CN102506823A - Differential GPS (global position system) traffic accident scene investigation system and investigation method thereof - Google Patents
Differential GPS (global position system) traffic accident scene investigation system and investigation method thereof Download PDFInfo
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Abstract
The invention discloses a differential GPS (global position system) traffic accident scene investigation system and a method thereof in the technical field of road traffic accident handling. The differential GPS traffic accident scene investigation system comprises a real-time kinematic phase differential subsystem, an electronic sketch acquisition device, a data processing subsystem and a drawing subsystem. The investigation method includes: determining a reference station erection point and erecting a reference station; acquiring pictures of traffic accident scenes by the electronic sketch acquisition device; opening the pictures as the electronic sketch, selecting to-be-investigated targets thereon to generate numbers and marks, erecting a mobile station, acquiring space position information of the to-be-investigated targets, enabling property information of the to-be-investigated targets to correspond to the space position information one by one; converting the acquired space position information by the data processing subsystem, transmitting the converted information and the original space position information to the drawing subsystem; and drawing plane graphs of the traffic accident scenes by the drawing subsystem. By the differential GPS traffic accident scene investigation system and the method thereof, speed and accuracy of traffic accident investigation are increased and traffic jams of roads are reduced.
Description
Technical field
The invention belongs to the Traffic Accident Disposing technical field, relate in particular to a kind of site survey of traffic accident system and exploration method thereof based on differential GPS.
Background technology
The road traffic development of China is very fast, and mileage in highway open to traffic and motor vehicles recoverable amount increase rapidly, and the working pressure of prevention and process traffic accidents is very big, and traffic control department is faced with stern challenge.The loss that traffic hazard causes comprises direct loss and indirect loss.Direct loss mainly come from the people life property loss.According to the related data statistics, from 2002, because traffic hazard about annual average dead 90,000 people of China, is hindered 480,000 people.Statistics with the Ministry of Public Security in 2008 is an example, and 265204 of road traffic accidents took place altogether in China in 2008,10.1 hundred million yuan of direct property losss.Because of traffic hazard causes 73484 people dead, there are 304919 people therefore injured.Traffic jam that indirect loss is caused when mainly coming from scene of the accident measurement and investigation and evidence collection and the secondary accident that causes thus.Research shows that the time of site survey of traffic accident shortens 1 minute, and the vehicle of delay will block up 4-5 minute less.
Yet; Domestic and international most of site survey of traffic accident is main with classic methods such as experience judgement, tape measuring, artificial drawing at present; Problems such as easy generation information omission and misjudgment, in case reconnoitre end, on-the-spot i.e. quilt is removed; If above problem takes place, can't carry out second extraction to field data.On the other hand, along with the growth of the Freeway Development and the magnitude of traffic flow, it is lower that traditional exploration method also exists work efficiency, forms the problem of blocking up easily.Therefore, traditional site survey of traffic accident method can't effectively satisfy the actual needs that the current scene of a traffic accident is reconnoitred processing fast.
Though have the precedent of using GPS at communication project in the world, yet domestic level still has gap, and price is higher.In recent years, along with the development of GPS technology, (Real-time kinematic, RTK) location technology is increasingly mature for Real-time and Dynamic carrier phase difference.RTK real-time three-dimensional bearing accuracy can reach centimetre-sized, has been widely applied in control survey, engineering survey, landform and the cadastral survey.Therefore we use more cheap RTK equipment; Adopt differential technique to obtain high-precision dot bit space information fast; Utilize " electronics sketch " fast recording point bit attribute, use drafting system drafting traffic accident scene diagram, realized the cheapness, simple and direct, accurate and efficient of site survey of traffic accident.
Summary of the invention
The objective of the invention is to, propose a kind of site survey of traffic accident system and exploration method thereof based on differential GPS, expensive, the complicated operation that exists in order to the site survey of traffic accident system that solves present use, problem such as waste time and energy.
To achieve these goals; Technical scheme provided by the invention is; A kind of site survey of traffic accident system based on differential GPS is characterized in that said system comprises that Real-time and Dynamic carrier phase difference molecular system, electronics sketch obtain equipment, data process subsystem and drawing subsystem;
Wherein, said Real-time and Dynamic carrier phase difference molecular system comprises base station and the movement station that is linked in sequence;
Said data process subsystem comprises data acquisition unit and data processing unit;
Said data acquisition unit comprises that image capture module, image import module and data acquisition module;
Said image capture module links to each other with data acquisition module;
Said image importing module is obtained equipment with the electronics sketch and is linked to each other;
Said image imports module and links to each other with data acquisition module;
Said data acquisition module links to each other with the movement station of Real-time and Dynamic carrier phase difference molecular system;
Said data processing unit comprises data importing module, distance calculation module and the data transmission module that is linked in sequence;
Said data importing module links to each other with data acquisition module;
Said data transmission module links to each other with the drawing subsystem.
