CN210793146U - Active intelligent braking system of trailer based on V2V - Google Patents
Active intelligent braking system of trailer based on V2V Download PDFInfo
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- CN210793146U CN210793146U CN201921228356.5U CN201921228356U CN210793146U CN 210793146 U CN210793146 U CN 210793146U CN 201921228356 U CN201921228356 U CN 201921228356U CN 210793146 U CN210793146 U CN 210793146U
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Abstract
The utility model discloses an active intelligent braking system of trailer based on V2V. The system comprises a tractor V2V communication unit (11) and a trailer V2V communication unit (12) for realizing wireless communication between the tractor and the trailer; a 15-core electrical connector (2) for electrical connection between a tractor and a trailer; a coupling member (3) serving as a mechanical connection between the tractor and the trailer; the trailer electronic control unit (4) is used for receiving signals of the communication unit (12) of the trailer V2V and the 15-core electric connector (2) and sending corresponding command signals to the electro-hydraulic system (5) for execution; the trailer motor hydraulic system (5) is an actuating mechanism for braking the trailer; the tractor storage battery (61) and the trailer storage battery (62) are respectively used for supplying power to the tractor V2V communication unit (11), the trailer V2V communication unit (12), the trailer electric control unit (4) and the trailer motor hydraulic system (5).
Description
Technical Field
The utility model belongs to the technical field of automobile brake device, especially a brake more reliable, simple installation and brake more intelligent sensitive active intelligent braking system of trailer based on V2V.
Background
In recent years, with the improvement of living standard, automobiles become more and more popular, and the development of economic society, especially the transportation and logistics industry, promotes the rapid development of the automobile market. From past driving practices, the traditional inertia trailer has higher requirements on the driving skill of a driver during driving, and accidents that the trailer collides with a tractor easily occur.
An active braking system of a trailer at present mainly obtains braking and backing signals of a tractor through a sensor, a mechanical mechanism and the like, for example, an active trailer braking system (application number: 201810430889.5, published as 2018-08-17) in Chinese invention patent, the active trailer braking system can brake the trailer according to the braking signals of the tractor and detection device signals of relative positions when the tractor brakes, compared with a full-mechanical structure of an inertia braking system, the active trailer braking system is more reliable, but the problems of bumping braking process and the like caused by unreliable braking, higher installation requirements and insensitivity exist.
In order to reduce the burden on the driver and reduce or avoid the occurrence of collision accidents, the industry has considered using V2V communication technology to ensure a safer driving environment under complex road conditions, thereby ensuring the safety of people's lives and properties.
For example, the invention of the chinese patent application No. 201610503238.5, published as 2016-11-09, discloses a vehicle distance control system and method based on V2V, wherein the V2V communication unit is used to receive various information from a preceding vehicle and send the information to the central processing unit, the detection unit detects the information of the vehicle and the information of the preceding vehicle and sends the information to the central processing unit, the central processing unit calculates according to the information sent by the V2V communication unit and the detection unit and sends the calculation result to the early warning unit and the vehicle control unit, and the early warning unit and the vehicle control unit judge whether to send early warning information to a vehicle driver and control the vehicle according to the calculation result. The vehicle anti-collision system and the control method based on the V2V are only limited to be used between independent vehicles, and no patent for applying the V2V technology to trailer braking exists at present.
In summary, the prior art has the following problems:
1. the displacement sensor arranged on the active trailer braking system has relatively high failure rate, and has high requirements on environment during detection, so that the braking is relatively unreliable;
2. the mounting requirements of the displacement sensor are high. During installation, special attention needs to be paid to installation centering performance, installation methods and the like, otherwise, short-circuit faults, reduction of service life and the like are easily caused;
3. the accuracy of the measurement of the active trailer brake system is limited, so that the brake has the problems of certain hysteresis and relatively low sensitivity. Therefore, even if the collision between the tractor and the trailer can be avoided, a certain bump can be generated in the braking process.
4. The vehicle anti-collision system and the control method based on the V2V are only limited to be used between independent vehicles, and the application of the V2V to trailer braking is not found at present.
Disclosure of Invention
An object of the utility model is to provide an active intelligent braking system of trailer based on V2V, the braking is more reliable, simple installation and the braking is intelligent sensitive more.
Realize the utility model discloses the technical solution of purpose does: an active intelligent braking system of a trailer based on V2V, comprising: a tractor V2V communication unit 11 and a trailer V2V communication unit 12 for wireless communication between the tractor and the trailer; a 15-core electrical connector 2 for electrical connection between the tractor and the trailer; a coupling member 3 serving as a mechanical connection between the tractor and the trailer; the trailer electronic control unit 4 is used for receiving signals of the 15-core electric connector 2 and the connecting component 3 and sending corresponding command signals to the trailer motor hydraulic system 5 for execution; the trailer motor hydraulic system 5 is an actuating mechanism for braking the trailer; a tractor battery 61 and a trailer battery 62 for powering the tractor V2V communication unit 11 and the trailer V2V communication unit 12, the trailer electrical control unit 4 and the trailer motor hydraulic system 5, respectively.
The tractor V2V communication unit 11 is used for sending information such as acceleration, speed and direction of the tractor to the trailer V2V communication unit 12;
the trailer V2V communication unit 12 is used for sending the driving information of the tractor to the trailer electric control unit 4;
and the trailer electric control unit 4 judges whether to perform braking control on the trailer according to the calculation result.
The power output end of the 15-core electric connector 2 is respectively connected with the power input ends of a trailer motor hydraulic system 5 and a trailer storage battery 62;
the signal input end of the trailer electric control unit 4 is connected with the signal output ends of the communication unit 12 of the trailer V2V and the 15-core electric connector 2, and the signal output end of the trailer electric control unit 4 is connected with the signal input end of the trailer motor hydraulic system 5;
the power supply input end of the tractor V2V communication unit 11 is connected with the power supply output end of the tractor storage battery 61;
the power output end of the 15-core electric connector 2 is respectively connected with the power input ends of the trailer motor hydraulic system 5 and the trailer storage battery 62, and the power output end of the trailer storage battery 62 is respectively connected with the power input ends of the trailer V2V communication unit 12, the trailer electric control unit 4 and the trailer motor hydraulic system 5.
Compared with the prior art, the utility model, it is showing the advantage and is:
1. braking is more reliable: the V2V technology realizes wireless communication between the tractor and the trailer, and the trailer receives the running information such as the acceleration, the speed and the direction of the tractor and monitors whether the trailer needs to brake in real time; the failure rate is lower than the "one active trailer brake system" described above. Obviously, the utility model discloses make trailer braking more real-time reliable, and its fault rate is lower relatively, and it is also more convenient to overhaul.
2. The installation is simple and convenient: only the V2V communication unit needs to be additionally arranged on the trailer, so that the installation requirement is relatively low and the installation is simpler and more convenient;
3. the intelligent braking is sensitive: because the V2V communication units are arranged on the tractor and the trailer, and the trailer can also realize the interaction of driving information with other vehicles on the road, the utility model can intelligently and smoothly brake to reduce jolt, and can avoid the collision between the trailer and other vehicles on the road during the driving process, especially during the braking process, so that the braking process is more intelligent; the utility model discloses a detection precision is higher, and the real-time of V2V technique can be alleviated former system and be detected the problem that has certain hysteresis for the braking is more sensitive. Obviously, the braking characteristic of the trailer braking system adopting the V2V communication unit is more intelligent and sensitive, and the safe driving of the tractor and the trailer on the road is ensured.
4. The use of V2V technology in trailer brake systems is innovatively proposed.
Drawings
Fig. 1 is the utility model discloses an active intelligent braking system of trailer's structural block diagram based on V2V, and the dotted line is the signal line, and the solid line is the power cord.
Fig. 2 is an operational schematic diagram of the coupling member of fig. 1.
Fig. 3 is a working schematic diagram of the trailer motor hydraulic system of fig. 1, with electrical signals in dashed lines and hydraulic lines in solid lines.
In the figure, a tractor V2V communication unit 11, a trailer V2V communication unit 12, a 15-core electric connector 2, a coupling member 3, a trailer electric control unit 4, a trailer motor hydraulic system 5 and a storage battery 6;
the trailer traction ring 31, the first connecting block 32, the second connecting block 33, the limiting spring 34 and the emergency braking device 35;
the brake system comprises a motor 51, a speed reducing mechanism 52, a motion converting mechanism 53, a brake master cylinder 54, a liquid storage tank 55, a hydraulic pressure sensor 56 and a wheel cylinder 57.
Detailed Description
As shown in fig. 1, the present invention relates to an active intelligent braking system for trailer based on V2V, which comprises a communication unit 11 of tractor V2V and a communication unit 12 of trailer V2V, for wireless communication between tractor and trailer; a 15-core electrical connector 2 for electrical connection between the tractor and the trailer; a coupling member 3 for mechanical connection between the tractor and the trailer; the trailer electronic control unit 4 is used for receiving signals of the 15-core electric connector 2 and the connecting component 3 and sending corresponding command signals to the trailer motor hydraulic system 5 for execution; the trailer motor hydraulic system 5 is an actuating mechanism for braking the trailer; and the storage battery 6 is used for supplying power to the V2V communication unit 1, the trailer electric control unit 4 and the trailer motor hydraulic system 5.
