TW202133094A - Fishing rod evaluation method for performing an objective evaluation on the performance of a fishing rod corresponding to the actual usage state or the action of the fishing rod by using dynamic data of the fishing rod - Google Patents

Abstract

The object of the invention is to provide an objective evaluation method for the performance of a fishing rod corresponding to the actual usage state or the action of the fishing rod by using dynamic data of the fishing rod. To achieve the object, the fishing rod evaluation method according to the invention is provided to calculate the strain energy at the specific position from a rod tip to a rod end of the fishing rod when using the fishing rod, and perform evaluation on the fishing rod based upon a variation of the strain energy at each position.

Description

Fishing rod evaluation method

The present invention relates to a fishing rod evaluation method that objectively evaluates the performance of a fishing rod based on dynamic physical characteristics.

Fishing rods are required to have various characteristics. Among the characteristics that are emphasized in the design of fishing rods, there are characteristics that can be physically measured. Examples include bending stiffness and torsional rigidity of the rod body.

The above-mentioned bending rigidity and torsional rigidity are the physical characteristics of the fishing rod. Although they are quantitative characteristics, they do not reflect the actual movement of the fishing rod. In other words, they are static physical characteristics rather than dynamic physical characteristics. The problem of objectively evaluating the performance of fishing rods.

In the past, as a method of objectively evaluating the performance of fishing rods, for example, Japanese Patent Application Laid-Open No. 2013-153740 (Patent Document 1) discloses the use of numerically-quantized perceptual evaluation based on physical elements to design resins. Design system for tubular or plate-shaped elongated members made of fabricated materials.

However, the method related to Patent Document 1 is also a so-called static physical property, and may not accurately reflect the actual use state of the fishing rod and dynamic physical properties such as movement, so it is difficult to say that the performance of the fishing rod can be objectively evaluated.

[Patent Document 1] Japanese Patent Application Publication No. 2013-153740

One of the objects of the present invention is to provide an objective method for evaluating the performance of the fishing rod corresponding to the actual use state and movement of the fishing rod by measuring the dynamic physical characteristics of the fishing rod.

The other objects of the present invention will be clarified by referring to the entire specification.

The evaluation method according to one embodiment of the present invention is to calculate the strain energy (strain energy) at a predetermined position from the tip of the fishing rod to the tail when the fishing rod is used, and evaluate the fishing rod based on the change in the strain energy at the predetermined position. . Furthermore, the fishing rod evaluation method according to an embodiment of the present invention is based on the change in strain energy at the aforementioned predetermined position and the speed and acceleration of the fishing rod when the fishing rod is used.

In the fishing rod evaluation method according to an embodiment of the present invention, the calculation of the strain energy at the predetermined position is the extraction of time series data of the strain energy at the predetermined position.

The fishing rod evaluation method according to an embodiment of the present invention evaluates the performance of the fishing rod based on the change in the strain energy at the predetermined position and the state of use of the fishing rod.

The fishing rod evaluation method according to an embodiment of the present invention calculates the change in the strain energy of the load given to the angler holding the fishing rod, and evaluates the fishing rod using the load.

In the fishing rod evaluation method according to an embodiment of the present invention, the usage state of the fishing rod is a casting action of the fishing rod.

In the fishing rod evaluation method according to an embodiment of the present invention, the state of use of the fishing rod is the pulling-in motion of the fishing rod.

In the fishing rod evaluation method according to an embodiment of the present invention, the state of use of the fishing rod is the fishing-up action of the fishing rod.

In the fishing rod evaluation method according to an embodiment of the present invention, the change in the strain energy is the accumulation and release of the strain energy at the aforementioned predetermined position of the fishing rod.

The aforementioned predetermined position in the fishing rod evaluation method according to an embodiment of the present invention is to evaluate the fishing rod based on changes in strain energy at a part or plural positions of the fishing rod.

According to the embodiment of the present invention, by measuring the dynamic physical characteristics of the strain energy of the fishing rod, a more objective and accurate performance evaluation of the fishing rod corresponding to the actual use state and movement of the fishing rod is possible.

