CN104021673A - System and method for rapidly finding congestion causing reasons by utilizing radar tracking technology - Google Patents
System and method for rapidly finding congestion causing reasons by utilizing radar tracking technology Download PDFInfo
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- CN104021673A CN104021673A CN201410269880.2A CN201410269880A CN104021673A CN 104021673 A CN104021673 A CN 104021673A CN 201410269880 A CN201410269880 A CN 201410269880A CN 104021673 A CN104021673 A CN 104021673A
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Abstract
The invention discloses a system and method for rapidly finding congestion causing reasons by utilizing a radar tracking technology. Vehicles are continuously tracked through the radar tracking technology, and the state information of the vehicles in a bridge and a tunnel can be accurately obtained. Whether congestion happens to an express way or the bridge or the tunnel or trigger points causing the regional transportation congestion happen, the congestion or the trigger points can be found in time. According to the system and method, congestion time, congestion triggering point time, the congestion position and the congestion triggering point position can be associated together for displaying, when the congestion triggering points are displayed on an electronic map, the congestion triggering points are directly matched with image information, and a user can see the reasons causing the congestion clearly. When the traffic conditions in a certain area of the bridge, the tunnel and the express way are played back, the traffic conditions can be dynamically displayed according to the congestion time, the congestion triggering point time and the congestion triggering point image, and transportation policy makers can better know the traffic conditions of the bridge, the tunnel and the express way.
Description
Technical field
The present invention relates to intelligent transport technology field, specifically a kind ofly utilize radar tracking technology to find fast to block up to cause the system and method for reason.
Background technology
Along with the continuous expansion of city size, transport need rapid growth, road traffic blocks up day by day serious.For alleviate the many cities of traffic congestion all built over strait, across Jiang great Qiao, or wear mountain and built tunnel, after building up, these bridge tunnels all become the through street in city, the magnitude of traffic flow is very large, can not find fast that timely processing will cause large-area the blocking up of trip generation in a section or a regional extent once there be exception parking, reduce the traffic capacity of bridge, tunnel, brought very big inconvenience to people's trip.Improve road efficiency, just must find and process and block up fast, but how accurately to detect that in this course the initiation point that blocks up is the key of dealing with problems.
For this reason, the patent that main inventor submitted to and authorizes to State Intellectual Property Office on November 17th, 2009, publication number is: CN101719314A, denomination of invention is " area traffic jamming triggering point record analysis method ".Cardinal principle is: by being arranged on the analysis processing computer of control center, traffic congestion Rapid Alarm device and the communication line being arranged on city road network forms.A default tested measuring point upstream and downstream relational database in analysis processing computer, operation has the point analysis of initiation program.Often there is traffic congestion region on a large scale, in intersection, ring road mouth or the junction of two streams of through street or loop, or according to actual needs in through street or loop every a segment distance, tested measuring point is set respectively, the Rapid Alarm device that blocks up is installed.After certain tested measuring point gets congestion, what this point was installed block up, and Rapid Alarm device can send jam alarming information to the analysis processing computer of point duty control center fast.
But in technique scheme, still cannot be to bridge, each of tunnel vehicle carries out omnidistance real-time follow-up problem, simultaneously can not be real-time, find to block up and block up fast initiation point, the moment that the moment that can not occur the section that blocks up or the initiation point that blocks up occur records in time and shows, also cannot learn the reason of blocking up and causing, be not easy to traffic administration person and understand the situation of the dynamic traffic jamming triggering point in city in a period of time or region, and communications policy person cannot provide the method for administering targetedly for the different sections that blocks up, the accurate foundation of decision-making is provided cannot to communications policy person.
