CN103956067A - System and method for preventing traffic accidents caused by overspeed of key transportation vehicles - Google Patents
System and method for preventing traffic accidents caused by overspeed of key transportation vehicles Download PDFInfo
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Abstract
Provided are a system and method for preventing traffic accidents caused by the overspeed of key transportation vehicles. The system comprises an image collecting unit, an image processing unit, a road segment speed limit value storage unit, a speed collecting unit and an overspeed prompting and alarming unit. Signs arranged on road sides are collected, and speed limit signs and road segment speed limit values are extracted; after the vehicles pass through the speed limit signs, the road segment speed limit values are regarded as the current speed limit values of the vehicles, and then the running speed of the vehicles is obtained in real time; after the running speed of the vehicles exceeds the speed limit values, alarming and prompting are conducted. According to the scheme, the speed limit information can change along with the changes of the speed limit signs in road signs, drivers drive the vehicles with the speed limit signs as speed limit bases, and the problem of overspeed error judgment caused by the update lag of the limit speed in the prior art is effectively solved. In the scheme, the speed limit sign information is obtained in real time to be taken as the speed limit bases, the problems of lag and error judgment are solved, and the real-time performance and the accuracy of speed limit monitoring are greatly improved.
Description
Technical field
The present invention relates to a kind of vehicles overspeed alarm system, specifically a kind of illegal hypervelocity automatic-prompting warning system and method for emphasis transportation.
Background technology
Along with the fast development of Road Transportation cause, road transport is day by day busy.In order to prevent and to reduce road traffic accident, vehicle supervision department can be according to the speed designs requirement in section, in different sections, be provided with different speed(-)limit signs, alerting drivers can not surpass speed limit in the process of moving, to prevent and to reduce because of the traffic hazard that causes of hypervelocity.China's law on road traffic safety regulation: the automobile driving speed of highway the soonest must not be over 120 kilometers, while having speed limit road traffic sign or speed limit face sign, should travel in strict accordance with the speed of sign regulation, over this section restriction speed, travelling is exactly to drive over the speed limit.The method of the overspeed of vehicle monitoring at present equipment that employing arranges radar, laser, ground induction coil, video isotype at the section that needs the part section of speed limit is mostly monitored the vehicle of illegal hypervelocity, but this method is limited to the riding position of the said equipment, can not carry out complete monitoring to the illegal behavior of driving over the speed limit of emphasis haulage vehicle.In order to address the above problem, in Chinese invention patent CN103208187A, a kind of method that detects overspeed of vehicle is disclosed, OBD interface connecting communication device on motor vehicle, the vehicle operating information of this communication device collection vehicle working time, longitude, latitude, the speed of a motor vehicle, automobile logo, by wireless network, send to server, server compares the speed in vehicle operating information and this restriction vehicle that section is set, judge, judged result is stored in to server.It is flexible, convenient that this scheme detects, and cost is low and the scope of application is wider.But, in this scheme, the data of the restriction speed of a motor vehicle of setting section need to be set in server.Due in current road network, due to situations such as newly-built, reconstructions, cause the situation in some sections to convert, in addition also exist some special circumstances to cause the restriction speed in the current section of Iterim Change, these information are difficult to feed back in time in server, make in server information updating lag behind, while therefore using the method monitor vehicle hypervelocity, exist restriction speed to change and the erroneous judgement that causes.
Summary of the invention
For this reason, technical matters to be solved by this invention is the method for monitor vehicle hypervelocity of the prior art, that the information of the restriction speed of a motor vehicle corresponding to section is stored in server, the problem of the hypervelocity erroneous judgement that exists restriction speed upgrade to lag behind and cause, causes the system of traffic hazard thereby propose a kind of vehicle speed value that limits according to the speed limit real-time update on section, a kind of hypervelocity of preventing emphasis haulage vehicle that can not produce erroneous judgement.
