CN102928759A - LED (Light-Emitting Diode) projector light source detection method and LED projector - Google Patents
LED (Light-Emitting Diode) projector light source detection method and LED projector Download PDFInfo
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- CN102928759A CN102928759A CN2012104109540A CN201210410954A CN102928759A CN 102928759 A CN102928759 A CN 102928759A CN 2012104109540 A CN2012104109540 A CN 2012104109540A CN 201210410954 A CN201210410954 A CN 201210410954A CN 102928759 A CN102928759 A CN 102928759A
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Abstract
The embodiment of the invention discloses an LED (Light-Emitting Diode) projector light source detection method and an LED projector, which are used for automatically detecting a light source of the LED projector. The method disclosed by the embodiment of the invention comprises the steps of: obtaining a brightness warning threshold value of the light source, wherein the light source comprises a red LED, a green LED and a blue LED; obtaining the brightness value when one LED of the light source is brightened; and judging whether one LED works normally or not according to the brightness value and the brightness warning threshold value. According to the scheme of the embodiment of the invention, the light source of the LED projector can be automatically detected, the detection precision is high, the effect is ideal and warning can be automatically sent.
Description
Technical field
The present invention relates to the porjector technology field, relate in particular to a kind of LED projector light source detection method and LED projector.
Background technology
The light source of LED (Light Emitting Diode, light emitting diode) projector is primitive colours LED, and primitive colours LED comprises: red LED, green LED and blue led.Red, green, blueness is the coloured light three primary colors, when the primitive colours LED in the projector is lighted according to specific time sequence, can form various other colors.
As long as one of them goes wrong, just may affect the color space of whole LED projector, so that the LED projector can't work in the primitive colours LED.At present, the user is by visual inspection primitive colours LED display effect, and judges the state of primitive colours LED according to user's visual experience.
But the range estimation detection method of above-mentioned prior art is inaccurate, and the resolving power of naked eyes is limited, limited to accuracy of detection, the human vision reaction time can't be caught up with the variation of primitive colours LED, can not accomplish the independent detection to red LED, green LED and blue led, causes detecting effect not good enough.
Summary of the invention
In order to address the above problem, the embodiment of the invention provides a kind of LED projector light source detection method and LED projector, is used for automatically detecting the light source of LED projector.By implementing technical solution of the present invention, can the light source of LED projector be detected automatically, accuracy of detection is high, and is satisfactory for result, can also automatically send alarm.
A kind of LED projector light source detection method comprises:
Obtain the brightness alarm threshold of light source, described light source comprises red light emitting diodes LED, green LED and blue led;
Brightness value when obtaining one of them LED of described light source and lighting;
Judge according to described brightness value and described brightness alarm threshold whether described one of them LED works.
Preferably, described brightness value when obtaining one of them LED of described light source and lighting comprises: drive described one of them LED and light, and send the first trigger pip, described the first trigger pip is used to indicate and sends the second trigger pip, and the brightness value that described the second trigger pip is used to indicate described one of them LED is digital signal by analog signal conversion; Obtain the brightness value of described one of them LED.
Preferably, describedly judge according to described brightness value and described brightness alarm threshold whether described one of them LED works and comprise: judge that whether described brightness value is less than described brightness alarm threshold; If, then determine described one of them LED operation irregularity, if not, determine that then described one of them LED is working properly.
Preferably, describedly judge according to described brightness value and described brightness alarm threshold described one of them LED further comprises after whether working: when determining described one of them LED operation irregularity, point out described one of them LED operation irregularity to the user.
Preferably, described brightness alarm threshold comprises red LED brightness alarm threshold, green LED brightness alarm threshold and blue led brightness alarm threshold.
A kind of LED projector comprises:
Light source, described light source is the three primary colors LED, comprising: red LED, green LED and blue led;
Processing unit is for the brightness alarm threshold of obtaining light source;
Acquiring unit, the brightness value when being used for obtaining one of them LED of described light source and lighting;
Judging unit is used for judging according to described brightness value and described brightness alarm threshold whether described one of them LED works.
Preferably, described light source further comprises: the LED driver module, and described judging unit further comprises: processing module and modular converter; Described LED driver module, being used for driving described one of them LED lights, and send the first trigger pip to described processing module, described the first trigger pip is used to indicate described processing module and sends the second trigger pip to described modular converter, and it is digital signal with the brightness value of described one of them LED by analog signal conversion that described the second trigger pip is used to indicate described modular converter.
Preferably, also for whether judging described brightness value less than described brightness alarm threshold, described brightness alarm threshold comprises red LED brightness alarm threshold, green LED brightness alarm threshold and blue led brightness alarm threshold to described modular converter; If it is yes that described processing module also is used for the judged result of described modular converter, then determine described one of them LED operation irregularity, if the determination result is NO for described modular converter, determine that then described one of them LED is working properly.
Preferably, described LED projector further comprises: Alarm Unit is used for pointing out described one of them LED operation irregularity to the user when described processing module is determined described one of them LED operation irregularity.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
Brightness value when the brightness alarm threshold by obtaining light source and one of them LED of light source light, then whether this one of them LED of automatic decision works, realization is with the technique effect that the light source of LED projector is detected automatically, automatically finish this testing process by control circuit, accuracy of detection is high, satisfactory for result, can also increase the auto-alarming function.
Description of drawings
Fig. 1 is the LED projector light source detection method process flow diagram of first embodiment of the invention;
Fig. 2 is light source of the present invention and detects the sequential schematic diagram;
Fig. 3 is the LED projector light source detection method process flow diagram of second embodiment of the invention;
Fig. 4 is the brightness alarm threshold method flow diagram that obtains of the present invention;
Fig. 5 is the LED projector architecture figure of third embodiment of the invention;
Fig. 6 is the LED projector architecture figure of third embodiment of the invention.
Embodiment
Below in conjunction with the Figure of description among the present invention, the technical scheme in the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the invention provides a kind of LED projector light source detection method, is used for automatically detecting the light source state of LED projector, by implementing technical solution of the present invention, can the light source of LED projector be detected automatically, accuracy of detection is high, and is satisfactory for result, can also automatically send alarm.The embodiment of the invention also provides the LED projector relevant with the method, and the below will be described in detail respectively.
First embodiment of the invention will be elaborated to a kind of LED projector light source detection method, and the described LED projector light source of the present embodiment detection method idiographic flow sees also Fig. 1, comprises step:
101, obtain the brightness alarm threshold of light source.
The light source of LED projector is primitive colours LED, and primitive colours LED comprises: red LED, green LED and blue led.Red, green, blueness is the coloured light three primary colors, when the primitive colours LED in the projector is lighted according to specific time sequence, can form various other colors.As long as one of them goes wrong, just may affect the color space of whole LED projector, so that the LED projector can't work in the primitive colours LED.
In this step, obtain the brightness alarm threshold of light source.
Wherein, the brightness alarm threshold of light source can comprise each self-corresponding brightness alarm threshold of red LED, green LED and blue led, therefore, this step specifically comprises: obtain red LED brightness alarm threshold corresponding to red LED, obtain green LED brightness alarm threshold corresponding to green LED, obtain blue led brightness alarm threshold corresponding to blue led.
In addition, the brightness alarm threshold can preset, and perhaps calculates by the brightness of actual primitive colours LED, does not do concrete restriction here.
Brightness value when 102, obtaining one of them LED of light source and light.
The principle of work of LED projector is: the primitive colours LED timesharing of LED projector is lighted, and can form various colors, sees also Fig. 2, and LED projector Show Color relates to red, green, blue, Huang, green grass or young crops, purple 6 kinds of colors.For example, the 4th sequential, red LED is lighted, green LED is lighted, when blue led extinguishes, and the LED projector can show yellow.In the actual use procedure of LED projector primitive colours LED often light simultaneously in twos or three light simultaneously, this has brought difficulty for the brightness that detects separately red LED, green LED and blue led.
But, if when detecting sequential and only appearing at one of them LED of primitive colours LED and light separately, then can one of them LED of independent detection light source.For example, the 8th sequential, only have green LED to light, detection trigger sequential simultaneously just can detect separately the state of green LED.
Brightness value when in this step, obtaining one of them LED of light source and light.
Wherein, only occur in when only having a LED to light during the brightness of obtaining light source, mix when lighting the not state of detection light source at primitive colours LED.
In the testing process of the present embodiment, all there are the probability of lighting separately in red LED, green LED and blue led, therefore, described one of them LED of this step can for red LED, green LED or blue led any one.The testing process of the present embodiment can only one of them detects to red LED, green LED or blue led, also can detect any two LED or whole LED.
103, judge according to brightness value and brightness alarm threshold whether this one of them LED works.