Hereinafter, various embodiments of the present invention will be described with reference to the drawings as appropriate. In addition, in each drawing, the same reference signs are attached to common elements. Please note that the drawings may not necessarily be recorded in the correct scale for ease of explanation.

FIG. 1 is a diagram schematically showing the overall configuration of a strain energy measurement system 1 used in the fishing rod evaluation method of the present invention (hereinafter also simply referred to as the evaluation method). As shown in FIG. 1, the measurement system 1 uses a fishing rod 10 that marks 11 places that are a predetermined position of the rod, a hammer 20 attached to one end of the fishing rod 10, and a camera that captures the mark 8 ( camera) 30 composition. When the operator performs a fishing operation while holding the fishing rod 10, the camera 30 captures the mark 8 and measures changes in the entire rod and each predetermined position of the mark.

In addition, the measurement system 1 may be further provided with a holding device that holds the fishing rod 20. In addition, the measurement system 1 may be configured in combination with another device other than the fishing rod 10, the hammer 20, and the camera 30.

In this way, the illustrated measurement system 1 detects the speed and acceleration of the fishing rod 10 when the fishing rod is used, and the coordinates of each predetermined position of the fishing rod. Then, the strain energy of the fishing rod 10 was calculated from the curvature and rigidity of the coordinates of each predetermined position of the fishing rod, and evaluated. More details are as follows.

The evaluation method according to an embodiment of the present invention will be described with reference to FIG. 2. In the evaluation method according to an embodiment of the present invention, first, in (S1), the curvature and rigidity based on the coordinates of each predetermined position of the fishing rod 10 are detected. Next, in (S2), the speed and acceleration of the fishing rod 10 when the fishing rod 10 is used are detected by the measurement system 1 described above. Here, (S2) may be prior to (S1), and (S1) and (S1) may be performed at the same time. In other words, in (S3), although the detection information in (S1) and (S2) is required, this does not mean that the sequence of detection itself has meaning, but the sequence can be changed as appropriate.

Next, in (S3), based on the above-mentioned information of the fishing rod 10 detected in (S1), the strain energy at each predetermined position from the tip to the tail of the fishing rod 10 and its change are calculated when the fishing rod 10 is used.

Then, the fishing rod is evaluated based on the change in strain energy at each predetermined position calculated in (S3). Here, in the evaluation of the fishing rod, in addition to the change in strain energy at each predetermined position, the speed and acceleration of the fishing rod 10 detected in (S2) can also be used at the same time.

With the evaluation method according to an embodiment of the present invention, the dynamic data of the strain energy of the fishing rod is used, so that a more objective and accurate performance evaluation of the fishing rod corresponding to the actual use state and movement of the fishing rod is possible.

In the evaluation method according to an embodiment of the present invention, the calculation of the strain energy at the predetermined position of the fishing rod is the extraction of the time-series data of the strain energy at the predetermined position. In this way, by using the time series data of the strain energy at the predetermined position of the fishing rod, it is possible to evaluate the performance of the fishing rod more objectively and accurately corresponding to the actual use state and movement of the fishing rod.

The evaluation method according to an embodiment of the present invention is to evaluate the performance of the fishing rod based on the change in strain energy at a predetermined position of the fishing rod and the state of use of the aforementioned fishing rod. This is a viewpoint that considers the performance evaluation of the fishing rod, which differs according to how the fishing rod is used. According to this, the performance evaluation of the fishing rod can be performed more accurately in accordance with the state of use of the fishing rod.

In the evaluation method according to an embodiment of the present invention, the state of use of the fishing rod is a casting action of the fishing rod.

In the evaluation method according to an embodiment of the present invention, the state of use of the fishing rod is the pulling-in motion of the fishing rod.

In the evaluation method according to an embodiment of the present invention, the state of use of the fishing rod is the fishing action of the fishing rod.

The evaluation method according to an embodiment of the present invention calculates the change in the strain energy of the load given to the angler holding the fishing rod, and evaluates the fishing rod using the load. According to this, it is possible to evaluate the performance of the fishing rod in consideration of the load given to the angler.

