CN107300665A - A kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess - Google Patents
A kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess Download PDFInfo
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- CN107300665A CN107300665A CN201710446553.3A CN201710446553A CN107300665A CN 107300665 A CN107300665 A CN 107300665A CN 201710446553 A CN201710446553 A CN 201710446553A CN 107300665 A CN107300665 A CN 107300665A
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- light source
- paths
- reference value
- led chip
- current voltage
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/2856—Internal circuit aspects, e.g. built-in test features; Test chips; Measuring material aspects, e.g. electro migration [EM]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/2872—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation
- G01R31/2879—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation related to electrical aspects, e.g. to voltage or current supply or stimuli or to electrical loads
Abstract
The invention discloses a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess, comprise the following steps：1., each paths of LEDs chip in light source and light source is numbered；2. the energy voltage reference value of each light source, is calibrated automatically；3. the corresponding energy voltage reference value of each light source, is read；4., during each light source works, the magnitude of voltage of each paths of LEDs chip of each light source is gathered by AD circuits；5., each paths of LEDs chip in each light source is opened a way successively according to number order and short circuit judges, is shown when being judged as open circuit or short circuit and exports corresponding warning message.The present invention carries out open circuit and short circuit judgement to each paths of LEDs chip in each light source successively according to number order, it can be accurately judged to caused by open circuit which LED chip is pressure drop abnormal conditions be due to or short-circuit reason, consequently facilitating safeguarding in time, the quick chip operation abnormal problem solved during light source works.
Description
Technical field
The present invention relates to a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess.
Background technology
UV-LED appearance, is that UV solidifications industry brings revolutionary change.It has constant intensity of illumination, outstanding
Temperature control, the characteristic of portable environmental-protection, more have relatively low purchase cost and almost nil maintenance cost, to UV solidify
The quality-improving of technique serves impetus with energy-saving.
Large-scale UV-LED curing has multiple LED/light sources, and each LED/light source has LED multi-path chip again.LED core
Piece is controlled by the way of multiple constant current, so that output current can reach preferable matching status.LED chip is worked
Cheng Zhong, usually occurs the abnormal situation of pressure drop, but the abnormal situation of pressure drop is supervised there is presently no corresponding method
Survey and judge.
The content of the invention
It is an object of the invention to provide a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess.
Realizing the technical scheme of the object of the invention is：A kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess, including with
Lower step：
1., each paths of LEDs chip in light source and light source is numbered；
2. the energy voltage reference value of each light source, is calibrated automatically；
3. the corresponding energy voltage reference value of each light source, is read；
4., during each light source works, the magnitude of voltage of each paths of LEDs chip of each light source is gathered by AD circuits；
5., according to number order each paths of LEDs chip in each light source is opened a way successively and short circuit judges, when being judged as
Show when open circuit or short circuit and export corresponding warning message.
The coding rule of the step 1. is：Each light source is numbered successively since 0, to each light since 0
Yuan Zhongmei roads light source is numbered.
The automatic calibrating method of the step 2. comprises the following steps：
Ith, it is automatic to set N roads light source output energy to be 30%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
IIth, it is automatic to set N roads light source output energy to be 40%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
IIIth, it is automatic to set N roads light source output energy to be 50%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
IVth, it is automatic to set N roads light source output energy to be 60%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
Vth, it is automatic to set N roads light source output energy to be 70%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
VIth, it is automatic to set N roads light source output energy to be 80%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
VIIth, it is automatic to set N roads light source output energy to be 90%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
VIIIth, it is automatic to set N roads light source output energy to be 100%, and bright light source is put, current voltage value is then gathered, and
Preserve current voltage value and be used as a reference value.
The step 5. in open circuit determination methods be：AD circuits gather a light source wherein voltage of LED chip all the way
It is worth and counts, if magnitude of voltage continuous several times ＜ 2.5V, judges that the paths of LEDs chip is opened a way, show and export alarm；If magnitude of voltage
Non- continuous several times ＜ 2.5V, then carry out short-circuit judgement.
Judge the paths of LEDs chip open circuit during the continuous 11 ＜ 2.5V of the magnitude of voltage of the LED chip all the way, show and export
Alarm；If the not continuous 11 ＜ 2.5V of magnitude of voltage, short-circuit judgement is carried out.
The step 5. in short circuit determination method be：By the current voltage value of the LED chip all the way and corresponding base
Quasi- value is compared, if continuous several times difference >=1.5V, is judged paths of LEDs chip short circuit, is shown and export alarm；If difference
Non- continuous several times >=1.5V, the then open circuit and short circuit for carrying out next paths of LEDs chip judges.
If continuous 11 times >=1.5V of the current voltage value of the LED chip all the way and the difference of corresponding a reference value, sentences
Breaking, the paths of LEDs chip is short-circuit, shows and exports alarm；If the not continuous 11 times >=1.5V of difference, carries out next paths of LEDs chip
Open circuit and short circuit judgement.
Above-mentioned technical proposal is employed, the present invention has following beneficial effect：The present invention is right successively according to number order
Each paths of LEDs chip in each light source carries out open circuit and short circuit judgement, and it is due to which that can be accurately judged to pressure drop abnormal conditions
Caused by the open circuit of paths of LEDs chip or short-circuit reason, consequently facilitating safeguarding in time, the quick core solved during light source works
Piece operation irregularity problem.
Brief description of the drawings
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail, wherein
Fig. 1 is flow chart of the invention.
Embodiment
(embodiment 1)
See Fig. 1, the LED chip pressure drop method for monitoring abnormality of the multiple light courcess of the present embodiment comprises the following steps：
1., each paths of LEDs chip in light source and light source is numbered, coding rule is：Successively to each since 0
Light source is numbered, and each light source Zhong Mei roads light source is numbered since 0.
2. the energy voltage reference value of each light source, is calibrated automatically；Automatic calibrating method comprises the following steps：
Ith, it is automatic to set N roads light source output energy to be 30%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
IIth, it is automatic to set N roads light source output energy to be 40%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
IIIth, it is automatic to set N roads light source output energy to be 50%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
IVth, it is automatic to set N roads light source output energy to be 60%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
Vth, it is automatic to set N roads light source output energy to be 70%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
VIth, it is automatic to set N roads light source output energy to be 80%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
VIIth, it is automatic to set N roads light source output energy to be 90%, and bright light source is put, current voltage value is then gathered, and protect
Current voltage value is deposited as a reference value；
VIIIth, it is automatic to set N roads light source output energy to be 100%, and bright light source is put, current voltage value is then gathered, and
Preserve current voltage value and be used as a reference value.
3. the corresponding energy voltage reference value of each light source, is read.
4., during each light source works, the magnitude of voltage of each paths of LEDs chip of each light source is gathered by AD circuits.
5., according to number order each paths of LEDs chip in each light source is opened a way successively and short circuit judges, when being judged as
Show when open circuit or short circuit and export corresponding warning message；Open circuit determination methods be：AD circuits gather a light source wherein
The magnitude of voltage of LED chip and counting all the way, if the continuous 11 ＜ 2.5V of magnitude of voltage, judges that the paths of LEDs chip is opened a way, display is simultaneously
Output alarm；If the not continuous 11 ＜ 2.5V of magnitude of voltage, short-circuit judgement is carried out；Short circuit determination method is：By a paths of LEDs
The current voltage value of chip is compared with corresponding a reference value, if continuous 11 difference >=1.5V, judge the paths of LEDs chip
Short circuit, show and export alarm；If the not continuous 11 times >=1.5V of difference, the open circuit and short circuit for carrying out next paths of LEDs chip is sentenced
It is disconnected.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (7)
1. a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess, it is characterised in that：Comprise the following steps：
1., each paths of LEDs chip in light source and light source is numbered；
2. the energy voltage reference value of each light source, is calibrated automatically；
3. the corresponding energy voltage reference value of each light source, is read；
4., during each light source works, the magnitude of voltage of each paths of LEDs chip of each light source is gathered by AD circuits；
5., according to number order each paths of LEDs chip in each light source is opened a way successively and short circuit judges, when being judged as open circuit
Or show during short circuit and export corresponding warning message.
2. a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess according to claim 1, it is characterised in that：It is described
The coding rule of step 1. is：Each light source is numbered successively since 0, to each light source Zhong Mei roads light since 0
Source is numbered.
3. a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess according to claim 1, it is characterised in that：It is described
The automatic calibrating method of step 2. comprises the following steps：
Ith, it is automatic to set N roads light source output energy to be 30%, and bright light source is put, current voltage value is then gathered, and preservation is worked as
Preceding magnitude of voltage is used as a reference value；
IIth, it is automatic to set N roads light source output energy to be 40%, and bright light source is put, current voltage value is then gathered, and preservation is worked as
Preceding magnitude of voltage is used as a reference value；
IIIth, it is automatic to set N roads light source output energy to be 50%, and bright light source is put, current voltage value is then gathered, and preservation is worked as
Preceding magnitude of voltage is used as a reference value；
IVth, it is automatic to set N roads light source output energy to be 60%, and bright light source is put, current voltage value is then gathered, and preservation is worked as
Preceding magnitude of voltage is used as a reference value；
Vth, it is automatic to set N roads light source output energy to be 70%, and bright light source is put, current voltage value is then gathered, and preservation is worked as
Preceding magnitude of voltage is used as a reference value；
VIth, it is automatic to set N roads light source output energy to be 80%, and bright light source is put, current voltage value is then gathered, and preservation is worked as
Preceding magnitude of voltage is used as a reference value；
VIIth, it is automatic to set N roads light source output energy to be 90%, and bright light source is put, current voltage value is then gathered, and preservation is worked as
Preceding magnitude of voltage is used as a reference value；
VIIIth, it is automatic to set N roads light source output energy to be 100%, and bright light source is put, current voltage value is then gathered, and preserve
Current voltage value is used as a reference value.
4. a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess according to claim 1, it is characterised in that：It is described
Step 5. in open circuit determination methods be：AD circuits gather the wherein magnitude of voltage of LED chip and the counting all the way of a light source, if electric
Pressure value continuous several times ＜ 2.5V, then judge that the paths of LEDs chip is opened a way, show and export alarm；If the non-continuous several times ＜ of magnitude of voltage
2.5V, then carry out short-circuit judgement.
5. a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess according to claim 4, it is characterised in that：It is described
Paths of LEDs chip open circuit is judged during the continuous 11 ＜ 2.5V of the magnitude of voltage of LED chip all the way, shows and exports alarm；If voltage
The not continuous 11 ＜ 2.5V of value, then carry out short-circuit judgement.
6. a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess according to claim 4, it is characterised in that：It is described
Step 5. in short circuit determination method be：The current voltage value of the LED chip all the way is compared with corresponding a reference value,
If continuous several times difference >=1.5V, judge paths of LEDs chip short circuit, show and export alarm；If the non-continuous several times of difference >=
1.5V, the then open circuit and short circuit for carrying out next paths of LEDs chip judges.
7. a kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess according to claim 6, it is characterised in that：It is described
If continuous 11 times >=1.5V of the current voltage value of LED chip and the difference of corresponding a reference value, judges the paths of LEDs chip all the way
Short circuit, show and export alarm；If the not continuous 11 times >=1.5V of difference, the open circuit and short circuit for carrying out next paths of LEDs chip is sentenced
It is disconnected.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710446553.3A CN107300665A (en) | 2017-06-13 | 2017-06-13 | A kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess |
| PCT/CN2018/000117 WO2018227945A1 (en) | 2017-06-13 | 2018-03-29 | Ultraviolet curing device and control method therefor |
| US16/497,526 US11311905B2 (en) | 2017-06-13 | 2018-03-29 | Ultraviolet curing device and control method thereof |
| EP18818745.4A EP3640525B1 (en) | 2017-06-13 | 2018-03-29 | Ultraviolet curing device and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710446553.3A CN107300665A (en) | 2017-06-13 | 2017-06-13 | A kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107300665A true CN107300665A (en) | 2017-10-27 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710446553.3A Pending CN107300665A (en) | 2017-06-13 | 2017-06-13 | A kind of LED chip pressure drop method for monitoring abnormality of multiple light courcess |
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| CN (1) | CN107300665A (en) |
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| WO2018227945A1 (en) * | 2017-06-13 | 2018-12-20 | 江苏固立得精密光电有限公司 | Ultraviolet curing device and control method therefor |
| CN112908232A (en) * | 2021-03-26 | 2021-06-04 | 四川长虹电器股份有限公司 | LED multi-partition backlight fault detection system and fault judgment method |
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| WO2018227945A1 (en) * | 2017-06-13 | 2018-12-20 | 江苏固立得精密光电有限公司 | Ultraviolet curing device and control method therefor |
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| CN112908232A (en) * | 2021-03-26 | 2021-06-04 | 四川长虹电器股份有限公司 | LED multi-partition backlight fault detection system and fault judgment method |
| CN112908232B (en) * | 2021-03-26 | 2022-10-18 | 四川长虹电器股份有限公司 | LED multi-partition backlight fault detection system and fault judgment method |
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Application publication date: 20171027 |