CN102133890B - Slope start-stop auxiliary safety system of motor vehicle - Google Patents
Slope start-stop auxiliary safety system of motor vehicle Download PDFInfo
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- CN102133890B CN102133890B CN 201010101303 CN201010101303A CN102133890B CN 102133890 B CN102133890 B CN 102133890B CN 201010101303 CN201010101303 CN 201010101303 CN 201010101303 A CN201010101303 A CN 201010101303A CN 102133890 B CN102133890 B CN 102133890B
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Abstract
The invention relates to a slope start-stop auxiliary safety system of a motor vehicle. The system comprises a sensor, an electric control unit and a power-driven linear actuator, wherein the sensor is communicated connection with the electric control unit, and the power-driven linear actuator is connected with the other end of the electric control unit through a lead. Compared with the prior art, the invention has wide range of applications and convenience in mounting, provides safety auxiliary guarantee and realizes the vehicle start-stop auxiliary safety function through slope resistance pre-calibration and a corresponding start torque recognition control algorithm, thereby enhancing driving safety.
Description
Technical field
The present invention relates to a kind of supplementary security system, especially relate to a kind of slope start-stop auxiliary safety system of motor vehicle.
Background technology
In the drive routine process, vehicle often need to temporarily stop in the ramp and starting again.To existing manual gear vehicle, when vehicle is upwards started to walk in the ramp, pedal of clutch need to be stepped on certain position, centre (also claiming " semi-linkage " position) to travel of clutch, control need to be adjusted according to the bearing load of automobile and the gradient size on slope in the semi-linkage position, that is to say, make pedal of clutch where mediate (be engine torque output size) need to manually adjust according to actual conditions.Vehicle on the ramp to parking and starting to walk to depend on whether smoothly that chaufeur is to the proficient of power-transfer clutch, brake and throttle compounding practice.For skilled manual automobile driver, they rule of thumb can control the semi-linkage state preferably, make self-propelled vehicle gentle start on the slope.But for unskilled manual chaufeur, uphill starting is the operative technique of a more difficult grasp, if it is bad that the semi-linkage technology is grasped, when starting to walk, the automobile half way up the mountain just is easy to cause automobile to slip car or flame-out, thereby the collision happens accident that causes vehicle and back, the accidental bodily injury who even causes goers outside vehicle.The situation of slipping after another recurrent car ramp is: forget when vehicle stops on the gentle slope to pull the hand brake, thereby cause slipping after vehicle the traffic accident that meets accident.
Only have on present domestic vehicle on some high-end riding and just be furnished with the ramp start assisting system, the call of each producer to the ramp ancillary system mainly contains: HHC (ramp ancillary system), HAC (ramp Starting control system), HAS (uphill starting supplementary controlled system), HDC (HDC) etc. are several.Although call differs, its radical function and principle are similar, are summarized as follows:
The main actuating unit of domestic at present typical half way up the mountain starting ancillary system mostly is hydraulic efficiency pressure system, and system realizes the uphill starting additional function by the disconnecting valve break-make of controlling between master brake cylinder and wheel wheel cylinder.The ramp ancillary system by the sensor detecting vehicle whether on the ramp, when vehicle during at uphill starting, chaufeur is stepped on the energising of brake pedal disconnecting valve, the system closing wheel cylinder is to the oil circuit of master cylinder direction, keep the pressure in the wheel wheel cylinder, namely keep certain breaking force, even this moment, pin left brake pedal, also can keep the vehicle short time to stop.Thereby give the gear shift of chaufeur time enough and the pedal of stepping on the throttle, when power-transfer clutch is attached to a certain degree, disconnecting valve outage when the moment of torsion of its transmission can just overcome breakaway force, brake off, start to walk to realize car ramp rapidly.
Existing BAS (Brake Assist System) mostly can be in the blink after the chaufeur loosen the brake (about 2 seconds) keep vehicle not slip the slope, the Braking system of short duration by this section postpones, reserve several seconds to chaufeur, be absorbed in throttle-clutch engagement and operate to realize uphill starting, thereby the poor chaufeur of driving quality can be operated calmly.But there is following defective in existing BAS (Brake Assist System):
(1) the main prestowage of existing ramp start assisting system is on high-end Passenger motor vehicle.Do not configure the ramp start assisting system on economical vehicle, particularly heavily loaded commercial vehicle.Therefore popularity is not high at home for the ramp start assisting system.
(2) more existing ramp ancillary systems are based on electric control mechanical type automatic speed variator (AMT) technology, system need to carry out accurate identification to breakaway force, the existing uphill starting ancillary system of part needs the chaufeur manual triggers in addition, thereby its range of use and function have limitation.
(3) existing ramp start assisting system must could be worked under the condition of vehicle operation (driving engine operation), and is flame-out if vehicle occurs in the uphill starting process, and start assisting system can not provide the extra brake safe function of slipping after automatically anti-.
Summary of the invention
Purpose of the present invention is exactly to provide for the defective that overcomes above-mentioned prior art existence the slope start-stop auxiliary safety system of motor vehicle that a kind of range of use is wide, easy for installation, safety factor is high.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of slope start-stop auxiliary safety system of motor vehicle, it is characterized in that, this system is comprised of sensor, ECU (Electrical Control Unit) and electric linear actr, described sensor and ECU (Electrical Control Unit) communication connection, and described electric linear actr is connected by wire with the other end of ECU (Electrical Control Unit).
Described sensor comprises ramp sensor, tachogen, throttle position switch, clutch sensor and limit sensors, and the sensor is used for the collection vehicle work state information.
Described ECU (Electrical Control Unit) is the core of control system, and the surface-mounted integrated circuit and the corresponding software of controlling that are comprised of microprocessor module, power module, data memory module, input signal conditioning module, output driver module form.
described electric linear actr comprises drive motor, the worm speed reducer structure, bearing and bearing seat, guide pin bushing, screw mandrel, the push rod inner tube, push rod, pipe link and integral type parking brake extension bar, described drive motor is connected through wire with ECU (Electrical Control Unit), described worm speed reducer structure one end connects drive motor, other end connection bearing and bearing seat, described guide pin bushing is connected with bearing and bearing seat, described screw mandrel is located at the bottom in guide pin bushing, described ejector sleeve inner tube is located at the inside of guide pin bushing, this ejector sleeve inner tube rear end connection push rod, described pipe link is located at the rear end of push rod, this pipe link is connected with the middle part of integral type parking brake extension bar.
Described integral type parking brake extension bar one end connects the parking brake pull bar, and the other end connects the brake cable pull at car side brake place.
Compared with prior art, the present invention has the following advantages:
(1) range of use of the present invention is wide, easy for installation.Not only can independently install additional on economical manned vehicle, also can be applicable to commercial vehicle/comm..vehicle, as carriage of vehicles such as large and medium bus, lorries;
(2) the auxiliary guarantee of safety provided by the present invention need not the chaufeur manual triggers, also need not the AMT system based on vehicle, but divide existing sensor signal by the sensor that installs additional and vehicle upper, realize vehicle start-stop auxiliary security function by pre-the demarcation with corresponding starting moment of torsion identification control algorithm of gradient resistance;
(3) no matter vehicle launch whether, the present invention realizes automatically in the time of can slipping that vehicle parks after car ramp occurs, thus the enhancing travel safety.For self-propelled vehicle provides extra ramp operation safety.
Description of drawings
Fig. 1 is structural representation of the present invention.
In figure, 1 is that drive motor, 2 is that worm speed reducer structure, 3 is that bearing and bearing seat, 4 are that guide pin bushing, 5 is that screw mandrel, 6 is that push rod inner tube, 7 is that push rod, 8 is that pipe link, 9 is integral type parking brake extension bar.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
A kind of slope start-stop auxiliary safety system of motor vehicle, its structure as shown in Figure 1, this system is comprised of sensor, ECU (Electrical Control Unit) and electric linear actr, sensor comprises ramp sensor, tachogen, throttle position switch, clutch sensor and limit sensors, and the sensor is used for the collection vehicle work state information.Sensor and ECU (Electrical Control Unit) communication connection.
