Rotation detection device, rotation detection system, and squid fishing system

Abstract

To provide a technology for detecting gut entanglement in the sea in squid fishing operation using a squid fishing machine as early as possible to enable early restoration.SOLUTION: A rotation detector 10 for detecting rotation r of a driven-side rotary body R that rotates according to rotation q of a driving-side rotary body Q comprises: a base body 2 with a specification for attachment to a rotation shaft X of the driven-side rotary body R; a pair of acceleration sensors 3A, 3B provided on the base body 2; and a signal processing unit 4 for transmitting information with respect to the rotation r of the driven-side rotary body R acquired by the acceleration sensors 3A, 3B to the outside using a radio system.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a rotation detection device, a rotation detection system, and a squid fishing system, and relates to a rotation detection device etc. highly useful in the industrial field, which can exhibit excellent effects even as, for example, an early detection method for tag entanglement troubles in single-line squid fishing.

Background Art

[0002] FIG. 13 is an explanatory diagram showing a situation where tag entanglement troubles etc. occur in a single-line fishing method using a squid fishing machine. As shown in the figure, the single-line fishing method using the squid fishing machines SC is performed by operating a plurality of squid fishing machines SC, SC, ··· installed on the ship all at once. The tag BD attached with the squid fishing hook ND (bait, hereinafter simply referred to as "squid hook") is paid out into the sea and descends as each squid fishing machine SC rotates the drum DM, and the squid caught on the squid hook ND is lifted onto the ship by winding up the tag BD with the drum DM. The above troubles are troubles in which, during operation, due to changes in the ocean current or other organisms such as sharks entangling the squid hook ND, the squid hook ND gets entangled with the squid hook ND operating on another squid fishing machine SC, making normal operation impossible. There are also troubles caused by the tag BD breaking and the weight (plummet) WT coming off.

[0003] FIG. 14 is an explanatory diagram showing a conventional method for detecting tag entanglement. FIG. 15 is a photographic view showing an example of the front roller shown in FIG. 14. As shown in these figures, the discovery of conventional tag entanglement is performed by providing a hook HK for detecting the snagging of the tag BD near the front roller MR. That is, when tag entanglement occurs, the tag BD and the squid hook ND are wound up by the drum DM in that state. When they reach the position of the front roller MR, they are caught by the hook HK attached to the peripheral device of the front roller MR, and the emergency stop switch (emergency stop means) ES on the back of the squid fishing machine connected to this is activated by the operation of the hook HK, automatically stopping the squid fishing machine SC. After stopping, the tag entanglement is confirmed, and its recovery and necessary safety measures are taken. Note that FIG. 16 is an explanatory diagram showing a conventional emergency stop operating mechanism, and the comparison with FIG. 12 according to the present invention will be described later.

[0004] Conventionally, many patent applications and the like have been made regarding the technology related to squid fishing machines. For example, in Patent Document 1 cited below, when a squid caught by a squid fishing hook passes through a guide roller and falls into the sea after detaching from the squid fishing hook, in order to prevent this and improve fishing efficiency, when guiding a fishing line connecting a large number of squid fishing hooks into the ship by a winch via a guide roller, a needle rod is projected substantially vertically on the peripheral surface of the body of the guide roller to pierce the squid caught by the squid fishing hook with the needle rod and transfer and guide the guide roller while preventing its fall into the sea. Such a technology is disclosed.

[0005] Also, Patent Document 2 discloses a fishing winching device that can reduce the influence of the swinging caused by both the pitching phenomenon and the rolling phenomenon of the hull on the winching operation of the fishing gear. It is mounted on the hull and includes a rotating drum for winding up and down the fishing gear, a driving means for driving the rotating drum, a detecting means for detecting the vertical swinging speed based on the pitching phenomenon of the hull and the angular velocity of swinging around the axis extending in the front-rear direction of the hull based on the rolling phenomenon of the hull, and a control means for controlling the driving means according to the signal from the detecting means.

Prior Art Documents

Patent Document

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] To clarify the problems of the prior art described above with reference to FIG. 13 and the like, further explanation will be added. FIG. 17 is an explanatory diagram showing a normal operation situation using a squid fishing machine. In the prior art, until the tag BD entangled by the entanglement of squid hooks ND or the like is wound up to the position of the hook HK shown in FIG. 14 and this is activated, it is impossible to know the already-occurred tag entanglement, and when the detection mechanism by the hook HK is activated, it is often already in a complicated entanglement. In such a case, it takes a considerable amount of time to unwind the tag BD for restoration work. A method that can detect this early when entanglement occurs in the sea and stop the squid fishing machine SC is desired. In this figure, A, B, C, D, E, and F are drums DM, and the No. 1 machine, No. 2 machine, and No. 3 machine are squid fishing machines SC. The same applies to FIG. 18 described later.

[0008] Also, when the weight (plumb bob) WT suspended from the tip of the squid hook ND comes off during operation due to aging or overload of the tag BD or the like, if the squid fishing machine SC winds up the drum DM in this state, the squid hook ND may fly and cause harm such as getting caught on a person. However, in the prior art, it is impossible to sense this danger and stop the squid fishing machine SC. A safer method is required.

[0009] As shown in Fig. 17, the squid fishing machine SC is operated by repeatedly lowering and raising the drum DM. The squid needle ND wound up by the upward movement of the drum DM may get caught on the tag BD inside the drum DM depending on the situation, and when the drum DM starts to lower again, the squid needle ND may be wound up without descending. This is called reverse winding (reverse winding phenomenon). If the operation continues with reverse winding occurring, the squid needle ND will come off the front roller MR and get entangled, accumulating in one place. In such a case, it will take a considerable amount of time to recover. When such a situation occurs, the current device cannot detect this and stop the squid fishing machine SC.

