阅读说明：本技术 一种基于消防安全的电动窗帘控制装置 (Electric curtain control device based on fire safety ) 是由 李连海 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种基于消防安全的电动窗帘控制装置,所述装置包括依次连接的烟雾检测控制电路、烟雾检测状态显示电路、烟雾检测电路、电机动作电路；所述烟雾检测控制电路导通工作,控制烟雾检测状态显示电路工作,烟雾检测状态显示电路发光,同时控制烟雾检测电路与电机动作电路接通电源工作,烟雾检测电路对烟雾进行检测,将检测到的烟雾信号进行放大后与一定值进行比较,在发生火灾产生烟雾时,烟雾检测电路输出高电平信号到电机动作电路,电机动作电路进行动作,有效的解决了现有技术中存在的电动窗帘的火灾烟雾联动程度有限,若在有火灾烟雾时电动窗帘自动闭合后,又被人误打开,引发消防安全事故发生的问题。(The invention discloses an electric curtain control device based on fire safety, which comprises a smoke detection control circuit, a smoke detection state display circuit, a smoke detection circuit and a motor action circuit which are sequentially connected; the smoke detection control circuit is conducted to work, the smoke detection state display circuit is controlled to work, the smoke detection state display circuit emits light, the smoke detection circuit and the motor action circuit are controlled to be powered on to work, the smoke detection circuit detects smoke, detected smoke signals are amplified and then compared with a certain value, when smoke is generated in a fire disaster, the smoke detection circuit outputs high-level signals to the motor action circuit, the motor action circuit acts, the fire and smoke linkage degree of the electric curtain in the prior art is effectively limited, if the electric curtain is automatically closed when fire smoke exists, the electric curtain is mistakenly opened by people, and the fire safety accident is caused.)

1. A fire safety-based electric curtain control device is characterized by comprising a smoke detection control circuit, a smoke detection state display circuit, a smoke detection circuit and a motor action circuit which are sequentially connected;

the smoke detection control circuit controls the working state of the smoke detection state display circuit, the smoke detection control circuit controls the smoke detection state display circuit to work after being conducted 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 powered on to work, the smoke detection circuit detects smoke, detected smoke signals are amplified and then compared with a certain value, when smoke is generated in a fire disaster, the smoke detection circuit outputs high-level signals to the motor action circuit after comparing the amplified smoke signals with the certain value, and the motor action circuit receives the high-level signals and then acts.

2. The fire safety-based electric curtain control device as claimed in claim 1, wherein the smoke detection control circuit comprises a resistor R12, one end of the resistor R12 is connected to one end of a normally open contact K2-2 of a relay K2, one end of a port 3 and a port 1 of a double-interlock button switch SB1 and is connected to a power source VCC, the other end of the resistor R12 is connected to one end of a resistor R13, the other end of the 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 SCR1, the other end of the resistor R16 is connected to a cathode of a thyristor SCR1 and is connected to ground, an anode of the thyristor SCR1 is connected to one end of a relay K3 and an anode of a diode D6, the other end of the relay K3 is connected to a cathode of a diode D6 and an end of a button switch SB3, the other end of the button switch SB3, and a collector of the transistor Q3 is connected to one end of a button switch SB2 and a terminal of a VCC, 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 connected with one end of a normally closed contact K3-1 of a relay K3, the other end of a button switch SB2 is connected with one end of a relay K2 and the anode of a diode D4, the cathode of a diode D4 is connected with the other end of the relay K2, the port 4 of a double-interlocking button switch SB1 and the other end of a normally open contact K2-2 of the relay K2, the other end of a normally closed contact K3-1 of the relay K3 is connected with one end of a normally closed contact K2-1 of the relay K2, the other end of a normally closed contact K2-1 of the relay K2 is connected with one end of a relay K1 and the anode of a diode D5, and the other end of the relay K1 is connected with the cathode of a diode D5 and the port 2 of the double-interlocking button switch SB 1.

3. The fire safety-based motorized window treatment control device of claim 1, 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 a resistor R15, the other end of the resistor R15 is connected with a base electrode of a triode Q4, a collector electrode of a triode Q4 is connected with a collector electrode of a triode Q3 in the smoke detection control circuit, an emitter electrode of the triode Q4 is respectively connected with one end of a resistor R18, one end of a resistor R17 and one end of a resistor R19, the other end of the resistor R17 is connected with an anode of a light-emitting diode D8, a cathode of the light-emitting diode D8 is respectively connected with the other end of a resistor R18 and an emitter electrode of a triode Q5 and is connected with the ground, a collector electrode of the triode Q5 is respectively connected with one end of a relay K4 and an anode of a diode D7, and a cathode of a diode D7 is connected with the other end of the relay K4 and connected with the power supply VCC.

