How to link fire protection and access control How to do the fire linkage of the access control syst

Access control system. There are two ways to link with the fire protection system:

The first is to achieve soft linkage, that is, to achieve linkage through software, when the fire protection system receives the alarm signal, through the software, the command will be sent to the access control ** real-time monitoring software, so that the controller into a normally open state. However, the difficulty of this implementation is that it is necessary to integrate the fire protection software and access control software, and everyone needs to open the interface protocol of their respective systems.

The second is hard linkage, that is, linkage through hardware. The hardware interface of this fire alarm signal is connected to the door opening button of the access control, when the fire alarm is triggered all the time, it is equivalent to giving the door a signal to open the door all the time, so that the door is automatically opened, and people can easily pass through the door.

These two methods have their own advantages and disadvantages: software linkage is the easiest, can reduce redundant wiring, can be more beautiful, can be a good control of costs, but the need for a system side open interface protocol, this small access control business is impossible to achieve.

This automatic alarm system needs to connect the alarm line and the original section and set up a single-input single-output module to control the door magnetic release device, and the fire door controller needs to set up a power line to monitor the state of the fire door switch line, that is, each needs 4 wires.

What you said should be like the turnstile on the upper floor of Wal-Mart, also called a fire door, when the fire alarm gives a signal to close all the doors to separate the fire in sections and will not spread Generally, there is a central control room, the fire alarm sounds, there must be someone to call the alarm or press the alarm bell, or it is a smoke alarm to trigger the alarm, and at the same time give all the doors a 4-20mA signal to close the door, or it can be powered on to close the door (the door is set to power on automatically close) or use remote control to close the door is the same.

The fire protection system uses a single input and single output module to control the 24V relay to control the electric lock power supply of the access control or output the switching signal to the access control system to control the door lock to open. It depends on the use of access control.

1. If your access control system is uniformly powered by electricity, as long as the fire module adds a relay, the power supply of the access control system is controlled by the relay, and the access control power supply is automatically cut off when the fire alarm is encountered, and all doors are opened.

2. If the access control is not a unified power supply, it can only be set through the access control software, the fire signal is connected to the auxiliary input of the access control system, and the software can be set to open the whole department or part of the door, and this linkage setting should be transmitted through the RS485 communication line, and the access control controller should also run normally to ensure that the door of the access control system is opened normally.

Generally, it is linked by the fire alarm host and uses the fire input and output module.

Fire linkage refers to the linkage of fire protection technology system, which is composed of a series of fire protection technology systems, which can be linked with each other to realize the overall monitoring and control of fire safety technology system. The realization of linkage can adopt intelligent technology system, which can realize the linkage between various systems according to the needs of fire safety monitoring and control, and achieve the best effect of fire safety technology system.

There are two ways to link the access control system and the fire protection system:

1. Soft linkage, that is, linkage through software. When the fire protection system receives the alarm signal, through the software, the command will be sent to the access control ** real-time monitoring software, so that the controller into a normally open state, the difficulty is that the fire software and access control software need to be integrated, the interface protocol of the respective system needs to be opened.

2. Hard linkage, that is, linkage is achieved through hard eggplant delivery. The hardware interface of this fire alarm signal is connected to the door opening button of the access control, and when the fire alarm is triggered all the time, it is equivalent to giving the door a signal to open the door all the time, so that the door will open automatically, and people can easily pass through the door.

Both methods have their advantages and disadvantages:

Software linkage is the easiest, which can reduce redundant wiring, can be more beautiful, and can control costs well, but it requires an open interface protocol for the system side, and it is impossible to achieve a small access control provider;

Multiple access control panels can be connected in series for wider access coverage and greater security. This tandem connection can be achieved through a network connection, such as a LAN or the Internet. The network connection between the access control hosts can be achieved by wired or wireless means.

Fire linkage is also possible, which can be achieved by integrating the access control host with the fire protection system. When the fire protection system detects fire or smoke, the access control host can automatically unlock all access controls in the disturbance segment so that personnel can leave the building quickly and safely. This firefighting linkage requires a special integration between the access control host and the fire protection system to ensure the reliability and safety of the access control system in case of emergency.