CN112078518A - Vehicle control system - Google Patents
Vehicle control system Download PDFInfo
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- CN112078518A CN112078518A CN202010933095.8A CN202010933095A CN112078518A CN 112078518 A CN112078518 A CN 112078518A CN 202010933095 A CN202010933095 A CN 202010933095A CN 112078518 A CN112078518 A CN 112078518A
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- vehicle control
- control system
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- motor controller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The embodiment of the invention provides a whole vehicle control system, relates to the technical field of automobiles, and can provide a wireless transmission network, so that the whole vehicle control system can complete data interaction through the wireless network, and the intelligent development of the whole vehicle control system is facilitated. The system comprises: the system comprises a vehicle control unit, a motor controller and a micro base station, wherein the vehicle control unit and the motor controller are provided with signal transceivers; the vehicle control unit is communicated with the motor controller through the signal transceiver; the vehicle control unit is used for sending a control command to the motor controller; the control instruction is used for indicating the operation of the motor controller; the motor controller is used for controlling the running state of the vehicle according to the running of the control instruction sent by the vehicle controller; the vehicle operating state includes acceleration, deceleration, and stop; and the micro base station is used for providing a wireless network for the vehicle control unit and the motor controller. The invention is used for vehicle control.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a whole automobile control system.
Background
In the current vehicle-mounted communication system, a Local Interconnect Network (LIN) bus and a Controller Area Network (CAN) bus are generally adopted to provide communication service for the vehicle control system, and the LIN bus and the CAN bus provide communication service in a wired connection manner. Along with the intelligent development of vehicles, the number of electronic devices equipped in the vehicle is greatly increased, the control system of the whole vehicle is more and more complex, and the requirements on a vehicle-mounted communication system are gradually improved. Due to the fact that wiring harness arrangement and network topology design of the LIN bus and the CAN bus are limited in a wired connection mode, arrangement of electronic devices in a vehicle is limited, development of a whole vehicle control system is affected, and progress of intelligent development of the vehicle is seriously affected.
Disclosure of Invention
The embodiment of the invention provides a vehicle control system, which can provide a wireless transmission network, so that the whole vehicle control system can complete data interaction through the wireless network, and the intelligent development of the whole vehicle control system is facilitated.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a vehicle control system is provided, including: the system comprises a vehicle control unit, a motor controller and a micro base station, wherein the vehicle control unit and the motor controller are provided with signal transceivers; the vehicle control unit is communicated with the motor controller through the signal transceiver; the vehicle control unit is used for sending a control command to the motor controller; the control instruction is used for indicating the operation of the motor controller; the motor controller is used for controlling the running state of the vehicle according to the running of the control instruction sent by the vehicle controller; the vehicle operating state includes acceleration, deceleration, and stop; and the micro base station is used for providing a wireless network for the vehicle control unit and the motor controller.
In a second aspect, an automobile is provided, which includes the entire automobile control system provided in the first aspect.
The whole vehicle control system provided by the embodiment of the invention comprises: the system comprises a vehicle control unit, a motor controller and a micro base station, wherein the vehicle control unit and the motor controller are provided with signal transceivers; the vehicle control unit is communicated with the motor controller through the signal transceiver; the vehicle control unit is used for sending a control command to the motor controller; the control instruction is used for indicating the operation of the motor controller; the motor controller is used for controlling the running state of the vehicle according to the running of the control instruction sent by the vehicle controller; the vehicle operating state includes acceleration, deceleration, and stop; and the micro base station is used for providing a wireless network for the vehicle control unit and the motor controller. The whole vehicle control system provided by the embodiment of the invention provides a wireless network covering the vehicle through the micro base station, and all systems and electronic devices in the whole vehicle control system CAN communicate with each other through the wireless network provided by the micro base station, for example, the whole vehicle controller and the motor controller communicate through the wireless network, so that the influence of wiring harness arrangement of a LIN bus and a CAN bus is avoided, the arrangement of all electronic devices in the whole vehicle control system is facilitated, and the intelligent development of the vehicle is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a first schematic structural diagram of a vehicle control system according to an embodiment of the present invention;
fig. 2 is a first schematic structural diagram of a signal transceiver according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a signal transceiver according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a network slicing service provided by a micro base station according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram ii of a vehicle control system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a peer-to-peer communication architecture according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a peer-to-peer communication flow according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a micro base station antenna and a transceiver antenna of a signal transceiver according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a point-to-multipoint communication architecture according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like are not limited in number or execution order.
