CN104766419B - Fire-fighting sound light alarming circuit and fire-fighting combined aural and visual alarm - Google Patents
Fire-fighting sound light alarming circuit and fire-fighting combined aural and visual alarm Download PDFInfo
- Publication number
- CN104766419B CN104766419B CN201410002148.9A CN201410002148A CN104766419B CN 104766419 B CN104766419 B CN 104766419B CN 201410002148 A CN201410002148 A CN 201410002148A CN 104766419 B CN104766419 B CN 104766419B
- Authority
- CN
- China
- Prior art keywords
- module
- fire
- led
- drive module
- resistance
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
Abstract
Fire-fighting sound light alarming circuit passes through the motion state that mobile induction module incudes user, if user's persistent movement, the low and high level signal that mobile induction module staggeredly issues will not trigger alarm drive module, and therefore, LED will not be lighted will not beep with buzzer.It is more than time rating if user's stop motion, mobile induction module then continuously sends out high level or low level, to trigger alarm drive module.Alarm drive module control audio-switch module and LED drive module conducting so that LED is lighted, buzzer beeps, i.e., fire fighter's stop motion when think that fire fighter faces a danger, thus realize sound and light of alarm.Further, it would be desirable to provide a kind of fire-fighting combined aural and visual alarms.
Description
Technical field
The present invention relates to fire protection warning circuits, more particularly to a kind of simple fire-fighting sound light alarming circuit and fire-fighting acousto-optic
Alarm.
Background technique
Combined aural and visual alarm is made of detector and controlling alarm host, is widely used in petroleum, combustion gas, chemical industry, oil depot etc.
There are the petrochemical industries of toxic gas, are to guarantee production and the person to the leakage situation of hazardous area inside and outside sensing chamber
The important instrument of safety.When tested place is there are when toxic gas, gas signal is converted into voltage signal with detector or electric current is believed
Number it is transmitted to alarming instrument, instrument shows the percent concentration value of toxic gas lower explosion limit.When concentration of toxic gases is more than
Sound and light alarm signal prompt occurs when alarm setting value, operator on duty takes safety measures in time, avoids blast accident.But
It is the usually fixation of above-mentioned combined aural and visual alarm, is used for specific position, detection is also gas concentration.And fire fighter is putting out a fire
In the process, judge whether in a safe condition to fire fighter is needed.
Summary of the invention
Based on this, it is necessary to provide it is a kind of can judge fire fighter whether An Quan fire-fighting sound light alarming circuit.
A kind of fire-fighting sound light alarming circuit incudes the motion state of user, including mobile sense when carrying for user
Answer module, alarm drive module, LED drive module and audio-switch module；
The input terminal of the input termination input power of the mobile induction module, output the termination drive module of alarming,
Ground terminal ground connection；The power supply termination input power of the alarm drive module, the first output terminate the audio-switch module
First input end, second output terminal connect the second input terminal of the audio-switch module, third output terminates the LED driving mould
The input terminal of block, ground terminal ground connection；The power supply termination input power of the LED drive module, output terminate the cathode of LED, connect
Ground terminal ground connection；The anode of the LED connects input power；The first output end and second output terminal of the audio-switch module are distinguished
Connect the positive and negative anodes of buzzer, the ground terminal ground connection of the audio-switch module；
The mobile induction module staggeredly issues high level and low level signal, the alarm during user movement
After drive module receives staggered low and high level signal, the LED drive module and the audio-switch module are not driven, it is described
LED extinguishes, and the buzzer does not make a sound；
The mobile induction module is in user's stop motion, within time rating, continuously sends out high level or low level
When signal, the first output end and second output terminal of the alarm drive module export high level, the alarm drive module
Third output end exports permanent High level, and the LED drive module drives the LED to light when receiving permanent High level；It is described
The first input end of audio-switch module and the second input terminal receive high level, the buzzer connecting with the audio-switch module
It beeps.
The mobile induction module includes mercury switch, resistance R2 and electrolytic capacitor C4 in one of the embodiments,；
Mercury switch one end ground connection, another termination resistance R2, another termination input power of resistance R2, institute
The anode for stating electrolytic capacitor C4 connects input power, cathode ground connection, and the points of common connection of the mercury switch and the resistance R2 is
The output end of the mobile induction module.
The alarm drive module includes microcontroller U1, resistance R3, crystal oscillator in one of the embodiments,
Y1, capacitor C2 and capacitor C3；
The crystal oscillator Y1 is connected between the end X2 and the end X3 of the microcontroller U1, the capacitor C2 with it is described
Capacitor C3 is series between the end X2 and the end X3 of the microcontroller U1, the points of common connection of the capacitor C2 and the capacitor C3
Ground connection；A termination input power of the resistance R3, the resetting end of another termination microcontroller U1, the microcontroller U1
The end IO5, the end IO2, the end IO3, the end IO1 correspond to input terminal, the first output end, second output terminal of the alarm drive module
With third output end.
The LED drive module includes chip T6327A and resistance R1 in one of the embodiments,；
The resistance R1 mono- terminates the end SET of the chip T6327A, other end ground connection, the SET of the chip T6327A
End, the end LED and vdd terminal correspond to input, output end and the power end of the LED drive module.
It in one of the embodiments, further include capacitor C1, the capacitor C1 mono- terminates input power, other end ground connection.
The audio-switch module includes triode Q1, triode Q2, resistance R4 and resistance in one of the embodiments,
R5；
The resistance R4 and resistance R5 is series at the collector of the triode Q1 and the current collection of the triode Q2
Between pole, the emitter of the emitter of the triode Q1 and the triode Q2 are grounded, and the base stage of the triode Q1 is
The first input end of the audio-switch module, the base stage of the triode Q2 are the second input of the audio-switch module
The points of common connection of end, the collector of the triode Q1 and the resistance R4 are the first output of the audio-switch module
The points of common connection of end, the collector of the triode Q2 and the resistance R5 are the second output of the audio-switch module
End.
Above-mentioned fire-fighting sound light alarming circuit passes through the motion state that mobile induction module incudes user, if user persistently transports
Dynamic, the mobile induction module low and high level signal issued that interlocks will not trigger alarm drive module, therefore, LED will not light and
Buzzer will not beep.It is more than time rating if user's stop motion, mobile induction module then continuously sends out high level
Or low level, to trigger alarm drive module.Drive module of alarming control audio-switch module and LED drive module conducting,
So that LED is lighted, buzzer beeps, i.e., fire fighter's stop motion when think that fire fighter faces a danger, thus it is real
Existing sound and light of alarm.
In addition, also mention one kind can judge fire fighter whether An Quan fire-fighting combined aural and visual alarm.
A kind of fire-fighting combined aural and visual alarm, including above-mentioned fire-fighting sound light alarming circuit, buzzer and LED, the fire-fighting acousto-optic
Warning circuit is separately connected the buzzer and the LED.
The LED is red in one of the embodiments,.
Above-mentioned fire-fighting combined aural and visual alarm incudes the motion state of user by fire-fighting sound light alarming circuit, if user persistently transports
Dynamic, LED and buzzer do not work.If user's stop motion is more than time rating, fire-fighting sound light alarming circuit controls LED point
Bright, buzzer beeps, i.e., fire fighter's stop motion when think that fire fighter faces a danger, thus realize sound-light alarm
Function.
Detailed description of the invention
Fig. 1 is the module map of fire-fighting sound light alarming circuit；
Fig. 2 is the schematic diagram of fire-fighting sound light alarming circuit.
Specific embodiment
As shown in Figure 1, being the module map of fire-fighting sound light alarming circuit.
A kind of fire-fighting sound light alarming circuit incudes the motion state of user, including mobile sense when carrying for user
Answer module 101, alarm drive module 102, LED drive module 103 and audio-switch module 104.
The input termination input power of the mobile induction module 101, output termination the defeated of drive module 102 of alarming
Enter end, ground terminal ground connection；The power supply termination input power of the alarm drive module 102, the first output terminate the acoustic control and open
Close the first input end of module 104, second output terminal connects the second input terminal of the audio-switch module 104, third output end
Connect input terminal, the ground terminal ground connection of the LED drive module 103；The power supply termination input power of the LED drive module 103,
The cathode of output termination LED, ground terminal ground connection；The anode of the LED connects input power；The of the audio-switch module 104
One output end and second output terminal connect the positive and negative anodes of buzzer, the ground terminal ground connection of the audio-switch module 104 respectively.
