CN210958883U - Automatic LED brightness adjusting device - Google Patents
Automatic LED brightness adjusting device Download PDFInfo
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- CN210958883U CN210958883U CN201921845808.4U CN201921845808U CN210958883U CN 210958883 U CN210958883 U CN 210958883U CN 201921845808 U CN201921845808 U CN 201921845808U CN 210958883 U CN210958883 U CN 210958883U
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Abstract
The utility model discloses a LED luminance automatic regulating apparatus, include: LED lamp stand, LED, light-resistant cover, control photocell and circuit board, the control photocell through first pin with the circuit board is connected, the light-resistant cover in the control photocell is peripheral, LED is located light-resistant cover top and through the second pin with circuit board electric connection, the fixed cover of LED lamp stand is in LED, light-resistant cover, control photocell and circuit board are peripheral, the circuit board with LED and control photocell electric connection. The utility model discloses an automatic LED brightness adjusting device installs the monitoring photocell and the LED on the circuit board, which has simple structure and small volume; the LED brightness is detected by the monitoring photocell, the LED brightness is automatically adjusted through the operation of the single chip microcomputer, the adjustment is accurate, and the influence of the change of the ambient temperature on the LED luminous intensity is eliminated.
Description
Technical Field
The utility model belongs to the technical field of photoelectric detection, especially, relate to a LED luminance automatic regulating apparatus.
Background
The current market photoelectric detection technology is divided into three types, the first type is that photoelectric detection is directly carried out by using an LED, and detection is carried out by using a constant current control LED light source; the second is to provide the modulated power supply for the LED, and detect the variation of the LED light through the photocell, which has the advantages of shielding the interference of the external natural light; the third one also monitors the brightness of the LED by a photocell, and the signal is used as a compensation operation for absorbance, non-constant brightness control.
The disadvantages of the above-described process are combined as follows:
(1) the change of the brightness of the LED can be directly reflected into a measured value;
(2) the change of temperature can affect the luminous efficiency of the LED;
(3) the reference light introduces non-linearity in the calculation of absorbance.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides a LED luminance automatic regulating apparatus, the luminance of LED lamp is controlled through the luminance that the photocell automated inspection LED lamp and through PID algorithm automatically regulated electric current, has eliminated ambient temperature's change to LED luminous intensity's influence.
In order to achieve the above object, the utility model adopts the following technical scheme:
an automatic LED brightness adjusting device comprises: LED lamp stand, LED, light-resistant cover, control photocell and circuit board, the control photocell through first pin with the circuit board is connected, the light-resistant cover is overlapped and is located the control photocell is peripheral, LED is located light-resistant cover top and through the second pin with circuit board electric connection, the fixed cover of LED lamp stand is in LED, light-resistant cover, control photocell and circuit board are peripheral, the circuit board with LED and control photocell electric connection.
Preferably, the light-proof sleeve is made of light-proof materials and is a hollow cylinder.
The optimization effect brought by the optimization scheme is to avoid the influence of an external environment on the brightness.
More preferably, the bottom of the LED has two second pins, and the two second pins are opened at 180 degrees and extend to the circuit board along the side wall of the light-shielding sleeve respectively.
Preferably, the circuit board comprises a single chip microcomputer, the monitoring photocell is used for automatically detecting the brightness of the LED and transmitting the brightness information to the single chip microcomputer, and the single chip microcomputer is used for calculating a new voltage value according to the brightness information and transmitting a corresponding current value to the LED.
More preferably, the circuit board further comprises an AD controller and a photoelectric conversion circuit, and the photoelectric conversion circuit is configured to convert the luminance information into a voltage analog signal and transmit the voltage analog signal to the single chip microcomputer through the AD controller.
More preferably, the circuit board further includes a DA controller, an AD controller, and a VI conversion circuit, the AD controller is configured to convert the voltage analog signal output by the photoelectric conversion circuit into a voltage digital signal, the single chip microcomputer calculates a new voltage digital signal according to the voltage digital signal output by the AD controller, and transmits the new voltage digital signal to the DA controller, the DA controller is configured to convert the new voltage digital signal into a new voltage analog signal and transmit the new voltage analog signal to the VI conversion circuit, and the VI conversion circuit is configured to convert the new voltage analog signal output by the DA controller into a current analog signal and output the current analog signal to the LED.
More preferably, the single chip microcomputer calculates a new voltage value of the LED through a PID algorithm.
Compared with the prior art, the beneficial effects of the utility model are that:
1. a LED luminance automatic regulating apparatus install control photocell and LED on the circuit board, the structure is retrencied, small.
2. A LED luminance automatic regulating apparatus detect LED luminance and through singlechip operation automatically regulated LED's luminance through monitoring photocell, adjust the accuracy, and eliminated ambient temperature's change to LED luminous intensity's influence.
Drawings
Fig. 1 is a schematic structural view of an automatic LED brightness adjusting device according to the present invention.
Fig. 2 is a logic schematic diagram of an automatic LED brightness adjusting device according to the present invention.
Fig. 3 is a schematic circuit diagram of an automatic LED brightness adjusting device according to the present invention.
The LED lamp comprises a lamp holder, a lamp base and a lamp base, wherein 1, the lamp base is an LED lamp holder; 2. an LED; 3. a light-resistant sleeve; 4. monitoring a photovoltaic cell; 5. a circuit board; 6. a first pin; 7. a second pin; 8. a single chip microcomputer; 9. a DA controller; 10. an AD controller; 11. a VI conversion circuit; 12. a photoelectric conversion circuit.
Detailed Description
For a better understanding of the present invention, the contents of the present invention will be further clarified below with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples.
Examples
In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are all the directions or positional relationships shown on the drawings, and the objects are only for convenience of description of the present invention and simplification of description, and do not indicate or imply that the parts indicated must have a specific direction, be constructed and operated in a specific direction, and thus, are not to be construed as limiting the present invention.
An automatic LED brightness adjusting device comprises: LED lamp stand 1, LED 2, light-resistant cover 3, control photocell 4 and circuit board 5, control photocell 4 is connected with circuit board 5 through first pin 6, it is peripheral that control photocell 4 is located to light-resistant cover 3 covers, LED 2 is located light-resistant cover 3 tops and through second pin 7 and circuit board 5 electric connection, LED lamp stand 1 is fixed to be covered at LED 2, light-resistant cover 3, control photocell 4 and circuit board 5 periphery, circuit board 5 and LED 2 and control photocell 4 electric connection. Two second pins 7 of the LED 2 are opened by 180 degrees and located above the light-shielding sleeve 3, and extend to the circuit board 5 along the side wall of the light-shielding sleeve 3, respectively.
The light-proof sleeve 3 is made of light-proof materials and is a hollow cylinder, so that the luminous intensity of the LED is constant and the LED is not interfered by any external factors.
The circuit board 5 comprises a single chip microcomputer 8, the monitoring photocell 4 is used for automatically detecting the brightness of the LED 2 and transmitting the brightness information to the single chip microcomputer 8, and the single chip microcomputer 8 is used for calculating a new voltage value according to the brightness information and transmitting a corresponding current value to the LED 2. The circuit board 5 further comprises a photoelectric conversion circuit 12, and the photoelectric conversion circuit 12 is used for converting the brightness information into a voltage value and transmitting the voltage value to the single chip microcomputer 8.
The circuit board 5 further comprises a DA controller 9, an AD controller 10 and a VI conversion circuit 11, the AD controller 10 is configured to convert a voltage analog signal output by the photoelectric conversion circuit 12 into a voltage digital signal, the single chip microcomputer 8 calculates a new voltage digital signal according to the voltage digital signal of the AD controller 10 and transmits the new voltage digital signal to the DA controller 9, the DA controller 9 is configured to convert the new voltage digital signal into a new voltage analog signal and transmit the new voltage analog signal to the VI conversion circuit 11, and the VI conversion circuit 11 is configured to convert the new voltage analog signal output by the DA controller 9 into a current analog signal and further output the current analog signal to the LED 2. Wherein, the single chip microcomputer 8 calculates the new voltage value of the LED 2 through a PID algorithm.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An automatic LED brightness adjusting device is characterized by comprising: LED lamp stand, LED, light-resistant cover, control photocell and circuit board, the control photocell through first pin with the circuit board is connected, the light-resistant cover is overlapped and is located the control photocell is peripheral, LED is located light-resistant cover top and through the second pin with circuit board electric connection, the fixed cover of LED lamp stand is in LED, light-resistant cover, control photocell and circuit board are peripheral, the circuit board with LED and control photocell electric connection.
2. The automatic LED brightness adjusting device according to claim 1, wherein the light-shielding sleeve is made of opaque material and is a hollow cylinder.
3. The automatic LED brightness adjusting device according to claim 2, wherein the bottom of the LED has two second pins, and the two second pins are open at 180 degrees and respectively extend to the circuit board along the side wall of the light-shielding sleeve.
4. The automatic LED brightness adjusting device according to claim 1, wherein the circuit board comprises a single chip microcomputer, the monitoring photocell is used for automatically detecting the brightness of the LED and transmitting brightness information to the single chip microcomputer, and the single chip microcomputer is used for calculating a new voltage value according to the brightness information and transmitting a corresponding current value to the LED.
5. The automatic LED brightness adjusting device according to claim 4, wherein the circuit board further comprises a photoelectric conversion circuit, and the photoelectric conversion circuit is used for converting the brightness information into a voltage value and transmitting the voltage value to the single chip microcomputer.
6. The automatic LED brightness adjusting device according to claim 5, wherein the circuit board further includes a DA controller, an AD controller, and a VI converter circuit, the AD controller is configured to convert the voltage analog signal output by the photoelectric converter circuit into a voltage digital signal, the single chip microcomputer calculates a new voltage digital signal according to the voltage digital signal output by the AD controller and transmits the new voltage digital signal to the DA controller, the DA controller is configured to convert the new voltage digital signal into a new voltage analog signal and transmit the new voltage analog signal to the VI converter circuit, and the VI converter circuit is configured to convert the new voltage analog signal output by the DA controller into a current analog signal and further output the current analog signal to the LED.
7. The automatic LED brightness adjusting device according to claim 4, wherein the single chip microcomputer calculates a new LED voltage value through a PID algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845808.4U CN210958883U (en) | 2019-10-30 | 2019-10-30 | Automatic LED brightness adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845808.4U CN210958883U (en) | 2019-10-30 | 2019-10-30 | Automatic LED brightness adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210958883U true CN210958883U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921845808.4U Active CN210958883U (en) | 2019-10-30 | 2019-10-30 | Automatic LED brightness adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210958883U (en) |
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2019
- 2019-10-30 CN CN201921845808.4U patent/CN210958883U/en active Active
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