Automobile door or trunk non-contact opening/closing controller and method and automobile

Abstract

Provided is an automobile door or trunk non-contact opening / closing controller and method and an automobile. The automobile door or trunk non-contact opening / closing controller comprises a capacitance detector arranged under the corresponding door frame of the automobile or on a back bumper and an intelligent control circuit connected with the capacitance detector. The intelligent control circuit comprises a power source or a power source jack, an exciter signal generator, a signal processing circuit, an analog-digital conversion control unit and a microcontroller. The capacitance detector comprises a main capacitance detector and an auxiliary capacitance detector, wherein the detection region of the main capacitance detector is overlapped with the detection region of the auxiliary capacitance detector. Compared with the prior art, the automobile door or trunk non-contact opening / closing controller has the advantages of simple structure, few components, convenient assembly, low production cost, strong anti-interference capability, low energy consumption and zero error opening rate.

Description

technical field [0001] The invention relates to a non-contact opening and closing controller of a car door or a trunk, a car using the controller, and a non-contact opening and closing method of a car door or a trunk. Background technique [0002] With the rapid development of the automobile industry and the popularization of automobiles, more and more intelligent technologies are applied to automobiles to provide people with more comfortable services. Among them, the non-contact opening function of the trunk of the automobile provides great help to people. , especially in rainy and snowy weather, when people hold umbrellas or objects in both hands, the humanized design of this function is particularly remarkable. The existing non-contact opening technology of the trunk of a car can be summarized into the following three categories: [0003] The first category: optical sensor detection technology [0004] The principle of opening the trunk of this technology is roughly that...

AI Technical Summary

Problems solved by technology

Although the above-mentioned technical solution can eliminate the false opening caused by small animals or other objects passing under the ultrasonic sensor, there are still the following disadvantages. Dust will enter the first detection area and be detected by the first detection device, and at this time, the rainwater flowing along the vehicle body to the bottom of the car, or the sand and dust blown to the bottom of the car by the wind will enter the second detection area and be detected by the second detection device. Cause false opening; 2 If the rear of the car is the first detection area, when the car is parked behind something or people are standing behind, the detection capacitor in the first capacitive sensor will continue to send the capacitance change signal to the detection circuit, at this time if there is an animal Or when an object passes through the second detection area, the trunk of the car will be opened. Even if no animal or object passes through the second detection area, the detection capacitance of the first capacitive sensor will continue to send capacitance change signals to the detection circuit, which will consume extremely power , and this type of device is mostly powered by the car battery, the design of the device will cause the battery to run out in a specific environment, affecting the work of the car; 3. The detection area of ​​the first detection device and the second detection device required in this technical solution The direction is different, which will increase the installation and debugging time of the detection device, and the assembly efficiency is low; 4. The first capacitive sensor and the second capacitive sensor in this technical solution cannot perform differential calculations to eliminate the interference of the external environment

[0009] According to the law that people use the non-contact opening function of the car trunk, the non-contact opening function of the car trunk must still be available when the car is turned off, so the non-contact opening device of the car trunk must be based on its own detection area and The opening condition detects whether there is a human body who opens the trunk or the door for a long time. Therefore, this type of technology requires that the power consumption must be kept at a very low level, otherwise the power consumption of the battery may be exhausted, and the above three types of non-contact car trunks The control unit in the non-contact opening device is always in working condition, and the operating current of the microcontroller in the control power supply is generally 5mA. There is a danger of the battery being depleted in the environment

[0010] There is no non-contact closing technology for the trunk of a car. After opening the trunk of the car, a short person may not be able to reach the trunk lid and needs to stand on the side of the car to close the trunk. closure

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