Introduction and analysis of the construction of a prison security system in Hubei
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background profile
The security problems of prisons include criminals escaping and being involved in prisons. In the case of a serious shortage of police force, it is difficult to achieve real-time supervision. Criminals use the blind spots of surveillance to escape and be involved in prisons. A large part of the criminals detained in this prison are new criminals. The characteristics of new criminals in the early stage are that their emotions are not very stable. Especially when they are affected by the external environment, their behavior will be out of control and do things that endanger themselves or others. For example, during the implementation of the project in the prison, a prisoner swallowed his toothbrush down his throat and tried to commit suicide after reading the family letter. Because it was during the day, other criminals and police officers were nearby, so they discovered it in time and hurriedly sent him to the prison. To the hospital for rescue, to avoid the accident. If the criminal committed suicide in a place with no one at that time, the consequences can be imagined. Therefore, the establishment of a complete set of security mechanism is an urgent problem to be solved in prisons at present.
The prison security guarantee mechanism should be supported by prison functions such as security prevention, in-prison investigation, and emergency response. It is not only necessary to monitor various areas of the prison in real time, but also to monitor the location of prisoners and control the various states of prisoners in real time. The monitoring system of the prison has 1,000 cameras, and it is limited to monitor each camera area only by manpower. Video monitoring can neither meet the requirements of the time out of control, nor can it meet the requirements of all spatial points, the behavior status of criminals , the management of criminals, and the relationship between criminals and police officers cannot be fully and effectively monitored. Only through advanced technical means, the use of wireless positioning technology to track the moving target objects in the prison in real time, and then grasp the various behavioral states of criminals and avoid conflicts and other behaviors. In order to detect the abnormal behavior of criminals in time, to prevent criminal escapes, abnormal deaths, group fights and other major cases, advanced technical means must be used to analyze abnormal situations in real time, and integrate video systems with alarm systems, intelligent analysis systems, access control systems and other security systems. Carry out linkage operation to improve emergency response speed.
construction needs
Generally speaking, the prison has the following needs.
Security system linkage requirements
The security subsystems currently under construction in the prison include video surveillance system, access control management system, AB door management system, patrol system, intercom system, perimeter alarm system, microwave alarm system, broadcasting system, power grid system, and intelligent analysis system. , Family telephone system, one-card management system, patrol system. If each system requires manpower to monitor the operation, it will be a great waste of police force. Therefore, a platform is needed to integrate all systems, and to monitor all networked audio and video information, access control card information, alarm information, intercom information, Unified management and scheduling of broadcast information and all-in-one card consumption information. After receiving the alarm information, the alarm personnel will register and verify the alarm information. When the police situation is high, it will automatically link to the large screen, output the scene image to the TV wall, and link the broadcasting system to broadcast or shout. If it is a serious police situation, it needs to be reported to the prison leader, and after approval by the prison leader, it needs to be reported to the command center of the Prison Administration.
Three-level authority management requirements
The prison’s permission requirements for the system are divided into three levels. The third level: monitoring and management system of the sub-supervision area, the authority of the sub-supervision area management system is only to manage the equipment on each floor of the prison, including monitoring images, alarm information, intercom information, etc.; the second level: monitoring and management of the supervision area System, the authority of the prison management system can manage all the equipment and information of a prison; the first level: the prison command and management center, the prison command and management center has the management authority of all equipment.
Centralized storage management needs
There are many cameras in the prison, and only real-time image monitoring cannot meet the requirements of the off-line time. All video surveillance images need to be stored. When suspicious signs of criminals are found, the stored images can be played back to further understand the real-time dynamic information of criminals. , the prison can take corresponding actions to prevent further incidents.
At present, video surveillance storage methods are generally divided into distributed storage and centralized storage. Distributed storage is traditional DVR and NVR storage; centralized storage uses IP-SAN for storage.
The advantages of using centralized storage are many.
1. Large capacity and low cost. The IP-SAN centralized storage can store more than 128 channels and save the storage video for 30 days.
2. High reliability and strong stability. IP-SAN modules are generally hot-swappable, which can greatly reduce human error. The system supports hard disk RAID to ensure long-term reliable and stable data operation.
3. Strong maintainability. IP-SAN is based on the TCP/IP transmission protocol, and the management of non-traditional FC-SAN is simpler. The technical requirements for technicians are also relatively low.
Business deep integration requirements
The prison security integration platform not only collects audio and video information, alarm information, and card swiping information, but also needs to know the basic information and other information of criminals in time through alarm information or card swiping information, which requires the integration of criminal information and police information on the integrated platform. Once an abnormal state occurs, all relevant data required can be deployed in time to quickly control the occurrence of the event. The prison security integration platform also needs to deeply integrate each system, and realize the control function of the AB door in the prison security integration platform. When a major alarm occurs, the AB door can be locked with one key to prevent the situation from further deterioration.
Behavioral Rules Analysis Requirements
For the status information of criminals, real-time monitoring cannot meet the requirement of off-line time. It is necessary to set certain rules for the image through the intelligent analysis system. Once the criminal’s behavior conforms to this rule, an alarm message will be generated, and the video image will be linked at the same time. For example, a line is drawn on the perimeter. When the criminal crosses this line, the system immediately alarms. The on-duty personnel take timely measures through the linked images to prevent the occurrence of the incident.
Emergency command and management needs
Emergency command is to conduct on-site command by the leaders of the Prison Administration or the prison after a major police situation occurs to prevent the situation from further worsening. Through the analysis of criminal information and incident situation, comprehensive assessment of the situation, deployment of police force and resources, dispatch of on-site surveillance video, centralized control of security equipment, to achieve the purpose of quickly controlling the police situation.
Video conferencing needs
Video conference is when a major police situation occurs, through the video conference system, contact technical experts and leaders at all levels to hold an on-site meeting, discuss the development of the situation, and come up with reasonable solutions.
Construction goals and ideas
In response to the above needs of the prison, we have formulated the following construction goals and ideas.
1. The network covers the entire prison, and finally three networks are built: monitoring private network, office private network, and provincial bureau private network. The backbone network of the monitoring private network is a 1000M network for the transmission of audio and video information and alarm information. Ensure the normal operation of the prison security system.
2. In the prison command center, build a single-screen prison security integrated platform, a dual-screen prison security integrated platform, an emergency command system, a video conference system, and an equipment operation and maintenance management system.
The single screen of the prison security integrated platform monitors key areas, such as prison walls. Usually, the images of key areas are transmitted to the large screen through the IP matrix, which is convenient for real-time monitoring.
The prison security integrated platform has dual screens to receive the alarm information of each system. If an alarm occurs, the alarmed area will be displayed on the dual-screen electronic map immediately, and the image information of the area will be displayed on the video surveillance screen, and the image of the area will be sent to the Big screen.
The emergency command and video conferencing system is used by leaders in the event of a major police situation. It can conduct audio and video intercoms with the emergency center of the Prison Administration, as well as audio and video intercoms with the on-duty personnel in the prison area.
The equipment operation and maintenance management seat mainly monitors the central server and client equipment. When a server fails, the system will notify the duty personnel in time to ensure the normal operation of the system.
3. Deploy central server, streaming media server, storage server, IP-SAN, device access server, database server, GIS data server, and intelligent analysis server in the prison computer room.
case analysis
After full communication and communication with users, we have formed a complete technical solution, which has the following important features.
High integration, improve prison work efficiency
Prisons bear the major responsibility of maintaining social stability, and their security mechanisms should be the best. All security systems are responsible for prisons, but with more systems built, the required police force will also increase. When the existing police force is insufficient, At this time, it is necessary to consider management through technical means, and each security system can be managed through the prison security integration platform.
When an alarm occurs in other subsystems, it can link the camera on demand, link snapshot, and link OSD in the prison security integrated platform. If the SMS module is installed, it can also link SMS, and send the alarm information to the prison leader in the form of SMS.
Multi-level system architecture, good scalability
After the construction of the prison system is completed, the next step is to network with the prison management system. The prison security system can be directly connected with the prison administration system, not only the prison security integrated platform can be connected with the prison administration, but also the emergency command system can be connected with the prison administration.
When a major police situation occurs, the prison monitoring center can directly report the alarm information to the prison management bureau through the prison security integrated platform. The prison management bureau can directly receive the alarm information in the command system, activate the emergency command system, and transmit the image of the prison. Go to the Prison Administration, and the Prison Administration Command Center will conduct command and dispatch according to the on-site situation.
Advanced technology and good performance
Advanced IP cameras are used, and images are stored in a centralized manner. Each storage server stores at least 128 images, and there is no image loss in video files. All images are stored in IP-SAN, and the IP-SAN hard disk is RAID5 to ensure the stability of the stored data. sex.
Real-time monitoring of equipment, good maintainability
The system operation monitoring terminal is configured in the prison command center. The system operation monitoring terminal can monitor the network traffic of the system and the running status of each device in real time, such as CPU usage, network inbound and outbound traffic, memory occupation, device running time, hard disk capacity, etc. The system focuses on the detection of the operating status of the front-end encoding equipment. The parameters that can be detected are: network traffic, CPU usage percentage, memory usage, hard disk capacity, remaining space, recorded video, defense status, and whether video is lost.
Through the equipment operation and maintenance management system, the operating status of each system and equipment can be monitored in real time, and problems can be found and recovered in time once a situation occurs.
Permissions are grouped flexibly, reducing system misoperation
User rights are divided into three types: system administrator, operator, and common user. Fine-grained management of user permissions. Such as: prohibit login, system settings, real-time browsing, whether to allow browsing of confidential channels, PTZ control, alarm control, video data retrieval, playback, download and so on.
All user rights settings and changes are centralized on the central server, the number of users is not limited, and user rights can be set at will. No matter where the user is or which computer they use, as long as they log in to the central server and pass identity authentication, they can obtain a list of resources within their authority and access authorized devices. System administrators can adjust users and user rights at any time according to management needs, which ensures the security and real-time performance of management.
construction effect
The prison monitoring system collects all on-site information, including video and audio information and alarm information, collected by IP cameras, pickups and other equipment. The monitoring center will realize one-to-many (one management client simultaneously connects and monitors monitoring targets in multiple monitoring sites) and many-to-one (multiple management clients monitor monitoring targets in one monitoring site at the same time) in various ways. Real-time monitoring function.
When a specific alarm situation occurs (such as: illegal intrusion of personnel, equipment status change and failure, etc.), the system will receive the corresponding alarm information, and according to the preset linkage strategy, the corresponding equipment around the alarm target will be processed for processing, such as : Start the sound and light alarm box monitoring the scene, send out sound and light alarms to deter the scene, and at the same time link the corresponding lighting equipment (such as: searchlights, etc.) to provide sufficient lighting for the scene, and control the corresponding camera to rotate to the designated preset position. Recording, snapshot and other related operations. The alarm information can be seamlessly combined with the video and snapshots, and the corresponding on-site video and snapshots can be retrieved and played back from the alarm information, so as to be a powerful auxiliary means for future accident tracking and investigation.
When multiple alarms occur at the same time in the monitoring site, the system will process them according to the principle of alarm level and time priority. The video and audio of the serious alarm points will be uploaded first, and the alarms of the same level will be uploaded in the order of time priority.
At present, the construction of the prison system has been completed and put into use, the work efficiency of the personnel on duty has been significantly improved, and the occurrence of police situations has been greatly reduced.
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