With the advancement of science and technology, automobiles are developing towards four new directions of electromotion, networking, intellectualization and sharing, the number of electronic devices in automobiles is rapidly increasing, and particularly various controllers and sensors also put new demands on vehicle-mounted communication systems. When the load of the existing vehicle-mounted communication system based on the CAN bus and the LIN bus is large, the situations of data loss, delay and the like easily occur; the CAN bus and the LIN bus have low communication speed, cannot meet the communication requirements of high speed and low time delay of the automobile, have poor safety of a communication protocol mode and have the risk of being maliciously controlled by lawbreakers.
The vehicle-mounted communication system CAN also provide communication service for the whole vehicle control system through a vehicle-mounted Ethernet bus, and although the communication rate of the vehicle-mounted Ethernet bus is greatly improved compared with a CAN bus and a LIN bus, the vehicle-mounted communication system still cannot meet the requirement of ultrahigh-definition video data transmission required by intelligent driving of a vehicle. In the vehicle-mounted Ethernet bus, all electronic devices need to be in data interaction with the central gateway in a wired connection mode, data cannot be directly interacted among the electronic devices, wiring harness arrangement is complex, data transmission delay is high, and intelligent development of vehicles is limited.
To solve the problems of the existing vehicle-mounted communication system, an embodiment of the present invention provides a vehicle control system, as shown in fig. 1, including: the system comprises a vehicle control unit, a motor controller and a micro base station, wherein the vehicle control unit and the motor controller are provided with signal transceivers; and the vehicle control unit is communicated with the motor controller through the signal transceiver.
The vehicle control unit is used for sending a control command to the motor controller; the control instructions are used to instruct the motor controller to operate.
The motor controller is used for controlling the running state of the vehicle according to the running of the control instruction sent by the vehicle controller; the vehicle operating state includes acceleration, deceleration, and stop.
And the micro base station is used for providing a wireless network for the vehicle control unit and the motor controller.
Specifically, a Vehicle Control Unit (VCU) is a core control device of the whole vehicle, and may collect signals of an accelerator pedal, a brake pedal, and other control devices, and formulate a corresponding response strategy according to the collected signals, so as to control the operation of each system controller of the lower layer. For example, the vehicle control unit may send a first control instruction to the motor controller according to an accelerator pedal signal, where the first control instruction is used to instruct the motor to operate in an accelerated manner, so as to control the vehicle to accelerate; the vehicle control unit can also send a second control instruction to the motor controller according to the brake pedal signal, and the second control instruction is used for indicating the motor to run at a reduced speed at the moment so as to control the vehicle to reduce the speed. Of course, the vehicle controller may also acquire signals of other devices inside the vehicle and send corresponding control instructions to the corresponding controllers, which is not described in detail herein.
The motor controller is used for controlling a power system of a vehicle, such as an engine of the vehicle, a control command of the motor controller is sent by the vehicle control unit, and if the motor controller receives the first control command, the motor controller controls the engine to run in an accelerated mode; and if the second control instruction is received, controlling the engine to run in an accelerated mode. The engine here is the above-mentioned electric machine.
It should be noted that the entire vehicle control system according to the embodiment of the present invention is configured with a micro base station, which is used to provide a wireless network covering a vehicle, and provide a wireless transmission channel for the operation of the entire vehicle control system. The embodiment of the invention also provides a signal transceiver which is used for being combined with each device in a finished automobile control system and providing a signal transceiving function for the devices, for example, the signal transceiver CAN be combined with a finished automobile controller and a motor controller, so that the finished automobile controller and the motor controller do not need to communicate through wired connection such as a CAN bus but communicate through a wireless network provided by a micro base station, a control instruction of the finished automobile controller CAN be forwarded to the motor controller through the micro base station, and the motor controller controls specific devices to execute corresponding operations according to the control instruction.
