CN108918429A - Online and offline spectral data acquisition device based on linear array detector - Google Patents
Online and offline spectral data acquisition device based on linear array detector Download PDFInfo
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- CN108918429A CN108918429A CN201810639172.1A CN201810639172A CN108918429A CN 108918429 A CN108918429 A CN 108918429A CN 201810639172 A CN201810639172 A CN 201810639172A CN 108918429 A CN108918429 A CN 108918429A
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- 230000003595 spectral effect Effects 0.000 title description 2
- 238000001228 spectrum Methods 0.000 claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000004611 spectroscopical analysis Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004457 water analysis Methods 0.000 description 2
- 240000008067 Cucumis sativus Species 0.000 description 1
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000701 chemical imaging Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to an online and offline spectrum data acquisition device based on a linear array detector. The spectrum data acquisition device is used for overcoming the defects that the existing spectrum data acquisition device can only detect the spectrum in a fixed wavelength range and can not flexibly detect the spectrum with various wavelengths. The device comprises a signal processing adapter plate, a signal processing core unit, a detector driving circuit board, a detector adapter plate and a transmission interface; the signal processing core unit and the detector driving circuit board are both arranged on the signal processing adapter plate through a connecting socket, and the detector is connected with the detector driving circuit board through the detector adapter plate; the transmission interface is installed on the signal processing adapter plate.
Description
Technical field
The invention belongs to optical image technology fields, and in particular to a kind of online and offline spectrum based on linear array detector
Data acquisition device.
Background technique
Spectral imaging technology has become the important method of water analysis, and the more traditional chemical method of this technology is more
It is fast, convenient and accurate to accelerate.The content for how rapidly and accurately detecting Cucumber in water outlet, for environmental monitoring and pollution
Prevention and treatment has a very important significance.
Using spectroscopic methodology carry out water analysis a key technology be exactly to convert optical signals into electric signal, reconvert at
Digital signal.
In the prior art, the patent of invention of Publication No. 107782531A describes a kind of line array CCD spectral resolution inspection
Examining system, system processor are STM32 series monolithic, and data are handled by USB transmission to host computer；
The patent of invention of existing Publication No. 107643123A describes a kind of CCD detection system of micro spectrometer, adopts
Cooperated with CPLD device and USB2.0 interface chip, completes spectrum data gathering；
The acquisition system control chip of the patent of invention of existing Publication No. 101949830A, introduction is FPGA, is collected
Signal be transferred in computer by USB interface.
But there are following technical problems for the existing spectrum data gathering device of three of the above：
The result of conversion passes through USB transmission to host computer, and transmission range is limited by USB transmission distance, encounters seabed
Or the application scenarios that some transmission ranges are long, existing spectrum data gathering device such as method meet acquisition use over long distances and want
It asks.
The spectroscopic data of acquisition is transmitted to host computer in the form of online by existing acquisition system, is then carried out at data
Reason, no realizations method chip processing and by processing result offline storage, existing spectrum data gathering device such as method meets offline
Requirement.
Detector used in existing every kind of spectrum data gathering device is relatively fixed, therefore is only capable of when detection to fixed wave
The spectrum of long range is detected, can not the spectrum to various wavelength flexibly detected.
Summary of the invention
The object of the present invention is to provide a kind of online and offline spectrum data gathering device based on linear array detector, to
Existing spectrum data gathering device is overcome to be only capable of detecting the spectrum of fixed wave length range, it can not be to the spectrum of various wavelength
The defect flexibly detected.
In order to solve the above technical problems, the technical solution of the invention is as follows：
A kind of online and offline spectrum data gathering device based on linear array detector, is characterized in that：Including letter
Number processing pinboard, signal processing core cell, detector drive circuit board, detector pinboard and coffret；
Signal processing core cell, detector drive circuit board pass through connection socket and are mounted on signal processing pinboard
On, detector is connect by detector pinboard with detector drive circuit board；Coffret is mounted on signal processing pinboard
On, detector drive circuit board can be replaced flexibly, thus the device can be suitable for different material wavelength requirement, with
And the requirement to sensitivity.
It should be noted that：
Signal processing core cell is for the foundation of system context, signal processing and system control；
Signal processing adapter unit is used to drive as the motherboard, connection signal processing core circuit board, detector of system
Circuit board and offer system power supply；
Coffret is for spectroscopic data output transmission, the output of work debugging mode and the input of PC control signal.
Detector drive circuit board is used to generate to detector power supply, driving signal, analog signal receives, analog signal is filtered
Wave, analog signal conditioner and Analog-digital Converter；
Detector pinboard is fixedly mounted for detector signal switching and detector.
Further, for the application scenarios suitable for remote data acquisition, the coffret is Ethernet interface.
Further, in order to meet the offline acquisition of spectroscopic data, which further includes being mounted on signal processing to turn
Storage unit on fishplate bar.
Further, the storage unit is SD card or flash storage.
Further, the signal processing core cell includes ARM chip, FPFA chip and AXI bus；ARM chip
It is realized and is connected with each other by AXI bus with FPFA chip；Centered on ARM chip, fpga chip is signal processing core cell
Subsystem is extended, connection is realized by efficient AXI bus between them, wherein control of the ARM chip for human-computer interaction sum,
Fpga chip generates accurate driver' s timing signal.
Further, in order to increase the flexibility that detector carries optical system, detector pinboard passes through link winding displacement
It is electrically connected with detector drive circuit board.
Further, the detector is linear array detector.
The beneficial effects of the invention are as follows：
1, the present invention uses modularization idea, and detector drive circuit board is connected to signal processing by the way of inserting and turned
On fishplate bar, detector and driving circuit can be flexibly replaced, the spectrum of various wavelength can not flexibly be detected by overcoming
Defect.
2, Ethernet interface and storage unit are mounted in signal processing pinboard in the present invention, so that the device of the invention
Both can with online real time collecting spectroscopic data, can also the acquisition process in unattended embedded environment offline, while
Also it can satisfy the data transmission of long range in the case of line.
3, signal processing core cell of the invention is made of ARM chip and FPFA chip, and FPGA generates accurate driving
Clock signal, ARM chip greatly improve data-handling capacity.
4, detector pinboard is electrically connected by linking winding displacement with detector drive circuit board in the present invention, convenient to detect
Installation of the device in optical system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the present invention is implemented；
Fig. 2 is signal processing core cell and pinboard schematic diagram of the invention.
Fig. 3 is linear array detector of the invention and its driving circuit principle structure chart.
Appended drawing reference is as follows：
1- signal processing pinboard；2- signal processing core cell；3- detector drive circuit board；The switching of 4- detector
Plate；5- links winding displacement；6- storage unit；7- coffret.
Specific embodiment
The present invention is described in detail with attached drawing combined with specific embodiments below.
As shown in Figure 1, embodiment provides a kind of online and offline spectrum data gathering device based on linear array detector, packet
Include signal processing pinboard 1, signal processing core cell 2, detector drive circuit board 3, detector pinboard 4, coffret 7
And storage unit 6；
Signal processing core cell 2, detector drive circuit board 3 are mounted on signal processing pinboard by connecting socket
On 1, detector is connect by detector pinboard 4 with detector drive circuit board 3；Coffret 7 is mounted on signal processing and turns
On fishplate bar 1, detector drive circuit board 3 can be replaced flexibly, so that the device can be suitable for the wavelength of different material
It is required that and the requirement to sensitivity.
Wherein, storage unit is SD card or Flash, and detector is linear array detector,
Shown in Fig. 2, signal processing core cell 2 is made of ARM chip and FPFA chip, and specific circuit structure is:
Centered on ARM chip, fpga chip is extension subsystem, realizes connection by efficient AXI bus between them；Wherein
ARM chip is used for the control of human-computer interaction sum, and fpga chip generates accurate driver' s timing signal.Signal processing pinboard provides
It is connected between the power supply of system, the selection of system Starting mode, function selection, system instruction, plate.
Shown in Fig. 3, signal conditioning circuit, digital-to-analogue on the configuration detector drive circuit board 3 of signal processing core cell 2 turn
Change chip；And generate linear array detector work clock signal, analog-digital chip work clock signal, level conversion, general
The spectroscopic data analog signal that linear array detector receives is filtered, improves, being then converted into as digital signal reception to letter
In number processing core unit；It is in communication with each other between detector drive circuit board 3 and detector pinboard 4 using linking winding displacement, greatly
Flexibility when detector carries optical system is increased greatly.
When work is in online mode, after system electrification work, signal processing core cell by collected spectroscopic data,
By the network transport interface long distance transmission on signal processing pinboard to host computer, then carry out spectroscopic data processing；
When work is in offline mode, signal processing core cell carries out offline acquisition spectroscopic data, collected spectrum
Data are handled in real time on the ARM chip of signal processing core cell, then that processing result offline storage is single in storage
In member.
Claims (7)
1. a kind of online and offline spectrum data gathering device based on linear array detector, it is characterised in that：Including signal processing
Pinboard, signal processing core cell, detector drive circuit board, detector pinboard and coffret；
Signal processing core cell, detector drive circuit board pass through connection socket and are mounted on signal processing pinboard, visit
Device is surveyed to connect by detector pinboard with detector drive circuit board；Coffret is mounted on signal processing pinboard.
2. the online and offline spectrum data gathering device according to claim 1 based on linear array detector, feature exist
In：
The coffret is Ethernet interface.
3. the online and offline spectrum data gathering device according to claim 1 or 2 based on linear array detector, feature
It is：It further include the storage unit being mounted on signal processing pinboard.
4. the online and offline spectrum data gathering device according to claim 3 based on linear array detector, feature exist
In：The storage unit is SD card or F l ash memory.
5. the online and offline spectrum data gathering device according to claim 4 based on linear array detector, feature exist
In：The signal processing core cell includes ARM chip, FPFA chip and AXI bus；ARM chip and FPFA chip pass through
AXI bus, which is realized, to be connected with each other.
6. the online and offline spectrum data gathering device according to claim 5 based on linear array detector, feature exist
In：Detector pinboard is electrically connected by linking winding displacement with detector drive circuit board.
7. the online and offline spectrum data gathering device according to claim 6 based on linear array detector, feature exist
In：The detector is linear array detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810639172.1A CN108918429A (en) | 2018-06-20 | 2018-06-20 | Online and offline spectral data acquisition device based on linear array detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810639172.1A CN108918429A (en) | 2018-06-20 | 2018-06-20 | Online and offline spectral data acquisition device based on linear array detector |
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| Publication Number | Publication Date |
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| CN108918429A true CN108918429A (en) | 2018-11-30 |
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| CN201810639172.1A Pending CN108918429A (en) | 2018-06-20 | 2018-06-20 | Online and offline spectral data acquisition device based on linear array detector |
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Citations (9)
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|---|---|---|---|---|
| CN101509805A (en) * | 2009-03-27 | 2009-08-19 | 中国科学院上海光学精密机械研究所 | Multi-channel Parallel Data Acquisition System Based on Field Programmable Gate Array |
| CN102510339A (en) * | 2011-11-23 | 2012-06-20 | 济南凌康数控技术有限公司 | Ethernet networked connection device and system for realizing non-networked servo |
| CN102749042A (en) * | 2012-07-16 | 2012-10-24 | 南京理工大学 | Double-triangle type multi-channel medium wave infrared interference detection device |
| CN202995732U (en) * | 2012-12-30 | 2013-06-12 | 陕西海泰电子有限责任公司 | High-speed synchronous data acquisition card |
| CN103162822A (en) * | 2013-02-28 | 2013-06-19 | 中国人民解放军国防科学技术大学 | Online monitoring system of optical fiber laser output power based on integrating sphere |
| CN104122223A (en) * | 2014-08-07 | 2014-10-29 | 中国科学院上海微系统与信息技术研究所 | Double-optical-path multi-gas infrared sensor |
| CN106679805A (en) * | 2017-01-19 | 2017-05-17 | 深圳大学 | Portable miniature spectrograph |
| CN107396004A (en) * | 2017-08-11 | 2017-11-24 | 浙江工业大学 | A kind of linear array CCD image harvester based on ZYNQ |
| CN207067733U (en) * | 2017-07-28 | 2018-03-02 | 昆明理工大学 | A kind of Sync image capture system based on FPGA and ARM |
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2018
- 2018-06-20 CN CN201810639172.1A patent/CN108918429A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509805A (en) * | 2009-03-27 | 2009-08-19 | 中国科学院上海光学精密机械研究所 | Multi-channel Parallel Data Acquisition System Based on Field Programmable Gate Array |
| CN102510339A (en) * | 2011-11-23 | 2012-06-20 | 济南凌康数控技术有限公司 | Ethernet networked connection device and system for realizing non-networked servo |
| CN102749042A (en) * | 2012-07-16 | 2012-10-24 | 南京理工大学 | Double-triangle type multi-channel medium wave infrared interference detection device |
| CN202995732U (en) * | 2012-12-30 | 2013-06-12 | 陕西海泰电子有限责任公司 | High-speed synchronous data acquisition card |
| CN103162822A (en) * | 2013-02-28 | 2013-06-19 | 中国人民解放军国防科学技术大学 | Online monitoring system of optical fiber laser output power based on integrating sphere |
| CN104122223A (en) * | 2014-08-07 | 2014-10-29 | 中国科学院上海微系统与信息技术研究所 | Double-optical-path multi-gas infrared sensor |
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| CN107396004A (en) * | 2017-08-11 | 2017-11-24 | 浙江工业大学 | A kind of linear array CCD image harvester based on ZYNQ |
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