CN111086493A - Air circuit braking system with automatic braking function - Google Patents
Air circuit braking system with automatic braking function Download PDFInfo
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- CN111086493A CN111086493A CN202010127760.4A CN202010127760A CN111086493A CN 111086493 A CN111086493 A CN 111086493A CN 202010127760 A CN202010127760 A CN 202010127760A CN 111086493 A CN111086493 A CN 111086493A
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- 230000008929 regeneration Effects 0.000 claims description 10
- 238000011069 regeneration method Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000035484 reaction time Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
- B60T17/004—Draining and drying devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Hydraulic Control Valves For Brake Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses an air path braking system with an automatic braking function, which comprises a vehicle sensing unit, a control unit, a conventional braking unit and an automatic electric control electric braking execution unit, wherein the vehicle sensing unit is connected with the control unit; through this automatic braking system, can effectively promote the security performance of whole car driving in-process, especially to long-distance transport vehicle, long-time working vehicle, the working vehicle etc. of going night, when driver's working strength is too big, the fatigue degree aggravation, when driver's judgement, reaction time slow down, this automatic braking system can in time assist whole car braking under corresponding emergency, avoids unusual dangerous situation to take place.
Description
Technical Field
The invention belongs to the field of air braking of intelligent driving automobiles and driving auxiliary function automobiles, and particularly relates to an air path braking system with an automatic braking function.
Background
With the rapid development of automobile industry in China, the automobile output and sales volume is rapidly increased. Meanwhile, rapid traffic infrastructure is also advanced at a high speed, which leads to negative hazards such as more vehicles, high speed, frequent accidents and the like. Especially, the traffic accident caused by the longitudinal collision of the automobile is very serious, and an automatic emergency braking system of the automobile is very necessary.
Conventional vehicles include an automatic vehicle brake system that automatically performs braking as needed independently of braking operation by a driver to ensure safety and driving stability during driving. Especially for long-distance transport vehicles, long-time working vehicles, night driving working vehicles and the like, when the working intensity of a driver is too high, the fatigue degree is aggravated, and the judgment and reaction time of the driver becomes slow, a braking system is urgently needed to be designed to assist the whole vehicle to brake in time under corresponding emergency conditions, so that abnormal dangerous conditions are avoided.
Disclosure of Invention
The technical scheme adopted for solving the problems in the prior art is as follows:
the air circuit braking system is suitable for the field of air braking of intelligent driving automobiles and driving auxiliary function automobiles, and comprises an air circuit braking system vehicle sensing unit with an automatic braking function, a control unit, a conventional braking unit and an automatic electric control electric braking execution unit. When the sensing unit senses an obstacle in front of the vehicle in the driving direction during the driving of the whole vehicle, the sensing unit feeds back a corresponding signal control unit to the electric control electric brake execution unit, the electric control electric brake execution unit sends a whole vehicle brake signal according to the received signal, and the whole vehicle brake operation is executed through the automatic brake valve.
The invention provides an air path braking system with an automatic braking function, which comprises a vehicle sensing unit, a control unit, a conventional braking unit and an automatic electric control electric braking execution unit, wherein the vehicle sensing unit is connected with the control unit;
the conventional brake unit comprises an air pump, a dryer and a four-loop protection valve;
the air pump is used for providing a pressure air source for the whole vehicle air path;
the dryer is used for drying air;
the four-loop protection valve is used for installing a gas circuit pressure sequential opening function;
the dryer is provided with a twenty-first dryer interface, a twenty-second dryer interface and a first dryer interface;
a valve body of the four-loop protection valve is provided with a first four-loop protection valve interface, a twenty-second four-loop protection valve interface, a twenty-third four-loop protection valve interface and a twenty-fourth four-loop protection valve interface;
the air pump is connected with a first interface on the dryer, a twenty-first interface of the dryer is connected with a first interface on the four-loop protection valve, a twenty-second interface on the dryer is connected with a regeneration cylinder, and a water drain valve is arranged on the regeneration cylinder.
Further, the vehicle sensing unit employs a range detection radar, a millimeter wave radar, and/or a laser radar.
Further, the vehicle sensing unit adopts a camera for image recognition.
Further, the vehicle sensing unit employs a radar and a camera.
Further, the air pump adopts an air compressor.
Furthermore, the automatic electric control electric brake execution unit comprises a front axle air storage cylinder, a parking air storage cylinder, an auxiliary air storage cylinder, a rear axle air storage cylinder, a front axle brake air chamber I, a front axle brake air chamber II, a rear axle brake air chamber I, a rear axle brake air chamber II, a relay valve I, a relay valve II, a quick release valve, an ABS valve I, an ABS valve II, an ABS valve III, a foot brake valve, a hand brake valve, a double-pointer air pressure gauge, a brake lamp switch, a low-pressure alarm switch, a safety valve, a test connector and an automatic brake valve;
the front axle air cylinder is provided with a front axle air cylinder air inlet interface and a front axle air cylinder air outlet interface;
the parking air cylinder is provided with an auxiliary air cylinder, the parking air cylinder and the auxiliary air cylinder are integrated, and the auxiliary air cylinder is provided with an auxiliary air cylinder first interface, an auxiliary air cylinder second interface and an auxiliary air cylinder third interface;
the parking air cylinder is provided with a first parking air cylinder interface, a second parking air cylinder interface and a third parking air cylinder interface;
the rear axle air cylinder is provided with a first rear axle air cylinder interface, a second rear axle air cylinder interface and a third rear axle air cylinder interface;
the front axle brake air chamber I is provided with a first interface of the front axle brake air chamber;
the front axle brake air chamber II is provided with a first interface of the front axle brake air chamber II;
the first rear axle brake chamber is provided with an eleventh interface of the rear axle brake chamber and a twelfth interface of the rear axle brake chamber;
the rear axle brake air chamber II is provided with a second eleventh interface of the rear axle brake air chamber and a second twelfth interface of the rear axle brake air chamber;
the first relay valve is provided with a first interface of the relay valve, a second interface of the relay valve, a fourth interface of the relay valve, a forty-first interface of the relay valve and a forty-second interface of the relay valve;
the second relay valve is provided with a second first interface of the relay valve, a second interface of the relay valve, a second fourth interface of the relay valve and a second forty-first interface of the relay valve;
the quick release valve is provided with a first quick release valve port, a second quick release valve port and a fourth quick release valve port;
the first ABS valve is provided with a first interface of the ABS valve and a second interface of the ABS valve;
the second ABS valve is provided with a second first interface of the ABS valve and a second interface of the ABS valve;
the third ABS valve is provided with a third first interface of the ABS valve and a third second interface of the ABS valve;
the fourth ABS valve is provided with a fourth first interface of the ABS valve and a fourth second interface of the ABS valve;
the foot brake valve is provided with an eleventh connector of the foot brake valve, a twelfth connector of the foot brake valve, a twenty-first connector of the foot brake valve and a twenty-second connector of the foot brake valve;
the hand brake valve is provided with a first hand brake valve interface and a second hand brake valve interface;
the automatic brake valve is provided with a first automatic brake valve interface, a second automatic brake valve interface, an eleventh automatic brake valve interface, a twelfth automatic brake valve interface, a twenty-first automatic brake valve interface and a twenty-second automatic brake valve interface;
the air pump is connected with a first dryer interface, the regeneration cylinder is connected with a twenty-second dryer interface, the twenty-first dryer interface is connected with a first four-loop protection valve interface, the twenty-three four-loop protection valve interface is connected with a first auxiliary air cylinder interface, the twenty-first four-loop protection valve interface is connected with a front axle air cylinder air inlet interface, the twenty-second four-loop protection valve interface is connected with a first rear axle air cylinder interface, and the twenty-third four-loop protection valve interface is connected with a first parking air cylinder interface;
the second interface of the parking air cylinder is connected with the first interface of the hand brake valve, and the third interface of the parking air cylinder is connected with the first interface of the relay valve;
the second interface of the auxiliary air cylinder is connected with A, B, and a test connector is arranged on a connecting pipeline of the second interface of the auxiliary air cylinder and A, B; the third interface of the auxiliary air storage cylinder is connected with C, D;
the second interface of the rear axle air cylinder is connected with the second first interface of the relay valve, and the third interface of the rear axle air cylinder is connected with the eleventh interface of the foot brake valve;
a first interface of the front axle brake air chamber is connected with a fourth second interface of the ABS valve;
an eleventh interface of the rear axle brake air chamber is connected with a second interface of the ABS valve, and a twelfth interface of the rear axle brake air chamber is connected with a second interface of the relay valve;
the first forty-first interface of the relay valve is connected with the second interface of the hand brake valve, the first forty-second interface of the relay valve is connected with the second forty-first interface of the relay valve, the twenty-first interface of the foot brake valve is connected with the first forty-second interface of the relay valve and the second forty-first interface of the relay valve, a brake lamp switch is arranged on a connecting pipeline between the twenty-first interface of the foot brake valve and the first forty-second interface of the relay valve in a connecting way, and the first fourth interface of the relay valve is connected with the second twelfth interface of the rear axle brake air chamber;
the second fourth interface of the relay valve is connected with the second first interface of the ABS valve, and the second interface of the relay valve is connected with the first interface of the ABS valve;
the first interface of the quick release valve is connected with the twenty-second interface of the foot brake valve, a brake lamp switch is connected to a connecting pipeline between the first interface of the quick release valve and the twenty-second interface of the foot brake valve, the second interface of the quick release valve is connected with the fourth first interface of the ABS valve, and the fourth interface of the quick release valve is connected with the first second interface of the front axle brake air chamber;
the twelfth interface of the foot brake valve is connected with the air outlet interface of the front axle air storage cylinder, and the foot brake valve is provided with a double-pointer air pressure meter;
the first interface of the automatic brake valve and the second interface of the automatic brake valve are both connected with the control unit, the eleventh interface of the automatic brake valve is connected with the third interface of the rear axle air cylinder and the eleventh interface of the foot brake valve, the twelfth interface of the automatic brake valve is connected with the twelfth interface of the foot brake valve and the air outlet interface of the front axle air cylinder, and the twenty-first interface of the automatic brake valve is connected with the twenty-first interface of the foot brake valve, the forty-second interface of the relay valve and the forty-first interface of the relay valve; and the twenty-second interface of the automatic brake valve is connected with the first interface of the quick release valve and the twenty-second interface of the foot brake valve.
Furthermore, the control unit adopts a single chip microcomputer controller, the single chip microcomputer controller is used for collecting relevant signals of the air path of the whole vehicle, communicating with the control unit of the whole vehicle, and controlling relevant parts in the air path to take emergency measures.
Further, the first relay valve and the second relay valve both adopt differential relay valves.
Further, water drain valves are arranged on the front axle air cylinder, the parking air cylinder, the auxiliary air cylinder and the rear axle air cylinder;
the front axle air cylinder and the rear axle air cylinder are both provided with low-voltage alarm switches;
and water drain valves are arranged on the front axle air cylinder and the rear axle air cylinder.
The working pressure of the air path braking system with the automatic braking function is generally 0.5MPA-1 MPA.
Compared with the prior art, the invention has the following beneficial effects:
the air circuit brake system with the automatic brake function has all functions of the traditional brake system on the basis, namely, when a driver brakes according to the running state of the whole vehicle in the normal driving process of the whole vehicle, the brake control of the whole vehicle can be implemented through the conventional brake unit. When the vehicle is in an unmanned state or a driver is tired and cannot send out related control signals of the whole vehicle according to a road surface state in time, the whole vehicle is emergently braked by the sensing unit of the gas circuit braking system with an automatic braking function, so that the safety performance of the whole vehicle in the driving process is effectively improved.
Meanwhile, the safety and the reliability of the whole vehicle in the running process can be well improved, the functional redundancy of the whole vehicle brake function is realized, and effective guarantee can be provided for the insufficient operation and even the improper operation of a driver through the help of the sensing system and the comprehensive analysis and calculation of the control unit, so that the running safety of the whole vehicle is better improved.
Drawings
Fig. 1 is a schematic structural diagram of the principle of the air path braking system with an automatic braking function according to the present invention.
Fig. 2 is a schematic structural diagram of the air path braking system with an automatic braking function according to the present invention.
Fig. 3 is a structural diagram of the air path braking system with an automatic braking function according to the present invention.
In the drawings:
1. the system comprises an air compressor, a dryer, a regeneration cylinder, a water drain valve, a four-circuit protection valve, a front axle air cylinder, a parking air cylinder, an auxiliary air cylinder, a rear axle air cylinder, a front axle brake air chamber I, a rear axle brake air chamber I, a relay valve II, a quick release valve I, a brake valve I, a foot brake valve I, a manual brake valve I, a hand brake valve I, a double-pointer air pressure gauge I, a brake lamp switch I, a low-pressure alarm switch I, a safety valve I, a test connector I, an automatic brake valve I, a front axle brake air chamber II, a rear axle brake air chamber II, a brake valve II and an ABS valve III, wherein the air compressor is 2, the auxiliary air cylinder is 8, the auxiliary air cylinder is 9, the rear;
28. a twenty-first dryer interface, 29, a twenty-second dryer interface, 30, a first dryer interface;
31. a fourth-circuit protection valve first interface, 32, a fourth-circuit protection valve twenty-first interface, 33, a fourth-circuit protection valve twenty-second interface, 34, a fourth-circuit protection valve twenty-fourth interface, 35, a fourth-circuit protection valve twenty-third interface;
36. 371, front axle air cylinder air outlet interface;
37. a third interface of the auxiliary air cylinder, 38, a second interface of the auxiliary air cylinder, 39, a first interface of the auxiliary air cylinder;
40. a first interface of the parking air cylinder, 41, a second interface of the parking air cylinder, 42, a third interface of the parking air cylinder;
43. a rear axle air cylinder first interface, 44. a rear axle air cylinder second interface, 45. a rear axle air cylinder third interface;
46. a first interface of the front axle brake chamber, 47. a second interface of the front axle brake chamber;
48. an eleventh interface of the rear axle brake chamber, 49. a twelfth interface of the rear axle brake chamber;
50. a second eleventh interface of the rear axle brake air chamber, 51. a second twelfth interface of the rear axle brake air chamber;
52. a first relay valve interface, 53. a second relay valve interface, 54. a fourth relay valve interface, 55. a forty-first relay valve interface, 56. a forty-second relay valve interface;
57. a second relay valve first interface, 58 a second relay valve second interface, 59 a second relay valve fourth interface, 60 a second relay valve forty-first interface;
61. the quick release valve comprises a first quick release valve port, 62, a second quick release valve port, 63 and a fourth quick release valve port;
ABS valve-first interface, 65.ABS valve-second interface;
66.ABS valve second first interface, 67 ABS valve second interface;
68.ABS valve three first interface, 69 ABS valve three second interface;
70. the eleventh interface of the foot brake valve, 71, the twelfth interface of the foot brake valve, 72, the twenty-first interface of the foot brake valve and 73, the twenty-second interface of the foot brake valve;
74. a first interface of a hand brake valve, 75, a second interface of the hand brake valve;
76. the automatic brake valve comprises an automatic brake valve first interface, 77 an automatic brake valve second interface, 78 an automatic brake valve eleventh interface, 79 an automatic brake valve twelfth interface, 80 an automatic brake valve twenty-first interface, 81 an automatic brake valve twenty-second interface, 82 a sensing unit, 83 a control unit;
ABS valve four, 85.ABS valve four first interface, 86.ABS valve four second interface.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the practice of the invention, certain features of the drawings may be omitted, enlarged or reduced, and do not represent actual product dimensions; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
As shown in fig. 1 to 3, the present invention provides an air path braking system with an automatic braking function, which includes a vehicle sensing unit 82, a control unit 83, a conventional braking unit and an automatic electric control electric braking execution unit, wherein the vehicle sensing unit 82 is connected with the control unit 83, and the control unit 83 is connected with the conventional braking unit through the automatic electric control electric braking execution unit;
the conventional brake unit comprises an air pump, a dryer 2 and a four-circuit protection valve 5;
the air pump is used for providing a pressure air source for the whole vehicle air path;
the dryer 2 is used for drying air;
the four-loop protection valve 5 is used for installing a gas circuit pressure sequential opening function;
a twenty-first dryer interface 28, a twenty-second dryer interface 29 and a first dryer interface 30 are arranged on the dryer 2;
a valve body of the four-loop protection valve 5 is provided with a first four-loop protection valve interface 31, a twenty-first four-loop protection valve interface 32, a twenty-second four-loop protection valve interface 33, a twenty-third four-loop protection valve interface 35 and a twenty-fourth four-loop protection valve interface 34;
the air pump is connected with a first interface on the dryer 2, a twenty-first interface 28 of the dryer is connected with a first interface on the four-loop protection valve 5, a twenty-second interface on the dryer 2 is connected with the regeneration cylinder 3, and the regeneration cylinder 3 is provided with a water drain valve 4.
As a further improvement of the above embodiment, the vehicle sensing unit 82 employs a range detection radar, a millimeter wave radar, and/or a laser radar.
As a further improvement of the above embodiment, the vehicle sensing unit 82 employs a camera for pattern image recognition.
As a further improvement of the above embodiment, the vehicle sensing unit 82 employs a radar and a camera.
As a further improvement of the above embodiment, the air pump employs an air compressor 1.
As a further improvement of the above embodiment, the automatic electronically-controlled electric brake execution unit includes a front axle air cylinder 6, a parking air cylinder 7, an auxiliary air cylinder 8, a rear axle air cylinder 9, a first front axle brake air chamber 10, a second front axle brake air chamber 24, a first rear axle brake air chamber 11, a second rear axle brake air chamber 25, a first relay valve 12, a second relay valve 13, a quick release valve 14, a first ABS valve 15, a second ABS valve 26, a third ABS valve 27, a fourth ABS valve 27, a foot brake valve 16, a hand brake valve 17, a double-pointer air pressure gauge 18, a brake lamp switch 19, a low-pressure alarm switch 20, a safety valve 20, a test connector 22 and an automatic brake valve 23;
the front axle air cylinder 6 is provided with a front axle air cylinder air inlet interface 36 and a front axle air cylinder air outlet interface 371;
the parking air cylinder 7 is provided with an auxiliary air cylinder 8, the parking air cylinder 7 and the auxiliary air cylinder 8 are integrated, and the auxiliary air cylinder 8 is provided with an auxiliary air cylinder first interface 39, an auxiliary air cylinder second interface 38 and an auxiliary air cylinder third interface 37;
the parking air cylinder 7 is provided with a first parking air cylinder interface 40, a second parking air cylinder interface 41 and a third parking air cylinder interface 42;
the rear axle air cylinder 9 is provided with a first rear axle air cylinder connector 43, a second rear axle air cylinder connector 44 and a third rear axle air cylinder connector 45;
the front axle brake air chamber I10 is provided with a first interface 46 of the front axle brake air chamber;
the front axle brake air chamber II 24 is provided with a first connector of the front axle brake air chamber II 24;
the rear axle brake air chamber I11 is provided with an eleventh interface 48 of the rear axle brake air chamber and a twelfth interface 49 of the rear axle brake air chamber;
the second rear axle brake chamber 25 is provided with a second eleventh interface 50 of the rear axle brake chamber and a second twelfth interface 51 of the rear axle brake chamber;
the relay valve I12 is provided with a relay valve I first interface 52, a relay valve I second interface 53, a relay valve I fourth interface 54, a relay valve I forty-first interface 55 and a relay valve I forty-second interface 56;
the second relay valve 13 is provided with a second relay valve first interface 57, a second relay valve second interface 58, a second relay valve fourth interface 59 and a second relay valve forty-first interface 60;
the quick release valve 14 is provided with a first quick release valve connector 61, a second quick release valve connector 62 and a fourth quick release valve connector 63;
the ABS valve I15 is provided with an ABS valve I first interface 64 and an ABS valve I second interface 65;
the second ABS valve 26 is provided with a second ABS valve first interface 66 and a second ABS valve second interface 67;
the third ABS valve 27 is provided with a third first ABS valve port 68 and a third second ABS valve port 69;
the ABS valve fourth port 84 is provided with an ABS valve fourth first port 85 and an ABS valve fourth second port 86;