[0010] Fig. 18 is an explanatory diagram showing the operation situation when using a squid fishing machine and attaching tags only to one side of the drum. As shown in the figure, when changing the type of squid needle ND, etc., the squid fishing machine SC may be operated with the squid needle ND attached only to one side of the drum DM. Also in this case, each of the above problems may occur, but the current device cannot detect this and stop the squid fishing machine SC. There is a need for a more practical safety countermeasure technology.

[0011] Therefore, the problem to be solved by the present invention is to eliminate such problems of the prior art, to discover and detect entanglement of tags in the sea during squid fishing operations using a squid fishing machine as early as possible, and to provide a technology that enables early recovery. Further, the problem of the present invention is to provide a technology that can effectively prevent the reverse winding phenomenon in which the squid needle is wound up without descending when the drum descends. Also, in these tag entanglement troubles, there is a risk that the squid needle may fly due to tag breakage, etc., and solving the problem of the present invention also serves as an effective preventive measure against such risks.

[0012] Furthermore, the problem of the present invention is not limited to the technology for early detection of troubles when using a squid fishing machine, but in all industrial fields where it is useful to directly detect the rotation of a driven rotating body that rotates by the rotation of such a driving side rotating body, to provide a rotation detection device and a rotation detection system that can directly detect the rotation of the driven rotating body.

Means for Solving the Problems

[0013] The inventor of the present application studied the above problems. As a result, the inventor focused on the fact that when the tags get entangled in the sea, there is always an abnormality in the rotation of the front roller. That is, the occurrence of tag entanglement in the sea can be grasped at an early stage by immediately detecting and sensing the abnormal rotation of the front roller during the operation of the squid fishing machine. In fact, if the crew of the squid fishing boat can detect the abnormal rotation of the front roller before the detection by the above hook method, the operation of the squid fishing machine can be immediately stopped, and the drum can be manually wound up to easily recover the entangled squid hook in some cases. The earlier the discovery, the shorter the recovery time can be.

[0014] However, when doing other work such as packing, or when a problem occurs in an unmonitored squid fishing machine among multiple machines, prompt response is impossible, and there is a limit to the monitoring of the front roller by such crew members, and it is ultimately not reliable. It is necessary to devise a certain new detection method. The inventor focused on the phenomenon of abnormal rotation of the front roller. On the other hand, as a method for detecting rotation, there are conventionally methods using optical sensors or magnetic sensors, etc., but the use environment is too harsh due to the ordinary presence of seawater, squid ink, etc., and no suitable method can be found.

[0015] The inventor attached a rotation detection device having two acceleration sensors to the axis of the front roller, wirelessly sent information related to the rotation status of the two front rollers to a receiving unit installed inside the squid fishing machine, monitored the relationship between the operation status of the squid fishing machine, that is, the rotation of the driving-side rotating body and the rotation of the two front rollers, that is, the driven-side rotating body, and came up with a configuration to immediately stop the squid fishing machine in case of an abnormality. And by this, it was found that the above problems not limited to the squid fishing field can be solved, and based on this, the present invention has been completed. That is, the invention claimed in the present application, or at least the disclosed invention, as means for solving the above problems is as follows.

[0016] [1] A rotation detection device for detecting the rotation of a driven-side rotating body that rotates due to the rotation of a driving-side rotating body, comprising a base body having a specification for attachment to the driven-side rotating body, a pair of acceleration sensors provided on the base body, and a signal processing unit that wirelessly transmits information related to the rotation of the driven-side rotating body obtained by the acceleration sensors to the outside. and by using this device, detection rotation speed information in each of the acceleration sensors and rotation direction information obtained by comparing detection signals can be obtained A rotation detection device characterized by the above. [2] The rotation detection device according to [1], which is attached to each of a plurality of driven-side rotating bodies and is used for monitoring the rotation state between the driven-side rotating bodies. [3] The rotation detection device according to either [1] or [2], which is used for detecting the rotation of a front roller constituting a squid fishing machine. [4] The rotation detection device according to any one of [1], [2], and [3], wherein the base body has an aspect ratio of the major axis to the minor axis exceeding 1. 5 [5] The signal processing unit is characterized by including an arithmetic processing unit that performs a predetermined arithmetic process on the detection signal obtained by the acceleration sensor to generate the detected rotation speed information and rotation direction information. in any one of (1), (2), (3), (4) The rotation detection device described above.

[0017] 6 [6] The signal processing unit transmits the detection signal obtained by the acceleration sensor to the outside, and the detected rotation speed information and rotation direction information are generated outside the device. in any one of (1), (2), (3), (4) The rotation detection device described above. 7 attached to each of the driven rotors with a number [1], [2], [3], [4], [5] The rotation detection system comprising the rotation detection device according to any one of the above and a receiving device that receives information transmitted from the signal processing unit of the rotation detection device, and is used for monitoring the rotation state between each driven-side rotating body or each driven rotating body based on the detected rotation speed information and rotation direction information. 8 [7] Attached to each of one or more driven-side rotating bodies 6 ​​​​​A rotation detection system comprising the rotation detection device described in , and a receiving device that receives information transmitted from the signal processing unit of the rotation detection device, the receiving device comprising a receiving-side arithmetic processing unit that generates detection rotation speed information and rotation direction information based on the received detection signal, and being used for monitoring the rotation states between each driven-side rotating body or each driven rotating body by the detection rotation speed information and the rotation direction information. 9 The rotation detection system according to , characterized in that it comprises a setting command device that transmits, by a wireless method, settings for communication connection in the receiving device and information for other settings to the receiving device. 7 8 The rotation detection system according to any one of . 10 The rotation detection system according to , characterized in that it comprises an emergency stop means for emergency stopping the rotation of the driving-side rotating body in a predetermined state based on monitoring of the rotation states between each driven-side rotating body or each driven rotating body. 7 8 9 The rotation detection system according to any one of . 11 The rotation detection system according to , characterized in that it comprises driving-side operation detection means for detecting the operation of the driving-side rotating body. 7 8 9 10 The rotation detection system according to any one of .

