KR20210150020A - Landing net with measurement function of vibration weight and weight measuring method using thereof - Google Patents

Abstract

The present invention provides a landing net with a weight measurement function to measure the weight of vibrating live fish when picking up and transporting the live fish or fish caught in fishing. The landing net with a weight measurement function comprises: a net unit comprising a frame and a net; a handle unit comprising a handle connected to the frame; and a weight measuring unit mounted on the handle unit and measuring the weight of the live fish stored in the net unit.

Description

LANDING NET WITH MEASUREMENT FUNCTION OF VIBRATION WEIGHT AND WEIGHT MEASURING METHOD USING THEREOF

The present invention relates to a yard, and more particularly, a yard and weight having a vibrating weight measurement function configured to measure the weight of a vibrating live fish when picking up and transporting live fish such as live fish or caught fish. It is about how to measure.

In general, sashimi stores or fish markets store and sell fish in a live fish state using a water tank in order to maintain the freshness of the fish. In this case, in order to sell live fish, fish having a weight set at a market price or a fixed price must be picked up and sold. In addition, in the case of an auction, since the auction price is determined according to the freshness and the weight of the live fish, it is important to accurately measure the weight. For this purpose, in the conventional case, it is common to pick up live fish from a tank using a yardstick, measure the weight using a separately provided scale, check the weight of the live fish, and then sell it. That is, in the case of the prior art, in order to sell live fish, it is necessary to measure the weight using a separately provided scale after picking up the live fish from the water tank using a net, so a separate scale is used every time for the sale of live fish. A cumbersome task of measuring the weight has been accompanied.

In addition, in the case of fishing as a leisure, the exact weight and size of the fish also had to be measured separately.

In order to solve the inconvenience of measuring the weight of live fish such as live fish or fish caught in fishing of the prior art, Korean Patent No. 10-0416727 and Korean Patent No. 10-0478411 No. 10-0478411 disclose a load cell inside the yard. A yardstick was provided so that the weight of the meat could be measured by attaching it.

However, in the case of the conventional yard, when the direction of the load cell is inclined, the weight of the measured live fish is vectorically decomposed by the inclination with respect to the direction of gravity, and the load cell detects only the load component perpendicular to the load cell element. In the tilted state, there is a problem in that the weight of the measurement object cannot be accurately measured despite the precision of the load cell.

In addition, in the case of the prior art tteolchae, there is a problem that cannot accurately measure the load of a vibrating fish, such as a live fish in a tank or a live fish caught in fishing.

Republic of Korea Patent Registration No. 10-0416727 Republic of Korea Patent Registration No. 10-0478411

Accordingly, an embodiment of the present invention for solving the problems of the prior art described above is to selectively or simultaneously measure the weight and size of a vibrating live fish when picking up and transporting a live fish such as a live fish or a fish caught in fishing It is a task to be solved to provide a yard and weight measurement method having a vibration weight measurement function configured to be able to do so.

An embodiment of the present invention for achieving the above-described problem of the present invention, a mesh portion including a frame and a mesh; a handle portion including a handle connected to the frame; and a weight measuring unit that is mounted on the handle and measures the weight of live fish stored in the net.

The weight measuring unit includes a load cell unit, a gyro sensor unit, and an acceleration sensor unit, and measures the weight, vibration direction-angular velocity, acceleration or gravity direction information according to time of the live fish accommodated in the net, and then the measured weight of the live fish A weight calculation unit that calculates and outputs the weight of the live fish by correcting for a weight vibration waveform representing a change in weight over time, detecting a vibration-free region in the generated weight vibration waveform, and outputting the weight. have.

The yard with the weight measurement function may further include a size measuring unit that measures the size of the live fish by comparing it with the scale image after taking an image of the net live fish including the net and the live fish accommodated in the net. have.

Another embodiment of the present invention for achieving the above-described problem of the present invention is a mesh portion including a frame and a mesh; a handle portion including a handle connected to the frame; and a weight measuring unit mounted on the coupling part of the frame and the handle to detect the weight of the live fish accommodated in the mesh. Weight measurement basic information output that the load cell part, gyro sensor part, and acceleration sensor part of the measuring part measure the weight, vibration direction-angular velocity, acceleration or gravity direction information according to time of live fish housed in the net and generate and output it as basic weighing information step; and after correcting the weight of the live fish measured from the basic information on the weight measurement of the live fish measured by the weight measurement unit, a weight vibration waveform representing the change in weight over time due to fluctuations of the live fish is generated. It provides a method for measuring the weight of live fish using a yard, characterized in that it comprises; a weighing step of calculating and outputting the weight.

