CN1687772A - Quick detector for photosynthetic capacity of irradiation from light emitting diode - Google Patents
Quick detector for photosynthetic capacity of irradiation from light emitting diode Download PDFInfo
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- CN1687772A CN1687772A CN 200510034161 CN200510034161A CN1687772A CN 1687772 A CN1687772 A CN 1687772A CN 200510034161 CN200510034161 CN 200510034161 CN 200510034161 A CN200510034161 A CN 200510034161A CN 1687772 A CN1687772 A CN 1687772A
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- darkroom
- chamber body
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- photosynthetic capacity
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Abstract
This invention is a detector for capability of the LED irradiation photosynthesis. It contains the dark room, excitation mount for visible light, detection mount for dim light,A-D converter .The setup of thr darkroom is for intravital ertrance. The excitation mount for visible light is LED mount. The detection mount for dim light contains optical fibre,electron-multiplier phototube. The fibre connects the dark room and the electron-multiplier phototube. The date handling mount is singlechip systerm. It is connected to the electron-multiplier phototube by the A-D converter as well as through the control interface. This product is light and small, it is easy to remove and can be carried easily. So it can perform as a out-door somatometer. It conquers the existing product's weakness--big inaccuracy made by used as a somatometer. The structure is simple and appropriate. It is easy to operate and is very cheap. It is do good to its extention.
Description
Technical field
The present invention relates to a kind of photosynthesis rate measuring equipment, particularly a kind of light emitting diode (LED) quick detector for photosynthetic capacity of irradiation.
Background technology
Photosynthesis rate is an important indicator that characterizes the plant photosynthesis ability.In photosynthesis rate was measured, generally the instrument of Shi Yonging was the photosynthetic rate analyzer of LI-62XX series at present.Its principle is according to blade CO on unit interval, unit area
2Reduction determine the photosynthetic rate of blade.There are many problems in this instrument, mainly shows the following aspects: (1) this instrument in measuring process is subjected to the restriction of external environment factor more serious.As light intensity, humidity, CO
2The change of concentration moment all can bring very big difference to measurement result.Therefore, measure one group of active data and often will spend long time.(2) because the time that continues when measuring is long, and be engraved in change during extraneous ambient condition, therefore, the data that record are a series of random numbers, can not reflect the photosynthetic rate of tested plant under physiological condition of living at that time.(3) since in measuring process the respiration and the transpiration of plant leaf blade, make the environmental baseline (CO that leaf is indoor
2Concentration, humidity etc.) and external condition inconsistent, and instrument itself can not well compensate this difference.(4) this instrument price comparison costliness is unfavorable for the universal use in agricultural production.
In order to overcome the shortcoming and deficiency that the said equipment exists, the patent No. of the applicant's application is that the patent of invention of ZL02115395.7 discloses a kind of " the photosynthetic rate measurement mechanism of visible light-inducing delayed luminescence ", this device has low cost of manufacture, the advantage that measurement effect is good, but still exist following problem: (1) fixedly installs structure because to be volume bigger in its component part darkroom, and equipment such as microcomputer also are relatively large equipment, so this device can not move flexibly according to measurement requirement, plant leaf blade must be taken off to put in the darkroom and measure, also promptly exsomatize and measure, so just will inevitably influence the accuracy of measurement result, owing to can not realize the live body field survey, range of application has bigger restriction like this; (2) in the measuring process, because structural problem, when receive delay fluorescence, 2～5 seconds time delay is arranged, because the downtrending of delayed fluorescence is very fast, most of useful information is all before 5 seconds, so this has reduced obtaining of useful information in the delayed fluorescence greatly, influenced the correlativity of delayed fluorescence and photosynthetic efficiency to a great extent, this has considerable influence for practicality; (3) with CCD or ICCD as optical fiber receive module, the volume of itself is just bigger, but also needs cooled with liquid nitrogen, this makes this portable devices property relatively poor with regard to more having increased the volume of whole device, is unfavorable for outdoor somatometry, use is limited to.
Summary of the invention
The shortcoming that the objective of the invention is to overcome prior art provides a kind of rational in infrastructure, good portability with not enough, can be used for the live body field survey, the light emitting diode that action effect is good (LED) quick detector for photosynthetic capacity of irradiation.
Purpose of the present invention is achieved through the following technical solutions: this LED quick detector for photosynthetic capacity of irradiation comprises darkroom, excited by visible light assembly, weak light detection assembly, analog to digital converter, data handling component, excited by visible light assembly and weak light detection assembly are connected with the darkroom, the weak light detection assembly is connected with data handling component by analog to digital converter (A/D converter), it is characterized in that: described darkroom is set to be convenient to the structure that live body stretches into; Described excited by visible light assembly is a LED illumination part; Described weak light detection assembly comprises optical fiber, photomultiplier transit tube module, optical fiber one end stretches into the darkroom, the other end is connected with the photomultiplier transit tube module, described data handling component is a scm managing system, described scm managing system is connected with described photomultiplier transit tube module by analog to digital converter on the one hand, making the photomultiplier transit tube module be delivered to scm managing system after obtaining signal handles, also be connected with the photomultiplier transit tube module on the other hand, with starting or stoping of control photomultiplier transit tube module by control interface (as analog switch, relay).
Described darkroom is upper and lower opposite opened structure, comprise chamber body, following chamber body, upper and lower chamber body is connected by hinge or hinge, upper and lower chamber body is provided with chimeric bulge loop and groove mutually, being connected of described bulge loop and groove can form dark chamber, body relative engagement face also is provided with the through hole face in upper and lower chamber, and two through hole face relative engagement can form the through hole that is communicated with dark chamber by the external world, is convenient to the placement of live body.
The upper and lower chamber body in described darkroom is provided with the sealing gasket that is in the light in the position near the through hole face; Be mainly used in and compress live body and shut out the light, make dark chamber light tight.
The upper and lower chamber body in described darkroom also can be splits separated structures fully, and its inner structure is with top described; When not using, upper and lower chamber body can be separated, when needs use, upper and lower chamber body be coincide and dock.
Be provided with fixed sturcture (as bayonet socket, latch closure) between the upper and lower chamber body in described darkroom, be convenient to upper and lower chamber body and after butt joint, fix.
Also can be provided with spring between the upper and lower chamber body in described darkroom; Be convenient to separate after the darkroom uses upper and lower chamber body.
Described darkroom also can be integral structure, is provided with live body in the side, darkroom and stretches into the hole.
The position of stretching into the hole near live body in the described darkroom is provided with the sealing gasket that is in the light; Can compress live body and shut out the light, make the darkroom light tight.
The present invention has following advantage and effect relative to prior art: (1) is because the darkroom of this LED quick detector for photosynthetic capacity of irradiation is designed to the less structure of being convenient to move of volume, and relevant electrical equipment has also adopted volume small construction form (to replace with single-chip microcomputer as traditional microcomputer, the CCD that volume is bigger or ICCD adopt that optical fiber and photomultiplier transit tube module replace etc.), so it is little that this detector has a volume, in light weight, conveniently moving, the advantage of good portability.(2) this equipment can be realized the inside and outside somatometry on the spot in family, has overcome existing checkout equipment and has detected the shortcoming of bringing the measurement data error because of exsomatizing, and makes the measurement result degree of accuracy better.(3) this detector carries and excites led light source, can fixedly excite light intensity to every group of measurement, has avoided the measurement data error brought owing to the instantaneous variation of light intensity in the traditional technique in measuring process, makes this equipment have stable, accurate, timesaving advantage.(4) this device structure is simple, reasonable, and easy to operate, cost is low, helps promoteing the wider application.
Description of drawings
Fig. 1 is the structural representation of quick detector for photosynthetic capacity of irradiation from light emitting diode of the present invention.
Fig. 2 is the structural representation in darkroom shown in Figure 1.
Fig. 3 is the block diagram that is electrically connected of quick detector for photosynthetic capacity of irradiation from light emitting diode of the present invention.
Fig. 4 is the electrical connection diagram of single-chip microcomputer shown in Figure 3 and A/D converter.
Fig. 5 is the electrical connection diagram of single-chip microcomputer shown in Figure 3 and photomultiplier transit tube module.
Fig. 6 is the electrical connection diagram of single-chip microcomputer shown in Figure 3 and led light source assembly.
Fig. 7 is the electrical connection diagram of single-chip microcomputer shown in Figure 3 and serial line interface.
Fig. 8 is the electrical connection diagram of A/D converter shown in Figure 3 and photomultiplier transit tube module.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing.