4. The fire safety-based electric curtain control device as claimed in claim 1, wherein 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 normally open contact K4-1 of a relay K4 and one end of a resistor R7, the other end of a normally open contact K4-1 of a relay K4 is connected to the VCC, the cathode of the infrared light emitting diode D1 is connected to the collector of a phototriode VT1, the emitter of the phototriode 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 inverting input of the operational amplifier AR1 is connected to one end of a resistor R4 and one end of a resistor R5, and the other end of a resistor R4 is connected to the other end of a resistor R2 and one end of a resistor R8, The negative electrode of a voltage regulator tube D10 is connected in parallel to the ground, the output end of an operational amplifier AR1 is respectively connected with the other end of a resistor R5 and one end of a resistor R6, the other end of the resistor R6 is respectively connected with one end of a resistor R9 and the reverse-phase input end of an operational amplifier AR2, the non-phase input end of the operational amplifier AR2 is respectively connected with the other end of the resistor R7 and the other end of a resistor R8, the output end of the operational amplifier AR2 is respectively connected with the other end of a resistor R9 and one end of a resistor R20, the other end of the resistor R20 is connected with the negative electrode of a voltage regulator tube D9, and the positive electrode of the voltage regulator tube D9 is connected with the positive electrode of a voltage regulator tube D10.

5. The fire safety-based electric curtain control device as claimed in claim 1, wherein the motor operating circuit comprises a resistor R10, one end of the resistor R10 is connected to the cathode of a voltage regulator D9 and one end of a limit switch SQ1 of the smoke detection circuit, respectively, the other end of the resistor R10 is connected to the base of a transistor Q1, the emitter of the transistor Q1 is connected to ground, the collector of the transistor Q1 is connected to one end of a relay K5 and the anode of a diode D2, the cathode of the diode D2 is connected to the other end of a relay K5, 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 is connected to the anode of an infrared light emitting diode D1 of the smoke detection circuit, one end of a normally closed contact K5-1 of the relay K5 is connected to the electric curtain controller power supply, the other end of a normally closed contact K5-1 of the relay K5 is connected to 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 a resistor R11 is connected with a base electrode of a triode Q2, an emitter electrode of the triode Q2 is connected with the ground, a collector electrode of a triode Q2 is respectively connected with one end of the 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.

Technical Field

The invention relates to the field of fire safety, in particular to an electric curtain control device based on fire safety.

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 home, 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 homes downstairs along with wind through the window, then fire of other homes can be caused, or a downstairs home catches 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 fire is introduced into the home by igniting the opened curtain, or the fire occurs upstairs, the fire species falling upstairs can also be introduced into the home through the curtain opened by the home, and the life and property are threatened.

Fire safety is always a matter of attention of people, property loss of people is caused by fire safety accidents caused by curtains, and lives of people are endangered even more.

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 safety-based electric curtain control device, which effectively solves the problems that the electric curtain has limited fire smoke linkage degree in the prior art, and fire safety accidents are caused if the electric curtain is automatically closed and then is opened by mistake when fire smoke exists.

The technical scheme for solving the problem is that the electric curtain control device based on fire safety comprises a smoke detection control circuit, a smoke detection state display circuit, a smoke detection circuit and a motor action circuit which are sequentially connected; the smoke detection control circuit controls the working state of the smoke detection state display circuit, the smoke detection control circuit controls the smoke detection state display circuit to work after being conducted 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 a detected smoke signal and compares the amplified smoke signal with a certain value, when smoke is generated in a fire, the smoke detection circuit compares the amplified smoke signal with a certain value and outputs a high-level signal to the motor action circuit, and the motor action circuit receives the high-level signal and then acts;

furthermore, the smoke detection 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 a resistor R13 is connected with a base of a triode Q3, an emitter of the 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 and one end of a button switch SB3, the other end of the button switch SB3 is connected with the power supply VCC, a collector of the triode Q3 is respectively connected with one end of a button switch SB2 and one end of a normally-closed contact K1-1 of the relay K1, the other end of a normally closed contact K1-1 of a relay K1 is connected with one end of a normally closed contact K3-1 of a relay K3, the other end of a button switch SB2 is connected with one end of a relay K2 and the anode of a diode D4 respectively, the cathode of a diode D4 is connected with the other end of the relay K2, the port 4 of a double-linkage button switch SB1 and the other end of a normally open contact K2-2 of the relay K2 respectively, the other end of a normally closed contact K3-1 of the relay K3 is connected with one end of a normally closed contact K2-1 of the relay K2, the other end of a normally closed contact K2-1 of the relay K2 is connected with one end of a relay K1 and the anode of a diode D5 respectively, and the other end of a relay K1 is connected with the cathode of a diode D5 and the port 2 of the double-linkage 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 a resistor R15, the other end of the resistor R15 is connected with a base electrode of a triode Q4, a collector electrode of a triode Q4 is connected with a collector electrode of a triode Q3 in the smoke detection control circuit, an emitter electrode of the triode Q4 is respectively connected with one end of a resistor R18, one end of the resistor R17 and one end of a resistor R19, the other end of the resistor R17 is connected with an anode electrode of a light emitting diode D8, a cathode electrode of a light emitting diode D8 is respectively connected with the other end of the resistor R18 and the emitter electrode of the triode Q5 and is connected with ground, the collector electrode of the triode Q5 is respectively connected with one end of a relay K4 and the anode electrode of a diode D7, and a cathode electrode of a diode D7 is connected with the other end of the relay K4 and connected with the 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 with one end of a normally-open contact K4-1 of a relay K4 and one end of a resistor R7 respectively, the other end of a 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 a resistor R1, the other end of the resistor R1 is connected with one end of a resistor R2 and one end of a resistor R3 respectively, the other end of the resistor R3 is connected with the non-inverting input end of an operational amplifier AR1, the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R4 and one end of a resistor R5 respectively, the other end of the resistor R4 is connected with the other end of a resistor R2, one end of a resistor R8 and the cathode of a voltage regulator D10 respectively, and the output end of the operational amplifier AR1 is connected with the other end of the resistor R5 respectively, One end of a resistor R6, the other end of the resistor R6 is respectively connected with one end of a resistor R9 and the reverse-phase input end of an operational amplifier AR2, the non-phase input end of the operational amplifier AR2 is respectively connected with the other end of a resistor R7 and the other end of a resistor R8, 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 R20, the other end of the resistor R20 is connected with the negative electrode of a voltage stabilizing tube D9, and the positive electrode of the voltage stabilizing tube D9 is connected with the positive electrode of a voltage stabilizing tube D10;

further, the motor action circuit comprises a resistor R10, one end of the resistor R10 is respectively connected with the negative electrode of a voltage regulator tube D9 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 electrode of a triode Q1, the emitter electrode of a triode Q1 is connected with the ground, the collector electrode of the triode Q1 is respectively connected with one end of a relay K5 and the positive electrode of a diode D2, the negative electrode of the diode D2 is respectively connected with the other end of a relay K5, the other end of the relay K6, the negative electrode of a diode D3, one end of a normally open contact K6-1 of a relay K6 is connected with the positive electrode 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 a 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, an emitting electrode of a triode Q2 is connected with the ground, a collecting 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 a 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 in 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 smoke detection 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 double-interlocking button switch SB1 must be pressed first, and then the button switch SB2 is pressed, the control function of the invention can be closed, the control protection function of the invention is enhanced by the encryption type switch button, the invention can not be closed randomly, and the invention 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 randomly by paralysis, so that the occurrence of fire accident caused by curtains is further caused;

the button switch SB3 is a recovery button switch, after the control function of the invention is closed, the invention can change the recoverable control function by pressing the button switch SB3, keep the continuous detection of the smoke, has simple operation, and can automatically adjust the time interval for starting the control function of the invention or closing the control function of the invention according to the needs of people;

3. 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 and a motor operation circuit according to the present invention.

Fig. 2 is a schematic diagram of a smoke detection control circuit and a smoke detection state display circuit of the present invention.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings in which reference is made to the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Hereinafter, a fire safety-based motorized window shade control apparatus according to the present invention will be described in detail by way of embodiments with reference to the accompanying drawings.

A fire safety-based electric curtain control device comprises a smoke detection control circuit, a smoke detection state display circuit, a smoke detection circuit and a motor action circuit which are sequentially connected; the smoke detection control circuit controls the working state of the smoke detection state display circuit, the smoke detection control circuit controls the smoke detection state display circuit to work after being conducted 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 powered on to work, the smoke detection circuit detects smoke, detected smoke signals are amplified and then compared with a certain value, when smoke is generated in a fire disaster, the smoke detection circuit outputs high-level signals to the motor action circuit after comparing the amplified smoke signals with the certain value, and the motor action circuit receives the high-level signals and then acts.

The smoke detection 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 the 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 and one end of a button switch SB3, the other end of the button switch SB3 is connected with the power supply VCC, a 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 connected with one end of a normally closed contact K3-1 of a relay K3, the other end of a button switch SB2 is connected with one end of a relay K2 and the anode of a diode D4 respectively, the cathode of a diode D4 is connected with the other end of the relay K2, the port 4 of a double-linkage button switch SB1 and the other end of a normally open contact K2-2 of the relay K2 respectively, the other end of a normally closed contact K3-1 of the relay K3 is connected with one end of a normally closed contact K2-1 of the relay K2, the other end of a normally closed contact K2-1 of the relay K2 is connected with one end of a relay K1 and the anode of a diode D5 respectively, and the other end of a relay K1 is connected with the cathode of a diode D5 and the port 2 of the double-linkage button switch SB1 respectively;

the working principle of the smoke detection control circuit is as follows: button switch SB2 and button switch SB3 belong to normally closed button switch, when not pressing, button switch SB2 and button switch SB3 belong to the closed state, when the manual pressure, button switch SB2 and button switch SB3 break, when the manual release is pressed, the normally closed state is recovered, when double interlock button switch SB1 is not pressed, its normally closed contact is closed, the normally open contact is open, when being pressed by the manual pressure, its normally closed contact is open, 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 and a normally closed contact K3-1 of a relay K3 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 a relay K2, a relay K2, a diode D4 and a button switch SB2 form a path 2;

at ordinary times, in an initial state, the double-interlocking button switch SB1, the button switch SB2 and the button switch SB3 are not pressed, because the normally open contact of the double-interlocking button switch SB1 is disconnected and 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 conducted, the relay K3 is not electrified, the normally closed contact K3-1 of the relay K3 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, 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 because the normally closed contact K2-1 of the relay K2 is disconnected, disconnecting the passage 1, 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, disconnecting the passage 1 and connecting the passage 2;

then the button switch SB2 is pressed again, the relay K2 is not electrified, 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 loosened, the passage 2 is kept not connected, because the relay K3 is electrified, 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 loosened, the passage 1 and the passage 2 are not connected when the button switch SB2 is pressed;

finally, the button switch SB3 is pressed, the relay K3 is not energized, after the release, the relay K3 is still not energized, the normally closed contact K3-1 of the relay K3 is closed, the path 1 is turned on, and the path 2 is not turned on, that is, the button switch SB3 is a recovery button switch, so that the path 1 and the path 2 are recovered to the initial state.

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 a resistor R15, the other end of the resistor R15 is connected with a base electrode of a triode Q4, a collector electrode of a triode Q4 is connected with a collector electrode of a triode Q3 in the smoke detection control circuit, an emitter electrode of the triode Q4 is respectively connected with one end of a resistor R18, one end of a resistor R17 and one end of a resistor R19, the other end of the resistor R17 is connected with an anode of a light-emitting diode D8, a cathode of the light-emitting diode D8 is respectively connected with the other end of a resistor R18 and an emitter electrode of a triode Q5 and is connected with the ground, a collector electrode of the triode Q5 is respectively connected with one end of a relay K4 and an anode of a diode D7, and a cathode of a diode D7 is connected with the other end of a relay K4 and connected with the power supply VCC;

the working principle of the smoke state display circuit is as follows: when a channel 1 or a channel 2 in the smoke detection control circuit is switched on, a triode Q4 is switched on, a light emitting diode D8 emits light, a relay K4 is powered on, when the channel 1 and the channel 2 are not switched on, the triode Q4 is not switched on, the light emitting diode D8 does not emit light, a relay K4 is not powered on, light emitted by the light emitting diode D8 can be green light, the light emitting diode D8 emits green light to represent that the smoke detection control circuit is in a detection working state for fire smoke, the relay K4 is powered on, a normally closed contact K4-1 of the relay K4 is closed, and the smoke detection circuit and the motor action circuit are switched on to a power supply VCC.

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 normally open contact K4-1 of a relay K4 and one end of a resistor R7, the other end of the normally open contact K4-1 of the 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 a 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 inverting input end of the operational amplifier AR1 is respectively connected with one end of the resistor R4 and one end of a resistor R5, the other end of the resistor R4 is respectively connected with the other end of the resistor R2, one end of the resistor R8 and the cathode of a voltage stabilizing tube D10 is grounded, and the output end of the operational amplifier AR1 is respectively connected with the other end of the resistor R5, One end of a resistor R6, the other end of the resistor R6 is respectively connected with one end of a resistor R9 and the reverse-phase input end of an operational amplifier AR2, the non-phase input end of the operational amplifier AR2 is respectively connected with the other end of a resistor R7 and the other end of a resistor R8, 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 R20, the other end of the resistor R20 is connected with the negative electrode of a voltage stabilizing tube D9, and the positive electrode of the voltage stabilizing tube D9 is connected with the positive electrode of a voltage stabilizing tube D10;

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 R20, the voltage regulator tube D9 and the voltage regulator tube D10 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 negative electrode of a voltage regulator tube D9 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 positive electrode of a diode D2, the negative electrode of a diode D2 is respectively connected with the other end of a relay K5, the other end of the relay K6, the negative electrode of a diode D3, one end of a normally-open contact K6-1 of a relay K6 is connected with the positive electrode 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 a relay K5 is connected with an electric curtain controller, the other end of a limit switch SQ1 is connected with one end of a normally-open contact K5-2 of a relay K5, the other end of a normally open contact K5-2 of a 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, an emitting electrode of a triode Q2 is connected with the ground, 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 a 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:

ordinarily, a double-linkage button switch SB1, a button switch SB2 and a button switch SB3 in the smoke detection control circuit are not pressed, a path 1 is connected, a triode Q4 in the smoke detection state display circuit is connected with the path 1, the triode Q4 is connected, and a light-emitting diode D8 emits light to indicate that the smoke detection control circuit 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, and the smoke detection circuit and a motor action circuit are connected with a power supply VCC;

if no smoke is generated in the 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 in the 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 limit switch 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 SQ1 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 smoke is generated in a fire, 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, so that the opening and closing operation of the curtain can be automatically carried out, for example, the automatic opening function in daytime and the automatic closing function at night can not be realized, or the timed opening and closing function can not be realized, for example, the automatic opening function can not be realized in noon break, and the aim of preventing 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 occurrence of 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 disaster, 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 motor control function is lost until no smoke is generated in the fire disaster, 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 is to enable the curtain to be always in a closed state before the danger of smoke generated in the fire disaster is not relieved, and prevent the occurrence of the fire disaster caused by the curtain;

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 smoke detection 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 simultaneously loses the control of the electric curtain controller in the prior art, and the operation of pressing the double-interlock button switch SB1 alone, or pressing the button switch SB2 alone, or pressing the button switch SB2 first, and then pressing the double-interlock button switch SB1 does not enable the present invention to lose the 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, and the control function of the invention is lost, the control function of the invention can be recovered by pressing the button switch SB3, at the moment, the light-emitting diode D8 emits light again, the on and off of the invention can be manually controlled according to actual needs, and the operation is convenient and simple;

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 smoke detection control circuit is provided with a double-linkage button switch SB1 and a button switch SB2, and when the control function of the invention is to be closed, the double-linkage button switch SB1 is firstly pressed, and then the button switch SB2 is pressed, so that the control function of the invention can be closed, the double-linkage button switch SB1 is singly pressed, either the control action of the present invention is disabled by pressing the push button switch SB2 alone, or by pressing the push button switch SB2 followed by the double-interlock push button switch SB1, 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 to occur through the curtain;

the button switch SB3 is a recovery button switch, after the control function of the invention is closed, the invention can change the recoverable control function by pressing the button switch SB3, keep the continuous detection of the smoke, has simple operation, and can automatically adjust the time interval for starting the control function of the invention or closing the control function of the invention according to the needs of people;

3. 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 fire smoke linkage degree of the electric curtain in the prior art is limited, and if the electric curtain is automatically closed and is opened by mistake after fire smoke exists, fire safety accidents can also be caused.