the foot brake valve 16 is provided with an eleventh foot brake valve interface 70, a twelfth foot brake valve interface 71, a twenty-first foot brake valve interface 72 and a twenty-second foot brake valve interface 73;
the hand brake valve 17 is provided with a first hand brake valve interface 74 and a second hand brake valve interface 75;
the automatic brake valve 23 is provided with an automatic brake valve first interface 76, an automatic brake valve second interface 77, an automatic brake valve eleventh interface 78, an automatic brake valve twelfth interface 79, an automatic brake valve twenty-first interface 80 and an automatic brake valve twenty-second interface 81;
the air pump is connected with a first dryer interface 30, the regeneration cylinder 3 is connected with a twenty-second dryer interface 29, the twenty-first dryer interface 28 is connected with a first four-circuit protection valve interface 31, the twenty-third four-circuit protection valve interface 35 is connected with a first auxiliary air cylinder interface 39, the twenty-first four-circuit protection valve interface 32 is connected with a front axle air cylinder air inlet interface 36, the twenty-second four-circuit protection valve interface 33 is connected with a first rear axle air cylinder interface 43, and the twenty-third four-circuit protection valve interface 35 is connected with a first parking air cylinder interface 40;
the parking air cylinder second interface 41 is connected with the hand brake valve first interface 74, and the parking air cylinder third interface 42 is connected with the relay valve first interface 52;
the auxiliary air cylinder second interface 38 is connected with A, B, and a test connector 22 is arranged on a connecting pipeline between the auxiliary air cylinder second interface 38 and A, B; the auxiliary air cylinder third interface 37 is connected with C, D;
the test connector 22 is a reserved optional connector and is used for external connection of other external instruments and equipment such as external test, instrument display and the like or common gas path test equipment in the field.
A, B, C, D is a gas path reserved interface for external auxiliary equipment and instruments such as test and display air pressure.
The second rear axle air cylinder interface 44 is connected with the second relay valve interface 57, and the third rear axle air cylinder interface 45 is connected with the eleventh foot brake valve interface 70;
the front axle brake air chamber first interface 46 is connected with the ABS valve fourth second interface 86;
the eleventh interface 48 of the rear axle brake air chamber is connected with the second interface 65 of the ABS valve, and the twelfth interface 49 of the rear axle brake air chamber is connected with the second interface 53 of the relay valve;
the first forty-first interface 55 of the relay valve is connected with the second interface 75 of the hand brake valve, the first forty-second interface 56 of the relay valve is connected with the second forty-first interface 60 of the relay valve, the twenty-first interface 72 of the foot brake valve is connected with the first forty-second interface 56 of the relay valve and the second forty-first interface 60 of the relay valve, the connecting pipeline between the twenty-first interface 72 of the foot brake valve and the first forty-second interface 56 of the relay valve is connected with the brake lamp switch 19, and the fourth interface 54 of the relay valve is connected with the twelfth interface 51 of the rear axle brake air chamber;
the relay valve second fourth port 59 is connected with the ABS valve second first port 66, and the relay valve second port 58 is connected with the ABS valve first port 64;
the quick release valve first interface 61 is connected with the foot brake valve twenty-second interface 73, a brake lamp switch 19 is connected to a connecting pipeline between the quick release valve first interface 61 and the foot brake valve twenty-second interface 73, the quick release valve second interface 62 is connected with the ABS valve fourth first interface 85, and the quick release valve fourth interface 63 is connected with the front axle brake air chamber first second interface 47;
the twelfth interface 71 of the foot brake valve is connected with the air outlet interface 371 of the front axle air storage cylinder, and the foot brake valve 16 is provided with a double-pointer air pressure gauge 18;
the automatic brake valve first interface 76 and the automatic brake valve second interface 77 are both connected with the control unit 83, the automatic brake valve eleventh interface 78 is connected with the rear axle air cylinder third interface 45 and the foot brake valve eleventh interface 70, the automatic brake valve twelfth interface 79 is connected with the foot brake valve twelfth interface 71 and the front axle air cylinder air outlet interface 371, and the automatic brake valve twenty-first interface 80 is connected with the foot brake valve twenty-first interface 72, the relay valve forty-second interface 56 and the relay valve forty-first interface 60; the twenty-second interface 81 of the automatic brake valve is connected with the first interface 61 of the quick release valve and the twenty-second interface 73 of the foot brake valve.
As a further improvement of the above embodiment, the control unit 83 employs a single chip controller, and the single chip controller is used for collecting relevant signals of the gas path of the whole vehicle, communicating with the control unit of the whole vehicle, and controlling relevant components in the gas path to take emergency measures. For example, the single chip microcomputer controller may adopt an STM32F1 series single chip microcomputer controller in the prior art, such as STM32F103VET7, or a siercar series single chip microcomputer controller, or may adopt an 80C51 single chip microcomputer controller as the control unit 83.
As a further improvement of the above embodiment, a differential relay valve is adopted for both the first relay valve 12 and the second relay valve 13.
As a further improvement of the above embodiment, the front axle air cylinder 6, the parking air cylinder 7, the auxiliary air cylinder 8 and the rear axle air cylinder 9 are all provided with a water drain valve 4;
the front axle air cylinder 6 and the rear axle air cylinder 9 are both provided with a low-voltage alarm switch 20;
and the front axle air cylinder 6 and the rear axle air cylinder 9 are both provided with water drain valves 4.
The interfaces of the parts of the air path braking system with the automatic braking function are connected through a pneumatic pipeline.
The working pressure of the air path braking system with the automatic braking function is generally 0.5MPA-1 MPA.
The working principle of the air path braking system with the automatic braking function is as follows:
the air pump is used for providing a pressure air source for an air path of a whole vehicle, compressed air output by the air pump is dried by the dryer 2 and then flows to the four-loop protection valve 5 through the air path, and the air path protection valve has the function of sequentially opening the pressure of an installation air path, namely, firstly opening a twenty-first interface 32 of the four-loop protection valve, secondly opening a twenty-two interface 33 of the four-loop protection valve, secondly opening a twenty-three interface 35 of the four-loop protection valve, and finally opening a twenty-four interface 34 of the four-loop protection valve; the compressed air processed by the dryer 2 is sequentially conveyed to a front axle air storage tank, a rear axle air storage tank, a parking brake air storage tank and an auxiliary air storage tank 8 of the pressure air storage tanks through a twenty-first connector 28, a twenty-first connector 32 of a four-loop protection valve, a twenty-second connector 33 of the four-loop protection valve, a twenty-third connector 35 of the four-loop protection valve and a twenty-four connector 34 of the four-loop protection valve, and the working pressure of the air path system is generally 0.5MPA-1 MPA;
normal braking function: in the normal driving process, a driver controls the whole vehicle to run according to the running road condition of the vehicle, when braking is needed, the driver steps on a brake pedal, compressed air in a front axle air storage tank is firstly input through a twelfth connector 71 of a foot brake valve 16 through the brake pedal, the compressed air is output through a twenty-second connector 73 of the foot brake valve to reach a quick release valve 14, and the compressed air reaches a front axle brake air chamber through the quick release valve 14, so that the front wheel braking of the whole vehicle is realized.
Through the sequential opening function of the foot brake valve 16, compressed air in the rear axle air storage tank is input through the eleventh interface 70 of the foot brake valve 16, is output through the twenty-first interface 72 of the foot brake valve to reach the second and forty-first interfaces 60 of the relay valve, and is output through the relay valve to reach the first rear axle brake air chamber 11, so that the braking of the rear wheels of the whole vehicle is realized.
Automatic braking function/emergency braking function:
when the sensing unit 82 senses that an obstacle exists in front of the running vehicle during running of the vehicle, the sensing unit 82 outputs a relevant signal to the control unit 83, and when the control unit 83 detects that the driver does not take an effective braking and decelerating action or the driver takes a relevant action but the timeliness and effectiveness of the action are insufficient, the control unit 83 controls the automatic brake valve 23 to perform relevant actions so as to make up for the insufficiency or lack of the action of the driver.
The sensing unit 82 may be a system such as a millimeter-wave radar, a laser radar, or a camera for image recognition, or a composite sensing system composed of a radar and a camera, which is installed in the whole vehicle, and the main function of the system is to determine the traffic state of the vehicle in front of the vehicle and determine whether an unpredictable intrusion of a related object occurs.
After the control unit 83 judges according to the signal provided by the sensing unit 82, when automatic braking is performed, the internal air passages of the automatic brake valve 23 are sequentially opened, and compressed air of the twelfth interface 79 of the automatic brake valve is output to the first front axle air brake chamber and/or the first front axle air brake chamber through the twenty-second interface 81 of the automatic brake valve, so that the whole vehicle is braked; compressed air of the eleventh interface 78 of the automatic brake valve is output to the first rear axle air brake chamber and/or the first rear axle air brake chamber through the twelfth interface 79 of the automatic brake valve, and the whole vehicle is braked so as to avoid corresponding accidents;
the air circuit control of the automatic brake is independent of the conventional control air circuit of a driver, any one of the air circuit control and the conventional control air circuit of the driver can independently work to brake the whole vehicle, and can also be supplemented by an automatic electric control electric brake loop under the condition of insufficient brake of the driver, so that the running safety of the whole vehicle is improved; when any one of the two air passages works, the work of the other air passage is not influenced, so that the functional redundancy of braking is realized;
more particularly, when the brake pedal or the working control air path of the brake pedal fails due to a fault in the condition that the driver takes a braking action, the automatic electric control electric brake circuit can timely intervene in the braking operation through calculation and judgment of the control unit 83, so as to avoid accidents and dangers caused by the failure of the conventional braking control air path.
The gas path braking system with the automatic braking function can well improve the safety and reliability of the whole vehicle in the driving process, realize the functional redundancy of the whole vehicle braking function, and can well provide effective guarantee for the insufficient operation and even the improper operation of a driver through the help of the sensing unit 82 and the comprehensive analysis and calculation of the control unit 83, thereby better improving the driving safety performance of the whole vehicle.
After the control unit 83 judges according to the signal provided by the sensing unit 82, when automatic braking is performed, the internal air passages of the automatic brake valve 23 are sequentially opened, and compressed air of the twelfth interface 79 of the automatic brake valve is output to the first front axle air brake chamber and/or the first front axle air brake chamber through the twenty-second interface 81 of the automatic brake valve, so that the whole vehicle is braked; and outputting the compressed air of the eleventh interface 78 of the automatic brake valve to the first rear axle air brake chamber and/or the first rear axle air brake chamber through the twelfth interface 79 of the automatic brake valve, and braking the whole vehicle to avoid corresponding accidents.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. An air path braking system with an automatic braking function comprises a vehicle sensing unit, a control unit, a conventional braking unit and an automatic electric control electric braking execution unit, and is characterized in that the vehicle sensing unit is connected with the control unit, and the control unit is connected with the conventional braking unit through the automatic electric control electric braking execution unit;
the conventional brake unit comprises an air pump, a dryer and a four-loop protection valve;
the air pump is used for providing a pressure air source for the whole vehicle air path;
the dryer is used for drying air;
the four-loop protection valve is used for installing a gas circuit pressure sequential opening function;
the dryer is provided with a twenty-first dryer interface, a twenty-second dryer interface and a first dryer interface;
a valve body of the four-loop protection valve is provided with a first four-loop protection valve interface, a twenty-second four-loop protection valve interface, a twenty-third four-loop protection valve interface and a twenty-fourth four-loop protection valve interface;
the air pump is connected with a first interface on the dryer, a twenty-first interface of the dryer is connected with a first interface on the four-loop protection valve, a twenty-second interface on the dryer is connected with a regeneration cylinder, and a water drain valve is arranged on the regeneration cylinder.
2. The gas circuit brake system with automatic braking function of claim 1, wherein the vehicle sensing unit employs a range detection radar, a millimeter wave radar and/or a laser radar.
3. The gas circuit braking system with automatic braking function as claimed in claim 1, wherein the vehicle sensing unit employs a camera for image recognition.
4. The automatic braking function air circuit braking system of claim 1, wherein the vehicle sensing unit employs a radar and a camera.
5. The air path brake system with automatic braking function as claimed in claim 1, wherein the air pump is an air compressor.
6. The gas circuit brake system with automatic braking function according to claim 1, wherein the automatic electrically controlled electric brake actuation unit comprises a front axle gas cylinder, a parking gas cylinder, an auxiliary gas cylinder, a rear axle gas cylinder, a front axle brake chamber I, a front axle brake chamber II, a rear axle brake chamber I, a rear axle brake chamber II, a relay valve I, a relay valve II, a quick release valve, an ABS valve I, an ABS valve II, an ABS valve III, a foot brake valve, a hand brake valve, a two-pointer barometer, a brake light switch, a low pressure alarm switch, a safety valve, a test connector and an automatic brake valve;
the front axle air cylinder is provided with a front axle air cylinder air inlet interface and a front axle air cylinder air outlet interface;
the parking air cylinder is provided with an auxiliary air cylinder, the parking air cylinder and the auxiliary air cylinder are integrated, and the auxiliary air cylinder is provided with an auxiliary air cylinder first interface, an auxiliary air cylinder second interface and an auxiliary air cylinder third interface;
the parking air cylinder is provided with a first parking air cylinder interface, a second parking air cylinder interface and a third parking air cylinder interface;
the rear axle air cylinder is provided with a first rear axle air cylinder interface, a second rear axle air cylinder interface and a third rear axle air cylinder interface;
the front axle brake air chamber I is provided with a first interface of the front axle brake air chamber;
the front axle brake air chamber II is provided with a first interface of the front axle brake air chamber II;
the first rear axle brake chamber is provided with an eleventh interface of the rear axle brake chamber and a twelfth interface of the rear axle brake chamber;
the rear axle brake air chamber II is provided with a second eleventh interface of the rear axle brake air chamber and a second twelfth interface of the rear axle brake air chamber;
the first relay valve is provided with a first interface of the relay valve, a second interface of the relay valve, a fourth interface of the relay valve, a forty-first interface of the relay valve and a forty-second interface of the relay valve;
the second relay valve is provided with a second first interface of the relay valve, a second interface of the relay valve, a second fourth interface of the relay valve and a second forty-first interface of the relay valve;
the quick release valve is provided with a first quick release valve port, a second quick release valve port and a fourth quick release valve port;
the first ABS valve is provided with a first interface of the ABS valve and a second interface of the ABS valve;
the second ABS valve is provided with a second first interface of the ABS valve and a second interface of the ABS valve;
the third ABS valve is provided with a third first interface of the ABS valve and a third second interface of the ABS valve;
the fourth ABS valve is provided with a fourth first interface of the ABS valve and a fourth second interface of the ABS valve;