In the evaluation method according to an embodiment of the present invention, the change in strain energy is the accumulation and release of strain energy at a predetermined position of the fishing rod. Furthermore, the evaluation method according to an embodiment of the present invention is to evaluate the fishing rod based on the change in strain energy at a part of the position as a predetermined position of the fishing rod.

An example of an evaluation method according to an embodiment of the present invention will be specifically described with reference to FIGS. 3 to 8. First of all, Figures 3a and b show the time change of the strain energy at the specified position of the fishing rod when the use state of the two types of fishing rods (rods C and D) is a throwing action. Figure 3c shows the time changes of the two types of fishing rods. The usage pattern is the time change of the artificial lure speed in the case of the throwing action. In Figs. 3a and b, the horizontal axis represents time, and the vertical axis represents strain energy. Moreover, in FIG. 3c, the horizontal axis represents time, and the vertical axis represents artificial lure speed.

Moreover, FIG. 3d shows the time change of the total strain energy of the fishing rod when the usage state of the two types of fishing rods is a throwing action. In Figure 3d, the horizontal axis represents time, and the vertical axis represents total strain energy.

As shown in Figure 3a and b, although rods C and D accumulate strain energy on the entire rod after the start of the throwing action, as they move towards the end of the rod, more strain energy is accumulated in a time series show. According to this, in the case where the use state of the fishing rod is a throwing action, it can be confirmed at which time and in which section the strain energy is most accumulated.

In particular, it was found that the most strain energy was accumulated in the rod D at an earlier time, and that the strain energy was accumulated in the tail part of the fishing rod of the rod D more than the tail part of the fishing rod of the rod C and went away. Here, the section refers to each part of the pole in the case of appropriately dividing the pole head to the pole tail into 10 sections, from the pole head (section 1) to the pole tail (section 10).

As shown in Fig. 3c, it is found that although the rods C and D operate the fishing rod at the same casting speed, as for the artificial lure speed, the speed of the rod D increases after time 4, and the speed continues to increase until time 20. Moreover, as shown in Fig. 3d, regarding the total strain energy, it is also found that the total strain energy of rod D becomes the largest earlier (rod D becomes the largest near time 8 and rod C becomes the largest near time 11), and its The total strain energy is also accumulated more, and then more energy is released.

In this way, it is found that if the strain energy changes in time series data in Fig. 3a, b, and d, the strain energy of the rod increases the speed of the artificial bait during the process that the strain energy is accumulated and then released.

In this way, in the case that the use of the fishing rod is a throwing action, from the time change of each interval of the strain energy of each rod and the time change of the total strain energy of each rod, it is possible to accurately predict which kind of rod Can further increase the speed of the artificial lure.

With the evaluation method according to an embodiment of the present invention, using dynamic data such as strain energy of the fishing rod makes it possible to evaluate more objectively and accurately the performance of the fishing rod corresponding to the actual use state and movement of the fishing rod.

Next, referring to FIG. 4, the time change of the strain energy of the entire fishing rod is shown when the use state of the fishing rod is the pulling-in motion of the fishing rod. In FIG. 4, regarding each of rod A and rod B, the horizontal axis represents time, and the vertical axis represents strain energy. The time system is divided into 20 from the beginning of the zoom-in to the end and expressed as time 0-20.

As shown in the figure, it is found that the strain energy of the rod B is greatly accumulated and released in a burst from the start of the pull-in action to time 5. From this, it was found that rod B can bring the fish closer to rod A earlier than rod A.

Then, between time 5-8, rod B becomes a state in which strain energy is accumulated, and rod A balances the accumulation and release of strain energy. Based on this, it is found that rod B is the fish that hardly moves, and rod A is almost constant when the fish approaches.

It was found that the accumulation of strain energy of rod B was unstable between time 8-14. On the other hand, it was found that the accumulation of strain energy of rod A was stably performed. From this, it was found that the rod A can move the fish closer at a constant speed, and the difference with the rod B is widened. The reason for this can be considered because the rod of rod B tends to shake easily, and the rigid connection between the nodes is not good.

Then, between time 14 and later, both rod A and rod B release the same strain energy as the entire rod display.

Fig. 5 shows the time change of strain energy in the rod section 7-11 (#02 section) of rod A and rod B. Here, the section refers to each section in the case where each pole is divided into four sections, and the section is divided into section #01 to section #04 from the head to the tail of each pole. Each section is also divided into sections. Section #01 is divided into sections 1-6, section #02 is divided into sections 7-11, section #03 is divided into sections 12-15, and section #04 is divided into sections 16- 18. The marked places in each section are #01 section with 7 places, #02 section with 5 places, #03 section with 4 places, and #04 section with 3 places. In addition, the number of marked positions may be appropriately changed in accordance with the length of the rod (the length of the section) or the condition of the rod (a state where the rod is bent, a state where the rod is not bent, etc.). Furthermore, the sections may be divided at even intervals, or may be provided at narrower intervals as they move toward the head. In the case of Fig. 5, although the rod heads where the rod is easily deformed are preferably provided with sections at narrower intervals, other methods may be used. The horizontal axis represents time, and the vertical axis represents strain energy. As shown in the figure, it is found that in this rod section, both rod A and rod B tend to increase in strain energy from the beginning to the end. In addition, it was found that the strain energy of rod A was significantly more accumulated than the strain energy of rod B before and after the section 10 was passed. In this way, it was found that the rod A was relatively stable when the rod was erected to draw the fish closer, and it played a large role in restraining the movement of the fish. Moreover, it was determined that the fish would not jump around when they arrived, and the fish could be caught according to the intention of the angler.

Fig. 6 shows the time change of strain energy in the rod section 16-18 (section #04) of rod A and rod B. Here, the section refers to each section in the case where each pole is divided into four sections, and the section is divided into section #01 to section #04 from the head to the tail of each pole. Each section is also divided into sections. Section #01 is divided into sections 1-6, section #02 is divided into sections 7-11, section #03 is divided into sections 12-15, and section #04 is divided into sections 16- 18. This section may be divided at equal intervals, or may be provided at narrower intervals as it goes toward the head of the rod. In the case of FIG. 6 as well, although it is preferable to arrange the sections at narrower intervals for the rod heads where the rod is easily deformed, other methods may be used. The horizontal axis represents time, and the vertical axis represents strain energy. Since the rod is horizontal at the beginning, it plays an important role in moving the fish. As shown in the figure, it shows how the strain energy on the rod B increases immediately after the start, but it releases the strain energy as the rod stands up. On the rod B, due to the poor rigid connection between the nodes, the approach of the fish is temporarily stopped. On the other hand, as shown in the figure, although the strain energy accumulation of rod A is not large right after the start, the fish will approach steadily due to the good balance between the accumulation and release of strain energy.

It is clear from Figures 5 and 6 that compared to the accumulation of energy in the tail section of pole B until the end, the energy of pole A is gradually reduced. Therefore, as the fish approaches, the pole head is more responsible for the role of bringing the fish closer. And go by.

With the evaluation method according to an embodiment of the present invention, by using dynamic data of the strain energy of the fishing rod, a more objective and accurate performance evaluation of the fishing rod corresponding to the actual use state and movement of the fishing rod is possible.

Next, referring to FIGS. 7 and 8, the time change of the strain energy and the change of the supporting force of a person are shown when the use state of the fishing rod is the action of fishing the crucian carp by the fishing rod, respectively. In FIG. 7, regarding each of rod A and rod B, the horizontal axis represents time, and the vertical axis represents strain energy. The time is displayed in 15 divisions from the start of the fishing to the end. In FIG. 8, with respect to each of rod A and rod B, the horizontal axis represents time, and the vertical axis represents human support. Similarly, the time is displayed in 15 divisions from the start of the fishing to the end.

Looking at the graphs, it is clear that the accumulation and release of strain energy on the rod B does not proceed smoothly, and the person's supporting force changes greatly. On the other hand, it was found that the accumulation and release of strain energy on rod A were effectively carried out throughout the entire movement, and that the supporting force of the person also moved steadily at about 90% of rod B. In this way, it was found that the rod A can perform the fishing action earlier than the rod B, and the load on the person is also less.

