CN105698932B - The spectra collection system and spectra collection method of flashing type light source - Google Patents
The spectra collection system and spectra collection method of flashing type light source Download PDFInfo
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- CN105698932B CN105698932B CN201610152317.6A CN201610152317A CN105698932B CN 105698932 B CN105698932 B CN 105698932B CN 201610152317 A CN201610152317 A CN 201610152317A CN 105698932 B CN105698932 B CN 105698932B
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- 238000001228 spectrum Methods 0.000 title claims abstract description 156
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004611 spectroscopical analysis Methods 0.000 claims abstract description 51
- 230000010354 integration Effects 0.000 claims abstract description 30
- 229910052724 xenon Inorganic materials 0.000 claims description 33
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 33
- 230000001960 triggered effect Effects 0.000 claims description 27
- 238000013480 data collection Methods 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 230000003595 spectral effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010183 spectrum analysis Methods 0.000 description 4
- 241001269238 Data Species 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 229910052805 deuterium Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/027—Control of working procedures of a spectrometer; Failure detection; Bandwidth calculation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J2003/283—Investigating the spectrum computer-interfaced
- G01J2003/2843—Processing for eliminating interfering spectra
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J2003/2886—Investigating periodic spectrum
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The present invention discloses the spectra collection system and spectra collection method of a kind of flashing type light source, including flashing type light source, spectrometer, controller, the output end of controller is electrically connected with flashing type light source input terminal, the input of controller, the input of output end and spectrometer, output end is connected, the controller is used for the triggering times of the input flashing type light source according to setting, the average time of the spectrometer time of integration and spectrum, it is synchronous with spectrometer to control flashing type light source, and the light source light spectrum and half-light modal data information of spectrometer collection are effectively obtained in real time, according to the average time of spectrum, obtain average light source spectroscopic data and average half-light modal data, average half-light modal data, which is subtracted, finally by the average light source spectroscopic data of acquisition obtains the spectroscopic data of each flashing type light source.The present invention makes flashing type light source and spectrometer data collaborative work, and improves spectroscopic data precision.
Description
Technical field
The present invention relates to field of optical detection, and in particular to a kind of the spectra collection system and spectra collection of flashing type light source
Method.
Background technique
Light is issued by light source, mainly uses spectrum analysis light source at present, and most important component is just in spectrum analysis
It is spectrometer and lamp source.Spectrometer is a kind of important optical gauge, by the analysis to characteristic spectral line, to substance at
Divide and carries out qualitative and quantitative analysis.Another important devices of spectrum analysis are exactly light source, and light source performance stabilization is to carry out
The basic demand of spectrum analysis.There are many kinds of the light sources of spectrum, xenon lamp, deuterium lamp, mercury lamp etc..Therefore light source can be divided into continuous light source
With flashing type light source, continuous light source (such as deuterium lamp light source), due to the continuity of light source, spectrometer can be acquired at any time
To spectral information.But for flashing type light source (such as xenon flash lamp), due to the discontinuity of light source, and lighting time is short, light source
The moment lighted, spectral information are not easy to capture, so must be in the spectral information of the moment of light source igniting acquisition light source, simultaneously
Ensure to collect light source is available and the intensity of light source can not ether it is weak also can not ether it is strong, light source is too weak, and system noise increases,
The useful information carried in spectrum cannot be obtained completely；Light intensity is possible to by force very much the maximum range more than spectrometer, influences to measure
Precision and result.It can not achieve flashing type light source at present and cooperate with spectrometer, so that measurement performance, data are reliably poor.
Summary of the invention
An object of the present invention is for overcome the deficiencies in the prior art, to provide a kind of spectra collection of flashing type light source
System makes flashing type light source and spectrometer data collaborative work, so that the spectroscopic data made is relatively reliable useful.
The second object of the present invention is to for overcome the deficiencies in the prior art, provide a kind of spectra collection of flashing type light source
The acquisition method of system makes the acquisition method improve spectroscopic data precision.
An object of the present invention can be implemented with the following technical solutions:
A kind of spectra collection system of flashing type light source, including flashing type light source, spectrometer, it is characterised in that: further include
Controller, output end and the flashing type light source input terminal of the controller are electrically connected, input, output end and the light of the controller
The input of spectrometer, output end are connected, and the controller is used for the triggering times of the input flashing type light source according to setting, spectrometer
The average time of the time of integration and spectrum, control flashing type light source is synchronous with spectrometer, and effective acquisition spectrometer in real time
The light source light spectrum and half-light modal data information of acquisition.
The controller includes PC machine and hardware control module, the input of the output end and hardware control module of the PC machine
End is connected, and the light source triggering port on hardware control module is electrically connected with the triggering pin of flashing type light source, hardware control module
On spectrometer triggering port be electrically connected with the triggering pin of spectrometer, the PC machine be used for be arranged input flashing type light source touching
The average time of number, the spectrometer time of integration and spectrum is sent out, and sends control command to hardware control module, the hardware control
Molding block parses received control command for receiving control command, controls corresponding triggering according to parsing result
Port carries out corresponding trigger action.
The hardware control module includes circuit board, single-chip microcontroller and serial ports, and the single-chip microcontroller and serial port setting are in circuit board
On.
The flashing type light source uses xenon lamp.
The second object of the present invention can be implemented with the following technical solutions:
A kind of spectra collection method of flashing type light source, it is characterised in that: including any sudden strain of a muscle of Claims 1-4
The spectra collection system of bright formula light source, acquisition method are as follows:
Average time of the pulse-triggered number B of input flashing type light source, the spectrometer time of integration and spectrum in the controller
Number N, the controller parse the data information of input, judge the pulse number for triggering flashing type light source；
If pulse-triggered number B >=1 of flashing type light source, for the light source light spectrum for acquiring flashing type light source, the control
Device processed starts to count the time of integration of spectrometer, after 1~10 microsecond that is delayed, controller first according to command triggers spectrometer
Flashing type light source is triggered according to triggering times, makes flashing type light source igniting, spectrometer stops after reaching the time of integration of spectrometer
Data are only acquired, controller reads light source light spectrum data from spectrometer, completes the light source light spectrum acquisition of a flashing type light source
Period acquires the light source light spectrum data of N number of period flashing type light source according to the average time N of spectrum, and N number of period is flashed
The light source light spectrum data of formula light source obtain average light source spectroscopic data divided by N；
If the pulse-triggered number B=0 of flashing type light source, for the half-light spectrum for acquiring spectrometer, the controller touching
Shine spectrometer, starts the time of integration for counting spectrometer, and spectrometer stops data collection after the time of integration for reaching spectrometer,
Controller reads half-light modal data from spectrometer, the half-light spectrum collection period an of spectrometer is completed, according to being averaged for spectrum
Times N acquires N number of period half-light modal data, and the half-light modal data in N number of period is obtained average half-light modal data divided by N；
Average half-light modal data, which is subtracted, by the average light source spectroscopic data of acquisition obtains the spectrum of each flashing type light source
Data.
The average light source spectroscopic data of a flashing type light source is acquired, the average half-light spectrum an of spectrometer is then acquired
Data, the average half-light modal data that the average light source spectroscopic data of the flashing type light source subtracts spectrometer obtain the secondary flashing type
The spectroscopic data of light source.
After the average light source spectroscopic data for acquiring multiple flashing type light source, the average half-light spectrum number an of spectrometer is acquired
According to the average half-light modal data that the average light source spectroscopic data of multiple flashing type light source subtracts the secondary spectrometer is repeatedly dodged
The spectroscopic data of bright formula light source.
Triggering times B≤10 of the flashing type light source of the light source light spectrum collection period of one flashing type light source.
The light source light spectrum collection period of each flashing type light source is T, 150ms≤T≤250ms.
Average time N >=1 of the spectrum, N≤50.
Beneficial effects of the present invention: the present invention includes flashing type light source, spectrometer, controller, the output of the controller
End is electrically connected with flashing type light source input terminal, and the input of the controller, output end are connected with the input of spectrometer, output end,
The controller is used for average time according to the triggering times for inputting flashing type light source of setting, the spectrometer time of integration and spectrum
Number, control flashing type light source is synchronous with spectrometer, and the effective light source light spectrum for obtaining spectrometer collection and half-light spectrum in real time
Data information.It is synchronous with flashing type light source by controller control spectrometer, spectral information, root can be effectively obtained in real time
According to the average time for needing self-setting spectrum, the intensity of spectrum is adjusted by software control, can dynamically acquire half-light spectrum,
Improve the measurement accuracy of spectroscopic data.Average time is more, and spectrum is more stable.
