CN204231708U - The energy-saving LED system of simulated solar irradiation - Google Patents
The energy-saving LED system of simulated solar irradiation Download PDFInfo
- Publication number
- CN204231708U CN204231708U CN201420679261.6U CN201420679261U CN204231708U CN 204231708 U CN204231708 U CN 204231708U CN 201420679261 U CN201420679261 U CN 201420679261U CN 204231708 U CN204231708 U CN 204231708U
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- CN
- China
- Prior art keywords
- power supply
- constant
- current driving
- tunable optical
- driving power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The utility model discloses a kind of energy-saving LED system of simulated solar irradiation, comprise a constant voltage Switching Power Supply, it is characterized in that: described constant voltage Switching Power Supply connects one first tunable optical DC/DC constant-current driving power supply and one second tunable optical DC/DC constant-current driving power supply, described first tunable optical DC/DC constant-current driving power supply connects one first white LED light source module and a single-chip microcomputer, described second tunable optical DC/DC constant-current driving power supply connects one second white LED light source module and described single-chip microcomputer, and described single-chip microcomputer connects a temperature sensor and a color sensor.The utility model employs optical pickocff and monitors the luminous flux and colour temperature that form white light LEDs module, and by the control of single-chip microcomputer, changes the duty ratio of corresponding pwm control signal, and then regulate luminous flux and the colour temperature of white light LEDs module.
Description
Technical field
The utility model relates to field of LED drive, is a kind of energy-saving LED system of simulated solar irradiation specifically.
Background technology
In order to regulate the colour temperature of white light LEDs die set light source, just needing to control separately the drive current of the warm light in white light LEDs module, cold light 2 kinds of LED component, just needing 2 independently constant-current drive circuits.At present, constant-current drive circuit generally all adopts the PWM controller of switching mode to realize, and the adjustment of its drive current is mainly divided into analog regulation mode and PWM regulative mode.
Analog regulation mode utilizes PWM controller to regulate drive current, with the drive current of stable LED, obtains stable output intensity.Feedback control signal due to usual PWM controller is a magnitude of voltage, so analog regulation utilizes one to measure resistance to sample to output driving current, and be converted into feedback voltage signal, by PWM controller stablizing feedback voltage, thus reach the object of stable output driving current.
PWM regulative mode refers to and uses the pulsed drive waveform of particular duty cycle to carry out the mode of driving LED within 1 cycle.The uniform driving current of LED depends on duty ratio and the LED nominal drive current of impulse waveform, when fixed L ED nominal drive current.By changing duty ratio, just can change the uniform driving current of LED, thus change the output light intensity of LED.
Wherein the LED drive chip LT3474 of Linear Techn Inc. is the adjustable LED constant current drived control chip of a kind of output-current rating, under PWM regulative mode, utilizes the duty ratio changing additional pwm signal, can realize the light modulation ratio of 400:1.As shown in Figure 1, wherein additional pwm control signal is applied by PWM pin the typical application circuit of its PWM regulative mode.
Based on different LED module number, light source delivery efficiency as shown in Figure 2.
Utility model content
The purpose of this utility model is the energy-saving LED system providing a kind of simulated solar irradiation.
The technical solution of the utility model is: a kind of energy-saving LED system of simulated solar irradiation, comprise a constant voltage Switching Power Supply, it is characterized in that: described constant voltage Switching Power Supply connects one first tunable optical DC/DC constant-current driving power supply and one second tunable optical DC/DC constant-current driving power supply, described first tunable optical DC/DC constant-current driving power supply connects one first white LED light source module and a single-chip microcomputer, described second tunable optical DC/DC constant-current driving power supply connects one second white LED light source module and described single-chip microcomputer, and described single-chip microcomputer connects a temperature sensor and a color sensor.
In the utility model one embodiment, described first tunable optical DC/DC constant-current driving power supply and the second tunable optical DC/DC constant-current driving power supply are AC/DC constant voltage Switching Power Supplies.
The utility model employs optical pickocff and monitors the luminous flux and colour temperature that form white light LEDs module, and by the control of single-chip microcomputer, changes the duty ratio of corresponding pwm control signal, and then regulate luminous flux and the colour temperature of white light LEDs module.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the typical application circuit of PWM regulative mode.
Fig. 2 is based on different LED module number, light source delivery efficiency schematic diagram.
Fig. 3 is system configuration schematic diagram of the present utility model.
Embodiment
For above-mentioned feature and advantage of the present utility model can be become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below, but the utility model is not limited to this.
As shown in Figure 3, the utility model provides a kind of energy-saving LED system of simulated solar irradiation, comprise a constant voltage Switching Power Supply, described constant voltage Switching Power Supply connects one first tunable optical DC/DC constant-current driving power supply and one second tunable optical DC/DC constant-current driving power supply, described first tunable optical DC/DC constant-current driving power supply connects one first white LED light source module and a single-chip microcomputer, described second tunable optical DC/DC constant-current driving power supply connects one second white LED light source module and described single-chip microcomputer, and described single-chip microcomputer connects a temperature sensor and a color sensor.
Preferably, described first tunable optical DC/DC constant-current driving power supply and the second tunable optical DC/DC constant-current driving power supply are AC/DC constant voltage Switching Power Supplies.
The utility model is in order to light intensity, the colour temperature of stable LED output light, and realize the adjustment of light intensity, colour temperature, devise a kind of white light LEDs module drive circuit, which use optical pickocff to monitor the luminous flux and colour temperature that form white light LEDs module, and by the control of single-chip microcomputer, change the duty ratio of corresponding pwm control signal (i.e. the first tunable optical DC/DC constant-current driving power supply (cold light) and the second tunable optical DC/DC constant-current driving power supply (warm light)), and then regulate luminous flux and the colour temperature of white light LEDs module.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (2)
1. the energy-saving LED system of a simulated solar irradiation, comprise a constant voltage Switching Power Supply, it is characterized in that: described constant voltage Switching Power Supply connects one first tunable optical DC/DC constant-current driving power supply and one second tunable optical DC/DC constant-current driving power supply, described first tunable optical DC/DC constant-current driving power supply connects one first white LED light source module and a single-chip microcomputer, described second tunable optical DC/DC constant-current driving power supply connects one second white LED light source module and described single-chip microcomputer, and described single-chip microcomputer connects a temperature sensor and a color sensor.
2. the energy-saving LED system of simulated solar irradiation according to claim 1, is characterized in that: described first tunable optical DC/DC constant-current driving power supply and the second tunable optical DC/DC constant-current driving power supply are AC/DC constant voltage Switching Power Supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420679261.6U CN204231708U (en) | 2014-11-14 | 2014-11-14 | The energy-saving LED system of simulated solar irradiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420679261.6U CN204231708U (en) | 2014-11-14 | 2014-11-14 | The energy-saving LED system of simulated solar irradiation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204231708U true CN204231708U (en) | 2015-03-25 |
Family
ID=52929750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420679261.6U Expired - Fee Related CN204231708U (en) | 2014-11-14 | 2014-11-14 | The energy-saving LED system of simulated solar irradiation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204231708U (en) |
-
2014
- 2014-11-14 CN CN201420679261.6U patent/CN204231708U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151114 |
|
| EXPY | Termination of patent right or utility model |