CN108398116A - A kind of plant blade area measuring apparatus based on solar photocell - Google Patents
A kind of plant blade area measuring apparatus based on solar photocell Download PDFInfo
- Publication number
- CN108398116A CN108398116A CN201810107195.8A CN201810107195A CN108398116A CN 108398116 A CN108398116 A CN 108398116A CN 201810107195 A CN201810107195 A CN 201810107195A CN 108398116 A CN108398116 A CN 108398116A
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- Prior art keywords
- blade area
- solar photocell
- measuring apparatus
- detection
- plant blade
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/28—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring areas
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
A kind of plant blade area measuring apparatus based on solar photocell, specific technical solution are：Core is connected the liquid crystal display for showing detection information by I/O pins, passes through I/O pin connecting detection control buttons one microcontroller by the A/D converter of I/O pins connection reading blade area detection data in order to control.One piece of power supply solar photocell is powered by regulator circuit for entire plant blade area measuring apparatus, one piece of detection solar photocell and a transparent cover plate constitute blade area sensing unit, the voltage of sensing unit output connects a bleeder circuit, and the output voltage of bleeder circuit is input to microcontroller by A/D converter and carries out areal calculation.Beneficial effects of the present invention：Without external power supply or accumulator, the measurement of plant blade area is can be carried out under outdoor natural light irradiation on daytime, structure and principle are simple, carry and easy to use, are suitble to the on-line measurement in field.
Description
Technical field
The present invention relates to a kind of plant blade area measuring apparatus devices, and in particular to a kind of plant based on solar photocell
Blade area measuring apparatus device.
Background technology
Important indicator of the plant blade area as research vegetation growth state, hereditary capacity, cultivation effect etc., extensively
It is general to be applied in agri-scientific research and production.The measurement of plant blade area may be used is weighed based on artificial gridding method, punching
Method, cut paper weighing method may be based on dedicated plant blade area measuring apparatus.The former is time-consuming and laborious, cumbersome and error compared with
Greatly；The latter's high certainty of measurement, but expensive, not Portable belt.Therefore occur numerous about plant blade area measuring apparatus
The patent of device or device：A kind of plant leaf area measuring instruments of CN201611064809.6, a kind of live bodies of CN200910265908.4
Blade area tester, a kind of photoelectric smoke leaf area measurement device of CN201510408345.5, CN20171034164.5 are a kind of
Leaf area measurement method, a kind of leaf area measurement methods of CN201611031043.1 and CN201510522019.7 one kind being based on figure
As the method for measuring leaf area etc. of processing.Above-mentioned patent respectively has feature, but common operational version is all to need external electricity
Source is instrument power supply with accumulator.
Invention content
The present invention provides a kind of plant blade area measuring apparatus based on solar photocell, utilize solar photocell
It powers for entire instrument as the sensing unit of blade area, while using solar photocell.
The technical solution adopted in the present invention is：Control core of one microcontroller as plant blade area measuring apparatus
The heart, microcontroller connect the detection data that 1 A/D converter reads blade area by I/O pins, and microcontroller passes through I/O
Pin connects a liquid crystal display and is used for vision-control information and detection information, and microcontroller connects 1 by I/O pins and presses
Key is controlled for detecting.The solar photocell of one piece of power supply is measured by a regulator circuit for entire plant blade area
Instrument is powered, the break-make of a power switch control power supply.The solar photocell and a transparent cover plate composition of one piece of detection
The voltage of the sensing unit of blade area, sensing unit output connects an adjustable partial pressure potential device, partial pressure potential device
Output voltage is converted to digital quantity by A/D converter and is input to microcontroller progress areal calculation.
Beneficial effects of the present invention are：Without external power supply or accumulator, under outdoor natural light irradiation on daytime
The measurement of plant blade area is carried out, structure and principle are simple, carry and easy to use, are suitble to the on-line measurement in field.
Description of the drawings
Fig. 1 is the circuit structure block diagram of plant blade area measuring apparatus.
Fig. 2 is the circuit diagram of plant blade area measuring apparatus.
Fig. 3 is the surface structure schematic diagram of plant blade area measuring apparatus.
In figure, 1. power supply solar photocells, 2. regulator circuits, 3. A/D converters, 4. liquid crystal displays, 5. is micro-
Controller, 6. bleeder circuits, 7. detection solar photocells, 8. detection control buttons, 9. power switches, 10. partial pressure potentials
Device adjusting knob, 11. transparent cover plates.
