CN1546987A - Minitype biochemical spectrum analyzer - Google Patents
Minitype biochemical spectrum analyzer Download PDFInfo
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- CN1546987A CN1546987A CNA200310111186XA CN200310111186A CN1546987A CN 1546987 A CN1546987 A CN 1546987A CN A200310111186X A CNA200310111186X A CN A200310111186XA CN 200310111186 A CN200310111186 A CN 200310111186A CN 1546987 A CN1546987 A CN 1546987A
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Abstract
The invention refers to a kind of micro biological spectrum analysis apparatus, which includes a sample chamber with light house, fiber, light splitting imaging system, data collecting card, computer interface and outer spectrum signal collecting/processing part. The character of the invention lies in: the light splitting imaging system is at back of the inputting ray of fiber, it is the post light splitting type, and it is made up of concave grating, photoelectric detecting array, and driving circuit. The detecting surface of the detecting array opposites to the reflecting surface of the concave grating, the grating spectrum image is coincident with the light sensitive surface of the detecting array. The driving circuit is behind the detector array. The product has a small volume, it is whole light spectrum scan, and the data collecting speed is quick.
Description
Technical field
The invention belongs to technical field of analytical instruments, particularly relate to a kind of miniature biochemical spectrometric instrument.
Background technology
In the prior art, the basic structure of Biochemical Analyzer comprises that light source, grating or color filter, sample chamber, detector array, control circuit, display device etc. partly form, adopt the Biochemical Analyzer of grating, be the scanning that realizes wavelength by the mechanical rotation of grating, speed is slow, can't realize real-time detection, be subjected to the influence of external shock easily.And the Biochemical Analyzer of employing color filter has only several specific wavelengths, can't detect the overall optical spectral coverage.And, the working method of beam split before existing these two kinds of Biochemical Analyzers all adopt, this introduces parasitic light easily in instrument, thereby must there be strict light-proofness its sample chamber.
Summary of the invention
The objective of the invention is the shortcoming that exists at existing biochemical spectroanalysis instrument, a kind of miniature biochemical spectrometric instrument is provided, volume is small, and full spectral scan, acquisition speed are fast, have stronger anti-seismic performance.
The present invention comes to be realized by the following technical programs: miniature biochemical spectrometric instrument comprises sample chamber, optical fiber, spectroscopic imaging system, data collecting card, microcomputer interface line and the external spectral signal collection/processing section of being with light source, be characterized in that the spectroscopic imaging system is after the input light of optical fiber, be back beam split form, it is made of concave grating, photoelectronic detecting array, driving circuit, the test surface of detector array is relative with the concave grating reflecting surface, the grating spectrum image planes are overlapped with the detector array photosurface, and driving circuit is positioned at the detector array rear.
Principle of work: the detected light that send the sample chamber is by optical fiber input spectroscopic imaging system, on photodetector array, obtain detected light spectrum through after the spectroscopic imaging, by driving circuit control detector array output spectrum signal, by data collecting card spectral signal is converted to digital signal again, send into computing machine by the microcomputer interface line at last and handle and analyze, thereby obtain the qualitative, quantitative result of detected material composition by spectral signal collection/processing/analysis software.
The present invention adopts single holographic flat filed concave grating because the spectroscopic imaging system architecture is simply compact, does not have other optical element, thereby has reduced the volume of biochemical spectrometric instrument greatly.Because what adopt is detector array, and the grating spectrum image planes overlap with the detector array photosurface, thus can realize of the expansion of full spectrum in the space, and need not the scanning that movable part carries out full spectrum.All elements are all fixing relatively, no-movable part, so external shock does not have influence to apparatus measures.Reduce and the anti-vibration of volume all make this instrument be easy to carry.This miniature biochemical spectroanalysis instrument, the spectral information that adopts photodetector array can obtain simultaneously in the full spectral range obtains.Adopt special-purpose high-speed data acquisition card to realize the real-time detection that full spectral range is interior.
The present invention can substitute traditional biochemical analyzer, is widely used in various fields such as biological chemistry, clinical medicine, food, import and export commodity inspection, environmental science and national defence.
Description of drawings
Fig. 1 is a basic structure block diagram of the present invention;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is a usb data capture card circuit block diagram of the present invention
Among the figure: 1, sample chamber 11 light sources, 12 collimation lenses, 13 sample cells, 14 coupling mirror groups
2, optical fiber
3, spectroscopic imaging system 31 concave gratings 32 photodetector arraies 33 driving circuits
4, data collecting card
5, microcomputer interface line
6, spectral signal collection/processing/analysis part
Specific embodiments
Referring to Fig. 1, Fig. 2 and Fig. 3, the present invention includes sample chamber 1, optical fiber 2, spectroscopic imaging system 3, data collecting card 4, microcomputer interface line 5 and the spectral signal collection/processing/analysis part 6 of band light source.Be provided with light source 11 in the sample chamber 1 successively, collimation lens 12, sample cell 13 and coupling mirror group 14, the optical fiber 2 input spectroscopic imaging systems 3 that the detected light of sending through them is passed through, after concave grating 31 spectroscopic imaging, on photodetector array 32, obtain detected spectrum, by driving circuit 33 control detector array output spectrum signals, by data collecting card 4 spectral signal is converted to digital signal again, send into computing machine by microcomputer interface line 5 at last and handle and analyze, thereby obtain the qualitative, quantitative result of detected material composition by spectral signal collection/processing/analysis part 6.Data collecting card 4 can adopt the usb data capture card of existing spectroanalysis instrument, circuit block diagram is referring to Fig. 3, and spectral signal amplifies through impedance matching, decay, enters extensive Programmable Logic Device FPGA again after the A/D conversion and handles, through usb circuit, be input to PC.Spectral signal collection/processing/analysis software has adopted filtering, match, peak value commonly used in the spectral signal processing to search scheduling algorithm, can finish real-time collection, processing and the demonstration of spectral signal.
Claims (3)
1, a kind of miniature biochemical spectrometric instrument, comprise the sample chamber (1) of being with light source, optical fiber (2), spectroscopic imaging system (3), data collecting card (4), microcomputer interface line (5) and external spectral signal collection/processing section (6), (1) afterwards in the sample chamber to it is characterized in that spectroscopic imaging system (3), be back beam split form, it is by concave grating (31), photoelectronic detecting array (32), driving circuit (33) constitutes, the test surface of photoelectronic detecting array (32) is relative with concave grating (31) reflecting surface, the grating spectrum image planes are overlapped with the detection array photosurface, and driving circuit (33) is positioned at photoelectronic detecting array (32) rear.
2, miniature biochemical spectrometric instrument according to claim 1 is characterized in that, all element relative fixed of this instrument.
3, miniature biochemical spectrometric instrument according to claim 1 and 2, it is characterized in that, the detected light that send sample chamber (1) is by optical fiber (2) input spectroscopic imaging system (3), on photodetector array, obtain detected light spectrum through after the spectroscopic imaging, by driving circuit control detector array output spectrum signal, by data collecting card (4) spectral signal is converted to digital signal again, send into computing machine by microcomputer interface line (5) at last and handle and analyze, thereby obtain the qualitative, quantitative result of detected material composition by spectral signal collection/processing/analysis part (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200310111186XA CN1546987A (en) | 2003-12-09 | 2003-12-09 | Minitype biochemical spectrum analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200310111186XA CN1546987A (en) | 2003-12-09 | 2003-12-09 | Minitype biochemical spectrum analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1546987A true CN1546987A (en) | 2004-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200310111186XA Pending CN1546987A (en) | 2003-12-09 | 2003-12-09 | Minitype biochemical spectrum analyzer |
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| CN (1) | CN1546987A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454001C (en) * | 2005-12-21 | 2009-01-21 | 沈阳东软医疗系统有限公司 | Optical system of spectrophotometer of full-automatic biochemical analyzer |
| CN103335713A (en) * | 2013-07-03 | 2013-10-02 | 华北水利水电大学 | Fixed-amplitude transmission and dispersion-sensitive spectral line measurement device |
| CN103398779A (en) * | 2013-07-11 | 2013-11-20 | 华北水利水电大学 | Constant-illumination transmission color-sensitive measuring device |
| CN104849223A (en) * | 2015-04-23 | 2015-08-19 | 南京大学 | Full spectrum on-line detection device and method for multiple organic mixed pollution wastewater concentration |
| CN105629464A (en) * | 2016-02-18 | 2016-06-01 | 中国科学院国家空间科学中心 | Diffraction-limiting imaging pseudo star source simulation system based on single reflector |
| CN106153102A (en) * | 2015-04-09 | 2016-11-23 | 北京中联电科技术有限公司 | A kind of multiparameter integration fluid sensor based on iraser technology |
| CN106525767A (en) * | 2016-12-07 | 2017-03-22 | 重庆大学 | Micro near-infrared spectrum analysis system for online oil gas detection |
| CN110320197A (en) * | 2018-03-31 | 2019-10-11 | 重庆大学 | Microminiature Raman blood specialized analyzer based on Raman spectrum analysis |
| CN111175424A (en) * | 2020-02-24 | 2020-05-19 | 大连依利特分析仪器有限公司 | Diode array detector based on multi-stage signal calibration and calibration method |
-
2003
- 2003-12-09 CN CNA200310111186XA patent/CN1546987A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454001C (en) * | 2005-12-21 | 2009-01-21 | 沈阳东软医疗系统有限公司 | Optical system of spectrophotometer of full-automatic biochemical analyzer |
| CN103335713A (en) * | 2013-07-03 | 2013-10-02 | 华北水利水电大学 | Fixed-amplitude transmission and dispersion-sensitive spectral line measurement device |
| CN103335713B (en) * | 2013-07-03 | 2015-09-30 | 华北水利水电大学 | A kind of fixed ampllitude transmission dispersion sensitivity spectrum line measurement mechanism |
| CN103398779A (en) * | 2013-07-11 | 2013-11-20 | 华北水利水电大学 | Constant-illumination transmission color-sensitive measuring device |
| CN103398779B (en) * | 2013-07-11 | 2016-01-20 | 华北水利水电大学 | The quick measurement mechanism of a kind of permanent illumination transmitted colour |
| CN106153102A (en) * | 2015-04-09 | 2016-11-23 | 北京中联电科技术有限公司 | A kind of multiparameter integration fluid sensor based on iraser technology |
| CN104849223A (en) * | 2015-04-23 | 2015-08-19 | 南京大学 | Full spectrum on-line detection device and method for multiple organic mixed pollution wastewater concentration |
| CN105629464A (en) * | 2016-02-18 | 2016-06-01 | 中国科学院国家空间科学中心 | Diffraction-limiting imaging pseudo star source simulation system based on single reflector |
| CN106525767A (en) * | 2016-12-07 | 2017-03-22 | 重庆大学 | Micro near-infrared spectrum analysis system for online oil gas detection |
| CN110320197A (en) * | 2018-03-31 | 2019-10-11 | 重庆大学 | Microminiature Raman blood specialized analyzer based on Raman spectrum analysis |
| CN111175424A (en) * | 2020-02-24 | 2020-05-19 | 大连依利特分析仪器有限公司 | Diode array detector based on multi-stage signal calibration and calibration method |
| CN111175424B (en) * | 2020-02-24 | 2022-04-08 | 大连依利特分析仪器有限公司 | Diode array detector based on multi-stage signal calibration and calibration method |
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