CN103192832A - Snowfield mode control system for vehicle and snowfield mode control method for vehicle - Google Patents
Snowfield mode control system for vehicle and snowfield mode control method for vehicle Download PDFInfo
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- CN103192832A CN103192832A CN2013101548875A CN201310154887A CN103192832A CN 103192832 A CN103192832 A CN 103192832A CN 2013101548875 A CN2013101548875 A CN 2013101548875A CN 201310154887 A CN201310154887 A CN 201310154887A CN 103192832 A CN103192832 A CN 103192832A
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Abstract
The invention relates to a snowfield mode control system for a vehicle and a snowfield mode control method for the vehicle. The snowfield mode control system for the vehicle comprises a rotating speed detection module, an accelerator pedal opening-degree detection module and a master control unit, wherein the rotating speed detection module is used for detecting information of rotating speeds of a front wheel and a rear wheel of the vehicle in real time and transmitting the detected information to the master control unit; the accelerator pedal opening-degree detection module is used for detecting vehicle accelerator pedal opening-degree information in real time and transmitting the detected information to the master control unit; and information of a threshold value of the rotating speed difference of the front wheel and the rear wheel of the vehicle in a snowfield mode and the accelerator pedal opening-degree maximum value are stored inside the master control unit, and the master control unit receives the information detected by the rotating speed detection module and the accelerator pedal opening-degree detection module in real time, calculates the detected information and compares the calculation result with the information stored inside to control an engine to run in a corresponding mode. The snowfield mode control system for the vehicle has less electrical wiring and simple principles, can control the vehicle to automatically switch to a running mode accurately, and is suitable for various vehicles with automatic transmissions.
Description
Technical field
The present invention relates to a kind of control system of vehicle mode, relate in particular to a kind of vehicle snowfield schema control system.The invention still further relates to a kind of above-mentioned vehicle snowfield control system and control the method that vehicle switches to the snowfield pattern.
Technical background
Along with vehicle occupies more and more important position in people's daily life, the safety of vehicle becomes the direct foundation of a vehicle quality of consumer evaluation.The safety performance that vehicle travels on wet and slippery ground such as sleet skies is a big important component part of car load safety.
Existing automatic catch vehicle mostly is provided with the snowfield pattern, when situation that accumulated snow, rainwater, ice sheet etc. skid easily appears in the road surface, chaufeur can be by pressing near the button that arranges the vehicle shift bar, operational mode to vehicle is switched, and makes vehicle move under the snowfield pattern, and namely vehicle is with two retainings or three retaining startings, reduce power output, the light step on the accelerator of chaufeur prevents vehicle slip simultaneously, makes vehicle safety, slowly travels.
Because the above-mentioned switching to the vehicle operating pattern is identified the back manual switchover by the chaufeur oneself, therefore there is very big human element, there is deviation in the people to the judgement of road conditions, may cause chaufeur to forget that corresponding road conditions switch the pattern that vehicle travels, cause vehicle not to be in best operating condition, vehicle is caused damage, when serious, may damage the occupant.
In addition, the switching of existing vehicle operating pattern is by the form that button is set the vehicle operating pattern to be switched, and this mode need locate to add button at selector or instrument carrier panel etc., so just increased electric wiring, increased the incidence of mechanical breakdown and electrical accident, it is more complicated to operate simultaneously, the situation that has trouble in service, for example: when button malfunctioning, can't enter the snowfield pattern, can't switch to normal mode after perhaps entering the snowfield pattern, will cause and accelerate situation generation unable or that climb unable, increase the oil consumption of driving engine simultaneously.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of vehicle snowfield schema control system, can make vehicle according to different road conditions automatic switchover operational modes, guarantees that vehicle is in best running state, guarantees the safe in operation of vehicle simultaneously;
Another object of the present invention has provided the method that a kind of above-mentioned control system control vehicle switches to the snowfield pattern.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of vehicle snowfield schema control system comprises:
The rotating speed detection module is used for the rotary speed information of detection vehicle front and rear wheel in real time, and detected information is passed to main control unit in real time;
Das Gaspedal aperture detection module is used for the Das Gaspedal opening information of detection vehicle in real time, and detected information is passed to main control unit in real time;
Main control unit, vehicle front and rear wheel speed discrepancy value information when storage inside has vehicle to be in the snowfield operational mode, and Das Gaspedal aperture maxim, it receives rotating speed detection module and the detected information of Das Gaspedal aperture detection module in real time, and after detected information carried out related operation, the result that obtains and the information of its storage inside are compared, and the control vehicle motor moves with corresponding pattern.
