CN1909014A - All-weather two camera shooting laser speed measuring testification apparatus - Google Patents
All-weather two camera shooting laser speed measuring testification apparatus Download PDFInfo
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- CN1909014A CN1909014A CN 200610035669 CN200610035669A CN1909014A CN 1909014 A CN1909014 A CN 1909014A CN 200610035669 CN200610035669 CN 200610035669 CN 200610035669 A CN200610035669 A CN 200610035669A CN 1909014 A CN1909014 A CN 1909014A
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Abstract
The disclosed all-weather dual-camera laser speed measuring and quoting device comprises: a laser speed velometer and a color digital camera both on one side of the case, and a controller connected with former pieces by wire, wherein the included angle between the velometer and camera is between 0deg and 0.075deg, the camera composes by a close-up digital camera and an overall digital camera arranged from upper to lower, and the velometer composes by a laser emitter and a receiver. This invention applies its controller to operate the cameras for fast and accurate images, and fit to all weather work.
Description
Technical field
The present invention relates to a kind of speed measuring equipment, in particular for the measuring equipment of portable type measuring Vehicle Speed, this equipment also can be used for being fixed on trackside and installs and uses.
Technical background
Because the quick growth of number of vehicles, because of Vehicle Speed exceeds casualty accident that safe range causes in continuous increase, caused huge casualties and property loss, therefore the travel speed to vehicle limits.For the violation driver is punished, the travel speed of effective supervision vehicle reduces the incidence of traffic hazard, need collect evidence to the vehicle speed measuring in travelling.
The normally used portable or portable evidence obtaining equipment of taking pictures of testing the speed mainly contains following two kinds:
1, use radar to come collection vehicle speed, radar obtains speed and carries out video capture then, its major defect is: if radar is in trackside work, its radar face angle is the 9-20 degree, deciding angle radar and road level angle is 27 degree-30 degree, basically shooting distance triggers vehicle and takes whether vehicle is same car if two above vehicles can't be judged when travelling side by side at 30-50 rice, just can't guarantee the uniqueness of collecting evidence.In addition since the effectively scope of testing the speed of ordinary radar be the 20-250 kilometer per hour, when detecting low vehicle speeds, lost efficacy.
2, laser velocimeter is in conjunction with the mode of simulating signal output video camera.This system has guaranteed the accurate of numerical value of testing the speed.But shortcoming is general simulating signal output carries out the conversion of analog to digital signal again by outside capture card, valid pixel can't solve sharpness problems about 400,000, and also can't obtain desirable shooting effect night.
Summary of the invention
The purpose of this invention is to provide a kind ofly test the speed accurately, round-the-clock two shooting laser velocimeters of integrated type structure are taken pictures proof equipment, by setting laser velocimeter scope and video camera imaging focus are overlapped, can accurately obtain speed of a motor vehicle numerical value, guarantee the uniqueness of gained data.
Technical solution of the present invention is: it is made up of the laser velocimeter, colorful digital video camera, the controller that are located in the cabinet, wherein laser velocimeter also links to each other with controller by lead respectively with the same side in cabinet, colorful digital position for video camera, and the angle between laser velocimeter and the colorful digital video camera axle center is greater than 0 degree but less than 0.075 degree; The colorful digital video camera is made up of feature digital camera and panorama digital camera that upper and lower settings and axial line are on the same vertical plane, laser velocimeter is made up of generating laser and laser pickoff that upper and lower settings and axial line are on the same vertical plane, and controller can receive the signal of laser velocimeter and control the panorama digital camera respectively and the feature digital camera is taken pictures in real time.
Record the vehicle speed value of driving vehicle by laser velocimeter, and signal is delivered in the controller, control colorful digital video camera is taken pictures, and obtains distant view photograph and closeup photograph clearly respectively, finishes the evidence obtaining process; By the angle between setting laser knotmeter and the colorful digital video camera, equipment is overlapped in test the speed scope and video camera imaging focus of working range inner laser, guarantee within 200 meters, to clap be survey, guarantee the uniqueness of evidence; The use digital camera is taken pictures, and the sharpness height can all weather operations; Equipment is installed in the cabinet, is easy to carry, convenient on-the-spot the setting.
As a kind of prioritization scheme, the angle between laser velocimeter and the colorful digital video camera axle center face is 0.03 degree～0.075 degree, can test the speed and coverage according to road present situation choose reasonable like this.
