A system and method for welcome control of a unified smart key and a Bluetooth key

Abstract

The application discloses a welcome control system and method applied to a unified intelligent key and a Bluetooth key, which comprises a TBOX module, a Bluetooth key, a keyless entry module, an intelligent key and a vehicle body control module. The TBOX module is used for interconnecting with the Bluetooth key and positioning the Bluetooth key, is connected with the vehicle body control module through CAN, and realizes control on the vehicle. The Bluetooth key is interconnected with the vehicle by pairing with the Bluetooth module in the TBOX and establishing a connection with the vehicle. The keyless entry module is used for positioning the intelligent key, unified management of the intelligent key and logical judgment of the welcome function. The intelligent key is a portable device and is one of the legal authorized devices for entering the vehicle, and is used for realizing positioning of the intelligent key in cooperation with the keyless entry module. The vehicle body control module is used for executing the unlocking and locking actions of the whole vehicle and the opening and closing actions of the welcome light, and simultaneously detecting and feeding back the lock state of the whole vehicle and the door state light information. The application can improve the accuracy of the welcome function and the safety of the automobile.

Description

TECHNICAL FIELD

[0001] The application relates to a welcome control system and method for unified smart keys and Bluetooth keys and belongs to the technical field of artificial intelligence. BACKGROUND

[0002] At present, the market demand for automobile intelligence is increasing, and the popularity rate of a passive entry passive start (PEPS) system is increasing. The PEPS system brings great convenience to customers, and a traditional PEPS system realizes the entering and starting functions of a vehicle through a special smart key. With the popularity of the interconnection of mobile phones and vehicles, a smart phone can also be used to replace a smart key for the entering and starting of a vehicle. The synchronous use of smart keys and Bluetooth keys greatly facilitates customers. However, since the functions realized by the two are completely the same, it is necessary to uniformly manage the smart keys and the Bluetooth keys. SUMMARY

[0003] The application aims at the defects and deficiencies of the prior art and provides a welcome control system and method for unified smart keys and Bluetooth keys, which can improve the accuracy of the welcome function and the safety of the automobile.

[0004] The application adopts the technical scheme that a welcome control system for unified smart keys and Bluetooth keys comprises a TBOX module, a Bluetooth key, a keyless entry module, a smart key and a body control module.

[0005] The TBOX module is used for interconnecting with the Bluetooth key and positioning the Bluetooth key, is connected with the body control module through CAN and realizes the control of the vehicle.

[0006] The Bluetooth key is a Bluetooth portable device such as a mobile phone or a special Bluetooth key, and the Bluetooth key is interconnected with the TBOX through pairing and is connected with the vehicle.

[0007] The keyless entry module is used for the positioning of the smart key, the unified management of the smart key and the logical judgment of the welcome function.

[0008] The smart key is a portable device and is one of the legal authorized devices for entering the vehicle and is used for realizing the positioning of the smart key in cooperation with the keyless entry module.

[0009] The body control module is used for executing the unlocking and locking actions of the whole vehicle and the opening and closing actions of the welcome light, simultaneously detecting and feeding back the lock state of the whole vehicle and the door state light information.

[0010] Furthermore, the keyless entry module of the present invention locally detects the location of the smart key via CAN or Bluetooth key position information, making a comprehensive determination to execute the welcome function. The TBOX module locates the Bluetooth key position in the following zones: A: Welcome light zone, B: Away from locking zone, C: Near unlocking zone, and D: Inside vehicle zone. The TBOX module uses multiple Bluetooth antennas to detect the Bluetooth key's position in real time and transmits this position to the keyless entry module via the CAN bus. The keyless entry module also detects the smart key's position in real time using multiple low-frequency antennas and similarly divides the position into four zones: A, B, C, and D.

[0011] Furthermore, the keyless entry module of the present invention uses a combination of the four-zone position of the Bluetooth key reported by the TBOX module and the four-zone position of the locally detected smart key to perform logical control of the welcome function. It also uses the lock and door status reported by the body control module to enable or disable corresponding functions. These include locking when moving away, unlocking when moving closer, and turning the welcome light on and off.

[0012] Furthermore, the keyless entry module of the present invention requires real-time key position signals. Smart keys obtain their position locally, while Bluetooth keys obtain their position via CAN signals. Acquiring position requires the CAN network to remain awake, so the Bluetooth key position reported by the TBOX module is used as a condition for the keyless entry module to remain awake.

[0013] Furthermore, the Bluetooth key location reported by the TBOX module of the present invention serves as the network wake-up condition for the keyless entry module, ensuring that the entire vehicle can enter low-power mode. A maximum key location time is defined. When the key is located near the vehicle for more than the maximum time T (e.g., 15 minutes), the welcome function is automatically disabled and the network is released.