It should be noted that the control instruction may include not only the first control instruction and the second control instruction, but also other control instructions to control the change of the vehicle running state, and the vehicle running state may also include only the above-mentioned acceleration, and stop, and may also include steering, reversing, and the like. The micro base station may be a fifth generation (5th-generation, 5G) base station.
The embodiment of the invention completes the communication of each device in the vehicle control system through the wireless network, CAN avoid the faults of short circuit, open circuit and the like of the traditional wired communication modes such as a CAN bus or a LIN bus and the like, and CAN also avoid the problem that lawless persons violently crack the line of the vehicle control system through cracking tools. Meanwhile, a safety mechanism of wireless communication can be established for the whole vehicle control system based on the encryption technology of the 5G network, so that lawless persons are prevented from cracking to obtain vehicle control information, and the safety of vehicles is further endangered. Meanwhile, the whole vehicle control system is based on a wireless communication mode, so that the wire harness cost can be reduced, and the flexibility of arrangement of the whole vehicle control system is improved.
The signal transceiver provided by the embodiment of the present invention may be as shown in fig. 2, and includes a transceiver antenna and a baseband chip;
the receiving and transmitting antenna is used for receiving the first electromagnetic wave signal and converting the first electromagnetic wave signal into a first electric signal; the transceiving antenna is also used for converting the second electric signal into a second electromagnetic wave signal and sending the second electromagnetic wave signal;
a baseband chip for decoding the first electrical signal; and the baseband chip is also used for coding the second electric signal.
Specifically, the signal transceiver provided in the embodiment of the present invention may be combined with any system in a vehicle control system to provide a signal transceiving service for the vehicle control system. For example, when the signal transceiver is combined with the vehicle control unit, the signal transceiver may transmit a control signal (control instruction) to the vehicle control unit, encode the control signal formulated by the vehicle control unit through the baseband chip, encode the control signal into a corresponding baseband code, and transmit the baseband code to a lower controller, such as a motor controller, through the transceiver antenna; the signal transceiver may also be configured to receive, by the vehicle controller, a signal sent by another lower-layer controller or a sensor, such as a response signal sent by the motor controller (the response signal may indicate that the motor controller has performed a corresponding operation, and the response signal may be encoded and sent by a signal transceiver built in the motor controller), where the response signal is received by the transceiver antenna and decoded by the baseband chip, so as to obtain corresponding data information.
Because the control signal and the response signal are both electric signals, when the signal transceiver sends corresponding signals, the built-in transceiving antenna can convert the electric signals into electromagnetic wave signals so as to be conveniently received by other devices in the whole vehicle control system; other devices in the vehicle control system can receive electromagnetic wave signals through a built-in signal transceiver, and the received electromagnetic wave signals are converted into electric signals by a transceiving antenna for processing.
It should be noted that, the above example is only an example, and since each device in the vehicle control system in the embodiment of the present invention is provided with a signal transceiver, each device may process a corresponding signal according to the above signal transceiving process.
In an alternative implementation, as shown in fig. 3, the signal transceiver may further include a filter and an amplifier.
The filter can be used for filtering signal frequencies except the target signal frequency; the amplifier is used for amplifying the target signal.
In an optional implementation manner, the signal transceiver may be integrated on a processor of each device in the entire vehicle control system, that is, a processor with a signal transceiving function may be provided, and includes a transceiving antenna, a baseband chip, a filter, a power amplifier module, and a data processing chip (processor). The data processing chip may be a Micro Processor Unit (MPU), a Digital Signal Processor (DSP), a Micro Controller Unit (MCU), or the like, and is configured to process received data information. Of course, the signal transceiver may also be disposed in parallel with each device in the vehicle control system, that is, after receiving the corresponding signal, the signal transceiver transmits the signal to the corresponding device.
Optionally, as shown in fig. 4, the micro base station provided in the embodiment of the present invention is further configured to provide a network slicing service for the entire vehicle control system; the network slicing service comprises a first network slicing service and a second network slicing service, and the first network slicing service and the second network slicing service are used for providing network services for the whole vehicle control system; the latency and bandwidth of the first network slice and the second network slice are different.
Specifically, since the micro base station can be a 5G base station, the micro base station can provide a network slicing service to adapt to network requirements of different systems in the entire vehicle control system. For example, the first network slicing service can provide a network service with a large bandwidth and a high rate for the vehicle control system, and the second network slicing service can provide a network service with high reliability and low time delay for the vehicle control system. Since the network requirements of the first network slicing service and the second network slicing service are different. Different bandwidths may be set for the first network slice service and the second network slice service. Of course, the first network slicing service and the second network slicing service are only examples, and those skilled in the art may also set the network slicing service provided by the micro base station according to needs, and the embodiment of the present invention is not limited.
Alternatively, as shown in fig. 5, the vehicle control system may include an electronic control system and a functional system, where the electronic control system is used to control the operation of the vehicle, and the functional system is used to provide auxiliary services for the operation of the vehicle. For example, the electronic control system may include a vehicle control unit, a motor controller, and an Antilock Brake System (ABS), and the functional system may include a combination meter and an air conditioning system. When the anti-lock system is used for braking the automobile, the size of braking force is automatically controlled, and the safety coefficient of emergency braking of the automobile is improved; the combination meter is used for displaying real-time running information of the automobile, including speed, oil consumption, temperature in the automobile and the like; air conditioning systems are used to regulate the temperature of the interior of an automobile.
The first network slice service is used for providing network services for the electronic control system, and the second network slice service is used for providing network services for the functional system. The first network slicing service comprises a plurality of first sub-network slicing services, and the second network slicing service comprises a plurality of second sub-network slicing services; the first sub-network slicing service is used for providing network services for the electronic control system, the second sub-network slicing service is used for providing network services for the functional system, and the time delay and the bandwidth of the first sub-network slicing service are different from those of the second sub-network slicing service. The vehicle control unit and the motor controller both belong to an electronic control system.
Specifically, since the vehicle control system includes an electronic control system and a functional system, the electronic control system may further include various devices such as a vehicle control unit and a motor controller, and the functional system may also include various devices such as an entertainment system and an air conditioning system, since network requirements of each device may be different, the first network slicing service may be divided into a plurality of first sub-network slicing services, each of the first sub-network slicing services may provide a network service for one or more devices, and a delay and a bandwidth between the first sub-network slicing services may be different. Correspondingly, the second network slicing service may also be divided into a plurality of second sub-network slicing services, each of the second sub-network slicing services may provide network services for one or more devices, and the time delay and bandwidth between the second sub-network slicing services may also be different.
It should be noted that the device according to the embodiment of the present invention may refer to not only a single electronic device, such as a controller of a motor controller, but also various subsystems in a vehicle control system, such as a power system, an anti-lock system, and the like.
For example, when the electronic control system includes a vehicle control unit, a motor controller, and an anti-lock system, and the functional system includes a combination meter and an air conditioning system, the first network slicing service may be used to provide network services for the vehicle control unit, the motor controller, and the anti-lock system, and the second network slicing service may be used to provide network services for the combination meter and the air conditioning system. Of course, the first network slicing service may be divided into a plurality of first sub-network slicing services, such as 1-N shown in fig. 5, which are respectively a first sub-network slicing service 1, a first sub-network slicing service 2, a first sub-network slicing service 3 …, a first sub-network slicing service N; the first sub-network slicing service 1 can be used for providing network services for the vehicle control unit, the first sub-network slicing service 2 can be used for providing network services for the motor controller, and the first sub-network slicing service 3 can be used for providing network services for the anti-lock braking system. Accordingly, the second network slicing service may be divided into a plurality of second sub-network slicing services, such as 4-M shown in fig. 5, which are respectively a second sub-network slicing service 4, a second sub-network slicing service 5, and a second sub-network slicing service 6 …, a second sub-network slicing service M; wherein the second sub-network slicing service 4 may be used to provide network services for the cluster and the second sub-network slicing service 5 may be used to provide network services for the air conditioning system.