The mobile induction module 101 staggeredly issues high level and low level signal, the report during user movement
After alert drive module 102 receives staggered low and high level signal, the LED drive module 103 and the audio-switch are not driven
Module 104, the LED extinguish, and the buzzer does not make a sound；
The mobile induction module 101 is in user's stop motion, within time rating, continuously sends out high level or low electricity
When ordinary mail, the first output end and second output terminal of the alarm drive module 102 export high level, and the alarm drives mould
The third output end of block 102 exports permanent High level, and the LED drive module 103 drives the LED when receiving permanent High level
It lights；The first input end of the audio-switch module 104 and the second input terminal receive high level, with the audio-switch module
The buzzer of 104 connections beeps.
Mobile induction module 101 is used to incude the motion state of user.Specifically, user during persistent movement, moves
Dynamic induction module 101 staggeredly issues high level and low level.For user when static, mobile induction module 101 continuously sends out high electricity
Flat or low level.The high level or low level that mobile induction module 101 is continuously sent out can trigger alarm drive module 102.
Drive module 102 of alarming is used for when receiving lasting high level or low level, drive LED drive module 103 and
Audio-switch module 104.If staggeredly received high level and low level, alarm drive module 102 does not drive LED drive module
103 and audio-switch module 104.LED drive module 103 and audio-switch module 104 do not work, i.e. LED extinguishes, and buzzer is not
It makes a sound.
LED drive module is used for the driving LED after the driving signal for receiving alarm drive module 102 and lights.
Audio-switch module 104 is connected after being used to receive the high level that alarm drive module 102 exports, so that buzzing
Device beeps.
As shown in Fig. 2, being the schematic diagram of fire-fighting sound light alarming circuit.
Mobile induction module 101 includes mercury switch, resistance R2 and electrolytic capacitor C4.
Mercury switch one end ground connection, another termination resistance R2, another termination input power of resistance R2, institute
The anode for stating electrolytic capacitor C4 connects input power, cathode ground connection, and the points of common connection of the mercury switch and the resistance R2 is
The output end of the mobile induction module 101.
Drive module 102 of alarming includes microcontroller U1, resistance R3, crystal oscillator Y1, capacitor C2 and capacitor C3.
The crystal oscillator Y1 is connected between the end X2 and the end X3 of the microcontroller U1, the capacitor C2 with it is described
Capacitor C3 is series between the end X2 and the end X3 of the microcontroller U1, the points of common connection of the capacitor C2 and the capacitor C3
Ground connection；A termination input power of the resistance R3, the resetting end of another termination microcontroller U1, the microcontroller U1
The end IO5, the end IO2, the end IO3, the end IO1 correspond to the input terminal of the alarm drive module 102, the first output end, second defeated
Outlet and third output end.
LED drive module 103 includes chip T6327A and resistance R1.
The resistance R1 mono- terminates the end SET of the chip T6327A, other end ground connection, the SET of the chip T6327A
End, the end LED and vdd terminal correspond to input, output end and the power end of the LED drive module 103.
Fire-fighting sound light alarming circuit further includes capacitor C1, and the capacitor C1 mono- terminates input power, other end ground connection.
Audio-switch module 104 includes triode Q1, triode Q2, resistance R4 and resistance R5.
The resistance R4 and resistance R5 is series at the collector of the triode Q1 and the current collection of the triode Q2
Between pole, the emitter of the emitter of the triode Q1 and the triode Q2 are grounded, and the base stage of the triode Q1 is
The first input end of the audio-switch module 104, the base stage of the triode Q2 are the second of the audio-switch module 104
Input terminal, the points of common connection of the collector of the triode Q1 and the resistance R4 are the of the audio-switch module 104
The points of common connection of one output end, the collector of the triode Q2 and the resistance R5 are the audio-switch module 104
Second output terminal.
Fire-fighting sound light alarming circuit further includes power switch K1, and power switch K1 mono- terminates positive pole, and another termination is moved
Input terminal, the power end for drive module 102 of alarming and the anode of LED of dynamic induction module 101.
Based on above-mentioned all embodiments, the working principle of fire-fighting sound light alarming circuit is as follows:
Input power is output to resistance R2, then arrives mercury switch, and electrolytic capacitor C4 is used to filter input power.Mercury is opened
It closes and starts to work after receiving input power.In user's moving process, the mercury in mercury switch shakes as user is mobile.
Therefore mercury switch can staggeredly issue high level or low level.The end IO5 of microcontroller U1 receive the high level staggeredly occurred or
When low level, the end IO1, the end IO2, the end IO3 of microcontroller U1 issues low level.Therefore, chip T6327A receives low level
It does not work afterwards, LED is not lighted.Meanwhile when the base stage of triode Q1 and triode Q2 reception low level, triode Q1 and triode
Q2 is turned off.Buzzer does not have electric current process, and buzzer does not beep.
If user stops movement, if stopping the mobile time is 30s, i.e. user continues static in 30s, i.e., mercury switch is held
Continuous 30s issues high level or low level.The IO5 of so microcontroller U1 supports continuous 30s and receives high level or low level.Microcontroller
The end IO1 of device U1 then issues the high level for continuing 2s.The end IO2 and the end IO3 are simultaneously emitted by high level.Therefore, chip T6327A connects
The high level for receiving lasting 2s is triggered, and chip T6327A exports low level to the cathode of LED, and LED is received by chip T6327A
Circuit is connected with electric power generating composition, therefore, LED is lighted.And after the base stage of triode Q1 and triode Q2 receive high level, triode
Q1 and triode Q2 conducting, buzzer forms conducting circuit by triode Q1 and triode Q2 and ground connection, thus buzzer is sent out
Buzzer out.Think that user faces a danger in stop motion 30s, signal an alert, to show the position of user.
If user's stop motion is operation error, power supply K1 is disconnected, then alarm stops.Power switch K1 is re-closed, is disappeared
Anti- sound light alarming circuit is reworked.
Above-mentioned fire-fighting sound light alarming circuit passes through the motion state that mobile induction module 101 incudes user, if user continues
Movement, the low and high level signal that mobile induction module 101 staggeredly issues will not trigger alarm drive module 102, and therefore, LED is not
Can light will not beep with buzzer.It is more than time rating if user's stop motion, mobile induction module 101 is then held
Supervention goes out high level or low level, to trigger alarm drive module 102.Drive module 102 of alarming controls audio-switch module
104 and LED drive module 103 be connected so that LED is lighted, buzzer beeps, i.e., fire fighter's stop motion when think
Fire fighter faces a danger, thus realizes sound and light of alarm.
A kind of fire-fighting combined aural and visual alarm, including above-mentioned fire-fighting sound light alarming circuit, buzzer and LED, the fire-fighting acousto-optic
Warning circuit is separately connected the buzzer and the LED.
LED is red.
Above-mentioned fire-fighting combined aural and visual alarm incudes the motion state of user by fire-fighting sound light alarming circuit, if user persistently transports
Dynamic, LED and buzzer do not work.If user's stop motion is more than time rating, fire-fighting sound light alarming circuit controls LED point
Bright, buzzer beeps, i.e., fire fighter's stop motion when think that fire fighter faces a danger, thus realize sound-light alarm
Function.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (7)
1. a kind of fire-fighting sound light alarming circuit incudes the motion state of user when carrying for user, which is characterized in that packet
Include mobile induction module, alarm drive module, LED drive module and audio-switch module；
The input termination input power of the mobile induction module, the input terminal of the output termination alarm drive module, ground connection
End ground connection；The power supply termination input power of the alarm drive module, the first output terminate the first of the audio-switch module
Input terminal, second output terminal connect the second input terminal of the audio-switch module, third output terminates the LED drive module
Input terminal, ground terminal ground connection；The power supply termination input power of the LED drive module, output terminate cathode, the ground terminal of LED
Ground connection；The anode of the LED connects input power；The first output end and second output terminal of the audio-switch module connect bee respectively
The positive and negative anodes of ring device, the ground terminal ground connection of the audio-switch module；
The mobile induction module staggeredly issues high level and low level signal, the alarm driving during user movement
After module receives staggered low and high level signal, the LED drive module and the audio-switch module, the LED are not driven
Extinguish, the buzzer does not make a sound；
The mobile induction module is in user's stop motion, within time rating, continuously sends out high level or low level signal
When, the first output end and second output terminal of the alarm drive module export high level, the third of the alarm drive module
Output end exports permanent High level, and the LED drive module drives the LED to light when receiving permanent High level；The acoustic control
The first input end of switch module and the second input terminal receive high level, and the buzzer connecting with the audio-switch module issues
Buzzer；
The audio-switch module includes triode Q1, triode Q2, resistance R4 and resistance R5；
The resistance R4 and resistance R5 be series at the triode Q1 collector and the triode Q2 collector it
Between, the emitter of the emitter of the triode Q1 and the triode Q2 are grounded, and the base stage of the triode Q1 is described
The first input end of audio-switch module, the base stage of the triode Q2 are the second input terminal of the audio-switch module, institute
The points of common connection of the collector and the resistance R4 of stating triode Q1 is the first output end of the audio-switch module, described
The points of common connection of the collector of triode Q2 and the resistance R5 are the second output terminal of the audio-switch module.
2. fire-fighting sound light alarming circuit according to claim 1, which is characterized in that the mobile induction module includes mercury
Switch, resistance R2 and electrolytic capacitor C4；
Mercury switch one end ground connection, another termination resistance R2, another termination input power of resistance R2, the electricity
The anode of solution capacitor C4 connects input power, and cathode ground connection, the points of common connection of the mercury switch and the resistance R2 is described
The output end of mobile induction module.
3. fire-fighting sound light alarming circuit according to claim 1, which is characterized in that the alarm drive module includes micro-control
Device U1, resistance R3, crystal oscillator Y1, capacitor C2 and capacitor C3 processed；
The crystal oscillator Y1 is connected between the end X2 and the end X3 of the microcontroller U1, the capacitor C2 and the capacitor
C3 is series between the end X2 and the end X3 of the microcontroller U1, and the points of common connection of the capacitor C2 and the capacitor C3 connect
Ground；A termination input power of the resistance R3, the resetting end of another termination microcontroller U1, the microcontroller U1's
The end IO5, the end IO2, the end IO3, the end IO1 correspond to the input terminal of the alarm drive module, the first output end, second output terminal and
Third output end.
4. fire-fighting sound light alarming circuit according to claim 1, which is characterized in that the LED drive module includes chip
T6327A and resistance R1；
The resistance R1 mono- terminates the end SET of the chip T6327A, and the other end is grounded, the end SET of the chip T6327A,
The end LED and vdd terminal correspond to input, output end and the power end of the LED drive module.
5. fire-fighting sound light alarming circuit according to claim 1, which is characterized in that it further include capacitor C1, the capacitor C1
One termination input power, other end ground connection.
6. a kind of fire-fighting combined aural and visual alarm, which is characterized in that including fire-fighting sound-light alarm described in claim 1-5 any one
Circuit, buzzer and LED, the fire-fighting sound light alarming circuit are separately connected the buzzer and the LED.
