CN204007870U - Based on the portable spectrum fast detector of quantum effect photodetector - Google Patents
Based on the portable spectrum fast detector of quantum effect photodetector Download PDFInfo
- Publication number
- CN204007870U CN204007870U CN201420412615.0U CN201420412615U CN204007870U CN 204007870 U CN204007870 U CN 204007870U CN 201420412615 U CN201420412615 U CN 201420412615U CN 204007870 U CN204007870 U CN 204007870U
- Authority
- CN
- China
- Prior art keywords
- quantum effect
- photodetector
- converter
- microcontroller
- effect photodetector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model discloses a kind of portable spectrum fast detector based on quantum effect photodetector, be characterized in that this detector is by popping one's head in, Said closes device, photodetector, amplifying circuit, A/D converter, storer, micro controller and time sequence driving circuit composition, the Said that states closes device the photometry for the treatment of of probe importing is disperseed to project photodetector with the light of different wave length, by sensing circuit, electric signal is read to rear input amplifying circuit, electric signal through amplifying carries out buffer memory by storer after by A/D converter, transfer data to LCD display by microcontroller by USB interface or WiFi module or radio receiving transmitting module carries out terminal processes.The utility model compared with prior art has modularization, intellectuality, widen the working range of spectrum, measuring accuracy, sensitivity and speed are improved, compact conformation, performance is good, has especially met integrated, miniaturization and the light-weighted demand of environmental protection, field, Site Detection and spaceborne analyzing and testing.
Description
Technical field
The utility model relates to spectrum detection technique field, specifically a kind of portable biometric spectrum fast detector based on quantum effect photodetector.
Background technology
Spectral instrument is the device for the spectrum of research and analysis material, and its basic function is to measure the spectral composition of material absorbing, transmitting, scattering or the stimulated emission studied, comprises its wavelength and intensity etc.Spectral technique utilizes light to realize the detection to sample parameters at absorption, reflection and the scattering signatures of sample inside, the demand that is widely used in a large amount of civilian spectrometers such as field, particularly food security, environment and biological monitoring such as environmental monitoring, biomedicine, science and technology agricultural, military analysis and industrial flow monitoring constantly increases.
Along with, efficient cheap optical element and the appearance of linear array detection means and the development of computer technology, the development of the micro-fabrication technologies such as binary optical makes spectral instrument break away from gradually the limitation in laboratory from phase early 1990s, to intellectuality, microminiaturization and integrated direction development.The application of spectral technique is extended to the more wide field outside laboratory, as environmental protection, field, Site Detection, spaceborne analyzing and testing etc., requires firmly resistance to shaking, miniaturization and lightweight of instrument.
At present, portable spectrometer all adopts silicon materials CCD or CMOS detector array, due to the band gap 1.1eV of silicon, cause its responding range visible-range and near, the data processing of rear end must connect computer and could show, make photoelectric receiving device and rear end driving circuit and data Collection & Processing System realize modularization and integrated, structure is not compact, anti-vibration, anti-environment temperature pressure change poor-performing, especially can not meet the needs of intellectuality, miniaturization and lightweight development.
Utility model content
The purpose of this utility model is a kind of portable spectrum fast detector based on quantum effect photodetector designing for the deficiencies in the prior art, adopt quantum effect photodetection and data transmission module, make photoelectric receiving device and rear end driving circuit and data Collection & Processing System realize digitizing, modularization and system automation, further widen the working range of spectrum, improve measuring accuracy, sensitivity and speed, compact conformation, anti-vibration, it is good that anti-environment temperature pressure changes performance, especially met environmental protection, field, the intellectuality of Site Detection and spaceborne analyzing and testing, miniaturization and light-weighted demand.
The purpose of this utility model is achieved in that a kind of portable spectrum fast detector based on quantum effect photodetector, be characterized in that this spectrum fast detector closes device, quantum effect photodetector, frontend amplifying circuit, A/D converter, FIFO storer, microcontroller and time sequence driving circuit by fibre-optical probe, Guang Xian Said and forms, described quantum effect photodetector docking sensing circuit, described time sequence driving circuit drives for sensing circuit, A/D converter and FIFO storer provide CPLD sequential, described microcontroller is the MCU main control chip that is provided with WiFi module and USB interface, what the fine Said of described light closed that device imports fibre-optical probe treats that photometry disperses to project quantum effect photodetector with the light of different wave length and carries out the conversion of photosignal, by sensing circuit by the electric signal input front end amplifying circuit of reading, input fifo memory after the electric signal amplifying converts digital signal to by A/D converter, FIFO storer stores digital signal into static RAM (SRAM) under time sequence driving circuit and microcontroller are collaborative, the microcontroller being connected by storer transfers data to LCD display by USB interface or WiFi module or radio receiving transmitting module carries out terminal processes.
Described quantum effect photodetector is 1 ' 64 yuan of quantum well-quantum dot optoelectronic detection array.
The utility model compared with prior art has modularization, intellectuality, further widen the working range of spectrum, measuring accuracy, sensitivity and speed are improved, compact conformation, it is good that anti-vibration, anti-environment temperature pressure change performance, especially met integrated, miniaturization and the light-weighted demand of environmental protection, field, Site Detection and spaceborne analyzing and testing.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
embodiment
Consult accompanying drawing 1, the utility model closes device 2, quantum effect photodetector 3, sensing circuit 4, frontend amplifying circuit 5, A/D converter 6, FIFO storer 7, microcontroller 8, LCD display or radio receiving transmitting module 9 by fibre-optical probe 1, Guang Xian Said and time sequence driving circuit 10 forms.Described quantum effect photodetector 3 is 1 ' 64 yuan of quantum well-quantum dot optoelectronic detection array docking sensing circuit 4 of high sensitivity; Described A/D converter 6 adopts 16 AD conversion chips of LTC1608, and its operating voltage is +/-6V, built-in high-performance sampling holder and reference voltage source; Ccd signal after described FIFO storer 7 adopts static RAM to A/D conversion carries out buffer memory; Described time sequence driving circuit 10 drives for sensing circuit 4, A/D converter 6 and FIFO storer 7 provide CPLD sequential; The main control chip that described microcontroller 8 adopts STM32F407 to contain MCU, main control chip is provided with WiFi module and USB interface.
The utility model is like this work: what the fine Said of light closed that device 2 imports fibre-optical probe 1 treats that photometry disperses to project quantum effect photodetector 3 with the light of different wave length and carries out the conversion of photosignal.The light signal of detection is converted to current/voltage/charge signal by quantum effect photodetector 3, light signal is subject to optical excitation to obtain the electron hole pair of space separation and is stored at the low dimensional structures of quantum well-quantum dot, orders about subsequently the electronics of storage read by sensing circuit 4 by applying certain bias voltage.The electric signal of reading accesses A/D converter 6 through frontend amplifying circuit 5, A/D converter 6 chips adopt multistage differential pipeline structure, be built-in with output error correction logic, can be to provide 16 precision at 500Kbps data speed, and ensure there is no error code within whole operating temperature range.Ccd signal after FIFO storer 7 is changed A/D converter 6 carries out buffer memory, FIFO storer 7 stores digital signal into static RAM (SRAM) under time sequence driving circuit 10 and microcontroller 8 collaborative, realize separating of data storage and data transmission, ensure frequency acquisition and the transmission frequency of system.Microcontroller 8 is coordinated the work between each module, receives data and data is stored in to the static RAM (SRAM) of FIFO storer 7, finally transfers data to LCD display by USB interface or WiFi module or radio receiving transmitting module 9 carries out terminal processes.
More than just the utility model is further described, not in order to limit practicing of this patent, all is that the utility model equivalence is implemented, within all should being contained in the claim scope of this patent.
Claims (2)
1. the portable spectrum fast detector based on quantum effect photodetector, it is characterized in that this spectrum fast detector closes device (2), quantum effect photodetector (3), frontend amplifying circuit (5), A/D converter (6), FIFO storer (7), microcontroller (8) and time sequence driving circuit (10) by fibre-optical probe (1), Guang Xian Said and forms, described quantum effect photodetector (3) docking sensing circuit (4), described time sequence driving circuit (10) is that sensing circuit (4), A/D converter (6) and FIFO storer (7) provide CPLD sequential to drive, described microcontroller (8) is for being provided with the MCU main control chip of WiFi module and USB interface, what the fine Said of described light closed that device (2) imports fibre-optical probe (1) treats that photometry disperses to project quantum effect photodetector (3) with the light of different wave length and carries out the conversion of photosignal, by sensing circuit (4) by the electric signal input front end amplifying circuit (5) of reading, input fifo memory (7) after the electric signal amplifying converts digital signal to by A/D converter (5), FIFO storer (7) stores digital signal into static RAM (SRAM) under time sequence driving circuit (10) and microcontroller (8) are collaborative, the microcontroller (8) being connected by storer (7) transfers data to LCD display by USB interface or WiFi module or radio receiving transmitting module (9) carries out terminal processes.
2. the portable spectrum fast detector based on quantum effect photodetector according to claim 1, is characterized in that described quantum effect photodetector (3) is 1 ' 64 yuan of quantum well-quantum dot optoelectronic detection array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412615.0U CN204007870U (en) | 2014-07-25 | 2014-07-25 | Based on the portable spectrum fast detector of quantum effect photodetector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412615.0U CN204007870U (en) | 2014-07-25 | 2014-07-25 | Based on the portable spectrum fast detector of quantum effect photodetector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204007870U true CN204007870U (en) | 2014-12-10 |
Family
ID=52047852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412615.0U Withdrawn - After Issue CN204007870U (en) | 2014-07-25 | 2014-07-25 | Based on the portable spectrum fast detector of quantum effect photodetector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204007870U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165692A (en) * | 2014-07-25 | 2014-11-26 | 华东师范大学 | Portable spectrum rapid detector based on quantum effect photodetector |
| CN104833421A (en) * | 2015-05-22 | 2015-08-12 | 华东师范大学 | Spectrum calibration method based on monochromator |
| CN105181129A (en) * | 2015-08-12 | 2015-12-23 | 华东师范大学 | Wireless-control weak light detection method based on high-sensitive photoelectric detector |
| CN105548033A (en) * | 2016-01-15 | 2016-05-04 | 华东师范大学 | Quantum dot embedded spectrograph |
-
2014
- 2014-07-25 CN CN201420412615.0U patent/CN204007870U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165692A (en) * | 2014-07-25 | 2014-11-26 | 华东师范大学 | Portable spectrum rapid detector based on quantum effect photodetector |
| CN104833421A (en) * | 2015-05-22 | 2015-08-12 | 华东师范大学 | Spectrum calibration method based on monochromator |
| CN105181129A (en) * | 2015-08-12 | 2015-12-23 | 华东师范大学 | Wireless-control weak light detection method based on high-sensitive photoelectric detector |
| CN105181129B (en) * | 2015-08-12 | 2017-03-29 | 华东师范大学 | A kind of controlled in wireless low-light detection method based on highly sensitive photodetector |
| CN105548033A (en) * | 2016-01-15 | 2016-05-04 | 华东师范大学 | Quantum dot embedded spectrograph |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204007870U (en) | Based on the portable spectrum fast detector of quantum effect photodetector | |
| CN105628199A (en) | Chip spectrograph with sub-wavelength metal structure | |
| CN102538963A (en) | High-sensitivity light spectrum acquisition and test system with board waveband covering visible light | |
| CN102147365A (en) | Handheld bioluminescent detector and detection method | |
| CN103674902A (en) | LSPR (Localized Surface Plasmon Resonance) portable biochemical detector based on mobile phone platform | |
| CN204359434U (en) | A kind of imaging spectral instrument system | |
| CN105157834A (en) | Spectral data acquisition system based on CCD and photomultiplier | |
| CN107643123A (en) | A kind of CCD detecting systems of micro spectrometer | |
| CN204101182U (en) | A kind of high-speed micro fiber spectrometer based on FPGA | |
| CN101943603A (en) | Solar power spectrum radiation measuring instrument based on charge coupler | |
| CN203231973U (en) | Working circuit of Raman spectrometer | |
| CN104535498B (en) | Organic phosphorus detector | |
| CN104931636A (en) | Ultraviolet capillary column detector based on CCD | |
| CN108267423B (en) | A kind of operating circuit of raster micro mirror near infrared spectrometer | |
| CN104406694A (en) | Portable spectrometer data collecting, processing and displaying system | |
| CN105548033A (en) | Quantum dot embedded spectrograph | |
| CN203164122U (en) | Handheld raman spectrometer | |
| CN203798725U (en) | Ozone analysis system | |
| CN105067552A (en) | Spectrum phased array analysis technology-based infrared gas detecting instrument | |
| CN104165692A (en) | Portable spectrum rapid detector based on quantum effect photodetector | |
| CN205538649U (en) | Embedded spectrum appearance of quantum dot | |
| CN105067566A (en) | Portable intelligent measuring device for measuring gas concentration | |
| CN102589690B (en) | Operating circuit for micro electronic mechanical system (MEMS) scanning micro-mirror spectrometer | |
| CN105222893A (en) | A kind of spectrum data gathering system based on high-voltage adjusting circuit | |
| CN205607854U (en) | Extendible test platform based on tunable semiconductor laser absorption spectrum technique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |