CN202454028U - Fire early warning system - Google Patents
Fire early warning system Download PDFInfo
- Publication number
- CN202454028U CN202454028U CN2011205325923U CN201120532592U CN202454028U CN 202454028 U CN202454028 U CN 202454028U CN 2011205325923 U CN2011205325923 U CN 2011205325923U CN 201120532592 U CN201120532592 U CN 201120532592U CN 202454028 U CN202454028 U CN 202454028U
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- chip
- wireless signal
- warning system
- 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
Images
Abstract
The utility model relates to a fire early warning system which comprises a detection unit for detecting a smog signal and a monitoring terminal, wherein the detection unit comprises a photoelectric smog detector, a signal processing module, a smog wireless signal transmitting module and a power supply; the detection unit also comprises a wireless signal receiving module and a display output module; and the smog wireless signal transmitting module and the wireless signal receiving module are provided with the same address codes and are wirelessly connected. According to the fire early warning system disclosed by the utility model, the smog signal is converted into a photoelectric signal by the photoelectric smog detector and is processed by the signal processing module; and the processed smog signal is transmitted to the wireless signal receiving module through the smog wireless signal transmitting module for processing and then is transmitted to the display output module. The fire early warning system is also provided with a false alarm circuit module, so that a manager can grasp the condition of the filed more accurately. According to the fire early warning system disclosed by the utility model, wireless transmission of a signal at the initial stage of the fire is achieved; and the realization mode of the fire early warning system is simple, effective and stable.
Description
Technical field
The utility model relates to a kind of fire early-warning system, especially relates to a kind of fire early-warning system that is applicable to the students' dormitory
Background technology
In recent years; Use high-power electric appliance, smoking perhaps to use electrical equipment such as computer fan because of the student is violating the regulations in dormitory; Equipment operation is undesired and fire failure that cause emerges in an endless stream; Because the density of population is big in the dormitory, the zone of action is narrow and small, the loss that fire very easily causes the impaired even casualties of student's property etc. to retrieve.
Fire alarm of the prior art, prior-warning device; Comprise the reflective infrared beam smoke detector of line style, air suction type utmost point incipient fire intelligent early-warning system, distribution type fiber-optic temperature-sensing fire detecting system, fire probe system with optical fiber and grating sensing temperature, reusable formula linetype temperature-fixing fire detecting device, VSD image-type early-stage smog fire detecting system, image-type flame fire detecting system or the like; All to take into account face too big or operating position is too extreme (like forest fire protection etc.) and too loaded down with trivial details owing to it for these warnings, early warning system, is not suitable for being used as the fire prevention early warning system in the students' dormitory.
At present, be badly in need of design a kind of with the dormitory environmental facies adapt to fire early-warning system, make the student eliminate disaster hidden-trouble surely, thereby effectively stop the generation of fire with higher efficient in the shortest time.
The utility model content
In order to solve the defective that fire early-warning system of the prior art is not suitable for the students' dormitory actual environment, the utility model provides a kind of fire early-warning system.
The technical scheme that the utility model adopts is following:
A kind of fire early-warning system comprises the probe unit, monitor terminal and the wrong report circuit module that detect smoke signal, and probe unit comprises photoelectric smoke detector 1, signal processing module, alarm, smog wireless signal transmitting module and power supply 4.
Monitor terminal comprises wireless signal receiver module, signal identification module and shows output module.
The smog wireless signal transmitting module is provided with identical geocoding with the wireless signal receiver module, is used for wireless connections between two modules.
Circuit wrong report module is provided with identical geocoding with the wireless signal module, is used for wireless connections between two modules.
The false positive signal transmitter module sends wireless false positive signal, and the wireless signal receiver module receives false positive signal, and to showing output after the false positive signal operation or reporting to the police.
The wrong report circuit module comprises wrong report wireless signal transmission unit, resistance 8, microswitch I6 and power supply 4; Wrong report wireless signal transmission unit is a PT2262 chip 10; Resistance 8 two ends connect signal emission port and the FireWire port port on the PT2262 chip 10 respectively; The geocoding of the receiver port on the pin of signal emission port and the wireless signal receiver module is identical, and microswitch I6 and resistance 8 are connected in series.
The principle of work of wrong report circuit module is: in dormitory, because non-fire hazard aerosol fog sources such as water vapor, dry weather dust are too many, smoking cause alarm equipment alarm, perhaps little accident takes place in dormitory; Cause occurring smog, but the situation that the dormitory personnel eliminate control of fire soon, the dormitory personnel press microswitch II9 rapidly voluntarily when this thing happens; PT2262 chip 10 sends false positive signal; Pass to monitoring terminal, prompting supervision personnel situation occurs but get rid of.
The wireless signal receiver module is a PT2272-L4 chip 3; The signal identification module is a 74LS04 chip 5; Two data output ports on the said PT2272-L4 chip 3 respectively with 74LS04 chip 5 on arbitrary phase inverter input port be connected; And data-out port has identical geocoding with the signal emission port of PT2262 chip 10; Two corresponding inverter output mouth output_1 are connected with P3^2 with the external interrupt mouth P3^3 of single-chip microcomputer respectively with output_2, and the remainder data output port on the PT2272-L4 chip 3 is unsettled.
When selected singlechip interruption type; Selected the negative edge triggering, but since PT2272-L4 chip 3 when corresponding interface is not received signal, its state of single-chip microcomputer IO mouth identification is low; (signal can height can be low) be done corresponding variation again after receiving signal; So we have added 74LS04 chip 5 handling the wireless signal receiving end, and setting signal is high level, realizes receiving signal with this and accomplishes the purpose of interrupting.
PT2262/2272 can have 12 (A0-A11) three-state address end pins (unsettled at most; Connect high level; Connect low level), combination in any can provide 531441 address codes, and PT2262 can have 6 (D0-D5) data terminal pins at most; Address code and the numeric data code set are exported from 17 pin serials, can be used for the wireless remote control radiating circuit.
The coded signal that coding chip PT2262 sends by: address code, numeric data code, synchronous code are formed a complete code word; After decoding chip PT2272 receives signal; After its address code was relatively checked through twice, the VT pin was just exported high level, and meanwhile corresponding data pin is also exported high level; If transmitting terminal presses & hold always, coding chip also can be launched continuously.When transmitter did not have button to press, PT2262 disconnected power supply, and its 17 pin is a low level; So the high frequency transmission circuit of 315MHz is not worked; When button was pressed, PT2262 got the electrician and does, and its 17th pin is exported modulated serial data signal; When 17 pin are the high frequency transmission circuit starting of oscillation of 315MHz between high period and launch the constant amplitude high-frequency signal; When the high frequency transmission circuit failure of oscillations of 17 pin for 315MHz during low flat, so high frequency transmission circuit is received the digital signal of controlling in the 17 pin output of PT2262 fully, to be equivalent to degree of modulation be 100% amplitude modulation thereby high-frequency circuit is accomplished amplitude keying (ASK modulation).
In concrete application, external oscillation resistance can carry out suitable adjusting as required, and the big more oscillation frequency of resistance is slow more, and the width of coding is big more, and the time of signaling one frame is long more.All with the 2262/1.2M=2272/200K combination, few products is used 2262/4.7M=2272/820K to most of product on the website.
At least launch 4 groups of character codes during 2262 each emissions, 2272 only detect identical address code and add numeric data code " 1 " to drive corresponding data output end be high level with drive the VT end in just can be numeric data code and be high level synchronously double.Because the characteristics of wireless transmit, first group of character code is very easy to receive zero level to disturb, and tends to produce error code, so program can discard processing.
