A Dynamic Smoke Detection Algorithm Based on Time Wheel

Abstract

The invention discloses a dynamic smoke detection algorithm based on a time wheel, which successively includes three stages: detection stage, time wheel approaching successively and time wheel exiting; the first stage calculates the average value of non-luminous voltage m x , average value of luminous voltage m y And the compensation value Δm, the second stage of the time wheel approaching successively, change the weight of the time wheel, calculate the actual smoke concentration Δe, reach the alarm threshold alarm, enter the time wheel exit stage when it is less than the alarm threshold, and exit the time wheel in the third stage, calculate the exit weight, If the continuous volatility keeps the weights until the Δe trend is down entering the time round exit and the Δe trend is rising entering the successive approximation. The invention can use software to replace the smoke-specific detection chip, accurately determine the photoelectric value in the smoke optical maze, and then determine whether a smoke alarm occurs. The invention reduces the cost and improves the product communication expansion capability.

Description

technical field [0001] The invention belongs to the field of fire-fighting equipment, and relates to an operation technology of a photoelectric smoke alarm, in particular to a dynamic smoke detection algorithm based on a time wheel. Background technique [0002] In the prior art, the mode of single-chip microcomputer plus special smoke detection chip is mainly used. In this way, the special detection chip sends out the alarm signal in the form of level. During the operation, the detection parameters cannot be dynamically adjusted, and the sensitivity is fixed. In some environments, the probability of missed detection and false detection is high. [0003] The traditional single-chip microcomputer plus smoke detection chip solution is to burn various parameters of smoke detection into the chip through special programming software when leaving the factory. The single-chip microcomputer is only used as a communication function and does not participate in smoke detection and smok...

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Problems solved by technology

[0002] In the prior art, the mode of single-chip microcomputer plus special smoke detection chip is mainly used. In this way, the special detection chip sends out the alarm signal in the form of level. During the operation, the detection parameters cannot be dynamically adjusted, and the sensitivity is fixed. In some environments, the probability of missed detection and false detection is high

[0003] The traditional single-chip microcomputer plus smoke detection chip solution is to burn various parameters of smoke detection into the chip through special programming software when leaving the factory. The single-chip microcomputer is only used as a communication function and does not participate in smoke detection and smoke alarm. The judgment cannot quickly adjust the algorithm judgment parameters according to the environment, effectively quantify the data information, and the detection mode is single

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