CN114355810A - Remote smoke prevention and discharge intelligent control system of building fire-fighting Internet of things - Google Patents
Remote smoke prevention and discharge intelligent control system of building fire-fighting Internet of things Download PDFInfo
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- CN114355810A CN114355810A CN202111632985.6A CN202111632985A CN114355810A CN 114355810 A CN114355810 A CN 114355810A CN 202111632985 A CN202111632985 A CN 202111632985A CN 114355810 A CN114355810 A CN 114355810A
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The utility model relates to a building fire control thing networking remote smoke prevention and exhaust intelligent control system, it hangs down the wall including keeping off the cigarette, keep off the cigarette and hang down the wall and keep away from the one side of furred ceiling and seted up a plurality of inlet ports, it has the blast pipe to keep off the cigarette and hang down the wall intercommunication, the blast pipe intercommunication is outdoor, it installs air exhaust device in the wall to keep off the cigarette, the one side that the inlet port was seted up to the wall that hangs down to keep off the cigarette is fixed with first smoke transducer, first smoke transducer is coupled with the smoke detection circuit who is used for controlling air exhaust device start or stops, smoke detection circuit is provided with the smog concentration threshold value, when first smoke transducer detects smog concentration and is greater than the smog concentration threshold value, smoke detection circuit sends start signal control air exhaust device and gets electric work, air exhaust device airs exhaust towards in the blast pipe when getting electric work. This application has the effect that promotes the smoke protection function that keeps off the cigarette wall that hangs down.
Description
Technical Field
The application relates to the technical field of building fire control, in particular to a remote smoke prevention and discharge intelligent control system of a building fire control Internet of things.
Background
The smoke prevention and exhaust system is a generic term for a smoke prevention system and a smoke exhaust system. The smoke prevention system is used for preventing smoke from entering the evacuation channel or preventing the smoke from diffusing; the smoke exhaust system adopts a mechanical smoke exhaust or natural ventilation mode to exhaust smoke to the outside of a building.
The smoke prevention system comprises a smoke blocking vertical wall, smoke can be effectively blocked from flowing transversely under a building ceiling, smoke diffusion is prevented, the smoke exhaust effect of a smoke area is improved, and a certain effect is achieved on guaranteeing life and property safety of people.
At present, the smoke blocking vertical wall is usually fixedly installed at the ceiling or hidden in the ceiling, when a large amount of smoke is generated by an indoor sudden fire, the smoke blocking vertical wall extends out of the ceiling and blocks the smoke, but the length of the vertical wall is limited, and when the smoke is large, the smoke is easy to overturn over the vertical wall to further spread, so that the smoke prevention function of the smoke blocking vertical wall needs to be improved.
Disclosure of Invention
In order to further promote the smoke protection function that keeps off the wall that hangs down of cigarette, this application provides a building fire control thing networking remote smoke protection intelligent control system that discharges fume.
The above-mentioned invention of this application is realized through following technical scheme:
the remote smoke prevention and discharge intelligent control system for the fire-fighting Internet of things of the building comprises a smoke-blocking vertical wall fixed at the position of a building ceiling, wherein the smoke-blocking vertical wall is a hollow box body, a plurality of air inlet holes are formed in the side, away from the ceiling, of the smoke-blocking vertical wall, the smoke-blocking vertical wall is communicated with an exhaust pipe, one end, away from the smoke-blocking vertical wall, of the exhaust pipe is used for being communicated outdoors, an air extractor is installed in the smoke-blocking vertical wall, the exhaust end of the air extractor is arranged towards the exhaust pipe, a first smoke sensor is fixed to the side, provided with the air inlet holes, of the smoke-blocking vertical wall, the first smoke sensor is coupled with a smoke detection circuit for controlling the air extractor to start or stop, the smoke detection circuit is provided with a smoke concentration threshold value, and when the first smoke sensor detects that the smoke concentration is greater than the smoke concentration threshold value, the smoke detection circuit sends a starting signal to control the air extractor to be powered on to work, and the air exhaust device exhausts air towards the exhaust pipe when being electrified to work.
