Smoke alarm method and smoke alarm device

Abstract

The invention discloses a smoke alarm method. The method includes steps of S1, acquiring smoke signals and detecting a smoke concentration value in real time and recording the acquisition time; S2, judging whether the smoke concentration value surpasses a preset smoke concentration value or not, returning to S1 if the smoke concentration value does not surpass the preset smoke concentration value,and entering S3 if the smoke concentration value surpasses the preset smoke concentration value; S3, generating a smoke alarm triggering signal and sending an alarm signal, monitoring a time intervalvalue between current time and the smoke signal acquisition time in S1 and entering S4; S4, acquiring smoke signals again when the time interval value between current time and the latest smoke signalacquisition time reaches 5 minutes and detecting the smoke concentration value; S5, judging whether the smoke concentration value surpasses a preset smoke concentration threshold value or not, if thereturning to S1 if the smoke concentration value does not surpass the preset smoke concentration value, and sending the alarm signal and returning to S4 if the smoke concentration value surpasses thepreset smoke concentration value. According to the invention, two modes including real time monitoring and interval monitoring are employed. After an alarm mechanism is triggered, interval detectionis adopted for smoke detection on air, so that unnecessary troubles caused by repeated alarming can be avoided for users.

Description

technical field [0001] The invention relates to the technical field of smoke alarms, in particular to a smoke alarm method and a smoke alarm device. Background technique [0002] In the traditional smoke detection process, the interrupt detection method is generally used, that is, the smoke concentration in the air is monitored in real time. As long as the smoke concentration obtained is greater than the preset concentration value, it is determined that the current smoke concentration exceeds the standard, thereby triggering the early warning mechanism. During the process, the smoke remaining in the smoke detection chamber may cause inaccurate detection and alarm; it is easy to trigger incorrect alarm signals, causing people to panic. [0003] In the prior art, there is also a method of timing detection to detect the concentration of smoke in the air. Although this method can solve the above-mentioned alarm problem when the smoke dissipates to a certain extent, it is the tim...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the background technology, and provide a more flexible, accurate and timely smoke alarm method and smoke alarm device with a detection and alarm mechanism, which can not only reserve time for the smoke to dissipate, but also solve the problem of untimely alarm. problems, which can better meet the needs of actual use

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