CN104268818B - The System and method for that a kind of emergent tracking of mobile target and earthquake calamity scope determine - Google Patents

The System and method for that a kind of emergent tracking of mobile target and earthquake calamity scope determine Download PDF

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CN104268818B
CN104268818B CN201410556887.2A CN201410556887A CN104268818B CN 104268818 B CN104268818 B CN 104268818B CN 201410556887 A CN201410556887 A CN 201410556887A CN 104268818 B CN104268818 B CN 104268818B
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information
tracking
target
service
mobile terminal
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CN104268818A (en
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周晓光
李光强
李道震
阳成飞
张攀
曾璐
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Central South University
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Central South University
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Abstract

The invention discloses the System and method for that a kind of emergent tracking of mobile target and earthquake calamity scope determine.System includes service end and mobile terminal, and moving object database is established in service end;When emergent tracking event occurs, service end, which filters out tracking target and mobile terminal is carried to it, sends emergent tracking request;Mobile terminal reception, analysis request simultaneously send current location information to start emergent tracking to service end.Earthquake calamity seriously damages area determination method, rough disaster area scope is determined according to earthquake centre and earthquake intensity first, filters out the permanent mobile target in the region, emergent tracking is carried out to it, obtain mobile object feedback position, rough range is divided into multiple sector elements centered on earthquake centre, each unit that is linked in sequence obtains more accurate disaster area apart from earthquake centre closest approach and seriously damages region.The present invention can reduce transmitted data on network amount, mitigate service end database purchase pressure, and improve earthquake calamity and seriously damage region and determine efficiency.

Description

The System and method for that a kind of emergent tracking of mobile target and earthquake calamity scope determine
Technical field
The invention belongs to the service technology field based on locus, and in particular to a kind of emergent tracking of mobile target and shake The System and method for that calamity scope determines.
Background technology
In recent years, GPS/GNSS (such as GPS, GLONASS and triones navigation system) intelligent terminal is carried in the world Interior extensive use.It was reported that smart mobile phone shipment amount in 2013 first broken 1,000,000,000, customer volume nearly 2,000,000,000.Because intelligent terminal has The function such as position, communicate, taking pictures in real time, for mobile surface targets it is emergent/follow-up service should be needed to provide possibility.At present in real time with Track system is applied well in multiple industries, as vehicle GPS real-time tracking system intelligent transportation, navigation, police service, should First aid the field such as is helped and is used widely;Mobile phone real-time tracking is used widely in fields such as field operation inspections.But current reality When tracking system be mainly by mobile terminal timing to server send current location realization, that is to say, that in spite of Need, just timing sends position data to server after mobile terminal start-up trace system, and server, which then receives, to be stored largely The track data of mobile target, even if target is not moved in situ, data also can be regularly sent, therefore even stored in server A large amount of inoperative position data.Because this method stores a large amount of mobile target trajectory data, privacy leakage risk be present;Due to needing A large amount of track datas are stored, it is high to server apparatus requirement when causing system Construction, improve construction cost;No matter need with No, mobile terminal regularly will send position data to server, add the financial burden during use.Hence in so that permitted Multi-user hangs back to real-time tracking system, have impact on its further genralrlization used.
In recent years, the natural calamity such as earthquake, hurricane, tsunami is risen one after another in the world, and to various regions, government meets an urgent need Rescue ability proposes severe challenge.More and more volunteer is spontaneous simultaneously participates in emergency management and rescue, and volunteer turns into should The important force that first aid is helped.Such as in 2008, a large amount of volunteers are spontaneous participates in 512 Wenchuan earthquake emergency reliefs work, hair Great function has been waved, and has shown the new feature different from former volunteer work, China's " aspiration has therefore been referred to as by scholar within 2008 Person's first year " [Sichuan Shanix Academy of Social Sciences thesis for the doctorate, the farsighted .2010 of Li Xing, Chinese volunteer action and its action research].River in Shangdong Province After valley shake, China successively there occurs violent earthquakes such as cajaput, Yaan, Dingxi, is caught up with each time with large quantities of volunteer's very first times again Disaster area is gone to deploy rescue service.But systematism level to be often present low by these spontaneous volunteers, it is easy to because ensureing deficiency And the victims of the disaster are become, it is the problems such as earthquake rescue increases trouble, this just needs this great power to the volunteer of emergency management and rescue to enter Row effectively tissue.The volunteer participated in rescue is tracked, instructs to greatly improve the efficiency of emergency management and rescue, but due to Real-time tracking target also implies the risk of tracked target privacy leakage while causing flow to waste, and may cause big Therefore the volunteer of the calorimetric heart hangs back to emergency management and rescue.And in the emergent applications such as rescue, it is only necessary to urgent feelings are occurring Tracked mobile target after condition, it is not necessary to carry out real-time tracking.
