CN2844918Y - The photosynthesis measurement instrument - Google Patents
The photosynthesis measurement instrument Download PDFInfo
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- CN2844918Y CN2844918Y CN 200620082370 CN200620082370U CN2844918Y CN 2844918 Y CN2844918 Y CN 2844918Y CN 200620082370 CN200620082370 CN 200620082370 CN 200620082370 U CN200620082370 U CN 200620082370U CN 2844918 Y CN2844918 Y CN 2844918Y
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Abstract
The photosynthesis measurement instrument belongs to plant physiology vital measuring instrument field.Comprise power supply, CPU control module, detecting unit, analog to digital converter and display unit, power supply connects CPU control module, detecting unit, analog to digital converter and display unit, detecting unit connection mode number converter, analog to digital converter connects the CPU control module, the CPU control module connects display unit, and its detecting unit is provided with temperature sensor, optical sensor, carbon dioxide sensor and oxygen sensor and links to each other with analog to digital converter respectively.Compared with prior art, have and can measure plant photosynthetic efficiency under the environmental baseline of different gas concentration lwevels, intensity of illumination and humiture easily, fast and accurately, structure is light and handy, is easy to carry.
Description
Technical field
The utility model relates to a kind of photosynthesis measurement instrument, belongs to plant physiology vital measuring instrument field.
Background technology
Photosynthesis is the basis that green plants grows.The photosynthesis of green plants is the material base of nature heterotroph life, and human existence and development are inseparable especially with the photosynthesis of green plants.The mensuration of photosynthetic efficiency is the important indicator of agricultural, gardening, the seed selection of vegetables high-yield variety.
In the photosynthesis of plant process, absorbing carbon dioxide and water from environment generate carbohydrates, discharge oxygen simultaneously, in this course of reaction, the gas concentration lwevel in the environment, intensity of illumination are the principal elements that influences plant leaf blade photosynthetic efficiency height, secondly are the temperature and humidities in the environment.Traditional photosynthesis of plant assay method mainly contains two kinds: the one, and the improvement half leaf method, this method troublesome poeration, experimental error is bigger, is not suitable for laboratory study; The 2nd, infrared CO
2Analytic approach, this method can only be measured the indoor within a certain period of time photosynthetic efficiency of excised leaf, and be bigger with land for growing field crops blade actual photosynthesis efficient error.Do not find as yet at present and can measure fast, accurately through " Chinese patent ", under the certain environment condition, the instrument of the burst size of oxygen under the amount of absorbing carbon dioxide and the same environmental baseline in plant leaf blade unit area, unit interval.
The utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: a kind of photosynthesis measurement instrument that can fast, accurately measure a certain plant photosynthetic efficiency under the environmental baseline of different gas concentration lwevels, intensity of illumination and humiture is provided.
The technical scheme that its technical matters that solves the utility model adopts is: the photosynthesis measurement instrument, form by power supply, CPU control module, detecting unit, analog to digital converter and display unit, power supply connects CPU control module, detecting unit, analog to digital converter and display unit, detecting unit connection mode number converter, analog to digital converter connects the CPU control module, the CPU control module connects display unit, and its detecting unit is provided with temperature sensor, optical sensor, carbon dioxide sensor and oxygen sensor and links to each other with analog to digital converter respectively.The temperature sensor of detecting unit, optical sensor, carbon dioxide sensor and oxygen sensor are obtained the environmental variance signal and are transported to analog to digital converter, the digital signal that analog to digital converter can be discerned conversion of signals for the CPU control module, the CPU control module carries out after the analyzing and processing result being transported to display unit to digital signal.
The CPU control module comprises single-chip microcomputer and house dog, and single-chip microcomputer links to each other with house dog, analog to digital converter, display unit respectively
Connect.House dog guarantees the operate as normal of single-chip microcomputer, and single-chip microcomputer calculates current temperature value, illumination intensity value, gas concentration lwevel value and oxygen density value according to the digital signal of analog to digital converter output, and on display unit these numerical value is shown.
Power supply comprises accumulator U5, voltage stabilizer U3 and voltage stabilizing diode Z1.
Compared with prior art, the beneficial effect that the utility model photosynthesis measurement instrument is had is: by temperature sensor is set at detecting unit, optical sensor, carbon dioxide sensor links to each other with analog to digital converter respectively with oxygen sensor, environmental baseline Current Temperatures with determination object, intensity of illumination, gas concentration lwevel and oxygen concentration are converted into electric signal, the digital signal that analog to digital converter can be discerned electrical signal conversion for the CPU control module, the CPU control module carries out the result being transported to display unit after the analyzing and processing and on display unit these numerical value being shown to digital signal.Can measure plant photosynthetic efficiency under the environmental baseline of different gas concentration lwevels, intensity of illumination and humiture easily, fast and accurately, structure is light and handy, is easy to carry.
