CN205563913U - Hierarchical alarm is surveyed to smog - Google Patents
Hierarchical alarm is surveyed to smog Download PDFInfo
- Publication number
- CN205563913U CN205563913U CN201620312486.7U CN201620312486U CN205563913U CN 205563913 U CN205563913 U CN 205563913U CN 201620312486 U CN201620312486 U CN 201620312486U CN 205563913 U CN205563913 U CN 205563913U
- Authority
- CN
- China
- Prior art keywords
- detection circuit
- circuit
- smoke
- smog
- reference voltage
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
Abstract
The utility model provides a pair of hierarchical alarm is surveyed to smog, including smog detection circuit, reference voltage detection circuit, voltage follower, operational amplifier circuit, comparison circuit and singlechip display module, smog detection circuit and reference voltage detection circuit parallel connection to at smog detection circuit and reference voltage detection circuit's voltage follower conduct of output series connection and the buffer stage between operational amplifier circuit, smog detection circuit and reference voltage detection circuit all include an independent smoke transducer respectively, and smog detection circuit's smoke transducer exposes in the air, and reference voltage detection circuit's smoke transducer is isolated with the air, smog detection circuit and reference voltage detection circuit's output process voltage follower delivers to operational amplifier circuit, delivers to comparison circuit again, exports the comparative result processing of singlechip display module and show smog size grade on the display screen. Can detect very little smog to just can send out the police dispatch newspaper when the conflagration is initial.
Description
Technical field
This utility model relates to a kind of high sensitivity smoke detection classifying alarm device, belongs to electronic circuit technology field.
Background technology
In contemporary society, the application of fire-alarm is more and more universal, almost can see its figure in all of building, but, current most of fire-alarms all send identical warning regardless of the size of the condition of a fire, it is impossible to enough providing different alarm level according to practical situation, this is unfavorable for that rescue personnel obtains condition of a fire message early, carrying fire distinguisher targetedly, this will increase the risk of fire spreading.It is therefore desirable to design a kind of can be according to the fire-alarm sending different brackets alarm in various degree of the condition of a fire.
Utility model content
Purpose: in order to overcome the deficiencies in the prior art, this utility model provides a kind of smoke detection classifying alarm device, has high sensitivity, it is possible to the change of the least output voltage detected such that it is able to the faintest smog detected.It addition, this utility model can show different grades according to the size of smokescope, user is facilitated to select appropriate processing mode.
Technical scheme: for solving above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of smoke detection classifying alarm device, it is characterised in that: include smoke detection circuit, reference voltage detection circuit, voltage follower, the independently-powered circuit of 5V, operational amplification circuit, comparison circuit and single-chip microcomputer display module；Described smoke detection circuit is connected in parallel with reference voltage detection circuit, and outfan at smoke detection circuit with reference voltage detection circuit connects a voltage follower as the buffer stage between operational amplification circuit respectively, smoke detection circuit and reference voltage detection circuit all include an independent Smoke Sensor, wherein, the Smoke Sensor of smoke detection circuit exposes in atmosphere, the Smoke Sensor of reference voltage detection circuit and air exclusion；The output of smoke detection circuit and reference voltage detection circuit delivers to operational amplification circuit through voltage follower, then delivers to comparison circuit, and comparative result is exported single-chip microcomputer display module and processes and show smog order of magnitude on a display screen by comparison circuit again.
Preferably, described smoke detection classifying alarm device, it is characterised in that: described Smoke Sensor is MQ-2 smog gas sensor, supply voltage is 5V, is output as 0.1-0.2V, when smog being detected time static, output voltage increases, and smokescope is the highest, and output voltage is the biggest.
Preferably, described smoke detection classifying alarm device, it is characterised in that: described voltage follower uses LM358 integrated transporting discharging, uses 5V single supply to power.
Preferably, described smoke detection classifying alarm device, it is characterised in that: described operational amplification circuit uses LM358 integrated transporting discharging, and LM358 integrated transporting discharging two input connects the divider resistance of 1K respectively, in-phase end is again by the indirect 10K feedback resistance of 10K resistance eutral grounding, end of oppisite phase and outfan.
Preferably, described smoke detection classifying alarm device, it is characterized in that: in described comparison circuit, five isoelectric level resistance series connections are to both ends of power, a current potential is had between each two isoelectric level resistance, define four equal difference current potentials altogether, the end of oppisite phase of four comparators is connected between these five resistance the most respectively, the benchmark voltage of four comparators is respectively 1V, 2V, 3V, 4V, four comparators produce four outputs and are sequentially inputted to the different port of single-chip microcomputer, and the outfan of four comparators connects pull-up resistor respectively.
Preferably, described smoke detection classifying alarm device, it is characterised in that: described comparator is LM393 integrated comparator.
Preferably, described smoke detection classifying alarm device, it is characterized in that: described single-chip microcomputer display module can be according to the different value of four input signals, display screen is driven to show different level of smoke, level of smoke Pyatyi altogether, is followed successively by safety, level Four warning, three grades of alarms, second-level alarm, primary alarm from small to large by smokescope.
Beneficial effect: the smoke detection classifying alarm device that this utility model provides, uses MQ-2 smog gas sensor to make smoke detection circuit and reference voltage detection circuit.The voltage signal of smoke detection circuit and reference voltage detection circuit is each after voltage follower, an output voltage signal is can be obtained by again after operational amplification circuit, the comparison end of this voltage signal input comparison circuit is compared with reference voltage, and produce output signal, output signal is input to single-chip microcomputer and processes the most at last, and single-chip microcomputer display module will show different alarm level according to the difference of input signal；There is high sensitivity, it is possible to the change of the least output voltage detected such that it is able to the faintest smog detected, it is possible to just can send alarm when fire is initial.It addition, this utility model can show different grades according to the size of smokescope, monitoring personnel are facilitated to make suitably reaction according to level of smoke.
Accompanying drawing explanation
Fig. 1 is integrated circuit figure of the present utility model；
In figure, 1 is smoke detection circuit, and 2 and 6 is voltage follower, and 3 is the independently-powered circuit of 5V, and 4 is operational amplification circuit, voltage detection circuit on the basis of 5, and 7 is comparison circuit, and 8 is single-chip microcomputer display module；
Fig. 2 is voltage follower circuit figure；
Fig. 3 is operational amplification circuit figure；In figure, R1 is inverting input divider resistance, and R2 is in-phase input end divider resistance, and R3 is feedback resistance, and R4 is earth resistance；
Fig. 4 is comparison circuit circuit diagram；In figure, R5, R6, R7, R8, R9 are isoelectric level resistance, and R10, R11, R12, R13 are pull-up resistor.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.
As it is shown in figure 1, a kind of smoke detection classifying alarm device, including smoke detection circuit 1, reference voltage detection circuit 5, voltage follower 2,6, the independently-powered circuit of 5V 3, operational amplification circuit 4, comparison circuit 7 and single-chip microcomputer display module 8；Described smoke detection circuit 1 is connected in parallel with reference voltage detection circuit 5, and outfan at smoke detection circuit 1 with reference voltage detection circuit 5 connects a voltage follower as the buffer stage between operational amplification circuit respectively, smoke detection circuit 1 and reference voltage detection circuit 5 all include an independent Smoke Sensor, wherein, the Smoke Sensor of smoke detection circuit exposes in atmosphere, the Smoke Sensor of reference voltage detection circuit and air exclusion；The output of smoke detection circuit 1 and reference voltage detection circuit 5 delivers to operational amplification circuit 4 through voltage follower 2,6, delivering to comparison circuit 7 again, comparative result is exported single-chip microcomputer display module 8 and processes and show smog order of magnitude on a display screen by comparison circuit 7 again.
Smoke detection circuit 1 is connected in parallel with reference voltage detection circuit 5, and a voltage follower of connecting after circuit respectively is as the buffer stage between operational amplification circuit, the probe of two of which detection circuit all be MQ-2 smog gas sensor, owing to the sensitivity of MQ-2 smog gas sensor is the highest, therefore this alarm can detect the least smog.The output signal of two detection circuits is after operational amplification circuit, and its voltage difference will be exaggerated 10 times.Again comparison circuit is connected in series to after operational amplification circuit, the voltage signal being input to comparison circuit will be compared respectively at four reference voltages by four comparators, difference according to comparative result, comparison circuit will export different signals, and the output signal of last four comparators will be input in single-chip microcomputer process and show corresponding alarm level.In actually used, being exposed in atmosphere by smoke detection circuit probe, reference voltage detection circuit probe and air exclusion, whole circuit is fixed on the building such as ceiling in warehouse.If without fire, the output voltage of two detection circuits is identical, then the output signal of four comparators in comparison circuit is 0000 from top to bottom, " safe " it is shown as on screen, if there is the condition of a fire, along with the increase of the condition of a fire, output signal will become 0001,0011,0111,1111 successively, the display screen last time is shown as " class4 ", " class3 ", " class2 ", " class1 ".So, the signal being input to single-chip microcomputer by circuit is different, and alarm the most enough can send the warning of different stage.Intensity of a fire size can be made preliminary judgement by the alarm level shown by display screen of Micro Controller Unit (MCU) driving by management personnel, thus can make corresponding reaction.