The weighing step is a step of measuring the weight of the live fish using a vibration-free region of the weight vibration waveform.

The method of measuring the weight of the live fish further comprises a size output step of photographing an image of a net live fish including a net and a live fish, synthesizing the image with a scale image, and comparing the image of the live fish with the scale image to output the size of the live fish. can be

The present invention having the above-described configuration provides an effect of selectively or simultaneously measuring and displaying the weight and size of a vibrating live fish when picking up and transporting a live fish, such as a live fish or a fish caught in fishing.

Accordingly, the present invention can increase the reliability of the distribution or sale of live fish by enabling consumers to easily identify the weight and size of live fish when selling live fish, thereby providing an effect of promoting the sale of live fish.

1 is a plan view (a) and a side view (b) of a yard with a weight measurement function of an embodiment of the present invention.
2 is a functional block diagram of the weight measuring unit 300 and the size measuring unit 400 according to an embodiment of the present invention.
3 is a functional block diagram for weight extraction of the weight calculation unit 320;
4 is a view showing a weight measurement error according to the inclination of the load cell.
Figure 5 is a view showing a processing process of a live fish weight measurement method using a tteolchae of another embodiment of the present invention.
6 is a graph showing a weight vibration waveform formed by corrected weights obtained by correcting the weight of the live fish 10 detected by the load cell unit 311 as a weight value in the direction of gravity.
7 is a flowchart showing the processing of the size measurement step (S250) of the live fish in the net by the size extraction unit 420 during the processing of FIG.
8 and 9 are diagrams illustrating an embodiment of a net live fish image 20 in which the size measuring unit 400 captures a trout from which live fish are retrieved.

In the following description of the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

Since the embodiment according to the concept of the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiment according to the concept of the present invention to a specific disclosed form, and it should be understood that the present invention includes all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. Other expressions describing the relationship between elements, such as "between" and "immediately between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that the described feature, number, step, operation, component, part, or a combination thereof exists, and includes one or more other features or numbers. , it is to be understood that it does not preclude the possibility of the existence or addition of steps, operations, components, parts, or combinations thereof.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments of the present invention.

1 is a plan view (a) and a side view (b) of a yard (1) having a weight measurement function according to an embodiment of the present invention, and FIG. 2 is a weight measurement unit 300 and a size measurement unit according to an embodiment of the present invention. It is a functional block diagram of 400 .

As shown in Figures 1 and 2, the yard (1) is a circular ring-shaped frame 110 and a mesh portion 100 including a mesh 120 supported by being coupled to the frame, which is connected to the frame 110 A handle unit 200 including a handle 210 and a weight measuring unit 300 mounted on the coupling portion of the frame 110 and the handle 210 to detect the weight of the live fish 10 accommodated in the mesh portion. may be included. In addition, after generating the net live fish image 20 provided in the handle 200 and captured in the net 120 and the live fish 10 vibrating in the net 120, the live fish 10 ) may be configured to further include a size measuring unit 400 for measuring the size.

The yard (1) is configured to include a weight measurement sensor unit 310, a weight calculation unit 320, and a display unit 500 for measuring the weight of the live fish 10 to be transferred. In addition, it may be configured to further include a communication unit 600 for transmitting the measured weight or size information and the photographed net live fish image information to the outside.

The weight measurement unit 300 is configured to include a weight measurement sensor unit 310 and a weight calculation unit 320 to measure the weight of the live fish 10 accommodated in the mesh unit 100 .

The weight measurement sensor unit 310 generates and outputs the weight, vibration direction-angular velocity, acceleration and gravity direction information of live fish stored in the net measured over time as basic weight measurement information, and a load cell unit 311, It is configured to include a gyro sensor unit 313 and an acceleration sensor unit 315 .

The load cell unit 311 is configured to include a load cell that generates an electrical signal according to an applied load. The load cell is a sensor capable of detecting forces such as mass and torque by generating and outputting an electric signal corresponding to the magnitude of the applied external force when an external force is applied. To this end, the load cell is configured to include a strain gauge whose resistance value is changed by shape deformation.

In an embodiment of the present invention, the load cell 312 is configured to be pressed by the rotational movement of the connection part 111 of the frame 110 connected to the handle part 200, and the rotation torque of the connection part 111 is applied. Although illustrated as being configured to receive, various structures capable of receiving the load of the mesh 100 may be applied.

The gyro sensor unit 313 is configured to detect a change in the rotation direction, rotation direction and angular velocity within a set coordinate axis when the mesh unit 100 vibrates in space due to the fluctuation of the live fish 10 . When the gyro sensor unit 313 is a three-axis gyro sensor having X, Y, and Z axes, the angular velocity is 0 in a stationary state, and when vibrating, the angular velocity according to the rotation of each of the X, Y, and Z axes is detected. .

And the acceleration sensor unit 315 is configured to detect the acceleration, gravity acceleration, and direction of gravity applied to the net protection part 100 when the mesh part 100 vibrates in space due to the fluctuation of the live fish 10 . In the case of a 3-axis acceleration having X, Y, and Z axes and the Z axis being the axis in the direction of gravity, the value of the gravitational acceleration -g is always output on the Z axis when no external force is applied. However, when the acceleration sensor unit 315 is inclined, the value of the gravitational acceleration -g appears dispersed along the X, Y, and Z axes according to the degree of inclination of the acceleration sensor unit 315 . Accordingly, when the acceleration sensor unit 315 is inclined, it is possible to detect the inclination with respect to the direction of gravity by the distribution of gravity or load generated on each of the three axes.

The weight calculation unit 320 calculates the corrected weight vibration, direction-angular velocity vibration, acceleration vibration and gravity of the live fish 10 from the basic weight measurement information of the live fish 10 measured by the weight measurement sensor unit 310 . After calculating the vibration information including the direction, it is configured to calculate and output the weight of the live fish.

3 is a functional block diagram for weight extraction of the weight calculation unit 320, and FIG. 4 is a view showing a weight measurement error according to the inclination of the load cell. Referring to FIGS. 3 and 4, the weight calculation unit 320 will be described in more detail.

The weight calculation unit 320 uses the measurement value by the gyro sensor and the acceleration sensor for the weight measurement information of the load cell, measures the measurement error of the load cell caused by inclination, etc., and corrects the weight error, ) may be configured to output a change in weight vibration.

To this end, as shown in FIG. 3 , the weight calculation unit 320 calculates the weight vibration in the gravitational direction of the live fish according to time after receiving the basic weight measurement information, and generates and outputs a weight vibration waveform. A waveform generation unit 321, a vibration-free region extraction unit 323 for extracting a vibration-free region within a preset amplitude range between the maximum and minimum values of the weight vibration from the weight vibration waveform generated by the weight vibration waveform generation unit 321, and It may be configured to include a weight output unit 325 for extracting and outputting the weight of live fish from the amplitude values of the vibration-free region 317 .

The weight vibration waveform generating unit 321 corrects the load measured by the load cell unit 311 using the angular velocity and acceleration measured by the gyro sensor unit 313 and the acceleration sensor unit 315, and then the load cell unit 311 ), including the weight of the live fish 10, to which an external force is added by the fluctuation of the live fish 10 is converted into weight values in the direction of gravity to generate a weight vibration wave. That is, the weight vibration waveform is composed of vibration amplitude values of the weight values of the live fish 10, that is, vibration energy values, in the direction of gravity including an external force caused by fluctuations with time.

An example of correction of the measurement value of the load cell will be described with reference to FIG. 4 .

In the case of the load cell of the load cell unit 311, a load acting perpendicular to the load cell is measured. Accordingly, as shown in (a) of FIG. 4 , in a state in which the load cell is vertically disposed with a vertical load (eg, a load due to gravity), an accurate vertical load can be detected. However, as shown in (b) of FIG. 4 , when the load cell is tilted, the vertical load is distributed into the inclination direction load of the load cell and the load measured by the load cell, and thus there is a problem in that the load cell cannot be accurately measured. Accordingly, by using the acceleration sensor unit 315 and the gyro sensor unit 313 to detect the inclination and the inclination direction of the mesh unit 100, the measured load measured by the load cell is the actual shown in (b) of FIG. Correct load can be measured by correcting the load.

First, the accelerations of the X, Y, and Z axes are defined as Ax, Ay, and Az, and the angular velocities are defined as Wx, Wy, and Wz.

Compensation by fusion of the data of the gyro sensor unit 313 and the acceleration sensor unit 315 for the rotation angle of the load cell in space using real-time angular velocity and acceleration data measured by the gyro sensor unit 313 and the acceleration sensor unit 315 It can be compensated by applying the filter method.

)와 Y축 주위로 회전한 각도 (ρ)를 계산할 수 있다. 도 4의 (c)는 로드셀부(311)의 회전에 의한 ρ,

및 θ 값을 나타낸다.Converting the acceleration data value measured by the acceleration sensor unit 315 into a rotation angle value of the acceleration sensor unit 315 may be performed using an acceleration vector component ratio. That is, the angle of rotation is decomposed into three axes, consisting of the angle roll rotated around the X axis, the pitch angle rotated around the Y axis, and the angle yaw rotated around the Z axis. With this measured acceleration data, the angle rotated around the X axis (

) and the angle (ρ) rotated around the Y axis can be calculated. 4 (c) is ρ by the rotation of the load cell unit 311,

and θ values.

If the rotation angle is expressed with a pure acceleration value, it is expressed as [Equation 1] below.

[Equation 1]

값은 각각 피치와 롤을 나타내고, θ는 Z축의 중력축에 대한 틸트 값을 나타내므로 요는 아니다. 그러므로 요는 가속도계로부터 계산할 수 없다.[Equation 1] shows a method of calculating a rotation angle or a tilt angle with an acceleration value. where ρ and

The values represent pitch and roll, respectively, and θ represents the tilt value of the Z axis with respect to the gravity axis, so it is not necessary. Therefore, the yaw cannot be calculated from the accelerometer.

However, if gravity is the only force applied to the sensor, the measurement result of the accelerometer indicates the correct orientation. However, in the case of a sensor that moves in translation and rotation, a force must be applied to the sensor, which causes fluctuation of the measured value. Acceleration value data is simple, but it tends to burn a lot of noise with severe fluctuations. If these values can be calculated by averaging them, the accelerometer will show the acceleration values for a longer time than the time of the fluctuation, so it provides an accurate measurement value.

The method of calculating the orientation angle from the gyro sensor is different because the gyro sensor measures angular velocity (ω, change of orientation angle per unit time) rather than orientation angle itself. To calculate the orientation angle, the position of the sensor must be initialized to a known orientation (possible from the accelerometer), and then the angular velocity (ω) rotating around the X, Y, and Z axes for some time (Δt) is calculated. have to measure Then ω ×Δt = angular change is calculated. The calculated direction angle is a value obtained by adding the angle change amount to the original angle. Therefore, if the measured angle position is stored, a new angle value can be obtained by simply adding a new value during each time.

Accordingly, by applying a Kalman filter or a complementary filter method, the gyroscope data of the gyro sensor unit 313 and the accelerometer data of the acceleration sensor unit 315 are mixed in the acceleration sensor unit 315 The correction angle may be detected by correcting an error between the detected acceleration and the direction angle detected by the gyro sensor unit 313 .

[Equation 2]

Compensation angle = α*(gyroscope angle)+(1-α)*(accelerometer angle)

Here, α=τ/(τ+Δt), gyroscope angle = (recently measured compensation angle) + ω ×Δt, Δt is the sampling rate, τ is generally longer than the time required for acceleration noise time constant that means . (e.g., for a sampling rate of 0.04 seconds, a time constant of 1, α is approximately 0.96)

As described above, after the compensation angle is detected, the compensation angle is applied to the weight values for each of the weight vibrations measured by the load cell unit 311, and the weight in the direction of gravity is detected by the load cell unit 311. It is possible to correct the weight values.

That is, the above-described load cell detects the load applied by the mesh unit 100 , and the gyro sensor unit 313 and the acceleration sensor unit 315 are inclined and inclined in the reference coordinate system of the mesh unit 100 . to be able to detect Accordingly, by applying the load cell, the gyro sensor and the acceleration sensor, the load cell (not shown) of the load cell unit 311 at each position according to the time of the mesh unit 100 in which the live fish 10 is accommodated and vibrated. ), the inclination of the load cell and the inclination direction can be detected. Therefore, it is possible to correct the load detected by the load cell unit 311 into the 'actual load (weight)' in the gravitational direction (Fig. 4(b)). It is possible to accurately measure the load applied to the load cell by the vibration over time, so that it is possible to accurately calculate the weight of the live fish 10 .

As described above, after the weight error of live fish measured by the load cell unit 311 is corrected, the weight vibration waveform generating unit 321 generates and outputs a weight vibration waveform composed of the weight values of live fish according to time. do.

The weight measurement signals of the load cell unit 311 for which the error has been corrected include vibration errors other than the vibration of live fish. Therefore, the weight vibration waveform generator 321 uses an active vibration frequency pass filter (low-pass filter) that passes only waveforms within the vibration frequency range of live fish extracted based on the accumulated vibration measurement data of live fish. By removing the vibration signals acting as noise other than the vibration by At this time, the pass band of the low-pass filter, which is the active movement frequency pass filter, may be generated for each type of live fish from the weight vibration waveform measured and accumulated from live fish, and may also be updated according to the accumulation of data.

The vibration-free region extraction unit 323 is a vibration-free region in which the width between the maximum and minimum values of the weight vibration in the weight vibration waveform having the weight vibration in the gravity direction of the live fish from which the external noise vibration signal is removed is within a preset amplitude range ( 317). The amplitude range of the weight vibration waveform for selection of the vibration-free region 317 is ±10% or less, ±5% or less, ±10% or less of the reference amplitude of the maximum overshoot, maximum amplitude, and minimum amplitude (negative maximum amplitude value). 1% or less may be selected depending on the accuracy.

The weight calculation unit 320 may be configured such that the vibration-free region 317 calculates and outputs the weight of the live fish from the weight vibration waveform by applying arithmetic average, geometric average, etc., to the weight amplitude.

5 is a view showing a processing process of a live fish weight measurement method using a tteolchae according to another embodiment of the present invention.

As shown in FIG. 5 , the method for measuring the weight of live fish using a yard stick of another embodiment of the present invention includes a mesh 100 including a frame 110 and a mesh 120 , and a handle 210 connected to the frame 110 . A handle unit 200 including In the method for measuring the weight of live fish using a yardstick having a weight measuring function, characterized in that, the load cell unit 311, the gyro sensor unit 313 ) and the acceleration sensor unit 315 generates and outputs the weight, vibration direction-angular velocity, acceleration and gravity direction information of the live fish 10 accommodated in the net 120 measured over time as basic weight measurement information. In the basic information output step (S100) and the weight measurement unit 300, the corrected weight vibration, direction-angular velocity vibration, acceleration vibration of the live fish from the weight measurement basic information of the live fish measured by the weight measurement sensor unit 310 and a weight measurement step (S200) of calculating the weight of the live fish after calculating the vibration information including the direction of gravity.

In the weighing step (S200), after the weight vibration waveform generating unit 321 receives the weight measurement basic information, the weight vibration in the gravity direction of the live fish 10 according to time is calculated to generate a weight vibration waveform. A weight vibration waveform generating step (S210) to output, a vibration-free region extraction step (S230) of extracting a vibration-free region having a preset low amplitude range between the maximum value and the minimum value of the weight vibration from the weight vibration waveform (S230), the vibration-free region 317 ) may be configured to include a weight output step (S240) of extracting and outputting the weight of live fish from amplitude values of ) and a size measurement step (S250) of measuring the size of live fish using a net live fish image.

In the weight vibration waveform generation step (S210), first, the weight vibration waveform generation unit 321, as in the description of FIG. 3, is a live fish of the load cell unit 311 from the weight measurement sensor unit 310 over time. (10) (or the weight measurement value of the live fish 10 and the mesh portion 100), the rotation direction and angular velocity value of the gyro sensor unit 313, the acceleration change value and the gravity direction values of the acceleration sensor unit 315 After receiving, the weight of the live fish measured by the load cell unit 311 is corrected to the weight value of the live fish in the gravity direction to generate a weight vibration waveform consisting of the weight values of the live fish in the gravity direction detected over time. .

6 is a graph showing a weight vibration waveform formed by corrected weights obtained by correcting the weight of the live fish 10 detected by the load cell unit 311 as a weight value in the direction of gravity.

In the graph of FIG. 6, the area under the actual weight of the adjacent live fish with a weight of 0 kg and the area below (negative weight area) are the live fish 10 due to fluctuations in the live fish without contacting the mesh 100 and in the air. In the floating state, it is in a state that is repelled upward by the elastic force applied by the live fish 10 of the mesh portion 100 . And the area with a weight of 0 kg or more (the positive weight area) represents the weight including the impact energy and the weight of the live fish itself due to the fluctuation of the live fish. At this time, the maximum values of the vibration amplitude in the positive weight region are when the live fish swings with the greatest force during the swing cycle.

In the case where the live fish 10 of the net does not swing, there is a state in the vibration-free region 317 in which the amplitude of vibration is less than or equal to a certain value in the graph described above.

The vibration-free region extraction step (S230) may be a step in which the vibration-free region extraction unit 323 extracts non-vibration regions in which the difference between the maximum and minimum amplitude values is within a predetermined range from the weight vibration waveform. . At this time, since the weight value when the fluctuation of the live fish is minimized appears as the smallest value, the area where the average weight value of the extracted non-vibration area is the minimum is configured to be extracted as the non-vibration area and as the non-vibration area for extracting the actual weight of the live fish. do.

In the weight output step (S240), the weight output unit 325 calculates according to various averaging methods such as arithmetic average and geometric average of the minimum weight values of the extracted non-vibration region, and then outputs it as the weight of live fish. can In this case, if the weight of the mesh 100 is not previously reduced, the weight of the mesh 100 is reduced.

The present invention detects a voltage or current output from a load cell without a separate frequency filter and generates it as a weight vibration waveform, and a vibration-free region having a preset low amplitude region appearing in the generated weight vibration waveform It makes it possible to measure the weight of live fish easily and accurately by detecting

As a method of measuring the weight of live fish that fluctuates using a yardstick, the weight measurement signal of live fish detected from a load cell is converted to an analog digital signal, and then a low-frequency filter is applied to remove the high-frequency weight signal to measure the weight of live fish. can be considered. However, when the oscillation value output from the load cell converts the weight signal of live fish into the frequency domain, even at low frequencies, there are cases with high energy values, that is, high weight amplitudes. does not reflect Therefore, when frequency filtering is applied, it is impossible to accurately measure the weight of live fish.

However, in the present invention, in the waveform of the vibration energy itself (weight amplitude) according to the fluctuation of the live fish, the live fish is based on the vibration-free region 317 (the weight vibration region of the preset low value of the weight amplitude range) closest to the weight of the live fish. Since the weight of the live fish is measured, it becomes possible to accurately measure the weight of the live fish when transporting the live fish using the trellis (1).

Referring back to FIG. 2 , the size measuring unit 400 includes a camera unit 401 that captures and outputs an image of a net live fish including a net and a live fish accommodated in the net, and the net live fish received from the camera unit. An image synthesizing unit 410 for generating a scale synthesis image by synthesizing a scale image with an image, and a size output unit 420 for extracting a live fish image from the scale synthesis image and extracting the corresponding scale size as the size of the live fish and outputting it It may be composed of

The size measurement unit 400 of the above configuration performs the size measurement step (S250) during the processing of FIG. 5 to synthesize the scale image with the camera image, and then extracts the live fish image image and compares it with the scale image. to automatically measure the size of

7 is a flowchart showing the processing process of the size measurement step (S250) of the live fish in the net by the size extraction unit 420 during the processing process of FIG. 5, and FIGS. 8 and 9 are the size measurement unit 400 It is a diagram showing an embodiment of a net 120 and a net live fish image 20 including a live fish 10 in which live fish are captured.

7 , the live fish weight measurement method according to an embodiment of the present invention includes a live fish size measurement step (S250), a live fish image capturing step (S251), a scale synthesis image generation step (S253), and a size extraction step (S255). can be configured.

In the live fish image capturing step (S251), a net live fish image (20, see FIGS. 8 and 9), which is an image image including a net and live fish, is photographed through the camera unit 401 and output to the image synthesis unit 410 is a step 9 shows an image of live fish with a weight of 3.02 kg and a scale image 40 displayed through the LCD display device in the store.

In the scale synthesis image generation step (S253), after receiving the net live fish image 20 transmitted from the camera unit 401, it is manufactured to have the size of the frame 110 of the netting unit 100 in advance and is non-volatile. It is a step of generating a scale synthesis image 40 by synthesizing the scale image 30 stored in a storage device (not shown) such as a storage with the net live fish image 20 .

In the size extraction step (S255), the size output unit 420 extracts a live fish image by applying an image extraction algorithm such as edge detect from the scale composite image 40, and converts the extracted live fish image to a scale image It is a step of calculating and outputting the size of the live fish 10 in comparison with .

By the above-described processing process, the tteolchae (1) of the present invention allows the size of the live fish to be automatically measured while the live fish (10) is being transported.

Again, referring to FIG. 5 , in the method for measuring the weight of live fish using the nettle of the present invention described above, after the weight and size of the live fish 10 are measured, the measured weight information, the size information of the live fish, or the scale composite image Alternatively, the live fish information display step (S260) of outputting the live fish image information in which the scale image is synthesized through the communication unit 600 to a display device installed in a store, an auction house, etc. may be further included.

Through the above-described live fish information display step (S260), the consumer can check the weight, size, and image of live fish through a separate display device during the distribution of live fish in general restaurants or auction markets, so the reliability of the live fish distribution market will significantly improve In addition, by outputting only the scale composite image 40 to the display device in the live fish information display step S260 described above, consumers can intuitively grasp the approximate size of the live fish 10 through the scale image 30 . This further improves the reliability of the live fish distribution market. In the case of displaying the weight together, consumers can grasp the weight compared to the size, so it is possible to grasp the quality as well as the size and weight of the live fish.

It is obvious that the present invention is not limited to measuring the weight or size of live fish, but also includes measuring the weight or size of a vibrating object that is a transfer target using a yardstick.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

1: Tulchae
10: Live fish 20: Net live fish video
30: scale image 40: scale composite image
100: mesh 110: frame
111: connection part 120: mesh
200: handle 210: handle
300: weight measurement unit 310: weight measurement sensor unit
311: load cell unit 312: load cell
313: gyro sensor unit 315: acceleration sensor unit
320: weight calculation unit 321: weight vibration waveform generation unit
322: vibration-free region 323: vibration-free region extraction unit
325: weight output unit
400: size measurement unit 401: camera unit
410: image synthesis unit 420: size output unit
500: display unit 600: communication unit

Claims (6)

a mesh portion including a frame and a mesh;
a handle portion including a handle connected to the frame; and
A weight measuring unit that is mounted on the handle and measures the weight of the live fish stored in the net. According to claim 1, wherein the weight measuring unit,
A load cell unit, a gyro sensor unit and an acceleration sensor unit are provided to measure the weight, vibration direction-angular velocity, acceleration or gravity direction information of the live fish housed in the net over time, and then correct the measured weight of the live fish, time weight calculation unit for generating a weight vibration waveform indicating a change in weight according to A yard with functions. According to claim 1,
Deulchae with a weight measuring function, characterized in that it further comprises a size measuring unit for measuring the size of the live fish by comparing the image with the scale image after shooting the net live fish image including the net and the live fish housed in the net . a mesh portion including a frame and a mesh; a handle portion including a handle connected to the frame; And a weight measurement unit mounted on the coupling portion of the frame and the handle to detect the weight of the live fish stored in the net portion;
The load cell unit, the gyro sensor unit and the acceleration sensor unit of the weight measurement unit measure the weight, vibration direction-angular velocity, acceleration or gravity direction information according to the time of the live fish accommodated in the net, and generate and output the weight measurement basic information. information output step; and
After correcting the weight of the live fish measured from the basic information on weight measurement of the live fish measured by the weight measurement unit, a weight vibration waveform representing the change in weight over time due to fluctuation of the live fish is generated to generate the weight of the live fish A weight measurement step of calculating and outputting a weight measurement method of live fish using a dulchae, characterized in that it comprises a. 5. The method of claim 4, wherein the weighing step comprises:
A method of measuring the weight of live fish using a yard, characterized in that the step of measuring the weight of the live fish using a vibration-free region of the weight vibration waveform. 5. The method of claim 4,
Using a net, characterized in that it further comprises a size output step of photographing a net live fish image including a net and live fish, synthesizing it with a scale image, and outputting the size of the live fish by comparing the live fish image image with the scale image. How to measure the weight of live fish.

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