A trailer system control module

Abstract

A trailer system control module includes a TEBS controller for monitoring the operation of the trailer. When the situation of the vehicle's emergency braking and tire locking is detected, the TEBS controller controls the EBS relay valve to release the locking action. Before the TEBS controller detects the situation that the left and right axle loads change and the tires leave the ground, the TEBS controller controls the single-sided spring brake air chamber to perform single-sided braking, and at the same time controls the EBS relay valve to reduce the vehicle speed to make the vehicle drive stably. The present invention realizes the control of the corresponding action modules based on the TEBS controller, realizes different functions according to different usage conditions, coordinates each spring brake air chamber to realize the ABS anti-lock function, coordinates the trailer expansion module to realize the 5G autonomous communication function between the whole vehicle and the outside, and coordinates the reverse control module to realize the automatic reverse function. The intelligent and safe control of the trailer is realized through the linkage reaction between the TEBS controller and other function modules.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle control, in particular to a trailer system control module. Background Art

[0002] A trailer is a vehicle towed by a car but without its own power drive device. It is a combination of a car (truck or tractor, forklift) and one or more trailers. The truck and tractor are the driving sections of the car train, called the main car, and the driven section towed by the main car is called the trailer. It is an important type of vehicle for road transportation, used to carry people or goods, and can easily realize section transportation.

[0003] The existing trailer control system is only based on the start-stop control function and cannot form a linkage system with other modules of the trailer. It has few achievable intelligent functions and low safety performance. Summary of the invention

[0004] The object of the present invention is to overcome the deficiencies of the prior art and to provide a trailer linkage system control module based on a TEBS controller that responds to corresponding module actions according to different working conditions.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] A trailer system control module, comprising a front axle control part, a middle axle control part and a rear axle control part respectively located at a front axle, a middle axle and a rear axle of the trailer;

[0007] The front axle control part includes a right front spring brake air chamber, a front right air bag, a left front spring brake air chamber and a front left air bag, the front right air bag and the front left air bag are connected to a front middle ECAS solenoid valve, and the front middle ECAS solenoid valve is connected to a suspension air reservoir;

[0008] The middle bridge control part includes a right middle spring brake air chamber, a middle right airbag, a left middle spring brake air chamber and a middle left airbag, the middle right airbag and the middle left airbag are connected to the front middle ECAS solenoid valve, the right middle spring brake air chamber, the left middle spring brake air chamber and the right front spring brake air chamber, the left front spring brake air chamber are connected to a TEBS controller, and the TEBS controller is connected to a brake air reservoir through a pressure limiting valve;

[0009] The rear axle control part includes a right rear spring brake air chamber, a rear right airbag, a left rear spring brake air chamber and a rear left airbag, the rear right airbag and the rear left airbag are connected to a rear axle ECAS solenoid valve, the rear axle ECAS solenoid valve is connected to the suspension air reservoir, the right rear spring brake air chamber and the left rear spring brake air chamber are connected to an EBS relay valve, the EBS relay valve is connected to the TEBS controller, and the rear axle ECAS solenoid valve and the front middle ECAS solenoid valve are electrically connected to the TEBS controller;

[0010] The TEBS controller is used to monitor the operation of the trailer. When it is detected that the vehicle's emergency braking tire is locked, the TEBS controller controls the EBS relay valve to release the locking action to maximize the use of braking force to shorten the braking distance. Before the TEBS controller detects that the left and right axle loads change and the tires are off the ground, the TEBS controller controls the right front spring brake chamber, the right middle spring brake chamber, the right rear spring brake chamber or the left front spring brake chamber, the left middle spring brake chamber, and the left rear spring brake chamber to perform unilateral braking, and at the same time controls the EBS relay valve to reduce the vehicle speed, and controls the front middle ECAS solenoid valve and the rear axle ECAS solenoid valve to reduce the unilateral suspension height, transfer the axle load to ensure stable vehicle driving.

[0011] Preferably, the TEBS controller is connected to a trailer extension module, the trailer extension module is connected to a 5G communication module, and the 5G communication module is used to interact with external devices to realize a 5G autonomous communication function.

