KR101249472B1 - Grain color sorting apparatus for using full color led - Google Patents

Abstract

According to the present invention, one-chip type full color LEDs and a reflector are used to combine three primary color LED lamps of red, green, and blue into one color. Full Color LEDs enable direct and indirect lighting to effectively filter out grains and other colored objects such as glass or synthetic resins, and some rotten or discolored grains and dissimilar grains. It relates to grain color sorting apparatus using (LED).

Description

Grain color sorting device using full color LED {GRAIN COLOR SORTING APPARATUS FOR USING FULL COLOR LED}

The present invention relates to a grain color sorting apparatus using a full color light emitting diode (LED). Specifically, three primary color LED lamps of red, green, and blue are combined into one. One chip type full color LEDs and reflectors make it easy to implement direct and indirect lighting of the same color as the selected crop, making it more effective (efficient). It is intended to be screened out.

In general, grain color sorting devices are foreign substances contained in grains such as rice, brown rice, glutinous rice, black rice, millet, barley, wheat, and soybeans, such as bad grains, nucleus, yaki, grass seed, black light, colored grain, sand, A RPC (Rice Processing Complex) device that discriminates and separates synthetic resins and glass, and photographs grains (or chips) with CCD cameras, and then determines the color and / or contrast to produce good or foreign matter (including defects). After separating, the foreign matter is separated and removed by spraying the high pressure air momentarily and good and bad.

1 is a schematic configuration diagram of a conventional color sorting apparatus 1, an input hopper 2 into which a screening grain (or grain) is input, and a grain 10 discharged from the input hopper 2. Vibrating part and vibrator (4) and evenly distributed to the entire surface of the discharge chute (3) of the predetermined width by vibrating the grain, the grain freely falling (sliding) between the transparent glass (14, 15) along the discharge chute (3) A light source 5 for transmitting and reflecting light to the light source 10 and a pair of left and right CCD cameras 6 for acquiring an image image by high-speed line scanning the grains reflected by the light source 5. (6a) and the image image obtained by the CCD camera (6) (6a) to determine the good quality and foreign matter (including defective grains), and if there is any foreign matter, the entire system is controlled while outputting a removal signal The controller 7 (grains, operating conditions, environment) and the foreign matter removal scene outputted from the controller 7 Injection nozzle (8) and manifold (9) for instantaneous injection of high-pressure compressed air to separate and discharge foreign matters, and good quality (10a) and foreign matters (10b) and sorting drops generated during the sorting process I) Compression chute (11) (12) (13) for guiding the discharge and movement of (10c), respectively, and the high pressure compression to the manifold (9) and the injection nozzle (8) so as to spray and select the foreign matter It consists of an air compressor (17) for supplying air, the ejector valve (16) installed in the manifold (9) is to open or close the flow path of the compressed air injected at a high pressure instantaneously.

That is, according to the foreign matter removal signal, when the ejector valve 16 is instantaneously opened, compressed air is supplied to the injection nozzle 8 to eject the foreign matter 10b from the normal discharge path while being momentarily injected under high pressure. The foreign substance 10b separated and separated is freely dropped and discharged to the guide chute 11, and the good product 10a is discharged to the other guide chute 12, and falling down from the discharge chute 3 to fall down. ) 10c is discharged to another guide chute 13 and recovered to the input hopper 2 through a conveying means such as a bucket conveyor or a post-sulfurizer and then sorted again.

The conventional grain color sorting apparatus 1 is a light source 5 for supplying (irradiating) ambient light or reflected light of grain, and uses a fluorescent light or cold cathode tube (CCFL), which is a monochromatic white light source, so that the amount of light is difficult to control and a separate reflecting plate is used. By adjusting the angle of reflection of the light source, or adjusting the amount of light or brightness (illuminance), the efficiency of light control is low, so the sorting efficiency is greatly reduced, and foreign matters of the same or similar color as the grain to be sorted cannot be easily identified or sorted. there was.

In addition, the white light, foreign matters of the same or similar color as the grain to be sorted, for example, bad grains, nucleus, yaki, grass seed, gum fire, colored granules, sand, synthetic resin or glass, etc. There was a problem that the screening power is not separated and the correct screening is not made.

In addition, in the case of the fluorescent lamp or cold cathode tube (CCFL) used as the light source 5, it is not only cumbersome to replace the fluorescent lamp or cold cathode tube that emits light similar to grain color, but also requires an inverter for lighting, Compared to the above, there are many problems such as high power consumption, large volume, occupy a lot of installation space, short life span and high failure rate, which greatly increases the maintenance cost.

The present invention is a light source of a grain color sorting device, and is a one chip type pool in which three primary color LED (Light Emitting Diode) lamps of red, green, and blue are combined into one. By using color LEDs and reflectors to increase the amount of light, the direct and indirect lighting of the same color as the selected crop is realized, effectively and effectively screening foreign materials (including defective products) of different colors. The purpose is to make it possible.

Another object of the present invention is to adjust the duty ratio of the power applied to the one chip type (One Chip Type) full color LED to adjust the color and brightness.

Grain color sorting apparatus using the full-color LED of the present invention, the transparent glass is installed on both sides of the grain sorting unit, the CCD camera is installed on both sides of the transparent glass, the red is installed on both sides of the transparent glass to directly illuminate the falling grain ( Red) A first full color LED assembly comprising a plurality of one chip type full color LEDs in which three primary color LED lamps of green blue are combined into one, and are installed on both sides of the transparent glass. One-chip type reflector plate installed in the lower space and three primary LED lamps of red, green, and blue, which are installed on both sides of the transparent glass and indirectly illuminates the falling grain by the reflector. A second full color LED assembly including a plurality of full color LEDs of one chip type, a forward and reverse rotation means for adjusting the inclination of the reflector, an angle sensor for sensing the inclination of the reflector and inputting it to a controller; And a controller for controlling the full color LEDs of the first and second full color LED assemblies.

The first and second full color LED assemblies may include a plurality of full color LEDs arranged on a surface of a printed circuit board at predetermined intervals and a predetermined line, and the full color LEDs may be provided with a positive terminal and a negative terminal (−) supplied with positive power. (-) Terminals to which power is supplied are formed, and a plurality of through holes are formed in the upper and lower portions of the printed board, and an outlet type connector for power supply is mounted on one side of the rear surface of the printed board, and the rear side of the printed board. The current limiting resistor is provided to limit the current applied to the full color LED, characterized in that the heat dissipation means is fixed to the current limiting resistor to radiate heat.

The predetermined interval of the full-color LEDs are maintained at 5mm ~ 18mm to prevent blackening phenomenon.

The present invention uses a one-chip type full color LED and a reflector plate to combine three-color LED lamps of red, green, and blue into one. The direct and reflected illumination light of the same color (Color) has the effect of more effectively (efficiently) to remove grains and foreign matter of different colors, such as glass or synthetic resin, and some rotten or discolored grains and dissimilar grains.

In addition, since the present invention implements light and suitable brightness of the same color as the object to be sorted, grains and foreign matters can be sorted more effectively and efficiently, and the duty ratio of the power applied to the full color LED is adjusted. In this way, since the illumination and brightness of the same color as the grain to be selected are easily achieved, heterogeneous grains having different colors can be effectively and efficiently selected.

In addition, the present invention can control the duty ratio of the pulse applied to the full-color LED to prevent heat generation and power loss due to overcurrent of the full-color LED driver circuit, as well as stable brightness control by dissipating the full-color LED It is possible to produce various colors of light.

In addition, the present invention uses a full-color LED that implements a grain-like color instead of a solid white fluorescent lamp or cold cathode tube (CCFL) as a light source and a reflection plate having a variable inclination to achieve illumination of a color such as grain and appropriate brightness. Not only is it simple, it is not necessary to replace the light source, it is not necessary to turn on the inverter, it is easy to install due to its low power consumption and small volume, and its long life and low failure rate greatly reduce maintenance costs. It is a very useful invention.

