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Video intercom system application status
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. 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.
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 remote control is attached to the extension, 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, and IC card access control systems at all levels. It can record the latest 32 items of information, connect property management computers, and manage 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 has been determined, the manufacturer that produces the product should be followed. Users should have a detailed understanding of the manufacturer. Does it have a technical protection production license? Has it passed the inspection of the department or the relevant national unit? Is the manufacturer's warranty system complete? After-sales service system improvement? Technical support? And successful application of demonstration projects. In particular, system engineering of networked alarm-type smart communities should be carefully selected. After the manufacturer confirms, the user should also make a horizontal comparison with the manufacturer's system, focusing on the considerations of system engineering installation, such as wiring, installation, and debugging. It is worth mentioning that whether or not user extensions are isolated should be an important factor for selection.
Video intercom system failure decryption routine <br> <br> floor platform does not work?
A: The main role of the floor platform is to standardize the wiring and wiring of the building's video intercom; isolate the entrance line of the protection system; some manufacturers' floor platforms are also equipped with system decoding (such system extensions have no decoding function and are provided by the floor platform. ); Some manufacturers of floor platforms also have video relay amplification! Therefore, our testing mainly considers whether the use of the floor platform is normal!
1. Check the wiring of each input and output port of the floor platform to see if it is correct! Is there a loose, short circuit, etc.!
2. Check the input and output ports of the floor platform to see if there is normal signal input or output! If not, please check whether the related products or accessories connected to the floor platform are working properly!
3. If the floor platform has its own decoding, if there is a problem with the decoding, first check the encoding on the decoder to see if it is the wrong address code (there are many same address codes in the system, or the wrong address code in operation. ).
4, find a decoder of the same model, the same function to replace the test, if the system is working properly after replacing the decoder, indicating that the decoder has been replaced with quality problems, please send the products with quality problems back to the production company to overhaul; The floor platform with decoding function generally uses IC chip decoding, and such chips generally have no program! Can also be used to replace the decoder chip to test (please note the direction of the chip);
Door machine, often said unit host FAQ? Hereinafter referred to as unit host!
1, digital display tube or LCD screen is not lit, the power supply of the detection unit host to see if the power supply is normal (whether it is connected to the correct voltage, whether there is a correct current input!)? Check the wiring inside the unit host to see if the port is securely connected;
1, the unit host use function is not normal! There is a problem with garbled programs that appear to be part of the microcontroller! Please contact the manufacturer of this system! Replace the MCU of the unit host under the guidance of the engineer of the production company!
2. The camera of the unit's host computer is not working properly: The video camera is usually a building. The video intercom production enterprise does not produce it by itself. If it is purchased in other places, it will cause camera problems if there is flooding, severe vibration, etc.! It may also be a quality problem with the camera! Therefore, we should use the same type of camera with the same function to test! Please send quality products back to the manufacturer for replacement or overhaul;
The use of system power is not normal!
Currently, the building's video intercom systems are generally available in 12V and 18V models. Most of them are 3A. They are generally chassis-type power supplies (transformer transformers), and some of them now use switching power supplies. No matter what kind of power supply, it can meet overload, over-current, over-voltage and short-circuit protection, and at the same time, it has a battery's charge and discharge protection function!
1. Generally, 1 unit host or 8 ordinary function video extensions are equipped with 12V (or 18V) chassis-type power supply. Exceeding this amount may result in insufficient power supply, resulting in the building's visual intercom can not work properly;
2. If the system power supply is not overloaded, over-current, over-voltage and short-circuit protection, the system power supply will be abnormal under the condition of unstable power supply! Will also affect the building visual intercom system is not working properly! Therefore, it is best to have these aspects of power protection;
3, if the system power supply does not have the charge and discharge protection function of the battery, this will reduce the service life of the battery, so the power supply is best equipped with the battery charge and discharge protection function;
4. When the power supply is not working properly, the main consideration is the stability of the input power supply and the quality of the transformer.
Building visual intercom system daily work breakdown decryption
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.