CN105472845A - Buffer filter type delay illumination control system for underground parking garage - Google Patents
Buffer filter type delay illumination control system for underground parking garage Download PDFInfo
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- CN105472845A CN105472845A CN201510908885.XA CN201510908885A CN105472845A CN 105472845 A CN105472845 A CN 105472845A CN 201510908885 A CN201510908885 A CN 201510908885A CN 105472845 A CN105472845 A CN 105472845A
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- electric capacity
- operational amplifier
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- positive pole
- triode
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a buffer filter type delay illumination control system for an underground parking garage. The system comprises a central controller, a sub-controller connected with the central controller, a camera, a power supply, a delay illumination control circuit, and an illumination lamp connected to the delay illumination control circuit, wherein the camera, the power supply and the delay illumination control circuit are all connected to the sub-controller; a signal transceiver for enabling the sub-controller to be wirelessly connected with the central controller is arranged on the sub-controller; and a buffer filter circuit is further connected in series between the signal transceiver and the sub-controller. The invention provides the buffer filter type delay illumination control system for the underground parking garage, so that the illumination of the underground parking garage is more intelligent, the power consumption of an illumination system is better reduced, electric energy is saved, and the illumination cost is reduced.
Description
Technical field
The invention belongs to architectural lighting field, specifically refer to a kind of underground parking field buffer filtering type Delayed illumination control system effectively can saving power consumption.
Background technology
Along with the development of society, automobile progressively universal, along with the increase of the automobile volume of holding per capita, needs larger ground with the underground space for parking cars when the building of building, in underground parking, larger relative to its lighting requirements amount of ground.And in prior art, usual employing be all continue illumination, and along with the area of parking lots day by day increased, continue the also increase day by day of the required electricity consumed of illumination, so just considerably increase the charge costs of property and owner, also waste a large amount of electric power resources simultaneously.
Summary of the invention
The object of the invention is to overcome the problems referred to above, a kind of underground parking field buffer filtering type Delayed illumination control system is provided, make the illumination of underground parking more intelligent, better reduce the power consumption of illuminator, and then save electric energy and the expense needed for illumination.
Object of the present invention is achieved through the following technical solutions:
Underground parking field buffer filtering type Delayed illumination control system, comprise central controller, the sub-controller be connected with this central controller, is all connected to the camera on sub-controller, power supply and Delayed illumination control circuit, and is connected to the illuminating lamp on Delayed illumination control circuit; Sub-controller is provided with and makes itself and central controller by the wireless signal receiving/transmission device be connected, between described signal receiving/transmission device and sub-controller, be also serially connected with buffering filter circuit.
Further, above-mentioned Delayed illumination control circuit is by diode bridge rectifier U1, transformer T1, triode VT1, triode VT2, three terminal regulator IC1, digital circuit IC2, switch S 1, minus earth, the electric capacity C1 that positive pole is connected with the positive output end of diode bridge rectifier U1, N pole is connected with the positive pole of electric capacity C1, the diode D1 that P pole is connected with the collector electrode of triode VT1, the relay K be arranged in parallel with diode D1, one end is connected with the N pole of diode D1, the resistance R1 that the other end is connected with the base stage of triode VT1, one end is connected with the base stage of triode VT2, the resistance R2 that the other end is connected with the Q14 pin of digital circuit IC2, negative pole is connected with the Q14 pin of digital circuit IC2, the electric capacity C4 that positive pole is connected with the Vin pin of three terminal regulator IC1 after electric capacity C2, negative pole is connected with the positive pole of electric capacity C4, the electric capacity C3 that positive pole is connected with the Vout pin of three terminal regulator IC1, one end is connected with the positive pole of electric capacity C3, the resistance R3 that the other end is connected with the VDD pin of digital circuit IC2, positive pole is connected with the positive pole of electric capacity C3, the electric capacity C6 that negative pole is connected with the RESET pin of digital circuit IC2, minus earth, the electric capacity C7 that positive pole is connected with the positive pole of electric capacity C6, negative pole is connected with the CLOCKOUT2 pin of digital circuit IC2, the electric capacity C5 that positive pole is connected with the CLOCKIN pin of digital circuit IC2 after resistance R4, and one end is connected with the CLOCKOUT1 pin of digital circuit IC2, the slide rheostat RP1 that the other end is connected with the positive pole of electric capacity C5 after resistance R5 forms, wherein, an input of diode bridge rectifier U1 is connected with any one end of the secondary inductance coil of transformer T1, another input of diode bridge rectifier U1 is connected with the other end of the secondary inductance coil of transformer T1, the negative output terminal ground connection of diode bridge rectifier U1, the grounded emitter of triode VT1, the base stage of triode VT1 is connected with the collector electrode of triode VT2, the grounded emitter of triode VT2, the Vin pin of three terminal regulator IC1 is connected with the N pole of diode D1, its GND pin ground connection, the minus earth of electric capacity C6, the VSS pin ground connection of digital circuit IC2, any one end of the former limit inductance coil of transformer T1 is in series with switch S 1, the normally opened contact K-1 of relay K 1 is in parallel with switch S 1, one end be connected with switch S 1 of the former limit inductance coil of transformer T1 forms the input of this circuit and is connected with sub-controller after switch S 1 with the other end, and the two ends of the former limit inductance coil of this transformer T1 also form the output of this circuit and are connected with illuminating lamp simultaneously.
Further, above-mentioned buffering filter circuit is by operational amplifier P1, operational amplifier P2, be serially connected in the resistance R6 between the negative input end of operational amplifier P1 and output, positive pole is connected with the output of operational amplifier P1, the electric capacity C8 that negative pole is connected with the negative input end of operational amplifier P1, one end is connected with the output of operational amplifier P1, the resistance R8 that the other end is connected with the negative input end of operational amplifier P2 after resistance R10, one end is connected with the tie point of resistance R10 with resistance R8, the resistance R9 that the other end is connected with the output of operational amplifier P2, negative pole is connected with the negative input end of operational amplifier P2, the electric capacity C10 that positive pole is connected with the output of operational amplifier P2, minus earth, the electric capacity C11 that positive pole is connected with the positive input terminal of operational amplifier P2 with the positive input terminal of operational amplifier P1 simultaneously, one end is connected with the positive power source terminal of operational amplifier P1, the resistance R7 that the other end is connected with the positive power source terminal of operational amplifier P2 after resistance R11, and minus earth, the electric capacity C9 that positive pole is connected with the tie point of resistance R11 with resistance R7 forms, wherein, the negative power end ground connection of operational amplifier P1, the negative power end ground connection of operational amplifier P2, the positive pole of electric capacity C9 connects+5V power supply, the negative input end of operational amplifier P1 as this circuit input and be connected with the signal output part of sub-controller, the output of operational amplifier P2 as this circuit output and be connected with the input of signal receiving/transmission device.
As preferably, the model of described three terminal regulator IC1 is LM7805, the model of digital circuit IC2 is CD4060, for 14 grades of binary counting/distributors with internal clock pulse oscillator, the model of operational amplifier P1 and operational amplifier P2 is OPA627, and triode VT1 and triode VT2 is NPN type triode.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) image that the present invention can be taken by camera judges the illuminator opening and closing whole underground parking automatically, when without the need to throwing light on, illuminator will be closed, well reduce the power consumption of whole system, not only save electric power resource, also reduce the cost of property and owner, and delay function making illuminating lamp without the need to opening and closing frequently, can be good at the useful life extending illuminating lamp, reduce further the O&M cost of system.
(2) the present invention is provided with Delayed illumination control circuit, the shut-in time of whole system can be postponed after sub-controller closing switch, reduce the keying frequency of illuminating lamp, thus avoid the frequent situation generation opening and closing shortening illuminating lamp useful life, well improve the intelligent of whole system.
(3) the present invention is provided with buffering filter circuit; its pooling feature can better guard signal R-T unit run safety; filter function first can carry out filtering process to signal when the input input signal of signal receiving/transmission device simultaneously; well avoid the interference of clutter, improve the identifiable design rate of signal.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is the circuit diagram of Delayed illumination control circuit of the present invention.
Fig. 3 is the circuit diagram of buffering filter circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention includes central controller, the sub-controller be connected with this central controller, be all connected to the camera on sub-controller, power supply and Delayed illumination control circuit, and be connected to the illuminating lamp on Delayed illumination control circuit; Sub-controller is provided with and makes itself and central controller by the wireless signal receiving/transmission device be connected, the signal transmitting terminal of signal receiving/transmission device is also connected with buffering filter circuit.
During use, first in control room, set up central controller, then the illuminator being provided with sub-controller is laid in underground parking, this central controller can be server, PC computer, industrial computer etc., and sub-controller can be PLC, PC computer, industrial computer, panel computer etc.Connection signal R-T unit on the sub-controller set up, sub-controller can be connected with central controller by signal receiving/transmission device, and in order to make the signal of sub-controller can better identify by central controller, the signal output part of signal receiving/transmission device arranges a buffering filter circuit with the impurity in filtered signal.The illuminator of whole underground parking has then been coordinated with sub-controller by the Delayed illumination control circuit be connected on sub-controller, sub-controller is first by analyzing the photographic images of camera, when having human body in the picture, sub-controller then controls the unlatching that this Delayed illumination control circuit has been communicated with illuminating lamp, the switch of sub-controller then automatically in off delay illumination control circuit when not comprising human body in image, Delayed illumination control circuit cuts out whole illuminator after the delay of certain hour, so save a large amount of electric energy, illuminator can also be avoided to open and close frequently simultaneously, better protect illuminating lamp, improve the useful life of product.