1 is a cross-sectional configuration of a conventional invention.
2 is a cross-sectional view showing an example of the present invention.
3 is an enlarged view showing main parts of the present invention as an example;
4 is a perspective view showing a reflector as an example of the present invention.
5: Front view of the 1st, 2nd full color LED assembly shown by one example of this invention.
6 is an enlarged front view of the first and second full color LED assemblies shown as an example of the present invention;
7 is a side view of the first and second full color LED assemblies shown as an example of the present invention.
8 is a controller circuit block diagram showing an example of the present invention.
9: Pre-correction signal shown as an example of the present invention.
10: Signal after correction shown as an example of the present invention.
11 is a signal correction flowchart showing an example of the present invention.
12 is a signal processing process diagram showing an example of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the embodiments of the present invention, the same components as in the drawings are denoted by the same reference numerals as possible, and detailed descriptions of known configurations and functions are omitted so as not to obscure the gist of the present invention.

2 is a schematic diagram of a grain color sorting apparatus 1a of the present invention, a one-chip type in which three primary color LED lamps of red, green, and blue are combined as a light source. By using full color LED and reflector plate that can achieve abundant reflected light amount, it is easy to realize the illumination and brightness of the same color as the grain to be selected. Some rotten or discolored grains and different grains, etc.) can be screened out more effectively (efficiently).

The present invention is a transparent glass 14, 15 provided on both sides of the grain sorting unit of the grain color sorting device (1a), CCD cameras (6) (6a) provided on both sides of the transparent glass (14) (15) and In addition, the transparent glass (14, 15) is installed on both sides to directly illuminate the falling grain (10), but made of a plurality of full-color LED (32) for illuminating at the same color and the appropriate brightness as the grain (10) 1 Indirect illumination of the falling grain 10 by the full-color LED assembly 20 (21) and the reflector plates (24, 25) installed on both sides of the transparent glass (14) (15) and installed in the lower space. A second full color LED assembly (22) (23) consisting of a plurality of full color LEDs (22) (23) and a second full color LED assembly (22) (23) that illuminate at the same color and appropriate brightness as the grain (10). The inclination of the reflectors 27 and 28 and the reflectors 27 and 28 to adjust the inclination so that the visible light of the indirect illumination emitted from the light is optimally illuminated. Reverse rotation means, an angle sensor 42 which detects the inclination of the reflector plates 27 and 28 and inputs it to the controller 7, and the first and second full color LED assemblies 20, 21, 22 and 23. Lighting duty sensor (F) for detecting the lighting and extinguishing state of the control panel) and the duty ratio of the full color LEDs constituting the first and second full color LED assemblies 20, 21, 22, and 23; And a controller 7 which controls to achieve illumination with the color (light) and the amount of light of the same color as the color of the grain 10.

The first and second full color LED assemblies 20, 21, 22, and 23 are formed of red, green, and blue on the surface of the printed board 30 as shown in FIG. 3. One chip type (One Chip Type) full color LED 32 in which primary color LED lamps are combined into one is installed in a predetermined interval and a predetermined line, such as two lines or a plurality of lines.

The predetermined interval between the full color LEDs 32 is preferably 5mm to 18mm so that blackening does not occur. The full color LEDs 32 have respective terminals 33 so that light selected by a combination of red, green, and blue can be emitted to the light emitter 34. The terminal 33 has a (+) terminal to which the (+) power is supplied, and a (-) terminal to which the (-) power is supplied, respectively, and the (-) terminal may be combined into one and constitute a common terminal. have.

A plurality of through holes 31 are formed at upper and lower portions of the printed board 30 to fix them at an installation position, and at one side of the printed board 30, an outlet type connector 47 for power supply is mounted and the outlet type connector 47. The plug connector 48 to which the power supply line 49 is connected is connected.

The full color LEDs 32 are connected in series or parallel, or in a series / parallel mix according to the applied power, and are simultaneously turned on / off or controlled at a duty ratio.

The rear surface of the printed board 30 has a current limiting resistor 36 for limiting the current applied to the full color LED 32 through the connectors 47 and 49 and heat generated from the current limiting resistor 36. The heat dissipation means 35, which is composed of a small aluminum member or the like that emits light, is bonded or mounted and fixed to dissipate heat.

The current limiting resistor 36 is connected to each full color LED 32. Or connected to every full color LED 32 in a unit of a bundle (array unit) composed of several arrays, and fixed to the back surface of the printed board 30 by solder or the like, and radiating means 35 on the surface thereof as described above. It is glued or mounted and fixed to radiate heat.

