CN104616417A - Tunnel fire detection device based on subsonic wave - Google Patents

Tunnel fire detection device based on subsonic wave Download PDF

Info

Publication number
CN104616417A
CN104616417A CN201510075225.8A CN201510075225A CN104616417A CN 104616417 A CN104616417 A CN 104616417A CN 201510075225 A CN201510075225 A CN 201510075225A CN 104616417 A CN104616417 A CN 104616417A
Authority
CN
China
Prior art keywords
fire
tunnel
unit
infrasonic
burning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510075225.8A
Other languages
Chinese (zh)
Inventor
官洪运
张慧
路昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donghua University
National Dong Hwa University
Original Assignee
Donghua University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Donghua University filed Critical Donghua University
Priority to CN201510075225.8A priority Critical patent/CN104616417A/en
Publication of CN104616417A publication Critical patent/CN104616417A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The invention provides a tunnel fire detection device based on subsonic wave. The detection device is composed of a signal collection unit, a signal processing unit, an execution unit and a warning unit. The signal collection unit is used for detecting and collecting burning sound signals generated during a fire and transmitting the collected burning sound signals into the signal processing unit. The signal processing unit processes, analyzes and recognizes the burning sound signals. If a recognition result is that the sound is the burning sound generated by the fire, the warning unit is started through the execution unit to conduct warning. The device can monitor the fire control and safety conditions in a tunnel accurately in real time. Once the fire happens, a loudspeaker gives out an alarm immediately to enable vehicles in the tunnel to leave the fire site quickly and prevent the follow-up vehicles from entering the tunnel. Meanwhile, fire information is transmitted to a main control platform of the fire fighting department, remote warning is conducted by calling, and then fire fighters can arrive at the site timely, evacuate the vehicles and conduct rescue.

Description

A kind of based on infrasonic tunnel fire hazard sniffer
Technical field
The present invention relates to a kind of based on infrasonic tunnel fire hazard sniffer, the physical process that the sound that particularly burns produces, the application of infrasonic sensor and the detection of tunnel fire hazard and warning, belong to burning sound and detect and technical field of fire detection.
Background technology
1, based on the detection of burning sound
In fire detecting and alarm field, through people's unremitting effort, incident physical characteristics when fire is occurred, comprise cigarette, temperature, concentration, flame etc., carry out various, a large amount of theoretical research and experimental analysis, by being coupled mutually with detection method by the physical features of fire, have developed the tens of kinds of fire detectors such as temperature sensitive type, sense cigarette type, photosensitive type and gas-sensitive type.But people do not abandon the effort searching out more effective fire detecting method always, in the hope of reducing the loss caused due to fire to greatest extent.In recent years, some contactless fire detecting methods obtain the attention of people.Such as, the physical features such as the reaction of smoke transportation on image, burning sound, Fire Radiation spectrum, flame profile can be undertaken detecting and judging by relevant contactless algorithm.This kind of detection method carries out large-scale detection under open condition, such as large space building, forest etc., and its accuracy and promptness are all significantly better than contact fire detecting method.And the present invention can become the favourable of present stage detection means for the fire disaster analyzing system based on burning sound identification explored and supplement.
The high temperature that object produces in combustion, meeting heat ambient air, makes it to expand, mineralization pressure sound wave, and namely this acoustic pressure wave is burning sound, and burning sound can be divided into 3 parts by its frequency: audible range, ultrasonic wave zone and infrasonic sound wave zone.Containing many daily noises in audible range, it is very difficult for these noises and the burning range of sound being separated; In ultrasonic wave zone, although people's ear can not hear the sound in this frequency band, and less containing habitual noise, shown by statistics object burn results, due to the difference of combustible substance, what have is many containing radio-frequency component, and what have is few containing radio-frequency component, and what have does not even contain.Therefore, monitoring ultrasonic is utilized to be not suitable for all combustion phenomena.The feature of infrasonic sound wave zone is also similar with ultrasonic wave zone, can not be heard by people's ear, and also less containing habitual noise.Why there is this composition during object burning, is because air expansion and calory burning cause the slow variation of room air pressure, this frequency only several hertz.And can determine, the no matter burning of which kind of character, environment temperature is how, and humidity is how, all can there is infrasonic wave, and just infrasonic frequency is different.Therefore, the present invention utilizes the burning sound of infrasonic sound wave zone to carry out detection.
2, tunnel fire hazard
Along with the development of society, the increase of highway and railway mileage, tunnel traffic also develops rapidly, has railway, the vcehicular tunnel of crossing over mountain after mountain, has the submerged tunnel passing through rivers,lakes and seas.And the safety problem in tunnel is also day by day by common people are paid close attention to., once breaking out of fire, put out a fire to save life and property very difficult, and easily cause heavy losses in tunnel.Therefore, tunnel security against fire all must be paid much attention in countries in the world.
The reason of tunnel breaking out of fire:
(1) vehicle fire is the main hazard of tunnel fire hazard.According to interrelated data introduction, on average there is 0.5 ~ 1.5 fire in automobile approximately often row 1,000 ten thousand kilometers.Cause that the reason of automobile fire is electric wiring short-circuit fire, carburetor is on fire, truck pneumatic system is on fire.If Japanese tunnel big fire of closing the door in 1964 is exactly that auto electric line fault causes.
(2) goods on lorry causes fire.Have various vehicle to pass through in tunnel, their contained goods have plenty of flammable or inflammable articles, meet naked light and burning or spontaneous combustion occur.As USA New York " Holland " tunnel fire hazard in 1949, Japan's all good wild tunnel fire hazards of husband in 1977 were all meet kindling material due to goods to cause burning to cause.
(3) vehicle clashes into mutually on fire.Because road is narrower and small in tunnel, visibility is poor, and situation more complicated, easily vehicle accidents occurs.As Japan in 1971 closes the door tunnel fire hazard, the inferior tunnel fire hazard of Dutch valve in 1978, within 1979, Tianjin tunnel fire hazard burns in Japan, all clashes into mutually cause owing to there is traffic hazard, vehicle in tunnel.
Therefore, pole is necessary to provide a kind of sniffer for tunnel fire hazard.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of tunnel fire hazard sniffer can monitoring the security against fire situation in tunnel in real time, exactly.
In order to solve the problems of the technologies described above, technical scheme of the present invention is to provide a kind of based on infrasonic tunnel fire hazard sniffer, it is characterized in that: by signal gathering unit, signal processing unit, performance element and alarm unit composition, signal gathering unit is for detecting and gather the burning tone signal produced when fire occurs, and the burning tone signal collected is sent into signal processing unit, signal processing unit processes this burning tone signal, analyze and identify, if recognition result is the burning sound that fire produces, then start alarm unit by performance element and carry out alarm operation.
Preferably, described signal gathering unit is infrasonic sensor.
Preferably, described signal processing unit is made up of pre-amplifier unit and low-pass filter unit, pre-amplifier unit carries out amplification process to the signal that signal gathering unit collects, the burning sound infrasound signals that fire produces, at below 20Hz, is filtered the high frequency noise being greater than 20Hz by low-pass filter unit.
Preferably, described performance element is made up of drives module and circuit control module, and drives module is made up of comparer, diode and amplifier, and circuit control module is made up of a relay;
When fire occurs, the infrasonic wave input comparator that burning sound produces, make comparer export forward voltage, diode current flow, then through amplifier, final drives module exports high level, outputting circuit for relay conducting, and alarm unit is activated;
Otherwise when not having breaking out of fire, comparer exports reverse voltage, and diode ends, then drives module no-output, and outputting circuit for relay blocks, and alarm unit does not start.
Preferably, described alarm unit is divided into local warning and remote alarms two parts, realizes local warning, realize remote alarms by gsm module by loudspeaker.
Preferably, powered by tunnel road lamp power supply, and be equipped with the standby electricity of accumulator; During normal power supply, tunnel road lamp power supply charges a battery, and power failure of powering once tunnel, enables storage battery power supply.
Device provided by the invention on the one hand, can monitor the security against fire situation in tunnel real-time and accurately, once breaking out of fire in tunnel, loudspeaker will horn blew at once, so that the vehicle in tunnel withdraws scene of fire fast, and prevent subsequent vehicle from entering tunnel.On the other hand, fire information by gsm module, is sent to the overhead control platform in fire-fighting portion by this device, and calls and carry out remote alarms, so that fire fighter arrives in the very nick of time, on-the-spot vehicle of evacuating also implements rescue.
Accompanying drawing explanation
Fig. 1 is provided by the invention based on infrasonic tunnel fire hazard sniffer theory diagram;
Fig. 2 is the composition diagram of infrasonic sensor;
Fig. 3 is instrument amplifier AD620 fundamental diagram;
Fig. 4 is instrument amplifier AD620 pinouts;
Fig. 5 is low-pass filtering module structural representation;
Fig. 6 is low-pass filtering module amplitude-versus-frequency curve schematic diagram;
Fig. 7 is drives modular structure schematic diagram;
Fig. 8 is that infrasonic wave detects overall control circuit schematic diagram.
Embodiment
For making the present invention become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Fig. 1 is provided by the invention based on infrasonic tunnel fire hazard sniffer schematic diagram, and described is made up of signal gathering unit, signal processing unit, performance element and alarm unit based on infrasonic tunnel fire hazard sniffer.Signal gathering unit is realized by infrasonic sensor.Performance element is made up of drives module and circuit control module.Alarm unit is divided into local warning and remote alarms two parts, and loudspeaker realizes local warning, and global system for mobile communications gsm module realizes remote alarms.
Infrasonic sensor is for flutterring burning sound (infrasonic wave) signal catching and gather scene of fire, and the fire burning tone signal collected is sent into signal processing unit, the burning tone signal that signal processing unit is used for sending when burning to fire processes, analyzes and identifies, for the burning sound meeting fire generation, start local loudspeaker by performance element to report to the police, and startup gsm module carries out remote short messages and calls warning simultaneously.
Each unit concrete structure arrange and function as follows:
1. signal gathering unit
The present invention utilizes the burning sound of infrasonic sound wave zone to carry out detection, and infrasonic frequency is low, and wavelength is long, and penetration power is strong, and it is little to decay in communication process, can propagate far distance.Consider the factor of the aspects such as the ratio of performance to price, adopt condenser type infrasonic sensor, this infrasonic sensor has the plurality of advantages such as input impedance is higher, output impedance is lower.Condenser type infrasonic sensor forms primarily of vibrating diaphragm, rear pole plate, polarization power supply, prime amplifier, as shown in Figure 2.Vibrating diaphragm and fixed electorde form a capacity plate antenna, when extraneous infrasonic wave pressure action is to vibrating diaphragm, interelectrode capacity changes, cause the change of the quantity of electric charge on pole plate, the quantity of electric charge changes formation exchange current in time, flow through on resistance R and produce pressure drop at two ends, exporting alternating signal through fet amplifier.Wherein polarization power supply provides biased to electric capacity.
This condenser type infrasonic sensor parameter is as follows:
(1) frequency range: 0.1 ~ 20Hz
(2) dynamic range: 14.6 ~ 146db
(3) sensitivity: 50mv/pa
(4)-30db cutoff frequency: 2 ~ 4Hz
(5) temperature :-30 ~ 150 DEG C
The infrasound signals of burning sound is the low frequency signal of 0 ~ 20Hz, and this sensor can meet the parameter request gathering burning sound infrasound signals.
2. signal processing unit
Signal processing unit is made up of pre-amplifying module and low-pass filtering module.
2.1 pre-amplifying module
The signal that infrasonic sensor gathers is fainter, amplification process must be carried out, operational amplifier adopts the mode of differential input, effectively can suppress interference, because simulated experiment gathers the place of infrasound signals in outdoor, along with the movement of a large amount of vehicle and personnel, become the Consideration that priority is higher so anti-interference, the design of pre-amplification circuit will note 3 points:
(1) high input impedance.Due to weak output signal, high input impedance, after dividing potential drop, appreciably can amplify the signal of input end, the error that simultaneously signal source and transmission network resistance can also be suppressed not to mate and introduce.
(2) high-gain and wide gain-adjusted scope.
(3) high cmrr.Common-mode rejection ratio is the deciding factor of circuit anti-interference ability, common-mode rejection ratio is higher in theory, the antijamming capability of circuit is stronger, and the method for calculating is the ratio of the enlargement factor of common-mode signal (being often referred to interference and noise) and difference mode signal (debris flow infrasound signal).
In the selection of prime amplifier, select the integrated instrument amplifier AD620 that volume is little, have higher degree, as shown in Figure 3.This instrument amplifier has the features such as low maladjustment voltage, the high and low offset drift characteristic of precision, low-power consumption.This amplifier also has two advantages: one is that the scope that arranges of gain is wide, maximumly can reach 10000; Two is that the setting of gain is very convenient, the resistance of the resistance only accessed by outside and adjustable.