Summary of the invention
Technical matters to be solved by this invention is in prior art, to find in real time, fast the initiation point that blocks up in bridge, tunnel, and can not find in real time, fast blocking up on current through street, caused by front, thereby or providing of being caused by this some section is a kind of to be utilized radar tracking technology to find fast to block up to cause the system and method for reason.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The invention provides a kind of radar tracking technology of utilizing and find fast to block up to cause the system of reason, comprising:
Radar tracking unit, carries out omnidistance Continuous Tracking to the vehicle travelling, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle;
Block up and cause some judging unit, it comprises:
The first judge module, judges that whether the speed of tracked rolling stock is consistent;
The second judge module, in the time that the speed of tracked rolling stock is inconsistent, obtain the second speed of First Speed and L rice, the front vehicle of current location vehicle, the difference that judges second speed and First Speed be whether on the occasion of and be greater than velocity contrast threshold value, if judge that congestion in road and current location are the initiation point that blocks up;
The 3rd judge module, in the time that tracked rolling stock speed is consistent, for the speed that judges tracked rolling stock whether all lower than threshold speed, if judge congestion in road but be not the initiation point that blocks up;
Some video acquisition unit, runway within the scope of radar tracking is realized to omnidistance image acquisition, in the time that runway gets congestion initiation point, collection includes the image information in the current line track of the initiation dot image of blocking up, described image information is sent to described Surveillance center, and described Surveillance center obtains to cause blocking up according to described image information causes the reason of point;
Display unit, shows to block up by electronic chart and causes the moment of the position of point, the initiation point appearance of blocking up and block up and cause the image of some region.
In described the second judge module, be preset with very first time threshold value, if the difference of second speed and First Speed exceedes described very first time threshold value higher than velocity contrast threshold value and duration, judge that congestion in road and current location are as the initiation point that blocks up.
In described the 3rd judge module, be preset with the second time threshold, if car speed exceedes described the second time threshold lower than threshold speed and duration, judge it is congestion in road point section.
In described the 3rd judge module, described threshold speed=speed limit × N, wherein N is coefficient constant, and 0 < N≤0.5;
In described the second judge module, described velocity contrast threshold value=A × second speed, wherein A is coefficient constant and 0 < A≤0.5.
In described the second judge module, 0 < L≤20.
The present invention also provides a kind of radar tracking technology find fast to block up method of the system that causes reason of utilizing, and comprises the steps:
S1: adopt radar tracking technology the vehicle travelling to be carried out to Continuous Tracking, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle;
S2: judge according to the speed of a motor vehicle of vehicle within the scope of radar tracking and the speed of a motor vehicle situation of change initiation point that whether blocks up on road, it specifically comprises:
S21: whether the speed that judges tracked rolling stock is consistent, enters step S22 if inconsistent, if unanimously enter step S23;
S22: the second speed of obtaining First Speed and L rice, the front vehicle of current location vehicle, the difference that judges second speed and First Speed be whether on the occasion of and be greater than velocity contrast threshold value, if judge after congestion in road and current location cause point as blocking up and enter step S3, otherwise return to step S1;
S23: judge that whether car speed is all lower than threshold speed, if judge congestion in road but be not to block up after causing point to enter step S24, otherwise return to step S1;
S24: the moment that shows block up section and the appearance of blocking up by electronic chart;
S3: gathering blocks up causes the image of some region, comprises and cause the information of vehicles blocking up in this image;
S4: by electronic chart show block up cause point position, block up and cause the moment that point occurs and block up and cause the image of some region, cause the Image Acquisition reason of blocking up of some region according to blocking up.
In described step S22, also comprise the steps:
Set very first time threshold value, if the difference of second speed and First Speed be on the occasion of and exceed described very first time threshold value higher than velocity contrast threshold value and duration, judge that congestion in road and current location are as the initiation point that blocks up.
In described step S23, also comprise the steps:
Set the second time threshold, if car speed exceedes described the second time threshold lower than threshold speed and duration, judge it is congestion in road point section.
In described step S22, described threshold speed=speed limit × N, wherein N is coefficient constant, and 0 < N≤0.5;
In described step S23, described velocity contrast threshold value=A × second speed, wherein A is coefficient constant and 0 < A≤0.5.
In described step S22,0 < L≤20.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) of the present inventionly utilize radar tracking technology to find fast to block up to cause the system and method for reason, by radar tracking technology, vehicle is carried out to Continuous Tracking, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle, adopt radar tracking technology not only can follow the tracks of the vehicle on through street, also can accurately obtain the status information of the vehicle in bridge, tunnel.So no matter on through street or bridge, tunnel in get congestion or get congestion while causing some, can both find in time, thereby on electronic chart, directly show the position blocking up and occur blocking up and cause the position of point.Such scheme in the present invention, moment that can also be shown according to system clock, by moment that occurs blocking up and occurring block up cause point moment with the position that blocks up, block up and cause a some position and be associated together demonstration.Such scheme of the present invention, while causing point when finding to block up, gathering blocks up causes the image of some region, comprises and cause the information of vehicles blocking up in this image.On electronic chart, show while blocking up initiation point, be directly combined with image information, can be very clear to causing the reason of blocking up.When traffic conditions in certain region of playback bridge, tunnel and through street of traffic administration person or decision maker, the moment that the moment that just can occur according to blocking up, the initiation point that blocks up occur and the initiation point picture that blocks up, dynamically show, person can better understand bridge, tunnel and Expressway Traffic situation to make communications policy, to which section easily occur blocking up in which in moment, easily there is blocking up initiation point in which section, and be there is blocking up blocking up of causing that point, what reason cause when can be perfectly clear.If seen for a long time, the reason that can get congestion to a certain section is added up, and can provide targetedly and to alleviate the strategy that blocks up the difference of the different sections of highway reason of blocking up.
