CN107941341A - A kind of infrared spectra measuring system - Google Patents
A kind of infrared spectra measuring system Download PDFInfo
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- CN107941341A CN107941341A CN201810031084.3A CN201810031084A CN107941341A CN 107941341 A CN107941341 A CN 107941341A CN 201810031084 A CN201810031084 A CN 201810031084A CN 107941341 A CN107941341 A CN 107941341A
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- measuring system
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- 238000002329 infrared spectrum Methods 0.000 title claims abstract description 26
- 238000007405 data analysis Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000001228 spectrum Methods 0.000 claims description 22
- 230000003595 spectral effect Effects 0.000 claims description 17
- 238000010183 spectrum analysis Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 230000006870 function Effects 0.000 description 5
- 238000004566 IR spectroscopy Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 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
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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
- G01J3/02—Details
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
Abstract
The invention discloses a kind of infrared spectra measuring system, including data acquisition circuit module, Data Analysis Services module, power module, ARM control chips, time-sequence control module, USB data transmission module, A/D modular converters；ARM control chips realize two-way communication link with USB data transmission module, ARM control chips realize two-way communication link with A/D modular converters, the output terminal of ARM control chips and the input terminal of time-sequence control module communicate to connect, power module is data acquisition circuit module for power supply, the output terminal of time-sequence control module is communicated to connect with the input terminal of data acquisition circuit module, power module is Data Analysis Services modules with power, the output terminal of data acquisition circuit module is communicated to connect with the input terminal of Data Analysis Services module, the output terminal of Data Analysis Services module is communicated to connect with the input terminal of A/D modular converters；And Data Analysis Services module is connected with interference pattern display screen, Data Analysis Services module is connected with spectrogram display screen.
Description
Technical field
The present invention relates to infrared spectrum technology field, more particularly to a kind of infrared spectra measuring system.
Background technology
Infrared spectrometry is the absorption characteristic to the infra-red radiation of different wave length using material, carries out molecular structure and change
The system for learning composition analysis.Infrared spectra measuring system is usually by light source, monochromator, detector and computer treatmenting information system
Composition.According to the difference of light-dividing device, it is divided into color dispersion-type and interference-type.Infrared spectroscopy is balanced to color dispersion-type double light path optical null
For photometer, after sample absorbs the infra-red radiation of certain frequency, transition, the light beam of transmission occur for the vibration level of molecule
The light of middle corresponding frequencies is weakened, and causes the reference light paths intensity difference radiated corresponding to sample arm, so as to obtain institute's sample
Infrared spectrum.
At present, when with Infrared irradiation organic matter, vibration level transition, different changes occur for the infrared radiance of molecule absorption
Learn key or functional group absorption frequency is different, each organic molecule only absorbs consistent with its molecular vibration, rotational frequency red
External spectrum, obtained absorption spectrum are commonly referred to as infrared absorption spectroscopy, and infrared spectrum is analyzed, and material can be determined
Amount analysis.For current infrared spectra measuring system when using process, power consumption is higher, while interference pattern and spectrogram are carried out directly
See ground display.
It is a kind of based on the infrared of gradual filter according to disclosed in Chinese invention patent application number is 201610322176.8
Imaging spectral measurement system, which solves the spectral resolution energy force difference of existing imaging spectrum system, there are larger spectral line is curved
Bent and spectral line chromatic variation of distortion, design, processing, the deficiencies of adjustment required precision is high, price is high, but infrared spectrometry list therein
Member in gatherer process is measured, photoelectric sensor can not be effectively utilized material frequency signal is caught, at the same can not and
When be effectively transmitted in PC machine, which results in using infrared spectrum measurement when produce hysteresis quality, while spectral manipulation
Functions of modules is more single, and the processing such as smooth, filtering can not be carried out to the signal of reading.
The content of the invention
The present invention is in order to overcome deficiency of the prior art, there is provided a kind of infrared spectra measuring system.
