KR20150097092A - Apparatus and method for determining cracked eggs by driving vibration - Google Patents

Abstract

The present invention relates to an apparatus and a method for determining a wave field without striking an egg in a vibration-driven manner. An apparatus for determining a broken line includes: a vibration driver for applying vibration to the egg in contact with the egg; A vibration response detector for detecting a vibration response signal corresponding to the vibration applied by the vibration driver from the egg; A judging section for judging whether or not the egg has a wave based on at least one of a resonance frequency and a Q factor (Quality factor) of the vibration response signal detected by the vibration response detecting section; And a conveying portion for moving the vibration driving portion and the vibration response detecting portion or the egg relative to each other.

Description

[0001] APPARATUS AND METHOD FOR DETERMINING CRACKED EGGS BY DRIVING VIBRATION [0002]

The present invention relates to an apparatus and method for determining a corrugated line. More particularly, the present invention relates to an apparatus and method for determining a wave field in a vibration driving manner without striking an egg.

In the case of producers of eggs, the quality evaluation and grading process of the eggs is an important factor in determining the sales of the producers. For high-quality eggs, it is very necessary to recognize proper value through accurate screening. The egg comprises a plurality of layers of protective layer to protect the inner material and the protective layer surrounds the outermost portion and is generally composed of a shell called an egg shell and an outer membrane and an outer membrane attached to the inside of the egg shell, And an inner membrane surrounding the inner membrane. When used in this specification, it is referred to as an egg shell, including egg shell outer shell and egg shell inner shell. It is very difficult to distinguish eggs from naked eyes because egg shells that have cracked egg shells but do not damage egg shells and internal substances have not leaked.

Currently, one conventional method of inspecting the cornea is to light the eggs and visually inspect them. In this method, when the egg is exposed to light for a long time, the fatigue of the eyes is increased, and there is a possibility of a false face, and it is difficult to detect a fine wave angle. In addition, this method does not guarantee the objectivity of quality because the judgment is made by subjectivity of the inspector.

Another conventional method for detecting the wave trail is Korean Patent Registration No. 10-1139805, filed on August 26, 2009, entitled " System and Method for Detecting Quality "

Referring to FIG. 1, there is shown a prior art striking wave detection system as disclosed in Patent No. 10-1139805. In the system of the above-mentioned Japanese Patent No. 10-1139805, while the egg to be inspected is rotated, the equatorial portion or the buttock portion of the egg is struck many times using the striking rod, the sound wave generated from the struck egg is taken as a microphone, To assess the quality of eggs, especially whether they are crustal.

The method of judging the waves using the conventional striking method is as follows. (1) Since the noise is collected not only from the desired sound signal in the microphone but also from the surrounding microphone, the signal received from the microphone becomes inaccurate. (2) When the eggs are struck simultaneously, the sound waves are transmitted not only to the microphones but also to the surrounding microphones, thereby causing discrimination errors. (3) Since the stroke distance of the striking rod varies depending on the size of the eggs, it is difficult to hit with a certain force, and the strength of the signal varies depending on the size of the eggs. In addition, (4) when selecting multiple eggs at the same time in order to select multiple eggs at the same time, it is necessary to install all of the striking rods and microphones in a narrow area, which complicates the device configuration, .

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus and a method for simultaneously determining whether or not a large amount of eggs are shaken. More specifically, it is an object of the present invention to provide an apparatus and method for determining whether or not the egg is crushed by applying vibrations and detecting a vibrational response thereto, without hitting the egg using a striking rod.

A first embodiment of the present invention provides an apparatus for determining a crust. The apparatus includes a vibration driver for applying vibration to the egg in contact with the egg; A vibration response detector for detecting a vibration response signal corresponding to the vibration applied by the vibration driver from the egg; A judging section for judging whether or not the egg has a wave based on at least one of a resonance frequency and a Q factor (Quality factor) of the vibration response signal detected by the vibration response detecting section; And a conveying portion for moving the vibration driving portion and the vibration response detecting portion or the egg relative to each other.

In the second embodiment of the present invention, the vibration driving unit and the vibration response detecting unit are implemented as an integral module, and the integral module converts the electric signal into vibration to apply vibration to the egg, Signal from the egg.

In the third embodiment of the present invention, the vibration driving unit and the vibration response detecting unit are both composed of a magnetic body and a coil, applying vibration to the egg using an electromagnetic force generated when a current flows through the coil, Wherein a vibrational response in one of the eggs is configured to generate an electrical signal by an electromagnetic force; Or a piezoelectric element so that an electric signal is converted into a vibration of the piezoelectric element to apply vibration to the egg and a vibration response in the egg corresponding to the vibration generates an electric signal by a piezoelectric effect.

The fourth embodiment of the present invention is characterized in that the judgment section preliminarily stores the reference value of the Q value and the range of the resonance frequency of the vibration response signal in the normal case, and the resonance frequency of the vibration response signal detected by the vibration response detection section is Range or larger than the reference value of the Q value.

Another embodiment of the present invention provides a method for determining a crust. The method comprising: vibrating the egg in contact with the egg by a vibration driver; Detecting from the egg a vibration response signal corresponding to the applied vibration by applying the vibration by the vibration response detecting section; Moving the vibration driver and the vibration response detector or the egg relative to each other; And judging whether or not the egg is wave based on at least one of the resonance frequency and the Q value of the vibration response signal detected in the detecting step by the judging unit.

According to the first embodiment, since the contact detector is used without hitting the egg with the striking rod, the result of the determination of the wave is not influenced by the ambient noise, and is affected by the vibration response on the surface of the egg It is possible to reduce a judgment error due to ambient noise. Accordingly, when a large amount of eggs are judged, it becomes possible to measure a large number of eggs at the same time without interfering with measurement situations in other eggs. This can overcome the problem that a sound wave signal is transmitted not only to the microphone but also to the surrounding microphones due to the noise generated in the hitting by the conventional striking method, It is possible to simultaneously determine whether or not a plurality of eggs have a wave, so that it is very much more effective than the conventional hitting method.

In addition, the judging result is not influenced by the egg size because it is judged whether or not the egg is in contact with the egg.

According to the second or third embodiment, the vibration driving unit and the vibration response detecting unit are implemented as an integral module, and the integral module converts the electric signal into vibration to apply vibration to the egg, And has the additional effect of being able to determine the wave field with a simple configuration and at low cost since it is configured to detect a corresponding vibration response signal from the egg.

According to the fourth embodiment, it is possible to easily determine the wave column by a predetermined criterion.

Figure 1 shows a conventional striking wave crash detection system.
Figure 2 shows a schematic diagram of an apparatus for determining the crest of the present invention.
Figure 3 shows a schematic diagram modeling the vibrations in the integrated actuator / sensor or egg of the present invention.
4 shows an embodiment of the present invention for illustrating a configuration example for making constant the contact force between the egg and the integrated actuator / sensor.
FIG. 5 shows a system in which a plurality of determination apparatuses according to the present invention are installed in one system to simultaneously determine whether or not a plurality of eggs are wave-shaped.
FIG. 6 shows the frequency characteristics of a turbulent field and a wave field obtained through the contact type detector according to the present invention.
FIG. 7 shows the overall structure of a wave detection system according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Referring to Fig. 2, there is shown a schematic diagram of an apparatus for determining the crest of the present invention. In one embodiment of the present invention, the vibration response detecting section for detecting the vibration response signal corresponding to the vibration applied by the vibration driving section and the vibration driving section for applying vibration to the egg may be composed of an integral module. Such an integral module is shown in FIG. 2 as an integral driver / sensor 203.

The present invention is configured to contact a measurement probe 204 attached to the underside of the integrated actuator / sensor 203 with a constant force to the surface of the egg 20 as in FIG. Although the present embodiment has been described as applying vibration to the surface of the egg 20 through the measurement probe 240, the present invention is not limited to this, and the integrated actuator / sensor 200 may be in direct contact with the surface of the egg 20, .

The signal generator 210 sequentially generates a plurality of frequency components by one component to apply the driver signal 211 to the integrated driver / sensor 203, or simultaneously generates a composite signal of a plurality of frequency signals, 211 can be applied to the integrated actuator / sensor 200. This excitation signal 211 produces an egg surface exciter 23 in the egg 20 via the probe 240. After applying vibration to the eggs, the egg surface responses 24 corresponding to the vibrations are passed through the probe 240 and the integrated driver / sensor 200 in turn. The spectroscope determination unit 220 observes the change of the voltage corresponding to the vibration response signal to determine whether the egg is wave or not. Those skilled in the art will appreciate that an analog-to-digital converter (ADC) that converts the egg surface response measurement signal 221 into a digital signal and a frequency response analyzer configured to analyze frequency characteristics, It will be appreciated that a digital signal processor (DSP) may be included in the panning decision section 220 or disposed between the integral driver / sensor 200 and the panning decision section 220.

When the egg is vibrated, the egg surface response (24) represents the unique frequency of the egg itself, that is, the maximum vibration at the resonance frequency. If the egg is a normal egg, a high value oscillatory characteristic at a narrow band frequency appears in the egg surface response 24, but if it is a wave range, an overall low frequency characteristic at the broad band frequency appears in the egg surface response 24 . Particularly, in the case where the detection position is a wave-like region, there is a case in which a high-value vibration characteristic does not appear in the egg surface response 24, so that it is possible to easily distinguish between a normal field and a wave field.

Although not shown in FIG. 2, the present wave identification system of the present invention may further comprise a feeder for moving the integral actuator / sensor 200 or the egg 20 relative to each other after the measurement of the egg 20 is completed have.

Referring now to FIG. 3, there is shown a schematic diagram modeling vibration in an integrated actuator / sensor or egg of the present invention. The vibration characteristics described with reference to Fig. 2 will be described in more detail with reference to Fig. Vibration by the integrated actuator / sensor 300 can be modeled as a mass-spring-damper structure, which is represented by reference numerals 310 and 320 in FIG. The equivalent vibration at the surface of the egg 30 is represented by reference numeral 33. [ Sensor 300, probe 340 and the surface of egg 30 are all vibrated when vibrations are applied in the detector with integrated actuator / sensor 300. In the case of eggs, And have different vibration characteristics when they are normal.

   The integrated actuator / sensor of the present invention is configured to convert an electrical signal into vibration to apply vibration to the egg while detecting a vibration response signal corresponding to the vibration from the egg. That is, a structure in which a vibration displacement of a driver is generated by an electric signal and conversely, an electric signal and a vibration signal can be mutually converted so that a change of an electric signal may be generated in accordance with a vibration displacement of the actuator.

One example of an integrated actuator / sensor for achieving this is a magnetic body such as a permanent magnet and a coil through which an electric current flows. The electromagnetic force generated when a current flows through the coil can be used to generate vibration in the contact probe. The vibrations of these probes cause the eggs to vibrate. In addition, if the contact probe is vibrated by the vibration generated in the egg, an electric signal is generated by the electromagnetic force, so that it is possible to receive the vibration signal of the egg. Another example of an integrated actuator / sensor is a piezoelectric element. There is a method of converting an electric signal into vibration of a piezoelectric element to apply vibration to the egg and converting the vibration of the egg into an electric signal by using the piezoelectric effect to measure the vibration signal of the egg.

However, the integral type driver / sensor of the present invention is not limited to the above example, but it can discriminate the wave angle of the egg using the principle of converting an electrical signal into a vibration signal to apply vibration to the egg, It will be understood by those skilled in the art that the present invention may include any means capable of doing so.

Referring now to FIG. 4, there is shown a cross-sectional view of an integral actuator / sensor 400 with a contact control spring 460 and a spring lock arm 450 mounted on the upper surface of the integral actuator / sensor 400, One embodiment of the invention is shown.

As shown, when the contact control spring 460 is mounted on the upper surface of the integral actuator / sensor 401, the contact force between the egg and the integrated actuator / sensor 400 or probe 440 can be made constant. Other ways of keeping the contacting force constant include using the spring retaining arm 450 or using the self weight of the integral actuator / sensor 400 in addition to the method of using the spring 460. Two or more of the above methods may be used in combination.

However, it will be understood by those skilled in the art that the means for keeping the contact force constant is not limited to the above example, but may include any means capable of making the contact force between the egg and the integral actuator / sensor constant.

In order to contact the integrated driver / sensor 400 with the egg 40, the egg may be fixed and the integral driver / sensor 40 may be transported until it has a constant contact force in the egg direction, And the egg 40 is transported in the direction of the integral type actuator / sensor 400 to have a constant contact force.

As described above, in the present invention, since the contact type detector is used without hitting the eggs using the striking rods, it is judged whether or not the result of the determination of the waves is influenced by the vibration response on the surface of the egg without being affected by the ambient noise It is possible to reduce the determination error due to the ambient noise. Accordingly, when a large amount of eggs are judged, it becomes possible to measure a large number of eggs at the same time without interfering with measurement situations in other eggs. This can overcome the problem that a sound wave signal is transmitted not only to the microphone but also to the surrounding microphones due to the noise generated in the hitting by the conventional striking method, It is possible to simultaneously determine whether or not a plurality of eggs have a wave, so that it is very much more effective than the conventional hitting method. Further, since the driver and the sensor are constituted by an integrated module, it is possible to convert the electric signal into vibration to apply vibration to the egg, and to detect the vibration response signal corresponding to the vibration from the egg. Thus, it has the additional effect of being able to determine the wave field in a simple configuration and at low cost.