As limitation of the invention:
Described main control unit is snowfield pattern control unit, and it links to each other with vehicle ECU information interaction;
Described rotating speed detection module is car speed sensor, and it is real-time transmitted to coupled vehicle ECU with detected vehicle front and rear wheel rotary speed information;
Described Das Gaspedal aperture detection module is accelerator pedal position sensor, and it is real-time transmitted to coupled snowfield pattern control unit with detected vehicle accelerator pedal position information.
As limitation of the invention further: be provided with the abs braking antiblock device between described car speed sensor and the vehicle ECU; Carrying out information interaction by the CAN bus between vehicle ECU and the vehicle transmit control unit is connected.
As further limiting of the present invention: the signal output part of described car speed sensor links to each other with the abs braking antiblock device by the CAN bus.
The present invention also provides a kind of method that vehicle enters the snowfield mode operation of controlling, and may further comprise the steps:
One, judges that the residing operation road conditions of vehicle are to enter step 2 after the snowfield road conditions;
Two, control vehicle automatic switchover snowfield operational mode is moved.
Restriction as said method: described step 1 may further comprise the steps:
(1) determines that the difference of rotating speed of vehicle front and rear wheel is more than or equal to the speed discrepancy threshold value of the vehicle of storing in main control unit vehicle front and rear wheel when the snowfield mode operation;
(2) determine that the Das Gaspedal aperture is the maxim of the Das Gaspedal aperture of storage in the main control unit.
As the further restriction to said method: described step (one) may further comprise the steps:
(11) rotating speed of detection vehicle front and rear wheel;
(12) main control unit calculates the rotating speed difference of vehicle front and rear wheel this moment;
The rotating speed difference of vehicle front and back wheel was compared when (13) main control unit was in the snowfield operational mode with the vehicle of the rotating speed difference of the vehicle front and rear wheel that calculates and its storage inside, and the output comparison result.
As the further restriction to said method: described step (11) detects the rotating speed of vehicle front and rear wheel in real time by the rotating speed detection module, and detected rotary speed information is real-time transmitted to main control unit.
Limit as the another kind to aforesaid way: described step (two) may further comprise the steps:
(21) detect vehicle Das Gaspedal opening information;
(22) maxim of the vehicle accelerator pedal aperture of the Das Gaspedal opening information of main control unit general vehicle this moment and its storage inside is compared, and the output comparison result.
As the further restriction to aforesaid way: detect the opening information of vehicle Das Gaspedal in the described step (21) by Das Gaspedal aperture detection module in real time, and detected information is real-time transmitted to main control unit.
