Automobile rear tail door automatic opening control system and automobile

Abstract

The utility model discloses an automobile rear tail door automatic opening control system and an automobile. The automobile rear tail door automatic opening control system comprises a tail door controller, a remote control key and a vehicle-mounted key module. The remote control key communicates with the vehicle-mounted key module through a wireless signal, and the vehicle-mounted key module is connected with the tail gate controller; the control system further comprises a field intensity detection module, the field intensity detection module is connected with the tail gate controller, and the tail gate controller controls the rear tail gate to be opened according to authentication information of the vehicle-mounted key module and a field intensity RSS I value detected by the field intensity detection module. The electric tailgate has the advantages that the rear tailgate can be quickly and accurately opened without manual operation, the intelligent degree of opening of the rear tailgate is improved, the sense of science and technology is improved, the mode of opening the electric tailgate is more convenient, the kicking function can be replaced, a kicking sensor is omitted, and the cost of a single vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile rear door control, especially to an automobile rear door automatic opening control system and automobile. BACKGROUND

[0002] With the development of automobile intelligence, the automobile door unlocking and opening mode gradually develops from manual to electric. Taking the automobile tail door as an example, the automobile tail door has been developed from the original mechanical tail door to the electric tail door. The electric tail door saves the user's operation time and can complete the opening of the electric tail door by triggering the electric tail door opening signal.

[0003] Although the opening mode of the prior art electric tail door is very convenient, it still cannot meet the user's full-scene needs. For example, the prior art uses a foot kicking sensor to realize the opening of the electric tail door, which needs to be half-squatting to slide a foot at the corresponding position to open the rear door. For example, a kind of automobile tail door foot kicking sensor system with patent application number 201810012097.6. The foot kicking sensor requires the user to stretch out a foot at a certain position to realize the opening of the rear door. This way is inconvenient for users with objects, and the user needs to use the foot to realize the opening of the rear door. In the case of the user holding more objects, half-squatting is not possible. Therefore, the prior art foot kicking unlocking scheme still has defects and cannot meet the user's demand for conveniently opening the rear door. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art, providing an automobile rear door automatic opening control system and automobile to realize the quick and accurate opening of the rear door without manual operation, improve the intelligent degree of the opening of the rear door, improve the sense of technology, the opening mode of the electric tail door is more convenient, and can replace the foot kicking function, cancel the foot kicking sensor and reduce the cost of the vehicle.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] An automobile rear door automatic opening control system, comprising a tail door controller, a remote key, and a vehicle key module. The remote key communicates with the vehicle key module through wireless signals, and the vehicle key module is connected to the tail door controller.

[0007] The control system further comprises a field strength detection module, which is connected to the tail door controller. The tail door controller controls the opening of the rear door according to the authentication information of the vehicle key module and the field strength RSSI value detected by the field strength detection module.

[0008] The tail gate controller is connected with a memory, and the memory stores a first field strength RSSI threshold and a second field strength RSSI threshold.

[0009] The tail gate controller is connected with a timer, and the timer is used to record the time when the field strength RSSI value reaches the first field strength RSSI threshold.

[0010] The memory is an EEPROM.

[0011] The vehicle key module comprises a body controller, and the body controller is in communication connection with the remote key through a low-frequency antenna to realize the security authentication of the body controller and the remote key.

[0012] An automobile comprises the automobile tail gate automatic opening control system.

[0013] The utility model discloses the advantages are as follows: realized the quick and accurate opening of the tail gate without manual operation, improved the intelligent degree of the opening of the tail gate, improved the science and technology feeling, the mode of opening the electric tail gate is more convenient, and can replace the kicking function, cancels the kicking sensor and reduces the single vehicle cost of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0014] The contents expressed by each drawing of the present application specification and the marks in the drawing are briefly described as follows:

[0015] Figure 1 It is the principle diagram of the control system of the utility model. DETAILED DESCRIPTION

[0016] The specific embodiment of the present application is further explained in detail by comparing the drawings and describing the optimal embodiment.

[0017] The embodiment realizes the automatic recognition of the user's opening of the tail gate and the corresponding opening of the tail gate without the kicking sensor, and the main principle is to identify and authenticate the identity based on the remote key and judge through the field strength RSSI value, and when the identity recognition is passed, the RSSI value is consistent with the set threshold value, and the duration threshold value is met, the electric tail gate is opened, so that the manual operation is not needed, and the driver only needs to carry the remote key and approach the vehicle according to the pre-set logic to reach the corresponding field strength RSSI value to automatically open the tail gate, so that the accurate opening control requirement of the tail gate is realized.

[0018] As Figure 1 shown, the automobile tail gate automatic opening control system comprises a tail gate controller, a remote key, a vehicle key module and a field strength detection module.

[0019] Among them:

[0020] The remote key communicates with the vehicle key module through wireless signals, and the vehicle key module is connected with the tail gate controller. The field strength detection module is connected with the tail gate controller, and the tail gate controller controls the opening of the tail gate according to the authentication information of the vehicle key module and the field strength RSSI value detected by the field strength detection module.

[0021] The tail gate controller is connected with the memory, and the memory stores the first field strength RSSI threshold and the second field strength RSSI threshold. The memory uses EEPROM to ensure the reliability of data.

[0022] The tail gate controller is connected with the timer, and the timer is used to record the time when the field strength RSSI value reaches the first field strength RSSI threshold or the second field strength RSSI threshold.

[0023] The remote key and the vehicle key module communicate through wireless communication, and the communication is established through low-frequency signal mode and verification is completed. Only when the key verification is passed can the tail gate be opened. Therefore, one of the conditions for opening the tail gate is that the key signal authentication is passed. A vehicle low-frequency antenna is provided on the vehicle side to obtain the corresponding key signal. The vehicle key module mainly processes the received low-frequency signal to realize identity verification. The vehicle key module includes a body controller, which realizes the collection, analysis and verification of the key signal. The body controller is in communication connection with the remote key through the low-frequency antenna to realize the security authentication of the body controller and the remote key.

[0024] The field strength detection module is used to collect the field strength RSSI value between the remote key and the low-frequency antenna. The closer the remote key is to the vehicle, the higher the RSSI value is, otherwise the RSSI value is lower. Therefore, the distance between the user and the vehicle can be determined according to the RSSI value. The RSSI value is collected by the field strength detection module and sent to the tail gate controller. The tail gate controller is mainly used to control the opening and closing of the electric tail gate. Two RSSI thresholds are stored in the EEPROM of the tail gate controller, which can be called the first threshold and the second threshold respectively. The two thresholds correspond to two different positions. After the tail gate controller receives the authentication success signal of the remote key, it starts to detect the field strength value in real time through the field strength detection module. When the field strength value reaches the first threshold for a set time and then becomes the second threshold, the condition for opening the tail gate is met, and the tail gate is opened at this time. The duration can be set and calibrated according to actual needs. The timer provides timing function for the tail gate controller.

[0025] Since the operation scene that the user needs to open the tailgate is generally that the user approaches the tailgate and presses the corresponding tailgate switch to open the tailgate, the scheme simulates the logic of the user manually opening the tailgate, when the user first approaches the tailgate to a certain distance, such as 0.5 m, at this time the corresponding first RSSI threshold value, then stays for a short time, such as 1-2 s; then retreats a certain distance, such as 0.5 m-1 m, at this time the corresponding second RSSI threshold value, when it is detected that the RSSI threshold value meets the first threshold value and the duration meets the set time, and then meets the second RSSI threshold value, it is judged that the opening tailgate condition is met at this time, at this time the tailgate is opened. The first approach and pause can be used as intent recognition, to identify that the user has the demand to open the tailgate, and then retreat to the specified distance to further meet the opening tailgate condition, and the retreat also provides space for the tailgate opening to avoid touching the user in the tailgate opening process.

[0026] For the implementation of the above scheme, distance, RSSI threshold and the like are calibrated and set to achieve, for example, a customer carrying a legal key approaches the tailgate, stops for 2 seconds at 0.5 meters away from the tailgate, and then retreats 1 meter, after the vehicle senses the distance change of the key, the body controller sends a CAN network signal of the tailgate opening to the electric tailgate controller to control the tailgate to automatically open.

[0027] In calibration, the customer carrying the remote controller approaches the tailgate of the vehicle and the field strength RSSI value at a distance of 0.5 m and 1.5 m from the tailgate of the vehicle is stored in the EEPROM, and when the tailgate opening judgment is performed, the real-time RSSI value is compared with the threshold value to judge whether the corresponding opening tailgate logic is met.

[0028] The specific working logic of the above embodiment is that the customer carries the remote controller and approaches the vehicle; within 1.5 meters, the body controller finds the remote controller by driving the rear low-frequency antenna and performs security authentication with the remote controller; after the authentication is passed, it is determined that it is a legal key; the customer continues to approach the tailgate with the legal key to 0.5 meters, the body controller receives the RSSI value greater than or equal to the calibrated RSSI value sent by the remote controller, the customer stands still for 2 seconds, the controller detects that the RSSI value does not change, and then the customer retreats two steps to a distance of 1 meter, at this time the RSSI field strength value sent by the remote controller is less than or equal to the calibrated value. The body controller monitors the change of the RSSI field strength value to meet the software design logic, and then sends an opening signal to the electric tailgate controller PLG, and the PLG drives the electric support rod to automatically open the tailgate.

[0029] The scheme also provides an automobile, which includes the automobile tailgate automatic opening control system in the above embodiment.

[0030] Due to the above scheme, the effects include: increasing the intelligent degree of the customer opening the electric tail door, improving the sense of technology, the opening electric tail door is more convenient, and can replace the kicking function, cancel the kicking sensor to reduce the cost of the vehicle.

[0031] Obviously, the specific implementation of the present application is not limited by the above method, as long as various non-essential improvements are made by adopting the method concept and technical scheme of the present application, which are within the protection scope of the present application.

Claims

1. An automatic opening control system for a rear door of a vehicle, comprising a door controller, a remote key, and a vehicle key module; the remote key communicates with the vehicle key module through wireless signals, and the vehicle key module is connected to the door controller; characterized in that the control system further comprises a field strength detection module, which is connected to the door controller, and the door controller controls the opening of the rear door according to the authentication information of the vehicle key module and the field strength RSSI value detected by the field strength detection module.

2. The automatic opening control system for a rear door of an automobile according to claim 1, wherein: The door controller is connected to a memory, and the memory stores a first field strength RSSI threshold and a second field strength RSSI threshold.

3. The automatic opening control system for a rear door of an automobile according to claim 2, wherein: The door controller is connected to a timer, which is used to record the time when the field strength RSSI value reaches the first field strength RSSI threshold or the second field strength RSSI threshold.

4. The automatic opening control system for a rear door of an automobile according to claim 2, wherein: The memory is an EEPROM.

5. The automatic opening control system for a tailgate of an automobile according to any one of claims 1 to 4, characterized in that: The vehicle key module comprises a body controller, which is connected to the remote key through a low-frequency antenna to realize the security authentication between the body controller and the remote key.

6. An automobile characterized by comprising: The vehicle comprises the automatic opening control system for a rear door of a vehicle according to any one of claims 1-5.

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