The present invention is to be achieved through the following technical solutions：
A kind of infrared spectra measuring system, including data acquisition circuit module, Data Analysis Services module, power module,
ARM control chips, time-sequence control module, USB data transmission module, A/D modular converters；The power module is controlled for the ARM
Chip power supply processed, the ARM control chips realize two-way communication link with the USB data transmission module, and the ARM controls core
Piece realizes two-way communication link, output terminal and the time-sequence control module of the ARM control chips with the A/D modular converters
Input terminal communication connection, the power module is the data acquisition circuit module for power supply, the time-sequence control module it is defeated
The input terminal of outlet and the data acquisition circuit module communicates to connect, and the power module is the Data Analysis Services module
Electric power is provided, the output terminal of the data acquisition circuit module and the input terminal of the Data Analysis Services module communicate to connect,
The output terminal of the Data Analysis Services module and the input terminal of the A/D modular converters communicate to connect；And the data analysis
Processing module is connected with interference pattern display screen, and the Data Analysis Services module is connected with spectrogram display screen.
Further, the data acquisition circuit module includes photodetector, chip, signal processor, USB module.
Further, the Data Analysis Services module includes spectra collection module, spectral manipulation module, spectrum analysis mould
Block, data report module, Wavelength calibration module, spectrum contrast module.
Further, the output terminal of the spectra collection module and the input terminal of the spectral manipulation module communicate to connect,
The output terminal of the spectral manipulation module is communicated to connect with the input terminal of the spectral analysis module, the spectral analysis module
Output terminal and the input terminal of the data report module communicate to connect, the output terminal of the data report module and the wavelength mark
The input terminal communication connection of cover half block, the output terminal of the Wavelength calibration module communicate with the input terminal of the spectrum contrast module
Connection.
Further, the model LPC2148 that the chip uses.
Further, the model AD9826 of the signal processor.
Further, the photodetector is using line scan image sensor G9203-256D.
Further, the power module is DC power supplier.
Compared with prior art, the beneficial effects of the invention are as follows：In the use of the present invention, infrared spectra measuring system
Data acquisition circuit module is accomplished that data acquisition function, due to whole infrared spectra measuring system require circuit it is small,
It is low in energy consumption, caloric value is small, scalability is strong, so the present invention using the low consumption circuit system based on ARM7.Use
Main chip has the ARM7 chips LPC2148 and signal processor AD9826 that PHILIP companies produce, what photodetector used
It is line scan image sensor G9203-256D.Clock signal is provided to photodetector first, then to being changed by AD9826
Line scan image sensor analog signal after processing is acquired, then the data collected are temporarily stored on its USB buffering area, most
Afterwards by the USB module that it is internally integrated by these data sendings to PC machine.
Data Analysis Services module is the core in system software.Two kinds of calculations of PCR and PLS are integrated with the module
Method.Software in PC machine mainly includes Data acquisition and issuance two large divisions, and general frame is to surround database module, by system
It is divided into six functions module.Spectra collection module is that the spectral signal of hardware is read into PC machine by usb protocol；At spectrum
Reason module is to carry out the basic handlings such as smooth, filtering to the signal of reading；Spectral analysis module, spectra collection module, spectrum pair
It is several basic accessory modules than module, Wavelength calibration module and data report module.The base that software data gathers in PC machine
This flow is：When user requires to gather, the characterization time of integration and AD9826 biased electricals are sent to LPC2148 by USB first
The data of pressure, are then read the data sent from LPC2148 by USB again, are finally painted using these data in coordinate diagram
Go out corresponding curve and complete data acquisition.
Infrared spectra measuring system provided by the invention is easy to which the interference pattern measured and spectrogram are shown, each thing
The content of matter also will reflect on infrared absorpting light spectra, can carry out quantitative and qualitative analysis according to peak position, absorption intensity.
