CN104422868A - Resistance measuring system and method of LED (Light Emitting Diode) current limiting resistor - Google Patents
Resistance measuring system and method of LED (Light Emitting Diode) current limiting resistor Download PDFInfo
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- CN104422868A CN104422868A CN201310398667.7A CN201310398667A CN104422868A CN 104422868 A CN104422868 A CN 104422868A CN 201310398667 A CN201310398667 A CN 201310398667A CN 104422868 A CN104422868 A CN 104422868A
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Abstract
The invention provides a resistance measuring system and method of an LED (Light Emitting Diode) current limiting resistor. The system comprises a single-chip microprocessor, a digital potentiometer, an LED socket, a brightness sensor and a display screen, wherein the digital potentiometer is used as the LED current limiting resistor; the LED socket is connected with the digital potentiometer and is used for plugging an LED to connect the LED with the digital potentiometer in series; the single-chip microprocessor comprises a control module and a memory module; the control module is used for receiving input LED brightness range values corresponding to different wavelengths and storing in the memory module; the brightness sensor is used for receiving light emitted by the LED and transmitting a light wavelength current value and a brightness current value to the control module; the control module is used for judging whether the current brightness value is equal to a brightness reference value according to the light wavelength current value and displaying a resistance value of the digital potentiometer on the display screen after judging that the current brightness value is equal to the brightness reference value.
Description
Technical field
The present invention relates to a kind of test macro, refer to a kind of resistance test macro and method of LED current-limiting resistance especially.
Background technology
LED(light emitting diode) be one of industry that development is the swiftest and the most violent at present, its high brightness, low energy consumption, long-life feature are in the widespread use of each field.But the photoelectricity property difference of LED often causes multiple LED combination (LED screen) to occur that brightness is inconsistent, destroy white balance, reduce display quality.Usually, before design LED screen, to need LED to be placed in side circuit thus to regulate the resistance of the current-limiting resistance of LED, to meet the needs of LED.In testing, need the resistance of artificial adjustment current-limiting resistance, certainly will testing efficiency be have impact on.
Summary of the invention
In view of above content, be necessary resistance test macro and the method for the LED current-limiting resistance providing a testing efficiency high.
A kind of resistance test macro of LED current-limiting resistance, comprise a single-chip microcomputer, one as the digital regulation resistance of LED current-limiting resistance, the LED socket of the described digital regulation resistance of one connection, one luminance sensor and a display screen, described LED socket is used for grafting one LED and described LED is connected with described digital regulation resistance, described single-chip microcomputer comprises a control module and a memory module, described control module is for receiving the LED luminance value range of the corresponding Different lightwave length of input and storing described LED luminance value range in described memory module, described luminance sensor is for the light that receives described LED and send and an optical wavelength currency and a brightness currency are sent to described control module, described control module is used for judging whether described present intensity value equals the brightness reference value in the LED luminance value range of corresponding described optical wavelength currency according to described optical wavelength currency, judging after described present intensity value equals described brightness reference value, the resistance of described digital regulation resistance to be shown on described display screen.
Further, described control module is used for judging the resistance heightening described digital regulation resistance after present intensity value is greater than described brightness reference value, then another present intensity value again received from described luminance sensor judges.
Further, described control module is used for judging the resistance turning down described digital regulation resistance after present intensity value is less than described brightness reference value, then another present intensity value again received from described luminance sensor judges.
Further, the resistance test macro of described LED current-limiting resistance also comprises an input media, and described input media is for inputting the long LED luminance value range of described corresponding Different lightwave to described control module.
Further, described brightness reference value is the mean value of the maxima and minima in described LED luminance value range.
