CN111694297A - Intelligent key controller, intelligent key control method and system - Google Patents
Intelligent key controller, intelligent key control method and system Download PDFInfo
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- CN111694297A CN111694297A CN201910195441.4A CN201910195441A CN111694297A CN 111694297 A CN111694297 A CN 111694297A CN 201910195441 A CN201910195441 A CN 201910195441A CN 111694297 A CN111694297 A CN 111694297A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25186—Bluetooth
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention provides an intelligent key controller, an intelligent key control method and an intelligent key control system, wherein the intelligent key controller comprises: the high-frequency receiving module and the micro control unit are integrated on the circuit board, and the high-frequency receiving module is used for receiving an electronic key signal and sending the electronic key signal to the micro control unit; and the micro control unit is used for correspondingly processing the electronic key signal and transmitting the processed electronic key signal to a controller local area network of the vehicle. The invention can effectively enrich the functions of the intelligent key system controller, and avoid external electromagnetic interference while the functions are complete, and the micro control unit performs uniform processing and transmission on the electronic key signals, thereby avoiding occupying excessive controller local area network resources.
Description
Technical Field
The invention relates to the technical field of intelligent keys, in particular to an intelligent key controller, an intelligent key control method and an intelligent key control system.
Background
An intelligent key system Controller in the related art mainly has a function of driving a low-frequency antenna to supply power to a high-frequency receiver, communicate with the high-frequency receiver, supply power to a radio-frequency card reader, and communicate with the radio-frequency card reader, and then sends a message to a Controller Area Network (CAN Network) of a vehicle.
In this way, the function of the intelligent key system controller is single, more external functional products are needed, and the intelligent key system controller is easy to be interfered by external electromagnetic waves.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide an intelligent key controller, an intelligent key control method and an intelligent key control system, which can effectively enrich the functions of an intelligent key system controller, enable the functions to be complete, avoid external electromagnetic interference, carry out uniform processing and transmission on electronic key signals by a micro control unit and avoid occupying excessive controller local area network resources.
To achieve the above object, an embodiment of a first aspect of the present invention provides a smart key controller, including: the high-frequency receiving module and the micro control unit are integrated on a circuit board, and the high-frequency receiving module is used for receiving an electronic key signal and sending the electronic key signal to the micro control unit; and the micro control unit is used for correspondingly processing the electronic key signal and transmitting the processed electronic key signal to a controller local area network of the vehicle.
The intelligent key controller provided by the embodiment of the first aspect of the invention integrates the high-frequency receiving module and the micro control unit, receives the electronic key signal through the high-frequency receiving module, and sends the electronic key signal to the micro control unit, and the micro control unit performs corresponding processing on the electronic key signal and transmits the processed electronic key signal to the controller local area network of the vehicle, so that the functions of the intelligent key system controller are effectively enriched, external electromagnetic interference is avoided while the functions are complete, and the micro control unit performs uniform processing and transmission on the electronic key signal, so that the occupation of too many controller local area network resources is avoided.
In order to achieve the above object, a method for controlling a smart key according to an embodiment of a second aspect of the present invention includes: receiving an electronic key signal and sending the electronic key signal to the micro control unit; and correspondingly processing the electronic key signal, and transmitting the processed electronic key signal to a controller area network of the vehicle.
In the intelligent key control method provided by the embodiment of the second aspect of the invention, the electronic key signal is received and sent to the micro control unit, the electronic key signal is correspondingly processed, and the processed electronic key signal is transmitted to the controller local area network of the vehicle, so that the functions of the intelligent key system controller are effectively enriched, the functions are complete, external electromagnetic interference is avoided, the micro control unit performs uniform processing and transmission on the electronic key signal, and excessive controller local area network resources are avoided.
To achieve the above object, a smart key control system according to a third aspect of the present invention includes: an electronic key for transmitting an electronic key signal after start-up, and a smart key controller as set forth in an embodiment of the first aspect of the present invention.
The intelligent key control system provided by the embodiment of the third aspect of the invention integrates the high-frequency receiving module and the micro control unit, receives the electronic key signal through the high-frequency receiving module, and sends the electronic key signal to the micro control unit, and the micro control unit carries out corresponding processing on the electronic key signal and transmits the processed electronic key signal to the controller local area network of the vehicle, so that the functions of the intelligent key system controller are effectively enriched, external electromagnetic interference is avoided while the functions are complete, and the micro control unit carries out uniform processing and transmission on the electronic key signal, so that the occupation of too many controller local area network resources is avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a smart key controller according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a smart key controller according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a smart key control method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a smart key control system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 1 is a schematic structural diagram of a smart key controller according to an embodiment of the present invention.
Referring to fig. 1, the smart key controller 10 includes:
the high-frequency key receiving device comprises a high-frequency receiving module 101 and a micro-control unit 102, wherein the high-frequency receiving module 101 and the micro-control unit 102 are integrally arranged on a Circuit Board, and the high-frequency receiving module 101 is used for receiving an electronic key signal and sending the electronic key signal to the micro-control unit 102, and the Circuit Board is, for example, a Printed Circuit Board (PCB).
The high-frequency receiving module 101 and the micro control unit 102 are integrated on the circuit board, so that the high-frequency receiving module 101 receives an electronic key signal, and data processing logic for sending the electronic key signal to the micro control unit 102 circulates in the circuit board, the design architecture of the intelligent key controller is effectively simplified, excessive additional equipment is not needed for supporting functions of the intelligent key controller, paths of all functions in the intelligent key controller are simpler, the manufacturing cost of the intelligent key controller is effectively reduced, and the processing efficiency of the intelligent key controller is improved.
In one embodiment of the present invention, the high frequency receiving module 101 is in data communication with the micro control unit 102 through a serial communication interface, wherein the high frequency receiving module 101 sends the electronic key signal to the micro control unit 102 via the serial communication interface.
The high-frequency receiving module 101 and the micro control unit 102 are integrated on the circuit board, and the high-frequency receiving module 101 is in data communication with the micro control unit 102 through the serial communication interface, so that compared with the mode of hard wire communication connection and CAN communication connection in the related art, the intelligent key controller CAN effectively reduce external electromagnetic interference, effectively improve the anti-interference performance of the intelligent key controller, avoid potential safety hazards caused by artificial damage of the intelligent key controller, improve the performance of the intelligent key controller, and improve the user experience. In the embodiment of the present invention, the high frequency receiving module 101 receives and verifies a high frequency signal (which may be referred to as an electronic key signal) sent by the electronic key, wakes up the micro control unit 102 through the interrupt port, and then sends the electronic key signal to the micro control unit 102.
In the embodiment of the present invention, the efficiency of waking up the micro control unit 102 by the high frequency receiving module 101 through the interrupt port is greatly improved by the integrated processing logic, so that the response speed is improved.
And the micro control unit 102 is configured to perform corresponding processing on the electronic key signal and transmit the processed electronic key signal to a controller area network of the vehicle.
Optionally, in some embodiments, referring to fig. 2, the smart key controller 10 further comprises: the bluetooth module 103 is integrally arranged on the circuit board, that is, the bluetooth module 103 is integrally arranged with the high-frequency receiving module 101 and the micro control unit 102. The bluetooth module 103 is configured to receive a bluetooth control signal transmitted by an external device, and send the bluetooth control signal to the mcu 102.
The mcu 102 correspondingly processes the bluetooth control signal and transmits the processed bluetooth control signal to the controller area network of the vehicle.
In the embodiment of the present invention, the bluetooth module 103, the high frequency receiving module 101, and the micro control unit 102 are integrated, so that the bluetooth module 103 receives a bluetooth control signal transmitted by an external device, and data processing logic for transmitting the bluetooth control signal to the micro control unit 102 circulates in a circuit board, which effectively simplifies the design architecture of the smart key controller, and since the bluetooth module 103 is disposed inside the smart key controller and integrated on the same circuit board, the wiring design CAN be effectively simplified, so that the processing logic of the bluetooth module 103 for the bluetooth control signal is executed inside the smart key controller, and does not need to occupy additional CAN network resources, thereby improving the performance of the smart key controller as a whole. The external device may be, for example, a terminal supporting a bluetooth function, which may transmit a bluetooth-formatted control signal, which may be referred to as a bluetooth control signal, for controlling the electronic key. The terminal can be a hardware device with various operating systems, such as a smart phone, a tablet computer, a personal digital assistant, an electronic book, and the like.
