CN105620491A - Method for stopping vehicle downhill neutral sliding - Google Patents
Method for stopping vehicle downhill neutral sliding Download PDFInfo
- Publication number
- CN105620491A CN105620491A CN201610012729.XA CN201610012729A CN105620491A CN 105620491 A CN105620491 A CN 105620491A CN 201610012729 A CN201610012729 A CN 201610012729A CN 105620491 A CN105620491 A CN 105620491A
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- CN
- China
- Prior art keywords
- state
- vehicle
- neutral
- slides
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/143—Alarm means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
- B60W2510/101—Transmission neutral state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
- B60W2555/40—Altitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2556/00—Input parameters relating to data
- B60W2556/45—External transmission of data to or from the vehicle
- B60W2556/50—External transmission of data to or from the vehicle for navigation systems
Abstract
The invention relates to the field of driving safety, in particular to a method for stopping vehicle downhill neutral sliding. The method for stopping vehicle downhill neutral sliding, disclosed by the invention, detects a vehicle in real time to obtain a state of the vehicle; and the state includes a state A-a neutral state, a state B-altitude falling, and a state C-vehicle speed increased and higher than a set limit value v. Then, the method judges if the state of the vehicle is the state A or the state B and if the state lasting time exceeds a set limit value t; if so, the warning prompt and/or the brake device triggering are performed; if not, the method judges if the vehicle state is the state A or the state C and if the state lasting time exceeds a set limit value t; if so, the warning prompt and/or the brake device triggering are performed; and if not, the state of the vehicle is continuously detected. The method can prevent the vehicle downhill neutral sliding, so that the generation of dangers is prevented, the driving safety is improved, the method is simple and feasible, and the cost is low.
Description
Technical field
The invention belongs to traffic safety field, more particularly to a kind of method stoping vehicle descending neutral gear to slide.
Background technology
Development along with society, the raising of people's living standard, increasing people has automobile, and increasing of automobile quantity also leads to vehicle accident and increases, very big injury and loss is all brought to family and society, and the generation of major part vehicle accident is all owing to driver's bad steering behavior causes, such as overload, hypervelocity, frequent lane change, fatigue driving and neutral gear slide.
Wherein, neutral gear slides has bigger harm, first, during automobile neutral position sliding, owing to engine stop operates, so air compressor does not work, and automobile needs often braking, the compression air in air tank constantly reduces, thus neutral position sliding to be likely to cause automobile brake malfunctioning; Secondly, it is easily damaged variator, owing to adopting rolling bearing in variator in a large number, although transmission main shaft rotates during neutral position sliding, but constant mesh gear does not rotate, therefore these gears cannot stir the gear oil in variator, bearing (particularly position higher, by the bearing of splashing lubrication) can not get proper lubrication, so premature abrasion can be there is in bearing and gear.
For this, during descending, neutral position sliding has been identified as being serious bad steering behavior, it it is the major reason of descending accident generation, but still have part driver safety consciousness weaker, in order to economize oil consumption, adopt neutral position sliding mode when descending, and generally this class behavior can only lean on driver self specification, there is relatively low restraining forces, so needing this behavior to be detected automatically and stops, to reduce the generation of accident.
Summary of the invention
Present invention aim at providing a kind of for solving the problems referred to above and can slide and carry out the method stoping vehicle descending neutral gear to slide that brake stops by automatic decision descending neutral gear.
For this, the invention discloses a kind of method stoping vehicle descending neutral gear to slide, comprise the steps:
S10, detects in real time to vehicle, and to obtain vehicle state in which, described state includes state A, is in neutral state; State B, height above sea level is declining; State C, speed is increasing and more than setting limit value v, is entering step S20;
S20, it is judged that whether vehicle-state is state A and state B and state duration exceedes setting limit value t, if it is, enter step S30; If it is not, then judge that whether vehicle-state is state A and state C and state duration exceedes setting limit value t, if it is, enter step S30; If it is not, then return step S10;
S30, carries out alarm and/or triggers brake gear.
Further, in described step S10, described neutral state includes gear and is in neutral gear or clutch is operated.
Further, the detection of described vehicle neutral state is to detect by installing sensor additional in relevant position.
Further, the detection of described vehicle neutral state is by obtaining gear or clutch or engine speed from vehicle CAN bus and output shaft rotary speed parameter detects.
Further, in described step S10, speed in the detection method increased is: speed is sampled according to setting the sampling time, then compares the size of former and later two sampled values, if sampled value below is more than sampled value above, then it is judged as that speed is increasing.
Further, described speed Negotiation speed sensor is obtained or is obtained by vehicle CAN bus.
Further, in described step S10, height above sea level in the detection method declined is: height above sea level is sampled according to setting the sampling time, then compares the size of former and later two sampled values, if sampled value below is less than sampled value above, then it is judged as that height above sea level is declining.
Further, described height above sea level is obtained by the elevation information of global positioning system or Beidou satellite navigation system.
Further, in described step S30, alarm adopts voice broadcast to report to the police.
The Advantageous Effects of the present invention:
The present invention can stop the bad steering behavior of neutral position sliding during descending, participates in brake by elevation information and judges, the situation of neutral position sliding occurs, reduce the generation of dangerous situation during refusal descending. Simultaneously for most of vehicles, except elevation information is by GPS information or Beidou satellite navigation acquisition of information, other information, as speed, clutch, gear etc. can directly obtain bus, simple, it is not necessary to vehicle is reequiped, cost is low.
Accompanying drawing explanation
Fig. 1 is the flow chart of the embodiment of the present invention.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the present invention is further described.
As it is shown in figure 1, a kind of method stoping vehicle descending neutral gear to slide, comprise the steps:
S10, detects in real time to vehicle, and to obtain vehicle state in which, described state includes state A, is in neutral state; State B, height above sea level is declining; State C, speed is increasing and more than setting limit value v, is entering step S20.
Concrete, vehicle neutral state includes gear and is in neutral gear or clutch is operated, detection gear being in neutral state can be realized from acquisition gear information CAN by J1939 agreement, can not directly obtain for gear information, then obtain engine speed and output shaft rotating speed, then the rotating ratio of engine speed and output shaft rotating speed is calculated, and rotating ratio interval corresponding to the neutral position that compares different vehicle draws whether be in neutral position, thus without vehicle is transformed, simple, and in neutral position, sensor can not can be installed from the vehicle of acquisition engine speed in CAN and output shaft rotating speed for some and detect, sensor can be switching regulator neutral position sensor or electromagnetic type neutral position sensor.
Height above sea level residing for vehicle in the detection method declined is: height above sea level is sampled according to setting the sampling time, then compares the size of former and later two sampled values, if sampled value below is less than sampled value above, is then judged as that height above sea level is declining. Concrete, the sampling of height above sea level can obtain GPS elevation information or Beidou satellite navigation elevation information by installation GPS communication module or Beidou satellite navigation communication module in vehicle and realize through processing calculating.
Speed in the detection method increased is: speed is sampled according to setting the sampling time, then compares the size of former and later two sampled values, if sampled value below is more than sampled value above, is then judged as that speed is increasing. Concrete, the sampling of speed then can be realized CAN by J1939 agreement, thus without vehicle is transformed, simple, then can not realize by installation rate sensor on vehicle from the vehicle obtaining speed CAN for some.
S20, it is judged that whether vehicle-state is state A and state B and state duration exceedes setting limit value t, if it is, enter step S30; If it is not, then judge that whether vehicle-state is state A and state C and the state order time exceedes setting limit value t, if it is, enter step S30; If it is not, then return step S10.
Concrete, when the ratio of slope is steeper, the height above sea level suppression ratio of vehicle is more apparent, can be detected by GPS elevation information or Beidou satellite navigation elevation information and draw, therefore can judge whether vehicle is in descending by GPS elevation information or Beidou satellite navigation elevation information, fairly simple quickly, and during abrupt slope, vehicle acceleration is big, so without setting speed limit value, as long as detecting that abrupt slope neutral gear slides to be necessary for stoping, otherwise may brake too late, producing danger.
And for downward grades only small in the case of under (as seeming level road), the height above sea level of vehicle declines inconspicuous, GPS elevation information cannot be passed through or Beidou satellite navigation elevation information can detect and draw, be necessary for by judging that whether speed is increasing, and judges whether to be in descending.
Velocity constraint v and time limit value t can be configured according to usual driving experience, and velocity constraint v refers to the velocity amplitude being likely to result in danger, and only reaching this limit value just has the necessity carrying out stoping; Being disposed to of time limit value t preventing from the of short duration process of gearshift (neutral necessarily occurs in gearshift) to occur in that stoping by mistake.
Local time vehicle is in without gps signal or Beidou satellite navigation signal, as being in tunnel, then judge that whether speed is increasing, and judges whether to be in descending by car.
S30, carries out alarm and/or triggers brake gear.
Concrete, when detect vehicle be in descending neutral gear slide time, carry out voice broadcast and driver reminded and warns, it is of course also possible to pass to remote terminal by radio communication, to be monitored. Simultaneously, it is possible to trigger brake gear, vehicle is carried out self-actuating brake, stop the bad steering behavior that driver's descending neutral gear slides, it is prevented that produce danger, it is provided that traffic safety.
For major part vehicle, engine speed, output shaft rotating speed, speed and clutch can obtain CAN according to J1939 agreement, the device that vehicle descending neutral gear slides then is stoped to have only to processing unit, voice broadcast unit and dead-man's device just can realize, processing unit can be single-chip microcomputer or MCU microprocessor, it obtains gear or output shaft rotating speed and engine speed CAN, speed and clutch, pass through computing, judge whether vehicle is in descending neutral gear and slides, if, then output signal to voice broadcast unit and carry out voice broadcast prompting and warning, simultaneously, output information triggers dead-man's device and brakes, stop the bad steering behavior that driver's descending neutral gear slides, prevent danger, traffic safety is provided. apparatus structure is simple, and cost is low, and easy to use, improves travel safety.
Although specifically showing in conjunction with preferred embodiment and describing the present invention; but those skilled in the art should be understood that; in the spirit and scope without departing from appended claims invention defined; the present invention can be made a variety of changes in the form and details, be protection scope of the present invention.
Claims (9)
1. one kind stops the method that vehicle descending neutral gear slides, it is characterised in that: comprise the steps
S10, detects in real time to vehicle, and to obtain vehicle state in which, described state includes state A, is in neutral state; State B, height above sea level is declining; State C, speed is increasing and more than setting limit value v, is entering step S20;
S20, it is judged that whether vehicle-state is state A and state B and state duration exceedes setting limit value t, if it is, enter step S30; If it is not, then judge that whether vehicle-state is state A and state C and state duration exceedes setting limit value t, if it is, enter step S30; If it is not, then return step S10;
S30, carries out alarm and/or triggers brake gear.
2. the method that prevention vehicle descending neutral gear according to claim 1 slides, it is characterised in that: in described step S10, described neutral state includes gear and is in neutral gear or clutch is operated.
3. the method that prevention vehicle descending neutral gear according to claim 2 slides, it is characterised in that: the detection of described vehicle neutral state is to detect by installing sensor additional in relevant position.
4. the method that prevention vehicle descending neutral gear according to claim 2 slides, it is characterised in that: the detection of described vehicle neutral state is by obtaining gear or clutch or engine speed from vehicle CAN bus and output shaft rotary speed parameter detects.
5. the method that prevention vehicle descending neutral gear according to claim 1 slides, it is characterized in that: in described step S10, speed in the detection method increased is: speed is sampled according to setting the sampling time, then the size of former and later two sampled values is compared, if sampled value below is more than sampled value above, then it is judged as that speed is increasing.
6. the method that prevention vehicle descending neutral gear according to claim 5 slides, it is characterised in that: described speed Negotiation speed sensor is obtained or is obtained by vehicle CAN bus.
7. the method that prevention vehicle descending neutral gear according to claim 1 slides, it is characterized in that: in described step S10, height above sea level in the detection method declined is: height above sea level is sampled according to setting the sampling time, then the size of former and later two sampled values is compared, if sampled value below is less than sampled value above, then it is judged as that height above sea level is declining.
8. the method that prevention vehicle descending neutral gear according to claim 7 slides, it is characterised in that: described height above sea level is obtained by the elevation information of global positioning system or Beidou satellite navigation system.
9. the method that prevention vehicle descending neutral gear according to claim 1 slides, it is characterised in that: in described step S30, alarm adopts voice broadcast to report to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012729.XA CN105620491A (en) | 2016-01-08 | 2016-01-08 | Method for stopping vehicle downhill neutral sliding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012729.XA CN105620491A (en) | 2016-01-08 | 2016-01-08 | Method for stopping vehicle downhill neutral sliding |
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| Publication Number | Publication Date |
|---|---|
| CN105620491A true CN105620491A (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610012729.XA Pending CN105620491A (en) | 2016-01-08 | 2016-01-08 | Method for stopping vehicle downhill neutral sliding |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108099914A (en) * | 2016-11-25 | 2018-06-01 | 现代自动车株式会社 | For controlling the apparatus and method of the stopping of vehicle |
| CN109693608A (en) * | 2017-10-23 | 2019-04-30 | 博世汽车部件(苏州)有限公司 | Method, apparatus and equipment for early warning |
| CN110118659A (en) * | 2018-02-05 | 2019-08-13 | 厦门雅迅网络股份有限公司 | The detection method and car-mounted terminal of descending neutral position sliding |
| CN112478040A (en) * | 2020-12-09 | 2021-03-12 | 湖南喜宝达信息科技有限公司 | Downhill speed limiting method for electric bicycle, and computer-readable storage medium |
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| CN203111031U (en) * | 2012-12-27 | 2013-08-07 | 长安大学 | Alarm device used for preventing car from sliding in neutral position during downhill |
| CN203832341U (en) * | 2013-10-22 | 2014-09-17 | 北京汽车股份有限公司 | Neutral-gear sliding warning device and automobile |
| CN205292628U (en) * | 2015-12-23 | 2016-06-08 | 郑州贯沣电子科技有限公司 | Monitoring devices is slideed to heavy vehicle's neutral |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010060010A (en) * | 2008-09-02 | 2010-03-18 | Jatco Ltd | Control device for automatic transmission |
| CN102563038A (en) * | 2011-12-31 | 2012-07-11 | 重庆长安汽车股份有限公司 | Neutral position control method for automatic transmission |
| CN202923398U (en) * | 2012-10-31 | 2013-05-08 | 长安大学 | Downslope speed control device for automobile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108099914A (en) * | 2016-11-25 | 2018-06-01 | 现代自动车株式会社 | For controlling the apparatus and method of the stopping of vehicle |
| CN109693608A (en) * | 2017-10-23 | 2019-04-30 | 博世汽车部件(苏州)有限公司 | Method, apparatus and equipment for early warning |
| CN110118659A (en) * | 2018-02-05 | 2019-08-13 | 厦门雅迅网络股份有限公司 | The detection method and car-mounted terminal of descending neutral position sliding |
| CN112478040A (en) * | 2020-12-09 | 2021-03-12 | 湖南喜宝达信息科技有限公司 | Downhill speed limiting method for electric bicycle, and computer-readable storage medium |
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