CN206399379U - A kind of embedded plant leaf area measurement apparatus - Google Patents
A kind of embedded plant leaf area measurement apparatus Download PDFInfo
- Publication number
- CN206399379U CN206399379U CN201621284969.7U CN201621284969U CN206399379U CN 206399379 U CN206399379 U CN 206399379U CN 201621284969 U CN201621284969 U CN 201621284969U CN 206399379 U CN206399379 U CN 206399379U
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- module
- measurement apparatus
- leaf area
- blade
- plant leaf
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Abstract
The utility model discloses a kind of embedded plant leaf area measurement apparatus, including image capture module, data processing module, data memory module and display module, described image acquisition module is connected with the data processing module, for measuring blade transverse width, the data processing module is also associated with FLASH memory and liquid crystal display, the blade information that the liquid crystal display is used to gather described image acquisition module shows that the FLASH memory is used to the blade information carrying out storage preservation in real time.The present apparatus can realize offline operation, play FPGA parallel processing capability, pass through image capture module and data processing module, realize High-speed Image Acquisition and processing, the application programs such as blade face integration method are completed with software mode, Hardware/Software Collaborative Design is realized, the leaf area measurement that the device is used for excised leaf is reliable and stable, blade other specification can be measured, system flexibility is strong.
Description
【Technical field】
The utility model belongs to Digital Agriculture technical field, and in particular to a kind of embedded plant leaf area measurement dress.
【Background technology】
Leaf area is the index commonly used in some arable farmings and breeding practice, and the gross area of blade is also the production of crops
The evaluation index of amount and quality, the size of leaf area is in the important research of afforestation operation, ideotype seed selection and the density of plantation
Hold, it is also the loss of research pest damage, the important content of economic threshold to determine insect food leaf area.It can be seen that fast and accurately surveying
Measure leaf area extremely important.
At present, conventional leaf area measurement mainly has gridding method, weight method, Y-factor method Y, image treating, blade face instrument mensuration
Deng.These methods cut both ways, and such as Box junction method is more accurate, but needs to consume the substantial amounts of time；Though leaf area instrumental method
The characteristics of so having quick, but expensive equipment and measurement result has larger fluctuation；Duplicating rule of weighing is by paper and again
The influence of print machine is larger；When scanner measures leaf area, blade need to be taken off, and be unsuitable for outdoor work.Said determination side
Method is generally used in combination in production application with ruler method, and needs to be multiplied by a correction coefficient during using ruler method, and corrects
Coefficient is influenceed larger by factors such as the kind of crop, leaf age and environment, and the scope of application is narrower；Regression equation method：I.e. by surveying
Leaf width and leaf length predict leaf area；It can in addition contain obtain the area of blade by calculating the pixel count of image Leaf, but
It is that this method needs to carry out the sampling of blade under strict object distance when measuring blade area, to ensure each pixel generation
The true area of table is constant, and requires that the linearity of optics is higher, and the focal length of camera lens is immutable, it is seen that with the method come
Realize that leaf area calculates the requirement needed higher.
【Utility model content】
Technical problem to be solved in the utility model is for above-mentioned of the prior art not enough embedded there is provided one kind
Formula plant leaf area measurement apparatus, leaf area and other specification that can be fast and accurately to blade be measured.
The utility model uses following technical scheme：
A kind of embedded plant leaf area measurement apparatus, including image capture module, data processing module, data storage mould
Block and display module, described image acquisition module are connected with the data processing module, described for measuring blade transverse width
Data processing module is also associated with FLASH memory and liquid crystal display, and the liquid crystal display is used to gather described image
The blade information of module collection shows that the FLASH memory is used to the blade information carrying out storage preservation in real time.
Further, described image acquisition module adopts module, LED light source array, phototriode array including FPGA numbers
And solid-state relay, the FPGA numbers adopt module and are electrically connected successively with the phototriode array and solid-state relay group, institute
Stating LED light source array is used to provide light source for the measurement apparatus.
Further, the LED light source array is detachable.
Further, the phototriode array and solid-state relay group include three groups respectively, are respectively used to described
FPGA numbers adopt module and transmit the blade information.
Further, the FPGA numbers adopt module for EP2C70F896C6.
Further, the data processing module is II 32 RISC embedded software core processor processors of Nios, connection
There is membrane keyboard.
Further, display module is the liquid crystal display of dot matrix type.
Further, USB/ serial communication interfaces are additionally provided with the measurement apparatus, for by the blade of measurement
Information data passes to host computer, and real-time data transmission is completed with host computer.
Further, the measurement apparatus is connected with AC voltage-stabilizing electricity by inductance capacitance, for for the measurement apparatus
Power supply.
Compared with prior art, the utility model at least has the advantages that：
The present apparatus can realize offline operation, play FPGA parallel processing capability, pass through image capture module and data
Processing module, realizes High-speed Image Acquisition and processing, completes the application programs such as blade face integration method with software mode, realizes software and hardware
Collaborative design, the leaf area measurement that the device is used for excised leaf is reliable and stable, can measure blade other specification, system is flexible
Property is strong.
Further, switch of three groups of solid-state relays to control LED/light source group, completes the timing transmission of data, Gu
The use of state relay can reduce the occupancy of FPGA resource, reduce inter alia I/O mouthfuls of usage quantity, by the fortune of system
Scanning frequency rate improves one times.And cost is saved, improve the cost performance of the device.
Further, the alternating current that the present apparatus is powered is handled by voltage stabilizing, makes Network Voltage Stability, and in exchange end electricity consumption
Electrification capacitor filter, removes high frequency, low-frequency disturbance pulse, improves reliability, reduces fault rate.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
【Brief description of the drawings】
Fig. 1 is the utility model system block diagram；
Fig. 2 is the utility model data acquisition module schematic diagram.
【Embodiment】
Refer to shown in Fig. 1, a kind of embedded plant leaf area measurement apparatus, including image capture module, data processing
Module, data memory module and display module, described image acquisition module are connected with the data processing module, for blade
The measurement of transverse width, the data processing module is also associated with FLASH memory and liquid crystal display, the liquid crystal display
Blade information for described image acquisition module to be gathered shows that the FLASH memory is used to believe in the blade in real time
Breath carries out storage preservation.Described image acquisition module including FPGA numbers adopt module, LED light source array, phototriode array and
Solid-state relay, the FPGA numbers are adopted module and electrically connected successively with the phototriode array and solid-state relay group, described
LED light source array is used to provide light source for the measurement apparatus.
Desk-top leaf area measuring instrument be based on photo electric scanning, via FPGA for main devices image capture module and by
After single-chip microcomputer is the data processing module of main devices, the real-time display that LCD completes measurement result is as a result sent into.While blade
The parameters such as length-width ratio, Breadth Maximum, the gross area, average area, worm channel area and blade shape can be corresponding by selection
Button is shown on LCD, and can pass data to host computer by serial ports or USB interface, and partial data is entered
Row storage.
The principle of desk-top blade face instrument measurement is similar to the integral principle in mathematics, is that whole blade surface is divided into several
Small rectangle, by calculating each rectangular area, then small rectangular area is carried out cumulative approximately to obtain whole
The area of individual blade.Instrument needs the amount of actual measurement to be each small rectangular length and width, is referred to as longitudinal direction measurement and horizontal
To measurement.
The measurement of longitudinal direction is controlled by the rotation of alternating current generator.Horizontal LED/light source group flashes once per 500ms,
The collection and processing of a data are completed per 500ms.By the revolution of alternating current generator, stepper motor is calculated in 500ms
Between the distance that rotates in section, be also just not difficult to draw the distance that blade is longitudinally walked within the period of each measurement.By calculating
The external interrupt control 500ms of machine period, so as to ensure that the accuracy of longitudinal direction measurement.
Refer to shown in Fig. 2, data acquisition module laterally quantifies by phototriode array board and LED light source array plate structure
Into.LED light source array is made by 54 feux rouges paster type light emitting types, and adjacent two light emitting diode centers are away from being 1.5mm.
In the present apparatus, LED light source array plate is the separable components of device, can be with when needing to change light source in particular circumstances
Required array of source is changed, the portability of system is added.
Opto-electronic receiver array board is that 162 phototriodes are evenly distributed on the wiring board processed, method for packing and
LED array plate is essentially identical, considers from improving on overall performance, packing forms are encapsulated using sphere.On the one hand this encapsulation has
Beneficial to influence of the reduction field sunburst to apparatus measures, on the other hand, reduce the energy consumption of instrument, add measurement when
Between.The lower row of horizontal array plate is light emitting diode matrix, and upper row is phototriode array.By the rotation of alternating current generator,
Tested blade is brought into the rotating shaft of instrument and measured.In the middle of two row's photoelectric tubes, photodiode array light, not by
Blade covers phototriode and can receive light to turn on and export high level；Covering phototriode by blade can not connect
Light is received, pipe is in cut-off state, and output is low level.Cross measure, is the state by measuring phototriode array
And complete.The number for the phototriode being blocked is gathered by FPGA, and then the transverse width of blade can be determined.
The measurement apparatus is connected with AC voltage-stabilizing electricity by inductance capacitance, for being powered for the measurement apparatus.
The FPGA numbers adopt module for EP2C70F896C6, and device has 68416 logic units (LE), 250
M4KRAM storage resources, 150 embedded hardware multipliers and 4 phaselocked loops, support the processors of Nios II, and the system that can meet is set
Meter is required.Data processing module is II 32 RISC embedded software core processor processors of Nios, takes 1800 logic units,
Nios II clock is set as 100MHz, the processors of Quick-type (II/f of Nios) Nios II are selected, mounted in Avalon buses
Phaselocked loop, system timer, JTAG UART interfaces, FLASH controller, EPCS controllers, SSRAM controllers, general purpose I/O controls
The peripheral components such as device processed, CMOS controllers.
This measurement apparatus has considered various situations in debugging process, has carried out substantial amounts of experiment, from multiple angles
Spend and the performance of instrument is analyzed, and specific solution is given for the larger situation of relative error.The device
Design meet following requirement：Measurement range is 0~300cm2, resolution ratio reaches 0.8mm2；It can not only complete high-precision
Blade area is measured, while the survey of the parameters such as the worm channel area of blade, blade length-width ratio, the gross area, average area can be completed
Amount；Measurement accuracy reaches the 1.5% of requirement；It can be realized man-machine logical by USB port and serial ports by the incoming host computer of blade data
News；Infringement degree very little of this measurement apparatus during measuring to blade surface；This measurement apparatus is in prolonged work
Under work, it is possibility to have good stability and reliability；And have a good portability, can very convenient field measurement work；
This measurement apparatus is with good expansibility and maintainable, can facilitate when measurand or measuring environment change
Ground adjustment is adapted to.
This measurement apparatus has carried out substantial amounts of test after the completion of debugging, is had for various situations and different environment
The test of body.Even if test result shows that the factors such as the shape of blade, the color of blade, the measuring environment of blade can be tied to measurement
Fruit produces a certain degree of influence, but influence degree very little, and worst error scope can be controlled in 1.5%, can not protected
That demonstrate,proves high measurement accuracy in particular cases can also reduce deviation by the intensity adjustment of light source, so as to ensure this measurement apparatus
Reliability and stability.
Above content is only explanation technological thought of the present utility model, it is impossible to limit protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme each falls within this reality
Within protection domain with new claims.
Claims (9)
1. a kind of embedded plant leaf area measurement apparatus, it is characterised in that：Including image capture module, data processing module,
Data memory module and display module, described image acquisition module are connected with the data processing module, horizontal for measuring blade
To width, the data processing module is also associated with FLASH memory and liquid crystal display, and the liquid crystal display is used for institute
The blade information for stating image capture module collection shows that the FLASH memory is used to be deposited the blade information in real time
Storage is preserved.
2. a kind of embedded plant leaf area measurement apparatus according to claim 1, it is characterised in that：Described image is gathered
Module adopts module, LED light source array, phototriode array and solid-state relay including FPGA numbers, and the FPGA numbers adopt module
Electrically connected successively with the phototriode array and solid-state relay group, the LED light source array is used for for the measurement dress
Offer light source is provided.
3. a kind of embedded plant leaf area measurement apparatus according to claim 2, it is characterised in that the LED/light source
Array is detachable.
4. a kind of embedded plant leaf area measurement apparatus according to claim 2, it is characterised in that：Photosensitive three pole
Pipe array and solid-state relay group include three groups respectively, are respectively used to adopt the module transmission blade information to the FPGA numbers.
5. a kind of embedded plant leaf area measurement apparatus according to claim 2, it is characterised in that：The FPGA numbers are adopted
Module is EP2C70F896C6.
6. a kind of embedded plant leaf area measurement apparatus according to claim 1, it is characterised in that：The data processing
Module is II 32 RISC embedded software core processor processors of Nios, is connected with membrane keyboard.
7. a kind of embedded plant leaf area measurement apparatus according to claim 1, it is characterised in that：Display module is a little
The liquid crystal display of formation.
8. a kind of embedded plant leaf area measurement apparatus according to claim 1, it is characterised in that：The measurement apparatus
On be additionally provided with USB/ serial communication interfaces, for the blade information data of measurement to be passed into host computer, same to host computer
Complete real-time data transmission.
9. a kind of embedded plant leaf area measurement apparatus according to any one of claim 1 to 8, it is characterised in that：
The measurement apparatus is connected with AC voltage-stabilizing electricity by inductance capacitance, for being powered for the measurement apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284969.7U CN206399379U (en) | 2016-11-28 | 2016-11-28 | A kind of embedded plant leaf area measurement apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284969.7U CN206399379U (en) | 2016-11-28 | 2016-11-28 | A kind of embedded plant leaf area measurement apparatus |
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| Publication Number | Publication Date |
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| CN206399379U true CN206399379U (en) | 2017-08-11 |
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| CN201621284969.7U Expired - Fee Related CN206399379U (en) | 2016-11-28 | 2016-11-28 | A kind of embedded plant leaf area measurement apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767560A (en) * | 2016-11-28 | 2017-05-31 | 榆林学院 | A kind of plant leaf area measuring instrument |
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2016
- 2016-11-28 CN CN201621284969.7U patent/CN206399379U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767560A (en) * | 2016-11-28 | 2017-05-31 | 榆林学院 | A kind of plant leaf area measuring instrument |
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