(2) of the present inventionly utilize radar tracking technology to find fast to block up to cause the system and method for reason, very first time threshold value and the second time threshold are also set, when the difference of second speed and First Speed on the occasion of and exceed described very first time when threshold value higher than velocity contrast threshold value and duration, then judge road as block up and current location as blocking up initiation point; Rolling stock speed exceedes described the second time threshold lower than threshold speed and duration, then judges that road is to block up and current location is not the initiation point that blocks up.Can reduce rate of false alarm by above-mentioned time threshold is set, further improve the accuracy of system.
Brief description of the drawings
For content of the present invention is more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 utilizes described in one embodiment of the invention radar tracking technology to find fast to block up to cause the system principle diagram of reason;
Fig. 2 utilizes described in one embodiment of the invention radar tracking technology to find fast to block up to cause the process flow diagram of reason method;
Fig. 3 is the schematic diagram of one embodiment of the invention radar tracking unit set-up mode.
Embodiment
embodiment 1
The present embodiment provides a kind of radar tracking technology of utilizing to find fast to block up to cause the system of reason, and as shown in Figure 1, it comprises: radar tracking unit, block up and cause some judging unit, video acquisition unit and a display unit.Wherein:
Described radar tracking unit, carries out omnidistance Continuous Tracking to the vehicle travelling, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle.
Described blocking up caused some judging unit, and it comprises:
The first judge module, judges that whether the speed of tracked rolling stock is consistent.Its medium velocity can be unanimously that the travel speed of rolling stock is roughly equal, and the fastest speed and the slowest speed differ also little, for example, be all about 50km/ hour.And if there is the vehicle having about 50km/ hour, some vehicles are but about 30km/ hour, at this time car speed has just been inconsistent situation.
The second judge module, in the time that the speed of tracked rolling stock is inconsistent, obtain the second speed of First Speed and L rice, the front vehicle of current location vehicle, the difference that judges second speed and First Speed be whether on the occasion of and be greater than velocity contrast threshold value, if judge that congestion in road and current location are the initiation point that blocks up; Wherein, L rice can be selected according to actual conditions, generally selects within 20 meters, is preferably 10 meters.Can think that on through street, existing mobile blocking up causes some detection zone, the length that detection zone is selected in this initiation of blocking up is L rice.If vehicle speed before entering this initiation point detection zone that blocks up is always very low, there is suddenly the raising of a higher value and leave this speed of blocking up behind initiation point detection zone, this region is and causes the region blocking up obviously.
The 3rd judge module, for the speed that judges tracked rolling stock whether all lower than threshold speed, if judge congestion in road but be not the initiation point that blocks up.
Some described video acquisition module, runway within the scope of radar tracking is realized to omnidistance image acquisition, in the time that runway gets congestion initiation point, collection includes the image information in the current line track of the initiation dot image of blocking up, described image information is sent to described Surveillance center, and described Surveillance center obtains to cause blocking up according to described image information causes the reason of point.
Described display unit, shows to block up by electronic chart and causes the moment of the position of point, the initiation point appearance of blocking up and block up and cause the image of some region.
Wherein, described radar tracking unit can be the multiple radar trackings unit arranging on the way, and the monitoring range of the radar tracking unit that wherein monitoring range of each radar tracking unit is adjacent with it has overlapping, as shown in Figure 3.
As shown in Figure 3, some radar trackings unit, be arranged at intervals at setting along vehicle heading according to certain distance, described in each, the radar tracking scope of radar tracking unit contains at least two reference points, and Article 1 reference point and the last item reference point within the scope of each radar tracking is present in adjacent two described radar tracking scopes simultaneously; Described in each, radar tracking unit carries out Continuous Tracking to each vehicle entering within the scope of its radar tracking, in the time that headstock arrives the Article 1 reference point within the scope of radar tracking, judge that vehicle sails radar tracking scope into, in the time that headstock arrives the last item reference point, judge that vehicle rolls this radar tracking scope away from.00,01,02,03 4 reference point wherein, can be the actual reference point being labeled in radar display frame, can be also in radar display frame the static reference object such as electric pole, flower bed.And in the time that vehicle sails under bridge or in tunnel, reference point herein can also be starting point, terminal or the tunnel of bridge entrance, export corresponding position.Corresponding trackside is provided with three radar tracking unit, and the radar tracking scope of each radar tracking unit is determined with the dotted line of its both sides and the intersection point of road.As can be seen from the figure, reference point 01 is present within the scope of the radar monitoring of first radar tracking unit and second radar tracking unit simultaneously, and reference point 02 is present within the scope of the radar tracking of second radar tracking unit and the 3rd radar tracking unit simultaneously.So,, in the time that the headstock of vehicle arrives reference point 01, can judge that vehicle has rolled the radar tracking scope that the radar tracking scope of first radar tracking unit has been sailed second radar tracking unit into simultaneously away from.In the time that the headstock of vehicle arrives reference point 02, can judge that vehicle has rolled the radar tracking scope of second radar tracking unit away from, sailed the radar tracking scope of the 3rd radar tracking unit into simultaneously, realize the Continuous Tracking to vehicle with this.
By radar tracking technology, vehicle is carried out to Continuous Tracking, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle, when a certain car blocks up, just can obtain immediately the position of parking vehicle because accident parking causes follow-up vehicle queue to cause, also block up and cause the position at some place like this.Instantaneous acquiring blocks up and causes the image information of some region, the position that image information is occurred with the initiation point that blocks up and the moment of appearance are associated, like this in the time adopting electronic chart to check the traffic of bridge, tunnel and through street, ejection block up cause point information time, eject image and moment simultaneously.Decision maker can obtain the concrete reason that blocks up and produce according to image, and fault or accident or other unscheduled events etc. have occurred such as vehicle.Like this, when traffic conditions in certain region of playback bridge, tunnel and through street of traffic administration person or decision maker, the moment that the moment that just can occur according to blocking up, the initiation point that blocks up occur and the image that blocks up initiation point region, dynamically show, person can better understand bridge, tunnel and Expressway Traffic situation to make communications policy, to which section easily occur blocking up in which in moment, easily there is blocking up initiation point in which section, its block up cause point be what reason cause can be perfectly clear.If for example some sections place; except in morning peak and evening peak period; also often can be because the scratch accident between vehicle causes blocking up; so just can be judged to be this section and easily occur traffic hazard, need to strengthen police strength in this section or set up prompting message board and remind that driver notes going slowly etc.By the accumulation of historical data, the reason that just can get congestion to a certain section is added up like this, can find out the regularity and the sudden reason that cause a certain section to block up, proposes to administer targetedly strategy.
Due to each block up section or block up cause point all associated with the moment, if therefore show according to there is the moment section or block up and cause when some of blocking up on electronic chart, can clearly recognize which section has first occurred to block up, or which position is the initiation point that first occurred blocking up, can between section, whether influence each other according to showing that result judgement be blocked up.And, can, according to showing result, infer the moment easily getting congestion in some section, can implement prediction scheme, before the generation of blocking up, carry out traffic dispersion etc., accurate foundation is provided can to communications policy person.
In such scheme, owing to adopting radar tracking technology to carry out Continuous Tracking to vehicle, not only can follow the tracks of the vehicle on through street, also can accurately obtain the status information of the vehicle in bridge, tunnel.To be so no matter in bridge, tunnel or through street, while causing point when getting congestion or blocking up, can both to find in time.
In the present embodiment, in described the second judge module, be preset with very first time threshold value, if the difference of second speed and First Speed on the occasion of and exceed described very first time threshold value higher than velocity contrast threshold value and duration, judge that congestion in road and current location are as the initiation point that blocks up.Correspondingly, in described the 3rd judge module, be preset with the second time threshold, if car speed exceedes described the second time threshold lower than threshold speed and duration, judge it is congestion in road point section.The setting of described very first time threshold value and described the second time threshold can be selected flexibly, and the two also can equate, generally can select 10 seconds, 15 seconds, 30 seconds etc., preferably surpasses after one minute.Can reduce rate of false alarm by above-mentioned time threshold is set, further improve the accuracy of system.
In the present embodiment, in described the 3rd judge module, described threshold speed=speed limit × N, wherein N is coefficient constant, and 0 < N≤0.5, is preferably 0.3.For example on general through street, speed limit is 100km/ hour, can think so if the travel speed of all vehicles in certain section of region is all less than and can thinks congestion in road in the situation of 30km/ hour.If but the speed of all vehicles is all less than threshold speed, can only illustrates that section blocks up, but initiation point can not be described.
In described the second judge module, described velocity contrast threshold value=A × second speed, wherein A is coefficient constant and 0 < A≤0.5.A wherein can be chosen as 0.3,0.5 etc.If for example vehicle blocks up that to cause the speed of point before detection zone be 30KM/ hour sailing into, and vehicle leaves the speed causing behind some detection zone of blocking up and has directly been promoted to 100KM/ hour, can think and have and cause the initiation point blocking up in this region.
embodiment 2
The present embodiment provides a kind of radar tracking technology of utilizing to find fast to block up to cause the method for reason, as shown in Figure 3, comprises the following steps:
S1: adopt radar tracking technology the vehicle travelling to be carried out to Continuous Tracking, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle.
S2: judge according to the speed of a motor vehicle of vehicle within the scope of radar tracking and the speed of a motor vehicle situation of change initiation point that whether blocks up on road, it specifically comprises:
S21: whether the speed that judges tracked rolling stock is consistent, enters step S22 if inconsistent, if unanimously enter step S23.
S22: the second speed of obtaining First Speed and L rice, the front vehicle of current location vehicle, the difference that judges second speed and First Speed be whether on the occasion of and be greater than velocity contrast threshold value, if judge after congestion in road and current location cause point as blocking up and enter step S3, otherwise return to step S1.
S23: judge that whether car speed is all lower than threshold speed, if judge congestion in road but be not to block up after causing point to enter step S24, otherwise return to step S1.
S24: the moment that shows block up section and the appearance of blocking up by electronic chart.
S3: gathering blocks up causes the image of some region, comprises and cause the information of vehicles blocking up in this image.
S4: by electronic chart show block up cause point position, block up and cause the moment that point occurs and block up and cause the image of some region, cause the Image Acquisition reason of blocking up of some region according to blocking up.
By radar tracking technology, vehicle is carried out to Continuous Tracking, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle, when a certain car blocks up, just can obtain immediately the position of parking vehicle because accident parking causes follow-up vehicle queue to cause, also block up and cause the position at some place like this.Instantaneous acquiring blocks up and causes the image information of some region, the position that image information is occurred with the initiation point that blocks up and the moment of appearance are associated, like this in the time adopting electronic chart to check the traffic of bridge, tunnel and through street, ejection block up cause point information time, eject image and moment simultaneously.Decision maker can obtain the concrete reason that blocks up and produce according to image, and fault or accident or other unscheduled events etc. have occurred such as vehicle.Like this, when traffic conditions in the whole bridge of playback, tunnel and certain region, through street of traffic administration person or decision maker, the moment that the moment that just can occur according to blocking up, the initiation point that blocks up occur and the image that blocks up initiation point region, dynamically show, person can better understand bridge, tunnel and Expressway Traffic situation to make communications policy, to which section easily occur blocking up in which in moment, easily there is blocking up initiation point in which section, block up cause point be what reason cause can be perfectly clear.If for example some sections place; except in morning peak and evening peak period; also often can be because the scratch accident between vehicle causes blocking up; so just can be judged to be this section and easily occur traffic hazard, need to strengthen police strength in this section or set up prompting message board and remind that driver notes going slowly etc.By the accumulation of historical data, the reason that just can get congestion to a certain section is added up like this, can find out the regularity and the sudden reason that cause a certain section to block up, proposes to administer targetedly strategy.
Due to each block up section or block up cause point all associated with the moment, if therefore show according to there is the moment section or block up and cause when some of blocking up on electronic chart, can clearly recognize which section has first occurred to block up, or which position is the initiation point that first occurred blocking up, can between section, whether influence each other according to showing that result judgement be blocked up.And, can, according to showing result, infer the moment easily getting congestion in some section, can implement prediction scheme, before the generation of blocking up, carry out traffic dispersion etc., accurate foundation is provided can to communications policy person.
