of use, then if the previously set anti-pinch current threshold is still used, the occurrence of hand pinch cannot be prevented; if the window is used for a period of time Later, due to deformation and corrosion, the force of the switch window becomes larger, and then using the original anti-pinch current threshold will cause frequent malfunctions

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