Brief description of the drawings
Fig. 1 is the principle of the present invention figure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, a kind of infrared spectra measuring system, including at data acquisition circuit module, data analysis
Manage module, power module, ARM control chips, time-sequence control module, USB data transmission module, A/D modular converters；The power supply
Module is powered for the ARM control chips, and the ARM control chips realize that two-way communication connects with the USB data transmission module
Connect, the ARM control chips and the A/D modular converters realize two-way communication link, the output terminal of the ARM control chips with
The input terminal communication connection of the time-sequence control module, the power module is the data acquisition circuit module for power supply, described
The output terminal of time-sequence control module and the input terminal of the data acquisition circuit module communicate to connect, and the power module is described
Data Analysis Services modules with power, the output terminal of the data acquisition circuit module and the Data Analysis Services module
Input terminal communicates to connect, and the output terminal of the Data Analysis Services module and the input terminal of the A/D modular converters communicate to connect；
And the Data Analysis Services module is connected with interference pattern display screen, the Data Analysis Services module and spectrogram display screen phase
Even.
The data acquisition circuit module includes photodetector, chip, signal processor, USB module；The data point
Analysing processing module includes spectra collection module, spectral manipulation module, spectral analysis module, data report module, Wavelength calibration mould
Block, spectrum contrast module.The output terminal of the spectra collection module and the input terminal of the spectral manipulation module communicate to connect, institute
State the output terminal of spectral manipulation module and the input terminal of the spectral analysis module communicate to connect, the spectral analysis module it is defeated
The input terminal of outlet and the data report module communicates to connect, output terminal and the Wavelength calibration of the data report module
The input terminal communication connection of module, the output terminal of the Wavelength calibration module and the input terminal communication link of the spectrum contrast module
Connect.
The model LPC2148 that the chip uses；The model AD9826 of the signal processor；The photodetection
Device is using line scan image sensor G9203-256D；The power module is DC power supplier.
In the present embodiment：The data acquisition circuit module of infrared spectra measuring system is accomplished that data acquisition function,
Since whole infrared spectra measuring system requirement circuit is small, low in energy consumption, caloric value is small, scalability is strong, so of the invention
Using the low consumption circuit system based on ARM7.The main chip used has the ARM7 chips that PHILIP companies produce
LPC2148 and signal processor AD9826, photodetector is using line scan image sensor G9203-256D.Light is given first
Electric explorer provides clock signal, and then the line scan image sensor analog signal after AD9826 conversion process is adopted
Collection, then the data collected is temporarily stored on its USB buffering area, finally by the USB module that it is internally integrated by these data
It is sent in PC machine.
In the present embodiment：Data Analysis Services module is the core in system software.PCR is integrated with the module
With two kinds of algorithms of PLS.Software in PC machine mainly includes Data acquisition and issuance two large divisions, and general frame is to surround database
Module, six functions module is divided into by system.Spectra collection module is that the spectral signal of hardware is read into by usb protocol
PC machine；Spectral manipulation module is to carry out the basic handlings such as smooth, filtering to the signal of reading；Spectral analysis module, spectra collection
Module, spectrum contrast module, Wavelength calibration module and data report module are several basic accessory modules.Software number in PC machine
It is according to the basic procedure of collection：When user require gather when, first by USB to LPC2148 send characterization the time of integration and
The data of AD9826 bias voltages, then read the data sent from LPC2148 by USB again, finally utilize these data
Corresponding curve is drawn in coordinate diagram and completes data acquisition.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, described in the above embodiment and specification is only the present invention
Preference, be not intended to limit the present invention, without departing from the spirit and scope of the present invention, the present invention also have it is various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.
Claims (8)
- A kind of 1. infrared spectra measuring system, it is characterised in that：Including data acquisition circuit module, Data Analysis Services module, Power module, ARM control chips, time-sequence control module, USB data transmission module, A/D modular converters；The power module is The ARM control chips power supply, the ARM control chips realize two-way communication link with the USB data transmission module, described ARM control chips and the A/D modular converters realize two-way communication link, the output terminal of the ARM control chips with it is described when The input terminal communication connection of sequence control module, the power module is the data acquisition circuit module for power supply, the sequential control The output terminal of molding block and the input terminal of the data acquisition circuit module communicate to connect, and the power module is the data point Analyse processing module and electric power, the output terminal of the data acquisition circuit module and the input terminal of the Data Analysis Services module are provided Communication connection, the output terminal of the Data Analysis Services module and the input terminal of the A/D modular converters communicate to connect；It is and described Data Analysis Services module is connected with interference pattern display screen, and the Data Analysis Services module is connected with spectrogram display screen.
