CN103640521B - A kind of automobile distance keeps the distance-finding method of warning device - Google Patents
A kind of automobile distance keeps the distance-finding method of warning device Download PDFInfo
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- CN103640521B CN103640521B CN201310675154.6A CN201310675154A CN103640521B CN 103640521 B CN103640521 B CN 103640521B CN 201310675154 A CN201310675154 A CN 201310675154A CN 103640521 B CN103640521 B CN 103640521B
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Abstract
Automobile distance keeps a distance-finding method for warning device, comprising: start this automobile; Static spacing initial value and Dynamic Vehicle are set apart from initial value; Detect this automobile speed; Measure distance, and identify the first car plate of extraneous vehicle; By spacing and the comparison of static spacing initial value; If be greater than static spacing initial value, again detect this automobile speed, if be less than static spacing initial value, report to the police; Measure distance, and identifier is identified the second car plate of extraneous vehicle; The first car plate and the second car plate are compared; If identical, calculate dynamic security spacing, if not identical, again detect this automobile speed; Relatively dynamic security spacing and Dynamic Vehicle are apart from initial value; If be greater than Dynamic Vehicle apart from initial value, again detect the speed of a motor vehicle; If be less than Dynamic Vehicle apart from initial value, alarm. The relative velocity between the spacing between two cars and two cars is combined in the present invention, thus make that described automobile distance warning device warning is stronger, range finding more accurately, more intelligent.
Description
Technical field
The present invention relates to technical field of automotive electronics, relate in particular to the survey that a kind of automobile distance keeps warning deviceApart from method.
Background technology
In road traffic accident, mainly because rear-end collision causes, city back warp is normal occurs that two cars knock into the back, andOn expressway, more easily there is the chain of rings phenomenon that knocks into the back. According to U.S. whole nation turnpike driving safety management committee memberCan add up, 79% rear-end collision accident is because human pilot dispersion attention causes, as long as in advance partlyRemind second to human pilot, just the incidence of rear-end collision can reduce 60%, if human pilot can be done sth. in advanceWithin 1～2 second, recognize and have accident hazard and take corresponding correct measure, the traffic accident that is mostly absolutely canTo avoid.
For above-mentioned phenomenon, a kind of remote ranging technology arises at the historic moment. Described remote ranging technology canWith the distance between Real-Time Monitoring vehicle, in the time that described distance is less than risk distance, just can remind driverMember notes operation, avoids knocking into the back. But existing remote ranging technology is between only can monitor vehicleDistance, and the actual range between vehicle cannot be associated with the relative velocity of described vehicle. But,Total institute is known, and the relative velocity of vehicle is but closely related with the safe distance of two cars.
Therefore the problem existing for prior art, this case designer relies on the industry experience for many years of being engaged in,Active research improvement, so there has been a kind of automobile distance of the present invention to keep the distance-finding method of warning device.
Summary of the invention
The present invention be directed in prior art, described traditional automobile distance warning device cannot be by between vehicleActual range be associated with the relative velocity of described vehicle, cause the defects such as alarming effect is not good enough to provide onePlant the distance-finding method of automobile distance maintenance warning device.
For realizing the present invention's object, the invention provides the distance-finding method that a kind of automobile distance keeps warning device,Described automobile distance keeps the distance-finding method of warning device to comprise:
Execution step S1: start this automobile;
Execution step S2: static spacing initial value and Dynamic Vehicle are set apart from initial value;
Execution step S3: detect this automobile speed;
Execution step S4: measure the distance between this automobile and extraneous vehicle by described remote rangefinder,And identify the first car plate of extraneous vehicle by described remote image identifier;
Execution step S5: by the spacing between described extraneous vehicle and described the automobile with the first car plateCompare with described static spacing initial value;
Execution step S51: if described in there is the spacing between extraneous vehicle and described the automobile of the first car plateBe greater than described static spacing initial value, again detect this automobile speed; If described in have the first car plate outsideSpacing between boundary's vehicle and described automobile is less than described static spacing initial value, described safe distance between vehicles reportAlarm system gives the alarm;
Execution step S52: again detect after this automobile speed, measure this vapour by described remote rangefinderDistance between car and extraneous vehicle, and identify of extraneous vehicle by described remote image identifierTwo car plates;
Execution step S53: the first car plate of described extraneous vehicle and the second car plate are compared;
Execution step S54: if the first car plate of described extraneous vehicle is identical with the second car plate, described in passing throughDynamic security spacing computing system calculates dynamic security spacing; If the first car plate of described extraneous vehicle andTwo car plates are not identical, perform step S3～S53;
Execution step S55: will calculate the described dynamic peace obtaining by described dynamic security spacing computing systemFull spacing and described Dynamic Vehicle compare apart from initial value;
Execution step S56: if described dynamic security spacing is greater than described Dynamic Vehicle apart from initial value, again detectDescribed automobile speed, and circulation execution step S52～S56; If described in described dynamic security spacing is less thanDynamic Vehicle is apart from initial value, and described safe distance between vehicles warning system gives the alarm.