[0018] 12 The rotation detection system according to , characterized in that the driving-side rotating body is driven by a motor, and the driving-side operation detection means is a current sensor that detects the current related to the driving of the motor. 11 The rotation detection system according to . 13 The rotation detection system according to , characterized in that the detection information by the driving-side operation detection means is transmitted to the receiving device. 11 12 The rotation detection system according to any one of . 14 ​​​​​​​​​​​​​〕 Based on the monitoring of the rotation state between each driven-side rotating body or each driven rotating body, there is an emergency stop means for emergency stopping the rotation of the driving-side rotating body in the case of a predetermined state, and it is formed so as not to operate the emergency stop means when the detection by the driving-side operation detection means is not made. 11 〕, 12 〕, 13 〕 The rotation detection system according to any one of , , . 〔 15 〕 It is characterized by being for detecting the rotation of the front roller constituting the squid fishing machine. 7 〕, 8 〕, 9 〕, 10 〕, 11 〕, 12 〕, 13 〕, 14 〕 The rotation detection system according to any one of , , , , , , , , , , , , , , . 〔 16 〕 〔 7 〕, 8 〕, 9 〕, 10 〕, 11 〕, 12 〕, 13 〕, 14 〕, 15 〕 The squid fishing system characterized by comprising the rotation detection system according to any one of , , , , , , , , , , , , , , , , , . 〔 17 〕 It is characterized in that the information received by the receiving device is used for motor drive control. 16 〕 The squid fishing system according to .

Advantages of the Invention

[0019] Since the rotation detection device, rotation detection system, and squid fishing system of the present invention are configured as described above, according to these, in squid fishing operations using a squid fishing machine, troubles such as entanglement of tags in the sea can be discovered and detected as early as possible, the tag trouble can be quickly resolved and restored, and the operation can be resumed early. In addition, it is possible to effectively prevent the reverse winding phenomenon in which the squid hook does not descend but winds up when the drum descends. Further, in the case of tag entanglement trouble, there is a risk that the squid hook will fly off due to tag breakage or the like, but according to the present invention, such a risk can be effectively prevented. Furthermore, when the tag descends deeper to near the seabed and tag entanglement occurs, this can be discovered and dealt with early. That is, according to the present invention, since the tag entanglement can be discovered early, the time and labor for restoring the squid hook can be reduced, and a safe operation can be performed for the crew.

[0020] Moreover, according to the rotation detection device, rotation detection system, and squid fishing system of the present invention, based on the detected rotation speed of the driven-side rotating body, etc., it is also possible to obtain information on the motion state of the overall driving-side rotating body - driven-side rotating body coupling mechanism and the motion state in the environment where the overall body is placed, and use it for controlling the motion state of the overall body. For example, in a squid fishing system, when the squid fishing machine is in a descending operation and the ship is rolling and pitching and the center of gravity is lowered, the rotation speed of the front roller will slow down, and vice versa during the ascending operation. Thus, based on the rotation speed of the front roller, the rolling amplitude of the waves during operation can be known. By sharing this information, it is also possible to control the operation speed according to the waves and swells.

[0021] Furthermore, according to the rotation detection device and rotation detection system of the present invention, it is not limited to the technology for early discovery of troubles when using a squid fishing machine, and the rotation of the driven-side rotating body that rotates due to the rotation of the driving-side rotating body can be directly detected. Therefore, in all devices and systems where it is useful to directly detect the rotation of the driven-side rotating body, and in the industrial fields related to them, such effects can be obtained by using the present invention.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 2-2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 11-2

Figure 12

Figure 12-2

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Mode for Carrying Out the Invention

[0023] Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a conceptual explanatory diagram showing the basic configuration of the rotation detection device of the present invention. In the figure, (a) shows the mode in which the present rotation detection device is used, and (b) shows the configuration of the present rotation detection device. As shown in these, the rotation detection device 10 is a rotation detection device 10 for detecting the rotation r of the driven-side rotating body R that rotates by the rotation q of the driving-side rotating body Q, and includes a base body 2 having a specification for attaching to the driven-side rotating body R, a pair of acceleration sensors 3A and 3B provided integrally with the base body 2, and a signal processing unit 4 that transmits information related to the rotation r of the driven-side rotating body R obtained by the acceleration sensors 3A and 3B to the outside by a wireless method such as Bluetooth (Registered Trademark) and the like as the main configuration. The attachment position of the present rotation detection device 10 can preferably be the rotation axis of the driven-side rotating body R.

[0024] The rotation detection device 10 of the present invention having such a configuration is attached to the driven-side rotating body R by its base body 2 and used. By rotating together with the driven-side rotating body R, the pair of acceleration sensors 3A and 3B provided on the base body 2 obtain information related to the rotation r of the driven-side rotating body R. The information related to this rotation r is transmitted to the outside by the signal processing unit 4 in a wireless manner. In this way, the rotation r of the driven-side rotating body R rotated by the rotation q of the driving-side rotating body Q is detected outside the rotation detection device 10. By using two acceleration sensors (3A, 3B), it is possible to detect the rotational speed and discriminate between forward and reverse rotations. This will be described later with reference to FIGS. 3 and 4.

[0025] FIG. 2 is a conceptual explanatory diagram showing a case where the rotation detection device of the present invention is used for a plurality of driven-side rotating bodies. In the figure, the number of driven-side rotating bodies is two, but it is not limited to this, and three or more may be used. As shown in the figure, the rotation detection device 10 can be attached to each of the plurality of driven-side rotating bodies R1, R2,... and used to monitor the rotation state between the driven-side rotating bodies R1 - R2 and the like.

[0026] That is, the rotation detection device 10 of the present invention is attached to each of the plurality of driven-side rotating bodies R1, R2,... by the base body 2, and information related to the rotation r1 of the driven-side rotating body R1, information related to the rotation r2 of the driven-side rotating body R2,... is obtained by the pair of acceleration sensors 3A and 3B provided respectively. The information related to these rotations r1, the information related to the rotation r2,... is transmitted to the outside by the signal processing unit 4 in a wireless manner. By using two acceleration sensors (3A, 3B), it is possible to detect the rotational speed and discriminate between forward and reverse rotations in each of the driven-side rotating bodies R1, R2,...

[0027] In this way, the rotation r1 of the driven rotor R1, which rotates due to the rotation q of the driving rotor Q, and the rotation r2 of the driven rotor R2, etc. are detected outside the rotation detection device 10. The rotation q of the single common driving rotor Q causes rotations r1, r2, etc. in the driven rotors R1, R2, etc., but by obtaining information related to each rotation of each driven rotor externally, it is possible to know any differences or similarities in the rotational state between each driven rotor R1, R2, etc. In other words, it can be used to monitor the rotational state between each driven rotor R1-R2, etc., and is useful for detecting the rotation of the front roller that constitutes a squid fishing machine.

[0028] That is, as shown in the above-mentioned Figures 14 and 15, the two front rollers, which are the driven rotors, rotate in conjunction with each other when the squid fishing machine is operated and driven, and by attaching this rotation detection device 10 to each front roller, it is possible to detect the rotation of each and monitor the rotation difference and rotation direction. In the case of a normal operating state where no tangling of the fishing line occurs, the two front rollers rotate normally, and at this time, the rotation difference between the two front rollers is small and the rotation directions are equal and forward. Therefore, if there is a certain degree of rotation difference between the two or the rotation directions are different, it is determined that an abnormality has occurred in the rotation state between the two front rollers, that is, tangling of the fishing line has occurred.

[0029] The rotation of each front roller detected by the pair of acceleration sensors 3A and 3B provided per rotation detection device 10 is transmitted to the outside by the signal processing unit 4 via a wireless method such as Bluetooth, and is received by the outside. Based on the rotation detected by the acceleration sensor 3A, etc., information such as the number of rotations, the direction of rotation, etc. is finally obtained, and the presence or absence of an abnormality is judged, and the subsequent measures, i.e., the automatic emergency stop operation of the squid fishing machine is performed. 2-2 is a conceptual explanatory diagram showing a case where the rotation detector of the present invention is used in parallel with a plurality of driven rotors, and such a use is also within the scope of the present invention.

[0030] FIG. 3 is an explanatory diagram showing a configuration example of the rotation detection device of the present invention. Also, FIG. 4 is a graph schematically showing the rotation detection pattern in the angle sensor of the rotation detection device shown in FIG. 3, where (a) in the figure shows the forward rotation and (b) shows the reverse rotation. As shown in FIG. 3, the rotation detection device 110 has a substrate 12 of which can be in a form with a major axis / minor axis ratio exceeding 1. In the configuration example of the figure, it is an oval shape, and acceleration sensors 13A and 13B are provided near both poles thereof. Further, a mounting hole 15 for mounting on the driven-side rotating body is provided at the center. Note that, for example, in the case of mounting the front roller of a squid fishing machine, etc., the design of the specifications according to the application, such as a waterproof specification, can be freely determined as appropriate.

[0031] When the driven-side rotating body rotates in the forward rotation direction Fw shown in FIG. 3, the rotation detection device 110 attached thereto also rotates in the forward rotation direction Fw. At this time, the rotation detection pattern is shown as (a) in FIG. 4. Note that in both graphs (a) and (b), the horizontal axis represents time t and the vertical axis represents acceleration (acceleration value k). As shown in (a), when the rotation detection device 110 and the driven-side rotating body are rotating in the forward rotation direction Fw, changes over time such as detection by the acceleration sensor 13A, detection by the acceleration sensor 13B, detection by the acceleration sensor 13A,... occur.

[0032] On the other hand, when the rotation detection device 110 and the driven-side rotating body are rotating in the reverse rotation direction Bw, changes over time such as detection by the acceleration sensor 13B, detection by the acceleration sensor 13A, detection by the acceleration sensor 13B,... occur. Due to the difference in the pattern of such changes over time, it becomes possible to discriminate between forward and reverse rotations. Also, based on the output acceleration (acceleration value k), rotation can be detected. In this way, by using this device 110, it is possible to obtain the detected rotation information in each of the acceleration sensors 13A and 13B, and the rotation direction information by comparing the detection signals.

[0033] As shown in the basic configuration in FIG. 1 and the configuration example in FIG. 3, the signal processing units 4 and 14 of the present rotational speed detection devices 10 and 110 can be configured to include an arithmetic processing unit that performs a predetermined arithmetic process on the detection signals obtained by the acceleration sensors 3A, etc., 13A, etc., to generate the above-described detected rotational speed information and rotational direction information. In the present rotational speed detection device 10 or the like having such a configuration, a predetermined arithmetic process is performed on the detection signals obtained by the acceleration sensors 3A or the like by the arithmetic processing unit in the signal processing unit 4 or the like, and the detected rotational speed information and rotational direction information are generated and transmitted to the outside. That is, in this case, the signal processing unit 4 calculates the signals obtained from the acceleration sensors 3A or the like as rotational speed and forward / reverse rotation information, and transmits it to the outside by wireless communication means such as Bluetooth.

[0034] On the other hand, the signal processing units 4 and the like of the present rotational speed detection device 10 or the like can be configured to transmit the detection signals obtained by the acceleration sensors 3A or the like to the outside as they are without performing any special arithmetic processing or the like on the detection signals, and the above-described detected rotational speed information and rotational direction information are generated outside the device 10 or the like. In the present rotational speed detection device 10 or the like adopting such a configuration, the signal processing units 4 and the like transmit the detection signals obtained by the acceleration sensors 3A or the like to the outside as they are, and the above-described detected rotational speed information and rotational direction information are generated outside the device 10 or the like by performing a predetermined arithmetic process.

[0035] FIG. 5 is a conceptual explanatory diagram showing the basic configuration of the rotation detection system of the present invention. As shown in the figure, the rotation detection system 300 includes rotation detection devices 10, 10,... each having any of the above-described configurations, attached to one or a plurality of driven-side rotators that rotate by the rotation of the drive-side rotator, and a receiving device 20 that receives information transmitted from the signal processing units 4, 4,... of the rotation detection devices 10, 10,.... The main configuration is a system that is used for monitoring the rotational state between each driven-side rotator or each driven rotator based on the detected rotation speed information and rotation direction information. Note that the number of the driven-side rotators according to the configuration of the rotation detection system of the present invention and the rotation detection devices attached thereto may be one, but the present invention mainly assumes a plurality of cases. Therefore, hereinafter, these will be described as a plurality.

[0036] According to the rotation detection system 300 having such a configuration, in a mechanism in which a plurality of driven-side rotators to which the rotation detection device 10 is attached are connected to the drive-side rotator, when these plurality of driven-side rotators rotate due to the rotation of the drive-side rotator, the information on each rotation detected by the angle sensors 3A, etc., 3A, etc.,... of the rotation detection devices 10, 10,... attached to each driven-side rotator is transmitted wirelessly from each signal processing unit 4, 4,... to the outside of the device 10, 10,... and to the receiving device 20 that constitutes the system 300. As a result, finally, the detected rotation speed information and rotation direction information are obtained, and the rotation detection system 300 can be used for monitoring the rotational state between each driven-side rotator or each driven rotator.

[0037] In the rotation detection system 300 shown in this figure, the signal processing units 4, 4,... of the rotation detection devices 10, 10,... are provided with an arithmetic processing unit that performs predetermined arithmetic processing on the detection signals obtained by acceleration sensors 3A, 3A,... etc. to generate detected rotation speed information and rotation direction information. In the case of such a configuration, in this system 300, the detection signals acquired by the acceleration sensors 3A, etc. are subjected to predetermined arithmetic processing in the arithmetic processing unit within the signal processing units 4, etc., and detected rotation speed information and rotation direction information are generated, which are transmitted to the receiving device 20. On the other hand, as will be described later with reference to FIG. 6, the rotation detection system of the present invention is not limited to such a configuration and effects.

[0038] Note that in the receiving device 20, the rotations of the driven-side rotating bodies detected and transmitted by the respective rotation detection devices 10, 10,... are received. However, it is not limited to the receiving function, and a part (component) that executes a function of comparing the received rotation information of each and determining the normality / abnormality of the rotation state of the driven-side rotating body, and further, in addition to this, a part (component) that executes drive control of the drive-side rotating body based on the determination result of the rotation state can also be configured.

[0039] For example, when this system 300 is used for detecting the rotation state of the front roller of a squid fishing machine, in the receiving device 20, the rotations of the respective front rollers detected and transmitted by the respective rotation detection devices 10, 10,... are received. However, it is not limited to the receiving function, and a part that executes a function of comparing the received rotation information of each front roller and determining the normality / abnormality of the rotation state, and further, in addition to this, a part that executes emergency stop drive control of the squid fishing machine based on the determination result of the rotation state can be configured. By stopping the squid fishing machine early, it is possible to shorten the recovery time of the squid hook and take safety measures for the crew.

[0040] The wireless method used between the signal processing unit 4 of each rotation detection device 10 and the corresponding receiving device 20 is Bluetooth (Registered Trademark)Appropriate methods such as this can be used as needed. When wirelessly connecting a plurality of driven-side rotators to a common / single driving-side rotator, specific usage methods and specifications such as applying multi-pairing can be designed as appropriate.

[0041] FIG. 6 is a conceptual explanatory diagram showing another configuration of the rotation detection system of the present invention. As shown in the figure, the rotation detection system 2300 includes rotation detection devices 210, 210,... each having any of the above-described configurations, attached to one or a plurality of driven-side rotators that rotate due to the rotation of the driving-side rotator, and a receiving device 220 that receives information transmitted from the signal processing units 24, 24,... of the rotation detection devices 210, 210,.... The receiving device 220 is further configured with a receiving-side arithmetic processing unit 226 that generates detection rotation speed information and rotation direction information based on the received detection signal. Note that the number of driven-side rotators and the rotation detection devices attached thereto according to the configuration of the rotation detection system of the present invention may be one, but the present invention mainly assumes a plurality of cases. Therefore, hereinafter, these will be described as a plurality.

[0042] According to the rotation detection system 2300 having such a configuration, in a mechanism in which a plurality of driven-side rotators to which the rotation detection device 210 is attached are connected to the driving-side rotator, when these plurality of driven-side rotators rotate due to the rotation of the driving-side rotator, information (detection signals) of each rotation detected by acceleration sensors 23A, etc., 23A, etc.,... of the rotation detection devices 210, 210,... attached to each driven-side rotator are transmitted wirelessly from their respective signal processing units 4, 4,... to the outside of the devices 210, 210,... and to the receiving device 220 that constitutes the system 2300.

[0043] When the receiving device 220 receives the detection signals transmitted from the signal processing units 24, 24, ···, based on these signals, the detection rotation speed information and the rotation direction information are generated in the receiving-side arithmetic processing unit 226. In this way, the detection rotation speed information and the rotation direction information are obtained, and the present rotation detection system 2300 can be used to monitor the rotation states between the respective driven-side rotating bodies or the respective driven rotating bodies.

[0044] FIG. 7 is a conceptual explanatory diagram showing the configuration of the rotation detection system of the present invention provided with a setting command device. As shown in the figure, the present rotation detection system 3300 can be configured to include a setting command device 370 that transmits information for setting communication connection and other settings in the receiving device 320 to the receiving device 320 by a wireless method in addition to any of the configurations described with reference to FIGS. 5 and 6. As the setting command device, a smartphone or other communicable information terminal device can be preferably used.

[0045] In the present rotation detection system 3300 having such a configuration, various pieces of setting information necessary for using the present system 3300, such as the setting for communication connection of the receiving device 320, are input in the setting command device 370 and transmitted to the receiving device 320 by a wireless method, so that necessary settings such as changing parameter values can be performed.

[0046] FIG. 8 is a conceptual explanatory diagram showing an example of use in a squid fishing machine as a configuration example of the rotation detection system of the present invention provided with an emergency stop means for the driving-side rotating body. Although two front rollers, which are driven-side rotating bodies related to the squid fishing machine, are provided, they are omitted in the figure and only one is shown. As shown in the figure, the present rotation detection system 4300 can be configured to include an emergency stop means ES that emergently stops the rotation of the driving-side rotating body (the drum of the squid fishing machine SC) DM in a predetermined state based on the monitoring of the rotation states between the respective driven-side rotating bodies (front rollers) MR, MR or the respective driven rotating bodies (front rollers) MR. Note that the transmissions from the rotation detection device 410 and the setting command device 470 are made by wireless communication means WL such as Bluetooth (registered trademark).

[0047] In the present rotation detection system 4300 with such a configuration, based on the monitoring of the rotation state between each driven rotating body (front roller) MR, or the monitoring of the rotation state of each driven rotating body (front roller) MR alone, in the case of a predetermined state where an emergency stop should be made, the rotation of the driving rotating body (the drum of the squid fishing machine SC) DM is stopped by the emergency stop means ES. That is, when the rotation state of the driven rotating body (front roller) MR detected by the rotation detection device 410 is determined to be abnormal rotation, control by the emergency stop means ES is performed. When this system 4300 is used in a squid fishing machine, a stop action is taken to the internal emergency stop circuit, and the operation of the squid fishing machine can be stopped. In this way, entanglement of tags can be discovered early, reduction of the time for restoring the squid hook, and safety measures for crew members due to malfunctions are promoted.

[0048] FIG. 9 is a block diagram of the rotation detection system of the present invention illustrated in FIG. 8. The emergency stop means ES shown in FIG. 8 is positioned as one element constituting the rotation detection system 4300 of the present invention, but as shown in this FIG. 9, the present invention is not limited thereto. That is, the emergency stop means ES is not an element constituting the rotation detection system 5300 of the present invention, but is ultimately an element for drive control of the driving rotating body that can occur by performing the rotation state monitoring action of the driven rotating body possessed by the rotation detection system 5300 - it is also possible to understand it in this way.

[0049] As described above with reference to each figure, the rotation detection device 10 etc. and the rotation detection system 300 etc. of the present invention can be suitably used for detecting the rotation of the front roller MR constituting the squid fishing machine SC, and a squid fishing system (not shown) equipped with such a rotation detection system 300 etc. is also within the scope of the present invention. And in the squid fishing system of the present invention, the configuration can be such that the information received by the receiving device 320 etc. is used for motor drive control.

[0050] The operation when the present invention is applied to a squid fishing machine will be described in detail below (see FIG. 17 above). In the operation of single-line squid fishing by driving the squid fishing machine, as long as the various tag-related problems listed above as the "problems to be solved by the invention" based on the prior art do not occur, the left and right front rollers rotate in the same direction and at the same rotational speed.

[0051] However, when the squid hooks of the tags on either the left or right front roller become entangled with the squid hooks of the tags on the adjacent squid fishing machine, the squid hook on the entangled side is pulled, and as a result, the rotation of the front roller on which this hook is hanging becomes different from the rotation of the other front roller due to changes in the rotational speed and the like. Such a difference in the rotational state between the two front rollers is detected by the rotational detection device or rotational detection system of the present invention. Thereby, the emergency stop of the squid fishing machine can be quickly activated.

[0052] Also, when a trouble occurs where the tag breaks, the sinker drops to the seabed due to the breakage of the tag, and the load on the front roller to which the tag is attached disappears. Then, the rotational speed becomes different from that of the other front roller. Such a difference in the rotational state between the two front rollers is detected by the rotational detection device or rotational detection system of the present invention. Thereby, the emergency stop of the squid fishing machine can be quickly activated.

[0053] Also, when a reverse winding phenomenon occurs, the rotational directions of the left and right front rollers are reversed. Such a difference in the rotational state between the two front rollers is detected by the rotational detection device or rotational detection system of the present invention. Thereby, the emergency stop of the squid fishing machine can be quickly activated.

[0054] FIG. 10 is an explanatory diagram showing measures when using the rotation detection system of the present invention in the case of single-drum operation. In the case of single-drum operation shown in FIG. 18 above, as shown in FIG. 12 here, the drum from which the squid hook is removed and the front roller are connected by a connecting means CJ such as a tag or rubber, so that the front roller is driven to rotate, and measures are taken so that both the left and right front rollers rotate driven in the same way. Thereby, even when various problems such as tag entanglement occur during single-drum operation, the difference in the rotation state between the two front rollers is detected by the rotation detection device or rotation detection system of the present invention, and thereby, the emergency stop of the squid fishing machine can be quickly activated.

[0055] FIG. 11 is a conceptual explanatory diagram showing the configuration of the rotation detection system of the present invention provided with drive-side operation detection means. Note that the number of driven-side rotors illustrated in this figure is not limited. As shown in the figure, the rotation detection system 6300 can be configured to include drive-side operation detection means 68 for detecting the operation of the drive-side rotor Q in addition to any of the configurations described with reference to each figure. The drive-side rotor Q can be configured to be driven by a motor. In this case, as the drive-side operation detection means 68, a current sensor for detecting the current related to the drive of the motor can be preferably used. Note that the detection information by the drive-side operation detection means 68 may be configured to be transmitted to the receiving device 620. (Note that FIG. 11-2 is a conceptual explanatory diagram showing a case where it is used in parallel for a plurality of driven-side rotors as the configuration of the rotation detection system of the present invention provided with drive-side operation detection means. Such a configuration is also within the scope of the present invention, but the following describes the configuration shown in FIG. 11.)

