CN205537960U - Spectrum collection system of scintillation formula light source - Google Patents
Spectrum collection system of scintillation formula light source Download PDFInfo
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- CN205537960U CN205537960U CN201620207551.XU CN201620207551U CN205537960U CN 205537960 U CN205537960 U CN 205537960U CN 201620207551 U CN201620207551 U CN 201620207551U CN 205537960 U CN205537960 U CN 205537960U
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Abstract
The utility model discloses a spectrum collection system of scintillation formula light source, including scintillation formula light source, spectrum appearance, controller, the output of controller links with scintillation formula light source input ferroelectric phase, and input, the output of controller link to each other with input, the output of spectrum appearance, the controller is used for the synchronization of the average time that triggers number of times, spectrum appearance integration time and spectrum according to the input scintillation formula light source that sets up, control scintillation formula light source and spectrum appearance to the real -time effectual source spectrum and dark spectral data information who acquires the spectrum appearance and gather. The utility model discloses make scintillation formula light source and the collaborative work of spectrum appearance data, put forward the hyperspectral data precision.
Description
Technical field
This utility model relates to field of optical detection, is specifically related to the spectrum of a kind of flashing type light source
Acquisition system.
Background technology
Just sent by light source, currently mainly use spectrum analysis light source, in spectrum analysis
Important components and parts are exactly spectrogrph and lamp source.Spectrogrph is a kind of important optical measuring instrument
Device, by the analysis to characteristic spectral line, carries out qualitative to the composition of material and determines quantitative analysis.
The another one important devices of spectrum analysis is exactly light source, and light source stable performance is by spectrum and divides
The basic demand of analysis.The light source of spectrum has a variety of, xenon lamp, deuterium lamp, mercury lamp etc..Therefore light
Source can be divided into continuous light source and flashing type light source, and continuous light source (such as deuterium lamp light source), due to light
The seriality in source, spectrogrph can collect spectral information at any time.But for dodging
Bright formula 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 is not easy to catch, so must gather in the moment of light source igniting
The spectral information of light source, to guarantee that collecting light source can use simultaneously, and the intensity of light source can not ether
Weak also can not ether strong, light source is the most weak, and system noise increases, it is impossible to obtain in spectrum take completely
The useful information of band；Light intensity likely exceedes too by force the maximum range of spectrogrph, and essence is measured in impact
Degree and result.Can not realize at present flashing type light source and with spectrogrph collaborative work so that measure
Performance, data are the poorest.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of flashing type
The spectra collection system of light source, makes flashing type light source and the work of spectrogrph data collaborative, so that
The spectroscopic data obtained is relatively reliable useful.
The purpose of this utility model can realize by the following technical solutions:
A kind of spectra collection system of flashing type light source, including flashing type light source, spectrogrph, its
It is characterised by: also include controller, the outfan of described controller and flashing type light source input
Being electrically connected, the input of described controller, outfan are connected with input, the outfan of spectrogrph,
Described controller is for according to the input triggering times of flashing type light source, the spectrogrph integration arranged
Time and the average time of spectrum, control flashing type light source and the synchronization of spectrogrph, and have in real time
The light source light spectrum obtaining spectrometer collection of effect and half-light modal data information.
Described controller includes PC and hardware control module, and the outfan of described PC is with hard
The input of part control module is connected, and the light source on hardware control module triggers port and flashing type
The triggering pin electrical connection of light source, the spectrogrph on hardware control module triggers port and spectrogrph
Triggering pin electrical connection, described PC for arrange input flashing type light source triggering times,
The spectrogrph time of integration and the average time of spectrum, and transmitting control commands is to hardware controls mould
Block, described hardware control module is used for receiving control command, and carries out the control command received
Resolve, control the corresponding port that triggers according to analysis result and carry out corresponding trigger action.
Described hardware control module includes circuit board, single-chip microcomputer and serial ports, described single-chip microcomputer and string
Mouth is arranged on circuit boards.
The CPU of described single-chip microcomputer uses STM32F100.
Described flashing type light source uses xenon lamp.
The beneficial effects of the utility model: this utility model include flashing type light source, spectrogrph,
Controller, the outfan of described controller is electrically connected with flashing type light source input, described control
The input of device, outfan are connected with input, the outfan of spectrogrph, and described controller is used for root
The average of the triggering times of flashing type light source, the spectrogrph time of integration and spectrum is inputted according to arrange
Number of times, controls flashing type light source and the synchronization of spectrogrph, and the most effective spectrogrph that obtains is adopted
The light source light spectrum of collection and half-light modal data information.Spectrogrph and flashing type light is controlled by controller
The synchronization in source, can the most effectively obtain spectral information, arrange spectrum the most voluntarily
Average time, by the intensity of software control and regulation spectrum, can gather half-light spectrum dynamically,
Improve the certainty of measurement of spectroscopic data.Average time is the most, and spectrum is the most stable.
PC is connected with hardware control module by serial ports, and the light source on hardware control module triggers
Port is electrically connected with the triggering pin of flashing type light source by electric wire, the light on hardware control module
Spectrometer is triggered port and is electrically connected with the triggering pin of spectrogrph by electric wire, and PC sends and controls
Order is to hardware control module, after hardware control module receives order, to triggering end accordingly
Mouth carries out triggering the port of spectrogrph, and spectrogrph first starts to gather data, after several microseconds, touches
Send out the triggering pin of flashing type light source, light flashing type light source.PC reads spectrogrph data.
Use PC software and hardware circuit co-controlling spectrogrph and the synchronization of flashing type light source.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model；
Fig. 2 is the circuit diagram of single-chip microcomputer in hardware control module；
Fig. 3 is the circuit diagram of serial ports in hardware control module；
The flow chart of Fig. 4 this utility model acquisition method；
Fig. 5 is the time sequence that in a light source light spectrum collection period, flashing type light source triggers once
Row figure；
Fig. 6 is the time series chart of multiple light source light spectrum collection period；
Fig. 7 is the time sequence that in a light source light spectrum collection period, flashing type light source triggers repeatedly
Row figure.
Detailed description of the invention
The utility model is further described below in conjunction with the accompanying drawings.
See the spectra collection system of a kind of flashing type light source described in Fig. 1 to Fig. 7, including flicker
Formula light source, spectrogrph and controller, described flashing type light source uses xenon lamp, described controller
Outfan is electrically connected with flashing type light source input, the input of described controller, outfan and light
The input of spectrometer, outfan are connected, and described controller is for according to the input flashing type light arranged
The triggering times in source, the spectrogrph time of integration and the average time of spectrum, control flashing type light source
With the synchronization of spectrogrph, and the in real time effective light source light spectrum obtaining spectrometer collection and half-light spectrum
Data message.
Described controller includes PC and hardware control module, and the outfan of described PC is with hard
The input of part control module is connected, and described hardware control module includes circuit board, power supply, list
Sheet machine and serial ports, described single-chip microcomputer and serial ports are installed on circuit boards, and described serial ports includes light source
Triggering port, spectrogrph triggers port.Single-chip microcomputer is provided with control program, Single-chip Controlling phase
The triggering port answered.Carrying out Based Intelligent Control by the CPU of single-chip microcomputer, the CPU of single-chip microcomputer adopts
With the STM32F100 in ST company STM32 series.Between PC and hardware trigger module
Have employed MODBUS as interface protocol, support MODBUS-RTU standard, carry out half-duplex biography
Send.Serial ports is connected with 16,17,20 feet of single-chip microcomputer by PA2, PA3, PA4 foot, institute
State serial ports by the 1 of XS2 port, 2 feet are connected with PC.PC passes through serial ports and hardware
Control module connects, and the light source on hardware control module triggers port by electric wire and flashing type light
The triggering pin electrical connection in source, spectrogrph on hardware control module trigger port by electric wire with
The triggering pin electrical connection of spectrogrph.By serial ports, the corresponding port that triggers is arranged the height of level
Low, the height (0V and 5V) of voltage, such as level is drawn high 5V, after time delay 10 microsecond
Again level is pulled down to 0V, it is possible to trigger flashing type light source, make flashing type light source igniting.
