JP2002296190A - Method and device for detecting degenerated part of object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for detecting a degenerated part of an object. SOLUTION: An ultraviolet light B of a specified wavelength which is emitted from an irradiator 4 is poured on an orange A placed on a placement part 2. A fluorescent material D deposited at a degenerated part Ab of the orange A is excited to cause a blue-white fluorescence, reflecting or radiating a specific reflection light C. The reflection light C is measured with a detecting device 5, and a measurement information is outputted to an image processing device 6. A CPU 10 of a control device 9 compares and calculates a measurement information outputted from the image processing device 6 with a comparison information stored in a comparison information storing device 8, to judge presence, size, form, development, and the like of the degenerated part Ab. The judging result is compared with a rank classification information stored in the comparison information storing device 8, for, individual, comprehensive judgement for rank classification of the orange A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, oranges,
Crops such as apples, eggplants, cucumbers, carrots (including fruit and vegetables)
The present invention relates to a method and apparatus for detecting a deteriorated portion of an object used for measuring a predetermined item of the detected object when sorting the detected object such as fish, shellfish, foods, and the like.

[0002]

2. Description of the Related Art Conventionally, as a method of detecting a predetermined item of oranges in the above-described example, for example, light emitted from a light source is irradiated on the oranges, and reflected light reflected by a normal portion and a deteriorated portion of the oranges is imaged. Take an image with a camera. There is a method or an apparatus that compares image information (detection information) captured by the imaging camera with comparison information stored in a determination apparatus in advance to determine a predetermined item of oranges.

[0003]

However, if the above-mentioned oranges are left for a long period of time, or if the temperature change is remarkable, the freshness of the oranges will be reduced, and rot (deterioration) of the parts which have been damaged or scratched will proceed. At the time of detection, when light emitted from the light source is irradiated on the normal portion and the altered portion of the orange, the reflectance, lightness, darkness, color, etc. of the portion become substantially equal in the visible region, and the altered portion has There is a problem that it is difficult to identify and determine a predetermined item of an object to be detected accurately because it is difficult to specify and determine the boundary and the boundary between the normal part and the deteriorated part is unclear.

In view of the above problems, the present invention excites a substance deposited on a deteriorated portion of an object to be detected by detection light having a specific wavelength, and detects reflected light reflected or emitted by the material on the deteriorated portion. Accordingly, it is an object of the present invention to provide a method and apparatus for detecting a deteriorated portion of a detected object, which can accurately and reliably detect a predetermined item of the detected object, and which can improve the detection accuracy. .

[0005]

According to the first aspect of the present invention,
On the outer surface of the object to be detected, irradiate detection light having a specific wavelength for exciting a substance precipitated in the deteriorated portion of the detected object, and detection information of reflected light reflected by the material of the deteriorated portion. ,
The method is characterized in that the method is a method of detecting a deteriorated portion of an object to detect a predetermined item by comparing with predetermined comparison information.

According to a second aspect of the present invention, there is provided a detection method for irradiating an outer surface of an object with a detection light having a specific wavelength necessary for exciting a substance deposited on a deteriorated portion of the object. Light irradiation means, reflected light detection means for detecting reflected light emitted by the substance excited by the detection light, and comparison information storage means for storing comparison information for determining a predetermined item of the detected object, A deteriorated portion detection apparatus comprising: a quality determination unit that compares measurement information output from the reflected light measurement unit with comparison information stored in the comparison information storage unit to determine a predetermined item of the detected object. It is characterized by being.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the specific substance is a fluorescent substance which is excited when irradiated with detection light having the specific wavelength. It is a method or apparatus for detecting a deteriorated portion of an object.

According to a fourth aspect of the present invention, in addition to the configuration of the first or second aspect, the detection light is set to a wavelength in a range of approximately 300 nm to approximately 400 nm or in the vicinity of the detection light. The method is characterized in that it is a method or a device for detecting a deteriorated portion thereof.

According to a fifth aspect of the present invention, there is provided a method or a method for detecting a deteriorated portion of an object to be detected, wherein the detection light comprises ultraviolet light having a specific wavelength. The device is characterized in that:

[0010]

According to the present invention, the object to be detected is irradiated with the detection light having a specific wavelength to excite the substance deposited on the altered part of the object, and the excited substance is reflected or reflected. Since the reflected light emitted is detected, not only the identification and discrimination of the altered part becomes easy, but also the boundary between the normal part and the altered part of the object to be detected becomes clear or clear, so that the reflected light is output from the reflected light detecting means. Based on the detection information, a predetermined item of the detected object can be accurately and reliably detected, and the detection accuracy can be improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawings show a method and a device for detecting a deteriorated portion of an object used for measuring a predetermined item of orange, which is an example of the object, and show the deteriorated portion detection apparatus in FIGS. 1 and 2. The detection device 1 includes a mounting portion 2 that mounts (holds) oranges A in a stable posture before measurement, a detection sensor 3 that detects that the oranges A are mounted on the mounting portion 2,
Ultraviolet light B (or ultraviolet light) having a specific wavelength
Irradiating device 4 for irradiating the outer surface of citrus, and normal part Aa of mandarin A
Device 5 that measures reflected light C reflected by a laser beam or a deteriorated portion Ab (rot portion) and outputs the measurement information.
An image processing device 6 that performs image processing of measurement information (image information) of the normal part Aa and the altered part Ab of the orange A based on the measurement information output from The control unit 9 is configured to compare the comparison information stored in the comparison information storage device 8 and compare and determine predetermined items such as the presence or absence and size of the altered part Ab.

The above-mentioned oranges A include a fluorescent substance D which is excited (fluoresced) when receiving ultraviolet light B emitted from an irradiating device 4 such as a black light. When a part rots (degrades) or rots naturally due to a decrease in freshness, juice is precipitated from the decayed (destructed) cells, and various germs and molds are generated using the juice as a nutrient source.

In addition, when ultraviolet light B having a specific wavelength is applied to water deposited on a rotting part or a damaged part, a plurality of types of double bond and single bond fluorescent substances D, which fluoresce pale, are dissolved out. Therefore, by detecting the presence or absence of the fluorescent substance D (or fruit juice), presence or absence, size, shape,
The degree of progress can be measured.

In the pericarp of mandarin orange A, for example, the double bond Parillalde detected by ion chromatography is used.
hyde and single bond Citral are included,
(E) -2-Pentenal, (E) -2-Hexenal, and Furfural are included, and the fluorescent substance D fluoresces pale when irradiated with ultraviolet light B having a specific wavelength. Parillalde
Hyde fluoresces when irradiated with ultraviolet light B in the range of approximately 300 nm to approximately 400 nm, and Citral fluoresces when irradiated with ultraviolet light B having a wavelength shorter than the above-described wavelength.

FIG. 3 is a block diagram showing a control circuit of the deteriorated portion detecting device 1. The control device 9 comprising, for example, a personal computer or the like includes a CPU 10, a ROM 11,
A RAM 12 is built-in, and the CPU 10 includes a detection sensor 3, an irradiation device 4, a detection device 5, an image processing device 6, a display device 7, and a comparison information storage device 8 in accordance with a program stored in the ROM 11. Control of driving and stopping of the motor. At the time of measurement, the RAM 12 irradiates the orange A with the ultraviolet light B emitted from the irradiating device 4, and receives the reflected light C reflected by the normal portion Aa and the altered portion Ab of the orange A by the detecting device 5. Then, the detection information output from the detection device 5 is stored.

The mounting section 2 is formed in a size and a shape in which one orange A is mounted (held) in a stable posture, and the measurement of the reflected light C reflected by the orange A is not hindered.
The hue and the material are set such that the contrast between the mounting surface irradiated with the ultraviolet light B and the oranges A mounted on the mounting surface becomes clear. Further, the mounting surface of the mounting portion 2 may be formed in a concave shape, may be formed of a member having flexibility, or the oranges A may be held by a support member, an arm, or the like. However, the present invention is not limited to this.

The above-mentioned detection sensor 3 is constituted by, for example, a reflection-type photoelectric sensor or the like, and detects that the orange A is placed at a fixed position of the placement section 2 substantially corresponding to the measurement range of the detection device 5. , And outputs the detection signal to the control device 9. Further, as another example of the detecting means instead of the photoelectric sensor, for example, a limit switch, a proximity switch, or the like may be used.

The above-mentioned irradiation device 4 is constituted by a light source (for example, a commercially available black light having a power consumption of about 10 W) for projecting ultraviolet light B having a specific wavelength. The outer surface of the oranges A (for example, the upper surface and side surfaces,
One or a plurality thereof is provided so as to face the bottom surface). For example, it is disposed so as to face the upper surface of the orange A placed on the mounting portion 2 and the side surface of the orange A (a plurality of positions spaced at a predetermined interval around the orange A). And the irradiation device 4
Emits ultraviolet light B having a specific wavelength necessary to excite (fluoresce) the fluorescent substance D deposited on the altered part Ab of the orange A, which emits light with power supplied from a power supply (not shown). A is irradiated.

The above-mentioned ultraviolet light B is applied to a fluorescent substance D (for example, Pa
rillaldehyde, (E) -2-Pentenal, (E) -2-Hexenal, Fur
fural, etc.), for example, approximately 30
The wavelength is set to a specific wavelength included in (or near) 0 nm to approximately 400 nm or a short wavelength suitable for detecting a specific fluorescent substance D (Citral). In addition, short wavelength ultraviolet light B
May be used together or alone.
In addition, the wavelength may be changed to a wavelength (for example, UV-A approximately 300 nm or less, approximately 400 nm or more) suitable for detecting the fluorescent material D according to the type and characteristics of the fluorescent material D.

