CN109164773B - A multifunctional optical testing system and method based on LabVIEW - Google Patents
A multifunctional optical testing system and method based on LabVIEW Download PDFInfo
- Publication number
- CN109164773B CN109164773B CN201811149032.2A CN201811149032A CN109164773B CN 109164773 B CN109164773 B CN 109164773B CN 201811149032 A CN201811149032 A CN 201811149032A CN 109164773 B CN109164773 B CN 109164773B
- Authority
- CN
- China
- Prior art keywords
- test
- light source
- module
- control system
- measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 122
- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 43
- 238000004891 communication Methods 0.000 claims abstract description 21
- 230000000171 quenching effect Effects 0.000 claims abstract description 12
- 238000000904 thermoluminescence Methods 0.000 claims abstract description 11
- 238000001296 phosphorescence spectrum Methods 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 22
- 238000004020 luminiscence type Methods 0.000 claims description 22
- 239000013307 optical fiber Substances 0.000 claims description 18
- 230000000875 corresponding effect Effects 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 17
- 229910052724 xenon Inorganic materials 0.000 claims description 13
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 230000001960 triggered effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 3
- 238000001748 luminescence spectrum Methods 0.000 claims description 3
- 238000000295 emission spectrum Methods 0.000 claims description 2
- 238000010791 quenching Methods 0.000 abstract description 12
- 238000011056 performance test Methods 0.000 abstract description 9
- 230000005284 excitation Effects 0.000 description 18
- 238000013480 data collection Methods 0.000 description 7
- 230000004044 response Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000013112 stability test Methods 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000005516 deep trap Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000008140 language development Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/23—Pc programming
- G05B2219/23258—GUI graphical user interface, icon, function bloc editor, labview
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
A multifunctional optical test system and method based on LabVIEW relates to optical performance test. The system comprises a test hardware part and a measurement and control system platform based on LabVIEW; the test hardware part comprises a light source system for exciting a luminous sample, a temperature control system for controlling the temperature of the luminous sample and a data acquisition system for acquiring test data; the light source system, the temperature control system and the data acquisition system are in coupling connection and/or communication connection with the measurement and control system platform; the light source system comprises a light source and a light source control module, and the light source is in communication connection with the measurement and control system platform through the light source control module. The measurement and control system platform realizes five test modes of a long afterglow attenuation curve, a thermoluminescence curve, a time-resolved phosphorescence spectrum, fluorescence thermal quenching and fluorescence thermal stability.
Description
Technical Field
The invention relates to optical performance testing, in particular to a multifunctional optical testing system and method based on LabVIEW.
Background
Optical functional materials have been widely focused on due to their great application values in the fields of general illumination, safety indication, information storage, and the like. After the optical functional material is synthesized, a series of tedious optical performance tests are required, such as a long afterglow decay test of a long afterglow luminescent material, a thermoluminescence test of an optical information storage material, a constant temperature or variable temperature phosphorescence spectrum test of a phosphorescence material, a thermal quenching characteristic and a thermal stability test of a fluorescent powder material, and the like.
The long-afterglow luminescent materials have the characteristic of continuously emitting light after stopping the excitation of the light source, and are widely concerned. For the long afterglow luminescence decay curve, the important characterization method for describing the long afterglow luminescence performance is provided. The long afterglow luminescence decay curve is the time-dependent decay curve of the luminescence intensity of the luminescent material after the excitation light source is removed, and the slower the decay is, the better the long afterglow luminescence property of the material is. The expression form of the luminous intensity is mainly divided into two types: one is the absolute luminance in cd/m2(ii) a Second phaseThe light emission luminance is measured. The former is usually collected by a dark field luminance meter, and the latter is obtained by amplifying an optical signal by a photomultiplier tube and converting the amplified signal into an electrical signal. However, the dark field luminance meter has a detection limit, and when the light signal is too weak, the absolute luminescence intensity of the luminescent sample cannot be accurately detected, and it takes a long time (up to tens of seconds or minutes). The photomultiplier converts the optical signal into an electrical signal through signal amplification for many times, and has the advantages of extremely high sensitivity, extremely low noise, relatively fast response and the like. In the current industry standard, the intensity of the long-afterglow luminescent material is generally reduced to 0.32mcd/m2Is defined as the remaining glow life (cf. national measurement standard jjjg 211-2005). The detection limit of the long afterglow luminescence decay curve tester correspondingly designed is about 0.1mcd/m2. However, in the research of long-afterglow luminescent materials, the room-temperature afterglow luminescent intensity of many materials (such as deep trap long-afterglow luminescent materials applied to optical information storage) is far lower than 0.1mcd/m2And the absolute luminous intensity of the long afterglow luminous attenuation curve cannot be accurately measured by the conventional long afterglow luminous attenuation curve tester. Therefore, there is a need to develop a test system and method that can accurately determine weak absolute luminescence intensity.
