Laser kick control module

Abstract

The utility model relates to the technical field of electric tail doors, and discloses a laser foot kicking control module which comprises a host box and fixing blocks fixed at two ends of the host box, light holes are respectively arranged at the upper end of the host box, a circuit board is installed inside the host box, and a projection lamp, a reflector and an induction module are installed on the circuit board. According to the utility model, the projection lamp emits a specific mark, and the mark is projected to a designated position on the ground after light rays are reflected by the reflector; the induction module is used for controlling the on and off actions of the projection lamp and detecting the human body position and the human foot actions, and when the specified actions are met, a trigger signal is output, and the electric tail gate is opened; the distance, the signal intensity and the azimuth angle of the human body are calculated through the human body position sensing module, the speed, the change rate, the signal intensity and the azimuth angle of the human feet are calculated through the human foot action sensing module, and the situation that a person is triggered by mistake when walking outside the vehicle at will can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric tailgate technical field, concretely is a laser kicks control module. BACKGROUND

[0002] In recent years, domestic cars have been equipped with electric tailgate products and one-kick products, which realize the electric opening and closing of the tailgate through the kick trigger mode, greatly improving the comfort and brand value of users. However, the one-kick product has always been at risk of mis-triggering when washing the car or flowing water. Therefore, manufacturers need to handle these problems through software algorithms during design to minimize the risk of mis-triggering.

[0003] A patent in China discloses a kick induction automatic opening automobile tailgate device (authorized publication number CN206337968U). In this patent technology, the flexible strip-shaped metal sheet of the capacitive sensor is directly welded on the PCB board in the kick control box. Finally, the control box and the capacitive sensor are installed below the inner wall of the bumper. The capacitive sensor is tightly attached to the inner wall of the bumper, effectively expanding the sensing area, and will not cause abnormal data due to sensor shaking. At the same time, it can prevent water, dust and oil stains, has the characteristics of simple structure, convenient installation and long service life. It only has one capacitive sensor, and the capacitive sensor is tightly attached to the inner wall of the bumper. Even if the bumper is deformed due to being hit, it will not affect the use effect. However, the human recognition efficiency is not high, and misidentification is prone to occur. UTILITY MODEL CONTENTS

[0004] The purpose of the utility model is to provide a laser kick control module to solve the problems raised in the background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A laser kick control module, comprising a host box and fixed blocks fixed at both ends of the host box, a wiring port is arranged at the front end of the host box, and light transmission holes are arranged at the upper end of the host box respectively, a circuit board is installed in the host box, a projection lamp, a lens and an induction module are installed on the circuit board.

[0007] As a further scheme of the utility model: the induction module comprises a power supply circuit, a human body position induction module, a human foot action induction module, a trigger circuit and a projection lamp control circuit.

[0008] As a further scheme of the utility model: the human body position induction module comprises a position induction antenna, a position induction chip and a position main control chip, and the position induction chip is a micron wave position chip or a millimeter wave position chip.

[0009] As a further scheme of the utility model: the human foot action sensing module includes action sensing antenna, action sensing chip and action main control chip, and the action sensing chip is a micron wave action chip or a millimeter wave action chip.

[0010] As a further scheme of the utility model: the projection lamp includes high-brightness LED lamp beads and an LED constant current driving chip.

[0011] Compared with the prior art, the utility model has the beneficial effects of:

[0012] The utility model discloses a specific mark is sent through the projection lamp, and the mark is projected to the ground designated position through the light transmission hole after the light of the mark is concentrated and restricted through the lens, and is used for indicating the inductive area of the kick, and the projection lamp is controlled to be lighted and extinguished through the sensing module, and the human body position and human foot action are detected simultaneously, when the designated action is met, then the trigger signal is outputted, and the electric tail door is opened, the distance of the human body, the signal strength and the azimuth angle are calculated through the human body position sensing module, the speed of the human foot, the change rate, the signal strength and the azimuth angle are calculated through the human foot action sensing module, and the condition of the accidental triggering when the person walks randomly outside the car can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a kind of laser kick control module's structural schematic diagram;

[0014] Fig. 2 It is a kind of laser kick control module's internal structure schematic diagram;

[0015] Fig. 3 It is a kind of laser kick control module in sensing module's frame schematic diagram;

[0016] Fig. 4 It is a kind of laser kick control module in human body position sensing module's frame schematic diagram;

[0017] Fig. 5 It is a kind of laser kick control module in human foot action sensing module's frame schematic diagram;

[0018] Fig. 6 It is a kind of laser kick control module in projection lamp's frame schematic diagram.