In the embodiment of the present invention, an external device is taken as an example of a mobile terminal, and specifically may be a bluetooth control signal transmitted by a bluetooth application program in the mobile terminal, so that the bluetooth module 103 is integrated in the smart key controller 10, so that the smart key controller 10 can directly perform data communication with the bluetooth application program in the mobile terminal, receive the bluetooth control signal, perform corresponding processing on the bluetooth control signal, and send the processed bluetooth control signal to the micro control unit 102 to implement pairing with the bluetooth application program, so that a user can implement remote control (for example, unlocking and locking a vehicle door, opening and closing an air conditioner, starting an ignition, and the like), vehicle remote monitoring (vehicle door state monitoring, tire pressure monitoring, mileage monitoring, energy consumption, endurance and the like), and the like by using the bluetooth application program.
In the embodiment of the present invention, the bluetooth module 103 performs data communication with the mcu 102 through a serial communication interface, wherein the bluetooth module 103 sends a bluetooth control signal to the mcu 102 through the serial communication interface.
In the embodiment of the invention, the Bluetooth module 103 is in data communication with the micro control unit 102 through the serial communication interface, and compared with the mode of hard-wire communication connection and CAN communication connection in the related art, the invention CAN effectively reduce external electromagnetic interference, effectively improve the anti-interference performance of the intelligent key controller, avoid potential safety hazard caused by artificial damage to the intelligent key controller, avoid the risk that a Bluetooth control signal CAN be stolen when the Bluetooth module 103 is arranged outside the intelligent key controller, improve the safety of the intelligent key controller, and improve the user experience.
Compared with the prior art, the intelligent key control system receives the Bluetooth control signal through the peripheral Bluetooth module, processes the Bluetooth control signal and directly sends the processed signal to the entire vehicle CAN network, in the embodiment of the invention, the Bluetooth control signal is received through the Bluetooth module 103 integrated in the intelligent key controller 10 and is sent to the entire vehicle CAN network after being processed in a centralized manner through the micro control unit 102, so that the controller area network resource CAN be effectively saved.
The Bluetooth module 103 in the embodiment of the invention sends the Bluetooth control signal to the micro control unit 102 through the serial communication interface, thereby reducing the wiring harness arrangement of the whole vehicle, realizing the communication with the Bluetooth module 103 in the intelligent key controller 10 through a Bluetooth application program, preventing the situation that a user of the vehicle forgets to carry a key and cannot drive the vehicle, facilitating the user to borrow the vehicle to other people through an account password, enabling the user to monitor the state of the whole vehicle through a terminal, and enabling the control of the whole vehicle to be more intelligent.
Optionally, in some embodiments, referring to fig. 2, the smart key controller 10 further comprises: the low-frequency driving module 104 is integrally arranged on the circuit board, that is, the low-frequency driving module 104, the bluetooth module 103, the high-frequency receiving module 101, and the micro control unit 102 are integrally arranged, wherein the low-frequency driving module 104 is used for driving a first antenna inside and outside the vehicle to generate a detection signal, so that whether an electronic key exists in a radiation range of the first antenna detection signal.
In the embodiment of the present invention, the low-frequency driving module 104, the bluetooth module 103, the high-frequency receiving module 101, and the micro control unit 102 are integrated on a circuit board, so that data flow of each module can be executed inside the smart key controller 10, thereby effectively improving response efficiency and accuracy.
The low-frequency driving module 104 in the embodiment of the invention is configured to drive a low-frequency antenna (which may be referred to as a first antenna) to emit a detection signal of 125KHZ, detect whether an electronic key exists in a signal radiation range based on the detection signal, and drive a multifunctional antenna (which may be referred to as a second antenna 106, and the second antenna 106 is configured to multiplex a function of an engine immobilizer system) to perform low-frequency bidirectional communication with the electronic key to implement the function of the engine immobilizer system.
