CN213649523U - Keyless entry system and vehicle - Google Patents

Abstract

The system comprises a trigger device, a vehicle lock device, a detection antenna and a starting controller, wherein the trigger device, the detection antenna and the vehicle lock device are respectively connected with the starting controller; the triggering device is arranged on a vehicle body of the vehicle and can generate a triggering signal based on vibration received by the vehicle body; the starting controller is used for responding to the trigger signal and unlocking or locking the vehicle through the detection antenna and the vehicle locking device. The beneficial effects of this disclosure are: the use of parts can be reduced, the operation of a user is easy, and the use efficiency of the keyless entry system is improved.

Description

Keyless entry system and vehicle

Technical Field

The present disclosure relates to the field of vehicle technology, and in particular, to a keyless entry system and a vehicle.

Background

With the development of vehicle technology, automobiles are used more and more frequently in daily life, and in order to improve the market competitiveness of the automobiles, the automobiles equipped with the keyless entry system function are gradually changed from high-level optional equipment to standard configuration of the automobiles. The traditional keyless entry starting system mainly comprises a doorknob microswitch, a touch capacitance switch, a back door microswitch, a car key, a low-frequency antenna, a one-key starting switch and a keyless entry starting controller. A user can enter the automobile without a key by touching the capacitive switch on the driving side or the copilot side or can leave the automobile without a key by touching the handle micro-switch on the driving side or the copilot side door. However, the conventional keyless entry starting system requires a large number of system components and a large number of transmission links. And due to the capacitive switching characteristics, a failure phenomenon occurs when a keyless entry or exit function is used in rainy days. Meanwhile, since the door handle microswitch is small and the arrangement and installation position is a fixed area, when a user uses a keyless entry function, the user needs to press a specific position, which results in poor operation convenience for the user.

SUMMERY OF THE UTILITY MODEL

The purpose of the present disclosure is to provide a keyless entry system and a vehicle, which are used for solving the technical problems of complex structure and inconvenient operation of the keyless entry system in the prior art.

To achieve the above object, a first aspect of the present disclosure provides a keyless entry system, comprising:

the device comprises a trigger device, a vehicle lock device, a detection antenna and a starting controller, wherein the trigger device, the detection antenna and the vehicle lock device are respectively connected with the starting controller;

the triggering device is arranged on a vehicle body of a vehicle and can generate a triggering signal based on the vibration of the vehicle body;

and the starting controller is used for responding to the trigger signal and unlocking or locking the vehicle through the detection antenna and the vehicle locking device.

Optionally, the triggering device comprises a transducer for converting elastic waves generated by the vibration into electrical energy to generate the triggering signal.

Optionally, the transducer comprises a piezoceramic wafer acoustic-electric converter.

Optionally, the automobile body main part includes the automobile body sheet metal component, the attached setting of trigger device is in on the inboard of automobile body sheet metal component.

Optionally, the triggering device is attached to an inner side of a body sheet metal part arranged at a door region of the vehicle.

Optionally, the triggering device is attached to the inner side of a vehicle body sheet metal part arranged at the trunk area of the vehicle.

Optionally, the probe antenna comprises a low frequency antenna.

Optionally, the vehicle lock device comprises:

a locking mechanism for performing an unlocking or locking action on the vehicle;

and the vehicle body controller is connected with the starting controller and used for driving the locking mechanism to execute unlocking or locking action on the vehicle according to the control signal of the starting controller.

Optionally, the start controller is in communication connection with the vehicle body controller through a CAN.

A second aspect of the present disclosure provides a vehicle provided with a keyless entry system as described in any of the above embodiments.

According to the technical scheme, the knocking action is detected through the trigger device, so that a corresponding trigger signal is generated, the trigger controller receives the trigger signal and outputs a first control signal for driving the detection antenna to transmit a detection signal, the detection antenna transmits the detection signal according to the detection signal to search for the car key and receives a radio frequency signal fed back by the car key, the start controller judges whether the car key transmitting the radio frequency signal is a legal key of the car or not according to the radio frequency signal, and when the car key is the legal key of the car, a second control signal for controlling the car lock device to unlock or lock the car is output according to the current state of the car lock device, so that the car is unlocked or locked. Therefore, the keyless entry system and the vehicle can complete keyless entry or exit only by detecting the knocking action, can reduce the use of parts, are easy to operate by a user, and improve the use efficiency of the keyless entry system.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 illustrates a schematic diagram of a prior art keyless entry system;

fig. 2 is a schematic structural diagram illustrating a keyless entry system provided by an embodiment of the present disclosure;

fig. 3 shows a schematic diagram of a keyless entry system provided by an embodiment of the disclosure.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

Fig. 1 shows a schematic structural diagram of an existing keyless entry system, as shown in fig. 1, the existing keyless entry system includes a door handle microswitch, a touch capacitive switch, a back door microswitch, a smart key, a low frequency antenna, a one-key start switch and a keyless entry start controller (PEPS controller), and the keyless entry principle thereof is as follows: when the power mode of the whole vehicle is OFF, a user carries an intelligent key to pull a door handle in an effective area outside the vehicle at a driving side or a secondary driving side, a touch capacitance switch at the inner side of the door handle is triggered, the PEPS controller drives a low-frequency antenna at the corresponding driving side or the secondary driving side according to the triggered driving side or the secondary driving side touch capacitance switch to detect whether the intelligent key exists outside the vehicle, if the PEPS controller detects that the intelligent key exists outside the vehicle and the intelligent key is successfully authenticated, an unlocking request of four doors of the vehicle is sent to a BCM (vehicle body controller) through a CAN bus, and if the PEPS controller does not detect that the legal intelligent key exists outside the vehicle, other operations are not carried out. The existing keyless entry principle is as follows: when the power mode of the whole vehicle is OFF, a user carries an intelligent key to press a door handle locking microswitch in an effective area outside the vehicle at a driving side or a copilot side, a PEPS controller drives a corresponding low-frequency antenna at the driving side or the copilot side according to a pressed microswitch button to detect whether the intelligent key exists outside the vehicle and sends a corresponding microswitch pressing message, if the PEPS controller detects that the intelligent key exists outside the vehicle and the intelligent key is successfully authenticated, a vehicle door locking request is sent to a BCM through a CAN bus, and if the PEPS controller does not detect that a legal intelligent key exists outside the vehicle, the operation CAN be stopped.

Therefore, for the existing keyless entry system, a capacitance switch or a microswitch needs to be installed at a specific position, and more connecting wire harnesses and electrical connectors need to be arranged for integrating the capacitance switch and the microswitch, so that the structure of the vehicle is extremely complicated. Meanwhile, the user can only start the key-free mode by pressing or touching the capacitive switch or the microswitch arranged on the specific position, and under certain conditions, such as in a garage or at night, the position of the capacitive switch or the microswitch is inconvenient for the user to observe, the accurate pressing of the user is influenced, and the user experience of the user for key-free entering is reduced. Moreover, due to the characteristics of the capacitive switch, the keyless entry or exit function may be disabled in rainy weather, resulting in user unavailability.

Based on the technical problem, the present disclosure provides a keyless entry system and a vehicle, wherein a triggering device is used to detect a knocking action of a user on a vehicle door, so as to generate a corresponding triggering signal, a starting controller receives the triggering signal, outputs a first control signal for driving a detection antenna to transmit a detection signal, the detection antenna transmits the detection signal according to the detection signal to search for a vehicle key, and receives a radio frequency signal fed back by the vehicle key, the starting controller judges whether the vehicle key transmitting the radio frequency signal is a legal key of the vehicle according to the radio frequency signal, and outputs a second control signal for controlling the vehicle lock device to unlock or lock the vehicle according to a current state of the vehicle lock device when the vehicle key is the legal key of the vehicle, so as to unlock or lock the vehicle. Not only can effectively reduce the installation complexity of vehicle, moreover under special operating mode, can both guarantee that the user can effectively use keyless entry system like night or rainy day, improved keyless entry system's availability factor.

According to an embodiment of the present disclosure, a keyless entry system is provided, and fig. 2 shows a schematic structural diagram of the keyless entry system provided by the embodiment of the present disclosure, as shown in fig. 2, the keyless entry system includes a triggering device, a detection antenna, a vehicle lock device and a start controller, which are disposed on a vehicle, and the triggering device, the detection antenna and the vehicle lock device are respectively connected to the start controller.

The triggering device is arranged on a vehicle body of a vehicle and can generate a triggering signal based on vibration of the vehicle body; the starting controller is used for responding to the trigger signal and unlocking or locking the vehicle through the detection antenna and the vehicle locking device

Here, the user strikes the body of the vehicle to trigger the trigger device to generate a trigger signal, and the start controller drives the detection antenna to transmit a detection signal when receiving the trigger signal, so as to search whether a legal vehicle key exists in a preset area range. The searching process specifically includes that the detection antenna transmits a detection signal, and when the vehicle key receives the detection signal, a radio frequency signal is transmitted. The detection antenna receives the radio frequency signal and sends the radio frequency signal to the starting controller, and the starting controller judges whether the vehicle key is a legal vehicle key or not according to the comparison result of the key information in the radio frequency signal and the preset key information. That is, when the key information in the rf signal matches the preset key information, the car key is a legal car key. And when the starting controller determines that the searched vehicle key is a legal vehicle key, unlocking or locking the vehicle according to the current switch state of the vehicle lock device. Specifically, when the current switch state of the vehicle lock device is the locked state, the vehicle is unlocked, and when the current switch state of the vehicle lock device is the unlocked state, the vehicle is locked.

Therefore, a user can complete the function of entering or leaving without a key only by knocking the vehicle body, and does not need to touch or press a capacitance switch or a microswitch on a specific position, so that the efficiency of using the keyless entry system is improved.

It should be understood that the keyless entry system may be comprised of only the triggering device, the vehicle locking device, the detection antenna, and the activation controller.

Here, the keyless entry system provided by the present disclosure only needs to be composed of the triggering device, the vehicle lock device, the detection antenna and the start controller, and does not need other components, thereby saving the use of devices compared to the prior art, and reducing the connection of devices, thereby reducing the installation and wiring of parts in the vehicle door area or the vehicle door handle area. If the capacitor switch and the microswitch are not required to be integrated inside, the connecting wire harness and the electrical connector corresponding to the handle are eliminated, so that the outer handle is directly evolved into a product with a pure mechanical structure.

In an implementable embodiment, the triggering device comprises a transducer for converting the vibration generated elastic waves into electrical energy to generate the triggering signal.

Here, since elastic waves exist in any object, when the object is touched by the outside, vibration propagates to the periphery in the form of elastic waves. The mechanical vibration below the audio frequency, the sound in the audio frequency range and the ultrasonic wave beyond the audio frequency are medium wave phenomena, relative to light and electromagnetic waves, the wave phenomena are called elastic waves, the propagation speed of the elastic waves is low and the wavelength is short relative to the propagation speed of the electromagnetic waves, and the propagation time difference can be measured. The transducer can then convert acoustic energy from a user tapping the vehicle into a voltage signal that is transmitted to the start controller as a trigger signal. And after the starting controller detects that the voltage signal output by the transducer reaches a preset threshold value, the detection antenna is driven to search for the car key in a preset area range.

In one implementable embodiment, the transducer comprises a piezoceramic wafer acousto-electric converter.

Here, the piezoelectric ceramic plate acoustic-electric converter is used for converting acoustic energy into electric energy, and belongs to a receiving transducer. When a user knocks the sheet metal part of the automobile body main body, the piezoelectric ceramic piece acoustic-electric converter converts acoustic energy generated by vibration of the sheet metal part into electric energy.

It should be understood that the triggering device is preferably a transducer, but other devices that can detect a tapping action by a user may be used, such as a pressure sensor.

In one embodiment, the vehicle body comprises a vehicle body sheet metal part, and the trigger device is attached to the inner side of the vehicle body sheet metal part.

Here, the transducer is attached to be set up on the inboard of automobile body sheet metal component, and when the user knocked the automobile body sheet metal component, the elastic wave that the automobile body sheet metal component vibration produced can fully be absorbed by the transducer to improve the success rate of triggering of transducer.

It should be understood that the transducer may be arranged on the inside of a sheet metal part attached to the body of a vehicle arranged at the door region of the vehicle, in particular the door region of the driver side. The triggering device can also be attached to the inner side of a vehicle body sheet metal part arranged at the trunk area of the vehicle and used for starting the trunk without a key.

In one implementable embodiment, the detection antenna comprises a low frequency antenna.

The low-frequency antenna transmits a low-frequency signal under the driving of the starting controller, the vehicle key transmits a high-frequency signal after receiving the low-frequency signal, and the low-frequency antenna receives the high-frequency signal transmitted by the vehicle key and transmits the high-frequency signal to the starting controller.

In one implementable embodiment, the vehicle lock device comprises:

the locking mechanism is used for unlocking or locking the vehicle;

and the vehicle body controller is connected with the starting controller and is used for driving the locking mechanism to execute unlocking or locking action on the vehicle according to the control signal of the starting controller.

Here, the locking mechanism may include a latching relay, an unlocking relay, a door lock, and a door lock motor. The input end of the latching relay is connected with a power supply, the output end of the latching relay is connected with a door lock motor of a door lock, and the control end of the latching relay is connected with the output end of a vehicle body controller; the input end of the unlocking relay is connected with a power supply, the output end of the unlocking relay is connected with a door lock motor of a door lock, and the control end of the unlocking relay is connected with the output end of a vehicle body controller; the door lock motor is used for driving the door lock to unlock or lock.

It should be understood that the locking mechanism is one possible configuration and that other configurations are within the scope of the present disclosure.

The operation of the keyless entry system of the vehicle proposed by the present company will be described in detail with reference to fig. 3.

Fig. 3 shows a schematic diagram of a keyless entry system according to an embodiment of the disclosure, as shown in fig. 3, a user taps a door of a driving side, a trigger transducer outputs a trigger signal (voltage signal) to a start controller, the start controller receives the voltage signal and drives a low frequency antenna to transmit a low frequency signal (LF) to search for a legal vehicle key, the vehicle key receives the low frequency signal and transmits a high frequency signal (RF), the start controller receives the high frequency signal and determines whether key information in the radio frequency signal matches preset key information according to the high frequency signal, when the key information matches the preset key information, it is determined that a legal vehicle key is searched, when the start controller determines that a legal vehicle key is searched, a corresponding control signal is output according to a current switch state fed back by a vehicle lock device, and after a vehicle Body Controller (BCM) receives the control signal through a bus (CAN), and controlling the locking mechanism to unlock or lock. Specifically, when the current switch state of the vehicle lock device is the locked state, the vehicle is unlocked, and when the current switch state of the vehicle lock device is the unlocked state, the vehicle is locked.

The specific control process is as follows:

if the current switch state feedback is the locking state, the starting controller sends a PKEDoorUnlockCmd (0 x 1) vehicle door unlock command to the CAN network, and the vehicle body controller receives the PKEDoorUnlockCmd (0 x 1) vehicle door unlock command and starts to drive the unlocking relay for 200ms to realize vehicle unlocking.

And if the current switch state feedback is in an unlocking state, sending a PKEDoorLockCmd (0 x 1) PKE door lock instruction to the CAN network, and starting to drive an unlocking relay for 200ms to realize vehicle locking when the vehicle body controller receives the PKEDoorLockCmd (0 x 1) PKE door lock instruction.

In the following, the application scenario of the keyless entry system proposed by the present disclosure is exemplified by several examples:

example 1

The method comprises the steps that a user uses a vehicle under daily conditions, the vehicle is in a locking or unlocking state, the user knocks a door sheet metal part on the driving side of the vehicle by carrying a legal vehicle key of the vehicle, a transducer outputs a corresponding trigger signal (voltage signal) to a starting controller (PEPS) under the trigger of elastic waves generated by the sheet metal part, the starting controller controls a low-frequency antenna to transmit a detection signal (low-frequency signal) when receiving the trigger signal, the vehicle key transmits a radio-frequency signal (high-frequency signal) when receiving the low-frequency signal, the starting controller receives the radio-frequency signal through the low-frequency antenna and judges whether the vehicle key transmitting the radio-frequency signal is the legal vehicle key or not according to secret key information in the radio-frequency signal, and when the vehicle key is the legal vehicle key, the starting controller controls a vehicle locking device to unlock or lock the vehicle according to the current on-off state of the vehicle locking device, thereby realizing the automatic unlocking or locking of the vehicle.

