CN109759340A - Fresh tea leaves sorting unit and method - Google Patents
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Abstract
This application discloses a kind of fresh tea leaves sorting unit and methods, the sorting unit includes transparent conveyer belt, feeding device, identification device and device for eliminating, feeding device is located at the upstream of transparent conveyer belt, device for eliminating is located at transparent conveyer belt downstream, for identification device for identifying to the fresh tea leaves on transparent conveyer belt, the method for separating includes being placed in fresh tea leaves on transparent conveyer belt；Fresh tea leaves on transparent conveyer belt are identified；After fresh tea leaves are detached from conveyer belt, fresh tea leaves are sorted according to recognition result.Using the tea dry sorting device and method of the application, fresh tea leaves are shot and identified on transparent conveyer belt, fresh tea leaves are rejected in transparent conveyer belt downstream, fresh tea leaves are when on transparent conveyer belt, relative transparent conveyer belt is static, and is influenced by extraneous factor smaller, and fresh tea leaves carry out rejecting movement after transparent conveyer belt downstream is spilled over again, fresh tea leaves running track is stablized, and can guarantee the separating effect of fresh tea leaves.
Description
Technical field
This application involves a kind of sorting unit and method more particularly to a kind of fresh tea leaves sorting unit and methods.
Background technique
Existing fresh tea leaves color selector mainly carries out color sorting to fresh tea leaves finished product, not to fresh tea leaf raw material, that is, fresh tea leaves
The equipment for carrying out color sorting, and existing fresh tea leaves screening installation mainly carry out the impurity (such as stone, branch) in fresh leaf
Sorting, can not sort simple bud, Dan Ye, one leaf of a bud, the two leaves and a bud etc. in fresh tea leaves, manually to different types of
Fresh tea leaves fresh leaf is sorted, and need to be expended largely manually, efficiency is lower.
In addition, including that caterpillar type color sorting machine, wherein identification device and screening plant are conveyed in crawler belt in existing color sorting device
The end of device, material is after conveying device is dished out, and material is because inertia continues to move, and flight path is at parabola, and material is through knowing
When the viewpoint of other device, the light-illuminating material of material lamp, Background apparatus provides background for visor, and visor shoots material picture,
Identification device identifies the picture taken, when the bad material identified passes through nozzle, by the high pressure gas of nozzle ejection
Structural reform degenerates the motion profile of material, and bad material is fallen into the stock bucket of receiving hopper；When good material passes through nozzle, nozzle not work
Make, good material is along the honest material bucket that the flight of proper motion track falls into receiving hopper.It is contemplated that fresh to tea using caterpillar type color sorting machine
Leaf is sorted, but still there are some problems.
Summary of the invention
The inventor of the present application found through research that existing caterpillar type color sorting machine shooting picture and material recognition are in material
It is carried out in flight course, when sorting pinniform or sheet etc. are longer, larger material, when such as fresh tea leaves, shoots time and the knowledge of picture
The time of other material can be long, and the material flight time is also longer, and material during exercise can be by extraneous factors such as air drag
It influences, the motion profile of material can become unstable, and when material passes through nozzle, the distance apart from nozzle can be changed, range difference
After different increase, difficulty will increase to the rejecting of material, cause accurately reject bad material；Meanwhile also will increase splicing difficulty,
Some good materials can fall into the stock part of receiving hopper, influence the separating effect of color selector.
In order to solve the above problem, the application first aspect provides a kind of fresh tea leaves sorting unit, can be accurately and efficiently right
Fresh tea leaves are sorted.
The fresh tea leaves sorting unit includes transparent conveyer belt, feeding device, identification device and device for eliminating, wherein
Feeding device is located at the upstream of transparent conveyer belt, and device for eliminating is located at transparent conveyer belt downstream, and identification device is used for transparent defeated
The fresh tea leaves taken are sent to be identified.Its middle and upper reaches refers to that the direction of material (fresh tea leaves) supplied materials, downstream refer to that material (fresh tea leaves) go out
The direction of material.The upstream can refer to that material is expected on transparent conveyor belt from the level of the side of transparent conveyor belt, also can refer to object
Material is fallen on transparent conveyor belt under the top of transparent conveyor belt；The downstream refers to is transported after material is thrown off from transparent conveyor belt
Dynamic direction.
Using the fresh tea leaves sorting unit of the application first aspect, fresh tea leaves are shot and known on a conveyor
Not, fresh tea leaves reject fresh tea leaves when delivery device tip is dished out.Fresh tea leaves are when on transparent conveyer belt, relative transparent
Conveyer belt is static, and is influenced by extraneous factor smaller, and material running track is stablized, and knows on the conveyor belt to fresh tea leaves
Not, can be improved recognition effect, time of the fresh tea leaves from viewpoint to nozzle is determined by the speed of transparent conveyer belt, therefore, material
Time from viewpoint to nozzle is constant, and sorting unit can accurately reject unwanted material, quickly to variety classes fresh tea leaves
Fresh leaf carries out category sorting, guarantees color selector color selection effect with this, especially different types of to the fresh tea leaves of different types
Fresh tea leaves are sorted.
According to the fresh tea leaves sorting unit of the application first aspect, the identification device includes visor, background board and material
Lamp, the visor are located at the top of transparent conveyer belt, and the background board and material lamp position are in the lower section of transparent conveyer belt.Position at this time
The light that material lamp below transparent conveyer belt issues can illuminate fresh tea leaves through transparent conveyer belt, because of fresh tea leaves
For sheet and relatively thin, so light partially can penetrate fresh tea leaves blade (can be regarded as transmitted light), fresh tea leaves can clearly at
Picture is avoided using reflected light imaging, because of shade caused by surface irregularity.
According to the fresh tea leaves sorting unit of the application first aspect, material institute when the visor, identification device identify material
Position and background board be located in a straight line, the material lamp be two, be symmetrically distributed in background board two sides.It carries on the back in this way
Scape plate can provide imaging background for visor, while material lamp is distributed in the two sides of background board, can make through transparent belt and
The light distribution of fresh tea leaves is more evenly, it is not easy to shade is generated, to guarantee the clarity of imaging.
According to the fresh tea leaves sorting unit of the application first aspect, the device for eliminating includes nozzle, and nozzle is perpendicular to defeated
Band is sent to be arranged.I.e. nozzle has certain length under normal circumstances, and nozzle length extending direction is vertical with plane where conveyer belt.
According to the fresh tea leaves sorting unit of the application first aspect, on the outside of the extended line of the nozzle and the roller of conveyer belt
Section is parallel, distance < 100mm of nozzle extended line section on the outside of the roller of conveyer belt, it is preferred that the extension of nozzle
Distance < 50mm of section on the outside of the roller of linear distance conveyer belt.Specifically, in the lesser fresh tea leaves of detection blade, nozzle
Extended line can be with phase on the outside of the extended line and conveyer belt roller of length direction tangent namely nozzle on the outside of the roller of conveyer belt
It cuts.By improvement in this respect, it can guarantee nozzle so as far as possible close to the discharge port of conveyer belt, so that fresh tea leaves are from defeated
After sending band to be thrown off, the fresh tea leaves for being identified as stock can be rejected in time, in case fresh tea leaves are because blade is larger and light,
Motion path degree of controllability is lower during dishing out, and causes accidentally to reject.Meanwhile because the roller of nozzle and conveyer belt is tangent, ensure that
The fresh tea leaves being removed are not fallen out on roller.Outside and inside are briefly described herein, inside refers to and other one
The opposite side of a roller (conveying of belt needs two rollers), outside is the side opposite with inside, i.e., opposite with inside
And the side contacted with transparent conveyer belt.Section is the section of roller lateral surface on the outside of the roller.
According to the fresh tea leaves sorting unit of the application first aspect, material institute when the identification device identifies material
Positional distance device for eliminating material separating when material where position be greater than identification device identification material quality required for
The product of time and conveyer belt travelling speed.Because fresh tea leaves area is larger, identification process is longer, is can be avoided in this way because identification is prolonged
Inaccurate problem is rejected caused by late.
The application second aspect provides a kind of fresh tea leaves method for separating, can be accurately and efficiently to fresh tea leaves, especially
Fresh tea leaves are sorted.
The fresh tea leaves method for separating, comprising: fresh tea leaves are placed on transparent conveyer belt；It is fresh to the tea on transparent conveyer belt
Leaf is identified；After fresh tea leaves are detached from conveyer belt, fresh tea leaves are sorted according to recognition result.
By being identified on transparent belt to fresh tea leaves, screened again after fresh tea leaves are dished out from transparent belt,
It can be avoided in the prior art because postponing caused by identification process, while can guarantee the operation of the fresh tea leaves in identification process
Stability-of-path is not influenced by the external world, is accurately identified.In addition time of the fresh tea leaves from identification position to rejecting position is substantially by transparent
The speed of conveyer belt determines, therefore sorting unit can accurately reject unwanted material, quickly fresh to variety classes fresh tea leaves
Leaf carries out category sorting, guarantees color selector color selection effect with this, to the fresh tea leaves of different types, especially different types of tea
Fresh leaf is sorted.