In the embodiment of the invention, the low-frequency driving module is used for driving the second antenna 106 to realize the function of the multiplex engine anti-theft locking system, and compared with the function of realizing the multiplex engine anti-theft locking system based on a radio frequency card reader in the related technology, the low-frequency driving module is used for driving the second antenna 106 in the invention, the driving power is larger, the sensing distance is longer, the arrangement position of the second antenna 106 is more flexible than that of the radio frequency card reader, the system cost is lower, and the performance is more stable.
Optionally, in some embodiments, referring to fig. 2, the smart key controller 10 further comprises:
a microswitch signal acquisition module 105, wherein the microswitch signal acquisition module 105 is integrally arranged on the circuit board, that is, the microswitch signal acquisition module 105, the low-frequency driving module 104, the bluetooth module 103, the high-frequency receiving module 101 and the micro control unit 102 are integrally arranged, and the microswitch signal acquisition module 105 is used for acquiring a microswitch signal of a vehicle; when the microswitch signal is collected, the low-frequency driving module 104 drives the first antenna inside and outside the vehicle to generate a detection signal, and detects whether the electronic key exists in the signal radiation range based on the detection signal.
In the embodiment of the invention, the microswitch signal acquisition module 105, the low-frequency driving module 104, the bluetooth module 103, the high-frequency receiving module 101 and the micro control unit 102 are integrally arranged, so that the wiring arrangement of the whole vehicle can be further simplified, the response efficiency of the data acquired by the microswitch signal acquisition module 105 in the use process is effectively improved, the external electromagnetic interference is avoided, and the data response accuracy is improved.
The microswitch signals are, for example, vehicle front left, front right, trunk microswitch signals.
In the specific implementation process of the embodiment of the invention, if the electronic key exists in the signal radiation range, the high-frequency receiving module 101 receives the electronic key signal and sends the electronic key signal to the micro-control unit 102; if the electronic key is not detected in the signal radiation range, the processing is not carried out.
Optionally, in some embodiments, referring to fig. 2, the smart key controller 10 further comprises: the second antenna and the second antenna 106 are used for multiplexing functions of the engine anti-theft locking system, wherein if the electronic key exists in the signal radiation range, the low-frequency driving module 104 is triggered to drive the second antenna 106 to generate a detection signal, the detection signal is generated through the second antenna 106 to detect whether the electronic key exists in the radiation range, and if the electronic key exists, the high-frequency receiving module 101 receives the electronic key signal.
In the specific implementation process of the embodiment of the invention, the mcu 102 determines the priority information of the bluetooth control signal and the electronic key signal, and transmits the bluetooth control signal or the electronic key signal to the controller area network of the vehicle in combination with the priority information, wherein the priority information is preset according to the requirement of the user to whom the electronic key belongs.
In the embodiment of the invention, the priority information of the Bluetooth control signal and the electronic key signal is determined through the micro control unit 102, and the Bluetooth control signal or the electronic key signal is transmitted to the controller area network of the vehicle by combining the priority information, wherein the priority information is preset according to the requirements of a user to which the electronic key belongs, the individualized use requirements of the user can be met, the configuration of the intelligent key controller is more flexible, and the data processing efficiency is improved by combining the priority information to transmit the Bluetooth control signal or the electronic key signal to the controller area network of the vehicle.
Optionally, in some embodiments, referring to fig. 2, the smart key controller 10 further comprises: and a communication module 107, wherein the communication module 107 is integrally arranged on the circuit board, and the communication module 107 supports data communication of a controller area network protocol, wherein the MCU 102 transmits the Bluetooth control signal or the electronic key signal to a controller area network of the vehicle via the communication module 107.
In the embodiment of the present invention, the communication module 107 is integrally disposed on the circuit board, that is, the communication module 107, the high frequency receiving module 101, the micro control unit 102, the bluetooth module 103, the low frequency driving module 104, and the like are integrally disposed on a circuit board, so that the micro control unit 102 has a faster transmission rate and a faster response when transmitting the bluetooth control signal or the electronic key signal to the controller area network of the vehicle through the communication module 107.
In the embodiment of the present invention, the priority of the bluetooth control signal and the electronic key signal can be distinguished by the microcontroller unit 102 in the smart key controller 10, so as to further save the controller area network resources.
The application functions that can be supported by the embodiment of the invention include: remote access Entry (RKE), Keyless Entry (PKE), Keyless Start (PKS), and Immobilizer (IMMO) and bluetooth control functions.