Because adopt above technical scheme, the present invention compared with prior art can reach following technique effect:
(1) in the vehicle snowfield schema control system of the present invention button is not set, make electrical wiring simpler, communicate by the CAN bus with seasonal vehicle ECU and vehicle transmit control unit, utilize simple communication just can make the vehicle transmit control unit share the information that vehicle ECU gathers, need not again the signal output part of sensor is connected in the snowfield pattern control unit by circuit, make wiring simple more, convenient;
(2) main control unit of vehicle snowfield schema control system of the present invention is by before the detected vehicle, rear wheel rotation speed, and to vehicle accelerator pedal opening information, before can calculating vehicle this moment, the speed discrepancy of trailing wheel, and before judging vehicle this moment, when whether the rotating speed difference of trailing wheel reaches the snowfield operational mode of storage in the main control unit before the vehicle, the rotating speed difference of trailing wheel, whether the Das Gaspedal aperture that can judge simultaneously vehicle this moment reaches the maxim of the Das Gaspedal aperture of storage in the main control unit, as long as before the vehicle, when the rotating speed difference of trailing wheel reaches the snowfield operational mode of storage in the main control unit before the vehicle, the speed discrepancy threshold value of trailing wheel, when the Das Gaspedal aperture reaches the maxim of the Das Gaspedal aperture of storage in the main control unit simultaneously, main control unit will be controlled vehicle and automatically switch to the snowfield operational mode, need not the chaufeur active operation, order control is more accurate.
(3) the present invention controls the method that vehicle enters the snowfield mode operation and relies on vehicle snowfield schema control system of the present invention to realize having preceding two described beneficial effect equally
In sum, vehicle snowfield schema control system electrical wiring of the present invention is less, and principle is simple, can control simultaneously vehicle start or operational process in the operational mode that automaticallyes switch, control more accurate.
Vehicle snowfield schema control system of the present invention is applicable to various automatic catch vehicles.
Description of drawings
Fig. 1 is the functional block diagram of the embodiment of the invention;
Fig. 2 is that the embodiment of the invention is to the diagram of circuit of vehicle operating mode control method.
Among the figure: 1-rotating speed detection module, 2-Das Gaspedal aperture detection module, 3-main control unit, 4-driving engine.
The specific embodiment
Embodiment a kind of vehicle snowfield schema control system and corresponding control method
The structure of present embodiment comprises rotating speed detection module 1, Das Gaspedal aperture detection module 2 and main control unit as shown in Figure 1.Wherein:
Rotating speed detection module 1 is used for detecting in real time the rotary speed information of vehicle front and rear wheel, and for simple in structure, present embodiment directly adopts the car speed sensor that uses in the existing vehicle, front wheel rotation speed and the rear wheel rotation speed of its real-time inspection vehicle.
Das Gaspedal aperture detection module 2 is used for detecting in real time the Das Gaspedal opening information of vehicle, simple for structure, and present embodiment directly adopts the accelerator pedal position sensor that uses in the prior art vehicle, and detects the Das Gaspedal opening information in real time.
This example adopts snowfield pattern control unit as main control unit 3, because some information of vehicle are directly to be transferred to vehicle ECU's in existing vehicle ECU control system, therefore can be still less for wiring, present embodiment directly carries out information communication with vehicle ECU and vehicle transmit control unit by the CAN bus, vehicle transmission main control unit just can directly be shared the received information of vehicle ECU like this, for example before the detected vehicle of car speed sensor, the rotary speed information of trailing wheel at first passes to the abs braking antiblock device by rigid line exactly, before the abs braking antiblock device passes through the shared vehicle of CAN bus and ECU and snowfield pattern control unit with this signal then, the rotary speed information of trailing wheel.And the detected accelerator pedal position information of accelerator pedal position sensor is also shared to snowfield pattern control unit by the CAN bus after directly sending ECU to.
The control method that above-mentioned control system control vehicle enters the snowfield mode operation, as shown in Figure 2, at first system brings into operation, and enters following steps then:
(1) judge that the residing operation road conditions of vehicle are to enter step (2) after the snowfield road conditions, judge that wherein road conditions are that the snowfield road conditions mainly may further comprise the steps:
(11) determine that the difference of rotating speed of vehicle front and rear wheel is more than or equal to the difference of the vehicle of storing in main control unit vehicle front and rear wheel when the snowfield mode operation;
(12) determine that the Das Gaspedal aperture is the maxim of the Das Gaspedal aperture of storage in the main control unit.
