CN204614417U - A kind of LED display of pure hardware controls luminosity - Google Patents
A kind of LED display of pure hardware controls luminosity Download PDFInfo
- Publication number
- CN204614417U CN204614417U CN201520243797.8U CN201520243797U CN204614417U CN 204614417 U CN204614417 U CN 204614417U CN 201520243797 U CN201520243797 U CN 201520243797U CN 204614417 U CN204614417 U CN 204614417U
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- oscillator
- display
- led display
- brightness
- luminosity
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Abstract
A kind of LED display of pure hardware controls luminosity, comprise display module, oscillator and LED display, it is characterized in that: described display module comprises luminosity sensor and LCD display, described luminosity sensor is connected with LCD display, described LED display is connected with oscillator with display module respectively, described display module is connected with oscillator, and described oscillator is connected with LED display; Described luminosity sensor is for detecting LED display brightness, by LCD display display sensed luminance value, and send brightness value to oscillator, the brightness value of acquisition compared with preset value, when brightness is not equal to preset value, is adjusted PWM dutycycle by oscillator, brightness value is made to be similar to preset value, when brightness value reaches preset value, oscillator frequency is constant, and LED display maintains present intensity.
Description
Technical field
The utility model relates to electronic display technical field, is specifically related to a kind of LED display of pure hardware controls luminosity.
Background technology
Along with LED(Light Emitting Diode, light emitting diode) the developing rapidly of technology, the performance of LED is greatly improved, and it has, and the life-span is long, light efficiency is high, the radiationless advantage with low-power consumption.LED display because its visuality is high, power consumption is little, can freely to assemble and the many merits such as with low cost has been widely applied to the various occasions of billboards, advertisement and daily life, for showing various information.In recent years, along with LED display is all the more extensive in the application of industrial circle, make people all the more strict to the assurance of the light luminance of LED, but prior art is to the assurance degree of the brightness of LED display or not mature enough.For example, when the intensity of illumination of sunshine is larger, if the brightness of display screen is inadequate, then the displaying contents of display screen is then unclear.In sunshine brightness when less or night, if the brightness of display screen is comparatively large, then spectators can be made to feel dazzling, waste electric energy simultaneously.
Utility model content
Not enough for prior art, the utility model provides a kind of LED display of pure hardware controls luminosity, the convenient variation range controlling LED display light luminance, reach actual needs brightness requirement, make LED display more ripe in the use of industrial application, abundanter, enhancing can practicality.
The technical scheme in the invention for solving the above technical problem is: a kind of LED display of pure hardware controls luminosity, comprises display module, oscillator and LED display; Described display module comprises luminosity sensor and LCD display, described luminosity sensor is connected with LCD display, described LED display is connected with oscillator with display module respectively, and described display module is connected with oscillator, and described oscillator is connected with LED display; Described luminosity sensor is for detecting LED display brightness, by LCD display display sensed luminance value, and send brightness value to oscillator, oscillator by the brightness value of acquisition compared with preset value, when brightness is not equal to preset value, adjustment brightness value is similar to preset value, when brightness value reaches preset value, oscillator frequency is constant, and LED display maintains present intensity.
Further, described oscillator is dutycycle adjustable pulse oscillator.
Further, described oscillator PWM(Pulse Width Modulation, pulse-length modulation) range of adjustment is 0-100%.
Further, the dutycycle conditioned circuit that described oscillator is is core with 555 timers.
Further, the dutycycle of described oscillator is regulated by adjustable resistance.
The advantage that the utility model has: produce the PWM ripple in 0 ~ 100% scope by pure hardware circuit, save time and cost; By controlling the variation range of LED display light luminance, reaching actual needs brightness requirement, making LED display more ripe in the use of industrial application, abundanter, enhancing can practicality; The utility model also helps LED display in actual production simultaneously, makes the LED display more geared to actual circumstances, improves the cost performance of product.
Accompanying drawing explanation
Fig. 1 is design frame chart of the present utility model;
Fig. 2 is dutycycle conditioned circuit figure.
Embodiment
Be described further the utility model below in conjunction with accompanying drawing, as shown in Figure 1, 2, the LED display of a kind of pure hardware controls luminosity of the present utility model, comprises display module, oscillator and LED display; Described display module comprises luminosity sensor and LCD display, described luminosity sensor is connected with LCD display, described LED display is connected with oscillator with display module respectively, and described display module is connected with oscillator, and described oscillator is connected with LED display; Described luminosity sensor is for detecting LED display brightness, by LCD display display sensed luminance value, and send brightness value to oscillator, the brightness value of acquisition compared with preset value, when brightness is not equal to preset value, is adjusted PWM dutycycle by oscillator, brightness value is made to be similar to preset value, when brightness value reaches preset value, oscillator frequency is constant, and LED display maintains present intensity.
Described oscillator is dutycycle adjustable pulse oscillator, and described oscillator PWM range of adjustment is 0-100%, and the dutycycle conditioned circuit that described oscillator is is core with 555 timers, the dutycycle of described oscillator is regulated by adjustable resistance.
Claims (5)
1. the LED display of a pure hardware controls luminosity, comprise display module, oscillator and LED display, it is characterized in that: described display module comprises luminosity sensor and LCD display, described luminosity sensor is connected with LCD display, described LED display is connected with oscillator with display module respectively, described display module is connected with oscillator, and described oscillator is connected with LED display; Described luminosity sensor is for detecting LED display brightness, by LCD display display sensed luminance value, and send brightness value to oscillator, the brightness value of acquisition compared with preset value, when brightness is not equal to preset value, is adjusted PWM dutycycle by oscillator, brightness value is made to be similar to preset value, when brightness value reaches preset value, oscillator frequency is constant, and LED display maintains present intensity.
2. the LED display of a kind of pure hardware controls luminosity according to claim 1, is characterized in that: described oscillator is dutycycle adjustable pulse oscillator.
3. the LED display of a kind of pure hardware controls luminosity according to claim 1, is characterized in that: the PWM range of adjustment of described oscillator is 0-100%.
4. the LED display of a kind of pure hardware controls luminosity according to any one of claim 1-3, is characterized in that: the dutycycle conditioned circuit that described oscillator is is core with 555 timers.
5. the LED display of a kind of pure hardware controls luminosity according to claim 4, is characterized in that: the dutycycle of described oscillator is regulated by adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520243797.8U CN204614417U (en) | 2015-04-22 | 2015-04-22 | A kind of LED display of pure hardware controls luminosity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520243797.8U CN204614417U (en) | 2015-04-22 | 2015-04-22 | A kind of LED display of pure hardware controls luminosity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204614417U true CN204614417U (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520243797.8U Expired - Fee Related CN204614417U (en) | 2015-04-22 | 2015-04-22 | A kind of LED display of pure hardware controls luminosity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204614417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978267A (en) * | 2017-11-27 | 2018-05-01 | 苏州惠琪特电子科技有限公司 | A kind of LED display |
-
2015
- 2015-04-22 CN CN201520243797.8U patent/CN204614417U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978267A (en) * | 2017-11-27 | 2018-05-01 | 苏州惠琪特电子科技有限公司 | A kind of LED display |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20160422 |