By adopting the technical scheme, when fire occurs in the building, the dense smoke rises and gathers on the suspended ceiling of the building and spreads to the smoke-blocking vertical wall, the dense smoke crosses the smoke-blocking vertical wall along with the increase of the dense smoke, the first smoke sensor detects the increase of the smoke concentration nearby, the sent smoke detection signal is increased, when the smoke detection signal is greater than the smoke concentration threshold value, the smoke detection circuit sends out a starting signal to control the starting of the air extractor in the smoke-blocking vertical wall, the air extractor extracts air in the smoke-blocking vertical wall to reduce the air pressure along the smoke-blocking vertical wall, then the outside dense smoke enters the smoke-blocking vertical wall due to the air pressure difference, is blown into the exhaust pipe by the air extractor and is finally discharged to the outside, the smoke barrier vertical wall increases the possibility of absorbing smoke to prevent the smoke from further spreading beyond the smoke barrier vertical wall on the basis of blocking the smoke, and improves the smoke prevention function of the smoke barrier vertical wall.
The present application may be further configured in a preferred example to: the smog detection circuitry includes first amplifier cell of signal and first switch element, first amplifier cell coupling is in order to receive smog detected signal in first smog sensor, first amplifier cell inserts smog concentration threshold value, first amplifier cell coupling is in order to export the amplified signal when smog detected signal is greater than smog concentration threshold value in first switch element, first switch element coupling is in air exhaust device in order to export switch signal control air exhaust device when receiving the amplified signal and gets electric work.
By adopting the technical scheme, when the first smoke sensor detects the smoke concentration nearby in real time and sends the smoke detection signal to the first amplification unit in real time for comparison of analog signals, when the smoke detection signal is greater than the smoke concentration threshold value, the first amplification unit outputs the amplification signal to the first switch unit, and the first switch unit outputs a switch signal to control the starting of the air extractor after receiving the amplification signal; when the smoke detection signal is smaller than the smoke concentration threshold, the first amplifying unit does not output the amplifying signal, and the first switching unit sends out a switching signal to control the air extractor to be powered off, so that the smoke detection circuit controls the air extractor to be powered off.
The present application may be further configured in a preferred example to: the cigarette blocking device is characterized in that a driving device is fixed in the cigarette blocking vertical wall, a baffle is fixed on the driving device, two openings for the baffle to stretch out of the cigarette blocking vertical wall are formed in the face, provided with the air inlet, of the cigarette blocking vertical wall, the openings extend in the horizontal direction of the cigarette blocking vertical wall, the two openings are located on the two sides of the distribution direction of the air inlet, the driving device is used for driving the baffle to stretch out of any opening, and when the baffle is located in the cigarette blocking vertical wall, the edge of the baffle simultaneously blocks the two openings.
Through adopting above-mentioned technical scheme, great when smog concentration, the phenomenon that the wall hangs down appears turning over the fender cigarette, stretches out the opening that dense cigarette one side was kept away from to the wall that hangs down of fender cigarette through control drive arrangement drive baffle, and the baffle stretches out downwards, has prolonged the scope that keeps off the cigarette for smog is difficult to turn over the wall that hangs down of fender cigarette, and what the baffle stretched out is the opening of keeping away from dense cigarette one side, does not influence the normal of air exhaust device, inlet port promptly and discharges fume.
The present application may be further configured in a preferred example to: the driving device comprises a motor, the baffle is an arc-shaped plate, the baffle extends along the length direction of the opening, the arc-shaped opening of the baffle faces the smoke-blocking vertical wall and is provided with one side of the air inlet, the output shaft of the motor is fixedly installed with the baffle, and the baffle rotates around the motor shaft of the motor.
By adopting the technical scheme, the baffle is an arc-shaped plate, so that when the baffle is arranged in the smoke-blocking vertical wall, the edge of the baffle can shield the two openings, the pressure difference between the inside and the outside of the smoke-blocking vertical wall is larger, smoke can conveniently enter from the air inlet, and when the baffle is screwed to the lower part of the smoke-blocking vertical wall, the arc-shaped opening of the baffle faces to the direction of a large amount of smoke, so that the guiding effect is achieved, and the smoke can move to the air inlet due to the guiding effect after impacting the baffle; the baffle rotates around the motor shaft of motor, realizes that the baffle can screw out arbitrary open-ended function.
The present application may be further configured in a preferred example to: a connecting rod is coaxially rotated on a motor shaft of the motor, a plurality of connecting rods are fixed on the outer wall of the connecting rod and distributed along the length direction of the connecting rod, and one ends, far away from the connecting rod, of the connecting rods are fixed with the baffle.