A kind of resistance method of testing of LED current-limiting resistance, be applied in the resistance test macro of a LED current-limiting resistance, the resistance test macro of described LED current-limiting resistance comprises a single-chip microcomputer, and connects the LED socket of described digital regulation resistance, a luminance sensor and a display screen as the digital regulation resistance, of LED current-limiting resistance, described LED socket grafting one LED and described LED is connected with described digital regulation resistance, the resistance method of testing of described LED current-limiting resistance comprises:
Described single-chip microcomputer receives and stores the LED luminance value range of the corresponding Different lightwave length of input;
Described luminance sensor receives light that described LED sends and sends an optical wavelength currency and a brightness currency to described single-chip microcomputer;
According to described optical wavelength currency, described single-chip microcomputer judges whether described present intensity value equals the brightness reference value in the LED luminance value range of corresponding described optical wavelength currency, judging the resistance of described digital regulation resistance to be shown on described display screen after described present intensity value equals described brightness reference value.
Further, described single-chip microcomputer is judging the resistance heightening described digital regulation resistance after present intensity value is greater than described brightness reference value, then another present intensity value again received from described luminance sensor judges.
Further, described single-chip microcomputer is judging the resistance turning down described digital regulation resistance after present intensity value is less than described brightness reference value, then another present intensity value again received from described luminance sensor judges.
Further, the LED luminance value range that described corresponding Different lightwave is long inputs to described single-chip microcomputer by an input media.
Further, described brightness reference value is the mean value of the maxima and minima in described LED luminance value range.
Hinge structure, described luminance sensor receives the light of LED, described single-chip microcomputer judges that the size passing present intensity value and the brightness reference value of coming from luminance sensor determines whether to adjust the resistance size of digital regulation resistance, and satisfactory resistance be shown on display screen, thus determine the resistance of the current-limiting resistance that LED needs.The resistance efficiency of the resistance test macro of described LED current-limiting resistance and method test LED current-limiting resistance is high.
Accompanying drawing explanation
Fig. 1 is the connection layout of the resistance test macro of a LED current-limiting resistance in embodiments of the present invention.
Fig. 2 is the process flow diagram of the resistance method of testing of a LED current-limiting resistance in embodiments of the present invention.
Main element symbol description
| Single-chip microcomputer | 10 |
| Memory module | 11 |
| Control module | 13 |
| Input media | 20 |
| Digital regulation resistance | 30 |
| LED socket | 40 |
| Luminance sensor | 50 |
| Display screen | 60 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, in one embodiment of the present invention, the resistance test macro of a LED current-limiting resistance comprises single-chip microcomputer 10, input media 20, digital regulation resistance 30, LED socket 40, luminance sensor 50 and a display screen 60.Described input media 20 is a keyboard.Described digital regulation resistance 30 connects described LED socket 40, and described LED socket 40 plugs a LED and realizes connecting with described digital regulation resistance 30.Described digital regulation resistance 30 is as LED current-limiting resistance.
Described single-chip microcomputer 10 comprises memory module 11 and a control module 13.
Described input media 20 is for inputting the long LED luminance value range of corresponding Different lightwave; Such as, optical wavelength is red light wavelength value, then corresponding described ruddiness has a LED luminance value range, if green glow, then has another LED luminance value range.
In actual test process, described LED luminance value range and described optical wavelength reference value for receiving described LED luminance value range and described optical wavelength reference value, and are stored in described memory module 11 by described control module 13.
Described control module 13 makes described digital regulation resistance 30 have described resistance preset value for a resistance preset value is sent to described digital regulation resistance 30.Described luminance sensor 50 is for receiving the light of described LED and sending an optical wavelength currency and a present intensity value to described control module 13.
According to optical wavelength currency, described control module 13 judges whether described present intensity value equals the brightness reference value in the LED luminance value range of corresponding described optical wavelength currency, thus determine the resistance whether adjusting described digital regulation resistance 30.
If present intensity value equals described brightness reference value, described control module 13 shows the current resistance of described digital regulation resistance on described display screen 60; If present intensity value is greater than described brightness reference value, described control module 13 heightens the resistance of described digital regulation resistance, again another present intensity value received again from described luminance sensor 50 judges, until the brightness value received equals described brightness reference value; If present intensity value is less than described brightness reference value, described control module 13 turns down the resistance of described digital regulation resistance, again another present intensity value received again from described luminance sensor 50 judges, until the brightness value received equals described brightness reference value.Described reference value is the mean value of the maxima and minima in described LED luminance value range.