But the current all kinds of tracking systems (including vehicle-mounted, mobile phone tracking system) based on GPS/GNSS be all using in real time with Track pattern, the timing of real time position reporting system is typically started by mobile terminal and carried out to server transmission current location mode Tracking.When mobile target residence is not dynamic in somewhere, reporting system still sends current location on time, because GPS/GNSS is real-time There is position error (being generally at present in 10 meters) in the locus of acquisition, service end receives substantial amounts of closely interior digit According to the track for causing to be drawn according to these point positions has the problems such as selfing is even chaotic (see accompanying drawing 2).In a word, track side at present Method can not according to it is emergent/requirements, event should be needed, by decision-making management meet an urgent need/should be needed in terms of triggering, control tracking be in progress;Real-time tracking The problems such as privacy leakage risk, system Construction and use cost are high be present.
In terms of earthquake calamity scope determination, mainly quickly delimited at present by earthquake intensity, Digital Isoseisms tentatively by disaster area Domain, disaster area image further determines that essence by the condition of a disaster assessment after then obtaining shake using the remote sensing observations such as unmanned plane, satellite means True the condition of a disaster.Such as period-luminosity congruence tentatively marks disaster area scope according to earthquake INTENSITY DISTRIBUTION feature, earthquake place and earthquake magnitude data【Ground Shake research, 2010. period-luminosity are complete, Lu Yongkun, Fei Minglun etc., earthquake disaster damage entry evaluation technique study】.Cao's quarter etc. compared for Conventional positive circule method is with two methods of Digital Isoseisms Model, the disaster area model using isoseismal line model to 6.4 grades of earthquakes of Yunnan Ning Er Enclose and quickly judged【The theory of calamity, 2008. Cao carve, Wang Feng, Li Yongqiang etc., 6.4 grades of earthquake-stricken area scopes of Yunnan Ning Er it is quick Judge】.Lu Bodi etc. collects disaster area high definition image using the remote sensing such as unmanned plane, for determine, divide disaster area scope provide according to According to【The theory of calamity, 2011. Lu Bo enlightening, Meng Diwen, Lu Ming, etc. application of the unmanned plane in major natural disasters and discussion】.It is but logical Cross earthquake intensity, the Digital Isoseisms devastated general range quickly delimited of estimation passes through much larger than actual disaster-stricken scope The remote sensings such as unmanned plane determine the problems such as devastated existence time is long after collecting disaster area high definition image, therefore there is an urgent need to send out The method that exhibition quickly relatively can accurately determine disaster area scope.
The content of the invention
The system that technical problem solved by the invention is to provide a kind of emergent tracking of mobile target and earthquake calamity scope determines With method, network transmission burden can be mitigated, tracking data library storage pressure is reduced, more accurately determine disaster area scope.
In order to solve the above technical problems, the technical solution adopted in the present invention is:
A kind of mobile target is met an urgent need tracking system, including service end and mobile terminal, service end and mobile terminal channel radio Letter connection;The service end include data management module, filtering module, information generation with sending module, information receiving module with And map and track display module;
The data management module includes moving object database, for storing mobile target data, mobile target data Name including mobile target, the communication of mobile terminal number entrained by mobile target and the mobile permanent region of target;
The filtering module is used to screen tracking target according to filter condition;
Described information generates and sending module, current for being sent to the mobile terminal entrained by the tracking target filtered out Position request information and real-time tracking solicited message;
Described information receiving module, the current location information sent for receiving the mobile terminal entrained by tracking target;
The map and track display module, for the present bit confidence for sending the mobile terminal tracked entrained by target Breath is superimposed with map, the current location of display tracking target;
The mobile terminal includes information and received and parsing module, locus acquisition and filtering module and positional information Generation and sending module;
Described information receives and parsing module, the information sent for receiving and parsing service end;
The locus obtains and filtering module, for obtaining current location information, filters the position that need not be sent Information;【Set if the distance between point that the point of current location information instruction and the positional information of upper one transmission indicate is less than Determine threshold value, then the current location information is the positional information that need not send, namely invalid positional information.】
The positional information generation and sending module, for sending effective positional information and status information to service end; 【If the distance between point that the point of current location information instruction and the positional information of upper one transmission indicate is more than setting threshold Value, then the current location information is effective positional information】Status information includes representing the unchanged coding in position.
Further, the locus of the mobile terminal obtains and connect with filtering module including GPS or GNSS locus Receiving apparatus.
A kind of mobile target is met an urgent need tracking, is met an urgent need tracking system, comprised the following steps using above-mentioned mobile target:
Step 1:The data management module of service end establishes moving object database, and the data of moving object database include Communication of mobile terminal number, the mobile permanent region of target entrained by the name of mobile target, mobile target;
Step 2:When tracking event meet an urgent need/should be needed to occur, the filtering module of service end screens according to filter condition to be tracked Target;
Step 3:Information generation and the mobile terminal entrained by sending module to the tracking target filtered out of service end are sent out Send current Position Request information;
Step 4:The letter that the information of mobile terminal entrained by tracking target receives with parsing module receives, parsing receives Breath, if current Position Request information is reported, and confirmed agreement, then send current location information to service end;
Step 5:The information receiving module of service end receives the current location that the mobile terminal entrained by tracking target is sent Information;Map folds the current location information that the mobile terminal tracked entrained by target is sent with map with track display module Add, the current location of display tracking target;
Step 6:Service end determines the need for carrying out real-time tracking, it is necessary to then send with sending module by information generation Real-time tracking solicited message;
Step 7:The request that the information of mobile terminal entrained by tracking target receives with parsing module receives, parsing receives Information, if during real-time tracking solicited message, and be confirmed whether to agree to tracking request;If disagreed, do not send in real time Positional information;If agreed to, before current location information is sent to service end, obtained and filtering module mistake by locus The positional information that need not be sent is filtered, active position information and status information are only sent when sending positional information;
Step 8:The information receiving module of service end receives the real time position that the mobile terminal entrained by tracking target is sent Information;Map folds the real-time position information that the mobile terminal tracked entrained by target is sent with map with track display module Add, obtain tracking the motion track of target.
Further, the data in the step 1 in moving object database are obtained by moving target registered.
Further, the method for the mobile terminal parsing information is specially:Whether the information is judged by transmitting terminal ID Need to parse immediately;Judge whether the information is to report current Position Request information or real-time tracking to ask by the coding of information Information.
Further, it is not necessary to which the positional information filter method of transmission is:Mobile terminal is sending position letter to service end During breath, while this positional information is stored in caching, after new positional information is got, calculates positional information instruction Point and the distance between point of positional information instruction of a upper transmission in caching,【Judge that mobile terminal is according to distance threshold It is no that there occurs effective mobile】If distance is less than given threshold, the positional information is invalid positional information, filters this position Confidence is ceased, and active position information is only sent when sending positional information to service end, for【The feelings of substantive position movement do not occur Condition】Invalid positional information only sends the unchanged coding in position.
A kind of earthquake calamity scope determines system, including above-mentioned mobile-object tracking system, in addition to an earthquake calamity scope is true Cover half block, earthquake calamity range determination module are connected with map with track display module, for being believed according to the position of tracking object feedback Breath determines earthquake calamity scope.
