CN110135550A - A kind of application rate on-Line Monitor Device based on line array CCD - Google Patents

A kind of application rate on-Line Monitor Device based on line array CCD Download PDF

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Publication number
CN110135550A
CN110135550A CN201910347732.0A CN201910347732A CN110135550A CN 110135550 A CN110135550 A CN 110135550A CN 201910347732 A CN201910347732 A CN 201910347732A CN 110135550 A CN110135550 A CN 110135550A
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China
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array ccd
line array
convex lens
optically focused
monitoring
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CN201910347732.0A
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CN110135550B (en
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向阳
熊瑛
陈益千
李亚军
林洁雯
胡正方
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Hunan Agricultural University
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Hunan Agricultural University
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06MCOUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00Design features of general application
    • G06M1/27Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
    • G06M1/272Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum using photoelectric means

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Sowing (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Abstract

The application rate on-Line Monitor Device based on line array CCD that the invention discloses a kind of, by monitoring device shell, source of parallel light, optically focused convex lens and line array CCD composition, the monitoring device shell is provided with seed channel along the vertical direction, the source of parallel light and the opposite two sides for being mounted on the seed channel of the optically focused convex lens, the line array CCD is mounted on other side of the optically focused convex lens relative to the seed channel, the monitoring plane perpendicular to seed channel is constituted by parallel rays, parallel rays in monitoring plane is converged to the effective sensitization area of line array CCD by collector lens, monitoring and counting to seed are realized by the intensity variation of photosensitive element on monitoring line array CCD, to realize the monitoring for planting with sowing machine amount.Compared with prior art, the present invention have many advantages, such as sensing element quantity it is more, without monitoring blind area, can be achieved to the monitoring of small size seed and can be to more seeds while the case where falling is monitored.