PC machine connect by serial ports with hardware control module, the light source triggering port on hardware control module pass through electric wire and
The triggering pin of flashing type light source is electrically connected, and the spectrometer triggering port on hardware control module passes through the touching of electric wire and spectrometer
Foot of carrying out the coffin upon burial electrical connection, PC machine send control command to hardware control module, after hardware control module receives order, to corresponding
Triggering port carry out the port of triggering spectrometer, spectrometer first starts to acquire data, after several microseconds, triggers flashing type light source
Triggering pin, light flashing type light source.PC machine reads spectrometer data.Use PC software and hardware circuit co- controlling spectrum
Instrument is synchronous with flashing type light source.
A kind of spectra collection method of flashing type light source, the light including any flashing type light source of Claims 1-4
Acquisition system is composed, acquisition method is as follows:
Average time of the pulse-triggered number B of input flashing type light source, the spectrometer time of integration and spectrum in the controller
Number N.The controller parses the data information of input, judges the pulse number for triggering flashing type light source；
If pulse-triggered number B >=1 of flashing type light source, for acquire flashing type light source light source light spectrum, according to light
The average time N of spectrum, acquires the light source light spectrum data of N number of period flashing type light source, and by the light source of N number of period flashing type light source
Spectroscopic data obtains average light source spectroscopic data divided by N, which makes the light source light spectrum data of the secondary acquisition
It is more acurrate.
If the pulse-triggered number B=0 of flashing type light source, composed to acquire the half-light of spectrometer, according to the flat of spectrum
Equal times N acquires N number of period half-light modal data, and N number of period half-light modal data is obtained average half-light modal data divided by N,
The average half-light spectrum number keeps the half-light modal data of the secondary acquisition more acurrate.
Average half-light modal data, which is subtracted, according to the average light source spectroscopic data of acquisition obtains the spectrum of each flashing type light source
Data.Average half-light modal data is deducted in average light source spectroscopic data, can effectively removing half-light spectrum in real time, (background is made an uproar
Sound), be conducive to the compensation to spectroscopic data.Improve spectroscopic data precision.
This acquisition method can be convenient the adjusting of spectrum average time and spectral intensity, according to flashing in a collection period
Formula light source triggering times are adjusted, and triggering times are more, and spectrum is stronger.
The average light source spectroscopic data of a flashing type light source is acquired, the average half-light for then acquiring a spectrometer composes number
According to, or after the average light source spectroscopic data of the multiple flashing type light source of acquisition, the average half-light modal data an of spectrometer is acquired,
The average half-light modal data that the average light source spectroscopic data of multiple flashing type light source subtracts the secondary spectrometer is repeatedly flashed
The spectroscopic data of formula light source.It is composed by dynamic acquisition half-light, improves the measurement accuracy of spectroscopic data.
Detailed description of the invention
Fig. 1 is schematic block circuit diagram of the invention；
Fig. 2 is the circuit diagram of single-chip microcontroller in hardware control module；
Fig. 3 is the circuit diagram of serial ports in hardware control module；
The flow chart of Fig. 4 acquisition method of the present invention；
Fig. 5 is that flashing type light source triggers primary time series chart in a light source light spectrum collection period；
Fig. 6 is the time series chart in multiple light sources spectra collection period；
Fig. 7 is that flashing type light source triggers multiple time series chart in a light source light spectrum collection period.
Specific embodiment
The present invention is further described with reference to the accompanying drawing.
Referring to a kind of spectra collection system of flashing type light source described in Fig. 1 to Fig. 7, including flashing type light source, spectrometer and
Controller, the flashing type light source use xenon lamp, and output end and the flashing type light source input terminal of the controller are electrically connected, described
The input of controller, output end are connected with the input of spectrometer, output end, and the controller is used to be dodged according to the input of setting
The average time of the triggering times of bright formula light source, the spectrometer time of integration and spectrum controls the same of flashing type light source and spectrometer
Step, and the effective light source light spectrum and half-light modal data information for obtaining spectrometer collection in real time.
The controller includes PC machine and hardware control module, the input of the output end and hardware control module of the PC machine
End is connected, and the hardware control module includes circuit board, power supply, single-chip microcontroller and serial ports, and the single-chip microcontroller and serial ports are mounted on electricity
On the plate of road, the serial ports includes light source triggering port, and spectrometer triggers port.Single-chip microcontroller is equipped with control program, single-chip microcontroller control
The corresponding triggering port of system.Intelligent control is carried out by the CPU of single-chip microcontroller, the CPU of single-chip microcontroller uses STM32 system, ST company
STM32F100 in column.MODBUS is used between PC machine and hardware trigger module as interface protocol, supports MODBUS-RTU
Standard carries out half-duplex transmission.Serial ports is connected by 16,17,20 feet of PA2, PA3, PA4 foot and single-chip microcontroller, and the serial ports is logical
1,2 feet for crossing the port XS2 are connect with PC machine.PC machine is connect by serial ports with hardware control module, the light on hardware control module
Source triggering port is electrically connected by electric wire with the triggering pin of flashing type light source, and the spectrometer on hardware control module triggers port
It is electrically connected by electric wire with the triggering pin of spectrometer.Corresponding triggering port is arranged by serial ports the height of level, voltage
Height (0V and 5V), such as level is drawn high 5V, level is pulled down to 0V again after 10 microseconds that are delayed, so that it may triggering flashing
Formula light source makes flashing type light source igniting.Spectrometer is similarly.The PC machine is used to be arranged the triggering time of input flashing type light source
The average time of number, the spectrometer time of integration and spectrum, and control command is sent to hardware control module, the hardware controls mould
Block parses received control command for receiving control command, controls corresponding triggering port according to parsing result
Carry out corresponding trigger action.Control software is equipped in PC machine, PC machine sends control command to hardware control module, hardware control
After molding block receives order, the port of triggering spectrometer is carried out to corresponding triggering port, spectrometer starts to acquire data, several
After a microsecond, the pin of xenon lamp is triggered, lights xenon lamp, PC machine reads spectrometer data.
A kind of spectra collection method of flashing type light source, the light including any flashing type light source of Claims 1-4
Acquisition system is composed, acquisition method is as follows:
Inputted in input interface in the controller the pulse-triggered number B of flashing type light source, the spectrometer time of integration and
The average time N of spectrum, the time of integration are traditionally arranged to be 5~10ms, and the controller parses the data information of input,
The pulse number of judgement triggering flashing type light source；
If the pulse-triggered number B of flashing type light source, B >=1, B≤10 are then the light source light of acquisition flashing type light source
Spectrum, the controller starts to count the time of integration of spectrometer first according to command triggers spectrometer, in 1~10 microsecond that is delayed
(US) after, generally delay 5us, controller triggers flashing type light source according to triggering times, makes flashing type light source igniting, when reaching light
Spectrometer stops data collection after the time of integration of spectrometer, and controller reads light source light spectrum data from spectrometer, completes one
The light source light spectrum collection period of flashing type light source is adjusted according to xenon lamp hair number is touched in a collection period, and triggering times are more,
Spectrum is stronger.The light source light spectrum collection period of each flashing type light source is T, and 150ms≤T≤250ms, the unit of cycle T is ms
(millisecond), according to the average time N of spectrum, average time N >=1 of the spectrum ,≤50, average times N uses 30 times,
Average time is more, and spectrum is more stable.Acquire the light source light spectrum data of N number of period flashing type light source, and by N number of period flashing type
Average light source spectroscopic data is obtained divided by N again after the light source light spectrum data addition of light source；
If the pulse-triggered number B=0 of flashing type light source, for the half-light spectrum for acquiring spectrometer, even if not light
When, spectrometer is also to have data, this data is exactly the half-light spectrum of spectrometer, is equivalent to ambient noise, the controller
Spectrometer is triggered, starts the time of integration for counting spectrometer, spectrometer stops acquisition number after the time of integration for reaching spectrometer
According to controller reads half-light modal data from spectrometer, the half-light spectrum collection period of a flashing type light source is completed, according to spectrum
Average time N, average time N >=1 of the spectrum ,≤50, average times N use 30 times, acquire N number of period half-light
Modal data, and, again divided by N, average half-light modal data will be obtained after the addition of the half-light modal data in N number of period；
Average half-light modal data, which is subtracted, by the average light source spectroscopic data of acquisition obtains the spectrum of each flashing type light source
Data.
The average light source spectroscopic data of a flashing type light source is acquired, the average half-light for then acquiring a spectrometer composes number
According to the average half-light modal data that the average light source spectroscopic data of the flashing type light source subtracts spectrometer obtains the secondary flashing type light
The spectroscopic data in source.
