CN102300082A - Digital video monitoring system and method for nuclear power plant - Google Patents

Abstract

The invention discloses a digital video monitoring system and method for a nuclear power plant, wherein the digital video monitoring system includes: an IP network camera for collecting video data of a monitoring site; a switch unit connected to the IP network camera through an access switch to obtain The video data from the core switch is aggregated to the core switch; the background control center centrally stores the video data obtained from the core switch; the remote user terminal group obtains and plays video data from the background control center through the internal dedicated network of the nuclear power plant. The invention realizes all networked management of the digital video monitoring system, adopts a standard network protocol to improve the stability and reliability of the video monitoring; at the same time, it does not need equipment such as a codec, and the wiring is simple, reducing the cost of the digital video monitoring system.

Description

A nuclear power plant digital video monitoring system and method

technical field

The invention relates to the technical field of nuclear power, in particular to a digital video monitoring system and method for a nuclear power plant.

Background technique

The video surveillance system is an important part of the safety protection system of nuclear power plants. The main purpose of the system is to prevent illegal entry and monitor various entrances and exits, borders and important areas. The establishment of the video monitoring system, on the one hand, serves as a deterrent to lawbreakers and prevents them from happening; on the other hand, the video monitoring system is an important subsystem for the implementation of the "detection-delay-response" function of the physical protection system of the whole plant. The camera image can be quickly and accurately positioned and alarmed to review, realize the effective detection function of the physical protection system, and thus organize an effective response to ensure reliable and effective protection of the safe operation of the nuclear power plant and the safety of nuclear materials. The video monitoring system in the prior art is composed of four main parts, namely, a front-end image acquisition part, an intermediate transmission part, a back-end image control and storage part, and an image display part.

1) Front-end image acquisition part: the front-end cameras are all analog cameras, and the analog video signal is converted into a digital video signal through a video encoder, and connected to the physical protection dedicated LAN of the physical protection system of the factory in the form of IP data packets; through the network switch, all video surveillance images are finally transmitted to the security control center.

2) Intermediate transmission part: the front-end analog camera is transmitted to the security control center and the equipment room at the camera access point through the SYV 75-7 video cable (within 300 meters) or single-mode optical fiber (within 20 kilometers), and first through video encoding After the image signal is converted into a digital signal by the device, it is connected to the switch of the special LAN of the physical protection system in the factory area, and the digital video signal is finally transmitted to the security control center through the LAN.

3) Back-end image control and storage part: the management control center of the system is established in the security control center, connected to the front-end cameras, and can manage the monitoring images of all front-end cameras. The control center is equipped with monitoring workstations, codecs, network switches, storage devices, consoles and other equipment.

4) Display device: Through the decoder, the on-site video information is displayed on the monitor set in the control center and the DLP large screen to form a TV wall.

In the existing technical scheme, the front-end cameras are all analog cameras, and the analog video signal is converted into a digital video signal through a video encoder, and connected to the physical protection dedicated LAN of the physical protection system of the factory in the form of IP data packets; , all video surveillance images are finally transmitted to the security control center. The wiring of the entire system is complicated, it is not easy to operate, and the scalability of the entire system is not strong.

Contents of the invention

The technical problem to be solved by the present invention is to provide a nuclear power plant digital video monitoring system and method with simple wiring and good scalability for the defects of complex wiring and limited expansion of the nuclear power plant video monitoring system in the prior art.

The technical solution adopted by the present invention to solve its technical problems is:

The invention provides a nuclear power plant digital video monitoring system, comprising:

IP network camera, used to collect video data of monitoring places;

A switch unit, including a core switch and an access switch connected thereto, the access switch is connected to the IP network camera, and converges the video data obtained from the IP network camera to the core switch;

The background control center is connected with the core switch, and is used to centrally store the video data obtained from the core switch;

The remote user terminal group is used to obtain and play the stored video data from the background control center through the internal private network of the nuclear power plant through the TCP/IP protocol.

In the nuclear power plant digital video monitoring system described in the present invention, the IP network camera is also used for alarming.

In the nuclear power plant digital video monitoring system according to the present invention, the IP network camera and the switch unit perform data transmission through a shielded twisted pair or an optical cable.

In the nuclear power plant digital video monitoring system according to the present invention, the remote user terminal group includes a remote user terminal in the main control room and a remote user terminal in a workstation, wherein the remote user terminal in the main control room is connected to a video wall and a remote user terminal through a switch in the main control room. The control keyboard, the main control switch is connected to the internal private network of the nuclear power plant, and the remote user terminal in the main control room and the control keyboard control the broadcasting of the video wall through the switch in the main control room.

In the nuclear power plant digital video monitoring system according to the present invention, the background control center includes a central management server, a streaming media controller, a network video server group and a disk array group respectively connected to the core switch, wherein the central management The server is used to control the IP network camera; the streaming media controller is used to control the storage of the video data stream on the disk array group and the transmission of the video data stream through the internal dedicated network of the nuclear power plant; the network video recording server group It is used for storing the video of the IP network camera in a preset time period before and after the alarm according to the alarm of the IP network camera.

In the nuclear power plant digital video monitoring system of the present invention, the remote user terminal of the workstation performs video monitoring according to the authority of the user.

Another technical solution adopted by the present invention to solve its technical problems is:

A method for digital video monitoring of a nuclear power plant is provided, comprising the following steps:

Obtain the video data of the monitoring site through the IP network camera;

Gathering the video data obtained by the IP network camera to the core switch through multiple access switches;

Obtain video data from the core switch for centralized storage;

The stored video data is acquired and played from the background control center through the internal dedicated network of the nuclear power plant through the TCP/IP protocol.

In the nuclear power plant digital video monitoring method described in the present invention, it also includes the step of: according to the alarm of the IP network camera, the video of the corresponding IP network camera in the preset time period before and after the alarm is stored.

In the nuclear power plant digital video monitoring method described in the present invention, the IP network camera is also used for alarming.

In the nuclear power plant digital video monitoring method of the present invention, according to the alarm of the IP network camera, a network video server group is used to store the video of the IP network camera for a preset time period before and after the alarm.

The beneficial effects produced by the present invention are as follows: the digital video data is collected through the IP network camera, and the collected video data is transmitted through the switchboard and the internal dedicated network of the nuclear power plant, so as to realize the entire network management of the digital video monitoring system and adopt a standard network protocol The stability and reliability of video monitoring are improved; at the same time, equipment such as a codec is not needed, wiring is simple, and the cost of a digital video monitoring system is reduced.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is the structural representation of the nuclear power plant digital video surveillance system of the embodiment of the present invention;

Fig. 2 is the structural representation of the nuclear power plant digital video surveillance system of another preferred embodiment of the present invention;

Fig. 3 is a flowchart of a digital video monitoring method for a nuclear power plant according to an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figure 1, the nuclear power plant digital video surveillance system mainly includes an IP network camera 10, a switch unit 20, a background control center 30, and a remote user terminal group 40. The system realizes IP network surveillance and can make full use of the optical fiber network. Network interface, all devices exchange video and data information through TCP/IP protocol, so as to achieve complete digitization and networking. in,

The IP network camera 10 is used to collect the video data of the monitoring place. There can be multiple IP network cameras, such as IP network camera 10a, IP network camera 10b, IP network camera 10c...IP network camera 10n, megapixel IP cameras are high-definition and high-resolution products, which are required in nuclear power plants Install multiple IP network cameras, including inside and outside the factory area, such as in the main control room, main entrance and exit of the factory area, so that the equipment and personnel can be clearly seen; it must also be installed on the protective fence outside the factory area Multiple IP network cameras, IP network cameras shoot digital video data directly, so there is no need for codec and other equipment, and digital video data can be directly transmitted through the network.

Switch unit 20, which includes a core switch 22 (i.e. a core layer switch) and a plurality of access switches (i.e. an access layer switch) connected thereto, such as access switches 21a, 21b and 21c, etc., a plurality of access switches and IP Network cameras 10 are connected, and all IP network cameras are connected according to partitions. The IP network cameras in each area are all connected to the nearby regional switch according to the principle of connecting the IP network cameras to the nearby access switch by using a 100M network; The ingress switch and the core switch are connected by optical fibers, and converged to the core switch. The camera itself can be integrated with an alarm function, which can monitor and alarm the main control room, the main entrance and exit, and the perimeter, as well as on-site warnings.

The background control center 30 is connected with the core switch 22, and is used for centrally storing the video data obtained from the core switch 22, and can also control the separate storage and transmission of the specified video data, such as the monitoring data of each camera can be specified to be stored to the desired location of the user. on any computer on the network. For the control authority, the administrator sets the corresponding control authority and login scope according to the control level of different personnel.

The remote user terminal group 40 is used to acquire and play video data stored in the background control center through the internal private network of the nuclear power plant through the TCP/IP protocol. On the remote user terminal, centralized management software can be run to realize multi-screen Monitor the monitoring images in the whole factory area; at the same time, you can also connect to DLP (DLP: Digital Light Processing, that is, digital light processing, which first processes the image signal through digital processing, and then projects the light out through the imaging technology ) large screen, set the front-end images to the large screen for viewing.

As shown in Figure 2, the remote user terminal group includes the remote user terminal in the main control room and the remote user terminal in the workstation, wherein there can be multiple remote user terminals in the workstation, and the remote user terminal in the main control room is connected to the TV wall and the remote user terminal through the switch in the main control room. The control keyboard and the main control switch are connected to the private network inside the nuclear power plant. The remote user terminal and the control keyboard in the main control room control the playback of the TV wall through the switch in the main control room. The remote user terminals of multiple workstations are connected to the internal private network of the nuclear power plant, and the terminals are connected to the private network through routers and switches, and the terminals are logged in through user names and passwords, and real-time monitoring or event history query and monitoring management can be performed according to the permissions of the user names.

In the digital video monitoring system of the nuclear power plant in the embodiment of the present invention, the IP network camera and the switch unit 20 perform data transmission through a shielded twisted pair or optical cable, so as to well prevent environmental interference.

As shown in Figure 2, the background control center includes a central management server, a streaming media controller, a network video server group and a disk array group respectively connected to the core switch, wherein the central management server is used to control IP network cameras, such as controlling which The IP network camera is turned on, and the opening and closing time, etc.; the streaming media controller is used to control the storage of the video data stream on the disk array group and the transmission of the video data stream through the internal dedicated network of the nuclear power plant, such as transmission to the remote user terminal in the main control room, It can be displayed on the TV screen; the network recording server group is used to separately store the video of the corresponding IP network camera in the preset time period before and after the alarm according to the alarm of the IP network camera, so as to view all the video recordings before and after the alarm, and analyze which situations may False alarms are generated, or the cause of the alarm is analyzed according to the video recording, and the specific situation of the emergency is known.

As shown in Figure 3, the embodiment of the present invention provides a nuclear power plant digital video monitoring method, comprising the following steps:

S1. The digital video surveillance system obtains the video data of the surveillance site through the IP network camera;

S2. The digital video monitoring system aggregates the video data acquired by the IP network camera to the core switch through multiple access switches, and the IP network camera can be connected to the access switch in the nearby area;

S3. The digital video monitoring system obtains video data from the core switch for centralized storage, and at the same time controls the storage and transmission of specified video data; such as controlling which IP network cameras are turned on, and the opening and closing time through the central management server; through streaming media control The controller controls the storage of the video data stream on the disk array group and the transmission of the video data stream through the internal dedicated network of the nuclear power plant; through the network video server group, according to the alarm of the IP network camera, the video of the corresponding IP network camera in the preset time period before and after the alarm is separately stored wait.

S4. The digital video monitoring system transmits the stored video data through the TCP/IP protocol to the authorized remote client terminal group for monitoring through the internal dedicated network of the nuclear power plant, such as controlling the TV wall through the remote user terminal in the main control room to display on-site monitoring video, or Log in through the remote user terminal of the workstation, and perform video surveillance according to the authority.

Further, the IP network camera in the embodiment of the present invention is also used for alarming. In addition, according to the alarm of the IP network camera, the network video server group can be used to store the video of the IP network camera for the preset time period before and after the alarm.

The present invention collects digital video data through an IP network camera, uses the standard TCP/IP protocol to transmit the collected video data through a switch and a dedicated network inside the nuclear power plant, and realizes the entire network management of the digital video monitoring system, and adopts a standard network The protocol improves the stability and reliability of video surveillance; at the same time, it adopts all-digital network transmission, no codec and other equipment is needed, the wiring is simple, the cost of the digital video surveillance system is reduced, and the scalability of the entire system is improved.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. A nuclear power plant digital video surveillance system, characterized in that it comprises: IP network camera, used to collect video data of monitoring places; A switch unit, including a core switch and an access switch connected thereto, the access switch is connected to the IP network camera, and converges the video data obtained from the IP network camera to the core switch; The background control center is connected with the core switch, and is used to centrally store the video data obtained from the core switch; The remote user terminal group is used to obtain and play the stored video data from the background control center through the internal private network of the nuclear power plant through the TCP/IP protocol. 2. The nuclear power plant digital video surveillance system according to claim 1, wherein the IP network camera is also used for alarming. 3. The nuclear power plant digital video monitoring system according to claim 2, wherein the IP network camera and the switch unit perform data transmission through a shielded twisted pair or an optical cable. 4. nuclear power plant digital video monitoring system according to claim 3, is characterized in that, described remote user terminal group comprises main control room remote user terminal and workstation remote user terminal, and wherein said main control room remote user terminal passes main control room The switch in the room is connected with a TV wall and a control keyboard. The main control switch is connected to the internal private network of the nuclear power plant. The remote user terminal in the main control room and the control keyboard control the playback of the TV wall through the switch in the main control room. 5. nuclear power plant digital video monitoring system according to claim 4, is characterized in that, described backstage control center comprises the center management server that is respectively connected with described core switchboard, stream media controller, network recording server group and disk array group , wherein, the central management server is used to control the IP network camera; the streaming media controller is used to control the storage of the video data stream on the disk array group and the transmission of the video data stream through the internal dedicated network of the nuclear power plant ; The network video recording server group is used to store the video of the IP network camera for a preset time period before and after the alarm according to the alarm of the IP network camera. 6. The nuclear power plant digital video surveillance system according to claim 4, wherein the remote user terminal of the workstation performs video surveillance according to the authority of the user. 7. A nuclear power plant digital video monitoring method, is characterized in that, comprises the following steps: Obtain the video data of the monitoring site through the IP network camera; Gather the video data obtained by the IP network camera to the core switch through the access switch; The background control center obtains video data from the core switch for centralized storage; The stored video data is acquired and played from the background control center through the internal dedicated network of the nuclear power plant through the TCP/IP protocol. 8. nuclear power plant digital video monitoring method according to claim 7, is characterized in that, also comprises the step: according to the video of the corresponding IP network camera of preset time period before and after the alarm storage of described IP network camera. 9. The nuclear power plant digital video monitoring method according to claim 8, wherein the IP network camera is also used for reporting to the police. 10. nuclear power plant digital video monitoring method according to claim 9, is characterized in that, According to the alarm of the IP network camera, the network recording server group is used to store the video of the IP network camera in the preset time period before and after the alarm.

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