The PT2272 decoding chip has different suffix, representes different functions, and the branch of L4/M4/L6/M6 is arranged, and wherein L representes to latch output, and data need only and successfully receive the level state that just can always keep corresponding, when next remote-control data changes, change.M representes unlatching output, and whether the level of data pin output is instantaneous and launches correspondingly with transmitting terminal, can be used for the control of similar crawl.6 and 4 expressions of suffix have the parallel control channel in several roads, and when adopting 4 channel parallel datas (PT2272-M4), the corresponding address coding should be 8, if when adopting 6 tunnel parallel data (PT2272-M6), the corresponding address coding should be 6.
In using usually, we generally adopt 8 bit address sign indicating numbers and 4 bit data sign indicating numbers, and at this moment coding circuit PT2262 is the address setting pin with the 1st～8 pin of decoding PT2272; Have three kinds of states available: unsettled, connect positive supply, three kinds of states of ground connection, 38 powers are 6561, so the geocoding nonrepeatability is 6561 groups; Have only the geocoding of transmitting terminal PT2262 and receiving end PT2272 identical, could match use, the manufacturer of remote control module is for the ease of production management; The eight bit address coding sides of the PT2262 of remote control module and PT2272 are all unsettled when dispatching from the factory; The user can easily select various encoding states like this, if the user wants to change geocoding, as long as be provided with 1～8 pin of PT2262 and PT2272 identical; For example the 1st pin ground connection the 5th pin with the PT2262 of transmitter connects positive supply; Other pin is unsettled, and the PT2272 of receiver is as long as also the 1st pin ground connection the 5th pin connects positive supply so, and other pin is unsettled just can realize that pairing receives.When both geocodings are in full accord, the D1 that receiver the is corresponding～about 4V interlocking high-level control signal of D4 end output, VT holds the also effective high level signal of output decoder simultaneously.The user can add one-level with these signals and amplify, and just can drive relay, pliotron etc. and carry out the manipulation of load teleswitch.
The principle that address code is set is: same system address sign indicating number must be consistent; Different systems can rely on the different address sign indicating number to distinguish.As for being set, which type of address code determines by user oneself fully.
PT2262 and PT2272 must be in full accord except that geocoding, oscillation resistance also must coupling, otherwise receiving range can become near even can't receive, according to actual use experience, following parameter matching effect is better, as shown in table 1.
Table 1
Single core copper cash of 17cm (bare wire diameter=0.8mm tape insulation), its optimum resonant frequency point are about single core copper cash (bare wire diameter=0.8mm tape insulation) of 315MHZ16.5cm, and its optimum resonant frequency point is about 330MHZ
Single core copper cash of 13cm (bare wire diameter=0.8mm tape insulation), therefore its optimum resonant frequency point is about 330MHZ: whiplike line segment is short more, and resonant frequency point is high more.Otherwise.
In addition:
Same internal diameter, the same number of turns.
It is close more to wind the line, and resonant frequency point is high more
Wind the line more loose (drawing back), resonant frequency point is low more
Same internal diameter, with coiling density,
Winding turns is many more, and resonant frequency point is low more
Winding turns is few more, and resonant frequency point is high more
The signal identification module is electrically connected with the demonstration output module.
Show that output module comprises single-chip microcomputer, hummer, display, LED light emitting diode 11 and Du Pont's line.
In practical implementation, wireless signal receiver module, signal identification module and demonstration output module are integrated on the single-chip microcomputer learning board.
Signal processing module in the probe unit comprises the integrated circuit that multi-resonant oscillating circuit, monostalbe trigger and audible and visible alarm circuit are formed.
14 pin of integrated circuit and 7 pin are connected the positive and negative electrode of said power supply 4 respectively.
Circuit and resistance R 1, R2, diode VD1 and capacitor C 1 constitute described multi-resonant oscillating circuit in 1,2,4,5,6 pin of integrated circuit, in order to intermittently to drive infrared transmitting tube 13.
11 pin of integrated circuit are control voltage input terminal, and external potentiometer RP is that 11 pin provide voltage Vco, and the voltage of 11 pin is less than 2 times of 8 pin voltages, to take into account sensitivity and to avoid false triggering.
Capacitor C 2 makes integrated circuit 10 pin keep low level with resistance R 3 in the moment of power connection, occurs the false alarm phenomenon when avoiding switching on, and outage back capacitor C 2 is discharged rapidly through diode VD2.
The principle of work of said integrated circuit is roughly: because driving infrared transmitting tube 13 is multi-resonant oscillating circuit, very little dutycycle makes that the average current that flows through infrared transmitting tube 13 is also very little.When certain density smog gets into smoke-box 15; The infrared ray of intermittent transmission shines infrared receiving tube 14 through the diffuse reflection of smoke particle; Converted to behind the photocurrent by infrared receiving tube 14 and to be amplified by triode VT1 again, if integrated circuit 8 pin voltage instantaneous are lower than 1/2Vco, 9 pin will be reversed to high level; Warning circuit sends chimes of doom immediately, after smog disappears, continues a period of time again could recover normal.
Signal processing module is electrically connected with the smog wireless signal transmitting module.
The smog wireless signal transmitting module is CS5211DGO chip 2 or the RF905 chip that is encapsulated in the photoelectric smoke detector 1.
Be connected with microswitch II9 between a pair of signal emission port on the CS5211DGO chip 2; The signal emission port has identical geocoding with receiver port on the PT2272-L4 chip 3, and microswitch II9 and loudspeaker 7 are connected in series with LED light emitting diode 11.
In practical operation, can realize the reset function of photoelectric smoke detector 1 when lacking by microswitch II9, represent to launch the smog alarm wireless signal during for a long time by microswitch II9.
In practical application:
For guaranteeing that false positive signal can be by normal identification.The span of resistance 8 resistances is 0.92K Ω～2M Ω, has guaranteed that the voltage dividing potential drop in the input impedance is greater than signal fault value.
The power supply 4 of keeping photoelectric smoke detector 1 is the battery of a 9V.
The power supply 4 of keeping the wrong report circuit module is four joint 6V dry cells.
The utility model is transformed the photoelectric smoke detector 1 that has CS5211DGO chip 2; Through mating corresponding PT2272-L4 chip 3 and setting address code; The reception of completion information and demodulation, and, use the warning at 74LS04 chip 5 control detector terminals again with the signal that 51 singlechip technologies processing PT2272-L4 chip 3 receives; Exist mistake also to do corresponding processing and improvement by the wrong report phenomenon to original system, the program flow diagram of inductive terminations is as shown in Figure 1.
The beneficial effect of the utility model is following:
The utility model is realized the fire signal wireless transmission at the fire initial stage, and corresponding action is arranged, and makes the operator on duty at the fire initial stage burning things which may cause a fire disaster of can nipping in the bud.The implementation of system is simple, effective and stable.
Secondly; Because we accomplish the fire signal transmission with wireless device; Detector terminal uses heavy-duty battery, makes that system's installation and removal are convenient and easy, is particularly suitable for inconvenient, larger old building improvement project of laying-out or the fire prevention project of short time.
Once more, because institute selects for use the wireless module address code that can write and coding kind many, make that the location work of encoding of the sub-detector of big system is simple.In works scope, have under the situation about using, can avoid signal to disturb through reasonable use address code than the situation or the same model module of a large amount of near frequency bands interference.
At last; The utility model is provided with the false positive signal transmitter unit; Make that the supervision personnel select different operation under different state, realized effectively effectively reflecting field condition to greatest extent because the wrong report mistake that weather reason or other reasons cause is able to suppress and eliminate by phenomenon.
