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A smoke alarm and smoke technology, which is applied in the direction of fire alarms that rely on the effect of smoke/gas, can solve problems such as untimely alarms, achieve accurate detection and alarm mechanisms, meet actual use needs, and have flexible detection and alarm mechanisms. Effect
Inactive Publication Date: 2018-03-06
SICHUAN CHANGHONG ELECTRIC CO LTD
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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
Method used
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Embodiment 1
[0029] like figure 1 Shown, a kind of smoke alarm method is characterized in that, comprises the following steps:
[0030] S1. Obtain the smoke signal in real time, and detect the smoke concentration value of the smoke in the obtained smoke signal, and record the time of obtaining the smoke signal at the same time;
[0031] S2. Judging whether the smoke concentration value exceeds the preset smoke concentration threshold, if the smoke concentration value does not exceed the smoke concentration threshold, then determine that the current smoke concentration is normal, and return to step S1, otherwise, enter step S3;
[0032] S3. Generate a smoke alarm trigger signal and send an alarm signal, monitor the current time distance from the time interval value of the smoke signal obtained in step S1, and enter the timing monitoring process S4;
[0033] S4. Acquire the smoke signal again when the time interval value between the current time and the last acquisition of the smoke signal ...
Embodiment 2
[0036] like figure 2 As shown, a smoke alarm device includes a smoke detector, a smoke sensor, a controller, a timer and an alarm. The smoke detector is electrically connected to the smoke sensor and the timer, and the controller is connected to the smoke detector and the smoke sensor respectively. , timer and alarm electrical connections.
[0037] The smoke detector is used to obtain a smoke signal, and transmits the obtained smoke signal to the smoke sensor, and the mode in which the smoke detector obtains the smoke signal includes a real-time acquisition mode and an interval acquisition mode, wherein the real-time acquisition mode is the current smoke signal. Real-time acquisition, the interval acquisition mode is to acquire smoke signals every 5 minutes.
[0038] The smoke sensor is used to detect the current smoke concentration value in the smoke signal obtained by the smoke detector, and transmit the detected current smoke concentration value to the controller.
[003...
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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...
Claims
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Application Information
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