Chassis Domain Controller, Chassis System Architecture, and Vehicle

Abstract

The present application relates to a chassis domain controller, chassis system architecture, and vehicle, and relates to the field of automotive technology. The chassis domain controller includes: a first chip and a second chip, wherein the first chip and the second chip are connected via a serial peripheral interface (SPI) to synchronize the vehicle's braking control information; the first chip is used to obtain parameter information from multiple first sensors of the vehicle, and based on the parameter information of each of the multiple first sensors, determine the vehicle's first braking control information, and transmit the first braking control information to the vehicle's braking execution module; the second chip is used to obtain parameter information from multiple second sensors of the vehicle, and based on the parameter information of each of the multiple second sensors, determine the vehicle's second braking control information, and transmit the second braking control information to the vehicle's braking execution module. This can improve the safety of the vehicle's brake-by-wire control.

Description

Technical Field

[0001] The present application relates to the field of automotive technology, and in particular to a chassis domain controller, a chassis system architecture, and a vehicle. Background Art

[0002] With the rapid development of automotive technology, autonomous driving has become a major trend in the field. Among the technologies related to autonomous driving, brake-by-wire technology, as a technological trend in vehicle braking systems, has received widespread attention in the field.

[0003] In current brake-by-wire systems, a controller connects to electromechanical brakes installed at the wheels, and then controls the vehicle's braking via a local gateway. This approach places high demands on vehicle stability. If a problem with the local gateway prevents signal transmission to the controller, the vehicle's brakes may fail, posing a serious threat to the safety of occupants. Consequently, current brake-by-wire systems are relatively unsafe. Summary of the Invention

[0004] This application provides a chassis domain controller, chassis system architecture, and vehicle to at least address the technical issue of low safety of vehicle brake-by-wire control in related technologies. The technical solution of this application is as follows:

[0005] According to the first aspect of the present application, a chassis domain controller is provided, which includes: a first chip and a second chip, the first chip and the second chip are connected via a serial peripheral interface SPI, so as to synchronize the braking control information of the vehicle; the first chip is used to obtain parameter information of multiple first sensors of the vehicle, and based on the parameter information of each first sensor in the multiple first sensors, determine the first braking control information of the vehicle, and transmit the first braking control information to the braking execution module of the vehicle, the first sensor includes at least one of the following: a first wheel speed sensor and a second wheel speed sensor; the second chip is used to obtain parameter information of multiple second sensors of the vehicle, and based on the parameter information of each second sensor in the multiple second sensors, determine the second braking control information of the vehicle, and transmit the second braking control information to the braking execution module of the vehicle, the second sensor includes at least one of the following: a third wheel speed sensor and a fourth wheel speed sensor.

[0006] According to the above technical means, the present application can obtain vehicle parameter information based on multiple chips and multiple groups of sensors (first sensor, second sensor), and then realize braking of the vehicle based on the braking execution module to avoid the inability to realize the vehicle's wire control braking due to transmission path failure or failure of a certain chip, so as to improve the safety of the vehicle's wire control braking.

[0007] In a possible embodiment, the chassis domain controller also includes: a first braking control module and a second braking control module, and the braking execution module includes: a first brake motor and a second brake motor; the first chip is connected to the first braking control module via SPI, and the first chip is used to send first braking control information to the first braking control module; the first braking control module is used to brake the vehicle through the first brake motor according to the first braking control information; the second chip is connected to the second braking control module via SPI, and the second chip is used to send second braking control information to the second braking control module; the second braking control module is used to brake the vehicle through the second brake motor according to the second braking control information.

[0008] According to the above technical means, the present application can realize the control of the braking execution module through the first braking control module and the second braking control module, so as to complete the wire control braking of the vehicle based on the first chip and the first braking control module; the second chip and the second braking control module, realize the redundancy of the braking control, and improve the accuracy of the wire control braking.

[0009] In one possible embodiment, the first braking control module includes: a first wheel braking control module, a second wheel braking control module; the first brake motor includes: a first wheel braking motor, a second wheel braking motor; the first wheel braking control module is connected to the first wheel braking motor, and is used to brake the vehicle through the first wheel braking motor according to the first braking control information; the second wheel braking control module is connected to the second wheel braking motor, and is used to brake the vehicle through the second wheel braking motor according to the first braking control information.

[0010] According to the above technical means, the present application converts the vehicle's wire control braking into wire control braking for different wheels by setting up a first wheel brake control module and a second wheel brake control module, and then through the first wheel brake motor and the second wheel brake motor, to further improve the safety of the vehicle's wire control braking.

[0011] In one possible embodiment, the second brake control module includes: a third wheel brake control module and a fourth wheel brake control module; the second brake motor includes: a third wheel brake motor and a fourth wheel brake motor; the third wheel brake control module is connected to the third wheel brake motor, and is used to brake the vehicle through the third wheel brake motor according to the second brake control information; the fourth wheel brake control module is connected to the fourth wheel brake motor, and is used to brake the vehicle through the fourth wheel brake motor according to the second brake control information.

[0012] According to the above technical means, the present application can convert the vehicle's wire control braking into wire control braking for different wheels by setting a third wheel brake control module and a fourth wheel brake control module, and then through the third wheel brake motor and the fourth wheel brake motor, to further improve the safety of the vehicle's wire control braking.

[0013] In a possible embodiment, the chassis domain controller further includes: a plurality of signal conversion chips, each of the plurality of first sensors is connected to the first chip via a signal conversion chip, and each of the plurality of second sensors is connected to the second chip via a signal conversion chip.

[0014] According to the above technical means, the present application can set up a signal conversion chip to convert the sensor signal into a signal that is easier to process through the signal conversion chip, so that the first chip and the second chip can quickly and stably obtain parameter information of multiple sensors, thereby improving the efficiency of vehicle wire control braking.

[0015] In a possible implementation, the first sensor further includes at least one of the following: a brake pedal opening sensor, an electronic parking brake system EPB switch, a vehicle speed sensor, a yaw rate sensor, and a steering wheel angle sensor; the first chip is also connected to the vehicle's first CAN FD, and the first CAN FD is used to transmit an advanced driving assistance system ADAS signal to the first chip; the second chip is also connected to the vehicle's second CAN FD, and the second CAN FD is used to transmit an advanced driving assistance system ADAS signal to the second chip.

[0016] According to the above technical means, the present application can achieve redundancy of braking-related information through multiple sensors and CAN FD, so that vehicle braking can be close to user perception and improve vehicle braking performance.

[0017] According to the second aspect of the present application, a chassis system architecture is provided, which includes: a power supply, a chassis domain controller, and a gateway; the power supply is used to provide power to the chassis domain controller and the gateway; the chassis domain controller is used to implement the vehicle's wire control braking; the gateway is connected to the vehicle functional unit to realize information forwarding and interaction, and the vehicle functional unit includes at least one of the following: power domain, intelligent driving domain, body domain, cockpit domain, and diagnostic domain.

[0018] According to the above technical means, the present application can reduce the information transmission links by integrating the gateway into the chassis system architecture, so as to improve the information processing efficiency of the chassis system.

[0019] In one possible implementation, the chassis system architecture further includes: a vehicle networking system (TBOX); a power supply for providing electrical energy to the TBOX; the TBOX is connected to a gateway, obtains vehicle information through the gateway, and interacts with the external environment, where the external environment includes at least one of the following: a vehicle wireless communication (V2X) terminal and a cloud server.

[0020] According to the above technical means, the present application can integrate TBOX into the chassis system architecture to realize direct interaction between the chassis system and the external environment, thereby further improving the information processing efficiency of the chassis system.

[0021] In a possible implementation, the chassis system architecture further includes: a backup power supply; when the power supply is abnormal, the backup power supply provides power to the chassis domain controller, gateway, and TBOX, and generates power failure alarm information.

[0022] According to the above technical means, the present application realizes power redundancy by setting up a backup power supply to ensure that when the power supply is abnormal, power can be supplied by the backup power supply, thereby improving the safety of the chassis system.

[0023] According to a third aspect of the present application, a vehicle is provided, comprising the chassis domain controller according to the first aspect.

[0024] According to a fourth aspect of the present application, a vehicle is provided. The vehicle includes the chassis system architecture according to the second aspect.

[0025] Therefore, the above technical features of this application have the following beneficial effects:

[0026] (1) The vehicle parameter information can be acquired based on multiple chips and multiple sets of sensors (first sensor, second sensor), and the vehicle can be braked based on the brake execution module to avoid the failure of the vehicle's wire control braking due to a transmission path failure or a failure of a certain chip, thereby improving the safety of the vehicle's wire control braking.

[0027] (2) The braking execution module can be controlled by the first braking control module and the second braking control module, so as to complete the wire-controlled braking of the vehicle based on the first chip and the first braking control module; the second chip and the second braking control module realize redundancy of the braking control and improve the accuracy of the wire-controlled braking.

[0028] (3) By setting up a first wheel brake control module and a second wheel brake control module, and then using the first wheel brake motor and the second wheel brake motor, the vehicle's wire control brake can be converted into wire control brakes for different wheels, so as to further improve the safety of the vehicle's wire control brake.

[0029] (4) By setting up a third wheel brake control module and a fourth wheel brake control module, and then using the third wheel brake motor and the fourth wheel brake motor, the vehicle's wire control brake can be converted into wire control brakes for different wheels, so as to further improve the safety of the vehicle's wire control brake.

[0030] (5) A signal conversion chip can be provided to convert the sensor signal into a signal that is easier to process, so that the first chip and the second chip can quickly and stably obtain parameter information of multiple sensors, thereby improving the efficiency of vehicle wire control braking.

[0031] (6) Redundancy of brake-related information can be achieved through multiple sensors and CAN FD, so that vehicle braking can be closer to user perception and improve vehicle braking performance.

[0032] (7) By integrating the gateway into the chassis system architecture, the information transmission links can be reduced to improve the information processing efficiency of the chassis system.

[0033] (8) By integrating TBOX into the chassis system architecture, the chassis system can interact directly with the external environment, further improving the information processing efficiency of the chassis system.

[0034] (9) A backup power supply can be set up to achieve power redundancy to ensure that when the power supply is abnormal, the backup power supply can be used to supply power, thereby improving the safety of the chassis system.

[0035] It should be noted that the technical effects brought about by any implementation method in the third aspect and the fourth aspect can be referred to the technical effects brought about by the corresponding implementation methods in the first aspect and the second aspect, and will not be repeated here.

[0036] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0038] Figure 1 is a schematic structural diagram of a chassis domain controller according to an exemplary embodiment;

[0039] Figure 2 is a schematic structural diagram of another chassis domain controller according to an exemplary embodiment;

[0040] Figure 3is a schematic structural diagram of another chassis domain controller according to an exemplary embodiment;

[0041] Figure 4 is a schematic structural diagram of another chassis domain controller according to an exemplary embodiment;

[0042] Figure 5 is a schematic structural diagram of another chassis domain controller according to an exemplary embodiment;

[0043] Figure 6 is a schematic structural diagram of another chassis domain controller according to an exemplary embodiment;

[0044] Figure 7 is a structural diagram of a chassis system architecture according to an exemplary embodiment;

[0045] Figure 8 is a structural diagram illustrating another chassis system architecture according to an exemplary embodiment;

[0046] Figure 9 It is a structural diagram showing another chassis system architecture according to an exemplary embodiment.

[0047] Among them, 10-chassis domain controller, 11-first chip, 12-second chip, 13-first sensor, 14-second sensor, 15-first brake control module, 151-first wheel brake control module, 152 second wheel brake control module, 16-second brake control module, 161-third wheel brake control module, 162-fourth wheel brake control module, 17-first brake motor, 171-first wheel brake motor, 172-second wheel brake motor, 18-second brake motor, 181-third wheel brake motor, 182-fourth wheel brake motor, 19-signal conversion chip; 70-chassis system architecture, 71-power supply, 72-chassis domain controller (VMC), 73-gateway, 74-TBOX, 75-backup power supply. DETAILED DESCRIPTION

[0048] In order to enable ordinary people in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0049] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0050] The embodiment of the present application provides a chassis domain controller 10, Figure 1 A structural diagram of the chassis domain controller 10 is shown. Figure 1 As shown, the chassis domain controller 10 includes: a first chip 11 and a second chip 12. The first chip 11 and the second chip 12 are connected via a serial peripheral interface SPI to synchronize the braking control information of the vehicle.

[0051] Specifically, the first chip 11 is used to obtain a plurality of first sensors of the vehicle ( Figure 1 13), and based on the parameter information of each first sensor 13 in the multiple first sensors 13, determine the first braking control information of the vehicle, and transmit the first braking control information to the braking execution module of the vehicle, the first sensor 1313 includes at least one of the following: a first wheel speed sensor, a second wheel speed sensor.

[0052] The second chip 12 is used to obtain multiple second sensors of the vehicle ( Figure 1 14), and based on the parameter information of each second sensor 14 in the plurality of second sensors 14, determine the second braking control information of the vehicle, and transmit the second braking control information to the braking execution module of the vehicle, the second sensor 14 includes at least one of the following: a third wheel speed sensor, a fourth wheel speed sensor.

[0053] Optionally, the first wheel speed sensor, the second wheel speed sensor, the third wheel speed sensor, and the fourth wheel speed sensor may be wheel speed sensors of different wheels of the vehicle.

[0054] Exemplarily, the first wheel speed sensor may be a front left wheel speed sensor, the second wheel speed sensor may be a front right wheel speed sensor, the third wheel speed sensor may be a rear left wheel speed sensor, and the fourth wheel speed sensor may be a rear right wheel speed sensor.

[0055] It should be noted that the chassis domain controller 10 (vehicle motion control, VMC) is mainly used to implement the vehicle's wire control braking in the embodiment of the present application.

[0056] Optional, such as Figure 1 As shown, the first chip 11 and the second chip 12 can be connected via a serial peripheral interface (SPI).

[0057] It should be noted that the synchronization of the vehicle's braking control information can be the synchronization of the vehicle's sensor parameter information, such as the synchronization of the parameter information of multiple first sensors 13 obtained by the first chip 11 and the parameter information of multiple second sensors 14 obtained by the second chip 12; it can also be the synchronization of the first braking control information determined by the first chip 11 and the second braking control information determined by the second chip 12.

[0058] For example, the first chip 11 can transmit parameter information of the first wheel speed sensor and the second wheel speed sensor to the second chip 12, and the second chip 12 can transmit parameter information of the third wheel speed sensor and the fourth wheel speed sensor to the first chip 11, so that each chip can obtain parameter information of all wheel speed sensors.