The tractor V2V communication unit 11 and the trailer V2V communication unit 12 realize communication through wireless communication; the power supply output end of the 15-core electric connector 2 is respectively connected with the power supply input ends of the motor hydraulic system 5 and the storage battery 6; the signal input end of the electric control unit 4 is connected with the signal output ends of the 15-core electric connector 2 and the connecting member 3, and the signal output end of the electric control unit 4 is connected with the signal input end of the motor hydraulic system 5; the power output end of the 15-core electric connector 2 is respectively connected with the power input ends of the 15-core electric connector 2 and the storage battery 6, and the power output end of the storage battery 6 is respectively connected with the power input ends of the V2V communication unit 1, the electric control unit 4 and the motor hydraulic system 5.
As shown in figure 2 of the drawings, in which,
the connecting component 3 comprises a trailer traction ring 31, a first connecting block 32, a second connecting block 33, a limiting spring 34 and an emergency braking device 35;
one end of the first connecting block 32 is fixedly connected with the trailer traction ring 31, and the other end of the first connecting block is nested in the connecting block 33 and can slide back and forth;
the limiting spring 34 is arranged between the end part of the first connecting block 32 nested in the second connecting block 33 and the limiting block on the inner side of the second connecting block 33;
the emergency braking device 36 is fixed at the top of the second connecting block 33, one end of a drawn steel wire pull wire is connected with the tractor, and the other end of the drawn steel wire pull wire is connected with a trailer parking braking cable;
according to the GB/T20717-2006 Electrical connector 24V15 core model between a road vehicle tractor and a trailer: the contact 7 of the 15-core electric connector 2 is a tractor brake signal output end, and the contact 8 is a tractor reversing signal output end, which are respectively connected with the signal input end of the trailer electric control unit 4.
And the signal output end of the 15-core electric connector 2 comprises a tractor braking signal output end and a tractor reversing signal output end.
As shown in figure 3 of the drawings,
the trailer motor hydraulic system 5 comprises a motor 51, a speed reducing mechanism 52, a motion conversion mechanism 53, a brake master cylinder 54, a liquid storage tank 55, a hydraulic sensor 56 and a wheel cylinder 57;
the motor 51, the speed reducing mechanism 52, the motion conversion mechanism 53 and the brake master cylinder 54 are sequentially connected in series, a liquid inlet of the brake master cylinder 54 is connected with the liquid storage tank 55 through a pipeline, a liquid outlet of the brake master cylinder 54 is connected with the wheel cylinder 57 through a pipeline, and the hydraulic sensor 56 is arranged in a pipeline of which the liquid outlet is connected with the wheel cylinder 7;
the control end of the motor 51 is connected with the signal output end of the trailer electric control unit 4;
the power input end of the motor 51 is respectively connected with the 15-core electric connector 2 and the power output end of the storage battery 6.
Since the trailer has no power source, according to the GB/T20717 + 2006 electric connector 24V15 core between the road vehicle tractor and the trailer: the contact 9 of the 15-core electric connector 2 is a 24V continuous power supply output end, the 24V continuous power supply output end is respectively connected with the power supply input ends of the storage battery 6 and the trailer motor hydraulic system 5, and the power supply output end of the storage battery 6 is respectively connected with the power supply input ends of the trailer electric control unit 4 and the trailer motor hydraulic system 5. When the trailer does not need to be braked in the running process, the 15-core electric connector 2 charges the storage battery 6; when the trailer needs to be braked, the 15-core electric connector 2 and the storage battery 6 simultaneously supply power to the trailer motor hydraulic system 5.
The utility model relates to an active intelligent braking system of trailer's theory of operation based on V2V is as follows:
and (3) applying the brake of the tractor, comprehensively considering the received brake signal of the tractor and the signals of the acceleration, the speed, the direction and the like of the tractor sent by the V2V communication unit 1 in real time, calculating the optimal braking force according to an internal algorithm of the trailer electric control unit 4, and after power transmission of the motor 51, the speed reducing mechanism 52 and the motion conversion mechanism 53, pressing the brake fluid in the brake master cylinder 54 into the brake wheel cylinder 57 to push a brake shoe or a brake caliper to brake.
