PEPS (Passive Entry Passive Start) controller, wireless charging and NFC (Near Field Communication) integrated system and control method

Abstract

The invention provides a PEPS (Passive Entry Passive Start) controller, wireless charging and NFC (Near Field Communication) integrated system, which comprises a vehicle-mounted wireless charging device used for wirelessly charging an NFC key; the NFC module is in communication connection with the vehicle-mounted wireless charging device and is used for executing polling authentication of an NFC key; and the PEPS control unit is in communication connection with the vehicle-mounted wireless charging device and the NFC module and is used for sensing a trigger signal, responding to an NFC key detection request after receiving the trigger signal and controlling the working modes of the vehicle-mounted wireless charging device and the NFC module to be automatically switched. According to the technical scheme, through systematized and integrated control of the PEPS module, the NFC module and the wireless charging module, the cost can be reduced, the use portability of a user is improved, and meanwhile the safety of a vehicle system is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control, and in particular to an integrated system and control method of a PEPS controller, wireless charging and NFC. Background Art

[0002] In the prior art, keyless start is mostly achieved through NFC technology and the NFC function is combined with a car wireless charging device. For keyless start through NFC technology, the principle is that the user carries a mobile device containing an NFC chip, enters the identity authentication information, the NFC reader reads the identity authentication information stored in the NFC chip, and sends an identity authentication signal to the body control unit, the body control unit decodes and verifies the identity authentication information, when the user enters the car, the car controller will check whether the seat is occupied, if a seat is occupied, it will automatically close all the doors and send a warning signal, if the seat is not occupied, the car controller will start the engine and send a start signal, when the user closes the door and starts driving, the car controller will detect the car acceleration and other sensors, and use NFC technology to achieve keyless entry and start of the car.

[0003] Regarding the combination of PEPS (passive entry passive start) and the wireless charging system, its principle can be described as follows: when the PEPS control receives the trigger signal to start searching for the key, it will respond quickly and drive the low-frequency antenna in the car to transmit the LF signal to locate the key. At the same time, through the intelligent bus or hard-wired communication mechanism, the PEPS control will immediately send a signal to the wireless charger to instruct it to suspend the wireless charging function to ensure the pure transmission of the LF signal.

[0004] At present, although the application of NFC system, PEPS system and wireless charging system in combination has made some progress, this model generally relies on cumbersome multiple CAN lines or hard wire connections, which not only greatly increases the cost burden, but also limits the further improvement of operational convenience. With the advancement of technology, the existing two-in-one system can no longer meet the market's urgent demand for high integration and operational convenience. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide an integrated system and control method of a PEPS controller, wireless charging and NFC. Through the integrated control of the PEPS system, NFC system and wireless charging system, a single, highly integrated module can reduce costs, improve user portability, and at the same time improve the safety of the vehicle system.

[0006] The present invention provides an integrated system of a PEPS controller, wireless charging and NFC, the integrated system comprising:

[0007] In-vehicle wireless charging device, used for wireless charging of NFC keys;

[0008] An NFC module, which is in communication with the vehicle-mounted wireless charging device and is used to perform polling authentication of the NFC key;

[0009] The PEPS control unit is communicatively connected with the vehicle-mounted wireless charging device and the NFC module, and is used to sense a trigger signal, respond to an NFC key detection request after receiving the trigger signal, and control the automatic switching of the working modes of the vehicle-mounted wireless charging device and the NFC module.

[0010] In one embodiment of the present invention, the PEPS control unit comprises:

[0011] MCU;

[0012] A low-frequency driving module, connected to the MCU for communication and receiving a signal from the MCU;

[0013] The high-frequency receiving module is communicatively connected with the MCU and is used for sending signals to the MCU.

[0014] In one embodiment of the present invention, the PEPS control unit, the vehicle-mounted wireless charging device and the NFC module are connected via internal SPI, I2C, UART or wireless communication.

[0015] The present invention also provides an integrated control method for PEPS control and wireless charging, which uses the integrated system described in the listed embodiment to perform control, and the method includes:

[0016] When the NFC key is close to the vehicle, the identity information of the NFC key is read;

[0017] The vehicle body control unit receives the identity information, decodes and verifies the identity information, and unlocks the vehicle door if the identity information is correct;

[0018] When the NFC key is placed on the vehicle-mounted wireless charging device, the vehicle-mounted wireless charging device charges the NFC key;

[0019] When the PEPS control unit receives the trigger signal, it responds to the NFC key detection requirement and controls the automatic switching of the working modes of the vehicle-mounted wireless charging device and the NFC module.

[0020] In one embodiment of the present invention, the step of the PEPS control unit controlling the automatic switching of the vehicle-mounted wireless charging device and the NFC module working mode comprises:

[0021] Controlling the vehicle-mounted wireless charging to switch to the NFC module working mode, and the NFC module performs polling authentication of the NFC key;

[0022] If the authentication is completed, the NFC module working mode is turned off and the charging mode of the vehicle-mounted wireless charging device is started.

[0023] In one embodiment of the present invention, when the PEPS control unit receives the trigger signal, the step of responding to the NFC key detection requirement includes:

[0024] When the NFC key enters the car, the brake is pressed and the start button is pressed, the body control unit sends a trigger signal.

[0025] In one embodiment of the present invention, the vehicle body control unit receives the identity information, and the step of decoding and verifying the identity information further includes: if the identity information verification is wrong, re-entering the identity information.

[0026] In one embodiment of the present invention, the step of the PEPS control unit controlling the automatic switching of the working modes of the vehicle-mounted wireless charging device and the NFC module further includes: if the authentication is not completed within a timeout period, repeating the polling authentication of the NFC key.

[0027] In one embodiment of the present invention, after the step of receiving the identity information, decoding and verifying the identity information, and unlocking the door if the identity information is correct, the following steps are further included:

[0028] After the vehicle door is unlocked, the opening state of the main driver's door is detected; if the vehicle door is opened, the body control unit sends a power-on signal.

[0029] In one embodiment of the present invention, if the vehicle door is opened, the step of the vehicle body control unit sending a power-on signal comprises:

[0030] It is determined whether the vehicle doors are closed after being opened. If a vehicle door is not closed, the vehicle body control unit sends a warning signal.

[0031] Beneficial effects: The present invention can not only simplify wiring and reduce costs, but also improve the convenience of user use. The NFC system, PEPS system and wireless charging system are integrated into a single module, realizing the seamless integration of car keys, door locks and charging functions. Users only need to carry NFC-enabled mobile phones or other devices to easily realize keyless entry, start and wireless charging functions, greatly improving the convenience and comfort of using the car.

[0032] In addition, the security of the integrated system of the present invention is also increased. NFC technology itself has high security, and the security of data transmission is ensured through encryption and authentication mechanisms. At the same time, combined with the keyless entry and keyless start functions of the PEPS system, the vehicle can be effectively prevented from being stolen or illegally entered. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0034] Figure 1 A schematic diagram of an integrated system of a PEPS controller, wireless charging and NFC provided by an embodiment of the present invention;

[0035] Figure 2 A schematic flow chart of a control method for an integrated system of a PEPS controller, wireless charging and NFC provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] like Figure 1 As shown, the present invention provides an integrated system of a PEPS controller, wireless charging and NFC, wherein the integrated system includes a PEPS control unit, an on-board wireless charging device and an NFC module, and the PEPS control unit is communicatively connected with the on-board wireless charging device and the NFC module.

[0038] Specifically, the on-board wireless charging device is used to wirelessly charge the NFC key; the NFC module is communicated with the on-board wireless charging device and is used to perform polling authentication of the NFC key; the PEPS control unit is communicated with the on-board wireless charging device and the NFC module and is used to sense a trigger signal, respond to an NFC key detection request after receiving the trigger signal, and control the automatic switching of the working modes of the on-board wireless charging device and the NFC module.

