Prison Security Digital Network Monitoring Platform Solution

With the development of surveillance video technology, especially the maturity of digital surveillance systems, video surveillance systems can be more effective in helping prison guards manage and prevent prison security, so that the surveillance system not only stays on the viewing and calling of videos, but also enables prisons to conduct Effective management. The prison surveillance system is characterized by the fact that the general duty room is responsible for scheduling multiple shifts in prison. In addition, there is a monitoring room under the supervision of the armed police department to monitor the perimeter of the perimeter. Under normal circumstances, the armed police and prison guards are independent departments and do not interfere with each other. When there are emergencies, in addition to the prison surveillance room at the upper level of the prison, video can be called at any time. As an emergency command center, the armed police departments also need to know the conditions inside the prison in a timely manner and respond promptly. It can be seen from this that the prison is a multi-level cascading system. In addition to local monitoring, the superior command center and the armed police department of surveillance need to receive and view the prison's alarm information and video in a timely manner.

Prison surveillance and prevention systems require extremely high levels of safety and must ensure high performance and stability. For the prison cell buildings, office buildings, canteens, medical clinics, sports fields, activity areas, wall guard posts, guard towers, entrances and exits double doors, visiting rooms and other places, all-round monitoring. At the same time, modern information systems such as monitoring, monitoring, public broadcasting, access control, perimeter alarm, fire fighting, patrolling, and visiting systems are used in prisons to further improve modern management and better realize civil air defense, technical defense, and material protection. Prevention, to create a comprehensive security system.

Due to the high security requirements, the prison attaches great importance to the construction of various security systems. However, in practical applications, each system is relatively independent. When the related system performs an alarm, it also requires a lot of manpower and material resources to confirm, and the response speed is also ineffective. Secured, there are certain security risks. The user hopes to improve the security management efficiency of the prison through the interconnection and interaction between the systems. When the system alarms, it can automatically correlate the related videos. It is not necessary to manually search for the relevant alarm point videos. At the same time, it is hoped that the relevant alarm information can be automatically Send to upper level. In addition to this, users expect that the system will be available for a long time and will not allow the system to have problems at critical moments. For example, when video recordings are taken at the time of an accident, it is found that the video does not exist, which will have a huge impact on the matter. From this point of view, prisons will require inter-system interactions, and at the same time they must have extremely high stability.

The requirements of the prison management platform With the further development of the network, security system IP has gradually replaced the traditional simulation system, and as a prison security system, it is more obvious. With the development of informatization technology, prisons have also set off a wave of technological reforms to gradually network the system. These systems have a common feature, that is, the diversification of system products. For example, many prisons are gradually upgrading the system and will face the situation of multiple systems and multiple devices coexisting. How to manage the equipment in a unified manner? Will be the one that users face. Therefore, the CMS management platform is required to have extremely strong compatibility, and can integrate IPC, codec, DVR and other devices, and it is required to support the ONVIF/PSIA standard protocol. At the same time, the integrated management platform is required to integrate access control, alarm prevention, fire protection, patrol, intercom systems, etc., and support OPC interface to achieve alarm linkage between video and security subsystems.

The third-party system's drive access is a better integration of third-party systems. The CMS integration platform can be driven in a modular manner, thus enabling any front-end, including network cameras, video servers, DVRs, and third-party alarm systems such as access control and security. The access to the system for defense against intrusion, intercom, fire fighting, and patrolling will all be driven separately and combined with the drive module. In this way, when accessing any front-end device or a third-party system, no other modules can be used for corresponding development and cooperation, which greatly improves the access efficiency of the device and the stability of the entire system.

The integration of intelligent analysis and video intelligent analysis technology is used to monitor prison walls using cross-border inspections, replacing traditional infrared radiation. At the same time, it is also possible to perform statistics on the number of prisoners and monitor off-duty personnel. This can effectively reduce manpower and increase supervision. This requires that the CMS modular bottom layer be robust enough to support the integrated platform to be compatible with the current domestic and international mainstream intelligent analysis products, such as OV, IOmniscient, Zhuo Yang, and other hardware and software intelligent analysis products, to achieve alarm-driven linkage function. Taking a labor camp in Sichuan as an example, as a reconstruction of the earthquake-hit area, the Sichuan Provincial Government requested that it establish an information-based demonstration unit for the labor camp, put forward new requirements for security monitoring, and conduct more effective monitoring of prisoners. In the area of ​​prisoners’ activities, the number of people required to be used for statistics, emergency alarms were handled when there were changes in the number of people, and prison officers were monitored for off-duty and drowsiness and were recognized by the Sichuan Provincial Government.

The large networked platform is compatible with security monitoring. With the trend of “digital, intelligent, and networked” development, the demand for cross-regional monitoring and management of various industries is constantly increasing. Network monitoring has become the core business requirement of security systems. In the prison industry, the demand for large-scale network monitoring is even more prominent. Since the occurrence of "hide and seek" and "escaped prisons", the state has brought prison network monitoring to a new height. Taking Sichuan Province as the representative, it has started to propose the province's prisons for online monitoring. In order to realize cross-regional and large-scale unified management, in addition to requiring the system to have access to a large number of devices, the system is modularized and layered, and the system is required to provide a standardized interface that allows video data to interface with higher and lower levels of the platform. Realize the integration.

The management platform should have the features and capabilities of multi-level streaming media cascading in the prison solution, multi-level streaming media cascading, multi-layer architecture to meet customer needs. A streaming media server is set up in the main room to perform video recording of alarm linkage on the global video. At the same time, the NVR server is set in each duty room to store the video for a long time. When the prison guards watch the video in the watch room in the duty room, the video only needs to obtain data from the NVR in this duty room instead of the video stream from the main room, which can save the video backhaul bandwidth and when the duty room arrives When the fiber in the main room is destroyed, the prison guard in the duty room can also see the front-end situation in the area, ensuring that the video can continue to be recorded in a short period of time to facilitate the collection of evidence. When remotely viewing other prison departments or superior monitoring rooms, you can view the video from the streaming media server in the computer room to facilitate the maintenance and unified management of the equipment. For alarm-linked video, the importance is very high, and it is often the key to event forensics. Backup storage is performed at the monitoring center to reduce the risk of video data being destroyed.

Careful authority management Prison system is clearly defined in terms of responsibilities, different roles are clearly defined, different roles have different management rights, and the security system is also in line with the rules of the prison system. Although the network is fully connected, each duty room has the rights of the duty room user and can only view videos of the duty area in charge. Only users with higher privilege can log in to the system and view the videos owned by the user. When multiple users want to control the front-end dome, the rights management allows the high-level user to have priority control. Only when the high-privilege user releases control, the low-privilege user allows control. Different duty rooms cannot override the areas controlled by other duty rooms. They must have higher control rights and have PTZ priority privilege. When they want to control, they will snatch user rights with lower priority and perform PTZ. control.

Wit alarm handling The prison monitoring system can also be more closely controlled by the prison's alarm system. After the current party triggers an alarm (the alarm includes a third-party alarm system or intelligent analysis system), it will alert the police in the duty room to which it belongs. If the prison guard is If the alarm is not processed within the specified time, the alarm signal is automatically sent to the higher duty room.

In the upper-level monitoring room, when it is not necessary to browse all front-end videos at ordinary times, it is only necessary to use the alarm as a driver to view the video, so that it is possible to avoid human-induced omissions, resulting in an unattended situation. When the on-duty personnel confirm that the alarm signal of the key supervisory warehouse is not a false alarm, the system transmits the alarm signal directly to the warden. In addition, the processing time of the alarm can be exported to a report based on the requirements, and the response time of each alarm can be recorded as an assessment basis.

The system supports manually pushing the alarm signal to any given user client in the network to display the alarm video. When a duty officer finds that there is a major alarm event, he can manually send the relevant alarm information to the master control center, request assistance, and perform comprehensive emergency response handling.

M+N Redundancy For a traditional DVR system, each DVR carries approximately 16 channels of video signals, and the range affected by the failure of one DVR is still limited. However, in the era of digital surveillance, each NVR can store up to 100 channels of video storage, forwarding, alarm and other signals. One NVR fails and the affected range will be even larger. However, it is a requirement that the electronic device should not be faulty. Impossible tasks, so we must find a solution to ensure that the system is operating normally 24 hours a day.

After long-term research and practical testing, it is recommended to use the redundancy strategy of M+N to solve this problem. When M servers are recording, the central management module (CMS) periodically sends heartbeat signals to the servers in operation. One of the servers fails, and the CMS can return to the discovery server via the heartbeat timeout. At this time, the CMS can send the camera connected to the failed server to one of the N backup servers and activate the backup server to connect the camera. The time of this handover process depends on the network conditions and is less than 30 seconds when the network conditions are normal. After the failed server is repaired, the CMS detects the failure of the server to restore the connection, and then moves the camera connection back to the original server, and the backup server also migrates its own recording data back to the original server for storage. After the migration is completed, the backup server continues to be at standby mode. The number of servers that the system can allow for simultaneous errors depends on the number of backup servers, M. If M is 3, three servers can be allowed to be offline and the system can continue to operate normally without loss of large-area video. With this strategy, the system can be made available for a long time to meet the prison's high availability requirements for the monitoring system.

In the prison, different redundant groups can be divided according to different monitoring areas and different security levels. For example, for the key areas such as guard posts, watchtowers, and entrance/exit double doors, 1+1 hot standby redundancy can be used; For areas such as activity areas, sports fields, and canteens, 10+2 redundancy can be used in areas where safety levels and accident rates are not high. After dividing different server groups into different redundancy groups, it is possible to achieve different levels of redundancy in different areas of the same prison security system, and obtain more valuable services in limited capital investment.

Zero Loss of Data Due to the long-term operation of electronic equipment, electronic components may malfunction, requiring regular maintenance after running for a period of time, and system stability has always been the key to maintenance. Based on the redundant system, the CMS system proposes to provide users with a solution to maintain zero data loss. The biggest difference between the system and the redundant system is that the maintenance system manually confirms that the server enters the maintenance state. The CMS knows that a server needs to be down. The central management module (CMS) will start the backup server first. When the backup server starts up, it will notify the original server that it can shut down. By means of confirmation, it is guaranteed that no data will be lost during the maintenance. In this way, the security system is guaranteed to operate stably.

For some super-precautionary areas in prisons, such as the entrance and exit of prisons, they require 24-hour video recording. In order to ensure the good operation of the system, the hardware must be maintained on a regular basis. How to avoid data loss during maintenance? What? Multiple data zero lost backup servers can be deployed in the local monitoring center of the prison. When a server in the system needs to be shut down for maintenance, the backup server is started first, and then the backup server takes over the work and then maintains the server. .