Bipolarity is inputted by the road high-precision difference that provided by input transistors Q1, Q2, can (wherein A1, A2 be operational amplifier at feedback control loop Q1-A1-R1 and Q2-A2-R2, the resistance that the output terminal that R1, R2 are respectively A1, A2 connects) in that the collector current of input transistors Q1, Q2 is obtained is constant, and then can at outside gain setting resistor R gupper effect input voltage, produce the differential gain of A1/A2 input thus, the computing formula of its gain is G=(R1+R2)/R g+ 1.Utilize unity gain subtracter A3 to remove common-mode signal, the single-ended REF pin current potential obtaining thus amounting to exports.
Composition graphs 4, adjust internal gain resistance R1, R2 until reach absolute value 24.7k Ω, only need adjustment transboundary one realize at the resistance of 1,8 pin, and make 4, the 7 positive and negative operating voltage in pin place equal, pin 6 can be obtained by the input voltage of 2,3 pins again to export and magnitude of voltage after amplifying, and using pin 5 as reference benchmark, if its ground connection, so the output of pin 6 is exactly the relative voltage between ground and pin 6.Its gain formula is: G = 49.4 kΩ R G + 1 , R G = 49.4 kΩ G - 1 .
2.2 low-pass filtering module
Consider that burning sound infrasound signals is at below 20Hz, need filter high frequency noise, so the low-pass filter needing use cutoff frequency slightly to exceed any than 20Hz is to complete this function, the low-pass filtering module that Fig. 5 shows is the active second-order low-pass filter circuit of voltage controlled voltage source, and it forms primarily of operational amplifier TL084.On the one hand, resistance R1 is connected to the in-phase input end of operational amplifier by resistance R2, and in-phase input end is connected to ground by electric capacity C2; On the other hand, resistance R1 is connected to the inverting input of operational amplifier by electric capacity C1, and inverting input is directly connected with the output terminal of operational amplifier.This filtering circuit compares the demand meeting design.The transport function of this second order active low-pass filter is formula (1)
G ( s ) = U 0 ( s ) U i ( s ) = A 0 ( s w n ) 2 + 1 Q · s w n + 1 = A 0 s 2 + w n Q s + w n 2 - - - ( 1 )
Wherein U 0s output voltage that () is wave filter, U is input voltage that () is wave filter, A 0for zero-frequency gain, w nfor the cutoff frequency of wave filter, Q is quality factor.
Quality factor are formula (2), wherein passband gain A vf=1
Q = R 1 R 2 C 1 C 2 C 2 ( R 1 + R 2 ) + R 1 C 1 ( 1 - A vf ) - - - ( 2 )
Again according to the computing formula (3) of cutoff frequency
w n = 1 R 1 R 2 C 1 C 2 = 2 π f c - - - ( 3 )
Cutoff frequency can be obtained f c = 1 2 π R 1 R 2 C 1 C 2 ≈ 24 Hz
Emulated the low-pass filter of design by Multisim10.0, its amplitude-versus-frequency curve as shown in Figure 6.The cutoff frequency of the 21.936Hz shown in Fig. 6 wave filter for this reason, the pad value of 3.044dB wave filter for this reason, contrast theoretical value is basically identical, can meet the demands.
3. performance element
Performance element is made up of drives module and circuit control module.
3.1 drives modules
Drives module as shown in Figure 7, this module for identify whether be fire occur time infrasonic wave, but not the interference of extraneous other sound source.Drives module is made up of comparer and amplifier.When fire occurs, the peculiar infrasonic wave input comparator that burning sound produces, make comparer export forward voltage, diode current flow, then through amplifier, final driver module exports high level; Otherwise comparer exports reverse voltage when not having a breaking out of fire, diode ends, then circuit disconnects, driver module no-output.
3.2 circuit control module
Circuit control module is made up of a relay, when there is no breaking out of fire in tunnel, and driving circuit no-output, outputting circuit for relay blocks, in open-circuit condition, and therefore cannot conducting respond module, loudspeaker can not give the alarm, and gsm module also can not send fire information; When in tunnel during breaking out of fire, driving circuit exports high level, outputting circuit for relay conducting, now respond module below will be activated, namely loudspeaker sounds the alarm, fire information is sent to the overhead control platform in fire-fighting portion by gsm module, and calls and carry out remote alarms, so that fire fighter arrives in the very nick of time, on-the-spot vehicle of evacuating also implements rescue.
4. alarm unit
Alarm unit is divided into local warning and remote alarms two parts.Loudspeaker realizes local warning, infrasonic sensor is placed in the top in tunnel by certain distance interval, during breaking out of fire, in whole piece tunnel and tunnel's entrance and exit place all can sound the alarm, remind vehicle in tunnel to withdraw fast, and prevent follow-up vehicle from entering tunnel; GSM realizes remote alarms, when fire occurs, fire detecting arrangement can send fire information by gsm module to long-range fire-fighting portion overhead control platform, comprise the time of fire generation, place, and call and carry out remote alarms, so that fire fighter arrives in the very nick of time, on-the-spot vehicle of evacuating also implements rescue.
Composition graphs 8, during device work provided by the invention, specifically comprises following four steps:
Step 1: top infrasonic sensor being placed in tunnel by certain distance interval, for detecting and gather the burning sound (infrasonic wave) produced when fire occurs, sensor receiving plane can design the fan-shaped acoustic cavity structure of wide-angle, to increase the sound field intensity of burning sound.
Step 2: the burning sound collected by infrasonic sensor delivers to signal-processing board through shielding line, amplification, the filtering of complete pair signals, the process such as to compare, to identify whether to be the infrasonic wave that fire occurs, but not the interference of extraneous other sound source.
Step 3: to the infrasonic wave being confirmed to be fire generation, starts local loudspeaker and reports to the police, start gsm module simultaneously, sends note and calls and carry out remote alarms.
This device is powered and is adopted tunnel road lamp power supply to power, and is equipped with the standby electricity of accumulator, and power supply charges a battery at ordinary times, and power failure of powering once tunnel, enables storage battery power supply.

Claims (6)

1. one kind based on infrasonic tunnel fire hazard sniffer, it is characterized in that: be made up of signal gathering unit, signal processing unit, performance element and alarm unit, signal gathering unit is for detecting and gather the burning tone signal produced when fire occurs, and the burning tone signal collected is sent into signal processing unit, signal processing unit processes this burning tone signal, analyze and identifies, if recognition result is the burning sound that fire produces, then starts alarm unit by performance element and carry out alarm operation.
2. as claimed in claim 1 a kind of based on infrasonic tunnel fire hazard sniffer, it is characterized in that: described signal gathering unit is infrasonic sensor.
3. as claimed in claim 1 a kind of based on infrasonic tunnel fire hazard sniffer, it is characterized in that: described signal processing unit is made up of pre-amplifier unit and low-pass filter unit, pre-amplifier unit carries out amplification process to the signal that signal gathering unit collects, the burning sound infrasound signals that fire produces, at below 20Hz, is filtered the high frequency noise being greater than 20Hz by low-pass filter unit.
4. as claimed in claim 1 a kind of based on infrasonic tunnel fire hazard sniffer, it is characterized in that: described performance element is made up of drives module and circuit control module, drives module is made up of comparer, diode and amplifier, and circuit control module is made up of a relay;
When fire occurs, the infrasonic wave input comparator that burning sound produces, make comparer export forward voltage, diode current flow, then through amplifier, final drives module exports high level, outputting circuit for relay conducting, and alarm unit is activated;
Otherwise when not having breaking out of fire, comparer exports reverse voltage, and diode ends, then drives module no-output, and outputting circuit for relay blocks, and alarm unit does not start.
5. as claimed in claim 1 a kind of based on infrasonic tunnel fire hazard sniffer, it is characterized in that: described alarm unit is divided into local warning and remote alarms two parts, realize local warning by loudspeaker, realize remote alarms by gsm module.
6. one as claimed in claim 1 is based on infrasonic tunnel fire hazard sniffer, it is characterized in that: powered by tunnel road lamp power supply, and is equipped with the standby electricity of accumulator; During normal power supply, tunnel road lamp power supply charges a battery, and power failure of powering once tunnel, enables storage battery power supply.
CN201510075225.8A 2015-02-12 2015-02-12 Tunnel fire detection device based on subsonic wave Pending CN104616417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510075225.8A CN104616417A (en) 2015-02-12 2015-02-12 Tunnel fire detection device based on subsonic wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510075225.8A CN104616417A (en) 2015-02-12 2015-02-12 Tunnel fire detection device based on subsonic wave