It should be noted that the electronic control system and the functional system are only exemplary, and in practice, the electronic control system and the functional system further include other devices, so that the first network slicing service and the second network slicing service may be divided into more sub-network slicing services, which can be set as required by those skilled in the art. Of course, the same network slicing service may also provide network services for multiple devices, for example, the first sub-network slicing service 1 may provide network services for the vehicle controller and the motor controller at the same time. Fig. 5 does not show signal transceivers deployed in each device of the electronic control system and the functional system, but those skilled in the art should understand that the signal transceivers are deployed in each device of the electronic control system and the functional system provided by the embodiment of the present invention.
Through network slicing, the embodiment of the invention can provide a vehicle-mounted bus topological architecture, and the topological architecture can realize communication of each device in the architecture through a wireless network. Based on the network slice, the topology framework can realize flexible and changeable topology modes through software, and is convenient to deploy. The micro base station can dynamically allocate resources according to the load conditions of different network slices, accelerate the transmission rate of data and avoid network congestion.
The embodiment of the invention can provide network slicing service for the whole vehicle control system through the micro base station, thereby realizing the purpose of providing different network slicing service aiming at the network requirements of different devices, and when a certain network slicing service fails, the micro base station can generate new network slicing service and continue to provide network service for the corresponding devices, thereby improving the safety of the whole vehicle control system and avoiding the condition that the vehicle cannot normally run when the network service is interrupted.
Optionally, the electronic control system may further include a Battery Management System (BMS), a Body Control Module (BCM), a body stabilization system, an electronic suspension system, a power system, and the like, and the functional system may further include an entertainment system, a positioning system, and the like.
The BMS can be used for measuring the electrical parameters and the thermal parameters of the automobile battery and finishing electric quantity calculation and safety management; the BCM is used for controlling an electronic control unit of a vehicle body electrical system, such as a power window, a power rearview mirror, an air conditioner, a headlamp, a steering lamp, an anti-theft locking system, a central control lock, a defrosting device and the like; the vehicle body stabilizing system is used for maintaining the dynamic balance of the vehicle and keeping the stability of the vehicle; the electronic suspension system is used for keeping the smoothness of the automobile in the driving process; the power system is used for providing power for the running of the automobile; entertainment systems are used to provide additional entertainment functions for automobiles, such as vehicle television, vehicle radio, etc.; the positioning system is used for determining the current position of the automobile and can also be used for making a navigation route for the automobile.
In the embodiment of the present invention, each of the systems is provided with a signal transceiver, so as to implement wireless communication between the systems. Of course, these systems may include a plurality of sensors to collect the running status of the vehicle, these sensors may also be deployed with signal transceivers, the signal transceivers send the collected data information to corresponding processors, and the processors may send the response policy to corresponding controllers through built-in signal transceivers after assigning the response policy according to the received data information.
For example, the vehicle body stabilization system includes a steering sensor, a wheel sensor, a side slip sensor, a lateral acceleration sensor, a steering wheel accelerator brake pedal sensor, and the like, the sensors are all provided with signal transceivers, after the sensors collect data information, the data information can be sent to a processor of the vehicle body stabilization system through the built-in signal transceivers, a corresponding response strategy is formulated by the processor of the vehicle body stabilization system, and the response strategies are sent to a corresponding controller through the signal transceivers.
It should be noted that, the above embodiment only discloses a part of the components of the vehicle control system, and in practice, the vehicle control system may further include other devices, which are not described in detail herein. However, it should be noted that each device in the entire vehicle control system is provided with a signal transceiver, and data transmission between the devices is performed by the signal transceiver. It should be understood by those skilled in the art that the sensors and the controllers involved in the vehicle control system in the embodiment of the present invention are all provided with signal transceivers, and are not limited to the individual systems in the vehicle control system.
