Fire alarm

Abstract

The invention discloses a fire alarm. The fire alarm comprises an fire signal sensing device, an fire signal alarm device, and a flame retardant shell; the fire signal sensing device is composed of aflexible intelligent structure integrating driving with sensing and a Bluetooth emission module; the flexible intelligent structure is composed of a film module and a copper wire; the film module is composed of four layers of films which are a humidity-sensitive material layer, a gold electrode thin film, a piezoelectric material P(VDF-TRFE) layer and a gold electrode thin film layer from top to bottom; the film layers are mutually and tightly connected; the copper wire is adhered on the gold metal thin film by using silver colloid; the flexible intelligent structure converts temperature and humidity into electric signals to output through the copper wire; the Bluetooth emission module emits a fire signal under a power-on condition; the fire alarm device comprises a microprocessor, a powersupply, a Bluetooth receiving module, and an alarm; the Bluetooth receiving module receives the signal and transmits the signal to the microprocessor in the fire alarm device; and the microprocessoris used for processing the signal received by the Bluetooth receiving module and the power low-voltage alarm. The fire alarm disclosed by the invention is reliable in alarming and low in cost.

Description

technical field [0001] The invention relates to a fire alarm. Background technique [0002] With the increase of modern family fire and electricity consumption, the frequency of family fires is getting higher and higher. Once a family fire breaks out, unfavorable factors such as untimely fighting, lack of fire extinguishing equipment, panic and slow escape of the people present are likely to occur, which will eventually lead to heavy loss of life and property. Cities, in particular, have the characteristics of dense buildings, concentrated population, concentrated property, many sources of inflammable and explosive materials, a large number of points, and a wide area, which brings more fire and explosion hazards. In the event of fire and explosion, there will be heavy casualties and serious economic losses. Therefore, we must have the awareness of safety protection, so that people can know the fire situation as early as possible, and put out the fire in the bud. [0003] ...

AI Technical Summary

Problems solved by technology

[0003] Especially as the aging of China is getting more and more serious, when encountering dangerous situations such as fire, they will not be able to receive the alarm signal in time due to various reasons and cannot escape in time due to inconvenience, although the existing fire alarm alarm There are various types and methods, but its internal circuit is relatively sensitive and must be in contact with the air, which will cause it to burn quickly and fail to alarm when a fire occurs, resulting in it being unable to maintain sufficient alarm time, resulting in serious consequences

In addition, due to the lack of fire awareness of people and the fact that fire alarms are not cheap, the installation of alarms is not dense enough, thus missing the best time to escape; The fire alarm signal was sent out, resulting in missing the best time for rescue

Most of the existing alarms are smoke alarms, which often have various false alarms and cannot be used in many scenarios, such as kitchens or other places with smoke, steam, dust, etc.

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