Spectrogrph is in like manner.Described PC is for arranging the input triggering times of flashing type light source, spectrum
The instrument time of integration and the average time of spectrum, and transmitting control commands is to hardware control module, institute
State hardware control module for receiving control command, and the control command received resolved,
Control the corresponding port that triggers according to analysis result and carry out corresponding trigger action.PC sets
Control software, PC transmitting control commands is had to connect to hardware control module, hardware control module
After receiving order, carrying out triggering the port of spectrogrph to the corresponding port that triggers, spectrogrph starts
Gathering data, after several microseconds, trigger the pin of xenon lamp, light xenon lamp, PC reads light
Spectrometer data.
A kind of spectra collection method of flashing type light source, arbitrary described including Claims 1-4
The spectra collection system of flashing type light source, acquisition method is as follows:
Inputting interface in the controller inputs the pulse-triggered number of times B of flashing type light source, light
The average time N of the spectrometer time of integration and spectrum, is traditionally arranged to be 5～10ms the time of integration,
The data message of input is resolved by described controller, it is judged that trigger the pulse of flashing type light source
Number of times；
If the pulse-triggered number of times B of flashing type light source, B >=1, B≤10, then dodge for gathering
The light source light spectrum of bright formula light source, described controller is first according to command triggers spectrogrph, and starts system
The time of integration of photometric spectrometer, after time delay 1～10 microsecond (US), general time delay 5us,
Controller triggers flashing type light source according to triggering times, makes flashing type light source igniting, when reaching light
After the time of integration of spectrometer, spectrogrph stops data collection, and controller reads light source from spectrogrph
Spectroscopic data, completes the light source light spectrum collection period of a flashing type light source, according to a collection
Touching xenon lamp in cycle and send out number of times regulation, triggering times is the most, and spectrum is the strongest.Each flashing type light
The light source light spectrum collection period in source is T, 150ms≤T≤250ms, and the unit of cycle T is ms
(millisecond), according to the average time N of spectrum, average time N >=1 of described spectrum ,≤50,
Average times N uses 30 times, and average time is the most, and spectrum is the most stable.Gather N number of
The light source light spectrum data of cycle flashing type light source, and by the light source light of N number of cycle flashing type light source
Again divided by N after modal data addition, it is thus achieved that average light source spectroscopic data；
If the pulse-triggered number of times B=0 of flashing type light source, then for gathering the half-light of spectrogrph
Spectrum, even if do not have light, spectrogrph also has data, and these data are exactly spectrogrph
Half-light spectrum, be equivalent to background noise, described controller triggers spectrogrph, starts to add up spectrum
The time of integration of instrument, after the time of integration reaching spectrogrph, spectrogrph stops data collection, control
Device processed reads half-light modal data from spectrogrph, completes the dark spectra collection of a flashing type light source
Cycle, according to the average time N of spectrum, average time N >=1 of described spectrum ,≤50,
Average times N uses 30 times, gathers N number of cycle half-light modal data, and by N number of week
Again divided by N after the half-light modal data addition of phase, it is thus achieved that average half-light modal data；
Deduct average half-light modal data by the average light source spectroscopic data gathered to be dodged every time
The spectroscopic data of bright formula light source.
Gather the average light source spectroscopic data of a flashing type light source, then gather a spectrogrph
Average half-light modal data, the average light source spectroscopic data of described flashing type light source deducts spectrogrph
Average half-light modal data obtain the spectroscopic data of this flashing type light source.
After gathering repeatedly the average light source spectroscopic data of flashing type light source, gather a spectrogrph
Average half-light modal data, repeatedly the average light source spectroscopic data of flashing type light source all deducts this light
The average half-light modal data of spectrometer obtains the spectroscopic data of repeatedly flashing type light source.Therefore can root
Gather M average light source spectroscopic data according to needs, then gather the average dark of a spectrogrph
Spectroscopic data, M is 1～1000.