Optionally, based on the wireless network provided by the micro base station, the micro base station may also be used to provide a point-to-point communication service for the entire vehicle control system.
For example, taking a vehicle controller and a motor controller as an example, as shown in fig. 6, a point-to-point communication architecture is provided, which includes a micro base station, the vehicle controller, and the motor controller. Based on the communication architecture, a communication flow between the vehicle control unit and the motor controller may be as shown in fig. 7, and includes:
s101, the vehicle control unit sends a communication request to the micro base station.
Wherein the communication request is for requesting point-to-point communication with the motor controller.
In particular, the communication request includes an identification of the motor controller. When the vehicle control unit sends a control instruction to the motor controller, a communication request needs to be sent to the motor controller, and after the motor controller receives the communication request, the vehicle control unit can send the control instruction to the motor controller.
When the vehicle control unit performs point-to-point communication with the motor controller, the operating state of the motor controller needs to be determined through the micro base station, so that the vehicle control unit needs to send a communication request to the micro base station.
And S102, if the micro base station determines that the motor controller works normally, the micro base station forwards a communication request to the motor controller.
Specifically, the normal operation here means that the motor controller is powered on and can normally operate online. After receiving the communication request, the micro base station can inquire whether the motor controller is online according to the identifier of the motor controller carried by the communication request; if the motor controller is on line, the micro base station forwards the communication request to the motor controller; and if the motor controller is not on line, the micro base station returns a response rejection message to the whole vehicle controller to indicate that the motor controller is not on line and the communication request fails.
And S103, if the motor controller receives the communication request, starting point-to-point communication between the vehicle control unit and the motor controller.
Specifically, after receiving the communication request, the motor controller may determine whether to receive the communication request according to a device status, where the device status may be whether the motor controller has a fault, and when the motor controller has a fault, the motor controller may refuse to accept the communication request. Of course, the fault status here is only exemplary, and the device status may also be other status information, which does not limit the embodiment of the present invention.
If the motor controller receives the communication request of the vehicle controller, a receiving response message can be returned to the vehicle controller to indicate that the motor controller has received the communication request of the vehicle controller. At the moment, the vehicle control unit can send a control command to the motor controller, and the forwarding through the micro base station is not needed any more. Of course, if the motor controller rejects the communication request of the vehicle controller, the communication flow is ended, and the vehicle controller does not send the control command to the motor controller any more.
It should be noted that, the above example only describes a point-to-point communication flow between the vehicle controller and the motor controller, and in practice, since all devices in the vehicle control system that need to communicate in the embodiment of the present invention are all deployed with signal transceivers, point-to-point communication can be performed through a wireless network provided by the micro base station, and the point-to-point communication flow is the same as that in the above example, and is not described again here.
Optionally, the micro base station and the signal transceiver transmit and receive signals through the large-scale antenna array, the antenna structures of the micro base station and the signal transceiver may be as shown in fig. 8, and both the micro base station and the signal transceiver may transmit and receive signals through the antenna array.
Specifically, in the embodiment of the present invention, the antennas equipped in the micro base station and the signal transceiver are large-scale multiple-input multiple-output (MIMO) antennas, and each of the antenna elements may transmit data using different frequency resources based on the large-scale MIMO antenna, so that each of the antenna elements may be used as an independent antenna to receive or transmit a data signal, and each device in the vehicle control system may simultaneously transmit a data signal to another multiple devices, and may also simultaneously receive data signals transmitted by another multiple devices. For example, the vehicle control unit may simultaneously receive data signals sent by the motor controller, the anti-lock system and the air conditioning system, and may also simultaneously send data signals to the motor controller, the anti-lock system and the air conditioning system.
Optionally, the entire vehicle control system further provides a point-to-multipoint communication service based on a large-scale MIMO antenna equipped with the micro base station and the signal transceiver.