Example two

When a user uses a vehicle at night or in a parking lot, because the surrounding environment of the vehicle is not illuminated or the light is insufficient, at the moment, the user directly strikes a door sheet metal part on a driving side, the transducer outputs a corresponding trigger signal (voltage signal) to a starting controller (PEPS) under the trigger of elastic waves generated by the sheet metal part, the starting controller controls a low-frequency antenna to transmit a detection signal (low-frequency signal) when receiving the trigger signal, when a vehicle key receives the low-frequency signal, the vehicle key transmits a radio-frequency signal (high-frequency signal), the starting controller receives the radio-frequency signal through the low-frequency antenna and judges whether the vehicle key transmitting the radio-frequency signal is a legal vehicle key according to key information in the radio-frequency signal, and when the vehicle key is the legal vehicle key, the starting controller controls a vehicle lock device to unlock or lock the vehicle according to the current switch state of the vehicle lock device, therefore, the keyless entry system is assisted to a user under the condition of no illumination or weak light.

Example three

The user uses the vehicle under the condition that the user can not take out the vehicle key because both hands are full of articles, at the moment, the user can knock the vehicle door metal plate on the driving side through legs or other parts of the body, the transducer outputs a corresponding trigger signal (voltage signal) to the starting controller (PEPS) under the trigger of elastic waves generated by the metal plate part, the starting controller controls the low-frequency antenna to transmit a detection signal (low-frequency signal) when receiving the trigger signal, the vehicle key sends a radio-frequency signal (high-frequency signal) when receiving the low-frequency signal, the starting controller receives the radio-frequency signal through the low-frequency antenna and judges whether the vehicle key sending the radio-frequency signal is a legal vehicle key or not according to secret key information in the radio-frequency signal, and when the vehicle key is the legal vehicle key, the starting controller controls the vehicle lock device to unlock or lock the vehicle according to the current switch state of the vehicle lock device, thereby realizing the automatic unlocking or locking of the vehicle. Compared with the existing keyless entry system, the keyless starting can be completed without touching or pressing a switch at a specific position by a user.

In another exemplary embodiment, there is also provided a vehicle provided with the keyless entry system as recited in any of the above embodiments.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A keyless entry system comprising:

the device comprises a trigger device, a vehicle lock device, a detection antenna and a starting controller, wherein the trigger device, the detection antenna and the vehicle lock device are respectively connected with the starting controller;

the triggering device is arranged on a vehicle body of a vehicle and can generate a triggering signal based on the vibration of the vehicle body;

and the starting controller is used for responding to the trigger signal and unlocking or locking the vehicle through the detection antenna and the vehicle locking device.

2. The keyless entry system of claim 1 wherein the triggering means comprises a transducer for converting the vibration generated elastic wave into electrical energy to generate the triggering signal.

3. The keyless entry system of claim 2 wherein the transducer comprises a piezoceramic wafer acoustic-electric transducer.

4. The keyless entry system of claim 1 wherein the body comprises a body sheet metal part, the attachment of the trigger device being disposed on an inner side of the body sheet metal part.

5. The keyless entry system of claim 4 wherein the trigger is affixed to an inner side of a body sheet metal member disposed at a door region of the vehicle.

6. The keyless entry system of claim 4 wherein the trigger is affixed to an inner side of a body sheet metal member disposed at a trunk area of the vehicle.

7. The keyless entry system of any one of claims 1 to 5 wherein the probe antenna comprises a low frequency antenna.

8. The keyless entry system according to any one of claims 1 to 5 wherein the lock device comprises:

a locking mechanism for performing an unlocking or locking action on the vehicle;

and the vehicle body controller is connected with the starting controller and used for driving the locking mechanism to execute unlocking or locking action on the vehicle according to the control signal of the starting controller.

9. The keyless entry system of claim 8 wherein the start controller is in CAN communication with the body controller.

10. A vehicle characterized in that a keyless entry system according to any one of claims 1 to 9 is provided.

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