CN113647787A - Electric curtain fire-fighting monitoring device - Google Patents
Electric curtain fire-fighting monitoring device Download PDFInfo
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- CN113647787A CN113647787A CN202111013404.0A CN202111013404A CN113647787A CN 113647787 A CN113647787 A CN 113647787A CN 202111013404 A CN202111013404 A CN 202111013404A CN 113647787 A CN113647787 A CN 113647787A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H5/00—Devices for drawing draperies, curtains, or the like
- A47H5/02—Devices for opening and closing curtains
- A47H5/032—Devices with guiding means and draw cords
- A47H5/0325—Devices with guiding means and draw cords using electrical or electronical drive, detecting or controlling means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
Abstract
The invention discloses an electric curtain fire-fighting monitoring device, which comprises a smoke detection circuit, a motor action circuit, a switch control circuit, a smoke detection state display circuit and a time control circuit which are sequentially connected; when the time control circuit does not work, the switch control circuit is conducted to work, then the smoke detection state display circuit works, meanwhile, the smoke detection circuit and the motor action circuit are connected with a power supply to work, the smoke detection circuit detects smoke, when a fire disaster occurs to generate smoke, the smoke detection circuit outputs a high level signal to the motor action circuit, and the motor action circuit acts.
Description
Technical Field
The invention relates to the field of fire safety, in particular to an electric curtain fire monitoring device.
Background
Along with the smart home products walk into the life of people, the electric curtain also walks into the family of people, and the electric curtain can be automatically opened and closed according to the conditions set by people, such as automatic opening in daytime and automatic closing at night, or can be opened and closed at regular time, such as automatic opening in noon break, and the like, so that the life of people is facilitated.
However, if a fire occurs in a family, the electric curtain at home is in an open state, the door and window close to the curtain are not closed, after the curtain is ignited by fire, the curtain carrying fire species can fall into other families downstairs along with wind through the window, then other families can be ignited to catch fire, or downstairs families catch fire, the electric curtain at home is in an open state, the window close to the curtain is not closed, the fire climbs upwards after downstairs catch fire, the opened curtain is ignited to introduce the fire into the family, or upstairs catch fire, the fire species falling upstairs can also be introduced into the family through the curtain opened by the family, and the life and property threats are caused.
Fire safety is always a matter of attention of people, property loss of people is caused by fire accidents caused by curtains, and lives of people are seriously threatened, some electric curtains in the prior art have a fire smoke linkage function, but the linkage degree is limited, if the electric curtains are automatically closed when fire smoke exists and are opened by mistake, the fire safety accidents can be caused, and after the smoke linkage function of the electric curtains is manually closed, the electric curtains are generally required to be manually opened again and cannot be automatically opened at fixed time.
The present invention therefore provides a new solution to this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a fire-fighting monitoring device for an electric curtain, which effectively solves the problems that the smoke linkage function of the electric curtain in the prior art is limited, if the electric curtain is automatically closed and is opened by mistake after fire smoke exists, fire safety accidents can be caused, and the smoke linkage function of the electric curtain is manually closed, and generally needs to be manually opened again and cannot be automatically opened at fixed time.
The technical scheme for solving the problem is that the electric curtain fire-fighting monitoring device comprises a smoke detection circuit, a motor action circuit, a switch control circuit, a smoke detection state display circuit and a time control circuit which are sequentially connected; the time control circuit controls the working state of the switch control circuit, when the time control circuit does not work, the switch control circuit is conducted to work, the switch control circuit controls the working state of the smoke detection state display circuit, when the switch control circuit is conducted to work, the smoke detection state display circuit is controlled to work, the smoke detection state display circuit emits light, meanwhile, the smoke detection state display circuit controls the smoke detection circuit and the motor action circuit to be connected with a power supply to work, the smoke detection circuit detects smoke, amplifies detected smoke signals and compares the amplified smoke signals with a certain value, when a fire disaster generates smoke, the smoke detection circuit compares the amplified smoke signals with the certain value and then outputs high-level signals to the motor action circuit, and the motor action circuit acts;
further, the switch control circuit comprises a resistor R12, one end of a resistor R12 is respectively connected with one end of a normally open contact K2-2 of a relay K2, a port 3 and a port 1 of a double-interlock button switch SB1 and connected with a power supply VCC, the other end of a resistor R12 is connected with one end of a resistor R13, the other end of a resistor R13 is connected with a base of a triode Q3, an emitter of a triode Q3 is respectively connected with one end of the resistor R16 and a control electrode of a thyristor SCR1, the other end of the resistor R16 is connected with a cathode of the thyristor SCR1 and connected with the ground, an anode of the thyristor SCR1 is respectively connected with one end of the relay K3 and an anode of a diode D6, the other end of the relay K3 is respectively connected with a cathode of a diode D6, one end of a normally closed contact K7-2 of the relay K7, the other end of a normally closed contact K7-2 of the relay K7 is connected with the power supply VCC, a collector of the triode Q3 is respectively connected with one end of a button switch SB2, One end of a normally closed contact K1-1 of a relay K1, the other end of a normally closed contact K1-1 of a relay K1 are respectively connected with one end of a normally closed contact K3-1 of a relay K3 and one end of a normally closed contact K7-3 of a relay K7, the other end of a button switch SB2 is respectively connected with one end of a relay K2 and the anode of a diode D4, the other end of a relay K2 is respectively connected with the cathode of the diode D4 and the other end of a normally open contact K2-2 of the relay K2, the other end of the normally closed contact K3-1 of the relay K3 is connected with one end of the normally closed contact K2-1 of the relay K2, the other end of the normally closed contact K2-1 of the relay K2 is connected with one end of the relay K1 and the anode of the diode D5 respectively, and the other end of the relay K1 is connected with the cathode of the diode D5 and the port 2 of the double-interlocking push-button switch SB1 respectively.