For example, taking the electronic control system as an example, as shown in fig. 9, a point-to-multipoint communication architecture is provided, which includes a micro base station, a vehicle controller, a motor controller, and an anti-lock braking system. Based on the communication architecture, the communication flow between the vehicle control unit and the motor controller and the anti-lock system can include:
s201, the vehicle control unit establishes point-to-point communication connection with the motor controller.
S202, the vehicle control unit establishes point-to-point communication connection with an anti-lock braking system.
Specifically, step S201 may include steps S101 to S103, and similarly, step S202 may also establish a communication connection between the vehicle control unit and the anti-lock braking system according to the process of steps S101 to S103, which is not described herein again for steps S201 and S202.
Based on the communication flow, the vehicle control unit is in point-to-point communication with the motor controller and/or the anti-lock braking system through the micro base station, and similarly, the vehicle control unit is also in point-to-point communication with the combination meter and/or the air conditioning system through the micro base station.
It should be noted that the point-to-point communication and the point-to-multipoint communication provided in the embodiment of the present invention may be applied to all devices in the vehicle control system. Because wired connection is not arranged among all devices in the whole vehicle control system provided by the embodiment of the invention, the devices are communicated through a wireless network, and therefore, corresponding energy modules are required to be deployed for all the devices in the whole vehicle control system to provide energy for all the devices. The energy module may be a battery module, or may be other power supply methods, and the embodiment of the present invention is not limited thereto.
Based on point-to-point communication, the communication network provided by the embodiment of the invention can effectively reduce communication time delay, improve data transmission efficiency and improve the utilization rate of frequency spectrum resources. The point-to-multipoint communication can adopt a broadcasting or multicasting mode to send data, or a single device can send data to a plurality of other devices, for example, a wheel sensor can send collected data to devices such as an anti-lock system, a vehicle body stabilizing system and a combination meter in a broadcasting or multicasting mode, so that the time delay of mutual data forwarding among the devices can be reduced, and the data transmission time can be shortened.
The micro base station and the signal transceiver provided by the embodiment of the invention can simultaneously receive data signals sent by a plurality of devices and can also simultaneously send the data signals to the plurality of devices, so that the processing efficiency of data interaction in the whole vehicle control system can be improved.
The whole vehicle control system provided by the embodiment of the invention comprises: the system comprises a vehicle control unit, a motor controller and a micro base station, wherein the vehicle control unit and the motor controller are provided with signal transceivers; the vehicle control unit is communicated with the motor controller through the signal transceiver; the vehicle control unit is used for sending a control command to the motor controller; the control instruction is used for indicating the operation of the motor controller; the motor controller is used for controlling the running state of the vehicle according to the running of the control instruction sent by the vehicle controller; the vehicle operating state includes acceleration, deceleration, and stop; and the micro base station is used for providing a wireless network for the vehicle control unit and the motor controller. The whole vehicle control system provided by the embodiment of the invention provides a wireless network covering the vehicle through the micro base station, and all systems and electronic devices in the whole vehicle control system CAN communicate with each other through the wireless network provided by the micro base station, for example, the whole vehicle controller and the motor controller communicate through the wireless network, so that the influence of wiring harness arrangement of a LIN bus and a CAN bus is avoided, the arrangement of all electronic devices in the whole vehicle control system is facilitated, and the intelligent development of the vehicle is facilitated.
The embodiment of the invention also provides an automobile which comprises the whole automobile control system provided by the embodiment.
Specifically, the vehicle may be a common fuel vehicle, or a new energy vehicle or a hybrid vehicle, and although the vehicle control systems of different types of vehicles may be different, the vehicle control system provided in the embodiment of the present invention needs to deploy signal transceivers for all devices having communication functions, so that even if the vehicle control systems of different types of vehicles are different, the vehicle control system provided in the embodiment of the present invention can be deployed for the vehicle control system, and only the signal transceivers need to be deployed for the newly added devices in the different types of vehicles, and wireless communication connection between the newly added devices and the vehicle control unit and other corresponding controllers is established.