The specific process is as follows: the tractor braking signal output end of the 15-core electric connector 2 outputs a braking signal to the trailer electric control unit 4, the tractor V2V communication unit 11 sends signals such as acceleration, speed and the like to the trailer V2V communication unit 12 in real time and outputs the signals to the trailer electric control unit 4, the trailer electric control unit 4 comprehensively considers the received tractor braking signal and the signals sent by the trailer V2V communication unit 12, obtains the optimal braking force after calculation by an internal preset algorithm and outputs a control signal to the motor 51, the rotary motion of the motor 51 is transmitted to the motion conversion mechanism 53 to be converted into linear motion after speed reduction and torque increase of the speed reduction mechanism 52, the piston of the brake master cylinder 54 is pushed to move, the brake fluid is pressed into the brake wheel cylinder 57, and the brake shoe or the brake caliper is pushed to brake, which is a pressurization process.
The tractor brake is released, the trailer electric control unit 4 receives a tractor brake release signal, calculates and judges whether the trailer needs to be braked or not through an internal algorithm according to signals such as acceleration and the like sent by the V2V communication units 11 and 12 in real time, and if the trailer needs to be braked, the rotor of the motor 51 keeps the current position, which is a pressure maintaining process; conversely, the trailer electronic control unit 4 drives the motor 51 to rotate reversely, and the piston of the brake master cylinder 54 is pulled back through the speed reducing mechanism 52 and the motion conversion mechanism 53, so that the pressure of the wheel cylinder 57 is relieved, and the trailer is braked.
The specific process is as follows: the tractor V2V communication unit 11 sends signals of acceleration, speed, direction and the like of the tractor to the trailer V2V communication unit 12 in real time, the trailer electric control unit 4 receives the brake releasing signal of the tractor and the signal of the trailer V2V communication unit 12 and then judges whether the trailer needs to be braked or not, if the trailer needs to be braked, the rotor of the motor 51 keeps the current position unchanged, and the pressure maintaining process is carried out; on the contrary, the trailer electric control unit 4 outputs a signal to the motor 51 to enable the motor 51 to rotate reversely, the reversely rotating motion of the motor 51 is transmitted to the motion conversion mechanism 53 to be converted into a reversely linear motion after the speed reduction and torque increase of the speed reduction mechanism 52, the piston of the brake master cylinder 54 is pulled to move reversely, and the brake fluid in the wheel cylinder 57 flows back to the liquid storage tank 55 through the brake master cylinder 54, which is a pressure relief process.
And when the tractor backs up, the trailer electric control unit 4 receives a tractor backing up signal and a speed and direction signal sent by the V2V communication unit 1 in real time, and does not brake the trailer until backing up is completed. The specific process is as follows: the tractor V2V communication unit 11 sends a tractor speed direction signal to the trailer V2V communication unit 12 in real time, the trailer V2V communication unit outputs a tractor speed direction signal, the 15-core electric connector 2 also outputs a tractor signal, and the trailer electric control unit 4 does not send a braking instruction to the trailer after receiving the two signals until backing up.
The utility model discloses adopt V2V technique on trailer braking system innovatively for can carry out wireless communication between tractor and the trailer, can realize the communication of other vehicles that travel on tractor, trailer and the road surface simultaneously, when the tractor brakes, can in time, intelligently take best brake force to carry out smooth-going braking in order to avoid colliding and reduce jolting to the trailer. Compared with an active braking system adopting a displacement sensor, the utility model has relatively lower failure rate and is more reliable; less requirements for installation; and the running information of the tractor and the trailer can be shared in real time, so that the hysteresis is reduced, the braking is more intelligent and sensitive, and the driving technical requirement on a driver is lower. The utility model discloses a V2V communication technology and electronic control compare than preceding active braking system, and the braking is more reliable, the installation is more simple and convenient and more intelligent sensitive.
Claims (7)
1. An active intelligent braking system of a trailer based on V2V, which is characterized by comprising:
a tractor V2V communication unit (11) and a trailer V2V communication unit (12) for wireless communication between the tractor and the trailer;
a 15-core electrical connector (2) for electrical connection between a tractor and a trailer;
a coupling member (3) for mechanical connection between a tractor and a trailer;
the trailer electronic control unit (4) is used for receiving signals of the communication unit (11) of the tractor V2V and the 15-core electric connector (2) and sending corresponding command signals to the trailer motor hydraulic system (5) for execution;
the trailer motor hydraulic system (5) is used for an actuating mechanism for braking the trailer;
the tractor storage battery (61) and the trailer storage battery (62) are respectively used for supplying power to the tractor V2V communication unit (11), the trailer V2V communication unit (12), the trailer electric control unit (4) and the trailer motor hydraulic system (5);
the tractor V2V communication unit (11) transmits the running information of the tractor to the trailer V2V communication unit (12) by wireless communication, the signal input end of the trailer electric control unit (4) is respectively connected with the signal output ends of the communication unit (12) of the trailer V2V and the 15-core electric connector (2), the signal output end of the trailer electric control unit (4) is connected with the signal input end of the trailer motor hydraulic system (5), the power output end of the 15-core electric connector (2) is connected with the power input ends of a trailer motor hydraulic system (5) and a trailer storage battery (62) respectively, the power output end of the tractor storage battery (61) is connected with the power input end of a tractor V2V communication unit (11), and the power output end of the trailer storage battery (62) is connected with the power input ends of a trailer V2V communication unit (12), a trailer electric control unit (4) and the trailer motor hydraulic system (5) respectively.
2. The smart braking system of claim 1, wherein:
the connecting component (3) comprises a trailer traction ring (31), a first connecting block (32), a second connecting block (33), a limiting spring (34) and an emergency braking device (35);
one end of the first connecting block (32) is fixedly connected with the trailer traction ring (31), and the other end of the first connecting block is nested in the second connecting block (33) in a left-right sliding manner;
the limiting spring (34) is arranged between the end part of the first connecting block (32) nested in the second connecting block (33) and the limiting block on the inner side of the second connecting block (33);
and the emergency braking device (35) is fixed at the top of the second connecting block (33), one end of a drawn steel wire pull wire is connected with the tractor, and the other end of the drawn steel wire pull wire is connected with a trailer parking braking cable.
3. The smart braking system of claim 1, wherein:
and the signal output end of the 15-core electric connector (2) comprises a tractor braking signal output end and a tractor reversing signal output end.
4. The smart braking system of claim 1, wherein:
the trailer motor hydraulic system (5) comprises a motor (51), a speed reducing mechanism (52), a motion conversion mechanism (53), a brake master cylinder (54), a liquid storage tank (55), a hydraulic sensor (56) and a wheel cylinder (57);
the motor (51), the speed reducing mechanism (52), the motion converting mechanism (53) and the master brake cylinder (54) are sequentially connected in series, a liquid inlet of the master brake cylinder (54) is connected with the liquid storage tank (55) through a fluid pipeline, a liquid outlet of the master brake cylinder is connected with the wheel cylinder (57) through a fluid pipeline, and the hydraulic sensor (56) is arranged on a pipeline connecting the liquid outlet of the master brake cylinder (54) with the wheel cylinder (57);
the control end of the motor (51) is connected with the signal output end of the trailer electric control unit (4);
and the power supply input end of the motor (51) is respectively connected with the power supply output end of the 15-core electric connector (2) and the trailer storage battery (62).
5. The smart braking system of claim 4, wherein:
when the tractor brakes, the trailer electric control unit (4) receives a tractor braking signal and tractor acceleration, speed and direction signals sent by the trailer V2V communication unit (12), calculates the optimal braking force, drives the motor (51) to rotate, pushes the piston of the brake master cylinder (54) through the speed reducing mechanism (52) and the motion conversion mechanism (53) so as to pressurize the wheel cylinder (57), and completes the braking process.
6. The smart braking system of claim 4, wherein:
when the tractor is braked, the trailer electric control unit (4) receives the acceleration, speed and direction signals of the tractor sent from the communication unit (12) of the trailer V2V, judges whether the trailer needs to be braked or not, and if the trailer needs to be braked, the rotor of the motor (51) keeps the current position, which is a pressure maintaining process; on the contrary, the trailer electric control unit (4) drives the motor (51) to rotate reversely, and the piston of the brake master cylinder (54) is pulled back through the speed reducing mechanism (52) and the motion conversion mechanism (53) so as to release the pressure of the wheel cylinder (57), and the trailer releases the brake.
7. The smart braking system of claim 4, wherein:
when the tractor backs a car, the trailer electric control unit (4) receives the tractor signal of backing a car, does not brake the trailer, until finishing backing a car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228356.5U CN210793146U (en) | 2019-08-01 | 2019-08-01 | Active intelligent braking system of trailer based on V2V |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228356.5U CN210793146U (en) | 2019-08-01 | 2019-08-01 | Active intelligent braking system of trailer based on V2V |
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| Publication Number | Publication Date |
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| CN210793146U true CN210793146U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921228356.5U Active CN210793146U (en) | 2019-08-01 | 2019-08-01 | Active intelligent braking system of trailer based on V2V |
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| CN (1) | CN210793146U (en) |
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- 2019-08-01 CN CN201921228356.5U patent/CN210793146U/en active Active
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