[0056] Since the rotation detection system 6300 is provided with the drive-side operation detection means 68, it is possible to obtain information on the rotation state of the drive-side rotating body Q, that is, information such as the presence or absence of rotation. Information on the rotation state of the drive-side rotating body can be configured to be transmitted to the receiving device 620 as shown in the figure. When the receiving device 620 has an arithmetic processing function and a drive control function with a predetermined configuration, it is possible to perform subsequent drive control based on the detection of the operation state of the drive-side rotating body. The advantages of providing the drive-side operation detection means will be described with reference to the following figures.

[0057] FIG. 12 is a conceptual explanatory diagram showing a configuration example of the present squid fishing system. As shown in the figure, the present squid fishing system 7500 is composed of a rotation detection system 7300 and a squid fishing machine SC. The receiving device (referred to as "receiver" in the figure) 720 and the drive-side operation detection means (referred to as "current detection sensor" in the figure) 78 that constitute the rotation detection system 7300 are provided in the squid fishing machine SC.

[0058] The squid fishing machine SC drives the drive unit AC by the motor MT, and this rotates the drum (not shown). The control panel CP is a device that outputs drive control for the motor MT. When an abnormality in the rotation state of the front roller MR is detected, it also serves as control for forcibly stopping the drive of the motor MT in response to the operation of the emergency stop means ES. The fact that such emergency stop control is performed via the control panel CP is common to the conventional emergency stop operation method described in FIG. 16 above, but the method of detecting the occurrence of an abnormality in the rotation state of the front roller MR is different between the prior art and the present invention.

[0059] That is, in the prior art, it was a detection method at a point in time considerably delayed from the occurrence of tag entanglement, such as the operation of the hook. In the present invention, an abnormality in the rotation state of the front roller MR immediately caused by the occurrence of tag entanglement in the sea is detected by a rotation detection device attached to the front roller MR, and this is transmitted to the receiving device 720. The reception of the rotation state abnormality information in the receiving device 720 causes the operation of the emergency stop means ES. Ultimately, the difference in such detection methods can be said to be the basis of the present squid fishing system 7500.

[0060] As shown in the figure, among the elements constituting the squid fishing system 7500, the rotation detection system 7300 includes a rotation detection device 710 attached to the front roller MR, a receiving device 720, and a setting command device (in the figure, "smartphone" as an example) 770. Between the rotation detection device 710, the setting command device 770, and the receiving device 720, they are connected by wireless communication means WL such as Bluetooth (Registered Trademark) etc. Note that the drive-side operation detection means (in the figure, "current detection sensor") 78 may be regarded as an element of the rotation detection system 7300 or an element of the squid fishing machine SC.

[0061] The advantages of the squid fishing system 7500 with such a configuration, especially by including the drive-side operation detection means 78, will be described. By installing the current sensor 78 on the power cable connecting the control panel CP and the motor MT, information on the presence or absence of rotation on the drive side can be obtained, enabling the following situation judgments.

[0062] First, when the operation of the motor MT (or the drive unit AC) is detected by the current sensor 78, but the rotation of the two front rollers MR, MR is not detected, it can be detected that the squid hooks that should be hanging on both front rollers MR, MR are in a state of being detached from the front rollers MR, MR. In this case, the emergency stop means ES can be immediately activated and recovery can be expected.

[0063] Next, when operating with only one drum, even if the other drum is not connected to the front roller MR and moved by the connecting means as shown in the previous figure 10, the abnormal rotation state of the front roller MR can be detected. It is only necessary to be able to set the required specifications as parameters from the setting command device 770.

[0064] And it is an advantage regarding the operation control of the emergency stop means ES. In the squid fishing operation using the squid fishing machine SC, there may be a case where it is necessary to move the tag BD with the squid hook attached while the motor MT (or the drive unit AC) is not operating. For example, when performing an operation to restore the entanglement of the squid hook. In this case, if the emergency stop means ES operates during the restoration work, it will be quite inconvenient.

[0065] However, by providing the drive-side operation detection means 78, when it is detected by this that the motor MT (or the drive unit AC) is not operating, by setting not to operate the emergency stop means ES by detecting the rotation of the front roller MR, such inconvenience can be avoided. The advantage of providing these drive-side operation detection means can be obtained not only in the application in the illustrated squid fishing system.

[0066] Regarding further effects of the rotation detection system of the present invention provided with the drive-side operation detection means described with reference to FIG. 11 above, it will be described while using FIG. 12-2. FIG. 12-2 is an explanatory diagram showing the trouble occurrence situation in the squid fishing method near the seabed. According to the information detected by the drive-side operation detection means (current sensor), when there is no particular change in the drive-side rotating body (motor) and the operation continues, but the rotation of the two front rollers has decelerated, it can be determined that the state where the squid hook has reached the seabed has occurred. Thereby, the squid fishing machine can be quickly stopped emergently, and the time required for restoration can be significantly shortened.

[0067] In the squid fishing method near the seabed such as daytime squid fishing, there may be a case where the setting of the water depth at which the fishing machine operates is mistaken. This is due to a setting operation error or a setting error during automatic water depth setting linked with a fish finder. In such a case, as shown in FIG. 12-2, the sinkers WT and the squid hooks ND of all the squid fishing machines SC land on the seabed ZB and become entangled, and it will take a considerable amount of time for restoration. Then, the rotation of drums A·B will decelerate almost simultaneously. The same applies to drums C·D and drums E·F.

[0068] Therefore, as described above, when the two front rollers MR, MR decelerate simultaneously without any change in the detection result of the current sensor that detects the motor operating state of the drive-side rotating body, it can be determined that the rig ND has reached the seabed ZB. Also, when it is necessary to move the front roller MR when stopping the squid jigging machine SC based on the information from the current sensor, the emergency stop can be not activated and the operation can be carried out smoothly.

[0069] Conversely, when a problem occurs such that the driven-side rotating body is operating while the drive-side rotating body is not operating, it can also be detected and determined by using the current sensor (drive-side operation detection means). And in that case as well, the configuration can be such that the emergency stop means is not activated. The effects described above can also be obtained outside the squid jigging system.

Industrial Applicability

[0070] According to the rotation detection device, rotation detection system, and squid jigging system of the present invention, entanglement of the tag line in the sea during squid fishing operations using a squid jigging machine can be detected early, the time and labor for restoring the squid hook can be reduced, and safe operations can be carried out for the crew. Also, the present invention is not limited to the early detection technology of troubles when using a squid jigging machine, and is useful in all devices and systems that are useful for directly detecting the rotation of the driven-side rotating body, and in all industrial fields related thereto, and is an invention with high industrial applicability. In particular, the rotation detection system of the present invention etc. greatly exhibits its usefulness in all environments and situations where it is unsuitable to use cables to attach each sensor.

Explanation of Signs

[0071] 2, 12, 22, 32, 42... base 3A, 3B, 13A, 13B, 23A, 23B, 33A, 33B, 43A, 43B... acceleration sensor 4, 14, 24, 34, 44... signal processing unit 10, 110, 210, 310, 410, 610, 710… Rotation detection device 15, 45… Mounting holes 20, 220, 320, 420, 620, 720… Receiver 226… Receiver-side arithmetic processing unit 68, 78… Driving-side operation detection means (current sensor) 300, 2300, 3300, 4300, 5300, 6300, 7300… Rotation detection system 370, 470, 770… Setting instruction device 7500… Squid fishing system AC… Driving unit BD… Tags Bw… Reverse rotation direction CJ… Connecting means CP… Control panel DM… Drum of squid fishing machine ES… Emergency stop means Fw… Forward rotation direction HK… Hook MR… Driven-side rotating body (front roller) MT… Motor ND… Squid hook (setup) Q… Driving-side rotating body q… Rotation of driving-side rotating body Q R, R1, R2… Driven-side rotating bodies r, r1, r2… Rotation of driven-side rotating body R SC… Squid fishing machine WL… Wireless communication means (such as Bluetooth (registered trademark)) WT… Weight (plumb bob) X… Rotation axis of driven-side rotating body R ZB… Seabed

Claims

1. A rotation detection device for detecting the rotation of a driven rotating body that rotates due to the rotation of a driving rotating body, comprising: a base body having a specification for attachment to the driven rotating body; a pair of acceleration sensors provided on the base body; a signal processing unit that wirelessly transmits information related to the rotation of the driven rotating body obtained by the acceleration sensor to the outside; By using this device, detection rotation speed information in each acceleration sensor and rotation direction information by comparison of detection signals can be obtained. A rotation detection device, characterized in that.

2. The rotation detection device according to claim 1, characterized in that it is attached to each of a plurality of driven rotating bodies and is used for monitoring the rotation state between the driven rotating bodies.

3. The rotation detection device according to any one of claims 1 and 2, characterized in that it is for detecting the rotation of a front roller constituting a squid fishing machine.

4. The rotation detection device according to any one of claims 1, 2, and 3, characterized in that the base body has a form in which the ratio of its major axis to minor axis exceeds 1.

5. The rotation detection device according to any one of claims 1, 2, 3, and 4, characterized in that the signal processing unit includes an arithmetic processing unit that performs a predetermined arithmetic process on the detection signal obtained by the acceleration sensor to generate the detection rotation speed information and the rotation direction information.

6. The rotation detection device according to any one of claims 1, 2, 3, and 4, characterized in that the signal processing unit transmits the detection signal obtained by the acceleration sensor to the outside, and the detection rotation speed information and the rotation direction information are generated outside this device.

7. A rotation detection system comprising the rotation detection device according to any one of claims 1, 2, 3, 4, and 5 attached to each of one or a plurality of driven rotating bodies that rotate due to the rotation of a driving rotating body, and a receiving device that receives information transmitted from the signal processing unit of the rotation detection device, and is used for monitoring the rotation state between each driven rotating body or each driven rotating body based on the detection rotation speed information and the rotation direction information.

8. A rotation detection system comprising a rotation detection device according to claim 6 attached to each of one or more driven-side rotators, and a receiving device that receives information transmitted from a signal processing unit of the rotation detection device, the receiving device comprising a receiving-side arithmetic processing unit that generates detection rotation speed information and rotation direction information based on the received detection signal, and being used for monitoring the rotation states between each of the driven-side rotators or each of the driven rotators based on the detection rotation speed information and the rotation direction information.

9. The rotation detection system according to any one of claims 7 and 8, further comprising a setting command device that transmits, by a wireless method, information for setting communication connection in the receiving device and other settings to the receiving device.

10. The rotation detection system according to any one of claims 7, 8, and 9, further comprising an emergency stop means for emergently stopping the rotation of the driving-side rotator in a predetermined state based on the monitoring of the rotation states between each of the driven-side rotators or each of the driven rotators.

11. The rotation detection system according to any one of claims 7, 8, 9, and 10, further comprising a driving-side operation detection means for detecting the operation of the driving-side rotator.

12. The rotation detection system according to claim 11, wherein the driving-side rotator is driven by a motor, and the driving-side operation detection means is a current sensor that detects a current related to the driving of the motor.

13. The rotation detection system according to any one of claims 11 and 12, wherein detection information by the driving-side operation detection means is transmitted to the receiving device.

14. The rotation detection system according to any one of claims 11, 12, and 13, further comprising an emergency stop means for emergently stopping the rotation of the driving-side rotator in a predetermined state based on the monitoring of the rotation states between each of the driven-side rotators or each of the driven rotators, and being configured such that the emergency stop means is not activated when detection by the driving-side operation detection means is not performed.

15. The rotation detection system according to any one of claims 7, 8, 9, 10, 11, 12, 13, and 14, being for detecting the rotation of a front roller constituting a squid fishing machine.

16. A squid fishing system comprising the rotation detection system according to any one of claims 7, 8, 9, 10, 11, 12, 13, 14, and 15.

17. The squid fishing system according to claim 16, characterized in that information received by the receiving device is used for motor drive control.

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