For solving the problems of the technologies described above, of the present inventionly provide a kind of hypervelocity of preventing emphasis haulage vehicle to cause the system of traffic hazard, comprising:
Image acquisition units, arranges onboard, and the sign board of vehicle front setting is carried out to image acquisition;
Graphics processing unit, obtains the image information that described image acquisition units collects, and extracts the speed(-)limit sign board in current collection image, and identifies the section speed limit in this speed(-)limit sign board;
Section speed limit storage unit, when vehicle crosses, the position at the speed(-)limit sign board place that is located at vehicle front is follow-up to continue while sailing, and the section speed limit that described graphics processing unit is obtained stores section speed limit storage unit into;
Speed acquisition unit, the current vehicle speed information of Real-time Collection vehicle;
Overspeed alarm alarm unit, compares current vehicle speed value and described section speed limit, when the current vehicle speed of vehicle surpasses this section speed limit, carries out alarm.
Preferably, described graphics processing unit also comprises the releasing speed(-)limit sign board extracting in current collection image, when obtaining this, removes after limit notice plate image information, and described section speed limit storage unit is removed by this section speed limit that limit notice plate is corresponding and removed.
Preferably, described speed acquisition unit is connected with the OBD interface of vehicle.
Prevent the hypervelocity of emphasis haulage vehicle to cause a method for traffic hazard, comprise the steps:
The sign board in Vehicle Driving Cycle the place ahead is carried out to image acquisition;
Obtain the image information that described image acquisition units collects, and extract the speed(-)limit sign board in current collection image, and identify the section speed limit in this speed(-)limit sign board;
When vehicle crosses, this speed(-)limit sign board position is follow-up to continue while sailing, and the section speed limit in this section that described graphics processing unit is obtained is as the current speed limit of this vehicle;
The current vehicle speed value of Real-time Collection vehicle, compares current vehicle speed value and described section speed limit, when the current vehicle speed value of vehicle surpasses this section speed limit, carries out alarm.
Preferably, when the sign board in Vehicle Driving Cycle the place ahead is carried out to image acquisition, to being positioned at the sign board that vehicle heading arranges at vision field of driver, carry out image acquisition.
Preferably, the process of extracting the speed(-)limit sign board in the sign board image of current collection comprises: default speed(-)limit sign board model, and by obtaining speed(-)limit sign board with comparing of this model.
Preferably, when vehicle crosses, this speed(-)limit sign board position is follow-up to continue while sailing, and the section speed limit in this section that described graphics processing unit is obtained, as the process of the current speed limit of this vehicle, comprises
Extract the positional information at speed(-)limit sign board place and the positional information at vehicle place, when vehicle crosses this positional information, enter behind speed limit district the current speed limit using the section speed limit in this speed(-)limit sign board as this vehicle.
Preferably, the positional information at described speed(-)limit sign board place comprises longitude and latitude information; The positional information at described vehicle place comprises longitude and latitude information.
Preferably, also comprise: the vehicle speed value of Real-time Collection vehicle, carries out overspeed alarming prompting as surpassed legal top speed value;
The image information that extraction collects, removes speed(-)limit sign bridge queen when obtaining, and removes speed limit.
Preferably, described type of alarm is audio alert or display display alarm, points out current overspeed of vehicle, and provides current vehicle speed value and current section speed limit.