Alternatively, described static spacing initial value and Dynamic Vehicle apart from initial value all according to the speed of a motor vehicle of this automobile and brakingSituation arranges.
In sum, the present invention by remote rangefinder obtain described automobile and described extraneous vehicle itBetween distance, and obtain the car plate of extraneous vehicle by described remote image identifier, described in obtainingDynamic security spacing between this automobile and described extraneous vehicle, between the spacing between two cars and two carsRelative velocity combination, thereby make that described automobile distance warning device warning is stronger, range finding more accurately,More intelligent.
Brief description of the drawings
Figure 1 shows that automobile distance of the present invention keeps the flow chart of the distance-finding method of warning device.
Detailed description of the invention
By describe in detail the invention technology contents, structural feature, reached object and effect, underFace is in connection with embodiment and coordinate accompanying drawing to be described in detail.
Refer to Fig. 1, Figure 1 shows that automobile distance of the present invention keeps the flow chart of the distance-finding method of warning device.Described automobile distance keeps the distance-finding method of warning device, comprising:
Execution step S1: start this automobile;
Execution step S2: according to the speed of a motor vehicle of this automobile and braking situation, static spacing initial value and dynamic is setSpacing initial value;
Execution step S3: detect this automobile speed;
Execution step S4: measure the distance between this automobile and extraneous vehicle by described remote rangefinder,And identify the first car plate of extraneous vehicle by described remote image identifier;
Execution step S5: by the spacing between described extraneous vehicle and described the automobile with the first car plateCompare with described static spacing initial value;
Execution step S51: if described in there is the spacing between extraneous vehicle and described the automobile of the first car plateBe greater than described static spacing initial value, again detect this automobile speed; If described in have the first car plate outsideSpacing between boundary's vehicle and described automobile is less than described static spacing initial value, described safe distance between vehicles reportAlarm system gives the alarm;
Execution step S52: again detect after this automobile speed, measure this vapour by described remote rangefinderDistance between car and extraneous vehicle, and identify of extraneous vehicle by described remote image identifierTwo car plates;
Execution step S53: the first car plate of described extraneous vehicle and the second car plate are compared;
Execution step S54: if the first car plate of described extraneous vehicle is identical with the second car plate, described in passing throughDynamic security spacing computing system calculates dynamic security spacing; If the first car plate of described extraneous vehicle andTwo car plates are not identical, perform step S3～S53;
Execution step S55: will calculate the described dynamic peace obtaining by described dynamic security spacing computing systemFull spacing and described Dynamic Vehicle compare apart from initial value;
Execution step S56: if described dynamic security spacing is greater than described Dynamic Vehicle apart from initial value, again detectDescribed automobile speed, and circulation execution step S52～S56; If described in described dynamic security spacing is less thanDynamic Vehicle is apart from initial value, and described safe distance between vehicles warning system gives the alarm.
In sum, the present invention by remote rangefinder obtain described automobile and described extraneous vehicle itBetween distance, and obtain the car plate of extraneous vehicle by described remote image identifier, described in obtainingDynamic security spacing between this automobile and described extraneous vehicle, between the spacing between two cars and two carsRelative velocity combination, thereby make that described automobile distance warning device warning is stronger, range finding more accurately,More intelligent.
Those skilled in the art all should be appreciated that, in the situation that not departing from the spirit or scope of the present invention, and canThe present invention is carried out to various modifications and variations. Thereby, if falling into appended right, any amendment or modification wantWhile asking in the protection domain of book and equivalent, think that the present invention contains these amendments and modification.
Claims (2)
1. automobile distance keeps a distance-finding method for warning device, it is characterized in that, described automobile distance is protectedThe distance-finding method of holding warning device comprises:
Execution step S1: start this automobile;
Execution step S2: static spacing initial value and Dynamic Vehicle are set apart from initial value;
Execution step S3: detect this automobile speed;
Execution step S4: measure the distance between this automobile and extraneous vehicle by remote rangefinder, andIdentify the first car plate of extraneous vehicle by remote image identifier;
Execution step S5: by the spacing between described extraneous vehicle and described the automobile with the first car plateCompare with described static spacing initial value;
Execution step S51: if described in there is the spacing between extraneous vehicle and described the automobile of the first car plateBe greater than described static spacing initial value, again detect this automobile speed; If described in have the first car plate outsideSpacing between boundary's vehicle and described automobile is less than described static spacing initial value, and safe distance between vehicles is reported to the police and isSystem gives the alarm;
Execution step S52: again detect after this automobile speed, measure this vapour by described remote rangefinderDistance between car and extraneous vehicle, and identify of extraneous vehicle by described remote image identifierTwo car plates;
Execution step S53: the first car plate of described extraneous vehicle and the second car plate are compared;
Execution step S54: if the first car plate of described extraneous vehicle is identical with the second car plate, described in passing throughDynamic security spacing computing system calculates dynamic security spacing; If the first car plate of described extraneous vehicle andTwo car plates are not identical, perform step S3～S53;
Execution step S55: will calculate the described dynamic peace obtaining by described dynamic security spacing computing systemFull spacing and described Dynamic Vehicle compare apart from initial value;
Execution step S56: if described dynamic security spacing is greater than described Dynamic Vehicle apart from initial value, again detectDescribed automobile speed, and circulation execution step S52～S56; If described in described dynamic security spacing is less thanDynamic Vehicle is apart from initial value, and described safe distance between vehicles warning system gives the alarm.
2. automobile distance as claimed in claim 1 keeps the distance-finding method of warning device, it is characterized in that,Described static spacing initial value and Dynamic Vehicle all arrange according to the speed of a motor vehicle of this automobile and braking situation apart from initial value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310675154.6A CN103640521B (en) | 2013-12-11 | 2013-12-11 | A kind of automobile distance keeps the distance-finding method of warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310675154.6A CN103640521B (en) | 2013-12-11 | 2013-12-11 | A kind of automobile distance keeps the distance-finding method of warning device |
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| Publication Number | Publication Date |
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| CN103640521A CN103640521A (en) | 2014-03-19 |
| CN103640521B true CN103640521B (en) | 2016-05-11 |
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| CN201310675154.6A Expired - Fee Related CN103640521B (en) | 2013-12-11 | 2013-12-11 | A kind of automobile distance keeps the distance-finding method of warning device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106611511A (en) * | 2015-10-21 | 2017-05-03 | 中兴通讯股份有限公司 | Vehicle distance alarm method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0696398A (en) * | 1992-09-17 | 1994-04-08 | Fujitsu Ten Ltd | Vehicle distance warning device |
| CN1963389A (en) * | 2006-12-08 | 2007-05-16 | 杨楠 | Method for measuring distance between cars and telemeter |
| CN101135558A (en) * | 2007-09-28 | 2008-03-05 | 深圳先进技术研究院 | Vehicle anti-collision early warning method and apparatus based on machine vision |
| CN101294801A (en) * | 2007-07-13 | 2008-10-29 | 东南大学 | Vehicle distance measuring method based on binocular vision |
| CN101337536A (en) * | 2008-08-11 | 2009-01-07 | 北京中星微电子有限公司 | Vehicle device and method for determining vehicle-distance |
| CN101726280A (en) * | 2008-10-22 | 2010-06-09 | 华晶科技股份有限公司 | Vehicle distance detecting method and system thereof |
-
2013
- 2013-12-11 CN CN201310675154.6A patent/CN103640521B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0696398A (en) * | 1992-09-17 | 1994-04-08 | Fujitsu Ten Ltd | Vehicle distance warning device |
| CN1963389A (en) * | 2006-12-08 | 2007-05-16 | 杨楠 | Method for measuring distance between cars and telemeter |
| CN101294801A (en) * | 2007-07-13 | 2008-10-29 | 东南大学 | Vehicle distance measuring method based on binocular vision |
| CN101135558A (en) * | 2007-09-28 | 2008-03-05 | 深圳先进技术研究院 | Vehicle anti-collision early warning method and apparatus based on machine vision |
| CN101337536A (en) * | 2008-08-11 | 2009-01-07 | 北京中星微电子有限公司 | Vehicle device and method for determining vehicle-distance |
| CN101726280A (en) * | 2008-10-22 | 2010-06-09 | 华晶科技股份有限公司 | Vehicle distance detecting method and system thereof |
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| CN103640521A (en) | 2014-03-19 |
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