Description

A kind of application rate on-Line Monitor Device based on line array CCD
Technical field
The present invention relates to planting with sowing machine amount monitoring technical fields more particularly to a kind of application rate based on line array CCD to exist Line monitoring device.
Background technique
Develop precision agriculture to advantageously reduce the wasting of resources, protection environment and promote agricultural sustainable development.Precisely sowing It is an important link in precision agriculture, can be reduced seed waste, improve crop yield, increase economic benefit.Quantity-variation type seeding As the important component precisely sowed, it is different according to the sowing quantity in different plot and automatically adjusts to application rate A kind of automatic control system.Existing seeder mostly uses mechanical seed sowing device, and seeding process carries out under the conditions of totally-enclosed, behaviour The actual sowing rate of seeder can not be grasped and carry out application rate adjusting by making personnel, while stifled when there is scarce kind of plants case, seed spout When the failures such as plug, it will cause broadcast leakage, influence seeding quality.Therefore planting with sowing machine amount broadcasts raising into real-time monitoring Kind quality realizes quantity-variation type seeding and develops precision agriculture have far reaching significance.
The sensor that existing application rate monitoring device uses mainly has capacitance type sensor, piezoelectric transducer and photoelectricity Formula sensor.Photoelectric sensor is most widely used, its working principle is that seed by interdicting infrared ray when seeding channel It is monitored and counts.Photoelectric sensor generallys use one or several infrared ray, cannot achieve to the comprehensive of seeding channel Covering, monitoring blind area easy to form causes missing inspection, at the same be difficult to monitor the small sizes such as rapeseed seed, be difficult to it is same to more seeds At present it falls and is monitored.
Summary of the invention
It is an object of the invention to for existing planting with sowing machine amount monitoring device there are monitoring blind area, be easy to happen leakage It examines, be difficult to monitor small size seed and be difficult to propose a kind of based on linear array more seeds while the problem of being monitored of falling The application rate on-Line Monitor Device of CCD.
To achieve the purpose of the present invention, the present invention takes following technical scheme: a kind of application rate based on line array CCD is online Monitoring device is made of monitoring device shell, source of parallel light, optically focused convex lens and line array CCD, and the source of parallel light, optically focused are convex Lens and line array CCD are mounted on the inside of the monitoring device shell, and the monitoring device shell is provided with kind along the vertical direction The opposite two sides for being mounted on the seed channel of subchannel, the source of parallel light and the optically focused convex lens, the line array CCD peace Other side mounted in the optically focused convex lens relative to the seed channel, the light-emitting surface of the source of parallel light and the linear array The photosurface of CCD is parallel and the optical axis all perpendicular to optically focused convex lens.
The source of parallel light is by point light source and light source convex lens group at the luminous point of the point light source is located at the light source In the focus of convex lens, scattering light that the point light source issues is become described in parallel rays passes perpendicularly through by light source convex lens Seed channel.
The optical center of the optically focused convex lens is less than the coke of the optically focused convex lens at a distance from the line array CCD photosurface Away from the distance, which is arranged so that after the light that the source of parallel light issues passes through the optically focused convex lens, converges to the line array CCD Spot diameter on photosurface is equal to the effective sensitization area length of the line array CCD, which specifically can be using following public Formula calculates: the optical center of optically focused convex lens at a distance from line array CCD photosurface=focal length-optically focused convex lens coke of optically focused convex lens Effective sensitization area length/optically focused convex lens diameter away from × line array CCD photosurface.
The photosensitive element quantity of the line array CCD is 128, and it is linear that these photosensitive elements are linearly uniformly distributed composition Effective sensitization area is, it can be achieved that the luminous intensity of 128 points of continuous uniform monitors.In the seed channel, it is parallel to parallel Radiation direction and the plane for passing through the linear effective sensitization area of the line array CCD are monitoring plane, monitor plane perpendicular to described Seed channel, the parallel rays monitored in plane converge to the effective photosensitive of the line array CCD by the optically focused convex lens Region.The continuous parallel rays in part is interdicted when seed passes through monitoring plane, if so as to cause continuous on the line array CCD A dry photosensitive element luminous intensity changes.By carrying out analysis realization pair to photosensitive element output signal on the line array CCD In the monitoring of seed.
The monitoring device shell is provided with seeding interface tube in top above the seed channel, leads in the seed It is provided with lower section seeding interface tube below road, can be sent out this by the top seeding interface tube and lower section seeding interface tube On the bright discharging tube being mounted below seeding apparatus of seeder.
The inner wall of the monitoring device shell is covered with light absorbent, with prevent the inner wall of the monitoring device shell for The reflection of light causes the interference to monitoring.
The invention has the advantages that providing a kind of application rate on-Line Monitor Device based on line array CCD, pass through directional light Line constitutes the monitoring plane perpendicular to seed channel, and will monitor parallel rays in plane by collector lens and converge to linear array The effective sensitization area of CCD realizes monitoring and meter to seed by the intensity variation of photosensitive element on monitoring line array CCD Number, to realize the monitoring for planting with sowing machine amount.Since the effective sensitization area of line array CCD is continuously intensively distributed with 128 A photosensitive element may be implemented, it can be achieved that non-blind area monitoring in monitoring for small size seed and monitoring plane The monitoring for the situation that falls simultaneously for more seeds.
Detailed description of the invention
Fig. 1 show vertical view full sectional view of the invention.
Fig. 2 show main view of the invention.
Fig. 3 show seed monitoring principle schematic diagram of the present invention.
In figure: 1, monitoring device shell;2, source of parallel light;21, point light source;22, light source convex lens;3, seed channel;4, Optically focused convex lens;5, line array CCD;6, top seeding interface tube;7, lower section seeding interface tube;8, seed.
Specific embodiment
The following further describes the present invention with reference to the drawings.
As shown in Figure 1 it is vertical view full sectional view of the invention, is illustrated in figure 2 main view of the invention, one kind is based on line The application rate on-Line Monitor Device of battle array CCD is made of monitoring device shell 1, source of parallel light 2, optically focused convex lens 4 and line array CCD 5. The source of parallel light 2 is made of point light source 21 and light source convex lens 22.It is logical that monitoring device shell 1 is provided with seed along the vertical direction Road 3, the top of seed channel 3 is provided with top seeding interface tube 6, the lower section of seed channel 3 is provided with lower section seeding interface tube 7.The inner wall of monitoring device shell 1 is covered with light absorbent, to prevent the inner wall of monitoring device shell 1 from making for the reflection of light In pairs in the interference of monitoring.Source of parallel light 2 and the opposite two sides for being mounted on seed channel 3 of optically focused convex lens 4, line array CCD 5 are installed In other side of the optically focused convex lens 4 relative to seed channel 3.Point light source 21 is mounted in the focus of light source convex lens 22.Point The scattering light that light source 21 issues becomes parallel rays across seed channel 3, by optically focused convex lens after light source convex lens 22 It is converged to after mirror 4 on the photosurface of line array CCD 5.The optical center of optically focused convex lens 4 is set as at a distance from the photosurface of line array CCD 5 So that parallel rays is equal to having for line array CCD 5 by the spot diameter converged on 5 photosurface of line array CCD after optically focused convex lens 4 Imitate photosensitive region length.
In use, the present invention to be mounted on to the lower section of the single seeding outlet of seeding apparatus of seeder, by top seeding interface tube 6 It is connected to feed mechanism for seed and exports connected discharging tube, lower section seeding interface tube 7 is connected to the discharging tube for exporting seed to ground. When seeder works, the seed of feed mechanism for seed discharge enters seed channel 3 through top seeding interface tube 6, then by lower section discharging tube Interface 7 is discharged.
It is illustrated in figure 3 seed monitoring principle schematic diagram of the present invention, when seed passes through the monitoring plane in seed channel 3, The continuous light in part will be interdicted, several continuous photosensitive element intensity of light on line array CCD 5 is caused to change.Pass through Monitoring and counting of the intensity variation realization of photosensitive element on line array CCD 5 to seed are monitored, to realize for sowing machine sowing The monitoring of kind amount.Since the effective sensitization area of line array CCD 5 is continuously intensively distributed with 128 photosensitive elements, it can be achieved that for small The monitoring and the non-blind area monitoring in monitoring plane of size seed.When having more seeds while being dropped through monitoring plane, The photosensitive element signal of multiple regions can be caused to change on linear array CCD5, therefore may be implemented for more seeds simultaneously The monitoring of whereabouts situation.
Although being described in conjunction with the accompanying implementation method of the invention, those skilled in the art can not depart from this hair Various modifications and deformation are made in the case where bright spirit and scope, such modification and variation are each fallen within by affiliated claim In limited range.

Claims (8)

1. a kind of application rate on-Line Monitor Device based on line array CCD, it is characterized in that by monitoring device shell, source of parallel light, gathering Light convex lens and line array CCD composition, the source of parallel light, optically focused convex lens and line array CCD are mounted on the monitoring device shell Inside, the monitoring device shell is provided with seed channel, the source of parallel light and the optically focused convex lens along the vertical direction The opposite two sides for being mounted on the seed channel, it is logical relative to the seed that the line array CCD is mounted on the optically focused convex lens The other side in road, the light-emitting surface of the source of parallel light are parallel with the photosurface of the line array CCD and all perpendicular to optically focused convex lens The optical axis of mirror.
2. a kind of application rate on-Line Monitor Device based on line array CCD as described in claim 1, it is characterized in that described is parallel Light source is by point light source and light source convex lens group at the luminous point of the point light source is located in the focus of the light source convex lens.
3. a kind of application rate on-Line Monitor Device based on line array CCD as described in claim 1, it is characterized in that the optically focused is convex The optical center of lens is less than the focal length of the optically focused convex lens at a distance from the line array CCD photosurface.
4. a kind of application rate on-Line Monitor Device based on line array CCD as described in claim 1, it is characterized in that the optically focused is convex The optical center of lens is arranged so that the light that the source of parallel light issues passes through the optically focused at a distance from the line array CCD photosurface The spot diameter converged on the line array CCD photosurface after convex lens is equal to the effective sensitization area length of the line array CCD.
5. a kind of application rate on-Line Monitor Device based on line array CCD as described in claim 1, it is characterized in that the optically focused is convex The optical center of lens is calculated at a distance from the line array CCD photosurface using following formula: the optical center and line array CCD of optically focused convex lens The distance of photosurface=optically focused convex lens focal length-optically focused convex lens focal length × line array CCD photosurface effective sensitization area is long Degree/optically focused convex lens diameter.
6. a kind of application rate on-Line Monitor Device based on line array CCD as described in claim 1, it is characterized in that the linear array The photosensitive element quantity of CCD is 128.
7. a kind of application rate on-Line Monitor Device based on line array CCD as described in claim 1, it is characterized in that the monitoring fills Shell is set to be provided with seeding interface tube in top above the seed channel, be provided with lower section below the seed channel Seeding interface tube.
8. a kind of application rate on-Line Monitor Device based on line array CCD as described in claim 1, it is characterized in that the monitoring fills It sets inner walls and is covered with light absorbent.
CN201910347732.0A 2019-04-28 2019-04-28 Seeding rate on-line monitoring device based on linear array CCD Active CN110135550B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110595553A (en) * 2019-09-18 2019-12-20 华中农业大学 LED visible light surface large and medium seed crop seed metering detection device
CN112881340A (en) * 2021-01-12 2021-06-01 华中农业大学 General sensing device of refraction type thin-surface laser seed flow

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101715668A (en) * 2009-12-22 2010-06-02 中国农业机械化科学研究院 Planter, planting monitoring equipment and method thereof
CN101816235A (en) * 2010-04-21 2010-09-01 湖南农业大学 Infrared seeding monitoring device
EP3135090A1 (en) * 2015-08-24 2017-03-01 Digitroll Kft. Seed sensor and method for detecting blockage of a seeding channel
CN210038863U (en) * 2019-04-28 2020-02-07 湖南农业大学 Seeding quantity on-line monitoring device based on linear array CCD

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101715668A (en) * 2009-12-22 2010-06-02 中国农业机械化科学研究院 Planter, planting monitoring equipment and method thereof
CN101816235A (en) * 2010-04-21 2010-09-01 湖南农业大学 Infrared seeding monitoring device
EP3135090A1 (en) * 2015-08-24 2017-03-01 Digitroll Kft. Seed sensor and method for detecting blockage of a seeding channel
CN210038863U (en) * 2019-04-28 2020-02-07 湖南农业大学 Seeding quantity on-line monitoring device based on linear array CCD

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张玲: "基于遥感与模型耦合的区域小麦生长监测预测研究", 《中国优秀硕士学位论文全文数据库(电子期刊)》, 15 June 2017 (2017-06-15) *
苑严伟;白慧娟;方宪法;王德成;周利明;牛康;: "玉米播种与测控技术研究进展", 农业机械学报, no. 09, 26 July 2018 (2018-07-26), pages 1 - 18 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110595553A (en) * 2019-09-18 2019-12-20 华中农业大学 LED visible light surface large and medium seed crop seed metering detection device
CN112881340A (en) * 2021-01-12 2021-06-01 华中农业大学 General sensing device of refraction type thin-surface laser seed flow

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