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Smoke alarm and correction method thereof

A smoke alarm and smoke alarm technology, which is applied in the direction of fire alarms that rely on the effect of smoke/gas, can solve the problem that the smoke alarm cannot be adjusted adaptively, so as to solve the limited use environment, improve the detection sensitivity and reliability. sexual effect

Active Publication Date: 2020-09-29
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a smoke alarm and its correction method to solve the problem that the smoke alarm in the prior art cannot be adaptively adjusted under different external conditions

Method used

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  • Smoke alarm and correction method thereof
  • Smoke alarm and correction method thereof
  • Smoke alarm and correction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 is a flow chart of a method for correcting a smoke alarm according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0028] Step S101, after the self-learning mode is turned on, within the time period set by the self-learning mode, the air velocity and smoke concentration are obtained;

[0029] Step S102, determining the smoke alarm threshold according to the air velocity and the smoke concentration;

[0030] Step S103, replacing the initial alarm threshold of the smoke alarm with the smoke alarm threshold, so as to be used for the smoke alarm in the normal working mode.

[0031] In this embodiment, the influence of air flow on smoke concentration detection is reduced by actively collecting and analyzing the air. The smoke alarm threshold in different environments is automatically adjusted through the self-learning function, which improves the detection sensitivity and reliability, and solves the...

Embodiment 2

[0038] figure 2 is a structural schematic diagram of a smoke alarm according to an embodiment of the present invention, such as figure 2 As shown, the smoke alarm includes:

[0039] The air sampling module is used to collect the air in the workplace where the smoke alarm is located; specifically, the above air sampling module includes: a connected suction pump and a sampling pipeline, used to collect air in the workplace where the smoke alarm is located; Among them, the sampling pipeline is set in sections to locate the abnormal area when the smoke alarm alarms; the filter is used to filter the particulate matter in the air, and the filtered air is input into the smoke detection chamber, and the smoke detection chamber is used to analyze the air in the air. smoke concentration.

[0040] The airflow sensor is connected with the main control chip and is used to detect the airflow velocity.

[0041] The smoke sensor is connected with the main control chip to detect the smoke...

Embodiment 3

[0047] image 3 It is a flow chart of threshold setting of a smoke alarm according to an embodiment of the present invention, such as image 3 As shown, the process includes:

[0048] 1) Collect air velocity and smoke concentration in the air.

[0049] 2) Determine the initial alarm threshold according to the air velocity and smoke concentration.

[0050] Specifically, according to the smoke concentration and air flow rate, an initial alarm threshold is calculated according to the empirical threshold calculation method. Before the self-learning is completed, the threshold is temporarily used as the basis for the system's alarm.

[0051] 3) Set the self-learning mode and duration, and enable the self-learning function.

[0052] Specifically, the self-learning duration of the alarm can be set according to the installation site of the alarm, and the self-learning duration can be extended as much as possible according to the conditions, so that an alarm threshold closer to the ...

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Abstract

The invention discloses a smoke alarm and a correction method thereof. The method comprises the steps that after a self-learning mode is started, the air flow speed and the smoke concentration are obtained within the set duration of the self-learning mode; a smoke alarm threshold value is determined according to the air flow rate and the smoke concentration; and an initial alarm threshold value ofa smoke alarm is replaced with the smoke alarm threshold value so as to be used for smoke alarm in a normal working mode. By actively collecting and analyzing air, the influence of airflow on smoke concentration detection is reduced. Smoke alarm thresholds in different environments are automatically adjusted through a self-learning function, the detection sensitivity and reliability are improved,and the defect that the use environment of the smoke alarm is limited is overcome.

Description

technical field [0001] The invention relates to the technical field of smoke alarms, in particular to a smoke alarm and a correction method thereof. Background technique [0002] Smoke alarm is an alarm device that realizes fire prevention by monitoring smoke concentration. Traditional smoke alarms can only be detected by waiting for the smoke to drift into the detection range of the detector. For special places such as large space spans and high heights, the airflow is easy to stratify and spread laterally, and the smoke is usually diluted by the airflow. The smoke alarm didn't work. [0003] In addition, traditional smoke alarms have already set the threshold in advance. For different use environments, the normal standard of smoke concentration and the alarm threshold should be different. Using this type of smoke alarm will cause false alarms or delayed alarms. , so its use environment is greatly restricted. [0004] Aiming at the problem in the prior art that the smoke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/10
CPCG08B17/10
Inventor 牟桂贤申伟刚王亦心刘文达裘文波
Owner GREE ELECTRIC APPLIANCES INC
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