Said data acquisition unit operates in the data recorder, and said data recorder adopts panel computer or PDA.
Said data processing unit operates in the computing machine, and said computing machine adopts notebook computer or desktop computer computing machine.
Said image importing module is obtained equipment with the electronics sketch and is linked to each other through wireless transmission method.
Said wireless transmission method is a bluetooth.
A kind of site survey of traffic accident method based on differential GPS is characterized in that said method comprises:
Step 1: confirm that according to the scene of a traffic accident situation base station sets up a little and set up base station;
Step 2: utilize the electronics sketch to obtain equipment and take the scene of a traffic accident, and the photo importing electronics sketch of taking is obtained in the equipment;
Step 3: in data process subsystem, the photo of taking is opened as the electronics sketch, selected target to be measured generates numbering and mark on the electronics sketch, with it as attribute information;
Step 4: set up movement station at tested point, measure and gather the spatial positional information that differential data obtains target to be measured;
Step 5: data process subsystem converts the spatial positional information that obtains to be prone to by the use of drawing subsystem data mode, and the spatial information after attribute information and the conversion is transferred to the drawing subsystem;
Step 6: the drawing subsystem utilizes spatial point position information to draw scene of a traffic accident planimetric map.
Said spatial positional information is specially the WGS84 terrestrial coordinate.
It specifically is to convert the WGS84 terrestrial coordinate into rectangular space coordinate, the distance under rectangular coordinate system in space between the calculation level position that said data process subsystem converts the spatial positional information that obtains to be prone to used by the drawing subsystem data mode; Also the WGS84 terrestrial coordinate is projected into the planimetric coordinates that planimetric coordinates provides a position.
The drawing subsystem runs on the Windows operating system of Microsoft; According to spatial positional information and attribute the symbol of drawing is accurately located with qualitative; Formation meets the traffic accident scene diagram of national regulation; And the preservation and the printout of realization scene photo, and have one-touch three-dimensional reconstruction function, realize the three-dimensional reconstruction of the scene of a traffic accident.
The present invention adopts the positional information of the carrier phase real time dynamic differential location technology recording traffic scene of the accident; Adopt the image information of the image processing techniques recording traffic scene of the accident; Utilize graphics module in image, to demarcate the key position point afterwards, realize the reproduction of the scene of a traffic accident.Whole traffic hazard is reconnoitred process fast, accurately, has reduced road traffic to greatest extent and has blocked up.
Description of drawings
Fig. 1 is based on the overall construction drawing of the site survey of traffic accident system of differential GPS;
Fig. 2 is based on first kind of structural drawing of the site survey of traffic accident system of differential GPS.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment is elaborated.Should be emphasized that following explanation only is exemplary, rather than in order to limit scope of the present invention and application thereof.
Embodiment
Fig. 1 is based on the structural drawing of the site survey of traffic accident system of differential GPS.Among Fig. 1, the site survey of traffic accident system based on differential GPS provided by the invention comprises that Real-time and Dynamic carrier phase difference molecular system, electronics sketch obtain equipment, data process subsystem and drawing subsystem.
Wherein, Real-time and Dynamic carrier phase difference molecular system comprises base station and movement station, is used for gathering the spatial information (being coordinate) of scene of a traffic accident element anchor point.
The electronics sketch obtains equipment and is used for the multi-angle shooting scene of a traffic accident, and it is used as the electronics sketch.This equipment can be the data recorder that disposes built-in camera, also can be other equipment with wireless transmission and camera function, like mobile phone, solves between external device and data recorder the transmission that realizes captured photo through Bluetooth technology simultaneously.
Data process subsystem comprises the data acquisition unit that operates on the data recorder and operates in the data processing unit on the desktop computer.
Data acquisition unit imports module by image capture module, image and data acquisition module is formed; Its purposes is to gather the scene of a traffic accident photo of multi-angle; Electronics sketch as the scene of the accident; On the electronics sketch, select live element, and the locus of using differential GPS to obtain the respective element anchor point, on the electronics sketch, attribute data and spatial position data are united.
Data processing unit is made up of data importing module, distance calculation module and data transmission module, and its purposes is the electronics sketch and some bit data that the loading data collecting unit is gathered, and the distance between the calculation level position also will put the position or distance sends to the drawing subsystem.
The purposes of drawing subsystem is to use the spatial information and the attribute information of the scene of a traffic accident element that data process subsystem provides, and draws traffic accident scene diagram, and can use the three-dimensional reconstruction function of this system, generates three-dimensional accident situ map.