For example, a power system of a fuel-powered vehicle is different from that of a new energy vehicle and a hybrid vehicle, the power system of the fuel-powered vehicle needs to be provided with a fuel driving device, the power system of the new energy vehicle needs to be provided with an electric driving device, and the hybrid vehicle needs to be provided with the fuel driving device and the electric driving device. The whole vehicle control system provided by the embodiment of the invention can be used for deploying signal transceivers for a fuel driving device of a fuel vehicle, an electric driving device of a new energy vehicle and both the fuel driving device and the electric driving device of a fuel-electric hybrid vehicle. When the automobile is driven, the vehicle controller of the vehicle control system can realize communication with a corresponding driving device (a fuel driving device or an electric driving device) through a wireless network provided by the micro base station, so as to control the operation of the automobile.
The whole vehicle control system provided by the embodiment of the invention can be deployed on different types of vehicles, only a signal transceiver needs to be deployed for each device needing communication in the vehicle, and wireless communication connection among the systems is established, so that the wiring harness arrangement constraint of wired connection is avoided, the newly added devices for the vehicle are facilitated, and the intelligent development of the vehicle is facilitated.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and there may be other division ways in actual implementation. For example, various elements or components may be combined or may be integrated into another device, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A vehicle control system, comprising: the system comprises a vehicle control unit, a motor controller and a micro base station, wherein the vehicle control unit and the motor controller are provided with signal transceivers; the vehicle control unit is communicated with the motor controller through the signal transceiver;
the vehicle control unit is used for sending a control instruction to the motor controller; the control instruction is used for indicating the operation of the motor controller;
the motor controller is used for controlling the running state of the vehicle according to the running of the control instruction sent by the vehicle controller; the vehicle operating state includes acceleration, deceleration, and stop;
and the micro base station is used for providing a wireless network for the vehicle control unit and the motor controller.
2. The vehicle control system of claim 1, wherein the signal transceiver comprises a transceiver antenna and a baseband chip;
the receiving and transmitting antenna is used for receiving a first electromagnetic wave signal and converting the first electromagnetic wave signal into a first electric signal;
the baseband chip is used for decoding the first electric signal;
the transceiving antenna is also used for converting a second electric signal into a second electromagnetic wave signal and sending the second electromagnetic wave signal;
the baseband chip is further configured to encode the second electrical signal.
3. The vehicle control system according to claim 2, wherein the micro base station is further configured to provide a network slicing service for the vehicle control system; the network slicing service comprises a first network slicing service and a second network slicing service, and the first network slicing service and the second network slicing service are used for providing network services for the whole vehicle control system; the first network slice and the second network slice have different time delay and bandwidth.
4. The vehicle control system of claim 3, wherein the vehicle control system comprises an electronic control system for controlling operation of a vehicle and a functional system for providing ancillary services to the operation of the vehicle;
the first network slicing service comprises a plurality of first sub-network slicing services, the second network slicing service comprises a plurality of second sub-network slicing services; the first sub-network slice service is used for providing network services for the electronic control system, the second sub-network slice service is used for providing network services for the functional system, and the time delay and the bandwidth of the first sub-network slice are different from those of the second sub-network slice.
5. The vehicle control system according to claim 4, wherein the micro base station is further configured to provide a point-to-point communication service for the vehicle control system.
6. The complete vehicle control system according to claim 5, wherein the micro base station and the signal transceiver transceive signals through a large-scale antenna array.
7. The vehicle control system of claim 6, wherein the electronic control system comprises the vehicle control unit, the motor controller, and an anti-lock braking system; and the vehicle control unit carries out point-to-point communication with the motor controller and/or the anti-lock braking system through the micro base station.
8. The vehicle control system of claim 7, wherein the functional system comprises a combination meter and an air conditioning system; and the vehicle control unit carries out point-to-point communication with the combination meter and/or the air conditioning system through the micro base station.
9. The vehicle control system of claim 8, wherein the micro base station is a fifth generation 5G base station.
10. An automobile characterized by comprising the entire vehicle control system as claimed in any one of claims 1 to 9.
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