See Community Intelligence: Experience Visual Intercom Technology Application

The video intercom system is a modern, well-off residential service measure that provides two-way video calls between visitors and residents. It achieves dual image and voice recognition to increase safety and reliability, saves a lot of time, and improves work efficiency. What's more important is that once the door magnets, infrared alarm detectors, smoke detectors, gas alarms and other equipment installed in the home are connected to the security indoor unit of the video intercom system, the video intercom system It is upgraded to a security technology prevention network. It can be wired or wirelessly communicated with residential property management centers or community guards to provide security protection against theft, disasters, and gas leaks, and provide maximum security for owners' lives and property. Protection. At the same time, it can also improve the overall management and service level of residential buildings and create a safe community living environment. Therefore, it gradually becomes an indispensable auxiliary equipment for well-off housing.

Video intercom development trend

The video intercom has gone through the process of analog black-and-white, color, and digitization. It has developed in the direction of networking and intelligence, and has gradually incorporated a variety of media functions. Analog video intercom (black and white, color), audio and video transmission through the coaxial cable, control signal transmission through the microcontroller bus, its technical characteristics determine the product has inherent defects, and digital network transmission brings more than just through the sound Video and all control information are transmitted over a single network cable, overcoming the drawbacks of analog transmission, and more importantly, adding more practical value-added services to users.

In the future, the development of digital video intercom will be more integrated with smart home control, and it will gradually become the control center of smart home, and more and more additional functions will be added to it.

Video intercom application

The building visual intercom system generally includes a video intercom type and a network alarm intelligent type, which can meet the different needs of different occasions such as single-family homes, villas, ordinary houses, high-rise buildings and socialized residential quarters.

Single building intercom system

The system is suitable for high-rise, multi-story buildings requiring only intercom and electronically controlled unlocking without networking. It consists of a host computer at the door, a user extension, an uninterrupted power supply, and an electronically controlled lock. Using the bus structure, the main line is a three-core line, which is transferred to the user via a layer distributor to a two-core non-polarity line connection. The bus-to-user extension adopts a layer distributor to protect the bus, so that any extension fault or short circuit in the extension does not affect the normal operation of the system, which greatly improves the reliability and stability of the system. The user extensions must be coded, the extensions must be universally interchanged for convenient after-sales service, and the system has direct call and digital options.

Network alarm intelligent system

The networked alarm intelligence system consists of a management center, a community entrance host, an elevator portal host, a user extension, an inter-tier distributor, and a user extension with various types of alarms. This system adopts the bus structure, the main line is a four-core line, and a video line is added. The ladder-level host is connected to the user's extension via the inter-layer distributor to a four-core line plus a video line.

In this building networking system, multiple community entrance hosts can be set up, and a four-core line (an additional video line of the visual system) can be connected to the elevators of each tower using a bus-type ring structure.

The system has various functions such as video intercom, image monitoring, emergency alarm, automatic alarm, security patrolling, and IC card access control according to the configuration. The computer can intelligently manage the community through computers. Each building is equipped with an elevating unit (with multiple entrances and exits, multiple sub-elevators can be expanded). The elevating host is equipped with four large-sized LED displays, which usually display the building's number and unit number. When the imitation guest calls the resident, the room number of the occupant is displayed. Each visit to the resident management center has a record.

The visual host uses a low-light high-definition camera and infrared compensation at night so that residents can clearly see the visitors' images at night.

Each host in the community can also play patrol and punch. Each host can also choose contact type IC card or contactless IC card, the household can use the IC card to open the electronic control door lock, with the contactless IC card function ladder host, usually the unit can store thousands of storage The IC card usage information is read by the management center "One Card" management module when necessary.

The user extensions can be connected with infrared anti-theft detectors, door magnetic switches, smoke detectors, fire detectors, emergency buttons, doorbells. There are three ways of disassembling and arming the user's extension burglar alarm: the extension is equipped with a remote controller, and the IC card and password that the escalator host is equipped with. The remote control can also be used as an emergency button for emergency assistance. The user can get timely help anywhere in the room. Emergency call will not interrupt the original call in the system.

The management center can accept information such as handling household alarms and management calls, security patrolling, abnormality of unit electric control doors, open alarms, IC card access control systems at all levels, can record the latest 32 items of information, connect property management computers, and pass property management software. Record all kinds of information in real time, search and print. At the same time, in the visual system, the management center can be programmed to perform round-trip monitoring of the ladders of the community when it is closed. In principle, it has covered some functions of the district monitoring system.

In short, when selecting a building video intercom system, users should first determine their functional requirements and then select a specific system. After the required system is determined, the manufacturer that produces the product should be followed. Users should respond to the manufacturer's detailed understanding of whether there is a technical protection production license, whether it has passed the inspection of the public security department or the relevant national unit, whether the manufacturer's quality assurance system is complete, whether the after-sales service system is perfect, technical support, and successful application. The demonstration project and so on. In particular, system engineering of networked alarm-type smart communities should be carefully selected. After the manufacturer confirms, the user should also carry on the horizontal comparison to the manufacturer's system, and focus on the system engineering installation considerations, such as wiring, installation, debugging and so on. It is worth mentioning that whether or not user extensions are isolated should be an important factor for selection.

Video intercom application case

This project is a modern high-rise apartment building with a total of 28 floors, including 2 floors underground and 26 floors above ground. The 1st to 3rd floors are mixed for commercial and residential use, and 4 to 26 are completely residential and total 126 houses.

1. Equipment selection According to Party A's requirements, combined with the specific conditions of the project, choose a video intercom system.

This video intercom system has many features:

·Design planning

a. System platform architecture is complete, scalable to meet the needs of any building and community system integration;

b. Digital modular design, simple and clear, easy to plan and expand.

·Construction and installation

a. From the beginning to the end of the four cores plus a video cable, easy to thread;

b. From the indoor unit, the door machine to all peripheral devices are provided with the terminal backplane;

c. The indoor unit's internal code is set digitally, which is easy to be error-prone;

d. System testing is convenient, debugging is convenient, and daily maintenance is convenient.

·Users

a. Humanized smart design, adults and children can easily use correctly;

b. Community function is easy to operate, and management is convenient and safe;

c. The digital system architecture makes it easy to expand and adjust in the future without affecting the original usage habits.

2. System composition

The function of the indoor walkie-talkie is: Through the indoor walkie-talkie, the homeowner can see the visitor or the guard's image and realize the two-way intercom. The door machine selected in this system has the following features:

a. can automatically correspond to 20 doorway machines, or 20 access control;

b. can automatically correspond to 10 guards, or 10 layers of security control;

c. Two-way master/passive and any door machine or security device connection can be video intercom;

d. Each household can install visual small gates and can control each home;

e. Each household can install indoor extensions and can intercom. The indoor intercom can be divided into security type and non-security type. The security type indoor unit can connect various alarm detection devices and alarm devices, such as infrared alarm detectors and gas. Leak alarm, magnetic switch, emergency button, warning light, sirens, etc., to form a complete smart home alarm network, and can be connected with the management center or the guard room through the video intercom network to maintain close contact at any time. This gives the head of the household the greatest sense of security.

·The door machine

The function of the door machine is to record the visitor's image and distribute it to the household or the guard side through the signal line. The door machine featured in this system is:

a. Suitable for installation in multi-community entrance/building entrance/guard or community area for residents, guards or visitors.

b. The door-to-door machine adopts a 1 to 7-digit number code for the indoor unit of the resident, which can be coded according to the gate number, floor type, and room type of the area. Direct calls and convenient operation do not require comparison.

c. The door machine can be set paging range to facilitate multiple security control in the area;

d. Visitors can call the guards at any door on the machine;

e. The digital system is easy to expand and facilitates community planning.

Relay box

The function of the relay box is to amplify the sound and image distribution recorded by the door machine and transmit it to each household or guardhouse. The relay box used in this system is characterized by:

a. Each relay box can be assigned to connect 4 visual indoor walkie-talkies;

b. Relay box provides all terminals and image processing distribution amplification functions;

c. relay box to provide backup battery charging circuit and automatic switching function;

d. Using a switched power supply output stability and automatic overload protection.

3. Equipment distribution and quantity

A total of 2 door machines and 127 indoor units were installed in the project.

a. Security Room: Set up a video intercom door machine, an indoor unit, an alarm processing panel, and an alarm printer. In peacetime, the guards can easily talk to visitors and residents at any time. When a resident is not at home, if there is a police situation, the alarm detector will alarm, the alarm panel will alarm, and the alarm printer will automatically print. The guards will promptly handle the situation according to the situation. In order to achieve all-weather monitoring of apartment security purposes.

b. Gates: Electrical control doors are designed at the entrance to the first floor of the apartment. Electromagnetic door locks, automatic door closers and video intercom door machines are located on the electrical control doors. There are push-buttons on the door machine to enable visitors to the head of the house to call or visit visitors. Talk to guards and guards.

c. Homes: There are 1 social security full-type indoor units in each household, totaling 126 units. There is also one infrared alarm detector, one gas leak alarm and two door magnetic switches. The indoor unit has a monitor screen and a telephone. The user can clearly see the visitor through the monitor screen and can realize two-way intercom via the telephone. After confirming the identity of the visitor, the user can open the apartment electronic door to access the guest through the door open button on the indoor unit; the owner of the indoor unit can also contact the guard at any time. When the situation occurs, the alarm information through the line can be transmitted to the guardhouse in time so that the guards can make timely treatment and the loss can be minimized.