According to the embodiment of the invention, when the functions of keyless entry and keyless start can be realized, the functions of low-frequency driving and high-frequency receiving are carried out in the intelligent key controller 10, so that the response time is effectively prolonged, and the user experience is improved.
As an example, when implementing an application function of the bluetooth control function: after the authentication is successful, the bluetooth application program sends a corresponding bluetooth control signal (the bluetooth control signal may be used for executing a door unlocking command, for example), the bluetooth module 103 receives the bluetooth control signal, transmits the bluetooth control signal to the micro control unit 102, the micro control unit 102 receives the bluetooth control signal, sends a corresponding CAN message (the CAN message is a door unlocking message, corresponds to the bluetooth control signal, and is used for unlocking a door) to the entire car CAN network, the entire car responds to the CAN message, executes a corresponding function (for example, a door unlocking function), then feeds back an operation execution information message (for example, a door unlocking success message) to the smart key controller, and the smart key controller 10 feeds back information (for example, a door unlocking success message) generated according to the operation execution information message to the bluetooth application program through the bluetooth module 103 And displaying the corresponding operation execution condition (for example, the door is successfully unlocked) through the Bluetooth application program.
As another example, when implementing an application function of Remote access control (RKE): after the key of the electronic key is triggered (for example, an unlocking key is triggered), the electronic key sends an electronic key signal of 315MHZ or 433.92MHZ, the high-frequency receiving module 101 in the smart key controller 10 receives the electronic key signal, modulates and demodulates the electronic key signal, wakes up the micro control unit 102 through an interrupt wake-up port, sends the processed electronic key signal to the micro control unit 102 through a Serial Peripheral Interface (SPI), and the micro control unit 102 receives the processed electronic key signal, analyzes and processes the processed electronic key signal, transmits a corresponding CAN message (the CAN message is a key remote unlocking message corresponding to the electronic key signal and used for remotely unlocking a vehicle door) to a whole vehicle CAN network, a vehicle body control module and other products to execute an operation corresponding to the electronic key signal (for example, unlocking the entire vehicle).
In the embodiment of the invention, when the application function of the Keyless Entry (PKE) is realized, the microswitch signal acquisition module 105 is adopted to acquire the microswitch signals of the left front, the right front and the trunk of the vehicle.
As another example, when implementing a Keyless Entry (PKE) application function, the smart key controller 10, after acquiring a micro-switch signal through the micro-switch signal acquisition module, drives the in-vehicle and out-vehicle low-frequency detection antenna (first antenna) to search for a card through the low-frequency driving module 104, if the electronic key is in a signal radiation range of the detection signal of the first antenna (for example, the electronic key is in a range of 1.2m of a left front door outside the vehicle), the electronic key sends a corresponding electronic key signal (at this time, the electronic key signal is used to respond to the detection of the first antenna on the electronic key), the high-frequency receiving module 101, after receiving the electronic key signal, performs modulation and demodulation processing on the electronic key signal, transmits the processed electronic key signal to the micro-control unit 102, after receiving the electronic key signal, analyzes the electronic key signal, and generating and sending a corresponding CAN message (which may be referred to as a first CAN message used for identifying that an electronic key exists in a signal radiation range of an antenna outside the vehicle) to other products such as a vehicle CAN network, a vehicle body control module and the like to execute an operation corresponding to a corresponding microswitch signal (for example, opening or closing a left front door), and if the high-frequency receiving module 101 does not receive the corresponding electronic key signal, not performing the corresponding operation.
As another example, when implementing a Keyless Start (PKS) application function, the vehicle controller collects that a Start button of the vehicle is pressed, and sends a corresponding CAN signal (for in-vehicle card seeking) to the vehicle CAN network, the smart key controller 10 receives the CAN signal, and drives an in-vehicle low-frequency detection antenna (a first antenna) to seek the card through the low-frequency driving module 104, if the electronic key is in the vehicle, the electronic key sends a corresponding electronic key signal, the high-frequency receiving module 101 inside the smart key controller 10 receives the electronic key signal and then performs modulation and demodulation processing, transmits the processed electronic key signal to the micro-control unit 102, and the micro-control unit 102 receives the processed electronic key signal and then analyzes the signal, and generates and sends a corresponding CAN message (the CAN message is used for identifying that the in-vehicle antenna signal radiation range is stored in the electronic key) to the vehicle CAN network, other products such as a vehicle body control module and the like execute the operation after the start button is pressed (for example, the whole vehicle is electrified); if the electronic key is not in the vehicle or the electronic key is not powered, the high-frequency receiving module 101 does not receive the corresponding electronic key signal for a period of time, and the IMMO function does not detect the electronic key, the smart key controller 10 generates and transmits a CAN message, which is used to identify that the electronic key is not in the vehicle.
