According to the actual situation of the shop site, the solution needs to use the existing network resources, while borrowing ADSL lines and company networks for network data transmission, to achieve all the functions of the network monitoring system at all levels. The monitoring solution needs to set up a general monitoring center at the head office to make it a network monitoring station, and can freely view any screen of any store in the system.
Background and challenges
The characteristics of the chain industry reflect that the stores are scattered, and most of them are not located in one city or region. The environment is relatively complicated, but the company has a small number of supervisors and management, which brings a lot of inconvenience to the store's management. Giving full play to the function of network monitoring is an optimal auxiliary management and management solution that saves manpower and material resources. If this plan is implemented, it will play a positive role in promoting new business management and improving the overall brand image.
商超类连锁店监控系统采用全网格架构，每台监控设备均运行在项目中安防专用网络内。 Supermarket chain store: Supermarket chain store monitoring system uses a full grid architecture, and each monitoring device runs on the security network in the project. The system architecture is shown in the following figure:
The front-end camera enters the access layer switch through a super-type five network cable nearby, and the video signals of the dome camera, gun camera and dome camera are transmitted through the network cable; the control signal of the dome camera is also transmitted to the front-end camera through the network to achieve management control.
The alarm system is used to prevent intrusion alarms in important rooms (such as finance rooms, leadership offices, valuables storage rooms, etc.) and important computer rooms (such as network centers, data centers, and equipment rooms). Various important alarms are installed on the important front ends. The detection device, through the centralized management and operation control of the burglar alarm host, such as arming and disarming, will automatically send out an alarm signal after the system confirms the alarm signal, prompting the relevant management personnel to deal with the alarm information in time.
The video surveillance system combined with the alarm system constitutes a comprehensive security system. On the one hand, the system will automatically send the alarm signal to the control center, and the duty personnel can determine the alarm location through the display of the alarm keyboard and electronic map; on the other hand, it can also alert the duty personnel by means of sound and light alarms for quick processing Alarm.
The central management of our store adopts the integrated platform all-in-one, which can realize the management of the entire system, and can decode and output analog video signals to facilitate the display access. The video storage device uses a network hard disk video recorder, and each network hard disk video recorder can access up to 16 video signals. The management computer is set in the security center of our store, and the BS / CS client of the system is used to log in to the system to achieve unified management of the entire video management system.
The store chain monitoring system uses a full-grid architecture. Because the area of the store is small and the network environment is set up temporarily, each monitoring device can be connected to a small router in the store. The system architecture is shown in the following figure:
The front-end camera enters the small router in the store through a super five network cable. The video signals of the camera installed in the store are transmitted through the network cable; the control signal of the camera is also transmitted to the front-end camera through the network to achieve management control. The management in the store is shared with the cash register computer to achieve Management of in-store monitoring equipment. The storage device uses a network hard disk video recorder, and each network hard disk video recorder can access up to 8 video signals.
The video signals of the supermarket chain stores are transmitted to the central management computer room through the security private network in the project through the TCP / IP method; the video signals can be transmitted to the monitor display and the NVR storage video through the main stream of the camera.
Store chain video signals are also transmitted using TCP / IP. The entire system can be accessed through a small router located in the store, and all signaling transmissions are completed through this device.
At the back end of the system, Hikvision's network hard disk video recorder is used to store video signals. The structure of this system is relatively simple. The overall performance of the system depends largely on the NVR (network hard disk video recorder) itself.
The system design image storage time is 15 days. Finally, the selection of NVR must be based on the number of front-end cameras and the resolution to calculate the number of NVRs and the capacity and number of internal hard disks.
According to the universal storage capacity calculation formula: capacity = number of channels * number of days * 24 * 60 * 60 * code stream / 8/1024/1024, it can be roughly estimated how many hours (days) of video can be stored.
The cameras used in the front end are network cameras, and the selection of the device depends on the specific installation location and environment. The overall selection principle should be:
Supermarket chain stores
Underground parking garage: choose a barrel camera with infrared function.
Main entrance: Dome camera or gun camera with bandwidth dynamic function.
Each fire channel: Low-light gun camera is selected.
Large area: use indoor and outdoor dome camera.
Help desk: use dome camera.
Each cash register channel: gun camera.
Shelves and sales areas: gun cameras are used.
Store entrance: Use dome camera.
The center of the store: use 3 or 6 million CMOS ICR fisheye panoramic day and night network cameras.
Cashier: Use dome camera.
Construction of headquarters management platform
The headquarters management platform is the core of each chain store and an effective tool for monitoring the situation in stores distributed throughout the country. The management platform is generally built at the headquarters of brand companies. According to the different needs of each company, we propose two construction plans.
Scheme A can realize different access rights to the stores distributed throughout the country by authorizing the visitor. The system architecture diagram is as follows:
Option B can achieve different access rights to business stores distributed throughout the country by authorizing access personnel; at the same time, a marketing teaching system can be established within the headquarters. Sales directors and sales training supervisors at the headquarters can use the platform to The regional supervisors conduct practical training. The system can directly control the display wall through iPAD, which is convenient for the instructors to operate flexibly. The system architecture diagram is as follows:
The above two construction schemes can achieve remote shop inspections; intelligent retrieval, playback, and storage of remote online video materials; online display functions.
The system supports access to authorized device resources through the mobile client; it supports the viewing of authorized device status and resources in a graphical manner through the electronic map deployed in the system.
：通过店铺自建的宽带互联网，可以直接在监控中心电脑上看到各店铺的现场情景图像，也可以通过监控中心的监控电脑向前端店铺网络摄像机、快球摄像机发出控制指令，调整摄像机镜头焦距或控制云台进行局部细节观察，对店铺进行远程实时抽检监控。 Remote shop inspection : through the shop ’s self-built broadband Internet, you can directly see the scene scene images of each shop on the monitoring center computer, or you can use the monitoring computer of the monitoring center to send control instructions to the front-end store network cameras and dome cameras to adjust The focal length of the camera lens or control the PTZ to observe local details, and carry out remote real-time spot inspection and monitoring of the store. While monitoring whether the store is operating normally, it also ensures that buyers and merchants buy and sell normally and safely in the store, and provides a basis for penalties for violations of regulations.
：各店铺按照公司及经营者的要求，保存一定时间段内的本地监控录像资料，从而为公司以及店铺经营店长自身提供突发事件发生后进行事故分析的有效依据。 Local video : According to the requirements of the company and the operator, each store keeps the local monitoring video data for a certain period of time, so as to provide the company and the store manager the effective basis for accident analysis after the emergency. In addition, there is no need to add any additional equipment at the store. The owner of the store can use the local computer to view the live monitoring image on the scene.
：公司的管理人员可以随时远程访问各店铺的录像记录，并可按时间、店铺名称、摄像机编号等要素进行录像资料的快速检索和回放显示，在必要的情况下还可以将相关录像资料转存到第三方存储介质上，从而避免公司组建庞大录像存储服务器的高额投入。 Intelligent retrieval, playback, and storage of remote online recording materials : The company's management personnel can remotely access the recording records of each store at any time, and can quickly retrieve and display the recording materials according to time, store name, camera number and other elements. If necessary, relevant video materials can also be transferred to third-party storage media, thereby avoiding the company's high investment in setting up a large video storage server.
：系统支持对被授权用户开放，任何被授权的互联网络用户可登陆观看店铺现场情况，店铺业主可利用此系统充分向外界展示其经营环境。 Online display : The system supports opening to authorized users. Any authorized Internet user can log in to watch the scene of the store. Store owners can use this system to fully show their business environment to the outside world.