the foot brake valve is provided with an eleventh connector of the foot brake valve, a twelfth connector of the foot brake valve, a twenty-first connector of the foot brake valve and a twenty-second connector of the foot brake valve;
the hand brake valve is provided with a first hand brake valve interface and a second hand brake valve interface;
the automatic brake valve is provided with a first automatic brake valve interface, a second automatic brake valve interface, an eleventh automatic brake valve interface, a twelfth automatic brake valve interface, a twenty-first automatic brake valve interface and a twenty-second automatic brake valve interface;
the air pump is connected with a first dryer interface, the regeneration cylinder is connected with a twenty-second dryer interface, the twenty-first dryer interface is connected with a first four-loop protection valve interface, the twenty-three four-loop protection valve interface is connected with a first auxiliary air cylinder interface, the twenty-first four-loop protection valve interface is connected with a front axle air cylinder air inlet interface, the twenty-second four-loop protection valve interface is connected with a first rear axle air cylinder interface, and the twenty-third four-loop protection valve interface is connected with a first parking air cylinder interface;
the second interface of the parking air cylinder is connected with the first interface of the hand brake valve, and the third interface of the parking air cylinder is connected with the first interface of the relay valve;
the second interface of the auxiliary air cylinder is connected with A, B, and a test connector is arranged on a connecting pipeline of the second interface of the auxiliary air cylinder and A, B; the third interface of the auxiliary air storage cylinder is connected with C, D;
the second interface of the rear axle air cylinder is connected with the second first interface of the relay valve, and the third interface of the rear axle air cylinder is connected with the eleventh interface of the foot brake valve;
a first interface of the front axle brake air chamber is connected with a fourth second interface of the ABS valve;
an eleventh interface of the rear axle brake air chamber is connected with a second interface of the ABS valve, and a twelfth interface of the rear axle brake air chamber is connected with a second interface of the relay valve;
the first forty-first interface of the relay valve is connected with the second interface of the hand brake valve, the first forty-second interface of the relay valve is connected with the second forty-first interface of the relay valve, the twenty-first interface of the foot brake valve is connected with the first forty-second interface of the relay valve and the second forty-first interface of the relay valve, a brake lamp switch is arranged on a connecting pipeline between the twenty-first interface of the foot brake valve and the first forty-second interface of the relay valve in a connecting way, and the first fourth interface of the relay valve is connected with the second twelfth interface of the rear axle brake air chamber;
the second fourth interface of the relay valve is connected with the second first interface of the ABS valve, and the second interface of the relay valve is connected with the first interface of the ABS valve;
the first interface of the quick release valve is connected with the twenty-second interface of the foot brake valve, a brake lamp switch is connected to a connecting pipeline between the first interface of the quick release valve and the twenty-second interface of the foot brake valve, the second interface of the quick release valve is connected with the fourth first interface of the ABS valve, and the fourth interface of the quick release valve is connected with the first second interface of the front axle brake air chamber;
the twelfth interface of the foot brake valve is connected with the air outlet interface of the front axle air storage cylinder, and the foot brake valve is provided with a double-pointer air pressure meter;
the first interface of the automatic brake valve and the second interface of the automatic brake valve are both connected with the control unit, the eleventh interface of the automatic brake valve is connected with the third interface of the rear axle air cylinder and the eleventh interface of the foot brake valve, the twelfth interface of the automatic brake valve is connected with the twelfth interface of the foot brake valve and the air outlet interface of the front axle air cylinder, and the twenty-first interface of the automatic brake valve is connected with the twenty-first interface of the foot brake valve, the forty-second interface of the relay valve and the forty-first interface of the relay valve; and the twenty-second interface of the automatic brake valve is connected with the first interface of the quick release valve and the twenty-second interface of the foot brake valve.
7. The gas circuit braking system with the automatic braking function according to claim 1, wherein the control unit adopts a single chip microcomputer controller, and the single chip microcomputer controller is used for collecting relevant signals of a gas circuit of the whole vehicle, communicating with the control unit of the whole vehicle and controlling relevant parts in the gas circuit to take emergency measures.
8. The air path brake system with automatic braking function of claim 6, wherein the first relay valve and the second relay valve are differential relay valves.
9. The air path brake system with automatic braking function as claimed in claim 6, wherein the front axle air cylinder, the parking air cylinder, the auxiliary air cylinder and the rear axle air cylinder are all provided with water drain valves;
the front axle air cylinder and the rear axle air cylinder are both provided with low-voltage alarm switches;
and water drain valves are arranged on the front axle air cylinder and the rear axle air cylinder.
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| CN202010127760.4A CN111086493A (en) | 2020-02-28 | 2020-02-28 | Air circuit braking system with automatic braking function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010127760.4A CN111086493A (en) | 2020-02-28 | 2020-02-28 | Air circuit braking system with automatic braking function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113246942A (en) * | 2021-06-09 | 2021-08-13 | 天津所托瑞安汽车科技有限公司 | Line-controlled redundant brake system |
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