CN204066312U - Based on the automatic fire alarm system of 51 single-chip microcomputers - Google Patents
Based on the automatic fire alarm system of 51 single-chip microcomputers Download PDFInfo
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- CN204066312U CN204066312U CN201420544425.4U CN201420544425U CN204066312U CN 204066312 U CN204066312 U CN 204066312U CN 201420544425 U CN201420544425 U CN 201420544425U CN 204066312 U CN204066312 U CN 204066312U
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Abstract
The utility model discloses a kind of automatic fire alarm system based on 51 single-chip microcomputers, comprise single-chip microcomputer, smoke transducer, analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator and LED display circuit; Described smoke transducer is connected with analog-to-digital conversion module, and described analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator are connected with single-chip microcomputer respectively with LCD display circuit; Smokescope data for gathering the smokescope of surrounding environment, and are sent to single-chip microcomputer by described smoke transducer after analog to digital conversion; Temperature data for gathering the temperature of surrounding environment, and is sent to single-chip microcomputer by described temperature sensor; Described key circuit is for changing the preset value of fire alarm; Described audible-visual annunciator is used for when smokescope data, temperature data exceed preset value, sends warning; Described LED display circuit is for showing the data of collection.The utility model has certain reliability, intellectuality, stability, convenience, the feature such as cheap, has certain use value.
Description
Technical field
The utility model relates to a kind of warning system, particularly a kind of automatic fire alarm system.
Background technology
From primitive society, human society just understands that use fire is to carry out a series of social activities, and enter civilized society till now, fire also brings very large facility to us too.If but we to fiery improper use or out of control time, fire will bring beyond thought disaster to us.According to data, breaking out of fire every day accident in the whole world just has more than 10,000, so that hundreds of people is died.And the annual breaking out of fire of China just has an appointment 40,000, bring very large injury.
The severe fact tells us fireproof importance, the living condition of people is improved and socioeconomic raising, what around disaster hidden-trouble existed also gets more and more, the factor of fire is caused also to get more and more, if breaking out of fire will cause socioeconomic extreme loss and affect social security, threaten the life security of people, cause being discord and the uneasiness of people's soul of society.The cruel fact tells people to prevent fires and the importance of fire alarm, people recognized real-time monitoring, warning fire important, the more and more consequence that good automatic fire alarm system also plays, it can help people to reduce unnecessary loss.
The change of information age and people study the raising of scientific and technological level, and this has just occurred multiple functional automatic fire alarm system, and can also with interlocking equipment function.The research of China's automatic fire alarm technology and the exploitation of use and system all more late, a lot of technology and rules and regulations system also immature.
Utility model content
The purpose of this utility model is just to provide a kind of automatic fire alarm system based on 51 single-chip microcomputers.
This object of the present utility model is realized by such technical scheme, based on the automatic fire alarm system of 51 single-chip microcomputers, comprise single-chip microcomputer, smoke transducer, analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator and LED display circuit; Described smoke transducer is connected with analog-to-digital conversion module, and described analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator are connected with single-chip microcomputer respectively with LCD display circuit; Smokescope data for gathering the smokescope of surrounding environment, and are sent to single-chip microcomputer by described smoke transducer after analog to digital conversion; Temperature data for gathering the temperature of surrounding environment, and is sent to single-chip microcomputer by described temperature sensor; Described key circuit is for changing the preset value of fire alarm; Described audible-visual annunciator is used for when smokescope data, temperature data exceed preset value, sends warning; Described LED display circuit is for showing the data of collection.
Further, described smoke transducer is MQ-5, described analog-to-digital conversion module is AD0832,1,3,5 pins of described smoke transducer connect power supply, the pin two of described smoke transducer, the indirect slide rheostat of 4, the pin two, 6 of described smoke transducer connects the CH0 end of described analog-to-digital conversion module, pin 4 ground connection of described smoke transducer.
Further, the CS pin of described analog to digital converter connects the P2.7 pin of single-chip microcomputer, and the CLK pin of described analog-to-digital conversion module connects the P2.5 pin of single-chip microcomputer, and D0, D1 pin of analog-to-digital conversion module connects the P2.6 pin of single-chip microcomputer.
Further, described audible-visual annunciator comprises acoustic alarm module and light alarm module, described acoustic alarm module comprises resistance R2, triode Q1 and hummer, one end of described resistance R2 connects the P2.0 pin of single-chip microcomputer, the base stage of another termination triode Q1 of resistance R2, the emitter of triode Q1 connects power supply, and the collector of triode is through hummer ground connection; Described smooth alarm module comprises resistance R4 and light emitting diode D2, and in succession, the other end of resistance is connected with the negative electrode of light emitting diode D2, and the anode of light emitting diode D2 is connected with power supply for one end of described resistance R4 and the P2.1 pin of single-chip microcomputer.
Further, described fire alarm system also comprises GSM message module, for warning message is sent to user.
Owing to have employed technique scheme, the utility model has following advantage:
The utility model adopts single-chip microcomputer to be the control module of core, the peripheral circuit of single-chip microcomputer connects the detection that different sensors carries out fire, if breaking out of fire, automatic fire alarm system will send sound and light alarm, and send note to user by Single-chip Controlling gsm module.The utility model has certain reliability, intellectuality, stability, convenience, the feature such as cheap, has certain use value.
Accompanying drawing explanation
Accompanying drawing of the present utility model is described as follows.
Fig. 1 is the structure principle chart of automatic fire alarm system;
Fig. 2 is the circuit connection diagram of single-chip minimum system;
Fig. 3 is the connection layout of smoke transducer;
Fig. 4 is temperature detecting module connection layout;
Fig. 5 is warning hardware circuit diagram;
Fig. 6 is the connection layout of TC35i module;
Fig. 7 TC35i module and single-chip microcomputer connection layout;
Fig. 8 is LED display circuit figure;
Fig. 9 is key circuit connection layout.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, based on the automatic fire alarm system of 51 single-chip microcomputers, comprise single-chip microcomputer, smoke transducer, analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator and LED display circuit; Described smoke transducer is connected with analog-to-digital conversion module, and described analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator are connected with single-chip microcomputer respectively with LCD display circuit; Smokescope data for gathering the smokescope of surrounding environment, and are sent to single-chip microcomputer by described smoke transducer after analog to digital conversion; Temperature data for gathering the temperature of surrounding environment, and is sent to single-chip microcomputer by described temperature sensor; Described key circuit is for changing the preset value of fire alarm; Described audible-visual annunciator is used for when smokescope data, temperature data exceed preset value, sends warning; Described LED display circuit is for showing the data of collection.
When the sensor in system is tested with fire signal, if the condition of a fire sampled value detected with compare by the upper limit preset value of key assignments, if exceed upper limit preset value, after single-chip microcomputer analyzing and processing, send sound and light alarm.Also have LCD to show the gas concentration value of prevailing circumstances and the value of fire alarm temperature and their upper limit preset value, gsm module sends note and informs breaking out of fire to user.So just can call rapidly and put out a fire to fire brigade organization.
Fig. 2 is singlechip minimum system circuit connection layout.
AT89C51 single-chip microcomputer has 40 pins, and wherein it has two storeies to be number storage and program storage, and the access mode of these two storeies is also have inside and outside dividing.The functional part of AT89C51, is by serial communication interface and other device set on a single die, forms a simple microcomputer, namely a microcontroller.Singlechip minimum system circuit is the base unit that native system carries out work, is the basis carrying out controlling native system and other peripheral circuits.Comprising single-chip microcomputer, crystal oscillating circuit (clock circuit), reset circuit three parts, single-chip microcomputer is the core of control circuit.Crystal oscillating circuit is made up of crystal oscillator Y1, electric capacity CY1 and electric capacity CY2, and reset circuit holds CR1, button S1 and resistance R3 by resistance and forms.
As shown in Figure 3, described smoke transducer is MQ-5, described analog-to-digital conversion module is AD0832,1,3,5 pins of described smoke transducer connect power supply, the pin two of described smoke transducer, the indirect slide rheostat of 4, the pin two, 6 of described smoke transducer connects the CH0 end of described analog-to-digital conversion module, pin 4 ground connection of described smoke transducer.
MQ-5 sensor belongs to resistor-type semiconductor gas sensor, this sensor has stronger sensitivity to methane, and have wider sensitive range to inflammable gas, fast response time, good stability, measures simple to operate, cheap, optionally can detect the pure gas of certain special properties, and other gases coexisted are not responded.When smoke transducer runs into smog, gas, it will change its original normal condition, and at this moment the resistance value of smoke transducer can decline.Normal condition will be become again when it does not detect smog, gas.
Inflammable gas contact semiconductor surface can be adsorbed, because the negative ion of semiconductor absorption is released, this time, inflammable gas was with positive ion mode to device ejected electron, formed positive ion absorption.At this moment the electron density of semiconductor can increase, and the resistance of device can decline.Because the oxygen level in air is 21%, adsorbance when therefore gas is oxidized is also constant, and device resistance is also just relatively fixing.Volume fraction (concentration) as inflammable gas changes, and its resistance also will change.This just can learn the volume fraction (concentration) of absorption inflammable gas from the change of device resistance.When normal operation of sensor, according to voltage divider principle, sensor and slide rheostat dividing potential drop, at this moment there is less magnitude of voltage at the two ends of slide rheostat, namely ensure that sensor can detect fire alarm at any time, when being had gas and smog by test side detection, at this moment the resistance of slide rheostat can change, detect the simulating signal produced, and give AD converter by 6 ports and convert digital signal to, give single-chip microcomputer afterwards and carrying out analyzing and processing.
