CN108593258B - Stability evaluation method for test system of light source and lamp - Google Patents
Stability evaluation method for test system of light source and lamp Download PDFInfo
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Abstract
The invention relates to a test system stability evaluation method which is simple and convenient to operate, can improve the reliability and the accuracy of a test result obtained by a test system and further improve the product qualification rate of a light source and a lamp, and has the advantages that the method is simple and convenient to operate, the stability of the test system can be directly judged and timely calibrated by workers of a detection department in a daily inspection link, the test system is ensured to operate under the condition of high measurement stability and accuracy, the time delay is reduced, the reaction is more timely, the research and development efficiency and the production efficiency are improved, the hierarchical arrangement is reasonable, the daily inspection link is timely regulated and controlled by the workers of the detection department, the stability of the test system is continuously kept, the test system can be further calibrated in a monthly calibration link, the mutual calibration with an external test system of an enterprise can avoid the integral system error caused by the long-term closed-loop internal calibration, and the quarterly GRR, And the existing system deviation is corrected, and the stability and the accuracy of the test system are further improved.
Description
Technical Field
The invention relates to an evaluation method, in particular to a test system stability evaluation method which is simple and convenient to operate, can greatly improve the reliability and accuracy of a test result obtained by a test system, and further improves the product percent of pass of a light source and a lamp.
Background
Each enterprise needs to provide an index of product parameters and performance when producing and selling products, the accuracy and stability of testing and measuring are key for measuring the product parameters and performance reliability provided by the enterprise, the stability of a testing system and a measuring system is more guarantee of the accuracy, and the methods for improving the stability of the testing system and the measuring system and guaranteeing the accuracy of the testing system and the measuring system in the enterprise at present mostly adopt new and old QC seven methods, MSA and 8D reports and other methods.
The seven methods of new and old QC are also called seven methods of new and old quality control, the seven methods of old QC are respectively a check table, a data layering method, an arrangement diagram, a histogram, a cause and effect analysis diagram, a scatter diagram and a control diagram, the seven methods of new QC are respectively a correlation diagram, an affinity diagram, a system diagram, a process decision program diagram, a matrix data analysis method and an arrow bar diagram, the seven methods of new and old QC are summarized in Japan, the seven methods of old QC are focused on statistical analysis and are improved after problems occur, the seven methods of new and old QC are focused on thinking analysis and emphasize prevention before problems occur, and the seven methods of new and old QC are centered on organizational quality management on the overall quality management idea and are combined with mathematical statistics to perform quality control.
The MSA analyzes the resolution and error of the measurement system using mathematical statistics and charts to evaluate whether the resolution and error of the measurement system are proper for the measured parameters and to determine the main components of the measurement system error, i.e. similar to the new and old QC seven methods, but it can adjust the test system for the measured products and parameters in addition to quality management and mathematical statistics.
The 8D report is a quality tool derived by ford: 8 steps of quality improvement: team, problem description, emergency containment strategy making, root cause confirmation, corrective action plan, corrective action execution, preventive action, summary; at present, the method is more applied to the financing enterprises, and more improvement measures and reports, namely 8D reports, are applied to customer complaints.
The above three methods have their advantages, especially their versatility, and can be used for quality management and quality management of all products, but there are several disadvantages, firstly there is a certain time delay, because the quality and quality analysis is based on the detection data of the detection department, and then the data is transmitted to the technical department for statistical arrangement and technical analysis, the statistical arrangement and technical analysis need professional knowledge maintenance, the staff of the detection department can not complete, the simplest daily detection also needs to coordinate between two departments, and the detection department needs to provide the detection data to the research and development or production department in time, so the detection department is used as a 'transfer' department, the technical department has a certain time delay compared with the data circulation between the research and development department and the production department, secondly, the process of the three methods is complicated, the amount of data statistics and technical analysis required in an enterprise is necessarily very large, and technical departments cannot perform data statistics and technical analysis on all products every day.
The chinese patent office, patent publication No. CN102511136B, discloses a dispersion estimator and a method for estimating dispersion on 15/4/2015, which adopts the mutual conversion of optical and electrical signals, improves the signal generator to compensate the influence of dispersion of optical media, and estimates the dispersion.
Disclosure of Invention
In order to solve the problem that the seven methods, MSA and 8D reports of old and new QC in the prior art have certain time delay, because the quality and quality analysis is based on the detection data of a detection department, and then the data is transmitted to a technical department for arrangement statistics and technical analysis, the arrangement statistics and the technical analysis need professional knowledge maintenance, the workers of the detection department can not complete the detection usually, the simplest daily detection also needs to be coordinated between two departments, and the detection department needs to provide the detection data to a research and development department or a production department in real time, so the detection department serves as a 'transfer' department, the technical department has certain time delay compared with the data circulation between the research and development department and the production department, and the processes of the three methods are all complicated, and the quantity of data statistics and technical analysis needed in an enterprise is definitely very large, the invention provides a test system stability evaluation method which is simple and convenient to operate, can greatly improve the reliability and the accuracy of a test result obtained by a test system, and further improves the product qualification rate and the lamp.
In order to achieve the purpose, the invention adopts the following technical scheme:
a stability evaluation method for a test system of a light source and a lamp is applied to the test of luminous flux, luminous efficiency, color temperature and power parameters of the light source and the lamp, and comprises the following steps:
a) daily inspection
a-1) selecting high-quality common bubbles as a tool for testing the stability of a system for daily monitoring of the system;
a-2) adjusting parameters of the test system to 220V and 50Hz before the test system is used every day, outputting the parameters to a load for preheating for 30-35 min, fixedly installing the normal bubble selected in the step a-1) to an integrating sphere lamp holder, stabilizing a data curve of the normal bubble for 5-10 min, and testing and recording the data after the curve is stable;
a-3) recording and analyzing the data obtained in the step a-2), if the data analysis result does not meet the requirement, adjusting, repeating the step a-2) again after adjusting, and if the data analysis meets the requirement, indicating that the stability of the test system meets the standard;
a-4) testing products in batches after the data analysis in the step a-3) meets the requirements and the stability of the testing system is judged to reach the standard, judging that the luminous flux exceeds the needed point light source for recalibration according to +/-5 thousandths of the data measured after ten times of accumulated calibration, judging that the color coordinate exceeds the needed point light source for recalibration according to +/-1 thousandths of the data measured after ten times of accumulated calibration;
b) monthly calibration
b-1) carrying out system comparison with an external test system once a month, designating a set of test system test comparison lamp tubes, providing data obtained by the external system for technical departments to carry out comparison, and carrying out appropriate adjustment according to comparison results;
b-2) carrying out internal system comparison once a month, selecting various aged lamps for comparison, and properly adjusting comparison results;
c) quarterly GRR analysis
c-1) selecting 5-10 same-kind lamps per quarter to carry out cycle test, analyzing the main parameters of luminous flux, color coordinates, tube pressure and power, respectively calculating standard deviations measured for 5-10 times of the main parameters to obtain an average value, calculating the tolerance of the measuring tool according to the average standard deviation, and adjusting the test system when the obtained tolerance of the measuring tool is more than 30%.
Preferably, the evaluation method further comprises one-time annual inspection comparison, wherein the inspection comparison is standard comparison of data provided by the Shanghai national electric light source detection center or the Beijing national electric light source detection center, the data are collated, the deviation between the internal test system and the authoritative machine test system is observed, and the internal test system and the authoritative machine test system are adjusted in a targeted manner.
Preferably, the normal bubble used in the step a-1) is a high-quality normal bubble with the power of 60w or 100w, and is aged for 200 hours before starting, and the fluctuation of the coordinate and the luminous flux of the normal bubble which needs to be observed and tested repeatedly for 10-15 times does not exceed the requirement of a control index.
Preferably, the step a) daily inspection process is to perform stability detection and calibration on the test system by adopting the steps a-1), a-2) and a-3) before each tester uses the test system.
Preferably, the comparative lamp in the step b-1) is aged for 1000h before use, and the lamp used in the step b-2) comprises three types of lamps T3.5w, T4.14w and T4.18wRR, and the aging time is 1000 h.
Preferably, the lamp tube used in the step c-1) is phi 12.2u.14w, and the lamp tube needs to be aged for 1000 hours before use.
Preferably, the step c-1) of calculating the tolerance of the gauge is as follows: the gauge tolerance = a × 5.15 ÷ corresponding parameter allowable deviation rating, where a is the mean standard deviation of 5 to 10 measurements of any one of power, tube pressure, color coordinates, and luminous flux, the corresponding parameter allowable deviation rating being based on national and enterprise standards for the corresponding parameter.
The invention has the beneficial effects that:
1) the operation is simple and convenient, the stability of the test system can be directly judged and timely calibrated by workers of a detection department in the daily inspection link, and the test system is ensured to operate under the conditions of high measurement stability and accuracy;
2) the time delay is reduced, the reaction is more timely, and the research and development efficiency and the production efficiency can be greatly improved;
3) the system is reasonable in hierarchical arrangement, the system can be regulated and controlled in time by staff of a detection department in a daily inspection link, the stability of the test system can be kept continuously, the test system can be further calibrated in a monthly calibration link, the system can be calibrated with an enterprise external test system, the whole system error caused by long-term closed-loop internal calibration can be avoided, the system deviation in the quarterly GRR analysis link can be further reduced and corrected, the stability and the accuracy of the test system are further improved, one-year inspection delivery comparison can be compared with an authority, and the stability of the test system can be further improved and the error can be reduced by comparing and calibrating;
4) the evaluation method provided by the invention can be used for quickly evaluating the stability of the test system and timely adjusting the test system with low stability, thereby greatly improving the accuracy of the data obtained by the test system and having practicability.
Detailed Description
A stability evaluation method for a test system of a light source and a lamp is applied to the test of luminous flux, luminous efficiency, color temperature and power parameters of the light source and the lamp, and comprises the following steps:
a) daily inspection
a-1) selecting high-quality common bubbles as a tool for testing the stability of a system for daily monitoring of the system;
a-2) adjusting parameters of the test system to 220V and 50Hz before the test system is used every day, outputting the parameters to a load for preheating for 30-35 min, fixedly installing the normal bubble selected in the step a-1) to an integrating sphere lamp holder, stabilizing a data curve of the normal bubble for 5-10 min, and testing and recording the data after the curve is stable;
a-3) recording and analyzing the data obtained in the step a-2), if the data analysis result does not meet the requirement, adjusting, repeating the step a-2) again after adjusting, and if the data analysis meets the requirement, indicating that the stability of the test system meets the standard;
a-4) testing products in batches after the data analysis in the step a-3) meets the requirements and the stability of the testing system is judged to reach the standard, judging that the luminous flux exceeds the needed point light source for recalibration according to +/-5 thousandths of the data measured after ten times of accumulated calibration, judging that the color coordinate exceeds the needed point light source for recalibration according to +/-1 thousandths of the data measured after ten times of accumulated calibration;
b) monthly calibration
b-1) carrying out system comparison with an external test system once a month, designating a set of test system test comparison lamp tubes, providing data obtained by the external system for technical departments to carry out comparison, and carrying out appropriate adjustment according to comparison results;
b-2) carrying out internal system comparison once a month, selecting various aged lamps for comparison, and properly adjusting comparison results;
c) quarterly GRR analysis
c-1) selecting 5-10 same-kind lamps per quarter to carry out cycle test, analyzing the main parameters of luminous flux, color coordinates, tube pressure and power, respectively calculating standard deviations measured for 5-10 times of the main parameters to obtain an average value, calculating the tolerance of the measuring tool according to the average standard deviation, and adjusting the test system when the obtained tolerance of the measuring tool is more than 30%.
The assessment method further comprises one-time annual inspection comparison, wherein the inspection comparison is standard comparison of data provided by the above sea national electric light source detection center or Beijing national electric light source detection center, the data are collated, the deviation of an internal test system and an authoritative machine test system is observed, and the internal test system and the authoritative machine test system are adjusted in a targeted mode.