A kind of earthquake calamity range determining method, system is determined using above-mentioned earthquake calamity scope, comprised the following steps:
Step a:Moved towards according to seismic centre and earthquake zone, it is determined that rough disaster area scope;
Step b:Using permanent region in the range of rough disaster area as screening conditions, the mobile target of screening as it is emergent with Track target, using the emergent tracking of above-mentioned mobile target, obtain tracking target current location information;
Step c:Rough disaster area scope is divided into several adjacent sector elements using earthquake centre point as fan-shaped summit, calculated Go out in each sector element in the location point fed back to the point that earthquake centre is closest, according to being linked in sequence clockwise or counterclockwise most Near point, obtain polygon P1;
Step d:Check the location point that other tracking targets whether are included in polygon P1;If nothing, polygon P1 is Accurate disaster area scope;If other points, the sector element where the point is obtained, and the original in the sector element is replaced with the point Closest point, form polygon P, i.e., accurate disaster area scope.
Beneficial effect:
1st, the emergent tracking system of mobile target of the invention and method, only when emergency occurs to meeting tracking condition Mobile target be tracked within certain period, can be substantially reduced tracked target quantity and tracked time, reduce privacy Disclosure risk, improve the independence that mobile target is traced in it meet an urgent need/should need event;This tracking system and method are easier Received by most people, so as to widen the application field based on locus service significantly, practicality is stronger;
2nd, mobile-object tracking system of the invention and method, before mobile target sends real-time position information, automatic mistake Filter is not required to send the point position information of (as do not moved substantially), only sends active position or status information, can grasp movement real-time While the position of target and state, mitigate network transmission burden, reduce when even avoiding the display of service end track due to movement Target is actual within a period of time not to be moved substantially, but because the GPS/GNSS locus for obtaining transmission in real time has positioning mistake Difference (is generally in 10 meters) at present, and service end receives substantial amounts of closely interior point position data, the track drawn according to these point positions The problems such as in the presence of being selfed or even being chaotic;
3rd, due to tracking meet an urgent need/should be needed to greatly reduce the quantity of tracked target, tracked time, filter out A large amount of Null Spot positions, thus transmitted data on network amount can be greatly reduced, reduce data communication use cost, while can greatly reduce Tracking data library storage pressure, reduce the cost of investment of system Construction;
4th, earthquake calamity scope of the invention determines system and method, and communications service damage is usually associated with according to earthquake, Cause communicating interrupt, phenomena such as mobile terminal can not respond emergent tracking request in the range of disaster area, utilize post-earthquake emergency response tracking knot Fruit (whether can respond) carrys out the method for reversely determining disaster area scope, can be more accurately determined after calamity in a few minutes critical Disaster area scope, efficient scientific basis is provided with rescue for emergent observation.
5th, after geological disaster generation, with the mobile-object tracking system and method for the present invention to the aspiration that participates in rescue Person is tracked, instructed, and can greatly improve the efficiency of emergency management and rescue.With needing to extract calamity after obtaining disaster area data assessment at present Area's scope is compared, and is greatly improved the serious damage regional extent efficiency of determination, has important references valency with rescue to emergent observation Value.
Brief description of the drawings
Fig. 1 is that the emergent tracking of mobile target determines system construction drawing with earthquake calamity scope;
Fig. 2 closely puts cluster exemplary plot not move target substantially;
Fig. 3 is service end database part table structure chart;
Fig. 4 is emergent tracking implementation process figure;
Fig. 5 acquisition for mobile terminal, the flow chart for reporting current location or state.
Fig. 6 earthquake calamity scopes determine schematic diagram;
Fig. 7 is that the disaster area areal map that is badly damaged automatically generated according to emergent trace simulation data (is simulated with Ludian earthquake Data instance).
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1:
The tracking system as shown in figure 1, a kind of mobile target is met an urgent need, including service end and mobile terminal, service end and movement Terminal wireless communication connects;The service end includes data management module, filtering module, information generation and sending module, information Receiving module and map and track display module;
The data management module includes moving object database, for storing mobile target data, mobile target data Name including mobile target, the communication of mobile terminal number entrained by mobile target and the mobile permanent region of target;
The filtering module is used to screen tracking target according to filter condition;
Described information generates and sending module, current for being sent to the mobile terminal entrained by the tracking target filtered out Position request information and real-time tracking solicited message;
Described information receiving module, the current location information sent for receiving the mobile terminal entrained by tracking target;
The map and track display module, for the present bit confidence for sending the mobile terminal tracked entrained by target Breath is superimposed with map, the current location of display tracking target;
The mobile terminal includes information and received and parsing module, locus acquisition and filtering module and positional information Generation and sending module;
Described information receives and parsing module, the information sent for receiving and parsing service end;
The locus obtains and filtering module, for obtaining current location information, filters the position that need not be sent Information;If the distance between point that the point of current location information instruction and the positional information of upper one transmission indicate is less than setting Threshold value, then the current location information is the positional information that need not send, namely invalid positional information.
The positional information generation and sending module, for sending effective positional information and status information to service end; If the distance between point that the point of current location information instruction and the positional information of upper one transmission indicate is more than given threshold, Then the current location information is effective positional information;Status information includes representing the unchanged coding in position.
Further, the locus of the mobile terminal obtains and connect with filtering module including GPS or GNSS locus Receiving apparatus.
Fig. 3 is service end database part table structure chart;Service end includes in figure:Mobile surface targets information data;System System activation request message data, emergent tracing positional data and administrative division data.
Embodiment 2:
A kind of mobile target is met an urgent need tracking, is met an urgent need tracking system, comprised the following steps using above-mentioned mobile target:
Step 1:The data management module of service end establishes moving object database, and the data of moving object database include Communication of mobile terminal number, the mobile permanent region of target entrained by the name of mobile target, mobile target;
Step 2:When tracking event meet an urgent need/should be needed to occur, the filtering module of service end screens according to filter condition to be tracked Target;
Step 3:Information generation and the mobile terminal entrained by sending module to the tracking target filtered out of service end are sent out Send current Position Request information;
Step 4:The letter that the information of mobile terminal entrained by tracking target receives with parsing module receives, parsing receives Breath, if current Position Request information is reported, and confirmed agreement, then send current location information to service end;
Step 5:The information receiving module of service end receives the current location that the mobile terminal entrained by tracking target is sent Information;Map folds the current location information that the mobile terminal tracked entrained by target is sent with map with track display module Add, the current location of display tracking target;
Step 6:Service end determines the need for carrying out real-time tracking, it is necessary to then send with sending module by information generation Real-time tracking solicited message;
Step 7:The request that the information of mobile terminal entrained by tracking target receives with parsing module receives, parsing receives Information, if during real-time tracking solicited message, and be confirmed whether to agree to tracking request;If disagreed, do not send in real time Positional information;If agreed to, before current location information is sent to service end, obtained and filtering module mistake by locus The positional information that need not be sent is filtered, active position information and status information are only sent when sending positional information;
Step 8:The information receiving module of service end receives the real time position that the mobile terminal entrained by tracking target is sent Information;Map folds the real-time position information that the mobile terminal tracked entrained by target is sent with map with track display module Add, obtain tracking the motion track of target, and then make a policy.
Further, the data in the step 1 in moving object database are obtained by moving target registered.
Further, the method for the mobile terminal parsing information is specially:Whether the information is judged by transmitting terminal ID Need to parse immediately;Judge whether the information is to report current Position Request information or real-time tracking to ask by the coding of information Information.
Further, it is not necessary to which the positional information filter method of transmission is:Mobile terminal is sending position letter to service end During breath, while this positional information is stored in caching, after new positional information is got, calculates positional information instruction Point and the distance between point of positional information instruction of a upper transmission in caching, according to distance threshold (such as 20m, according to movement Terminal positioning precision determines) judging mobile terminal, whether there occurs effective mobile;If distance is less than given threshold, the position Information is invalid positional information, filters this positional information, and active position is only sent when sending positional information to service end Information, in the case of substantive position movement does not occur, i.e., invalid positional information only sends the unchanged coding in position.
As shown in Figure 4, Figure 5, Fig. 4 is emergent tracking implementation process figure:In figure left side function it is emergent/follow-up service should be needed Realize that the right function is realized in mobile terminal in end;Service end communicates with the data of mobile terminal and typically realized by wireless network.
Fig. 5 acquisition for mobile terminal, the flow chart for reporting current location or state:Distance between previous report a little is more than threshold The current location of acquisition is reported during value;The unchanged coding in position is sent during less than threshold value, to distinguish state out of touch.
Embodiment 3:
A kind of earthquake calamity seriously damages region and determines system, including the emergent tracking system of above-mentioned mobile target, in addition to one Individual earthquake calamity range determination module, earthquake calamity range determination module are connected with map with track display module, for according to tracking target The positional information of feedback determines earthquake calamity scope.
As described in Figure 1, system construction drawing is determined for earthquake calamity scope;Service end is system server (as that will meet an urgent need/answer in figure It need to track during for small range event or small-sized mobile terminal (such as intelligence portable (as home-use parent carries) Energy mobile phone, PDA, notebook computer, tablet personal computer, desktop computer etc.), message 1 represents emergent follow-up service end request/service letter Breath, message 2 represent mobile target response service end feedback information (including current location or status information).
Embodiment 4:
A kind of earthquake calamity range determining method, system is determined using above-mentioned earthquake calamity scope, comprised the following steps:
Step a:Moved towards according to seismic centre and earthquake zone, it is determined that rough disaster area scope;
Step b:Using permanent region in the range of rough disaster area as screening conditions, the mobile target of screening as it is emergent with Track target, using the emergent tracking of above-mentioned mobile target, obtain tracking target current location information;
Step c:Using earthquake centre point as fan-shaped summit by rough disaster area scope be divided into several (such as 36, can be according to feedback Point target quantity determines) adjacent sector element, calculate in the location point fed back in each sector element to earthquake centre distance most Near point, according to the closest approach that is linked in sequence clockwise or counterclockwise, obtain polygon P1;
Step d:Check the location point that other tracking targets whether are included in polygon P1;If nothing, polygon P1 is Accurate disaster area scope;If other points, the sector element where the point is obtained, and the original in the sector element is replaced with the point Closest point, form polygon P, i.e., accurate disaster area scope.
Fig. 6 is that earthquake calamity scope determines schematic diagram, and it is quickly to be delimited according to earthquake intensity, shake intermediate data that periphery is oval in figure Devastated rough range;Elliptical center is epicentral location, and stain represents the intelligence being collected into by emergent tracking in ellipse Active user's real time position of terminal feedback, α are sector region central angle, and middle polygon is according to anti-in each sector region The serious devastated boundary line that feed point generates to the minimum range in earthquake centre.
Fig. 7 is that the disaster area areal map that is badly damaged automatically generated according to emergent trace simulation data (is simulated with Ludian earthquake Data instance).Elliptic region is the devastated rough range quickly generated according to earthquake intensity, shake intermediate data in figure;It is interior Portion's polygon is the disaster area areal map that is badly damaged automatically generated according to emergent trace simulation data.
Embodiment 5:
The implementation of the present invention mainly includes four contents:1. service end tracks object filtering and tracking solicited message generation, 2. mobile terminal meet an urgent need/should need tracking information parsing with filtering and state recognition without actual transfer point position, 3. meet an urgent need/should need with Track decision service end communicates with the data of mobile terminal, and 4. meet an urgent need tracking result and automatically generates seriously according to emergent feedback information The displaying of impaired disaster area scope.The embodiment of this four processes is illustrated separately below.
1. it meet an urgent need/should need to track expression and generation of the decision management system tracking object filtering with tracking solicited message:
Tracking decision management system meet an urgent need/should be needed to be arranged on large server or small desk computer, notebook computer, put down The even home-use parent of plate computer is carried on smart mobile phone.After emergency occurs, it is necessary to track which target can according to it is emergent/ It should need to track the determination of object filtering condition.Screening conditions may include straight space range of condition (such as in polygon), Indirect range Condition (such as place name condition, is associated) by place name with spatial dimension, and communication number packet condition (such as emergency management and rescue professional people Member, have professional skill volunteer, vehicle-mounted volunteer, general volunteer, father and mother, children and other be arranged as required to condition). Tracking solicited message is responsible for generating, sent with receiving by special communication server, and sending information to the server classifies, Different information types are distinguished by code according to system agreement on basis of classification, such as " 0 " represents test, and " 00 " expression " is sent Current single position requests ", " 001 " expression " start emergent tracking request ".Track object filtering, solicited message generation and send System is automatically performed according to database data after being triggered by emergency event.
Using Oracle 11g databases, the development environments of Visual Studio 2010, programmed using C# language, research is opened Have issued a geology earthquake disaster meet an urgent need/should need to track decision management system, realize mobile target registered, meet an urgent need/should need Tracking target is according to functions such as the screenings, tracking request generation and transmission of locus.Table structure such as Fig. 3 institutes of key data Show, implementation process is as shown in Figure 4.
2. mobile terminal meet an urgent need/should need tracking information parsing and the filtering without actual transfer point position
Mobile terminal is the programmable device of built-in GPS/GNSS locus reception device, such as smart mobile phone, flat board electricity Brain, wrist-watch etc..The identification of tracking information can be carried out with parsing according to system agreed code, and sending number according to information first knows Do not go out to judge information whether be it is emergent/management system for tracking information should be needed, if it is, read the information content, according to agreement Code carries out respective handling.Filtering without actual transfer point position can by when reporting point position information in real time every time by the point coordinates It is stored in caching, after subsequent time obtains new position coordinate, the space length of the new point of calculating and caching midpoint interdigit, but away from From less than given threshold value (such as 20m), then it is assumed that point position does not have substantial variations, sends and represents the unchanged coding in position (such as " S ") To distinguish no signal condition;Distance then sends new position coordinate more than threshold value.
In view of Android is the most main flow operation system of smart phone of current number of users, the current intelligence of the present invention Cell-phone customer terminal uses Android phone, realizes that short message is received and parsed using the backstage monitoring mechanism of android system. It is real using Android software development kit Android SDK using java language under Eclipse Kepler development environments Now Android phone end moving target information is registered, short message receives and parsing and system activation, GPS location, filtering and upload etc. Function.
3. it meet an urgent need/should need to track the data communication of decision service end and mobile terminal
After earthquake calamity occurs, service end needs quickly to send emergent tracking solicited message to numerous mobile terminals, emergent at present/ It should need to track decision service end and the data communication of mobile terminal can be showed in fact using wireless communication technique.Mechanics of communication is non-at present Chang Fada, the high efficiency communication between mobile terminal and remote server can be supported completely.
Inventor uses wireless network connected mode, and server end uses the mass-sending of short message cat (GPRS/GSM Modem) short Telecommunication function realize it is emergent/should need to track decision service end and believe to the emergent tracking request of numerous mobile terminal Batch sendings or activation Cease and receive respective feedback information (short message cat has embedded gsm wireless communication module, after inserting SIM card, short message cat just with mobile phone one Sample has been accessed in mobile radio communication).Inventor uses the SDK and secondary development bag DLL dynamic chanining bank interfaces of C# language, by Short message cat realize it is emergent/should need to track the emergency communication between decision service end and a large amount of mobile terminals.
4. service end volunteer registration, emergent tracking result and the disaster area that is badly damaged is automatically generated according to emergent feedback information Scope is shown
In order to establish volunteer's movable object tracking database, the emergent tracking result of displaying and according to emergent feedback information from It is dynamic to generate the disaster area scope that is badly damaged, and facilitate subsequent applications, it is necessary to develop the mobile surface targets letter based on WEB Map Services Breath registration, tracking and result of calculation such as show at the function.
Inventor, using JAVA language, utilizes JSP, JavaScript, SMS Modem bis- under Eclipse development environments The technologies such as secondary exploitation, Baidu Map API, realize that the mobile surface targets information registering of service end, activation request message are mass-sended, are emergent Tracking display and database manipulation function.Baidu Map are ejected when service end registers volunteer's position information, on the ground A certain location point is clicked on figure can get the longitude and latitude positional information of the point as its permanent residence;
Shown on Baidu Map epicentral location point and according to earthquake intensity, shake intermediate data quickly determine by disaster area Domain rough range;Rendered on Baidu Map with particular color in display rough range and activate successful volunteer's intelligent terminal, Using Baidu Map API self-defined Marker icon functions, the name, communicating number, permanent address of the volunteer are shown Etc. information;And the disaster area scope determined according to the emergent tracking feedback position information of volunteer.
It should be noted that above implementation is only used for illustrating technical scheme and unrestricted.It is although above-mentioned Implementation and example are described in detail all by taking earthquake calamity as an example, and tracking event should be needed by being met an urgent need present invention is equally suited for other And the disaster-stricken critical regions scope of the other types geological disaster that landslide, house are damaged on a large scale is caused to determine.

Claims (4)

1. a kind of earthquake calamity range determining method, it is characterised in that comprise the following steps:
Step a:According to seismic centre and earthquake intensity, it is determined that rough disaster area scope;
Step b:Permanent region is tracked into mesh as screening conditions, the mobile target of screening in the range of rough disaster area as emergent Mark, obtain tracking target current location information;
Step c:Rough disaster area scope is divided into several adjacent sector elements using earthquake centre point as fan-shaped summit, calculated every Tracked in individual sector element in the location point of object feedback to the closest point in earthquake centre, according to sequentially connecting clockwise or counterclockwise Closest approach is connect, obtains polygon P1;
Step d:Check the location point that other tracking object feedbacks whether are included in polygon P1;If nothing, polygon P1 is Accurate disaster area scope;If other positions point, the sector element where the location point is obtained, and the fan is replaced with the location point Former closest point in shape unit, form polygon P, i.e., more accurate disaster area scope;
In the step b, tracking target current location information is obtained using the emergent tracking system of mobile target;Mobile target is met an urgent need Tracking system includes service end and mobile terminal, and service end connects with mobile terminal radio communication;The service end includes data Management module, filtering module, information generation and sending module, information receiving module and map and track display module;It is described Mobile terminal includes information and received with parsing module, locus acquisition with filtering module and positional information generation with sending mould Block;
The step of obtaining tracking target current location information is as follows:
Step 1:The data management module of service end establishes moving object database, and the data of moving object database include movement Communication of mobile terminal number, the mobile permanent region of target entrained by the name of target, mobile target;
Step 2:When tracking event meet an urgent need/should be needed to occur, the filtering module of service end screens tracking target according to filter condition;
Step 3:The information generation of service end is sent with the mobile terminal entrained by sending module to the tracking target filtered out works as Front position solicited message;
Step 4:The information of mobile terminal entrained by tracking target, which receives, to be received with parsing module, parses the information received, such as Fruit is to report current Position Request information, and confirmed agreement, then sends current location information to service end;
Step 5:The information receiving module of service end receives the current location information that the mobile terminal entrained by tracking target is sent; The current location information that the mobile terminal tracked entrained by target is sent is superimposed by map with track display module with map, is shown Track the current location of target;
Step 6:Service end determines the need for carrying out real-time tracking, it is necessary to then send with sending module by information generation real-time Track solicited message;
Step 7:The request that the information of mobile terminal entrained by tracking target receives with parsing module receives, parsing receives is believed Breath, if during real-time tracking solicited message, then it is confirmed whether to agree to tracking request;If disagreed, real-time position is not sent Confidence ceases;If agreed to, before current location information is sent to service end, obtained by locus and filtered with filtering module The positional information that need not be sent, active position information and status information are only sent when sending positional information;Mobile terminal leads to Positional information generation and sending module are crossed, for sending effective positional information and status information to service end;Status information bag Include and represent the unchanged coding in position;
Step 8:The information receiving module of service end receives the real-time position information that the mobile terminal entrained by tracking target is sent; The real-time position information that the mobile terminal tracked entrained by target is sent is superimposed by map with track display module with map, is obtained Track the motion track of target;
In the step 7, this positional information is stored in caching by mobile terminal when sending positional information to service end In, after new positional information is got, calculate the positional information of a upper transmission in the point and caching of positional information instruction The distance between point of instruction, if distance is less than given threshold, the positional information is invalid positional information, filters this Positional information, active position information is only sent when sending positional information to service end, is only sent for invalid positional information The unchanged coding in position.
2. earthquake calamity range determining method according to claim 1, it is characterised in that obtain the locus of the mobile terminal Take includes GPS or GNSS locus reception device with filtering module.
3. earthquake calamity range determining method according to claim 1, it is characterised in that mobile target data in the step 1 Data in storehouse are obtained by moving target registered.
4. earthquake calamity range determining method according to claim 1, it is characterised in that the side of the mobile terminal parsing information Method is specially:By transmitting terminal ID judge the information whether the emergency management and rescue service end from setting, to being taken from emergency management and rescue The information at business end needs to parse immediately;Judge whether the information is to report current Position Request information or reality by the coding of information When track solicited message.
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