According to the present invention, one-chip type full color LEDs in which three primary LED lamps of red, green, and blue are combined into one is used to illuminate colors such as grains to be selected. By making it easy to implement (照明) and brightness, it is possible to screen and remove grains and other colors of foreign matter (such as glass or resin and some decayed or discolored grains and dissimilar grains) more effectively and efficiently.

According to the present invention, the duty ratio is adjusted by a pulse width modulation method to achieve illumination of a color such as grain color and appropriate brightness, and the duty ratio is controlled by the controller 7 even if the selection target grain type is changed. By adjusting, the color and brightness according to the type of grain changed can be quickly responded to.

In the present invention, as a method of controlling and sending a control signal to the driver circuit of the full color LED 32, a method of controlling a direct current (DC) continuous current and a method of controlling a pulse current may be applied, but the response speed ( It is based on the pulse width modulation (PWM, pulse width modulation) around 10㎑, which is easy to produce various colors and brightness rather than control the DC continuous current, which has a disadvantage of slow response time and poor resolution. The pulse current control method is preferable.

For example, the pulse width modulation (PWM) method, the output period (Period) of the micro-controller is kept constant, this period is divided into 0 to 255 pulse width of 256 steps to the duty cycle (Duty Cycle) The individual signals can be used to control the output signal step by step from 0% to 100% .When the duty ratio is 0, the full color LED 32 is turned off. When the duty ratio is 255, the full color LED 32 is controlled. The light output of becomes 100%.

In this way, the red, green, and blue three-color LED lamps that constitute one-chip full-color LEDs are controlled to control the duty ratio applied to each of the three-color LED lamps. It is easy to realize the lighting and brightness of (Color).

For example, when adjusting the brightness while maintaining the color of the full color LED 32, by increasing the power duty ratio applied to the red, green, and blue full color LED lamp by the same ratio The brightness is adjusted to the same color.

The present invention not only can reduce heat generation and power loss due to overcurrent of the full color LED driver circuit by controlling the duty ratio of the pulse applied to the full color LED, but also the full color LED 32 is stable by heat dissipation means. Intensity control is possible, so it is possible to produce various colors of illumination.

On the other hand, when using a monochromatic white light source, the camera recognizes the natural brightness of the grain. That is, when the colors of the grains are similar, there are many limitations for the camera to recognize, whereas as in the present invention, one-chip type, in which three primary LED lamps of red, green, and blue are combined into one, is used. Type) In the case of using the full-color LED 32, the light source that matches the characteristics of the grain 10 is strongly illuminated, and the light source that is not is relatively weakly irradiated so that the difference between good and bad, or between good and foreign, can be easily identified. And selection.

For example, if the green beans are green, but the green beans are pink, the red and green color is adjusted by adjusting the duty ratio of the full-color LED 32 to improve the difference between green and pink colors. If you make a little weaker, the defect of pink becomes relatively brighter, so the difference between green of good green beans and pink of poor green beans becomes relatively large. Therefore, good and poor green beans are easily identified and effectively screened and removed due to color difference.

In addition, in the case of rice and synthetic resins having similar sizes and colors but different surface light reflectances, it is difficult to identify or discriminate them by the conventional method. However, in the present invention, the color and light reflectance of rice and synthetic resins are clearly distinguished by color illumination. Is determined.

In the present invention, a red, green, blue three primary color LED lamp and an infrared LED lamp are combined into one chip type (One Chip Type) full color LED, or red and green ) In addition to controlling the color selection light quantity by using one chip type full color LED combined with three primary LED lamps of blue and a separate infrared LED, color or contrast due to the difference in moisture absorption rate Significantly different differences can be used to effectively select crops and foreign objects of the same or similar color or contrast.

For example, grains that have the same or similar color or contrast in grain and foreign matter in visible light, but are different in color or contrast due to the difference in color or contrast due to differences in water absorption in NIR illumination. And foreign matter can be effectively screened.

In addition, in the present invention, the analog signal obtained by line scanning the grain 10 as a subject with a CCD camera (or image sensor) 6, 6a is converted into a digital signal, and then the distortion signal is smoothly corrected to determine whether the grain is poor. You can make it more certain.

On the other hand, when the direction of the camera's line of sight is not parallel to the surface vertical vector of the plane, a perspective effect generally occurs, and the geometrical properties of the pattern contained in the plane are changed by the perspective effect. When a perspective effect occurs, the original image can be modeled by a projective transform, and the geometric invariances that can be applied are cross ratio, concurrency, and collinearity.