In the present embodiment, in described step S22, also comprise the steps: to set very first time threshold value, if the difference of second speed and First Speed on the occasion of and exceed described very first time threshold value higher than velocity contrast threshold value and duration, judge that congestion in road and current location are as the initiation point that blocks up.In described step S23, also comprise the steps: to set the second time threshold, if car speed exceedes described the second time threshold lower than threshold speed and duration, judge it is congestion in road point section.The setting of described very first time threshold value and described the second time threshold can be selected flexibly, and the two also can equate, generally can select 10 seconds, 15 seconds, 30 seconds etc., preferably surpasses after one minute.Can reduce rate of false alarm by above-mentioned time threshold is set, further improve the accuracy of system.
In the present embodiment, in described step S22, described threshold speed=speed limit × N, wherein N is coefficient constant, and 0 < N≤0.5, is preferably 0.3.For example on general through street, speed limit is 100km/ hour, can think so if the travel speed of all vehicles in certain section of region is all less than and can thinks congestion in road in the situation of 30km/ hour.If but the speed of all vehicles is all less than threshold speed, can only illustrates that section blocks up, but initiation point can not be described.
In described step S23, described velocity contrast threshold value=A × second speed, wherein A is coefficient constant and 0 < A≤0.5.A wherein can be chosen as 0.3,0.5 etc.If for example vehicle blocks up that to cause the speed of point before detection zone be 30KM/ hour sailing into, and vehicle leaves the speed causing behind some detection zone of blocking up and has directly been promoted to 100KM/ hour, can think and have and cause the initiation point blocking up in this region.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Claims (10)
1. utilize radar tracking technology to find fast to block up to cause a system for reason, it is characterized in that, comprising:
Radar tracking unit, carries out omnidistance Continuous Tracking to the vehicle travelling, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle;
Block up and cause some judging unit, it comprises:
The first judge module, judges that whether the speed of tracked rolling stock is consistent;
The second judge module, in the time that the speed of tracked rolling stock is inconsistent, obtain the second speed of First Speed and L rice, the front vehicle of current location vehicle, the difference that judges second speed and First Speed be whether on the occasion of and be greater than velocity contrast threshold value, if judge that congestion in road and current location are the initiation point that blocks up;
The 3rd judge module, in the time that tracked rolling stock speed is consistent, for the speed that judges tracked rolling stock whether all lower than threshold speed, if judge congestion in road but be not the initiation point that blocks up;
Some video acquisition unit, runway within the scope of radar tracking is realized to omnidistance image acquisition, in the time that runway gets congestion initiation point, collection includes the image information in the current line track of the initiation dot image of blocking up, described image information is sent to described Surveillance center, and described Surveillance center obtains to cause blocking up according to described image information causes the reason of point;
Display unit, shows to block up by electronic chart and causes the moment of the position of point, the initiation point appearance of blocking up and block up and cause the image of some region.
2. the radar tracking technology of utilizing according to claim 1 is found to block up to cause the system of reason fast, it is characterized in that:
In described the second judge module, be preset with very first time threshold value, if the difference of second speed and First Speed exceedes described very first time threshold value higher than velocity contrast threshold value and duration, judge that congestion in road and current location are as the initiation point that blocks up.
3. the radar tracking technology of utilizing according to claim 1 and 2 is found to block up to cause the system of reason fast, it is characterized in that:
In described the 3rd judge module, be preset with the second time threshold, if car speed exceedes described the second time threshold lower than threshold speed and duration, judge it is congestion in road point section.
4. find fast to block up to cause the system of reason according to the arbitrary described radar tracking technology of utilizing of claim 1-3, it is characterized in that:
In described the 3rd judge module, described threshold speed=speed limit × N, wherein N is coefficient constant, and 0 < N≤0.5;
In described the second judge module, described velocity contrast threshold value=A × second speed, wherein A is coefficient constant and 0 < A≤0.5.
5. find fast to block up to cause the system of reason according to the arbitrary described radar tracking technology of utilizing of claim 1-4, it is characterized in that, in described the second judge module, 0 < L≤20.
6. utilize radar tracking technology find fast the to block up method of the system that causes reason, it is characterized in that, comprise the steps:
S1: adopt radar tracking technology the vehicle travelling to be carried out to Continuous Tracking, the position of each vehicle of Real-time Obtaining and the speed of a motor vehicle;
S2: judge according to the speed of a motor vehicle of vehicle within the scope of radar tracking and the speed of a motor vehicle situation of change initiation point that whether blocks up on road, it specifically comprises:
S21: whether the speed that judges tracked rolling stock is consistent, enters step S22 if inconsistent, if unanimously enter step S23;
S22: the second speed of obtaining First Speed and L rice, the front vehicle of current location vehicle, the difference that judges second speed and First Speed be whether on the occasion of and be greater than velocity contrast threshold value, if judge after congestion in road and current location cause point as blocking up and enter step S3, otherwise return to step S1;
S23: judge that whether car speed is all lower than threshold speed, if judge congestion in road but be not to block up after causing point to enter step S24, otherwise return to step S1;
S24: the moment that shows block up section and the appearance of blocking up by electronic chart;
S3: gathering blocks up causes the image of some region, comprises and cause the information of vehicles blocking up in this image;
S4: by electronic chart show block up cause point position, block up and cause the moment that point occurs and block up and cause the image of some region, cause the Image Acquisition reason of blocking up of some region according to blocking up.
7. radar tracking technology find fast the to block up method of the system that causes reason of utilizing according to claim 6, is characterized in that, in described step S22, also comprises the steps:
Set very first time threshold value, if the difference of second speed and First Speed be on the occasion of and exceed described very first time threshold value higher than velocity contrast threshold value and duration, judge that congestion in road and current location are as the initiation point that blocks up.
8. according to utilizing radar tracking technology find fast the to block up method of the system that causes reason described in claim 6 or 7, it is characterized in that, in described step S23, also comprise the steps:
Set the second time threshold, if car speed exceedes described the second time threshold lower than threshold speed and duration, judge it is congestion in road point section.
9. according to arbitrary described radar tracking technology find fast the to block up method of the system that causes reason of utilizing of claim 6-8, it is characterized in that:
In described step S22, described threshold speed=speed limit × N, wherein N is coefficient constant, and 0 < N≤0.5;
In described step S23, described velocity contrast threshold value=A × second speed, wherein A is coefficient constant and 0 < A≤0.5.
10. according to arbitrary described radar tracking technology find fast the to block up method of the system that causes reason of utilizing of claim 6-9, it is characterized in that, in described step S22,0 < L≤20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269880.2A CN104021673B (en) | 2014-06-17 | 2014-06-17 | Radar tracking technology is utilized to find fast to block up and cause the system and method for reason |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269880.2A CN104021673B (en) | 2014-06-17 | 2014-06-17 | Radar tracking technology is utilized to find fast to block up and cause the system and method for reason |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104021673A true CN104021673A (en) | 2014-09-03 |
| CN104021673B CN104021673B (en) | 2016-04-20 |
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| CN110515073B (en) * | 2019-08-19 | 2021-09-07 | 南京慧尔视智能科技有限公司 | Multi-radar cross-regional networking multi-target tracking identification method and device |
| CN110515073A (en) * | 2019-08-19 | 2019-11-29 | 南京慧尔视智能科技有限公司 | The trans-regional networking multiple target tracking recognition methods of more radars and device |
| CN111599169A (en) * | 2020-04-01 | 2020-08-28 | 广东中科臻恒信息技术有限公司 | Road side unit inspection method, equipment and computer readable storage medium |
| CN112435472A (en) * | 2020-11-12 | 2021-03-02 | 北京嘀嘀无限科技发展有限公司 | Congestion analysis method, device, equipment and storage medium |
| CN115063971A (en) * | 2022-04-29 | 2022-09-16 | 山东金宇信息科技集团有限公司 | Method, device and medium for managing and controlling vehicle congestion in tunnel |
| CN115063971B (en) * | 2022-04-29 | 2024-04-05 | 山东金宇信息科技集团有限公司 | Method, equipment and medium for managing and controlling vehicle congestion in tunnel |
| CN114755676A (en) * | 2022-06-16 | 2022-07-15 | 浙江宇视科技有限公司 | Radar vision cooperative target tracking method and system |
| CN115376311A (en) * | 2022-07-08 | 2022-11-22 | 济南瑞源智能城市开发有限公司 | Vehicle situation analysis method and device for tunnel |
| CN116704771A (en) * | 2023-06-21 | 2023-09-05 | 中咨数据有限公司 | Real-time positioning command processing system based on traffic information of congested road section |
| CN116704771B (en) * | 2023-06-21 | 2024-01-12 | 中咨数据有限公司 | Real-time positioning command processing system based on traffic information of congested road section |
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