CN217347965U

CN217347965U - Drive-by-wire chassis capable of automatically driving

Info

Publication number: CN217347965U
Application number: CN202220401848.5U
Authority: CN
Inventors: 赵俊丽; 王睿
Original assignee: Hubei Meibaokang Qing Heavy Engineering Technology Co ltd
Current assignee: Hubei Meibaokang Qing Heavy Engineering Technology Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-09-02
Anticipated expiration: 2032-02-25

Abstract

The utility model discloses an automatic drive-by-wire chassis, which comprises a frame, a front axle, a rear axle, wheels, a drive motor, a drive-by-wire power component, a vehicle control unit and a battery, wherein the drive motor is fixedly arranged on the frame, the drive motor is arranged in the middle of the battery, the vehicle control unit is connected with the drive-by-wire power component through network communication, the drive-by-wire power component comprises a motor controller, a brake controller, a battery management system, a brake inflating pump, a steering system, an all-in-one controller and a parking brake system, the battery management system is arranged on the battery, the vehicle control unit is respectively connected with the motor controller, the battery management system and the all-in-one controller through network communication, the vehicle control unit is respectively connected with the automatic drive controller through network communication, the vehicle control unit is respectively connected with the parking brake system and the steering system through network communication, the vehicle control unit is connected with an upper computer. The chassis design can meet the intelligent development requirement, and automatic driving is realized.

Description

Drive-by-wire chassis capable of automatically driving

The technical field is as follows:

the utility model belongs to the technical field of intelligent networking, more specifically relates to a drive-by-wire chassis of automatic driving.

Background art:

as shown in fig. 1 and 2, the conventional chassis can be operated manually, and cannot be driven automatically or without human. The defects are as follows: the driver is required to operate the intelligent automobile, and the intelligent development requirement cannot be met.

The utility model has the following contents:

the utility model aims at overcoming prior art's defect, to above problem, provide an autopilot drive-by-wire chassis that fixed overall dimension can reequip. The intelligent driving system is suitable for the development direction of future automobiles, meets the intelligent development requirement for chassis design, and realizes unmanned driving and automatic driving.

In order to solve the technical problem, the utility model provides a following technical scheme:

a drive-by-wire chassis for automatic driving comprises a frame 1, a front axle and front wheels 8, a rear axle and rear wheels 12, a drive motor 2, a drive-by-wire power component, a Vehicle Control Unit (VCU)10 and a battery 11 which are fixedly arranged on the frame, wherein the drive motor 2 is arranged in the middle of the battery 11, the vehicle control unit 10 is connected with the drive-by-wire power component through a Controller Area Network (CAN), the drive-by-wire power component comprises a Motor Controller (MCU)3, a brake controller (EBS)4, a Battery Management System (BMS)5, a brake inflating pump 6, a steering system (EPS)7, an all-in-one controller 9 and a parking brake system (EPB)13, the battery management system 5 is arranged on the battery 11, the vehicle control unit 10 is respectively connected with the motor controller 3, the battery management system 5 and the all-in-one controller 9 through communication of the power controller area network (EVCAN), the vehicle control unit 10 is respectively connected with an automatic driving controller (HMI) through vehicle body controller local area network (BCAN) communication, the vehicle control unit 10 is respectively connected with the brake controller 4, the parking brake system 13 and the steering system 7 through vehicle control unit local area network (PCAN) communication, and the vehicle control unit 10 is connected with an upper computer and used for calculating output torque parameters of the driving motor.

Preferably, the driving motor 2 is mounted with a motor controller 3.

Preferably, the all-in-one controller 9 includes: high voltage Power Distribution (PDU), high and low voltage converters (DCDC), and slow charging converters (OBC). The high-low voltage converter is a 12V high-low voltage converter DCDC.

Preferably, the brake controller 4 is connected with a wheel speed sensor and an anti-lock brake system (ABS regulator) for controlling the brake system.

Preferably, an electric steering controller is mounted on the steering system 7, the electric steering controller is rotatably connected with an active suspension for driving the wheels to steer, and a vertical arm is arranged on the active suspension.

Preferably, a steering angle sensor 14 is connected to a steering column of the wire control chassis, and a vehicle gravity center sensor 15 is installed at a vehicle gravity center position, and is used for providing basic data for a steering system EPS and a brake controller EBS.

Preferably, the parking brake system 13 is connected with a hand brake switch and an ASR valve, wherein the hand brake switch is used for controlling parking brake, and the ASR valve is connected with an emergency brake switch for controlling emergency brake.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses the chassis part has all used the control method of drive-by-wire, and the repacking of the repacking that can realize the autopilot repacking on chassis, supplementary driving, the repacking that man-machine drive altogether and remote driving also can repack into ordinary vehicle, has used the drive-by-wire chassis of intelligent networking technique, only needs to install these controllers and the sensor etc. that correspond with it additional when repacking into these mode of operation.

