CN102390578B - Realizing method for quantitative grain counting and device thereof - Google Patents

Realizing method for quantitative grain counting and device thereof Download PDF

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Publication number
CN102390578B
CN102390578B CN201110214864.XA CN201110214864A CN102390578B CN 102390578 B CN102390578 B CN 102390578B CN 201110214864 A CN201110214864 A CN 201110214864A CN 102390578 B CN102390578 B CN 102390578B
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China
Prior art keywords
material
grain
conveyer
memory
number
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CN201110214864.XA
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Chinese (zh)
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CN102390578A (en
Inventor
徐菊瑛
王红
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上海朝洋机电设备有限公司
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Priority to CN201110214864.XA priority Critical patent/CN102390578B/en
Publication of CN102390578A publication Critical patent/CN102390578A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00Automatic control, checking, warning, or safety devices
    • B65B57/20Applications of counting devices for controlling the feed of articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/30Devices or methods for controlling or determining the quantity or quality or the material fed or filled
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06MCOUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00Design features of general application
    • G06M1/08Design features of general application for actuating the drive
    • G06M1/10Design features of general application for actuating the drive by electric or magnetic means
    • G06M1/101Design features of general application for actuating the drive by electric or magnetic means by electro-optical means

Abstract

The invention discloses a realizing method for quantitative grain counting and device thereof, comprising a control system, a feeder, a conveyor, a camera, a memory hopper and a retainer, wherein said control system comprises an image processor, a combined calculation processor and PLC (programmable logic controller); said feeder feeds material to the conveyor in scattered way; at least one layer of memory hopper is set below the conveyor; the camera and the image processor performs image data collection and analysis and grain calculation on material on the conveyor, and delivers the material to the corresponding memory hopper, wherein the material grain number is corresponding to the memory hopper; the combined calculation processor performs combined calculation on the material amount in the memory hopper and compares it with the preset target grain number, and selects the memory combination with a grain number which is closest to the target grain number within allowed deviation range, and discharges the material in the memory hopper. The invention combines the batch CCD grain counting technology with uncontrollable grain number with combined calculation technology to largely raise the precision and speed on quantitative grain calculation.

Description

The implementation method of quantitative grain counting

Technical field

The present invention relates to a kind of counting grain machine, specifically belong to quantitative grain counting method and device that an a kind of CCD number technology and combination technique combine.

Background technology

Counting grain machine is a kind of counting assembly; conventionally for granular articles such as food, medicine, seed, electronic devices and components, plastic parts, metal partss; go out corresponding packed article according to the packing demand number of setting grain number, this equipment is widely used in the every field such as production, business.For the quantitative package (as 100 pills, 1000 seeds etc.) realizing take amounts of particles as unit can be taked several methods, volumetry, weight method.

Several methods are the most direct methods, the most accurate, but speed is the slowest, investment is maximum.

Several traditional equipment adopt infrared ray sensing mode, this is a kind of consecutive numbers grain method, in the time that material passes through infrared ray curtain, infradred sensor can send ON/OFF signal, an ON/OFF signal just represents a material, by ON/OFF signal is counted, in the time reaching setting quantity, can stop immediately feed.The advantage of this equipment is that the precision of quantitative grain counting is higher, it is slow that but weak point is speed, and can only there is a material by infrared ray curtain at every turn, even if otherwise have more than two material simultaneously by also only sending an ON/OFF signal, cause last count results inaccurate, especially in the situation that single Material Cost is higher, can cause manufacturer's greater loss.