As a kind of prioritization scheme, the emission angle of described laser velocimeter is for being equal to or less than 0.17 degree, and Laser emission to 100 a meter scattering diameter has only 0.3 meter like this, has guaranteed that many vehicles mistake can not occur and survey when parallel.
As another kind of prioritization scheme, angle between feature digital camera and the panorama digital camera axle center is 0.022～0.036 degree, so also define the viewfinder range of video camera, make the closeup photograph of real-time shooting can be positioned at the middle part of distant view photograph, while and laser velocimeter scope overlap with one heart, guarantee the accuracy of collecting evidence.
Described feature digital camera and panorama digital camera are the above industrial digital video camera of at least 100 ten thousand pixels.
Described cabinet is provided with the display screen that connects controller, is convenient to field monitor.
Described controller comprises:
Be used to control laser velocimeter and carry out data acquisition, measurement numerical value that the comparison laser velocimeter transmits and inner preset value are also controlled the laser numerical value judge module that the panorama digital camera is clapped distant view photograph;
Be used for image reception cache module with the closeup photograph of first-in first-out slip storage feature digital camera shooting;
The laser velocimeter data that the laser numerical value judge module that is used for receiving transmits are superimposed on image respectively and receive logic judgment module on the distant view photograph that closeup photograph that cache module transmits and panorama digital camera transmit;
Be used for the memory module that the stored logic judge module transmits picture;
Wherein laser numerical value judge module can be judged the laser velocimeter data that transmit according to the internal preset value, and can carry out following action simultaneously:
Control panorama digital camera carries out panorama to be captured, and passes the distant view photograph of capturing back logic judgment module;
The notification logic judge module receives the overspeed of vehicle numeric data that laser numerical value judge module transmits; The control chart picture receives cache module and stops slip buffer, and last group buffer memory picture is delivered to logic judgment module.
As a kind of optimal way, described controller also is provided with the car plate analysis module that is used for discriminance analysis memory module bust shot photo car plate.
In order to obtain the desirable picture under night, the misty rain weather, round-the-clock two shooting laser velocimeter takes pictures that proof equipment also is provided with can be by the light filling lamp of laser numerical value judge module control, under the situation that does not influence driver's sight line, cooperate video camera to monitor road vehicles in real time.
Described feature digital camera is provided with infrared lamp, can provide illumination more clearly at night like this, can also avoid the equipment of testing the speed to be found in advance simultaneously.
A kind of bearing calibration of using proof equipment of the present invention to test the speed, it may further comprise the steps:
(1), sets the distance value a that tests the speed;
(2), laser measuring equipment is to the vertical range b between the institute measuring car road;
(3), laser numerical value judge module carries out COS θ angle calculation;
(4), if the θ angle smaller or equal to 5 degree, laser numerical value judge module control laser velocimeter directly tests the speed; If the θ angle is greater than 5 degree, laser numerical value judge module is according to following algorithm computation COS θ value:
Cos θ=(a
2-b
2)
1/2/ a, and the measuring speed that laser velocimeter is transmitted obtains the true velocity value of institute's survey vehicle divided by COS θ value, again with the preset value of inside relatively.
The common equipment of testing the speed is placed on the both sides of road, it tests the speed and has an angle between laser and the vehicle heading, there is the angle influence between the data of being surveyed and the true speed of a motor vehicle like this, the speed that instrument is surveyed is forever less than actual vehicle speed, and selected difference test the speed apart from the time, angle also can change, and surveys the true and reliable of data in order to guarantee, can eliminate the influence of angle to testing the speed by above-mentioned bearing calibration, that guarantees to measure is accurately just.
Advantage of the present invention is: use the above industrial digital video camera of 1,000,000 pixels, overlap in conjunction with laser velocimeter and by regulating laser velocimeter scope and video camera imaging focus, can obtain speed of a motor vehicle numerical value fast, obtain feature and panoramic picture simultaneously, the uniqueness that assurance is tested the speed, adequacy, incorporate structure is convenient to install and is carried, and can realize round-the-clock non-stop run.
Description of drawings
Accompanying drawing 1 is the perspective view of the embodiment of the invention;
Accompanying drawing 2 is the right view of the embodiment of the invention;
Accompanying drawing 3 is laser velocimeter scope of the present invention and coverage ratio view;
Accompanying drawing 4 is a workflow diagram of the present invention;
Accompanying drawing 5 is laser numerical value judge module fundamental diagram among the present invention;
Accompanying drawing 6 is logic judgment module fundamental diagram among the present invention;
Accompanying drawing 7 receives the cache module fundamental diagram for image among the present invention;
Accompanying drawing 8 is bearing calibration synoptic diagram among the present invention;
Accompanying drawing 9 is COS velocity correction algorithm principle figure among the present invention;
1, cabinet, 2, generating laser, 3, laser pickoff, 4, the feature digital camera, 5, the panorama digital camera, 6, controller, 7, display.
Embodiment
Embodiment: as illustrated in fig. 1 and 2, round-the-clock two shooting laser velocimeter proof equipment of taking pictures, by the laser velocimeter that is located in the cabinet 1, the colorful digital video camera, controller 6 is formed, wherein laser velocimeter also links to each other with controller by lead respectively with the same side in cabinet, colorful digital position for video camera, angle between laser velocimeter and the colorful digital video camera axle center is 0.03～0.075 degree in working range, distance is A between setting laser knotmeter and the colorful digital video camera axle center, distance between laser velocimeter and testee is B, ask arctg θ=A/B, look into value with the corresponding θ of arctg θ according to table of trigonometric function, can determine the relation of angle and distance that can clear evidence obtaining between digital camera and the laser velocimeter, see Table 1:
Table 1
| Angle theta (degree) | Distance (rice) |
| 0.075 | 80 |
| 0.06 | 100 |
| 0.05 | 120 |
| 0.043 | 140 |
| 0.0373 | 160 |
| 0.0334 | 180 |
| 0.030 | 200 |
Because laser velocimeter needs straight line to carry out, and road impossible a tunnel keeps its straight state usually, so evidence obtaining distance usually is no more than 200 meters, the angle in the present embodiment between laser velocimeter and the colorful digital video camera axle center is 0.06 degree, i.e. evidence obtaining distance is 100 meters.
The colorful digital video camera is made up of feature digital camera 4 and panorama digital camera 5 that upper and lower settings and axial line are on the same vertical plane, laser velocimeter is made up of generating laser 2 and laser pickoff 3 that upper and lower settings and axial line are on the same vertical plane, and controller 6 can be accepted the signal of laser velocimeter and take pictures in real time by IEEE1394 (live wire) control feature digital camera 4 and panorama digital camera 5 respectively.The emission angle of described laser velocimeter is that Laser emission to 100 a meter scattering diameter has only 0.3 meter like this smaller or equal to 0.17 degree (3 milliradian), has guaranteed that many vehicles mistake can not occur and survey when parallel.
Feature digital camera 4 and panorama digital camera 5 are the above industrial digital video camera of at least 100 ten thousand pixels, angle between the two axle center is 0.022～0.036 degree in working range, so also define the viewfinder range of video camera, make the closeup photograph of real-time shooting can be positioned at the middle part of distant view photograph, while and laser velocimeter scope overlap in working range with one heart, guarantee the accuracy of collecting evidence.Cabinet 1 opposite side is provided with the display screen 7 that connects controller 6, is convenient to field monitor.
Described controller 6 comprises:
Be used to control laser velocimeter and carry out data acquisition, numerical value that the comparison laser velocimeter transmits and inner preset value are also controlled the laser numerical value judge module that the panorama digital camera is clapped distant view photograph;
The image of storing the closeup photograph of feature digital camera shooting with the first-in first-out slip receives cache module;
The laser velocimeter data that the laser numerical value judge module that is used for receiving transmits are superimposed on image respectively and receive logic judgment module on the distant view photograph that closeup photograph that cache module transmits and panorama digital camera transmit;
Be used for the memory module that the stored logic judge module transmits picture;
Wherein laser numerical value judge module can be judged the laser velocimeter data that transmit according to the internal preset value, and can carry out following action simultaneously:
Control panorama digital camera carries out panorama to be captured, and passes the distant view photograph of capturing back logic judgment module;
The notification logic judge module receives the overspeed of vehicle numeric data that laser numerical value judge module transmits; The control chart picture receives cache module and stops slip buffer, and last group buffer memory picture is delivered to logic judgment module;
The car plate analysis module that is used for discriminance analysis memory module bust shot photo car plate.
At night, the infrared lamp that the feature digital camera is provided with is worked always, guarantees the sharpness of closeup photograph, and laser numerical value judge module can be controlled the light filling lamp and carry out glistening when panorama is captured at the panorama digital camera.