The long afterglow luminescence, the thermoluminescence, the constant temperature/variable temperature phosphorescence, the thermal quenching and the thermal stability test are all completed by the cooperative work of a plurality of instruments and equipment, the operation is complex, time and labor are wasted, unnecessary errors are easily introduced in the manual instrument switching process, and the test stability and the repeatability are poor. For example: in the long afterglow test process, the data of the dark field brightness meter and the photomultiplier tube can only be collected point by point through an instrument display screen or matched computer software, and a simple long afterglow attenuation curve needs hundreds of data points, so that the manual operation is obviously unrealistic. If automatic acquisition and storage of data in the test process can be realized through an automatic control system, the test efficiency and reliability are inevitably improved greatly. LabVIEW is a graphical programming language development environment, has gained industry, academic and research laboratory acceptance, is considered a standard data acquisition and instrument control software. The personalized instrument automatic control platform can be conveniently established by means of powerful functions of the system, so that the operation flow in the optical performance test is effectively simplified, the test stability and the test repeatability are improved, and meanwhile, the investment of manpower and financial resources is greatly reduced.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned shortcomings of the prior art and providing a multifunctional optical testing system and method based on LabVIEW.
The multifunctional optical test system based on LabVIEW comprises a test hardware part and a measurement and control system platform based on LabVIEW; the test hardware part comprises a light source system for exciting a luminous sample, a temperature control system for controlling the temperature of the luminous sample and a data acquisition system for acquiring test data; the light source system, the temperature control system and the data acquisition system are in coupling connection and/or communication connection with the measurement and control system platform; the light source system comprises a light source and a light source control module, and the light source is in communication connection with the measurement and control system platform through the light source control module.
The light source includes, but is not limited to, xenon lamp light source, LED light source, laser light source, ultraviolet low pressure mercury lamp light source, and the like.
The temperature control system comprises a cold-hot table and a cold-hot table control module, the luminescent sample is arranged in the cold-hot table, and the cold-hot table is in communication connection with the measurement and control system platform through the cold-hot table control module.
The data acquisition system comprises at least one of a dark field brightness meter for acquiring the absolute brightness of the luminous sample, a photomultiplier tube for acquiring the relative brightness of the luminous sample, a fiber optic spectrometer for recording the emission spectrum of the luminous sample and the like.
The dark field brightness meter is in communication connection with the measurement and control system platform, the photomultiplier is in communication connection with the measurement and control system platform through a high-voltage power supply and a microammeter respectively, the optical fiber spectrometer is in communication connection with the measurement and control system platform, and the optical fiber spectrometer collects the luminescence spectrum of the luminescent sample through optical fibers.
The measurement and control system platform comprises a human-computer interface, wherein the human-computer interface comprises a connecting module, a resetting module, a parameter setting module, a data acquisition module, a state indicating module and an emergency stop module; the connection module is used for realizing the communication between the measurement and control system platform and the hardware part; the reset module is used for initializing a hardware part and giving initial values to related parameters; the parameter setting module is used for presetting a file name, a saving path and working parameters of a hardware part, wherein the working parameters of the hardware part can comprise a time parameter, a temperature parameter and a data acquisition parameter, deducting the background of the fiber spectrometer and judging whether the set integration time is proper or not; the data acquisition module is used for recording, processing and storing the test data acquired by the acquisition system; the state indicating module is used for feeding back the running state of the test system and tracking the test progress in real time; the scram module is used for rapidly ending the running test system.
The multifunctional optical testing method based on LabVIEW comprises the following steps:
1) starting an optical test system;
2) starting a hardware part, operating a measurement and control system platform, and entering a human-computer interface;
3) judging whether the emergency stop module is triggered, and if so, immediately stopping the optical test system; if not, executing step 4);
4) selecting a test mode, and operating a connection module to connect the hardware part;
5) judging whether the connection in the step 4) is successful, if not, returning to the step 4); if yes, executing step 6);
6) selecting the type of a light source, selecting the start-stop condition of hardware as required, and operating a reset module to reset;
7) judging whether the resetting in the step 6) is successful, if not, returning to the step 6); if yes, executing step 8);
8) the bullet frame confirms the start-stop condition of each hardware again, presets a file name and a storage path, presets hardware working parameters according to the flash prompt of the parameter setting module, and clicks a setting completion button to operate the parameter setting module;
9) the LabVIEW-based measurement and control system platform sends corresponding instructions to the hardware part, executes corresponding actions and transmits test data to the data acquisition module in real time;
10) the period testing system detects whether the emergency stop module is triggered in real time, and if so, the optical testing system is stopped; if not, the execution is continued until the data acquisition is finished.
11) And processing data according to the test mode, saving the data to the specified path, and returning to the step 6).
In step 11), the data processing includes, but is not limited to, absolute luminous intensity (luminance in cd/m) collected based on dark field luminance meter2) Performing least square normal linear fitting on relative luminous intensity (dimensionless) collected by the photomultiplier in the same time zone, and extrapolating to all relative luminous intensity data points collected by the photomultiplier through the obtained linear fitting coefficient to obtain absolute luminous intensity (luminance, in cd/m) far lower than the detection limit of a dark field luminance meter2)。
The invention aims to integrate a plurality of excitation light sources, a plurality of optical detectors and a temperature controller based on LabVIEW, and develop a multifunctional optical test system capable of realizing automatic control of five test modes, namely a long afterglow decay curve, a thermoluminescence curve, a time-resolved phosphorescence spectrum, a fluorescence thermal quenching and a fluorescence thermal stability; based on the system, a dual-detector combination of a dark-field luminance meter (which can obtain absolute luminance, but has low detection limit and long test response time) and a photomultiplier (which has extremely high detection sensitivity, short test response time and obtains relative luminance intensity) is adopted, so that the ultrahigh-sensitivity absolute luminance characterization method is provided for the long afterglow attenuation curve test.
Compared with the prior art, the invention has at least the following beneficial effects or advantages:
the invention develops a measurement and control system platform capable of realizing five test modes of a long afterglow attenuation curve, a thermoluminescence curve, a time-resolved phosphorescence spectrum, a fluorescence thermal quenching and a fluorescence thermal stability by integrating a plurality of excitation light sources, a plurality of optical detectors and a temperature controller and based on LabVIEW. Compared with a conventional spectrometer, the system has obvious advantages in test repeatability, convenience and function expansibility, can efficiently carry out cooperative control on a plurality of functional modules, realizes programmed setting of working time sequence of equipment, effectively reduces manual operation errors, and improves efficiency and reliability of optical performance test. The test system has important innovation particularly on a test method of a long afterglow attenuation curve, namely, the change curve of the luminous intensity along with time is respectively measured by a double-detector combination based on a dark field luminance meter (absolute luminous intensity can be obtained, but the detection limit is low, the test response time is long) and a photomultiplier (detection sensitivity is extremely high, the test response time is short, and relative luminous intensity is obtained), and the long afterglow luminous attenuation curve which is far lower than the detection limit of the dark field luminance meter and has an absolute luminance unit is obtained by performing linear fitting on data acquired by the photomultiplier, so that the defects in the existing long afterglow luminous attenuation curve test are overcome.
Drawings
Fig. 1 is a block diagram of a multifunctional optical test system according to an embodiment of the present invention.
FIG. 2 is a diagram of the hardware connection of the test system in the embodiment of the present invention. In FIG. 2, 1-darkroom; 2-a light source control module; 3-a light source; 4-a cold and hot table control module; 5-cooling and heating; 6-sample holder; 7-sample; 8-dark field luminance meter; 9-a photomultiplier tube; 10-a high voltage power supply; 11-microammeter; 12-a fiber optic spectrometer; 13-an optical fiber; 14-a computer host; 15-display screen.
Fig. 3 is a control flow chart of the measurement and control system platform.
Fig. 4 is the data processing result in the long persistence test mode.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Fig. 1 is a block diagram of a multifunctional optical test system according to an embodiment of the present invention. The test system can realize optical performance tests in five modes of long afterglow, thermoluminescence, constant temperature/variable temperature phosphorescence, thermal quenching and thermal stability, and comprises a hardware part and a measurement and control system platform.
Fig. 2 is a connection diagram of hardware parts in the embodiment of the present invention. The hardware part comprises a darkroom 1, a light source control module 2, a light source 3, a cold and hot table control module 4, a cold and hot table 5, a sample support 6, a sample 7, a dark field brightness meter 8, a photomultiplier 9, a high-voltage power supply 10, a microammeter 11, a fiber spectrometer 12, an optical fiber 13, a computer host 14 and a display screen 15. The components belong to four systems of a light source system, a temperature control system, a data acquisition system and a computer host. The light source system comprises a light source control module 2 and a light source 3, wherein the light source 3 is connected with a computer host 14 through the light source control module 2, the light source 3 comprises but is not limited to one of a xenon light source, an LED light source, a laser light source and an ultraviolet low-pressure mercury lamp light source, and the light source control module 2 corresponding to the xenon light source is a xenon control box which is independently researched and developed based on a single chip microcomputer; the light source control modules 2 corresponding to the LED light source and the laser light source are programmable direct current power supplies; the light source control module 2 corresponding to the ultraviolet low-pressure mercury lamp is a USB relay. The temperature control system comprises a cold and hot table control module 4 and a cold and hot table 5, wherein a luminous sample 7 to be detected is arranged on a sample support 6 connected with the cold and hot table 5, and the cold and hot table 5 is in communication connection with a computer host 14 through the cold and hot table control module 4. The data acquisition system comprises at least one of a dark field brightness meter 8, a photomultiplier (comprising a photomultiplier 9, a high voltage power supply 10 and a microammeter 11) and an optical fiber spectrometer (comprising an optical fiber spectrometer 12 and an optical fiber 13), wherein the dark field brightness meter 8 is in communication connection with a computer host 14, the photomultiplier 9 is in communication connection with the computer host through the high voltage power supply 10 for controlling the working voltage of the photomultiplier and the microammeter 11 for acquiring current signals, the optical fiber spectrometer 12 is in communication connection with the computer host 14, and the optical fiber spectrometer 12 acquires the luminescence spectrum of a luminescent sample 7 through the optical fiber 13.
The measurement and control system platform is developed based on a LabVIEW platform, and the cooperative control of the hardware part is realized through an RS232 serial port or a USB interface. The system comprises a connecting module, a resetting module, a parameter setting module, a data acquisition module, a state indicating module and an emergency stop module, and is shown in figure 1. The connection module is used for realizing the communication between the measurement and control system platform and the hardware part, and the test mode can be selected before the module runs. And 9 virtual controls of the connection module correspond to the hardware parts one by one respectively. In the actual test, different test modes correspond to different hardware combinations, for example, a long afterglow mode does not need a cold-hot table, a thermoluminescent mode does not need a dark field luminance meter, and phosphorescence, thermal quenching and thermal stabilization modes do not need a dark field luminance meter and a photomultiplier, so that corresponding hardware equipment can be not started, and corresponding virtual controls are forbidden and ashed. The reset module is used for initializing the called hardware equipment, zeroing related test data, and selecting the start-stop conditions of the excitation light source and the hardware equipment before the module runs. Wherein, the external options of the excitation light source part respectively correspond to the programmable direct current power supply and the selectable light source controlled by the USB relay. The parameter setting module is used for presetting a file name, a saving path and working parameters of the called hardware equipment, including time parameters, temperature parameters and data acquisition parameters, deducting the background of the fiber spectrometer and judging whether the set integration time is proper or not. The data acquisition module is used for recording, processing and storing the test data corresponding to the called acquisition system. The state indicating module is used for feeding back the running state of the test system in real time and tracking the test progress. The scram module is used for rapidly ending the running test system. In addition, in order to facilitate the operation and avoid the false touch, the operation interface which has completed the corresponding action is disabled and ashed in the operation process of the measurement and control system platform, which is described in detail in the operation embodiment of the measurement and control system platform.
Fig. 3 is a control flow chart of the measurement and control system platform. Firstly, starting a hardware part, operating a measurement and control system platform, and entering a human-computer interface; judging whether the emergency stop module is triggered, and if so, immediately stopping the optical test system; otherwise, selecting a test mode, and clicking a connection button to operate the connection module; connecting the hardware parts; if the connection fails, correcting according to the error prompt and exiting the program to repeat the steps; otherwise, selecting the type of the light source, selecting the start-stop condition of the hardware as required, and clicking a reset button to operate the reset module; if the reset fails, correcting and resetting again according to the error prompt; otherwise, confirming the forbidden condition of each hardware again by the popup box, presetting a file name and a storage path by the popup box, presetting hardware working parameters according to the flashing prompt of the parameter setting module, and clicking a setting completion button to operate the parameter setting module; then clicking a start button, operating a data acquisition module, sending a corresponding instruction to the hardware part by the measurement and control system platform, executing corresponding work, and transmitting test data to the data acquisition module in real time; the period testing system detects whether the emergency stop module is triggered in real time, if so, corresponding data storage and equipment zeroing are immediately carried out, and the optical testing system is stopped; otherwise, continuing to execute until the data acquisition is finished; the necessary data processing is performed according to the selected test mode, and then the corresponding data and hardware operating parameters are saved and returned to the reset to wait for another test in the mode.
Specific examples are given below.
Example 1
This is one example of a long persistence luminescence property test. And operating the measurement and control system platform, selecting a long afterglow test mode (the cold and hot table is forbidden by default), and operating the connection module. A xenon lamp is selected as an excitation light source, a dark field brightness meter, a photomultiplier and a fiber optic spectrometer are started, and a reset module is operated. And confirming the hardware access condition, presetting a file name and a storage path, presetting the working voltage and the working mode of the photomultiplier tube, deducting the background of the fiber spectrometer by the aid of the popup frame, and clicking a setting completion button to operate a parameter setting module after hardware working parameters are preset. Clicking the start button runs the test system: starting the xenon lamp to ignite the xenon lamp to excite the sample for about 12 s; after excitation for 30s, the xenon lamp is turned off; and after the stabilization for 2s, the dark field luminance meter, the photomultiplier and the fiber spectrometer start to acquire long afterglow luminescence data at the same time and transmit the long afterglow luminescence data to the data acquisition module in real time. Wherein the dark field brightness meter is used for collecting 20min, and the photomultiplier and the fiber spectrometer are used for collecting 60 min. And after the collection is finished, processing data, automatically storing test data and hardware working parameters, returning the voltage of the photomultiplier to zero, and returning to a reset position to wait for another test in the mode. The data processing flow is as follows: absolute luminous intensity (luminance in cd/m) collected based on dark field luminance meter2) Performing least square linear fitting on relative luminous intensity (dimensionless) collected by the photomultiplier in the same time zone, and extrapolating to the intensity of the photomultiplier through the obtained linear fitting coefficientAll relative luminescence intensity data points collected, the absolute luminescence intensity (luminance in cd/m) well below the detection limit of the dark field luminance meter is obtained2). The corresponding data processing results are shown in fig. 4.
Example 2
This is one example of a thermoluminescence property test. And operating the measurement and control system platform, selecting a thermoluminescent test mode (forbidding a dark field brightness meter by default), and operating the connection module. A xenon lamp is selected as an excitation light source, a cold-hot table, a photomultiplier tube and a fiber spectrometer are started, and a reset module is operated. And confirming the hardware access condition, presetting a file name and a storage path, presetting the working voltage and the working mode of the photomultiplier tube, deducting the background of the fiber spectrometer by the aid of the popup frame, and clicking a setting completion button to operate a parameter setting module after hardware working parameters are preset. Clicking the start button runs the test system: the cold and hot table is reduced to 280K of excitation temperature at the speed of 50K/min and is stabilized for 18 s; starting the xenon lamp to ignite the xenon lamp to excite the sample for about 12 s; turning off the xenon lamp after exciting for 60 s; the cold and hot table is reduced to the collection initial temperature of 200K at the speed of 50K/min and is kept stable for 20 s; the temperature of the cold and hot table starts to rise at the speed of 30K/min, and meanwhile, the photomultiplier and the fiber spectrometer start to collect thermoluminescent data and transmit the thermoluminescent data to the data collection module in real time. And when the cold and hot table rises to the collection final temperature of 550K, processing data after collection is finished, automatically storing the test data and the hardware working parameters, returning the voltage of the photomultiplier to zero, returning the cold and hot table to the room temperature, and returning the cold and hot table to the reset position to wait for another test in the mode.
Example 3
This is one example of a constant temperature phosphor performance test. And operating the measurement and control system platform, selecting a phosphorescence test mode (forbidding a dark field brightness meter and a photomultiplier tube by default), further setting the phosphorescence test mode to be a constant temperature mode, and operating the connection module. And selecting a proper external excitation light source, starting the cold and hot table and the optical fiber spectrometer, and operating the reset module. And confirming the hardware access condition again by the aid of the popup box, presetting a file name and a storage path, deducting the background of the fiber spectrometer, and clicking a setting completion button to operate the parameter setting module after hardware working parameters are preset. Clicking the start button runs the test system: the cold and hot table is reduced to the collection initial temperature of 200K at the speed of 50K/min, and an external light source is started to excite the sample after the temperature is stabilized for 60 s; and after 60s of excitation, the external light source is turned off, and meanwhile, the fiber spectrometer starts to continuously collect phosphorescence data and transmits the phosphorescence data to the data collection module in real time. Acquisition does not end until after the STOP is clicked. And processing data after the collection is finished, automatically storing the test data and hardware working parameters, returning the cold and hot tables to the room temperature, and returning to the reset position to wait for another test in the mode.
Example 4
This is one example of a temperature-changing phosphor performance test. And operating the measurement and control system platform, selecting a phosphorescence test mode (a dark field brightness meter and a photomultiplier are forbidden by default), further setting the phosphorescence test mode to be a temperature change mode, and operating the connection module. And selecting a proper external excitation light source, starting the cold and hot table and the optical fiber spectrometer, and operating the reset module. And confirming the hardware access condition again by the aid of the popup box, presetting a file name and a storage path, deducting the background of the fiber spectrometer, and clicking a setting completion button to operate the parameter setting module after hardware working parameters are preset. Clicking the start button runs the test system: the cold and hot table is reduced to the collection initial temperature of 150K at the speed of 50K/min, and an external light source is started to excite the sample after the temperature is stabilized for 60 s; and after the excitation is carried out for 60s, the external light source is closed, and meanwhile, the optical fiber spectrometer collects first variable-temperature phosphorescence data and transmits the first variable-temperature phosphorescence data to the data collection module in real time. Subsequently, the cold and hot stage is raised to 200K corresponding to the set temperature interval of 50K at the rate of 50K/min, and the operation is repeated to acquire second temperature-changing phosphorescence data. And the collection is not finished until the cold and hot table finishes all actions according to the theoretical working curve of the data collection module. And processing data after the collection is finished, automatically storing the test data and hardware working parameters, returning the cold and hot tables to the room temperature, and returning to the reset position to wait for another test in the mode.
Example 5
This is one example of a thermal quenching performance test. And operating the measurement and control system platform, selecting a thermal quenching test mode (forbidding a dark field brightness meter and a photomultiplier tube by default), and operating the connection module. And selecting a proper external excitation light source and setting the external excitation light source to be continuously started, starting the cold and hot table and the fiber spectrometer, and operating the reset module. And confirming the hardware access condition again by the aid of the popup box, presetting a file name and a storage path, deducting the background of the fiber spectrometer, and clicking a setting completion button to operate the parameter setting module after hardware working parameters are preset. Clicking the start button runs the test system: the cold and hot table is heated to the collection initial temperature of 300K at the speed of 50K/min, and an external light source is started to continuously irradiate the sample; after 60s of stabilization, the fiber optic spectrometer collects the first thermal quenching data and transmits the real-time data to the data collection module. The cold and hot stage is then raised at a rate of 50K/min to 350K for the set temperature interval of 50K and the above operation is repeated and a second thermal quench data is collected. And the collection is not finished until the cold and hot table finishes all actions according to the theoretical working curve of the data collection module. And processing data after the collection is finished, automatically storing the test data and hardware working parameters, returning the cold and hot tables to the room temperature, and returning to the reset position to wait for another test in the mode.
Example 6
This is one example of a thermal stability performance test. And operating the measurement and control system platform, selecting a thermal stability test mode (forbidding a dark field brightness meter and a photomultiplier tube by default), and operating the connection module. And selecting a proper external excitation light source, setting the external excitation light source to be intermittently started, starting the cold and hot table and the fiber spectrometer, and operating the reset module. And confirming the hardware access condition again by the aid of the popup box, presetting a file name and a storage path, deducting the background of the fiber spectrometer, and clicking a setting completion button to operate the parameter setting module after hardware working parameters are preset. Clicking the start button runs the test system: the cold and hot table is heated to the collection initial temperature of 500K at the speed of 50K/min, and simultaneously an external light source is started to excite the sample, and the sample is kept stable for 120 s; and after the optical fiber spectrometer collects the first thermal stability data, the external light source is closed, and the real-time data is transmitted to the data collection module. And keeping the temperature of the cold and hot table at 500K, turning on the external light source again after 10min, repeating the operation, and collecting second thermal stability data. Acquisition does not end until after the STOP is clicked. And processing data after the collection is finished, automatically storing the test data and hardware working parameters, returning the cold and hot tables to the room temperature, and returning to the reset position to wait for another test in the mode.
The invention realizes the automatic control of the test of five optical properties of the long afterglow decay curve, the thermoluminescence curve, the time-resolved phosphorescence spectrum, the fluorescence thermal quenching and the fluorescence thermal stability, and particularly has great innovation on the test method of the long afterglow decay curve, namely, a double detector, a dark field luminance meter and a photomultiplier are adopted to respectively measure absolute and relative luminous intensities, and then an absolute luminous brightness decay curve far lower than the detection limit of the dark field luminance meter is obtained through data fitting, thereby making up the defects of the test of the existing long afterglow luminous decay curve.
Claims (6)
1. A multifunctional optical test system based on LabVIEW is characterized in that the multifunctional optical test system irradiates exciting light to a sample and detects afterglow, thermoluminescence and phosphorescence of the irradiated sample or fluorescence of the irradiated sample, and comprises a test hardware part and a test and control system platform based on LabVIEW;
the test hardware part comprises:
a light source system for exciting a luminescent sample;
the temperature control system is used for controlling the temperature of the luminous sample; and
the data acquisition system is used for acquiring at least one test data of afterglow, thermoluminescence, phosphorescence and fluorescence of the luminescent sample;
the light source system, the temperature control system and the data acquisition system are in coupling connection and/or communication connection with the measurement and control system platform; and
the LabVIEW-based measurement and control system platform is used for automatically controlling the test hardware part and comprises a human-computer interface, wherein the human-computer interface comprises:
the connection module is used for realizing the communication between the measurement and control system platform and the hardware part;
the reset module is used for initializing the hardware part and giving initial values to the related parameters;
the parameter setting module is used for presetting a file name, a saving path and working parameters of a hardware part, deducting the background of the fiber spectrometer and judging whether the set integration time is proper or not;
the data acquisition module is used for recording, processing and storing the test data acquired by the acquisition system;
the state indicating module is used for tracking and feeding back the test progress and the running state of the test system in real time; and
the emergency stop module is used for rapidly ending the running test system;
the testing hardware part is configured by the LabVIEW-based measurement and control system platform to test the long afterglow luminescence property, the thermoluminescence property, the time-resolved phosphorescence spectrum, the fluorescence thermal quenching property and the fluorescence thermal stability of the luminescent material.
2. The LabVIEW-based multifunctional optical test system as claimed in claim 1, wherein the light source system comprises a light source and a light source control module, the light source comprises but is not limited to a xenon lamp light source, an LED light source, a laser light source and an ultraviolet low pressure mercury lamp light source, and the light source is in communication connection with the measurement and control system platform through the light source control module.
3. The LabVIEW-based multifunctional optical test system as claimed in claim 1, wherein the temperature control system comprises a cold-hot stage and a cold-hot stage control module, the luminescent sample is placed on the cold-hot stage, and the cold-hot stage is in communication with the measurement and control system platform through the cold-hot stage control module.
4. The LabVIEW-based multifunctional optical testing system as claimed in claim 1, wherein the data acquisition system comprises but is not limited to at least one of a dark field luminance meter for acquiring absolute luminance of the luminescence sample, a photomultiplier tube for acquiring relative luminance of the luminescence sample, and a fiber optic spectrometer for recording emission spectrum of the luminescence sample; the dark field brightness meter is in communication connection with the measurement and control system platform, the photomultiplier is in communication connection with the measurement and control system platform through a high-voltage power supply and a microammeter respectively, the optical fiber spectrometer is in communication connection with the measurement and control system platform, and the optical fiber spectrometer collects the luminescence spectrum of the luminescent sample through optical fibers.
5. The multifunctional optical testing method based on LabVIEW is characterized in that the multifunctional optical testing system based on LabVIEW as claimed in claims 1-4 is adopted, and the method comprises the following steps:
1) starting an optical test system;
2) starting a hardware part, operating a measurement and control system platform, and entering a human-computer interface;
3) judging whether the emergency stop module is triggered, and if so, immediately stopping the optical test system; if not, executing step 4);
4) selecting a test mode, and operating a connection module to connect the hardware part;
5) judging whether the connection in the step 4) is successful, if not, returning to the step 4); if yes, executing step 6);
6) selecting the type of a light source, selecting the start-stop condition of hardware as required, and operating a reset module to reset;
7) judging whether the resetting in the step 6) is successful, if not, returning to the step 6); if yes, executing step 8);
8) the bullet frame confirms the start-stop condition of each hardware again, presets a file name and a storage path, presets hardware working parameters according to the flash prompt of the parameter setting module, and clicks a setting completion button to operate the parameter setting module;
9) the LabVIEW-based measurement and control system platform sends corresponding instructions to the hardware part, executes corresponding actions and transmits test data to the data acquisition module in real time;
10) the period testing system detects whether the emergency stop module is triggered in real time, and if so, the optical testing system is stopped; if not, continuing to execute until the data acquisition is finished;
11) and processing data according to the test mode, saving the data to the specified path, and returning to the step 6).
6. The LabVIEW-based multifunctional optical testing method as claimed in claim 5, wherein in step 11), the data processing includes but is not limited to least squares linear fitting of absolute luminescence intensity collected by a dark-field luminance meter to relative luminescence intensity (dimensionless) collected by the photomultiplier tube in the same time zone, and extrapolating to all relative luminescence intensity data points collected by the photomultiplier tube by the obtained linear fitting coefficients to obtain absolute luminescence intensity far below the detection limit of the dark-field luminance meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149032.2A CN109164773B (en) | 2018-09-29 | 2018-09-29 | A multifunctional optical testing system and method based on LabVIEW |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149032.2A CN109164773B (en) | 2018-09-29 | 2018-09-29 | A multifunctional optical testing system and method based on LabVIEW |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109164773A CN109164773A (en) | 2019-01-08 |
| CN109164773B true CN109164773B (en) | 2020-03-27 |
Family
ID=64892957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811149032.2A Active CN109164773B (en) | 2018-09-29 | 2018-09-29 | A multifunctional optical testing system and method based on LabVIEW |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109164773B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092374B (en) * | 2021-04-12 | 2022-11-15 | 青岛科技大学 | Small vacuum photoelectric test system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969230A (en) * | 2013-01-31 | 2014-08-06 | 大塚电子株式会社 | Measurement device and measurement method |
| CN104502315A (en) * | 2014-12-02 | 2015-04-08 | 中国科学院半导体研究所 | Micro-region fluorescent scanning measurement system |
| CN104792710A (en) * | 2015-04-13 | 2015-07-22 | 杭州远方光电信息股份有限公司 | Object optical property measuring device |
| CN106461463A (en) * | 2014-05-23 | 2017-02-22 | 浜松光子学株式会社 | Optical measurement device and optical measurement method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3855485B2 (en) * | 1998-09-09 | 2006-12-13 | 東ソー株式会社 | Scanner type fluorescence detector |
| US6621275B2 (en) * | 2001-11-28 | 2003-09-16 | Optonics Inc. | Time resolved non-invasive diagnostics system |
| WO2011017182A1 (en) * | 2009-08-03 | 2011-02-10 | Sof-Tek Integrators, Inc., Dba Op-Test, Inc. | System and method of testing high brightness led (hbled) |
| CN103091289B (en) * | 2012-12-21 | 2014-12-03 | 吉林大学 | Automatic experimental platform based on laser-induced breakdown spectroscopy analysis technology |
| CN106370202A (en) * | 2016-10-11 | 2017-02-01 | 北京航空航天大学 | Online testing method and device for comprehensive performance of detector for gyroscope |
-
2018
- 2018-09-29 CN CN201811149032.2A patent/CN109164773B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969230A (en) * | 2013-01-31 | 2014-08-06 | 大塚电子株式会社 | Measurement device and measurement method |
| CN106461463A (en) * | 2014-05-23 | 2017-02-22 | 浜松光子学株式会社 | Optical measurement device and optical measurement method |
| CN104502315A (en) * | 2014-12-02 | 2015-04-08 | 中国科学院半导体研究所 | Micro-region fluorescent scanning measurement system |
| CN104792710A (en) * | 2015-04-13 | 2015-07-22 | 杭州远方光电信息股份有限公司 | Object optical property measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109164773A (en) | 2019-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101592659B (en) | System and method for quantitative detection of test strips on basis of continuous fluorescent-substance markers | |
| EP3513172B1 (en) | System and method for time-resolved fluoroimmunoassay detection | |
| CN103698682B (en) | A kind of cmos image sensor based on FPGA technology test device | |
| JPH11508352A (en) | Modular measurement system for high-speed digital signal processing of luminescence | |
| JP5124498B2 (en) | Automatic analyzer | |
| CN101551345B (en) | Spectrometer based on X ray inspired light source | |
| CN201535776U (en) | Quantitative detection system based on test strip marked with constantly illuminating material | |
| CN203688443U (en) | Biological ultraweak photon radiation spectroscopic detector | |
| CN104764727A (en) | Fluorescence imaging analysis system and fluorescence imaging analysis method thereof | |
| CN105928911A (en) | Calibration method of fluorescence detection instrument | |
| CN109164773B (en) | A multifunctional optical testing system and method based on LabVIEW | |
| CN202256155U (en) | Egg freshness detector based on biological ultraweak photon emission | |
| CN106970058A (en) | The minimal feeding instrument and detection method in a kind of pair of fluorescent emission face | |
| CN103411679B (en) | Chrominance light detection system and method | |
| CN103278781B (en) | Electric characteristic analyzer for a pulse xenon lamp | |
| CN205898683U (en) | Calibration device of fluorescence detector ware | |
| CN106662530A (en) | Method and apparatus for optical measurement of liquid sample | |
| CN103868906B (en) | Raman spectroscopy system and Raman spectroscopy measurement method | |
| CN217709486U (en) | Light-operated nucleic acid detection device | |
| CN213456663U (en) | SF based on Raman spectrum6Decomposition characteristic component detection and analysis device | |
| CN105842218B (en) | A kind of micro-fluidic accurate quantification fluorescence immunoassay detection platform of nanometer | |
| CN214583959U (en) | Blue light leakage detection system | |
| CN109187480A (en) | A kind of peanut oil doping soybean oil discriminating gear of double excitation LIF technology | |
| CN205139013U (en) | But fluorescent substance concentration detection device of automatically regulated luminous intensity | |
| US7528952B2 (en) | Hand-held fluorescence polarimeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |