CN218782192U - Multichannel near infrared spectrum analyzer - Google Patents
Multichannel near infrared spectrum analyzer Download PDFInfo
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- CN218782192U CN218782192U CN202221897794.2U CN202221897794U CN218782192U CN 218782192 U CN218782192 U CN 218782192U CN 202221897794 U CN202221897794 U CN 202221897794U CN 218782192 U CN218782192 U CN 218782192U
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Abstract
The utility model relates to a multichannel near infrared spectroscopy analysis appearance, wherein, this spectroscopy analysis appearance includes: a multi-fiber halogen light source that taps off a plurality of optical fibers through a multi-fiber interface disposed thereon; one optical fiber of a plurality of optical fibers branched from the multi-optical fiber halogen light source is directly connected with an optical switch inlet optical fiber interface of the 1 xN optical switch, and other residual optical fibers are respectively connected with the optical switch inlet optical fiber interface of the 1 xN optical switch through an optical fiber probe; the calibration light source is connected with an optical switch inlet optical fiber interface of the 1 XN optical switch through an optical fiber; the 1 xN optical switch is connected with the spectrograph through an optical fiber interface at the outlet of the optical switch and an optical fiber interface of the spectrograph; the control main board is respectively connected with the multi-fiber halogen light source, the calibration light source, the 1 xN light switch and the spectrometer; the temperature sensor is connected with the control main board through a cable; and the computer mainboard is connected with the control mainboard through a cable. Adopted the utility model discloses a this multichannel near infrared spectrum analyzer can make light source output energy remain stable.
Description
Technical Field
The utility model relates to an infrared spectroscopic analysis technical field specifically indicates a multichannel near infrared spectroscopic analyzer.
Background
Near infrared spectral analysis, especially diffuse reflection spectral analysis, is widely applied to process analysis in the fields of tobacco, food, pharmacy, chemical industry and the like, and is used for process monitoring and quality control. The basic principle of the analysis is: the method comprises the steps that light emitted by a near-infrared light source irradiates a measured substance to generate transmission/diffuse reflection light on the measured substance, then the transmission/diffuse reflection light is subjected to light splitting detection through a spectrograph to obtain corresponding spectral data, and then the spectral data are calculated and processed through a corresponding chemometrics model to obtain qualitative/quantitative prediction information of the measured substance.
In a complex production environment/installation environment, the stability of the whole spectrometer, such as the stability of the light source and the accuracy of the obtained spectral wavelength, needs to be ensured under the condition of continuous operation. The existing spectrometer equipment has the problems of light intensity stability reduction of a light source, certain wavelength shift and the like in long-term operation. Therefore, there is a need for an apparatus that can effectively maintain the stability of the light source and the wavelength accuracy of the spectrometer for a long period of time to optimize the problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming among the above-mentioned prior art, provide a multichannel near infrared spectral analyser.
In order to achieve the above object, the utility model discloses a multichannel near infrared spectroscopy analysis appearance is specifically as follows:
the multichannel near infrared spectrum analyzer is mainly characterized by comprising:
the multi-fiber halogen light source is divided into a plurality of optical fibers through a multi-fiber interface arranged on the multi-fiber halogen light source;
one optical fiber of the optical fibers branched from the multi-optical fiber halogen light source is directly connected with an optical switch inlet optical fiber interface of the 1 xN optical switch, and the other residual optical fibers are respectively connected with the optical switch inlet optical fiber interface of the 1 xN optical switch through an optical fiber probe;
the calibration light source is connected with the optical switch inlet optical fiber interface of the 1 xN optical switch through an output interface;
the 1 xN optical switch is connected with the spectrograph through an optical switch outlet optical fiber interface and an optical fiber interface of the spectrograph;
the control mainboard is respectively connected with the multi-fiber halogen light source, the calibration light source, the 1 xN optical switch and the spectrometer;
the temperature sensor is connected with the control main board through a cable; and
and the computer mainboard is connected with the control mainboard through a cable so as to realize power supply and communication processing of other parts.
Preferably, when the 1 × N optical switch is switched to connect with the multi-fiber halogen light source:
the spectrometer detects the spectrum of the multi-fiber halogen light source and automatically adjusts the voltage of the multi-fiber halogen light source so as to keep the light source output stable light intensity.
Preferably, when the 1 × N optical switch is switched to connect with the calibration light source:
and the spectrometer analyzes and compares the characteristic spectral line of the calibration light source obtained by scanning, and the calibration light source carries out wavelength calibration processing on the spectrometer.
Preferably, when the 1 xn optical switch is switched to no optical channel, the 1 xn optical switch will perform dark current scanning processing on the background of the spectrometer.
Preferably, when the remaining optical fibers branched from the multi-fiber halogen light source are connected to the optical switch entrance fiber interface of the 1 × N optical switch through the fiber probe, the optical path is switched by the 1 × N optical switch, and the spectral analysis is performed on the plurality of fiber probes respectively.
Preferably, the temperature sensor is used for detecting the internal temperature of the spectrum analyzer, and when the temperature sensor detects that the current internal temperature exceeds a preset safe temperature, the temperature sensor automatically alarms and cuts off the power supply of the spectrum analyzer or the light source of the spectrum analyzer.
Preferably, the optical fiber probe of the 1 × N optical switch includes: the 1 XN optical switch is switched to different probe channels to scan the spectral information of corresponding samples and analyze and process the spectral information.
Preferably, the data detected by the temperature sensor and the spectral data of the sample scanned by the 1 × N optical switch are both sent to a computer terminal device through the computer motherboard, and the computer terminal device analyzes the corresponding data by using a chemometrics method, so as to eliminate prediction deviation caused by temperature change in a cabinet of the optical spectrum analyzer.
Adopted the utility model discloses a this multichannel near infrared spectrum appearance can be directly install fiber probe on the production line of explosion-proof region/dust region, a plurality of fiber probe can be connected to a host computer, can switch the fiber probe of different passageways and detect, the reduction that is showing detects the hardware cost, the stability of light source is ensured through the lamp voltage of adjustment light source simultaneously, the stability of spectrum appearance has been guaranteed through periodic wavelength calibration, ensure to obtain stable spectral data and stable accurate prediction result.
Drawings
Fig. 1 is a schematic structural diagram of the multi-channel near infrared spectrum analyzer of the present invention.
Reference numerals
1 multi-fiber halogen light source
2 calibrating light source
3 XN optical switch
4 spectrometer
5 control mainboard
6 computer mainboard
7 multi-fiber interface
8 optical switch entrance optical fiber interface
9 optical fiber probe
10 optical switch outlet optical fiber interface
11 optical fiber interface of spectrometer
12 optical fiber
13 temperature sensor
Detailed Description
In order to more clearly describe the technical content of the present invention, the following further description is given with reference to specific embodiments.
Before describing in detail embodiments that are in accordance with the present invention, it should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, the utility model discloses a near infrared spectroscopy analysis appearance of this kind of multichannel, wherein, the spectroscopy analysis appearance include:
the multi-fiber halogen light source is divided into a plurality of optical fibers through a multi-fiber interface arranged on the multi-fiber halogen light source;
one optical fiber of the optical fibers branched from the multi-optical fiber halogen light source is directly connected with an optical switch inlet optical fiber interface of the 1 xN optical switch, and the other residual optical fibers are respectively connected with the optical switch inlet optical fiber interface of the 1 xN optical switch through an optical fiber probe;
the calibration light source is connected with the optical switch inlet optical fiber interface of the 1 xN optical switch through an output interface;
the 1 xN optical switch is connected with the spectrometer through an optical switch outlet optical fiber interface and an optical fiber interface of the spectrometer;
the control mainboard is respectively connected with the multi-fiber halogen light source, the calibration light source, the 1 xN optical switch and the spectrometer;
the temperature sensor is connected with the control main board through a cable; and
and the computer mainboard is connected with the control mainboard through a cable so as to realize power supply and communication processing of other parts.
As a preferred embodiment of the present invention, when the 1 × N optical switch is switched to connect with the multi-fiber halogen light source:
the spectrometer detects the spectrum of the multi-fiber halogen light source and automatically adjusts the voltage of the multi-fiber halogen light source so as to keep the light source output stable light intensity.
As a preferred embodiment of the present invention, when the 1 × N optical switch is switched to connect with the calibration light source:
the spectrometer analyzes and compares the characteristic spectral line of the calibration light source obtained by scanning, and the calibration light source performs wavelength calibration processing on the spectrometer.
As a preferred embodiment of the present invention, when the 1 × N optical switch is switched to a non-optical channel, the 1 × N optical switch will perform a dark current scanning process on the background of the spectrometer.
As a preferred embodiment of the present invention, when the plurality of remaining optical fibers branched from the multi-fiber halogen light source are connected to the optical switch entrance optical fiber interface of the 1 × N optical switch through the optical fiber probe, the optical path is switched by the 1 × N optical switch, and the plurality of optical fiber probes are subjected to the spectral analysis.
As the preferred embodiment of the present invention, the temperature sensor is used for detecting the internal temperature of the spectrum analyzer, and when the temperature sensor detects that the current internal temperature exceeds the preset safe temperature, the temperature sensor automatically alarms and cuts off the power supply of the spectrum analyzer or the light source of the spectrum analyzer.
In a preferred embodiment of the present invention, the optical fiber probe of the 1 × N optical switch comprises: the 1 XN optical switch is switched to different probe channels to scan the spectral information of corresponding samples and analyze and process the spectral information.
As a preferred embodiment of the present invention, the data detected by the temperature sensor and the spectrum data scanned by the 1 × N optical switch are all transmitted to the computer terminal device through the computer motherboard, and the computer terminal device analyzes the corresponding data by using a chemometrics method to eliminate the analysis deviation caused by the temperature change in the housing of the spectrum analyzer.
The utility model discloses an among the specific embodiment, multi-fiber halogen light source 1 divides a plurality of optic fibres through multi-fiber interface 7, connect 1 XN photoswitch 3 through one of them of optic fibre 12, other optic fibre 12 connect the income light interface of optic fibre probe 9 (transmission probe/reflection probe/cross optical flow cell), another light-emitting interface connection optic fibre 12 of optic fibre probe 9 (transmission probe/reflection probe/cross optical flow cell), 1 XN photoswitch 3 entry fiber interface is connected to optic fibre 12, photoswitch export fiber interface 10 connects the fiber interface 11 of spectrum appearance 4 (visible-near infrared wave band) through optic fibre 12.
The temperature sensor 13 is connected with the control mainboard 5 through a cable, the control mainboard 5 is connected with the computer mainboard 6 through a cable, power supply and communication of each component are realized, the computer mainboard 6 runs the LINUX operating system, and control of the whole system is realized through special operating software. Meanwhile, the computer mainboard has a network function, and a user can log in the computer through a network cable/WIFI (wireless fidelity), so that remote multi-user login/control is realized.
In a specific embodiment of the utility model, switch to calibration light source 2 (xenon lamp mercury lamp light source) passageway through 1 XN photoswitch 3, through the spectrum that 4 scans of spectrum appearance obtained, carry out analysis and comparison to calibration light source 2's characteristic spectral line, then carry out the wavelength calibration to spectrometer 4.
In a specific embodiment of the present invention, switch to multi-fiber halogen light source 1 through 1 xn photoswitch 3, detect the spectrum of light source through spectrometer 4, automatically adjust the light source voltage, keep the light source output light intensity stable.
In one embodiment of the present invention, the background scan (dark current scan) of the spectrometer is performed by switching to the no light channel through the 1 xn optical switch 3.
In one embodiment of the present invention, the 1 xn optical switch 3 is switched to different probe (transmission probe/reflection probe/four-way optical flow cell) channels to scan the spectral information of the sample for analysis.
In a specific embodiment of the present invention, the internal temperature is detected by 2 temperature sensors 13 in the case, and the power of the light source/spectrometer is cut off after the set safe temperature is exceeded.
In a specific embodiment of the present invention, the data of the temperature sensor 13 and the spectrum data of the sample are simultaneously transmitted to the computer, and are analyzed by the chemometrics method, thereby eliminating the analysis deviation caused by the temperature change in the cabinet.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (8)
1. A multi-channel near-infrared spectrum analyzer, comprising:
the multi-fiber halogen light source is divided into a plurality of optical fibers through a multi-fiber interface arranged on the multi-fiber halogen light source;
one optical fiber of the optical fibers branched from the multi-optical fiber halogen light source is directly connected with an optical switch inlet optical fiber interface of the 1 xN optical switch, and the other residual optical fibers are respectively connected with the optical switch inlet optical fiber interface of the 1 xN optical switch through an optical fiber probe;
the calibration light source is connected with the optical switch inlet optical fiber interface of the 1 xN optical switch through an output interface;
the 1 xN optical switch is connected with the spectrograph through an optical switch outlet optical fiber interface and an optical fiber interface of the spectrograph;
the control mainboard is respectively connected with the multi-fiber halogen light source, the calibration light source, the 1 xN optical switch and the spectrometer;
the temperature sensor is connected with the control main board through a cable;
and the computer main board is connected with the control main board through a cable so as to realize power supply and communication processing of other parts.
2. The multi-channel nir spectrum analyzer of claim 1, wherein when the 1 x N optical switch is switched to connect with the optical fibers of the multi-fiber halogen light source:
the spectrometer detects the spectrum of the multi-fiber halogen light source and automatically adjusts the voltage of the multi-fiber halogen light source so as to keep the light source output stable light intensity.
3. The multi-channel nir spectrum analyzer as claimed in claim 1, wherein when the 1 x N optical switch is switched to connect with the calibration light source:
the spectrometer analyzes and compares the characteristic spectral line of the calibration light source obtained by scanning, and the calibration light source performs wavelength calibration processing on the spectrometer.
4. The multi-channel nir spectrum analyzer of claim 1, wherein when the 1 xn optical switch is switched to no optical channel, the 1 xn optical switch will perform dark current scan processing on the background of the spectrometer.
5. The multi-channel NIR spectrum analyzer as claimed in claim 1, wherein when the remaining optical fibers from said multi-fiber halogen light source are connected to the optical switch entrance fiber interface of said 1 XN optical switch via fiber probes, respectively, then said 1 XN optical switch is used to perform optical path switching for performing spectrum analysis on said plurality of fiber probes, respectively.
6. The multi-channel near infrared spectrum analyzer as claimed in claim 1, wherein the temperature sensor is used for detecting the internal temperature of the spectrum analyzer, and when the temperature sensor detects that the current internal temperature exceeds a preset safety temperature, the temperature sensor automatically alarms and cuts off the power supply of the spectrum analyzer or the light source of the spectrum analyzer.
7. The multi-channel near infrared spectrum analyzer as claimed in any one of claims 1 to 5, wherein the fiber optic probe of the 1 x N optical switch comprises: the 1 XN optical switch is switched to different probe channels to scan the spectral information of corresponding samples and analyze and process the spectral information.
8. The multi-channel near infrared spectrum analyzer as claimed in claim 6, wherein the data detected by the temperature sensor and the spectrum data scanned by the 1 XN optical switch are transmitted to the computer terminal device through the computer motherboard, and the computer terminal device analyzes the corresponding data by using a chemometric method to eliminate the prediction deviation caused by the temperature change in the case of the spectrum analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221897794.2U CN218782192U (en) | 2022-07-22 | 2022-07-22 | Multichannel near infrared spectrum analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221897794.2U CN218782192U (en) | 2022-07-22 | 2022-07-22 | Multichannel near infrared spectrum analyzer |
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| Publication Number | Publication Date |
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| CN218782192U true CN218782192U (en) | 2023-03-31 |
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| CN202221897794.2U Active CN218782192U (en) | 2022-07-22 | 2022-07-22 | Multichannel near infrared spectrum analyzer |
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- 2022-07-22 CN CN202221897794.2U patent/CN218782192U/en active Active
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Effective date of registration: 20230621 Address after: 201601 Room 117, Building 1, No. 599, Gaoji Road, Sijing Town, Songjiang District, Shanghai Patentee after: Pusheng Tianchuang Optical Technology (Shanghai) Co.,Ltd. Address before: 200233 Room 501, No. 28, Lane 768, Qinzhou South Road, Xuhui District, Shanghai Patentee before: Song Yong |