Technique scheme of the present invention has the following advantages compared to existing technology,
(1) the invention provides the method and system that a kind of hypervelocity of preventing emphasis haulage vehicle causes traffic hazard, comprise image acquisition units, graphics processing unit, section speed limit storage unit, speed acquisition unit and overspeed alarm alarm unit, speed(-)limit sign board by capture setting on section, and extract speed(-)limit sign board and section speed limit, when vehicle crosses the current speed limit using section speed limit as vehicle of this speed(-)limit sign bridge queen, then obtain in real time the travelling speed of vehicle, when the travel speed of vehicle surpasses after this speed limit, carry out alarm.Section speed limit in this scheme, can change with the variation of the speed(-)limit sign board in section, driver driving vehicle is also to using this speed(-)limit sign board as speed limit foundation, effectively avoided the method for monitor vehicle hypervelocity of the prior art, the information of the restriction speed of a motor vehicle that section is corresponding is stored in server, exists restriction speed upgrade to lag behind and the problem of the hypervelocity erroneous judgement that causes.In this programme, obtain in real time this speed(-)limit sign board information as speed limit foundation, there is not the problem of hysteresis, erroneous judgement, the speed limit that vehicle enters on the speed(-)limit sign obtaining according to system after speed-limit road section is monitored Vehicle Speed, when surpassing speed limit, present speed just can report to the police, real-time and the accuracy of speed limit monitoring have greatly been improved, and by the warning to driver, allow driver recognize and exceed the speed limit and return to suitable speed driving, the traffic hazard that has prevented hypervelocity to cause.
(2) vehicle-mounted hypervelocity automatic-prompting alarm method of the present invention, the travel image of front region of collection vehicle, to being positioned at the sign board that vehicle heading arranges at vision field of driver, carry out image acquisition, by choosing the scope of appropriate image acquisition, improve speed and the precision of data processing, be conducive to so accurately identification and extract speed(-)limit sign board and the section speed limit in image.
(3) hypervelocity of prevention emphasis haulage vehicle of the present invention causes the method for traffic hazard, by the OBD interface acquisition of vehicle, work as the real-time speed value of vehicle in front and guaranteed that the velometer displayed value of this velocity amplitude and vehicle and actual travel speed are consistent, and have improved the accuracy of speed monitoring.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart that the hypervelocity of prevention emphasis haulage vehicle of the present invention causes the system of traffic hazard;
Fig. 2 is the process flow diagram that the hypervelocity of prevention emphasis haulage vehicle of the present invention causes the method for traffic hazard.
In figure, Reference numeral is expressed as: 21-image acquisition units, 22-graphics processing unit, 23-section speed limit storage unit, 24-speed acquisition unit, 25-overspeed alarm alarm unit, 11-speed(-)limit sign board.
Embodiment
embodiment 1:
In the present embodiment, provide a kind of hypervelocity of preventing emphasis haulage vehicle to cause the system of traffic hazard, comprise image acquisition units 21, graphics processing unit 22, section speed limit storage unit 23, speed acquisition unit 24, overspeed alarm alarm unit 25, structural drawing as shown in Figure 1.Specific as follows:
Image acquisition units 21 for camera is onboard set, can realize the Quick Catch to image in motion process, by this camera, the image in the vision field of driver of Vehicle Driving Cycle the place ahead is gathered.When image acquisition, the main speed(-)limit sign board 11 gathering in identification vehicle front vision field of driver.
Graphics processing unit 22, obtains the image information that described image acquisition units 21 collects, and extracts the speed(-)limit sign board 11 of current collection, and identifies the section speed limit in this speed(-)limit sign board 11.Because the implication of different traffic mark boards is different, its color and content are also all different.For example, domestic speed(-)limit sign board 11 is generally redness, and has a red annulus, and the numeral in this annulus is the velocity amplitude of restriction.First, default speed(-)limit sign board 11 models, by obtaining speed(-)limit sign board 11 with comparing of this model.So just, by the mode of mating and identifying, identify speed(-)limit sign board 11 and section speed limit wherein.
Section speed limit storage unit 23, when vehicle crosses, this speed(-)limit sign board 11 positions in the place ahead that is located at vehicle operating direction are follow-up to continue while sailing, the section speed limit that described graphics processing unit 22 is obtained, as the current speed limit in this this section, stores section speed limit storage unit 23 into.Because speed-limit road section all can first arrange speed(-)limit sign board 11, therefore, by behind the position at speed(-)limit sign board 11 places, enter the speed limit district that this speed(-)limit sign board 11 is demarcated.
Speed acquisition unit 24, the current vehicle speed information of Real-time Collection vehicle.Can, by connecting the speed acquisition device of the OBD interface of vehicle, obtain the real-time speed information of this vehicle.