Publications (1)

Publication Number Publication Date
CN104616417A true CN104616417A (en) 2015-05-13

Family

ID=53150849

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510075225.8A Pending CN104616417A (en) 2015-02-12 2015-02-12 Tunnel fire detection device based on subsonic wave

Country Status (1)

Country Link
CN (1) CN104616417A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105336083A (en) * 2015-12-03 2016-02-17 山东大学 Tunnel fire early warning sensor based on smart materials and road surface layout system of tunnel fire early warning sensor
CN105372699A (en) * 2015-12-14 2016-03-02 中国矿业大学 Infrasound detection device and method of determining goaf fire area of coal field
CN109612573A (en) * 2018-12-06 2019-04-12 南京林业大学 A kind of crown fire and ground fire detection method based on noise spectrum analysis
CN110761840A (en) * 2019-09-20 2020-02-07 山东科技大学 Coal mine goaf fire zone detection system and method based on infrasonic wave information transmission
CN112393796A (en) * 2020-11-18 2021-02-23 重庆工程职业技术学院 Suspension tunnel vibration noise detection device
CN114283553A (en) * 2021-12-30 2022-04-05 新疆农业大学 Multi-information acquisition's cotton picker fire detection and early warning system
CN115909628A (en) * 2022-10-26 2023-04-04 广州国巡机器人科技有限公司 Forest fire detection method and system based on infrasonic wave detection technology

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101059897A (en) * 2006-04-21 2007-10-24 同济大学 A novel tunnel fire pre-warning system and control method
CN203519806U (en) * 2013-11-05 2014-04-02 邯郸派瑞电器有限公司 Ultraviolet lamp fault detection device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101059897A (en) * 2006-04-21 2007-10-24 同济大学 A novel tunnel fire pre-warning system and control method
CN203519806U (en) * 2013-11-05 2014-04-02 邯郸派瑞电器有限公司 Ultraviolet lamp fault detection device

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
孙玉梅: "利用燃烧音频的火灾探测系统", 《消防技术与产品信息》 *
李铂颖: "基于DSP 的音频火灾报警方案", 《电声技术》 *
蒋静学: "基于燃烧音识别的火灾探测系统的研究与设计", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 *
蒋静学等: "时频分析方法在燃烧音频信号分析中的应用研究", 《现代电子技术》 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105336083A (en) * 2015-12-03 2016-02-17 山东大学 Tunnel fire early warning sensor based on smart materials and road surface layout system of tunnel fire early warning sensor
CN105336083B (en) * 2015-12-03 2018-06-29 山东大学 Tunnel fire hazard early warning sensor and its road surface arranging system based on smart material
CN105372699A (en) * 2015-12-14 2016-03-02 中国矿业大学 Infrasound detection device and method of determining goaf fire area of coal field
CN109612573A (en) * 2018-12-06 2019-04-12 南京林业大学 A kind of crown fire and ground fire detection method based on noise spectrum analysis
CN110761840A (en) * 2019-09-20 2020-02-07 山东科技大学 Coal mine goaf fire zone detection system and method based on infrasonic wave information transmission
CN112393796A (en) * 2020-11-18 2021-02-23 重庆工程职业技术学院 Suspension tunnel vibration noise detection device
CN112393796B (en) * 2020-11-18 2022-11-18 重庆工程职业技术学院 Suspension tunnel vibration noise detection device
CN114283553A (en) * 2021-12-30 2022-04-05 新疆农业大学 Multi-information acquisition's cotton picker fire detection and early warning system
CN115909628A (en) * 2022-10-26 2023-04-04 广州国巡机器人科技有限公司 Forest fire detection method and system based on infrasonic wave detection technology

Similar Documents

Publication Publication Date Title
CN104616417A (en) Tunnel fire detection device based on subsonic wave
CN206516023U (en) Based on infrasonic tunnel fire hazard detection device
CN203786851U (en) Novel pickup alarm
CN101577036B (en) Earthquake alarm
CN102663878A (en) Automatic alarm device for car accidents
CN104476986A (en) GSM-based vehicle safety monitoring system and monitoring method
CN105584545A (en) Computer communication trolley based on multiple communication functions
CN104064026B (en) Can the taxi safety monitoring system and method for monitor hazardous article and alert
CN207833655U (en) Automobile fire detecting alarm
CN101888718A (en) Toxic or combustible gas sensor wireless detection network system and monitoring method thereof
CN107689089A (en) A kind of new-energy automobile trouble-shooter based on Internet of Things
CN107702753A (en) The safety monitoring device and its monitoring method of electrokinetic cell bag
CN107703107A (en) A kind of diesel car emission smoke intensity real-time detecting system and detection method
CN109353377A (en) City railway vehicle security information monitor control system
CN201233648Y (en) Vehicle mounted drunken driving detection apparatus and drunken driving detection system
CN202576563U (en) Laser cladding real-time monitoring system based on zigbee wireless sensing technology
CN203941444U (en) The online mounted mass supervising device of city slag vehicles
CN118038622A (en) Early warning system for coping with external fire disaster by hydrogen fuel forklift
CN105606774A (en) Vehicle-mounted intelligent safety monitoring system and method
CN202690133U (en) Oil-well monitoring system
CN202150170U (en) Dangerous chemicals leakage monitoring device
CN105277903A (en) Method for performing remote monitoring on UPS
CN108490126A (en) A kind of bus inflammable gas monitoring system and automatic monitoring method
CN204256885U (en) A kind of anti-outside destroy system of power cable
CN212322396U (en) Bus fire very early intelligent alarm system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150513