The normal bubble used in the step a-1) is high-quality normal bubble with the power of 60w or 100w, the normal bubble is aged for 200 hours before starting, and the fluctuation of the coordinate and the luminous flux of the normal bubble which needs to be observed and tested repeatedly for 10-15 times does not exceed the requirement of a control index.
The step a) daily inspection process is preferably to perform stability detection and calibration on the test system by adopting the steps a-1), a-2) and a-3) before each tester uses the test system.
The comparison lamp tube in the step b-1) is aged for 1000 hours before being used, and the lamp tube used in the step b-2) comprises three types of lamp tubes T3.5w, T4.14w and T4.18wRR, and the aging time is 1000 hours.
In the step c-1), the lamp tube is 12.2u.14w, and the lamp tube needs to be aged for 1000 hours before use.
The calculation formula of the tolerance of the measuring tool in the step c-1) is as follows: the gauge tolerance = a × 5.15 ÷ corresponding parameter allowable deviation rating, where a is the mean standard deviation of 5 to 10 measurements of any one of power, tube pressure, color coordinates, and luminous flux, the corresponding parameter allowable deviation rating being based on national and enterprise standards for the corresponding parameter.
Taking the actual operation as an example:
example 1
a) Daily inspection
a-1) selecting high-quality 60w ordinary bubbles aged for 200 hours as a tool for testing the stability of a system for daily monitoring of the system, and comparing the high-quality 60w ordinary bubbles with a self-produced lamp to be tested with appropriate power;
a-2) adjusting parameters of a test system to 220V and 50Hz before the test system is used, outputting the parameters to a load for preheating for 30min, fixedly installing the common bulb selected in the step a-1) to an integrating sphere lamp holder, stabilizing a data curve of the common bulb for 5min, and testing and recording data after the curve is stable;
a-3) recording and analyzing the data obtained in the step a-2), adjusting if the data analysis result does not meet the requirement, repeating the step a-2) again after adjusting, and if the data analysis meets the requirement, indicating that the stability of the test system meets the standard;
a-4) testing products in batches after the data analysis in the step a-3) meets the requirements and the stability of the testing system is judged to reach the standard, judging that the luminous flux exceeds the needed point light source for recalibration according to +/-5 thousandths of the data measured after ten times of accumulated calibration, judging that the color coordinate exceeds the needed point light source for recalibration according to +/-1 thousandths of the data measured after ten times of accumulated calibration;
b) monthly calibration
b-1) carrying out system comparison with an external test system once in the beginning of the month, wherein the external test system is provided by a related cooperative enterprise, a set of test systems is appointed to test comparison lamp tubes aged for 1000h, data obtained by the external system is provided for technical departments to carry out comparison, the comparison results are communicated with the cooperative enterprise, and the technical departments of the two parties carry out proper adjustment on parameters of the test systems;
b-2) carrying out internal system comparison once a month, selecting three types of lamps of T3.5w, T4.14w and T4.18wRR aged for 1000 hours for comparison, analyzing aiming at a technical department of comparison results, and properly adjusting a test system;
c) quarterly GRR analysis
c-1) selecting 5 tubes of the same type to carry out cycle test every quarter, analyzing the main parameters of luminous flux, color coordinates, tube pressure and power, respectively calculating standard deviations of the main parameters measured for 5 times to obtain an average value, calculating the tolerance of the measuring tool according to the average standard deviation, adjusting the test system when the obtained tolerance of the measuring tool is more than 30%, wherein the calculation formula of the tolerance of the measuring tool is as follows: the gauge tolerance = a × 5.15 ÷ the respective parameter allowable deviation rating, where a is the mean standard deviation of 5 measurements of any one of the data of power, tube pressure, color coordinates, and luminous flux, the respective parameter allowable deviation rating depending on the national standard of the respective parameter.
Example 2
a) Daily inspection
a-1) selecting high-quality brand 100w ordinary bubbles aged for 200 hours as a tool for testing the stability of a system for daily monitoring, and comparing the tool with a self-produced lamp to be tested with appropriate power;
a-2) adjusting parameters of a test system to 220V and 50Hz before the test system is used, outputting the parameters to a load for preheating for 35min, fixedly installing the common bulb selected in the step a-1) to an integrating sphere lamp holder, stabilizing a data curve of the common bulb for 10min, and testing and recording data after the curve is stable;
a-3) recording and analyzing the data obtained in the step a-2), adjusting if the data analysis result does not meet the requirement, repeating the step a-2) again after adjusting, and if the data analysis meets the requirement, indicating that the stability of the test system meets the standard;
a-4) testing products in batches after the data analysis in the step a-3) meets the requirements and the stability of the testing system is judged to reach the standard, judging that the luminous flux exceeds the needed point light source for recalibration according to +/-5 thousandths of the data measured after ten times of accumulated calibration, judging that the color coordinate exceeds the needed point light source for recalibration according to +/-1 thousandths of the data measured after ten times of accumulated calibration;
b) monthly calibration
b-1) carrying out system comparison with an external test system once in the beginning of the month, wherein the external test system is provided by a related cooperative enterprise, a set of test systems is appointed to test comparison lamp tubes aged for 1000h, data obtained by the external system is provided for technical departments to carry out comparison, the comparison results are communicated with the cooperative enterprise, and the technical departments of the two parties carry out proper adjustment on parameters of the test systems;
b-2) carrying out internal system comparison once a month, selecting three types of lamps of T3.5w, T4.14w and T4.18wRR aged for 1000 hours for comparison, analyzing aiming at a technical department of comparison results, and properly adjusting a test system;
c) quarterly GRR analysis
c-1) selecting 10 lamps of the same type to carry out cycle test every quarter, analyzing the main parameters of luminous flux, color coordinates, tube pressure and power, respectively calculating the standard deviation of the 10 times of measurement of the main parameters to obtain an average value, calculating the tolerance of the measuring tool according to the average standard deviation, adjusting the test system when the obtained tolerance of the measuring tool is more than 30%, wherein the calculation formula of the tolerance of the measuring tool is as follows: the gauge tolerance = a × 5.15 ÷ corresponding parameter allowable deviation rating, where a is the mean standard deviation of 10 measurements of any one of power, tube pressure, color coordinate, and luminous flux, the corresponding parameter allowable deviation rating being based on the business standard of the corresponding parameter.
Example 3
And (4) submitting to the Shanghai national electric light source detection center for inspection, comparing the data provided by the Shanghai national electric light source detection center as a standard, sorting the data, observing the deviation between the internal test system and the authoritative machine test system, and adjusting the deviation in a targeted manner.
Example 4
And (3) sending inspection to the Beijing national electric light source detection center, comparing the data serving as a standard according to the data provided by the Beijing national electric light source detection center, sorting the data, observing the deviation between the internal test system and the authoritative machine test system, and adjusting the deviation in a targeted manner.
Comparative example
The new QC seven methods adopted in the original enterprises are combined with MSA quality management analysis for comparison.
| New QC seven methods and MSA quality management analysis combination | The method provided by the invention | |
| Test system accuracy | 84.8% | 95.0% |
| Defective percentage | 5.73% | 2.01% |
| Statistical map morphology of measured standard deviation | Are relatively discrete | Is relatively centralized |
The comparison result shows that compared with the method used in the comparative example, the stability evaluation method for the test system of the light source and the lamp provided by the invention has the advantages that the stability of the test system is obviously improved, compared with the inspection result sent to an authoritative department in the past year, the accuracy of the test system is improved by 12% in the past year, the stability of the system in the whole year is high, the fluctuation is small, the production line parameters can be timely adjusted to improve the product quality due to the real-time and rapid data butt joint with a production department, the defective rate is reduced by 65%, the qualified product parameters and the performance stability are improved, the same parameter test standard deviation is reduced by 33%, namely, all the parameters and the performance are more balanced, and the method has high.
Claims (7)
1. A stability evaluation method for a test system of a light source and a lamp is characterized in that the test system is applied to tests of luminous flux, luminous efficiency, color temperature and power parameters of the light source and the lamp, and the evaluation method comprises the following steps:
a) daily inspection
a-1) selecting high-quality common bubbles as a tool for testing the stability of a system for daily monitoring of the system;
a-2) adjusting parameters of the test system to 220V and 50Hz before the test system is used every day, outputting the parameters to a load for preheating for 30-35 min, fixedly installing the normal bubble selected in the step a-1) to an integrating sphere lamp holder, stabilizing a data curve of the normal bubble for 5-10 min, and testing and recording the data after the curve is stable;
a-3) recording and analyzing the data obtained in the step a-2), if the data analysis result does not meet the requirement, adjusting, repeating the step a-2) again after adjusting, and if the data analysis meets the requirement, indicating that the stability of the test system meets the standard;
a-4) testing products in batches after the data analysis in the step a-3) meets the requirements and the stability of the testing system is judged to reach the standard, judging that the luminous flux exceeds the needed point light source for recalibration according to +/-5 thousandths of the data measured after ten times of accumulated calibration, judging that the color coordinate exceeds the needed point light source for recalibration according to +/-1 thousandths of the data measured after ten times of accumulated calibration;
b) monthly calibration
b-1) carrying out system comparison with an external test system once a month, designating a set of test system test comparison lamp tubes, providing data obtained by the external system for technical departments to carry out comparison, and carrying out appropriate adjustment according to comparison results;
b-2) carrying out internal system comparison once a month, selecting various aged lamps for comparison, and properly adjusting comparison results;
c) quarterly GRR analysis
c-1) selecting 5-10 tubes of the same type to carry out cycle test every quarter, analyzing the luminous flux, color coordinates, tube pressure and power of main parameters, respectively calculating the standard deviation of the main parameters measured for 5-10 times to obtain an average value, finally multiplying the obtained average value by 5.15 and dividing the average value by the allowable deviation rated value of each parameter to obtain the percentage of the repeated test deviation of the test instrument, wherein the percentage of the repeated test deviation of the test instrument is the tolerance of the measuring tool, and the test system is adjusted when the tolerance of the measuring tool is more than 30 percent.
2. The method according to claim 1, further comprising a one-year censoring comparison, wherein the censoring comparison is a standard comparison with data provided by the above-mentioned sea national electric light source detection center or the beijing national electric light source detection center, the data is collated, and the deviation between the internal test system and the authority test system is observed and adjusted in a targeted manner.
3. The method as claimed in claim 1 or 2, wherein the regular bubble used in step a-1) is a high-quality regular bubble with power of 60w or 100w, and is aged for 200h before activation, and the coordinate and luminous flux thereof should not fluctuate more than the control index requirement after repeating the test 10-15 times.
4. The method for evaluating the stability of the test system of the light source and the lamp as claimed in claim 1 or 2, wherein the step a) daily inspection process preferably adopts the steps a-1), a-2) and a-3) before each tester uses the test system to perform stability detection and calibration on the test system.
5. The method for evaluating the stability of the test system of the light source and the lamp as claimed in claim 1 or 2, wherein the comparison lamp in step b-1) is aged for 1000h before use, and the lamps used in step b-2) comprise three types of lamps T3.5w, T4.14w and T4.18wRR, and the aging time is 1000 h.
6. The method for evaluating the stability of the test system of the light source and the lamp as claimed in claim 1 or 2, wherein the lamp used in step c-1) is a lamp with a diameter of 12.2u.14w and is aged for 1000h before use.
7. The method for evaluating the stability of the test system of the light source and the lamp as claimed in claim 1 or 2, wherein the step c-1) of calculating the tolerance of the gauge is as follows: the gauge tolerance = a × 5.15 ÷ the respective parameter allowed deviation rating, where a is the mean standard deviation of five measurements of any one of power, tube pressure, color coordinates, and luminous flux, the respective parameter allowed deviation rating being based on national and enterprise standards for the respective parameter.
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