According to the brightness alarm threshold of obtaining in the brightness value that obtains in the step 102 and the step 101, just can judge whether described one of them LED works.The method of judging can be directly to carry out size judgement, or it is pre-conditioned to carry out judging whether operation result meets after the COMPREHENSIVE CALCULATING, does not do concrete restriction here.For example, minimum luminance value when the brightness alarm threshold is normal the demonstration is if brightness value, then shows the minimum luminance value the when brightness of this LED can't reach normal the demonstration less than the brightness alarm threshold, therefore can determine this LED operation irregularity, otherwise determine that this LED is working properly.
In the present embodiment, brightness value when the brightness alarm threshold by obtaining light source and one of them LED of light source light, then whether this one of them LED of automatic decision works, realization is with the technique effect that the light source of LED projector is detected automatically, automatically finish this testing process by control circuit, accuracy of detection is high, and is satisfactory for result, can also increase the auto-alarming function.
Second embodiment of the invention will remark additionally to the described LED projector light source of the first embodiment detection method, and the described LED projector light source of the present embodiment detection method idiographic flow sees also Fig. 3, comprises step:
301, obtain red LED brightness alarm threshold, green LED brightness alarm threshold and the blue led brightness alarm threshold of light source.
The acquisition process of this step specifically sees also Fig. 4, comprises step:
3011, the drive current of red LED is set to minimum value, and the drive current of green LED and blue led is set to maximal value.
3012, obtain the brightness value of some number of times red LED and calculate the red LED average brightness.
3013, the red LED average brightness is added the preset value gained with value as red LED brightness alarm threshold.
3014, the drive current of green LED is set to minimum value, and the drive current of red LED and blue led is set to maximal value.
3015, obtain the brightness value of some number of times green LED and calculate the green LED average brightness.
3016, the green LED average brightness is added the preset value gained with value as green LED brightness alarm threshold.
3017, the drive current of blue led is set to minimum value, and the drive current of green LED and red LED is set to maximal value.
3018, obtain the brightness value of some number of times blue leds and calculate the blue led average brightness.
3019, the blue led average brightness is added the preset value gained with value as blue led brightness alarm threshold.
Wherein, step 3011～3013 are for obtaining the flow process of red LED brightness alarm threshold, and step 3014～3016 are for obtaining the flow process of green LED brightness alarm threshold, and step 3017～3019 are for obtaining the flow process of blue led brightness alarm threshold.Therefore, life period sequencing not between step 3011～3013, step 3014～3016, step 3017～3019.And step 3013,3016 identical with preset value in 3019.
LED brilliance control principle is: by the drive current of control LED, thus the brightness of control LED.In digitization system, the driving current value of primitive colours LED all can be regulated between 0～255, and drive current is that brightness in 0 o'clock is minimum, and drive current is that brightness in 255 o'clock is maximum.
Owing to there being each and every one difference between the light source of each LED projector, each LED is under identical drive current drives, and may there be difference in the brightness value of output, and therefore, different LED projector can not use unified brightness alarm threshold.
302, drive one of them LED and light, and send the first trigger pip.
In this step, one of them LED in the driving light source primitive colours LED lights, and sends the first trigger pip.
Wherein, the first trigger pip is used to indicate and sends the second trigger pip, and the brightness value that the second trigger pip is used to indicate this one of them LED is digital signal by analog signal conversion.The first trigger pip is carried the LED type information of this one of them LED, indicating this one of them LED is red LED, green LED or blue led, in subsequent step 304, the type of selected brightness alarm threshold is that the LED type information that carries according to the first trigger pip is determined.This LED type information also can be delivered to the second trigger pip by the first trigger pip.
303, obtain the brightness value of one of them LED.
In this step, obtain the brightness value of one of them LED, this brightness value is simulating signal, afterwards, indication according to the second trigger pip, be digital signal with the brightness value of this one of them LED by analog signal conversion so that and the brightness alarm threshold of the digital signal form in the step 301 compare.
304, judge that whether this brightness value is less than the brightness alarm threshold.
The brightness alarm threshold of obtaining in the step 301 is the minimum luminance value of primitive colours LED when normally showing, if the brightness value that obtains in the step 303 is less than the brightness alarm threshold, minimum luminance value requirement when the brightness that then shows this LED can't reach normal the demonstration, therefore this LED operation irregularity is described, otherwise this LED is working properly.
If this brightness value less than the brightness alarm threshold, then triggers execution in step 305, if this brightness value is not less than the brightness alarm threshold, then trigger execution in step 306.
