A high-sensitivity smoke alarm, system and method

Abstract

The present disclosure provides a high-sensitivity smoke alarm, a system and a method, including a housing, a light source, a transmitting optical fiber, a receiving optical fiber, at least one smoke detection chamber and at least one reference chamber, a first inspection photodiode, a first reference Photodiodes and microcontrollers, by setting the smoke detection cavity and the reference cavity, and comparing the signals of the smoke detection cavity and the reference cavity during smoke detection, effectively overcome the false alarm of the smoke alarm caused by environmental factors such as temperature changes , by setting up multi-layer smoke detection layers, each layer is equipped with a smoke detection chamber and a reference chamber, and by detecting the smoke detection signal in each layer of smoke detection chambers, the layered detection of smoke is realized to prevent dust and other environmental factors from causing Only a certain layer or a few layers detect false alarms caused by "false smoke signals", thereby further improving the accuracy of smoke detection.

Description

technical field [0001] The present disclosure relates to the technical field of smoke alarms, in particular to a high-sensitivity smoke alarm, a system and a method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Ordinary photoelectric smoke alarms are divided into two types: shading type and scattering type, which are developed by utilizing the characteristic that the smoke generated during a fire can change the light intensity. Patent No. CN102622848B introduces a through-beam point-type optical fiber smoke detector, and patent No. CN102622847B introduces a reflective point-type optical fiber smoke detector. And receiving optical fiber for smoke detection, which reduces the cost of smoke detectors and eliminates the aging defects caused by electronic components. [0004] However, the inventors of the present disclosure have found in...

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Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the present disclosure provides a high-sensitivity smoke alarm, system and method, which effectively realizes double detection of black smoke and white smoke, and solves the problem of high false alarm rate of current smoke alarms , to better realize the precise detection and alarm of smoke

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