Specific implementation mode
Fig. 1 is the circuit structure block diagram of plant blade area measuring apparatus.Power supply is shone with solar photocell 1 in outdoor light
The voltage for penetrating lower generation passes through 2 voltage stabilizing of regulator circuit, is the power supply of plant blade area measuring apparatus.Detection solar photocell
7 voltages generated under the irradiation of outdoor light are divided by bleeder circuit 6, and input a/d converter 3 is converted to digital quantity.Micro-control
Device 5 processed reads the digital quantity of A/D converter 3, calculates blade area and is shown in liquid crystal display 4.
Fig. 2 is the circuit diagram of plant blade area measuring apparatus.Wherein, the model of power supply solar photocell 1
TJ-0200, regulator circuit 2 use LM7805 circuit of three-terminal voltage-stabilizing integrated, A/D converter 3 to use ADC0809, liquid crystal display 4
Using LCD1602, microcontroller 5 is using the STC89C52RC of 51 series, and bleeder circuit 6 is by 3590S-2-103L partial pressure potential devices
It is in series with 5K resistance, the model YL-10P-17b of detection solar photocell 7.
Power supply generates 9V voltages with solar photocell 1 under outdoor natural light irradiation, uses power supply by regulator circuit 2
The voltage stabilization of the output of solar photocell 1 is 5V, is the power supply of plant blade area measuring apparatus.Power switch 9 is for controlling
The break-make of the power supply of system.
Detection generates 12V voltages with solar photocell 7 under outdoor natural light irradiation, is examined by bleeder circuit 6
Survey the channels IN0 that voltage is transferred to A/D converter 3.Channel selecting pin A, B and C of A/D converter 3 are directly grounded fixed choosing
The channels IN0 are selected to be converted.The P3.0-P3.3 pins of microcontroller 5 be separately connected START, ALE of A/D converter, EOC,
OUTPT ENABLE and CLK pin are converted and are read for controlling, the P1.0-P1.7 connections A/D converter 3 of microcontroller 5
Digital quantity pin D0-D7 is used to read the digital quantity of conversion, the data of the P2.0-P2.7 connections liquid crystal display 4 of microcontroller 5
Pin D0-D7 transmission shows information, control terminal RS, R/W and E of the P0.0-P0.2 connections liquid crystal display 4 of microcontroller 5.Inspection
It surveys control button 8 with microcontroller P0.3 to be connected, the acquisition for a reference value stores.
Fig. 3 is the surface structure schematic diagram of plant blade area measuring apparatus.Partial pressure potential device adjusting knob 10 is used for not
With the detection voltage for obtaining standard under the conditions of illumination, transparent cover plate 11 is for flattening tested blade.
The application method of plant blade area measuring apparatus is：The first step obtains the reference voltage under live lighting condition.
The no blade and under conditions of covering transparent cover plate 11 above of detection solar photocell 7, passes through and adjusts partial pressure potential device
Adjusting knob 10 observes the detection voltage show value of liquid crystal display 4, at the scene so that detection voltage show value under lighting condition
5V is progressivelyed reach from less than 5V, here it is vaneless reference voltages under lighting condition at the scene.Then detection control button is pressed
8, so that vaneless reference voltage is preserved.Second step, leaf area measure.It is placed above in detection solar photocell 7 tested
Blade and transparent cover plate 11 is covered, the vaned detection voltage value and program that observation liquid crystal display 4 is shown are according to nothing
The blade face product value that the reference voltage of blade and vaned detection voltage are calculated.The operation of second step can repeat arbitrary more
It is secondary, carry out the measurement of multiple blades.
It is exactly this by detection control button 8 according to above-mentioned testing principle it is found that if during second step operates
The detection voltage value of blade is preserved as reference voltage.Then the second step operation of another blade, liquid crystal display 4 are carried out
Show value is exactly the area difference of two blades.
The above parameter description is only used for explaining the present invention, not the limitation present invention.The microcontroller of many models can
The STC89C52RC microcontrollers used in the present invention are substituted, the regulator circuit of many models can substitute in regulator circuit 2
LM7805 models integrated regulator, the A/D converter of many models can substitute used in the present invention
The display device of ADC0809A/D converters, many models can substitute LCD1602 liquid crystal displays, the current potential of many models
Device can substitute the 3590S-2-103L partial pressure potential devices in bleeder circuit, and the solar photocell of many models can replace
For YL-10P-17b detections solar photocell and TJ-0200 power supply solar photocells.Microcontroller STC89C52RC
Other I/O mouthfuls I/O mouths used in the present invention can be replaced to connect A/D converter and liquid crystal display.A/D converter 0809 has 8
A analog input channel, other any input channels all the way can substitute the IN0 input channels used in the present invention.