Data acquisition unit operates on the data recorder, in data acquisition unit, and the camera on the image capture module control data recorder, floor image.It is that the image scene that external unit (digital camera or mobile phone) is taken is imported among the data acquisition unit that image imports module.External unit both can use the SD card to the data recorder images, also can use blue tooth wireless technology.Data acquisition module is one of nucleus module of this data acquisition unit.Compare traditional scene of the accident and reconnoitre mode, when record live element attribute information, need a large amount of literal of input, too much man-machine interaction, increased operation difficulty, reduced the efficient of data acquisition.Therefore; Data acquisition module of the present invention is designed to load easily the image of shooting; And can click the position of element to be measured on image, annotation numbering, the volume coordinate of record respective element; Obtain positions of elements information, also further guaranteed the corresponding one by one of scene of the accident elements position information and attribute information.Volume coordinate is to adopt the high precision WGS84 terrestrial coordinate of the movement station that the differential GPS technology obtains.
Data processing unit operates on the desktop computer, and in data processing unit, the data importing module imports to electronics sketch and the some bit data that data acquisition unit obtains in the data processing unit.Distance calculation module converts the WGS84 terrestrial coordinate that movement station obtains into rectangular space coordinate, the distance under rectangular coordinate system in space between the calculation level position.Convenient for follow-up drawing, this data processing unit also projects into the planimetric coordinates that planimetric coordinates provides a position with terrestrial coordinate.
Distance or coordinate result data that data transmission module can obtain GPS, and editor's attribute information sends to the drawing subsystem.
The drawing subsystem runs on the Windows operating system of Microsoft; According to spatial positional information and attribute the symbol of drawing is accurately located with qualitative; Formation meets the traffic accident scene diagram of national regulation; And the preservation and the printout of realization scene photo, and have one-touch three-dimensional reconstruction function, realize the three-dimensional reconstruction of the scene of a traffic accident.
Based on above-mentioned site survey of traffic accident system based on differential GPS, the process of using this system to carry out site survey of traffic accident roughly is (as shown in Figure 2): at first, confirm that according to the scene of a traffic accident situation base station sets up a little and set up base station; Take the scene of a traffic accident with data recorder or other photographic equipment again, and the photo of taking is imported data recorder with wireless transmission function; In data process subsystem, photo is opened as the electronics sketch, selected target to be measured generates numbering and mark on the electronics sketch; Movement station is erected at the enterprising row-coordinate collection of target to be measured; With giving the drawing subsystem with data transmission after the spatial information of all on-the-spot key elements and the attribute information finishing collecting; The drawing subsystem utilizes these data to draw scene of a traffic accident planimetric map, and realizes scene of the accident three-dimensional reconstruction.
The present invention adopts RTK technology combining image acquisition process technology, only needs a surveyor just can carry out the collection of data, attribute, and the attribute data of site inspection is recorded among the electronics sketch, and position data record is in data file.After measurement finished, the site clearing was reduced traffic jam to greatest extent rapidly.Total system is with low cost, and measuring accuracy is high, the sketch drafting cycle is short, easy and simple to handle, be easy to carry, and is obvious with respect to traditional site survey of traffic accident system advantage.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. the site survey of traffic accident system based on differential GPS is characterized in that said system comprises that Real-time and Dynamic carrier phase difference molecular system, electronics sketch obtain equipment, data process subsystem and drawing subsystem;
Wherein, said Real-time and Dynamic carrier phase difference molecular system comprises base station and the movement station that is linked in sequence;
Said data process subsystem comprises data acquisition unit and data processing unit;
Said data acquisition unit comprises that image capture module, image import module and data acquisition module;
Said image capture module links to each other with data acquisition module;
Said image importing module is obtained equipment with the electronics sketch and is linked to each other;
Said image imports module and links to each other with data acquisition module;
Said data acquisition module links to each other with the movement station of Real-time and Dynamic carrier phase difference molecular system;
Said data processing unit comprises data importing module, distance calculation module and the data transmission module that is linked in sequence;
Said data importing module links to each other with data acquisition module;
Said data transmission module links to each other with the drawing subsystem.
2. the site survey of traffic accident system based on differential GPS according to claim 1 is characterized in that said data acquisition unit operates in the data recorder, and said data recorder adopts panel computer or PDA.
3. the site survey of traffic accident system based on differential GPS according to claim 1 is characterized in that said data processing unit operates in the computing machine, and said computing machine adopts notebook computer or desktop computer computing machine.
4. according to claim 1,2 or 3 described site survey of traffic accident systems, it is characterized in that said image imports module and obtains equipment with the electronics sketch and link to each other through wireless transmission method based on differential GPS.