With the evaluation method according to an embodiment of the present invention, by using dynamic data of the strain energy of the fishing rod, a more objective and accurate performance evaluation of the fishing rod corresponding to the actual use state and movement of the fishing rod is possible.

Here, the performance evaluation of the fishing rod according to an embodiment of the present invention can also be used for the action of the hook, that is, the evaluation of the convergence of the shake of the rod tip and the response speed of the rod tip. Furthermore, the performance evaluation of the fishing rod according to an embodiment of the present invention can also be used for the evaluation of the handling performance of fishing sets, artificial lures, and the like. Furthermore, the performance evaluation of the fishing rod according to an embodiment of the present invention can also be used for the evaluation of sensitivity, that is, the behavior of fish biting hooks and artificial lures.

The size, material, and arrangement of each element described in this specification are not limited to the content clearly described in the embodiment, and each element can have any size, material, and arrangement that can be included in the scope of the present invention. The way is deformed. Furthermore, elements that are not explicitly described in this specification may be added to the described embodiments, or a part of the elements described in the respective embodiments may be omitted.

1: Measuring system 8: mark 10: Fishing rod 20: Hammer 30: Measuring camera

Fig. 1 is an overall configuration diagram of an evaluation system according to an embodiment of the present invention. Fig. 2 is a diagram showing the flow of an evaluation method according to an embodiment of the present invention. Fig. 3a is a graph showing the temporal change of strain energy in an evaluation method according to an embodiment of the present invention. Fig. 3b is a graph showing the temporal change of strain energy in the evaluation method according to an embodiment of the present invention. Fig. 3c is a graph showing changes in lure speed and head speed in the evaluation method according to an embodiment of the present invention. Fig. 3d is a graph showing the time change of the total strain energy in the evaluation method according to an embodiment of the present invention. Fig. 4 is a graph showing the temporal change of strain energy in the evaluation method according to an embodiment of the present invention. Fig. 5 is a graph showing the temporal change of strain energy in the evaluation method according to an embodiment of the present invention. Fig. 6 is a graph showing the temporal change of strain energy in the evaluation method according to an embodiment of the present invention. Fig. 7 is a graph showing the temporal change of strain energy in the evaluation method according to an embodiment of the present invention. Fig. 8 is a graph showing a time change of a person's supporting force in an evaluation method according to an embodiment of the present invention.

1: Measuring system

8: mark

10: Fishing rod

20: Hammer

30: Measuring camera

Claims (10)

A fishing rod evaluation method characterized by calculating the strain energy at a predetermined position from the tip of the fishing rod to the tail when the fishing rod is used, and evaluating the fishing rod based on the change in the strain energy at the predetermined position. Such as the fishing rod evaluation method of claim 1, wherein the fishing rod is evaluated based on the speed and acceleration of the fishing rod when the fishing rod is used. Such as the fishing rod evaluation method of claim 1 or claim 2, wherein the calculation of the strain energy at the specified position is the extraction of the time series data of the strain energy at the specified position. Such as the fishing rod evaluation method of any one of claim 1 to claim 3, wherein the performance of the fishing rod is evaluated based on the change in strain energy at the specified position and the state of use of the fishing rod. According to the fishing rod evaluation method of any one of claims 1 to 4, the change in the strain energy of the load given to the angler holding the fishing rod is calculated, and the fishing rod is evaluated using the load. Such as the fishing rod evaluation method of claim 4, wherein the use state of the fishing rod is the throwing action of the fishing rod. Such as the fishing rod evaluation method of claim 4, wherein the use state of the fishing rod is the pulling-in action of the fishing rod. Such as the fishing rod evaluation method of claim 4, wherein the use state of the fishing rod is the fishing rod's fishing action. Such as the fishing rod evaluation method of any one of claim 1 to claim 8, wherein the change of the strain energy is the accumulation and release of the strain energy at the specified position. Such as the fishing rod evaluation method of any one of claim 1 to claim 9, wherein the prescribed position is a part or plural positions of the fishing rod.

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