FIG. 5 shows a system capable of simultaneously determining whether a plurality of eggs are wave or not by installing a plurality of determination devices in one system so as to maximize the above-mentioned effect.

As shown, a plurality of integrated type actuators / sensors 500-1 to 500-n and a plurality of egg conveyance devices 510-1 to 510-m are provided so as to judge whether the eggs are wave-wise or not. As used herein, the terms " transfer device " and " transfer part " are used interchangeably. The egg feeders 510-1 to 510-m feed eggs from one driver / sensor to the next driver / sensor while rotating the eggs. In view of one conveying device, after the first integral type driver / sensor 500-1 is firstly determined whether or not the wave is angled, if the conveying device rotates the egg, the egg rotates and the second integral type driver / 500-2), and whether or not the wave is secondarily determined. By performing a plurality of such rotations and judgments, it is possible to judge whether or not the egg has a wave at various positions. Unlike this approach, it is also possible to fix the egg and move the integral actuator / sensor relative to the egg and determine whether it is a crust.

If m conveying devices are provided in the transverse direction, it is possible to simultaneously determine whether or not the plurality of eggs are wave-guided. When n * m integrated actuator / sensor is installed, it is possible to judge whether or not m eggs are wave at a time. Since the patented system uses a contact type detector, it does not interfere with a signal for measuring an adjacent egg, unlike the impact type determination method in which noises are generated during a hitting operation. Therefore, it is possible to construct a high-speed determination system by performing simultaneous measurement.

In the case of a single egg, it is easy to determine whether the eggs measured through the correlation between the maximum resonance frequencies and the Q values are in a normal state or a wave state, if all the frequency analysis signals at the set positions are obtained. Of course, if it is assumed that eggs on one farm are of similar quality to a certain size, it is also possible to discriminate them by including the correlation of the maximum resonance frequency and Q values of the other eggs for a more reliable determination of one egg.

FIG. 6 shows the frequency characteristics of the turbulence field and the wave field obtained through the contact detector. When the detection position of the egg changes while rotating, the turbidity peak shows a high Q value. Even if the center frequency varies slightly depending on the rotation position, In the case of the wave field, it shows a low Q value even with one frequency response, and the change width of the center frequency is somewhat larger than that of the normal case. Therefore, the correlation of the frequency response at each position shows that the correlation index is very high in the case of the steady state, and the correlation index is low in the case of the wave field.

This frequency characteristic can be used for the determination of the wave crest as follows. A reference value of the Q value and a range of the resonance frequency of the vibration response signal of the normal field are preliminarily stored and the vibration response signals obtained at the one or more egg surface measurement positions are analyzed so that these resonance frequencies are within the range of the resonance frequency, Are judged to be normal eggs if they are larger than the reference value.

For reference, the Q value is a quality factor, and is a factor indicating the degree of attenuation in the vibration signal. A large value of Q means narrower frequency bandwidth and less attenuation. A smaller value of Q means broader frequency bandwidth and greater attenuation. In case of egg wave, it is possible to determine the wave angle because the attenuation and nonuniformity of vibration characteristics are shown by the wave angle part.

A method for determining a wave of the present invention comprises vibrating an egg in contact with the egg by a vibrating driver (or integral driver / sensor); Detecting from the egg a vibration response signal corresponding to the applied vibration by applying the vibration by a vibration response detection unit (or an integral type driver / sensor); Moving the vibration driver and the vibration response detector (or integral driver / sensor) or the egg relative to each other; And a step of judging whether or not the egg is wave-guided based on at least one of the resonance frequency and the Q-factor (Quality factor) of the vibration response signal detected in the detecting step by the corrugation detection determination section.

Figure 7 shows the overall structure of a wave detection system. The egg position sensing unit 701 senses the position of the egg, the measurement number control unit 702 counts the number of measurements, and the track sensing unit 703 is configured to sense the track on which the egg rotates. When the eggs to be inspected reach the inspection position, the one or more integrated type actuators / sensors 700-1 to 700-N are moved to touch the surface of the eggs. The signal generator 710 is configured to generate an excitation signal to apply vibration to the egg through the integrated actuator / sensor 700. A signal obtained from the oscillating response of the egg at multiple locations through the integrated driver / sensor 700 is amplified through an N-channel preamplifier 706. The N-channel AD converter 707 is configured to convert the amplified analog signal into a digital signal. The N-channel signal processing unit 708 is configured to appropriately process the converted digital signal before analyzing the frequency. For example, the signal processing may be filtering to remove noise from the digital signal. The quadrature decision unit 709 may be composed of a maximum resonance frequency and Q value calculation unit 709-1, a maximum resonance frequency and Q value per egg correlation calculation unit 709-2 and a result signal output unit 709-3 have. Although not shown in detail in FIG. 7, the contact type detector and the egg conveying device can be extended to a two-dimensional array as well as a one-dimensional array, and a certain module is formed according to the calculation capability of the determination section, It is possible.

While the foregoing is directed to the features and advantages of various embodiments of the invention, together with a detailed description of the structure and function of various embodiments of the invention, it is to be understood that such detail is solely for the purpose of illustration, Changes may be made to the maximum extent indicated by the broadened general meaning and the scope of the invention is determined by the claims.

Claims (8)

An apparatus for determining a diffracted ray,
A vibration driver for applying vibration to the egg in contact with the egg;
A vibration response detector for detecting a vibration response signal corresponding to the vibration applied by the vibration driver from the egg;
A judging section for judging whether or not the egg has a wave based on at least one of a resonance frequency and a Q factor (Quality factor) of the vibration response signal detected by the vibration response detecting section; And
A vibratory driving section and a vibration response detecting section or a conveying section for moving the eggs relative to each other
Gt; a < / RTI > The method according to claim 1,
Wherein the vibration driver and the vibration response detector are implemented as an integral module,
Wherein the integral module is configured to convert an electrical signal to vibration to apply vibration to the egg while detecting a vibration response signal corresponding to the vibration from the egg,
Apparatus for determining a wave field. 3. The method according to claim 1 or 2,
The vibration driving unit and the vibration response detecting unit are both provided,
A magnetic body and a coil for applying an oscillation to the egg using an electromagnetic force generated when a current flows through the coil and a vibration response in the egg corresponding to the oscillation is configured to generate an electric signal by an electromagnetic force ; or
A piezoelectric element configured to convert an electric signal into a vibration of the piezoelectric element to apply vibration to the egg and to cause the vibration response in the egg corresponding to the vibration to generate an electric signal by a piezoelectric effect,
Apparatus for determining a wave field. 3. The method according to claim 1 or 2,
Wherein the judging section previously stores a range of the resonance frequency of the vibration response signal of the normal field and a reference value of the Q value and analyzes the vibration response signals obtained at the one or more egg surface measurement positions in the vibration response detection section, Frequency or a Q-value is greater than the reference value,
Apparatus for determining a wave field. CLAIMS 1. A method for determining a wave field,
Applying vibration to the egg in a state of being in contact with the egg by the vibration driving unit;
Detecting, from the egg, a vibration response signal corresponding to the applied vibration by the vibration response detecting section by applying the vibration;
Moving the vibration driver and the vibration response detector or the egg relative to each other;
Judging whether or not the egg is wave based on at least one of the resonance frequency and the Q factor (Quality factor) of the vibration response signal detected in the detecting step by the judging unit
/ RTI > wherein the method comprises the steps of: 6. The method of claim 5,
Wherein the vibration driver and the vibration response detector are implemented as an integral module,
Wherein the integral module is configured to convert an electrical signal to vibration to apply vibration to the egg while detecting a vibration response signal corresponding to the vibration from the egg,
A method for determining a wave field. The method according to claim 5 or 6,
The vibration driving unit and the vibration response detecting unit are both provided,
A magnetic body and a coil for applying an oscillation to the egg using an electromagnetic force generated when a current flows through the coil and a vibration response in the egg corresponding to the oscillation is configured to generate an electric signal by an electromagnetic force ; or
A piezoelectric element configured to convert an electric signal into a vibration of the piezoelectric element to apply vibration to the egg and to cause the vibration response in the egg corresponding to the vibration to generate an electric signal by a piezoelectric effect,
A method for determining a wave field. 3. The method according to claim 1 or 2,
Wherein said determining step includes the step of previously storing a range of the resonance frequency of the vibration response signal of the normal column and a reference value of the Q value and analyzing the vibration response signals obtained at the one or more egg surface measurement positions in the vibration response detection step, Determining whether the Q values are within a range of the resonance frequency or the Q values are larger than the reference value,
Apparatus for determining a wave field.

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