Fig. 1 shows concrete structure of the present invention, as seen from Figure 1, this LED quick detector for photosynthetic capacity of irradiation comprises darkroom 1, led light source J7, optical fiber 3, photomultiplier module J 4, A/D converter U6, single-chip microcomputer U1, input keyboard 5, display 4, serial line interface J2, led light source J7 is positioned at darkroom 1, optical fiber 3 one ends stretch in the darkroom 1, the other end is connected with photomultiplier module J 4, photomultiplier module J 4 is connected with single-chip microcomputer U1 by A/D converter U6, input keyboard 5, display 4 is connected with single-chip microcomputer U1 simultaneously, single-chip microcomputer U1 also is connected with serial line interface J2, by serial line interface J2 can with the computing machine communication.The structure in described darkroom 1 as shown in Figure 2, as seen from Figure 2, described darkroom 1 is upper and lower opposite opened structure, comprise chamber body 1-1, following chamber body 1-2, upper and lower chamber body 1-1,1-2 are connected by hinge 1-3, upper and lower chamber body 1-1,1-2 are provided with chimeric bulge loop 1-4 and groove 1-5 mutually, being connected of described bulge loop 1-4 and groove 1-5 can form dark chamber, also be provided with through hole face 1-6 at upper and lower chamber body 1-1,1-2 relative engagement face, two through hole face 1-6 relative engagement can form the through hole that is communicated with dark chamber by the external world, is convenient to the placement of live body 2; Upper and lower chamber body 1-1, the 1-2 in described darkroom 1 is provided with the sealing gasket (not shown) that is in the light in the position near the through hole face; Be mainly used in and compress live body and shut out the light, make dark chamber light tight; Be provided with fixedly bayonet socket 1-7 between upper and lower chamber body 1-1, the 1-2 in described darkroom 1, upper and lower chamber body 1-1,1-2 fixed after butt joint by the fixing connection of bayonet socket 1-7; Between upper and lower chamber body 1-1,1-2, also be provided with spring 1-8, easier upper and lower chamber body 1-1, the 1-2 of opening after being convenient to darkroom 1 and using.
Fig. 3～Fig. 8 shows the connecting structure for electrical equipment of this equipment, as seen from Figure 3, single-chip microcomputer U1 is electrically connected with led light source J7, A/D converter U6, photomultiplier module J 4, keyboard, display J6, interface J2 simultaneously, single-chip microcomputer U1 is connected with photomultiplier module J 4 by A/D converter U6 on the one hand, making photomultiplier module J 4 be delivered to single-chip microcomputer U1 after obtaining signal handles, also be connected with photomultiplier module J 4 on the other hand, with starting or stoping of control photomultiplier module J 4 by control interface (relay).Single-chip microcomputer U1 is connected as shown in Figure 4 with A/D converter U6's, be specially: single-chip microcomputer U1 finishes the collection of delayed fluorescence signal by four control pins (5,13,14,6) of P1 mouth signal wire (the 2nd, 3,4,5 pin) control A/D converter U6, and receive this data by data bus (32,33,34,35,36,37,38,39 pin of U1), finish the collection of delayed fluorescence signal.Single-chip microcomputer U1 is connected as shown in Figure 5 with photomultiplier module J 4, be specially: the P1 mouth signal wire (the 6th pin) of single-chip microcomputer U1 is through behind 6,7 pin of chip for driving 75451, the connection of pilot relay 946H-1C-5D normally opened contact (6) is that 1 pin of photomultiplier module J 4 links with+5VA, photomultiplier module J 4 startup work this moment.Single-chip microcomputer U1 is connected as shown in Figure 6 with led light source J7's, be specially: the P1 mouth signal wire (the 7th pin) of single-chip microcomputer U1 is through behind 1,2 pin of chip for driving 75451, the connection of pilot relay 946H-1C-5D normally opened contact (6) is that 1 pin of led light source J7 links with+12VA, and this moment, led light source J7 started work.Single-chip microcomputer U1 is connected as shown in Figure 7 with serial line interface J2's, be specially: behind 9,10 pin of the P3 mouth signal wire of single-chip microcomputer U1 (the 10th, 11 pin) through interface chip MAX202, link to each other with 2,3 pin of serial line interface J2, thereby can realize the communication of single-chip microcomputer and intercomputer.A/D converter U6 is connected as shown in Figure 8 with photomultiplier module J 4, be specially: be connected with 3,4 of photomultiplier module J 4 respectively by 9,10 of A/D converter U6, set up the transmission channel of delayed fluorescence signal from photomultiplier module J 4 to A/D converter U6, transmission course is realized by single-chip microcomputer U1 control.But each assembly type selecting is as follows: U1:AT89C52; U6:MAX1166; J4:MD-963; J2:RS-232.
Present embodiment except that following characteristics with embodiment 1: the upper and lower chamber body in described darkroom is for splitting separated structures fully, and its inner structure is with embodiment 1; When not using, upper and lower chamber body can be separated, when needs use, upper and lower chamber body be coincide and dock.
Present embodiment except that following characteristics with embodiment 1: described darkroom is an integral structure, be provided with live body in the side, darkroom and stretch into the hole, the position of stretching into the hole near live body in the darkroom is provided with the sealing gasket that is in the light, and can compress live body and shuts out the light, and makes the darkroom light tight.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1, a kind of LED quick detector for photosynthetic capacity of irradiation, comprise darkroom, excited by visible light assembly, weak light detection assembly, analog to digital converter, data handling component, excited by visible light assembly and weak light detection assembly are connected with the darkroom, the weak light detection assembly is connected with data handling component by analog to digital converter, it is characterized in that: described darkroom is set to be convenient to the structure that live body stretches into; Described excited by visible light assembly is a LED illumination part; Described weak light detection assembly comprises optical fiber, photomultiplier transit tube module, optical fiber one end stretches into the darkroom, the other end is connected with the photomultiplier transit tube module, described data handling component is a scm managing system, described scm managing system is connected with described photomultiplier transit tube module by analog to digital converter on the one hand, also is connected with the photomultiplier transit tube module by control interface on the other hand.
2, LED quick detector for photosynthetic capacity of irradiation according to claim 1, it is characterized in that: described darkroom is upper and lower opposite opened structure, comprise chamber body, following chamber body, upper and lower chamber body is connected by hinge or hinge, upper and lower chamber body is provided with chimeric bulge loop and groove mutually, being connected of described bulge loop and groove forms dark chamber, and body relative engagement face also is provided with the through hole face in upper and lower chamber, and two through hole face relative engagement forms the through hole that is communicated with dark chamber by the external world.
3, LED quick detector for photosynthetic capacity of irradiation according to claim 2 is characterized in that: the upper and lower chamber body in described darkroom is provided with the sealing gasket that is in the light in the position near the through hole face.
4, LED quick detector for photosynthetic capacity of irradiation according to claim 1 is characterized in that: the upper and lower chamber body in described darkroom is for splitting separated structures fully.
5, according to claim 2 or 4 described LED quick detector for photosynthetic capacity of irradiation, it is characterized in that: be provided with fixed sturcture between the upper and lower chamber body in described darkroom.
6, according to claim 2 or 4 described LED quick detector for photosynthetic capacity of irradiation, it is characterized in that: be provided with spring between the upper and lower chamber body in described darkroom.
7, LED quick detector for photosynthetic capacity of irradiation according to claim 1 is characterized in that: described darkroom also is integral structure, is provided with live body in the side, darkroom and stretches into the hole.
8, LED quick detector for photosynthetic capacity of irradiation according to claim 7 is characterized in that: the position of stretching into the hole near live body in the described darkroom is provided with the sealing gasket that is in the light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100341613A CN100447568C (en) | 2005-04-19 | 2005-04-19 | Quick detector for photosynthetic capacity of irradiation from light emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100341613A CN100447568C (en) | 2005-04-19 | 2005-04-19 | Quick detector for photosynthetic capacity of irradiation from light emitting diode |
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| Publication Number | Publication Date |
|---|---|
| CN1687772A true CN1687772A (en) | 2005-10-26 |
| CN100447568C CN100447568C (en) | 2008-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100341613A Expired - Fee Related CN100447568C (en) | 2005-04-19 | 2005-04-19 | Quick detector for photosynthetic capacity of irradiation from light emitting diode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234916A (en) * | 2013-04-06 | 2013-08-07 | 吉林大学 | Prediction method for net photosynthetic rate of population |
| CN103954562A (en) * | 2014-04-09 | 2014-07-30 | 福建农林大学 | Photosynthesis machine based on optical fiber sensor |
| CN107560830A (en) * | 2017-08-25 | 2018-01-09 | 北方夜视技术股份有限公司 | Large area microchannel template photomultiplier test device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5130545A (en) * | 1991-04-05 | 1992-07-14 | Lussier Robert R | Video imaging plant management system |
| US6649417B2 (en) * | 2000-08-21 | 2003-11-18 | Ut-Battelle, Llc | Tissue-based standoff biosensors for detecting chemical warfare agents |
| CN1168973C (en) * | 2002-06-18 | 2004-09-29 | 华南师范大学 | Method and device for quickly measuring photosynthesizing speed of delay light generated by visiblelight inducing |
-
2005
- 2005-04-19 CN CNB2005100341613A patent/CN100447568C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234916A (en) * | 2013-04-06 | 2013-08-07 | 吉林大学 | Prediction method for net photosynthetic rate of population |
| CN103234916B (en) * | 2013-04-06 | 2015-03-18 | 吉林大学 | Prediction method for net photosynthetic rate of population |
| CN103954562A (en) * | 2014-04-09 | 2014-07-30 | 福建农林大学 | Photosynthesis machine based on optical fiber sensor |
| CN107560830A (en) * | 2017-08-25 | 2018-01-09 | 北方夜视技术股份有限公司 | Large area microchannel template photomultiplier test device |
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| CN100447568C (en) | 2008-12-31 |
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Granted publication date: 20081231 Termination date: 20120419 |