CN116373825A - Redundant braking system for vehicle - Google Patents
Redundant braking system for vehicle Download PDFInfo
- Publication number
- CN116373825A CN116373825A CN202211732053.3A CN202211732053A CN116373825A CN 116373825 A CN116373825 A CN 116373825A CN 202211732053 A CN202211732053 A CN 202211732053A CN 116373825 A CN116373825 A CN 116373825A
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- Prior art keywords
- controller
- brake
- ebs
- braking
- valve
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- 230000002457 bidirectional effect Effects 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 12
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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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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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a redundant braking system for a vehicle, which belongs to the field of vehicle braking systems and solves the problem that the braking system has potential safety hazards. The invention is mainly used for enabling the braking of the vehicle to be more stable and reliable.
Description
[ field of technology ]
The invention discloses a redundant braking system for a vehicle, and belongs to the technical field of vehicle braking systems.
[ background Art ]
With the continuous development of the automobile industry, the safety degree of the transportation industry is also getting more and more attention. The braking system is used as a key system for ensuring the safe running of the vehicle, and the functions and the structures of the braking system are continuously improved and perfected.
In order to ensure the running safety of the vehicle, two sets of brake control systems are generally adopted in the prior art, when the main control system fails, the auxiliary control system can still realize braking on the vehicle, so that the potential safety hazard in the running process of the vehicle is reduced, but when the main control system and the auxiliary control system fail, traffic accidents still occur easily, and therefore, certain potential safety hazard still exists when the two sets of brake control systems are adopted.
[ invention ]
The invention aims to solve the problem that the brake system has potential safety hazards, and provides a redundant brake system for a vehicle, so that the vehicle is braked more stably and reliably.
The technical problems are solved, and the invention adopts the following technical scheme:
the first control system comprises a first VCU controller and a first EBS controller, the second control system comprises a second VCU controller and a second EBS controller, the first EBS controller and the second EBS controller are used for controlling a braking device of the vehicle according to the vehicle running state acquired by the first VCU controller and the second VCU controller respectively, a bidirectional selection valve is arranged at the braking device, the first control system and the second control system are connected with the braking device through the bidirectional selection valve, the second control system further comprises an emergency braking system connected with the braking device, the emergency braking system comprises an emergency controller and a detection device, the detection device is connected with the second VCU controller and the second EBS controller respectively, and the detection device is used for detecting the running condition of the second EBS controller and the connection condition of the second VCU controller and the second EBS controller, and the braking device is stopped when the second EBS controller fails to run or the second VCU controller and the second EBS controller are connected with the emergency brake device.
The beneficial effects of the invention are as follows:
the first control system is a main control system, the second control system is a secondary control system, under a normal state, the first VCU controller collects signals of an accelerator pedal, a gear, a brake pedal and the like, the first EBS controller controls the brake device to realize braking according to the signals collected by the first VCU controller, when the first control system breaks down, the second control system controls the brake device to realize braking, the second control system also comprises an emergency brake system connected with the brake device, the emergency brake system comprises an emergency controller and a detection device, the detection device detects the running condition of the second EBS controller and the connection condition of the second VCU controller and the second EBS controller, and when the second EBS controller breaks down or the connection between the second VCU controller and the second EBS controller is interrupted, the emergency brake system is started and controls the brake device to realize braking, when the first control system and the second control system can not normally run, the emergency brake system can realize firm running safety hazards of the vehicle through the emergency brake system, and the running safety hazards of the running safety and safety of the running safety system are further improved; in addition, the bidirectional selection valve can avoid the first control system and the second control system to control the braking device at the same time, and when the first control system is communicated with the bidirectional selection valve, the bidirectional selection valve is isolated from the second control system; and when the second control system is communicated with the bidirectional selection valve, the bidirectional selection valve is isolated from the first control system, so that only the first control system or the second control system is ensured to operate, the first control system and the second control system are prevented from collision, and the operation stability of the invention is further improved.
Preferably, the first control system comprises a first air source which is communicated with the bidirectional selector valve, the first EBS controller controls the first air source to provide compressed air for the bidirectional selector valve, the second control system comprises a second air source which is communicated with the bidirectional selector valve, and the second EBS controller controls the second air source to provide compressed air for the bidirectional selector valve.
Preferably, a control valve is arranged between the second air source and the bidirectional selection valve, the second EBS controller and the emergency controller are both connected with the control valve, and the second EBS controller and the emergency controller control the second air source to supply compressed air to the bidirectional selection valve through the control valve.