7. fire-fighting combined aural and visual alarm according to claim 6, which is characterized in that the LED is red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002148.9A CN104766419B (en) | 2014-01-02 | 2014-01-02 | Fire-fighting sound light alarming circuit and fire-fighting combined aural and visual alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002148.9A CN104766419B (en) | 2014-01-02 | 2014-01-02 | Fire-fighting sound light alarming circuit and fire-fighting combined aural and visual alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104766419A CN104766419A (en) | 2015-07-08 |
| CN104766419B true CN104766419B (en) | 2019-01-15 |
Family
ID=53648219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410002148.9A Active CN104766419B (en) | 2014-01-02 | 2014-01-02 | Fire-fighting sound light alarming circuit and fire-fighting combined aural and visual alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104766419B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106355833A (en) * | 2016-08-09 | 2017-01-25 | 北京长城电子装备有限责任公司 | Comprehensive air pressure alarm device |
| CN106237558A (en) * | 2016-08-09 | 2016-12-21 | 北京长城电子装备有限责任公司 | A kind of air pressure intelligent alarm system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924669Y (en) * | 2006-05-24 | 2007-07-18 | 黄晓慧 | Anti-theft anti-robbing lost-proof, alarm circuit |
| CN202435649U (en) * | 2011-11-24 | 2012-09-12 | 深圳市浩原义光电科技有限公司 | Energy-saving type brightness induction LED lamp |
| CN202761937U (en) * | 2012-09-13 | 2013-03-06 | 温州市恒盛照明电器有限公司 | Electric torch with emergency call function |
| CN202795651U (en) * | 2012-07-25 | 2013-03-13 | 北京东方海龙消防科技有限公司 | Wireless-voice saving alarm |
| CN103298187A (en) * | 2012-02-29 | 2013-09-11 | 海洋王照明科技股份有限公司 | Flashlight control circuit and corresponding flashlight |
-
2014
- 2014-01-02 CN CN201410002148.9A patent/CN104766419B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924669Y (en) * | 2006-05-24 | 2007-07-18 | 黄晓慧 | Anti-theft anti-robbing lost-proof, alarm circuit |
| CN202435649U (en) * | 2011-11-24 | 2012-09-12 | 深圳市浩原义光电科技有限公司 | Energy-saving type brightness induction LED lamp |
| CN103298187A (en) * | 2012-02-29 | 2013-09-11 | 海洋王照明科技股份有限公司 | Flashlight control circuit and corresponding flashlight |
| CN202795651U (en) * | 2012-07-25 | 2013-03-13 | 北京东方海龙消防科技有限公司 | Wireless-voice saving alarm |
| CN202761937U (en) * | 2012-09-13 | 2013-03-06 | 温州市恒盛照明电器有限公司 | Electric torch with emergency call function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104766419A (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104766419B (en) | Fire-fighting sound light alarming circuit and fire-fighting combined aural and visual alarm | |
| CN107726240A (en) | A kind of intelligent lamp with detection indoor harmful gas function | |
| CN203318341U (en) | Automatic glass breaking device and detection circuit of same | |
| CN205140165U (en) | Combustible gas alarm system | |
| CN204965694U (en) | Household fuel gas alarm | |
| CN207115708U (en) | A kind of kitchen fuel gas alarm | |
| CN202339615U (en) | Domestic small-sized coal gas alarm with exhausting function | |
| CN205038732U (en) | Portable alarm with wireless charging device | |
| CN205230255U (en) | Air conditioner with intelligent fireproof alarming function | |
| CN203909970U (en) | Ultraviolet ray flame sensor false triggering prevention device | |
| CN204946229U (en) | A kind of sun power real time monitoring apparatus of audible-visual annunciator | |
| CN205121789U (en) | Detect smoke alarm system | |
| CN203949221U (en) | Gas leakage protector and gas-cooker | |
| CN104654394A (en) | Smoke ventilator having CO monitoring and alarming functions | |
| CN204791443U (en) | Domestic natural gas leakage detects and alarm device | |
| CN207489221U (en) | A kind of fully-automatic intelligent safety device | |
| CN207352752U (en) | Mobile wireless fuel gas real-time detection alarming device is based under a kind of oil and gas environments | |
| CN201886598U (en) | Combustible gas monitoring device | |
| CN104978827A (en) | Combustible gas detection apparatus enabling alarm threshold to be adjustable | |
| CN102930695A (en) | Domestic natural gas alarm | |
| CN205038730U (en) | Terrestrial reference alarm with infrared control function | |
| CN205038766U (en) | Alarm with monitoring flow | |
| CN208124377U (en) | Preventing gas leakage device and gas-cooker | |
| CN103994478A (en) | Gas leakage detection method used for gas cooking appliances | |
| CN202871036U (en) | Household natural gas alarm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |