1 System overview
1.1 Construction content
1. The provincial government builds a mobile police service application management platform. There are three main functions: One is user registration management. Automatically extract the user information of the mobile police service TF card in various places, and supplement and refine the user information for the police service user management; the second is the user authority management. Used for user role and authority management; the third is the registration management of the police service through application module. The management mode adopts the provincial and municipal two-level hierarchical management mode.
2. The provinces, departments and prefectures and cities shall build a set of security audit access platform and application service access platform respectively, and realize the cascade of the provincial and municipal application service access platforms at the same time. The security audit platform realizes information synchronization with the mobile police application management platform, and is used for application authorization access and recording of the police access log user access logs. The application service access platform is used to realize the unified docking of the police service application and the intelligence platform, the police comprehensive platform, the PGIS platform, the video platform, and other business platforms and system data.
3. Establish a set of general police applications in the provinces, departments and cities. Realize all kinds of information comprehensive inquiry of ministries, provinces and cities, and all kinds of information collection and input functions including multimedia, and realize the integration with intelligence platforms including key personnel control and intelligence clue collection functions, and police officers including community police collection modules. Integrated platform, PGIS platform including functions such as human and vehicle positioning, flat command, etc., and video platform including real-time video retrieval functions for vehicles, mobile phones, and roads. At the same time, in order to facilitate the police to understand the latest information on public security work in the intranet, the mobile terminal software integrates the functions of intranet notifications, news, mail viewing, and OA office.
1.2 System positioning
Mobile Police Service provides information guarantee for the handling of emergencies and emergencies, which can avoid the occurrence of major cases and create information conditions for the rapid detection of emergencies. Provide beneficial data information services for detection methods such as pre-alarm, jamming, squatting, deployment control, surveillance, and tracking. At the same time, Mobile Police Service can also carry out on-site law enforcement, evidence collection, verification, and log recording to meet the needs of police officers on duty, public security, traffic control, criminal investigation, etc., and achieve the powerful power of "one machine in hand, full of magical powers", which is very suitable The characteristics of quick response and timely action of public security police are the right assistants of police officers in law enforcement and case handling.
1.3 Construction background
With the deployment of Police Geographic Information System (PGIS), various demonstration applications based on PGIS are put into operation, and the construction of police informationization led by GIS is playing an increasingly important role.
In view of the mobility, suddenness, and urgency of public security work, front-line departments need to exchange information with the public security data center in real time. Through mobile police communication, police officers can quickly inquire population information, vehicle information, and location information. Intuitively display the distribution on the map, and get the support of public security business information anytime and anywhere, especially the application of geographically labeled photos and GIS analysis functions, which can not only solve the identification of suspects in frontline public security work such as wanted, co-investigation, interception, and search It also enables police officers to quickly make judgments about the police situation, take the initiative in their work, seize favorable opportunities, reduce police injuries or sacrifices caused by unfamiliarity with the police situation, and reduce the loss of the masses. The wireless extension of public security comprehensive information is an important means to facilitate police work and improve work efficiency.
2 System architecture
2.1 Platform technical architecture
Architecture diagram
The system is divided into the following layers:
1) Mobile terminal
The Android smart phone provided by the communication operator is inserted into the customized TF card in the department to ensure that the application can run safely on the mobile terminal and temporary data will not be stolen. The client that runs the secure channel on the terminal provides an interface for interaction between terminal data and the server.
2) Network layer
Use the 3G wireless network to access the public security private network through the VPN method to access the mobile police service server. During access to the public security private network, the mobile terminal will be disabled with data transmission devices such as WIFI and Bluetooth, and cannot access the 3G extranet.
3) Application Service
According to the business needs of mobile terminals, involving interfaces and data such as intelligence platform, police comprehensive system, video system, population database, place name address database, etc., it is configured in the form of service interface through the mobile police service server to realize interaction with the client.
The audit platform mainly controls the legality and security of system users. The connected mobile terminal is bound to the user using the TF card and mobile phone logo. Manage the terminal service interface and server-side interface in the secure channel, use the stateless connection method to verify the validity of the data in real time, record the data interaction operation on the channel in the log, and promptly alarm if an abnormality is found.
2.2 Deployment architecture diagram
System deployment architecture diagram
3 Standard specifications and requirements
In the process of platform construction, follow the "Public Security Industry Standard of the People's Republic of China"-"Urban Police Geographic Information System Standard System", and keep consistent with the overall plan of the national police basic platform to ensure data sharing. System design basis:
GA/Z01-2004 "Urban Police Geographic Information System Standard System"
GA/T491-2004 "Classification and Code of Geographic Information for Urban Police"
GA/T492-2004 "Urban Police Geographic Information Graphic Symbols"
GA/T493-2004 "Guidelines for the Construction of Urban Police Geographic Information System"
GA/T530-2005 "Urban Police Geographic Information Data Organization and Database Naming Rules"
GA/T532-2005 "City Police Geographic Information Data Stratification and Naming Rules"
GA/T529-2005 "Urban Police Geographic Information Attribute Data Structure"
GA/T531-2005 "Thematic Map and Map Layout of Urban Police Geographic Information"
GA/T627-2006 "City Police Geographic Information Data Collection and Update Specification"
GA/T628-2006 "Urban Police Geoinformation Spatial Data Quality"
GA/T629-2006 "City Police Electronic Map Coordinate System and Scale"
4 Mobile terminal GIS function design
Mobile terminal applications mainly include MIS and GIS applications. Through the integration of graphics and text, it provides assistance to police officers in all aspects. The following mainly designs the application of GIS in Mobile Police Communication from the perspective of GIS.
Function main interface
4.1 Map display
The main functions include:
1) Display basic map data and remote sensing image maps.
2) According to permissions, you can load business-related layers (covering key areas and places, hotels, entertainment venues, chemical dangerous goods, technical defense facilities, special industries, foreign-related units, urban residents, dog owners, patrols and other business information ).
3) Overlay thematic maps of permanent resident information, temporary resident information, and key population information, and form a pie-shaped or column-shaped thematic map based on the combination of administrative divisions and the number of various types of populations, which visually show the general situation of the jurisdiction.
4.2 Information query
Information query mainly includes attribute query and spatial query. The query results containing geographic location information can be displayed intuitively on the map.
4.2.1 Personnel query
Ability to use ID numbers, names, and names for information such as regular, temporary, domestic travelers, Internet users, drug users, drug-related personnel, unknown corpses, drivers, supervisors, high-risk personnel, key provincial personnel, missing persons, etc. Attributes such as time, and can be queried in conjunction with spatial location.
Temporary population query
4.2.2 Case (event) inquiry
Divided into the following two types of queries:
1) Criminal case inquiry. Attribute query can be performed based on case number, case type, case status, case name, etc., combined with the location information of the location where the case occurred, and displayed on the map. At the same time, you can draw the spatial scope on the map to inquire about criminal cases, to understand the situation around the crime location, and to provide help for the investigation and judgment of the combined case and the case.
2) Query of vehicle violation information. Query the violation record of the designated vehicle through the license plate number, owner's name, ID number, vehicle type, etc., and display the violation location on the map.
Case (event) query query results
4.2.3 Location query
Place query is mainly for basic information retrieval of hotels, Internet cafes and rental houses. The data is filtered according to the attribute conditions and the spatial position relationship, and the current basic status of the place can be obtained at the same time.
The functions are as follows:
1) Query the hotel according to the hotel legal person, ID number, hotel name and hotel location. At the same time, you can check the hotel information in the current area according to the space range on the map, the specific distribution location, and related information including photos and video information, and The number of people registered in the current time.
2) Internet cafes and rental houses can be inquired in the same way as hotels, and you can view the status information at the current time.
Hotel search search results
Positioning display
4.3 Monitoring
Combining with several monitoring systems connected to the public security private network, the mobile terminal can operate the monitoring system through service access and interface calling on the mobile police server.
4.3.1 Vehicle monitoring
Vehicle monitoring is divided into two categories: on-board GPS monitoring and non-monitoring vehicles.
The functions are as follows:
1) Car GPS vehicles. Realize real-time monitoring of police vehicles and taxis in the jurisdiction. Dynamically obtain the current screen vehicle information from the vehicle monitoring data center, and support attribute and spatial query at the same time. Realize the functions of monitoring the vehicle's position and driving status, query and display its trajectory at any time period, and realize the function of timely and effective data interaction with the monitoring center.
2) Non-monitored vehicles. According to the vehicle information captured in the road condition monitoring, the bayonet that the vehicle passes through can be analyzed, and the trajectory simulation and playback can be carried out according to the time and location.
Vehicle location monitoring
4.3.2 Road condition monitoring
Connect to the traffic camera system and display its distribution location on the map. And get the road condition information superimposed and displayed, and at the same time can query the attributes and spatial position of the camera. After the result is positioned and displayed, the camera is operated on the mobile police to realize the real-time view of the road conditions and the flow of people.
Road condition monitoring
4.3.3 Community monitoring
Collect and mark the location of community monitoring points to achieve linkage with the electronic fence, and at the same time, directly access the video surveillance images in the mobile police service.
4.3.4 Monitoring of police officers on duty
Access to the police officer monitoring system on duty, the functions are as follows:
1) Real-time display of the distribution of police officers. Support attribute conditions and spatial relations to query police information, and the system can prompt police officers with abnormal locations (not moving for a long time during working hours).
2) According to the time period, the simulation and playback of the designated police officer's activity track.
3) Police officers who leave the designated administrative area without authorization can be automatically reported to the command center and recorded.
4.4 Statistical analysis
Statistical analysis mainly uses the spatial statistics and spatial analysis functions of GIS. It can not only form traditional charts, but also heat maps, for the occurrence frequency of cases (events) in the designated area and the distribution positions, which can help the daily security and control of the jurisdiction. Provide a basis for help in arrest, prevention and control. In the case (incident) statistics, based on the statistical results, the location of the cooperating case, the perpetrator and other information are combined for analysis.
5 Mobile terminal GIS application design
5.1 Data collection
Data collection mainly includes two types of data, namely, standard place names and addresses and business-related data. For data, there are mainly two operations: information collection and entity information maintenance (including data modification, deletion, enrichment of attribute information, etc.).
The functions are as follows:
1) To collect information, you need to fill in the basic attribute information of the entity, and then collect multimedia information (pictures and videos), first locate it through the mobile terminal GPS, and mark the geographic location on the map.
2) Entity information maintenance, mainly to complete the update operation of existing data. In view of the imperfect data in the early stage, the geographic coordinate position of the entity can be collected through the mobile police service, and photos and video information can be taken at the same time.
Use the 3G network to submit data online, after passing the review of the mobile police service server, update or write it in the marked place name address database and business association database.
Data Acquisition System Electronic Map
5.2 Actual population management
Population management mainly includes the management of three types of people: permanent population (resident population), temporary population (temporary population), and flow population (floating population). The query of population information is realized on the mobile terminal, and the query conditions include attributes and spatial location relationships. When conducting population surveys in the field, collect basic population information, including photos and videos, to improve work efficiency.
The functions are as follows:
1) Population information query. For the three types of population, query the attributes such as name, ID number, gender, etc., and you can also select a location on the map to query the basic information of the population.
2) Collection of population information. Collect basic information of suspicious persons at road bayonet. In the process of permanent population and temporary population surveys, map positioning is used to update and maintain population data, and relevant pictures can be collected.
5.3 On-site law enforcement
According to the handling of the case (incident), in the process of law enforcement in the field, the mobile police service is used to find the shortest route navigation, and can query the distribution of surrounding police resources, and can comprehensively dispatch police forces in a timely manner for complex cases Conduct multi-departmental coordination of law enforcement. And record the details of law enforcement, including geographic location, on-site photos, video and voice information.
The functions are as follows:
1) Inquiries about cases (events). According to the accepted cases (incidents), inquire about the work tasks that need to be processed at present, and deal with them in a targeted manner according to the location of the case.
2) Geotag the photos. Collect photos and video information of crime scenes and law enforcement scenes.
3) Query of police resources. It can realize the basic inquiry of police resources, according to the point of case and law enforcement point, inquire various surrounding resources, comprehensive dispatch, and coordinated law enforcement by multiple departments.
5.4 Security Patrol
In the daily patrol work of the police, the mobile police can be used to query patrol points in real time, and for emergencies during the patrol, it can be recorded and reported in time, and deal with them quickly, so as to better improve the public security environment in the jurisdiction. The functions are as follows:
1) Combining the previous personnel query, realize basic information query, on-site interrogation, according to the base map and GPS positioning position, record patrol interrogation scene, interrogation personnel, objects, vehicles and other information.
2) According to the patrol position, realize the basic information management of the unit, the information management of the employees, and the management of the safety inspection information of the unit site.
3) It can set patrol routes and inspection points, collect information in real time for police situations that appear in inspection tasks, record incidents, and report to the command center.
4) The police who deviate from the designated patrol line without authorization will automatically report to the center, and the time of entering and leaving the patrol point and detention time can be automatically recorded and analyzed.
5.5 Emergency Command
Real-time check the distribution positions of field police officers on duty, and display the position information of various police types on the same GIS map to realize the centralized dispatch and command of multiple police forces.
The main functions include:
1) Multiple methods (such as police number, unit, name) can be used to query the real-time distribution of single/multiple experiences.
2) Real-time display of police status (such as traffic police, patrol, criminal, special police, plainclothes, etc.).
3) Realize the function of dynamic plotting. In the event of an accident/case, the decision maker draws a police situation map to form a combat command plan and supports multi-user release.
4) When a traffic accident/case occurs, the system can display the surrounding environment (such as intersections, stations, etc.) and police force distribution at the accident site/case site. You can press and hold the shortcut key, and the alarm location will be displayed at a certain point on the GIS map. , With this point as the center, set a certain range (such as 500 meters, 1000 meters, etc.), and send the latest police information to all police officers in the range through SMS linkage, so as to achieve the most convenient and intuitive combat command. Realize the rapid handling of traffic accidents or cases; at the same time, in response to emergencies, according to the position of the police officer, it can be dispatched in real time to improve the ability to assist decision-making.
5.6 Security
In security activities, a comprehensive command with the full cooperation of multiple departments such as public security, patrol, security, traffic management, fire protection, and public transportation is required. The application system comprehensively displays the business information of various departments based on electronic maps and real-life images on a unified map platform, and conducts research, judgment and command. You can inquire about the security management of major events, the information of the guard's residence, the information of the guard's route, and the information of the guard site, as well as the key personnel inquiry and common information inquiry. The functions are as follows:
1) Thematic data collection of guards. The security department collects special data collection of security guards for major events. For example: information on the residence of the guard object, information on the guard route, information on the guard scene, and information on the place where the guard object frequently moves.
2) Security topic query. Resident location query, guard route query, GPS police force query, fast map positioning functions; police stations, sub-bureaus, traffic patrols, etc. participate in the deployment of police forces. Mark the police deployment plan of the guard route on the electronic map to form a command and combat map.
3) Security plans for major events. Realize the visual display, management and production of maps for security tasks, plans, plans, police force arrangements, security scenes, and security routes for major events. Realize the post setting based on map or indoor hierarchical structure diagram, post number setting, security unit setting, police resource statistics, police arrangement, on-site video image call, etc. At the same time, statistics of global police resources and deployment of each unit, as well as police investment Trend.
4) Video surveillance PGIS association. It needs to be connected with a video surveillance system. According to the driving situation, the video images along the guard route can be read at will, and various social security conditions and guard conditions can be dynamically monitored. It can query the location of the camera and play real-time video information.
5) Guard assisted analysis. Superimposed analysis of the security scene with the recent incidents, key residential areas, and dangerous goods storage areas.
The system uses a wireless 3G network, and network providers include China Unicom (WCDMA), China Mobile (TD-CDMA) and China Telecom (CDMA-2000). Disable communication functions such as WIFI and Bluetooth in Android phones.
The secure channel mainly runs in the basic network environment, including the terminal service interface and the server-side interface. The data transfer between the interfaces is short-term connection, that is, no server-side session is established. Network data security is guaranteed from the following aspects:
- Disable the WIFI and Bluetooth functions in the phone.
2) The program and temporary data are stored in a specially customized TF card.
3) When using the 3G network, connect to the intermediate network environment through VPN to access the mobile police service. During access to the VPN, the mobile terminal cannot access any resources on the Internet.
4) The server does not save the user's session state, and will perform identity verification every time data is transferred.
5) The mobile police service access to the public security private network requires a safe isolation gatekeeper and firewall to access the public security private network server.
Application services include three categories, business application services, GIS services and data services.
The data service mainly deals with the operation of various types of databases on the public security private network on the server side. Accessed databases include business association database, place name address database, population database, etc., directly manipulate the records in the table. By writing a unified data connection interface, data table operation class, encapsulated into a unified service, and registering to the mobile police service server through the audit platform.
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- GIS service
GIS services include base map services and thematic map services. At the same time, it provides query services for corresponding layers to satisfy the spatial query and attribute query functions in the electronic map. The content is as follows:
1) Basic map service. Including basic map services and remote sensing image maps, after using slice processing, load and display on the client. Disable caching in the service to prevent the client from caching confidential map data.
2) Thematic map service. Release thematic maps according to the classification of police resources. Used for querying and spatial statistics on the map.
The business application service realizes the combination with other police service systems. Including PGIS platform, police comprehensive system, monitoring system and community policing, etc. Through the audit platform, the service interface and parameters provided by the business system are configured on the mobile police service server, and the access authority of the interface is configured. In the service interface of the mobile terminal, You can view the service name and parameters, write program access.
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