Description of drawings
Fig. 1 is a principle of work block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model;
Fig. 1-2 is the most preferred embodiment of the utility model photosynthesis measurement instrument, in Fig. 1-2: R1-R21 resistance C1-C17 electric capacity D1-D4 diode L1-L6 light emitting diode Z1 voltage stabilizing diode Q1-Q7 triode Y1, Y2 crystal oscillator LED1, LED2 charactron PR1 exclusion U1 analog to digital converter U2 house dog U3 voltage stabilizer U4 single-chip microcomputer U5 accumulator U6 temperature sensor U7 oxygen sensor U8 optical sensor U9 carbon dioxide sensor.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, power supply provides operating voltage for detecting unit, CPU control module, analog to digital converter and display unit.Temperature sensor in the detecting unit, optical sensor, carbon dioxide sensor and oxygen sensor are with the signal input analog-to-digital converter of measuring.The digital signal that analog to digital converter can be discerned conversion of signals for the CPU control module also is transported to the CPU control module.The CPU control module carries out after the analyzing and processing result being transported to display unit to digital signal.
As shown in Figure 2, circuit theory diagrams of the present utility model.Power supply comprises accumulator U5, voltage stabilizer U3 and voltage stabilizing diode Z1.The positive pole of accumulator U5 links to each other with 1 pin of voltage stabilizer U3, and links to each other with the negative pole of voltage stabilizing diode Z1 by resistance R 21; The negative pole of accumulator U5 links to each other with 2 pin of voltage stabilizer U3, links to each other with the positive pole of voltage stabilizing diode Z1 simultaneously.Connect capacitor C 8, C7 between the both positive and negative polarity of accumulator U5.3 pin of voltage stabilizer U3 meet VCC, and the 2 pin ground connection of voltage stabilizer U3 connect capacitor C 5, C6 between 3 pin and 2 pin.
Detecting unit comprises temperature sensor U6, oxygen sensor U7, intensity of illumination sensor U8 and carbon dioxide sensor U9.Temperature sensor U6 connects 11 pin of analog to digital converter U1, and the wave filter ground connection by being made up of resistance R 17, capacitor C 14.Oxygen sensor U7 connects 12 pin of analog to digital converter U1, and the wave filter ground connection by being made up of resistance R 18, capacitor C 15.Intensity of illumination sensor U8 connects 17 pin of analog to digital converter U1, and the wave filter ground connection by being made up of resistance R 19, capacitor C 16.Carbon dioxide sensor U9 connects 18 pin of analog to digital converter U1, and the wave filter ground connection by being made up of resistance R 20, capacitor C 17.
11 pin of analog to digital converter U1,12 pin, 17 pin and 18 pin meet VCC by diode D1-D4 respectively.1 pin of analog to digital converter U1,6 pin, 7 pin and 21 pin meet VCC, 2 pin, 8 pin, 10 pin, 19 pin, 20 pin, 22 pin and 28 pin ground connection, connect capacitor C 12 between 1 pin and 2 pin, meet crystal oscillator Y2 between 3 pin and 4 pin, and by capacitor C 10, C11 ground connection, 5 pin meet VCC by capacitor C 9 ground connection with by resistance R 16, and 9 pin meet reference power supply+5V, and by capacitor C 13 ground connection.
The CPU control module comprises single-chip microcomputer U4 and house dog U2.The 1-4 pin of single-chip microcomputer U4 links to each other with the 23-27 pin of analog converter U1 respectively with 12 pin, 31 pin meet VCC, 18 pin and 19 pin are connected to crystal oscillator Y1, and by capacitor C 1, C2 ground connection, the 32-39 pin links to each other with the 9-2 pin of exclusion PR1 respectively, and the 32-39 pin also is connected with resistance R 15-R8 respectively, and 9 pin connect 7 pin of house dog U2,11 pin connect 6 pin of house dog U2, and the 21-27 pin connects resistance R 1-R7 respectively.2 pin, 4 pin of house dog U2 meet VCC, and and 3 pin between be connected to capacitor C 3, C4,3 pin ground connection, 1 pin links to each other with 8 pin.
Display unit comprises light emitting diode L1-L6, charactron LED1, LED2.11 pin of charactron LED1 and charactron LED2,7 pin, 4 pin, 2 pin, 1 pin, 10 pin, 5 pin, 3 pin correspondence respectively link together, and connect resistance R 8-R15 respectively, wherein 11 pin, 10 pin, 7 pin, 5 pin, 4 pin, 2 pin are connected to the negative pole of light emitting diode L1-L6.The base stage of triode Q1-Q7 links to each other with resistance R 1-R7 respectively, and emitter connects VCC respectively.Triode Q1-Q6 collector connects 8 pin, 9 pin, 12 pin of 8 pin, 9 pin, 12 pin and the charactron LED2 of charactron LED1 respectively.The positive pole of light emitting diode L1-L6 connects together, and the collector with triode Q7 links to each other then.
Charactron LED1, LED2 adopt 6 0.5LED display screens, and light emitting diode L1-L6 is from indicating VCC power supply status, temperature sensor, oxygen sensor, carbon dioxide sensor, optical sensor and analyzer duty respectively.
Temperature sensor U6, oxygen sensor U7, optical sensor U8, carbon dioxide sensor U9 are connected with Analog to Digital Converter U1, as processing enter, realize friendly man-machine interface by display unit by single-chip microcomputer U4.When program run makes mistakes, can in time repair mistake by house dog U2.
Temperature sensor U6, oxygen sensor U7, carbon dioxide sensor U9, optical sensor U8 are correctly connected, after analyzer powers up, VCC power supply indication diode is bright, represents that whole device power supply is normal, the flicker of duty indication diode, the indication device operation is normal, when normal operating condition, display unit is the current measured value of displays temperature, oxygen, carbon dioxide and illumination successively, and lights corresponding light emitting diode, each measured value showed for two seconds, and circulation shows.
Principle of work is: the power supply that accumulator U5 provides provides+5V voltage after VCC voltage and process voltage stabilizing diode Z1 are provided after filtering and the voltage stabilizer U3 voltage stabilizing respectively.Temperature sensor U6, oxygen sensor U7, intensity of illumination sensor U8 and carbon dioxide sensor U9 detect the environmental variance signal, are transported to analog to digital converter U1 through after the filtering.The digital signal that analog to digital converter U1 can discern conversion of signals for single-chip microcomputer U4.Single-chip microcomputer U4 carries out analyzing and processing to digital signal, when program run makes mistakes, can in time repair mistake by house dog U2.Single-chip microcomputer U4 drives charactron LED1, LED2 and light emitting diode L1-L6 by resistance R 1-R15 and triode Q1-Q7, and the result is exported demonstration.
Claims (4)
1, photosynthesis measurement instrument, it is characterized in that: comprise power supply, CPU control module, detecting unit, analog to digital converter and display unit, power supply connects CPU control module, detecting unit, analog to digital converter and display unit, detecting unit connection mode number converter, analog to digital converter connects the CPU control module, the CPU control module connects display unit, and its detecting unit is provided with temperature sensor, optical sensor, carbon dioxide sensor and oxygen sensor and links to each other with analog to digital converter respectively.
2, photosynthesis measurement instrument according to claim 1, it is characterized in that: the CPU control module comprises single-chip microcomputer and house dog, single-chip microcomputer is connected with house dog, analog to digital converter, display unit respectively.
3, photosynthesis measurement instrument according to claim 1 is characterized in that: power supply comprises accumulator U5, voltage stabilizer U3 and voltage stabilizing diode Z1.
4, photosynthesis measurement instrument according to claim 1, it is characterized in that: detecting unit comprises temperature sensor U6, oxygen sensor U7, intensity of illumination sensor U8 and carbon dioxide sensor U9, temperature sensor U6 connects 11 pin of analog to digital converter U1, and pass through by resistance R 17, the wave filter ground connection that capacitor C 14 is formed, oxygen sensor U7 connects 12 pin of analog to digital converter U1, and pass through by resistance R 18, the wave filter ground connection that capacitor C 15 is formed, intensity of illumination sensor U8 connects 17 pin of analog to digital converter U1, and pass through by resistance R 19, the wave filter ground connection that capacitor C 16 is formed, carbon dioxide sensor U9 connects 18 pin of analog to digital converter U1, and passes through by resistance R 20, the wave filter ground connection that capacitor C 17 is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082370 CN2844918Y (en) | 2006-03-22 | 2006-03-22 | The photosynthesis measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082370 CN2844918Y (en) | 2006-03-22 | 2006-03-22 | The photosynthesis measurement instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844918Y true CN2844918Y (en) | 2006-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620082370 Expired - Fee Related CN2844918Y (en) | 2006-03-22 | 2006-03-22 | The photosynthesis measurement instrument |
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| Country | Link |
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| CN (1) | CN2844918Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313791A (en) * | 2011-07-25 | 2012-01-11 | 南京信息工程大学 | Plant physiological effect indicator |
| CN103954562A (en) * | 2014-04-09 | 2014-07-30 | 福建农林大学 | Photosynthesis machine based on optical fiber sensor |
| CN107593188A (en) * | 2017-09-26 | 2018-01-19 | 上海应用技术大学 | A kind of greenhouse production greenery vegetables plant CO2Feed method for determination of amount |
-
2006
- 2006-03-22 CN CN 200620082370 patent/CN2844918Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313791A (en) * | 2011-07-25 | 2012-01-11 | 南京信息工程大学 | Plant physiological effect indicator |
| CN103954562A (en) * | 2014-04-09 | 2014-07-30 | 福建农林大学 | Photosynthesis machine based on optical fiber sensor |
| CN107593188A (en) * | 2017-09-26 | 2018-01-19 | 上海应用技术大学 | A kind of greenhouse production greenery vegetables plant CO2Feed method for determination of amount |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |