Fire alarm system

Abstract

The invention belongs to the technical field of fire alarm, and discloses a fire alarm system which comprises a fixed disc, mounting grooves are formed in the outer side face of the fixed disc at equal angles, smoke detectors are movably mounted in the mounting grooves, a power connection box is arranged in the middle of the fixed disc, and connecting wires are fixedly mounted at the bottom ends of the smoke detectors. Detection is carried out normally, and when a smoke detector detects a smoke signal, a chemical agent in an agent box is started rapidly through an electric signal to generate a chemical reaction, so that power is provided to drive a protection assembly to move to the outer side face of a fixed disc; the smoke detector is protected by the fireproof and heat-insulating material, so that the phenomenon that the smoke detector of a traditional fire alarm system is damaged due to temperature rise of a fire scene and smoking of smoke is avoided, the property loss when a fire occurs is reduced, a quick response can be made to the fire, and the fire alarm system is low in cost and suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of gas fire alarm, in particular to a fire alarm system. Background technique [0002] The automatic fire alarm system is composed of a trigger device, a fire alarm device, a linkage output device and devices with other auxiliary functions. The electrical signal is transmitted to the fire alarm controller, and at the same time, the entire floor is notified in the form of sound or light to evacuate. The controller records the location and time of the fire, so that people can detect the fire in time, and take effective measures in time to extinguish the initial fire. , to minimize the loss of life and property caused by fire, is a powerful tool for people to fight against fire. With the improvement of people's awareness of fire safety in modern society, more and more buildings have begun to install fire alarm systems. In order to realize the fire alarm in the early stage of the fire, and then reduce the loss,...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the common fire alarm systems are installed indoors and used. They are generally composed of sensors and alarms. Since the temperature will not rise sharply in the initial stage of a fire, large smoke and a certain amount of fire will appear first. Therefore, the sensors currently used are mainly used to detect smoke and fire, but because the light intensity emitted by the fire is easily disturbed by ambient light and artificial light, the fire alarm system that uses light sensors for alarm is often caused by interference from the external environment. The phenomenon of false alarms, so most of the sensors currently used are mainly smoke sensors. The main body of the smoke detector is generally made of plastic. When the smoke detector detects a large smoke, the signal is transmitted to the alarm device to realize the fire alarm. In order for smoke detectors to detect smoke quickly, smoke detectors are generally installed on the top of buildings, but as a fire occurs, the ambient temperature will increase significantly. At this time, the casing of smoke detectors made of plastic It will not be able to withstand higher temperature and smoked smoke, which will easily lead to damage or blackening of the shell and damage to the smoke detector itself. For small fires, the damage caused by the fire to the smoke detector will bring A certain loss, so how to quickly detect the smoke signal and protect the detector in a fire is very important

[0004] Secondly, when the fire alarm system is working, there are generally sensors that detect smoke or light signals to judge the occurrence of a fire, and then convert the signal into an electrical signal and send it to the alarm. When the alarm receives the electrical signal, it will turn on the alarm device. However, it is foreseeable that the sensor and the alarm are always in the standby state, and they are in the working state when encountering a fire. They will continue to consume power during the standby and working process, but due to the circuit during the fire may be will be cut off, so in the prior art, a backup power supply is generally installed to supply power to the fire alarm system, but in the actual operation process, some staff members will think that the fire alarm system is in a state of constant power consumption and will turn off the power supply of the fire alarm system. When a fire actually breaks out, the fire alarm system often fails to work normally due to the large power consumption and insufficient backup power supply, which leads to the failure of the fire alarm system to function as an alarm when a fire actually breaks out, resulting in greater losses

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