In recent years, along with CCD(Charge Coupled Device, charge-coupled device) development of the universal and corresponding components and parts of technology, also progressively on market, apply by CCD technological development counting grain machine out.CCD is a kind of semiconductor devices, optical image can be converted into digital electric signal, and CCD device is divided into line array CCD and area array CCD two classes by the arrangement mode of its photosensitive unit.Wherein, line array CCD adopts the mode of scanning imagery, and area array CCD adopts the mode of shooting, obtains respectively the image of material, then by image recognition software, material is carried out to several.Linear CCD technology is also a kind of consecutive numbers grain method, can count the material on multiple passages simultaneously, and in the time approaching setting quantity, most of passages that stop, only stay a passage feed, stops feed while reaching setting quantity.Compared with infrared pickoff technology, the cost of this equipment is higher, precision is lower slightly, and speed improves a lot, but still is much slower than weight method.And area array CCD technique is an a kind of batch number method, can makes a video recording to the material that enters image pickup scope, then by image recognition technology, the material in areas imaging be counted.This equipment can obtain the grain number of each batch rapidly, but because the grain number of each batch is uncontrollable, so the grain number that cannot obtain setting.

Volumetry is a kind of method of substitution, and speed is fast, reduced investment, but least accurate.

Weight method is also a kind of method of substitution, if single weight of material has good uniformity, while using it for quantitative grain counting, can obtain higher quantitative accuracy and discharge velocity faster, and equipment price is cheap.But the single weight uniformity of many materials differs greatly in practical operation, for example (,) corn seed because moisture is how many, grain size difference, different its single weight of shape may differ one times, plastic parts because moisture content change, shape error, different its single weight of material density also may differ 20%.When such material uses weighing technology number, precision will reduce greatly.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of implementation method and device of quantitative grain counting, can carry out high speed quantitative counting accurately to the identical or different material of single weight.

For solving the problems of the technologies described above, the implementation method of quantitative grain counting of the present invention, utilizes face battle array camera to carry out several to the material transmitting on the conveyer of material, and by mass transport to corresponding memory bucket, and material grain number struggles against corresponding with memory; The known grain memory bucket of number and the material quantity of conveyer combines to calculating, compare with predetermined target grain number, select within the scope of allowance deviation and approach the combination of target grain number most, and by the material discharge in the memory bucket of choosing and/or conveyer.

The present invention also provides a kind of quantitative grain counting device, comprises control system, feeder, conveyer, face battle array camera, memory bucket and loading head, and wherein feeder, conveyer, face battle array camera and memory bucket are all electrically connected with control system; Described control system comprises image processor, combination computation processor and PLC; Described conveyer is more than two, adopt step wise or oscillatory type to drive, feeder is positioned at the top of conveyer, the below of conveyer arranges at least one deck memory bucket by layer, the discharge end of every conveyer is relative with a top layer memory bucket inlet point that is positioned at its below respectively, each memory bucket of top layer and interlayer is respectively equipped with two side discharging openings, a side discharging opening is relative with the inlet point of lower one deck memory bucket, another side discharging opening is relative with the inlet point of loading head, and the memory bucket of bottom is provided with a discharging opening corresponding with loading head inlet point.

In said structure, described camera is area array CCD camera, is responsible for gathering the graphicinformation of each batch of material on conveyer, and graphicinformation is sent to the material grain number that image processor draws corresponding batch.Or described camera is face battle array CMOS camera, is responsible for gathering the graphicinformation of each batch of material on conveyer, and graphicinformation is sent to the material grain number that image processor draws corresponding batch.

Further, described conveyer moves to each batch of material of known grain number respectively in corresponding top layer memory bucket, by top layer memory bucket, material is successively moved to lower floor's memory bucket again, the grain number information of each batch of material is along with the mobile route transmission of material, and corresponding with the memory bucket of last storage material.

Further, described feeder is the vibra feeder being connected with feed bin, and vibra feeder is provided with inlet, and with control system electrical connection, the switching of the amplitude of described vibra feeder, oscillation frequency, inlet is by control system control.

Further, described conveyer also comprises makes material individual layer be laid on the height controllable register on conveyer, and is driven the step drive device of conveyer intermittent movement by control system control, and described height controllable register is positioned at the top of conveyer.

Further, described conveyer also comprises that controlling conveyer vibration makes material individual layer be laid on the vibrator on conveyer.

Further, described conveyer is moved ahead by the step wise actuating device control being electrically connected with control system.

The present invention adopts a batch number mode, goes out the material grain number on conveyer with area array CCD camera combining image treater number, is temporary in memory bucket, then calculates through combination, selects suitable memory bucket, obtains approaching most a number of setting value; Adopt CCD number to combine and calculate the form combining with memory bucket, the precision of quantitative grain counting and the speed of discharge are obviously better than existing several equipment.

Accompanying drawing explanation

Below in conjunction with accompanying drawing and the specific embodiment, the present invention is further detailed explanation:

Fig. 1 is perspective view of the present invention;

Fig. 2 is device schematic diagram of the present invention;

Fig. 3 is composition of the control system figure of the present invention.

Wherein description of reference numerals is as follows:

1 is feed bin; 2 is feeder; 3 is conveyer; 4 is camera; 5 is memory bucket; 6 is loading head; 7 is image processor; 8 is combination computation processor; 9 is PLC.

The specific embodiment

Quantitative grain counting device of the present invention, comprises control system, feeder 2, conveyer 3, camera 4, memory bucket 5 and loading head 6, and wherein feeder 2, conveyer 3, camera 4 and memory bucket 5 are all electrically connected with control system; Described control system comprises image processor 7, combination computation processor 8 and PLC9, as shown in Figure 2,3.Described conveyer 3 is more than two, adopt step wise or oscillatory type to drive, feeder 2 is positioned at the top of conveyer 3, the below of conveyer 3 arranges at least one deck memory bucket 5 by layer, the discharge end of every conveyer 3 is relative with top layer memory bucket 5 inlet points that are positioned at its below respectively, each memory bucket 5 of top layer and interlayer is respectively equipped with two side discharging openings, a side discharging opening is relative with the inlet point of lower one deck memory bucket 5, another side discharging opening is relative with the inlet point of loading head 6, the memory bucket 5 of bottom is provided with a discharging opening corresponding with loading head 6 inlet points.

Described feeder 2 connects feed bin 1, for disperseing feed to conveyer 3.When conveyer 3 is discharged after material, control system output command makes feeder 2 to conveyer 3 feeds.Feeder 2 is generally the vibra feeder being connected with feed bin 1, and vibra feeder is provided with inlet, and is electrically connected with control system, and the switching of the amplitude of described vibra feeder, oscillation frequency, inlet is by control system control.Also can use other modes such as belt-type or Vibration Storage bin, spiral according to material characteristic.

Described conveyer 3 arranges 4 to 40 as required, and every conveyer 3 has corresponding numbering in control system.

While using area array CCD shooting mode, conveyer 3 can be arranged in circle, linear or polygon.Conveyer 3 can advance forward at every turn set distance, its actuating device can be stepping motor, servomotor, alternating current dynamo, DC machine, cylinder or hydraulic actuating cylinder.Overlapping in order to prevent material, affect several precision, conveyer 3 tops are provided with height controllable register, and overlapping material cannot be passed through.Conveyer 3 is also equipped with oscillatory system, prevents that by vibration material is overlapping.

Described camera 4 is made up of camera lens, CCD photoelectric commutator and fuselage, and it is responsible for absorbing the material image on conveyer 3, and is sent to image processor 7.For obtaining photographic effect clearly, configure suitable illumination, be arranged on the correct position of equipment.