[0019] In the drawing: 1, main machine box;2, light transmission hole;4, wiring port;5, projection lamp;6, lens;7, circuit board;8, sensing module;9, fixed block. DETAILED DESCRIPTION

[0020] Please refer to Figs. 1-6The utility model discloses an embodiment of a kind of laser kicks control module, including host box 1 and the fixed block 9 of fixed in the both ends of host box 1, the front end of host box 1 is provided with wiring port 4, and light transmission hole 2 is respectively provided with in the upper end of host box 1, circuit board 7 is installed in the inside of host box 1, projection lamp 5, lens 6 and sensing module 8 are installed on circuit board 7, the entire laser kicks control module can be installed at the rear bumper of car by fixed block 9, and make light transmission hole 2 and sensing cover 3 towards ground;Again, wiring port 4 is connected with external power supply and electric tailgate system by trigger line;Specific mark is sent by projection lamp 5, mark is projected to ground designated position after light concentration and constraint light by lens 6 and through light transmission hole 2, for indicating the sensing area of kicking;The size of projection mark indicates sensing range, that is, how big the mark is, then how big the sensing range is, so that user is convenient in designated area to execute specific action;Sensing module 8 is used for controlling the lighting and extinguishing action of projection lamp 5, and simultaneously detecting human position and human foot action, when meeting specified action, then output trigger signal.

[0021] In Fig. 3 The utility model discloses an embodiment of a kind of laser kicks control module, including host box 1 and the fixed block 9 of fixed in the both ends of host box 1, the front end of host box 1 is provided with wiring port 4, and light transmission hole 2 is respectively provided with in the upper end of host box 1, circuit board 7 is installed in the inside of host box 1, projection lamp 5, lens 6 and sensing module 8 are installed on circuit board 7, the entire laser kicks control module can be installed at the rear bumper of car by fixed block 9, and make light transmission hole 2 and sensing cover 3 towards ground;Again, wiring port 4 is connected with external power supply and electric tailgate system by trigger line;Specific mark is sent by projection lamp 5, mark is projected to ground designated position after light concentration and constraint light by lens 6 and through light transmission hole 2, for indicating the sensing area of kicking;The size of projection mark indicates sensing range, that is, how big the mark is, then how big the sensing range is, so that user is convenient in designated area to execute specific action;Sensing module 8 is used for controlling the lighting and extinguishing action of projection lamp 5, and simultaneously detecting human position and human foot action, when meeting specified action, then output trigger signal.

[0022] S1, human position sensing module scans whether human is close, for example, 1 time is scanned every 2 seconds, to reduce power consumption;At this time, projection lamp 5 and human foot action sensing module are in dormant state;

[0023] S2, when person is close to a certain distance from the back of car, for example, close to 1.5 meters range, human position sensing module controls projection lamp 5 to work, and projects specific mark to ground, projection lamp diameter is about 10cm, and specific size can be adjusted according to actual needs;

[0024] S3, when person is close to the front of projection lamp, for example, 0.5 meters range, human position sensing module controls human foot action sensing module to work;

[0025] S4, when person steps on projection lamp mark, human foot action sensing module identifies the action of foot and returns to human position sensing module;After judging to meet set action, human position sensing module informs electric tailgate system to execute door opening operation;When person steps on projection lamp mark, it is not identified as effective action;

[0026] S5, when the person is in the trunk detection range, the electric tailgate system enters the waiting mode, when the person leaves the trunk detection range, the electric tailgate system informs the electric tailgate to perform the door closing operation, and the electric tailgate system reenters the scanning state and waits for a person to approach.

