CN110440173A - A kind of intelligent desk lamp with an automatic light meter - Google Patents
A kind of intelligent desk lamp with an automatic light meter Download PDFInfo
- Publication number
- CN110440173A CN110440173A CN201910642649.6A CN201910642649A CN110440173A CN 110440173 A CN110440173 A CN 110440173A CN 201910642649 A CN201910642649 A CN 201910642649A CN 110440173 A CN110440173 A CN 110440173A
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- CN
- China
- Prior art keywords
- illumination
- lighting source
- photosensitive sensor
- controller
- desk lamp
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
- F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention provides a kind of intelligent desk lamp with an automatic light meter, including sequentially connected pedestal, bracket and lighting source, it is provided with the first photosensitive sensor on pedestal, the second photosensitive sensor is provided on lighting source, lighting source is connected with controller；First photosensitive sensor is for acquiring the intensity of illumination in illumination region and being sent to controller；Second photosensitive sensor is for acquiring the intensity of reflected light in illumination region and being sent to controller；Controller is used for colour temperature and illumination according to intensity of illumination and intensity of reflected light control lighting source in illumination region.This intelligent desk lamp with an automatic light meter can adjust automatically illumination and colour temperature, protect the eyesight of user.
Description
Technical field
The present invention relates to intelligent desk lamp technical fields, more particularly to a kind of intelligent desk lamp with an automatic light meter.
Background technique
Eyesight refers to the ability of retina resolution imagery.The quality of eyesight is sentenced by the size of retina resolution imagery ability
It is fixed, however when the refracting media (such as cornea, crystal, vitreum) of eye becomes muddy or there are ametropia (including myopia, remote
Depending on, astigmatism etc.) when, even if the good eye vision of retinal function can still decline.The refracting media nubecula of eye, can be used operation
It treats, and it is ametropia, it needs to be corrected with lens.
It, can retina, iris and cornea etc. to human eye if people learn or work under undesirable light environment for a long time
Different degrees of injury is caused, makes asthenopia be easier to occur, even results in eyesight degradation.
In general, light is improper is caused by light itself in local environment does not conform to just as excessively bright, excessively dark, dazzle etc.,
Since light is improper, it is easy to influence the eyesight of student.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of intelligent desk lamp with an automatic light meter, it can be automatic
Illumination and colour temperature are adjusted, the eyesight of user is protected.
The technical scheme of the present invention is realized as follows:
A kind of intelligent desk lamp with an automatic light meter, including sequentially connected pedestal, bracket and lighting source are set on the pedestal
It is equipped with the first photosensitive sensor, the second photosensitive sensor is provided on the lighting source, the lighting source is connected with control
Device；
First photosensitive sensor is for acquiring the intensity of illumination in illumination region and being sent to the controller；
Second photosensitive sensor is for acquiring the intensity of reflected light in the illumination region and being sent to the control
Device；
The controller is used for according to the intensity of illumination and the intensity of reflected light control illumination light in the illumination region
The colour temperature and illumination in source.
Preferably, the one end of the lighting source far from the bracket is arranged in second photosensitive sensor；
The side of second photosensitive sensor is with light barrier.
Preferably, the light barrier is shaped hollow round table.
Preferably, the light barrier is opaque material.
Preferably, the lighting source is changes in temperature dual-colored LED light source.
Preferably, the duty ratio that the controller passes through change high color temperature brightness pwm signal and low color temperature brightness pwm signal
The sum of, the sum of high color temperature LED constant current driving power and the output electric current of low color temperature LED constant current driving power are controlled, and then adjust
The illumination of changes in temperature dual-colored LED lighting source；By the duty for changing high color temperature brightness pwm signal and low color temperature brightness pwm signal
The ratio between than, the ratio between high color temperature LED constant current driving power and the output electric current of low color temperature LED constant current driving power are controlled, and then adjust
Save the colour temperature of changes in temperature dual-colored LED lighting source.
Intelligent desk lamp with an automatic light meter proposed by the present invention, by the first photosensitive sensor for acquiring in illumination region
Intensity of illumination is simultaneously sent to the controller；Second photosensitive sensor is used to acquire the intensity of reflected light in the illumination region simultaneously
It is sent to the controller；To controller can according in the illumination region intensity of illumination and intensity of reflected light control institute
The colour temperature and illumination for stating lighting source, protect the eyesight of user.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the intelligent desk lamp with an automatic light meter that the embodiment of the present invention proposes.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention proposes a kind of intelligent desk lamp with an automatic light meter, including sequentially connected pedestal
1, bracket 2 and lighting source 3 are provided with the first photosensitive sensor 11 on pedestal 1, the second photosensitive biography are provided on lighting source 3
Sensor 31, lighting source 3 are connected with controller 32；
First photosensitive sensor 11 is for acquiring the intensity of illumination in illumination region 4 and being sent to controller 32；
Second photosensitive sensor 31 is for acquiring the intensity of reflected light in illumination region 4 and being sent to controller 32；
Controller 32 be used for according in illumination region intensity of illumination and intensity of reflected light control lighting source colour temperature and
Illumination.
As it can be seen that the intelligent desk lamp with an automatic light meter that the embodiment of the present invention proposes, by the first photosensitive sensor for acquiring
Intensity of illumination in illumination region is simultaneously sent to controller；Second photosensitive sensor is used to acquire the reflective light intensity in illumination region
It spends and is sent to controller；To which controller can be according to the intensity of illumination and intensity of reflected light control illumination light in illumination region
The colour temperature and illumination in source, protect the eyesight of user.
In a preferred embodiment of the invention, one of lighting source far from bracket is arranged in the second photosensitive sensor
End；The side of second photosensitive sensor is with light barrier 5.
Light barrier is mainly made of light-proof material (black silica gel or pitch etc.), light barrier is arranged photosensitive first
The side of sensor falls into the reflected light in LED specific illumination area in the first photosensitive sensor, avoids overseas reflected light or ring
In border light projection to the light-receiving surface of the second photosensitive sensor, it is ensured that its accuracy to illumination acquisition.
In the present embodiment, light barrier 5 is shaped hollow round table.Light barrier is shaped hollow round table, can be by the second photosensitive biography
The light of sensor side blocks, and light barrier is opaque material.
In a preferred embodiment of the invention, lighting source is changes in temperature dual-colored LED light source.
In the present embodiment, warming up dual-colored LED light source can be with 32 5300K cool white light LED chip and 32 3200K warm whites
LED chip composition.
Controller is by changing high color temperature brightness pwm signal and low color temperature brightness in a preferred embodiment of the invention
The sum of duty ratio of pwm signal controls the output electricity of high color temperature LED constant current driving power and low color temperature LED constant current driving power
The sum of stream, and then the illumination of adjustment of cold/warm dual-colored LED lighting source；It is bright by changing high color temperature brightness pwm signal and low color temperature
The ratio between the duty ratio of pwm signal is spent, the output of high color temperature LED constant current driving power and low color temperature LED constant current driving power is controlled
The ratio between electric current, and then the colour temperature of adjustment of cold/warm dual-colored LED lighting source.
There are two types of common LED dimming modes: simulation dimming mode and PWM dimming mode.
Simulation light modulation: i.e. linearity light adjusting, the brightness of LED light source and the linear proportional relation of LED drive current pass through change
LED drive current adjusts the brightness of LED light source.Can connect a sampling resistor on LED, by adjusting sampling resistor
Resistance value changes LED drive current, and then realizes simulation light modulation；Chip can also be dimmed by dedicated simulation to change LED
Driving current, and then realize simulation light modulation.The advantages of simulation light modulation is linearity height；Stroboscopic phenomenon, reason is not present in LED light source
It is LED drive current is consecutive variations；Additional electromagnetic interference (EMI) and noise will not be introduced.Simulating the shortcomings that dimming is
Dimming scope is relatively narrow, the reason is that the adjustable range of LED drive current is confined to the 10% of maximum current value to the maximum current value
Between (1:10).In addition, since LED light source spectrum is related with LED drive current, the LED drive current meeting of consecutive variations
The colour rendering index and colour temperature for influencing LED light source, cause color offset phenomenon.
PWM light modulation: pulse width modulation (PWM) light modulation (is changed by changing the make-and-break time of LED drive current
The average current of LED light source) brightness of LED light source is adjusted, since human eye has visual persistence, then PWM light modulation is needed with certain
It is kind fast to carry out switching between zero current and maximum LED drive current to being enough to cover the rate of visual flicker.By changing
Become the duty ratio of PWM, and then change the average current of LED light source, finally changes the power (bright dark) of LED light source.PWM light modulation
Advantage is the driving current of LED or is in maximum value or is that zero, LED is always worked under constant current conditions, dimming scope
Greatly；PWM dimming mode, which can be avoided, occurs LED color offset phenomenon in curent change, and colour rendering is preferable.
In the present embodiment, LED constant current driving power can be controlled by the pwm signal that controller exports, and then control
Changes in temperature dual-colored LED light source realizes brightness, the adjustable color of changes in temperature dual-colored LED light source.
Intelligent desk lamp with an automatic light meter proposed by the present invention, by the first photosensitive sensor for acquiring in illumination region
Intensity of illumination is simultaneously sent to controller；Second photosensitive sensor is for acquiring the intensity of reflected light in illumination region and being sent to control
Device processed；To which controller can be according to the colour temperature and photograph of intensity of illumination and intensity of reflected light control lighting source in illumination region
Degree, protects the eyesight of user.
In conclusion following effect at least may be implemented in the embodiment of the present invention:
In embodiments of the present invention, it is used to acquire intensity of illumination and the transmission in illumination region by the first photosensitive sensor
To the controller；Second photosensitive sensor is for acquiring the intensity of reflected light in the illumination region and being sent to the control
Device；To controller can according in the illumination region intensity of illumination and intensity of reflected light control the color of the lighting source
Mild illumination protects the eyesight of user.
Finally, it should be noted that the foregoing is merely presently preferred embodiments of the present invention, it is merely to illustrate skill of the invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (6)
1. a kind of intelligent desk lamp with an automatic light meter, including sequentially connected pedestal, bracket and lighting source, which is characterized in that institute
It states and is provided with the first photosensitive sensor on pedestal, the second photosensitive sensor, the lighting source are provided on the lighting source
It is connected with controller；
First photosensitive sensor is for acquiring the intensity of illumination in illumination region and being sent to the controller；
Second photosensitive sensor is for acquiring the intensity of reflected light in the illumination region and being sent to the controller；
The controller be used for according in the illumination region intensity of illumination and intensity of reflected light control the lighting source
Colour temperature and illumination.
2. intelligent desk lamp with an automatic light meter as described in claim 1, which is characterized in that the second photosensitive sensor setting exists
The one end of the lighting source far from the bracket；
The side of second photosensitive sensor is with light barrier.
3. intelligent desk lamp with an automatic light meter as claimed in claim 2, which is characterized in that the light barrier is shaped hollow round table.
4. intelligent desk lamp with an automatic light meter as claimed in claim 3, which is characterized in that the light barrier is opaque material.
5. intelligent desk lamp with an automatic light meter as described in claim 1, which is characterized in that the lighting source is that changes in temperature are double-colored
LED light source.
6. intelligent desk lamp with an automatic light meter as claimed in claim 5, which is characterized in that the controller is by changing high color temperature
The sum of the duty ratio of brightness pwm signal and low color temperature brightness pwm signal controls high color temperature LED constant current driving power and low color temperature
The sum of output electric current of LED constant current driving power, and then the illumination of adjustment of cold/warm dual-colored LED lighting source；By changing high color
The ratio between the duty ratio of warm brightness pwm signal and low color temperature brightness pwm signal controls high color temperature LED constant current driving power and low color
The ratio between the output electric current of warm LED constant current driving power, and then the colour temperature of adjustment of cold/warm dual-colored LED lighting source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642649.6A CN110440173A (en) | 2019-07-16 | 2019-07-16 | A kind of intelligent desk lamp with an automatic light meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642649.6A CN110440173A (en) | 2019-07-16 | 2019-07-16 | A kind of intelligent desk lamp with an automatic light meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110440173A true CN110440173A (en) | 2019-11-12 |
Family
ID=68430576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910642649.6A Pending CN110440173A (en) | 2019-07-16 | 2019-07-16 | A kind of intelligent desk lamp with an automatic light meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110440173A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996468A (en) * | 2019-12-27 | 2020-04-10 | 科大讯飞股份有限公司 | Dimming method and device, dimming system and storage medium |
| CN111065183A (en) * | 2019-12-31 | 2020-04-24 | 广东晶科电子股份有限公司 | Method and system for controlling illumination intensity of LED table lamp |
| CN113260126A (en) * | 2021-04-19 | 2021-08-13 | 青岛海尔空调器有限总公司 | Illumination control method, illumination device and air conditioner indoor hanging machine |
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| US20130293149A1 (en) * | 2012-03-22 | 2013-11-07 | Herbert Waldmann Gmbh & Co. Kg | Intelligent lighting device with multiple luminaires, in particular free-standing luminaires or desk-mounted luminaires and a method for operating a lighting device of this type |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996468A (en) * | 2019-12-27 | 2020-04-10 | 科大讯飞股份有限公司 | Dimming method and device, dimming system and storage medium |
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| CN111065183B (en) * | 2019-12-31 | 2023-07-25 | 广东晶科电子股份有限公司 | Method and system for controlling illumination intensity of LED table lamp |
| CN113260126A (en) * | 2021-04-19 | 2021-08-13 | 青岛海尔空调器有限总公司 | Illumination control method, illumination device and air conditioner indoor hanging machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191112 |
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| RJ01 | Rejection of invention patent application after publication |