The below of conveyer 3 arranges at least one deck memory bucket 5 by layer, the discharge end of every conveyer 3 is relative with a top layer memory bucket inlet point that is positioned at its below respectively, top layer memory bucket is accepted the material that conveyer is discharged, receive after the discharge instruction of control system, the material in bucket is expelled to lower one deck memory bucket 5 or loading head 6.Memory bucket 5 hierarchal arrangement, are generally 1~5 layer, and material is entered by conveyer 3 or upper strata memory bucket, is expelled to lower one deck memory bucket or loading head 6.Calculate the selected direct discharge of memory bucket 5 to loading head 6 through combination, after lower floor's memory bucket is drained, upper strata memory bucket or conveyer discharge supplement, and so move in circles.Each memory bucket of top layer and interlayer is respectively equipped with two side discharging openings, a side discharging opening is relative with the inlet point of lower one deck memory bucket, another side discharging opening is relative with the inlet point of loading head, and the memory bucket of bottom is provided with a discharging opening corresponding with loading head inlet point.Memory bucket discharging opening door can have spring, also can there is no spring.Discharging opening door can adopt cylinder, stepper motor, servo motor driven.

Loading head 6 can be that hopper can be also set belt or other material-gathering devices, and the material of being discharged by conveyer 3, enters in follow-up wrapping machine or other equipment through loading head 6.

Image processor 7 is made up of image processing circuit and image identification unit.Image processing circuit is divided into analogue signal processor, AD converter, digital signal processor.View data through image processing circuit processing is sent to image identification unit, and image identification unit processing draws the grain number of each batch of material on conveyer, is sent to combination computation processor 8.Image identification unit has material characteristic memory function, dynamic compensation function, noise filtering function and other necessary functions.

Combination computation processor 8 comprises memory device and combination calculating unit.The grain logarithmic data of the each conveyer 3 of memory storage and memory bucket 5.On the conveyer 3 being transmitted by image identification unit, material grain number, is stored in corresponding memory device.In the time that material drains into lower floor's memory bucket 5, a grain logarithmic data for memory storage is also correspondingly transferred to the corresponding memory bucket 5 of lower one deck, by that analogy.Combination calculating unit combines calculating to each memory bucket 5 and the conveyer 3 of known grain number, at C n 1+ C n 2+ C n 3++ C n nplant in combined result, count comparison with the target grain of setting, select the combination that approaches setting value most and meet deviation standard.

PLC9 is the core component of control system, controls the action of feeder 2, camera 4, conveyer 3, memory bucket 5, loading head 6, makes whole system interlock.

The implementation method of quantitative grain counting, comprising: the material transmitting on the conveyer 3 of material is carried out to several, and by mass transport to corresponding memory bucket 5, and material grain number and memory struggle against 5 corresponding; The known grain memory bucket 5 of number and the material quantity of conveyer 3 are combined to calculating, or the memory bucket 5 to known grain number combines calculating, compare with predetermined target grain number, select within the scope of allowance deviation and approach the combination of target grain number most, and the material in the memory bucket 5 of choosing and/or conveyer 3 is discharged.

While using area array CCD mode to carry out several, the material remaining static on conveyer 3 is made a video recording, go out the material grain number under this state by image recognition technology moment number, then discharge material to memory bucket 5 according to control system instruction.In order to improve several precision, can carry out several shooting, then utilize known math modeling filtration, average.Material discharge after, conveyer 3 according to the instruction of control system advance forward set distance after stop.At this moment, feeder 2 is to conveyer 3 feed, enters next shooting, image recognition, the process of several.Also can be to bottom memory bucket discharge for several times, accumulative total grain.

In the present embodiment, as shown in Figure 1, the feeder 2 on top is vibra feeder, is provided with 6 conveyers 3, and every conveyer 3 has upper and lower two-layer memory bucket 5, and every layer is provided with 6 memory buckets 5, has 12 memory buckets 5.6 conveyers 3 are arranged in a linear, and use two Array CCD Camera 4, every corresponding 3 conveyers 3 of pick up camera 4.Every conveyer 3 and each memory bucket 5 have corresponding numbering in control system.