Through adopting above-mentioned technical scheme, realize the output shaft drive baffle of motor through connecting rod, connecting rod and rotate, the connecting rod distributes and is fixed with the baffle along the length direction of connecting rod for the rotation of baffle is more stable.
The present application may be further configured in a preferred example to: a second smoke sensor is fixed on any side surface of the smoke baffle vertical wall along the vertical direction, a third smoke sensor is fixed on the other side surface, the second smoke sensor and the third smoke sensor are both coupled to the smoke detection circuit to output smoke detection signals, the forward rotation loop of the motor and the reverse rotation loop of the motor are both coupled to the smoke detection circuit, when the smoke detection signal output by the second smoke sensor is greater than the smoke concentration threshold value, the smoke detection circuit controls the closing of a forward rotation loop of the motor, the motor rotates forward to drive the baffle plate to extend out of the opening at one side far away from the second smoke sensor, when the smoke detection signal output by the third smoke sensor is greater than the smoke concentration threshold value, the smoke detection circuit controls the reverse loop of the motor to be closed, and the motor reverses to drive the baffle to extend out of the opening on one side far away from the third smoke sensor.
Through adopting above-mentioned technical scheme, through setting up second smoke transducer and third smoke transducer, the position that produces smog when the condition of a fire appears is in the one side that is close to second smoke transducer, so when smog turns over the fender cigarette and hangs down the wall, smog detection circuitry can the corotation of automatic control motor, make the baffle stretch out automatically and keep away from the opening of keeping away from second smoke transducer one side, keep away from the opening that appears condition of a fire one side promptly, if condition of a fire gathering smog appears in one side of third smoke transducer otherwise, then the opening of keeping away from third smoke transducer one side is stretched out to motor reversal control baffle, the automation that has realized the baffle is stretched out and is not influenced the inlet port, air exhaust device's normal exhaust.
The present application may be further configured in a preferred example to: the smoke detection circuit further comprises a second amplification unit and a third amplification unit, wherein the first logic judgment unit, the second switch unit and the third switch unit are coupled, the second amplification unit is coupled to the second smoke sensor to receive smoke detection signals, and the third amplification unit is coupled to the third smoke sensor to receive smoke detection signals;
the second amplification unit and the third amplification unit are both connected to a smoke concentration threshold value so as to output an amplification signal when the smoke detection signal is greater than the smoke concentration threshold value;
the first logic judgment unit is coupled to the first amplification unit and the second amplification unit at the same time to output a first logic judgment signal when receiving the amplification signals sent by the first amplification unit and the second amplification unit at the same time, and the second logic judgment unit is coupled to the first amplification unit and the third amplification unit at the same time to output a second logic judgment signal when receiving the amplification signals sent by the first amplification unit and the third amplification unit at the same time;
the second switch unit is coupled to the first logic judgment unit and outputs a switch signal to control the forward rotation loop of the motor to be closed when receiving the first logic judgment signal; the third switching unit is coupled to the second logic judgment unit and outputs a switching signal to control the reverse loop of the motor to be closed when receiving the second logic judgment signal.
By adopting the technical scheme, when dense smoke is gathered at one side of the second smoke sensor and the dense smoke crosses the smoke blocking vertical wall, smoke detection signals sent by the first smoke sensor and the second smoke sensor are both greater than a smoke concentration threshold value, the first amplification unit and the second amplification unit both output amplification signals to the first logic judgment unit, the first logic judgment unit outputs a first logic judgment signal to the second switch module, the second switch module outputs a switch signal to control the closing of a forward rotation circuit of the motor, so that the function of controlling the forward rotation of the motor is realized, the motor is a servo motor and is preset with a rotation amplitude, and the motor stops rotating when the rotation amplitude is reached; if dense smoke is gathered on one side of the third smoke sensor, a second logic judgment signal is sent to the third switch unit through the second logic judgment unit, so that the motor is controlled to rotate reversely by a certain range, and the function of automatically controlling the forward and reverse rotation of the motor is realized.
The present application may be further configured in a preferred example to: the first logic judgment unit comprises a first logic AND gate, the second logic judgment unit comprises a second logic AND gate, a first signal input end of the first logic AND gate is coupled to a signal output end of the second amplification unit, a second signal input end of the first logic AND gate is coupled to a signal output end of the first amplification unit, a first signal input end of the second logic AND gate is coupled to a signal output end of the third amplification unit, and a second signal input end of the second logic AND gate is coupled to a signal output end of the first amplification unit.
By adopting the technical scheme, the first logic AND gate is adopted to receive the amplification signals output by the first amplification unit and the second amplification unit, the condition that smoke is gathered at one side of the second smoke sensor and the smoke crosses the smoke blocking vertical wall can be judged, the second logic AND gate is adopted to receive the amplification signals output by the first amplification unit and the third amplification unit, the condition that smoke is gathered at one side of the third smoke sensor and the smoke crosses the smoke blocking vertical wall can be judged, when the smoke does not cross the vertical wall, the first logic AND gate does not send out a first logic judgment signal, the second logic AND gate does not send out a second logic judgment signal, and the judgment function is more accurate and reasonable.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the air in the smoke-blocking vertical wall is extracted by the air extractor, so that the air pressure along the smoke-blocking vertical wall is reduced, external dense smoke enters the smoke-blocking vertical wall due to the air pressure difference, is blown into the exhaust pipe by the air extractor and is finally discharged to the outside, the possibility of absorbing the smoke to prevent the smoke from further spreading beyond the smoke-blocking vertical wall is increased on the basis of blocking the smoke by the smoke-blocking vertical wall, and the smoke prevention function of the smoke-blocking vertical wall is improved;
2. the baffle is driven by the control driving device to extend out of the opening on the side, away from the dense smoke, of the smoke blocking vertical wall, the baffle extends downwards, the smoke blocking range is prolonged, smoke is not prone to turning over the smoke blocking vertical wall, and the opening on the side, away from the dense smoke, of the baffle extends out of the baffle, so that normal smoke exhaust of the air exhaust device and the air inlet hole is not affected;
3. the baffle is an arc-shaped plate, so that when the baffle is arranged in the smoke-blocking vertical wall, the edge of the baffle can shield the two openings, the pressure difference between the inside and the outside of the smoke-blocking vertical wall is larger, smoke can conveniently enter from the air inlet, and when the baffle is screwed to the lower part of the smoke-blocking vertical wall, the arc-shaped opening of the baffle faces to the direction of a large amount of smoke, so that the guide effect is achieved, and the smoke can move to the air inlet due to the guide effect after impacting the baffle;
4. the output shaft of the motor drives the baffle to rotate through the connecting rod and the connecting rod, and the connecting rod is distributed along the length direction of the connecting rod and fixed with the baffle, so that the baffle can rotate more stably.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic diagram of the internal structure of an embodiment of the present application;
figure 3 is a circuit diagram of a smoke detection circuit in an embodiment of the present application.
Description of reference numerals: 1. a suspended ceiling; 2. a smoke-blocking vertical wall; 21. an air inlet; 22. an opening; 3. an air extraction device; 4. an exhaust pipe; 5. a motor; 6. a baffle plate; 7. a connecting rod; 8. a connecting rod; 9. a first smoke sensor; 10. a second smoke sensor; 11. a third smoke sensor; 12. a first amplifying unit; 13. a second amplifying unit; 14. a third amplification unit; 15. a first logic judgment unit; 16. a second logic judgment unit; 17. a first switch unit; 18. a second switching unit; 19. and a third switching unit.
Detailed Description
As shown in fig. 1-3, the application discloses building fire control thing networking remote smoke prevention and exhaust intelligent control system specifically includes: including being used for fixing the cigarette that keeps off of building furred ceiling 1 department and hanging down wall 2, keep off cigarette and hang down wall 2 and for the rectangle box that cavity set up, keep off cigarette and hang down wall 2 and carry out the extension setting of horizontal direction according to the division of building space.
Referring to fig. 1 and 2, keep off the one side that the furred ceiling 1 was kept away from to cigarette hang wall 2 and seted up a plurality of inlet ports 21, a plurality of inlet ports 21 extend the setting along the horizontal direction that keeps off cigarette hang wall 2, it has blast pipe 4 to keep off cigarette hang wall 2 intercommunication, blast pipe 4 is kept away from the one end that keeps off cigarette hang wall 2 and is used for the intercommunication outdoor, keep off and install air exhaust device 3 in cigarette hang wall 2, air exhaust device 3's exhaust end sets up towards blast pipe 4, in this embodiment, the quantity of blast pipe 4 is 1, air exhaust device 3 is the fan, except this embodiment, the quantity of blast pipe 4 and air exhaust device 3's quantity can be according to specific 2 length of keeping off cigarette hang down the wall and set up.
