CN203916100U - Solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine - Google Patents

Solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine Download PDF

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Publication number
CN203916100U
CN203916100U CN201420337401.1U CN201420337401U CN203916100U CN 203916100 U CN203916100 U CN 203916100U CN 201420337401 U CN201420337401 U CN 201420337401U CN 203916100 U CN203916100 U CN 203916100U
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curtain
infrared remote
control
stage
micro machine
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CN201420337401.1U
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阮树成
阮小青
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Abstract

The utility model relates to electronic technology field, specifically a solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine.Comprise sun-generated electric power, three-phase inverter, four road stage curtains, four three-phase micro machine M 1, M 2, M 3, M 4controlled by sound and light module, infrared remote-control emitter and receiver assembly, four rail draw curtain transmission mechanisms, three-phase micro machine driving torque is large, heavy burden ability is haled moving large-scale stage curtain, sun-generated electric power once drops into long-term use, there is no electricity charge consumption, facilitate park, square mobile stage literature and art amusement performance.The story of a play or opera starts light grow sound equipment and has gathered, acousto-optic sensing makes the transmission of three-phase micro machine forward, automatically pull open stage curtain, items on the program finish sound equipment falling, dim light, and acousto-optic sensor dull thread irradiates, the reverse transmission of three-phase micro machine, automatic drawing stage curtain, infrared remote control pulls open or drawing by performance content setting, flexible and convenient to use, promotes entertainment performing effect.The utility model is applicable to control stage performance curtain.

Description

Solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine
Technical field
The utility model relates to electronic technology field, specifically a kind of solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine.
Background technology
In park, square stage literature and art amusement performance, often power supply is laid inconvenient.Curtain is the main curtain of stage, for performing, starts and finishes, and hand-guided is wasted time and energy, and is not suitable with modern amusement performance requirement.Acousto-optic sensing amusement performance strong illumination, sound equipment has gathered automatically to be controlled and pulls open curtain opener, and items on the program finish dim light sound equipment and fall control automatically after rise and draw and change curtain opener, reach performing effect.But, not all performance all needs controlled by sound and light, for example, performance solo, solo, performance need be by stage two road curtains, three road curtain replacings or folding, lifting, obviously, controlled by sound and light stage curtain function limitation, does not also meet performance requirement, infrared remote control stage curtain can be controlled by performance plot, and both are combined with lifting performing effect.
Summary of the invention
The purpose of this utility model is to provide in park, flowing in square, AC power is laid in performance inconvenience, controls a kind of solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine of stage performance curtain.
The utility model technical solution: comprise sun-generated electric power, three-phase inverter, four road stage curtains, four three-phase micro machine M 1, M 2, M 3, M 4, controlled by sound and light module, infrared remote-control emitter and receiver assembly, four rail draw curtain transmission mechanisms, wherein, controlled by sound and light module is by sound, optical sensor, preamplifier, shaping phase inverter, curtain pulls open stroke timer, curtain drawing stroke timer forms, infrared remote-control emitter and receiver assembly are by A, B, C, D, E, F, G, H, I nine channel pulse codings, decoding, impulse modulation transmitting, receive, interlocking is controlled, controlled by sound and light module sound, optical sensor connects curtain through a shaping phase inverter of preamplifier series connection and pulls open stroke timer, curtain pulls open the output of stroke timer through resistance R 2meet triode VT 1and relay J 1, controlled by sound and light module acousto-optic sensor connects curtain drawing stroke timer through two shaping phase inverters of preamplifier series connection, and curtain drawing stroke timer is exported through resistance R 1meet triode VT 2and relay J 2, infrared remote control receiver decoding B passage is through resistance R 3meet triode VT 1and relay J 1, C-channel is through resistance R 4meet triode VT 2and relay J 2, H passage is through resistance R 5meet triode VT 3and relay J 3, I passage is through resistance R 6meet triode VT 4and relay J 4, same, passage D, E and F, G connect corresponding triode and relay through resistance, three-phase micro machine M 1control circuit is through current overload thermal protector FR, relay contact J 1-1with J 2-1meet A.C. contactor K 1contact K 1-1, K 1-2, K 1-3with