Preferably, a brake valve is arranged between the first air source and the bidirectional selection valve, the first EBS controller is connected with the brake valve, and the first EBS controller controls the first air source to supply compressed air to the bidirectional selection valve through the brake valve.
Preferably, a first CAN bus is provided between the first VCU controller and the first EBS controller, and a second CAN bus is provided between the second VCU controller and the second EBS controller.
Preferably, the first control system further comprises a first power supply device for supplying power to the first EBS controller, and the second control system further comprises a second power supply device for supplying power to the second EBS controller.
Preferably, the braking device comprises a front axle brake and a rear axle brake, the front axle brake comprises a left front braking unit and a right front braking unit, the rear axle brake comprises a left rear braking unit and a right rear braking unit, and the left front braking unit and the right front braking unit are connected with ABS electromagnetic valves.
Preferably, the front axle brake and the rear axle brake are both provided with electromagnetic valve adjusting devices, wherein the electromagnetic valve adjusting devices of the front axle brake are single channels, and the electromagnetic valves of the rear axle brake are double channels.
Preferably, the braking device is provided with a wheel speed sensor, and the wheel speed sensor comprises a left front wheel speed sensing unit, a right front wheel speed sensing unit, a left rear wheel speed sensing unit and a right rear wheel speed sensing unit, and the left front wheel speed sensing unit, the right front wheel speed sensing unit, the left rear wheel speed sensing unit and the right rear wheel speed sensing unit are all connected with the first EBS controller and the second EBS controller.
Preferably, the first air source comprises a front axle air reservoir and a rear axle air reservoir, the front axle air reservoir is connected with a front axle brake, and the rear axle air reservoir is connected with a rear axle brake.
Other features and advantages of the present invention will be disclosed in the following detailed description of the invention and the accompanying drawings.
[ description of the drawings ]
The invention is further described with reference to the accompanying drawings:
fig. 1 is a schematic diagram of an embodiment of the present invention.
Reference numerals: the system comprises a first VCU controller, a first EBS controller, a 13ESC sensor, a 141 front axle air storage cylinder, a 142 rear axle air storage cylinder, a first power supply device, a 16 brake valve, a second VCU controller, a second EBS controller, a 231 emergency controller, a 232 detection device, a second air source, a second power supply device, a 31 bidirectional selection valve, a 32 electromagnetic valve adjusting device, a 331 left front brake unit, a 332 right front brake unit, a 333 left rear brake unit, a 334 right rear brake unit, a 34ABS electromagnetic valve, a 351 left front wheel speed sensing unit, a 352 right front wheel speed sensing unit, a 353 left rear wheel speed sensing unit, a 354 right rear wheel speed sensing unit, a 4 trailer module, a 41 trailer air source and 42.
[ detailed description ] of the invention
The technical solutions of the embodiments of the present invention will be explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Embodiment one:
as shown in fig. 1, the present embodiment illustrates a redundant brake system for a vehicle, including a first control system and a second control system, where the first control system includes a first VCU controller 11 and a first EBS controller 12, the second control system includes a second VCU controller 21 and a second EBS controller 22, the first EBS controller 12 and the second EBS controller 22 control a brake device of the vehicle according to a vehicle operation state acquired by the first VCU controller 11 and the second VCU controller 21, respectively, the brake device is provided with a bidirectional selection valve 31, the first control system and the second control system are connected with the brake device through the bidirectional selection valve 31, the second control system further includes an emergency brake system connected with the brake device, the emergency brake system includes an emergency controller 231 and a detection device 232, the detection device 232 is connected with the second VCU controller 21 and the second EBS controller 22, respectively, and the detection device 232 is used for detecting an operation condition of the second vcs controller 22 and the second VCU controller 21 and the second EBS controller 22 are connected with the second EBS controller 22, or the emergency brake device 231 is connected with the second EBS controller 22 when the emergency brake device is disconnected.
The first control system in this embodiment includes a first air source, the first air source is communicated with the bi-directional selector valve 31, a brake valve 16 is disposed between the first air source and the bi-directional selector valve 31, the first EBS controller 12 is connected with the brake valve 16, and the first EBS controller 12 controls the first air source to supply compressed air to the bi-directional selector valve 31 through the brake valve 16. When the first control system is in a normal state, the first VCU controller 11 collects signals of an accelerator pedal, a gear, a brake pedal and the like, the first EBS controller 12 calculates a deceleration required by the brake device according to the signals collected by the first VCU controller 11, the first EBS controller 12 controls the brake valve 16 to open according to a calculation result, and the first air source supplies compressed air to the brake device, so that the brake device realizes braking.
The second control system comprises a second air source 24, the second air source 24 is communicated with a bidirectional selector valve 31, a control valve is arranged between the second air source 24 and the bidirectional selector valve 31, the control valve is integrated in the second EBS controller 22, the second EBS controller 22 and the emergency controller 231 are both connected with the control valve, and the second EBS controller 22 and the emergency controller 231 control the second air source 24 to supply compressed air to the bidirectional selector valve 31 through the control valve.
When the first control system fails and cannot normally operate, the second VCU controller 21 collects signals of an accelerator pedal, a gear, a brake pedal, and the like, the second EBS controller 22 calculates a deceleration required by the brake device according to the signals collected by the second VCU controller 21, the second EBS controller 22 opens a control valve according to a calculation result, and the second air source 24 provides compressed air to the brake device to enable the brake device to brake.
When the first control system and the second control system are both in failure, the emergency controller 231 enables the control valve to be opened, and then the second air source 24 provides compressed air for the braking device to enable the braking device to realize braking, the emergency braking system can be used as a second heavy safety, and when the first control system and the second control system cannot normally operate, emergency braking can be realized through the emergency braking system, so that the operation of the braking system is firmer and more reliable, the potential safety hazard of vehicle running is reduced, and the safety of vehicle running is improved.
A first CAN bus is disposed between the first VCU controller 11 and the first EBS controller 12 in this embodiment, and the first CAN bus is configured to transmit signals collected by the first VCU controller 11 to the first EBS controller 12; a second CAN bus is disposed between the second VCU controller 21 and the second EBS controller 22, the second CAN bus is configured to transmit signals collected by the second VCU controller 21 to the second EBS controller 22, the detecting device 232 is respectively connected to the second VCU controller 21 and the second EBS controller 22, signals collected by the second VCU controller 21 are simultaneously transmitted to the second EBS controller 22 and the detecting device 232, when the detecting device 232 detects that the second EBS controller 22 does not receive signals, that is, a connection between the second VCU controller 21 and the second EBS controller 22 fails, at this time, the emergency controller 231 is started, and the control valve is opened, so that the second air source 24 provides compressed air to the braking device, and the braking device achieves braking.
The first control system further includes a first power supply device 15 for supplying power to the first EBS controller 12, and the second control system further includes a second power supply device 25 for supplying power to the second EBS controller 22, where the first EBS controller 12 is connected with the ESC sensor 13, so that the vehicle can be more stable and safe when changing lanes or passing a curve.
The braking device in this embodiment includes a front axle brake and a rear axle brake, the front axle brake includes a left front braking unit 331 and a right front braking unit 332, the rear axle brake includes a left rear braking unit 333 and a right rear braking unit 334, the left front braking unit 331 and the right front braking unit 332 are all connected with ABS electromagnetic valves 34, the front axle brake and the rear axle brake are all provided with electromagnetic valve adjusting devices 32, the electromagnetic valve adjusting devices 32 are connected with the bidirectional selector valve 31, wherein the electromagnetic valve adjusting devices 32 of the front axle brake are single channels, and the electromagnetic valves of the rear axle brake are double channels.
The braking device in this embodiment is provided with a wheel speed sensor including a left front wheel speed sensing unit 351, a right front wheel speed sensing unit 352, a left rear wheel speed sensing unit 353, and a right rear wheel speed sensing unit 354, each of which is connected to the first and second EBS controllers 12 and 22.
In this embodiment, the first air source includes a front axle air reservoir 141 and a rear axle air reservoir 142, the front axle air reservoir 141 is connected with a front axle brake, the rear axle air reservoir 142 is connected with a rear axle brake, the front axle air reservoir 141 is connected with a trailer module 4, the trailer module 4 is connected with a trailer air source 41 and a trailer air controller 42, the control valve and the second air source 24 are both connected with the trailer module 4 through a bidirectional selection valve 31, an ABS electromagnetic valve 34 and an ASR electromagnetic valve are arranged between the second air source 24 and the trailer module 4, wherein the ABS is a brake anti-lock system, and when a vehicle brakes, the magnitude of braking force of a brake unit is automatically controlled so that the wheel is not locked, and is in a state of rolling and sliding at the edge so as to ensure that the adhesion force between the wheel and the ground is at the maximum; the ASR is a driving wheel anti-slip system, when the wheels slip, the ASR judges the wheel slip by comparing the rotation speeds of the wheels, and automatically and immediately reduces the air inflow and the rotation speed of the engine, thereby reducing the power output and braking the driving wheels which slip.
While the invention has been described in terms of embodiments, it will be appreciated by those skilled in the art that the invention is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (10)
1. A redundant braking system for a vehicle, comprising a first control system including a first VCU controller and a first EBS controller, and a second control system including a second VCU controller and a second EBS controller, the first EBS controller and the second EBS controller controlling a braking device of the vehicle according to vehicle operating conditions acquired by the first VCU controller and the second VCU controller, respectively, characterized in that: the first control system and the second control system are connected with the braking device through the bidirectional selection valves, the second control system further comprises an emergency braking system connected with the braking device, the emergency braking system comprises an emergency controller and a detection device, the detection device is connected with the second VCU controller and the second EBS controller respectively, the detection device is used for detecting the running condition of the second EBS controller and the connection condition of the second VCU controller and the second EBS controller, and when the running fault of the second EBS controller or the connection interruption of the second VCU controller and the second EBS controller occurs, the emergency controller controls the braking device to realize braking.
2. A redundant brake system for a vehicle in accordance with claim 1 wherein: the first control system comprises a first air source which is communicated with the bidirectional selector valve, the first EBS controller controls the first air source to provide compressed air for the bidirectional selector valve, the second control system comprises a second air source which is communicated with the bidirectional selector valve, and the second EBS controller controls the second air source to provide compressed air for the bidirectional selector valve.
3. A redundant brake system for a vehicle in accordance with claim 2 wherein: and a control valve is arranged between the second air source and the bidirectional selection valve, the second EBS controller and the emergency controller are connected with the control valve, and the second EBS controller and the emergency controller control the second air source to supply compressed air to the bidirectional selection valve through the control valve.
4. A redundant brake system for a vehicle in accordance with claim 2 wherein: and a brake valve is arranged between the first air source and the bidirectional selection valve, the first EBS controller is connected with the brake valve, and the first EBS controller controls the first air source to supply compressed air to the bidirectional selection valve through the brake valve.
5. A redundant brake system for a vehicle in accordance with claim 1 wherein: a first CAN bus is arranged between the first VCU controller and the first EBS controller, and a second CAN bus is arranged between the second VCU controller and the second EBS controller.
6. A redundant brake system for a vehicle in accordance with claim 1 wherein: the first control system further includes a first power supply device that provides power to the first EBS controller, and the second control system further includes a second power supply device that provides power to the second EBS controller.
7. A redundant brake system for a vehicle in accordance with claim 1 wherein: the braking device comprises a front axle brake and a rear axle brake, wherein the front axle brake comprises a left front braking unit and a right front braking unit, the rear axle brake comprises a left rear braking unit and a right rear braking unit, and the left front braking unit and the right front braking unit are connected with an ABS electromagnetic valve.
8. A redundant brake system for a vehicle in accordance with claim 7 wherein: the front axle brake and the rear axle brake are both provided with electromagnetic valve adjusting devices, wherein the electromagnetic valve adjusting devices of the front axle brake are single channels, and the electromagnetic valves of the rear axle brake are double channels.
9. A redundant brake system for a vehicle in accordance with claim 7 wherein: the braking device is provided with a wheel speed sensor, and the wheel speed sensor comprises a left front wheel speed sensing unit, a right front wheel speed sensing unit, a left rear wheel speed sensing unit and a right rear wheel speed sensing unit which are all connected with a first EBS controller and a second EBS controller.
10. A redundant brake system for a vehicle in accordance with claim 7 wherein: the first air source comprises a front axle air reservoir and a rear axle air reservoir, the front axle air reservoir is connected with a front axle brake, and the rear axle air reservoir is connected with a rear axle brake.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202211732053.3A CN116373825A (en) | 2022-12-30 | 2022-12-30 | Redundant braking system for vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202211732053.3A CN116373825A (en) | 2022-12-30 | 2022-12-30 | Redundant braking system for vehicle |
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CN116373825A true CN116373825A (en) | 2023-07-04 |
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CN202211732053.3A Pending CN116373825A (en) | 2022-12-30 | 2022-12-30 | Redundant braking system for vehicle |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117885707A (en) * | 2024-03-18 | 2024-04-16 | 厦门中科星晨科技有限公司 | Automatic driving braking method based on port closed area |
-
2022
- 2022-12-30 CN CN202211732053.3A patent/CN116373825A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117885707A (en) * | 2024-03-18 | 2024-04-16 | 厦门中科星晨科技有限公司 | Automatic driving braking method based on port closed area |
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