Claims (3)
1. a kind of plant blade area measuring apparatus based on solar photocell, including：Microcontroller, power supply solar photoelectric
Pond, regulator circuit, detection solar photocell, transparent cover plate, bleeder circuit, partial pressure potential device adjusting knob, detection control
Button and A/D converter, it is characterised in that：Microcontroller by I/O pins connect A/D converter, liquid crystal display and
Control button is detected, one piece of power supply solar photocell is powered by regulator circuit for entire plant blade area measuring apparatus,
One piece of detection solar photocell and a transparent cover plate constitute blade area sensing unit, and the voltage of sensing unit output connects
Bleeder circuit is connect, the output voltage of bleeder circuit is input to microcontroller by A/D converter and carries out areal calculation.
2. the plant blade area measuring apparatus according to claim 1 based on solar photocell, it is characterised in that：Detection
The output voltage of solar photocell connects bleeder circuit, and the partial pressure potential device in bleeder circuit passes through partial pressure potential device tune
The adjusting of section knob obtains required detection reference voltage under different illumination conditions.
3. the plant blade area measuring apparatus according to claim 1 based on solar photocell, it is characterised in that：Micro-control
Device processed connects the detection control button for preserving detection reference voltage by I/O pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810107195.8A CN108398116A (en) | 2018-02-02 | 2018-02-02 | A kind of plant blade area measuring apparatus based on solar photocell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810107195.8A CN108398116A (en) | 2018-02-02 | 2018-02-02 | A kind of plant blade area measuring apparatus based on solar photocell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108398116A true CN108398116A (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810107195.8A Pending CN108398116A (en) | 2018-02-02 | 2018-02-02 | A kind of plant blade area measuring apparatus based on solar photocell |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713641A (en) * | 2009-10-09 | 2010-05-26 | 山西农业大学 | Digital graphic technology-based method and device for analyzing leaf area |
| CN102538717A (en) * | 2010-12-30 | 2012-07-04 | 北京师范大学 | Automatic leaf area index observation system and method |
| CN203772211U (en) * | 2014-04-04 | 2014-08-13 | 哈尔滨市光学仪器厂 | A photoelectron area measuring instrument |
| CN204214411U (en) * | 2014-12-05 | 2015-03-18 | 中国农业科学院农业信息研究所 | A kind of energy-saving plant blade area measuring equipment |
| CN204666106U (en) * | 2015-06-16 | 2015-09-23 | 中国农业科学院农业资源与农业区划研究所 | A kind of Crop leaf area Index Monitoring system |
| CN105004284A (en) * | 2015-07-14 | 2015-10-28 | 河南科技大学 | Photoelectric tobacco leaf area measuring device |
| CN205482838U (en) * | 2016-03-22 | 2016-08-17 | 甘肃农业大学 | Portable wheat blade area survey device |
| CN208125118U (en) * | 2018-02-02 | 2018-11-20 | 河北农业大学 | A kind of plant blade area measuring apparatus based on solar photocell |
-
2018
- 2018-02-02 CN CN201810107195.8A patent/CN108398116A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713641A (en) * | 2009-10-09 | 2010-05-26 | 山西农业大学 | Digital graphic technology-based method and device for analyzing leaf area |
| CN102538717A (en) * | 2010-12-30 | 2012-07-04 | 北京师范大学 | Automatic leaf area index observation system and method |
| CN203772211U (en) * | 2014-04-04 | 2014-08-13 | 哈尔滨市光学仪器厂 | A photoelectron area measuring instrument |
| CN204214411U (en) * | 2014-12-05 | 2015-03-18 | 中国农业科学院农业信息研究所 | A kind of energy-saving plant blade area measuring equipment |
| CN204666106U (en) * | 2015-06-16 | 2015-09-23 | 中国农业科学院农业资源与农业区划研究所 | A kind of Crop leaf area Index Monitoring system |
| CN105004284A (en) * | 2015-07-14 | 2015-10-28 | 河南科技大学 | Photoelectric tobacco leaf area measuring device |
| CN205482838U (en) * | 2016-03-22 | 2016-08-17 | 甘肃农业大学 | Portable wheat blade area survey device |
| CN208125118U (en) * | 2018-02-02 | 2018-11-20 | 河北农业大学 | A kind of plant blade area measuring apparatus based on solar photocell |
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Application publication date: 20180814 |