Referring to fig. 2, a driving device is fixed in the smoke barrier hanging wall 2, the driving device is fixed with a baffle 6, the driving device comprises a motor 5, the motor 5 is fixed on one side of the smoke barrier hanging wall 2, which is provided with an air inlet 21, and is close to the edge of the smoke barrier hanging wall 2, the baffle 6 is an arc-shaped plate, the baffle 6 extends along the horizontal extension direction of the smoke barrier hanging wall 2, and the arc-shaped opening 22 of the baffle 6 faces the side of the smoke barrier hanging wall 2, which is provided with the air inlet 21; the output shaft of motor 5 and 6 fixed mounting of baffle, the coaxial rotation of motor shaft of motor 5 have connecting rod 7, and connecting rod 7 is located the below of baffle 6, and the outer wall of connecting rod 7 is fixed with a plurality of connecting rods 8, and a plurality of connecting rods 8 are along the length direction evenly distributed of connecting rod 7, and the one end that connecting rod 7 was kept away from to connecting rod 8 is fixed with baffle 6. In this embodiment, the motor 5 is a servo motor 5 and is provided with a rotation stroke in advance, and when the rotation stroke is reached, power is lost.
The side, provided with the air inlet holes 21, of the smoke barrier hanging wall 2 is provided with two openings 22 for extending the long edge edges of the baffle 6, the openings 22 extend along the horizontal direction of the smoke barrier hanging wall 2, a space is reserved between each opening 22 and each end face of the smoke barrier hanging wall 2 along the length direction, the space is used for installing the motor 5, and the two openings 22 are positioned on two sides of the distribution direction of the air inlet holes 21; when the baffle 6 is positioned in the smoke barrier vertical wall 2, two edges of the baffle 6 along the length direction block the two openings 22, and when the motor 5 rotates forwards or backwards to the limit position, part of the baffle 6 extends out of the openings 22 and is positioned below the smoke barrier vertical wall 2.
Referring to fig. 1 and 3, a first smoke sensor 9 is fixed on one surface of the smoke barrier hanging wall 2, which is provided with an air inlet 21, a second smoke sensor 10 is fixed on one side surface of the smoke barrier hanging wall 2 along the vertical direction, a third smoke sensor 11 is fixed on the other side surface of the smoke barrier hanging wall 2, and a smoke detection circuit for controlling the starting or stopping of the air extractor 3 and the forward and reverse rotation of the motor 5 is commonly coupled with the first smoke sensor 9, the second smoke sensor 10 and the third smoke sensor 11.
Referring to fig. 3, the smoke detection circuit includes a first amplification unit 12, a second amplification unit 13, a third amplification unit 14, a first logic judgment unit 15, a second logic judgment unit 16, a first switching unit 17, a second switching unit 18, and a third switching unit 19.
The first amplifying unit 12 is coupled to the first smoke sensor 9 for receiving the smoke detection signal, the first amplifying unit 12 is connected to a smoke concentration threshold, and the first amplifying unit 12 is coupled to the first switch unit 17 and the first logic determining unit 15 for outputting an amplified signal when the smoke detection signal is greater than the smoke concentration threshold.
The first amplifying unit 12 includes a first comparator N1, a first signal input terminal of the first comparator N1 is coupled as a positive phase input terminal, the positive phase input terminal is connected to the first smoke sensor 9, a second signal input terminal of the first comparator N1 is an inverted phase input terminal, the inverted phase input terminal is connected to the smoke concentration threshold, and a signal output terminal of the first comparator N1 is coupled to the first switch unit 17 and the first logic determining unit 15.
The second amplifying unit 13 is coupled to the second smoke sensor 10 for receiving the smoke detection signal, the second amplifying unit 13 is connected to the density threshold signal, and the second amplifying unit 13 is coupled to the first logic determining unit 15 for outputting the amplified signal to the first logic determining unit 15 when the smoke detection signal is greater than the smoke density threshold.
The second amplifying unit 13 includes a second comparator N2, a first signal input terminal of the second comparator N2 is a positive phase input terminal coupled to the second smoke sensor 10, a second signal input terminal of the second comparator N2 is a negative phase input terminal coupled to the smoke concentration threshold, and a signal output terminal of the second comparator N2 is coupled to the first logic determining unit 15.