K 2-1, K 2-2, K 2-3phase sequence intersection turns to reversible sun-generated electric power three-phase inverter output a, b, c, the three-phase micro machine M of connecing 2～M 4control circuit and three-phase micro machine M 1control circuit is identical, and four rail draw curtain transmission mechanisms are by four three-phase micro machine M 1, M 2, M 3, M 4axle all slows down through transmission case worm and gear, and transmission four rail Timing Belts draw respectively four road stage curtain opening and closing, infrared remote-control emitter button S 1control first road curtain and pull open, button S 2control the curtain drawing of first road, button S 3, S 5control second, San road curtain pull open, button S 4, S 6control respectively this twice curtain drawing, button S 7control extreme trace curtain and pull open, button S 8control the drawing of extreme trace curtain, A channel is through resistance R 7meet triode VT 5and bistable state memory self-locking relay J 5, often draw contact J 5-1connect acousto-optic controlled circuit modular power source end, normally opened contact J 5-2meet infrared remote control receiver power end V cc, tool arm contact connects sun-generated electric power, button S 9control and switch controlled by sound and light and infrared remote control pattern,
Wherein, infrared remote-control emitter is by infrared emission chip IC 1vibration, regularly, modulation, nine passages of pulse code, by S 1～S 9key switch is controlled triode VT 12amplify, drive infrarede emitting diode VD 1transmitting telecommand, light emitting diode VD 2transmitting remote control shows;
Infrared remote receiver is by photodiode VD 3, infrared receiving chip IC 2receive signal, amplify, demodulation access coding chip IC 3pulse decoding, corresponding B, C, D, E, F, G, H, I, nine passage interlocking patterns of A are amplified and are driven relay through triode respectively, control four three-phase micro machine M 1, M 2, M 3, M 4the positive and negative transmission of four rails, traction four road stage curtain opening and closing, A channel switches controlled by sound and light and infrared remote control pattern;
Sun-generated electric power is by photovoltaic battery panel E 2output is through blocking diode VD 4, relay J contact J -1meet battery E 3, controlled by sound and light module, infrared remote control receiver, three-phase inverter power end, battery E 3cross pressure-controlled sampling and meet potentiometer RP 3, adjustable termination window voltage comparable chip ICa positive input terminal, under-voltage control sampling meets potentiometer RP 2, adjustable termination window voltage comparable chip IC bnegative input end, window voltage comparable chip ICa negative input end and window voltage comparable chip IC bpositive input terminal is through resistance R 16, R 17divide crimping voltage-stabiliser tube VD 8voltage is made reference, and window voltage is relatively exported through triode and connect relay J, battery E 3be connected in series quick fuse F, and take over control reversal connection diode VD 5;
Three-phase inverter is by insulated gate power triode VT 6, VT 7, VT 8, VT 9, VT 10, VT 11form PWM pulsewidth modulation inversion, six pipe grids connect respectively PWM controller signals voltage, and collector and emitter fly-wheel diode in parallel suppresses transformer and produces backward voltage, VT 6emitter stage series connection VT 9colelctor electrode meets transformer T primary inductance TL 1, VT 7emitter stage series connection VT 10colelctor electrode meets primary inductance TL 2, VT 9emitter stage series connection VT 11colelctor electrode meets transformer T primary inductance TL 3, sun-generated electric power positive pole meets VT 6, VT 7, VT 8colelctor electrode, sun-generated electric power negative pole meets VT 9, VT 10, VT 11emitter stage, transformer secondary output inductance TL 1 ', TL 2 ', TL 3 'as three-phase inverter output a, b, c, relay contact J 1-1, J 1-2a.C. contactor K connects respectively 1, K 2access center line N, phase line, three-phase micro machine M 1control circuit is through current overload thermal protector FR, ac contactor contact K 1-1, K 1-2, K 1-3with K 2-1, K 2-2, K 2-3be connected into the reversible commutation of phase sequence, through fuse F 1, F 2, F 3connect three-phase inverter output, transformer PL penetrates phase line and picks up load current signal feedback and connect the pulsewidth modulation of PWM controller;
Four rail draw curtain transmission mechanisms connect respectively transmission case by four guide rail two ends, guide rail inside is by the closed engagement of Timing Belt two ends transmission case gear, Timing Belt meshes respectively two the traction cranes in left and right, two of left and right traction crane is inserted two groups of hanging wheels subsequently, hook support is put respectively in transmission case outside, the transmission case of four guide rail one end is by worm shaft socket three-phase micro-motor, worm engaging worm gear speed reducing transmission, the worm gear transmission case gear that is coupling, four curtain top, road hooks are hooked in respectively on four traction cranes, four road curtain end hooks are hooked in respectively in four hook support, all the other hooks of four road curtains are hooked in respectively on four groups of hanging wheels.