As another example, when implementing an application function of an engine Immobilizer (IMMO), in the case that an electronic key is not powered, a vehicle control unit collects that a start button of a vehicle is pressed, and sends a corresponding CAN signal (for searching a card in the vehicle) to a vehicle CAN network, the smart key controller 10 receives the CAN signal, drives a low-frequency detection antenna (a first antenna) in the vehicle to search the card through the low-frequency driving module 104, and triggers the low-frequency driving module 104 after the card is not found, drives the multifunctional antenna (a second antenna 106) to implement the IMMO function, and detects whether the electronic key exists in a signal radiation range through a detection signal of the second antenna 106, if the electronic key exists, the second antenna 106 and the electronic key perform bidirectional communication successfully, the low-frequency driving module 104 sends the received signal to the micro control unit 102, and after the micro control unit 102 receives the signal, and generating and sending a corresponding CAN message (the CAN message is used for identifying that the electronic key exists in the signal radiation range) to a finished automobile CAN network, a vehicle body control module and other products execute corresponding electrifying operation, if the electronic key is not in the signal radiation range of the second antenna 106 and the two-way communication between the second antenna 106 and the electronic key is unsuccessful, the intelligent key controller 10 generates and sends the CAN message, and the CAN message is used for identifying that the electronic key does not exist in the signal radiation range.
In the embodiment of the invention, the antenna for multiplexing the function of the engine anti-theft locking system is integrated, and the low-frequency driving module 104 in the intelligent key controller 10 is adopted to drive the second antenna 106 to realize the engine anti-theft function, so that compared with the radio frequency card reader in the related technology, the engine anti-theft function is realized, the driving power in the embodiment of the invention is larger, the sensing distance is farther, the arrangement position of the second antenna 106 is more flexible than that of the radio frequency card reader, the system cost is lower, and the performance is more stable.
In the embodiment of the invention, referring to fig. 2, an external device power supply and communication module 108 may be further reserved for supplying power to and communicating with an external high-frequency receiver and supplying power to and communicating with an external radio frequency card reader, so that compatibility with an intelligent key system in the related art can be realized, and replacement between platforms can be better realized.
In the embodiment of the present invention, referring to fig. 2, the power module 109 is further included, and is configured to process an input power and convert a 12V power into 5V and 3.3V power for the micro control unit 102, the high frequency receiving module 101, the bluetooth module 103, and the like.
In this embodiment, high frequency receiving module and micro control unit have been integrated, receive the electronic key signal via high frequency receiving module, and send the electronic key signal to micro control unit, micro control unit carries out corresponding processing to the electronic key signal, and transmit the electronic key signal after handling to the controller area network of vehicle, the function of intelligent key system controller has effectively been enriched, make the function complete, avoid outside electromagnetic interference, and carry out unified processing and transmission to the electronic key signal by micro control unit, avoided occupying too much controller area network resources.
Fig. 3 is a flowchart illustrating a method for controlling a smart key according to an embodiment of the present invention.
Referring to fig. 3, the method includes:
s301: and receiving the electronic key signal and sending the electronic key signal to the micro control unit.
S302: and correspondingly processing the electronic key signal, and transmitting the processed electronic key signal to a controller area network of the vehicle.
Alternatively, in some embodiments, wherein,
receiving a Bluetooth control signal transmitted by external equipment, and sending the Bluetooth control signal to a micro control unit;
and correspondingly processing the Bluetooth control signal, and transmitting the processed Bluetooth control signal to a controller area network of the vehicle.