As another example of the illuminating means in place of the above-described black light, for example, a halogen lamp, a xenon lamp, a tungsten lamp, a fluorescent lamp, a light emitting element, or the like may be used. In addition, for example, depending on a substance (for example, fluorescent substance D) deposited on a deteriorated portion of agricultural products such as oranges A and apples, detection light (for example, infrared light or infrared light) having a specific wavelength suitable for detecting (fluorescent) the substance. X-rays, other rays, etc.)
May be used.

The above-mentioned detecting device 5 is composed of, for example, a color or monochrome imaging camera (CCD camera) having a sensitivity required to receive the reflected light C, and
One or more are arranged facing the outer surface (for example, the top surface, the side surface, and the bottom surface) of the orange A to be irradiated. In addition, when the above-described ultraviolet light B is irradiated on the orange A, the detection device 5 measures (receives) the reflected light C reflected by the normal portion Aa and the altered portion Ab of the orange A, and detects the measured portion. The image is output to the image processing device 6 as measurement information. Also,
As another example of the measuring means instead of the detecting device 5 (imaging camera), for example, an image element or the like may be used.

The image processing device 6 described above binarizes the measurement information (image information) of the normal portion Aa and the altered portion Ab of the orange A output from the detection device 5 and converts the measurement information into a control device 9. (Determination device). The CPU 10 built in the control device 9 compares the measurement information output from the detection device 5 with the comparison information stored in the comparison information storage device 8 to calculate the normal portion Aa and the altered portion Ab of the orange A. From the reflectance, brightness, and ratio of the reflected light C to be reflected, the altered portion Ab
The size, shape, degree of progress, etc. are determined, and the determination result is compared with the rank information stored in the comparison information storage device 8 to individually determine the rank (predetermined item) of the orange A individually. I do.

The above-mentioned comparison information storage device 8 is, for example, a PO
It is configured by a storage device that can write and read information such as RM, and stores comparison information for comparing the presence or absence and the degree of progress of the altered part Ab. That is, before the start of the measurement, the ultraviolet light B emitted from the irradiation device 4 is irradiated on the normal orange A before rot (deterioration) or damage,
When the reflected light C reflected by the orange A is received by the detection device 5, the measurement information output from the detection device 5 is stored as normal comparison information.

The above-mentioned display device 7 is composed of, for example, a liquid crystal type or CRT type display, monitor, etc., and information (image information) received (imaged) by the detection device 5, processing status of the control device 9, judgment results and the like. Is displayed.

The illustrated embodiment is configured as described above, and a method and operation for measuring the decay of oranges A by the altered part detecting device 1 will be described below. First, FIGS. 1 and 2
As shown in, when the detection sensor 3 detects oranges A placed on the placement unit 2, the CPU 10 of the control device 9
Based on the detection by the detection sensor 3, the outer surface of the orange A is irradiated with ultraviolet light B (ultraviolet light) having a specific wavelength emitted from the irradiation device 4.

At this time, as shown in FIG. 4, the fluorescent substance D (for example, Parillaldehyde, Citra
l, (E) -2-Pentenal, (E) -2-Hexenal, Furfural, etc.)
Is excited by ultraviolet light B having a specific wavelength to cause bluish fluorescence, and reflects or emits a specific reflected light C. At the same time, as shown in FIG. 4, the reflected light C reflected by the normal portion Aa and the altered portion Ab of the orange A is measured by the detection device 5, and the measurement information is output to the image processing device 6.

On the other hand, the CPU 10 compares the measurement information output from the image processing device 6 with the comparison information stored in the comparison information storage device 8 to determine the presence or absence, the size, the shape, and the progress of the altered part Ab. The condition is comprehensively determined. For example, A
If b does not exist or its existence is not confirmed, and the deteriorated portion Ab is small and equal to or less than the reference value, it is determined that the portion is normal. If the altered part Ab whose existence has been confirmed is largely equal to or larger than the reference value, it is determined that the quality is low, defective, or out of specification. The above-described determination result is compared with the rank information stored in the comparison information storage device 8 to determine the rank of the orange A (for example, the grade of excellent, excellent, good, and the grade of L, M, S, nonstandard). , Etc.) are individually and comprehensively determined, and sorting processing is performed for each class based on the determination result.

As described above, the ultraviolet light B having a specific wavelength emitted from the irradiation device 4 is irradiated on the oranges A mounted on the mounting portion 2 and deposited on the altered portions Ab of the oranges A. The excited fluorescent substance D is excited, and the reflected light C reflected or emitted by the excited fluorescent substance D is detected by the detection device 5, so that not only the identification and discrimination of the altered part Ab becomes easy, but also the orange A Since the boundary between the normal part Aa and the deteriorated part Ab becomes clear or clear, it is necessary to accurately and reliably detect a predetermined item of oranges A based on the detection information output from the detection device 5 and the image processing device 6. And the detection accuracy can be improved.

FIG. 5 is a diagram showing the change of the oranges A
Shows another altered part detection method of continuously measuring while transporting a predetermined item, and the ultraviolet light B emitted from the irradiation device 4 is shown.
Are conveyed to the oranges A conveyed by the conveyor 13 in the order of conveyance, the reflected light C reflected by the oranges A is measured by the detection device 5, and the measurement information is transmitted to the image processing device 6.
After the image processing, the presence / absence, size, shape, progress, etc. of the altered portion Ab are comprehensively determined by the control device 9 based on the measurement information output from the image processing device 6, and thus are substantially the same as those in the above-described embodiment. Equivalent effects can be obtained. In addition, the operation of measuring a large number of oranges A can be performed continuously, and the efficiency of the operation can be improved.

Further, Japanese Patent No. 2911801 and Patent 282
It is also possible to measure a predetermined item while reversing the front and back by the transport device of No. 4046.

In the correspondence between the structure of the present invention and the above-mentioned embodiment, the detection object of the present invention is applied to the agricultural products such as oranges, apples, eggplants, cucumbers, carrots, fish and shellfishes, foods, etc. of the embodiment. Correspondingly, hereinafter, the substance is a fluorescent substance D (Parill
aldehyde, Citral, (E) -2-Pentenal, (E) -2-Hexena
l, Furfural, etc.), the detection light corresponds to the ultraviolet light b, the detection light irradiation means corresponds to the irradiation device 4, the reflected light detection means corresponds to the detection device 5, and the comparison information storage means. Is
Corresponding to the comparison information storage device 8, the quality judgment means includes a control device 9, a CPU 10 built in the device, and a CPU 1
Although the present invention corresponds to the program stored in 0, the present invention is not limited to only the configuration of the above-described embodiment.

The above-described altered part detection apparatus 1 is disclosed in, for example,
By combining with a transfer device such as 911801 and Japanese Patent No. 2824046 or a rotation measuring device disclosed in Japanese Patent Application No. 2000-72166, oranges A can be used for measuring predetermined items on both front and back surfaces.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a method for detecting a deteriorated portion of orange using a deteriorated portion detection device.

FIG. 2 is a side view showing a measurement state of oranges.

FIG. 3 is a control circuit block diagram of a deteriorated portion detection device.

FIG. 4 is an enlarged sectional view showing an irradiation state of ultraviolet light and a reflection state of reflected light.

FIG. 5 is a side view showing another method for detecting a deteriorated portion while measuring oranges while transporting the oranges.

[Explanation of symbols]

 A: oranges Ab: deteriorated part B: ultraviolet light C: reflected light D: fluorescent substance …Control device

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F065 AA11 AA54 AA61 BB05 BB15 BB24 CC00 DD03 FF00 FF04 FF26 GG02 GG03 GG22 JJ03 JJ05 JJ26 MM03 QQ04 QQ25 RR08 SS13 UU01 UU06 2F067 AA62 AA01 KK RR RR30 2G043 AA03 BA14 CA05 EA01 FA05 GA07 GB19 KA01 KA03 LA01 LA03 NA05 NA06 2G051 AA05 AB02 AB20 BA05 BA06 BB02 CA01 CA04 CA07 CB01 DA06 EA12 EA14 EB01

Claims (5)

[Claims] 1. An outer surface of an object to be detected is irradiated with a detection light having a specific wavelength for exciting a substance deposited on a deteriorated portion of the object, and a reflection of the substance in the deteriorated portion is reflected. A method for detecting a deteriorated portion of an object to detect a predetermined item by comparing light detection information with predetermined comparison information. 2. A detection light irradiating means for irradiating an outer surface of an object with a detection light having a specific wavelength necessary to excite a substance deposited on a deteriorated portion of the object, Reflected light detecting means for detecting reflected light emitted by the substance excited by the detection light, comparison information storage means for storing comparison information for determining a predetermined item of the detected object, and reflected light measuring means A deteriorated portion detection device comprising: a quality determination unit that compares the output measurement information with comparison information stored in the comparison information storage unit to determine a predetermined item of the detected object. 3. The method according to claim 1, wherein the specific substance is a fluorescent substance which is excited when irradiated with the detection light having the specific wavelength.
3. A method for detecting a deteriorated part of an object to be detected according to claim 3. 4. The method according to claim 1, wherein the detection light is set to a wavelength in the range of about 300 nm to about 400 nm or in the vicinity thereof. 5. A method according to claim 1, wherein said detection light is composed of ultraviolet light having a specific wavelength.