[0012] Preferably, the trailer extension module is also connected to a reversing control module, and the reversing control module is used to monitor the distance between the trailer and the obstacle, and feed back to the TEBS controller through the trailer extension module. The TEBS controller monitors the vehicle entering the reverse gear through the trailer extension module, and makes a judgment based on the feedback information of the reversing control module to realize automatic braking when the distance to the obstacle reaches the minimum safety threshold, thereby protecting the vehicle safety and realizing the automatic reversing function. Since the widths of trailers of different models are different, the number of reversing control modules is not limited and can be increased according to the actual length, as long as the distance between the obstacle and the vehicle can be monitored.

[0013] Preferably, the TEBS controller uses CAN bus signals to achieve information communication with the trailer expansion module.

[0014] Preferably, the trailer expansion module realizes information communication with the 5G communication module by converting CAN bus signals into 5G signals.

[0015] Preferably, the TEBS controller is powered via an ISO7638 connector.

[0016] The advantages and positive effects of the present invention are:

[0017] The present invention realizes control of corresponding action modules based on the TEBS controller, realizes different functions according to different operating conditions, coordinates various spring brake air chambers to realize the ABS anti-lock function, coordinates the ECAS solenoid valve and the EBS relay valve to realize the automatic adjustment of the suspension height function, coordinates the trailer extension module to realize the 5G autonomous communication function between the whole vehicle and the outside, and coordinates the reversing control module to realize the automatic reversing function. Through the linkage reaction of the TEBS controller and other functional modules, intelligent and safe control of the trailer is realized to ensure its safety and stability during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a connection diagram of a control module of the present invention;

[0019] Figure 2 It is a circuit control schematic diagram of the control module of the present invention.

[0020] In the figure:

[0021] 1. Right front spring brake chamber; 2. Front right airbag; 3. 5G communication module; 4. Front center ECAS solenoid valve; 5. Suspension air cylinder; 6. TEBS controller; 7. Right center spring brake chamber; 8. Center right airbag; 9. EBS relay valve; 10. Right rear spring brake chamber; 11. Trailer extension module; 12. Rear right airbag; 13. Reversing control module; 14. Rear axle ECAS solenoid valve; 15. Rear left airbag; 16. Left rear spring brake chamber; 17. Pressure limiting valve; 18. Center left airbag; 19. Left center spring brake chamber; 20. Brake air cylinder; 21. Front left airbag; 22. Left front spring brake chamber. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0026] like Figure 1 As shown, a trailer system control module of the present invention includes a front axle control part, a middle axle control part and a rear axle control part respectively located at the front axle, the middle axle and the rear axle of the trailer. The following describes in detail the partial composition and circuit connection of the front axle control part, the middle axle control part and the rear axle control part:

[0027] The front axle control part includes a right front spring brake chamber 1, a front right airbag 2, a left front spring brake chamber 22 and a front left airbag 21. The front right airbag 2 and the front left airbag 21 are connected to a front middle ECAS solenoid valve 4. The front middle ECAS solenoid valve 4 is connected to a suspension air reservoir 5.

[0028] The middle bridge control part includes a right middle spring brake air chamber 7, a middle right airbag 8, a left middle spring brake air chamber 19 and a middle left airbag 18, the middle right airbag 8 and the middle left airbag 18 are connected to the front middle ECAS solenoid valve 4, the right middle spring brake air chamber 7, the left middle spring brake air chamber 19 and the right front spring brake air chamber 1, the left front spring brake air chamber 22 are connected to the TEBS controller 6, and the TEBS controller 6 is connected to the brake air reservoir 20 through the pressure limiting valve 17;

[0029] The rear axle control part includes a right rear spring brake chamber 10, a rear right airbag 12, a left rear spring brake chamber 16 and a rear left airbag 15, the rear right airbag 12 and the rear left airbag 15 are connected to a rear axle ECAS solenoid valve 14, the rear axle ECAS solenoid valve 14 is connected to a suspension air reservoir 5, the right rear spring brake chamber 10 and the left rear spring brake chamber 16 are connected to an EBS relay valve 9, the EBS relay valve 9 is connected to a TEBS controller 6, and the rear axle ECAS solenoid valve 14 and the front middle ECAS solenoid valve 4 are electrically connected to the TEBS controller 6;

[0030] In addition, the TEBS controller 6 is connected to a trailer extension module 11, and the trailer extension module 11 is connected to a 5G communication module 3 and a reversing control module 13. The 5G communication module 3 is used to exchange information with external devices, and the reversing control module 13 is used to monitor the distance between the trailer and the obstacle, and feed it back to the TEBS controller 6 through the trailer extension module 11. Since the widths of trailers of different models are different, the number of reversing control modules 13 is not limited and can be added according to the actual length, as long as the distance between the obstacle and the vehicle can be monitored.

[0031] In this embodiment, the TEBS controller 6 is powered by an ISO7638 connector, the TEBS controller 6 uses a CAN bus signal to communicate with the trailer extension module 11, and the trailer extension module 11 uses a CAN bus signal ISO11992 to 5G signal conversion method to communicate with the 5G communication module 3.

[0032] like Figure 2 As shown, it is a schematic diagram of the circuit connection principle between the TEBS controller 6 and each module, the interface 61 of the TEBS controller 6 is the circuit interface between the front center ECAS solenoid valve 4 and the TEBS controller 6, the interface 62 is the circuit interface between the trailer extension module 11 and the TEBS controller 6, the interface 63 is the circuit interface between the rear axle ECAS solenoid valve 4 and the TEBS controller 6, the interface 64 is the circuit interface between the EBS relay valve 9 and the TEBS controller 6, the interface 65 is the communication interface between the rear axle ECAS solenoid valve 4 and the TEBS controller 6, the interface 66 is the communication interface between the 5G communication module 3 and the trailer extension module 11, the interface 67 is the communication interface between the reversing control module 13 and the trailer extension module 11, and the interface 68 is the power supply interface between ISO7638 and the TEBS controller 6.

[0033] The system control module can realize different functions according to different driving conditions based on the TEBS controller 6, as follows:

[0034] ABS anti-lock braking function:

[0035] When the TEBS controller 6 detects that the vehicle's emergency braking tires are locked, the TEBS controller 6 controls the EBS relay valve 9 to release the locking action, so as to maximize the use of the braking force to shorten the braking distance.

[0036] RSS Features:

[0037] Before the TEBS controller 6 detects that the left and right axle loads have changed and the tires are off the ground, the TEBS controller 6 controls the single-sided spring brake chamber, i.e., the right front spring brake chamber 1, the right middle spring brake chamber 7, the right rear spring brake chamber 10 or the left front spring brake chamber 22, the left middle spring brake chamber 19, the left rear spring brake chamber 16 to perform single-sided braking, and at the same time controls the EBS relay valve 9 to reduce the vehicle speed, and controls the front middle ECAS solenoid valve 4 and the rear axle ECAS solenoid valve 14 to reduce the single-sided suspension height, thereby transferring the axle load and enabling the vehicle to achieve stable driving.

[0038] 5G autonomous communication functions:

[0039] The TEBS controller 6 monitors the operation of the vehicle throughout the entire process, realizes information communication with the trailer extension module 11 through the communication interface 65, and the trailer extension module 11 communicates with the 5G communication module 3 through the communication interface 66, and realizes information interaction with external devices through the 5G communication module 3.

[0040] Automatic reverse function:

[0041] The reversing control module 13 monitors the distance between the vehicle and the rear obstacle in real time when reversing, and transmits the real-time monitored distance to the TEBS controller 6. The TEBS controller 6 monitors the vehicle entering the reverse gear through the trailer extension module 11, and makes a judgment based on the feedback information of the reversing control module 13 to realize automatic braking when the distance to the obstacle reaches the minimum safety threshold to protect the safety of the vehicle.

[0042] The above-mentioned TEBS controller 6 is evolved from Knorr-Bremse based on the ABS anti-lock braking system. It not only includes ABS functions, but also adds additional auxiliary functions based on the trend of smart trailers, including trailer rollover prevention system (TRSP), electronic brake force distribution system, air suspension intelligent control system, and trailer environment monitoring system (including tire temperature and pressure TPMS system, friction plate monitoring, reversing radar, etc.), which helps vehicles greatly improve driving safety and stability.