[0039] Specifically, the PEPS control unit includes an MCU, a low-frequency driving module and a high-frequency receiving module. The low-frequency driving module is communicatively connected to the MCU for receiving signals from the MCU; the high-frequency receiving module is communicatively connected to the MCU for sending signals to the MCU.

[0040] In addition, the integrated system is communicatively connected with the vehicle body control unit and also has a smart key sensing function. By transmitting or receiving LF signals and RF signals, the PEPS control unit verifies the identity information of the smart key.

[0041] Specifically, the workflow of the integrated system includes: when a user brings a mobile device containing an NFC key close to the vehicle, the NFC reader / writer outside the vehicle reads the identity information in the NFC key and sends an identity verification message to the body control unit. After receiving the identity information, the body control unit decodes and verifies the identity verification information. If the identity information is correct, the door is unlocked. If the identity information is wrong, the identity verification information is re-entered. After the vehicle is unlocked, it detects that the main driver's door is open and sends a power-on signal. After getting in the car, the user places the mobile device carrying the NFC key within the sensing distance of the on-board wireless charging device. The on-board wireless charging device starts charging when it senses the wireless charging device (the mobile device with the NFC key).

[0042] When the PEPS control unit receives the trigger signal and responds to the NFC key detection request from the car, the on-board wireless charging device automatically switches to NFC mode. In NFC mode, the on-board wireless charging device performs the NFC key polling authentication process to ensure the security and legitimacy of the key. If the NFC key is found after the authentication is completed, the NFC is turned off and the wireless charging state is entered; if the key is not found after the timeout, the search process is repeated.

[0043] Another embodiment of the present invention provides an integrated control method of the integrated system, wherein when an NFC key is close to a vehicle, the identity information of the NFC key is read; the body control unit receives the identity information, decodes and verifies the identity information, and if the identity information is correct, the door is unlocked; when the NFC key is placed on a vehicle-mounted wireless charging device, the vehicle-mounted wireless charging device charges the NFC key; when the PEPS control unit receives a trigger signal, it responds to the NFC key detection requirement and controls the automatic switching of the working modes of the vehicle-mounted wireless charging device and the NFC module.

[0044] Specifically, Figure 2 A control flow diagram provided by an embodiment of the present invention is shown. When a user brings a mobile device containing an NFC key close to a vehicle, the NFC reader / writer outside the vehicle reads the identity information in the NFC key and sends an identity verification message to the body control unit. After receiving the identity information, the body control unit decodes and verifies the identity verification information. If the identity information is correct, the door is unlocked. If the identity information is incorrect, the identity verification information is re-entered. After the vehicle is unlocked, it detects that the main driver's door is open and sends a power-on signal for the vehicle. After getting in the vehicle, the user places the mobile device carrying the NFC key on the vehicle-mounted wireless charging device, and charging begins after the mobile device with the NFC key is sensed.

[0045] When the owner enters the car with an NFC key, steps on the brake, and presses the start button, the PEPS control will automatically search for the key's location and determine whether the key is in the car to help with automatic ignition. In this process, stepping on the brake can be regarded as a trigger signal. When the PEPS control receives the trigger signal and responds to the NFC key detection request issued by the car, the on-board wireless charging device automatically switches to NFC mode. In NFC mode, the on-board wireless charging device performs the polling authentication process of the NFC key to ensure the security and legitimacy of the key. If the NFC key is found after the authentication is completed, the NFC is turned off and the charging state is entered; if it is not found after the timeout, the search process is repeated. The automatic polling authentication of the NFC key effectively improves the safety of the vehicle.

[0046] The integrated system of the present invention can simplify wiring, reduce costs, and at the same time improve the convenience of user use. The NFC module, PEPS module and wireless charging module are integrated into a single system to achieve seamless integration of car keys, door locks and charging functions. Users only need to carry NFC-enabled mobile phones or other devices to easily achieve keyless entry, start and wireless charging functions, greatly improving the convenience and comfort of using the car. The security of the integrated system of the present invention is also increased. NFC technology itself has high security, and the security of data transmission is ensured through encryption and authentication mechanisms. At the same time, combined with the keyless entry and keyless start functions of the PEPS system, the vehicle can be effectively prevented from being stolen or illegally entered.

