Building security industry vigorous development of indoor extension to (a)

Back in twentieth Century eighty at the end of the 1960s, when the domestic economic level in the early stage of development, coupled with the people's security consciousness is not strong, intercom failed to look into the
Thousands of families, the development level only in the non visual intercom stage. Ten years grinding sword, to 90 time end, black and white non visual intercom is the
The user's favor, has become the canonical intercom family.
With the increasing development of economic and people's living level, people have higher pursuit of quality of life, which makes the color video phone
Goods welcome development "spring". From the simulated intercom now come full digital intercom, step by step, is a full range of innovative technology to the product, and
A industry is vigorous development performance. Now, building intercom goes towards integration, intelligence, information, target began
Qualitative change.
Building interphone extension product structure
Indoor extension is an important part of building intercom system. From the functional point of view, building intercom indoor extension are non visual extension and visual extension two
Categories of products. Basic functions for intercom (VDP), lock. With the continuous advancement of technology, many products have monitoring, alarm and
Set removal, household, receiving information, remote alarm, a message extraction, home appliance control functions.
The internal structure of indoor machine can be divided into: the internal circuit board, display and module and power supply. The circuit board is mainly composed of control power
Path component and embedded micro controller two modular structure. The control circuit module is mainly the implementation of the command, such as the power module power supply, sound
Frequency power amplifier circuit using the transmission of audio, keyboard module receives visitors input instruction; embedded micro controller traditional and said control unit, which is responsible for the control of
To coordinate the work of circuit component. Can say, the main technology building talkback indoor extension is embedded micro controller and the control circuit component
Technological innovation. In addition, the core technology of indoor extension also includes audio and video decoding and processing and network transmission in three aspects. Visual intercom
Display LCD color and black and white CRT two categories, there are 3.5 inch, 4 inch, 5.6 inch, 7 inch, 9 inch, 10.2 inch specifications. At present
The mainstream market size is 7 inches. LCD color indoor extension is currently no localization, high cost, which is constraining the color video building intercom system
The bottleneck in the application.
From the perspective of product technology, the current domestic market mainstream indoor extension products are divided into two kinds, one is the simulation of indoor analog transmission technology division
Machine, another is a digital talkback indoor extension using video decoding technology and network transmission of digital audio. Simulation system of indoor extension function of relatively simple
In addition, simple, visual intercom call, the lock function, usually also integrates professional alarm, information view, elevator calling function. Digitization
Talkback indoor extension functions more powerful, can achieve a video call, home appliance control, multimedia control Home Furnishing intelligent functions. At present, the domestic
Digital phone market share in the 10% ~ 20%, the rest of the market is still holding hands in analog interphone.
Building indoor extension intercom system function application
Function: intercom function is the base function of indoor extension, but also the building intercom system and the basic reason for the existence of birth. Early African Union
Network building intercom system with only the elevator intercom and lock, with the development of network technology and management mechanism of the indoor machine, at present already
Derived more function rich, for example, can be directly intercom and residential property center, facilitate owners in a timely manner to the property reflects the situation, ask for help
Help; on the other hand, by monitoring the stairs of the exchange of personnel, the user can take the initiative to see the ladder of the mouth, and choose to call or unlocking, or
Even missed the show time, also can see surveillance video to prevent potential safety hazard.
In addition, from the functional point of view, building intercom indoor extension are non visual extension and visual extension of two categories of products, though seemingly only indoor
A small extension innovation, it means a big step to change people Home Furnishing lifestyle, on the other hand, with the maturity of the digital network era
Of intercom system has become represent the general trend, and digital intercom can also realize the intercommunication between households, residents can call each other, the
Cell fusion into a harmonious big family, between the person and person returned to another form of communication.
Alarm function: Despite the security alarm is the derivative function of building intercom system, but now the majority of manufacturers has as a standard work indoors extension
Can one, even has become the intercom system rigid standards in Jiangsu and Zhejiang area security alarm. At present, the function in the technical implementation and the basic function
Already very mature, some manufacturers will provide the remote security control, alarm and appliance control linkage more application intelligence.
While the security alarm function can well solve the problem of incompatibility system partition, system will meet Home Furnishing intelligent process, can also from another side
Develop the technology and market building intercom, realize the cooperation and joint building intercom and related systems, to provide support and assistance of powerful intelligent Era
.