CN213024751U - Intelligent building security alarm system - Google Patents
Intelligent building security alarm system Download PDFInfo
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- CN213024751U CN213024751U CN202022063977.1U CN202022063977U CN213024751U CN 213024751 U CN213024751 U CN 213024751U CN 202022063977 U CN202022063977 U CN 202022063977U CN 213024751 U CN213024751 U CN 213024751U
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Abstract
The utility model relates to an intelligent building security alarm system, it includes air guide subassembly and solenoid valve, and the air guide subassembly includes the air duct, solenoid valve and air duct intercommunication, the one end and the outdoor gas source intercommunication of air duct, the one end and the indoor gas equipment intercommunication in gas source are kept away from to the air duct, the solenoid valve is located outdoors, the solenoid valve is coupled with the gas concentration detection circuitry that the control solenoid valve opened and close, gas concentration detection circuitry includes: gas concentration detection unit, switch unit and signal transceiver. This application has the solenoid valve and gets the electricity and close the air duct, and indoor gas equipment stops the gas of discharging, has realized the function that the indoor gas of timely control leaked for indoor gas is difficult for continuously leaking, indoor comparatively safe effect.
Description
Technical Field
The application relates to the technical field of building security engineering, in particular to an intelligent building security alarm system.
Background
The fuel gas is a general term of fuel gas fuel, and can burn and release heat for urban residents and industrial enterprises to use; the fuel gas is divided into natural gas, artificial fuel gas, liquefied petroleum gas, biomass gas and the like according to the source; the use of fuel gas in daily life of residents is more and more extensive, and the fuel gas is used for heating, bathing and the like besides traditional cooking.
The gas system used indoors by residents generally comprises gas equipment and a gas source, wherein the gas source is located outdoors, the gas equipment is located indoors, and the gas source conveys gas to the gas equipment through a gas guide pipe; the gas also has risks in the use process, for example, the gas equipment switch is not closed to cause gas leakage, and the leaked gas is easy to explode when reaching a certain concentration; at present, some intelligent buildings are generally provided with an alarm device near the space where indoor gas equipment is located so as to warn indoor personnel of gas leakage.
The existing gas leakage alarm generally comprises a gas concentration detection device and an alarm terminal, wherein the alarm terminal generally adopts a buzzer or an indicator lamp, and transmits warning information to indoor personnel in a sound-light alarm mode.
In view of the above-mentioned related art, the inventor thinks that there is the defect that when gas leakage occurs indoors and people can not respond to the alarm signal sent by the indoor alarm in time, the gas leakage can not be controlled in time, resulting in continuous gas leakage and easy explosion of indoor gas due to too high concentration.
SUMMERY OF THE UTILITY MODEL
In order to reduce the influence that causes when gas concentration is too high, this application provides an intelligent building security alarm system.
The application provides a pair of intelligent building security alarm system adopts following technical scheme:
the utility model provides an intelligent building security protection alarm system, includes the air guide subassembly, and the air guide subassembly includes air duct and solenoid valve, solenoid valve and air duct intercommunication, the one end and the gas source intercommunication of air duct, the one end and the indoor gas equipment intercommunication in gas source are kept away from to the air duct, the solenoid valve is located outdoors, the gas concentration detection circuitry that control solenoid valve opened and close is coupled to the solenoid valve, gas concentration detection circuitry includes:
the gas concentration detection unit is used for detecting the concentration of gas to output a gas concentration detection signal, is provided with a gas concentration reference value and outputs a gas concentration comparison signal when the gas concentration detection signal is greater than the gas reference value, and the gas concentration reference value is smaller than the concentration of explosion of the gas;
the switch unit is coupled with the gas concentration detection unit and is connected in series in a power supply loop of the electromagnetic valve so as to output a switch signal to control the electromagnetic valve to be closed when receiving a gas concentration comparison signal;
and the signal transceiver is connected in series with the power supply loop of the electromagnetic valve so as to send a gas leakage alarm signal to the signal terminal when the electromagnetic valve is electrified and conducted.