It is after fresh tea leaves are placed on transparent conveyer belt, tea is fresh according to the fresh tea leaves method for separating of the application second aspect
Leaf transports a period of time on the conveyor belt, then identifies to fresh tea leaves.In this way, fresh tea leaves run one section on transparent conveyer belt
After time, fresh tea leaves state can be basicly stable, identifies at this time to fresh tea leaves, and recognition effect is more preferably reliable.
According to the fresh tea leaves method for separating of the application second aspect, the identification is including image acquisition process and to image
Analytic process, the end time of described image acquisition arrives fresh tea leaves are sorted at the beginning of greater than analysis to image
The time of Cheng Suoyong.It can guarantee after being identified to fresh tea leaves in this way, fresh tea leaves have time enough to be transferred to screening plant
It is screened at place.
According to the fresh tea leaves method for separating of the application second aspect, the identification includes knowing to the shape of fresh tea leaves
Not or the identification includes identifying to the color of fresh tea leaves.Identification to fresh tea leaves shape includes to simple bud, Dan Ye, one
The identification of the shapes such as one leaf of bud, two leaves and a bud, namely fresh tea leaves are screened by shape feature, fresh tea leaves color is carried out
Identification, including the identification to old leaf and young leaves, good leaf can also be identified with the fresh leaf with scab, because of old leaf and tender leaf
Shade it is different, and have scab fresh leaf, color and its ambient color be not also identical at scab, light transmission
When fresh tea leaves, shape, color and the block spot of fresh tea leaves can clearly show that out.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the fresh tea leaves screening installation of the embodiment of the present application 1；
Fig. 2 is the schematic diagram of in being implemented according to the application 2 fresh tea leaves method for separating.
Wherein:
01, visor, 02, transparent conveyer belt, 03, drive roll, 04, material lamp, 05, Background apparatus, 06, driven voller, 07, spray
Mouth, 08, receiving hopper.
Specific embodiment
Embodiments herein is described below in detail, it should be noted that the embodiment by reference to attached drawing description is to show
Example property, it is intended to for explaining the application, and should not be understood as the limitation to the application.
Embodiment 1
It is illustrated herein by fresh tea leaves sorting unit of the embodiment 1 to the application.As shown in Figure 1, the tea of the application
Fresh leaf sorting unit includes transparent conveyer belt 02, identification device and device for eliminating, and the transparent conveyer belt 02 is fixed on drive roll
03 and driven voller 06 on, the identification device can identify the fresh tea leaves on transparent conveyer belt 02, the device for eliminating
Positioned at the downstream of transparent conveyer belt, the fresh tea leaves for dishing out to transparent conveyer belt 02 are screened.Specifically, the identification dress
It sets including visor 01, material lamp 04 and Background apparatus 05, the device for eliminating includes nozzle 07.Further, the fresh tea leaves
Sorting unit further includes the receiving hopper 08 for splicing, and receiving hopper 08 includes stock receiving hopper and honest material receiving hopper, wherein stock
Receiving hopper is located at the downside of honest material receiving hopper.
In the prior art, it generallys use reflected light to sort material, namely the reflection by surface of material to light,
The characteristics of image for acquiring material, distinguishes the quality of material.Due to fresh tea leaves unique characteristics, material itself is softer,
And it is more frivolous, it is in irregular shape, general reflected light is such as used, is easy to produce shade, to fresh tea leaves in acquired image
Color or shape show it is all more smudgy.Therefore as a kind of improvement for implementing 1, visor 1 may be provided at transparent conveying
With 02 top, material lamp 04 and Background apparatus 05 are arranged below transparent conveyer belt 02.In this way, the luminous energy that material lamp 04 issues
Fresh tea leaves are enough penetrated, and the shape of fresh tea leaves and color are clearly indicated out, the profile of each section in acquired image
Also more clear.Specifically, visor, viewpoint and background board are located in a straight line, viewpoint here refers to that visor carries out material
Position when information collection where material.At this point, background board, which can carry out Image Acquisition for visor, provides background, so that image is more
Clearly.Material lamp can be configured according to demand, if material lamp light intensity itself is stronger, 1 can be only set as, conversely, settable
It is multiple.In one specific case, material lamp may be configured as two, and be symmetrically distributed in background board two sides, be irradiated in this way
Light on fresh tea leaves can be distributed more uniform, effectively prevent the appearance of shade.Specifically, material lamp 04 can be LED light, halogen
Plain lamp etc..
