System for Collaborative Linkage between Public Video Security Information and Network Security Protection Mechanisms

Abstract

The present invention discloses a system for collaborative linkage between public video security information and network security protection mechanisms, including a public security monitoring platform based on video surveillance, a visualization system for smart city security policies, a smart city intelligent security gateway, and a public security multi-linkage analysis and precise early warning system. The present invention organically combines public security and network security, improving the security prevention ability and control efficiency of network information systems during the disposal process of smart city security incidents targeted at people.

Description

Technical Field

[0001] The present invention relates to the field of network information security technology, and in particular to a system for coordinated linkage between public video security information and network security protection mechanism. Background Art

[0002] Public safety and network security are the two major themes of smart city security issues. However, the current public safety and network security entities are in a state of functional separation, mutual isolation, and information separation, resulting in low response efficiency and inability to coordinate to deal with advanced APT threats, especially difficult to effectively coordinate and deal with large-scale public safety incidents involving crowds and organized behaviors.

[0003] Currently, no technology or method for the coordinated linkage between public video security information and network security protection mechanisms has been found. There are only patents related to deep processing of public video security and network security collaboration, mainly the above-mentioned ones. However, considering the needs of the integration of public security and network security in smart cities, the shortcomings of these technologies are mainly as follows:

[0004] (1) Currently, the public video security mechanism and the network security protection mechanism are isolated from each other, unrelated to each other, and unable to work together;

[0005] (2) Existing patent materials only have methods for video content analysis and crisis status prediction for specific scenes in tidal danger areas, but lack video content monitoring and early warning technologies for other scenes, and are not universal;

[0006] (3) There are existing collaborative methods for public video security, which mainly solve the problem of information fusion between multiple cameras and the problem of recognition accuracy;

[0007] (4) Collaborative methods for existing network security mechanisms, mainly to solve the interconnection and interoperability issues between various network security protection devices such as cloud platforms, gateways, and mobile Internet apps;

[0008] (5) There is currently a lack of comprehensive prevention and control methods and technologies that combine public video information, specific people, protected areas, and network infrastructure;

[0009] (6) With the continuous development of smart cities, advanced persistent cyber attacks involving complex elements such as temporal and spatial characteristics, human behavior, and mapping of cyberspace and physical space will occur more and more frequently. Effective protection against them requires technologies and methods that coordinate public video information with network security. Summary of the invention

[0010] In view of the above deficiencies in the prior art, the system provided by the present invention for the collaborative linkage of public video security information and network security protection mechanisms solves the problem of the lack of an effective collaborative protection technology mechanism for public security and network security.

[0011] To achieve the above invention purpose, the technical solution adopted by the present invention is: a system for the collaborative linkage of public video security information and network security protection mechanisms, including a public security monitoring platform based on video surveillance, a smart city security strategy visualization system, a smart city intelligent security gateway, and a public security multi-linkage analysis and precise early warning system;

[0012] The public security monitoring platform based on video surveillance collects and aggregates real-time personnel information and Internet of Things sensor information from cameras distributed at various important locations, and performs formatting and storage logical preprocessing on this information;

[0013] The public security multi-risk linkage analysis and precise early warning system is based on personnel information and Internet of Things sensor information, conducts security threat monitoring and early warning analysis for single or multiple entities in key locations, and at the same time outputs public security alarm information to the smart city security strategy visualization system based on the VMPN protocol;

[0014] The smart city security strategy visualization system, based on visualization analysis technology, realizes the generation of security strategies and the orchestration of comprehensive control measures from different perspectives, generates a security configuration file based on public security alarm information; at the same time, sends the security configuration file to a network security protection device that supports policy management to control the network security protection device to generate network control behaviors;

[0015] The smart city intelligent security gateway, based on the VMPN protocol, receives the security configuration file sent by the smart city security strategy visualization system and controls various smart city sensors connected to it to generate actions.

[0016] Furthermore: The public security monitoring platform based on video surveillance, the smart city security strategy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and precise early warning system use a standard FTTP interface to make data requests in the POST manner, and the formats of the request and response data are application / json to achieve the collaborative linkage of public video security information and network security protection mechanisms.

[0017] Furthermore: The communication protocol of the public security monitoring platform based on video surveillance, the smart city security strategy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and precise early warning system is VMPN, and the VMPN protocol is an application layer protocol.

[0018] Furthermore, the strategies for the collaborative linkage between public video security information and network security protection mechanisms include: public security warning strategies, security incident aggregation strategies, security incident restoration strategies, threat assessment strategies, and linkage disposal strategies.

[0019] Furthermore, the public security warning strategy is specifically as follows: According to the functional types of public security devices, public security device alarms can be classified into motion detection, human detection, human body sensing, vehicle type detection, crossing / area detection, face control, vehicle control types.

[0020] Furthermore, the security incident aggregation strategy is specifically as follows: The alarms generated by public security devices are aggregated into the public security multi-risk linkage analysis and precise early warning system. Based on the preset correlation analysis rules, the system correlates and aggregates the alarms from different sources to form a complete public security incident.

[0021] Furthermore, the security incident restoration strategy is specifically as follows: Analyze and restore the security incidents correlated and aggregated by the public security multi-risk linkage analysis and precise early warning system. By determining the stage of the incident occurrence, evaluate the risks of the incident to support the decision-making and disposal of the incident.

[0022] Furthermore, the threat assessment strategy is specifically as follows: Threat assessment mainly extracts the threat elements of public security incidents, including threat object behavior elements, threat object status elements, and public security protection means elements. Based on the threat elements, a weighted score is given to the threat object, and the threat level is determined according to the scoring results.

[0023] Furthermore, the linkage disposal strategy is specifically as follows: The smart city security strategy visualization system conducts security strategy inspections and linkage analysis based on the threat assessment results, combined with the current system's public security and network security strategy configurations, and provides strategy configuration suggestions. According to the actual deployment scenarios of the system, multiple security disposal strategies are provided; at the same time, through the system pre-configuration method, the threat assessment level can be associated with the linkage disposal means to achieve automatic disposal of public security threats.

[0024] Furthermore, the main functional modules of the public security monitoring platform based on video surveillance are: networking and sharing module, device access management module, networking gateway module, storage access module, business resource retrieval module, and business storage and management module. The API call interfaces are the interface for obtaining the resource details of camera monitoring points, the interface for obtaining the detailed information of monitoring points according to the number, the interface for obtaining the detailed information of the bayonet position according to the number, and the interface for operating the pan-tilt according to the monitoring point number;

[0025] The main functional modules of the smart city security policy visualization system are: the asset management module, the policy parsing module, the policy visualization display module, the policy orchestration module, the public security event handling module, and the network security event handling module. The API call interfaces are the intelligent security gateway control policy distribution interface and the network control policy distribution interface;

[0026] The main functional modules of the smart city intelligent security gateway are: the wired access function module, the wireless access function module, the cloud platform access module, the communication system support module, and the gateway protocol conversion module. The API call interface is the intelligent security gateway control policy distribution interface;

[0027] The main functional modules of the public security multi-risk linkage analysis and precise early warning system are: the multi-risk association module, the vehicle connection application service module, the integrated data management module, the map general service module, the precise early warning and analysis module, and the intelligent parsing association module. The API call interfaces are the face video surveillance alarm record query interface, the single face image surveillance interface, the event subscription information acquisition interface according to the emergency type, and the network control policy handling and distribution interface.

[0028] The beneficial effects of the present invention are as follows: The present invention proposes a collaborative linkage system for public video security information and network security protection mechanisms. The present invention is mainly applied to the scenario of protecting the network system in key areas or locations under the background of public security threats. It collaboratively links the key person information (including image recognition information, behavior status information, etc.) discovered by the video surveillance system with network security protection mechanisms such as Internet firewalls and isolation gateways, so as to improve the protection level or perform protection operations such as isolation and shutdown on the network system in a specific area or location when a specific person appears in an important area or location, minimizing the unauthorized operations of specific persons on the network system. First, the public video security information acquisition system timely monitors the scene and discovers suspicious or key person information, then triggers an alarm, and according to the pre-set security protection policy, automatically controls the network security protection mechanism to perform linkage operations, thereby protecting important network information systems from being damaged. The present invention organically combines public security and network security, improving the security prevention ability and management and control efficiency of the network information system in the process of handling smart city security events targeted at persons. Description of the Drawings

[0029] Figure 1 It is the basic component composition of the collaborative linkage system for public video security information and network security protection mechanisms in the present invention;

[0030] Figure 2 It is the data flow diagram of the collaborative linkage of public video security information and network security protection mechanisms in the present invention;

[0031] Figure 3This is the structural diagram of the functional modules of the public security monitoring platform based on video surveillance in the present invention;

[0032] Figure 4 This is the structural diagram of the functional modules of the smart city security policy visualization system in the present invention;

[0033] Figure 5 This is the structural diagram of the functional modules of the smart city intelligent security gateway in the present invention;

[0034] Figure 6 This is the structural diagram of the functional modules of the public security multi-risk linkage analysis and precise early warning system in the present invention. Detailed implementation manners

[0035] The following describes the detailed implementation manners of the present invention to facilitate those skilled in the art to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the detailed implementation manners. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions created using the concept of the present invention are within the scope of protection.

[0036] (1) Basic functional components for the collaborative linkage of public video security information and network security protection mechanisms

[0037] As Figure 1 shown, to achieve the collaborative linkage of public video security information and network security protection mechanisms, 4 basic functional structural components are required: the public security monitoring platform based on video surveillance, the smart city security policy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and precise early warning system.

[0038] Among them, the public security monitoring platform based on video surveillance: is an integrated, intelligent, and edge-domain-oriented application platform, which focuses on the aggregation, storage, processing, and application support of perception data mainly in the form of videos. The platform can provide capabilities such as unified management of IoT resources, aggregation and processing of IoT data, receiving of alarm events, and push-on-demand for the public security multi-risk linkage analysis and precise early warning.

[0039] The smart city security policy visualization system: The system aggregates and integrates the relevant device configuration policy data of network security and public security. Based on visualization analysis technology, it realizes comprehensive control measures such as security policy generation and orchestration from different perspectives, tracks the execution process of important policies and decision-making information for network security and public security, generates security configuration suggestions based on policy alarms, and supports the formation of all-weather, all-round, and visual security situation perception and disposal capabilities.

[0040] Smart City Intelligent Security Gateway: Specifically used to connect sensors commonly used in smart cities, such as optical sensors, thermal sensors, chemical sensors, gas sensors, proximity sensors, and position sensors. It has an interoperability interface and communication control capabilities, and can execute the operation of turning on / off smart city sensors according to policies. In addition, it is connected to the smart city security policy visualization system to receive control policies.

[0041] Public Security Multi-Risk Linkage Analysis and Precise Early Warning System: A linkage analysis and early warning system for public security risks based on video data and Internet of Things resources. It has the functions of automatic monitoring and intelligent identification of the online status of multiple sensors and in-depth analysis of risk data, supports the comprehensive correlation analysis of multiple risks such as faces and vehicles, and supports the comprehensive early warning of security threats to single or multiple entities in key places.

[0042] (2) API call interfaces between basic functional components

[0043] The public security monitoring platform based on video surveillance, the smart city security policy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and precise early warning system use standard HTTP interfaces to make data requests in the POST method. The formats of the request and response data are application / json to achieve the coordinated linkage of public video security information and network security protection mechanisms. At the same time, the basic communication interfaces and information types are the following 9 kinds, as shown in Table 1.

[0044] Table 1 API interfaces and information types between basic functional components

[0045]

[0046]

[0047]

[0048]

[0049] (3) Application layer protocols between basic functional components

[0050] Specifically design the communication protocol - VMPN for the public security monitoring platform based on video surveillance, the smart city security policy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and precise early warning system. The VMPN protocol is an application layer protocol, and its format definition is shown in Table 2.

[0051] Table 2 Format of the application layer protocol (VMPN) between basic functional components

[0052]

[0053] (4) Data flow of collaborative linkage between public video security information and network security protection mechanism

[0054] The public security monitoring platform based on video surveillance collects and aggregates real-time personnel information and Internet of Things sensor information from cameras distributed at various important locations, and performs preprocessing such as formatting and logical storage on this information. The public security multi-risk linkage analysis and precise early warning system performs security threat monitoring and early warning analysis for individual or multiple entities in key locations based on this personnel information and Internet of Things data. At the same time, based on the VMPN protocol, it outputs public security alarm information to the smart city security policy visualization system. The smart city security policy visualization system, based on visualization analysis technology, realizes comprehensive control measures such as security policy generation and orchestration from different perspectives, and generates a security configuration file based on policy alarms. At the same time, the security configuration file is sent to network security protection devices that support policy management (such as firewalls, network gates, etc.) to control the network security protection devices to generate network control behaviors. On the other hand, the smart city intelligent security gateway, based on the VMPN protocol, receives the security configuration file sent by the smart city security policy visualization system and controls various smart city sensors connected to it to generate actions. The collaborative linkage data flow diagram is as Figure 2 shown.

[0055] Considering compatibility and feasibility, the network security configuration policies of the smart city security policy visualization system and network security protection devices adopt the configuration policy interfaces supported by current mainstream network security products. The network security monitoring and early warning information interacts with the smart city security policy visualization system using current mainstream implementation methods (such as implementing based on the national standard GB / T36643-2018, etc.).

[0056] (5) Strategies and algorithms for collaborative linkage between public video security information and network security protection mechanism

[0057] The strategies for the collaborative linkage between public video security information and network security protection mechanism mainly include five aspects: public security alarm, security event aggregation, security event restoration, threat assessment, and linkage disposal.

[0058] 1) Public security alarm strategy

[0059] According to the functional types of public security devices, public security device alarms can be divided into types such as motion detection, human detection, human body sensing, vehicle type detection, crossing / area detection, face control, and vehicle control. The specific meanings are shown in Table 3.

[0060] Table 3 Public security alarm strategy

[0061] Serial Number Alarm Type Alarm Meaning 1 Motion Detection Moving objects appear in the video device's monitored area 2 Human Detection Moving people appear in the video device's monitored area 3 Human Induction Human induction signal is detected in the sensor device's monitored area 4 Vehicle Type Detection Vehicles appear in the video device's monitored area 5 Crossing / Boundary Detection The video device detects that an object has invaded the warning area 6 Face Surveillance The video device detects the appearance of the monitored person 7 Vehicle Surveillance The video device detects the appearance of the monitored vehicle

[0062] 2) Security incident aggregation strategy

[0063] The alarms generated by public safety equipment are aggregated into the public safety multi-risk linkage analysis and precise early warning system. Based on the preset correlation analysis rules, the system aggregates the alarms from different sources to form a complete public safety event. The event aggregation strategies that can be used include those shown in Table 4.

[0064] Table 4 Event aggregation strategy

[0065]

[0066]

[0067] 3) Security incident recovery strategy

[0068] The main purpose of security incident restoration is to make early predictions and early warnings of security incidents. The way to achieve this is to analyze and restore security incidents that are associated with the public security multi-risk linkage analysis and the precise early warning system. By qualitatively characterizing the stage of the incident, the risk of the incident is assessed to support the decision-making and disposal of the incident. According to the stage of the public security incident, the event restoration results can be divided into four stages: ① On-site investigation, suspicious persons or vehicles stay abnormally near the warning area, or trigger public security personnel or vehicles to deploy alarms; ② Area crossing, suspicious persons or vehicles break through the boundary of the warning area and enter the warning area, but do not break through the physical security facilities; ③ Physical breakthrough, security facilities are destroyed by physical or technical means, and suspicious persons enter the core warning area; ④ Information acquisition, the physical protection measures of critical information infrastructure are completely breached, and the protected information is out of control.

[0069] 4) Threat Assessment Strategy

[0070] Threat assessment mainly extracts threat factors of public safety incidents, including threat object behavior factors (mainly including threat event restoration results, tools or means taken for threat behavior, etc.), threat object status factors (including the distance between the threat object and the protection target or area, the movement status of the threat object, etc.), public safety protection means factors (including security personnel and security tool evaluation, etc.), and performs weighted scoring of threat objects based on threat factors, and determines the threat level according to the scoring results.

[0071] Each type of threat factor, such as threat object behavior factors, threat object status factors, and public safety protection means factors, is scored on a percentage basis. The scoring rules can be as shown in Table 5. The specific rules are determined based on the threat factor extraction of the actual application scenario.

[0072] Table 5 Threat Assessment Strategy

[0073]

[0074] The threat score is denoted as S, and the scores of the threat target behavior factor, threat target status factor, and public security protection means factor are denoted as S1, S2, and S3 respectively. The threat weight calculation formula is as follows:

[0075] S=(S1+S2+S3) / 3

[0076] The greater the threat score, the greater the threat level. According to the threat score, the threatening behavior is rated, as shown in Table 6.

[0077] Table 6 Threat level classification

[0078] Score Threat Level 0-20 Normal 20-40 Low 40-60 Medium 60-80 High 80-100 Extremely High

[0079] 5) Joint disposal strategy

[0080] The security policy visualization system performs security policy inspection and linkage analysis based on the threat assessment results and the current system public security and network security policy configuration, and provides policy configuration suggestions. According to the actual deployment scenario of the system, a variety of security disposal strategies are provided, as shown in Table 7.

[0081] Table 7 Linkage Disposal Strategy

[0082]

[0083]

[0084] At the same time, the threat assessment level can be associated with the linkage disposal measures through system pre-configuration to achieve automatic disposal of public security threats, as described in Table 8.

[0085] Table 8 Threat levels and corresponding disposal strategies

[0086] Threat Level Disposal Strategy Normal None Low System Alarm Medium System Alarm, Early Warning Push High System Alarm, Early Warning Push, Security Enhancement Extremely High System Alarm, Early Warning Push, Security Enhancement, Communication Block

[0087] (6) System implementation of coordinated linkage between public video security information and network security protection mechanism

[0088] From the perspective of software and hardware implementation, the functional module component structures of the public security monitoring platform based on video surveillance, the smart city security strategy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and accurate early warning system are as follows: Figure 3 , Figure 4 , Figure 5 , Figure 6 shown.

[0089] Among them, the main functional modules of the public security monitoring platform based on video monitoring are: networking and sharing module, device access management module, networking gateway module, storage access module, business resource retrieval module, and business storage and management module. The API call interfaces are the interface for obtaining the details of camera monitoring point resources, the interface for obtaining the detailed information of the monitoring point according to the number, the interface for obtaining the detailed information of the bayonet position according to the number, and the interface for performing pan-tilt operation according to the monitoring point number.

[0090] The main functional modules of the smart city security policy visualization system are: asset management module, policy parsing module, policy visualization display module, policy orchestration module, public security incident handling module, and network security incident handling module. The API call interfaces are the intelligent security gateway control policy distribution interface and the network control policy distribution interface.

[0091] The main functional modules of the smart city intelligent security gateway are: wired access functional module, wireless access functional module, cloud platform access module, communication mode support module, and gateway protocol conversion module. The API call interface is the intelligent security gateway control policy distribution interface.

[0092] The main functional modules of the public security multi-risk linkage analysis and precise early warning system are: multi-risk association module, vehicle connection application service module, integrated data management module, map general service module, precise early warning and analysis module, and intelligent parsing and association module. The API call interfaces are the face video surveillance alarm record query interface, single-face picture surveillance interface, interface for obtaining event subscription information according to the type of emergency, and network control policy handling and distribution interface.

Claims

1. A system for the collaborative linkage of public video security information and network security protection mechanisms, characterized in that It includes a public security monitoring platform based on video surveillance, a smart city security strategy visualization system, a smart city intelligent security gateway, and a public security multi-linkage analysis and precise early warning system; The public security monitoring platform based on video surveillance collects and aggregates real-time personnel information and Internet of Things sensor information from cameras distributed at various important locations, and performs formatting and storage logical preprocessing on this information; The public security multi-risk linkage analysis and precise early warning system is based on personnel information and Internet of Things sensor information, conducts security threat monitoring and early warning analysis for single or multiple entities in key locations, and at the same time outputs public security alarm information to the smart city security strategy visualization system based on the VMPN protocol; The smart city security strategy visualization system, based on visualization analysis technology, realizes the generation of security strategies and the orchestration of comprehensive control measures from different perspectives, generates a security configuration file based on public security alarm information; at the same time, sends the security configuration file to network security protection devices that support policy management to control the network security protection devices to generate network control behaviors; The smart city intelligent security gateway, based on the VMPN protocol, receives the security configuration file sent by the smart city security strategy visualization system and controls various smart city sensors connected to it to generate actions; The strategies for the coordinated linkage between public video security information and network security protection mechanisms include: public security alarm strategies, security event aggregation strategies, security event restoration strategies, threat assessment strategies, and linkage disposal strategies.

2. The system for collaborative linkage between public video security information and network security protection mechanism according to claim 1, characterized in that, The public security monitoring platform based on video surveillance, the smart city security strategy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and precise early warning system use standard HTTP interfaces to make data requests in the POST method, and the formats of the request and response data are application / json to achieve the coordinated linkage between public video security information and network security protection mechanisms.

3. The system for collaborative linkage of public video security information and network security protection mechanism according to claim 1, characterized in that, The communication protocol of the public security monitoring platform based on video surveillance, the smart city security strategy visualization system, the smart city intelligent security gateway, and the public security multi-risk linkage analysis and precise early warning system is VMPN, and the VMPN protocol is an application layer protocol.

4. The system for collaborative linkage between public video security information and network security protection mechanism according to claim 1, characterized in that, The specific public security warning strategy is: according to the functional types of public security devices, public security device alarms can be divided into types such as motion detection, human detection, human body sensing, vehicle type detection, crossing / area detection, face deployment control, and vehicle deployment control.

5. The system for collaborative linkage between public video security information and network security protection mechanism according to claim 1, characterized in that, The specific security event aggregation strategy is: the alarms generated by public security devices are aggregated into the public security multi-risk linkage analysis and precise early warning system, and the system conducts associated aggregation on alarms from different sources based on preset associated analysis rules to form a complete public security event.

6. The system for collaborative linkage between public video security information and network security protection mechanism according to claim 5, characterized in that, The specific security event restoration strategy is: analyze and restore the security events associated and aggregated by the public security multi-risk linkage analysis and precise early warning system, evaluate the risks of the events by determining the stages of the events they are in, and support event decision-making and disposal.

7. The system for collaborative linkage between public video security information and network security protection mechanism according to claim 6, characterized in that, The specific threat assessment strategy is as follows: Threat assessment mainly extracts the threat elements of public security incidents, including the behavior elements of threat objects, the status elements of threat objects, and the public security protection means elements. Based on the threat elements, a weighted score is given to the threat objects, and the threat level is determined according to the scoring results. The threat level is divided into: normal, low, medium, high, and extremely high according to the scores of the threat objects.

8. The system for collaborative linkage of public video security information and network security protection mechanism according to claim 7, characterized in that, The specific linkage disposal strategy is as follows: The smart city security strategy visualization system conducts security strategy checks and linkage analysis based on the threat assessment results, combined with the current system's public security and network security strategy configurations, and provides policy configuration suggestions. According to the actual deployment scenarios of the system, multiple security disposal strategies are provided; at the same time, through the system pre-configuration method, the threat assessment level can be associated with the linkage disposal means to achieve automatic disposal of public security threats; the linkage disposal means include system alarms, early warning push, security reinforcement, and communication interruption; Associating the threat assessment level with the linkage disposal means includes: If the threat level is normal, there is no disposal means; if the threat level is low, the system alarm is executed; if the threat level is medium, the system alarm and early warning push are executed; if the threat level is high, the system alarm, early warning push, and security reinforcement are executed; if the threat level is extremely high, the system alarm, early warning push, security reinforcement, and communication interruption are executed.

9. The system for collaborative linkage between public video security information and network security protection mechanism according to claim 1, characterized in that, The main functional modules of the public security monitoring platform based on video surveillance are: network sharing module, device access management module, network gateway module, storage access module, business resource retrieval module, and business storage and management module. The API call interfaces are the interface for obtaining the resource details of camera monitoring points, the interface for obtaining the detailed information of monitoring points according to the number, the interface for obtaining the detailed information of the checkpoint location according to the number, and the interface for operating the pan-tilt according to the monitoring point number; The main functional modules of the smart city security strategy visualization system are: asset management module, policy parsing module, policy visualization display module, policy orchestration module, public security incident disposal module, and network security incident disposal module. The API call interfaces are the intelligent security gateway control policy distribution interface and the network control policy distribution interface; The main functional modules of the smart city intelligent security gateway are: wired access function module, wireless access function module, cloud platform access module, communication system support module, and gateway protocol conversion module. The API call interface is the intelligent security gateway control policy distribution interface; The main functional modules of the public security multi-risk linkage analysis and precise early warning system are: multi-risk association module, vehicle connection application service module, integrated data management module, map general service module, precise early warning and analysis module, and intelligent parsing association module. The API call interfaces are the face video surveillance alarm record query interface, single face image surveillance interface, interface for obtaining event subscription information according to the type of emergency, and network control policy disposal distribution interface.

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