By adopting the technical scheme, the gas concentration detection unit detects the indoor gas concentration in real time and outputs a gas concentration detection signal, when gas leakage occurs indoors, the gas concentration detection unit compares the gas concentration detection signal with a gas concentration reference value, when the gas concentration detection signal is greater than the gas concentration reference value, the gas concentration detection unit outputs a gas concentration comparison signal to the switch unit, the switch unit receives the gas concentration comparison signal and outputs a switch signal to switch on a power supply loop of the electromagnetic valve, the electromagnetic valve is a normally open type electromagnetic valve, at the moment, the electromagnetic valve positioned outdoors is electrified and closes the gas guide pipe, the indoor gas equipment stops discharging the gas, meanwhile, the signal transceiver sends a gas leakage alarm signal to the signal terminal to remind a householder of timely treating gas leakage, so that the influence on the indoor environment caused by overhigh gas concentration is reduced. When gas concentration detected signal is less than gas concentration benchmark value, gas concentration detecting element exports low electric frequency signal to the switch unit, does not switch on when the switch unit receives low electric frequency signal, and the solenoid valve is not got electric, and the solenoid valve is in the open mode this moment, is difficult for influencing resident normal use gas.
Preferably, the gas concentration detection unit includes gas sensitive resistor Ro, the one end of gas sensitive resistor Ro is coupled with the one end of first resistance R1, and the other end of gas sensitive resistor Ro is coupled with the VCC power, and the other end of first resistance R1 is ground, the switch unit is coupled in the connected node of gas sensitive resistor Ro and first resistance R1 in order to receive gas concentration comparison signal.
By adopting the technical scheme, when the indoor gas concentration detected by the gas-sensitive resistor Ro is increased, the resistance value of the gas-sensitive resistor Ro is increased, and then the voltage divided at the two ends of the gas-sensitive resistor Ro is increased, and when the voltage divided at the two ends of the gas-sensitive resistor Ro is more than the voltage divided at the two ends of the first resistor R1, the connection node of the gas-sensitive resistor Ro and the first resistor R1 outputs a gas concentration comparison signal to the switch unit; the function of gas concentration comparison signal output is realized. When the voltage divided by the two ends of the gas-sensitive resistor Ro is less than the voltage divided by the two ends of the first resistor R1, the gas concentration detection unit outputs a low-frequency signal to the switch unit, and the electromagnetic valve is not powered; when the gas concentration detection signal is smaller than the gas concentration reference value, the electromagnetic valve is conducted, and the normal use of the gas is not easily influenced.
Preferably, the switch unit includes a first triode Q1 and a second triode Q2, the base of the first triode Q1 is coupled to the connection node of the gas-sensitive resistor Ro and the first resistor R1, the emitter of the first triode Q1 is grounded, the collector of the first triode Q1 is connected with the VCC power supply through the second resistor R2, the collector of the first triode Q1 is connected with the base of the second triode Q2 through the third resistor R3, the emitter of the second triode Q2 is connected with the VCC power supply after passing through the fourth resistor R4, and the collector of the second triode Q2 is grounded.
Through adopting above-mentioned technical scheme, when first triode Q1 received the gas concentration comparison signal, the base of first triode Q1 was converted into the high-frequency state and switched on by the low-frequency state, and the base of second triode Q2 was converted into the low-frequency state and switched on by the high-frequency state this moment, and the collecting electrode output switching signal control solenoid valve of second triode Q2 is closed, and the air duct stops to discharge the gas. When the first triode Q1 does not receive the gas concentration comparison signal, the first triode Q1 maintains the low-frequency state, the second triode Q2 maintains the high-frequency state, the switch control system does not send out a switch signal, and the electromagnetic valve is not powered on and is in the open state.
Preferably, the switch unit further comprises a relay KM1, the relay KM1 is connected in series with the collector of the second triode Q2 and then grounded, the relay KM1 comprises a first normally open contact switch KM1-1, and the first normally open contact switch KM1-1 is connected in series in a power supply loop of the solenoid valve.
By adopting the technical scheme, when the second triode Q2 outputs a switching signal to the relay KM1, the normally open contact switch KM1-1 is closed, the electromagnetic valve is electrified, and one end, close to the gas equipment, of the closed gas guide pipe of the electromagnetic valve stops discharging gas; the gas leakage is controlled in time, the gas is not easy to leak continuously, and the indoor safety is high; when the second triode Q2 does not receive the switching signal, the base of the second triode Q2 maintains the high-frequency state, the normally open contact switch KM1-1 is not closed, and the solenoid valve is not powered and is in the open state.
Preferably, intelligent building security alarm system still includes the exhaust fan, the exhaust fan is installed outdoors, and the wall that is close to indoor gas equipment is seted up the outdoor and indoor hole of airing exhaust of intercommunication, the exhaust fan is just to the hole of airing exhaust, indoor is kept away from to the air-out end of exhaust fan, the exhaust fan is established ties in the power supply loop of solenoid valve.
Through adopting above-mentioned technical scheme, the exhaust fan is established ties in the power supply circuit of solenoid valve, and when switch element sent switching signal when switching on the power supply circuit of solenoid valve, the solenoid valve was closed and the exhaust fan got the electricity and starts this moment, and the exhaust fan rotates and with indoor gas discharge indoor that has leaked, and the gas of indoor leakage is discharged outdoor by the hole of airing exhaust with higher speed, and the gas of indoor leakage reduces, and is indoor comparatively safe.
Preferably, the gas concentration detection circuit further comprises a warning and reminding unit, wherein the warning and reminding unit comprises a warning lamp L1 and a buzzer H1 which are arranged indoors; the warning lamp L1 is connected in series with the buzzer H1, the relay KM1 further comprises a second normally open contact switch KM1-2, and the second normally open contact switch KM1-2 is connected in series with a power supply loop of the warning lamp L1 to send out a red warning signal and a sound warning signal when receiving a switching signal.
Through adopting above-mentioned technical scheme, when switch unit output switching signal to warning unit, second normally open contact switch KM1-2 was closed this moment, warning light L1 sent red warning signal and bee calling organ H1 sent sound warning signal in order to warn that indoor personnel indoor gas concentration is too high, probably takes place the gas leakage, indoor personnel respond to the safeguard measure of warning and responding.
Preferably, the warning and reminding unit further comprises a safety lamp L2, the relay KM1 further comprises a normally closed contact switch KM1-3, the safety lamp L2 is connected with a power supply, and the normally closed contact switch KM1-3 is connected in series with a power supply loop of the safety lamp L2 to send out a green reminding signal when the switch signal is not received.
By adopting the technical scheme, when the execution unit does not receive the switch signal, the normally closed contact switch KM1-3 is in a normally closed state, and the safety lamp L2 sends out a green safety signal to remind indoor personnel that the indoor gas concentration is normal at the moment.
Preferably, the exhaust hole is provided with a support frame, the support frame is located outdoors and is fixedly connected with the wall, the support frame is fixedly connected with the exhaust fan, and a gap is reserved between the exhaust fan and the wall.
Through adopting above-mentioned technical scheme, leave gapped setting between exhaust fan and support frame fixed connection and exhaust fan and the wall, leak when indoor emergence gas, the exhaust fan starts and with the outdoor back of the gas discharge of indoor most leakage, indoor gas concentration reduces, exhaust fan stall when the concentration of indoor leakage gas is less than the concentration reference value, indoor still remaining fractional gas can be discharged by the hole of airing exhaust indoor this moment, the exhaust fan is aired exhaust with the nature that is difficult for interfering the hole of airing exhaust.
Preferably, the air guide subassembly still includes the protective tube way, protective tube way and wall fixed connection, the air duct is worn to locate in the protective tube way, and protective tube way's lateral wall integrated into one piece has the protecting crust, and the protecting crust is located outdoors, protecting crust and protective tube way intercommunication, and the solenoid valve is located the protecting box.
Through adopting above-mentioned technical scheme, protective tube's setting for be located outdoor air duct and be difficult for receiving external destruction and break, lead to the gas to leak, the installation of air duct is comparatively safe, and the setting of protecting crust makes the solenoid valve be difficult for receiving external disturbance when being located outdoors for a long time and leads to the function harm, increases the life of solenoid valve.
Preferably, the one end that the gas source was kept away from to the protection pipeline is provided with the sealing washer, the sealing washer is fixed with the inner wall of protection pipeline, the sealing washer is stretched out to the one end that the gas source was kept away from to the air duct, the air duct supports tightly with the inner wall of sealing washer.
Through adopting above-mentioned technical scheme, the air duct stretches out the sealing washer and supports tight setting with the sealing washer inner wall, and when indoor emergence gas was leaked, the gas that the air duct leaked was difficult for flowing into in the protective tube way, was difficult for piling up the gas in the protective tube way and takes place the explosion, and the installation of air duct is comparatively safe.
Preferably, the warning light L1, the buzzer H1 and the safety light L2 are all installed on the wall in the room and far away from the gas appliance.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the power supply circuit of the electromagnetic valve is conducted, the electromagnetic valve is a normally open type electromagnetic valve, at the moment, the electromagnetic valve positioned outdoors is electrified and the air guide pipe is closed, indoor gas equipment stops discharging gas, the function of controlling indoor gas leakage in time is realized, and the indoor gas is not easy to leak continuously; the influence on the indoor when the gas concentration is too high is reduced.
2. When the voltage divided by the two ends of the gas-sensitive resistor Ro is less than the voltage divided by the two ends of the first resistor R1, the gas concentration detection unit outputs a low-frequency signal to the switch unit, and the electromagnetic valve is not powered; the electromagnetic valve is conducted when the gas concentration detection signal is smaller than the gas concentration reference value, and the normal use of the gas is not easily influenced;
3. the air duct stretches out the sealing washer and supports tight setting with the sealing washer inner wall, and when indoor emergence gas was leaked, the gas that the air duct leaked was difficult for flowing into protective conduit in, the gas that is difficult for piling up in the protective conduit explodes, and the installation of air duct is comparatively safe.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic view of the configuration of the portion of the air guide assembly within the chamber in this embodiment;
FIG. 3 is a schematic view of the internal structure of the air guide assembly;
FIG. 4 is an enlarged view of A in FIG. 3;
FIG. 5 is a circuit diagram of a gas detection circuit in the present embodiment;
fig. 6 is a circuit diagram of the warning alert unit in the present embodiment.
Description of reference numerals: 1. an air guide assembly; 101. an air duct; 102. an electromagnetic valve; 2. a warning component; 3. an exhaust fan; 4. a support frame; 5. an air exhaust hole; 6. a guard assembly; 61. protecting the pipeline; 62. a protective shell; 7. mounting a plate; 8. a seal ring; 9. a gas concentration detection unit; 10. a switch unit; 11. a signal transceiver; 12. and a warning reminding unit.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The gas system used by residents comprises an outdoor gas source and indoor gas equipment, wherein the outdoor gas source is used for conveying the outdoor gas to the indoor space in a pipeline conveying mode.
The embodiment of the application discloses intelligent building security alarm system. Referring to fig. 1 and 2, the intelligent building security alarm system comprises an air guide component 1, a warning reminding component and an exhaust fan 3, wherein the air guide component 1 and the exhaust fan 3 are both installed outdoors, and the warning component 2 is installed on an indoor wall.
The wall that is close to indoor gas equipment has seted up hole 5 of airing exhaust, and hole 5 intercommunication of airing exhaust is indoor and outdoor, is fixed with support frame 4 on the wall, and support frame 4 is located outdoors, and exhaust fan 3 and support frame 4 fixed connection, exhaust fan 3 just keep away from hole 5 of airing exhaust 5 to the air-out end of exhausting fan 3.
The air guide assembly 1 comprises an air guide pipe 101 and an electromagnetic valve 102, wherein the air guide pipe 101 is installed on the wall and is communicated with the indoor space and the outdoor space, the electromagnetic valve 102 is communicated with the air guide pipe 101, and the electromagnetic valve 102 is located outdoors. The periphery of the air guide assembly 1 is provided with a protective assembly 6, the protective assembly 6 comprises a protective pipeline 61 and a protective shell 62, the protective pipeline 61 and the protective shell 62 are integrally formed, the air guide pipe 101 penetrates through the protective pipeline 61, and the electromagnetic valve 102 is located in the protective shell 62.
The warning assembly 2 comprises a warning lamp 1, a buzzer H1 and a safety lamp L2, wherein the warning lamp L1, the buzzer H1 and the safety lamp L2 are all installed on the same installation plate 7, and the installation plate is fixedly connected with an indoor wall far away from gas equipment.
Referring to fig. 3 and 4, a sealing ring 8 is arranged at one indoor end of the protective conduit 61, the outer peripheral surface of the sealing ring 8 is abutted against the inner wall of the protective conduit 61, the gas guide pipe 101 extends out of one end of the protective conduit 61 far away from the gas source, and the gas guide pipe 101 is abutted against the inner wall of the sealing ring 8.
Referring to fig. 5, the exhaust fan 3 is connected in series with the electromagnetic valve 102, the electromagnetic valve 102 is coupled with a gas concentration detection circuit for simultaneously controlling the electromagnetic valve 102 and the exhaust fan 3 to be powered on and powered off simultaneously, the gas concentration detection circuit includes a gas concentration detection unit 9, a switch unit 10, a signal transceiver 11 and a warning and reminding unit 12,
the gas concentration detection unit 9 is used for detecting the concentration of the gas to output a gas concentration detection signal, setting a gas concentration reference value and outputting a gas concentration comparison signal when the gas concentration detection signal is greater than the gas reference value.
The gas concentration detecting unit 9 includes a gas sensitive resistor Ro, one end of the gas sensitive resistor Ro is coupled with one end of a first resistor R1, the other end of the gas sensitive resistor Ro is coupled with a VCC power supply, the other end of the first resistor R1 is grounded, and the switch unit 10 is coupled with a connection node between the gas sensitive resistor Ro and the first resistor R1.
The switch unit 10 is coupled to the gas concentration detection unit 9 and is connected in series in the power supply loop of the electromagnetic valve 102 to output a switch signal and control the electromagnetic valve to close when receiving the gas concentration comparison signal.
The switching unit 10 includes a first triode Q1 and a second triode Q2, a base of the first triode Q1 is coupled to a connection node between the gas-sensitive resistor Ro and the first resistor R1, an emitter of the first triode Q1 is grounded, a collector of the first triode Q1 is connected to a VCC power supply through a second resistor R2, a collector of the first triode Q1 is connected to a base of the second triode Q2 through a third resistor R3, an emitter of the second triode Q2 is connected to the VCC power supply through a fourth resistor R4, and a collector of the second triode Q2 is grounded; the switch unit 10 further comprises a relay KM1, the relay KM1 is connected with the collector of the second triode Q2 in series and then grounded, the relay KM1 comprises a first normally open contact switch KM1-1, and the first normally open contact switch KM1-1 is connected in series in a power supply loop of the electromagnetic valve 102.
The signal transceiver 11 is connected in series to a power supply circuit of the solenoid valve 102 to send a gas leakage alarm signal to the signal terminal when the solenoid valve 102 is electrically conducted. In this embodiment, the signal terminal may be a host cell phone, and besides this embodiment, the signal terminal may also be a computer, a tablet computer, an intelligent watch, and other devices.
Referring to fig. 5 and 6, the gas concentration detection circuit further includes a warning and reminding unit 12, and the warning and reminding unit 12 includes a warning lamp L1 and a buzzer H1 installed indoors; the warning lamp L1 is connected with the buzzer H1 in series, the relay KM1 further comprises a second normally open contact switch KM1-2, and the second normally open contact switch KM1-2 is connected with a power supply loop of the warning lamp L1 in series to send out a red warning signal and a sound warning signal when receiving the switch signal; the warning and reminding unit 12 further comprises a safety lamp L2, the relay KM1 further comprises a normally closed contact switch KM1-3, the safety lamp L2 is connected with a power supply, and the normally closed contact switch KM1-3 is connected with a power supply loop of the safety lamp L2 in series to send out a green reminding signal when the switch signal is not received.
The implementation principle of the intelligent building security alarm system in the embodiment of the application is as follows:
the gas concentration detection unit 9 detects the indoor gas concentration in real time and outputs a gas concentration detection signal, when gas leakage occurs indoors, the gas sensitive resistor Ro detects the gas in real time, the gas concentration is increased, so that the resistance value of the gas sensitive resistor Ro is increased, the voltage divided at two ends of the gas sensitive resistor Ro is increased, and a connection node of the gas sensitive resistor Ro and the first resistor R1 outputs a gas concentration comparison signal; the gas concentration detection unit 9 outputs a high-frequency signal to enable the base of the first triode Q1 to be converted into a high-frequency state from a low-frequency state and to be conducted, at the moment, the base of the second triode Q2 receives a gas concentration comparison signal and then is converted into a low-frequency state from the high-frequency state and outputs a switch signal to the relay KM1, the relay KM1 receives the switch signal and then closes the normally-open contact switch KM1-1 to enable the power supply circuit of the electromagnetic valve 102 to be conducted, meanwhile, the warning lamp L1 sends out a red warning signal and the buzzer sends out a sound warning, the safety lamp L1 is extinguished, at the moment, the electromagnetic valve 102 is electrified and closes the air duct 101, the indoor gas equipment stops discharging gas, the exhaust fan 3 starts and discharges the indoor gas leaked in the air, the indoor leaked gas is continuously discharged, when the gas concentration detection signal is smaller than a gas concentration reference value, the connection node of the gas-sensitive resistor R0 and the first resistor R1 outputs a low-frequency signal to, the first transistor Q1 is not turned on when it does not receive the low frequency signal, the solenoid valve 102 is not energized, and the solenoid valve 102 is in an open state.
Due to the arrangement of the protective pipeline 61, the part of the air duct 101 located outdoors is not easily damaged by external damage, and the service life of the air duct 101 is prolonged.
The signal transceiver is arranged, when gas leakage occurs indoors and nobody is in the room, the signal transceiver can send warning signals of the gas leakage to a mobile phone of a householder to prompt the householder to process the gas leakage in time.
Due to the arrangement of the protective shell 62, the electromagnetic valve 102 is not easily damaged and interfered by the outside to cause functional damage, and the service life of the electromagnetic valve 102 is prolonged.
The setting of sealing washer 8, when taking place the gas leakage, the difficult entering protective conduit 61 of gas that the air duct 101 revealed, difficult explosion takes place because of getting into too much gas in the protective conduit 61.
Leave gapped setting between exhaust fan 3 and the hole of airing exhaust 5, when the gas concentration of revealing is less than gas concentration benchmark value, exhaust fan 3 does not influence the nature of the hole of airing exhaust 5 and airs exhaust.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides an intelligent building security alarm system which characterized in that: including air guide subassembly (1), air guide subassembly (1) includes air duct (101) and solenoid valve (102), solenoid valve (102) and air duct (101) intercommunication, the one end and the gas source intercommunication of air duct (101), the one end and the gas equipment intercommunication in gas source are kept away from in air duct (101), solenoid valve (102) are located outdoors, the gas concentration detection circuitry that control solenoid valve (102) opened and close is coupled to solenoid valve (102), gas concentration detection circuitry includes:
the gas concentration detection unit (9) is used for detecting the concentration of gas to output a gas concentration detection signal, is provided with a gas concentration reference value and outputs a gas concentration comparison signal when the gas concentration detection signal is greater than the gas reference value, and the gas concentration reference value is smaller than a gas concentration explosion critical value;
the switch unit (10) is coupled with the gas concentration detection unit (9) and is connected in series in a power supply loop of the electromagnetic valve (102) to output a switch signal to control the electromagnetic valve (102) to be closed when receiving a gas concentration comparison signal;
and the signal transceiver (11) is connected in series with a power supply loop of the electromagnetic valve (102) to send a gas leakage alarm signal to the signal terminal when the electromagnetic valve (102) is electrified and conducted.
2. The intelligent building security alarm system of claim 1, wherein: gas concentration detecting element (9) include gas sensitive resistance Ro, the one end of gas sensitive resistance Ro is coupled with the one end of first resistance R1, and the other end and the VCC power of gas sensitive resistance Ro are coupled, and first resistance R1's the other end ground connection, switch element (10) are coupled in gas sensitive resistance Ro and first resistance R1's connected node in order to receive gas concentration comparison signal.
3. The intelligent building security alarm system of claim 2, wherein: the switch unit (10) includes first triode Q1 and second triode Q2, the base of first triode Q1 is coupled in gas-sensitive resistance Ro and the connected node of first resistance R1, the projecting pole ground of first triode Q1, the collecting electrode of first triode Q1 is connected with the VCC power through second resistance R2, the collecting electrode of first triode Q1 is connected with the base of second triode Q2 through third resistance R3, the projecting pole of second triode Q2 is connected with the VCC power behind fourth resistance R4, the collecting electrode ground of second triode Q2.
4. The intelligent building security alarm system of claim 3, wherein: the switch unit (10) further comprises a relay KM1, the relay KM1 is connected with the collector of the second triode Q2 in series and then grounded, the relay KM1 comprises a first normally open contact switch KM1-1, and the first normally open contact switch KM1-1 is connected in series in a power supply loop of the solenoid valve (102).
5. The intelligent building security alarm system of claim 1, wherein: intelligent building security alarm system still includes exhaust fan (3), exhaust fan (3) are installed outdoors, are close to indoor gas equipment's wall and set up the outdoor and indoor hole (5) of airing exhaust of intercommunication, exhaust fan (3) are just to hole (5) of airing exhaust, indoor is kept away from to the air-out end of exhaust fan (3), exhaust fan (3) are established ties in the power supply loop of solenoid valve (102).
6. The intelligent building security alarm system of claim 4, wherein: the gas concentration detection circuit also comprises a warning and reminding unit (12), wherein the warning and reminding unit (12) comprises a warning lamp L1 and a buzzer H1 which are arranged indoors; the warning lamp L1 is connected in series with the buzzer H1, the relay KM1 further comprises a second normally open contact switch KM1-2, and the second normally open contact switch KM1-2 is connected in series with a power supply loop of the warning lamp L1 to send out a red warning signal and a sound warning signal when receiving a switching signal.
7. The intelligent building security alarm system of claim 6, wherein: the warning and reminding unit (12) further comprises a safety lamp L2, the relay KM1 further comprises a normally closed contact switch KM1-3, the safety lamp L2 is connected with a power supply, and the normally closed contact switch KM1-3 is connected with a power supply loop of the safety lamp L2 in series to send out a green reminding signal when the switch signal is not received.
8. The intelligent building security alarm system of claim 5, wherein: exhaust hole (5) department is provided with support frame (4), support frame (4) are located outdoors and with wall fixed connection, support frame (4) and exhaust fan (3) fixed connection, leave the clearance between exhaust fan (3) and the wall.
9. The intelligent building security alarm system of claim 1, wherein: air guide subassembly (1) still includes protective conduit (61), protective conduit (61) and wall fixed connection, air duct (101) wear to locate in protective conduit (61), and protective housing (62) have been had to the lateral wall integrated into one piece of protective conduit (61), and protective housing (62) are located outdoors, and protective housing (62) and protective conduit (61) intercommunication, solenoid valve (102) are located the protective housing.
10. The intelligent building security alarm system of claim 9, wherein: the one end that the gas source was kept away from in protective conduit (61) is provided with sealing washer (8), sealing washer (8) are fixed with the inner wall of protective conduit (61), sealing washer (8) are stretched out to the one end that the gas source was kept away from in air duct (101), air duct (101) support tightly with the inner wall of sealing washer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022063977.1U CN213024751U (en) | 2020-09-18 | 2020-09-18 | Intelligent building security alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022063977.1U CN213024751U (en) | 2020-09-18 | 2020-09-18 | Intelligent building security alarm system |
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| Publication Number | Publication Date |
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| CN213024751U true CN213024751U (en) | 2021-04-20 |
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| CN202022063977.1U Active CN213024751U (en) | 2020-09-18 | 2020-09-18 | Intelligent building security alarm system |
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