As a kind of improvement of embodiment 1, nozzle can be arranged perpendicular to transparent conveyer belt, this is because fresh tea leaves are lighter,
If nozzle inclination is arranged, when gas is blown on fresh tea leaves, fresh tea leaves may be rotated and be flown up, and be spiraled above receiving hopper,
Even fly out receiving hopper, and nozzle is vertically arranged, and can guarantee that fresh tea leaves are directly blown into hopper.Further, the extension of nozzle
Line is parallel with the 06 outside section of driven roller of conveyer belt, and the distance of nozzle extended line section on the outside of the roller of conveyer belt
< 100mm, still further preferably, distance < 50mm of the extended line of nozzle section on the outside of the roller of conveyer belt.Because due to
The characteristic of fresh tea leaves itself, motion profile is easy to receive extraneous influence, after dishing out in transparent conveyer belt, it is desirable to the greatest extent
Bad fresh tea leaves are rejected fastly.To the runing time being removed after being dished out by shortening bad material from conveyer belt, can prevent
The change of fresh tea leaves running track improves the accuracy rate of rejecting.Limit the extended line of nozzle and 06 outside of driven voller of conveyer belt
The distance of section not only can be shortened after fresh tea leaves are dished out from conveyer belt to being kicked the runing time removed, but also can guarantee fresh tea leaves not
It can bump against on the roller of conveyer belt.
As a kind of improvement of embodiment 1, position when identification device identifies material where material (namely visor
Projected position on transparent conveyer belt) apart from device for eliminating material separating when material where position (rejecting position a little)
Greater than the product of time and conveyer belt travelling speed required for identification device identification material quality.It is can be avoided in this way because of identification
Inaccurate problem is rejected caused by delay.
Embodiment 2
It is illustrated herein by the fresh tea leaves method for separating of 2 couples of the application in implementing.As shown in Fig. 2, the tea of the application
One embodiment of fresh leaf method for separating includes, step 1: fresh tea leaves are placed on transparent conveyer belt；Step 2: to transparent defeated
The fresh tea leaves taken are sent to be identified；Step 3: being divided according to recognition result fresh tea leaves after fresh tea leaves are detached from conveyer belt
Choosing.
It is described further below with fresh tea leaves method for separating of the fresh tea leaves sorting unit shown in Fig. 1 to the application,
Material (fresh tea leaves) is transported on transparent conveyer belt 02 by feeding device first；Then material is passing through viewpoint (i.e. identification device
When being identified to material, the location of material) when, identification device identifies the picture taken, specifically, being located at
For the light of the material lamp 05 of transparent 02 downside of conveyer belt transmitted through transparent conveyer belt and fresh tea leaves, Background apparatus 05 is visor 01
Background is provided, visor 01 carries out Image Acquisition to fresh tea leaves and judges that fresh tea leaves have been fresh tea leaves by acquired image feature
Or bad fresh tea leaves, are classified fresh tea leaves；After transparent conveyer belt is spilled over, recognition allowing device is identified as bad fresh tea leaves
The fresh tea leaves of material, when by nozzle 07, nozzle 07 sprays high pressure gas, changes the motion profile of bad material, bad material is fallen
Enter in the stock receiving hopper of receiving hopper 08, recognition allowing device is identified as the material of honest material, and nozzle 07 is failure to actuate, and material is along former track
Flight, falls into the honest material receiving hopper of receiving hopper 08, realizes the sorting to fresh tea leaves with this.
As a kind of improvement of embodiment 2, after fresh tea leaves are placed on transparent conveyer belt, fresh tea leaves first can be conveyed one section
Time again identifies fresh tea leaves after fresh tea leaves status is stablized, can guarantee that fresh tea leaves are stable in this way and be attached to
On conveyer belt, when carrying out Image Acquisition to fresh tea leaves, the image of fresh tea leaves is become apparent from, and keeps identification process more accurate, clear.
As a kind of improvement of embodiment 2, identification process specifically includes image acquisition process and the analysis to image
Journey, wherein this period sorted since being accomplished to fresh tea leaves Image Acquisition, should be greater than the analytic process to image
Time used can guarantee screen after the completion of analyzing fresh tea leaves further according to analysis result in this way.
