CN115959103A - Trailer reversing auxiliary system and control method - Google Patents
Trailer reversing auxiliary system and control method Download PDFInfo
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- CN115959103A CN115959103A CN202111184549.7A CN202111184549A CN115959103A CN 115959103 A CN115959103 A CN 115959103A CN 202111184549 A CN202111184549 A CN 202111184549A CN 115959103 A CN115959103 A CN 115959103A
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Abstract
The utility model provides a trailer auxiliary system that backs a car, including the TEBS controller, the TEBS controller is used for receiving and handling driver's operating instruction and trailer in electronic module's data information, the TEBS controller is connected with a plurality of spring brake chamber, spring brake chamber is connected with the EBS relay valve, the TEBS controller is connected to the control end of EBS relay valve, the TEBS controller is connected with trailer extension module, a function interface for to the TEBS controller expands, trailer extension module is connected with intelligent supervisory equipment, alarm mechanism and ultrasonic ranging module. According to the invention, safe distance information is acquired through the trailer expansion module and the ultrasonic ranging module, the TEBS controller realizes the functions of controlling the backing speed and preventing collision and active braking by controlling the electromagnetic valve, and is provided with the intelligent monitoring equipment, and the alarm effect is achieved through the indicator lamp and the buzzer, so that the safety performance and the intelligent degree of the trailer are improved when the trailer loads and unloads goods.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a trailer reversing auxiliary system.
Background
The trailer is a vehicle which is towed by a vehicle and does not have a power driving device per se, and is a combination of a vehicle (a truck or a tractor or a forklift) and one or more trailers, wherein a truck and a towed vehicle are driving vehicle sections of a vehicle train, which are called main vehicles, and driven vehicle sections towed by the main vehicles are called trailers, which are important vehicle types for road transportation and are used for carrying personnel or goods, so that section transportation can be conveniently realized.
At present, most of the existing domestic trailers are not provided with a backing auxiliary system, when the trailers need to be backed, a specially-assigned person is required to command the operation of a driver, and the intelligent degree and the safety performance are low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a trailer reversing auxiliary system which can monitor the reversing safety distance by using an ultrasonic ranging module and realize reversing speed control and anti-collision active braking functions based on a TEBS controller.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a trailer backing auxiliary system comprises a TEBS controller, wherein the TEBS controller is used for receiving and processing an operation instruction of a driver and data information of an electronic module in a trailer, the TEBS controller is connected with a plurality of spring brake chambers, the spring brake chambers are connected with EBS relay valves, the control ends of the EBS relay valves are connected with the TEBS controller, the TEBS controller is connected with a trailer expansion module and used for expanding a functional interface of the TEBS controller, and the trailer expansion module is connected with intelligent monitoring equipment, an alarm mechanism and an ultrasonic ranging module;
the intelligent monitoring equipment is used for receiving and displaying monitoring information of a vehicle, the ultrasonic ranging module is used for monitoring the safety distance between a trailer and an obstacle and transmitting the safety distance to the TEBS controller through the trailer extension module, the TEBS controller processes input data information, and if the safety distance between the monitored trailer and the obstacle reaches the minimum threshold value arranged in the TEBS controller, the TEBS controller sends an instruction to the alarm mechanism through the trailer extension module, the alarm mechanism gives an alarm, the TEBS controller controls the spring brake air chamber to take a vehicle braking action to brake the vehicle.
Preferably, alarm mechanism includes a plurality of buzzer and a plurality of pilot lamp, a plurality of buzzer is located trailer's locomotive and rear of a vehicle department for sound warning, a plurality of the pilot lamp distributes around trailer's automobile body for light warning.
Preferably, the TEBS controller is connected to a tractor of the trailer vehicle via a cable of ISO7638 standard, and the tractor of the trailer vehicle sends a reverse gear signal and a wheel speed signal to the TEBS controller.
Preferably, the reverse gear signal and the wheel speed signal sent by the traction head of the trailer vehicle to the TEBS controller are CAN bus signals conforming to ISO11992 protocol.
Preferably, the TEBS controller is connected with the trailer expansion module through a plug connector, a power supply of the trailer expansion module is provided by the TEBS controller, and a communication protocol between the TEBS controller and the trailer expansion module is a CAN bus conforming to ISO11992 protocol.
Preferably, the trailer expansion module acquires the safety distance signal provided by the ultrasonic ranging module through a PWM or LIN communication mode.
Preferably, the intelligent monitoring equipment and the trailer extension module are in data communication through a CAN bus or a wireless Bluetooth mode.
Preferably, the spring brake chamber is a double-control spring brake chamber with a service brake chamber and a parking brake chamber.
Preferably, the TEBS controller includes a TEBS electromagnetic valve, the interface of the TEBS electromagnetic valve includes an electromagnetic valve 21 interface, an electromagnetic valve 31 interface, an electromagnetic valve 4 interface, an electromagnetic valve 1 interface, an electromagnetic valve 32 interface, and an electromagnetic valve 22 interface, the electromagnetic valve 21 interface and the electromagnetic valve 22 interface are electrically controlled pneumatic output ports, the electromagnetic valve 31 interface and the electromagnetic valve 32 interface are electrically controlled pneumatic exhaust ports, the electromagnetic valve 4 interface is a brake foot valve control port, and the electromagnetic valve 1 interface is an electrically controlled control loop interface.
A control method of a trailer reversing auxiliary system comprises the following steps:
s1, a trailer is engaged in a reverse gear, a TEBS controller receives a reverse gear signal and enters a reverse auxiliary mode, intelligent monitoring equipment and an alarm mechanism enter a working mode, the intelligent monitoring equipment acquires a driving signal of the trailer, and the alarm mechanism sends a reverse prompt;
s2, the ultrasonic ranging module transmits the monitored distance information between the tail of the trailer and the obstacle to a TEBS controller through a trailer expansion module, and the TEBS controller performs data processing by combining the distance information and a wheel speed signal of the trailer;
s3, detecting whether the trailer has an acceleration signal or not by the TEBS controller, if not, performing the fourth step, and if so, performing the fifth step;
s4, setting a wheel speed value, detecting a current wheel speed signal of the trailer by the TEBS controller, if the current wheel speed signal is larger than the set wheel speed value, sending an intermittent braking requirement to the TEBS controller by the trailer expansion module, keeping the vehicle speed at the set wheel speed value, if the current wheel speed signal is smaller than the set wheel speed value, judging whether the distance between the tail of the trailer and an obstacle of the trailer is within a safety threshold value preset by the TEBS controller, if the distance is within the safety threshold value, continuing to reverse the vehicle, and if the distance is not within the safety threshold value, controlling a spring brake air chamber to brake the trailer by the TEBS controller;
s5, setting an acceleration wheel speed value, detecting a current wheel speed signal of the trailer by the TEBS controller, and if the wheel speed signal is continuously greater than the set acceleration wheel speed value, exiting the backing auxiliary mode by the TEBS controller.
The invention has the advantages and positive effects that:
according to the intelligent anti-collision trailer, safe distance information is acquired through the trailer expansion module and the ultrasonic ranging module and is sent to the TEBS controller through the CAN bus, the TEBS controller realizes the functions of controlling the reversing speed and preventing collision and active braking through controlling the electromagnetic valve, and the intelligent monitoring device is arranged, and plays a role in alarming through the indicator lamp and the buzzer, so that the safety performance and the intelligent degree of the trailer are improved when the trailer loads and unloads goods.
Drawings
FIG. 1 is a schematic view of the reverse assistance system of the present invention;
FIG. 2 is a schematic circuit diagram of the reverse assist system of the present invention;
FIG. 3 is a schematic flow diagram of the operation of the reverse assist system of the present invention;
FIG. 4 is a schematic diagram of the TEBS controller of the present invention controlling the operation of the spring brake chambers.
In the figure: 1. an intelligent monitoring device; 2. a buzzer; 3. an indicator light; 4. a TEBS controller; 5. a spring brake chamber; 6. an EBS relay valve; 7. a trailer expansion module; 8. an ultrasonic ranging module; 9. a solenoid valve 21 interface; 10. the interface of the electromagnetic valve 31; 11. the electromagnetic valve 4 interface; 12. the electromagnetic valve 1 is connected with the port; 13. a solenoid valve 32 interface; 14. the solenoid valve 22 is interfaced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 and 2, the trailer reversing assist system comprises a TEBS controller 4, the TEBS controller 4 is used for receiving and processing an operation instruction of a driver and data information of an electronic module in a trailer, the TEBS controller 4 is connected with a traction head of the trailer through a cable of ISO7638 standard, the traction head of the trailer sends a reverse gear signal and a wheel speed signal to the TEBS controller 4, the reverse gear signal and the wheel speed signal sent by the traction head of the trailer to the TEBS controller 4 are CAN bus signals conforming to ISO11992 protocol, the TEBS controller 4 is connected with a plurality of spring brake air chambers 5, the spring brake air chambers 5 are dual-control spring brake air chambers with a driving brake chamber and a parking brake chamber, the spring brake air chambers 5 are connected with an EBS relay valve 6, a control end of the EBS relay valve 6 is connected with the TEBS controller 4, the TEBS controller 4 is connected with a trailer expansion module 7 for expanding a functional interface of the TEBS controller 4, and the expansion module 7 is connected with an intelligent monitoring device 1, an intelligent trailer alarm mechanism and an ultrasonic ranging module 8;
In this embodiment, alarm mechanism includes a plurality of buzzer 2 and a plurality of pilot lamp 3, and a plurality of buzzer 2 is located trailer's locomotive and rear of a vehicle department for sound warning, and 3 distributions of a plurality of pilot lamp are around trailer's automobile body, are used for light warning.
As shown in fig. 2, in this embodiment, the TEBS controller 4 and the trailer extension module 7 are connected through a plug connector, a power supply of the trailer extension module 7 is provided by the TEBS controller 4, a communication protocol between the TEBS controller 4 and the trailer extension module 7 is a CAN bus conforming to the ISO11992 protocol, the trailer extension module 7 acquires a safe distance signal provided by the ultrasonic ranging module 8 through a PWM or LIN communication method, and data communication is performed between the intelligent monitoring device 1 and the trailer extension module 7 through the CAN bus or a wireless bluetooth method.
As shown in fig. 4, the TEBS controller 4 includes a TEBS electromagnetic valve, the interfaces of the TEBS electromagnetic valve include an electromagnetic valve 21 interface 9, an electromagnetic valve 31 interface 10, an electromagnetic valve 4 interface 11, an electromagnetic valve 1 interface 12, an electromagnetic valve 32 interface 13, and an electromagnetic valve 22 interface 14, the electromagnetic valve 21 interface 9 and the electromagnetic valve 22 interface 14 are electrically controlled pneumatic output ports, the electromagnetic valve 31 interface 10 and the electromagnetic valve 32 interface 13 are electrically controlled pneumatic exhaust ports, the electromagnetic valve 4 interface 11 is a brake foot valve control port, and the electromagnetic valve 1 interface 12 is an electrically controlled control loop interface.
The working principle of the TEBS solenoid valve controlled spring brake chamber 5 is further described below:
when the valve core 61.2 of the electromagnetic valve is communicated with the valve core 61.5 of the electromagnetic valve, the TEBS controller 4 enters an electric control inflation mode, the air pressure of the interface 12 of the electromagnetic valve 1 can be directly output by the interface 9 of the electromagnetic valve 21 and the interface 14 of the electromagnetic valve 22 through the internal pipeline of the valve body, and the air pressure in the spring brake air chamber 5 rises to realize braking.
When the switching-on voltage of the solenoid valve core 61.1 and the solenoid valve core 61.6 reaches a preset value A, channels are switched, and at the moment, the pressure maintaining is respectively realized on the interface 9 of the solenoid valve 21 and the interface 12 of the solenoid valve 1.
When the switching-on voltage of the solenoid valve core 61.1 and the solenoid valve core 61.6 reaches a preset value B, the channel is switched, at the moment, the port 9 of the solenoid valve 21 exhausts air through the port 10 of the solenoid valve 31, the air pressure in the spring brake air chamber 5 is reduced, and the braking force is reduced.
When the switching-on voltage of the solenoid valve core 61.4 and the solenoid valve core 61.3 reaches a preset value A, the channels are switched, and at the moment, the interface 14 of the solenoid valve 22 and the interface 12 of the solenoid valve 1 respectively realize pressure maintaining.
When the switching-on voltage of the solenoid valve core 61.4 and the solenoid valve core 61.3 reaches a preset value B, the channel is switched, at the moment, the port 14 of the solenoid valve 22 exhausts air through the port 13 of the solenoid valve 32, the air pressure in the spring brake air chamber 5 is reduced, and the braking force is reduced.
As shown in fig. 3, a control method of a trailer backup assist system includes the following steps:
s1, the trailer is engaged in a reverse gear, a TEBS controller 4 receives a reverse gear signal and enters a reverse auxiliary mode, an intelligent monitoring device 1 and an alarm mechanism enter a working mode, a running signal of the trailer is collected by the intelligent monitoring device 1, and a reverse prompt is sent by the alarm mechanism;
s2, the ultrasonic ranging module 8 transmits the monitored distance information between the tail of the trailer and the obstacle to the TEBS controller 4 through the trailer expansion module 7, and the TEBS controller 4 carries out data processing by combining the distance information and a wheel speed signal of the trailer;
s3, detecting whether the trailer has an acceleration signal or not by the TEBS controller 4, namely whether a driver intends to continuously tread an accelerator pedal or not, if not, performing the fourth step, and if so, performing the fifth step;
s4, setting a wheel speed value, detecting a current wheel speed signal of the trailer by the TEBS controller 4, if the current wheel speed signal is larger than the set wheel speed value, sending an intermittent braking requirement to the TEBS controller 4 by the trailer expansion module 7, keeping the vehicle speed at the set wheel speed value, if the current wheel speed signal is smaller than the set wheel speed value, judging whether the distance between the tail of the trailer and an obstacle of the trailer is within a safety threshold value preset by the TEBS controller 4, if so, continuing to reverse the vehicle, and if not, controlling a spring brake air chamber 5 by the TEBS controller 4 to brake the trailer;
s5, setting an acceleration wheel speed value, detecting a current wheel speed signal of the trailer by the TEBS controller 4, and if the wheel speed signal is continuously larger than the set acceleration wheel speed value, exiting the backing auxiliary mode by the TEBS controller 4.
In specific implementation, the control method is adopted to control the trailer reversing auxiliary system, analyze the condition of the trailer in the reversing process, determine corresponding actions and maintain the safety of the trailer.
According to the invention, safe distance information is acquired through the trailer expansion module 7 and the ultrasonic ranging module 8 and is sent to the TEBS controller 4 through the CAN bus, the TEBS controller 4 realizes the functions of backing speed control and anti-collision active braking through controlling the electromagnetic valve, and the intelligent monitoring device 1 is arranged, and plays a role in alarming through the indicator lamp 3 and the buzzer 2, so that the safety performance and the intelligent degree of the trailer are improved when the trailer loads and unloads goods.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.
Claims (10)
1. A trailer backup assist system characterized in that: the intelligent monitoring system comprises a TEBS controller (4), wherein the TEBS controller (4) is used for receiving and processing an operation instruction of a driver and data information of an electronic module in a trailer, the TEBS controller (4) is connected with a plurality of spring brake air chambers (5), the spring brake air chambers (5) are connected with EBS relay valves (6), the control ends of the EBS relay valves (6) are connected with the TEBS controller (4), the TEBS controller (4) is connected with a trailer expansion module (7) and used for expanding a functional interface of the TEBS controller (4), and the trailer expansion module (7) is connected with an intelligent monitoring device (1), an alarm mechanism and an ultrasonic ranging module (8);
the intelligent monitoring device (1) is used for receiving and displaying monitoring information of a vehicle, the ultrasonic ranging module (8) is used for monitoring the safety distance between a trailer and an obstacle, the safety distance is transmitted to the TEBS controller (4) through the trailer extension module (7), the TEBS controller (4) processes input data information, if the safety distance between the monitored trailer and the obstacle reaches the minimum threshold value arranged in the TEBS controller (4), the TEBS controller (4) sends an instruction to the alarm mechanism through the trailer extension module (7), the alarm mechanism gives an alarm, and the TEBS controller (4) controls the spring brake air chamber (5) to take a vehicle braking action to brake the vehicle.
2. A trailer backup assist system as claimed in claim 1 wherein: alarm mechanism includes a plurality of buzzer (2) and a plurality of pilot lamp (3), a plurality of buzzer (2) are located trailer's locomotive and rear of a vehicle department for sound warning, a plurality of pilot lamp (3) distribute around trailer's automobile body for light warning.
3. A trailer backup assist system as claimed in claim 1 wherein: the TEBS controller (4) is connected with a traction head of a trailer vehicle through a cable of an ISO7638 standard, and the traction head of the trailer vehicle sends a reverse gear signal and a wheel speed signal to the TEBS controller (4).
4. A trailer backup assist system according to claim 3 wherein: the reverse gear signal and the wheel speed signal sent by the traction head of the trailer vehicle to the TEBS controller (4) are CAN bus signals conforming to ISO11992 protocol.
5. A trailer backup assist system according to claim 1 wherein: the TEBS controller (4) is connected with the trailer expansion module (7) through a plug connector, a power supply of the trailer expansion module (7) is provided by the TEBS controller (4), and a communication protocol between the TEBS controller (4) and the trailer expansion module (7) is a CAN bus conforming to an ISO11992 protocol.
6. A trailer backup assist system as claimed in claim 1 wherein: and the trailer expansion module (7) acquires the safety distance signal provided by the ultrasonic ranging module (8) in a PWM or LIN communication mode.
7. A trailer backup assist system according to claim 1 wherein: and the intelligent monitoring equipment (1) and the trailer expansion module (7) are in data communication in a CAN bus or wireless Bluetooth mode.
8. A trailer backup assist system as claimed in claim 1 wherein: the spring brake chamber (5) is a double-control spring brake chamber with a service brake chamber and a parking brake chamber.
9. A trailer backup assist system according to claim 1 wherein: the TEBS controller (4) comprises a TEBS electromagnetic valve, the interface of the TEBS electromagnetic valve comprises an electromagnetic valve 21 interface (9), an electromagnetic valve 31 interface (10), an electromagnetic valve 4 interface (11), an electromagnetic valve 1 interface (12), an electromagnetic valve 32 interface (13) and an electromagnetic valve 22 interface (14), the electromagnetic valve 21 interface (9) and the electromagnetic valve 22 interface (14) are electric control air pressure output ports, the electromagnetic valve 31 interface (10) and the electromagnetic valve 32 interface (13) are electric control air pressure exhaust ports, the electromagnetic valve 4 interface (11) is a brake foot valve control port, and the electromagnetic valve 1 interface (12) is an electric control loop interface.
10. A method of controlling a trailer backup assist system, comprising a trailer backup assist system according to any one of claims 1 to 9, the method comprising:
s1, a trailer is put into a reverse gear, a TEBS controller (4) receives a reverse gear signal and enters a reverse auxiliary mode, an intelligent monitoring device (1) and an alarm mechanism enter a working mode, a running signal of the trailer is collected by the intelligent monitoring device (1), and a reverse prompt is sent by the alarm mechanism;
s2, the ultrasonic ranging module (8) transmits the monitored distance information between the tail of the trailer and the obstacle to the TEBS controller (4) through the trailer expansion module (7), and the TEBS controller (4) combines the distance information and the wheel speed signal of the trailer vehicle to perform data processing;
s3, detecting whether the trailer has an acceleration signal by the TEBS controller (4), if not, performing the fourth step, and if so, performing the fifth step;
s4, setting a wheel speed value, detecting a current wheel speed signal of the trailer by the TEBS controller (4), if the current wheel speed signal is larger than the set wheel speed value, sending an intermittent braking requirement to the TEBS controller (4) by the trailer expansion module (7) to keep the vehicle speed at the set wheel speed value, if the current wheel speed signal is smaller than the set wheel speed value, judging whether the distance between the tail of the trailer and an obstacle of the trailer is within a preset safety threshold value of the TEBS controller (4), if so, continuing to back the vehicle, and if not, controlling a spring brake air chamber (5) by the TEBS controller (4) to brake the trailer;
s5, setting an acceleration wheel speed value, detecting a current wheel speed signal of the trailer by the TEBS controller (4), and if the wheel speed signal is continuously greater than the set acceleration wheel speed value, exiting the reverse auxiliary mode by the TEBS controller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184549.7A CN115959103A (en) | 2021-10-09 | 2021-10-09 | Trailer reversing auxiliary system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184549.7A CN115959103A (en) | 2021-10-09 | 2021-10-09 | Trailer reversing auxiliary system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115959103A true CN115959103A (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111184549.7A Pending CN115959103A (en) | 2021-10-09 | 2021-10-09 | Trailer reversing auxiliary system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115959103A (en) |
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2021
- 2021-10-09 CN CN202111184549.7A patent/CN115959103A/en active Pending
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