CN104596649A - Lighting source color temperature monitoring device - Google Patents
Lighting source color temperature monitoring device Download PDFInfo
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- CN104596649A CN104596649A CN201310528356.8A CN201310528356A CN104596649A CN 104596649 A CN104596649 A CN 104596649A CN 201310528356 A CN201310528356 A CN 201310528356A CN 104596649 A CN104596649 A CN 104596649A
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- light source
- color temperature
- monitoring device
- temperature monitoring
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Abstract
The invention provides a lighting source color temperature monitoring device for monitoring the color temperature change of a lighting source. The lighting source color temperature monitoring device comprises a light sensing detecting element and a comparison unit; the light sensing detecting unit is positioned close to the lighting source to sense and detect light from the light source as well as outputting real-time voltage or real-time current; the comparison unit is connected with the light sensing detecting element to preset corresponding reference voltage or reference current generated by the light sensing detecting element under different color temperatures of the lighting source; the comparison unit is used for comparing the reference voltage or reference current with the real-time voltage or real-time current. The lighting source color temperature monitoring device is able to monitor the color temperature of the lighting source on real time.
Description
Technical field
The present invention relates to a kind of light source color temperature monitoring device, especially a kind of can the light source color temperature monitoring device of Real-Time Monitoring light source color temperature.
Background technology
The color of light source is commonly used this concept of colour temperature and is represented, the color of source emissioning light and black matrix at a certain temperature radiant light form and aspect simultaneously, the temperature of black matrix is called the colour temperature of this light source.Digital camera in order to take pictures realize self-defining white balance function time, need under specific colour temperature (color temperature) environment, test the color table present worth of camera in process of production and write storer, to make user can choice for use.
Although every day has and carries out spot check to the colour temperature of light source when actual production, if but the interference that light source is subject to the other factors such as heat or electricity after the spot check can cause the variation of light source color temperature, in prior art, by the colour temperature in spot check a period of time to obtain average color temperature, but, owing to there is no the device of Real-Time Monitoring light source color temperature, cannot Timeliness coverage light source color temperature variation phenomenon, cause the color table present worth writing into camera all inaccurate, thus the phenomenon that product batch is scrapped can be caused.
Summary of the invention
In view of this, be necessary to provide a kind of can the light source color temperature monitoring device of Real-Time Monitoring light source color temperature.
A kind of light source color temperature monitoring device, the colour temperature being used for monitoring light source changes, described light source color temperature monitoring device comprises Photosensing Units and comparing unit, described Photosensing Units is positioned at and is used for sensing described light source near described light source and emits beam and export real-time voltage or real-time current, described comparing unit connects described Photosensing Units, described comparing unit is preset described Photosensing Units and is produced corresponding reference voltage or reference current when the different-colour of described light source, described reference voltage or reference current and described real-time voltage or real-time current compare by described comparing unit.
Compared to prior art, the light source color temperature monitoring device of the embodiment of the present invention carrys out by Photosensing Units the spectrum that detection light source emits beam, and the colour temperature of spectrum corresponding light source, when there is larger change in the colour temperature of light source, larger change will be there is in the voltage that Photosensing Units exports or electric current, if the colour temperature of light source is unchanged or change is less, Photosensing Units export voltage electric current is unchanged or change less, that is the change of voltage or electric current within the specific limits, the colour temperature of light source meets the requirements, so, light source color temperature pick-up unit only needs a Photosensing Units can detect the real-time colour temperature of light source, circuit structure list, erection cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment of the present invention light source color temperature monitoring device.
Main element symbol description
| Light source color temperature monitoring device | 10 |
| Light source | 20 |
| Power supply | 30 |
| Photosensing Units | 11 |
| Comparing unit | 12 |
| Analytic unit | 13 |
| Display unit | 14 |
| Resistance | 15 |
| Adjustment unit | 16 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Refer to shown in Fig. 1, the light source color temperature monitoring device 10 of the embodiment of the present invention is used for monitoring the temperature of light source 20, and light source 20 provides electric energy by power supply 30.In present embodiment, power supply 30 is direct supply, such as, and battery.
Light source color temperature monitoring device 10 comprises Photosensing Units 11, comparing unit 12, analytic unit 13, display unit 14, resistance 15 and adjustment unit 16.The output of Photosensing Units 11 can be voltage or electric current, in the present embodiment, and Photosensing Units 11 output voltage.
Photosensing Units 11 can be photodiode or phototriode, and by resistance 15 ground connection.In present embodiment, Photosensing Units 11 is photodiode.Photosensing Units 11 is positioned at light source 20 side, the intensity of the light that light source 20 sends, brightness can affect outside the electric signal of Photosensing Units 11 output, the conversion efficiency of the light of Photosensing Units 11 pairs of different wave lengths is different, therefore, when the spectrum (that is colour temperature of light) of the light that light source 20 sends changes, the electric signal that Photosensing Units 11 exports equally also can change, so the spectrum emitted beam by monitoring light source 20 can monitor the colour temperature change of light source 20.Monitoring result is converted to the first voltage and exports to comparing unit 12 by Photosensing Units 11.
Reference voltage level is established in comparing unit 12, this reference voltage level is the magnitude of voltage that light source 20 is corresponding under different-colour, corresponding relation available array (colour temperature between colour temperature, voltage, voltage) represent, such as (2765K, 3.8V), (2768K, 3.808V) ..., (2801K, 3.85V), (2824K, 3.872V) etc.
Comparing unit 12 is connected with Photosensing Units 11 the first magnitude of voltage exported to receive Photosensing Units 11, and the first magnitude of voltage and reference voltage level is compared, and comparative result is exported to analytic unit 13.
The comparative result that analytic unit 13 com-parison and analysis unit 12 exports, judgement is that the first magnitude of voltage (is greater than or less than reference voltage level or in a suitable scope, in other words, analytic unit 13 judges the real-time colour temperature of the light source 20 that Photosensing Units 11 senses and the relation of reference color temperature.
Display unit 14 is used for the judged result of display analysis unit 13, and can be display screen or light emitting diode, light emitting diode comprises red diodes, blue light diode and green diode.
When display unit 14 is light emitting diode, when the first magnitude of voltage is greater than reference voltage level, red diodes is luminous; When first magnitude of voltage is less than reference voltage level, blue light diode is luminous; And the first magnitude of voltage and reference voltage level difference in a suitable scope time, then green diode is luminous.
When display unit 14 is display screen, directly can shows and be greater than, be less than or the state such as normal.
When the first magnitude of voltage is greater than or less than reference voltage level, analytic unit 13 sends control signal to adjustment unit 16, adjustment unit 16 adjusts the voltage that power supply 30 inputs to light source 20 and changes to make the colour temperature of light source 20, and the first magnitude of voltage detected to make Photosensing Units 11 and reference voltage level difference are in a suitable scope.
Light source color temperature monitoring device 10 carrys out by Photosensing Units 11 spectrum that detection light source 20 emits beam, and the colour temperature of spectrum corresponding light source 20, when there is larger change in the colour temperature of light source 20, larger change will be there is in the first voltage that Photosensing Units 11 exports, if the colour temperature of light source 20 is unchanged or change is less, the first voltage that Photosensing Units 11 exports is unchanged or change is less, that is the change of the first voltage within the specific limits, the colour temperature of light source 20 meets the requirements, so, light source color temperature pick-up unit 10 needs a Photosensing Units 11 can detect the real-time colour temperature change of light source 20, circuit structure list, erection cost is low.
Be understandable that, those skilled in the art also can do other change etc. and be used in design of the present invention, as long as it does not depart from technique effect of the present invention in spirit of the present invention.These changes done according to the present invention's spirit, all should be included within the present invention's scope required for protection.
Claims (8)
1. a light source color temperature monitoring device, the colour temperature being used for monitoring light source changes, it is characterized in that, described light source color temperature monitoring device comprises Photosensing Units and comparing unit, described Photosensing Units is positioned at and is used for sensing described light source near described light source and emits beam and export real-time voltage or real-time current, described comparing unit connects described Photosensing Units, described comparing unit is preset described Photosensing Units and is produced corresponding reference voltage or reference current when the different-colour of described light source, described reference voltage or reference current and described real-time voltage or real-time current compare by described comparing unit.
2. light source color temperature monitoring device as claimed in claim 1, it is characterized in that, described Photosensing Units is photodiode or phototriode.
3. light source color temperature monitoring device as claimed in claim 1, is characterized in that, described Photosensing Units is by a resistance eutral grounding.
4. light source color temperature monitoring device as claimed in claim 1, it is characterized in that, described light source color temperature monitoring device comprises analytic unit further, described analytic unit connects described comparing unit, the comparative result of described comparing unit exports to described analytic unit, and described analytic unit judges the relation of described real-time voltage or real-time current and described reference voltage or reference current according to described comparative result.
5. light source color temperature monitoring device as claimed in claim 4, it is characterized in that, described light source color temperature monitoring device comprises adjustment unit further, described analytic unit connects described adjustment unit, and described analytic unit controls according to the relation of described real-time voltage or real-time current and described reference voltage or reference current input voltage or the electric current that described adjustment unit adjusts described light source.
6. light source color temperature monitoring device as claimed in claim 4, it is characterized in that, described light source color temperature monitoring device comprises display unit further, described analytic unit connects display unit, and described display unit is used for showing the relation of described real-time voltage or real-time current and described reference voltage or reference current.
7. light source color temperature monitoring device as claimed in claim 6, it is characterized in that, described display unit is display screen or light emitting diode.
8. light source color temperature monitoring device as claimed in claim 7, it is characterized in that, described light emitting diode comprises blue light diode, green diode and red diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528356.8A CN104596649A (en) | 2013-10-30 | 2013-10-30 | Lighting source color temperature monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528356.8A CN104596649A (en) | 2013-10-30 | 2013-10-30 | Lighting source color temperature monitoring device |
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| CN104596649A true CN104596649A (en) | 2015-05-06 |
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| CN201310528356.8A Pending CN104596649A (en) | 2013-10-30 | 2013-10-30 | Lighting source color temperature monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108124500B (en) * | 2015-09-23 | 2021-12-17 | 伊西康有限责任公司 | Surgical stapler with temperature-based motor control |
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2013
- 2013-10-30 CN CN201310528356.8A patent/CN104596649A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108124500B (en) * | 2015-09-23 | 2021-12-17 | 伊西康有限责任公司 | Surgical stapler with temperature-based motor control |
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Application publication date: 20150506 |