CN103832280A - Vehicle distance control system and method applied to vehicle - Google Patents
Vehicle distance control system and method applied to vehicle Download PDFInfo
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- CN103832280A CN103832280A CN201210475616.5A CN201210475616A CN103832280A CN 103832280 A CN103832280 A CN 103832280A CN 201210475616 A CN201210475616 A CN 201210475616A CN 103832280 A CN103832280 A CN 103832280A
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Abstract
The invention discloses a vehicle distance control system and method applied to a vehicle. The system comprises a vehicle speed sensor used for detecting the current vehicle speed, a first vehicle distance detecting device used for detecting the current vehicle distance between the vehicle and a vehicle ahead and a control device used for determining the critical safe vehicle distance range corresponding to the current speed according to the current speed and pre-stored critical safe vehicle distance ranges which correspond to multiple speeds and controlling a vehicle engine to slow down when the current vehicle distance is smaller than or equal to the upper limit of the critical safe vehicle distance range. The system can be used for controlling the engine to slow down to automatically control speed reduction of the vehicle and safety of vehicle running is improved.
Description
Technical field
The present invention relates to a kind of spacing control system and method for vehicle.
Background technology
Along with popularizing of automobile, all whiles easily that people bring at enjoyment automobile, also in the improvement of constantly pursuing automotive safety technology.Automotive safety technology mainly comprises two aspects, is active safety technology on the one hand, is passive security technology on the other hand.For preventing car has an accident, avoid personnel to come to harm and the safe design taked, be called active safety design.Automobile distance forewarn system is exactly a kind of active safety design.
For the vehicle travelling on expressway, the state of the speed of a motor vehicle, safety distance, chaufeur is the main hidden danger of car accedent, in running at high speed, how to guarantee the safety distance of car and car, car and obstacle, slowing down in time, stop and taking the measure of dodging is accordingly the effective measures that reduce traffic accident.The in the situation that of chaufeur driving tired out or Getting Started, more need a kind of ancillary system to carry out spacing early warning auxiliary car load Driving control.
Existing spacing forewarn system is a set of autonomous system, comprises range finding probe, host computer and buzzer phone.Range finding probe carries out spacing detection and related data is inputed to host computer, and computer is to data analysis, and in the time that spacing is less than default safe distance between vehicles, buzzer warning reminds chaufeur to carry out spacing control.This spacing prior-warning device can only play the effect of reminding this car chaufeur, and can not automatically adjust vehicle running state according to spacing situation at that time.
Summary of the invention
The object of this invention is to provide a kind of spacing control system and method, to can automatically adjust the speed of a motor vehicle according to spacing situation.
To achieve these goals, the invention provides a kind of spacing control system for vehicle, this system comprises: car speed sensor, for detection of current vehicle speed; The first spacing detecting device, for detection of the current spacing between described vehicle and front vehicles; And control setup, be used for according to described current vehicle speed and the pre-stored critical safety distance scope corresponding to the multiple speed of a motor vehicle, determine the critical safety distance scope corresponding with this current vehicle speed, and be less than or equal to described critical safety distance scope at described current spacing upper in limited time, control the engine retard of described vehicle.
To achieve these goals, the present invention also provides a kind of spacing control method for vehicle, and the method comprises: detect current vehicle speed by car speed sensor; Detect the current spacing between described vehicle and front vehicles by the first spacing detecting device; And control setup is according to described current vehicle speed and the pre-stored critical safety distance scope corresponding to the multiple speed of a motor vehicle, determine the critical safety distance scope corresponding with this current vehicle speed, and be less than or equal to described critical safety distance scope at described current spacing upper in limited time, control the engine retard of described vehicle.
Pass through technique scheme, control setup is according to the corresponding critical safety distance scope of spacing, this car current vehicle speed and current vehicle speed between vehicle, being less than or equal to the upper of critical safety distance scope at current spacing prescribes a time limit, control vehicle motor slows down, so avoid chaufeur to react not in time and the danger that may cause, thereby greatly increased the safety of Vehicle Driving Cycle.
Other features and advantages of the present invention are described in detail the specific embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with the specific embodiment one below.In the accompanying drawings:
Fig. 1 is according to the block diagram of the spacing control system for vehicle of the present invention; And
Fig. 2 is according to the schematic diagram of the relation between the speed of a motor vehicle of one embodiment of the present invention and early warning spacing, safe distance between vehicles and default spacing.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
Fig. 1 illustrates according to the block diagram of the spacing control system for vehicle of the present invention.This system comprises: vehicle speed detector device 101, and it can be fixedly mounted on change speed gear box, and for detection of current vehicle speed, this vehicle speed detector device 101 can be the known suitable element as hall effect type sensor; The first spacing detecting device 102, the front insurance that can be arranged on vehicle by fixed form is shouldered or other suitable location, for detection of the current spacing between Ben Che and front car amount; Control setup 100, is connected with vehicle speed detector device 101 and the first spacing detecting device 102, for slow down to reduce the speed of a motor vehicle by control engine.
In Vehicle Driving Cycle process, vehicle speed detector device 101 detects current vehicle speed, and is sent to control setup 100; The spacing that the first spacing detecting device 102 detects between this car and front vehicles, and be sent to control setup 100; The pre-stored critical safety distance scope corresponding to multiple speed of a motor vehicle in control setup 100, control setup 100 obtains current critical safety distance scope according to current vehicle speed, being greater than the upper of critical safety distance scope at current spacing prescribes a time limit, represent now in a safe condition between Ben Che and front vehicles, prescribe a time limit and be less than or equal to the upper of critical safety distance scope at current spacing, control setup 100 control engines slow down.
Preferably, the control setup 100 in system can carry out control engine deceleration by controlling throttle gate (not shown).What this throttle gate was fixing is arranged on engine air inlet tube.Being less than or equal to the upper of critical safety distance scope at the spacing between vehicle in front and front vehicles prescribes a time limit, the signal that stepping motor on throttle gate sends according to control setup 100 reduces the aperture of throttle gate valve block, thereby reduce the amount of air that enters driving engine so that engine retard, thereby make the spacing of Ben Che and front vehicles can return to the upper limit that is greater than critical safety distance scope, when returning to after the upper limit that is greater than critical safety distance scope, control setup 100 stops the above-mentioned control that throttle gate valve block aperture is reduced, vehicle performance reverts to the state of controlling according to driver intention.In addition, control setup 100 by control throttle gate with automatic retarding in, if brake pedal is operated to brake, the signal that pedal position sensor is operated regenerative braking pedal is to control setup 100, control setup 100 stops the above-mentioned control that throttle gate valve block aperture is reduced, and vehicle performance reverts to the state of controlling according to driver intention.
Preferably, this system can also comprise alarm lamp (not shown), it is arranged in this car driver's seat, being greater than the upper of critical safety distance scope at current spacing prescribes a time limit, control setup 100 is controlled the green light Chang Liang of alarm lamp, in the time that current spacing is within the scope of critical safety distance, control setup 100 is controlled the green light flicker of alarm lamp, prescribe a time limit and be less than or equal to the lower of critical safety distance scope at current spacing, control setup 100 is controlled the red light of alarm lamp and is lighted, and control buzzer warning simultaneously, preferably, buzzer phone and alarm lamp can be integrated on same parts.
Preferably, this system also comprises the second spacing detecting device 103, can be fixedly mounted on the rear bumper of vehicle, for detection of the spacing between Ben Che and front vehicle, and be sent to control setup 100, control setup 100 obtains current critical safety distance scope according to the current vehicle speed of this car, being less than or equal to the upper of critical safety distance scope at current spacing prescribes a time limit, green light is glittering to remind chaufeur, chaufeur can be cleared by modes such as lane changes, being less than or equal to the lower of critical safety distance scope at current spacing prescribes a time limit, red light is lighted to remind chaufeur to take corresponding measure, and control setup 100 is controlled brake lamp and is lighted, and control loudspeaker (can be arranged on the afterbody of this car) rearward vehicle ring remind.
Preferably, above-mentioned the first spacing detecting device 102 can be microwave sending and receiving apparatus.After the microwave that the first spacing detecting device 102 receives control setup 100 transmits, received signal amplitude is incident upon in space, in the time that signal runs into target, the portion of energy being reflected back is received by the first spacing detecting device 102 as echoed signal, the first spacing detecting device 102 is sent to control setup 100 by this echoed signal again, there are differences due to the frequency of echoed signal and between the frequency of the microwave signal of launching before, so control setup 100 can carry out mixing by echoed signal and reference signal, to obtain difference frequency signal, the frequency of difference frequency signal is directly proportional to the distance R between microwave sending and receiving apparatus and target, control setup 100 can be determined distance R by the frequency of measuring difference frequency signal, thereby obtain the spacing between this car and front vehicles.Similarly, the second spacing detecting device 103 can be also microwave sending and receiving apparatus, and can determine the spacing between this car and front vehicle according to said process equally.
Fig. 2 shows the relation between the speed of a motor vehicle and early warning spacing, safe distance between vehicles and default spacing.Stipulate according to " People's Republic of China's law on road traffic safety ": self-propelled vehicle is at running on expressway, and when the speed of a motor vehicle exceedes 100 kilometers per hour, safe distance between vehicles is more than 100 meters; The speed of a motor vehicle is during lower than 100 kilometers per hour, and minimum safe spacing must not be less than 50 meters.In system provided by the present invention, can be set to above-mentioned safe distance between vehicles by safety critical spacing, default spacing is set to the certain proportion (as 20%) that safe distance between vehicles adds safe distance between vehicles, and early warning spacing can be set to the certain proportion (as 10%) that safe distance between vehicles deducts safe distance between vehicles.Be less than or equal to the scope of presetting between spacing using being greater than early warning spacing as critical safety distance scope, it is the b region in Fig. 2, in this critical safety distance scope, be limited to default spacing, and lower limit early warning spacing, c region is the spacing scope that is less than or equal to early warning spacing, and a region is the spacing scope that is greater than default spacing.So at current spacing during in a region, control setup 100 is controlled the green light Chang Liang of alarm lamp, in the time that current spacing is in b region, control the green light flicker of alarm lamp, at current spacing during in c region, control the red light of alarm lamp and light, and be less than or equal to critical safety distance scope at current spacing upper in limited time, control setup 100 control engines slow down.It should be appreciated by those skilled in the art, it is one embodiment of the present invention that aforesaid way is set safe distance between vehicles, early warning spacing, default spacing and critical safety distance scope, those skilled in the art can also determine above-mentioned spacing by other means, as the maximum braking potential according to vehicle is set safe distance between vehicles, then according to this safe distance between vehicles, corresponding early warning spacing, default spacing and critical safety distance scope are set.
By spacing control system and the method for vehicle provided by the present invention, realize in dangerous situation and can slow down and reduce the speed of a motor vehicle by control engine, this car chaufeur is reminded simultaneously, and can remind rear car chaufeur, this level of integrated system is high, fast response time, practical, has greatly increased the safety of Vehicle Driving Cycle.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (12)
1. for a spacing control system for vehicle, this system comprises:
Car speed sensor, for detection of current vehicle speed;
The first spacing detecting device, for detection of the current spacing between described vehicle and front vehicles; And
Control setup, be used for according to described current vehicle speed and the pre-stored critical safety distance scope corresponding to the multiple speed of a motor vehicle, determine the critical safety distance scope corresponding with this current vehicle speed, and be less than or equal to described critical safety distance scope at described current spacing upper in limited time, control the engine retard of described vehicle.
2. system according to claim 1, wherein, this system also comprises:
Throttle gate, for controlling the suction quantity of described driving engine,
The aperture of the valve block of described control setup by controlling this throttle gate is controlled described engine retard.
3. system according to claim 2, wherein, described control setup is in the time receiving the signal that brake pedal is operated, and the aperture that stops the valve block by controlling described throttle gate is controlled described engine retard.
4. system according to claim 1, wherein, this system also comprises:
The second spacing detecting device, for detection of the current spacing between described vehicle and front vehicle,
Described control setup is also less than or equal to the upper of described critical safety distance scope for the current spacing between described vehicle and front vehicle prescribes a time limit, and controls brake lamp and lights, to remind front vehicle.
5. system according to claim 4, wherein, this system also comprises:
Loudspeaker,
Described control setup is also less than or equal to the upper of described critical safety distance scope for the current spacing between described vehicle and front vehicle prescribes a time limit, and controls rearward car alarming of described loudspeaker.
6. according to the system described in any one claim in claim 1-5, wherein, this system also comprises:
Alarm lamp, is positioned at this car driver's seat,
Described control setup, also in the time that described current spacing is within the scope of described critical safety distance, is controlled the green light flicker of alarm lamp, to remind this car chaufeur; Be less than or equal to the lower of described critical safety distance scope at described current spacing and prescribe a time limit, control the red light of alarm lamp and light, to remind this car chaufeur.
7. for a spacing control method for vehicle, the method comprises:
Detect current vehicle speed;
Detect the current spacing between described vehicle and front vehicles; And
According to described current vehicle speed and the pre-stored critical safety distance scope corresponding to the multiple speed of a motor vehicle, determine the critical safety distance scope corresponding with this current vehicle speed, and be less than or equal to described critical safety distance scope at described current spacing upper in limited time, control the engine retard of described vehicle.
8. method according to claim 7, wherein, controls described engine retard by the aperture of valve block of controlling throttle gate.
9. method according to claim 8, wherein, the method also comprises:
In the time receiving the signal that brake pedal is operated, the aperture that stops the valve block by controlling described throttle gate is controlled described engine retard.
10. method according to claim 7, wherein, the method also comprises:
Detect the current spacing between described vehicle and front vehicle,
Current spacing between described vehicle and front vehicle is less than or equal to the upper of described critical safety distance scope prescribes a time limit, and controls brake lamp and lights, to remind front vehicle.
11. methods according to claim 10, wherein, the method also comprises:
Current spacing between described vehicle and front vehicle is less than or equal to the upper of described critical safety distance scope prescribes a time limit, and controls rearward car alarming of loudspeaker.
12. according to the method described in any one claim in claim 7-11, and wherein, the method also comprises:
In the time that described current spacing is within the scope of described critical safety distance, control the green light flicker of alarm lamp, to remind this car chaufeur; Be less than or equal to the lower of described critical safety distance scope at described current spacing and prescribe a time limit, control the red light of alarm lamp and light, to remind this car chaufeur.
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| CN201210475616.5A CN103832280B (en) | 2012-11-21 | 2012-11-21 | A kind of spacing control system and method for vehicle |
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| CN201210475616.5A CN103832280B (en) | 2012-11-21 | 2012-11-21 | A kind of spacing control system and method for vehicle |
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| CN105270176A (en) * | 2015-10-29 | 2016-01-27 | 郑州宇通客车股份有限公司 | Safety distance keeping control method and safety distance keeping control system |
| WO2017124539A1 (en) * | 2016-01-24 | 2017-07-27 | 吴晓敏 | Information pushing method during determining of safe following distance and safe following distance system |
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| CN111497738A (en) * | 2020-04-28 | 2020-08-07 | 一汽奔腾轿车有限公司 | Vehicle reminding and warning system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105109406A (en) * | 2015-09-21 | 2015-12-02 | 上海碧虎网络科技有限公司 | Rear-end collision prevention image projection and display safety system and processing method thereof |
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| CN109677389A (en) * | 2018-12-26 | 2019-04-26 | 潍柴动力股份有限公司 | Brake fade detection method and device in a kind of cylinder |
| CN109677389B (en) * | 2018-12-26 | 2020-06-02 | 潍柴动力股份有限公司 | In-cylinder brake failure detection method and device |
| CN111497738A (en) * | 2020-04-28 | 2020-08-07 | 一汽奔腾轿车有限公司 | Vehicle reminding and warning system |
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Effective date of registration: 20180511 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing treasure Car Co., Ltd. Address before: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Patentee before: Beiqi Futian Automobile Co., Ltd. |
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Effective date of registration: 20191022 Address after: 102206, Beijing, Shahe, Changping District Town, Sha Yang Road, Lao Wan Village North Patentee after: Beiqi Futian Automobile Co., Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing treasure Car Co., Ltd. |