After the average light source spectroscopic data for acquiring multiple flashing type light source, the average half-light spectrum number an of spectrometer is acquired
According to the average half-light modal data that the average light source spectroscopic data of multiple flashing type light source subtracts the secondary spectrometer is repeatedly dodged
The spectroscopic data of bright formula light source.Therefore it can according to need in acquisition M times average light source spectroscopic data, then acquire a spectrometer
Average half-light modal data, M is 1~1000.
By the way of soft or hard combination, pass through the control software and hardware control module of PC machine, co- controlling xenon source
Synchronous with spectrometer, to obtain effective spectral information, the average time of self-setting spectrum as needed facilitates spectrum
The adjusting of average time and spectral intensity can dynamically acquire half-light spectrum, in real time effective removal half-light spectrum (ambient noise),
Be conducive to the compensation to spectroscopic data, improve spectroscopic data precision.
Referring to fig. 2 to shown in Fig. 7, by taking flashing type light source is using xenon lamp as an example, the control software of PC machine is main control unit, and
Flashing type light source, spectrometer and hardware control module are all controlled unit.PC machine is connect by serial ports with hardware control module, firmly
Xenon lamp triggering port in part control module is connected by the triggering pin of electric wire and xenon lamp, the spectrometer on hardware control module
Port is triggered to connect by the triggering pin of electric wire and spectrometer.The control software of PC machine sends commands to hardware control module,
Hardware control module parses the order received, is operated according to corresponding order to spectrometer and xenon flash lamp.
The time of integration (time for exposure) of spectrometer can be set according to the difference of setting parameter in PC machine control software simultaneously, spectrum
Average time, xenon flash lamp triggering times.Average time N and triggering times B can self-setting according to the needs of users.
In input interface in PC machine, when inputting the pulse-triggered number B >=1 of flashing type light source, hardware control module
Major function is triggered to xenon flash lamp, and xenon flash lamp is lighted.External trigger data acquisition life is sent to spectrometer simultaneously
It enables, spectrometer is allowed to start spectrum data gathering.Time series glazing spectrometer acquisition data trigger command will be prior to flashing type
The open command of light source, this is because the lighting time of flashing type light source is extremely short, if opened before spectrometer collection data
It opens, it is possible to which flashing type light source has been switched off, and spectrometer collection is less than spectral information.Hardware control module is first sent in the present invention
Spectra collection order then starts trigger pulse xenon lamp, lights pulse flicker formula light source, this reality after delay 1~10 microsecond (us)
It applies in example using 5us.Controller reads light source light spectrum data from spectrometer, completes the light source light spectrum acquisition week an of xenon lamp
Phase, the light source light spectrum collection period triggering for being traditionally arranged to be an xenon lamp is primary, i.e. pulse-triggered number B=1,
Referring to the time series chart of Fig. 5, time series chart is exactly the identical behaviour carried out each time in a cycle
Make, the sequence of each operation in time, according to this sequence, so that it may collect the spectroscopic data of xenon lamp.The T1 moment in figure
The order moment is received for hardware module, the T2 moment is spectrometer triggering moment, that is, starts to acquire the data moment, T3 is to light xenon lamp
Moment, T4 are that the moment is completed in data acquisition.The T2-T4 period is the acquisition data time of spectrometer, that is, the spectrometer product being arranged
Between timesharing, the T5 moment is the beginning of next acquisition circulation section.T1 to T5 is exactly a data collection cycle, and the time is about
200ms, other times do not have the specific time.The early several microseconds of T2 ratio T3.
According to the average time N of spectrum, average time N >=1 of the spectrum ,≤50, N 30 acquires 30 period xenons
The light source light spectrum data of lamp, and, again divided by 30, an xenon lamp will be obtained after the addition of the light source light spectrum data of this 30 period xenon lamps
Average light source spectroscopic data.
An xenon lamp can be only triggered in one data collection cycle and (lights an xenon according to field application environment
Lamp), can also be multiple in a data collection cycle internal trigger, triggering is primary, and light intensity is just weaker, and repeatedly, light intensity is just for triggering
It is strong very much.Because all there is relaxation phenomenon in any light source, when a spectral information of xenon lamp is weaker is not enough to participate in operation,
The pulse-triggered number for needing to adjust flashing type light source repeatedly triggers xenon lamp within the data acquisition period of spectrometer, joins
Timing diagram as shown in Figure 7.
In input interface in PC machine, the pulse-triggered number B=0 of flashing type light source, hardware control module pair are inputted
Received order is judged that the pulse-triggered number B=0 of flashing type light source was received is acquisition half-light spectrum order, only
Need to trigger spectrometer collection data, without triggering xenon source.Then according to average time N, the spectrum is averaged
Times N >=1 ,≤50, N 30 acquire 30 period half-light modal datas, and 30 period half-light modal datas are obtained divided by 30
Average half-light modal data；
Average half-light modal data, which is subtracted, according to the average light source spectroscopic data of acquisition obtains the spectroscopic data of each xenon lamp.
It can choose xenon lamp spectrum of acquisition, then acquire a half-light spectrum again.This mode can reduce computation rate.
And the acquisition primary time is very short, is all ms, if the half-light spectrum of spectra collection one time of acquisition one time is not necessarily to, because secretly
Spectrum was changed every a period of time, acquire multiple xenon lamp spectrum acquire half-light spectrum again can be much better.
In actual application, half-light spectrum will not change a lot in a short time, but spectrometer with
The increase of time service, half-light spectrum (ambient noise) can change, can be dynamic in order to improve the measurement accuracy of spectrum
The half-light spectrum of spectrometer is acquired, i.e., acquires a half-light spectrum every a period of time.It can choose selection acquisition xenon lamp spectrum several times,
A half-light spectrum is acquired again, and calculating speed can be improved in this way.Timing diagram is acquired as shown in fig. 6, acquiring M xenon lamp spectrum in figure
Afterwards, a half-light spectrum is acquired, M, which can according to need, voluntarily to be selected.
Claims (9)
1. a kind of spectra collection system of flashing type light source, including flashing type light source, spectrometer, it is characterised in that: further include control
Device processed, output end and the flashing type light source input terminal of the controller are electrically connected, the input terminal of the controller and spectrometer
Output end is connected, and the output end of controller is connected with the input terminal of spectrometer, and the controller is used to be dodged according to the input of setting
The average time of the triggering times of bright formula light source, the spectrometer time of integration and spectrum controls the same of flashing type light source and spectrometer
Step, and the effective light source light spectrum and half-light modal data information for obtaining spectrometer collection in real time；The specific method is as follows:
The average time N of the pulse-triggered number B of input flashing type light source, the spectrometer time of integration and spectrum in the controller,
The controller parses the data information of input, judges the pulse number for triggering flashing type light source；
If pulse-triggered number B≤1 of flashing type light source, for the light source light spectrum for acquiring flashing type light source, the controller
First according to command triggers spectrometer, and start count spectrometer the time of integration, after 1~10 microsecond that is delayed, controller according to
Triggering times trigger flashing type light source, make flashing type light source igniting, and spectrometer stopping is adopted after reaching the time of integration of spectrometer
Collecting data, controller reads light source light spectrum data from spectrometer, completes the light source light spectrum collection period of a flashing type light source,
According to the average time N of spectrum, the light source light spectrum data of N number of period flashing type light source are acquired, and by N number of period flashing type light source
Light source light spectrum data divided by N, obtain average light source spectroscopic data；
If the pulse-triggered number B=0 of flashing type light source, for the half-light spectrum for acquiring spectrometer, the controller triggers light
Spectrometer starts the time of integration for counting spectrometer, and spectrometer stops data collection after the time of integration for reaching spectrometer, controls
Device reads half-light modal data from spectrometer, the half-light spectrum collection period an of spectrometer is completed, according to the average time of spectrum
N acquires N number of period half-light modal data, and the half-light modal data in N number of period is obtained average half-light modal data divided by N；
Triggering times B≤10 of the flashing type light source of the light source light spectrum collection period of one flashing type light source；
Average half-light modal data, which is subtracted, by the average light source spectroscopic data of acquisition obtains the spectroscopic data of each flashing type light source；
Dynamically acquire the half-light spectrum of spectrometer.
2. a kind of spectra collection system of flashing type light source according to claim 1, it is characterised in that: the controller packet
PC machine and hardware control module are included, the output end of the PC machine is connected with the input terminal of hardware control module, hardware control module
On light source triggering port be electrically connected with the triggering pin of flashing type light source, spectrometer on hardware control module trigger port and
The triggering pin of spectrometer is electrically connected, when the PC machine is used to be arranged the triggering times of input flashing type light source, spectrometer integral
Between and spectrum average time, and send control command to hardware control module, the hardware control module is for receiving control
Order, and received control command is parsed, corresponding triggering port is controlled according to parsing result and is triggered accordingly
Operation.
3. a kind of spectra collection system of flashing type light source according to claim 1, it is characterised in that: the hardware controls
Module includes circuit board, single-chip microcontroller and serial ports, and the single-chip microcontroller and serial port setting are on circuit boards.
4. a kind of spectra collection system of flashing type light source according to claim 1, it is characterised in that: the flashing type light
Source uses xenon lamp.
5. a kind of spectra collection method of flashing type light source, it is characterised in that: including any flashing of Claims 1-4
The spectra collection system of formula light source, acquisition method are as follows:
The average time N of the pulse-triggered number B of input flashing type light source, the spectrometer time of integration and spectrum in the controller,
The controller parses the data information of input, judges the pulse number for triggering flashing type light source；
If pulse-triggered number B≤1 of flashing type light source, for the light source light spectrum for acquiring flashing type light source, the controller
First according to command triggers spectrometer, and start count spectrometer the time of integration, after 1~10 microsecond that is delayed, controller according to
Triggering times trigger flashing type light source, make flashing type light source igniting, and spectrometer stopping is adopted after reaching the time of integration of spectrometer
Collecting data, controller reads light source light spectrum data from spectrometer, completes the light source light spectrum collection period of a flashing type light source,
According to the average time N of spectrum, the light source light spectrum data of N number of period flashing type light source are acquired, and by N number of period flashing type light source
Light source light spectrum data divided by N, obtain average light source spectroscopic data；
If the pulse-triggered number B=0 of flashing type light source, for the half-light spectrum for acquiring spectrometer, the controller triggers light
Spectrometer starts the time of integration for counting spectrometer, and spectrometer stops data collection after the time of integration for reaching spectrometer, controls
Device reads half-light modal data from spectrometer, the half-light spectrum collection period an of spectrometer is completed, according to the average time of spectrum
N acquires N number of period half-light modal data, and the half-light modal data in N number of period is obtained average half-light modal data divided by N；
Triggering times B≤10 of the flashing type light source of the light source light spectrum collection period of one flashing type light source；
Average half-light modal data, which is subtracted, by the average light source spectroscopic data of acquisition obtains the spectroscopic data of each flashing type light source；
Dynamically acquire the half-light spectrum of spectrometer.
6. a kind of spectra collection method of flashing type light source according to claim 5, it is characterised in that: flashing type of acquisition
The average light source spectroscopic data of light source, then acquires the average half-light modal data of a spectrometer, and the flashing type light source is put down
The average half-light modal data that equal light source light spectrum data subtract spectrometer obtains the spectroscopic data of the secondary flashing type light source.
7. a kind of spectra collection method of flashing type light source according to claim 5, it is characterised in that: acquire multiple flashing type
After the average light source spectroscopic data of light source, the average half-light modal data an of spectrometer is acquired, multiple flashing type light source is averaged
The average half-light modal data that light source light spectrum data subtract the secondary spectrometer obtains the spectroscopic data of multiple flashing type light source.
8. a kind of spectra collection method of flashing type light source according to claim 5, it is characterised in that: each flashing type
The light source light spectrum collection period of light source is T, 150ms≤T≤250ms.
9. a kind of spectra collection method of flashing type light source according to claim 5, it is characterised in that: the spectrum is averaged
Number N≤1, N≤50.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390701A (en) * | 2014-10-31 | 2015-03-04 | 上海光谱仪器有限公司 | Pulse xenon lamp-CCD small spectrometer system and light source external synchronization method |
| CN104501954A (en) * | 2014-12-10 | 2015-04-08 | 四川大学 | Spectral characteristic tester based on synchronous pulse measurement technique |
| CN205537960U (en) * | 2016-03-17 | 2016-08-31 | 重庆川仪自动化股份有限公司 | Spectrum collection system of scintillation formula light source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390701A (en) * | 2014-10-31 | 2015-03-04 | 上海光谱仪器有限公司 | Pulse xenon lamp-CCD small spectrometer system and light source external synchronization method |
| CN104501954A (en) * | 2014-12-10 | 2015-04-08 | 四川大学 | Spectral characteristic tester based on synchronous pulse measurement technique |
| CN205537960U (en) * | 2016-03-17 | 2016-08-31 | 重庆川仪自动化股份有限公司 | Spectrum collection system of scintillation formula light source |
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