The third amplifying unit 14 is coupled to the third smoke sensor 11 for receiving the smoke detection signal, the third amplifying unit 14 is connected to the density threshold signal, and the third amplifying unit 14 is coupled to the second logic determining unit 16 for outputting the amplified signal to the second logic determining unit 16 when the smoke detection signal is greater than the smoke density threshold.
The third amplifying unit 14 includes a third comparator N3, a first signal input terminal of the third comparator N3 is a positive phase input terminal coupled to the third smoke sensor 11, a second signal input terminal of the third comparator N3 is a negative phase input terminal coupled to the smoke concentration threshold, and a signal output terminal of the third comparator N3 is coupled to the second logic determining unit 16.
The first logic determining unit 15 is coupled to the first amplifying unit 12 and the second amplifying unit 13, and outputs a first logic determining signal to the second switch unit 18 when receiving the amplified signals from the first amplifying unit 12 and the second amplifying unit 13.
The first logic determining unit 15 includes a first logic and gate, a first signal input terminal of the first logic and gate is coupled to the signal output terminal of the second comparator N2, a second signal input terminal of the first logic and gate is coupled to the signal output terminal of the first comparator N1, and a signal output terminal of the first logic and gate is coupled to the second switch unit 18.
The second logic determining unit 16 is coupled to the first amplifying unit 12 and the third amplifying unit 14, and outputs a second logic determining signal to the third switching unit 19 when receiving the amplified signals from the first amplifying unit 12 and the third amplifying unit 14.
The second logic determining unit 16 comprises a second logic and gate, a first signal input terminal of the second logic and gate is coupled to the signal output terminal of the third comparator N3, a second signal input terminal of the second logic and gate is coupled to the signal output terminal of the first comparator N1, and a signal output terminal of the second logic and gate is coupled to the third switching unit 19.
The first switch unit 17 is coupled to the first amplifying unit 12 and connected in series to the power supply loop of the air extracting device 3, and outputs a switch signal to control the air extracting device 3 to be powered when the first switch unit 17 receives the amplifying signal.
The first switch unit 17 comprises an NPN-type first triode Q1 and a first relay KM1, a base of the first triode Q1 is coupled to a signal output end of the first comparator N1, a collector of the first triode Q1 is coupled to a power supply voltage VCC, an emitter of the first triode Q1 is grounded after being connected in series with a coil of the first relay KM1, the first relay KM1 comprises a normally open contact switch KM1-1 and a normally open contact switch KM1-2, the normally open contact switch KM1-1 is connected in series in a power supply loop of the air extraction device 3, one end of the normally open contact switch KM1-2 is coupled to the power supply voltage VCC, and the other end of the normally open contact switch KM1 is coupled to the coil of the first relay KM1, so that the air extraction device 3 can continuously operate once started, and emission of dense smoke can be accelerated when a fire occurs.
The second switching unit 18 is coupled to the first logic determining unit 15 and is connected in series in the forward rotation loop of the motor 5, and outputs a switching signal to control the forward rotation loop of the motor 5 to be closed when receiving the first logic determining signal.
The second switching unit 18 includes an NPN-type second transistor Q2 and a second relay KM2, a base of the second transistor Q2 is coupled to the signal output terminal of the second comparator N2, a collector of the second transistor Q2 is coupled to the power voltage VCC, an emitter of the second transistor Q2 is connected in series with a coil of the second relay KM2 and then grounded, the second relay KM2 includes a normally open contact switch KM2-1, and the normally open contact switch KM2-1 is connected in series in a forward rotation loop of the motor 5.
And a third switching unit 19 coupled to the second logic determining unit 16 and connected in series in the reverse loop of the motor 5, and outputting a switching signal to control the reverse loop of the motor 5 to be closed when receiving the second logic determining signal.
The third switching unit 19 includes an NPN-type third transistor Q3 and a third relay KM3, a base of the third transistor Q2 is coupled to the signal output terminal of the third comparator N3, a collector of the third transistor Q3 is coupled to the power voltage VCC, an emitter of the third transistor Q3 is connected in series with a coil of the third relay KM3 and then grounded, the third relay KM3 includes a normally open contact switch KM3-1, and the normally open contact switch KM3-1 is connected in series in a reverse loop of the motor 5.
The application relates to a building fire control thing networking remote smoke prevention intelligent control system's implementation principle does: when a fire occurs in the building, the dense smoke rises and gathers on the suspended ceiling 1 of the building and spreads to one side of the smoke blocking vertical wall 2 provided with the second smoke sensor 10, the dense smoke crosses the smoke blocking vertical wall 2 along with the increase of the dense smoke, the smoke concentration of the first smoke sensor 9 and the smoke blocking vertical wall 10 is increased at the moment, the smoke detection signals sent out are increased, when the smoke detection signals sent out by the first smoke sensor 9 and the second smoke sensor 10 are both larger than the smoke concentration threshold value, the first comparator N1 and the second comparator N2 both output amplification signals to the first logic AND gate, meanwhile, the first comparator N1 outputs the amplification signals to the first triode Q1, the first logic AND gate receives the amplification signals sent out by the first smoke sensor 9 and the second smoke sensor 10 at the same time and outputs a first logic judgment signal to the second triode Q2, the first triode Q1 is conducted to enable the normally open contact switches KM1-1 and KM1-2 to be closed, when the air extracting device 3 starts to work, the second triode Q2 is closed, so that the normally open contact switch KM2-1 is closed, the forward rotation loop of the motor 5 is closed, and the motor 5 works.
When the air extractor 3 works, air in the smoke-blocking vertical wall 2 is extracted to reduce the air pressure on the edge of the smoke-blocking vertical wall 2, and then external dense smoke enters the smoke-blocking vertical wall 2 due to the air pressure difference, is blown into the exhaust pipe 4 by the air extractor 3 and is finally discharged to the outside.
When the corotation return circuit of motor 5 was closed, baffle 6 rotated and stretched out and keep away from the opening 22 of second smoke transducer 10 one side, kept away from the opening 22 that appears the condition of a fire one side promptly, baffle 6's automation stretched out and do not influence inlet port 21, air exhaust device 3's normal exhaust, further played the effect that blocks and lead to smog simultaneously for air exhaust device 3's exhaust effect is better.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (8)
1. The utility model provides a building fire control thing networking remote smoke prevention and exhaust intelligent control system which characterized in that: the smoke-blocking vertical wall comprises a smoke-blocking vertical wall (2) fixed at the position of a building ceiling (1), wherein the smoke-blocking vertical wall (2) is a hollow box body, one surface, away from the ceiling (1), of the smoke-blocking vertical wall (2) is provided with a plurality of air inlet holes (21), the smoke-blocking vertical wall (2) is communicated with an exhaust pipe (4), one end, away from the smoke-blocking vertical wall (2), of the exhaust pipe (4) is used for being communicated outdoors, an air extractor (3) is installed in the smoke-blocking vertical wall (2), the exhaust end of the air extractor (3) is arranged towards the exhaust pipe (4), one surface, provided with the air inlet holes (21), of the smoke-blocking vertical wall (2) is fixed with a first smoke sensor (9), the first smoke sensor (9) is coupled with a smoke detection circuit for controlling the starting or stopping of the air extractor (3), the smoke detection circuit is provided with a smoke concentration threshold value, and when the first smoke sensor (9) detects that the smoke concentration is greater than the smoke concentration threshold value, the smoke detection circuit sends a starting signal to control the air extracting device (3) to be powered on to work, and the air extracting device (3) exhausts air towards the inside of the exhaust pipe (4) when being powered on to work.
2. The intelligent control system of claim 1, characterized in that: the smoke detection circuit comprises a first signal amplification unit (12) and a first switch unit (17), wherein the first signal amplification unit (12) is coupled to a first smoke sensor (9) to receive smoke detection signals, the first signal amplification unit (12) is connected to a smoke concentration threshold value, the first signal amplification unit (12) is coupled to the first switch unit (17) to output amplification signals when the smoke detection signals are larger than the smoke concentration threshold value, and the first switch unit (17) is coupled to the air extractor (3) to output switch signals to control the air extractor (3) to be powered to work when receiving the amplification signals.
3. The intelligent control system of claim 1, characterized in that: the utility model discloses a cigarette is put in, keep off cigarette and hang wall (2) internal fixation has drive arrangement, drive arrangement is fixed with baffle (6), keep off cigarette and hang wall (2) and set up one side that supplies inlet port (21) to stretch out two openings (22) that keep off cigarette and hang wall (2), opening (22) are followed the horizontal direction extension setting that keeps off cigarette and hang wall (2), and two openings (22) are located the both sides of a plurality of inlet port (21) distribution direction, drive arrangement is used for driving baffle (6) and stretches out arbitrary opening (22), and when baffle (6) are located the cigarette and hang down wall (2), two openings (22) of edge shutoff simultaneously of baffle (6).
4. The intelligent control system of claim 3, characterized in that: the driving device comprises a motor (5), the baffle (6) is an arc-shaped plate, the baffle (6) extends along the length direction of the opening (22), the arc-shaped opening (22) of the baffle (6) faces the smoke blocking vertical wall (2) and is provided with one side of the air inlet hole (21), the output shaft of the motor (5) is fixedly installed with the baffle (6), and the baffle (6) rotates around the motor shaft of the motor (5).
5. The intelligent control system of claim 4, characterized in that: the coaxial rotation of motor shaft of motor (5) has connecting rod (7), the outer wall of connecting rod (7) is fixed with a plurality of connecting rods (8), and a plurality of connecting rods (8) distribute along the length direction of connecting rod (7), and the one end that connecting rod (7) were kept away from in connecting rod (8) is fixed with baffle (6).
6. The intelligent control system of claim 4, characterized in that: a second smoke sensor (10) is fixed on any side surface of the smoke blocking vertical wall (2) along the vertical direction, a third smoke sensor (11) is fixed on the other side surface of the smoke blocking vertical wall, the second smoke sensor (10) and the third smoke sensor (11) are both coupled to a smoke detection circuit to output smoke detection signals, a forward rotation loop of the motor (5) and a reverse rotation loop of the motor (5) are both coupled to the smoke detection circuit, when the smoke detection signals output by the second smoke sensor (10) are greater than a smoke concentration threshold value, the smoke detection circuit controls the forward rotation loop of the motor (5) to be closed, the motor (5) rotates forward to drive the baffle plate (6) to stretch out of an opening (22) far away from one side of the second smoke sensor (10), and when the smoke detection signals output by the third smoke sensor (11) are greater than the smoke concentration threshold value, the smoke detection circuit controls the reverse rotation loop of the motor (5) to be closed, the motor (5) rotates reversely to drive the baffle (6) to extend out of the opening (22) on one side far away from the third smoke sensor (11).
7. The intelligent control system of claim 6, characterized in that: the smoke detection circuit further comprises a second amplification unit (13) and a third amplification unit (14), wherein the first logic judgment unit (15), the second logic judgment unit (16), the second switch unit (18) and the third switch unit (19) are coupled, the second amplification unit (13) is coupled to the second smoke sensor (10) to receive a smoke detection signal, and the third amplification unit (14) is coupled to the third smoke sensor to receive the smoke detection signal;
the second amplification unit (13) and the third amplification unit (14) are both connected to a smoke concentration threshold value so as to output an amplification signal when the smoke detection signal is greater than the smoke concentration threshold value;
the first logic judgment unit (15) is coupled to the first amplification unit (12) and the second amplification unit (13) at the same time to output a first logic judgment signal when receiving the amplification signals sent by the first amplification unit (12) and the second amplification unit (13) at the same time, and the second logic judgment unit (16) is coupled to the first amplification unit (12) and the third amplification unit (14) at the same time to output a second logic judgment signal when receiving the amplification signals sent by the first amplification unit (12) and the third amplification unit (14) at the same time;
the second switch unit (18) is coupled with the first logic judgment unit (15) and outputs a switch signal to control the closing of the forward rotation loop of the motor (5) when receiving the first logic judgment signal; the third switching unit (19) is coupled to the second logic judgment unit (16) and outputs a switching signal to control the reverse loop of the motor (5) to be closed when receiving the second logic judgment signal.
8. The intelligent control system of claim 7, characterized in that: the first logic judgment unit (15) comprises a first logic AND gate, the second logic judgment unit (16) comprises a second logic AND gate, a first signal input end of the first logic AND gate is coupled to a signal output end of the second amplification unit (13), an input end of the second signal generator (11) of the first logic AND gate is coupled to a signal output end of the first amplification unit (12), a first signal input end of the second logic AND gate is coupled to a signal output end of the third amplification unit (14), and a second signal input end of the second logic AND gate is coupled to a signal output end of the first amplification unit (12).
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