The utility model produces good effect: sun-generated electric power once drops into long-term use, there is no electricity charge consumption, facilitate park, square mobile stage literature and art amusement performance, enrich the demand of the people to cultural spirit life, three-phase micro machine heavy burden ability is strong, pull large-scale stage curtain, acousto-optic sensing is controlled folding curtain opener automatically, by performance plot, set accurately and control, by performance story of a play or opera content infrared remote control, pulled open or drawing stage four road curtains, flexible and convenient to use, increase performance enjoyment, promote entertainment effect, give the relaxed and joyful happiness of spectators.Switch light-operated and infrared remote control power supply change control model, components and parts are multiplexing, save cost.
Accompanying drawing explanation
Fig. 1 technical solutions of the utility model schematic circuit
Fig. 2 tetra-rail three-phase micro machine control circuits
Fig. 3 infrared remote-control emitter
Fig. 4 infrared remote control receiver
Fig. 5 solar-electricity source control circuit
Fig. 6 tetra-rail stage curtain drawing machine schematic diagrames
The specific embodiment
With reference to Fig. 1,2,3,4,5,6, the utility model specific embodiment and embodiment: comprise sun-generated electric power 10, three-phase inverter 16,8,9, four three-phase micro machine M of four road stage curtains 1, M 2, M 3, M 44, 5, controlled by sound and light module 1, infrared remote-control emitter 2 and receiver 3 assemblies, four rail draw curtain transmission mechanisms 6, 7, wherein, controlled by sound and light module 1 is by sound, optical sensor 11, preamplifier 12, shaping phase inverter 13, curtain pulls open stroke timer 14, curtain drawing stroke timer 15 forms, infrared remote-control emitter 2 and receiver 3 assemblies are by A, B, C, D, E, F, G, H, I nine channel pulse codings, decoding, carrier frequency pulse modulate emission, receive, interlocking is controlled, controlled by sound and light module 1 is by sound, optical sensor 11 connects curtain through a shaping phase inverter 13 of preamplifier 12 series connection and pulls open stroke timer 15, curtain pulls open 15 outputs of stroke timer through resistance R 2meet triode VT 1and relay J 1, controlled by sound and light module 1 sound, optical sensor 11 connect curtain drawing stroke timer 14 through two shaping phase inverters 13 of preamplifier 12 series connection, and 14 outputs of curtain drawing stroke timer are through resistance R 1meet triode VT 2and relay J 2, infrared remote control receiver 3 decoding B passages are through resistance R 3meet triode VT 1and relay J 1, C-channel is through resistance R 4meet triode VT 2and relay J 2, H passage is through resistance R 5meet triode VT 3and relay J 3, I passage is through resistance R 6meet triode VT 4and relay J 4, same, passage D, E and F, G connect corresponding triode and relay through resistance, three-phase micro machine M 1control circuit Q 1through current overload thermal protector FR, relay contact J 1-1with J 2-1meet A.C. contactor K 1contact K 1-1, K 1-2, K 1-3with K 2-1, K 2-2, K 2-3phase sequence intersection turns to reversible sun-generated electric power 10 three-phase inverter 16 output a, b, c, the three-phase micro machine M of connecing 2～M 4control circuit Q 2～Q 4with three-phase micro machine M1 control circuit Q 1identical, four rail draw curtain transmission mechanisms 6,7 are by four three-phase micro machine M 1, M 2, M 3, M 44,5 axles all slow down through transmission case worm and gear, and transmission four rail Timing Belts draw respectively four road stage curtain 8,9 opening and closing, infrared remote-control emitter 2 button S 1control first road curtain 8 and pull open, button S 2control curtain 8 drawings of first road, button S 3, S 5control second, San road curtain pull open, button S 4, S 6control respectively this twice curtain drawing, button S 7control extreme trace curtain 9 and pull open, button S 8control 9 drawings of extreme trace curtain, A channel is through resistance R 7meet triode VT 5and bistable state memory self-locking relay J 5, normally-closed contact J 5-1connect acousto-optic controlled circuit modular power source 1 end, normally opened contact J 5-2meet infrared remote control receiver 3 power end Vcc, tool arm contact connects sun-generated electric power 10, button S 9control and switch controlled by sound and light and infrared remote control pattern.
Solar cell E 2daylight is for folding stage curtain, simultaneously to battery E 3charging, night is by battery E 3power supply.Window voltage comparable chip ICa, IC boutput level is through triode VT 13drive relay J to control under-voltage, the overvoltage of charging, protection battery E 3normal operation.
Control that sun-generated electric power is under-voltage, at battery E 3voltage is during lower than window voltage comparable chip ICa reference voltage, relay J adhesive, contact J -1connect battery E 3charging, as battery E 3voltage is sufficient, crosses pressure-controlled voltage higher than window voltage comparable chip IC bduring reference voltage, relay J releasing contact J -1, cut off solar cell E 2to battery E 3charging.Folding stage curtain power consumption reduces battery E 3voltage, sun-generated electric power is recovered charging.Switch S 11control acousto-optic sensing, infrared remote control receiver power supply, switch S 12control three-phase inverter direct-current input power supplying.
Relay J two ends diode VD in parallel 9suppress backward voltage.Voltage-stabiliser tube VD 8and resistance R 15, capacitor C 9voltage stabilizing guarantee is under-voltage, overvoltage is accurately controlled.Window voltage comparable chip IC selects LM358 double operational.
Four rail draw curtain drive mechanisms (by one act be example, all the other are identical), guide rail 6a, transmission case 6b, Timing Belt 6c, hanging wheel 6d, traction crane 6e, hook support 6f, three-phase micro machine 4,5, stage curtain 8,9.
Infrared remote-control emitter coding chip IC 1select TM701, infrared diode VD 1firing order, light emitting diode VD 2transmitting remote control shows, battery Eq power supply, infrared receiving unit IC 2cX20106A, coding chip IC 3tM702, regulates RP 1infrared remote control carrier frequency 38KHz, command range 30m left and right.
Relay J 5select ZS01 bistable state memory self-locking type.Switch light-operated and infrared remote control power supply, change two kinds of control models, triode VT 1, VT 2and relay J 1, J 2light-operated multiplexing with infrared remote control, save components and parts, reduce costs.
Near acousto-optic sensor installing stage, performance starts along with story of a play or opera climax, strong sound equipment and strong illumination, acousto-optic sensor signal controlling is pulled open stroke timer, connect the transmission of three-phase micro machine forward, automatically control and pull open or change curtain, items on the program finish the low and light of the sound when dimmed, light-sensitive device dull thread irradiates, the output of sound sensing no signal, the reverse transmission of curtain drawing stroke Timer Controlling three-phase micro machine, automatically control and close up curtain, pull open and close up according to performance story of a play or opera content development setting replacing, also can be connected with multi-media central control system, sequencing is controlled.
Stage curtain is selected the flexible materials such as pleuche, georgette velvet, numb suede, silk floss piece goods, Fu Chunfang, and curtain size is looked the design of stage size, and thick material weight is large, requires transmission traction heavy burden ability strong, and rotational noise is low.The utility model transmission mechanism worm and gear slows down, and driving torque is large, precision is high, can meet instructions for use.