Shown in Fig. 3-7, these round-the-clock two shooting laser velocimeters are taken pictures and are put to the proof equipment running process and be:
One, generating laser 2, laser pickoff 3 and feature digital camera 4 are in the lasting work, 5 of panorama digital cameras only in laser detection to exceeding the speed limit or pictures taken during slow data.
Two, image receives 4 buffer areas of definition in the cache module, be that per second control feature digital camera 4 is taken 4 two field pictures, the mode slip buffer feature digital camera 4 captured pictures that get off with FIFO (first in first out), the picture that guarantees 4 buffer areas is 4 up-to-date frame pictures, logic judgment module has defined time value for each frame picture simultaneously, has write down the moment (is unit with the millisecond) that every frame picture produces.
Three, laser numerical value judge module velocity amplitude and the distance value passed back of detection laser constantly, when the data that meet setting value produced, laser numerical value judge module sent three group commands:
A, excite panorama digital camera 5 to take a frame picture by output 5V high level pulse;
B, the time that laser data and this data are produced reach logic judgment module;
C, communicate commands to image and receive cache module, suspend image buffer storage.
Four, logic judgment module is extracted the time value of laser data, and deduct 300 milliseconds of response times of laser, with this time be the time value of (feature digital camera 4 is captured) 4 frame pictures in the standard contrast buffer area, get time value and differ minimum picture for putting to the proof picture.Extract panorama digital camera 5 (large scene) shot picture simultaneously.
Five, logic judgment module is superimposed on two frame pictures respectively with data such as time, speed, distance, monitoring places.
Six, memory module picture.
Seven, the car plate analysis module to extract to such an extent that feature digital camera 4 (little scene) picture carries out picture analyzing, extract license board information.
Eight,, write database as time, speed, distance, monitoring place, license board information etc. with the various information of being obtained.
Nine, beginning is measured next time.
When ten, system finishing moves, preserve the value of setting of this time operation, as the video camera value of setting, hypervelocity value, measuring distance interval etc.
The common equipment of testing the speed is placed on the both sides of road, it tests the speed and has an angle between laser and the vehicle heading, there is the angle influence between the data of being surveyed and the true speed of a motor vehicle like this, the speed that instrument is surveyed is forever less than actual vehicle speed, and selected difference test the speed apart from the time, angle also can change, and sees also table 2:
The table of comparisons between table 2 COS angle and the actual measured value
| COS angle (degree) | Real measuring speed (Km/h) | |||||||||||
| 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 150 | |
| 0 | 30.00 | 40.00 | 50.00 | 60.00 | 70.00 | 80.00 | 90.00 | 100.00 | 110.00 | 120.00 | 130.00 | 150.00 |
| 1 | 29.99 | 39.99 | 49.99 | 59.99 | 69.99 | 79.99 | 89.99 | 99.98 | 109.98 | 119.98 | 129.98 | 149.98 |
| 3 | 29.96 | 39.94 | 49.93 | 59.92 | 69.90 | 79.89 | 89.88 | 99.86 | 109.85 | 119.84 | 129.82 | 149.79 |
| 5 | 29.89 | 39.85 | 49.81 | 59.77 | 69.73 | 79.70 | 89.66 | 99.62 | 109.58 | 119.54 | 129.50 | 149.43 |
| 10 | 29.54 | 39.39 | 49.24 | 59.09 | 68.94 | 78.78 | 88.63 | 98.48 | 108.33 | 118.18 | 128.02 | 147.72 |
| 15 | 28.98 | 38.64 | 48.30 | 57.96 | 67.62 | 77.27 | 86.93 | 96.59 | 106.25 | 115.91 | 125.57 | 144.89 |
| 20 | 28.19 | 37.59 | 46.98 | 56.38 | 65.78 | 75.18 | 84.57 | 93.97 | 103.37 | 112.76 | 122.16 | 140.95 |
| 45 | 21.21 | 28.28 | 35.36 | 42.43 | 49.50 | 56.57 | 63.64 | 70.71 | 77.78 | 84.85 | 91.92 | 106.07 |
| 90 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 | 00.00 |
Survey the true and reliable of data in order to guarantee, according to road track quantity difference, the operating distance of laser velocimeter and the distance of tested vehicle must guarantee the operation program of COS angle≤5 degree of laser and measured target.The at present domestic existing equipment that utilizes the laser image data is not all emphasized and limit laser will guarantee that COS angle≤5 degree carry out the measurement of the speed of a motor vehicle.Therefore for guaranteeing hypervelocity is reached measure at a slow speed accurately just, loaded bearing calibration, in the every replacing single job of equipment place, equipment must be qualified through system's COS angular detection, the evidence obtaining work of can testing the speed, if the COS angle of this moment does not satisfy≤5 degree, then can make computing machine correction computing on the program.
Referring to Fig. 8 and 9, this bearing calibration may further comprise the steps:
(1), sets the distance value a that tests the speed;
(2), laser measuring equipment is to the vertical range b between the institute measuring car road;
(3), laser numerical value judge module carries out COS θ angle calculation;
(4), if the θ angle smaller or equal to 5 degree, laser numerical value judge module control laser velocimeter directly tests the speed; If the θ angle is greater than 5 degree, laser numerical value judge module is according to following algorithm computation COS θ value:
Cos θ=(a
2-b
2)
1/2/ a, and the measuring speed that laser velocimeter is transmitted obtains the true velocity value of institute's survey vehicle divided by COS θ value, again with the preset value of inside relatively.
Claims (10)
1, a kind of all-weather two camera shooting laser speed measuring testification apparatus, it is characterized in that: it is made up of the laser velocimeter, colorful digital video camera, the controller that are located in the cabinet, wherein laser velocimeter also links to each other with controller by lead respectively with the same side in cabinet, colorful digital position for video camera, and the angle between laser velocimeter and the colorful digital video camera axle center face is greater than 0 degree but smaller or equal to 0.075 degree; The colorful digital video camera is made up of feature digital camera and panorama digital camera that upper and lower settings and axial line are on the same vertical plane, laser velocimeter is made up of generating laser and laser pickoff that upper and lower settings and axial line are on the same vertical plane, and controller can receive the signal of laser velocimeter and control the feature digital camera and the panorama digital camera is taken pictures.
2, all-weather two camera shooting laser speed measuring testification apparatus according to claim 1 is characterized in that: the angle between laser velocimeter and the colorful digital video camera axle center face is 0.03 degree～0.075 degree.
3, all-weather two camera shooting laser speed measuring testification apparatus according to claim 1 is characterized in that: the emission angle of described laser velocimeter is for being equal to or less than 0.17 degree.
4, all-weather two camera shooting laser speed measuring testification apparatus according to claim 1 is characterized in that: the angle between described feature digital camera and the described panorama digital camera axle center is 0.022～0.036 degree.
5, all-weather two camera shooting laser speed measuring testification apparatus according to claim 1 is characterized in that: described feature digital camera and panorama digital camera are the above industrial digital video camera of at least 100 ten thousand pixels.
6, all-weather two camera shooting laser speed measuring testification apparatus according to claim 1 is characterized in that: described cabinet is provided with the display screen that connects controller.
7, according to claim 1,2,3,4 or 5 described all-weather two camera shooting laser speed measuring testification apparatus, it is characterized in that: described controller comprises:
Be used to control laser velocimeter and carry out data acquisition, measurement numerical value that the comparison laser velocimeter transmits and inner preset value are also controlled the laser numerical value judge module that the panorama digital camera is clapped distant view photograph; Be used for image reception cache module with the closeup photograph of first-in first-out slip storage feature digital camera shooting;
The laser velocimeter data that the laser numerical value judge module that is used for receiving transmits are superimposed on image respectively and receive logic judgment module on the distant view photograph that closeup photograph that cache module transmits and panorama digital camera transmit;
Be used for the memory module that the stored logic judge module transmits picture;
Wherein laser numerical value judge module can be judged the laser velocimeter data that transmit according to the internal preset value, and can carry out following action simultaneously:
Control panorama digital camera carries out panorama to be captured, and passes the distant view photograph of capturing back logic judgment module; The notification logic judge module receives the car speed that laser numerical value judge module transmits and tests the speed apart from time data; The control chart picture receives cache module and stops slip buffer, and last group buffer memory picture is delivered to logic judgment module.
8, all-weather two camera shooting laser speed measuring testification apparatus according to claim 6 is characterized in that: described controller also is provided with the car plate analysis module that is used for discriminance analysis memory module bust shot photo car plate.
9, all-weather two camera shooting laser speed measuring testification apparatus according to claim 6 is characterized in that: it also is provided with can be by the light filling lamp of laser numerical value judge module control, and described feature digital camera is provided with infrared lamp.
10, the described all-weather two camera shooting laser speed measuring testification apparatus of a kind of use claim 6 bearing calibration of testing the speed is characterized in that:
(1), sets the distance value a that tests the speed;
(2), the laser vertical measuring equipment is to the distance b between the institute measuring car road;
(3), laser numerical value judge module carries out COS θ angle calculation;
(4), if the θ angle smaller or equal to 5 degree, laser numerical value judge module control laser velocimeter directly tests the speed; If the θ angle is greater than 5 degree, laser numerical value judge module is according to following algorithm computation COS θ value:
Cos θ=(a
2-b
2)
1/2/ a, and the measuring speed that laser velocimeter is transmitted obtains the true velocity value of institute's survey vehicle divided by COS θ value, again with the preset value of inside relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610035669XA CN100421456C (en) | 2006-05-29 | 2006-05-29 | All-weather two camera shooting laser speed measuring testification apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610035669XA CN100421456C (en) | 2006-05-29 | 2006-05-29 | All-weather two camera shooting laser speed measuring testification apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1909014A true CN1909014A (en) | 2007-02-07 |
| CN100421456C CN100421456C (en) | 2008-09-24 |
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ID=37700118
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610035669XA Expired - Fee Related CN100421456C (en) | 2006-05-29 | 2006-05-29 | All-weather two camera shooting laser speed measuring testification apparatus |
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| CN (1) | CN100421456C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063795A (en) * | 2010-12-27 | 2011-05-18 | 交通运输部公路科学研究所 | System, method and device for acquiring information of intensive traffic flow |
| CN103888655A (en) * | 2012-12-21 | 2014-06-25 | 联想(北京)有限公司 | Photographing method and electronic equipment |
| CN104574978A (en) * | 2014-11-21 | 2015-04-29 | 深圳市金溢科技股份有限公司 | Vehicle capturing method, control equipment and system |
| CN110444026A (en) * | 2019-08-06 | 2019-11-12 | 北京万集科技股份有限公司 | The triggering grasp shoot method and system of vehicle |
| CN111613067A (en) * | 2020-04-24 | 2020-09-01 | 芜湖职业技术学院 | Automobile safety belt monitoring and speed control system and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2968473B2 (en) * | 1996-02-06 | 1999-10-25 | 日本無線株式会社 | Speed monitoring recorder |
| US6681195B1 (en) * | 2000-03-22 | 2004-01-20 | Laser Technology, Inc. | Compact speed measurement system with onsite digital image capture, processing, and portable display |
| CN2528021Y (en) * | 2002-03-05 | 2002-12-25 | 牛岗 | Laser speedometer for overspeed driving car |
| CN2658868Y (en) * | 2003-11-20 | 2004-11-24 | 郝振军 | Road vehicle speed monitoring device |
| CN1725266A (en) * | 2004-07-21 | 2006-01-25 | 上海高德威智能交通系统有限公司 | Vehicle intelligent monitoring recording syste mand method based on video trigger and speed measuring |
| CN2927213Y (en) * | 2006-05-29 | 2007-07-25 | 李佳欣 | All-weather double-camera laser speed-measuring evidential equipment |
-
2006
- 2006-05-29 CN CNB200610035669XA patent/CN100421456C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063795A (en) * | 2010-12-27 | 2011-05-18 | 交通运输部公路科学研究所 | System, method and device for acquiring information of intensive traffic flow |
| CN102063795B (en) * | 2010-12-27 | 2015-01-21 | 交通运输部公路科学研究所 | System, method and device for acquiring information of intensive traffic flow |
| CN103888655A (en) * | 2012-12-21 | 2014-06-25 | 联想(北京)有限公司 | Photographing method and electronic equipment |
| CN103888655B (en) * | 2012-12-21 | 2017-07-25 | 联想(北京)有限公司 | A kind of photographic method and electronic equipment |
| CN104574978A (en) * | 2014-11-21 | 2015-04-29 | 深圳市金溢科技股份有限公司 | Vehicle capturing method, control equipment and system |
| CN110444026A (en) * | 2019-08-06 | 2019-11-12 | 北京万集科技股份有限公司 | The triggering grasp shoot method and system of vehicle |
| CN110444026B (en) * | 2019-08-06 | 2021-07-09 | 北京万集科技股份有限公司 | Triggering snapshot method and system for vehicle |
| CN111613067A (en) * | 2020-04-24 | 2020-09-01 | 芜湖职业技术学院 | Automobile safety belt monitoring and speed control system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100421456C (en) | 2008-09-24 |
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