Refer to Fig. 2, in one embodiment of the present invention, the resistance method of testing of a LED current-limiting resistance comprises:
S201, the control module 13 of described single-chip microcomputer 10 receives the LED luminance value range of the corresponding Different lightwave length of described input media 20 input;
S202, described luminance sensor 50 receives light that described LED sends and sends an optical wavelength currency and a brightness currency to described control module 13;
S203, according to optical wavelength currency, described control module 13 judges whether described present intensity value equals the brightness reference value in the LED luminance value range of corresponding described optical wavelength currency, thus determine the resistance whether adjusting described digital regulation resistance 30; If present intensity value equals described brightness reference value, described control module 13 shows the current resistance of described digital regulation resistance on described display screen 60; If present intensity value is greater than described brightness reference value, described control module 13 heightens the resistance of described digital regulation resistance, more again receives another present intensity value from described luminance sensor 50, until the brightness value received equals described brightness reference value; If present intensity value is less than described brightness reference value, described control module 13 turns down the resistance of described digital regulation resistance, until the brightness value received equals described brightness reference value.
Described luminance sensor 50 receives the light of LED, described single-chip microcomputer 10 judges that the size passing present intensity value and the brightness reference value of coming from described luminance sensor 50 determines whether to adjust the resistance size of described digital regulation resistance 30, and satisfactory resistance be shown on described display screen 60, thus determine the resistance of the current-limiting resistance that LED needs.
To one skilled in the art, can combine according to scheme of the invention of the present invention and inventive concept the actual needs produced and make other change accordingly or adjustment, and these change and adjustment all should belong to scope disclosed in this invention.
Claims (10)
1. the resistance test macro of a LED current-limiting resistance, comprise a single-chip microcomputer, one as the digital regulation resistance of LED current-limiting resistance, the LED socket of the described digital regulation resistance of one connection, one luminance sensor and a display screen, described LED socket is used for grafting one LED and described LED is connected with described digital regulation resistance, described single-chip microcomputer comprises a control module and a memory module, described control module is for receiving the LED luminance value range of the corresponding Different lightwave length of input and storing described LED luminance value range in described memory module, described luminance sensor is for the light that receives described LED and send and an optical wavelength currency and a brightness currency are sent to described control module, described control module is used for judging whether described present intensity value equals the brightness reference value in the LED luminance value range of corresponding described optical wavelength currency according to described optical wavelength currency, judging after described present intensity value equals described brightness reference value, the resistance of described digital regulation resistance to be shown on described display screen.
2. the resistance test macro of LED current-limiting resistance as claimed in claim 1, it is characterized in that: described control module is used in the resistance judging to heighten after present intensity value is greater than described brightness reference value described digital regulation resistance, then another present intensity value again received from described luminance sensor judges.
3. the resistance test macro of LED current-limiting resistance as claimed in claim 1, it is characterized in that: described control module is used in the resistance judging to turn down after present intensity value is less than described brightness reference value described digital regulation resistance, then another present intensity value again received from described luminance sensor judges.
4. the resistance test macro of LED current-limiting resistance as claimed in claim 1, it is characterized in that: the resistance test macro of described LED current-limiting resistance also comprises an input media, described input media is for inputting the long LED luminance value range of described corresponding Different lightwave to described control module.
5. the resistance test macro of LED current-limiting resistance as claimed in claim 1, is characterized in that: described brightness reference value is the mean value of the maxima and minima in described LED luminance value range.
6. the resistance method of testing of a LED current-limiting resistance, be applied in the resistance test macro of a LED current-limiting resistance, the resistance test macro of described LED current-limiting resistance comprises a single-chip microcomputer, and connects the LED socket of described digital regulation resistance, a luminance sensor and a display screen as the digital regulation resistance, of LED current-limiting resistance, described LED socket grafting one LED and described LED is connected with described digital regulation resistance, is characterized in that: the resistance method of testing of described LED current-limiting resistance comprises:
Described single-chip microcomputer receives and stores the LED luminance value range of the corresponding Different lightwave length of input;
Described luminance sensor receives light that described LED sends and sends an optical wavelength currency and a brightness currency to described single-chip microcomputer;
According to described optical wavelength currency, described single-chip microcomputer judges whether described present intensity value equals the brightness reference value in the LED luminance value range of corresponding described optical wavelength currency, judging the resistance of described digital regulation resistance to be shown on described display screen after described present intensity value equals described brightness reference value.
7. the resistance method of testing of LED current-limiting resistance as claimed in claim 6, it is characterized in that: described single-chip microcomputer is judging to heighten after present intensity value is greater than described brightness reference value the resistance of described digital regulation resistance, then another present intensity value again received from described luminance sensor judges.
8. the resistance method of testing of LED current-limiting resistance as claimed in claim 6, it is characterized in that: described single-chip microcomputer is judging to turn down after present intensity value is less than described brightness reference value the resistance of described digital regulation resistance, then another present intensity value again received from described luminance sensor judges.
9. the resistance method of testing of LED current-limiting resistance as claimed in claim 6, is characterized in that: the LED luminance value range of described corresponding Different lightwave length inputs to described single-chip microcomputer by an input media.
10. the resistance method of testing of LED current-limiting resistance as claimed in claim 6, is characterized in that: described brightness reference value is the mean value of the maxima and minima in described LED luminance value range.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310398667.7A CN104422868A (en) | 2013-09-04 | 2013-09-04 | Resistance measuring system and method of LED (Light Emitting Diode) current limiting resistor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310398667.7A CN104422868A (en) | 2013-09-04 | 2013-09-04 | Resistance measuring system and method of LED (Light Emitting Diode) current limiting resistor |
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| CN104422868A true CN104422868A (en) | 2015-03-18 |
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| CN201310398667.7A Pending CN104422868A (en) | 2013-09-04 | 2013-09-04 | Resistance measuring system and method of LED (Light Emitting Diode) current limiting resistor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104955236A (en) * | 2015-06-30 | 2015-09-30 | 艾佛森（深圳）科技有限公司 | Method and device for controlling LED lamps |
| CN105118426A (en) * | 2015-07-31 | 2015-12-02 | 苏州玄禾物联网科技有限公司 | LED display screen white balance drive circuit |
| CN106843024A (en) * | 2015-12-07 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | A kind of wireless rheostat |
| CN112234693A (en) * | 2020-08-28 | 2021-01-15 | 珠海格力电器股份有限公司 | Bus charging control device, driver and bus charging control method thereof |
| CN113242627A (en) * | 2021-05-08 | 2021-08-10 | 山东英信计算机技术有限公司 | Jig plate for assisting LED circuit design and use method |
-
2013
- 2013-09-04 CN CN201310398667.7A patent/CN104422868A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104955236A (en) * | 2015-06-30 | 2015-09-30 | 艾佛森（深圳）科技有限公司 | Method and device for controlling LED lamps |
| CN105118426A (en) * | 2015-07-31 | 2015-12-02 | 苏州玄禾物联网科技有限公司 | LED display screen white balance drive circuit |
| CN106843024A (en) * | 2015-12-07 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | A kind of wireless rheostat |
| CN112234693A (en) * | 2020-08-28 | 2021-01-15 | 珠海格力电器股份有限公司 | Bus charging control device, driver and bus charging control method thereof |
| CN113242627A (en) * | 2021-05-08 | 2021-08-10 | 山东英信计算机技术有限公司 | Jig plate for assisting LED circuit design and use method |
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Application publication date: 20150318 |
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