[0047] The present invention is described in detail above. The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An integrated system of PEPS controller, wireless charging and NFC, characterized in that: The integrated system comprises: In-vehicle wireless charging device, used for wireless charging of NFC keys; An NFC module, which is in communication with the vehicle-mounted wireless charging device and is used to perform polling authentication of the NFC key; The PEPS control unit is communicatively connected with the vehicle-mounted wireless charging device and the NFC module, and is used to sense a trigger signal, respond to an NFC key detection request after receiving the trigger signal, and control the automatic switching of the working modes of the vehicle-mounted wireless charging device and the NFC module.

2. The integrated system of PEPS controller, wireless charging and NFC as claimed in claim 1, characterized in that: The PEPS control unit comprises: MCU; A low-frequency driving module, connected to the MCU for communication and receiving a signal from the MCU; The high-frequency receiving module is communicatively connected with the MCU and is used for sending signals to the MCU.

3. The integrated system of PEPS controller, wireless charging and NFC as claimed in claim 1, characterized in that: The PEPS control unit, the vehicle-mounted wireless charging device and the NFC module are connected via internal SPI, I2C, UART or wireless communication.

4. A method for controlling an integrated system of a PEPS controller, wireless charging and NFC, characterized in that: Using the integrated system as described in claims 1-3 to perform control, the method includes: When the NFC key is close to the vehicle, the identity information of the NFC key is read; The vehicle body control unit receives the identity information, decodes and verifies the identity information, and unlocks the vehicle door if the identity information is correct; When the NFC key is placed on the vehicle-mounted wireless charging device, the vehicle-mounted wireless charging device charges the NFC key; When the PEPS control unit receives the trigger signal, it responds to the NFC key detection requirement and controls the automatic switching of the working modes of the vehicle-mounted wireless charging device and the NFC module.

5. The integrated system control method of a PEPS controller, wireless charging and NFC as claimed in claim 4, characterized in that: The step of the PEPS control unit controlling the automatic switching of the vehicle-mounted wireless charging device and the NFC module working mode comprises: Controlling the vehicle-mounted wireless charging to switch to the NFC module working mode, and the NFC module performs polling authentication of the NFC key; If the authentication is completed, the NFC module working mode is turned off and the charging mode of the vehicle-mounted wireless charging device is started.

6. A method for controlling an integrated system of a PEPS controller, wireless charging and NFC as described in any one of claims 4 to 5, characterized in that: When the PEPS control unit receives the trigger signal, the step of responding to the NFC key detection requirement includes: When the NFC key enters the car, the brake is pressed and the start button is pressed, the body control unit sends a trigger signal.

7. A method for controlling an integrated system of a PEPS controller, wireless charging and NFC as claimed in claim 4, characterized in that: The vehicle body control unit receives the identity information, and the step of decoding and verifying the identity information further includes: if the identity information verification is wrong, re-entering the identity information.

8. The integrated system control method of a PEPS controller, wireless charging and NFC as claimed in claim 5, characterized in that: The step of the PEPS control unit controlling the automatic switching of the working modes of the vehicle-mounted wireless charging device and the NFC module also includes: if the authentication is not completed within a timeout period, repeatedly performing the polling authentication of the NFC key.

9. A method for controlling an integrated system of a PEPS controller, wireless charging and NFC as claimed in claim 4, characterized in that: After the step of receiving the identity information, decoding and verifying the identity information by the vehicle body control unit, and unlocking the door if the identity information is correct, the method further includes: After the vehicle door is unlocked, the opening state of the main driver's door is detected; if the vehicle door is opened, the body control unit sends a power-on signal.

10. A method for controlling an integrated system of a PEPS controller, wireless charging and NFC as claimed in claim 9, characterized in that: If the door is opened, the step of the body control unit sending a power-on signal comprises: It is determined whether the vehicle doors are closed after being opened. If a vehicle door is not closed, the vehicle body control unit sends a warning signal.

Images