Smoke detection method and device, smoke alarm and storage medium

A technology of a smoke alarm and a detection method, which is applied in the direction of alarms, fire alarms, and fire alarms that rely on the effect of smoke/gas, can solve the problems of false alarms of smoke alarms, avoid false alarms, and solve false alarms. The effect of alarming and speeding up the detection frequency

Inactive Publication Date: 2019-08-16
SITERWELL ELECTRONICS CO LTD
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  • Abstract
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Problems solved by technology

[0005] The embodiment of the present invention provides a smoke detection method, aiming to solve the problem of false alarms of smoke alarms

Method used

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  • Smoke detection method and device, smoke alarm and storage medium
  • Smoke detection method and device, smoke alarm and storage medium
  • Smoke detection method and device, smoke alarm and storage medium

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] In the embodiment of the present invention, the detection frequency of smoke is accelerated by adjusting the smoke concentration detection cycle, and the smoke type is judged by calculating the ratio of the electrical signal increment caused by the first transmission signal to the second transmission signal, so that the smoke alarm can be activated before alarming. According to different types of smoke, choose different adjustment methods to adjust the smoke alarm threshold of the smoke alarm. If the smoke is not caused by fire, increase the smoke alarm threshold, thereby reducing the sensiti...

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Abstract

The invention is applicable to the technical field of security and protection, and provides a smoke detection method. The method comprises the following steps: when it is detected that current smoke concentration meets a set concentration threshold value, a current detection period of a smoke alarm is adjusted to be a rapid detection period, and a detection frequency of the smoke concentration isincreased; a ratio of an electric signal increment caused by a first emitted signal to an electric signal increment caused by a second emitted signal is calculated; a smoke alarm threshold value of the smoke alarm is increased when the smoke is judged to be not generated by non fire according to the ratio; and the wavelengths of the first emitted signal and the second emitted signal are different.According to the method, the type of the smoke can be judged by the ratio of the electric signal increment caused by the first emitted signal to the electric signal increment caused by the second emitted signal, different smoke types are identified and different alarm modes are selected, so that the problem of false alarm of the smoke alarm is solved.

Description

technical field [0001] The invention belongs to the field of security technology, and in particular relates to a smoke detection method, a device, a smoke alarm and a storage medium. Background technique [0002] Smoke alarms are usually installed in large buildings such as communities, public areas, and offices. Since objects are burned to generate smoke, smoke alarms will be equipped with multiple smoke alarms in the building according to their coverage. [0003] Smoke alarms are distinguished from the perspective of the sensors used, including photoelectric smoke alarms, etc., where there is an optical maze inside the photoelectric smoke alarm, which is composed of a transmitter, a receiver, and a labyrinth chamber. The structure of the labyrinth chamber is composed of relatively complex light reflection, refraction surfaces or ribs. After the light is uniquely processed, the smoke can reflect the smoke concentration after entering the special structural cavity. When the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/107
CPCG08B17/107G08B17/10G08B29/185G08B29/145
Inventor 陈东方黄星星施清钦
Owner SITERWELL ELECTRONICS CO LTD
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