Fig. 4 is temperature detecting module connection layout, in the present embodiment, adopt device DS18B20 as the detection of temperature, what adopt due to this temperature sensor is monobus lin protocol, does not just need just can be directly connected to single-chip microcomputer through A/D converter conversion and controls.Wherein DQ is data I/O, is high level under normality.If the temperature value that single-chip microcomputer receives is greater than the upper limit preset value of system temperature, then can carries out sound and light alarm and warning reminding information is sent to user.If the temperature value that single-chip microcomputer receives is not more than the upper limit preset value of system, then there is not sound and light alarm and warning reminding information.The temperature value detected is shown by LCD1602.
The I/O port (i.e. port 2) of DS18B20 is connected to the P1.3 of single-chip microcomputer, and port one links earth terminal, and port 3 links power end.Temperature sensor temperature-measurement principle, exactly temperature transition become 16 have symbol scale-of-two, and store on a memory.By I/O, data are forwarded to single-chip microcomputer again, single-chip microcomputer is by the bound temperature value write register of software programming.The temperature value detected and preset upper limit value just can compare by this.According to upper surface analysis, when DS18B20 detects fire alarm, temperature detecting module just carries out work.Otherwise quit work.When digital temperature sensor reads the analyzing and processing of dut temperature value through Single Chip Microcomputer (SCM) program.Single-chip microcomputer just compares its dut temperature value and upper limit preset value, just reports to the police, otherwise do not report to the police if be greater than upper limit preset value.The drive current strengthening temperature sensor is mainly used in for resistance R5, compensate for the deficiency of the driving function of single-chip processor i/o.
As shown in Figure 5, described audible-visual annunciator comprises acoustic alarm module and light alarm module, described acoustic alarm module comprises resistance R2, triode Q1 and hummer, one end of described resistance R2 connects the P2.0 pin of single-chip microcomputer, the base stage of another termination triode Q1 of resistance R2, the emitter of triode Q1 connects power supply, and the collector of triode is through hummer ground connection; Described smooth alarm module comprises resistance R4 and light emitting diode D2, and in succession, the other end of resistance is connected with the negative electrode of light emitting diode D2, and the anode of light emitting diode D2 is connected with power supply for one end of described resistance R4 and the P2.1 pin of single-chip microcomputer.
The specific works process of audible-visual annunciator is: when the system is normal, and single-chip microcomputer is bright by control circui D1 lamp; When Smoke Detection value and temperature detection value reach upper limit preset value, D2 lamp glimmers.Triode Q1 plays on-off action, when P2.0 is high level, and triode Q1 conducting, then hummer can be sounded a buzzer; When P2.0 is low level, triode Q1 closes, then hummer will stop buzzer
As to further improvement of this embodiment, described fire alarm system also comprises GSM message module, for warning message is sent to user.
Fig. 6 is the connection layout of TC35i module; Fig. 7 TC35i module and single-chip microcomputer connection layout.
TC35i module has 40 pins, and its pin is extracted by a ZIF connector.In the present embodiment, realize the transmission of note for controlling gsm module, its method writes by single-chip microcomputer the transmission that AT steering order realizes GSM alarming short message.Two I/O mouths (i.e. P3.0 and P3.1) of single-chip microcomputer are linked TC35i module and realize GSM message sending function, and wherein AT instruction is gsm module control command, and by production communication, producer has woven.When the LED(in TC35i module is yellow) extinguish, illustrate that TC35i is in closed condition; If LED(is yellow) bright 600ms/ goes out 600ms, illustrates that SIM card is not inserted into TC35i module; If LED(is yellow) bright 750ms/ goes out 3s, illustrates that TC35i is in holding state.
Fig. 8 is LED display circuit figure, adopt liquid crystal 1602 to the size of the concentration and temperature that show smog in the present embodiment, can the smog of real time monitoring to prevailing circumstances and the security situation of temperature, the safety coefficient of system can be grasped in advance and carry out the generation of emergency plan fire preventing in advance.P0 mouth in the present embodiment is used as universaling I/O port, and inside does not have pull-up resistor, opens leakage, and no matter it drives much, does not all have power supply, just must have power drives when it will drive LCD to show, otherwise not bright, so need external power supply.Connect the effect that resistance plays current limliting.P0 mouth is that input first will put 1, because pull-up field effect transistor is ended always, as declined 1, drop-down field effect transistor conducting, can read 0 for eternal like this.When writing 1, drop-down field effect transistor cut-off, just correctly can read in data.
The present embodiment adopts button for changing the preset value of fire alarm, can ensure safety to greatest extent.Fire alarm preset value can be changed according to the situation of change of the different index request of system and environment.Button S2 in Fig. 9 is for arranging key, and S3 is the increasing key of alarm parameters preset value.S4 is the reduction key of alarm parameters preset value.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. based on the automatic fire alarm system of 51 single-chip microcomputers, it is characterized in that: comprise single-chip microcomputer, smoke transducer, analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator and LED display circuit; Described smoke transducer is connected with analog-to-digital conversion module, and described analog-to-digital conversion module, temperature sensor, key circuit, audible-visual annunciator are connected with single-chip microcomputer respectively with LCD display circuit; Smokescope data for gathering the smokescope of surrounding environment, and are sent to single-chip microcomputer by described smoke transducer after analog to digital conversion; Temperature data for gathering the temperature of surrounding environment, and is sent to single-chip microcomputer by described temperature sensor; Described key circuit is for changing the preset value of fire alarm; Described audible-visual annunciator is used for when smokescope data, temperature data exceed preset value, sends warning; Described LED display circuit is for showing the data of collection.
2. the automatic fire alarm system based on 51 single-chip microcomputers according to claim 1, it is characterized in that: described smoke transducer is MQ-5, described analog-to-digital conversion module is AD0832,1,3,5 pins of described smoke transducer connect power supply, the pin two of described smoke transducer, the indirect slide rheostat of 4, the pin two, 6 of described smoke transducer connects the CH0 end of described analog-to-digital conversion module, pin 4 ground connection of described smoke transducer.
3. the automatic fire alarm system based on 51 single-chip microcomputers according to claim 2, it is characterized in that: the CS pin of described analog to digital converter connects the P2.7 pin of single-chip microcomputer, the CLK pin of described analog-to-digital conversion module connects the P2.5 pin of single-chip microcomputer, and D0, D1 pin of analog-to-digital conversion module connects the P2.6 pin of single-chip microcomputer.
4. the automatic fire alarm system based on 51 single-chip microcomputers according to claim 1, it is characterized in that: described audible-visual annunciator comprises acoustic alarm module and light alarm module, described acoustic alarm module comprises resistance R2, triode Q1 and hummer, one end of described resistance R2 connects the P2.0 pin of single-chip microcomputer, the base stage of another termination triode Q1 of resistance R2, the emitter of triode Q1 connects power supply, and the collector of triode is through hummer ground connection; Described smooth alarm module comprises resistance R4 and light emitting diode D2, and in succession, the other end of resistance is connected with the negative electrode of light emitting diode D2, and the anode of light emitting diode D2 is connected with power supply for one end of described resistance R4 and the P2.1 pin of single-chip microcomputer.
5. the automatic fire alarm system based on 51 single-chip microcomputers according to claim 1, is characterized in that: also comprise GSM message module, for warning message is sent to user.
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| CN201420544425.4U CN204066312U (en) | 2014-09-22 | 2014-09-22 | Based on the automatic fire alarm system of 51 single-chip microcomputers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200601A (en) * | 2014-09-22 | 2014-12-10 | 西北民族大学 | Automatic fire alarm system based on 51 single-chip processor |
| CN104916065A (en) * | 2015-06-25 | 2015-09-16 | 苏州工业职业技术学院 | Intelligent fire alarm device and control method thereof |
| CN107818656A (en) * | 2017-08-13 | 2018-03-20 | 上海万生合金材料有限公司 | A kind of intelligent detecting early-warning device |
| CN108536075A (en) * | 2018-06-15 | 2018-09-14 | 苏州工业职业技术学院 | Biped robot's intelligence patrol and monitor system |
| CN108694799A (en) * | 2018-07-06 | 2018-10-23 | 无锡众创未来科技应用有限公司 | Fire behavior alarm |
| CN109816916A (en) * | 2019-03-20 | 2019-05-28 | 武汉恒安数联电子科技有限公司 | Fire display panel circuit |
-
2014
- 2014-09-22 CN CN201420544425.4U patent/CN204066312U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200601A (en) * | 2014-09-22 | 2014-12-10 | 西北民族大学 | Automatic fire alarm system based on 51 single-chip processor |
| CN104916065A (en) * | 2015-06-25 | 2015-09-16 | 苏州工业职业技术学院 | Intelligent fire alarm device and control method thereof |
| CN107818656A (en) * | 2017-08-13 | 2018-03-20 | 上海万生合金材料有限公司 | A kind of intelligent detecting early-warning device |
| CN108536075A (en) * | 2018-06-15 | 2018-09-14 | 苏州工业职业技术学院 | Biped robot's intelligence patrol and monitor system |
| CN108694799A (en) * | 2018-07-06 | 2018-10-23 | 无锡众创未来科技应用有限公司 | Fire behavior alarm |
| CN109816916A (en) * | 2019-03-20 | 2019-05-28 | 武汉恒安数联电子科技有限公司 | Fire display panel circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150922 |
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| EXPY | Termination of patent right or utility model |