As shown in Figure 2, Delayed illumination control circuit by diode bridge rectifier U1, transformer T1, triode VT1, triode VT2, three terminal regulator IC1, digital circuit IC2, switch S 1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, slide rheostat RP1, diode D1 form.
During connection, the minus earth of electric capacity C1, positive pole is connected with the positive output end of diode bridge rectifier U1, the N pole of diode D1 is connected with the positive pole of electric capacity C1, P pole is connected with the collector electrode of triode VT1, relay K and diode D1 are arranged in parallel, one end of resistance R1 is connected with the N pole of diode D1, the other end is connected with the base stage of triode VT1, one end of resistance R2 is connected with the base stage of triode VT2, the other end is connected with the Q14 pin of digital circuit IC2, the negative pole of electric capacity C4 is connected with the Q14 pin of digital circuit IC2, positive pole is connected with the Vin pin of three terminal regulator IC1 after electric capacity C2, the negative pole of electric capacity C3 is connected with the positive pole of electric capacity C4, positive pole is connected with the Vout pin of three terminal regulator IC1, one end of resistance R3 is connected with the positive pole of electric capacity C3, the other end is connected with the VDD pin of digital circuit IC2, the positive pole of electric capacity C6 is connected with the positive pole of electric capacity C3, negative pole is connected with the RESET pin of digital circuit IC2, the minus earth of electric capacity C7, positive pole is connected with the positive pole of electric capacity C6, the negative pole of electric capacity C5 is connected with the CLOCKOUT2 pin of digital circuit IC2, positive pole is connected with the CLOCKIN pin of digital circuit IC2 after resistance R4, one end of slide rheostat RP1 is connected with the CLOCKOUT1 pin of digital circuit IC2, the other end is connected with the positive pole of electric capacity C5 after resistance R5.Wherein, an input of diode bridge rectifier U1 is connected with any one end of the secondary inductance coil of transformer T1, another input of diode bridge rectifier U1 is connected with the other end of the secondary inductance coil of transformer T1, the negative output terminal ground connection of diode bridge rectifier U1, the grounded emitter of triode VT1, the base stage of triode VT1 is connected with the collector electrode of triode VT2, the grounded emitter of triode VT2, the Vin pin of three terminal regulator IC1 is connected with the N pole of diode D1, its GND pin ground connection, the minus earth of electric capacity C6, the VSS pin ground connection of digital circuit IC2, any one end of the former limit inductance coil of transformer T1 is in series with switch S 1, the normally opened contact K-1 of relay K 1 is in parallel with switch S 1, one end be connected with switch S 1 of the former limit inductance coil of transformer T1 forms the input of this circuit and is connected with sub-controller after switch S 1 with the other end, and the two ends of the former limit inductance coil of this transformer T1 also form the output of this circuit and are connected with illuminating lamp simultaneously.
At sub-controller Closing Switch S1 after-current by three terminal regulator IC1 voltage stabilizing, more digital IC circuit 2 is powered.During initial power supply, the electric capacity C6 of the timer clock generator in digital circuit IC2 first on RESET pin resets and resets, and each output is electronegative potential.When Q14 pin output low level, triode VT2 ends, triode VT1 conducting, and relay K obtains electric its normally opened contact K-1 and closes, and circuit keeps power supply that illuminating lamp is opened.And when after sub-controller cut-off switch S1, digital circuit IC2 carries out timing, when Q14 pin is when timing is to output high level, the state of triode VT1 and triode VT2 switches, wherein triode VT1 ends triode VT2 conducting, relay K power-off and then its contact K-1 is discharged, after relay contact K-1 discharges, circuit supply cuts off, and then illuminating lamp power-off is closed.So just well complete the process of whole delay power-off, reach the effect postponing to turn off the light, well avoid the situation generation that illuminating lamp repeats to open and close the illuminating lamp shortening in useful life caused, reduce frequency of maintenance, improve the result of use of product.
As shown in Figure 3, buffering filter circuit is by operational amplifier P1, and operational amplifier P2, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11 form.
During connection, between the negative input end that resistance R6 is serially connected in operational amplifier P1 and output, the positive pole of electric capacity C8 is connected with the output of operational amplifier P1, negative pole is connected with the negative input end of operational amplifier P1, one end of resistance R8 is connected with the output of operational amplifier P1, the other end is connected with the negative input end of operational amplifier P2 after resistance R10, one end of resistance R9 is connected with the tie point of resistance R10 with resistance R8, the other end is connected with the output of operational amplifier P2, the negative pole of electric capacity C10 is connected with the negative input end of operational amplifier P2, positive pole is connected with the output of operational amplifier P2, the minus earth of electric capacity C11, positive pole is connected with the positive input terminal of operational amplifier P2 with the positive input terminal of operational amplifier P1 simultaneously, one end of resistance R7 is connected with the positive power source terminal of operational amplifier P1, the other end is connected with the positive power source terminal of operational amplifier P2 after resistance R11, the minus earth of electric capacity C9, positive pole is connected with the tie point of resistance R11 with resistance R7, wherein, the negative power end ground connection of operational amplifier P1, the negative power end ground connection of operational amplifier P2, the positive pole of electric capacity C9 connects+5V power supply, the negative input end of operational amplifier P1 as this circuit input and be connected with the signal output part of sub-controller, the output of operational amplifier P2 as this circuit output and be connected with the input of signal receiving/transmission device.
Sub-controller is when sending signal to signal receiving/transmission device; first carry out buffering and filtering process by buffering filter circuit; not only reduce the impact to signal receiving/transmission device; better protect the normal operation of signal receiving/transmission device; can also cross simultaneously and clutter is filtered, substantially increase the discrimination of the wireless signal that signal receiving/transmission device sends.
The model of described three terminal regulator IC1 is LM7805, the model of digital circuit IC2 is CD4060, for 14 grades of binary counting/distributors with internal clock pulse oscillator, the model of operational amplifier P1 and operational amplifier P2 is OPA627, and triode VT1 and triode VT2 is NPN type triode.
As mentioned above, just well the present invention can be realized.
Claims (4)
1. underground parking field buffer filtering type Delayed illumination control system, it is characterized in that: comprise central controller, the sub-controller be connected with this central controller, all be connected to the camera on sub-controller, power supply and Delayed illumination control circuit, and be connected to the illuminating lamp on Delayed illumination control circuit; Sub-controller is provided with and makes itself and central controller by the wireless signal receiving/transmission device be connected, between described signal receiving/transmission device and sub-controller, be also serially connected with buffering filter circuit.
2. underground parking field buffer filtering type Delayed illumination control system according to claim 1, it is characterized in that: described Delayed illumination control circuit is by diode bridge rectifier U1, transformer T1, triode VT1, triode VT2, three terminal regulator IC1, digital circuit IC2, switch S 1, minus earth, the electric capacity C1 that positive pole is connected with the positive output end of diode bridge rectifier U1, N pole is connected with the positive pole of electric capacity C1, the diode D1 that P pole is connected with the collector electrode of triode VT1, the relay K be arranged in parallel with diode D1, one end is connected with the N pole of diode D1, the resistance R1 that the other end is connected with the base stage of triode VT1, one end is connected with the base stage of triode VT2, the resistance R2 that the other end is connected with the Q14 pin of digital circuit IC2, negative pole is connected with the Q14 pin of digital circuit IC2, the electric capacity C4 that positive pole is connected with the Vin pin of three terminal regulator IC1 after electric capacity C2, negative pole is connected with the positive pole of electric capacity C4, the electric capacity C3 that positive pole is connected with the Vout pin of three terminal regulator IC1, one end is connected with the positive pole of electric capacity C3, the resistance R3 that the other end is connected with the VDD pin of digital circuit IC2, positive pole is connected with the positive pole of electric capacity C3, the electric capacity C6 that negative pole is connected with the RESET pin of digital circuit IC2, minus earth, the electric capacity C7 that positive pole is connected with the positive pole of electric capacity C6, negative pole is connected with the CLOCKOUT2 pin of digital circuit IC2, the electric capacity C5 that positive pole is connected with the CLOCKIN pin of digital circuit IC2 after resistance R4, and one end is connected with the CLOCKOUT1 pin of digital circuit IC2, the slide rheostat RP1 that the other end is connected with the positive pole of electric capacity C5 after resistance R5 forms, wherein, an input of diode bridge rectifier U1 is connected with any one end of the secondary inductance coil of transformer T1, another input of diode bridge rectifier U1 is connected with the other end of the secondary inductance coil of transformer T1, the negative output terminal ground connection of diode bridge rectifier U1, the grounded emitter of triode VT1, the base stage of triode VT1 is connected with the collector electrode of triode VT2, the grounded emitter of triode VT2, the Vin pin of three terminal regulator IC1 is connected with the N pole of diode D1, its GND pin ground connection, the minus earth of electric capacity C6, the VSS pin ground connection of digital circuit IC2, any one end of the former limit inductance coil of transformer T1 is in series with switch S 1, the normally opened contact K-1 of relay K 1 is in parallel with switch S 1, one end be connected with switch S 1 of the former limit inductance coil of transformer T1 forms the input of this circuit and is connected with sub-controller after switch S 1 with the other end, and the two ends of the former limit inductance coil of this transformer T1 also form the output of this circuit and are connected with illuminating lamp simultaneously.
3. underground parking field buffer filtering type Delayed illumination control system according to claim 2, it is characterized in that: described buffering filter circuit is by operational amplifier P1, operational amplifier P2, be serially connected in the resistance R6 between the negative input end of operational amplifier P1 and output, positive pole is connected with the output of operational amplifier P1, the electric capacity C8 that negative pole is connected with the negative input end of operational amplifier P1, one end is connected with the output of operational amplifier P1, the resistance R8 that the other end is connected with the negative input end of operational amplifier P2 after resistance R10, one end is connected with the tie point of resistance R10 with resistance R8, the resistance R9 that the other end is connected with the output of operational amplifier P2, negative pole is connected with the negative input end of operational amplifier P2, the electric capacity C10 that positive pole is connected with the output of operational amplifier P2, minus earth, the electric capacity C11 that positive pole is connected with the positive input terminal of operational amplifier P2 with the positive input terminal of operational amplifier P1 simultaneously, one end is connected with the positive power source terminal of operational amplifier P1, the resistance R7 that the other end is connected with the positive power source terminal of operational amplifier P2 after resistance R11, and minus earth, the electric capacity C9 that positive pole is connected with the tie point of resistance R11 with resistance R7 forms, wherein, the negative power end ground connection of operational amplifier P1, the negative power end ground connection of operational amplifier P2, the positive pole of electric capacity C9 connects+5V power supply, the negative input end of operational amplifier P1 as this circuit input and be connected with the signal output part of sub-controller, the output of operational amplifier P2 as this circuit output and be connected with the input of signal receiving/transmission device.
4. underground parking field buffer filtering type Delayed illumination control system according to claim 3, it is characterized in that: the model of described three terminal regulator IC1 is LM7805, the model of digital circuit IC2 is CD4060, for 14 grades of binary counting/distributors with internal clock pulse oscillator, the model of operational amplifier P1 and operational amplifier P2 is OPA627, and triode VT1 and triode VT2 is NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908885.XA CN105472845A (en) | 2015-12-09 | 2015-12-09 | Buffer filter type delay illumination control system for underground parking garage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908885.XA CN105472845A (en) | 2015-12-09 | 2015-12-09 | Buffer filter type delay illumination control system for underground parking garage |
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| Publication Number | Publication Date |
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| CN105472845A true CN105472845A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510908885.XA Withdrawn CN105472845A (en) | 2015-12-09 | 2015-12-09 | Buffer filter type delay illumination control system for underground parking garage |
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| CN (1) | CN105472845A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929844A (en) * | 2013-01-14 | 2014-07-16 | 海洋王（东莞）照明科技有限公司 | Automatic control device for lamp cyclic test |
| CN204392669U (en) * | 2015-03-09 | 2015-06-10 | 四川圣典节能服务有限公司 | Indoor intelligent controls power saving apparatus |
| CN105007674A (en) * | 2015-08-13 | 2015-10-28 | 林育成 | Intelligent lamp control system |
| CN204810638U (en) * | 2015-08-25 | 2015-11-25 | 梅玉刚 | Infrared sensing corridor of solar electric source LED lamp of adjusting luminance |
-
2015
- 2015-12-09 CN CN201510908885.XA patent/CN105472845A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929844A (en) * | 2013-01-14 | 2014-07-16 | 海洋王（东莞）照明科技有限公司 | Automatic control device for lamp cyclic test |
| CN204392669U (en) * | 2015-03-09 | 2015-06-10 | 四川圣典节能服务有限公司 | Indoor intelligent controls power saving apparatus |
| CN105007674A (en) * | 2015-08-13 | 2015-10-28 | 林育成 | Intelligent lamp control system |
| CN204810638U (en) * | 2015-08-25 | 2015-11-25 | 梅玉刚 | Infrared sensing corridor of solar electric source LED lamp of adjusting luminance |
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Application publication date: 20160406 |
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