CN205034095U - Man -machine two car brakeing automatic control system who drives two accuses - Google Patents

Man -machine two car brakeing automatic control system who drives two accuses Download PDF

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Publication number
CN205034095U
CN205034095U CN201520708069.XU CN201520708069U CN205034095U CN 205034095 U CN205034095 U CN 205034095U CN 201520708069 U CN201520708069 U CN 201520708069U CN 205034095 U CN205034095 U CN 205034095U
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China
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brake
valve
gas circuit
vehicle
autobrake
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CN201520708069.XU
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Chinese (zh)
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李珺
郭李平
吕金桐
路晓静
汤望
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Zhengzhou Yutong Bus Co Ltd
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Zhengzhou Yutong Bus Co Ltd
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Abstract

The utility model relates to a man -machine two car brakeing automatic control system who drives two accuses, this system include brake valve, vehicle air pressure brake system and automatic brake control gas circuit, and the brake valve passes through the air pressure brake gas circuit and connects vehicle air pressure brake system, and brake pedal connects the brake valve, and automatic brake control gas circuit is parallelly connected with the brake valve, and the automatic brake pilot -gas is equipped with the solenoid valve on the road, and the solenoid valve electricity is connected with the controller. When the vehicle in manual brake mode lower time, if brake force was not enough this moment, so, controller control solenoid is corresponding to switch on, carries out automatic brake. The brake force that automatic brake produced this moment is great, can satisfy the vehicle and effectively brake, has shortened braking distance, has guaranteed the driving safety of vehicle.