Use the mode that soft or hard combines, by control software and the hardware control module of PC, altogether
With controlling xenon source and the synchronization of spectrogrph, in order to obtain effective spectral information, according to need
The average time of spectrum is set voluntarily, facilitates the regulation of spectrum average time and spectral intensity,
Can gather half-light spectrum dynamically, the most effective half-light of removing composes (background noise), favorably
In the compensation to spectroscopic data, improve spectroscopic data precision.
See shown in Fig. 2 to Fig. 7, use as a example by xenon lamp by flashing type light source, the control of PC
Software processed is main control unit, and flashing type light source, spectrogrph and hardware control module are all controlled
Unit.PC is connected with hardware control module by serial ports, the xenon lamp on hardware control module
Trigger port to be connected with the triggering pin of xenon lamp by electric wire, the spectrogrph on hardware control module
Trigger port to be connected with the triggering pin of spectrogrph by electric wire.The control software of PC sends
Order is to hardware control module, and the order received is resolved by hardware control module, according to
Spectrogrph and xenon flash lamp are operated by corresponding order.Simultaneously PC control software according to
The difference of parameter is set, the time of integration (time of exposure) of spectrogrph can be set, spectrum
Average time, xenon flash lamp triggering times.Average time N and triggering times B can bases
The needing of user is arranged voluntarily.
When, in the inputting interface of PC, inputting pulse-triggered number of times B >=1 of flashing type light source
Time, hardware control module major function is to trigger xenon flash lamp, lights xenon flash lamp.
Spectrogrph is sent external trigger data acquisition command simultaneously, allow spectrogrph start spectroscopic data and adopt
Collection.The trigger command gathering data at time series glazing spectrometer will opening prior to flashing type light source
Open order, this is because the lighting time of flashing type light source is extremely short, if at spectrometer collection number
According to front opening, it is possible to flashing type light source has been switched off, spectrometer collection is believed less than spectrum
Breath.In this utility model, hardware control module first sends spectra collection order, and time delay 1～10 is micro-
After second (us), then start to trigger xenon flash lamp, light pulse flicker formula light source, this enforcement
Example uses 5us.Controller reads light source light spectrum data from spectrogrph, completes an xenon lamp
Light source light spectrum collection period, be traditionally arranged to be an xenon lamp light source light spectrum collection period trigger
Once, i.e. pulse-triggered number of times B=1,
Seeing the time series chart of Fig. 5, time series chart is exactly each time in the cycle
The same operation carried out, each operation order in time, according to this order, so that it may
To collect the spectroscopic data of xenon lamp.In figure, the T1 moment is that hardware module receives the order moment,
The T2 moment is that spectrogrph triggers the moment, i.e. starts to gather the data moment, when T3 is for lighting xenon lamp
Carving, T4 is that data acquisition completes the moment.When the T2-T4 time period is the collection data of spectrogrph
Between, the spectrogrph time of integration i.e. arranged, the T5 moment is the next beginning gathering circulation section.
T1 to T5 is exactly a data collection cycle, and the time is about 200ms, other times point
There is no the clear and definite time.T2 wants Zao several microseconds than T3.
Average time N according to spectrum, average time N >=1 of described spectrum ,≤50, N
It is 30, gathers the light source light spectrum data of 30 cycle xenon lamps, and by these 30 cycle xenon lamps
Again divided by 30 after the addition of light source light spectrum data, it is thus achieved that the average light source spectroscopic data of an xenon lamp.
Come according to on-the-spot applied environment, in a data collection cycle, can only trigger an xenon lamp
(lighting an xenon lamp), it is also possible to a data collection cycle internal trigger repeatedly, triggers one
Secondary, light intensity is the most weak, triggers repeatedly, and light intensity is the strongest a lot.Because any light source is all deposited
At relaxation phenomenon, when a spectral information of xenon lamp is more weak be not enough to participate in computing time, need to adjust
The pulse-triggered number of times of whole flashing type light source, within a data acquisition period of spectrogrph repeatedly
Trigger xenon lamp, sequential chart shown in Figure 7.
When, in the inputting interface of PC, inputting the pulse-triggered number of times B=0 of flashing type light source,
The order received is judged by hardware control module, the pulse-triggered number of times B of flashing type light source
=0 i.e. receive be gather half-light spectrum order, it is only necessary to trigger spectrometer collection data, and
Need not trigger xenon source.Then according to average time N, the average time N of described spectrum
>=1 ,≤50, N are 30, gather 30 cycle half-light modal data, and by 30 cycle half-lights
Modal data is divided by 30, it is thus achieved that average half-light modal data；
Deduct average half-light modal data according to the average light source spectroscopic data gathered and obtain each xenon
The spectroscopic data of lamp.
Can select to gather an xenon lamp spectrum, gather a half-light spectrum the most again.This mode
Computation rate can be reduced.And it is the shortest to gather the time once, is all ms, if gathered once
Half-light of spectra collection spectrum it is not necessary that because half-light spectrum is to change every a period of time,
Gather repeatedly xenon lamp spectrum gather a half-light spectrum again can be better.
In actual application, half-light spectrum will not change a lot at short notice,
But the increase that spectrogrph works over time, its half-light spectrum (background noise) can change,
In order to improve the certainty of measurement of spectrum, the half-light spectrum of spectrogrph can be gathered dynamically, i.e. every one
The section time gathers a half-light spectrum.Selection can gather xenon lamp spectrum several times, then gather
Half-light spectrum, so can improve calculating speed.Gather sequential chart as shown in Figure 6.In figure
After gathering M xenon lamp spectrum, gathering a half-light spectrum, M can select the most voluntarily.
Claims (5)
1. a spectra collection system for flashing type light source, including flashing type light source, spectrogrph,
It is characterized in that: also include that controller, the outfan of described controller input with flashing type light source
End is electrically connected, and the input of described controller, outfan are connected with input, the outfan of spectrogrph,
Described controller is for according to the input triggering times of flashing type light source, the spectrogrph integration arranged
Time and the average time of spectrum, control flashing type light source and the synchronization of spectrogrph, and have in real time
The light source light spectrum obtaining spectrometer collection of effect and half-light modal data information.
The spectra collection system of a kind of flashing type light source the most according to claim 1, it is special
Levy and be: described controller includes PC and hardware control module, the outfan of described PC
Being connected with the input of hardware control module, the light source on hardware control module triggers port and sudden strain of a muscle
The triggering pin electrical connection of bright formula light source, the spectrogrph on hardware control module triggers port and light
The triggering pin electrical connection of spectrometer, described PC is for arranging the triggering of input flashing type light source
Number of times, the spectrogrph time of integration and the average time of spectrum, and transmitting control commands is to hardware control
Molding block, described hardware control module is used for receiving control command, and to the control command received
Resolve, control the corresponding port that triggers according to analysis result and carry out corresponding trigger action.
The spectra collection system of a kind of flashing type light source the most according to claim 2, it is special
Levy and be: described hardware control module includes circuit board, single-chip microcomputer and serial ports, described single-chip microcomputer
With serial port setting on circuit boards.
The spectra collection system of a kind of flashing type light source the most according to claim 3, it is special
Levy and be: the CPU of described single-chip microcomputer uses STM32F100.
The spectra collection system of a kind of flashing type light source the most according to claim 1, it is special
Levy and be: described flashing type light source uses xenon lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620207551.XU CN205537960U (en) | 2016-03-17 | 2016-03-17 | Spectrum collection system of scintillation formula light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620207551.XU CN205537960U (en) | 2016-03-17 | 2016-03-17 | Spectrum collection system of scintillation formula light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698932A (en) * | 2016-03-17 | 2016-06-22 | 重庆川仪自动化股份有限公司 | Spectrum acquisition system and spectrum acquisition method for scintillation light source |
-
2016
- 2016-03-17 CN CN201620207551.XU patent/CN205537960U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698932A (en) * | 2016-03-17 | 2016-06-22 | 重庆川仪自动化股份有限公司 | Spectrum acquisition system and spectrum acquisition method for scintillation light source |
| CN105698932B (en) * | 2016-03-17 | 2019-07-19 | 重庆川仪自动化股份有限公司 | The spectra collection system and spectra collection method of flashing type light source |
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