[0059] It should be noted that in the embodiment of the present application, the working principles of the first chip 11 and the second chip 12 can be the same, such as using the same preset algorithm to determine the braking control information corresponding to the parameter information based on the parameter information of the sensor; they can also be different preset algorithms. For example, depending on the different wheel speed sensors connected, the preset algorithms built into each chip can also be different.

[0060] It should be noted that the parameter information of the first sensor 13 can be understood as the sensor signal transmitted by the first sensor 13. In the embodiment of the present application, the sensor signal is not limited to the signal directly connected to the first chip 11, or the signal converted by the intermediate conversion chip and then connected to the first chip 11. The parameter information of the second sensor 14 can be understood as the sensor signal transmitted by the second sensor 14. In the embodiment of the present application, the sensor signal is not limited to the signal directly connected to the second chip 12, or the signal converted by the intermediate conversion chip and then connected to the second chip 12.

[0061] According to the above technical means, the present application can obtain vehicle parameter information based on multiple chips and multiple groups of sensors (first sensor 13, second sensor 14), and then realize braking of the vehicle based on the braking execution module to avoid the inability to realize the vehicle's wire control braking due to transmission path failure or failure of a certain chip, so as to improve the safety of the vehicle's wire control braking.

[0062] It should be noted that the braking execution module of the vehicle in the embodiment of the present application is used to execute the braking control of the vehicle based on the braking control information of the first chip 11 (and / or the second chip 12), thereby realizing the vehicle's wire control braking.

[0063] In one possible implementation, Figure 2 As shown, a chassis domain controller 10 provided in an embodiment of the present application further includes: a first brake control module 15 and a second brake control module 16 , and the brake execution module includes: a first brake motor 17 and a second brake motor 18 .

[0064] Specifically, such as Figure 2 As shown, the first chip 11 is connected to the first brake control module 15 via SPI, and the first chip 11 is used to send first brake control information to the first brake control module 15; the first brake control module 15 is used to brake the vehicle through the first brake motor 17 according to the first brake control information; the second chip 12 is connected to the second brake control module 16 via SPI, and the second chip 12 is used to send second brake control information to the second brake control module 16; the second brake control module 16 is used to brake the vehicle through the second brake motor 18 according to the second brake control information.

[0065] It should be noted that the first braking control module 15 and the second braking control module 16 in the embodiment of the present application may include one or more control units. The control unit of the first braking control module 15 is mainly used to brake the vehicle according to the first braking control information of the first chip 11 and the first brake motor 17; the control unit of the second braking control module 16 is mainly used to brake the vehicle according to the second braking control information of the second chip 12 and the second brake motor 18.

[0066] According to the above technical means, the present application can realize the control of the brake execution module through the first brake control module 15 and the second brake control module 16, so as to complete the wire control braking of the vehicle based on the first chip 11 and the first brake control module 15; the second chip 12 and the second brake control module 16, realize the redundancy of the brake control, and improve the accuracy of the wire control braking.

[0067] In one possible implementation, Figure 3 As shown, in a chassis domain controller 10 provided in an embodiment of the present application, the first brake control module 15 includes: a first wheel brake control module 151 and a second wheel brake control module 152; the first brake motor 17 includes: a first wheel brake motor 171 and a second wheel brake motor 172.

[0068] Specifically, the first wheel brake control module 151 is connected to the first wheel brake motor 171, and is used to brake the vehicle through the first wheel brake motor 171 according to the first brake control information; the second wheel brake control module 152 is connected to the second wheel brake motor 172, and is used to brake the vehicle through the second wheel brake motor 172 according to the first brake control information.

[0069] It should be noted that the first wheel brake control module 151 and the second wheel brake control module 152 in the embodiment of the present application may include one or more control units, which are mainly used to determine the corresponding first wheel brake control information and second wheel brake control information based on the first brake control information of the first chip 11, and then control the front wheel brakes of the vehicle according to the first wheel brake control information and the first wheel brake motor 171, and control the rear wheel brakes of the vehicle according to the second wheel brake control information and the second wheel brake motor 172.

[0070] For example, Figure 3 As shown, the first wheel brake control module 151 may include a first wheel brake control chip and a first wheel brake motor driver, and the second wheel brake control module 152 may include a second wheel brake control chip and a second wheel brake motor driver.

[0071] Specific, combined Figure 3 The first chip 11 is connected to the first wheel brake motor control chip and sends the first braking control information to the first wheel brake motor control chip; the first wheel brake motor control chip can determine the first wheel braking information (such as the braking parameters of the first wheel) based on the first braking control information, and send the first wheel braking information to the first wheel brake motor driver; the first wheel brake motor driver controls the first wheel brake motor 171 based on the first wheel braking information, thereby realizing the front wheel braking of the vehicle.

[0072] The first chip 11 is connected to the second wheel brake motor control chip and sends the first braking control information to the second wheel brake motor control chip; the second wheel brake motor control chip can determine the second wheel braking information based on the first braking control information, and send the second wheel braking information to the second wheel brake motor driver; the second wheel brake motor driver controls the second wheel brake motor 172 to operate based on the second wheel braking information, thereby realizing front wheel braking of the vehicle.

[0073] Optional, such as Figure 3 As shown, the connection between the first chip 11 and the first wheel brake motor control chip and the second wheel brake motor control chip can be achieved through an API interface.

[0074] Optionally, the wheel brake motor may be a wheel caliper motor, for example, the first wheel brake motor 171 may be a first wheel caliper motor, and the second wheel brake motor 172 may be a second wheel caliper motor.

[0075] It should be noted that the first wheel and the second wheel in the embodiment of the present application can be wheels at different locations on the vehicle. For example, the wheel brake motor is a caliper motor, the first wheel is the front left wheel of the vehicle, the first wheel brake control module 151 is a front left brake control module (including a front left caliper motor control chip and a front left caliper motor driver), and the first wheel brake motor 171 is a front left caliper motor; the second wheel is the front right wheel, the second wheel brake control module 152 is a front right brake control module (including a front right caliper motor control chip and a front right caliper motor driver), and the second wheel brake motor 172 is a front right caliper motor.

[0076] Optionally, in some possible implementations, the second chip 12 may be connected to the first wheel brake control module and the second wheel brake control module to implement redundant control of the first wheel brake control module and the second wheel brake control module.

[0077] According to the above technical means, the present application can convert the vehicle's wire control braking into wire control braking for different wheels by setting a first wheel brake control module 151 and a second wheel brake control module 152, and then through the first wheel brake motor 171 and the second wheel brake motor 172, to further improve the safety of the vehicle's wire control braking.

[0078] In one possible implementation, Figure 4 As shown, in a chassis domain controller 10 provided in an embodiment of the present application, the second brake control module 16 includes: a third wheel brake control module 161 and a fourth wheel brake control module 162; the second brake motor 18 includes: a third wheel brake motor 181 and a fourth wheel brake motor 182.

[0079] Specifically, the third wheel brake control module 161 is connected to the third wheel brake motor 181, and is used to brake the vehicle through the third wheel brake motor 181 according to the second brake control information; the fourth wheel brake control module 162 is connected to the fourth wheel brake motor 182, and is used to brake the vehicle through the fourth wheel brake motor 182 according to the second brake control information.

[0080] It should be noted that the third wheel brake control module 161 and the fourth wheel brake control module 162 in the embodiment of the present application may include one or more control units, which are mainly used to determine the corresponding third wheel brake control information and fourth wheel brake control information based on the second brake control information of the second chip 12, and then control the front wheel brakes of the vehicle according to the third wheel brake control information and the third wheel brake motor 181, and control the rear wheel brakes of the vehicle according to the fourth wheel brake control information and the fourth wheel brake motor 182.

[0081] For example, Figure 4 As shown, the third wheel brake control module 161 may include a third wheel brake control chip and a third wheel brake motor driver, and the fourth wheel brake control module 162 may include a fourth wheel brake control chip and a fourth wheel brake motor driver.

[0082] Specific, combined Figure 4 The second chip 12 is connected to the third wheel brake motor control chip and sends the second braking control information to the third wheel brake motor control chip; the third wheel brake motor control chip can determine the third wheel braking information based on the second braking control information, and send the third wheel braking information to the third wheel brake motor driver; the third wheel brake motor driver controls the third wheel brake motor 181 based on the third wheel braking information, thereby realizing front wheel braking of the vehicle.

[0083] The second chip 12 is connected to the fourth wheel brake motor control chip and sends the second braking control information to the fourth wheel brake motor control chip; the fourth wheel brake motor control chip can determine the fourth wheel braking information based on the second braking control information, and send the fourth wheel braking information to the fourth wheel brake motor drive; the fourth wheel brake motor drive controls the fourth wheel brake motor 182 to operate based on the fourth wheel braking information, thereby realizing front wheel braking of the vehicle.

[0084] Optional, such as Figure 4 As shown, the connection between the second chip 12 and the third wheel brake motor control chip and the fourth wheel brake motor control chip can be achieved through an API interface.

[0085] Optionally, the wheel brake motor may be a wheel caliper motor, for example, the third wheel brake motor 181 may be a third wheel caliper motor, and the fourth wheel brake motor 182 may be a fourth wheel caliper motor.

[0086] It should be noted that the third and fourth wheels in the embodiments of the present application can be wheels at different locations on the vehicle. For example, the wheel brake motor is a caliper motor, the third wheel is the vehicle's rear left wheel, the third wheel brake control module 161 is a rear left brake control module (including a rear left caliper motor control chip and a rear left caliper motor driver), and the third wheel brake motor 181 is a rear left caliper motor; the fourth wheel is the vehicle's rear right wheel, the fourth wheel brake control module 162 is a rear right brake control module (including a rear right caliper motor control chip and a rear right caliper motor driver), and the fourth wheel brake motor 182 is a rear right caliper motor.

[0087] Optionally, in some possible implementations, the first chip 11 may be connected to the third wheel brake control module and the fourth wheel brake control module to implement redundant control of the third wheel brake control module and the fourth wheel brake control module.

[0088] It should be noted that the positions of the first wheel, the second wheel, the third wheel, the fourth wheel and the corresponding components (wheel brake control module, wheel brake motor) are determined only by way of example in the embodiment of the present application, and do not constitute a limitation thereto. For example, the first wheel may also be the front right wheel, the second wheel may be the rear right wheel, the third wheel may be the front left wheel, the fourth wheel may be the rear left wheel, and so on.

[0089] According to the above technical means, the present application can convert the vehicle's wire control braking into wire control braking for different wheels by setting a third wheel brake control module 161 and a fourth wheel brake control module 162, and then through the third wheel brake motor 181 and the fourth wheel brake motor 182, to further improve the safety of the vehicle's wire control braking.

[0090] In one possible implementation, Figure 5 As shown, a chassis domain controller 10 provided in an embodiment of the present application further includes: multiple signal conversion chips 19, each of the multiple first sensors 13 is connected to the first chip 11 through a signal conversion chip 19, and each of the multiple second sensors 14 is connected to the second chip 12 through a signal conversion chip 19.

[0091] It should be noted that the signal conversion chip 19 in the embodiment of the present application is mainly used to convert the electrical signals sent by the sensors (first sensor 13, second sensor 14) into digital signals, and then send them to the corresponding chips (first chip 11, second chip 12).

[0092] Optionally, each sensor (each first sensor 13 , each second sensor 14 ) may correspond to one signal conversion chip 19 , that is, one signal conversion chip 19 is connected to one sensor.

[0093] Optionally, for sensors of the same type, multiple sensors may correspond to one signal conversion chip 19 , that is, one signal conversion chip 19 may be connected to multiple sensors of the same type at the same time.

[0094] According to the above technical means, the present application can set up a signal conversion chip 19 to convert the sensor signal into a signal that is easier to process through the signal conversion chip 19, so that the first chip 11 can quickly and stably obtain parameter information of multiple sensors, thereby improving the efficiency of vehicle wire control braking.

[0095] In one possible implementation, Figure 6 As shown, in a chassis domain controller 10 provided in an embodiment of the present application, the first sensor 13 also includes at least one of the following: a brake pedal opening sensor, an electronic parking brake system EPB switch, a vehicle speed sensor, a yaw angular velocity sensor, and a steering wheel angle sensor; the first chip 11 is also connected to the first CAN FD of the vehicle, and the first CAN FD is used to transmit an advanced driving assistance system ADAS signal to the first chip 11, and the second chip 12 is also connected to the second CAN FD of the vehicle, and the second CAN FD is used to transmit an advanced driving assistance system ADAS signal to the second chip 12.

[0096] Optional, such as Figure 6 As shown, the first chip 11 can be connected to a first controller area network with a flexible data rate protocol (CAN with Flexible Data-rate, CAN FD) interface to achieve interaction with other vehicle information (such as wheel speed and other information); the second chip 12 can be connected to a second CAN FD interface to achieve redundant interaction with other vehicle information.

[0097] Optionally, in an embodiment of the present application, redundant input of the brake-by-wire signal can be achieved through advanced driving assistance system (ADAS) related signals transmitted via CAN FD.

[0098] Optionally, in an embodiment of the present application, when the first chip 11 receives information from the brake pedal opening sensor, the electronic parking brake (EPB) switch, the vehicle speed sensor, the yaw angular velocity sensor, and the steering wheel angle sensor, it can synchronize the information to the second chip 12 based on the SPI interface with the second chip 12.

[0099] According to the above technical means, the present application can achieve redundancy of braking-related information through multiple sensors and CAN FD, so that vehicle braking can be close to user perception and improve vehicle braking performance.

[0100] In one implementation, the connection between the first chip 11 (and the second chip 12) and related components in the chassis domain controller 10 of the embodiment of the present application, such as the first chip 11 and the second chip 12, the first chip 11 and the signal conversion chip 19, the first chip 11 and the first wheel brake control module, and the first chip 11 and the second wheel brake control module, can all be implemented through the SPI interface, and the connection between the remaining components can be implemented through hard-wired connections, thereby realizing a modular design of the hardware circuit and making the drive easy to reuse. The connection between the chassis domain controller 10 and the brake execution module can be implemented through hard wiring, thereby realizing the pluggable chassis domain controller 10 and improving the flexibility of the chassis domain controller 10.

[0101] The embodiment of the present application also provides a chassis system architecture, Figure 7 A structural diagram of the chassis system architecture is shown in FIG. Figure 7 As shown, the chassis system architecture 70 includes: a power supply 71 , a chassis domain controller (VMC) 72 , and a gateway 73 .

[0102] Specifically, the power supply 71 is used to provide power to the chassis domain controller and the gateway 73; the chassis domain controller is used to realize the vehicle's wire control braking; the gateway 73 is connected to the vehicle functional unit to realize information forwarding and interaction. The vehicle functional unit includes at least one of the following: power domain, intelligent driving domain (smart driving domain), body domain, cockpit domain, and diagnostic domain.

[0103] Optionally, the gateway 73 can be connected to the vehicle functional units through a communication network, and the connection method can be CAN, CAN FD, Ethernet, SPI and other forms of connection. Various vehicle functional units can be connected to the gateway 73 using the same connection method or different connection methods.

[0104] Exemplarily, the intelligent driving domain and the cockpit domain are connected to the gateway 73 via Ethernet, and the power domain, the body domain and the diagnostic domain are connected to the gateway 73 via CAN / CAN FD.

[0105] Optionally, information from the power domain, intelligent driving domain, body domain, and cockpit domain can be forwarded through the gateway 73, thereby completing cross-domain information interaction.

[0106] Exemplarily, the diagnostic domain can obtain relevant information of the power domain, intelligent driving domain, body domain, and cockpit domain through the gateway 73, so as to determine whether there are problems in the power domain, intelligent driving domain, body domain, and cockpit domain.

[0107] Optionally, the connection form between the gateway 73 and the vehicle functional unit can be selected based on business needs, such as the communication bandwidth between controllers, real-time performance, and whether a physical connection is required.

[0108] Optionally, the power supply 71 may be a system basis chip (SBC), a switching power supply 71 (DCDC), a linear voltage regulator (LDO), or the like.

[0109] Optionally, the supply voltage range of the power supply 71 may be adjusted in combination, for example, the supply voltage range of the power supply 71 may be 1.25V-12V.

[0110] Optionally, the chassis domain controller 72 may be the chassis domain controller 10 in the above embodiment, or may be other chassis domain controllers in the relevant technical field.

[0111] According to the above technical means, the present application can reduce the information transmission links by integrating the gateway 73 into the chassis system architecture, so as to improve the information processing efficiency of the chassis system.

[0112] In one possible implementation, Figure 8 As shown, a chassis system architecture 70 provided in an embodiment of the present application also includes: a vehicle networking system TBOX74.

[0113] Specifically, the power supply 71 is used to provide power to the TBOX74; the TBOX74 is connected to the gateway 73, obtains vehicle information through the gateway 73, and interacts with the external environment, which includes at least one of the following: a vehicle wireless communication V2X terminal and a cloud server.

[0114] Optionally, a telematics box (TBOX74), also known as an on-board T-BOX or an on-board connected terminal, can be connected to external environment terminals (such as cloud servers and V2X terminals) through a communication network.

[0115] Optionally, the connection methods of TBOX74 with the external environment may include various mobile communication methods such as the fourth generation mobile communication system (4G), the fifth generation mobile communication system (5G), Bluetooth, and wireless fidelity (WIFI). The specific connection method can be selected based on specific business needs, such as communication bandwidth, cost ratio, technology, and other different requirements.

[0116] Optional, V2X terminal, mainly refers to other vehicle terminals, road equipment terminals and other equipment with information interaction functions.

[0117] Optionally, the chassis domain controller, gateway 73 and TBOX74 in the embodiment of the present application can be integrated into a printed circuit board (PCB), or can be connected through a flexible printed circuit (FPC).

[0118] Based on the above technical means, TBOX74 can be integrated into the chassis system architecture to achieve direct interaction between the chassis system and the external environment, further improving the information processing efficiency of the chassis system.

[0119] In one possible implementation, Figure 9 As shown, a chassis system architecture 70 provided in an embodiment of the present application further includes: a backup power supply 75.

[0120] Specifically, when the power supply of the power supply 71 is abnormal, the backup power supply 75 provides power to the chassis domain controller, the gateway 73 and the TBOX74, and generates power supply 71 fault alarm information.

[0121] Optionally, when the chassis system detects that the power supply 71 is abnormal, the backup power supply 75 can be started to power the chassis domain controller, gateway 73, TBOX74 and other electrical components to ensure that each electrical component can operate normally.

[0122] Optionally, when an abnormal power supply of the power supply 71 is detected, a power supply 71 fault alarm message can be generated by generating a corresponding fault code, lighting a fault light, and other operations to remind the driver and other users or maintenance personnel to check and repair the chassis controller and vehicle-related components.

[0123] Optionally, a corresponding fault code can be generated and / or a corresponding fault light can be turned on based on the specific abnormality level of the power supply 71, such as complete loss of power supply capability, power, voltage, current and other parameters not meeting set conditions, and other abnormalities that cannot meet power demand.

[0124] Optional, such as Figure 9 As shown, the power supply 71 and the backup power supply 75 can be integrated together to achieve timely switching of the power supply to the backup power supply 75 when the power supply of the power supply 71 is abnormal.

[0125] According to the above technical means, a backup power supply 75 can be provided to achieve power redundancy, so as to ensure that when the power supply 71 is abnormal, power can be supplied by the backup power supply 75, thereby improving the safety of the chassis system.

[0126] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the system. In order to realize the above functions, the vehicle collision unlocking system includes hardware structures and / or software modules corresponding to the execution of each function. It should be easy for those skilled in the art to realize that, in combination with the modules and units of the various examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0127] The embodiment of the present application can, based on the above system, exemplarily divide the vehicle collision unlocking system into functional modules. For example, the vehicle collision unlocking system can include various functional modules corresponding to the various functional divisions, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0128] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete the full classification or partial functions described above.

[0129] In an exemplary embodiment, the present application also provides a vehicle, which includes the above-mentioned chassis domain controller.

[0130] In an exemplary embodiment, the present application further provides a vehicle comprising the above-mentioned chassis system architecture.

[0131] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0132] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0133] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0134] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the full classification part or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute the full classification part or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks or optical disks.

[0135] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A chassis domain controller, characterized in that: The chassis domain controller includes: a first chip and a second chip, wherein the first chip and the second chip are connected via a serial peripheral interface SPI, and are used to synchronize the braking control information of the vehicle; The first chip is configured to obtain parameter information of a plurality of first sensors of the vehicle, determine first brake control information of the vehicle based on the parameter information of each of the plurality of first sensors, and transmit the first brake control information to a brake execution module of the vehicle, wherein the first sensors include at least one of the following: a first wheel speed sensor and a second wheel speed sensor; The second chip is used to obtain parameter information of multiple second sensors of the vehicle, and determine second brake control information of the vehicle based on the parameter information of each second sensor in the multiple second sensors, and transmit the second brake control information to a brake execution module of the vehicle, wherein the second sensor includes at least one of the following: a third wheel speed sensor and a fourth wheel speed sensor; The chassis domain controller further includes: a first brake control module and a second brake control module, and the brake execution module includes: a first brake motor and a second brake motor; The first chip is connected to the first brake control module via SPI, and the first chip is used to send the first brake control information to the first brake control module; The first brake control module is configured to brake the vehicle via the first brake motor according to the first brake control information; The second chip is connected to the second brake control module via SPI, and the second chip is used to send the second brake control information to the second brake control module; The second brake control module is used to brake the vehicle through the second brake motor according to the second brake control information.

2. The chassis domain controller according to claim 1, characterized in that: The first brake control module includes: a first wheel brake control module and a second wheel brake control module; the first brake motor includes: a first wheel brake motor and a second wheel brake motor; The first wheel brake control module is connected to the first wheel brake motor and is used to brake the vehicle through the first wheel brake motor according to the first brake control information; The second wheel brake control module is connected to the second wheel brake motor and is configured to brake the vehicle through the second wheel brake motor according to the first brake control information.

3. The chassis domain controller according to claim 1 or 2, characterized in that: The second brake control module includes: a third wheel brake control module and a fourth wheel brake control module; the second brake motor includes: a third wheel brake motor and a fourth wheel brake motor; The third wheel brake control module is connected to the third wheel brake motor and is used to brake the vehicle through the third wheel brake motor according to the second brake control information; The fourth wheel brake control module is connected to the fourth wheel brake motor and is configured to brake the vehicle through the fourth wheel brake motor according to the second brake control information.

4. The chassis domain controller according to claim 1, characterized in that: The chassis domain controller also includes: multiple signal conversion chips, each of the multiple first sensors is connected to the first chip through a signal conversion chip, and each of the multiple second sensors is connected to the second chip through a signal conversion chip.

5. The chassis domain controller according to claim 1, characterized in that: The first sensor also includes at least one of the following: a brake pedal opening sensor, an electronic parking brake system EPB switch, a vehicle speed sensor, a yaw angular velocity sensor, and a steering wheel angle sensor; the first chip is also connected to the vehicle's first CAN FD, and the first CAN FD is used to transmit an advanced driving assistance system ADAS signal to the first chip, and the second chip is also connected to the vehicle's second CAN FD, and the second CAN FD is used to transmit an advanced driving assistance system ADAS signal to the second chip.

6. A chassis system architecture, characterized in that: The chassis system architecture includes: a power supply, a chassis domain controller according to any one of claims 1 to 5, and a gateway; The power supply is used to provide power to the chassis domain controller and the gateway; The chassis domain controller is used to implement the vehicle's brake-by-wire control; The gateway is connected to the vehicle functional unit to realize information forwarding and interaction. The vehicle functional unit includes at least one of the following: power domain, intelligent driving domain, body domain, cockpit domain, and diagnosis domain.

7. The chassis system architecture according to claim 6, characterized in that: The chassis system architecture also includes: a vehicle networking system TBOX; The power supply is used to provide electrical energy to the TBOX; The TBOX is connected to the gateway, obtains vehicle information through the gateway, and interacts with the external environment, where the external environment includes at least one of the following: a vehicle wireless communication V2X terminal and a cloud server.

8. The chassis system architecture according to claim 6 or 7, characterized in that: The chassis system architecture also includes: a backup power supply; When the power supply is abnormal, the backup power supply provides power to the chassis domain controller, the gateway and the TBOX, and generates power failure alarm information.

9. A vehicle, characterized in that: Comprising a chassis domain controller as described in any one of claims 1-5.

10. A vehicle, characterized in that: Comprising the chassis system architecture according to any one of claims 6-8.

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