Description

A kind of man-machine two car brakeing autonomous cruise speed system driving dual control
Technical field
The utility model relates to a kind of man-machine two car brakeing autonomous cruise speed system driving dual control, belongs to vehicle autobrake control field.
Background technology
At present, the friction braking mode of vehicle routine is compression air brake or hydraulic braking, and the groundwork of compression air brake is: as shown in Figure 1, when braking, step on brake pedal, and control brake activation valve and open, the high pressure gas in brake cylinder are braked to brake assemblies by brake activation valve; Hydraulic braking is generally made up of oil pump, energy storage and solenoid electric valve, its principle and compression air brake similar.
Along with the development of each system electronic control technology of automobile, the autobrake of brake system of car has also become an important supporting technology, prevent in the collision of vehicle, to cruise control, all many-sides such as intelligent driving play basic effect, especially prevent automobile occur under emergency case artificial brake failure or fault in play a part more and more important.If application number is 201410401176.8, denomination of invention is the Chinese patent application of " a kind of automobile auto brake system ", disclose a kind of auto brake system based on hydraulic braking, this system is in conventional hydraulic formula brake system, add the brake oil circuit of a road primarily of formations such as braking motor-drive pump, brake accumulator and drg conversion electromagnetic valves.This system can carry out autobrake under special circumstances effectively, but has the mechanism such as motor-drive pump, energy storage, the overall more complicated of brake system in the newly-increased brake circuit of this system, and the cost dropped into is higher.
Utility model content
The purpose of this utility model is to provide a kind of man-machine two car brakeing autonomous cruise speed system driving dual control, in order to solve the complex structure of existing auto brake system, and the problem that input cost is high.
For achieving the above object, scheme of the present utility model comprises a kind of man-machine two car brakeing autonomous cruise speed system driving dual control, comprise brake cylinder, brake activation valve and brake assemblies, brake cylinder connects brake assemblies by a pedal brake gas circuit, described pedal brake gas circuit is serially connected with a brake activation valve, brake pedal connects described brake activation valve; Described autonomous cruise speed system also comprises autobrake and controls gas circuit, it is in parallel with described pedal brake gas circuit that described autobrake controls gas circuit, described autobrake controls gas circuit and is provided with the electromagnetic valve controlling gas circuit for autobrake described in conducting, and described electromagnetic valve is electrically connected with the controller for controlling this solenoid valve conduction.
Described autonomous cruise speed system also comprises an obstacle distance detecting device, and described controller sampling connects described detecting device.
Described obstacle distance detecting device is radar detection device.
In the autonomous cruise speed system that the utility model provides, only at the two ends of the brake activation valve be connected with brake pedal, an autobrake in parallel controls gas circuit, this gas circuit is connected with Controlling solenoid valve, this electromagnetic valve is used for this autobrake of conducting and controls gas circuit, is electrically connected this electromagnetic valve controls this solenoid valve conduction to be implemented in by a controller.Merely add a controller and electromagnetic valve in this autonomous cruise speed system, in addition do not arrange other device, brake system is totally fairly simple, and the cost dropped into is lower.
And this control system comprises two kinds of brake control modes: the hand brake mode that driver steps on brake pedal and brakes and the autobrake mode that electromagnetic valve is braked according to the instruction of controller; When vehicle is under hand brake mode, if when judging that braking force is not enough, controller sends braking instruction, the corresponding conducting of Controlling solenoid valve, carry out autobrake, the braking force of now autobrake generation is comparatively large, can meet vehicle effective brake, shorten stopping distance, ensure that the traffic safety of vehicle.
Accompanying drawing explanation
Fig. 1 is man-machine two structural representation driving the car brakeing autonomous cruise speed system of dual control;
Fig. 2 is man-machine two control flow chart driving the car brakeing autonomous cruise speed system of dual control.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Man-machine two car brakeing autonomous cruise speed system driving dual control as shown in Figure 1, comprise two cover braking subsystems, a road is that driver brakes subsystem, i.e. hand brake subsystem, and another road is autobrake subsystem.This compression air brake subsystem comprises a connection gas circuit be connected between brake cylinder and brake assemblies, and this connection gas circuit is serially connected with brake activation valve, this brake activation valve of brake pedal control linkage, can control this brake activation valve conducting by stepping on brake pedal; Autobrake subsystem comprises an autobrake and controls gas circuit, this autobrake controls gas circuit and is connected gas circuit parallel connection with above-mentioned, control in this autobrake gas circuit to be provided with the switch electromagnetic valve controlling gas circuit for conducting autobrake, this switch electromagnetic valve is electrically connected with an automatic controlling system device, this controller is for controlling this solenoid valve conduction or shutoff, in order to the control of autobrake can be realized, this automatically controls subsystem and also comprises an obstacle distance detecting device, and controller sampling connects this detecting device.This obstacle distance detecting device can be radar detection device, can also be laser detector, in the present embodiment, for radar detection device.
As shown in Figure 1, in a vehicle, vehicle itself has two cover brake system, be respectively front-wheel and rear service brake system, wherein, front wheel brake system is identical with the brake equipment that rear service brake system comprises, and two cover brake equipments include switch electromagnetic valve, brake activation valve, relay valve, brake cylinder etc.Wherein, front wheel brake equipment comprises switch electromagnetic valve 1, brake activation valve 5, relay valve 3, brake cylinder 2 etc.; Rear service brake equipment comprises switch electromagnetic valve 8, brake activation valve 6, relay valve 9, brake cylinder 7 etc.But in a vehicle, only need an auto brake system controller and brake pedal 4, so this controller controls two switch electromagnetic valves 1,8 in the brake system of front and back simultaneously, each self-corresponding brake system of each solenoid control, carries out brake operating.
Two switch electromagnetic valves are all 2/2-way valves, and these two electromagnetic valves are these man-machine two cores of driving the car brakeing autonomous cruise speed system of dual control, for controlling the break-make of braking gas circuit in braking gas circuit.Electromagnetic valve in the energized state, open by spool, and valve body gangway is communicated with; Under off-position, spool closes, and valve body gangway turns off.
In the present embodiment, switch electromagnetic valve, when carrying out braking gas path on-off and controlling, is reached the object controlling braking gas circuit air pressure size, thus can realize the control to braking force size by the ratio value changing the make-and-break time of electromagnetic valve within the certain hour cycle.Be specially, several obstacle distance threshold values are set in the controller, the ratio value of the make-and-break time of the corresponding electromagnetic valve of the threshold interval that every two adjacent thresholds are formed; When actual distance value between vehicle and obstacle meets some threshold intervals, controller carries out corresponding break-make according to the ratio value Controlling solenoid valve of the make-and-break time of electromagnetic valve corresponding to this threshold interval, produces corresponding braking force brake with this.
This man-machine two car brakeing autonomous cruise speed system driving dual control has two kinds of brake control modes, and one is hand brake mode, and which is stepped on brake pedal by driver and produced.When driver steps on brake pedal, brake activation valve conducting, high pressure gas in brake cylinder enter in front-rear axle brake assemblies by brake activation valve, and raw corresponding to pedal angle brake-pressure, this brake-pressure is passed to brake wheel cylinder and brakes by front-rear axle brake assemblies.Another kind of brake mode is autobrake mode, for: radar detection device detects the actual distance of vehicle and obstacle in real time, and by the distance information transmission of detection to controller, the threshold interval judging that this actual distance information meets analyzed by controller according to vehicle and the actual distance information of obstacle and a series of threshold intervals of inner setting, and the break-make of corresponding control front-rear axle two switch electromagnetic valves is carried out according to the make-and-break time ratio of this electromagnetic valve corresponding to threshold interval met, and then front-rear axle corresponding generation brake-pressure, then equally by front-rear axle brake assemblies, this brake-pressure correspondence is passed to brake wheel cylinder and brake.In addition, under normal motoring condition, two kinds of brake mode all can normally be carried out, and, separate between two kinds of brake mode, be independent of each other.
When vehicle to carry out in the process of braking in hand brake mode, radar detection device detects the actual distance of vehicle and obstacle in real time, when actual distance meets some threshold intervals, controller controls front-rear axle electromagnetic valve according to the ratio value of the make-and-break time of electromagnetic valve corresponding to this threshold interval and carries out corresponding break-make, produce corresponding braking force with this to brake, to realize autobrake mode.
When vehicle carries out in braking procedure under autobrake mode, if now driver perceives the braking force deficiency of vehicle, so, driver steps on brake pedal, carries out hand brake.
Above two kinds of situations are all under a kind of brake mode does not meet the prerequisite of brake request, increase another kind of brake mode, and when another kind of mode also puts into control for brake, now vehicle carries out two kinds of brake mode simultaneously.The braking gas circuit corresponding due to these two kinds of brake mode is in parallel, so, when two kinds of brake mode all drop into, two braking gas circuits communicate, and the braking pressure that brake assemblies responds is the greater between the braking pressure that produces under brake pedal steps on the braking pressure of generation and autobrake mode.
When two kinds of brake mode all drop into, braking pressure is both the greater; When only having a brake mode to drop into, the brake-pressure that also namely another kind of brake mode produces is zero, and this situation also can be understood as the greater that braking pressure is for both.
For working as vehicle in hand brake mode process, autobrake mode still starts this situation, can think and occur that the wherein one in following two kinds of possibilities just causes above-mentioned situation to occur:
The first, in hand brake mode process, controller is through judging, think that current braking force is not enough, thus brake according to the analysis result of oneself, so, the braking force now given under autobrake is larger, braking force under final brake wheel cylinder response autobrake mode, thus ensure car brakeing safety.
The second, driver brakes normally, and nonstick system of control moves subsystem and also normally works, just nonstick system of control moves subsystem startup a little later, more late owing to starting, the obstacle distance of detection can diminish, so nonstick system of control moves subsystem also will send the braking force instruction larger compared with driver's braking.In this case, system will be braked according to larger braking pressure always, ensures traffic safety.
For working as vehicle in autobrake mode process, driver still needs to step on this situation of brake pedal, can think and occur following possibility: autobrake subsystem breaks down, the braking force instruction provided is less, thus normally can not ensure that stopping distance is enough little, in this case, driver steps on brake pedal, there is provided larger braking force, brake wheel cylinder by the normal brake application instruction of response driver, thus ensures vehicle safety.
In the present embodiment, when two kinds of brake mode all exist, the braking pressure that brake assemblies responds is the greater between the braking pressure that produces under brake pedal steps on the braking pressure of generation and autobrake mode.Because if brake wheel cylinder response is the air pressure sum that two kinds of brake mode apply, then may greatly increase vehicle in the current situation should by the braking force of granting, and then, may too shorten its stopping distance, this causes the danger of knocking into the back by likely occurring rear car reply too late to this car.Adopt the greater in two kinds of brake mode, first effectively shorten stopping distance, ensure that the good braking of vehicle; Secondly, too can not shorten stopping distance, avoid the danger occurring vehicle rear-end collision.
Because two kinds of brake mode in this car brakeing autonomous cruise speed system can individualism and enforcement, so when hand brake mode breaks down, controller carries out corresponding control to the distance of obstacle to electromagnetic valve according to vehicle, to carry out autobrake; When autobrake mode breaks down, driver can carry out corresponding hand brake control according to brake pedal.
This man-machine two car brakeing autonomous cruise speed system driving dual control not only can realize the control of autobrake, can also realize the automatic control of braking during standstill.When vehicle needs to carry out braking during standstill, controller control front-rear axle switch electromagnetic valve or only back axle electromagnetic valve are opened, make braking gas circuit normal open (no longer carrying out the control of certain make-and-break time ratio), thus front-rear axle or back axle brake wheel cylinder can be made to brake, thus realize parking; Also can use conventional parking mode, by parking brake 10, the high pressure gas in parking cylinder 11 be entered in relay valve 12, thus back axle brake wheel cylinder is braked, thus realize parking.
As shown in Figure 1, when vehicle is not braked, compressed-air actuated propons air bag, back axle air bag and parking air bag are housed be connected with 3 relay valves of parking with propons, back axle respectively, these 3 relay valves are connected with front-rear axle air chamber (namely car side brake), and now relay valve is the state be communicated with air; When driver's hand brake, driver steps on brake pedal, and brake activation valve is opened, and therefore front and back gas circuit is also opened, and the pressurized air in the air bag of front and back injects 4 air chambers of front-rear axle by relay valve, brakes; When autobrake, two switch electromagnetic valves that controller can control front-rear axle carry out on-off action with certain opening/closing time ratio, thus make the pressurized air in the air bag of front and back be injected 4 air chambers of front-rear axle by relay valve, brake; During driver's braking during standstill, driver's pull-up parking brake valve, the pressurized air in parking air bag injects two air chambers of back axle by parking brake valve, realizes parking; During vehicle automatic parking brake, the electromagnetic valve that controller can control back axle is opened and is in the state of normal open, thus makes the pressure gas in parking air bag inject two air chambers of back axle by rear axle relay valve, realizes braking during standstill.
In Fig. 1, the numeral of each port on each equipment such as switch electromagnetic valve, relay valve represents corresponding port separately.
In above-described embodiment, give a kind of mode of electromagnetic valve, adopt the ratio value of make-and-break time to carry out the break-make of Controlling solenoid valve, certainly, electromagnetic valve is not limited to above-mentioned mode, as other embodiment, electromagnetic valve also can a normal open and normal off two kinds of modes, when obstacle distance detecting device detects that the distance between vehicle and obstacle is less than a setting threshold, so, controller sends braking instruction, and the corresponding conducting of Controlling solenoid valve, carries out autobrake.
In above-described embodiment, controller connects an obstacle distance detecting device, whether sufficient by the Distance Judgment braking force detected between vehicle and obstacle, but the utility model is not limited to above-described embodiment, as other embodiment, thing distance detection device of not placing obstacles in system, but controller receives the information of external transmission, the demand braking force instruction of such as superior system, and calculate required braking force according to this requirement command, then carry out autobrake control.
A kind of concrete brake system is given in above-described embodiment, comprise relay valve, brake wheel cylinder etc., these belong to the brake system of vehicle itself, the structure of the brake system of these vehicles itself is not lain in due to emphasis of the present utility model, so the utility model is not limited to the brake system of the vehicle provided in above-described embodiment itself.
Be presented above concrete embodiment, but the utility model is not limited to described embodiment.Basic ideas of the present utility model are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present utility model, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out embodiment when not departing from principle of the present utility model and spirit, amendment, replacement and modification still fall in protection domain of the present utility model.

