Why does audible and visual alarm, a residential building, always sound an alarm? Under what circumstances will you call the police!

In the acousto-optic alarm, the acousto-optic alarm will be started only when the fire alarm host is in the automatic working state and meets the conditions for starting the acousto-optic alarm (manual alarm button or smoke alarm); When you hear the sound and light alarm, look around. If there is no fire, it may be a fire test or a false alarm of the detector. Don't panic if there is no fire!

The fire alarm controller is the heart of the automatic fire alarm system. It can supply power to the detector and has the following functions? ：

1, which is used to receive fire signals and start fire alarm devices. The equipment can also be used to indicate the fire location and record relevant information. ?

2. The fire alarm signal can be started by the fire alarm sending device or the automatic fire extinguishing equipment and fire linkage control equipment can be started by the automatic fire extinguishing control device.

3. Automatically monitor the correct operation of the system and give an audible and visual alarm for specific faults.

Extended data:

Principle:

In order to reduce false alarms, facilitate installation and debugging, reduce installation and maintenance costs, and reduce the number of connecting wires, modern fire alarm controllers can know the exact location (part number) of fire detectors that send out alarms in time and accurately.

Pulse coding control system is widely used in the bus structure with few wires, which is composed of microcomputer or single chip microcomputer as the main control core unit, memory and digital interface devices. Therefore, modern alarm controller has strong anti-interference ability and flexible adaptability.

This area alarm controller constantly sends coded pulse signals to the coded detectors at each detection position. When the code of the signal is the same as that of the detector at a certain position, the detector responds and returns information to judge whether the position is normal or not.

If it is normal, the host computer (CPU) will continue to patrol the detectors in other parts; If it is abnormal, judge whether it is a fault signal or a fire alarm signal, send out corresponding acousto-optic alarm signals, and transmit the alarm signals to the centralized alarm controller.