Application scheme of high-definition video surveillance in hospital security
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The hospital is a special public place with many patients, complicated entry and exit, and large cash flow. Therefore, the hospital’s fire prevention, theft prevention, and public security prevention all require the use of technical means for security precautions. The high-definition video surveillance system is used here to ensure the safety of hospital staff and patients through high-definition images.
market background
With the acceleration of the construction of “Safe Hospitals”, the hospital security market has also expanded. Many hospitals integrate medical treatment, teaching, and scientific research. Due to the complexity of their functions and processes, security work has received great attention from the society. In order to promote the healthy development of health services, seven ministries and commissions including the Ministry of Health jointly issued the “Recommendations on the Establishment of “Safe Hospital” Activities”. Hospital security brings strong development momentum and development ideas. It is very necessary to establish a systematic and efficient security system, and it is also an important issue faced by most hospitals.
Project Introduction
High-definition video surveillance is used in hospital security. Take a hospital as an example. The hospital currently monitors locations with frequent security incidents through DVR monitoring. However, due to technical reasons, most of the surveillance systems that have been built have poor image clarity, difficult image query, unsatisfactory system management, and many inconveniences in application.
The hospital’s security project renovation will retain some of the original analog surveillance cameras to save part of the investment, and all other surveillance points will be newly built. Because there are many monitoring areas, the layout is relatively scattered, and there are many monitoring points required. If the design and construction are carried out according to the traditional monitoring system mode, many lines and pipelines must be laid between the hospital buildings, which will affect the cleanliness and cleanliness of the hospital. Beautiful and overall appearance, while increasing the investment of human and financial resources, increasing the total cost of the integration project, and the complicated wiring will also cause potential failures. Therefore, comprehensive factors in all aspects, and full consideration of the video surveillance system The hospital decided to set up an advanced and efficient high-definition network video surveillance system.
Project needs and expected results
To improve the management level and efficiency of the hospital through high-tech means, the informationization of the hospital is the key to improving management, and the management of safety, medical order and environment is its main content. The realization method is to build a safe and reliable management information platform through systems such as video surveillance, anti-theft alarm, access control, electronic patrol, explosion-proof safety, and hospital information network. Through this platform, people’s visual, audio, information transmission, execution, etc. can be expanded to meet the unique business needs of the hospital, thereby reducing manpower, improving efficiency, and realizing modernization, standardization, scientification, and intelligence of hospital management, providing medical staff and Patients provide a high-quality, safe and orderly modern medical environment, and at the same time supervise the quality of medical services, improve the office efficiency of medical staff, and protect the personal safety of medical staff and hospital property.
system structure
The new monitoring points in this project adopt megapixel high-definition cameras for important guarding positions, and other guarding areas adopt infrared integrated network cameras, day and night low-illumination network cameras, network high-speed spherical cameras, indoor PTZ cameras, day and night based on environmental conditions. Type integrated zoom network gun-shaped camera, elevator megapixel network dome camera, network dome camera, etc.
Some analog cameras of the original system continue to be used, and seamlessly integrate with the new system by adding video encoder equipment.
The storage time of each channel of surveillance video is 24 hours × 30 days; the resolution of the SD camera video image is not less than 720×576, and the frame rate is not less than 25fps; the megapixel gun camera video image resolution is not less than 1280×960, and the frame rate is not less than Not less than 15fps.
The monitoring center uses LCD monitors, LCD splicing screens, and large DLP screens to monitor and display images in real time based on the actual layout.
The backbone line uses optical fiber transmission, the transmission rate is not less than 1000Mbps, and the future 10 Gigabit expansion interface is reserved; the access line uses unshielded super five twisted pair transmission, the transmission rate is not less than 100Mbps; the access line should have a supply of 12V The function of direct current is to meet the PoE power supply requirements of the front-end camera; the video storage system should consider the uninterrupted data writing and reading and the large amount of data, and take necessary measures to ensure the bandwidth. According to the performance of the switch equipment, the number of cameras and encoders, the configuration and number of access switches, aggregation switches and core switches are selected.