Two roads, three road curtain infrared remote-control operations, can pull open or close up in shunting, for solo, performance, in dancing or drama, opera fragment, open and close and change stage property and setting, four road curtains can be used as stage background or wing flats, to stage both sides aesthetic feeling, design is played and is strengthened spectators' vision third dimension, curtain i.e. main curtain acousto-optic, infrared dual control, flexible and convenient to use, increases performance enjoyment, promote entertainment effect, make the relaxed and joyful happy sensation on the spot in person of spectators.
Three-phase micro machine driving torque is large, and traction pulls the large-scale stage curtain of thick and heavy cloth, and the strong folding of heavy burden ability is steady, and Timing Belt and meshed transmission gear traction curtain are quiet.Sun-generated electric power is omitted electric network source and is laid, and sun-generated electric power once drops into long-term use, there is no electricity charge consumption, facilitates park, square mobile stage literature and art amusement performance, enriches the demand of the people to cultural spirit life.

Claims (6)

1. a solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine, is characterized in that: comprise sun-generated electric power, three-phase inverter, four road stage curtains, four three-phase micro machine M 1, M 2, M 3, M 4, controlled by sound and light module, infrared remote-control emitter and receiver assembly, four rail draw curtain transmission mechanisms, wherein, controlled by sound and light module is by sound, optical sensor, preamplifier, shaping phase inverter, curtain pulls open stroke timer, curtain drawing stroke timer forms, infrared remote-control emitter and receiver assembly are by A, B, C, D, E, F, G, H, I nine channel pulse codings, decoding, impulse modulation transmitting, receive, interlocking is controlled, controlled by sound and light module sound, optical sensor connects curtain through a shaping phase inverter of preamplifier series connection and pulls open stroke timer, curtain pulls open the output of stroke timer through resistance R 2meet triode VT 1and relay J 1, controlled by sound and light module acousto-optic sensor connects curtain drawing stroke timer through two shaping phase inverters of preamplifier series connection, and curtain drawing stroke timer is exported through resistance R 1meet triode VT 2and relay J 2, infrared remote control receiver decoding B passage is through resistance R 3meet triode VT 1and relay J 1, C-channel is through resistance R 4meet triode VT 2and relay J 2, H passage is through resistance R 5meet triode VT 3and relay J 3, I passage is through resistance R 6meet triode VT 4and relay J 4, same, passage D, E and F, G connect corresponding triode and relay through resistance, three-phase micro machine M 1control circuit is through current overload thermal protector FR, relay contact J 1-1with J 2-1meet A.C. contactor K 1contact K 1-1, K 1-2, K 1-3with K 2-1, K 2-2, K 2-3phase sequence intersection turns to reversible sun-generated electric power three-phase inverter output a, b, c, the three-phase micro machine M of connecing 2～M 4control circuit and three-phase micro machine M 1control circuit is identical, and four rail draw curtain transmission mechanisms are by four three-phase micro machine M 1, M 2, M 3, M 4axle all slows down through transmission case worm and gear, and transmission four rail Timing Belts draw respectively four road stage curtain opening and closing, infrared remote-control emitter button S 1control first road curtain and pull open, button S 2control the curtain drawing of first road, button S 3, S 5control second, San road curtain pull open, button S 4, S 6control respectively this twice curtain drawing, button S 7control extreme trace curtain and pull open, button S 8control the drawing of extreme trace curtain, A channel is through resistance R 7meet triode VT 5and bistable state memory self-locking relay J 5, often draw contact J 5-1connect acousto-optic controlled circuit modular power source end, normally opened contact J 5-2connect infrared remote control receiver power end, tool arm contact connects sun-generated electric power, button S 9control and switch controlled by sound and light and infrared remote control pattern.
2. solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine according to claim 1, is characterized in that: infrared remote-control emitter is by infrared emission chip IC 1vibration, regularly, modulation, nine passages of pulse code, by S 1～S 9key switch is controlled triode VT 12amplify and drive infrarede emitting diode VD 1transmitting telecommand, light emitting diode VD 2transmitting remote control shows.
3. solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine according to claim 1, is characterized in that: infrared remote receiver is by photodiode VD 3, infrared receiving chip IC 2receive signal, amplify, demodulation access coding chip IC 3pulse decoding, corresponding B, C, D, E, F, G, H, I, nine passage interlocking patterns of A are amplified and are driven relay through triode respectively, control four three-phase micro machine M 1, M 2, M 3, M 4the positive and negative transmission of four rails, traction four road stage curtain opening and closing, A channel switches controlled by sound and light and infrared remote control pattern.
4. solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine according to claim 1, is characterized in that: sun-generated electric power is by photovoltaic battery panel E 2output is through blocking diode VD 4, relay J contact J -1meet battery E 3, controlled by sound and light module, infrared remote control receiver, three-phase inverter power end, battery E 3cross pressure-controlled sampling and meet potentiometer RP 3, adjustable termination window voltage comparable chip ICa positive input terminal, under-voltage control sampling meets potentiometer RP 2, adjustable termination window voltage comparable chip IC bnegative input end, window voltage comparable chip ICa negative input end and window voltage comparable chip IC bpositive input terminal is through resistance R 16, R 17divide crimping voltage-stabiliser tube VD 8voltage is made reference, and window voltage is relatively exported through triode and connect relay J, battery E 3be connected in series quick fuse F, and take over control reversal connection diode VD 5.
5. solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine according to claim 1, is characterized in that: three-phase inverter is by insulated gate power triode VT 6, VT 7, VT 8, VT 9, VT 10, VT 11form PWM pulsewidth modulation inversion, six pipe grids connect respectively PWM controller signals voltage, and collector and emitter fly-wheel diode in parallel suppresses transformer and produces backward voltage, VT 6emitter stage series connection VT 9colelctor electrode meets transformer T primary inductance TL 1, VT 7emitter stage series connection VT 10colelctor electrode meets primary inductance TL 2, VT 9emitter stage series connection VT 11colelctor electrode meets transformer T primary inductance TL 3, sun-generated electric power positive pole meets VT 6, VT 7, VT 8colelctor electrode, sun-generated electric power negative pole meets VT 9, VT 10, VT 11emitter stage, transformer secondary output inductance TL 1 ', TL 2 ', TL 3 'as three-phase inverter output a, b, c, relay contact J 1-1, J 1-2a.C. contactor K connects respectively 1, K 2access center line N, phase line, three-phase micro machine M 1control circuit Q 1through current overload thermal protector FR, ac contactor contact K 1-1, K 1-2, K 1-3with K 2-1, K 2-2, K 2-3be connected into the reversible commutation of phase sequence, through fuse F 1, F 2, F 3connect three-phase inverter output, transformer PL penetrates phase line and picks up load current signal feedback and connect the pulsewidth modulation of PWM controller.
6. solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine according to claim 1, it is characterized in that: four rail draw curtain transmission mechanisms connect respectively transmission case by four guide rail two ends, guide rail inside is by the closed engagement of Timing Belt two ends transmission case gear, Timing Belt meshes respectively two the traction cranes in left and right, two of left and right traction crane is inserted two groups of hanging wheels subsequently, hook support is put respectively in transmission case outside, the transmission case of four guide rail one end is by worm shaft socket three-phase micro-motor, worm engaging worm gear speed reducing transmission, the worm gear transmission case gear that is coupling, four curtain top, road hooks are hooked in respectively on four traction cranes, four road curtain end hooks are hooked in respectively in four hook support, all the other hooks of four road curtains are hooked in respectively on four groups of hanging wheels.
CN201420337401.1U 2014-06-13 2014-06-13 Solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine Expired - Fee Related CN203916100U (en)

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CN201420337401.1U CN203916100U (en) 2014-06-13 2014-06-13 Solar energy light infrared remote control sound sensing three-phase micro machine stage curtain drawing machine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105148544A (en) * 2014-06-13 2015-12-16 阮小青 Solar infrared remote control and acousto-optical sensing stage curtain pulling machine with three-phase micromotors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105148544A (en) * 2014-06-13 2015-12-16 阮小青 Solar infrared remote control and acousto-optical sensing stage curtain pulling machine with three-phase micromotors
CN105148544B (en) * 2014-06-13 2018-01-23 阮小青 Solar energy light infrared remote control sound senses three-phase micro machine stage curtain drawing machine

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