CN102114840A - Driving safety control device on road surface change - Google Patents
Driving safety control device on road surface change Download PDFInfo
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- CN102114840A CN102114840A CN2011100226216A CN201110022621A CN102114840A CN 102114840 A CN102114840 A CN 102114840A CN 2011100226216 A CN2011100226216 A CN 2011100226216A CN 201110022621 A CN201110022621 A CN 201110022621A CN 102114840 A CN102114840 A CN 102114840A
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Abstract
The invention provides a driving safety control device on road surface change, belonging to the technical field of car driving safety, and solving the problem that a driver can not make deceleration response timely in the existing car when the road surface condition suddenly becomes worse during driving. The driving safety control device on the road surface change comprises a vehicle speed sensor and a road surface level detection device connected with a car deceleration mechanism, wherein the detection device is used for detecting the attachment level of road surface, and can ensure the car speed to be in the safety speed range by the car deceleration mechanism. The driving safety control device has the advantage of being capable of causing a car to decelerate automatically when road surface attachment suddenly become worse according to the automatic control principle, so as to ensure that the car runs in the safe speed range. The system only needs to be added with a simple module on the basis of the existing car stability control system, has great benefit, is easy to implement, and has good market application prospect.
Description
Technical field
The invention belongs to the ride safety of automobile technical field, relate to a kind of traffic safety control setup that changes about the road surface.
Background technology
Coefficient of road adhesion is an adhesive ability and the ratio of wheel normal direction (direction vertical with the road surface) pressure.It can regard the coefficient of static friction between tire and the road surface as.This coefficient is big more, and available adhesive ability is just big more, and automobile just is not easy to skid more.The size of adhesion value depends primarily on ground-surface kind and dry condition, and and structure, tread contour and the moving velocity of tire relation is all arranged.In general, the adhesion value maximum of dry, good pitch or cement concrete road can reach 0.7～0.8, and car is not easy to skid, driving safety; And the adhesion value minimum of ice and snow road, the easiest skidding.
In the process of moving, the decorative pattern of motor tire, air pressure and load etc. all are unmodified generally speaking, the main still change of condition of road surface that therefore can cause coefficient of road adhesion to change, such as ground-surface degree of roughness and moist muddy degree variation etc.
High-speed car travels and needs fair running road surface to adhere to guarantee, the adhesion to road surface situation that causes owing to reasons such as weather worsens suddenly and happens occasionally in high speed traveling, and automobile tends to because drive that the driver can not in time react out of control.The orthodox car stabilitrak, as ABS, can not head it off.Therefore be necessary that when the adhesion to road surface situation worsens suddenly automobile stability control system can in time be made response, to guarantee vehicle safety travel.
Summary of the invention
The objective of the invention is situation, and proposed a kind ofly can when the adhesion to road surface situation worsens suddenly, in time reduce the speed of a motor vehicle, to guarantee the control setup of traffic safety at the sudden deterioration of existing condition of road surface in the existing vehicle traveling process.
Purpose of the present invention can realize by following technical proposal: a kind of traffic safety control setup that changes about the road surface, it is characterized in that, this traffic safety control setup comprises car speed sensor and the pavement grade detecting device that is connected with car deceleration mechanism, this detecting device is used to detect ground-surface and adheres to grade, and can guarantee that automobile speed is in the safe vehicle speed range by car deceleration mechanism.
The pavement grade detecting device detects condition of road surface in real time, and the road pavement situation is carried out classification, the road surface of each grade all has a safe maximum permissable speed, when automobile speed surpasses current ground-surface safe maximum permissable speed, reduce the speed of a motor vehicle by car deceleration mechanism, the automobile actual vehicle speed is positioned at below the current driving ground-surface safe maximum permissable speed, guarantees traffic safety.
In above-mentioned a kind of traffic safety control setup that changes about the road surface, described pavement grade detecting device comprises central process unit, memory device and the image acquisition device that is used to gather pavement image information, image acquisition device all is connected with central process unit with memory device, described central process unit to the pavement image information that is collected carry out spectral analysis and with memory device in the frequency spectrum data stored compare determining that current ground-surface adheres to grade, above-mentioned central process unit can send restriction signal to car deceleration mechanism when the speed of a motor vehicle surpasses current ground-surface safe maximum permissable speed.
Image acquisition device is gathered pavement image information in real time, supply with central process unit and carry out the spectral analysis of pavement image, the frequency spectrum data of storing in central process unit and the memory device compares, to determine that the current driving ground-surface adheres to grade, again automobile current vehicle speed and this grade ground-surface safe maximum permissable speed are compared, then be decelerated to below the safe maximum permissable speed if current vehicle speed surpasses safe maximum permissable speed, even otherwise then the explanation pavement state changes, but current vehicle speed still is in the safe vehicle speed range, needn't slow down.
In above-mentioned a kind of traffic safety control setup that changes about the road surface, described image acquisition device is a pick up camera.
In above-mentioned a kind of traffic safety control setup that changes about the road surface, described car deceleration mechanism comprises engine rotational speed control apparatus and brake equipment.After the ECU of engine rotational speed control apparatus and the ECU of brake equipment receive restriction signal, make automobile be reduced to a certain speed of a motor vehicle, to guarantee safety traffic.
Compared with prior art, this relies on Automatic Control Theory about the traffic safety control setup that the road surface changes, and can make the automobile automatic deceleration when adhesion to road surface worsens suddenly, to guarantee that automobile travels in the safety vehicle speed range.This system only needs to add simple module and gets final product in existing vehicle stability controlled system, benefit is huge, and is easy to implement, and market application foreground is good.
Description of drawings
The functional-block diagram that this traffic safety control setup that changes about the road surface of Fig. 1 is provided.
The specific embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As shown in Figure 1, this comprises car speed sensor, central process unit, pick up camera and memory device about the traffic safety control setup that the road surface changes, car speed sensor, pick up camera and memory device all are connected with central process unit, wherein pick up camera is used to gather pavement image information, store memory contains the various road surface frequency spectrum datas that adhere to grade, and car speed sensor is used to detect the automobile current vehicle speed.
After this driving safety control is started working, gather pavement image information in real time by pick up camera, supply with central process unit and carry out the spectral analysis of pavement image, and with memory device in the frequency spectrum data stored compare, to determine that the current driving ground-surface adheres to grade, again automobile current vehicle speed and this grade ground-surface safe maximum permissable speed are compared, then send restriction signal to the ECU of engine rotational speed control apparatus and the ECU of brake equipment if current vehicle speed surpasses safe maximum permissable speed, reduce the speed of a motor vehicle to safe maximum permissable speed; Otherwise, illustrate that then current vehicle speed still is in the safe vehicle speed range, needn't slow down.In the driving process,, can confirm in time also whether the speed of a motor vehicle surpasses safe maximum permissable speed, carries out automatic deceleration in case of necessity, has guaranteed traffic safety even sudden variation takes place pavement state.
Specific embodiment described herein only is that spirit of the present invention is made casehistory.The technical personnel of the technical field of the invention can be made various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (4)
1. traffic safety control setup that changes about the road surface, it is characterized in that, this traffic safety control setup comprises car speed sensor and the pavement grade detecting device that is connected with car deceleration mechanism, this detecting device is used to detect ground-surface and adheres to grade, and can guarantee that automobile speed is in the safe vehicle speed range by car deceleration mechanism.
2. a kind of traffic safety control setup that changes about the road surface according to claim 1, it is characterized in that, described pavement grade detecting device comprises central process unit, memory device and the image acquisition device that is used to gather pavement image information, image acquisition device all is connected with central process unit with memory device, described central process unit to the pavement image information that is collected carry out spectral analysis and with memory device in the frequency spectrum data stored compare determining that current ground-surface adheres to grade, above-mentioned central process unit can send restriction signal to car deceleration mechanism when the speed of a motor vehicle surpasses current ground-surface safe maximum permissable speed.
3. a kind of traffic safety control setup that changes about the road surface according to claim 2 is characterized in that described image acquisition device is a pick up camera.
4. according to claim 1 or 2 or 3 described a kind of traffic safety control setups that change about the road surface, it is characterized in that described car deceleration mechanism comprises engine rotational speed control apparatus and brake equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100226216A CN102114840A (en) | 2011-01-20 | 2011-01-20 | Driving safety control device on road surface change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100226216A CN102114840A (en) | 2011-01-20 | 2011-01-20 | Driving safety control device on road surface change |
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| CN102114840A true CN102114840A (en) | 2011-07-06 |
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| CN2011100226216A Pending CN102114840A (en) | 2011-01-20 | 2011-01-20 | Driving safety control device on road surface change |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144637A (en) * | 2013-03-04 | 2013-06-12 | 奇瑞汽车股份有限公司 | Test method and test device for vehicle tyre-road surface adhesion coefficient |
| CN105182839A (en) * | 2015-07-20 | 2015-12-23 | 柳州一健科技有限公司 | Method for controlling driving unit of self-propelled engineering machinery |
| CN109398363A (en) * | 2018-10-24 | 2019-03-01 | 珠海格力电器股份有限公司 | A kind of pavement grade determines method, apparatus, storage medium and automobile |
| CN110293972A (en) * | 2019-06-13 | 2019-10-01 | 重庆长安汽车股份有限公司 | A kind of determination method of the road surface attachment grade for braking distance compensation |
| CN110562257A (en) * | 2019-08-29 | 2019-12-13 | 北京梧桐车联科技有限责任公司 | information processing method and device, vehicle and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103144637A (en) * | 2013-03-04 | 2013-06-12 | 奇瑞汽车股份有限公司 | Test method and test device for vehicle tyre-road surface adhesion coefficient |
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| CN109398363A (en) * | 2018-10-24 | 2019-03-01 | 珠海格力电器股份有限公司 | A kind of pavement grade determines method, apparatus, storage medium and automobile |
| CN109398363B (en) * | 2018-10-24 | 2020-11-06 | 珠海格力电器股份有限公司 | Pavement grade determination method and device, storage medium and automobile |
| CN110293972A (en) * | 2019-06-13 | 2019-10-01 | 重庆长安汽车股份有限公司 | A kind of determination method of the road surface attachment grade for braking distance compensation |
| CN110562257A (en) * | 2019-08-29 | 2019-12-13 | 北京梧桐车联科技有限责任公司 | information processing method and device, vehicle and storage medium |
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Application publication date: 20110706 |