[0014] Furthermore, once the present invention locates that the smart key or Bluetooth key is in the car, the welcome function is turned off, and the door state change or lock state change can be triggered again.

[0015] Furthermore, the present invention defines the keyless entry module and the body control module as two independent modules, and the two modules can also be merged. All functions of the welcome function are locally controlled without sending CAN command control.

[0016] The present invention also provides an implementation method for a unified smart key and Bluetooth key welcome control system. The method uses the Bluetooth key and the smart key to jointly manage the welcome function, realizes information interconnection and positioning with the Bluetooth key through the TBOX module, and feeds back the Bluetooth key position in real time through the CAN bus. The smart key is positioned in real time through the keyless entry module, and then executes the corresponding welcome function according to a specific logic based on the Bluetooth key position fed back by the TBOX module and the locally detected smart key position.

[0017] To ensure real-time CAN signal position feedback, this invention uses the Bluetooth location reported by the TBOX module as a condition for maintaining network wakeup in the keyless entry module. Furthermore, to ensure network wakeup for the entire vehicle, a maximum key location time is defined. If the key remains near the vehicle for longer than this time, the welcome function is disabled and the network is released.

[0018] Beneficial effects:

[0019] 1. The present invention realizes the unified management of smart keys and Bluetooth keys, greatly improving the accuracy of the welcome function and the safety of the car.

[0020] 2. The present invention can define and set the maximum time for locating the key. When the locating key exceeds the maximum time T at the vehicle's location, the welcome function will be automatically turned off, thus releasing network resources.

[0021] 3. The present invention can define the keyless entry module and the body control module as two independent modules, or merge the two modules. All functions of the welcome system are controlled locally without sending CAN command control, thus meeting the real-time nature of CAN signal position feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the architecture diagram of the welcome control system with unified logic for the smart key and Bluetooth key of the present invention.

[0023] Figure 2 This is a schematic diagram of the definition of the welcoming functional area of ​​the present invention.

[0024] Figure 3 This is a flowchart of the locking function of the present invention.

[0025] Figure 4 This is a flowchart of the unlocking function of the present invention.

[0026] Figure 5 This is a flow chart of the welcome light on and off function of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, the present invention provides a welcome control system for a unified smart key and Bluetooth key, which includes a TBOX module, a Bluetooth key, a keyless entry module, a smart key and a body control module.

[0029] The TBOX module is used to interconnect with the Bluetooth key and locate the Bluetooth key. It is connected to the body control module via CAN to achieve vehicle control.

[0030] The Bluetooth key is a Bluetooth portable device, such as a mobile phone or a dedicated Bluetooth key. The Bluetooth key establishes a connection with the vehicle by pairing with the Bluetooth module in the TBOX.

[0031] The keyless entry module is used for the positioning of smart keys, unified management of smart keys and logical judgment of the welcome function.

[0032] The smart key is a portable device that is one of the legally authorized devices for entering the vehicle. It works with the keyless entry module to locate the smart key.

[0033] The body control module is used to execute the unlocking and opening and closing actions of the entire vehicle and the welcome light, while detecting and feeding back the lock status of the entire vehicle and the door status light information.

[0034] Furthermore, the keyless entry module of the present invention locally detects the location of the smart key via CAN or Bluetooth key position information, making a comprehensive determination to execute the welcome function. The TBOX module locates the Bluetooth key position in the following zones: A: Welcome light zone, B: Away from locking zone, C: Near unlocking zone, and D: Inside vehicle zone. The TBOX module uses multiple Bluetooth antennas to detect the Bluetooth key's position in real time and transmits this position to the keyless entry module via the CAN bus. The keyless entry module also detects the smart key's position in real time using multiple low-frequency antennas and similarly divides the position into four zones: A, B, C, and D.

[0035] Furthermore, the keyless entry module of the present invention uses a combination of the four-zone position of the Bluetooth key reported by the TBOX module and the four-zone position of the locally detected smart key to perform logical control of the welcome function. It also uses the lock and door status reported by the body control module to enable or disable corresponding functions. These include locking when moving away, unlocking when moving closer, and turning the welcome light on and off.

[0036] Furthermore, the keyless entry module of the present invention requires real-time key position signals. Smart keys obtain their position locally, while Bluetooth keys obtain their position via CAN signals. Acquiring position requires the CAN network to remain awake, so the Bluetooth key position reported by the TBOX module is used as a condition for the keyless entry module to remain awake.

[0037] Furthermore, the Bluetooth key location reported by the TBOX module of the present invention serves as the network wake-up condition for the keyless entry module, ensuring that the entire vehicle can enter low-power mode. A maximum key location time is defined. When the key is located near the vehicle for more than the maximum time T (e.g., 15 minutes), the welcome function is automatically disabled and the network is released.

[0038] Furthermore, once the present invention locates that the smart key or Bluetooth key is in the car, the welcome function is turned off, and the door state change or lock state change can be triggered again.

[0039] Furthermore, the present invention defines the keyless entry module and the body control module as two independent modules, and the two modules can also be merged. All functions of the welcome function are locally controlled without sending CAN command control.

[0040] The present invention also provides an implementation method for a unified smart key and Bluetooth key welcome control system. The method uses the Bluetooth key and the smart key to jointly manage the welcome function, realizes information interconnection and positioning with the Bluetooth key through the TBOX module, and feeds back the Bluetooth key position in real time through the CAN bus. The smart key is positioned in real time through the keyless entry module, and then executes the corresponding welcome function according to a specific logic based on the Bluetooth key position fed back by the TBOX module and the locally detected smart key position.

[0041] To ensure real-time CAN signal position feedback, this invention uses the Bluetooth location reported by the TBOX module as a condition for maintaining network wakeup in the keyless entry module. Furthermore, to ensure network wakeup for the entire vehicle, a maximum key location time is defined. If the key remains near the vehicle for longer than this time, the welcome function is disabled and the network is released.

[0042] like Figure 2 As shown, the present invention defines the CAN signal of the Bluetooth position fed back by the TBOX module according to the welcome area definition: the specific location classification includes the following:

[0043] 0x0: Disconnect Bluetooth connection

[0044] 0x1: Outside area A

[0045] 0x2: Area A

[0046] 0x3: Area B

[0047] 0x4: C area

[0048] 0x5: D area

[0049] Local smart key detection is also divided into area A, area B, area C, area D and the area where no key is detected.

[0050] like Figure 3 As shown, the away locking function of the present invention is that all doors are closed through feedback from the body control module, and the lock state is unlocked. The keyless entry module detects that the last key moves from the B / C area to the A area or disappears, then the away locking function is triggered, and the whole vehicle locking instruction is sent to the body control module via CAN, and the body control module executes the whole vehicle locking.

[0051] The Bluetooth key's location signal is acquired via CAN signals, so the system must maintain network wakeup when the Bluetooth key is detected near the vehicle. If the door lock is detected as locked, the proximity unlocking logic is activated. During the entire distance lock function, if the lock state is detected as locked or the door is open, the distance lock function is directly disabled.

[0052] like Figure 4 As shown, the proximity unlocking function of the present invention is that all doors are closed through feedback from the body control module, and the lock state is locked. The keyless entry module detects that the first key enters area C from outside area A or area A, then triggers the proximity unlocking function, sends an unlocking command to the body control module via CAN, and the body control module executes the unlocking of the entire vehicle.

[0053] The Bluetooth key's location signal is acquired via CAN signals, so the network must remain awake when the Bluetooth key is detected near the vehicle. When the proximity unlock function is disabled, the Bluetooth location signal is no longer needed, and the network must be released to ensure it can enter sleep mode. During the proximity unlock function, if the lock state changes to unlocked or the door is opened, the proximity unlock function is immediately disabled.

[0054] like Figure 5 As shown, the welcome light turning-on function of the present invention is that all doors are closed through feedback from the body control module, and the lock state is locked. The keyless entry module detects that the first key enters the A / B / C area from outside the A area, then the welcome light turning-on function is triggered, and the welcome light turning-on instruction is sent to the body control module via CAN, and the body control module executes the welcome light turning-on function.

[0055] The welcome light off function of the present invention is that all doors are closed through feedback from the body control module, and the lock state is locked. The keyless entry module detects that there is no key in the A / B / C area, then the welcome light off function is triggered after a delay of a period of time (such as 5s), and the welcome light off instruction is sent to the body control module via CAN, and the body control module executes the welcome light off function.

[0056] The Bluetooth key's location signal is acquired via CAN signals, so the network wake-up function must be maintained when the Bluetooth key is detected near the vehicle. After disabling the welcome function, the Bluetooth location signal is no longer needed, and the network must be released to ensure the vehicle can enter sleep mode. During the welcome light function, if the lock state changes to unlocked or the door is opened, the welcome light function is disabled.

[0057] To ensure the vehicle can enter low-power mode, this invention defines a maximum key location time, T. When a key is detected near the vehicle, T begins counting. When T expires, the welcome key finder function is disabled. If a door or lock status change is detected, T is reset. After the welcome key finder function is disabled, if the Bluetooth location is acquired via CAN, the network is released, allowing the network to sleep.

[0058] The technical process described above is merely a preferred embodiment of the present invention and does not represent all details of the present invention. Any modifications, equivalent substitutions, and improvements made by any person skilled in the art within the technical scope disclosed by the present invention and within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A unified smart key and Bluetooth key welcome control system, characterized by: The system includes a TBOX module, a Bluetooth key, a keyless entry module, a smart key and a body control module; The TBOX module is used to interconnect with the Bluetooth key and locate the Bluetooth key. It is connected to the body control module via CAN to achieve vehicle control. The Bluetooth key is a Bluetooth portable device, i.e. a mobile phone or a dedicated Bluetooth key. The Bluetooth key establishes a connection with the vehicle by pairing with the Bluetooth module in the TBOX. The keyless entry module is used for smart key positioning, unified smart key management, and logical judgment of the welcome function; The smart key is a portable device that is one of the legally authorized devices for entering the vehicle and works with the keyless entry module to locate the smart key; The body control module is used to execute the unlocking and opening and closing actions of the entire vehicle and the welcome light, and at the same time detect and feedback the lock status of the entire vehicle and the door status light information; The keyless entry module needs to obtain the key position signal in real time. The smart key obtains the position locally, and the Bluetooth key obtains the position through the CAN signal. When obtaining the position, the CAN network needs to remain awake. Therefore, the Bluetooth key position fed back by the TBOX module needs to be used as a condition for the keyless entry module network to remain awake.

2. The unified smart key and Bluetooth key welcome control system according to claim 1, characterized in that: The keyless entry module locally detects the position of the smart key through CAN or Bluetooth key position, and comprehensively determines to execute the welcome function; the TBOX module locates the Bluetooth key position including the following areas: A: welcome light area, B: away from the locking area, C: close to the unlocking area, D: inside the car area. The TBOX module uses multiple Bluetooth antennas to detect the position of the Bluetooth key in real time and feeds the position back to the keyless entry module through the CAN bus. The keyless entry module detects the position of the smart key in real time through multiple low-frequency antennas, and also divides the position into four areas A, B, C, and D.

3. The unified smart key and Bluetooth key welcome control system according to claim 1, characterized in that: The keyless entry module performs logical control of the welcome function based on the combined judgment of the four area positions of the Bluetooth key fed back by the TBOX module and the four area positions of the smart key detected locally. At the same time, it determines the opening and closing of the corresponding functions based on the lock status and door status fed back by the body control module. The corresponding functions include locking when away, unlocking when approaching, and turning the welcome light on and off.

4. The unified smart key and Bluetooth key welcome control system according to claim 1, characterized in that: The Bluetooth key position fed back by the TBOX module serves as the network wake-up condition for the keyless entry module. It is necessary to ensure that the entire vehicle can enter low power consumption and define the maximum key positioning time. When the positioning key exceeds the maximum time T in the vehicle accessories, the welcome function is automatically turned off and the network is released. T is 15 minutes.

5. The unified smart key and Bluetooth key welcome control system according to claim 1, characterized in that: Once the system locates the smart key or Bluetooth key in the car, the welcome function is turned off and can be triggered again when the door status or lock status changes.

6. The unified smart key and Bluetooth key welcome control system according to claim 1, characterized in that: The keyless entry module and the body control module are defined as two independent modules, and the two modules can also be merged. All functions of the welcome system are controlled locally without sending CAN commands.

7. A method for implementing a unified smart key and Bluetooth key welcome control system, characterized by: The method uses a Bluetooth key and a smart key to jointly manage the welcome function. The TBOX module and the Bluetooth key are interconnected and positioned, and the Bluetooth key position is fed back in real time via the CAN bus. The keyless entry module locates the smart key in real time. The corresponding welcome function is then executed according to a specific logic based on the Bluetooth key position fed back by the TBOX module and the smart key position detected locally. The method uses the Bluetooth location fed back by the TBOX module as the network wake-up maintenance condition of the local keyless entry module and defines a maximum key positioning time. When the key exceeds the maximum time near the vehicle, the welcome function will be turned off and the network will be released.

8. The method for implementing a unified smart key and Bluetooth key welcome control system according to claim 7, characterized in that: The location signal of the Bluetooth key is obtained through the CAN signal. When the Bluetooth key is detected near the vehicle, the network is kept awake. After the welcome function is turned off, the Bluetooth location signal is no longer needed, the network is released, and the entire vehicle enters sleep. During the execution of the welcome light function, if it is detected that the lock state changes to unlocked or the door is opened, the welcome light function is turned off.

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