As in figure 2 it is shown, be voltage follower 2,6, close LM358 integrated transporting discharging including 5V voltage source.The outfan of LM358 turns on its inverting input wire, constitutes the feedback circuit that feedback resistance is almost nil, and uses 5V voltage fed, and its voltage gain is essentially 1, and low frequency characteristic is good.
As shown in Figure 3, for operational amplification circuit 4, the integrated utilization of LM358 is by 5V voltage fed, the divider resistance of 1K is all accessed at two input, to reduce the voltage being input to amplifier, and at its in-phase input end the earth resistance of linking 10K, between its outfan and inverting input, access the feedback resistance of 10K.The voltage difference of input can be amplified 10 times by this circuit.
As shown in Figure 4, for comparison circuit 7, by 5V voltage fed, and at the resistance of 5 1K of voltage source two ends series connection so that be isobaric on each resistance.All accessing the inverting input of a LM393 integrated comparator between each two resistance, the voltage between each access point and earth terminal is by the reference voltage as each comparator, and its reference voltage is followed successively by 1V, 2V, 3V and 4V from left to right.In-phase input end is together in series with the outfan of operational amplification circuit.Outfan at each LM393 integrated transporting discharging accesses the pull-up resistor of 3K, and pull-up resistor connects 5V voltage source.
The above is only preferred implementation of the present utility model; it is noted that, for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (7)
1. a smoke detection classifying alarm device, it is characterised in that: include smoke detection circuit, reference voltage detection circuit, voltage follower, operational amplification circuit, comparison circuit and single-chip microcomputer display module；Described smoke detection circuit is connected in parallel with reference voltage detection circuit, and outfan at smoke detection circuit with reference voltage detection circuit connects a voltage follower as the buffer stage between operational amplification circuit respectively, smoke detection circuit and reference voltage detection circuit all include an independent Smoke Sensor, wherein, the Smoke Sensor of smoke detection circuit exposes in atmosphere, the Smoke Sensor of reference voltage detection circuit and air exclusion；The output of smoke detection circuit and reference voltage detection circuit delivers to operational amplification circuit through voltage follower, then delivers to comparison circuit, and comparative result is exported single-chip microcomputer display module and processes and show smog order of magnitude on a display screen by comparison circuit again.
Smoke detection classifying alarm device the most according to claim 1, it is characterised in that: described Smoke Sensor is MQ-2 smog gas sensor, and supply voltage is 5V, being output as 0.1-0.2V time static, when smog being detected, output voltage increases, smokescope is the highest, and output voltage is the biggest.
Smoke detection classifying alarm device the most according to claim 1, it is characterised in that: described voltage follower uses LM358 integrated transporting discharging, uses 5V single supply to power.
Smoke detection classifying alarm device the most according to claim 1, it is characterized in that: described operational amplification circuit uses LM358 integrated transporting discharging, LM358 integrated transporting discharging two input connects the divider resistance of 1K respectively, in-phase end is again by the indirect 10K feedback resistance of 10K resistance eutral grounding, end of oppisite phase and outfan.
Smoke detection classifying alarm device the most according to claim 1, it is characterized in that: in described comparison circuit, five isoelectric level resistance series connections are to both ends of power, a current potential is had between each two isoelectric level resistance, define four equal difference current potentials altogether, the end of oppisite phase of four comparators is connected between these five resistance the most respectively, the benchmark voltage of four comparators is respectively 1V, 2V, 3V, 4V, four comparators produce four outputs and are sequentially inputted to the different port of single-chip microcomputer, and the outfan of four comparators connects pull-up resistor respectively.
Smoke detection classifying alarm device the most according to claim 5, it is characterised in that: described comparator is LM393 integrated comparator.
7. according to the smoke detection classifying alarm device described in any one of claim 1-6, it is characterized in that: described single-chip microcomputer display module can be according to the different value of four input signals, display screen is driven to show different level of smoke, level of smoke Pyatyi altogether, is followed successively by safety, level Four warning, three grades of alarms, second-level alarm, primary alarm from small to large by smokescope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620312486.7U CN205563913U (en) | 2016-04-14 | 2016-04-14 | Hierarchical alarm is surveyed to smog |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620312486.7U CN205563913U (en) | 2016-04-14 | 2016-04-14 | Hierarchical alarm is surveyed to smog |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205563913U true CN205563913U (en) | 2016-09-07 |
Family
ID=56811039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620312486.7U Expired - Fee Related CN205563913U (en) | 2016-04-14 | 2016-04-14 | Hierarchical alarm is surveyed to smog |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205563913U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950476A (en) * | 2017-03-31 | 2017-07-14 | 北京腾锐视讯科技有限公司 | A kind of fault electric arc detection sensor of some face installation parallel with detected wire |
| CN107966527A (en) * | 2017-11-15 | 2018-04-27 | 卧龙电气集团股份有限公司 | A kind of air quality sensor for air circulation system |
| CN110276926A (en) * | 2018-03-16 | 2019-09-24 | 许耿祯 | Detect the incipient fire early warning system of Airborne particulate value |
| CN112999554A (en) * | 2021-04-12 | 2021-06-22 | 北京安普路安全技术有限公司 | Kitchen automatic fire extinguishing dynamic simulation platform |
| CN115376263A (en) * | 2022-08-15 | 2022-11-22 | 芯翼信息科技(上海)有限公司 | Smoke sensor based on high-precision comparator and smoke detection equipment |
| CN115394028A (en) * | 2022-08-25 | 2022-11-25 | 成都数之联科技股份有限公司 | Fire point monitoring system, method, device and medium |
-
2016
- 2016-04-14 CN CN201620312486.7U patent/CN205563913U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950476A (en) * | 2017-03-31 | 2017-07-14 | 北京腾锐视讯科技有限公司 | A kind of fault electric arc detection sensor of some face installation parallel with detected wire |
| CN107966527A (en) * | 2017-11-15 | 2018-04-27 | 卧龙电气集团股份有限公司 | A kind of air quality sensor for air circulation system |
| CN110276926A (en) * | 2018-03-16 | 2019-09-24 | 许耿祯 | Detect the incipient fire early warning system of Airborne particulate value |
| CN112999554A (en) * | 2021-04-12 | 2021-06-22 | 北京安普路安全技术有限公司 | Kitchen automatic fire extinguishing dynamic simulation platform |
| CN115376263A (en) * | 2022-08-15 | 2022-11-22 | 芯翼信息科技(上海)有限公司 | Smoke sensor based on high-precision comparator and smoke detection equipment |
| CN115376263B (en) * | 2022-08-15 | 2024-03-29 | 芯翼信息科技(上海)有限公司 | Smoke sensor and smoke detection equipment based on high-precision comparator |
| CN115394028A (en) * | 2022-08-25 | 2022-11-25 | 成都数之联科技股份有限公司 | Fire point monitoring system, method, device and medium |
| CN115394028B (en) * | 2022-08-25 | 2023-11-03 | 成都数之联科技股份有限公司 | Fire point monitoring system, method and device and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205563913U (en) | Hierarchical alarm is surveyed to smog | |
| CN101957618A (en) | Intelligent home control system | |
| CN105823922A (en) | AC charged induction device | |
| CN203690948U (en) | Intelligent mine lamp charging cabinet with infrared detection device | |
| CN108538018A (en) | A kind of intelligent security guard early warning system | |
| CN104318720A (en) | STC89C52-based smoke and gas alarm system | |
| CN208061386U (en) | A kind of cigarette sense detecting and warning system | |
| CN106325178A (en) | Security management system based on intelligent communication network | |
| CN204576783U (en) | Based on the radio transmitting device of X-bee | |
| CN105336082A (en) | Intelligent monitoring device for residential fire | |
| CN204856796U (en) | Electric fire monitored control system based on thing networking | |
| CN204926384U (en) | Long -range monitoring and forewarning system of forest fire based on thing networking | |
| CN201876448U (en) | Toxic gas detector for chemical laboratory | |
| CN204461481U (en) | A kind of IT-room environment monitoring system | |
| CN207233145U (en) | A kind of new fire smoke alarm | |
| CN204679886U (en) | Room intelligent monitoring system | |
| CN210402636U (en) | Household wireless alarm equipment | |
| CN203149689U (en) | Intelligent population flow detection door | |
| CN202442989U (en) | Anaerobic alarm | |
| CN201945872U (en) | Intelligent security monitoring system for rooms | |
| CN202795676U (en) | Gas alarm | |
| CN206519951U (en) | A kind of novel household robot | |
| CN207601993U (en) | A kind of Multifunctional environment monitoring device based on smoke alarm | |
| CN203165130U (en) | Novel bank safety alarm with infrared monitoring and triode output control | |
| CN208027529U (en) | Multipoint mode fire detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20190414 |