CN218431224U - Vehicle redundant braking system - Google Patents
Vehicle redundant braking system Download PDFInfo
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- CN218431224U CN218431224U CN202222290505.9U CN202222290505U CN218431224U CN 218431224 U CN218431224 U CN 218431224U CN 202222290505 U CN202222290505 U CN 202222290505U CN 218431224 U CN218431224 U CN 218431224U
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Abstract
The utility model relates to a redundant braking system of vehicle belongs to braking technical field, and it has solved among the prior art that braking system's redundancy still exists the risk and can not look after the problem of the vehicle more than the tricycle axle. The redundant braking system comprises a braking request device, an axle, a brake and a control unit, wherein a first communication data line is arranged between the axle control unit and the brake; the first communication data line is used for connecting the inside of the axle, a second communication data line is further arranged between the adjacent axles, and the second communication data line is sequentially connected with the control unit and the brake on the axle adjacent to the axle where the control unit is located. The second communication data line is a redundant braking configuration of the first communication data line, each line is sequentially and alternately connected with the control unit and the brake, on the basis of the first communication data line, faults between adjacent axles are tested and improved, the distribution of braking force on the whole vehicle is ensured to be more uniform, and the adjacent axles are enabled to realize more stable and reliable braking.
Description
Technical Field
The utility model belongs to the technical field of the braking, in particular to redundant braking system configuration.
Background
The utility model publication number WO2021115827A1 discloses a brake system of a utility vehicle with a first control unit, which first control unit (27) is connected to the brake unit via a bus system (45, 46). The connected electric air wheel (1) connects the service brake chambers (20) of the combined brake cylinders (19) and electronically controls the wheel brake units (1) via the buses (45, 46) to control the combined brake cylinders (19) of the service brake chambers, the pneumatic brake pressures (20) of which are based on the brake request. The second control unit (29) is connected to the electro-pneumatic wheel brake unit (1) via a bus (45, 46) and electrically controls the wheel brake unit (1) via the L-center of the bus system (45, 46) in order to control the pneumatic brake pressure of the combined brake cylinder (19) using the brake chamber (20) on the basis of a brake request.
In the prior art, the bus system (45, 46) is two data transmission lines which are not substantially different, and the bus system is designed to prevent a problem of one line 45 or 46 and then enable the other line to transmit data, so that the redundant design of the brake system is ensured. However, since the data transmission lines provided in the 45 and 46 bus systems are substantially the same in structure, there is still a great risk that the two lines will generate error signals, and therefore, it is necessary to design a redundant brake system that is not formed by two substantially identical transmission lines.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the above-mentioned problem to current technique, provided the redundant braking system of vehicle that the communication data line that uses is incomplete the same.
In order to realize innovation, the purpose of the utility model can be realized by the following technical proposal: a redundant braking system of a vehicle comprises a braking request device, axles, brakes and a control unit, wherein the axles comprise first axles, the brakes comprise first brakes on the first axles, the control unit further comprises first axle control units on the first brakes, and first communication data lines are arranged between the first axle control units and the first brakes; the axle further comprises a second axle, the brake further comprises a second brake on the second axle, the control unit further comprises a second axle control unit on the second brake, and a first communication data line is also arranged between the second axle control unit and the second axle controller; the first communication data line is used for being connected inside the axle, when a vehicle brake system is free of faults, the first axle control unit and the second axle control unit can respectively acquire brake request signals and can also acquire other signals such as vehicle speed, vehicle weight, steering angle and the like, braking forces required by brakes on wheels on two sides of the axle are respectively calculated, and finally the first communication data line transmits the braking force signals of the first axle control unit to the first brake and transmits the braking force signals of the second axle control unit to the second brake.
And a second communication data line is also arranged between the adjacent axles and is sequentially connected with the control unit and the brake on the axle adjacent to the axle on which the control unit is arranged. The second communication data line is the redundant braking configuration of the first communication data line, and each line is sequentially and alternately connected with the control unit and the brake, so that on the basis of the first communication data line, faults between adjacent axles are verified and improved, the distribution of braking force on the whole vehicle is ensured to be more uniform, and the adjacent axles are enabled to realize more stable and reliable braking.
In the redundant braking system of the vehicle, the axle further includes a third axle, the brake includes a third brake on the third axle, the control unit further includes a third axis control unit on the third brake, and a first communication data line is arranged between the third axis control unit and the third brake; the axle further comprises a fourth axle, the brake comprises a fourth brake on the fourth axle, the control unit further comprises a fourth axle control unit on the fourth brake, and a first communication data line is also arranged between the fourth axle control unit and the fourth brake;
in the vehicle redundant brake system, the vehicle redundant brake system further comprises a third communication data line, and the third communication data line is connected with all the control units. And the third communication data lines are connected with the control units of all the axles, safety redundancy configuration is realized again on the basis of the first communication data lines and the second communication data lines, mutual verification is carried out among the control units of all the axles, and if the control unit of one axle has obvious abnormal conditions, for example, the difference between the calculated braking force and the calculated values of the control units of the other axles is large, the braking signals of the control units of the other axles can be transmitted to the control units of the other axles for use, or the braking of the axle is stopped, and the other axles complete braking. So that after a failure of a single axle or wheel brake or the like on the axle, it can be identified and improved by the third communication data line.
In the redundant braking system of the vehicle, the second communication data line is sequentially and alternately connected with the control unit on the odd axle and the brake on the even axle; and the second communication data line is also sequentially and alternately connected with the control unit on the even axle and the brake on the odd axle. And each line is arranged at intervals, so that the faults among vehicles at intervals can be effectively improved, and the braking force among axles at intervals is ensured to be more reliable.
In the above vehicle redundant brake system, the second communication data line includes a first line, and the first line is connected to the first axis control unit, the third axis control unit, the second brake and the fourth brake; the brake further comprises a second line, and the second line is connected with the second shaft control unit, the fourth shaft control unit, the first brake and the third brake. The first line is arranged at intervals with the second line, and the brakes and the control units in all the axles are connected, so that the brakes and the control units cannot be omitted no matter any number of axles are used, and communication redundancy is realized in the technology of the first communication data line.
The vehicle redundant brake system further comprises a third communication data line, wherein the third communication data line is connected with all the control units, and the third communication data line is connected with all the control units such as the first axis control unit, the second axis control unit, the third axis control unit and the fourth axis control unit.
In the redundant braking system of the vehicle, the braking request device may generate a braking request signal for the control unit to receive, and the braking request device may be an automatic braking input device such as a brake pedal, a parking switch, an automatic driving system, and an automatic driving assistance system.
In the above redundant braking system for a vehicle, the control unit is an electronic control unit, and the control unit further includes an energy storage module, and the energy storage module can provide power to the control unit and the brake.
In the redundant braking system of the vehicle, the first communication data line, the second communication data line and the third communication data line are a CAN bus, a flexray bus, an ethernet and the like.
In the above vehicle redundant brake system, the brake includes a motor, a controller, a transmission mechanism, a caliper, a brake disc, and the like. The control unit controls the controller, the motor is provided with driving current by the controller and is transmitted to the calipers through the connection of the transmission mechanism, the speed reduction, the motion conversion mode and the like, and the calipers generate friction with the brake disc after being driven by the motor to finally realize braking.
Compared with the prior art, the brake system is provided with the second communication data lines which are alternately arranged, so that the redundancy which is not completely the same is ensured to be arranged on the basis of the first communication data lines, the brake system is particularly suitable for being used in vehicles with more than three shafts, and the distribution of the braking force on the whole vehicle is ensured to be more balanced; and a third communication data line is also arranged for detecting whether the difference between the first communication data line and the second communication data line is overlarge or not, so that the third redundancy is ensured, and the probability of faults is reduced.
Drawings
Fig. 1 is a schematic structural view of only two axles in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of embodiment 2 of the present invention having four axles.
In the figure, 1, an axle; 11. a first axle; 12. a second axle; 13. a third axle; 14. a fourth axle; 2. a brake; 21. a first brake; 22. a second brake; 23. a third brake; 24. a fourth brake; 3. a control unit; 31. a first shaft control unit; 32. a second shaft control unit; 33. a third axis control unit; 34. a fourth axis control unit; 4. a first communication data line; 5. a second communication data line; 51. a first line; 52. a second line; 6. a third communication data line.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Specific example 1 is shown in fig. 1: a vehicle redundant brake system comprises a brake request device, an axle 1, a brake 2 and a control unit 3, wherein the axle 1 comprises a first axle 11, the brake 2 comprises a first brake 21 on the first axle 11, the control unit 3 further comprises a first axle control unit 31 on the first brake 21, and a first communication data line 4 is arranged between the first axle control unit 31 and the first brake 21; the brake 2 comprises a second brake 22 on the second axle 12, the control unit 3 comprises a second axle control unit 32 on the second brake 22, and a first communication data line 4 is also arranged between the second axle control unit 32 and the second brake 22; the first communication data line 4 is used for connecting inside the axle 1, when the vehicle brake system is not in failure, the first axle control unit 31 and the second axle control unit 32 can respectively obtain the brake request signal, and can also obtain other signals such as the vehicle speed and the vehicle weight steering angle, etc., respectively calculate the braking force required by the brakes 2 on the wheels on both sides of the axle 1, and finally, the first communication data line 4 transmits the braking force signal of the first axle control unit 31 to the first brake 21, and transmits the braking force signal of the second axle control unit 32 to the second brake 22. A second communication data line 5 is further arranged between the first axle 11 and the second axle 12, the second communication data line 5 is sequentially connected with the control unit 3 and the brake 2 on the axle 1 adjacent to the axle 1 on which the control unit 3 is arranged, and the second communication data line 5 comprises a first line 51 for connecting the first axle control unit 31 and the second brake 22 and a second line 52 for connecting the second axle control unit 32 and the first brake 21. The second communication data line 5 is a redundant braking configuration of the first communication data line 4, each line is sequentially and alternately connected with the control unit 3 and the brake 2, on the basis of the first communication data line 4, faults between adjacent axles 1 are tested and improved, the distribution of braking force on the whole vehicle is more uniform, and the adjacent axles 1 are enabled to realize more stable and reliable braking.
The control device further comprises a third communication data line 6, wherein the third communication data line 6 is connected with all the control units 3, namely the first axis control unit 31 and the second axis control unit 32. The third communication data line 6 is connected with the control units 3 of all the axles 1, safety redundancy configuration is realized again on the basis of the first communication data line 4 and the second communication data line 5, the control units 3 of all the axles 1 are mutually verified, if the control unit 3 of one axle 1 has obvious abnormal conditions, for example, the difference between the calculated braking force and the calculated value of the control units 3 of the other axles 1 is large, the braking signals of the control units 3 of the other axles 1 can be selectively transmitted to the other axles for use, or the braking of the axle 1 is selectively stopped, and the other axles 1 complete braking. It can be identified and improved by the third communication data line 6 after a failure of a single axle 1 or a wheel brake 2 or the like on the axle 1.
The brake request device may generate a brake request signal for the control unit 3 to receive, and the brake request device may be an automatic brake input device such as a brake pedal, a parking switch, or an automatic driving system, an automatic driving assistance system, or the like. The control unit 3 is an electronic control unit 3, and the control unit 3 further comprises an energy storage module which can provide power for the control unit 3 and the brake 2. The first communication data line 4, the second communication data line 5 and the third communication data line 6 are a CAN bus, a flexray bus, an ethernet, etc. The brake 2 comprises a motor, a controller, a transmission mechanism, calipers, a brake disc and the like. The control unit 3 controls the controller, the motor is provided with driving current by the controller, the driving current is transmitted to the calipers through the transmission mechanism connection, the speed reduction, the motion conversion mode and the like, and the calipers are driven by the motor to generate friction with the brake disc to finally realize braking.
Specific example 2 is shown in fig. 2: a vehicle redundant braking system comprises a braking request device, an axle 1, a brake 2 and a control unit 3, wherein the axle 1 comprises a first axle 11, a second axle 12, a third axle 13 and a fourth axle 14, the first axle 11 is provided with a first brake 21 and a first axle control unit 31, and a first communication data line 4 is arranged between the first axle control unit 31 and the first brake 21; a second brake 22 and a second shaft control unit 32 are arranged on the second axle 12, and a first communication data wire 4 is arranged between the second shaft control unit 32 and the second brake 22; a third brake 23 and a third axis control unit 33 are arranged on the third axle 13, and a first communication data line 4 is arranged between the third axis control unit 33 and the third brake 23; a fourth brake 24 and a fourth shaft control unit 34 are arranged on the fourth axle 14, and a first communication data line 4 is arranged between the fourth shaft control unit 34 and the fourth brake 24.
The second communication data line 5 is sequentially and alternately connected with the control unit 3 on the odd axle 1 and the brake 2 on the even axle 1; the second communication data line 5 is sequentially and alternately connected with the control unit 3 on the odd axle 1 and the brake 2 on the even axle 1; the second communication data line 5 is also sequentially and alternately connected with the control unit 3 on the even axle 1 and the brake 2 on the odd axle 1. The second communication data line 5 comprises a first line 51, and the first line 51 is connected with the first axis control unit 31, the third axis control unit 33, the second brake 22 and the fourth brake 24; and a second line 52, wherein the second line 52 is connected with the second axle 12 control unit, the fourth axle control unit 34, the first brake 21 and the third brake 23. The first line 51 is arranged at intervals with the second line 52, and the brakes 2 and the control units 3 in all the axles 1 are connected, so that the brakes 2 and the control units 3 cannot be omitted in any number of axles 1, communication redundancy is realized on the technology of the first communication data line 4, faults between vehicles at intervals can be effectively improved, and the braking force between the axles 1 at intervals is more reliable.
The control device further comprises a third communication data line 6, wherein the third communication data line 6 is connected with all the control units 3, and the third communication data line 6 is connected with all the control units 3 such as the first axis control unit 31, the second axis control unit 32, the third axis control unit 33 and the fourth axis control unit 34. The third communication data line 6 is connected with the control units 3 of all the axles 1, safety redundancy configuration is realized again on the basis of the first communication data line 4 and the second communication data line 5, the control units 3 of all the axles 1 are mutually verified, if the control unit 3 of one axle 1 has obvious abnormal conditions, for example, the difference between the calculated braking force and the calculated value of the control units 3 of the other axles 1 is large, the braking signals of the control units 3 of the other axles 1 can be selectively transmitted to the other axles for use, or the braking of the axle 1 is selectively stopped, and the other axles 1 complete braking. It can be identified and improved by the third communication data line 6 after a failure of a single axle 1 or a wheel brake 2 or the like on the axle 1.
The brake request device may generate a brake request signal for the control unit 3 to receive, and the brake request device may be an automatic brake input device such as a brake pedal, a parking switch, or an automatic driving system, an automatic driving assistance system, or the like. The control unit 3 is an electronic control unit 3, and the control unit 3 further comprises an energy storage module which can provide power for the control unit 3 and the brake 2. The first communication data line 4, the second communication data line 5 and the third communication data line 6 are a CAN bus, a flexray bus, an ethernet, etc. The brake 2 comprises a motor, a controller, a transmission mechanism, calipers, a brake disc and the like. The control unit 3 controls the controller, the motor is provided with driving current by the controller, the driving current is transmitted to the calipers through the transmission mechanism connection, the speed reduction, the motion conversion mode and the like, and the calipers are driven by the motor to generate friction with the brake disc to finally realize braking.
The difference between the present embodiment 2 and embodiment 1 is that a third axle 13 and a fourth axle 14 are added, and the connection relationship between the first communication data line 4, the second communication data line 5 and the third communication data line 6 and the axle 1 is expanded.
The working process of the vehicle redundancy system is as follows: after the first shaft control unit 31, the second shaft control unit 32, the third shaft control unit 33 and the fourth shaft control unit 34 receive the braking request signal from the pedal, the control units 3 on the respective axles 1 calculate the braking force required by the respective axles 1, and transmit the braking force to the brakes 2 on the respective axles 1 through the first communication data line 4, so that the respective brakes 2 realize the braking on the respective axles 1; the third communication data line 6 is connected with the control units 3 among all the axles 1, and is used for verifying the braking request signals received by the respective control units 3 and the braking force signals transmitted to the brakes 2 to ensure that the errors are within a controllable range; the first line 51 and the second line 52 of the second communication data line 5 are alternately cross-connected with the control unit 3 and the brake 2 on the adjacent axle 1, respectively, so that safety redundancy which is not completely identical with the first communication data line 4 is realized.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A redundant braking system for a vehicle comprising a braking request device, an axle (1), brakes (2) and a control unit (3), characterized in that: the axle (1) comprises a first axle (11), the brake (2) comprises a first brake (21) on the first axle (11), the control unit (3) further comprises a first axle control unit (31) on the first brake (21), and a first communication data line (4) is arranged between the first axle control unit (31) and the first brake (21); the axle (1) further comprises a second axle (12), the brake (2) further comprises a second brake (22) on the second axle (12), the control unit (3) further comprises a second axle control unit (32) on the second brake (22), and a first communication data line (4) is also arranged between the second axle control unit (32) and the second brake (22); still be equipped with second communication data line (5) between adjacent axletree (1), second communication data line (5) connect gradually control unit (3) and with brake (2) on axletree (1) that control unit (3) place is adjacent.
2. A redundant braking system for a vehicle according to claim 1 wherein: the axle (1) further comprises a third axle (13), the brake (2) comprises a third brake (23) on the third axle (13), the control unit (3) further comprises a third axle control unit (33) on the third brake (23), and a first communication data line (4) is arranged between the third axle control unit (33) and the third brake (23); the axletree still include fourth axletree (14), the stopper include fourth brake (24) on fourth axletree (14), control unit (3) still include fourth axle control unit (34) on fourth brake (24), fourth axle control unit (34) and fourth brake (24) between also be equipped with first communication data line (4).
3. The vehicle redundant brake system according to claim 1 or 2, characterized in that: the car axle is characterized in that a third communication data line (6) is further arranged between the car axles (1), and the third communication data line (6) is connected with all the control units (3).
4. A redundant braking system for a vehicle according to claim 1 wherein: the second communication data line (5) is sequentially and alternately connected with the control unit (3) on the odd axle (1) and the brake (2) on the even axle (1); the second communication data line (5) is also sequentially and alternately connected with the control unit (3) on the even axle (1) and the brake (2) on the odd axle (1).
5. The vehicle redundant brake system according to claim 2, wherein: the second communication data line (5) is sequentially and alternately connected with the control unit (3) on the odd axle (1) and the brake (2) on the even axle (1); and the second communication data line (5) is also sequentially and alternately connected with the control unit (3) on the even axle (1) and the brake (2) on the odd axle (1).
6. The vehicle redundant braking system of claim 5, wherein: the second communication data line (5) comprises a first line (51), and the first line (51) is connected with the first shaft control unit (31), the third shaft control unit (33), the second brake (22) and the fourth brake (24); the brake further comprises a second line (52), and the second line (52) is connected with the second shaft control unit (32), the fourth shaft control unit (34), the first brake (21) and the third brake (23).
7. The vehicle redundant brake system according to claim 2, wherein: still contain third communication data line (6), third communication data line (6) connect above-mentioned all the control unit (3), third communication data line (6) connect first axle the control unit (31), second axle the control unit (32), third axle the control unit (33) and fourth axle the control unit (34) all the control unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222290505.9U CN218431224U (en) | 2022-08-30 | 2022-08-30 | Vehicle redundant braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222290505.9U CN218431224U (en) | 2022-08-30 | 2022-08-30 | Vehicle redundant braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218431224U true CN218431224U (en) | 2023-02-03 |
Family
ID=85097185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222290505.9U Active CN218431224U (en) | 2022-08-30 | 2022-08-30 | Vehicle redundant braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218431224U (en) |
-
2022
- 2022-08-30 CN CN202222290505.9U patent/CN218431224U/en active Active
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Effective date of registration: 20230905 Granted publication date: 20230203 |