That is, the signal correction of the CCD camera 6 (6a) used for grain color sorting is caused by the distortion (perspective effect, etc.) of the camera lens when the original signal of XXX Bit is received from the CCD camera 6 (6a). As shown in FIG. 9, signal distortion occurs, and processing of an image signal with the data of the distorted signal places a lot of restrictions on signal processing. In order to compensate for this, it is necessary to correct the video signal.

Therefore, in the present invention, a high-speed line scan using a raw signal, such as a CCD camera 6, 6a, converts an image image signal of a grain obtained by imaging into a digital signal using an A / D converter, and then an image processing device and an arithmetic device. The digital image image signal is corrected and calculated by using the digital image signal, and the corrected signal is output to correct the image signal generated from the distortion of the lens of the CCD camera 6 (6a) without distortion. As it is possible to reliably sort out both payments, the screening rate is greatly improved.

The present invention is impossible to select when the grain 10 and the color or contrast of the foreign material is the same or similar under white light illumination using a fluorescent lamp or a cold cathode tube (CCFL), such as the grain 10 using the full-color LED 32 The grain 10 and the foreign matter are effectively screened by inputting the image data captured by the CCD cameras 6 and 6a to the controller 7 in the state where roughness is made with color and the same light amount so as to be sorted.

In the above, a pair of left and right CCD cameras 6 and 6a and first and second full color LED assemblies 20, 21, 22, and 23 are transparent glass 14 and 15 spaced apart from each other. Installed on both sides of the symmetrical structure, respectively, the first and second full color LED assembly 20, 21, 22, 23 by the visible light of the same color as the grain 10 directly and reflected to the grain (10) As it is illuminated, it is focused on the grains (grains containing foreign matter) 10 falling into the sorting section between the transparent glasses 14 and 15, and the CCD cameras 6 and 6a are subjects reflected by the same color illumination ( Grain mixed with foreign matter) is input to the controller (7) for image data necessary for screening.

The controller 7 compares the input image data, and if the color difference exceeds the set value, determines that the foreign matter is mixed, and outputs an air injection signal. Accordingly, the ejector valve 16 operates to generate a crossover ( The high pressure air of the air compressor 17 is supplied to the injection nozzle 8 through the manifold 9, and the high pressure air supplied to the injection nozzle 8 is instantaneously injected and the foreign matter 10b. ) Is separated from the normal discharge path and separated, the separated foreign matter (10b) is free fall and discharged to the guide chute 12, the good 10a is discharged to the other guide chute 11, discharge chute ( The falling down 10c falling out of 3) is discharged to another guide chute 13.

Reflector plates 24 and 25 are installed at one side of the lower space where the CCD cameras 6 and 6a are installed, and the visible light irradiated (emitted and emitted) from the second full color LED assembly 22 and 23 to the selection unit. Reflecting helps to maintain proper lighting for screening. The light irradiated from the second full color LED assembly 22 (23) is preconditioned to the same color as the grain 10 by the controller 7.

The inclination of the reflector plates 24 and 25 is controlled by the forward and reverse rotation means.

4 is configured to obtain an optimal amount of reflected light by adjusting the inclination of the reflecting plates 24 and 25 and the reflecting plates 24 and 25, and the shafts on both sides of the long reflecting plates 24 and 25 are formed. The rod is provided on the side plate (not shown), the first spur gear 38 is fixed to one side shaft 37, the second spur gear 41 is fitted to the first spur gear 38, The second spur gear 41 is fixed to the rotating shaft 40 of the motor 39 having a deceleration function and capable of forward and reverse rotation, so that the reflector plates 24 and 25 can be inclined clockwise or counterclockwise. It is composed.

Since the reflector plates 24 and 25 have a long structure, they are light aggregates (lightweight frames) which are empty inside so as not to be bent or bent by their own weight, and have a high height (vertical length) and a wide width (horizontal length) so as to increase the reflection area. ) Is narrow. In addition, reflecting papers 45 and 46, such as a reflecting film and a reflecting sheet, are adhered to the reflecting surfaces of the reflecting plates 24 and 25 to improve reflectance.

Reflected illumination light by the reflector plate 24, 25 and the second full color LED assembly 22, 23 and direct illumination light by the first full color LED assembly 20, 21 are illuminated with sufficient light quantity to the selection unit. Since the amount of reflected light is adjusted while the inclination of the reflector plates 24 and 25 is controlled by the motor 39, an optimal lighting effect may be obtained when the grain 10 is selected.

One side of the first spur gear 38 is coupled to the third spur gear 44 coupled to the shaft 43 of the angle sensor 42, so that the inclination angle values of the reflector plates 24 and 25 are controlled by the controller ( 7) the reflection plates 24, 25 are controlled at the set angle.

That is, the angle sensor 42 is reflected by the selective plate while the reflecting plate 24, 25 is inclined clockwise or counterclockwise by the forward or reverse rotation of the motor 39, the reflector 24 According to the rotation angle of 25, the angle sensor 42 rotates clockwise or counterclockwise to input the rotation angle value to the controller C of the controller 7. The controller 7 inputs the rotation angle. The motor 39 is operated until the value coincides with the set rotation angle value so that the reflector plates 24 and 25 are inclined clockwise or counterclockwise. When the input rotation angle value coincides with the set rotation angle value, (Or if included in the range) the motor 39 is stopped to cause the reflector plates 24 and 25 to stop, and the reflector plates 24 and 25 are secondly adjusted to the same color as the grain 10 at the stopped tilt. Foreign matter by properly reflecting the light irradiated from the full-color LED assembly 22, 23 to the screening unit Is the indirect illumination with grains (10).

The angle sensor 42 may be an encoder, an angular displacement sensor, or a variable resistor in which a resistance value changes in proportion to rotation.

8 is a circuit block of the controller 7 shown as an example of the present invention, a mode selection to the input of the control unit C consisting of a PLC or a central processing unit, etc., ON of the present invention grain color sorting device (ON) Setting unit S composed of a keypad for selecting ON / OFF, a communication mode, inputting and setting various data, and a reset unit for resetting in case of abnormality, and color illumination light. Lighting detection consisting of a CCD camera 6 (6a) for obtaining the color (or color and contrast) of grain and foreign matter, and a photoconductive cell (CDS) or a photo sensor for monitoring the lighting state of the full color LED 32 The sensor F and the angle sensor 42 which detects the inclination value of the reflecting plates 24 and 25 and inputs it to the control part C are connected, respectively.

On the output of the control unit C, a display unit D which displays various operation states, operation modes, set values, present values, operation states of various devices, and various abnormalities, and a full color LED 32 in a pulse width modulation method. The high pressure air is applied to the PWM module (P) and the injection nozzle (8) to control the duty ratio of the power (or pulse) to be applied to achieve the color of grain-like color and illumination of appropriate brightness. The ejector valve 16 which opens and closes the ejector so that it can be injected, the vibrator 4 which vibrates the grain input hopper 2, and the motor 39 which controls the inclination of the reflector plates 24 and 25 are connected, respectively. .

The output of the PWM module P is connected to the LED driver L for supplying driving power to the plurality of full color LEDs 32, and the output of the LED driver L to the plurality of full color LEDs 32. The first and second full color LED assemblies 20, 21, 22 and 23 which are constructed are connected.

For example, in the pulse width modulation (PWM) method, the output period (Period) of the PWM module (P) is kept constant, and the period is divided into 0 to 255 to divide the pulse width of 256 steps Duty Duty (Duty) By individual control by cycle), the output signal can be controlled step by step from 0% to 100% .When the duty ratio is 0, the full color LED 32 is turned off, and when the duty ratio is 255, the full color LED is The light output of the (32) is 100%, and in this way, the red, green, and blue primary LED lamps that constitute one chip type full color LED are applied. By controlling the duty ratio, the illumination and brightness of the same color as the grain to be sorted can be easily realized.

An input / output unit of the control unit C includes an operation program and a CCD camera 6, 6a, first and second full color LED assemblies 20, 21, 22, 23, motor 39, and ejector. A memory unit M, which stores control programs for controlling various actuators such as the valve 16, the vibrator 4, and the like, and a network having a communication interface for controlling, communicating with, or exchanging data with the main controller. Are respectively connected. In the network, a plurality of CCD cameras 6, 6a and first and second full color LED assemblies 20, 21, 22, 23, and the like are remotely controlled, and a plurality of grain color sorting devices 1a are provided. The main controllers that control the controller are connected and remotely controlled.

Although not shown in the drawing, a drive drive for driving various actuators is connected to the output of the controller C, and the setting unit S may use a conventional keypad, a switch group, a touch screen, or the like.

The data of the memory unit is read and updated by the control unit C, and used for various control, display, and alarm of the actuator, and newly created or inputted data, modified data, operation data, etc., through the controller or the main controller are connected to the communication interface. It is sent and received through the network.

The display unit (D) indicates a power indicator indicating power supply status, various sensors, actuators, etc. are in operation, and is composed of a liquid crystal display (LCD), seven segments, light emitting diodes, or the like depending on the situation. The display may be configured to facilitate the use.

In the present invention, the CCD cameras 6 and 6a provided at both sides are closed to the outside by the cases 18 and 19 so that they are not disturbed or influenced by external visible light.

The air compressor (17) supplies high pressure compressed air to the manifold (9) and the injection nozzle (8) so that the foreign matter can be selected by spraying the foreign matter, the manifold (9) under the control of the controller (7) The ejector valve 16 is installed to open or close the channel of the manifold 9.

The foreign matter is detected by the CCD camera 6, 6a and the full color LED 32, and the ejector valve 16 is opened by the controller 7 and supplied to the injection nozzle 8 via a hose. As the air is momentarily injected under high pressure, the foreign matter is separated from the normal discharge path.

Separated foreign matter is free fall and discharged to the guide chute 11, the good grain (10a) is discharged to the other guide chute 12, falling down the discharge chute (3) falling down (c) (10c) ) Is discharged to another guide chute 13, or discharged to another guide chute 13 and then recovered to the input hopper (2) through a conveying means, such as a bucket conveyor or a post-sulfurizer and then sorted again. .

In the present invention, the amount of light required for sorting grains 10 is obtained by direct illumination light by the first full color LED assembly 20, 21, and the grain (by reflected illumination light by the second full color LED assembly 22, 23). Indirect illumination of 10) equalizes the brightness of the illumination light reflected on the grains 10 and achieves uniform illumination.

In addition, the present invention, by selecting the grain 10 by adjusting the color and the color according to the characteristics and wavelengths of the grain 10 and the same color when the grain is selected, the distortion of the signal by using direct light and indirect reflected light at the same time The foreign matter and grain (10) selection power is greatly improved.

In the present invention, the reflector plates 24 and 25 determine the basic level of the amount of light received by the CCD cameras 6 and 6a according to the type of grain 10. The signal of grain and foreign matter is formed. In order to see the grain 10 brightly, the reflecting plates 24 and 25 may be adjusted so that the amount of reflected light may increase.

11 is a flowchart illustrating an example of a signal processing process of the present invention, in which a raw signal, for example, an image image signal of a subject (grain) obtained by a high-speed line scan CCD camera is input (step S1), A Converting the video image signal into a digital signal using the / D converter (step S2), correcting and calculating the digital image video signal using the image processing device and the calculation device (step S3), and outputting the corrected signal It is a step (step S4) to perform.

On the other hand, in the signal correction of the camera used for grain color sorting, when the original signal of XXX Bit is received from the CCD line scan camera, the distortion of the signal occurs as shown in FIG. 9 due to the distortion of the camera lens. When processing an image signal with the data of the signal has a lot of restrictions in the signal processing, in the present invention, to compensate for this, by converting the original signal obtained by the camera to a digital signal and then using an image processing apparatus and a computing device The signal is corrected by a method of comparing with a reference value, and the corrected signal is output, so that the grain determined to be defective can be selectively removed.

FIG. 12 illustrates a signal processing procedure of an image processing apparatus that converts a raw signal into a digital signal and then compares and corrects the original signal.

In the signal correction method, a corrected signal is obtained by arithmetic processing a signal of XXX Bit converted into a digital signal by the A / D converter as in the following equation (1).

XXX Bit correction signal = maximum value × reference value / original signal ----------------- Equation (1)

The XXX bit correction signal (16 bit (2XXX)) is stored in a memory (RAM) and multiplied by the original signal (10 bit (XXX)) converted using a multiplier (X) as shown in Equation (2). The accumulator Y outputs the corrected signal 26 bit (ttt) / YYY bit. The accumulator Y accumulates and outputs the output of the multiplier X.

The memory (RAM) generates an address using a clock frequency, and in another memory (RAM), data of an original signal (10 bit (XXX)) and a correction signal (16 bit (2XXX)) is stored, and a reference value. This is input, stored, and read out for use in signal processing.

XXX Bit Corrected signal = Corrected signal × Original signal / Maximum value --------------- Equation (2)

In this case, the maximum value means the maximum value that the XXX bit can have, and the original signal refers to the original signal coming from the CCD line scan camera, and the reference value is the value of the signal corrected to a specific value desired by the user. .

Of course, if the original signal changes, the corrected signal also changes at the same rate.

At this time, note that the reference value cannot exceed the minimum point of the original signal. This is because when the reference value exceeds the minimum point of the original signal, the correction signal is distorted due to the signal overflow phenomenon.

The signal (26bit (ttt) / YYY bit) corrected by XXX Bit is output through the accumulator (Y), and the output signal is a high-quality injection method of instantaneously operating the ejector of the color sorter to inject high-pressure grains. And removed.

In the present invention, the signal distortion caused by the distortion of the camera lens (mainly the perspective effect) is removed, and the image processing is performed with the corrected signal as shown in FIG.

Field Programmable Gate Array (FPGA) used in the image processing and operation of the present invention is a semiconductor device including a programmable logic element and a programmable internal line, and the programmable logic element is an AND, OR, XOR, NOT, more complex decoder or calculation function. Basic logic gate functions, such as the combinatorial function, can be duplicated and programmed, including memory elements with simple flip-flops or more complete memory blocks, field reprogramming of error correction, and low initial development costs. There is an advantage.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It is self-evident to those of ordinary skill.

(1a)-Grain Color Sorter (2)-Feeding Hopper
(3)-emission chute (4)-vibrator
(6) (6a)-CCD Camera (7)-Controller
(9)-Manifolder (10)-Grain
(10a)-goods (10b)-foreign material
(10c)-Falling Song (11) (12) (13)-Guidesuit
(14) (15)-clear glass (16)-ejector valve
(20) (21) (22) (23)-Full Color LED Assembly (24) (25)-Reflector
(30)-Printed Board (31)-Through
(32)-full color LED (33)-terminal
(34)-Light Emitter (37)-Stick
(39)-Motor (47) (48)-Connector
(49)-Power Line (C)-Control Section
(D)-Indicator (F)-Light sensor
(L)-LED Driver (M)-Memory
(P)-PWM module (S)-Settings

Claims (3)

delete Transparent glass is installed on both sides of the grain sorting unit, CCD cameras are installed on both sides of the transparent glass, LED assembly is installed on both sides of the transparent glass and directly illuminates the falling grain, reflecting plate is installed on both sides of the transparent glass and installed in the lower space, LED assemblies installed on both sides of the transparent glass to indirectly illuminate the falling grain by the reflector, forward and reverse means for adjusting the inclination of the reflector, an angle sensor for sensing the inclination of the reflector and inputting it to a controller, and the LED of the LED assembly. In the grain color sorting device comprising a controller for controlling the;
The LED assembly includes:
One-chip type full color LEDs, which are installed on both sides of the transparent glass and directly combine red, green and blue three-color LED lamps that directly illuminate falling grains, A first full color LED assembly configured; And
One-chip type full color with red, green, and blue primary LED lamps installed on both sides of the transparent glass and indirectly illuminating the falling grains by the reflector. A second full color LED assembly comprising a plurality of LEDs; ego,
The first and second full color LED assembly,
On the printed board surface, a plurality of full color LEDs are arranged in a predetermined interval and a predetermined line.
The full color LED is formed with a (+) terminal supplied with (+) power and a (-) terminal supplied with (-) power, respectively.
A plurality of through holes are formed in the upper and lower portions of the printed board,
An outlet type connector for power supply is mounted on one side of the frit board,
A current limiting resistor is installed at the rear of the printed board to limit the current applied to the full color LED.
Grain color sorting apparatus using a full-color LED, characterized in that the heat dissipation means is fixed to the current limiting resistance to radiate. delete

Images