Furthermore, the smoke detection state display circuit comprises a resistor R14, one end of a resistor R14 is connected with a power supply VCC, the other end of a resistor R14 is connected with one end of a resistor R15, the other end of the resistor R15 is connected with the base of a triode Q4, the collector of a triode Q4 is connected with the other end of a normally closed contact K7-3 of a relay K7 in the switch control circuit, the emitter of a triode Q4 is respectively connected with one end of the resistor R18, one end of a resistor R17 and one end of a resistor R19, the other end of a resistor R17 is connected with the anode of a light emitting diode D8, the other end of the resistor R18 is respectively connected with the cathode of a light emitting diode D8, the emitter of the triode Q5 is connected in parallel with the ground, the other end of the resistor R19 is connected with the base of the triode Q5, the collector of the triode Q5 is respectively connected with one end of the relay K4 and the anode of the diode D7, and the other end of the relay K4 is connected with the cathode of the diode D7 and is connected with the power supply VCC;
further, the time control circuit comprises a normally closed contact K7-1 of a relay K7, one end of a normally closed contact K7-1 of a relay K7 is connected with the negative electrode of a diode D16, one end of a relay K7, one end of a normally closed contact K7-4 of a relay K7 and one end of a resistor R24 are connected with a power VCC, the other end of a normally closed contact K7-1 of a relay K7 is connected with one end of a normally closed contact K4-2 of a relay K4, the other end of a normally closed contact K4-2 of a relay K4 is connected with the positive electrode of a diode D15, the negative electrode of a diode D15 is connected with one end of a resistor R22, the other end of a resistor R22 is connected with one end of a normally closed contact K8-1 of a relay K8, and the other end of a normally closed contact K8-1 of a relay K8 is connected with the positive electrode of a capacitor C1, one end of a resistor R21 and one end of a normally open contact K8-2 of a relay K8, One end of a normally open contact K7-5 of the relay K7 and the anode of a voltage regulator tube D11, the cathode of the voltage regulator tube D11 is connected with one end of a resistor R20, the other end of the resistor R20 is connected with the control electrode of a thyristor SCR2, the cathode of the thyristor SCR2 is connected with the ground, the anode of the thyristor SCR2 is respectively connected with one end of a relay K8 and the anode of a diode D12, the other end of the relay K8 is respectively connected with the cathode of a diode D12 and the other end of a normally closed contact K7-4 of a relay K7, the other end of the resistor R21 is respectively connected with the cathode of a capacitor C21, one end of a variable resistor R21, the adjustable end of the variable resistor R21, the cathode of the voltage regulator tube D21 and the emitter of a triode Q21 and is connected with the ground, the other end of the normally open contact K21-5 of the relay K21 is respectively connected with the other end of the normally open contact K21 and one end of the resistor R21 and the in-phase of the same-phase of the operational amplifier AR 72, the other end of the resistor R24 is respectively connected with the other end of the variable resistor R25 and the inverting input end of the operational amplifier AR3, the output end of the operational amplifier AR3 is connected with one end of the resistor R26, the other end of the resistor R26 is respectively connected with one end of the resistor R27 and the negative electrode of the voltage regulator tube D9, the positive electrode of the voltage regulator tube D9 is connected with the positive electrode of the voltage regulator tube D10, the other end of the resistor R27 is connected with the base electrode of the triode Q8, the collector electrode of the triode Q8 is respectively connected with one end of the relay K7 and the positive electrode of the diode D16, and the other end of the relay K7 is connected with the negative electrode of the diode D16 and is connected with a power supply VCC;
further, the smoke detection circuit comprises an infrared light emitting diode D1, the anode of the infrared light emitting diode D1 is connected to one end of a resistor R7 and one end of a normally open contact K4-1 of a relay K4, the other end of the normally open contact K4-1 of a relay K4 is connected to a power supply VCC, the cathode of the infrared light emitting diode D1 is connected to the collector of a phototransistor VT1, the emitter of the phototransistor VT1 is connected to one end of a resistor R1, the other end of a resistor R1 is connected to one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R3 is connected to the non-inverting input end of an operational amplifier AR1, the other end of the resistor R2 is connected to one end of a resistor R4, one end of a resistor R8 and the cathode of a voltage regulator D14 and is connected to ground, the other end of the resistor R4 is connected to one end of a resistor R5 and the inverting input end of an operational amplifier AR1, the other end of the resistor R5 is connected to the output end of an operational amplifier 1, the output end of the operational amplifier 1, the output end of the operational amplifier R5 is connected to the output end of the output terminal of the operational amplifier R634, One end of a resistor R6 and the other end of a resistor R6 are respectively connected with one end of a resistor R9 and the inverting input end of an operational amplifier AR2, the other end of the resistor R7 is respectively connected with the other end of a resistor R8 and the non-inverting input end of an operational amplifier AR2, the output end of the operational amplifier AR2 is respectively connected with the other end of the resistor R9 and one end of a resistor R30, the other end of the resistor R30 is connected with the negative electrode of a voltage stabilizing tube D13, and the positive electrode of the voltage stabilizing tube D13 is connected with the positive electrode of a voltage stabilizing tube D14;
further, the motor action circuit comprises a resistor R10, one end of the resistor R10 is respectively connected with the cathode of a voltage regulator tube D13 in the smoke detection circuit and one end of a limit switch SQ1, the other end of the resistor R10 is connected with the base of a triode Q1, the emitter of a triode Q1 is connected with the ground, the collector of the triode Q1 is respectively connected with one end of a relay K5 and the anode of a diode D2, the other end of the relay K5 is respectively connected with the cathode of a diode D2, the other end of the relay K6, the cathode of a diode D3, one end of a normally open contact K6-1 of the relay K6, the anode of an infrared light emitting diode D1 in the smoke detection circuit, one end of a normally closed contact K5-1 of the relay K5 is connected with a power supply of the electric curtain controller, the other end of a normally closed contact K5-1 of the relay K5 is connected with the electric curtain controller, the other end of the limit switch SQ1 is connected with one end of a normally open contact K5-2 of the relay K5, the other end of a normally open contact K5-2 of the relay K5 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with a base electrode of a triode Q2, a collector electrode of a triode Q2 is respectively connected with one end of a relay K6 and an anode of a diode D3, the other end of a normally open contact K6-1 of the relay K6 is connected with one end of a motor M, and the other end of the motor M is connected with the ground.
The invention has the following beneficial effects:
1. when smoke is generated in a fire, the smoke detection circuit outputs a high-level signal to the motor action circuit, the normally closed contact K5-1 of the relay K5 of the motor action circuit is disconnected, and the electric curtain controller in the prior art loses the control effect on the electric curtain, so that the electric curtain controller in the prior art is prevented from controlling the curtain to be opened when the fire occurs, and further the fire is caused through the curtain;
meanwhile, if the curtain is in an open state, the motor M1 rotates to finally drive the curtain to close, when a fire disaster happens, the curtain can be closed in time, the action speed is high, and the fire accident caused by the curtain can be further ensured not to happen;
2. the switch control circuit is provided with a double-interlocking button switch SB1 and a button switch SB2, if the control function of the invention is to be closed, the control function of the invention can be closed only by pressing the double-interlocking button switch SB1 and then pressing the button switch SB2, the control protection function of the invention is enhanced by the encryption type switch button, and the invention can not be closed randomly, thus effectively preventing the control function of the invention from being closed by the misoperation of children at home when smoke is generated, or the control function of the invention from being closed randomly when people are in a serious paralysis state, and further causing the occurrence of fire accidents through curtains;
3. after the smoke detection function of the electric curtain is manually closed, the electric curtain loses the control function, the smoke detection function of the electric curtain can be automatically recovered after the electric curtain is closed for a certain time through the time control circuit, the control function of the electric curtain can be automatically recovered, the time interval of timed restart can be adjusted by adjusting the resistance value of the variable resistor R25, and the problems that the smoke linkage function of the electric curtain in the prior art is manually closed, generally needs to be manually opened again and cannot be automatically and periodically opened are effectively solved;
4. if the light emitting diode D8 in the smoke detection state display circuit emits light, the invention is in a smoke detection state and is in a control working state, otherwise, the control function of the invention is closed, and whether the invention is in the control working state can be clearly understood through the light emitting state of the light emitting diode D8, so that the invention is clear.