5. the site survey of traffic accident system based on differential GPS according to claim 4 is characterized in that said wireless transmission method is a bluetooth.
6. method of using the described system of claim 1 to realize site survey of traffic accident is characterized in that said method comprises:
Step 1: confirm that according to the scene of a traffic accident situation base station sets up a little and set up base station;
Step 2: utilize the electronics sketch to obtain equipment and take the scene of a traffic accident, and the photo importing electronics sketch of taking is obtained in the equipment;
Step 3: in data process subsystem, the photo of taking is opened as the electronics sketch, selected target to be measured generates numbering and mark on the electronics sketch, with it as attribute information;
Step 4: set up movement station at tested point, measure and gather the spatial positional information that differential data obtains target to be measured;
Step 5: data process subsystem converts the spatial positional information that obtains to be prone to by the use of drawing subsystem data mode, and the spatial information after attribute information and the conversion is transferred to the drawing subsystem;
Step 6: the drawing subsystem utilizes spatial point position information to draw scene of a traffic accident planimetric map.
7. method according to claim 6 is characterized in that said spatial positional information is specially the WGS84 terrestrial coordinate.
8. method according to claim 7; It is characterized in that said data process subsystem converts the spatial positional information that obtains to be prone to by the drawing subsystem uses data mode and specifically is; Convert the WGS84 terrestrial coordinate into rectangular space coordinate, the distance under rectangular coordinate system in space between the calculation level position; Also the WGS84 terrestrial coordinate is projected into the planimetric coordinates that planimetric coordinates provides a position.
9. method according to claim 6; The subsystem that it is characterized in that drawing runs on the Windows operating system of Microsoft; According to spatial positional information and attribute the symbol of drawing is accurately located with qualitative, form the traffic accident scene diagram that meets national regulation, and realize the preservation and the printout of scene photo; And have one-touch three-dimensional reconstruction function, realize the three-dimensional reconstruction of the scene of a traffic accident.
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Cited By (11)
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| CN104764441A (en) * | 2015-04-13 | 2015-07-08 | 公安部交通管理科学研究所 | Rapid calibration equipment and system for road traffic accident field measurement |
| CN105627993A (en) * | 2014-01-13 | 2016-06-01 | 陈强 | Experiment system based on traffic accident scene photography surveying principle |
| CN105848093A (en) * | 2016-06-14 | 2016-08-10 | 深圳市北斗时空科技有限公司 | Sub-meter big dipper precision positioning Bluetooth terminal |
| CN105869196A (en) * | 2016-04-05 | 2016-08-17 | 上海良相智能化工程有限公司 | Traffic road accident scene drawing system |
| CN108230420A (en) * | 2016-12-15 | 2018-06-29 | 千寻位置网络有限公司 | The drawing practice in place to be drawn |
| CN109211196A (en) * | 2017-07-07 | 2019-01-15 | 北京林业大学 | One kind putting down photographic apparatus photogrammetric technology method based on RTK laser |
| CN110853354A (en) * | 2019-11-19 | 2020-02-28 | 上海工程技术大学 | Road traffic depth acquisition system based on GPS |
| CN113470357A (en) * | 2021-06-30 | 2021-10-01 | 中国汽车工程研究院股份有限公司 | Road traffic accident information processing system and method |
| CN113627872A (en) * | 2021-07-21 | 2021-11-09 | 深圳市城市公共安全技术研究院有限公司 | Production safety accident scene investigation information acquisition system and method |
| CN113900131A (en) * | 2021-09-27 | 2022-01-07 | 江苏小疆环保工程有限公司 | Measuring instrument with coordinate conversion system |
| CN117848302A (en) * | 2024-03-07 | 2024-04-09 | 山东省物化探勘查院 | Real-time terrain intelligent mapping method and system |
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Cited By (15)
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| CN105627993A (en) * | 2014-01-13 | 2016-06-01 | 陈强 | Experiment system based on traffic accident scene photography surveying principle |
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| CN113627872A (en) * | 2021-07-21 | 2021-11-09 | 深圳市城市公共安全技术研究院有限公司 | Production safety accident scene investigation information acquisition system and method |
| CN113900131A (en) * | 2021-09-27 | 2022-01-07 | 江苏小疆环保工程有限公司 | Measuring instrument with coordinate conversion system |
| CN117848302A (en) * | 2024-03-07 | 2024-04-09 | 山东省物化探勘查院 | Real-time terrain intelligent mapping method and system |
| CN117848302B (en) * | 2024-03-07 | 2024-05-28 | 山东省物化探勘查院 | Real-time terrain intelligent mapping method and system |
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