CN110473378A - A kind of fire detecting method based on infrared sensor - Google Patents
A kind of fire detecting method based on infrared sensor Download PDFInfo
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- CN110473378A CN110473378A CN201810452642.3A CN201810452642A CN110473378A CN 110473378 A CN110473378 A CN 110473378A CN 201810452642 A CN201810452642 A CN 201810452642A CN 110473378 A CN110473378 A CN 110473378A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000013528 artificial neural network Methods 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 14
- 230000003321 amplification Effects 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 8
- 238000000605 extraction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
A kind of fire detecting method based on infrared sensor, belong to sensor detecting field, it is mainly by window, shield shell, infrared sensor, pre-amplification circuit module, converter, filter, FFT transform module, what characteristic extracting module and neural network recognization module formed, it is characterized by: the window is connected with shielding shell, shielding shell is connected with infrared sensor, the signal that infrared sensor detects is using pre-amplification circuit module, pre-amplification circuit module is connected with converter, converter is connected with filter, filter is connected with FFT transform module, characteristic extracting module is connected with neural network recognization module, present invention utilizes the recognizers of neural network analysis fire.The neural network obtained using this method has good recognition capability to the various flames of indoor range.
Description
Technical field
The present invention relates to a kind of fire detecting methods based on infrared sensor, belong to sensor detecting field.
Background technique
The physical essence of infra-red radiation is heat radiation, it is rotation and vibration due to interior of articles molecule and generates,
Degree is mainly determined by the temperature of object.Temperature is higher, and the infrared ray of radiation is more, and the energy of radiation is stronger.Usual institute
Object is all the source of infrared radiation, and the infrared light wavelength only emitted is different.Flame spectrum has from ultraviolet, visible light to infrared
Energy radiation, but 4.35 μm in infrared band nearby have a peak value, simultaneously because the solar radiation of this wavelength is because of atmosphere
Absorption and strong attenuation, therefore the wave band is the important wave band for flame detecting.The present invention researches and develops a kind of based on red
The fire detecting method of outer sensor.
Summary of the invention
In view of the above deficiencies, the present invention provides a kind of fire detecting methods based on infrared sensor.
The present invention is achieved by the following technical solutions: a kind of fire detecting method based on infrared sensor, is main
It will be by window, shielding shell, infrared sensor, pre-amplification circuit module, converter, filter, FFT transform module, spy
What sign extraction module and neural network recognization module formed, it is characterised in that: the window is connected with shielding shell, and shielding is outer
Shell is connected with infrared sensor, and the signal that infrared sensor detects is using pre-amplification circuit module, preposition amplification electricity
Road module is connected with converter, and converter is connected with filter, and filter is connected with FFT transform module, feature
Extraction module is connected with neural network recognization module.
The shielding shell makes sensor and surrounding air have good thermal insulation, avoids sensor by empty around
The disturbance of gas enhances stability.
The filter can remove the High-frequency Interference in waveform.
The invention has the beneficial effect that neural network is utilized in the fire detecting method of the invention based on infrared sensor
Analyze the recognizer of fire.The neural network obtained using this method has good identification to the various flames of indoor range
Ability.
Detailed description of the invention
Fig. 1 is system schematic of the invention.
In figure, 1, window, 2, shielding shell, 3, infrared sensor, 4, pre-amplification circuit module, 5, converter, 6,
Filter, 7, FFT transform module, 8, characteristic extracting module, 9, neural network recognization module.
Specific embodiment
A kind of fire detecting method based on infrared sensor, be mainly by window 1, shielding shell 2, infrared sensor 3,
Pre-amplification circuit module 4, converter 5, filter 6, FFT transform module 7, characteristic extracting module 8 and neural network recognization
What module 9 formed, it is characterised in that: the window 1 is connected with shielding shell 2, and shielding shell 2 is connected with infrared sensor 3
It connects, the signal that infrared sensor 3 detects is using pre-amplification circuit module 4, pre-amplification circuit module 4 and converter
5 are connected, and converter 5 is connected with filter 6, and filter 6 is connected with FFT transform module 7,8 He of characteristic extracting module
Neural network recognization module 9 is connected.
The shielding shell 2 makes sensor and surrounding air have good thermal insulation, avoids sensor by surrounding
The disturbance of air enhances stability.
The filter 6 can remove the High-frequency Interference in waveform.
At work, pyroelectric infrared sensor is mounted in shielding shell the present apparatus, and the effect of shell is to make sensor
There is good thermal insulation with surrounding air, avoid disturbance of the sensor by surrounding air, enhance stability.Extraneous is infrared
Window on radiation transmission shell is irradiated on the sensitive window of sensor, the variation for causing sensor to export.The output of sensor
Signal enters computer system through AD conversion again after pre-amplification circuit amplifies, and computer acquisition simultaneously saves the wave being collected into
Shape carries out low-pass filtering to waveform, removes the High-frequency Interference in waveform, and waveform progress FFT transform is then obtained spectrogram, is mentioned
Take characteristic value therein, be input to neural network, neural network judged according to the good parameter of prior learning this waveform whether be
Fire waveform.
For the ordinary skill in the art, introduction according to the present invention, do not depart from the principle of the present invention with
In the case where spirit, changes, modifications that embodiment is carried out, replacement and variant still fall within protection scope of the present invention it
It is interior.
Claims (3)
- It is mainly by window, shielding shell, infrared sensor, preposition 1. a kind of fire detecting method based on infrared sensor Amplification circuit module, converter, filter, FFT transform module, characteristic extracting module and neural network recognization module composition , it is characterised in that: the window is connected with shielding shell, and shielding shell is connected with infrared sensor, infrared sensor The signal detected is connected using pre-amplification circuit module, pre-amplification circuit module with converter, converter It is connected with filter, filter is connected with FFT transform module, and characteristic extracting module is connected with neural network recognization module It connects.
- 2. a kind of fire detecting method based on infrared sensor as described in claim 1, it is characterised in that: the shielding Shell makes sensor and surrounding air have good thermal insulation, avoids disturbance of the sensor by surrounding air, and enhancing is stablized Property.
- 3. a kind of fire detecting method based on infrared sensor as described in claim 1, it is characterised in that: the filtering Device can remove the High-frequency Interference in waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810452642.3A CN110473378A (en) | 2018-05-13 | 2018-05-13 | A kind of fire detecting method based on infrared sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810452642.3A CN110473378A (en) | 2018-05-13 | 2018-05-13 | A kind of fire detecting method based on infrared sensor |
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| Publication Number | Publication Date |
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| CN110473378A true CN110473378A (en) | 2019-11-19 |
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| CN201810452642.3A Pending CN110473378A (en) | 2018-05-13 | 2018-05-13 | A kind of fire detecting method based on infrared sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113743328A (en) * | 2021-09-08 | 2021-12-03 | 无锡格林通安全装备有限公司 | Flame detection method and device based on long-term and short-term memory model |
| CN113916381A (en) * | 2021-10-11 | 2022-01-11 | 无锡格林通安全装备有限公司 | Flame detection method and device based on FFT, BP and rectangular filter bank |
| CN113971863A (en) * | 2021-10-19 | 2022-01-25 | 无锡格林通安全装备有限公司 | Flame detection method based on FFT-GMM-K neighbor |
-
2018
- 2018-05-13 CN CN201810452642.3A patent/CN110473378A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113743328A (en) * | 2021-09-08 | 2021-12-03 | 无锡格林通安全装备有限公司 | Flame detection method and device based on long-term and short-term memory model |
| CN113916381A (en) * | 2021-10-11 | 2022-01-11 | 无锡格林通安全装备有限公司 | Flame detection method and device based on FFT, BP and rectangular filter bank |
| CN113971863A (en) * | 2021-10-19 | 2022-01-25 | 无锡格林通安全装备有限公司 | Flame detection method based on FFT-GMM-K neighbor |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191119 |
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| WD01 | Invention patent application deemed withdrawn after publication |