Claims (3)

1. man-machine two car brakeing autonomous cruise speed system driving dual control, it is characterized in that, comprise brake cylinder, brake activation valve and brake assemblies, brake cylinder connects brake assemblies by a pedal brake gas circuit, described pedal brake gas circuit is serially connected with a brake activation valve, brake pedal connects described brake activation valve; Described autonomous cruise speed system also comprises autobrake and controls gas circuit, it is in parallel with described pedal brake gas circuit that described autobrake controls gas circuit, described autobrake controls gas circuit and is provided with the electromagnetic valve controlling gas circuit for autobrake described in conducting, and described electromagnetic valve is electrically connected with the controller for controlling this solenoid valve conduction.
2. man-machine two car brakeing autonomous cruise speed system driving dual control according to claim 1, it is characterized in that, described autonomous cruise speed system also comprises an obstacle distance detecting device, and described controller sampling connects described detecting device.
3. man-machine two car brakeing autonomous cruise speed system driving dual control according to claim 2, it is characterized in that, described obstacle distance detecting device is radar detection device.
CN201520708069.XU 2015-09-14 2015-09-14 Man -machine two car brakeing automatic control system who drives two accuses Active CN205034095U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105151021A (en) * 2015-09-14 2015-12-16 郑州宇通客车股份有限公司 Car braking automatic control system and control method having man-machine double driving and double control function
CN109987071A (en) * 2019-03-25 2019-07-09 开沃新能源汽车集团有限公司 A kind of novel unmanned bus line control brake system
CN111252054A (en) * 2020-01-20 2020-06-09 中车株洲电力机车有限公司 Braking system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105151021A (en) * 2015-09-14 2015-12-16 郑州宇通客车股份有限公司 Car braking automatic control system and control method having man-machine double driving and double control function
CN105151021B (en) * 2015-09-14 2018-01-19 郑州宇通客车股份有限公司 A kind of man-machine double vehicle braking automatic control systems and its control method for driving dual control
CN109987071A (en) * 2019-03-25 2019-07-09 开沃新能源汽车集团有限公司 A kind of novel unmanned bus line control brake system
CN111252054A (en) * 2020-01-20 2020-06-09 中车株洲电力机车有限公司 Braking system
CN111252054B (en) * 2020-01-20 2021-09-17 中车株洲电力机车有限公司 Braking system

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