[0027] In Fig. 4 , the human body position sensing module includes a position sensing antenna, a position sensing chip and a position master control chip, the position sensing chip is a micro-wave position chip or a millimeter-wave position chip;

[0028] The position master control chip controls the position sensing chip to periodically scan, and after the high-frequency wave is sent out through the position sensing antenna, the distance, signal strength and azimuth angle of the human body are calculated, and the position master control chip is returned through a mode including but not limited to a serial port, IIC and SPI;

[0029] Different from the capacitive kick and the common microwave kick or ultrasonic detection mode, the output signal of the human body position sensing module has an azimuth angle, that is, it can be judged whether the person stands in the middle of the rear of the vehicle or deviates to the left or right, so as to realize that when the person approaches from the rear of the vehicle, the projection lamp is lit, and when the person walks from the left to the right of the vehicle or from the right to the left, no kick recognition action is performed; in this way, the situation of accidental triggering when the person walks randomly outside the vehicle is greatly avoided.

[0030] In Fig. 5 , the human foot action sensing module includes an action sensing antenna, an action sensing chip and an action master control chip, the action sensing chip is a micro-wave action chip or a millimeter-wave action chip;

[0031] The action master control chip controls the action sensing chip to periodically scan, and after the high-frequency wave is sent out through the action sensing antenna, the speed, change rate, signal strength and azimuth angle of the human foot are calculated, and the action master control chip is returned through a mode including but not limited to a serial port, IIC and SPI;

[0032] Different from the human body position sensing module, the human foot action sensing module identifies the human foot action, and since the human foot is relatively thin and the distance changes little when the human foot performs a specified action, the data processed is not distance, but distance change detected, so as to obtain speed and change rate data and judge whether the specified action is met;

[0033] In addition, the human foot action sensing module can determine the azimuth angle of the human foot, so as to set a small azimuth angle, so that the foot action must be realized in the specified range, thereby reducing the risk of false triggering; for example, set the left and right of the sensing antenna each 10° as the detection range, generally the rear bumper of the vehicle is only 30-40 cm from the ground, assuming that the rear bumper is 30 cm from the ground, according to the triangular calculation formula, the detection range projected to the ground is about a circular area with a radius of 5 cm;

[0034] Unlike the capacitive kick and the common microwave kick, the human foot action sensing module limits the area of the human foot action, for example, it can be recognized within the marker projection range, and it is not recognized outside the projection range; the capacitive type cannot limit the sensing area too small, otherwise the sensitivity is not enough; the common microwave kick has no azimuth angle signal and cannot limit the recognition range.

[0035] In Fig. 6 In the projection lamp 5, the high-brightness LED lamp bead and the LED constant current driving chip are included, a fixed current is stably output through the LED constant current driving chip, the driving current is prevented from exceeding the maximum rated value of the high-brightness LED lamp bead, and the reliability of the high-brightness LED lamp bead is protected.

[0036] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A laser kick control module comprising a main box (1) and fixing blocks (9) fixed at both ends of the main box (1), characterized in that, The front end of the host box (1) is provided with a wiring port (4), and the upper end of the host box (1) is respectively provided with a light transmission hole (2), the inside of the host box (1) is installed with a circuit board (7), the circuit board (7) is installed with a projection lamp (5), a reflector (6) and an induction module (8).

2. A laser kick control module according to claim 1, wherein, The induction module (8) comprises a power supply circuit, a human body position induction module, a human foot action induction module, a trigger circuit and a projection lamp control circuit.

3. A laser kick control module according to claim 2, wherein, The human body position induction module comprises a position induction antenna, a position induction chip and a position main control chip, and the position induction chip is a micro-wave position chip or a millimeter-wave position chip.

4. The laser kick control module of claim 2, wherein, The human foot action induction module comprises an action induction antenna, an action induction chip and an action main control chip, and the action induction chip is a micro-wave action chip or a millimeter-wave action chip.

5. A laser kick control module according to claim 2, wherein, The projection lamp (5) comprises a high-brightness LED lamp bead and an LED constant current driving chip.

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