What Is a Fire Alarm Box?

Fire alarm device refers to a fire alarm system that is used to receive, display and transmit fire alarm signals, and can send out control signals and control instruction equipment with other auxiliary functions. The fire alarm controller is responsible for providing a stable working power supply for the fire detector, monitoring the working status of the detector and the system itself, receiving, converting, and processing the alarm signal output by the fire detector, performing an audible and visual alarm, indicating the specific location of the alarm and Time, while performing corresponding auxiliary control and other tasks at the same time, is a core component of the fire alarm system. Manual fire alarm buttons and fire alarm bells are fire alarm devices. In addition, there are alarm devices such as smoke and temperature.

Fire alarm

Fire alarm device means

1.

Multi-line

2.1 residual current mutual inductor

A special transformer for electrical fire monitoring systems that outputs the leakage current signal of the power line at a specific rate by detecting the residual current of the monitoring circuit.

2.2 Electrical fire detector (hereinafter referred to as the detector) explorer for electric fire

On-site detection devices for electrical abnormal signal detection, consisting of signal sensors such as leakage and temperature, alone or in combination.

2.3 electrical fire monitor (hereinafter referred to as monitor) monitor for electric fire

With on-site operation, display and alarm functions, can form one or more electrical fire monitoring nodes with the detector

Field monitoring device that can communicate with the central monitoring host in real time.

2.4 detectors for electric fire

(Hereinafter referred to as the monitoring detector)

Field devices that have both monitoring and detection functions, integrate signal detection, operation display and sound and light alarms, and can communicate with the central monitoring host in real time.

2.5 monitoring device of the scene

Residual current transformer, detector, monitor and monitoring detector collectively.

2.6 Alarm and monitoring

Audible and visual alarms issued when electrical fire detection parameters such as leakage of monitored power lines reach the set value of action. 2.7 Pre-alarm

The audible and visual alarm issued when a certain parameter of the monitored power line reaches 50% of the monitoring alarm set value is a slower alarm sound different from the monitoring alarm. The purpose is to remind the staff on duty to troubleshoot early.

2.8 fault alarm

Slower audible and visual alarms issued when a certain period of system failure (such as an open bus) is detected during the electrical fire monitoring system itself inspection at a certain period of time.

2.9 monitor node monitorpoint

For the electrical fire real-time monitoring system, it is a point on the system transmission bus. The sum of the nodes determines the monitoring scale of the system. In the physical sense, a monitoring node is composed of a monitor and a detector, which can realize the electrical fire monitoring alarm and information uploading functions of a power distribution circuit and switchgear.

2.10 single circuit monitor

An electrical fire monitor, which forms an electrical fire monitoring node with a detector, is used to alarm the electrical fire of a power distribution circuit (that is, a single circuit).

2.11 multiple circuit monitor

An electrical fire monitor consisting of a single monitor and multiple detectors in the electrical distribution box and multiple electrical fire monitoring nodes is used for electrical fire monitoring and alarming of multiple distribution circuits (ie, multiple circuits).

2.12 Central monitoring host (hereinafter referred to as the host) main unit for centralized control

A high-level supervisory management machine that can receive alarm signals from electrical fire monitors or monitoring detectors, issue sound and light alarms, indicate alarm locations, and record and save alarm information.

2.13 Electric fire monitoring system (hereinafter referred to as monitoring system) Alarm and control system for electric fire prevention

A digital real-time monitoring system composed of a host computer, a system bus, and field devices for detecting abnormal electrical parameters associated with electrical fires in power distribution lines, and having functions such as display, alarm, operation, and recording.

2.14 system bus (hereinafter referred to as the bus) system communication bus

The physical medium used to connect the host computer and the on-site monitoring device in the electrical fire monitoring system to carry out information communication transmission in a prescribed standard format.