Drawings

FIG. 1 is a schematic structural diagram of a conventional chassis;

FIG. 2 is another schematic structural diagram of a conventional chassis;

FIG. 3 is a schematic structural view of the drive-by-wire chassis of the present invention for automatic driving;

FIG. 4 is a schematic circuit connection diagram of the drive-by-wire chassis of the present invention for automatic steering;

fig. 5 is a schematic view of a steering column of the drive-by-wire chassis of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1 is as shown in fig. 3 to 4, an automatic driving drive-by-wire chassis includes a frame 1, a front axle and front wheels 8, a rear axle and rear wheels 12, a drive motor 2, a drive-by-wire power component, a Vehicle Control Unit (VCU)10 and a battery 11, which are fixedly mounted on the frame, the drive motor 2 is placed in the middle of the battery 11, the vehicle control unit 10 is connected to the drive-by-wire power component through a Controller Area Network (CAN), the drive-by-wire power component includes a Motor Controller (MCU)3, a brake controller (EBS)4, a Battery Management System (BMS)5, a brake and air pump 6, a steering system (EPS)7, an all-in-one controller 9 and a parking brake system (EPB)13, the battery management system 5 is mounted on the battery 11, and the vehicle control unit 10 is respectively connected to the motor controller 3, the battery management system 5, the evc via the power Controller Area Network (CAN) communication, The vehicle control unit 10 is respectively connected with an automatic driving controller (HMI) through vehicle body controller local area network (BCAN) communication, the vehicle control unit 10 is respectively connected with a brake controller 4, a parking brake system 13 and a steering system 7 through vehicle control unit local area network (PCAN) communication, and the vehicle control unit 10 is connected with an upper computer and used for calculating output torque parameters of a driving motor.

Preferably, the driving motor 2 is mounted with a motor controller 3.

Preferably, a wheel speed sensor and an ABS regulator are connected to the brake controller (EBS)4 for controlling the brake system.

Preferably, as shown in fig. 5, a steering angle sensor 14 is connected to the steering column of the steer-by-wire chassis, and a vehicle center of gravity sensor 15 is installed at the vehicle center of gravity position, respectively, for providing basic data for the steering system EPS and the brake controller EBS.

Preferably, the parking brake system 13 is connected with a hand brake (EPB) switch for controlling the parking brake and an ASR valve connected with an emergency brake switch for controlling the emergency brake.

Preferably, the brake pump 6 supplies air to the entire service and parking brake system for braking purposes.

The frame 1 carries the functions of all system components and has a fixed external dimension to refit the 4.5T drive-by-wire chassis of automatic driving; can be convenient for the transformation of various vehicle types and various functions.

The VCU of the vehicle control unit of the chassis power system sends instructions to uniformly manage all parts. The VCU can receive the instruction and can control the coordinated operation of all parts of the whole chassis according to the instruction, so that the vehicle can move forwards, move backwards, turn, stop and park.

The operation instruction of a driver and the instruction of an upper computer are sent to the VCU, and the VCU processes, collects and analyzes the state information of the vehicle and comprehensively judges the driving intention, and then calculates parameters (steering, braking and parking direct transmission) such as motor output torque and the like, so that the motion of each drive-by-wire power component is coordinated, such as MCU \ EPS \ EPB \ EBS \ BMS \ DCDC \ OBC. When the EPS collects a steering instruction sent by the VCU, the plumbing arm is rotated to drive the wheels to steer, and when the motor controller receives a forward instruction of the VCU, the motor controller controls the motor to output forward traction so as to ensure the normal running of the electric automobile.

Refitting autopilot only need install autopilot controller and various sensor additional, the camera, these and autopilot relevant part of radar, can travel at fixed place or fixed route through program control this moment, the radar can catch the road conditions around the vehicle and with data transmission to autopilot controller when meetting the barrier or someone is through, the controller analysis can give VCU send the instruction of braking when having the information of people or barrier in the place ahead, braking system can brake under VCU's control this moment, wait the people through or walk around the barrier after a period.

The above description is only for the purpose of illustrating the embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements and the like made within the spirit and principles of the present invention by those skilled in the art should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic drive-by-wire chassis of driving, includes frame (1), front axle, rear axle and wheel, its characterized in that: the drive motor (2), the drive-by-wire power component, the vehicle control unit (10) and the battery (11) are fixedly mounted on the frame, the drive motor (2) is placed in the middle of the battery (11), the vehicle control unit is connected with the drive-by-wire power component through a controller local area network in a communication mode, the drive-by-wire power component comprises a motor controller (3), a brake controller (4), a battery management system (5), a brake inflating pump (6), a steering system (7), an all-in-one controller (9) and a parking brake system (13), the battery management system (5) is mounted on the battery (11), the vehicle control unit (10) is respectively connected with the motor controller (3), the battery management system (5) and the all-in-one controller (9) through a power controller local area network in a communication mode, the vehicle control unit (10) is respectively connected with the automatic driving controller through a vehicle body controller local area network in a communication mode, the vehicle control unit (10) is respectively connected with the brake controller (4), the parking brake system (13) and the steering system (7) through vehicle control unit local area network communication, and the vehicle control unit (10) is connected with an upper computer used for calculating output torque parameters of the driving motor (2).

2. An autonomous driving by wire chassis according to claim 1, characterized in that the drive motor (2) is provided with a motor controller (3).

3. An autonomous driving by wire chassis according to claim 1, characterized in that the all-in-one controller (9) comprises: high voltage distribution, high and low voltage converters, and slow charging converters.

4. The autonomous-capable drive-by-wire chassis of claim 3, wherein the high-low voltage converter is a 12V high-low voltage converter.

5. Autonomous driving chassis according to claim 1, characterized by the fact that the brake controller (4) is connected with wheel speed sensors and anti-lock system for controlling the braking system.

6. The automatic drive-by-wire chassis according to claim 1, characterized in that an electric steering controller is mounted on the steering system (7), the electric steering controller is rotatably connected with an active suspension for driving wheels to steer, and the active suspension is provided with a vertical arm.

7. The automatic drive-by-wire chassis of claim 1, wherein a steering angle sensor and a vehicle gravity center sensor are respectively connected to the steering column of the drive-by-wire chassis, and are used for providing basic data for a steering system and a brake controller.

8. An autonomous drive-by-wire chassis according to claim 1, characterized in that a hand brake switch for controlling the parking brake and an ASR valve connected to the emergency brake switch for controlling the emergency brake are connected to the parking brake system (13).