ECU (Electrical Control Unit) (Electronic Control Unit, be called for short ECU) be the core of control system, by microprocessor module, power module, data memory module, the input signal conditioning module, the surface-mounted integrated circuit that the output driver module forms and the corresponding software of controlling form, its Main Function is that the various signals of inputting sensor and master cock input are carried out computing, process, judgement inclination of vehicle angle, the intention whether start and stop are arranged, accelerator pedal position, clutch pedal position and clutch engagement etc., then according to the reflection vehicle condition that gathers, the electric signal of road conditions and driving intention is as the control decision foundation, according to designed control algorithm output control command, control relevant actuating unit and produce the action corresponding with control command, the automobile controlled system is realized fast, automatically start-stop auxiliary security in ramp is controlled accurately.The electric linear actr is connected by wire with the other end of ECU (Electrical Control Unit).
the electric linear actr comprises drive motor 1, worm speed reducer structure 2, bearing and bearing seat 3, guide pin bushing 4, screw mandrel 5, push rod inner tube 6, push rod 7, pipe link 8 and integral type parking brake extension bar 9, drive motor 1 is connected through wire with ECU (Electrical Control Unit), one end of worm speed reducer structure 2 connects drive motor 1, other end connection bearing and bearing seat 3, guide pin bushing 4 is connected with bearing and bearing seat 3, screw mandrel 5 is located at the bottom in guide pin bushing 4, ejector sleeve inner tube 6 is located at the inside of guide pin bushing 4, this ejector sleeve inner tube 6 is put into the rear end and is connected push rod 7, pipe link 8 is located at the rear end of push rod 7, this pipe link 8 is connected with the middle part of integral type parking brake extension bar 9.One end of integral type parking brake extension bar 9 connects the parking brake pull bar, and the other end connects the brake cable pull at car side brake place.
The principle of work of electric linear actr: drive motor 1 drives the 2 rear decelerations of worm speed reducer structure, driving screw mandrel 4 rotates, the motion that is in line of the rotation motion of motor, utilize the rotating of the positive and negative driving worm speed reducer of electrical motor structure to drive the expanding-contracting action of push rod; Drive the action of integral type parking brake extension bar 9 by the straight linear motion of push rod 7, thereby realize the functions such as automatic parking brake, braking release, misoperation protection.
The design feature of integral type parking brake extension bar 9 is: when chaufeur pulled hand brake lever to carry out braking during standstill, brake cable pull was controlled to handle by integral type parking brake extension bar by hand brake lever and is realized braking during standstill; When slipping after the proper operation vehicle does not cause vehicle on the ramp when chaufeur, brake cable pull is controlled by integral type parking brake extension bar by pipe link and is handled the autobrake that realizes vehicle; And the electric linear actr that pipe link is controlled by ECU (Electrical Control Unit) is handled.Therefore, can realize independently vehicle autobrake and manual parking braking by integral type parking brake extension bar, not produce and interfere with each other.
The characteristics of slope start-stop auxiliary safety control method are: when vehicle is started to walk, the breakaway force that vehicle is under the various gradients is carried out computational analysis on the ramp, draw breakaway force; , estimate and judge engine torque output in conjunction with stroke and speed signal and engine speed and Das Gaspedal stroke signal by power-transfer clutch; Vehicle is in breakaway force under various ramps and moment of torsion output and makes respectively the default arteries and veins spectrum of demarcating and leave in the ECU internal memory and control parameter as ECU, the pre-arteries and veins spectrum of demarcating can be guaranteed during brake off, to guarantee that vehicle has enough power and overcomes breakaway force on suitable opportunity on the ramp.When vehicle in the situation that the ramp Parking and produce after slip and slip after may or occuring, system ECU will trigger electric actuator and implement braking during standstill when following condition is set up, with performance auxiliary security braking function: (1) vehicle is anchored on the ramp; (2) brake pedal discharges; (3) the parking brake braking during standstill discharges (4) gear and is not in reverse gear.
Can find out from above control logic, it is auxiliary that slope start-stop auxiliary safety namely can be used for uphill starting, also can be used for vehicle and meet accident and play the function of auxiliary security when slipping the slope.
Claims (3)
1. slope start-stop auxiliary safety system of motor vehicle, it is characterized in that, this system is comprised of sensor, ECU (Electrical Control Unit) and electric linear actr, described sensor and ECU (Electrical Control Unit) communication connection, and described electric linear actr is connected by wire with the other end of ECU (Electrical Control Unit);
described electric linear actr comprises drive motor, worm gear reducer mechanism, bearing and bearing seat, guide pin bushing, screw mandrel, the push rod inner tube, push rod, pipe link and integral type parking brake extension bar, described drive motor is connected through wire with ECU (Electrical Control Unit), described worm gear reducer mechanism one end connects drive motor, other end connection bearing and bearing seat, described guide pin bushing is connected with bearing and bearing seat, described screw mandrel is located at the bottom in guide pin bushing, described ejector sleeve inner tube is located at the inside of guide pin bushing, this ejector sleeve inner tube rear end connection push rod, described pipe link is located at the rear end of push rod, this pipe link is connected with the middle part of integral type parking brake extension bar, described integral type parking brake extension bar one end connects the parking brake pull bar, and the other end connects the brake cable pull at car side brake place.
2. a kind of slope start-stop auxiliary safety system of motor vehicle according to claim 1, it is characterized in that, described sensor comprises ramp sensor, tachogen, throttle position switch, clutch sensor and limit sensors, but sensor collection vehicle work state information.
3. a kind of slope start-stop auxiliary safety system of motor vehicle according to claim 1, it is characterized in that, described ECU (Electrical Control Unit) is the core of control system, and the surface-mounted integrated circuit and the corresponding software of controlling that are comprised of microprocessor module, power module, data memory module, input signal conditioning module, output driver module form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010101303 CN102133890B (en) | 2010-01-26 | 2010-01-26 | Slope start-stop auxiliary safety system of motor vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010101303 CN102133890B (en) | 2010-01-26 | 2010-01-26 | Slope start-stop auxiliary safety system of motor vehicle |
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| CN102133890A CN102133890A (en) | 2011-07-27 |
| CN102133890B true CN102133890B (en) | 2013-06-12 |
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| CN 201010101303 Expired - Fee Related CN102133890B (en) | 2010-01-26 | 2010-01-26 | Slope start-stop auxiliary safety system of motor vehicle |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556070B (en) * | 2012-01-16 | 2015-05-20 | 浙江吉利汽车研究院有限公司 | Automobile backward slip resistant device |
| CN104975901A (en) * | 2014-04-10 | 2015-10-14 | 上海柴油机股份有限公司 | Safety control device of engine retarder |
| CN111683844B (en) * | 2017-12-29 | 2023-06-23 | Zf主动安全美国股份公司 | Traction control rollback mitigation on asymmetric coefficient of friction ramps |
| CN112124271B (en) * | 2020-09-27 | 2022-08-23 | 东风柳州汽车有限公司 | Electronic parking brake release control method |
| CN114407897A (en) * | 2022-01-20 | 2022-04-29 | 东风汽车股份有限公司 | Vehicle ramp auxiliary function trigger control method, recording medium and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101032960A (en) * | 2007-01-22 | 2007-09-12 | 余晓鹏 | Electric parking and braking device |
| CN101205970A (en) * | 2006-12-22 | 2008-06-25 | 比亚迪股份有限公司 | Control device and method for AMT vehicle sloping route starting |
| CN101391603A (en) * | 2008-10-27 | 2009-03-25 | 浙江亚太机电股份有限公司 | Electric-controlled unit for vehicle electric halt vehicle brake system |
| CN101537831A (en) * | 2009-04-13 | 2009-09-23 | 浙江亚太机电股份有限公司 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2431444B (en) * | 2005-10-21 | 2011-04-13 | Ford Global Tech Llc | Brake control system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205970A (en) * | 2006-12-22 | 2008-06-25 | 比亚迪股份有限公司 | Control device and method for AMT vehicle sloping route starting |
| CN101032960A (en) * | 2007-01-22 | 2007-09-12 | 余晓鹏 | Electric parking and braking device |
| CN101391603A (en) * | 2008-10-27 | 2009-03-25 | 浙江亚太机电股份有限公司 | Electric-controlled unit for vehicle electric halt vehicle brake system |
| CN101537831A (en) * | 2009-04-13 | 2009-09-23 | 浙江亚太机电股份有限公司 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
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