[0043] During specific implementation, the TEBS controller 6 controls other brake modules when different situations occur, realizing functions such as ABS, RSS, 5G communication and automatic reversing, greatly improving the safety performance of the trailer during driving, and realizing automatic control of the trailer through intelligent control means.

[0044] The present invention realizes control of corresponding action modules based on the TEBS controller 6, realizes different functions according to different operating conditions, coordinates various spring brake air chambers to realize the ABS anti-lock function, coordinates the ECAS solenoid valve and the EBS relay valve 9 to realize the automatic adjustment of the suspension height function, and coordinates the trailer extension module 11 to realize the 5G autonomous communication function between the whole vehicle and the outside, and coordinates the reversing control module 13 to realize the automatic reversing function. Through the linkage reaction between the TEBS controller 6 and other functional modules, intelligent and safe control of the trailer is realized to ensure its safety and stability during driving.

[0045] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A trailer system control module, Features: It includes a front axle control part, a middle axle control part and a rear axle control part respectively located at the front axle, the middle axle and the rear axle of the trailer; The front axle control part comprises a right front spring brake air chamber (1), a front right air bag (2), a left front spring brake air chamber (22) and a front left air bag (21), the front right air bag (2) and the front left air bag (21) are connected to a front middle ECAS solenoid valve (4), and the front middle ECAS solenoid valve (4) is connected to a suspension air reservoir (5); The middle bridge control part comprises a right middle spring brake air chamber (7), a middle right airbag (8), a left middle spring brake air chamber (19) and a middle left airbag (18); the middle right airbag (8) and the middle left airbag (18) are connected to the front middle ECAS solenoid valve (4); the right middle spring brake air chamber (7), the left middle spring brake air chamber (19) and the right front spring brake air chamber (1) and the left front spring brake air chamber (22) are connected to a TEBS controller (6); and the TEBS controller (6) is connected to a brake air reservoir (20) via a pressure limiting valve (17); The rear axle control part comprises a right rear spring brake chamber (10), a rear right airbag (12), a left rear spring brake chamber (16) and a rear left airbag (15); the rear right airbag (12) and the rear left airbag (15) are connected to a rear axle ECAS solenoid valve (14); the rear axle ECAS solenoid valve (14) is connected to the suspension air reservoir (5); the right rear spring brake chamber (10) and the left rear spring brake chamber (16) are connected to an EBS relay valve (9); the EBS relay valve (9) is connected to the TEBS controller (6); the rear axle ECAS solenoid valve (14) and the front center ECAS solenoid valve (4) are electrically connected to the TEBS controller (6); The TEBS controller (6) is used to monitor the running condition of the trailer. When the vehicle emergency braking tire is detected to be locked, the TEBS controller (6) controls the EBS relay valve (9) to release the locking action. Before the TEBS controller (6) detects that the left and right axle loads change and the tires are off the ground, the TEBS controller (6) controls the right front spring brake chamber (1), the right middle spring brake chamber (7), the right rear spring brake chamber (10) or the left front spring brake chamber (22), the left middle spring brake chamber (19), and the left rear spring brake chamber (16) to perform unilateral braking, and at the same time controls the EBS relay valve (9) to reduce the vehicle speed, and controls the front middle ECAS solenoid valve (4) and the rear axle ECAS solenoid valve (14) to reduce the unilateral suspension height, so as to transfer the axle load and enable the vehicle to travel stably. The TEBS controller (6) is connected to a trailer extension module (11). The TEBS controller (6) uses CAN bus signals to achieve information communication with the trailer extension module (11).

2. A trailer system control module according to claim 1, Features: The trailer extension module (11) is also connected to a reversing control module (13), and the reversing control module (13) is used to monitor the distance between the trailer and an obstacle, and to feed back the distance to the TEBS controller (6) through the trailer extension module (11).

3. A trailer system control module according to claim 1, Features: The trailer extension module (11) realizes information communication with the 5G communication module (3) by converting CAN bus signals into 5G signals.

4. A trailer system control module according to claim 1, Features: The TEBS controller (6) is powered via the ISO7638 connector.

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