CN102506823B - Traffic accident scene investigation method of differential GPS (global position system) - Google Patents
Traffic accident scene investigation method of differential GPS (global position system) 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 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 Transportation Development of China is very fast, and mileage in highway open to traffic and motor vehicles recoverable amount increase rapidly, and the working pressure Hen great ， traffic control department of prevention and processing traffic hazard is faced with stern challenge.The loss that traffic hazard causes comprises direct loss and indirect loss.Direct loss mainly come from people life property loss.According to related data statistics, from 2002, because traffic hazard, the dead 90,000 people left and right of the every annual of China, hindered 480,000 people.The statistics of the Ministry of Public Security in 2008 of take is example, and within 2008,265204 of road traffic accidents occur altogether in China, 10.1 hundred million yuan of direct property losss.Because traffic hazard causes 73484 people dead, there are 304919 people therefore injured.Indirect loss mainly comes from the traffic jam causing when the scene of the accident is measured and investigates and collects evidence and the secondary accident causing thus.Research shows, the time shorten of site survey of traffic accident 1 minute, the vehicle of the delay 4-5 minute that will block up less.
Yet, domestic and international most of site survey of traffic accident be take the classic methods such as micro-judgment, tape measuring, Man Graphics as main at present, the problems such as easy generation information omission and misjudgment, once reconnoitre end, scene is removed, if there is above problem, cannot carry out second extraction to field data.On the other hand, along with the development of highway and the growth of the magnitude of traffic flow, it is lower that traditional exploration method also exists work efficiency, easily forms the problem of blocking up.Therefore, traditional site survey of traffic accident method cannot effectively meet the actual needs that current scene of a traffic accident fast prospecting is processed.
Although have in the world the precedent of using GPS at communication project, yet domestic level still has gap, and price is higher.In recent years, along with the development of GPS technology, dynamic carrier phase difference (Real-time kinematic, RTK) location technology is increasingly mature in real time.RTK real-time three-dimensional positioning precision can reach centimetre-sized, has been widely applied in control survey, engineering survey, landform and cadastral survey.Therefore we use more cheap RTK equipment, adopt differential technique quick obtaining high-precision dot bit space information, utilize " electronic 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 object of the invention is to, propose a kind of site survey of traffic accident system and exploration method thereof based on differential GPS, in order to the problem such as solve somewhat expensive, complicated operation that the site survey of traffic accident system of current use exists, waste time and energy.
To achieve these goals, technical scheme provided by the invention is, a site survey of traffic accident system based on differential GPS, is characterized in that described system comprises that real-time dynamic carrier phase difference subsystem, electronic sketch obtain equipment, data process subsystem and drawing subsystem;
Wherein, described real-time dynamic carrier phase difference subsystem comprises base station and the movement station being linked in sequence;
Described data process subsystem comprises data acquisition unit and data processing unit;
Described data acquisition unit comprises that image capture module, image import module and data acquisition module;
Described image capture module is connected with data acquisition module;
Described image importing module is obtained equipment with electronic sketch and is connected;
Described image imports module and is connected with data acquisition module;
Described data acquisition module is connected with the movement station of real-time dynamic carrier phase difference subsystem;
Described data processing unit comprises data importing module, distance calculation module and the data transmission module being linked in sequence;
Described data importing module is connected with data acquisition module;
Described data transmission module is connected with drawing subsystem.
Described data acquisition unit operates in data recorder, and described data recorder adopts panel computer or PDA.
Described data processing unit operates in computing machine, and described computing machine adopts notebook computer or desktop computer computing machine.
Described image importing module is obtained equipment with electronic sketch and is connected by wireless transmission method.
Described wireless transmission method is bluetooth.
A site survey of traffic accident method based on differential GPS, is characterized in that described method comprises:
Step 1: determine according to scene of a traffic accident situation that base station sets up and put and set up base station;
Step 2: utilize electronic sketch to obtain equipment and take the scene of a traffic accident, and the photo importing electronic sketch of shooting is obtained in equipment;
Step 3: in data process subsystem, the photo of shooting is opened as electronic sketch, selected target to be measured, generates numbering and mark, using it as attribute information on electronic sketch;
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 obtaining to be easily drawn the data mode that subsystem is used to, and the spatial information after attribute information and conversion is transferred to drawing subsystem;
Step 6: drawing subsystem utilizes point position in space information to draw scene of a traffic accident planimetric map.
Described spatial positional information is specially WGS84 terrestrial coordinate.
Described data process subsystem converts the spatial positional information obtaining to be easily drawn data mode that subsystem uses specifically to, WGS84 terrestrial coordinate is converted to rectangular space coordinate, the distance under rectangular coordinate system in space between calculation level position; Also WGS84 terrestrial coordinate is projected into the planimetric coordinates that planimetric coordinates provides a position.
Drawing subsystem runs on the Windows operating system of Microsoft, according to spatial positional information and attribute, the symbol of drawing is carried out to accurately location and qualitative, formation meets the traffic accident scene diagram of national regulation, and realize preservation and the printout of scene photo, and there is 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 afterwards graphics module in image, to demarcate key position point, realize the reproduction of the scene of a traffic accident.Whole traffic hazard is reconnoitred process fast, accurately, has reduced to greatest extent road traffic and has blocked up.
Accompanying drawing explanation
Fig. 1 is the overall construction drawing of the site survey of traffic accident system based on differential GPS;
Fig. 2 is the first structural drawing of the site survey of traffic accident system based on differential GPS.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment is elaborated.Should be emphasized that, following explanation is only exemplary, rather than in order to limit the scope of the invention and to apply.
Embodiment
Fig. 1 is the structural drawing of the site survey of traffic accident system based on differential GPS.In Fig. 1, the site survey of traffic accident system based on differential GPS provided by the invention, comprises that real-time dynamic carrier phase difference subsystem, electronic sketch obtain equipment, data process subsystem and drawing subsystem.
Wherein, dynamic carrier phase difference subsystem comprises base station and movement station in real time, is used for gathering the spatial information (being coordinate) of scene of a traffic accident element anchor point.
Electronic sketch obtains equipment for the multi-angled shooting scene of a traffic accident, and it is used as electronic sketch.This equipment can be the data recorder that disposes built-in camera, can be also other equipment with wireless transmission and camera function, as mobile phone, solves the transmission that realizes captured photo between external device and data recorder by Bluetooth technology simultaneously.
Data process subsystem comprises the data acquisition unit operating on data recorder and operates in the data processing unit on desktop computer.
Data acquisition unit imports module by image capture module, image and data acquisition module forms, its purposes is the scene of a traffic accident photo that gathers multi-angle, electronic sketch as the scene of the accident, on electronic sketch, select live element, and the locus of using differential GPS to obtain respective element anchor point, on electronic sketch, attribute data and spatial position data are united.
Data processing unit is comprised of data importing module, distance calculation module and data transmission module, and its purposes is to load electronic sketch and the some bit data that data acquisition unit gathers, and the distance between calculation level position also sends to drawing subsystem by a position or distance.
The purposes of drawing subsystem is spatial information and the attribute information of the scene of a traffic accident element that provides of usage data processing subsystem, draws traffic accident scene diagram, and can use the three-dimensional reconstruction function of this system, the accident situ map of generating three-dimensional.
Data acquisition unit operates on data recorder, and in data acquisition unit, image capture module is controlled the camera on data recorder, floor image.It is that the image scene that external unit (digital camera or mobile phone) is taken imports among data acquisition unit that image imports module.External unit both can be used SD card to data recorder transmitting image, also can use blue tooth wireless technology.Data acquisition module is one of nucleus module of this data acquisition unit.Compare traditional Accident scene survey mode, when recording live element attribute information, need to input a large amount of words, too much man-machine interaction, increased operation difficulty, reduced the efficiency 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, record the volume coordinate of respective element, obtain the positional information of element, also further guaranteed the corresponding one by one of scene of the accident elements position information and attribute information.Volume coordinate is the high precision WGS84 terrestrial coordinate that adopts the movement station that Differential GPS Technology obtains.
Data processing unit operates on desktop computer, and in data processing unit, the electronic sketch that data importing module obtains data acquisition unit imports in data processing unit with some bit data.The WGS84 terrestrial coordinate that distance calculation module is obtained movement station is converted to rectangular space coordinate, the distance under rectangular coordinate system in space between calculation level position.Convenient for follow-up drawing, this data processing unit also projects into terrestrial coordinate the planimetric coordinates that planimetric coordinates provides a position.
Distance or coordinate result data that data transmission module can obtain GPS, and editor's attribute information sends to drawing subsystem.
Drawing subsystem runs on the Windows operating system of Microsoft, according to spatial positional information and attribute, the symbol of drawing is carried out to accurately location and qualitative, formation meets the traffic accident scene diagram of national regulation, and realize preservation and the printout of scene photo, and there is one-touch three-dimensional reconstruction function, realize the three-dimensional reconstruction of the scene of a traffic accident.
Based on the 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 is roughly (as shown in Figure 2): first, determine that base station sets up put and set up base station according to scene of a traffic accident situation; With data recorder or other photographic equipment with wireless transmission function, take the scene of a traffic accident again, and the photo of taking is imported to data recorder; In data process subsystem, photo is opened as electronic sketch, on electronic sketch, selected target to be measured, generates numbering and mark; Movement station is erected to the enterprising row-coordinate collection of target to be measured; To after the spatial information of all on-the-spot key elements and attribute information collection, transfer data to drawing subsystem; 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 and process, only needs a surveyor just can carry out the collection of data, attribute, and the attribute data of site inspection is recorded among electronic sketch, and position data record is in data file.Measure complete after, site clearing, reduces traffic jam to greatest extent rapidly.Whole 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, obvious with respect to traditional site survey of traffic accident system advantage.
The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in 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 (4)
1. the site survey of traffic accident system of use based on differential GPS realizes a method for site survey of traffic accident, and described system comprises that real-time dynamic carrier phase difference subsystem, electronic sketch obtain equipment, data process subsystem and drawing subsystem, wherein, dynamic carrier phase difference subsystem comprises base station and the movement station being linked in sequence in real time, data process subsystem comprises data acquisition unit and data processing unit, data acquisition unit comprises image capture module, image imports module and data acquisition module, image capture module is connected with data acquisition module, image importing module is obtained equipment with electronic sketch and is connected, image imports module and is connected with data acquisition module, data acquisition module is connected with the movement station of real-time dynamic carrier phase difference subsystem, data processing unit comprises the data importing module being linked in sequence, distance calculation module and data transmission module, data importing module is connected with data acquisition module, data transmission module is connected with drawing subsystem, it is characterized in that described method comprises:
Step 1: determine according to scene of a traffic accident situation that base station sets up and put and set up base station;
Step 2: utilize electronic sketch to obtain equipment and take the scene of a traffic accident, and the photo importing electronic sketch of shooting is obtained in equipment;
Step 3: in data process subsystem, the photo of shooting is opened as electronic sketch, selected target to be measured, generates numbering and mark, using it as attribute information on electronic sketch;
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 obtaining can be drawn the data mode that subsystem is used to, and the spatial positional information after attribute information and conversion is transferred to drawing subsystem;
Step 6: drawing subsystem utilizes spatial positional information to draw scene of a traffic accident planimetric map.
2. method according to claim 1, is characterized in that described spatial positional information is specially WGS84 terrestrial coordinate.
3. method according to claim 2, it is characterized in that described data process subsystem converts the spatial positional information obtaining can be drawn data mode that subsystem uses specifically to, WGS84 terrestrial coordinate is converted to rectangular space coordinate, the distance under rectangular coordinate system in space between calculation level position; Also WGS84 terrestrial coordinate is projected into the planimetric coordinates that planimetric coordinates provides a position.
4. method according to claim 1, 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 carried out to accurately location and qualitative, formation meets the traffic accident scene diagram of national regulation, and realize preservation and the printout of scene photo, and there is one-touch three-dimensional reconstruction function, realize the three-dimensional reconstruction of the scene of a traffic accident.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103743388B (en) * | 2014-01-13 | 2016-05-18 | 吉林大学 | A kind of experimental provision, method and system of scene of a traffic accident photorecce principle |
| 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 |
| 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 |
| 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 |
| CN108230420B (en) * | 2016-12-15 | 2021-07-23 | 千寻位置网络有限公司 | Drawing method for field 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 |
| CN113470357B (en) * | 2021-06-30 | 2022-09-02 | 中国汽车工程研究院股份有限公司 | Road traffic accident information processing system and method |
| CN113627872B (en) * | 2021-07-21 | 2024-07-16 | 深圳市城市公共安全技术研究院有限公司 | Investigation information acquisition system and method for production safety accident site |
| 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 |
| 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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| CN2524990Y (en) * | 2001-08-28 | 2002-12-11 | 张万鹏 | Traffic incident recorder for vehicle |
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