Overspeed alarm alarm unit 25, compares current vehicle speed value and described section speed limit, when the current vehicle speed of vehicle surpasses this speed limit, carries out alarm.The mode that prompting is herein reported to the police can be that phonetic alarm is reported to the police, or video display reports to the police, and can point out the speed limit in the current section of user for how many when reporting to the police, and present speed is how many, and reminding user recovery running velocity is to this below speed limit of section.
The hypervelocity of the prevention emphasis haulage vehicle in the present embodiment causes the system of traffic hazard, comprise image acquisition units 21, graphics processing unit 22, section speed limit storage unit 23, speed acquisition unit 24, overspeed alarm alarm unit 25, sign board by capture setting in Vehicle Driving Cycle road ahead, and extract speed(-)limit sign board 11 and section speed limit, the current speed limit using section speed limit as vehicle after vehicle crosses this speed(-)limit sign board 11, then obtain in real time the travelling speed of vehicle, when the travel speed of vehicle surpasses after this speed limit, carry out alarm.Speed-limiting messages in this scheme, can change with the variation of the speed(-)limit sign board 11 in road sign, driver driving vehicle is also to using this speed(-)limit sign board 11 as speed limit foundation, effectively avoided the method for monitor vehicle hypervelocity of the prior art, the information of the restriction speed of a motor vehicle that section is corresponding is stored in server, exists restriction speed upgrade to lag behind and the problem of the hypervelocity erroneous judgement that causes.In this programme, obtain in real time these speed(-)limit sign board 11 information as speed limit foundation, there is not the problem of hysteresis, erroneous judgement, after entering speed limit district, generate section speed limit, when present speed surpasses speed limit, just can report to the police, greatly improved real-time and the accuracy of speed limit monitoring.By the warning to driver, allow driver recognize and exceed the speed limit and return to suitable speed driving, the traffic hazard that has prevented hypervelocity to cause.
As other further embodiments, described graphics processing unit 22 also comprises the releasing speed(-)limit sign board 11 extracting in current collection image, when obtaining this, remove after limit notice plate image information, described section speed limit storage unit 23 is removed by this section speed limit that limit notice plate is corresponding and is removed.Like this, for the section of special limit, after speed limit release, driver can adjust running velocity, for driver recovers drive speed, provides foundation, can not produce wrong report.
embodiment 2:
In the present embodiment, provide a kind of hypervelocity of preventing emphasis haulage vehicle to cause the method for traffic hazard, comprise the steps:
(1) vehicle speed value of Real-time Collection vehicle, can Negotiation speed collecting unit the present speed value (also can obtain by vehicle speedometer dial plate the present speed of vehicle) of the vehicle that provides of 24 hours continuous collection vehicle OBD interfaces.Judge whether the current speed of vehicle surpasses the highest road limit value of safety traffic, as surpassed legal top speed value, carry out overspeed alarming prompting.At present, in the security legislation of China, stipulate, the highest running speed of vehicle is 120 kilometers per hour, so need remain in this top speed during vehicle running velocity, otherwise carries out alarm.
(2) image acquisition in the vision field of driver of Vehicle Driving Cycle the place ahead is gathered.Image by camera collection Vehicle Driving Cycle the place ahead vision field of driver of image acquisition units 2, must include the sign board arranging on section.
(2) graphics processing unit 22 obtains the image information that described image acquisition units 21 collects, and extracts the speed(-)limit sign board 11 in the sign board image of current collection, and identifies the section speed limit in this speed(-)limit sign board 11.Because the implication of different traffic mark boards is different, its color and content are also all different.For example, domestic speed(-)limit sign board 11 is generally redness, and has a red annulus, and the numeral in this annulus is the velocity amplitude of restriction.By the mode of mating and identifying, can identify speed(-)limit sign board 11 and section speed limit wherein.Also can preset speed(-)limit sign board 11 models herein, by comparing of the image collecting and this model obtained to speed(-)limit sign board 11, then by character recognition method, obtain the section speed limit in this speed(-)limit sign board 11.
(3) when vehicle crosses, these speed(-)limit sign board 11 positions are follow-up to continue while sailing, and the section speed limit that described graphics processing unit 22 is obtained, as the current speed limit of this vehicle, is stored in section speed limit storage unit 23.Because speed limit district all can first arrange this speed(-)limit sign board 11, therefore, by behind the position at these speed(-)limit sign board 11 places, enter the speed limit district that this speed(-)limit sign board 11 is demarcated, so just the speed of restriction and position can be mapped in real time.Then, positional information by extracting speed(-)limit sign board 11 places is as the positional information (as longitude and latitude) at longitude and latitude and vehicle place, when crossing this positional information, vehicle enters behind speed limit district the current speed limit using the section speed limit in this speed(-)limit sign board 11 as this vehicle.
(4) the current vehicle speed value of Real-time Collection vehicle, can accurately obtain the current speed of a motor vehicle by connecting vehicle OBD communication interface, current vehicle speed value and described section speed limit are compared, when the current vehicle speed of vehicle surpasses this speed limit, carry out alarm, the general mode of selecting voice message, allows human pilot recognize and exceeds the speed limit, and needs Reduced Speed Now.Overspeed alarm alarm unit 25 can be audio alert, also can carry out display reminding warning by display, when reporting to the police, provide current vehicle speed value and current section speed limit, for recovering travel speed, driver provides reference to the speed limit of section.
The hypervelocity of the prevention emphasis haulage vehicle in the present embodiment causes the method for traffic hazard, obtain in real time these speed(-)limit sign board 11 speed limits as speed limit foundation, there is not the problem of hysteresis, erroneous judgement, after entering speed limit district, generate speed limit, when present speed surpasses, just can report to the police, greatly improve real-time and the accuracy of speed limit monitoring.
In said process, can further include the mode of processing by image and extract the image information collecting, when obtaining, remove after speed(-)limit sign board 11, remove this section speed limit.In the image collecting, there is removing speed(-)limit sign board 11, mean that current speed limit region finishes, therefore can remove the speed limit in this section, the section speed limit of storage in section speed limit storage unit 23 is removed, if enter new speed-limit road section, restart speed limit.Like this, just speed limit situation is combined with current actual road conditions, for driver provides overspeed alarm accurately, report to the police.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being extended out thus or change are still among the protection domain in the invention.
Claims (10)
1. prevent the hypervelocity of emphasis haulage vehicle to cause a system for traffic hazard, it is characterized in that, comprising:
Image acquisition units, arranges onboard, and the sign board of vehicle front setting is carried out to image acquisition;
Graphics processing unit, obtains the image information that described image acquisition units collects, and extracts the speed(-)limit sign board in current collection image, and identifies the section speed limit in this speed(-)limit sign board;
Section speed limit storage unit, when vehicle crosses, the position at the speed(-)limit sign board place that is located at vehicle front is follow-up to continue while sailing, and the section speed limit that described graphics processing unit is obtained stores section speed limit storage unit into;
Speed acquisition unit, the current vehicle speed information of Real-time Collection vehicle;
Overspeed alarm alarm unit, compares current vehicle speed value and described section speed limit, when the current vehicle speed of vehicle surpasses this section speed limit, carries out alarm.
2. the hypervelocity of prevention emphasis haulage vehicle according to claim 1 causes the system of traffic hazard, it is characterized in that, described graphics processing unit also comprises the releasing speed(-)limit sign board extracting in current collection image, when obtaining this, remove after limit notice plate image information, described section speed limit storage unit is removed by this section speed limit that limit notice plate is corresponding and is removed.
3. the hypervelocity of prevention emphasis haulage vehicle according to claim 1 and 2 causes the system of traffic hazard, it is characterized in that, described speed acquisition unit is connected with the OBD interface of vehicle.
4. prevent the hypervelocity of emphasis haulage vehicle to cause a method for traffic hazard, it is characterized in that, comprise the steps:
The sign board in Vehicle Driving Cycle the place ahead is carried out to image acquisition;
Obtain the image information that described image acquisition units collects, and extract the speed(-)limit sign board in current collection image, and identify the section speed limit in this speed(-)limit sign board;
When vehicle crosses, this speed(-)limit sign board position is follow-up to continue while sailing, and the section speed limit in this section that described graphics processing unit is obtained is as the current speed limit of this vehicle;
The current vehicle speed value of Real-time Collection vehicle, compares current vehicle speed value and described section speed limit, when the current vehicle speed value of vehicle surpasses this section speed limit, carries out alarm.
5. the hypervelocity of prevention emphasis haulage vehicle according to claim 4 causes the method for traffic hazard, it is characterized in that, when the sign board in Vehicle Driving Cycle the place ahead is carried out to image acquisition, to being positioned at the sign board that vehicle heading arranges at vision field of driver, carry out image acquisition.
6. according to the hypervelocity of the prevention emphasis haulage vehicle described in claim 4 or 5, cause the method for traffic hazard, it is characterized in that, the process of extracting the speed(-)limit sign board in the sign board image of current collection comprises: default speed(-)limit sign board model, and by obtaining speed(-)limit sign board with comparing of this model.
7. according to the hypervelocity of the arbitrary described prevention emphasis haulage vehicle of claim 4-6, cause the method for traffic hazard, it is characterized in that, when vehicle crosses, this speed(-)limit sign board position is follow-up to continue while sailing, the section speed limit in this section that described graphics processing unit is obtained, as the process of the current speed limit of this vehicle, comprises
Extract the positional information at speed(-)limit sign board place and the positional information at vehicle place, when vehicle crosses this positional information, enter behind speed limit district the current speed limit using the section speed limit in this speed(-)limit sign board as this vehicle.
8. according to the hypervelocity of the arbitrary described prevention emphasis haulage vehicle of claim 4-7, cause the method for traffic hazard, it is characterized in that, the positional information at described speed(-)limit sign board place comprises longitude and latitude information; The positional information at described vehicle place comprises longitude and latitude information.
9. according to the hypervelocity of the arbitrary described prevention emphasis haulage vehicle of claim 4-8, cause the method for traffic hazard, it is characterized in that, also comprise:
The vehicle speed value of Real-time Collection vehicle, carries out overspeed alarming prompting as surpassed legal top speed value;
The image information that extraction collects, removes speed(-)limit sign bridge queen when obtaining, and removes speed limit.
10. according to the hypervelocity of the arbitrary described prevention emphasis haulage vehicle of claim 4-9, cause the method for traffic hazard, it is characterized in that, described type of alarm is audio alert or display display alarm, points out current overspeed of vehicle, and provides current vehicle speed value and current section speed limit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410156921.7A CN103956067B (en) | 2014-04-18 | 2014-04-18 | The hypervelocity of a kind of key preventive haulage vehicle causes the system and method for vehicle accident |
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| CN201410156921.7A CN103956067B (en) | 2014-04-18 | 2014-04-18 | The hypervelocity of a kind of key preventive haulage vehicle causes the system and method for vehicle accident |
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| CN113393011A (en) * | 2020-03-13 | 2021-09-14 | 百度在线网络技术（北京）有限公司 | Method, apparatus, computer device and medium for predicting speed limit information |
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| CN113393011A (en) * | 2020-03-13 | 2021-09-14 | 百度在线网络技术（北京）有限公司 | Method, apparatus, computer device and medium for predicting speed limit information |
| CN113393011B (en) * | 2020-03-13 | 2024-05-10 | 百度在线网络技术（北京）有限公司 | Method, device, computer equipment and medium for predicting speed limit information |
| CN113947921A (en) * | 2020-07-17 | 2022-01-18 | 南京酷派软件技术有限公司 | Overspeed prompting method, overspeed prompting device, storage medium and terminal |
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