In the time there is no material on conveyer 3, vibra feeder is received the instruction of control system, opens inlet, and simultaneously conveyer 3 is according to the setting certain distance that moves ahead, and vibra feeder disperses feed to conveyer 3.Pick up camera 4 is arranged on the correct position of conveyer 3 tops, and disposes suitable illumination, and the material remaining static on conveyer 3 is made a video recording at least one times, the view data of acquisition is sent to image processor 7 simultaneously.Image processor 7 is processed view data, analyzes the material grain number on each conveyer 3.If upper strata memory bucket 5 be empty, control system is sent instruction to step drive device, and the conveyer 3 one section of setpoint distance that continues to move ahead, makes the material on conveyer 3 enter bottom memory bucket 5, and a number of material is stored to this memory and struggles against in the memory device of 5 correspondences simultaneously.If lower floor's memory bucket 5 is empty, control system is sent discharge instruction to upper strata memory bucket 5, upper strata memory bucket 5 is opened with lower floor and is remembered the corresponding side discharging opening of bucket 5 inlet points, material in memory bucket 5 is drained into lower floor's memory bucket 5, now, the material grain number transfer being stored in upper strata memory bucket 5 corresponding memory devices is stored in the corresponding memory device of lower floor's memory bucket 5.In combination computation processor 8, be preset with target grain number and allowance deviation, in read memory, respectively remember after the material grain number of bucket 5, according to permutation and combination principle, all combinations being carried out to a number calculates, compare with target grain number and allowance deviation simultaneously, select within the scope of allowance deviation and the memory bucket 5 that approaches target grain number most combines.Control system, according to the memory bucket combined information that obtains of combination computation processor 8, is opened the discharging opening of selected memory bucket 5, and material is wherein drained in loading head 6.

Whole feed, several, combination are calculated, discharge process is back and forth carried out under the control of control system.

In addition, the discharge action of conveyer to upper strata memory bucket, upper strata memory bucket to lower floor's memory bucket can be discharge once, can be also several discharge.Above-mentioned ccd video camera also can substitute with cmos camera.

In the above-described embodiments, have 12 memory buckets, according to permutation and combination principle, may have at most planting a grain array closes.Can adjust the grain number of each batch of blanking by the miles of relative movement of amplitude, frequency and conveyer of control and regulation vibra feeder, thereby improve the success ratio of combination.

In legacy equipment, the precision of simple weighing-appliance is 2%, speed is 320000/point; The precision of a simple line array CCD number equipment is 0.1%, and its speed of 1 is about 1000 tablets/time, 5 beats/min, 5000/point, if use 6, is 30000/point.And quantitative grain counting device of the present invention, precision is much higher than weight method and volumetry, the precision of batch number is 0.1%, it is in the majority that 3~5 memory buckets are chosen in combination conventionally, therefore after final combination, quantitative grain counting precision is 0.3%~0.5%, and the speed of discharge is much higher than existing several methods, discharge velocity can reach 30~60 beats/min, and several can reach 240000~480000/point.

By specific embodiment, the present invention is had been described in detail above, this embodiment is only preferred embodiment of the present invention, and it not limits the invention.Without departing from the principles of the present invention; equivalent replacement and improvement that the number of plies, number and layout type, the marker methods etc. of the quantity of those skilled in the art to conveyer and mounting means, memory bucket are made, in the technology category that all should be considered as protecting in the present invention.

Claims (1)

1. an implementation method for quantitative grain counting, is characterized in that:
Utilize face battle array camera to carry out several to the material transmitting on the conveyer of material, and by mass transport to corresponding memory bucket, and material grain number is stored to corresponding memory and struggles against in corresponding memory device;
The known grain memory bucket of number and the material quantity of conveyer combines to calculating, compare with predetermined target grain number, select within the scope of allowance deviation and approach the combination of target grain number most, and by the material discharge in the memory bucket of choosing and/or conveyer.
CN201110214864.XA 2011-07-29 2011-07-29 Realizing method for quantitative grain counting and device thereof CN102390578B (en)

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CN201110214864.XA CN102390578B (en) 2011-07-29 2011-07-29 Realizing method for quantitative grain counting and device thereof
PCT/CN2011/078523 WO2013016881A1 (en) 2011-07-29 2011-08-17 Method and device for quantitative granule counting

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