Drawings
Fig. 1 is a schematic diagram of a smoke detection circuit, a motor operation circuit, a switch control circuit, and a smoke detection state display circuit.
Fig. 2 is a schematic diagram of a time control circuit.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
The invention provides a power-driven curtain fire monitoring device which is described in detail by embodiments with reference to the attached drawings.
A fire-fighting monitoring device for an electric curtain comprises a smoke detection circuit, a motor action circuit, a switch control circuit, a smoke detection state display circuit and a time control circuit which are sequentially connected; the time control circuit controls the working state of the switch control circuit, when the time control circuit does not work, the switch control circuit is conducted to work, the switch control circuit controls the working state of the smoke detection state display circuit, when the switch control circuit is conducted to work, the smoke detection state display circuit is controlled to work, the smoke detection state display circuit emits light, meanwhile, the smoke detection state display circuit controls the smoke detection circuit to be connected with the motor action circuit to work, the smoke detection circuit detects smoke, the detected smoke signal is amplified and then compared with a certain value, when a fire disaster generates smoke, the smoke detection circuit compares the amplified smoke signal with the certain value and then outputs a high-level signal to the motor action circuit, and the motor action circuit acts.
The switch control circuit comprises a resistor R12, one end of a resistor R12 is respectively connected with one end of a normally open contact K2-2 of a relay K2, a port 3 and a port 1 of a double-linkage button switch SB1 and connected with a power supply VCC, the other end of a resistor R12 is connected with one end of a resistor R13, the other end of the resistor R13 is connected with a base of a triode Q3, an emitter of a triode Q3 is respectively connected with one end of a resistor R16 and a control electrode of a thyristor SCR1, the other end of the resistor R16 is connected with a cathode of a thyristor SCR1 and connected with the ground, an anode of the thyristor SCR1 is respectively connected with one end of a relay K3 and an anode of a diode D6, the other end of the relay K3 is respectively connected with a cathode of a diode D6, one end of a normally closed contact K7-2 of a relay K7 and the other end of a normally closed contact K7-2 of a relay K7 are connected with the power supply VCC, and a collector of the triode Q3 is respectively connected with one end of a button switch SB2, One end of a normally closed contact K1-1 of a relay K1, the other end of a normally closed contact K1-1 of a relay K1 are respectively connected with one end of a normally closed contact K3-1 of a relay K3 and one end of a normally closed contact K7-3 of a relay K7, the other end of a button switch SB2 is respectively connected with one end of a relay K2 and the anode of a diode D4, the other end of a relay K2 is respectively connected with the cathode of the diode D4 and the other end of a normally open contact K2-2 of the relay K2, the other end of the normally closed contact K3-1 of the relay K3 is connected with one end of the normally closed contact K2-1 of the relay K2, the other end of the normally closed contact K2-1 of the relay K2 is respectively connected with one end of the relay K1 and the anode of the diode D5, and the other end of the relay K1 is respectively connected with the cathode of the diode D5 and the port 2 of the double-interlocking push-button switch SB 1;
the working principle of the switch control circuit is as follows: the button switch SB2 belongs to a normally closed button switch, when not pressed, the button switch SB2 belongs to a closed state, when manually pressed, the button switch SB2 is disconnected, when manually released to be pressed, the normally closed state is recovered, when the double-linkage button switch SB1 is not pressed, the normally closed contact is closed, the normally open contact is opened, and when manually pressed, the normally closed contact is opened, and the normally open contact is closed;
a normally closed contact of a double-interlocking button switch SB1, namely a contact between a port 1 and a port 2, a relay K1, a diode D5, a normally closed contact K2-1 of a relay K2, a normally closed contact K3-1 of a relay K3 and a normally closed contact K7-3 of a relay K7 form a path 1, and a normally open contact of a double-interlocking button switch SB1, namely a contact between a port 3 and a port 4, a normally open contact K2-2 of the relay K2, a relay K2, a diode D4 and a button switch SB2 form a path 2;
normally, in an initial state, the double-interlocking button switch SB1 and the button switch SB2 are not pressed, because the normally open contact of the double-interlocking button switch SB1 is disconnected, the relay K2 is not electrified, the normally open contact K2-2 of the relay K2 is disconnected, namely the path 2 is disconnected, the triode Q3 is not connected, the relay K3 is not electrified, the normally closed contact K3-1 of the relay K3 is closed, the normally closed contact K7-3 of the relay K7 is closed, and the path 1 is connected;
firstly, pressing the double-interlocking button switch SB1, disconnecting the passage 1, closing the normally open contact of the double-interlocking button switch SB1, namely, connecting the port 3 and the port 4, electrifying the relay K2, closing the normally open contact K2-2 of the relay K2, connecting the passage 2 and realizing self-locking, after releasing the double-interlocking button switch SB1, keeping the passage 2 connected, disconnecting the passage 1 and not connecting the passage 1 because the normally closed contact K2-1 of the relay K2 is disconnected, simultaneously connecting the triode Q3, connecting the thyristor SCR1, electrifying the relay K3, disconnecting the normally closed contact K3-1 of the relay K3, and combining the above, after pressing the double-interlocking button switch SB1 and releasing, connecting the passage 1 and connecting the passage 2;
then, the button switch SB2 is pressed again, the relay K2 is not powered, the normally open contact K2-2 of the relay K2 is disconnected, the self-locking state of the passage 2 is broken, the passage 2 is not connected, after the button switch SB2 is released, the passage 2 is kept not connected, because the relay K3 is powered, the normally closed contact K3-1 of the relay K3 is disconnected, the passage 1 is not connected, and in sum, after the double interlocking button switch SB1 is pressed and released, the button switch SB2 is pressed again, and the passage 1 and the passage 2 are not connected.
The smoke detection state display circuit comprises a resistor R14, one end of a resistor R14 is connected with a power supply VCC, the other end of a resistor R14 is connected with one end of a resistor R15, the other end of the resistor R15 is connected with the base electrode of a triode Q4, the collector electrode of a triode Q4 is connected with the other end of a normally closed contact K7-3 of a relay K7 in a switch control circuit, the emitter electrode of a triode Q4 is respectively connected with one end of the resistor R18, one end of the resistor R17 and one end of the resistor R19, the other end of a resistor R17 is connected with the anode of a light emitting diode D8, the other end of the resistor R18 is respectively connected with the cathode of the light emitting diode D8 and the emitter electrode of the triode Q5 and is connected with the ground in parallel, the other end of the resistor R19 is connected with the base electrode of a triode Q5, the collector electrode of a triode Q5 is respectively connected with one end of a relay K4 and the anode of a diode D7, and the other end of a relay K4 is connected with the cathode of a diode D7 and connected with the power supply VCC;
the working principle of the smoke detection state display circuit is as follows: when a path 1 or a path 2 in the switch control circuit is switched on, the triode Q4 is switched on, the light emitting diode D8 emits light, the relay K4 is powered on, when the path 1 and the path 2 are not switched on, the triode Q4 is not switched on, the light emitting diode D8 does not emit light, the relay K4 is not powered on, the light emitted by the light emitting diode D8 can be green light, the light emitted by the light emitting diode D8 represents that the invention is in a detection working state for fire smoke, the relay K4 is powered on, the normally closed contact K4-1 of the relay K4 is closed, the smoke detection circuit and the motor action circuit are switched on to a power supply VCC, meanwhile, the normally closed contact K4-2 of the relay K4 is switched off, and the time control circuit does not work.
The time control circuit comprises a normally closed contact K7-1 of a relay K7, one end of a normally closed contact K7-1 of the relay K7 is connected with the negative electrode of a diode D16, one end of a relay K7, one end of a normally closed contact K7-4 of a relay K7 and one end of a resistor R24 and is connected with a power supply VCC, the other end of a normally closed contact K7-1 of the relay K7 is connected with one end of a normally closed contact K4-2 of a relay K4, the other end of a normally closed contact K4-2 of the relay K4 is connected with the positive electrode of a diode D4, the negative electrode of the diode D4 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with one end of a normally closed contact K4-1 of the relay K4, the other end of the normally closed contact K4-1 of the relay K4 is connected with the positive electrode of a capacitor C4, one end of a resistor R4, one end of the normally open contact K4-5 of the normally open contact K4, The anode of a voltage regulator tube D11, the cathode of a voltage regulator tube D11 is connected with one end of a resistor R20, the other end of the resistor R20 is connected with the control electrode of a thyristor SCR2, the cathode of the thyristor SCR2 is connected with the ground, the anode of a thyristor SCR2 is respectively connected with one end of a relay K8 and the anode of a diode D12, the other end of a relay K8 is respectively connected with the cathode of a diode D12 and the other end of a normally closed contact K7-4 of a relay K7, the other end of a resistor R21 is respectively connected with the cathode of a capacitor C1, one end of a variable resistor R25, the adjustable end of the variable resistor R25, the cathode of the voltage regulator tube D25 and the emitter of a triode Q25 and connected with the ground, the other end of a normally open contact K25-5 of the relay K25 is respectively connected with the other end of a normally open contact K25 AR2 of the relay K25 and one end of the resistor R25, the other end of the resistor R25 is connected with the in-phase input end of the operational amplifier R25, and the other end of the operational amplifier 25 is connected with the same phase of the operational amplifier R25, The inverting input end of the operational amplifier AR3, the output end of the operational amplifier AR3 is connected with one end of a resistor R26, the other end of the resistor R26 is connected with one end of a resistor R27 and the negative electrode of a voltage regulator tube D9 respectively, the positive electrode of a voltage regulator tube D9 is connected with the positive electrode of a voltage regulator tube D10, the other end of the resistor R27 is connected with the base electrode of a triode Q8, the collector electrode of the triode Q8 is connected with one end of a relay K7 and the positive electrode of a diode D16 respectively, and the other end of the relay K7 is connected with the negative electrode of the diode D16 and is connected with a power supply VCC;
the working principle of the time control circuit is as follows: when a double-linkage button switch SB1 in the switch control circuit is pressed, the button switch SB2 is pressed again, a channel 1 and a channel 2 in the switch control circuit are not connected, a triode Q4 in the smoke detection state display circuit is not connected, a light emitting diode D8 does not emit light, a relay K4 does not get electrified, a normally closed contact K4-2 of the relay K4 is closed, a normally closed contact K7-1 of the relay K7 is also closed, a power supply VCC charges a capacitor C1 through the normally closed contact K7-1 of the closed relay K7, the normally closed contact K4-2 of the closed relay K4, a diode D15, a resistor R22 and the normally closed contact K8-1 of the closed relay K8, the voltage on the capacitor C1 is increased along with the prolonging of the charging time, a thyristor D11 is broken down, an SCR2 is connected, the relay K8 is electrified, and the normally open contact K8-2 of the relay K8 is closed, the voltage on the capacitor C1 enters the non-inverting input end of the operational amplifier AR3 through the normally open contact K8-2 of the closed relay K8, the voltage is compared with the voltage at the inverting input end of the operational amplifier AR3, the operational amplifier AR3 outputs a high level signal, the voltage regulator tube D9 and the voltage regulator tube D10 stabilize the high level signal, the triode Q8 is conducted, the relay K7 is electrified, at the moment, the normally closed contact K7-2 of the relay K7 in the switch control circuit is disconnected, the relay K3 is not electrified, the normally closed contact K3-1 of the relay K3 is closed, the normally closed contact K7-3 of the relay K7 is disconnected, namely, the passage 1 and the passage 2 in the switch control circuit are not conducted, the electricity of the relay K4 in the smoke detection state display circuit is not electrified, after the relay K7 is electrified, the normally closed contact K7-4 of the relay K7 is disconnected, so that the relay K8 is not electrified, a normally closed contact K8-1 of a relay K8 is disconnected, a power supply VCC does not charge a capacitor C1, the capacitor C1 discharges through a resistor R21 and an internal circuit of an operational amplifier AR3, the voltage on the capacitor C1 is reduced along with the prolonging of the discharging time, the operational amplifier AR3 outputs a low level signal, a triode Q8 is not conducted, a relay K7 is not electrified, a normally closed contact K7-3 of a relay K7 in a switch control circuit is closed, a passage 1 is conducted, and then the electricity of the relay K4 in a smoke detection state display circuit is detected;
in summary, normally, the double-interlock button switch SB1 and the button switch SB2 are not pressed, the normally closed contact of the double-interlock button switch SB1 in the switch control circuit is closed, the normally open contact is opened, the button switch SB2 is closed, the path 1 is on, and the path 2 is not on;
after the double-linkage button switch SB1 is pressed alone, a path 1 in the switch control circuit is not conducted, and a path 2 is conducted;
when the button switch SB2 is pressed alone, the path 1 in the switch control circuit is conducted, and the path 2 is not conducted;
firstly, after the button switch SB2 is pressed, the double-linkage button switch SB1 is pressed, the channel 1 is not conducted, and the channel 2 is conducted;
as long as one of the passage 1 and the passage 2 in the switch control circuit is conducted, the triode Q4 in the smoke detection state display circuit is conducted, the light-emitting diode D8 emits light, the relay K4 is electrified, the normally closed contact K4-2 of the relay K4 in the time control circuit is disconnected, and the time control circuit does not perform timing operation;
only when the double-linkage button switch SB1 is pressed correctly firstly and then the button switch SB2 is pressed, the channel 1 and the channel 2 in the switch control circuit are not conducted, the light emitting diode D8 in the smoke detection state display circuit is not lighted, the relay K4 is not powered, the normally closed contact K4-2 of the relay K4 in the time control circuit is closed, the time control circuit carries out timing operation, after a certain time, the timing is finished, the channel 1 in the switch control circuit is conducted, the channel 2 is not conducted, the switch control circuit recovers the initial state, meanwhile, after the time control circuit is timed, the triode Q4 automatically connects the channel 1 in the switch control circuit, the triode Q4 is conducted, the light emitting diode D8 emits light again, and the relay K4 is powered again.
The smoke detection circuit comprises an infrared light emitting diode D1, wherein the anode of the infrared light emitting diode D1 is respectively connected with one end of a resistor R7 and one end of a normally open contact K4-1 of a relay K4, the other end of the normally open contact K4-1 of a relay K4 is connected with a power supply VCC, the cathode of the infrared light emitting diode D1 is connected with the collector of a phototriode VT1, the emitter of the phototriode VT1 is connected with one end of the resistor R1, the other end of the resistor R1 is respectively connected with one end of the resistor R2 and one end of a resistor R3, the other end of the resistor R3 is connected with the non-inverting input end of an operational amplifier AR1, the other end of the resistor R2 is respectively connected with one end of a resistor R4, one end of a resistor R8 and the cathode of a voltage stabilizing tube D14 and is grounded, the other end of the resistor R4 is respectively connected with one end of the resistor R5 and the inverting input end of an operational amplifier AR1, and the other end of the operational amplifier R5 is respectively connected with the output end of an operational amplifier 1, One end of a resistor R6 and the other end of a resistor R6 are respectively connected with one end of a resistor R9 and the inverting input end of an operational amplifier AR2, the other end of the resistor R7 is respectively connected with the other end of a resistor R8 and the non-inverting input end of an operational amplifier AR2, the output end of the operational amplifier AR2 is respectively connected with the other end of the resistor R9 and one end of a resistor R30, the other end of the resistor R30 is connected with the negative electrode of a voltage stabilizing tube D13, and the positive electrode of the voltage stabilizing tube D13 is connected with the positive electrode of a voltage stabilizing tube D14;
the working principle of the smoke detection circuit is as follows: when a relay K4 in the smoke detection state display circuit is electrified, a normally open contact K4-1 of the relay K4 is closed, the smoke detection circuit is connected with a power supply VCC, light emitted by an infrared light emitting diode D1 is received by a phototriode VT1, when no smoke exists in the environment, the resistance of the phototriode VT1 after receiving the light is small, when a fire occurs, smoke exists in the environment, the phototriode VT1 receives little light emitted by the infrared light emitting diode D1, namely the receiving light is blocked, the resistance of the phototriode VT1 is large, a smoke signal detection circuit is formed by the infrared light emitting diode D1, the phototriode VT1, a resistor R1 and a resistor R2, an operational amplifier AR1, a resistor R3, a resistor R4 and a resistor R5 are used for forming an in-phase amplification circuit, the in-phase amplification circuit amplifies a smoke signal output by the smoke signal detection circuit, and the operational amplifier AR2, the resistor R6, the resistor R7, the resistor R8 and the resistor R8, The resistor R9 forms a differential amplifying circuit, the differential amplifying circuit compares the amplified smoke signal with a certain value, when smoke is generated in fire, the differential amplifying circuit outputs a high level signal, when no smoke is generated in fire, the differential amplifying circuit outputs a low level signal, and the resistor R30, the voltage regulator tube D13 and the voltage regulator tube D14 form a voltage regulator circuit to regulate the voltage of the signal output by the differential amplifying circuit.
The motor action circuit comprises a resistor R10, one end of a resistor R10 is respectively connected with the cathode of a voltage regulator tube D13 and one end of a limit switch SQ1 in the smoke detection circuit, the other end of the resistor R10 is connected with the base electrode of a triode Q1, the emitter electrode of a triode Q1 is connected with the ground, the collector electrode of a triode Q1 is respectively connected with one end of a relay K5 and the anode of a diode D2, the other end of the relay K5 is respectively connected with the cathode of a diode D2, the other end of the relay K6, the cathode of a diode D3, one end of a normally-open contact K6-1 of the relay K6 and the anode of an infrared light emitting diode D1 in the smoke detection circuit, one end of a normally-closed contact K5-1 of the relay K5 is connected with an electric curtain controller power supply, the other end of a normally-closed contact K5-1 of the relay K5 is connected with an electric curtain controller, the other end of the limit switch SQ1 is connected with one end of a normally-open contact K5-2 of the relay K5, the other end of a normally open contact K5-2 of the relay K5 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with a base electrode of a triode Q2, a collector electrode of a triode Q2 is respectively connected with one end of a relay K6 and the anode of a diode D3, the other end of a normally open contact K6-1 of the relay K6 is connected with one end of a motor M, and the other end of the motor M is connected with the ground;
the working principle of the motor action circuit is as follows: when a relay K4 in the smoke detection state display circuit is electrified, a normally open contact K4-1 of a relay K4 is closed, a motor action circuit is connected with a power supply VCC, the motor action circuit receives a high-low level signal output by a differential amplification circuit in the smoke detection circuit, when the high level signal is received, a triode Q1 is connected, the relay K5 is electrified, a normally closed contact K5-1 of a relay K5 is disconnected, namely, the power supply of the electric curtain controller is disconnected with the electric curtain controller (in the prior art, the motor in the electric curtain moves to drive a transmission rope, the transmission rope drives a curtain and an impact pressing block to move towards a certain direction, when the impact pressing block touches a limit switch, the motor stops rotating, the curtain can be controlled to be opened and closed according to the rotating direction of the motor, in the prior art, the rotation of the motor and the rotating direction of the motor are controlled by the electric curtain controller, further controlling the opening and closing of the curtain, the electric control curtain controller can work to realize the control of the motor only by switching on the power supply of the electric curtain controller, which is the prior art and is not described in detail herein, the automatic control of the electric curtain controller to the electric curtain in the prior art does not work (namely, the electric curtain in the prior art mentioned in the background art automatically performs the opening and closing of the curtain according to the conditions set by people and does not work, such as the function of automatically opening in the daytime and automatically closing in the evening or the function of opening at regular time and automatically opening in the noon break, and the like), when smoke is generated in fire, the differential amplifying circuit in the smoke detection circuit outputs a high level signal, and at the moment, if the electric curtain is closed, the limit switch SQ1 is disconnected by the pressure of the impact block, the triode Q2 is not powered, and the relay K6 is not powered, normally open contact K6-1 of relay K6 breaks off, motor M1 does not work, if the electric window curtain is opened at this moment, limit switch SQ1 is not in the closed state by the pressure of striking block, normally open contact K5-2 of relay K5 is also closed, triode Q2 is conducted by high level signal, relay K6 gets electricity, normally open contact K6-1 of relay K6 is closed, motor M1 rotates, drive rope moves, drive rope drives window curtain, striking block moves, when striking block touches limit switch SQ1, motor stall, window curtain is closed (striking block can carry out assorted selection according to the model of the limit switch selected for use, relevant striking block, limit switch position installation are the content of prior art part, no detailed description is given here).
The invention described above with reference to the accompanying drawings, when in particular use:
normally, a double-linkage button switch SB1 and a button switch SB2 in a switch control circuit are not pressed, a passage 1 is connected, a triode Q4 in a smoke detection state display circuit is connected with the passage 1, a triode Q4 is connected, and a light-emitting diode D8 emits light to indicate that the smoke detector is in a detection working state for fire smoke, a relay K4 is electrified, a normally open contact K4-1 of a relay K4 is closed, a smoke detection circuit and a motor action circuit are connected with a power supply VCC, meanwhile, a normally closed contact K4-2 of the relay K4 is disconnected, and a time control circuit does not perform timing operation;
if no smoke is generated by fire, the smoke detection circuit outputs a low level signal to the motor action circuit, the relay K5 is not powered, the normally closed contact K5-1 of the relay K5 is closed, the power supply of the motor curtain controller is connected with the electric curtain controller, namely, the motor controller in the prior art works, the motor is controlled by the electric curtain controller in the prior art, if smoke is generated by fire, the smoke detection circuit outputs a high level signal to the motor action circuit, the relay K5 is powered, the normally closed contact K5-1 of the relay K5 is disconnected, the power supply of the electric curtain controller is not connected with the electric curtain controller, namely, the motor is not controlled by the electric curtain controller in the prior art, if the electric curtain is in a closed state, the SQ1 is disconnected, the motor M1 does not rotate, and if the electric curtain is in an open state, the limit switch SQ1 is closed, the triode Q2 is conducted, the relay K6 is electrified, the normally open contact K6-1 of the relay K6 is closed, the motor M1 rotates to drive the transmission rope to move, the transmission rope drives the curtain and the impact block to move, when the impact block moves to a position where the impact block touches the limit switch SQ1, the limit switch is pressed to be disconnected, the motor M1 stops rotating, and the curtain is in a closed state;
usually, the smoke detection circuit is in a working state for detecting smoke, when a fire occurs, the smoke detection circuit outputs a high level signal, the high level signal enables a triode Q1 in the motor action circuit to be conducted, a relay K5 is electrified, a normally closed contact K5-1 of the relay K5 is disconnected, the electric curtain controller in the prior art is not connected with a power supply of the electric curtain controller, namely, the electric curtain controller in the prior art mentioned in the background technology can not control the motor to rotate according to conditions set by people, and further automatically controls the opening and closing operation of the curtain, such as automatic opening in daytime and automatic closing in night, or the timed opening and closing function can not be realized, such as the automatic opening function in noon break can not be realized, and the aim is to prevent the electric curtain from being controlled by the electric curtain controller in the prior art when the fire occurs, when the curtain is opened, the limit switch SQ1 is closed, the normally open contact K5-2 of the relay K5 is closed, the triode Q2 is conducted, the relay K6 is electrified, the normally open contact K6-1 of the relay K6 is closed, the motor M1 rotates to drive the curtain to be closed, the fire hazard caused by the opened curtain is prevented, and the life and property safety of people is ensured;
if smoke is generated in a fire, the motor action circuit acts to close the curtain, and meanwhile, the electric curtain controller in the prior art loses the control on the opening and closing of the electric curtain, and the control function on the motor is lost until no smoke is generated in the fire, and meanwhile, the electric curtain controller in the prior art is connected with the power supply of the electric curtain controller, so that the control function of the electric curtain controller in the prior art on the opening and closing of the curtain is realized, and the aim of enabling the curtain to be always in a closed state before the danger of smoke generated in the fire is relieved is achieved, and the occurrence of fire caused by the curtain is prevented;
in order to release the control function of the present invention, after the double-interlock button switch SB1 is manually pressed and the button switch SB2 is pressed again, the circuit 1 and the circuit 2 in the switch control circuit are not connected, the transistor Q4 in the smoke detection state display circuit is not connected, and the light emitting diode D8 does not emit light, which means that the present invention does not detect smoke, the relay K4 is not powered, the normally open contact K4-1 of the relay K4 is disconnected, the smoke detection circuit and the motor operating circuit are not connected to the power source VCC and do not work, the present invention does not control the motor, and loses the control of the electric curtain controller in the prior art, and the operation of pressing the double-interlock button switch SB1 alone, pressing the button switch SB2 alone, pressing the button switch SB2 first, and then pressing the double-interlock button switch SB1 does not cause the present invention to lose control function, the control function of the invention is prevented from being closed by misoperation of children at home when smoke is generated in a fire, or the control function of the invention can be closed randomly when people are paralyzed to generate smoke, the control function of the invention can be closed only by a correct button switch sequence, so that the applied protection function is enhanced and can not be closed randomly, and the problem that fire safety accidents are caused if an electric curtain is automatically closed and then is opened by mistake when the smoke is generated in the fire in the prior art is effectively solved;
if the light emitting diode D8 of the invention emits light, the invention is in a smoke detection state and the invention is in a working state of control action, otherwise, the control action of the invention is closed;
if a person firstly presses the double-linkage button switch SB1 and then presses the button switch SB2, the light emitting diode D8 does not emit light, the invention loses the control function, the relay K4 does not get powered, the normally closed contact K4-2 of the relay K4 is closed, the time control circuit carries out timing operation, after a certain time, the timing is finished, the passage 1 in the switch control circuit is conducted, the triode Q4 in the smoke detection state display circuit is communicated with the passage 1, the triode Q4 is powered, the light emitting diode D8 emits light again, the relay K4 is powered again, the normally open contact K4-1 of the relay K4 is closed, the smoke detection circuit and the motor action circuit are communicated with the power VCC for work, namely, the smoke detection function of the invention is recovered, the control function of the invention is recovered, after the smoke detection function of the invention is artificially closed, the invention loses the control function, through the time control circuit of the invention, after the electric curtain is closed for a certain time, the smoke detection function can be automatically recovered, the control function of the electric curtain can be automatically recovered, the time interval of timed restart can be adjusted by adjusting the resistance value of the variable resistor R25, and the problems that the smoke linkage function of the electric curtain in the prior art is manually closed, and the electric curtain usually needs to be manually opened again and cannot be automatically opened at a fixed time are effectively solved;
the invention can be installed in the place where the smoke is collected in the room, such as the place where the air is not easy to circulate, such as the corner of a wall.
The invention has the following beneficial effects:
1. when smoke is generated in a fire, the light emitted by the infrared light emitting diode D1 received by the photoresistor VT1 is reduced, the internal resistance is increased, the operational amplifier AR2 outputs a high-level signal to be transmitted to the motor action circuit, a triode Q1 in the motor action circuit is switched on, a normally closed contact K5-1 of a relay K5 is switched off, and the electric curtain controller in the prior art loses the control effect on the electric curtain, so that the electric curtain controller in the prior art is prevented from controlling the curtain to be opened when the fire happens, and further the fire accident is caused by the curtain;
meanwhile, the position condition of the electric curtain can be detected by using the limit switch SQ1, when smoke is generated in a fire, if the curtain is in an open state, the limit switch SQ1 is closed, a high level signal output by the operational amplifier AR2 enables the triode Q2 to be conducted, the normally open contact K6-1 of the relay K6 is closed, the motor M1 rotates to drive the curtain to move, the curtain is finally closed, when the fire occurs, the curtain can be closed timely, the action speed is high, and the accident that the fire is caused by the curtain is further ensured not to occur;
2. the switch control circuit is provided with a double-interlocking button switch SB1 and a button switch SB2, and if the control action of the invention is to be closed, the control action of the invention can be closed only by pressing the double-interlocking button switch SB1 and then pressing the button switch SB2, and only pressing the double-interlocking button switch SB1 alone, either pressing only push switch SB2 alone, or pressing push switch SB2 first, followed by pressing double-interlock push switch SB1, does not deactivate the control action of the present invention, the encrypted switch button enhances the control protection effect of the application, can not be closed randomly, can effectively prevent the control function of the invention from being closed by the misoperation of children at home when smoke is generated, or the control function of the invention is closed at will when people are paralyzed to the great intentions, thereby causing the fire accident through the curtain;
3. after the control function of the invention is closed, the time control circuit starts to operate at fixed time, the power supply VCC charges the capacitor C1 through the diode D15 and the resistor R22, the capacitor C1 charges the electric appliance K8 after the electric appliance K1 reaches a certain voltage, the normally open contact K8-2 of the relay K8 is closed, further the electricity of the relay K7 is supplied, the normally closed contact K7-4 of the relay K7 is disconnected, the power supply VCC stops charging the capacitor C1, the capacitor C1 discharges through the resistor R21 and the internal circuit of the operational amplifier AR3, after a certain time, the voltage discharged by the capacitor C1 is lower than a certain value, the fixed time is ended, the relay K7 does not get electricity, the contact K7-3 of the relay K7 is closed, the passage 1 in the switch control circuit is conducted, the light-emitting diode D8 in the smoke detection state display circuit lights, the relay K4 gets electricity, the smoke detection circuit and the motor operation circuit get electricity to operate, the smoke detection function of the invention is recovered, the control function of the invention is recovered, after the smoke linkage detection function of the invention is manually closed, the invention loses the control function, after closing for a certain time, the smoke detection function of the invention can be automatically recovered, the control function of the invention can be automatically recovered, and the time interval of the timed restart can be adjusted by adjusting the resistance value of the variable resistor R25, thereby effectively solving the problems that the smoke linkage function of the electric curtain in the prior art is manually closed, usually needs to be manually opened again and can not be automatically opened at a fixed time;
4. if the light-emitting diode D8 in the smoke detection state display circuit emits light, the smoke detection state display circuit shows that the smoke detection circuit is in a smoke detection state and the smoke detection circuit is in a working state of control action, otherwise, the control action of the smoke detection circuit is turned off, and whether the smoke detection circuit is in the state of control action can be clearly understood through the light-emitting state of the light-emitting diode D8;
the invention effectively solves the problems that the smoke linkage function of the electric curtain in the prior art is limited, if the electric curtain is opened by mistake after being automatically closed when fire smoke exists, fire safety accidents can be caused, and the smoke linkage function of the electric curtain is closed by people, and generally needs to be opened again by people and cannot be automatically opened at fixed time.
Claims (6)
1. A fire-fighting monitoring device for an electric curtain is characterized by comprising a smoke detection circuit, a motor action circuit, a switch control circuit, a smoke detection state display circuit and a time control circuit which are sequentially connected;
the time control circuit controls the working state of the switch control circuit, when the time control circuit does not work, the switch control circuit is conducted to work, the switch control circuit controls the working state of the smoke detection state display circuit, when the switch control circuit is conducted to work, the smoke detection state display circuit is controlled to work, the smoke detection state display circuit emits light, meanwhile, the smoke detection state display circuit controls the smoke detection circuit to be connected with the motor action circuit to work, the smoke detection circuit detects smoke, the detected smoke signal is amplified and then compared with a certain value, when a fire disaster generates smoke, the smoke detection circuit compares the amplified smoke signal with the certain value and then outputs a high-level signal to the motor action circuit, and the motor action circuit acts.
2. The fire monitoring device of the motorized window treatment as claimed in claim 1, wherein the switch control circuit comprises a resistor R12, one end of a resistor R12 is connected to one end of a normally open contact K2-2 of a relay K2, one end of a double-interlock button switch SB1 and the port 1 respectively and is connected to the power source VCC, the other end of a resistor R12 is connected to one end of a resistor R13, the other end of a resistor R13 is connected to a base of a transistor Q3, an emitter of the transistor Q3 is connected to one end of a resistor R16 and a control electrode of a thyristor SCR 737 1 respectively, the other end of a resistor R16 is connected to a cathode of the SCR1 and is grounded, an anode of the thyristor SCR1 is connected to one end of a relay K3 and an anode of a diode D6 respectively, the other end of a relay K3 is connected to a cathode of a diode D6, one end of a normally closed contact K7-2 of a relay K7 and the other end of a normally closed contact K7-2 of a relay K7 are connected to the power source VCC, the collector of a triode Q3 is respectively connected with one end of a button switch SB2 and one end of a normally closed contact K1-1 of a relay K1, the other end of a normally closed contact K1-1 of a relay K1 is respectively connected with one end of a normally closed contact K3-1 of a relay K3 and one end of a normally closed contact K7-3 of a relay K7, the other end of the button switch SB2 is respectively connected with one end of a relay K2 and the anode of a diode D4, the other end of the relay K2 is respectively connected with the cathode of a diode D4, the other end of a normally open contact K2-2 of a relay K2, the port 4 of a double-linked button switch SB1, the other end of a normally closed contact K3-1 of a relay K3 is connected with one end of a normally closed contact K2-1 of a relay K2, the other end of a normally closed contact K2-1 of a relay K2 is respectively connected with one end of a relay K1 and the anode of a diode D5, and the other end of the relay K1 is respectively connected with the cathode of a diode D5, Port 2 of push button switch SB1 is double interlocked.
3. The fire monitoring device of the electric curtain as claimed in claim 1, wherein the smoke detection status display circuit comprises a resistor R14, one end of the resistor R14 is connected to the power VCC, the other end of the resistor R14 is connected to one end of the resistor R15, the other end of the resistor R15 is connected to the base of a transistor Q4, the collector of the transistor Q4 is connected to the other end of the normally closed contact K7-3 of the relay K7 in the switch control circuit, the emitter of the transistor Q4 is connected to one end of the resistor R18, one end of the resistor R17 and one end of the resistor R19, the other end of the resistor R17 is connected to the anode of the led D8, the other end of the resistor R18 is connected to the cathode of the led D8 and the emitter of the transistor Q5 and is connected to the ground, the other end of the resistor R19 is connected to the base of the transistor Q5, the collector of the transistor Q5 is connected to one end of the relay K4 and the anode of the diode D7, the other end of the relay K4 is connected to the cathode of the diode D7 and to the power supply VCC.
4. The fire-fighting monitoring device for the electric curtain as claimed in claim 1, wherein the time control circuit comprises a normally closed contact K7-1 of a relay K7, one end of a normally closed contact K7-1 of a relay K7 is connected with the cathode of a diode D16, one end of a relay K7, one end of a normally closed contact K7-4 of a relay K7, one end of a resistor R24 is connected with a power VCC, the other end of the normally closed contact K7-1 of a relay K7 is connected with one end of a normally closed contact K4-2 of a relay K4, the other end of the normally closed contact K4-2 of a relay K4 is connected with the anode of a diode D15, the cathode of a diode D15 is connected with one end of a resistor R22, the other end of a resistor R22 is connected with one end of a normally closed contact K8-1 of a relay K8, and the other end of the normally closed contact K8-1 of a relay K8 is connected with the anode of a capacitor C1, One end of a resistor R21, one end of a normally open contact K8-2 of a relay K8, one end of a normally open contact K7-5 of the relay K7 and the anode of a voltage regulator tube D11, the cathode of the voltage regulator tube D11 is connected with one end of a resistor R20, the other end of the resistor R20 is connected with the control electrode of a thyristor SCR2, the cathode of the thyristor SCR2 is connected with the ground, the anode of the thyristor SCR2 is respectively connected with one end of the relay K8 and the anode of a diode D12, the other end of the relay K8 is respectively connected with the cathode of the diode D12 and the other end of a normally closed contact K12-4 of the relay K12, the other ends of the resistors R12 and the constant open contact K12-5 of the relay K12 are respectively connected with the cathode of the capacitor C12, one end of the variable resistor R12, the adjustable end of the variable resistor R12, the cathode of the voltage regulator tube D12 and the emitter of the triode Q12, the normally open contact K12-5 is connected with the ground in parallel connection, One end of a resistor R23, the other end of the resistor R23 is connected with the non-inverting input end of an operational amplifier AR3, the other end of the resistor R24 is respectively connected with the other end of a variable resistor R25 and the inverting input end of an operational amplifier AR3, the output end of the operational amplifier AR3 is connected with one end of a resistor R26, the other end of the resistor R26 is respectively connected with one end of a resistor R27 and the negative electrode of a voltage regulator tube D9, the positive electrode of the voltage regulator tube D9 is connected with the positive electrode of the voltage regulator tube D10, the other end of the resistor R27 is connected with the base electrode of a triode Q8, the collector electrode of the triode Q8 is respectively connected with one end of a relay K7 and the positive electrode of a diode D16, and the other end of the relay K7 is connected with the negative electrode of a diode D16 and is connected with a power supply VCC.
5. The fire monitoring device of the electric curtain as claimed in claim 1, wherein the smoke detecting circuit comprises an infrared led D1, the positive electrode of the infrared led D1 is connected to one end of a resistor R7 and one end of a normally open contact K4-1 of a relay K4, the other end of the normally open contact K4-1 of the relay K4 is connected to the VCC power supply, the negative electrode of the infrared led D1 is connected to the collector of a phototransistor VT1, the emitter of the phototransistor VT1 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R3 is connected to the non-inverting input end of an operational amplifier AR1, the other end of the resistor R2 is connected to one end of a resistor R4, one end of a resistor R8 and the negative electrode of a voltage regulator D14 are grounded, the other end of the resistor R35 4 is connected to one end of a resistor R5 and the inverting input of the operational amplifier AR1, the other end of the resistor R5 is connected with the output end of the operational amplifier AR1, one end of the resistor R6 and the other end of the resistor R6 are connected with one end of the resistor R9 and the inverting input end of the operational amplifier AR2 respectively, the other end of the resistor R7 is connected with the other end of the resistor R8 and the non-inverting input end of the operational amplifier AR2 respectively, the output end of the operational amplifier AR2 is connected with the other end of the resistor R9 and one end of the resistor R30 respectively, the other end of the resistor R30 is connected with the negative electrode of the voltage stabilizing tube D13, and the positive electrode of the voltage stabilizing tube D13 is connected with the positive electrode of the voltage stabilizing tube D14.
6. The fire monitoring device of the electric curtain as claimed in claim 1, wherein the motor action circuit comprises a resistor R10, one end of the resistor R10 is connected with the cathode of a voltage regulator tube D13 and one end of a limit switch SQ1 in the smoke detection circuit respectively, the other end of the resistor R10 is connected with the base of a triode Q1, the emitter of a triode Q1 is connected with the ground, the collector of the triode Q1 is connected with one end of a relay K5 and the anode of a diode D2 respectively, the other end of the relay K5 is connected with the cathode of a diode D2, the other end of the relay K6, the cathode of a diode D3, one end of a normally open contact K6-1 of the relay K6 and the anode of an infrared light emitting diode D1 in the smoke detection circuit respectively, one end of a normally closed contact K5-1 of the relay K5 is connected with the electric curtain controller power supply, the other end of a normally closed contact K5-1 of the relay K5 is connected with the electric curtain controller, the other end of the limit switch SQ1 is connected with one end of a normally open contact K5-2 of a relay K5, the other end of the normally open contact K5-2 of the relay K5 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with a base electrode of a triode Q2, a collector electrode of the triode Q2 is respectively connected with one end of a relay K6 and an anode of a diode D3, the other end of the normally open contact K6-1 of the relay K6 is connected with one end of a motor M, and the other end of the motor M is connected with the ground.
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| CN114113528A (en) * | 2021-11-30 | 2022-03-01 | 郑州经开水务发展有限公司 | Water quality monitoring early warning device |
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| CN113647787B (en) | 2022-11-01 |
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