As a kind of improvement of embodiment 2, carrying out identification process to fresh tea leaves includes identifying to the shape of fresh tea leaves,
Because fresh tea leaves are according to different structure or shape, belong to different grades, usual fresh tea leaves have simple bud, Dan Ye, one leaf of a bud, one
Several shapes such as two leaf of bud, when fresh tea leaves are irradiated through transmitted light, the form of fresh tea leaves is clearly presented in visor, by right
The analysis of fresh tea leaves image can recognize fresh tea leaves of different shapes, to screen to fresh tea leaves.In addition, because fresh tea leaves are deposited
In old leaf and tender leaf, different grades is also belonged to, and old leaf and tender leaf be when projection light irradiates, the shade presented is different
Sample, in addition to this, for some fresh tea leaves for having color spot, it is also desirable to be identified, translucency and the fresh tea leaves itself of color spot
Translucency is different, and in Image Acquisition, shown color is also different, therefore, can also be fresh to tea in fresh tea leaves identification process
The color of leaf is identified.
In the description of the present application, it is to be understood that the orientation or positional relationship of the instructions such as term " on ", "lower" is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description the application and simplifies description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of application.
While there has been shown and described that embodiments herein, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle and objective of the application, this
The range of application is defined by the claims and their equivalents.
Claims (10)
1. a kind of fresh tea leaves sorting unit characterized by comprising
Transparent conveyer belt, feeding device, identification device and device for eliminating, wherein
Feeding device is located at the upstream of transparent conveyer belt, and device for eliminating is located at the downstream of transparent conveyer belt, identification device for pair
Fresh tea leaves on transparent conveyer belt are identified.
2. fresh tea leaves sorting unit according to claim 1, which is characterized in that the identification device includes visor, background
Plate and material lamp, the visor are located at the top of transparent conveyer belt, and the background board and material lamp position are under transparent conveyer belt
Side.
3. fresh tea leaves sorting unit according to claim 1, which is characterized in that the visor, identification device identify material
When material where position and background board be located in a straight line, the material lamp be two, be symmetrically distributed in background board two
Side.
4. fresh tea leaves sorting unit according to claim 1, which is characterized in that the device for eliminating includes nozzle, nozzle
It is arranged perpendicular to conveyer belt.
5. fresh tea leaves sorting unit according to claim 1, which is characterized in that the extended line of nozzle and the roller of conveyer belt
Outside section is parallel, distance < 100mm of nozzle extended line section on the outside of the roller of conveyer belt, it is preferred that nozzle
Distance < 50mm of extended line section on the outside of the roller of conveyer belt.
6. fresh tea leaves sorting unit according to claim 1, which is characterized in that material when the identification device identification material
Position when the positional distance device for eliminating material separating at place where material is greater than required for identification device identification material quality
Time and conveyer belt travelling speed product.
7. a kind of fresh tea leaves method for separating, which is characterized in that including,
Fresh tea leaves are placed on transparent conveyer belt；
Fresh tea leaves on transparent conveyer belt are identified；
After fresh tea leaves are detached from conveyer belt, fresh tea leaves are sorted according to recognition result.
8. fresh tea leaves method for separating according to claim 7, which is characterized in that fresh tea leaves are placed on transparent conveyer belt
Afterwards, fresh tea leaves are transported to a period of time on the conveyor belt, then fresh tea leaves are identified.
9. fresh tea leaves method for separating according to claim 7, which is characterized in that it is described identification include image acquisition process and
To the analytic process of image, end time of described image acquisition at the beginning of being sorted to fresh tea leaves greater than to image
Analytic process used in the time.
10. fresh tea leaves method for separating according to claim 7, which is characterized in that the identification includes the shape to fresh tea leaves
Shape is identified or the identification includes identifying to the color of fresh tea leaves.
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| CN112170231A (en) * | 2020-08-14 | 2021-01-05 | 上海市农业科学院 | Leaf surface sorting robot based on emgu cv algorithm |
| WO2021068216A1 (en) * | 2019-10-12 | 2021-04-15 | 石卫阳 | Tea leaf screening apparatus for preliminary screening according to leaf shape |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021068216A1 (en) * | 2019-10-12 | 2021-04-15 | 石卫阳 | Tea leaf screening apparatus for preliminary screening according to leaf shape |
| CN112170231A (en) * | 2020-08-14 | 2021-01-05 | 上海市农业科学院 | Leaf surface sorting robot based on emgu cv algorithm |
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