305, determine this one of them LED operation irregularity, and trigger simultaneously execution in step 307.
306, determine that this one of them LED is working properly.
307, point out this one of them LED operation irregularity to the user.
When determining this one of them LED operation irregularity, point out this one of them LED operation irregularity to the user, comprise the related data of this LED operation irregularity during prompting.Suggestion content comprises the LED type information of this one of them LED at least.
Wherein, the prompting mode of this step can comprise auditory tone cues, as triggering the hummer sounding, also can be visual cues, as triggering the stand by lamp flicker, does not do concrete restriction here.
In the present embodiment, brightness value when the brightness alarm threshold by obtaining light source and one of them LED of light source light, then whether this one of them LED of automatic decision works, realization is with the technique effect that the light source of LED projector is detected automatically, automatically finish this testing process by control circuit, accuracy of detection is high, and is satisfactory for result, can also increase the auto-alarming function.
Third embodiment of the invention will be elaborated to a kind of LED projector, comprise one or more steps that one or more unit are used for realizing preceding method in the described LED projector of the present embodiment.Therefore, the description of each step in the preceding method is applicable to corresponding unit in the described LED projector.The described LED projector of the present embodiment concrete structure sees also Fig. 5, comprising:
The light source 501 of LED projector is primitive colours LED, and red, green, blueness is the coloured light three primary colors, when the primitive colours LED in the projector is lighted according to specific time sequence, can form various other colors.As long as one of them goes wrong, just may affect the color space of whole LED projector, so that the LED projector can't work in the primitive colours LED.
In this LED projector, processing unit 502 obtains the brightness alarm threshold of light source 501.
Wherein, the brightness alarm threshold of light source can comprise red LED 5011, green LED 5012 and blue led 5013 each self-corresponding brightness alarm threshold, therefore, the processing unit 502 concrete red LED brightness alarm threshold that are used for obtaining red LED 5011 correspondences, obtain the green LED brightness alarm threshold of green LED 5012 correspondences, obtain the blue led brightness alarm threshold of blue led 5013 correspondences.
In addition, the brightness alarm threshold can preset, and perhaps calculates by the brightness of actual primitive colours LED, does not do concrete restriction here.
Acquiring unit 503, the brightness value when being used for obtaining light source 501 one of them LED and lighting.
The principle of work of LED projector is: the primitive colours LED timesharing of LED projector is lighted, and can form various colors, specifically please see also Fig. 2 and the associated description in the first embodiment thereof, repeats no more here.
In the LED projector, the brightness value that acquiring unit 503 obtains light source 501 one of them LED when lighting.
Wherein, only occur in when only having a LED to light during the brightness of obtaining light source 501, mix when lighting the not state of detection light source at primitive colours LED.
In the testing process of the present embodiment, all there are the probability of lighting separately in red LED 5011, green LED 5012 and blue led 5013, therefore, this one of them LED can for red LED 5011, green LED 5012 or blue led 5013 any one.The testing process of the present embodiment can be only one of them detects to red LED 5011, green LED 5012 or blue led 5013, also can to any two LED or all LED detect.
Judging unit 504 is used for judging according to brightness value and brightness alarm threshold whether this one of them LED works.
The brightness alarm threshold that the brightness value that obtains according to acquiring unit 503 and processing unit 502 obtain, judging unit 504 can judge whether described one of them LED works.The method of judging can be directly to carry out size judgement, or it is pre-conditioned to carry out judging whether operation result meets after the COMPREHENSIVE CALCULATING, does not do concrete restriction here.For example, minimum luminance value when the brightness alarm threshold is normal the demonstration is if brightness value, then shows the minimum luminance value the when brightness of this LED can't reach normal the demonstration less than the brightness alarm threshold, therefore can determine this LED operation irregularity, otherwise determine that this LED is working properly.
In the present embodiment, brightness value when obtaining the brightness alarm threshold of light source 501 and light source 501 one of them LED and light by processing unit 502 and acquiring unit 503, then judging unit 504 judges whether this one of them LED works, realization is with the technique effect that the light source 501 of LED projector is detected automatically, automatically finish this testing process by control circuit, accuracy of detection is high, and is satisfactory for result, can also increase the auto-alarming function.
Fourth embodiment of the invention will remark additionally to the described LED projector of the 3rd embodiment.Comprise one or more steps that one or more unit are used for realizing preceding method in the described LED projector of the present embodiment.Therefore, the description of each step in the preceding method is applicable to corresponding unit in the described LED projector.The described LED projector of the present embodiment concrete structure comprises:
Light source, processing unit, acquiring unit, judging unit and Alarm Unit, light source further comprises: LED driver module, red LED, green LED and blue led, judging unit further comprises: processing module and modular converter.
Wherein, processing unit is used for obtaining the brightness alarm threshold of light source, the brightness value that acquiring unit is used for obtaining one of them LED of light source when lighting, judging unit is used for judging according to this brightness value and brightness alarm threshold whether this one of them LED works, the LED driver module, being used for driving one of them LED lights, and send the first trigger pip to processing module, the first trigger pip is used to indicate processing module and sends the second trigger pip to modular converter, it is digital signal with the brightness value of this one of them LED by analog signal conversion that the second trigger pip is used to indicate modular converter, modular converter also is used for judging that whether brightness value is less than the brightness alarm threshold, the brightness alarm threshold comprises red LED brightness alarm threshold, green LED brightness alarm threshold and blue led brightness alarm threshold, if it is yes that processing module also is used for the judged result of modular converter, then determine this one of them LED operation irregularity, if the determination result is NO for modular converter, determine that then this one of them LED is working properly, Alarm Unit, be used for when processing module is determined this one of them LED operation irregularity, pointing out this one of them LED operation irregularity to the user.
Preferably, processing unit can be the ARM microprocessor, and acquiring unit can be light sensor, and judging unit can be modulus a/d transducer, and Alarm Unit can be master control PC PC.
See also Fig. 6, a kind of LED projector comprises:
Wherein, LED driver module 601, FPGA602, A/D converter 604 and ARM microprocessor 605 carries are in I
2On the C bus, LED driver module 601 also communicates to connect with red LED 6001, green LED 6002, blue led 6003 respectively, light sensor 603 and A/D converter 604 communication connections, ARM microprocessor 605 and master control PC606 communication connection.
A/D converter 604 also is used for judging that whether this brightness value is less than the brightness alarm threshold.
FPGA602 is yes if also be used for the judged result of A/D converter 604, then determines this one of them LED operation irregularity, if the determination result is NO for A/D converter 604, determines that then this one of them LED is working properly.
Master control PC606 is used for pointing out this one of them LED operation irregularity to the user when FPGA602 determines this one of them LED operation irregularity.
Acquisition process specifically sees also Fig. 4 and relevant record in a second embodiment thereof, repeats no more here.
LED brilliance control principle is: by the drive current of LED driver module 601 control LED, thus the brightness of control LED.In digitization system, the driving current value of primitive colours LED all can be regulated between 0～255, and drive current is that brightness in 0 o'clock is minimum, and drive current is that brightness in 255 o'clock is maximum.
Owing to there being each and every one difference between the light source of each LED projector, each LED is under identical drive current drives, and may there be difference in the brightness value of output, and therefore, different LED projector can not use unified brightness alarm threshold.
The first trigger pip is used to indicate FPGA602 and sends the second trigger pip to A/D converter 604, and it is digital signal with the brightness value of this one of them LED by analog signal conversion that the second trigger pip is used to indicate A/D converter 604.
Wherein, the first trigger pip is carried the LED type information of this one of them LED, and indicating this one of them LED is red LED 6001, green LED 6002 or blue led 6003, and this LED type information also can be delivered to the second trigger pip by the first trigger pip.
Wherein, this brightness value is simulating signal, and afterwards, according to the indication of the second trigger pip, A/D converter 604 is digital signal with the brightness value of this one of them LED by analog signal conversion so that and the brightness alarm threshold of digital signal form compare.
A/D converter 604 judges that whether this brightness value is less than the brightness alarm threshold.
The brightness alarm threshold that ARM microprocessor 605 obtains is the minimum luminance value of primitive colours LED when normally showing, if the judged result of A/D converter 604 is that the brightness value that obtains is less than the brightness alarm threshold, minimum luminance value requirement when the brightness that then shows this LED can't reach normal the demonstration, therefore this LED operation irregularity is described, otherwise this LED is working properly.
If the judged result of A/D converter 604 is that brightness value is less than the brightness alarm threshold, then determine this one of them LED operation irregularity, and to FPGA602 transmission interruption Interrupt information, FPGA602 sends the Interrupt information of interrupting to ARM microprocessor 605 again, and the ARM microprocessor 605 indication master control PC606 point out this one of them LED operation irregularity to the user; If this brightness value is not less than the brightness alarm threshold, determine that then this one of them LED is working properly.
The related data that comprises this LED operation irregularity when wherein, master control PC606 points out.Suggestion content comprises the LED type information of this one of them LED at least.Prompting mode can comprise auditory tone cues, as triggering the hummer sounding, also can be visual cues, as triggering the stand by lamp flicker, does not do concrete restriction here.
In the present embodiment, brightness value when obtaining the brightness alarm threshold of light source 60 and light source 60 one of them LED and light by ARM microprocessor 605, light sensor 603, A/D converter 604, then A/D converter 604 judges whether this one of them LED works, realization is with the technique effect that the light source 60 of LED projector is detected automatically, automatically finish this testing process by control circuit, accuracy of detection is high, and is satisfactory for result, can also increase the auto-alarming function.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be ROM (read-only memory), disk or CD etc.
Above a kind of LED projector light source detection method provided by the present invention and LED projector are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a LED projector light source detection method is characterized in that, comprising:
Obtain the brightness alarm threshold of light source, described light source comprises red light emitting diodes LED, green LED and blue led;
Brightness value when obtaining one of them LED of described light source and lighting;
Judge according to described brightness value and described brightness alarm threshold whether described one of them LED works.
2. method according to claim 1 is characterized in that, described brightness value when obtaining one of them LED of described light source and lighting comprises:
Drive described one of them LED and light, and send the first trigger pip, described the first trigger pip is used to indicate and sends the second trigger pip, and the brightness value that described the second trigger pip is used to indicate described one of them LED is digital signal by analog signal conversion;
Obtain the brightness value of described one of them LED.
3. method according to claim 1 and 2 is characterized in that, describedly judges according to described brightness value and described brightness alarm threshold whether described one of them LED works and comprises:
Judge that whether described brightness value is less than described brightness alarm threshold;
If, then determine described one of them LED operation irregularity, if not, determine that then described one of them LED is working properly.
4. method according to claim 3 is characterized in that, describedly judges according to described brightness value and described brightness alarm threshold described one of them LED further comprises after whether working:
When determining described one of them LED operation irregularity, point out described one of them LED operation irregularity to the user.
5. method according to claim 1 and 2 is characterized in that,
Described brightness alarm threshold comprises red LED brightness alarm threshold, green LED brightness alarm threshold and blue led brightness alarm threshold.
6. a LED projector is characterized in that, comprising:
Light source, described light source is the three primary colors LED, comprising: red LED, green LED and blue led;
Processing unit is for the brightness alarm threshold of obtaining light source;
Acquiring unit, the brightness value when being used for obtaining one of them LED of described light source and lighting;
Judging unit is used for judging according to described brightness value and described brightness alarm threshold whether described one of them LED works.
7. LED projector according to claim 6 is characterized in that,
Described light source further comprises: the LED driver module, and described judging unit further comprises: processing module and modular converter;
Described LED driver module, being used for driving described one of them LED lights, and send the first trigger pip to described processing module, described the first trigger pip is used to indicate described processing module and sends the second trigger pip to described modular converter, and it is digital signal with the brightness value of described one of them LED by analog signal conversion that described the second trigger pip is used to indicate described modular converter.
8. LED projector according to claim 7 is characterized in that,
Also for whether judging described brightness value less than described brightness alarm threshold, described brightness alarm threshold comprises red LED brightness alarm threshold, green LED brightness alarm threshold and blue led brightness alarm threshold to described modular converter;
If it is yes that described processing module also is used for the judged result of described modular converter, then determine described one of them LED operation irregularity, if the determination result is NO for described modular converter, determine that then described one of them LED is working properly.
9. according to claim 6,7 or 8 described LED projector, it is characterized in that, described LED projector further comprises:
Alarm Unit is used for pointing out described one of them LED operation irregularity to the user when described processing module is determined described one of them LED operation irregularity.
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| CN112986787A (en) * | 2021-05-20 | 2021-06-18 | 江西省兆驰光电有限公司 | Light-emitting diode testing device |
| CN113916502A (en) * | 2021-09-29 | 2022-01-11 | 歌尔光学科技有限公司 | Intelligent glasses infrared LED testing method, system and positioning method thereof |
| US11509873B2 (en) | 2018-01-16 | 2022-11-22 | Coretronic Corporation | Light source generating device, projection apparatus and light source generation method thereof |
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