When having only above-mentioned two conditions all to satisfy, main control unit 3 judges that just the road conditions of vehicle operating this moment are the snowfield road conditions, and wherein above-mentioned steps (11) is further comprising the steps of:
(111) rotating speed of detection vehicle front and rear wheel: the rotating speed detection module detects the rotating speed of vehicle front and rear wheel in real time, and detected rotary speed information is real-time transmitted to main control unit;
(112) main control unit calculates the rotating speed difference of vehicle front and rear wheel this moment;
The rotating speed difference of vehicle front and back wheel was compared when (113) main control unit was in the snowfield operational mode with the vehicle of the rotating speed difference of the vehicle front and rear wheel that calculates and its storage inside, and the output comparison result.
Above-mentioned steps (12) is further comprising the steps of:
(121) detect vehicle Das Gaspedal opening information: Das Gaspedal aperture detection module detects the opening information of vehicle Das Gaspedal in real time, and detected information is real-time transmitted to ECU;
(122) the main control unit maxim that receives the vehicle accelerator pedal aperture of the Das Gaspedal opening information of the vehicle that ECU shares and its storage inside is compared, and the output comparison result.
(2) control vehicle automatic switchover snowfield operational mode is moved.
Because before having only vehicle in the present embodiment, before the rotating speed difference of trailing wheel reaches the vehicle of storage in the main control unit 3, the rotating speed difference of trailing wheel, when the Das Gaspedal aperture reaches maxim simultaneously, main control unit 3 is just controlled driving engine 4 with the snowfield mode operation, therefore, no matter be vehicle just begun to start or process in vehicle operating in, as long as meet two above-mentioned conditions, main control unit 3 just can be made control, vehicle is automatically switched to the snowfield operational mode, need not the operation of the artificial intention of chaufeur, order control is more accurate, also can fully guarantee the safety of driving a vehicle.
Claims (10)
1. vehicle snowfield schema control system is characterized in that it comprises:
The rotating speed detection module is used for the rotary speed information of detection vehicle front and rear wheel in real time, and detected information is passed to main control unit in real time;
Das Gaspedal aperture detection module is used for the Das Gaspedal opening information of detection vehicle in real time, and detected information is passed to main control unit in real time;
Main control unit, vehicle front and rear wheel speed discrepancy threshold information when storage inside has vehicle to be in the snowfield operational mode, and Das Gaspedal aperture maxim, it receives rotating speed detection module and the detected information of Das Gaspedal aperture detection module in real time, and after detected information carried out related operation, the information of operation result and its storage inside is compared, and the control vehicle motor moves with corresponding pattern.
2. vehicle snowfield schema control system according to claim 1 is characterized in that:
Described main control unit is snowfield pattern control unit, and it links to each other with vehicle ECU information interaction;
Described rotating speed detection module is car speed sensor, and it is real-time transmitted to coupled vehicle ECU with detected vehicle front and rear wheel rotary speed information;
Described Das Gaspedal aperture detection module is accelerator pedal position sensor, and it is real-time transmitted to coupled snowfield pattern control unit with detected vehicle accelerator pedal position information.
3. vehicle snowfield schema control system according to claim 2 is characterized in that: be provided with the abs braking antiblock device between described car speed sensor and the vehicle ECU; Carrying out information interaction by the CAN bus between vehicle ECU and the vehicle transmit control unit is connected.
4. vehicle snowfield schema control system according to claim 3 is characterized in that: the signal output part of described car speed sensor links to each other with the abs braking antiblock device by the CAN bus.
5. control the control method that vehicle enters the snowfield mode operation for one kind, it is characterized in that it may further comprise the steps:
(1) judges that the residing operation road conditions of vehicle are to enter step (2) after the snowfield road conditions;
(2) control vehicle automatic switchover snowfield operational mode is moved.
6. the control vehicle according to claim 5 control method that enters the snowfield mode operation is characterized in that described step (1) may further comprise the steps:
(11) determine that the difference of rotating speed of vehicle front and rear wheel is more than or equal to the vehicle of storing in main control unit vehicle front and rear wheel speed discrepancy threshold value when the snowfield mode operation;
(12) determine that the Das Gaspedal aperture is the maxim of the Das Gaspedal aperture of storage in the main control unit.
7. the control vehicle according to claim 6 control method that enters the snowfield mode operation is characterized in that described step (11) may further comprise the steps:
(111) rotating speed of detection vehicle front and rear wheel;
(112) main control unit calculates the rotating speed difference of vehicle front and rear wheel this moment;
The rotating speed difference of vehicle front and back wheel was compared when (113) main control unit was in the snowfield operational mode with the vehicle of the rotating speed difference of the vehicle front and rear wheel that calculates and its storage inside, and the output comparison result.
8. the control vehicle according to claim 7 control method that enters the snowfield mode operation, it is characterized in that: described step (111) detects the rotating speed of vehicle front and rear wheel in real time by the rotating speed detection module, and detected rotary speed information is real-time transmitted to main control unit.
9. according to any control method that described control vehicle enters the snowfield mode operation in the claim 6-8, it is characterized in that described step (12) may further comprise the steps:
(121) detect vehicle Das Gaspedal opening information;
(122) maxim of the vehicle accelerator pedal aperture of the Das Gaspedal opening information of main control unit general vehicle this moment and its storage inside is compared, and the output comparison result.
10. the control vehicle according to claim 9 control method that enters the snowfield mode operation, it is characterized in that: detect the opening information of vehicle Das Gaspedal in the described step (121) by Das Gaspedal aperture detection module in real time, and detected information is real-time transmitted to main control unit.
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| CN201310154887.5A CN103192832B (en) | 2013-04-28 | 2013-04-28 | Vehicle snow schema control system and corresponding control method |
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| CN201310154887.5A CN103192832B (en) | 2013-04-28 | 2013-04-28 | Vehicle snow schema control system and corresponding control method |
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| CN103192832B CN103192832B (en) | 2016-10-05 |
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| CN103851179A (en) * | 2014-02-27 | 2014-06-11 | 长城汽车股份有限公司 | Vehicle as well as control method thereof and control device |
| CN105626849A (en) * | 2016-03-21 | 2016-06-01 | 重庆长安汽车股份有限公司 | Winter mode control method of automatic gearbox |
| CN107234984A (en) * | 2017-06-14 | 2017-10-10 | 江苏林海动力机械集团有限公司 | A kind of electric car four-wheel drive automatic switchover system |
| CN108944931A (en) * | 2017-05-25 | 2018-12-07 | 长城汽车股份有限公司 | Hill start assistance method and device under snow field mode |
| CN109080623A (en) * | 2017-06-13 | 2018-12-25 | 长城汽车股份有限公司 | The snowfield drive-control system of hybrid vehicle |
| CN109263643A (en) * | 2018-08-17 | 2019-01-25 | 上海汽车集团股份有限公司 | Vehicle snow orographic model automatic identifying method and device |
| CN110103985A (en) * | 2019-04-18 | 2019-08-09 | 浙江吉利控股集团有限公司 | A kind of control method and device of vehicle |
| WO2020156265A1 (en) * | 2019-01-29 | 2020-08-06 | 长城汽车股份有限公司 | All-terrain automatic control method and device for vehicle |
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| CN107234984B (en) * | 2017-06-14 | 2023-12-19 | 江苏林海动力机械集团有限公司 | Four-wheel drive automatic switching system of electric vehicle |
| CN109263643A (en) * | 2018-08-17 | 2019-01-25 | 上海汽车集团股份有限公司 | Vehicle snow orographic model automatic identifying method and device |
| WO2020156265A1 (en) * | 2019-01-29 | 2020-08-06 | 长城汽车股份有限公司 | All-terrain automatic control method and device for vehicle |
| CN110103985A (en) * | 2019-04-18 | 2019-08-09 | 浙江吉利控股集团有限公司 | A kind of control method and device of vehicle |
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