- A kind of 2. infrared spectra measuring system according to claim 1, it is characterised in that：The data acquisition circuit module Including photodetector, chip, signal processor, USB module.
- A kind of 3. infrared spectra measuring system according to claim 2, it is characterised in that：The Data Analysis Services module Including spectra collection module, spectral manipulation module, spectral analysis module, data report module, Wavelength calibration module, spectrum contrast Module.
- A kind of 4. infrared spectra measuring system according to claim 3, it is characterised in that：The spectra collection module it is defeated The input terminal of outlet and the spectral manipulation module communicates to connect, output terminal and the spectrum analysis of the spectral manipulation module The input terminal communication connection of module, the output terminal of the spectral analysis module and the input terminal communication link of the data report module Connect, the output terminal of the data report module and the input terminal of the Wavelength calibration module communicate to connect, the Wavelength calibration mould The output terminal of block and the input terminal of the spectrum contrast module communicate to connect.
- A kind of 5. infrared spectra measuring system according to claim 4, it is characterised in that：The model that the chip uses LPC2148。
- A kind of 6. infrared spectra measuring system according to claim 5, it is characterised in that：The model of the signal processor For AD9826.
- A kind of 7. infrared spectra measuring system according to claim 6, it is characterised in that：What the photodetector used It is line scan image sensor G9203-256D.
- A kind of 8. infrared spectra measuring system according to claim 7, it is characterised in that：The power module is direct current Source module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810031084.3A CN107941341A (en) | 2018-01-12 | 2018-01-12 | A kind of infrared spectra measuring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810031084.3A CN107941341A (en) | 2018-01-12 | 2018-01-12 | A kind of infrared spectra measuring system |
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| CN107941341A true CN107941341A (en) | 2018-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297908A (en) * | 2018-12-05 | 2019-02-01 | 泰安市康宇医疗器械有限公司 | A kind of microelement infrared spectra measuring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538963A (en) * | 2011-12-02 | 2012-07-04 | 华东师范大学 | High-sensitivity light spectrum acquisition and test system with board waveband covering visible light |
| CN102620823A (en) * | 2012-03-23 | 2012-08-01 | 北京工业大学 | Portable spectrometer capable of forming sensor network nodes |
| CN202853749U (en) * | 2012-07-26 | 2013-04-03 | 睿励科学仪器（上海）有限公司 | Spectrograph control circuit and spectrograph |
| CN103674248A (en) * | 2013-11-22 | 2014-03-26 | 深圳先进技术研究院 | Spectral data acquisition and transmission system and operating and application methods thereof |
-
2018
- 2018-01-12 CN CN201810031084.3A patent/CN107941341A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538963A (en) * | 2011-12-02 | 2012-07-04 | 华东师范大学 | High-sensitivity light spectrum acquisition and test system with board waveband covering visible light |
| CN102620823A (en) * | 2012-03-23 | 2012-08-01 | 北京工业大学 | Portable spectrometer capable of forming sensor network nodes |
| CN202853749U (en) * | 2012-07-26 | 2013-04-03 | 睿励科学仪器（上海）有限公司 | Spectrograph control circuit and spectrograph |
| CN103674248A (en) * | 2013-11-22 | 2014-03-26 | 深圳先进技术研究院 | Spectral data acquisition and transmission system and operating and application methods thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109297908A (en) * | 2018-12-05 | 2019-02-01 | 泰安市康宇医疗器械有限公司 | A kind of microelement infrared spectra measuring system |
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Application publication date: 20180420 |