Sensing device for car door handle and method for adjusting sensing sensitivity of car door handle
A technology of door handle and sensing device, which is applied in the field of vehicles to achieve the effect of improving the sensing sensitivity
Active Publication Date: 2021-03-23
GREAT WALL MOTOR CO LTD
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Problems solved by technology
[0005] In view of this, the present invention aims to propose a sensing device for a car door handle to solve the problem that existing capacitive touch sensors cannot effectively prevent false triggering and improve sensing sensitivity
Method used
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[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0033] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0034] Such as figure 1 As shown, the current structure of the capacitive sensor that assists in realizing the keyless entry or departure function of the car mainly includes: the pole plate 11; and the basic capacitance C when the door handle is in a natural state and no one touches it. P and the contact capacitance C in response to human touch F , and the base capacitance C P and contact capacitance C F It is electrically connected with the pole plate 11.
[0035] The principle of the capacitive sensor to identify the user's touch action is: the capacitive sensor recognizes the action of touching the door handle by detecting the degree of capacitance change of the electrode plate 11...
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The invention relates to the technical field of vehicles and provides a sensing device of a vehicle door handle and a sensing sensitivity adjustment method. The sensing device of the vehicle door handle comprises a touch sensor for detecting a sampling value produced by the touch sensor responding to a touch action, and a controller for configuring a datum line for tracking the sampling value in real time, making the datum line and the sampling value synchronously change and judging whether a trigger action is effective or not by judging whether the difference of the sampling value and the corresponding basic value on the datum line exceeds a trigger threshold value or not. By adopting the sensing device of the vehicle door handle and the sensing sensitivity adjustment method, the sensingsensitivity of the vehicle door handle can be improved on the basis that a vehicle door or trunk is effectively prevented from being mistakenly triggered and opened by environmental factors such as exposure to rain, and the demand for a key-free entry or leaving function of a user in environments such as exposure to rain is met.
Description
technical field [0001] The invention relates to the technical field of vehicles, in particular to a sensing device of a car door handle and a sensing sensitivity adjustment method. Background technique [0002] With the continuous improvement of people's requirements for vehicle comfort and convenience, the keyless entry or exit function of automobiles has been popularized from the high-end market to the low-end market, and its application is becoming more and more extensive. This keyless entry or exit function brings users a new experience of comfort and convenience. The owner does not need to take out the key at all during the whole process, and only needs to carry it with him. When the owner enters the effective range near the car and touches the door handle, the car will automatically detect the key and perform identification. If the identification is successful, the door or trunk will be opened accordingly. [0003] At present, the keyless entry or exit function uses t...
Claims
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IPC IPC(8): B60R25/20
CPCB60R25/2027B60R25/2081
Inventor 陈婷李姗李建瑞唐冬王冲
Owner GREAT WALL MOTOR CO LTD