Optionally, in some embodiments, the method further comprises:
a first antenna inside and outside the vehicle is driven to generate a detection signal, so that the first antenna detects whether an electronic key exists in a signal radiation range.
Optionally, in some embodiments, the method further comprises:
collecting a microswitch signal of a vehicle;
when the microswitch signal is collected, the first antennas inside and outside the vehicle are driven to generate detection signals, and whether the electronic key exists in the radiation range of the detection signals or not is detected based on the detection signals.
Alternatively, in some embodiments, wherein,
if the electronic key exists in the signal radiation range, receiving an electronic key signal and sending the electronic key signal to the micro control unit;
if the electronic key is not detected in the signal radiation range, the processing is not carried out.
Optionally, in some embodiments, the method further comprises:
if the electronic key exists in the signal radiation range, the low-frequency driving module is triggered to drive the second antenna to generate a detection signal, the detection signal is generated through the second antenna to detect whether the electronic key exists in the radiation range, and if the electronic key exists, the high-frequency receiving module receives the electronic key signal.
Alternatively, in some embodiments, wherein,
determining priority information of the Bluetooth control signal and the electronic key signal, and transmitting the Bluetooth control signal or the electronic key signal to a controller area network of the vehicle by combining the priority information, wherein the priority information is preset according to the requirements of a user to which the electronic key belongs.
Alternatively, in some embodiments, wherein,
the electronic key signal is sent to the micro control unit via the serial communication interface, and the bluetooth control signal is sent to the micro control unit via the serial communication interface.
It should be noted that the foregoing explanations of the embodiment of the smart key controller 10 in fig. 1-2 are also applicable to the smart key control method of this embodiment, and the implementation principle is similar, and will not be described herein again.
In the embodiment, by receiving the electronic key signal and sending the electronic key signal to the micro control unit, the electronic key signal is correspondingly processed, and the processed electronic key signal is transmitted to the controller local area network of the vehicle, so that the functions of the intelligent key system controller are effectively enriched, external electromagnetic interference is avoided while the functions are complete, the micro control unit performs uniform processing and transmission on the electronic key signal, and excessive controller local area network resources are avoided.
Fig. 4 is a schematic structural diagram of a smart key control system according to an embodiment of the present invention.
Referring to fig. 4, the system 40 includes:
an electronic key 401, the electronic key 401 being configured to transmit an electronic key signal after start-up;
and the smart key controller 10 in the above embodiment.
In this embodiment, high frequency receiving module and micro control unit have been integrated, receive the electronic key signal via high frequency receiving module, and send the electronic key signal to micro control unit, micro control unit carries out corresponding processing to the electronic key signal, and transmit the electronic key signal after handling to the controller area network of vehicle, the function of intelligent key system controller has effectively been enriched, make the function complete, avoid outside electromagnetic interference, and carry out unified processing and transmission to the electronic key signal by micro control unit, avoided occupying too much controller area network resources.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (18)
1. A smart key controller, comprising: the high-frequency receiving module and the micro control unit are integrated on a circuit board, and the high-frequency receiving module is used for receiving an electronic key signal and sending the electronic key signal to the micro control unit;
and the micro control unit is used for correspondingly processing the electronic key signal and transmitting the processed electronic key signal to a controller local area network of the vehicle.
2. The smart key controller of claim 1, further comprising: a Bluetooth module integrally disposed on the circuit board, wherein,
the Bluetooth module is used for receiving a Bluetooth control signal transmitted by external equipment and sending the Bluetooth control signal to the micro control unit;
and the micro control unit is used for correspondingly processing the Bluetooth control signal and transmitting the processed Bluetooth control signal to a controller local area network of the vehicle.
3. The smart key controller of claim 1, further comprising: a low frequency drive module integrally disposed on the circuit board, wherein,
the low-frequency driving module is used for driving a first antenna inside and outside the vehicle to generate a detection signal, so that whether an electronic key exists in the radiation range of the detection signal of the first antenna.
4. The smart key controller of claim 3, further comprising:
the microswitch signal acquisition module is integrated on the circuit board and is used for acquiring a microswitch signal of the vehicle;
when the microswitch signal is collected, the low-frequency driving module drives the first antenna inside and outside the vehicle to generate a detection signal, and whether the electronic key exists in the signal radiation range is detected based on the detection signal.
