Infrared band-pass filters are designed to detect and measure gases in the atmosphere. Many gases show specific absorption lines in the mid-to far-infrared range. The gas concentration can be measured using a filter that allows monitoring of the uptake of this particular gas.
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Visual indoor extension is one of the important manifestations of intelligent community, and its function is expressed as the degree of intelligence. In addition to video intercom and unlocking, the visual indoor extension also has the following features:
1) Touch operation: There are two main reasons for adopting the touch operation mode: A Considering the appearance is beautiful, the operation keys are limited by the structure; B, at the prompt of all Chinese, “Intelligent products, fool-type operation†become possible.
2) Wireless remote control: Remote control is divided into two types, one is RF remote control, the other is infrared remote control, both have their own advantages. RF remote control, using civil frequency band (315M, 433M) electromagnetic wave transmission, transmission distance, strong penetration, the receiver program generally uses superheterodyne or super-regeneration, superheterodyne receiver sensitivity (-110db), stable performance, use long life. Infrared remote control, directional, can not penetrate the object, the transmission distance is within 5m, the erroneous BER error rate is low. The extension is equipped with a remote control receiving device to facilitate the removal/arming operation, and some of them are also used for emergency alarms, alarm cancellations, and the like.
3) Disarming the smart card: According to the conventional method, when the disarming is required, the disarming password needs to be input, which is troublesome. The owner can disarm only by swiping a specific smart card. Disarming with a smart card is beneficial to "one card."
4) Receiving SMS: There are two kinds of schemes for the extension to receive SMS: First, video SMS, that is, when the householder reads the SMS, the center computer outputs the content of the SMS as a video signal. The weak point of the scheme is to occupy the intercom channel, and the confidentiality is poor; This is a kind of digital short message, that is, the central computer transmits the content of the short message to the extension via data communication. Its advantages are fast speed, good confidentiality, and it does not occupy the intercom channel.
5) Request for SMS: Residents can check the information related to the opening of the center, such as utility bills, monthly payments, and public advertisement notices.
6) Sending SMS: Residents can also compile their own requests into SMS messages and send them to the management office for archiving and timely processing.
7) Image storage: When a visitor calls and the owner is not at home, the extension can automatically shoot the visitor's image and wait until the owner returns home to view it.
8) Message: When the owner is not at home, the visitor can leave a message to the extension.
9) Elevator linkage: The ladder controls the visitor to use the elevator to enter the designated floor function to further protect the community safety; the elevator reservation provides facilities for the owner and the visitor.
10) Fire alarm linkage: When a fire accident occurs, the floor monitoring will automatically open the access control and alarm at the same time, facilitating the evacuation of the crowd and protecting the safety of the residents.
The visual indoor extension has become a boutique in the new building intercom with outstanding performance. The pursuit of perfect performance, the smart home function into the building intercom, sound quality using high-quality audio amplifier, transparent sound quality will be life vivid interpretation. Products using high-quality audio amplifier, ABS shell, 7-inch TFT LCD screen, circular design, the use of modern digital photo frame, leading smart home new fashion. Visual indoor extension as one of the basic equipment for community life is closely related to the life of the owner. Its follow-up direction is mainly based on three points: intelligentization, integration, and humanization. Intelligentization is an inevitable trend for the development of the entire indoor extension. It requires a thorough transformation and innovation in the technology of traditional building intercom companies; integration is the best way to integrate intelligent indoor extensions and smart home systems; and humanization is the soul of the design of indoor extensions. Whether it is the development of new functions or product design innovations, it should be in line with people's portable needs and aesthetic needs.
Visual indoor extension main features introduced
The visual indoor extension 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 security and reliability, saves a lot of time, and improves work efficiency. What's more important is that once the door-mounted magnets, infrared alarm detectors, smoke detectors, gas alarms and other devices installed in the house are connected to the indoor system host 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, providing maximum security for the lives of property owners. Degree of protection. It can 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.