Power supply system requirements, equipment power supplies have relay protection functions, and a set of uninterruptible power supplies that meet the entire system should be configured.
The lightning protection of outdoor cameras shall be designed with reasonable and necessary lightning protection in accordance with GA/T 670-2006 “Technical Requirements for Lightning and Surge Protection of Security Systems”.
High-definition digital integrated management platform
The integrated management platform software should be an open and compatible platform system that can realize mixed management of digital, voice, video, etc. As the core part of the security system, users can build the best security around the integrated management platform and combined with project requirements System solutions. The integrated management platform requires development based on the C/S architecture, compatible with the B/S architecture, and can achieve unlimited expansion. The integrated management platform system can centrally manage video, audio and various data, and can be integrated with access control, fire protection, security, dispatch, conference, building automation and other systems. At the same time, it reserves remote consultation, surgical monitoring, medical teaching, and multimedia conferences. , Emergency command, electronic call, medical and nursing intercom and other application system interfaces to realize the connection with other systems and the related application of various data. The integrated management platform also integrates the network storage management system, streaming media forwarding system, digital matrix system and other equipment and functions into one at the same time, realizing a multi-in-one, modular management mode; and at the software and hardware levels of the management platform, Both protocols and interfaces are compatible and reserved so that different systems can be seamlessly integrated. The main functions are as follows.
· Multi-screen display function, multiple screens can be dragged and set display layout arbitrarily, which improves the use efficiency of a single client host;
· Instant playback, when an emergency occurs without prior recording, the user can immediately review the events that occurred within the previous 10 minutes; the playback recording supports the drag and drop operation of the time bar, and can perform functions such as fast playback and reverse playback operate. At the same time, the playback video can be saved as evidence;
· Multi-server login management, using the multi-server login management function, the monitoring points under multiple servers can be displayed on a browsing interface at the same time, and authorization is required to view;
· High-definition picture digital zoom, support megapixel high-definition network camera, and support digital zoom function at the same time;
· Super powerful window round tour, single-window round tour function, up to 36 monitoring points can be added to the round tour. Enable a single monitor to display up to 1296 lens images in the round robin mode;
· Image enhancement, in bad weather conditions, for poor quality images, use the mouse to select an area arbitrarily, the area can immediately display the picture enhancement processing effect, eliminate blur, improve picture clarity, and enhance picture viewing quality;
· Mouse PTZ control, the mouse can arbitrarily encircle a certain area on the screen, the pan/tilt can automatically track and turn to focus;
· Video playback based on the time bar, in the playback search application, you can drag the time axis with the mouse at will to realize the functions of forward and backward recording of different speeds, and the operation is simple and intuitive.
Program features
Realize high-quality remote video surveillance
The attenuation of the analog video signal is very serious. The transmission distance of the coaxial cable cannot exceed 500m. Otherwise, optical fiber transmission must be used. Moreover, the image quality is greatly affected by environmental interference. The network video surveillance system can provide stable and high-quality video images, not because network cameras or video encoders can achieve lossless compression or enhancement of video signals, but because the video signals encapsulated in IP packets pass through the computer network. The transmission can be achieved without attenuation, no matter how far the transmission is, and is not affected by environmental interference.
No blind spots in monitoring
The analog video surveillance system can only be transmitted through wired cables and optical fibers, and the digital DVR system usually can only achieve point-to-point transmission within the local area network. The network video surveillance system can install cameras and encoders anywhere that the network can reach through the network. The current network technology can support various transmission lines, such as Ethernet, optical fiber, wired cable, dedicated line, ADSL, ISDN, wireless local area network, GPRS/CDMA, microwave, satellite, etc.
Real-time monitoring that breaks geographical limitations
Through the network video monitoring system, remote monitoring can be implemented at any point of the network. Unlike analog systems, which are limited to specific monitors and keyboard access, network systems use “username” and “password” to control access to video information. As long as you go online, whether it is a dedicated network (such as a local area network) or the Internet (Internet), you can watch and manage the images from the camera. In addition, for convenience and improved security, images can also be stored offline.
Monitoring system is more reliable
The front end of the network video surveillance system adopts an embedded video encoder or an integrated network camera. It is a special system specially designed for surveillance. Its system core, structure, power consumption, volume, performance indicators, etc. are all designed and produced in accordance with industrial standards, with video Powerful functions such as processing, network communication, automatic control (including alarm linkage), plug and play, no need for on-site maintenance by dedicated personnel, and extremely high reliability, which is essentially different from the digital DVR system. The transmission line can easily realize the redundant network, and the intelligent management server can be redundantly backed up. Unlike the point-to-point structure of the analog video monitoring system, it can also easily realize the multi-monitoring center and distributed monitoring.
Monitoring system information is more secure
Make full use of network security technology (firewall, VPN), encryption technology, real-time clock, authority management, distributed storage, distributed monitoring and other technologies to fully protect monitoring information from unauthorized monitoring, theft, tampering, and destruction.
Long recording time, easy expansion
The network video surveillance system supports distributed network storage, and expansion is extremely simple. The capacity can be expanded at any time as needed, without a one-time investment in large-capacity storage equipment. Storage devices can be distributed anywhere on the network, and storage backup strategies can be flexibly formulated.
Send video data smoothly
One of the biggest problems with previous analog systems was the lack of an effective way to send video images. The images can only be seen on disks or printed pictures. Both of these methods require physical transmission. In the network video surveillance environment, all images are processed into data packet files, including both video images and video pictures. Data files can be easily forwarded to the required departments or personnel through the network, and can also be sent to the internal Web server within a few seconds. This kind of sending does not degrade the quality of the image at all.
Make more use of existing networks
The use of computer networks to transmit video does not require the installation of dedicated wired cables and optical fibers. In addition, power over Ethernet can be selected. This is a technology that integrates data and power based on a LAN structure, and can supply continuous and stable power to network cameras and other Ethernet devices through twisted-pair cables. Moreover, by connecting the “Ethernet power supply” with the uninterruptible power supply equipment, the network video surveillance system can continue to work even when the power is cut off-providing the best solution for the system power supply problem in critical moments.
Provide more choices of products and functions
Network video technology has the ability to provide a high level of integration and can integrate other functions and services to make the system sustainable and developable. Adopting recognized standard protocols and information networks can make the integration of a large number of products in the system easy. Switching to network technology means investing in a system that will continue to be used in the future.
The system can continue to be smoothly upgraded and expanded
The network system is both flexible and fully scalable to meet users’ changing needs and capacity expansion needs. The monitoring front end and monitoring workstation increase plug and play. Unlike most analog systems, the network video surveillance system can be expanded without the need to redo most of the work or replace different system components. It is also not like a digital DVR system that is restricted by network layer connection or management restrictions.
Reduce the overall investment cost of the system
Compared with “equivalent” analog video cameras, network cameras or network video encoders + analog cameras appear to be more expensive. However, considering the cost of dedicated lines, installation, management, and maintenance, as well as the improvement of operator efficiency and management efficiency brought about by the powerful search, positioning and video transmission of the network system, the network video surveillance system can provide a higher cost performance. In addition, if the Ethernet power supply is used, the additional cost is completely saved because there is no need to provide a local power supply for the camera. When installing or reinstalling the camera, the use of the Ethernet power supply does not require the use of a dedicated electrician.
Summarize
The transformation of the hospital’s digital high-definition security will surely bring a new round of revolution to the hospital’s security, and will also elevate the hospital’s safety management to a new level. Through new technical means, a safe hospital will be created and the development of China’s medical industry Provide a safe carrier!
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