CN201651973U - LED eye-protection lamp with accurately controlled illumination - Google Patents
LED eye-protection lamp with accurately controlled illumination Download PDFInfo
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- CN201651973U CN201651973U CN2010201249540U CN201020124954U CN201651973U CN 201651973 U CN201651973 U CN 201651973U CN 2010201249540 U CN2010201249540 U CN 2010201249540U CN 201020124954 U CN201020124954 U CN 201020124954U CN 201651973 U CN201651973 U CN 201651973U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 14
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- 238000001514 detection method Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
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Abstract
The utility model relates to an LED eye-protection lamp with accurately controlled illumination, comprising a power supply, a three-passage high-power LED constant-current driver DD313, a keying circuit, a digital tube, a color LED indicator lamp, a singlechip, a detection circuit and a high-power LED. The singlechip is electrically connected with the three-passage high-power LED constant-current driver DD313, the three-passage high-power LED constant-current driver DD313 is electrically connected with the high-power LED, the keying circuit is electrically connected with the singlechip, the singlechip is respectively and electrically connected with the digital tube, the color LED indicator lamp and the detection circuit, and the detection circuit comprises a photoelectric conversion device and an auxiliary circuit which comprises an amplifier circuit. The LED eye-protection lamp with accurately controlled illumination can ensure that the illumination needed in various places reach the requirements of the international and national standards and can save electric energy to the maximum extent.
Description
Technical field
The utility model relates to a kind of LED light fixture, the especially a kind of LED eye-protecting lamp that can accurately control illumination.
Background technology
Though the brightness of the light fixture on the market is adjustable, but great majority adopt manual adjustments, and accuracy is not high, though the part light fixture has automatically steady light function, but can not accurately provide illumination, can only guarantee that photo detector signal is basicly stable, the user can not accurately learn illumination, more can not allow illumination remain on certain value accurately.Yet, usually indicate that in some standards both domestic and external some place illumination must reach certain requirement, as classroom, garage, road surface etc., present light fixture can not meet the demands.
Summary of the invention
In order to solve an above-mentioned difficult problem, the purpose of this utility model is to provide a kind of LED eye-protecting lamp that can accurately control illumination, this light fixture can detect illumination automatically and show by charactron, the user can manually set illumination, if because other factors causes illumination not reach customer requirements, circuit can be regulated the brightness of lamp automatically, makes illumination get back to user's setting value, if illumination is regulated failure, can provide alarm signal.Circuit can be remembered the brightness value that the user sets, and also can remember the operating current of light source.The user can select to allow light source maintain the operating current of appointment, still maintains the brightness value of appointment.
This light fixture comprises power supply, triple channel great power LED constant-flow driver DD313, key circuit, charactron, color LED indicator lamp, single-chip microcomputer, testing circuit, great power LED.Single-chip microcomputer is electrically connected with triple channel great power LED constant-flow driver DD313, great power LED constant-flow driver DD313 is electrically connected with great power LED, key circuit is electrically connected with single-chip microcomputer, single-chip microcomputer is electrically connected with charactron, single-chip microcomputer is electrically connected with the color LED indicator lamp, testing circuit is electrically connected with single-chip microcomputer, and testing circuit comprises electrooptical device and auxiliary circuit, and auxiliary circuit comprises amplifying circuit.
The single-chip microcomputer model is STC12C5604AD, and operating frequency is 12MHz.
The electrooptical device model is PN23CV, and the output port of the second level amplifier of testing circuit is electrically connected with single-chip microcomputer analog-to-digital conversion interface ADC2.
Shift knob S1, the S2 of key circuit, S3 are electrically connected with P3.0, P1.1, the P3.7 port of single-chip microcomputer respectively.
Single-chip microcomputer the 11st pin is electrically connected with 3,4,5 pins of DD313.
Single-chip microcomputer: the brightness value that the memory user sets and the operating current of great power LED, selection according to the user, single-chip microcomputer maintains the operating current of appointment by light source or maintains the brightness value of appointment, represent that with lock flag the user selects to lock illumination and still locks operating current, receive the input signal of key circuit, the illumination intensity signal of receiving test circuit input, send and show that signal is to charactron, change brightness value and the operating current remembered in the single-chip microcomputer, send control signal and give DD313, change the electric current of LED; Regulate in illumination under the condition of failure, control red LED indicator lamp sends alarm signal.
Key circuit: user's adjusting action is converted to the signal of telecommunication, gives single-chip microcomputer.The user selects locking illumination still to lock operating current by key circuit, regulates illumination by key circuit.
Testing circuit: comprise electrooptical device PN23CV, auxiliary circuit etc., can accurately detect illumination intensity signal, give single-chip microcomputer with signal.
Charactron: receive the demonstration signal that single-chip microcomputer sends, show brightness value.
The color LED indicator lamp: represent to have locked illumination with green indicating lamp bright, the expression of going out of green indicating lamp has locked electric current, represents that illumination is regulated and fails with red led is bright.
DD313 and great power LED: single-chip microcomputer is controlled DD313 with pwm signal, the corresponding PWM current drives of the output of DD313 great power LED, the dutycycle of pwm control signal is exactly the dutycycle of output current, the single-chip microcomputer storage inside dutycycle of control signal, reflected the drive current of great power LED.
The beneficial effects of the utility model are: can control illumination accurately, make various places satisfy the various worlds, domestic standard requirement, and save electric energy to greatest extent.
For to further understanding of the present utility model, will be by the utility model being described in conjunction with following accompanying drawing.
Description of drawings
Fig. 1 is a kind of theory diagram that can accurately control the LED eye-protecting lamp of illumination of the utility model.
Wherein: 1. single-chip microcomputer, 2. triple channel great power LED constant-flow driver DD313,3. charactron SR420561K, 4. color LED indicator lamp, 5. key circuit, 6. testing circuit, 7. great power LED.
Fig. 2 is a kind of circuit theory diagrams that can accurately control the LED eye-protecting lamp of illumination of the utility model.
The specific embodiment
The utility model is described in further detail with concrete enforcement below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2, a kind of LED eye-protecting lamp that can accurately control illumination comprises power supply, triple channel great power LED constant-flow driver DD313, key circuit, charactron SR420561K, color LED indicator lamp, single-chip microcomputer, testing circuit, great power LED.
Single-chip microcomputer is selected STC12C5604AD for use, packing forms SOP-28, and operating frequency is 12MHz; Represent to have locked illumination with green indicating lamp bright, the expression of going out of green indicating lamp has locked electric current, regulate failure with the bright illumination of representing of red led, wherein red led connects single-chip microcomputer P3.3 port (9 pin), and green indicating lamp connects single-chip microcomputer P3.4 port (10 pin); Shift knob S1, the S2 of key circuit, S3 connect P3.0 (4 pin), P1.1 (19 pin), the P3.7 port (17 pin) of single-chip microcomputer respectively; Detection module is to be made of the photocell PN23CV that has optical filter, two stage amplifer OP07CP, wherein, the output port of the second level amplifier of detection module meets single-chip microcomputer analog-to-digital conversion interface ADC2 (20 pin), reduce the influence of high frequency clutter by electric capacity, make the output result of testing circuit approach the mean value of ambient light illumination; 12,9,8,6,1,2,3,4,5,7,10,11 pins of charactron SR420561K connect single-chip microcomputer respectively to P1.4 (22 pin), P1.5 (23 pin), P1.6 (24 pin), P1.7 (25 pin), P2.0 (26 pin), P2.1 (27 pin), P2.2 (1 pin), P2.3 (2 pin), P2.4 (12 pin), P2.5 (13 pin), P2.6 (15 pin), P2.7 (16 pin); The P3.5 of single-chip microcomputer (11 pin) all joins with ENR (3 pin), ENG (4 pin), the ENB port (5 pin) of DD313.
The user can select whether lock illumination by button S1, presses switch S 1, and single-chip microcomputer P3.0 port (4 pin) will be accepted a pulse, single-chip microcomputer puts 1 with lock flag, expression locking illumination, green LED lamp is bright, presses switch S 1 once more, single-chip microcomputer puts 0 with lock flag, the expression lock current, green LED lamp goes out, and the user presses S1 repeatedly, system changes between locking illumination and lock current repeatedly, green LED lamp light on and off repeatedly.
Button S2 links to each other with single-chip microcomputer P1.1 port (19 pin), the user can increase illumination by button S2, under the situation of locking illumination, whenever by a S2, illumination increases by 10 luxs, under the situation of lock current, whenever by a S2, the high level time of giving each PWM ripple of DD313 prolongs 1/6291456 second.
Button S3 links to each other with single-chip microcomputer P3.7 port (17 pin), and the user can reduce illumination by button S3, and the concrete course of work is similar to S2.
Under the situation of lock current, charactron SR420561K only shows actual illumination, and under locking illumination situation, charactron shows the brightness value that actual brightness value and user set in turn.
Under the situation of locking illumination, when the ambient light grow, the total illumination of surround lighting and light fixture increases, the output current of photocell PN23CV, voltage increase, signal after amplifier OP07CP two-stage is amplified is sent into Chip Microcomputer A C2 port (20 pin), and single-chip microcomputer is exported corresponding PWM ripple by 11 pins, control triple channel great power LED constant-flow driver DD313, make the brightness deterioration of light fixture, keep total illumination constant; Same when surround lighting dies down, also can keep total illumination constant; When system can not be adjusted to the user with illumination and sets value in 5 seconds, red led was bright.
The utility model adopts the 1W large-power LED light bead, and the forward voltage of each lamp pearl is 3.5V, and lighting operating current is 350mA, utilizes triple channel great power LED constant-flow driver DD313, adopts three-channel parallel output.
To achieve these goals, the utility model provides a kind of working method, and is as follows:
(a) power on initialization;
(b) single-chip microcomputer reads the illumination of memory, the operating current and the lock flag of great power LED, represents the operating current of great power LED with the dutycycle of control signal;
(c) the memory based operating current control of single-chip microcomputer power circuit drives great power LED, represents whether locked brightness value with the light on and off of green LED lamp;
(d) testing circuit detects actual brightness value;
(e) if do not lock brightness value, then electric light source is with the operating current of memory, and charactron shows actual brightness value, if red indicator lamp is bright, then allows red indicator lamp go out;
(f) if locked illumination, charactron shows the actual brightness value and the brightness value of memory in turn:
Single-chip microcomputer compares with the illumination of memory and actual brightness value, judges whether to adjust brightness value;
If do not need to adjust illumination, with the zero clearing of single-chip microcomputer internal timer, and stop timing, if red indicator lamp is bright, then allow red indicator lamp go out;
Adjust illumination if desired, earlier export corresponding signal to power circuit by single-chip microcomputer, regulate electric light source brightness, simultaneously with the operating current of current operating current as memory, then, judge whether the single-chip microcomputer internal timer reaches the fixed time, if reach the fixed time, show in system at the appointed time to be difficult to reach illumination requirement, then red led is bright;
(g) single-chip microcomputer detects whether the push button signalling input is arranged
If customer requirements changes lock flag, then change the lock flag of memory, if will lock illumination transfers the locking operating current to, then single-chip microcomputer internal timer zero clearing, and stop timing;
Under the situation of locking illumination, if customer requirements is regulated illumination, single-chip microcomputer changes the brightness value of memory, and timer resets and picks up counting;
Under the situation of locking operating current, if customer requirements is regulated brightness, single-chip microcomputer changes the operating current of memory, the i.e. dutycycle of control signal;
(h) get back to step (b).
Claims (5)
1. the LED eye-protecting lamp that can accurately control illumination, comprise power supply, triple channel great power LED constant-flow driver DD313, key circuit, charactron, the color LED indicator lamp, single-chip microcomputer, testing circuit, great power LED, it is characterized in that: single-chip microcomputer is electrically connected with triple channel great power LED constant-flow driver DD313, great power LED constant-flow driver DD313 is electrically connected with great power LED, key circuit is electrically connected with single-chip microcomputer, single-chip microcomputer is electrically connected with charactron, single-chip microcomputer is electrically connected with the color LED indicator lamp, testing circuit is electrically connected with single-chip microcomputer, testing circuit comprises electrooptical device and auxiliary circuit, and auxiliary circuit comprises amplifying circuit.
2. a kind of LED eye-protecting lamp that can accurately control illumination according to claim 1, it is characterized in that: the single-chip microcomputer model is STC12C5604AD, operating frequency is 12MHz.
3. a kind of LED eye-protecting lamp that can accurately control illumination according to claim 1, it is characterized in that: the electrooptical device model is PN23CV, the output port of the second level amplifier of testing circuit is electrically connected with single-chip microcomputer analog-to-digital conversion interface ADC2.
4. a kind of LED eye-protecting lamp that can accurately control illumination according to claim 1 is characterized in that: shift knob S1, the S2 of key circuit, S3 are electrically connected with P3.0, P1.1, the P3.7 port of single-chip microcomputer respectively.
5. a kind of LED eye-protecting lamp that can accurately control illumination according to claim 1 is characterized in that: single-chip microcomputer the 11st pin is electrically connected with 3,4,5 pins of DD313.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201249540U CN201651973U (en) | 2010-02-02 | 2010-02-02 | LED eye-protection lamp with accurately controlled illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201249540U CN201651973U (en) | 2010-02-02 | 2010-02-02 | LED eye-protection lamp with accurately controlled illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201651973U true CN201651973U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201249540U Expired - Fee Related CN201651973U (en) | 2010-02-02 | 2010-02-02 | LED eye-protection lamp with accurately controlled illumination |
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| Country | Link |
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| CN (1) | CN201651973U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104684181A (en) * | 2013-12-03 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Adjustable three-channel high-power LED (light-emitting diode) drive circuit |
| CN106817807A (en) * | 2017-03-03 | 2017-06-09 | 广东星美灿照明科技股份有限公司 | A kind of method of the brightness regulation of electric light |
-
2010
- 2010-02-02 CN CN2010201249540U patent/CN201651973U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104684181A (en) * | 2013-12-03 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Adjustable three-channel high-power LED (light-emitting diode) drive circuit |
| CN106817807A (en) * | 2017-03-03 | 2017-06-09 | 广东星美灿照明科技股份有限公司 | A kind of method of the brightness regulation of electric light |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20140202 |