5. The smart key controller of claim 3, wherein,
if the electronic key is detected to exist in the signal radiation range, the high-frequency receiving module receives the electronic key signal and sends the electronic key signal to the micro control unit;
and if the electronic key is not detected to exist in the signal radiation range, the electronic key is not processed.
6. The smart key controller of claim 5, further comprising: a second antenna for multiplexing the function of the engine immobilizer system, wherein,
if the electronic key exists in the signal radiation range, the low-frequency driving module is triggered to drive the second antenna to generate a detection signal, the detection signal is generated through the second antenna to detect whether the electronic key exists in the radiation range, and if the electronic key exists, the high-frequency receiving module receives an electronic key signal.
7. The smart key controller of claim 2, wherein,
the micro control unit determines priority information of the Bluetooth control signal and the electronic key signal, and transmits the Bluetooth control signal or the electronic key signal to a controller area network of the vehicle by combining the priority information, wherein the priority information is preset according to the requirements of a user to which the electronic key belongs.
8. The smart key controller of claim 2, wherein said high frequency receiving module and said Bluetooth module are in data communication with said micro control unit through serial communication interfaces, respectively, wherein,
the high-frequency receiving module sends the electronic key signal to the micro control unit through the serial communication interface, and the Bluetooth module sends the Bluetooth control signal to the micro control unit through the serial communication interface.
9. The smart key controller of claim 1, further comprising: a communication module integrally disposed on the circuit board, wherein,
the communication module supports data communication of a controller area network protocol, wherein the micro control unit transmits the Bluetooth control signal or the electronic key signal to a controller area network of the vehicle via the communication module.
10. An intelligent key control method is characterized by comprising the following steps:
receiving an electronic key signal and sending the electronic key signal to a micro control unit;
and correspondingly processing the electronic key signal, and transmitting the processed electronic key signal to a controller area network of the vehicle.
11. The smart key control method of claim 10, wherein,
receiving a Bluetooth control signal transmitted by external equipment, and sending the Bluetooth control signal to the micro control unit;
and correspondingly processing the Bluetooth control signal, and transmitting the processed Bluetooth control signal to a controller area network of the vehicle.
12. The smart key control method of claim 10, further comprising:
a first antenna inside and outside the vehicle is driven to generate a detection signal, so that whether an electronic key exists in a radiation range of the detection signal of the first antenna.
13. The smart key control method of claim 12, further comprising:
collecting a microswitch signal of the vehicle;
when the microswitch signal is collected, a first antenna inside and outside the vehicle is driven to generate a detection signal, and whether the electronic key exists in the signal radiation range is detected based on the detection signal.
14. The smart key control method of claim 12, wherein,
if the electronic key is detected to exist in the signal radiation range, receiving the electronic key signal and sending the electronic key signal to the micro control unit;
and if the electronic key is not detected to exist in the signal radiation range, the electronic key is not processed.
15. The smart key control method of claim 14, further comprising:
if the electronic key exists in the signal radiation range, the low-frequency driving module is triggered to drive the second antenna to generate a detection signal, the detection signal is generated through the second antenna to detect whether the electronic key exists in the radiation range, and if the electronic key exists, the high-frequency receiving module receives an electronic key signal.
16. The smart key control method of claim 11, wherein,
determining priority information of the Bluetooth control signal and the electronic key signal, and transmitting the Bluetooth control signal or the electronic key signal to a controller area network of the vehicle by combining the priority information, wherein the priority information is preset according to the requirements of a user to which the electronic key belongs.
17. The smart key control method of claim 11, wherein,
the electronic key signal is sent to the micro control unit via the serial communication interface, and the bluetooth control signal is sent to the micro control unit via the serial communication interface.
18. A smart key control system, comprising:
an electronic key for transmitting an electronic key signal after start-up; and
the smart key controller of any one of claims 1-9 above.
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| CN201910195441.4A CN111694297A (en) | 2019-03-14 | 2019-03-14 | Intelligent key controller, intelligent key control method and system |
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| CN201910195441.4A CN111694297A (en) | 2019-03-14 | 2019-03-14 | Intelligent key controller, intelligent key control method and system |
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Application publication date: 20200922 |