Deep analysis of access control intercom

Access control intercom

With the advancement of technology, walkie-talkies are more and more widely used in the security industry, and the door-to-door intercom system is produced in this way. The access control intercom is to apply the walkie-talkie to the access control system. The user conducts a call or video communication through the walkie-talkie. The access control intercom system is mainly composed of an intercom host, an intercom extension, a UPS power supply, an electric lock and a door closer. According to the type, it can be divided into direct type, digital type, digital type household pass, direct press type video intercom, digital video intercom, digital household video intercom, etc.

Intercom host

The intercom host is the core part of the building intercom system. The transmission signal of each extension and the electric lock control signal are controlled by the host computer. Its circuit board is installed with vibration reduction, moisture-proof treatment, anti-vibration and moisture-proof capability. Extremely strong, with night lighting, beautiful and generous.

Intercom extension

The intercom extension is a walkie-talkie, which is usually intercommunicated with the host. The household intercom system is integrated with the host to form an internal telephone system to complete the telephone contact of the users in the system. It is more convenient to use. Visual extension, non-visual extension. It has electric lock control function and monitoring function, which is usually installed at the door of the user's home, which is convenient for the residents to talk with the visitors.

UPS power supply

Its function is mainly to keep the building intercom system from power failure. Under normal conditions, it is in a state of charging. When the power is off, the UPS power supply is in the state of supplying power to the system. Building intercom system, manufacturers generally do not use UPS batteries, mainly because the visual system consumes too much power, the general small capacity UPS battery can not guarantee the use time!

Electric lock

Its internal structure is mainly composed of electromagnetic mechanisms. The user can press the electric lock button on the extension to energize the electromagnetic coil, so that the electromagnetic mechanism can drive the connecting rod to control the opening of the gate. Door closer It is a special automatic closed door linkage. It has a regulator that adjusts the acceleration and force, making it easy to use and flexible.

working principle

The visitor can conveniently call and talk to the household through the host in front of the downstairs unit. The household is open and closed at the indoor control unit door. The host of the community can receive the resident alarm signal at any time and send it to the duty host to notify the community security personnel. It not only enhances the safety and security of high-rise residential buildings, but also greatly facilitates the residents and reduces the unnecessary troubles of going up and down the building.

Way of working

The door is always locked, so that non-residents can enter the building without permission. The residents in this building can use the key to enter and exit the building freely. When a guest visits, guests need to click on the room number of the intercom host on the intercom keyboard outside the building to call the intercom extension to visit the resident. The owner of the interviewed household makes a two-way or visual call with the visitor through the intercom device, and confirms the identity of the visitor through the voice or image of the visitor. After confirming that the visitor can be allowed to enter, the owner of the household uses the unlock button on the intercom extension to control the electronically controlled door lock on the entrance door of the building to open, so that the visitor can enter the building. After the visitor enters the building, the door is automatically locked.

The security department of the residential property management can monitor the working conditions of the security intercom system of each residential building in the community through the community security intercom management host. If the entrance door of the residential building is illegally opened, the security intercom host or the line fails, the cell security intercom management host will send out an alarm signal and display the content and location of the alarm. The community property management department and the household or household and household can use the system to talk to each other. If the property department informs the tenants to pay various fees, the tenants inform the property management department to repair the residential facilities, and the residents call the community management personnel or the neighborhood for help in an emergency.