CN201788146U - Pulsed xenon lamp type soil nutrient tester - Google Patents
Pulsed xenon lamp type soil nutrient tester Download PDFInfo
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- CN201788146U CN201788146U CN2010205113268U CN201020511326U CN201788146U CN 201788146 U CN201788146 U CN 201788146U CN 2010205113268 U CN2010205113268 U CN 2010205113268U CN 201020511326 U CN201020511326 U CN 201020511326U CN 201788146 U CN201788146 U CN 201788146U
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- soil nutrient
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Abstract
The utility model provides a pulsed xenon lamp type soil nutrient tester. The pulsed xenon lamp type soil nutrient tester is characterized in that a pulsed xenon lamp capable of emitting 200-760mm continuous spectrum is adopted as an ultraviolet and visual light source, a diffracting grating computer-tomography (C-T) monochromator is used as a light splitter component to realize light splitting after synchronization, a 1024-pixie photodiode array (PDA) is used as a detector so that full-waveband spectrum scanning can be realized without rotating a grating, and a 16-bit STM32 single chip microcomputer based on an ARMCortex-M3 embedding system is used for signal processing. The pulsed xenon lamp type soil nutrient tester not only has the fundamental functions of a conventional ultraviolet and visual light spectrophotometer for a lab, but also has additional functions of portability, shock resistance, speediness, economical property, practicality and the like, and can accurately, speedily and highly effectively test nonmetal elements such as nitrogen (N), phosphorus (P), sulphur (S), boron (B) and the like in soil nutrient.
Description
Technical field
The utility model belongs to the soil nutrient detection range, relates in particular to a kind of pulse xenon lamp formula soil nutrient tester.
Background technology
The soil nutrient parameter is important soil fertility index, and it has reflected the ability of soil supply plant growth.In recent years, China carries out the fertilization compositions based on earth measurement technology energetically, improves utilization rate of fertilizer with promotion, and reduces effectively because the excessive problem of environmental pollution that applies fertilizer and cause.The soil nutrient test is the basis of fertilization compositions based on earth measurement, and it is the basis of accurate fertilising that soil nutrient is carried out measuring accurately and fast.Detection to soil nutrient has several different methods, and generalized case can be by the metal trace element in the atomic absorption spectrophotometer (AAS) measured soil; For the nonmetalloid in the soil, method commonly used is to be undertaken by ultraviolet spectrophotometer or photolometer; By pH value in the electrochemical sensor measured soil and conductivity etc.Part a great number of elements in the soil also has the report of testing by near-infrared method.
Nonmetalloid test ultra-violet and visible spectrophotometer commonly used adopts single beam or twin-beam light source, single pass photomultiplier realization opto-electronic conversion usually, adopts Wavelength scanning mechanism (grating or sine mechanism) to realize the length scanning of overall optical spectral limit usually in the soil nutrient.Therefore, this quasi-instrument is bulky, measuring speed is slow, can not on-line measurement, the instrument request for utilization fixedly is laid that any vibrations condition can not be arranged, so it can only use in the laboratory, and has limited its application in agriculture scene and industry spot.In recent years, along with the development of technology such as photoelectric technology, computer technology, CCD detecting device, that such spectrophotometer miniaturization, portability are directly carried out the business demand of rig-site utilization is more and more.
The utility model content
The utility model is big at the equipment volume that prior art exists, and the deficiency of test condition harshness provides a kind of pulse xenon lamp formula soil nutrient tester.It is characterized in that described sample block is between light source module and spectral module, described spectral module links to each other with detection module, and described detection module links to each other with signal processing module, and described signal processing module links to each other with display module;
Power module links to each other with described light source module;
Control module links to each other with described power module, light source module and signal processing module respectively.
Described light source module is a pulse xenon lamp, the continuous spectrum of emission 200-760nm.
Described spectro-grating is the C-T monochromator, and wavelength coverage is 190-1000nm.
Described detecting device is the photodiode array detector of 1024 pixels.
Signal Processing in described CPU and the Communications Control Interface module adopts 16 STM32 single-chip microcomputers based on the ARMCortex-M3 embedded system.
Described sample block adopts quartz sample pool.
The utility model has not only been realized the high precision beam split, also can scan full spectrum once, light source not only the life-span long, and can when carrying out scanning, start at any time, do not need preheating.Therefore, pulse xenon lamp formula soil nutrient tester of the present utility model not only has the basic function of Routine Test Lab with ultra-violet and visible spectrophotometer, also have portable, antidetonation, additional function such as quick, economic, practical, can carry out the efficient test of nonmetalloid in the soil nutrient accurately and quickly.
Description of drawings
Below in conjunction with accompanying drawing the utility model is elaborated:
Fig. 1 is that the structure of pulse xenon lamp formula soil nutrient tester is formed.
Embodiment
As shown in Figure 1, pulse xenon lamp formula soil nutrient tester is made up of power module, light source module, sample block, spectral module, signal processing module, control module, display module.
Power module is made up of 220V Alternating Current Power Supply and 12V lithium ion battery, is responsible for utilizing alternating current or accumulator to give each parts power supply of instrument.
Light source module is made up of pulse xenon lamp, can launch the continuous spectrum of 200-760nm, shines on the sample block.
Sample block uses the quartz specimen cuvette to reduce the loss of ultraviolet light.
Spectral module carries out beam split to the complex light by sample block, adopts diffraction grating C-T monochromator as optical splitter section, realizes back beam split synchronously and does not influence resolution.
Detection module adopts the photodiode array PDA of 1024 pixels as detecting device, and the light signal behind the grating beam splitting is transformed into electric signal, need not rotating shutter and can realize all band spectral scan.
Electric signal through detection module transfers to signal processing module, and the data after the processing show by display module.
Control module adopts 16 STM32 single-chip microcomputer and I/O interfaces thereof based on ARM Cortex-M3 embedded system, the switching of control power supply and light source, and the various raw informations of detection module collection are analyzed and are handled.
Display module adopts 2.8 cun 320 * 240 very color touch-screen.
Claims (4)
1. pulse xenon lamp formula soil nutrient tester, it is characterized in that described sample block is between light source module and spectral module, described spectral module links to each other with detection module, described detection module links to each other with signal processing module, and described signal processing module links to each other with display module;
Power module links to each other with described light source module;
Control module links to each other with described power module, light source module and signal processing module respectively.
2. tester as claimed in claim 1 is characterized in that, described light source module is a pulse xenon lamp.
3. tester as claimed in claim 1 is characterized in that, described spectral module is the C-T monochromator.
4. tester as claimed in claim 1 is characterized in that, described detection module is the photodiode array detector of 1024 pixels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205113268U CN201788146U (en) | 2010-08-31 | 2010-08-31 | Pulsed xenon lamp type soil nutrient tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205113268U CN201788146U (en) | 2010-08-31 | 2010-08-31 | Pulsed xenon lamp type soil nutrient tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788146U true CN201788146U (en) | 2011-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205113268U Expired - Fee Related CN201788146U (en) | 2010-08-31 | 2010-08-31 | Pulsed xenon lamp type soil nutrient tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201788146U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685998A (en) * | 2012-05-04 | 2012-09-19 | 天津大学 | Pulse xenon lamp controller |
| CN104390701A (en) * | 2014-10-31 | 2015-03-04 | 上海光谱仪器有限公司 | Pulse xenon lamp-CCD small spectrometer system and light source external synchronization method |
| CN105203481A (en) * | 2015-09-21 | 2015-12-30 | 上海光谱仪器有限公司 | Spectrophotometer data collecting system and method based on pulse xenon lamp |
| CN106979818A (en) * | 2017-05-11 | 2017-07-25 | 泰安市康宇医疗器械有限公司 | A kind of light splitting afterwards grating monochromator |
-
2010
- 2010-08-31 CN CN2010205113268U patent/CN201788146U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685998A (en) * | 2012-05-04 | 2012-09-19 | 天津大学 | Pulse xenon lamp controller |
| CN104390701A (en) * | 2014-10-31 | 2015-03-04 | 上海光谱仪器有限公司 | Pulse xenon lamp-CCD small spectrometer system and light source external synchronization method |
| CN105203481A (en) * | 2015-09-21 | 2015-12-30 | 上海光谱仪器有限公司 | Spectrophotometer data collecting system and method based on pulse xenon lamp |
| CN106979818A (en) * | 2017-05-11 | 2017-07-25 | 泰安市康宇医疗器械有限公司 | A kind of light splitting afterwards grating monochromator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20140831 |
|
| EXPY | Termination of patent right or utility model |