Early fire warning system for detecting airborne particle value

Abstract

The invention discloses an early fire warning system for detecting an airborne particle value. The system is mainly composed of a sensing module, a micro-control module and display equipment. The system is quite simple in the overall structure. The sensing modules detects rising curvature of an airborne particle concentration value for comparison and sends a warning message when airborne particles are abnormal to prompt users in an environmental area so as to enable the users in the environmental area to quickly find a fire position, which can quickly complete disaster prevention functions such as initial fire fighting. In addition, the early fire warning system of the invention digitally adjusts the setting of a critical value by a cloud processing unit instead of manual adjustment to enable the users to make appropriate adjustment according to requirements of different environment, which effectively reduces the labor cost, improves the operation efficiency, reduces the number of fires and protect the safety of life and property.

Description

technical field [0001] The invention relates to a fire sensing system, in particular to an early fire warning system for detecting the value of suspended particles in the air. Background technique [0002] According to fire investigation reports, the vast majority of residential fire deaths are due to smoke inhalation, rather than being burned by open flames. And about two-thirds of fire deaths occur at night when people are sleeping. Due to the complexity and large-scale of modern buildings, in the face of fire, if the correct alarm can be issued in the shortest time, and the fire fighting and evacuation actions can be carried out, the disaster situation can be reduced. The development of a fire is divided into four different stages: simmering (before burning), visible smoke, flame generation, and high heat stage. The time when the fire turns from smoldering with ignition source to flaming and burning with high heat is very critical. During this period of time, there are ...

AI Technical Summary

Problems solved by technology

[0014] Among them, the smoke sensor, such as photoelectric type, or air sampling, etc., uses the physical characteristics derived from the increase of smoke particles as the basis for fire judgment. After the photoelectric type uses the emitted light source, if there are smoke particles in the air, it will be Scattering light causes changes in light, and detects the occurrence of fire based on this. However, if the sensor is set up in this way, as long as the light source is covered or there is no light source, it may cause misjudgment. False alarms, which in turn sound the alarm

In addition, there is smoke but the smoke is not thick enough, so that the light sensing is not completely shielded, and the alarm cannot be issued, and due to the limitation of light source emission, its detection range is bound to be limited, and the sensing effect for large-scale spaces is also quite Therefore, if the above-mentioned smoke sensor is used for a long time, there will be false alarms, and it lacks the accuracy and stability of smoke detection; The air in the space is sampled, and the obtained air composition is analyzed to determine the occurrence of a fire. The sensors used in this type of air sampling are relatively expensive, and in order to sample the air, they must be connected through pipes to facilitate sensing (such as VESDA system )

[0015] At present, the setting of the fire critical point of the fire sensor 1 is manually adjusted. The factory test personnel can adjust the critical point of the sensor to the warning point that meets the fire detection standards of various countries through the external adjustment button of the sensor. The external adjustment knob is to change the variable resistance inside the sensor through the external rotation knob. However, the current method of manually adjusting the warning point has some defects, such as the different reactions or emotional fluctuations of the testers, which makes each manufactured sensor warning point different. same

[0016] In addition, above-mentioned this fire sensor 1 is in the design, its function is fixed and cannot change, for example input key (button) quantity, quantity and display mode of light-emitting diode, beep mode of buzzer piece, firmware program setting and sensitivity adjustment cannot be changed or modified by wireless transmission

Therefore, if the user wants to increase or change the display mode of the original alarm, he must send someone to re-burn the program on the spot or manually adjust the sensor itself (such as a dip switch), so the fire sensor 1 must be put into more tasks and increase the cost.

In addition, as a result of the customization of the fire sensor 1 in the prior art, once the smoke exceeds the normal standard due to construction or misjudgment, a warning sound will be issued

In some public areas, sprinklers are even installed. When the fire sensor 1 is accidentally touched, the interior decoration will be damaged, which will cause future liability and compensation issues

[0017] Based on the above-mentioned traditional smoke detectors: (1) no early fire warning function, (2) sensitivity cannot be adjusted and the system does not have multi-stage setting notification, and the very early fire warning system (VESDA) has: (1) lack of technical design Constructors, (2) Disadvantages such as high system setup cost, etc., the invention is the first to propose an "early fire early warning system for detecting the value of airborne particulates", which has: initial fire smoke monitoring, sensitivity can be adjusted systematically, multi-stage notification, It has the advantages of fire positioning, intelligent disaster prevention function, simple construction and low equipment cost. The design principle is as follows

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