Description of drawings
Fig. 1 is the process flow diagram of probe unit in a kind of fire early-warning system of the utility model;
Fig. 2 is the structural representation of photoelectric smoke detector in a kind of fire early-warning system of the utility model;
Fig. 3 is the circuit diagram of signal processing module in a kind of fire early-warning system of the utility model;
Fig. 4 is the circuit diagram of probe unit in a kind of fire early-warning system of the utility model;
Fig. 5 is the circuit diagram of wrong report circuit module in a kind of fire early-warning system of the utility model;
Fig. 6 is the circuit diagram of monitoring terminal in a kind of fire early-warning system of the utility model;
Fig. 7 is the SCM program process flow diagram of the utility model;
Fig. 8 moves towards synoptic diagram for the circuit signal of a kind of fire early-warning system of the utility model.
Detailed description of main elements:
The 1-photoelectric smoke detector; The 2-CS5211DGO chip; The 3-PT2272-L4 chip; The 4-power supply;
The 5-74LS04 chip; 6-microswitch I; The 7-loudspeaker; 8-resistance; 9-microswitch II;
The 10-PT2262 chip; The 11-LED light emitting diode; The 12-camera bellows; The 13-infrared transmitting tube;
The 14-infrared receiving tube; The 15-smoke-box.
Below in conjunction with accompanying drawing and embodiment the utility model is done explanation in further detail, the protection domain of the utility model is not limited to following embodiment.
Embodiment
Like Fig. 4, Fig. 5, Fig. 6, shown in Figure 8; A kind of fire early-warning system; Comprise the probe unit, monitor terminal and the wrong report circuit module that detect smoke signal, probe unit comprises photoelectric smoke detector 1, signal processing module, alarm, smog wireless signal transmitting module and power supply 4.
Monitor terminal comprises wireless signal receiver module, signal identification module and shows output module.
The smog wireless signal transmitting module is provided with identical geocoding with the wireless signal receiver module, is used for wireless connections between two modules.
Circuit wrong report module is provided with identical geocoding with the wireless signal module, is used for wireless connections between two modules.
The false positive signal transmitter module sends wireless false positive signal, and the wireless signal receiver module receives false positive signal, and to showing output after the false positive signal operation or reporting to the police.
The wrong report circuit module comprises wrong report wireless signal transmission unit, resistance 8, microswitch I6 and power supply 4; Wrong report wireless signal transmission unit is a PT2262 chip 10; Resistance 8 two ends connect signal emission port and the FireWire port port on the PT2262 chip 10 respectively; The geocoding of the receiver port on the pin of signal emission port and the wireless signal receiver module is identical, and microswitch I6 and resistance 8 are connected in series.
The wireless signal receiver module is a PT2272-L4 chip 3; The signal identification module is a 74LS04 chip 5; Two data output ports on the said PT2272-L4 chip 3 respectively with 74LS04 chip 5 on arbitrary phase inverter input port be connected; And data-out port has identical geocoding with the signal emission port of PT2262 chip 10; Two corresponding inverter output mouth output_1 are connected with P3^2 with the external interrupt mouth P3^3 of single-chip microcomputer respectively with output_2, and the remainder data output port on the PT2272-L4 chip 3 is unsettled.
As shown in Figure 7, detect the signal of P3^3 and P3^2 on the single-chip microcomputer in real time, as occur then changing labelled amount a unusually through interrupt function, the numerical value of b, and according to a, the value of b is come the classification of display radio signal.
Work as a=0, during b=0, the alarm free signal, green LED light emitting diode 11 is bright, shows on the display screen " AllPoints R Safe ".
Work as a=0, during b=1, the alarm free signal, green LED light emitting diode 11 is bright, shows on the display screen " AllPoints R Safe ".
Work as a=1, during b=0, be fire signal, red LED light emitting diode 11 is bright, and buzzer warning shows on the display screen " Fire Alarm ".
Work as a=1, during b=1, be false positive signal, 11 flickers of yellow led light emitting diode, hummer sends prompt tone, shows on the display screen " Point 1 IS Safe Danger Relieved ".
The signal identification module is electrically connected with the demonstration output module.
Show that output module comprises single-chip microcomputer, hummer, display, LED light emitting diode 11 and Du Pont's line.
Wireless signal receiver module, signal identification module and demonstration output module are integrated on the single-chip microcomputer learning board.
As shown in Figure 2; Photoelectric smoke detector 1 comprises camera bellows 12, infrared transmitting tube 13 and infrared receiving tube 14; Be fixed with infrared transmitting tube 13 and infrared receiving tube 14 on camera bellows 12 inwalls; The position of infrared transmitting tube 13 is higher than infrared receiving tube 14, and the axial direction of the two is vertical each other, and camera bellows 12 inside are formed with the smoke-box 15 that supplies the flue gas circulation.
Infrared transmitting tube 13 sends infrared ray depth of parallelism light beam preferably; Infrared receiving tube 14 can't receive infrared ray under the smokeless situation in darkroom 12; After smog gets into smoke-box 15; Because " diffuse reflection " of smoke particle effect, infrared receiving tube 14 will receive the light signal of infrared transmitting tube 13 emissions and produce photocurrent, realize by the transition process of smoke signal to electric signal.
As shown in Figure 3, the signal processing module in the probe unit comprises the integrated circuit that multi-resonant oscillating circuit, monostalbe trigger and audible and visible alarm circuit are formed.
14 pin of integrated circuit and 7 pin are connected the positive and negative electrode of said power supply 4 respectively.
Circuit and resistance R 1, R2, diode VD1 and capacitor C 1 constitute described multi-resonant oscillating circuit in 1,2,4,5,6 pin of integrated circuit, in order to intermittently to drive infrared transmitting tube 13.
11 pin of integrated circuit are control voltage input terminal, and external potentiometer RP is that 11 pin provide voltage Vco, and the voltage of 11 pin is less than 2 times of 8 pin voltages.
Signal processing module is electrically connected with the smog wireless signal transmitting module.
The smog wireless signal transmitting module is CS5211DGO chip 2 or the RF905 chip that is encapsulated in the photoelectric smoke detector 1.
Be connected with microswitch II9 between a pair of signal emission port on the CS5211DGO chip 2; The signal emission port has identical geocoding with receiver port on the PT2272-L4 chip 3, and microswitch II9 and loudspeaker 7 are connected in series with LED light emitting diode 11.
In practical operation, can realize the reset function of photoelectric smoke detector 1 when lacking by microswitch II9, represent to launch the smog alarm wireless signal during for a long time by microswitch II9.
The power supply 4 of keeping photoelectric smoke detector 1 is the battery of a 9V.
The power supply 4 of keeping the wrong report circuit module is four joint 6V dry cells.
Technique scheme is a kind of embodiment of the utility model; For those skilled in the art; On the basis that the utility model discloses application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described structure of the above-mentioned embodiment of the utility model; Therefore the mode of front description is preferably, and does not have restrictive meaning.
Claims (9)
1. fire early-warning system is characterized in that:
Described system comprises probe unit, monitor terminal and the wrong report circuit module that detects smoke signal, and described probe unit comprises photoelectric smoke detector (1), signal processing module, alarm, smog wireless signal transmitting module and power supply (4);
Described monitor terminal comprises wireless signal receiver module, signal identification module and shows output module;
Described smog wireless signal transmitting module is provided with identical geocoding with described wireless signal receiver module, is used for wireless connections between two described modules;
Said photoelectric smoke detector (1) is exported to the smog wireless signal transmitting module with signals detected through said signal processing module, sends the wireless fire disaster signal; Said wireless signal receiver module receives the wireless fire disaster signal, and to showing output after the fire signal operation or reporting to the police;
Described circuit wrong report module is provided with identical geocoding with described wireless signal module, is used for wireless connections between two described modules;
Described false positive signal transmitter module sends wireless false positive signal, and said wireless signal receiver module receives false positive signal, and to showing output after the false positive signal operation or reporting to the police.
2. a kind of fire early-warning system according to claim 1 is characterized in that:
Described wrong report circuit module comprises described wrong report wireless signal transmission unit, resistance (8), microswitch I (6) and described power supply (4); Described wrong report wireless signal transmission unit is PT2262 chip (10); Described resistance (8) two ends connect signal emission port and FireWire port port on the said PT2262 chip (10) respectively; The geocoding of the receiver port on the pin of said signal emission port and the said wireless signal receiver module is identical, and described microswitch I (6) is connected in series with resistance (8).
3. a kind of fire early-warning system according to claim 2 is characterized in that:
Described wireless signal receiver module is PT2272-L4 chip (3); Described signal identification module is 74LS04 chip (5); Two data output ports on the said PT2272-L4 chip (3) respectively with said 74LS04 chip (5) on arbitrary phase inverter input port be connected; And described data-out port has identical geocoding with the signal emission port of said PT2262 chip (10); Two corresponding inverter output mouth output_1 are connected with P3^2 with the external interrupt mouth P3^3 of single-chip microcomputer respectively with output_2, and the remainder data output port on the said PT2272-L4 chip (3) is unsettled;
Described signal identification module is electrically connected with described demonstration output module.
4. a kind of fire early-warning system according to claim 3 is characterized in that:
Described demonstration output module comprises described single-chip microcomputer, hummer, display, LED light emitting diode (11) and Du Pont's line.
5. a kind of fire early-warning system according to claim 2 is characterized in that:
The span of said resistance (8) is 0.92K Ω～2M Ω.
6. a kind of fire early-warning system according to claim 1 is characterized in that:
Described photoelectric smoke detector (1) comprises camera bellows (12), infrared transmitting tube (13) and infrared receiving tube (14); Be fixed with described infrared transmitting tube (13) and infrared receiving tube (14) on described camera bellows (12) inwall; The position of described infrared transmitting tube (13) is higher than described infrared receiving tube (14); And the axial direction of the two is vertical each other, and described camera bellows (12) inside is formed with the smoke-box (15) that supplies the flue gas circulation; The infrared beam signal of said infrared transmitting tube (13) emission converts photosignal into through described infrared receiving tube (14).
7. a kind of fire early-warning system according to claim 6 is characterized in that:
Signal processing module in the said probe unit comprises the integrated circuit of being made up of multi-resonant oscillating circuit, monostalbe trigger and audible and visible alarm circuit;
14 pin of said integrated circuit and 7 pin are connected the positive and negative electrode of said power supply (4) respectively;
Circuit and resistance R 1, R2, diode VD1 and capacitor C 1 constitute described multi-resonant oscillating circuit in 1,2,4,5,6 pin of said integrated circuit, in order to intermittently to drive infrared transmitting tube (13);
Said integrated circuit 8,9,11,12,13 pin in-circuit resistance R6, R7, R8 and potentiometer RP, triode VT1, infrared receiving tube (14) and capacitor C 3 constitute described monostalbe trigger; Described triode VT1 and infrared receiving tube (14) and resistance R 6, R7 constitute the trigger circuit of said monostalbe trigger;
11 pin of said integrated circuit are control voltage input terminal, and external potentiometer RP is that 11 pin provide voltage Vco, and the voltage of 11 pin is less than 2 times of 8 pin voltages;
Resistance R 5, triode VT2, LED (11), musical film and loudspeaker (7) constitute described audible and visible alarm circuit;
Described signal processing module is electrically connected with described smog wireless signal transmitting module.
8. a kind of fire early-warning system according to claim 7 is characterized in that:
Described smog wireless signal transmitting module is for being encapsulated in CS5211DGO chip (2) or the RF905 chip in the said photoelectric smoke detector (1).
9. a kind of fire early-warning system according to claim 8 is characterized in that:
Be connected with microswitch II (9) between a pair of signal emission port on the said CS5211DGO chip (2); Described signal emission port has identical geocoding with receiver port on the said PT2272-L4 chip (3), and said microswitch II (9) is connected in series with described loudspeaker (7) and LED light emitting diode (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205325923U CN202454028U (en) | 2011-12-19 | 2011-12-19 | Fire early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205325923U CN202454028U (en) | 2011-12-19 | 2011-12-19 | Fire early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454028U true CN202454028U (en) | 2012-09-26 |
Family
ID=46869875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205325923U Expired - Fee Related CN202454028U (en) | 2011-12-19 | 2011-12-19 | Fire early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454028U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247138A (en) * | 2013-05-24 | 2013-08-14 | 成都市晶林科技有限公司 | Infrared imaging lens with LED (Light Emitting Diode) alarm |
| WO2018137094A1 (en) * | 2017-01-24 | 2018-08-02 | 深圳企管加企业服务有限公司 | Early warning system and method by robot, combined with internet of things |
| CN108399707A (en) * | 2018-05-11 | 2018-08-14 | 欧阳培光 | A kind of improved smoke detector of structure |
| CN110349387A (en) * | 2019-07-12 | 2019-10-18 | 南京中消安全技术有限公司 | The addressing method of fire detection alarm system and wherein detector |
| CN111127818A (en) * | 2019-12-06 | 2020-05-08 | 浙江大邦科技有限公司 | NB-IoT smoke sensing control system |
-
2011
- 2011-12-19 CN CN2011205325923U patent/CN202454028U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247138A (en) * | 2013-05-24 | 2013-08-14 | 成都市晶林科技有限公司 | Infrared imaging lens with LED (Light Emitting Diode) alarm |
| WO2018137094A1 (en) * | 2017-01-24 | 2018-08-02 | 深圳企管加企业服务有限公司 | Early warning system and method by robot, combined with internet of things |
| CN108399707A (en) * | 2018-05-11 | 2018-08-14 | 欧阳培光 | A kind of improved smoke detector of structure |
| CN110349387A (en) * | 2019-07-12 | 2019-10-18 | 南京中消安全技术有限公司 | The addressing method of fire detection alarm system and wherein detector |
| CN111127818A (en) * | 2019-12-06 | 2020-05-08 | 浙江大邦科技有限公司 | NB-IoT smoke sensing control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202454028U (en) | Fire early warning system | |
| CN102157861A (en) | Intelligent multifunctional socket | |
| CN107702866A (en) | The intelligent wireless water valve device of real-time leak water detdction | |
| CN104318720A (en) | STC89C52-based smoke and gas alarm system | |
| CN105354969A (en) | Multifactor comprehensive fire detection alarm response system | |
| CN203645067U (en) | Intelligent socket having fire alarm function | |
| CN105389926A (en) | Fire alarm and response system | |
| CN214971365U (en) | Distributed fire fighting device | |
| CN212274982U (en) | Intelligent environment monitoring system based on Internet of things | |
| CN105118218A (en) | Firefighting alarm | |
| CN205177050U (en) | Video fire prevention temperature measurement early warning control all -in -one | |
| CN204204172U (en) | A kind of fire-fighting detecting devices connected by plastic optical fiber networking | |
| CN209895467U (en) | Remote fire monitoring system based on single chip microcomputer | |
| CN205158543U (en) | Intelligent building system of fleing of self -checking regularly | |
| CN201862185U (en) | Fire alarm linkage device | |
| CN204856064U (en) | Multi -media network monitored control system | |
| CN205177121U (en) | All -in -one is kept watch on to super remote forest fire early warning location | |
| CN215730128U (en) | Smoke sensor with booster circuit | |
| CN204513693U (en) | Single-phase Self-start controller for use after power recovery of air conditioner | |
| CN203966281U (en) | For the indoor fire alarm system of steel mill | |
| CN204166408U (en) | Dry-type transformer is wireless arc light temperature controller | |
| CN216820098U (en) | Thing networking coupling module based on zigbee communication protocol | |
| CN203179236U (en) | Remote natural gas detection alarm system | |
| CN208092905U (en) | A kind of intelligence cigarette sense detecting and warning system | |
| CN211237074U (en) | Wireless smoke detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20121219 |