CN115005170A

CN115005170A - Electromagnetic brake device for fishing reel and fishing line

Info

Publication number: CN115005170A
Application number: CN202210893706.XA
Authority: CN
Inventors: 施兆洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-10
Filing date: 2022-07-27
Publication date: 2022-09-06
Also published as: CN116439207A

Abstract

The present invention relates to a fishing reel and a fishing line, and more particularly, to an electromagnetic brake device for a fishing reel and a fishing line that reel and release a fishing line in a manner that a spool rotates. The electromagnetic braking device for the fishing reel comprises: the device comprises a brake mechanism with a brake coil and a magnetic brake piece, a guide ring speed measuring mechanism, a rotation detection mechanism and a controller. The fishing line reel braking force is controlled by detecting the line outgoing speed of the fishing line reel and the tangential speed of the fishing line released by the rotation of the winding reel in real time and comparing the difference between the line outgoing speed and the tangential speed, so that closed-loop control is realized, and the stability of the braking effect is improved. The electromagnetic braking device of the fishing line reel can automatically correct the braking force, reduce the complexity of parameter setting and automatically set and store parameters. In addition, this application still provides the fishing line that tests the speed that is used for realizing above-mentioned function.

Description

Electromagnetic brake device of fishing reel and fishing line

Technical Field

The present invention relates to a fishing reel and a fishing line, and more particularly, to an electromagnetic brake device for a fishing reel and a fishing line that reel and release a fishing line in a manner that a spool rotates.

Background

When the speed of releasing the fishing line by the inertial rotation of the winding drum is higher than the speed of pulling the fishing line out of the fishing line outlet of the fishing line reel, part of the fishing line is retained in the fishing line reel to form floating lines, and further the fishing line is tangled and broken. Therefore, the reel is provided with a device for braking and decelerating the spool to prevent the fishing line from being tangled when baiting is thrown. In a conventional electromagnetic braking device for a reel, when a spool rotates to reel a line, a magnetic rotor (or rotor coil) that rotates integrally with the spool rotates relative to a stator coil (or magnetic stator) provided in a reel unit. The winding reel is braked and decelerated by controlling an induced current in a stator coil (or a rotor coil) by a preset parameter and program (see patent documents 1 and 2).

Patent document 1: grant publication No. CN 1965645B.

Patent document 2: application publication No. CN 110432236A.

Because wind power, bait, fishing line and the like are frequently changed in the actual fishing scene, the attenuation rule of the line-outgoing speed of the fishing line drawn out of the fishing line reel in the bait throwing process is uncertain due to the interference of complex factors, the existing electromagnetic braking device of the fishing line reel cannot dynamically monitor the matching condition between the line-outgoing speed and the speed of the fishing line released by the rotation of the winding reel, the open-loop control is carried out on the braking force of the winding reel only according to preset programs and parameters, the dynamic correction control cannot be carried out on the rotating speed of the winding reel deviating from an appropriate value, and the braking effect is unstable. When the braking force is insufficient, the rotating speed of the reel is too high, the fishing line is tangled and breaks down, and when the braking force is too high, the flying kinetic energy of the bait is additionally consumed, so that the flying distance of the bait is shortened. In addition, the conventional electromagnetic brake device for a fishing reel requires a complicated setting operation in advance when fishing to be adapted to actual wind power, bait, fishing line, and other scenes.

Disclosure of Invention

The present invention has been made in view of the above problems, and an embodiment of the present invention provides an electromagnetic braking device for a fishing reel, which can automatically correct the rotational speed of a spool, and which can correct the rotational speed deviation of the spool in time by detecting the line-out speed of the fishing reel and the tangential speed of the fishing line released by the rotation of the spool, controlling the braking force according to the matching condition between the two speeds, and thus realizing closed-loop control, thereby improving the stability of braking. Furthermore, the embodiment provided by the application also realizes the functions of reducing the complexity of parameter setting and automatically setting and storing the parameters. In addition, a speed measuring fishing line for realizing the functions is also provided.

A first aspect of the present invention provides an electromagnetic braking device for a fishing reel, the fishing reel including a line guide ring and a spool for rotatably winding and unwinding a fishing line, the electromagnetic braking device for a fishing reel including a braking mechanism, the braking mechanism including a braking coil and a magnetic braking member disposed in opposite directions, one of the magnetic braking member and the braking coil and the spool integrally rotate to form a rotor, the other of the magnetic braking member and the braking coil is disposed in the rotor to form a stator, and the magnetic braking member and the braking coil relatively rotate and interact with each other to generate electromagnetic induction to brake the spool when the fishing line is being unwound, the electromagnetic braking device for a fishing reel further including:

the guide ring speed measuring mechanism is a linear velocity sensor arranged on the inner wall of the outgoing line guide ring and is used for detecting the speed information of the fishing line passing through the outgoing line guide ring;

a rotation detection mechanism provided on the reel unit, the rotation detection mechanism including a main rotation speed sensor and a rotation direction detection device for detecting rotation information of the spool, the rotation information including rotation pulse and rotation direction information;

a controller, which is arranged on the fishing line reel body and comprises a processor, a memory, a current control unit and an I/O interface, wherein the controller is electrically connected with the guide ring speed measuring mechanism and the rotation detecting mechanism through the I/O interface, the current control unit is electrically connected with the brake coil, and the memory records and stores conversion relation parameters among the number of winding turns of the fishing line of the winding reel, the rotating speed and the tangential speed;

the controller controls an electromagnetically induced current in the brake coil as follows:

calculating the rotation direction of the winding reel and the number of winding turns of the fishing line according to the rotation information, wherein the number of winding turns is stored in the memory; when the fishing line is discharged, closed-loop control is performed, the loop-passing speed is calculated according to the speed information, the rotating speed of the winding reel is calculated according to the rotation information, the tangential speed is calculated according to the rotating speed, the winding turns at the time and the conversion relation parameter, a correction signal for correcting the rotating speed of the winding reel is calculated according to the tangential speed and the loop-passing speed at the time, and the electromagnetic induction current in the brake coil is controlled by the current control unit according to the correction signal.

According to the technical scheme, the loop passing speed and the tangential speed are dynamically detected, the braking force of the winding reel is adjusted through closed-loop control, and the rotating speed of the winding reel is corrected, so that the outgoing line speed is matched with the tangential speed.

Optionally, in an embodiment of the first aspect, the guide ring speed measurement mechanism detects the speed information and processes the speed information to the controller, and is implemented in any one of the following manners:

the guide ring speed measuring mechanism further comprises a projection light source and a photoelectric sensor, wherein the projection light source irradiates the fishing line by using the fishing line with the interval of the color segments with different reflectivities and fixed mark lengths, the photoelectric sensor converts the detected reflected light signal into an electric pulse signal, and the controller calculates the ring passing speed according to the electric pulse signal and the fixed mark lengths; or, the guide ring speed measuring mechanism further comprises a projection light source and an image sensor, the projection light source irradiates the fishing line, the image sensor picks up local image information reflected by the moving fishing line according to a fixed time interval, and the controller calculates the ring passing speed according to the moving distance of the local images at the fixed time interval by performing front-back comparison analysis processing on the local images; or, the guide ring speed measuring mechanism is a magnetic sensor, a fishing line with magnetic marks with fixed mark lengths and spaced is used, the magnetic sensor converts a detected magnetic signal into an electric pulse signal, and the controller calculates the ring passing speed according to the electric pulse signal and the fixed mark lengths.

Optionally, in an embodiment of the first aspect, the controller is configured to control an electromagnetically induced current in the brake coil in any one of the following manners:

the current control unit is a switch element, and the correction signal controls the switch-on and switch-off of the switch element in a switching mode; or, the current control unit is a switching element, and the correction signal controls the on-off time length of the switching element to be in proportion in a mode of adjusting the duty ratio of the PWM signal; or, the current control unit is a current intensity adjusting element, and the correction signal adjusts the current intensity in the current intensity adjusting element in a manner of changing intensity.

Optionally, in an embodiment of the first aspect, the closed-loop control is implemented in any one of the following manners:

taking the over-loop speed as an input target control quantity and taking the tangential speed as an output controlled quantity and a feedback quantity; or, the set allowable speed difference threshold value is used as an input target control quantity, and the difference value between the tangential speed and the loop passing speed is used as an output controlled quantity and a feedback quantity; alternatively, the set allowable float length threshold is used as an input target control amount, and the float length is used as an output controlled amount and a feedback amount.

Optionally, in an embodiment of the first aspect, information detected by the rotation direction detecting device is processed by the controller, and the processing is implemented in any one of the following manners:

the rotation direction detecting device is an auxiliary rotation speed sensor provided on the reel unit, and the controller calculates the rotation direction of the spool based on a phase difference between rotation pulse signals generated by the auxiliary rotation speed sensor and the main rotation speed sensor; alternatively, the rotation direction detecting device is a state detecting element provided in the reel unit, the state detecting element detects a state of the reel, and the controller determines the rotation direction of the spool based on a signal generated by the state detecting element.

Preferably, in the first aspect of the present invention, the memory stores in advance a conversion relation parameter corresponding to each of a plurality of types of fishing lines of different thickness specifications, and the conversion relation parameter is selectively set in any one of the following manners:

the fishing reel body is provided with a selection button electrically connected with the controller, and matched conversion relation parameters are selected and set through the selection button; or the controller is additionally provided with a wireless communication module, and the matched conversion relation parameters are selected and set through an external setting terminal connected through wireless communication.

According to the technical scheme, the conversion relation parameters corresponding to the fishing lines with various thickness specifications are stored in advance, and the selection setting is carried out during fishing, so that the complexity of the setting operation is reduced as the thickness factor of the fishing line is only required to be considered for the same winding reel.

Preferably, in the embodiment of the first aspect, the controller calculates and stores the conversion relation parameter in any one of the following manners:

calculating sample data of one or more ring passing speeds, winding turns and rotating speeds when the fishing line is wound on the winding reel to form a data sample group, calculating the conversion relation parameter according to the sample data, and recording and storing the conversion relation parameter; or calculating the conversion ratio between the ring passing speed and the rotating speed corresponding to different winding turns when the winding reel winds the fishing line, making a conversion relation table by the series of the winding turns and the corresponding conversion ratio, recording and storing the conversion relation table, inquiring the matched conversion ratio in the conversion relation table according to the winding turns when the fishing line is discharged, and calculating the tangential speed according to the rotating speed of the winding reel and the conversion ratio.

According to the technical scheme, the conversion relation parameters are automatically calculated and stored when the fishing line is reeled by the winding reel, so that the complicated setting operation is avoided when fishing.

Preferably, in the embodiment of the first aspect, the controller determines whether to perform the processing step of calculating and storing the conversion relation parameter when winding the fishing line, in any one of the following manners:

the processing step is executed when the winding reel winds the fishing line each time; or, the fishing line reel body is provided with a setting button electrically connected with the controller, and whether the processing step is executed or not is controlled by the setting button; or the controller is provided with a wireless communication module which is in wireless communication connection with an external operation terminal, and whether the processing step is executed or not is controlled through the external operation terminal; or, when it is detected that the number-of-turns-winding count value of the fishing line on the winding reel is lower than the number-of-turns threshold value or the conversion relation parameter is not stored in the memory, the processing step is executed.

In a second aspect of the present application embodiments there is provided a fishing line having a signal mark interval of fixed mark length, the signal mark being detectable by the guide ring speed measurement mechanism of a reel including the guide ring speed measurement mechanism and being convertible to an electrical pulse signal, the electrical pulse signal and the fixed mark length being used to calculate the ring speed.

Optionally, in an embodiment of the second aspect, the signal mark interval is formed by intervals of color segments with different light reflection rates, and the signal mark can be detected by the guide ring velocimetry mechanism including a projection light source and a photoelectric sensor and converted into the electric pulse signal.

Optionally, in a second embodiment of the invention, the fishing line has magnetic material attached thereto, the signal mark interval is formed by a recorded series of magnetic signals, which can be detected by the guide ring tachometer mechanism comprising a magneto sensor and converted into the electrical pulse signal.

An embodiment of the third aspect of the present application provides a fishing line having a magnetic material attached thereto for recording a magnetic signal as in the embodiment of the second aspect of the present application.

Drawings

Fig. 1 is an external perspective view of a reel according to an embodiment of the present application.

Fig. 2 is an exploded perspective view of the reel brake mechanism according to the embodiment.

Fig. 3 is a schematic view of the system of the electromagnetic braking device of the fishing reel according to an embodiment.

Fig. 4 is a schematic cross-sectional view of a guide ring speed measurement mechanism according to an embodiment.

Fig. 5 is a detailed structural diagram of a guide ring speed measurement mechanism of some embodiments.

FIG. 6 is a schematic diagram of a left side plate of the winding reel and the rotation speed reflective mark according to an embodiment.

FIG. 7 is a schematic view of another mode of detecting the take-up/pay-off state in the rotation detecting mechanism.

FIG. 8 is a flow diagram of controller processing steps according to one embodiment.

FIG. 9 is a block diagram of closed loop control according to an embodiment.

Fig. 10 is a closed loop control block diagram of some embodiments.

FIG. 11 is a block diagram of closed loop control of further embodiments.

FIG. 12 is a record diagram of a conversion table in some embodiments.

Fig. 13 is a fishing line diagram.

Fig. 14 is another fishing line view.

Fig. 15 is a flow diagram of controller processing steps of some embodiments.

Description of reference numerals:

100 parts of a fishing reel body, 200 parts of a winding reel, 300 parts of a clutch switch, 400 parts of a wire outlet guide ring and 500 parts of a wire take-up handle;

600, a guide ring speed measuring mechanism, 700, a rotation detecting mechanism, 800, a braking mechanism and 900, a controller;

201: a left side plate of a winding reel, 202: a winding reel shaft, 601: a projection light source, 602: a light receiving part, 603: a first lens, 604: a second lens, 701: a rotating speed reflecting mark, 702: a permanent magnet, 703: a state detection element, 801: a brake coil, 802: a magnetic brake, 803: a connecting part, 901: a processor, 902: an I/O interface, 903: a current control unit, 904: a RAM memory, 905: a ROM memory, 906: a FLASH memory (FLASH ROM);

911, a closed loop control calculation module, 912, an over-loop speed calculation module, 913, a tangential speed calculation module, 914, a delta V calculation module and 915, an Lf calculation module.

Detailed Description

The following further description of the embodiments of the present application is provided for illustration and is not intended to limit the scope of the present application for those skilled in the art to practice the embodiments of the present application. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Neither is it described in this specification as essential to the actual implementation, but nothing relevant to understanding the present application, such as power supply, compiled instructions, specific operation of the processor, specific algorithms for closed loop control, etc., is described. These are well known techniques that would be known to one skilled in the art from this disclosure and which could be used in a variety of ways to practice the present application.

In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the specification. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments" unless specifically stated otherwise.

In addition, in the description of the embodiments herein, "plurality" means two or more, and the terms "including", "comprising", "having" and variations thereof mean "including but not limited to", unless otherwise specifically noted.

The bail of the present invention is specifically a reel outlet member through which the output fishing line is drawn out to the outside of the reel, and is classified into, for example, a "wire guide" or a "wire guide" of a conventional dual-bearing reel.

The loop passing speed V according to the present application specifically refers to a speed at which a fishing line passes through the bail 400 when the fishing line is stored, or equivalently, refers to a length of the fishing line passing through the bail 400 for a certain period of investigation T; the tangential velocity Vt referred to in the present application specifically means the speed at which the fishing line is wound or released when the spool 200 is rotated, or equivalently means the length of the fishing line wound or released by the rotation of the spool 200 for a certain period of time under consideration; the rotation speed Vr referred to in the present application refers in particular to the rotation speed of the reel 200, or equivalently to the number of rotations of the reel 200 for a certain considered time period T; the examination period T may be a fixed absolute time length, such as 1 second, or may be a relative reference period, such as a period T defined by a rotation of the spool 200 by a certain angle.

The controller according to the present application is a circuit device including a circuit board and an electronic component, and software stored in the circuit device; the current control unit in the present application specifically refers to an element or a combination of elements that controls on/off switching of current or changes in current intensity by an input signal; the electrical connection referred to in the present application specifically means: a circuit connection, or a connection mode for transmitting electric signals or electric energy through a wireless connection.

As shown in fig. 1 and 2, the fishing reel according to the embodiment of the present invention is used. The fishing reel includes: the fishing reel comprises a fishing reel body 100, a winding reel 200, a clutch switch 300, a wire outlet guide ring 400 and a wire take-up handle 500, wherein a gear transmission mechanism and a clutch mechanism are additionally arranged in the fishing reel; when the fishing line is reeled, the clutch mechanism is engaged, and the reeling handle 500 drives the winding reel 200 to rotate through the gear transmission mechanism; when the clutch switch 300 is pressed, the clutch mechanism is disengaged, the winding reel 200 is separated from the transmission mechanism, and the winding reel 200 can freely rotate at the moment and is in a paying-off state; the spool 200 has left and right side plates on both sides thereof, the spool 200 and the spool shaft 202 are fixed to be integrally linked (see fig. 2), and the reel unit 100 has left and right side covers on both sides thereof. The foregoing are some of the typical forms of prior art reels, and reels of such construction are also commonly referred to as dual-bearing reels.

The embodiment of the present application relates to a brake mechanism of an electromagnetic brake device for a fishing reel, and the braking of the rotation mechanism by using electromagnetic induction is a known technology, and the brake mechanism is specifically applied to the following applications: chinese patent application publication nos. CN110432236A and CN1806540A disclose related spool brake components, and further, for example, brake energy recovery systems of some automobiles. To facilitate understanding of the embodiments of the present application, a brake mechanism known in the art will be described.

As shown in fig. 2, the brake mechanism 800 includes a brake coil 801 and a magnetic brake member 802, and the brake mechanism 800 brakes the spool 200 by electromagnetic induction during the fishing line is paid out; the magnetic braking member 802 is a magnetic rotor that rotates integrally with the spool 200, the braking coil 801 is a stator coil provided on the reel unit 100, and the braking coil 801 is disposed opposite to the magnetic braking member 802 so that the braking coil 801 generates an induced current by the rotation of the magnetic braking member 802.

More specifically, as shown in fig. 2, a magnetic brake 802 is a combination of 4 permanent magnets, and the magnetic brake 802 is mounted on the spool shaft 202 via a connecting member 803 so as to be rotatable integrally with the spool shaft 202; a spool shaft 202 attached to the spool 200 so as to be rotatable integrally with the spool 200; the magnetic poles of the magnetic brake member 802 are arranged in a rotationally symmetrical manner around the axis of the spool shaft 202; correspondingly, the brake coil 801 is formed by combining 4 single coils in series, and the brake coil 801 is fixedly arranged on the reel unit 100 through a circuit board of the controller 900; the brake coil 801 is disposed on the outer peripheral side of the magnetic brake member 802 so as to face the magnetic brake member 802 and is disposed concentrically with the axis of the spool shaft 202.

It is understood that in some examples, the braking coil 801 may be configured as a rotor and the magnetic brake 802 may be configured as a stator, without limitation; in some examples, the rotor may also be disposed on the side surface of the winding reel 200 or at other positions, and correspondingly, the stator is disposed at a relative position of the rotor to form a power generation device, which is not limited herein; in some examples, the number of the permanent magnets used for the magnetic braking member 802 and the number of the single coils used for the braking coil 801 may be one or more, which is not limited; in some examples, the braking coil 801 may also be a parallel combination or a hybrid combination of series and parallel combinations of a plurality of single coils, which is not limited in this respect.

The embodiment of the present application is different from the prior art in that the manner of controlling the current in the brake coil 801 described above is improved.

It will be understood that the illustrated construction of the embodiments of the present application does not constitute a specific limitation on the reel or its braking device, which in some embodiments of the present application may include more or fewer components than those shown, or some components may be combined, some components may be separated, or a different arrangement of components may be used.

[ EXAMPLES one ]

As shown in fig. 3, the electromagnetic braking device for a fishing reel according to an embodiment of the present invention includes, in addition to the braking mechanism 800, the following: the guide ring speed measuring mechanism 600, the rotation detecting mechanism 700 and the controller 900 are described in detail as follows.

Guide ring speed measuring mechanism 600

In the present embodiment, the guide ring speed measuring mechanism 600 is a linear velocity sensor, which is mounted to the inner wall of the outlet guide ring 400 in an embedded manner, as shown in fig. 4, to detect speed information of the fishing line in the guide ring and transmit the detected speed information of the fishing line to the controller 900.

It can be understood that the linear velocity sensor is a known technology, and for example, a commonly used grating sensor, a magnetic grating sensor, an aberration tachometer sensor, and the like can detect linear velocity or displacement.

The line speed sensor is mounted on the inner wall of the outlet guide ring 400 in an embedded manner, so that the fishing line can smoothly pass through the outlet guide ring 400, and the guide ring speed measuring mechanism 600 may be mounted on the inner wall of the outlet guide ring 400 in a non-embedded manner, so that the speed information of the fishing line can be detected, which is not limited.

Specifically, in the present embodiment, the guide ring speed measurement mechanism 600 further includes a projection light source 601 and a light receiving portion 602; the projection light source 601 is configured to emit light to the fishing line moving in the line guide ring 400, and the light receiving unit 602 is configured to receive a reflected light signal of the fishing line. In some of these embodiments, the projection light source 601 and the light receiving portion 602 may be separately provided or integrated. More specifically, as shown in fig. 5, the projection light source 601, the light receiving portion 602, and the optical element are combined, the light emitted from the projection light source 601 passes through the first lens 603, and irradiates the fishing line, and the reflected light of the fishing line passes through the second lens 604 and reaches the light receiving portion 602. These similar optical combining methods are well known in the art and are not intended to be limiting.

In the present embodiment, the light receiving unit 602 is a photosensor, and uses a fishing line having a fixed mark length L and having color segment intervals of different reflectances, and can convert the detected reflected light signal into an electric pulse signal for calculating the loop speed V of the fishing line.

The fishing line used in this embodiment is shown in fig. 13, in some of which the fixed mark length L is less than 0.85 meter; in some of these embodiments, the fixed mark length L is less than 0.3 meters; in some of these embodiments, the fixed mark length L is less than 0.1 meters; in some of these embodiments, the fixed mark length L is less than 0.05 meters. It should be noted that the value of the fixed mark length L may be adaptively set according to different application scenarios, and the lower the value of the fixed mark length L, the higher the detection accuracy, which is not limited herein.

It should be noted that detecting displacement or velocity using reflected light from signal markers is a well-known technique, and widely used grating scales, grating positioning mice, etc. are all specific applications.

Rotation detecting mechanism 700

In the present embodiment, the rotation detecting mechanism 700 includes a rotation speed sensor and a rotation direction detecting device to detect the rotation information of the spool 200, which includes the information of the rotation pulse and the rotation direction; the rotation detection mechanism 700 is provided in the reel unit 100, and transmits detected rotation information to the controller 900.

Specifically, the rotation detecting mechanism 700 includes: a main rotation speed sensor for detecting a rotation speed, and an auxiliary rotation speed sensor as a rotation direction detecting means. The main rotation speed sensor and the auxiliary rotation speed sensor are both reflective photoelectric rotation speed sensors, and are fixedly disposed on the reel unit 100 via a circuit board of the controller 900, the detection directions of the 2 rotation speed sensors are directed to the left side plate 201 of the spool, and the 2 rotation speed sensors form a certain central angle with the rotation center of the spool 200 as the center of the circle. As shown in fig. 6, N rotation speed reflecting marks 701 are provided on the outer side of the spool left side plate 201 at positions corresponding to the detection directions of the reflection type photoelectric rotation speed sensors. When the spool 200 rotates, the rotation speed sensor emits light and detects a reflected light signal of the rotation speed reflective mark 701 to generate a rotation pulse signal, and a phase difference between the rotation pulse signals respectively generated by the auxiliary rotation speed sensor and the main rotation speed sensor is used for calculating the rotation direction of the spool 200.

The number N =3 of the rotation speed reflective marks, in some embodiments, the number N of the rotation speed reflective marks may also be another natural number greater than 0, which is not limited; in some embodiments, the number of the auxiliary speed sensors and the number of the main speed sensors may be multiple, which is not limited to this.

It should be noted that the detection of the rotation speed, the rotation count and the rotation direction by the sensor is a known technology, and in some embodiments, the reflection-type photoelectric rotation speed sensor may be provided at a position on the reel unit 100 where the rotation information of the spool 200 can be detected, using other known elements such as a photoelectric detection device, a hall sensor, a proximity switch, a contact switch, and the like, to achieve the same function.

(III) controller 900

In the present embodiment, the circuit board of the controller 900 is disposed inside the left cover of the reel, and as shown in fig. 3, the controller 900 specifically includes: a processor 901, a memory, an I/O interface 902, a current control unit 903. Wherein, the memory comprises a RAM memory 904, a ROM memory 905, and a FLASH memory (FLASH ROM) 906; the controller 900 is electrically connected to the guide ring speed measurement mechanism 600 and the rotation detection mechanism 700 through the I/O interface 902, and the current control unit 903 is electrically connected to the brake coil 801.

In some embodiments, the controller 900 may be disposed at other suitable positions in the main body of the fishing reel 1, which is not limited thereto; in some embodiments, the RAM memory 904, ROM memory 905, and FLASH memory (FLASH ROM) 906 may be replaced by other well-known memory devices with similar functions, such as: the ROM is replaced with a FLASH ROM and the DRAM is replaced with an SRAM, which is not limited.

The controller 900 is provided with a loop speed calculation module 912, and the loop speed calculation module 912 calculates the loop speed V based on the electric pulse signal of the guide ring speed measurement mechanism 600 and the fixed mark length L of the fishing line used during the fishing line releasing process. In some embodiments, the over-loop speed V may also be calculated during reel-up.

The controller 900 processes the rotation information from the rotation detecting mechanism 700 as follows:

calculating the rotation direction of the spool 200 based on the phase difference between the two rotation pulse signals respectively generated by the auxiliary rotation speed sensor and the main rotation speed sensor of the rotation detecting means 700; calculating the rotation speed Vr of the winding reel 200 according to the electric pulse signal of the main rotation speed sensor when the fishing line is reeled out; the number of winding turns Nr of the fishing line on the spool 200 is counted cumulatively from one of the two rotation pulse signals, and the number of winding turns Nr is recorded in a FLASH memory (FLASH ROM) 906, specifically, when the fishing line is wound, the number of winding turns recorded is increased by 1/N turns, Nr = Nr +1/N, according to each electric pulse signal, and when the fishing line is discharged, the number of winding turns recorded is decreased by 1/N turns, Nr = Nr-1/N, according to each electric pulse signal. Where N is the number of the rotation speed reflecting marks 701 in the rotation detecting mechanism 700.

In some embodiments, the rotation speed Vr of the spool 200 may also be calculated during the reeling of the fishing line.

The rotation speed Vr is used to calculate the tangential speed Vt, and the thickness d of the wound fishing line changes due to the change in the number of turns Nr of the fishing line wound on the spool 200 when the fishing line is stored. Therefore, since calculating the tangential velocity Vt from the rotation speed Vr requires correction in consideration of the change in the thickness d of the wound fishing line, there is a conversion relationship between the tangential velocity Vt, the number of windings Nr, and the rotation speed Vr. The controller 900 records and stores conversion relation parameters corresponding to the number Nr of winding turns, the rotation speed Vr, and the tangential speed Vt of the reel 200 in a FLASH memory (FLASH ROM) 906.

The conversion relation parameter is specifically parameter data information for calculating the corresponding tangential speed Vt according to the number of winding turns Nr and the rotation speed Vr, and is related to the geometric size of the spool 200 and the thickness of the fishing line used according to well-known mathematical and physical knowledge. Therefore, the conversion relation parameter can be set and stored in advance, and can be in the form of expression such as parameter value, regression model, value table or their combination, and the like, without limitation.

A specific example is: the original diameter of the spool 200 is denoted as "D", a constant conversion coefficient K is defined between the thickness D of the fishing line wound on the spool 200 and the number of winding turns Nr, that is, D = K × Nr, and the relationship between the tangential velocity Vt, the number of winding turns Nr, and the rotation speed Vr is denoted as "formula 1", that is: vt = pi (D + K Nr 2) Vr, and the diameter D and the coefficient K are conversion parameters.

The controller 900 is provided with a tangential velocity calculating module 913, and calculates the tangential velocity Vt from the number Nr of windings of the spool 200, the rotation speed Vr, and the conversion relation parameter stored in the memory when the fishing line is paid out. A specific example is: tangential velocity Vt = pi (D + K × Nr × 2) Vr.

The current control unit 903 is a switching element, and the correction signal controls on and off of the switching element in an on-off switching manner, where the switching element specifically refers to an element or an element combination that controls on and off of current by an input signal, such as an element or an element combination of a Field Effect Transistor (FET), a switching transistor, a thyristor, and the like, and is not limited thereto.

The correction signal is specifically a signal for controlling the electromagnetic induction current of the brake coil 801 calculated by the following closed-loop control.

(IV) closed-loop control

Closed-loop control as shown in fig. 9, the controller 900 is provided with a closed-loop control calculation module 911, which calculates a correction signal for correcting the rotation speed of the spool by using the over-loop speed V calculated by the over-loop speed calculation module 912 as a dynamic input target control amount, using the tangential speed Vt calculated by the tangential speed calculation module 913 as an output controlled amount, and using the linear speed Vt as a feedback amount; the correction signal controls the current in the brake coil 801 via the current control unit 903, thereby controlling the braking force on the spool 200, and further correcting the rotation speed of the spool 200, so as to control the tangential velocity Vt to be consistent with the over-loop velocity V in a closed-loop manner.

A simple closed-loop control mode is exemplified, when the tangential velocity Vt is greater than the over-loop velocity V, a correction signal is output to turn on the current control unit 903, and the brake coil 801 generates a braking force to the spool 200 to decelerate the spool; when the tangential velocity Vt is less than or equal to the over-loop velocity V, the correction signal is output to turn off the current control unit 903, and the brake coil 801 cancels the braking force to the spool 200 to stop the deceleration, thereby realizing the closed-loop control.

Closed loop control is well known in the art and in some embodiments, other different closed loop control algorithms or combinations of closed loop control algorithms may be used by those skilled in the art, such as: any one or a combination of plural kinds of algorithms such as binary control, proportional control, integral control, derivative control, PID control, etc., without limitation.

Because this embodiment crosses the matching situation of ring speed and tangential speed through dynamic detection, the automatic correction winding reel rotational speed deviation realizes closed-loop control to the stability of fishing line reel braking has been promoted.

(V) flow chart

As shown in fig. 8, the controller 900 of the present embodiment processes as follows:

first, when the operation is started, the winding reel 200 is rotated, and step S11 is executed to calculate the rotation direction of the winding reel 200;

then, step S12 is executed to determine the rotation direction of the spool 200;

if the winding reel 200 is in the take-up direction, the process proceeds to step S17, and the number of winding turns Nr is counted up;

if the rotation direction of the winding reel 200 is the paying-off direction, the steps S13a, S13b and S13c are executed in parallel, and the ring speed V, the rotation speed Vr and the number of winding turns Nr are calculated to be counted down;

then, the process goes to step S14, and the tangential speed Vt is calculated according to the number of winding turns Nr, the rotating speed Vr and the conversion relation parameter;

then, step S15 is carried out, the tangential velocity Vt is compared with the loop passing velocity V, and a correction signal is calculated;

then, the process proceeds to step S16, where the current in the brake coil 801 is controlled according to the correction signal;

when the execution of step S17 or step S16 is completed, the process proceeds to step S18, and it is determined whether the spool 200 stops rotating;

if the spool 200 does not stop rotating, the process re-enters step S11 to start the next control cycle; otherwise, if the spool 200 stops rotating, the process is finished.

[ other embodiments ]

On the basis of the first embodiment, the following embodiments are further provided by carrying out substitution, conversion or improvement.

In some embodiments, the speed information detected by the guide ring speed measurement mechanism 600 is processed by the controller 900, and implemented in any one of the following alternative ways:

alternatively, the guide ring speed measuring mechanism 600 is embodied as an aberration speed measuring sensor, and further includes a projection light source 601 and a light receiving part 602, and the light receiving part 602 is embodied as an image sensor, and the image sensor picks up partial image information reflected by the fishing line at regular time intervals when the fishing line moves under the control of the controller 900; accordingly, the ring-passing speed calculation module 912 processes the image information of the guide ring speed measurement mechanism 600, performs forward and backward comparison analysis on the local images of the fishing line picked up and moved at regular time intervals, and calculates the ring-passing speed V according to the distance of the local images moved at the set time intervals. Thus, the speed measurement can be carried out by using a common fishing line.

It should be noted that the use of image information to detect displacement or velocity is a well-known technique, and such as the widely used laser mouse and the aberration tacho sensor of TRANS-TEK, usa are all applications of this well-known technique.

Alternatively, the guide ring speed measuring mechanism 600 is a magnetic sensor, and magnetic signals with a fixed mark length L are used to mark the spaced fishing lines, and the guide ring speed measuring mechanism 600 converts the detected magnetic signals into electric pulse signals; accordingly, the loop-passing speed calculating module 912 calculates the loop-passing speed V according to the electric pulse signal of the guide loop speed measuring mechanism 600 and the fixed mark length L of the magnetic mark fishing line used.

It should be noted that the use of magnetic signal marks to detect displacement or velocity is a well known technique, and widely used magnetic grid sensors and magnetic grid scales are one application.

As shown in fig. 14, the magnetic signal labels are specifically: a magnetic material is attached to the fishing line, and a series of magnetic signals are recorded at intervals of a fixed mark length L, and the magnetic pole arrangement is as shown in fig. 14. In some of these embodiments, the magnetic sensor may be a known hall sensor or similar functioning device; in some of these embodiments, the fixed mark length L is less than 0.85 meters; in some of these embodiments, the fixed mark length L is less than 0.3 meters; in some of these embodiments, the fixed mark length L is less than 0.1 meters; in some of these embodiments, the fixed mark length L is less than 0.05 meters. It should be noted that the value of the fixed mark length L may be adaptively set according to different application scenarios, and the lower the value of the fixed mark length L, the higher the detection accuracy, which is not limited herein.

The manufacturing method of attaching the magnetic material to the fishing line is a well-known technique, for example, a magnetic tape for recording data and audio/video information is made by attaching the magnetic material to a flexible base material, and such a method can also be used for attaching the magnetic material to the fishing line; for example, the magnetic material can be attached to a fishing line by mixing the magnetic material powder with a liquid binder and coating or impregnating the fishing line or a raw line of a fishing line.

(II) in some embodiments, the controller controls the electromagnetic induction current of the brake coil 801 to be replaced by any one of the following modes:

alternatively, the current control unit 903 is embodied as a switching element that switches on and off an electromagnetic induction current in the brake coil 801, and the correction signal controls the on and off time duration ratio of the switching element in such a manner that the duty ratio of a PWM (pulse width modulation) signal is adjusted.

Alternatively, the current control unit 903 is a current intensity adjusting element, and the correction signal adjusts the current intensity in the current intensity adjusting element in a manner of changing the intensity.

The current intensity adjusting element is specifically an element or an element combination that controls the change of the current intensity by an input signal, such as an element or a combination of elements that work in a variable resistance region, such as a field effect transistor, a triode, or the like, or a circuit combination that realizes a Digital Potentiometer (Digital Potentiometer) function, which is not limited in this regard.

(iii) in some embodiments, closed loop control may be replaced by any of the following:

alternatively, as shown in fig. 10, the controller 900 calculates the difference Δ V = Vt-V between the tangential velocity Vt and the over-loop velocity V, and the Δ V calculation module 914 includes a difference Δ V calculation module 914 and a tangential velocity calculation module 913, and the Δ V calculation module 914 uses a predetermined allowable velocity difference threshold Vk as an input target control amount and uses the difference Δ V as an output controlled amount and a feedback amount.

In some embodiments, the allowable speed difference threshold Vk ranges from-0.1 m/s to 1.0 m/s; in other embodiments, the allowable speed difference threshold Vk ranges from-0.05 m/s to 0.5 m/s; in other embodiments, the allowable speed difference threshold Vk ranges from 0 m/s to 0.2 m/s. It should be noted that the value of the allowable speed difference threshold Vk may be adaptively set according to different application scenarios, which is not limited to this.

Alternatively, as shown in fig. 11, the controller 900 is provided with a float length Lf calculation module 915, the Lf calculation module 915 includes an over-loop speed calculation module 912 and a tangential speed calculation module 913, and the integral of the difference Δ V with respect to the line releasing time is calculated to obtain the float length Lf staying in the reel when the fishing line is released; the predetermined allowable float length threshold Lk is used as an input target control amount, the float length Lf is used as an output controlled amount, and the float length Lf is used as a feedback amount.

Wherein, the float length Lf refers to: when the fishing line is paid out, the fishing line is released from the spool 200, but the line guide ring 400 is not pulled out yet, and the length of the fishing line is retained in the reel.

In some embodiments, the allowable float length threshold Lk ranges from 0 to 0.5 m; in other embodiments, the range of the allowable float length threshold value Lk is between 0 and 0.3 meter; in other embodiments, the allowable float length threshold Lk is in the range of 0.005-0.2 m. It should be noted that the value of the allowable float length threshold Lk may be adaptively set according to different application scenarios, which is not limited to this.

The proper floating line length is kept through closed-loop control, the fishing line can be ensured to be in a proper loose state without tangling, and the inertia kinetic energy of the bait can be prevented from being consumed by a braking system, so that the effect of increasing the flying distance of the bait is achieved.

In other alternatives, a derivative variable of the tangential velocity Vt may be used as the controlled variable and the feedback quantity, and a derivative variable of the corresponding over-loop velocity V may be used as the input target controlled quantity; or, the derivative variable of the difference value Δ V is used as a controlled variable and a feedback variable, and a corresponding threshold value is used as an input target controlled variable; alternatively, a derivative variable of the float length Lf is used as the controlled variable and the feedback variable, and a corresponding threshold value is used as the input target controlled variable. The equivalent closed-loop control function is realized in such a way, wherein the derivative variables are obtained by mathematical transformation or operation with other reference variables, and can still express other expression forms of the original physical significance essentially.

Such equivalents will readily suggest themselves to those skilled in the art without departing from the spirit and scope of the present application.

(IV) in some embodiments, the information detected by the rotation direction detection device of the rotation detection mechanism 700 is processed by the controller 900, in the following alternative ways:

as shown in fig. 7, the rotation direction detecting device is a state detecting element 703, which is electrically connected to the controller 900 and detects whether the rotation direction of the spool 200 is the wire winding or unwinding operation state. Specifically, the state detection element 703 is a hall switch element, and is disposed on the reel unit 100 below the clutch switch 300, and a permanent magnet 702 is disposed at a position of the bottom of the button of the clutch switch 300 opposite to the hall switch state detection element 703, so as to detect the operating state of the reel (schematically shown as a reel-out state in the drawing, and shown as a reel-in state by a dotted line); accordingly, the controller 900 determines the rotation direction of the spool 200 based on the signal detected by the state detector 703 of the rotation detecting mechanism 700.

It should be noted that detecting the position or movement of the mechanical member and converting the detected position or movement into an electrical signal is a known technique, and in some embodiments, the same function of detecting the operating state of the reel is realized by using a known contact switch, proximity switch, or other switch element provided on the reel unit 100 to detect the position or movement of the mechanical member for detecting the reel state.

(v) in some embodiments, the controller 900 further processes and stores the conversion relationship parameters as follows:

the conversion relation parameters corresponding to various fishing lines with different thickness specifications are stored in a memory in advance, a selection button is additionally arranged on the fishing reel body 100 and is electrically connected with the controller 900, and the matched conversion relation parameters are selected and set through the selection button during fishing, or the controller 900 is additionally provided with a wireless communication module which is in wireless communication connection with an external setting terminal, and the matched conversion relation parameters are selected and set through the external setting terminal during fishing.

The selection button is a knob with a scale indicating dial, and different circuit parameters or different circuit connection modes are set by rotating to different positions, and the same devices with the same functions are realized by pressing a button and the like, such as a radio station selection knob or button of a radio, a gear selection knob or button of a microwave oven or a washing machine and the like.

The wireless communication can be in modes of WIFI, Bluetooth, NFC and the like. The external setting terminal may be a smart phone, a wireless remote controller, or the like, which is not limited thereto. The common fishing line parameters are stored in advance, and the parameters are selected and matched when in use, so that the complexity of setting the parameters is further simplified.

(sixth) in some embodiments, the controller 900 further automatically calculates and stores the scaling relationship parameters in any one of the following ways:

a processing mode is characterized in that when a winding reel 200 winds a fishing line, a tangential speed Vt is equal to a ring passing speed V, the ring passing speed V is calculated according to speed information of a guide ring speed measuring mechanism 600, a rotating speed Vr is calculated according to rotating information of a rotating detection mechanism 700, sample data of a plurality of ring passing speeds V, winding turns Nr and rotating speeds Vr calculated at different time points are taken to form a data sample group, any two data samples in the data sample group are substituted into an example formula 1, namely = pi (D + K Nr 2) Vr, 1 group of linear equations is obtained, at least 1 group of equations is taken to obtain values of at least 1 pair of diameter D and coefficient K, then statistical processing is carried out to obtain the mean value of the diameter D and the coefficient K, and the mean value is stored in a memory. A plurality of data samples are collected for calculation, and results are subjected to statistical processing to obtain an average value, so that detection errors can be reduced.

In the above embodiment, the diameter D is solved as an unknown parameter, and therefore, the diameter D may be used as the winding number count start position when the reel 200 retains a certain amount of fishing line. For the case of the bare bobbin as the starting position of the winding turn count, since the bare diameter of the bobbin is a definite value, in some embodiments, a simple linear equation can be obtained by replacing the diameter D in the above embodiments with the bare diameter as a constant, so that the coefficient K can be obtained by establishing 1 equation with at least 1 data sample.

Another processing mode is that the mode of automatically calculating and storing the conversion relation parameters is replaced by that when the fishing line is wound, the tangential speed Vt is used as a dependent variable, the number of winding turns Nr and the rotating speed Vr are used as independent variables, a regression equation is established, sample data of a plurality of ring passing speeds V, the number of winding turns Nr and the rotating speed Vr which are measured at different time points are taken to form a data sample group, regression analysis is carried out, and a regression model and the parameters are used as the conversion relation parameters to be stored in a readable and writable memory; when the fishing line is paid out, the tangential velocity calculation module 913 inputs the number of winding turns Nr and the rotation speed Vr into the regression model to calculate the tangential velocity Vt.

Alternatively, the method of automatically calculating and storing the conversion relation parameter may be replaced by calculating a conversion ratio r of the tangential speed Vt to the rotation speed Vr corresponding to different numbers of winding turns Nr when winding the fishing line, specifically, r = Vt/Vr, and as shown in fig. 12, creating a conversion relation table of a series of the numbers of winding turns Nr and the corresponding conversion ratios r, and storing the conversion relation table in the memory; when the fishing line is paid out, the tangential velocity calculation module 913 refers to the corresponding ratio r in the conversion table according to the number of winding turns Nr, and calculates the tangential velocity Vt = r × Vr according to the rotation speed Vr.

And the conversion relation parameters are automatically calculated and stored, so that the effect of accurately controlling the brake can be achieved without presetting operation.

(seventhly) on the basis of the sixth embodiment, in some embodiments, the controller 900 further determines whether to perform the processing step of calculating and storing the conversion relation parameter when the spool winds up the fishing line, in any one of the following manners:

in one mode, the processing steps are automatically executed when the winding reel winds the fishing line every time;

in another judgment mode, the fishing line reel body is provided with a setting button electrically connected with the controller, and whether the processing steps are executed or not is controlled through the setting button; or, the controller 900 is further provided with a wireless communication module in wireless communication connection with an external operation terminal, and whether to execute the above processing steps is controlled by the external operation terminal; when a new fishing line is replaced or the conversion relation parameters need to be refreshed again, the operator sends a signal for re-executing the processing steps to the controller through the setting mode.

In another judging method, the processing step is executed when the number of turns of the fishing line on the winding reel is detected to be lower than the number of turns threshold or the conversion relation parameter is not stored. When the new fishing line or the fishing line needs to be rewound, the winding number count value is lower than the number-of-turns threshold value, and the processing steps are executed. In some embodiments, the threshold value of the number of turns ranges from 0 to 1200 turns, in some embodiments, the threshold value of the number of turns ranges from 0 to 300 turns, in some embodiments, the threshold value of the number of turns ranges from 0 to 50 turns, and in some embodiments, the threshold value of the number of turns ranges from 0 to 10 turns. It should be noted that the value of the turn threshold may be adaptively set according to different application scenarios, which is not limited to this.

As shown in fig. 15, the controller 900 according to some embodiments of the present application further adds the following process to the embodiment flowchart:

after the step S17 is completed, the process proceeds to step S21, and it is determined whether to perform calculation of the conversion relation parameter;

if the calculation of the conversion relation parameter is not executed, the process proceeds to step S18;

if the calculation of the conversion relation parameters is executed, the process goes to the parallel execution of the steps S22a and S22b to calculate the over-loop speed V and the rotating speed Vr;

then, step S23 is carried out, and conversion relation parameters are obtained according to the number of winding turns Nr, the rotating speed Vr and the ring passing speed V;

then step S24 is entered, the conversion relation parameter is stored in the memory;

and then proceeds to step S18.

In addition, in order to realize the embodiment of the present application, the present application also provides a fishing line, and the guide ring speed measurement mechanism 600 used in the embodiment of the present application detects the ring passing speed of the fishing line.

In addition, the application also provides a fishing line which is used for recording the magnetic signals in the embodiment of the application.

Of course, the steps and/or operations in the flowcharts and figures described in this specification are for illustrative purposes only, and many variations of these steps and/or operations may be present in addition to those exemplified above without departing from the spirit of the present application. For example, the steps may be performed in a differing order, or steps may be added, deleted or modified or the executions of the blocks modified.

It is apparent that the present application is not limited to the precise construction set forth above and shown in the drawings, that the above-described embodiments are only a few embodiments of the present application, rather than the entire embodiments, and that the embodiments of the present application include all changes, modifications, substitutions, variations and equivalents coming within the spirit and scope of the appended claims, including but not limited to the following aspects:

(1) the calculation formulas related to the present application are all for the case that the inner side of the side plate of the winding reel 200 is a planar shape, and for the case of non-planar geometric shapes such as the inner side of the side plate of the winding reel 200, such as an inclined or arc shape, the equivalent functional effect can be achieved by only modifying the corresponding calculation formulas according to the known geometric knowledge;

(2) the parameters and variables mentioned in this application are only examples used to explain the concept principles of the present application, and those skilled in the art can equally convert the known mathematical and physical knowledge into other expressions to achieve the same function without departing from the scope of the present application. For example, in the embodiment, the comparison between the tangential velocity Vt and the loop passing velocity V may be equivalently converted into a comparison between the length St of the fishing line released from the spool 200 and the length S of the fishing line passing through the line guide 400 in the same time period.

All descriptions of left, right, front and rear directions in the present application take the fishing reel with the left rocking handle from the perspective of the operator as an example, and the same function can be achieved for the fishing reel with the left rocking handle by merely interchanging "left" and "right" in the description of the embodiments.

It should be understood that the functional blocks, components, steps or schematic blocks disclosed herein may be implemented in hardware, software, firmware, or a combination thereof, and do not necessarily refer to specific hardware or software components that may be physically separated individually. Each functional unit may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module.

In embodiments of the present application, one or more components or steps may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It should be understood that the light source for emitting light or photoelectric conversion in the description of the present application may be a laser or a general light source, and may also be visible light, infrared light, or ultraviolet light, without limitation.

Claims

1. An electromagnetic braking device for a reel, the reel including a line guide ring and a spool for rotatably housing a fishing line, the electromagnetic braking device for a reel including a brake mechanism including a brake coil and a magnetic brake member disposed in opposition to each other, one of the magnetic brake member and the brake coil being integrally rotated with the spool to form a rotor, the other of the magnetic brake member and the brake coil being disposed in a stator of a reel body, the magnetic brake member and the brake coil being rotated relative to each other and interacting with each other to generate electromagnetic induction to brake the spool when the fishing line is released, the electromagnetic braking device for a reel comprising:

calculating the rotation direction of the winding reel and the number of winding turns of the fishing line according to the rotation information, wherein the number of winding turns is stored in the memory;

when a fishing line is released, closed-loop control is performed, an over-loop speed is calculated based on the speed information, the rotational speed of the spool is calculated based on the rotation information, a tangential speed is calculated based on the rotational speed, the number of winding turns at that time, and the conversion relation parameter, a correction signal for correcting the rotational speed of the spool is calculated based on the tangential speed and the over-loop speed at that time, and an electromagnetic induction current in the brake coil is controlled by the current control unit based on the correction signal.

2. The electromagnetic brake device of the fishing reel according to claim 1, wherein the guide ring speed measuring mechanism detects the speed information and processes the speed information to the controller, and the detection is implemented in any one of the following manners:

the guide ring speed measuring mechanism further comprises a projection light source and a photoelectric sensor, wherein the projection light source irradiates the fishing line by using the fishing line with the interval of the color segments with different reflectivities and fixed mark lengths, the photoelectric sensor converts the detected reflected light signal into an electric pulse signal, and the controller calculates the ring passing speed according to the electric pulse signal and the fixed mark lengths; or,

the guide ring speed measuring mechanism further comprises a projection light source and an image sensor, the projection light source irradiates a fishing line, the image sensor picks up local image information reflected by the moving fishing line according to a fixed time interval, and the controller calculates the ring passing speed according to the moving distance of the local images at the fixed time interval by performing front-back comparison analysis processing on the local images; or,

the guide ring speed measuring mechanism is a magnetic-sensing sensor, a fishing line with magnetic marks with fixed mark lengths and spaced intervals is used, the magnetic-sensing sensor converts detected magnetic signals into electric pulse signals, and the controller calculates the ring passing speed according to the electric pulse signals and the fixed mark lengths.

3. The electromagnetic brake device according to claim 2, wherein the controller controls the electromagnetically induced current in the brake coil in any one of the following manners:

the current control unit is a switch element, and the correction signal controls the switch-on and switch-off of the switch element in a switching mode; or,

the current control unit is a switching element, and the correction signal controls the on-off time length ratio of the switching element in a mode of adjusting the duty ratio of the PWM signal; or,

the current control unit is a current intensity adjusting element, and the correction signal adjusts the current intensity in the current intensity adjusting element in a mode of changing intensity.

4. The electromagnetic brake device for a fishing reel according to claim 2, wherein the closed-loop control is implemented by any one of:

taking the over-loop speed as an input target control quantity and taking the tangential speed as an output controlled quantity and a feedback quantity; or,

taking a set allowable speed difference threshold value as an input target control quantity, and taking a difference value between a tangential speed and a loop passing speed as an output controlled quantity and a feedback quantity; or,

the set allowable float length threshold is used as an input target control quantity, and the float length is used as an output controlled quantity and a feedback quantity.

5. The electromagnetic braking apparatus for a fishing reel according to claim 2, wherein the information detected by the rotation direction detecting means is processed by the controller in any one of the following manners:

the rotation direction detecting device is an auxiliary rotation speed sensor provided on the reel unit, and the controller calculates the rotation direction of the spool based on a phase difference between rotation pulse signals generated by the auxiliary rotation speed sensor and the main rotation speed sensor; or,

the rotation direction detecting device is a state detecting element provided on the reel unit, the state detecting element detects a take-up and pay-off state of the reel, and the controller determines the rotation direction of the spool based on a signal generated by the state detecting element.

6. The electromagnetic braking device for a fishing reel according to any of claims 1 to 5, wherein the memory stores in advance a conversion parameter corresponding to each of a plurality of types of thick and thin fishing lines, and the conversion parameter is selectively set in any of:

7. The electromagnetic braking device for a fishing reel according to any of claims 1 to 5, wherein the controller calculates and stores the conversion relation parameter in any of the following manners:

calculating sample data of one or more ring passing speeds, winding turns and rotating speeds when the fishing line is wound on the winding reel to form a data sample group, calculating the conversion relation parameter according to the sample data, and recording and storing the conversion relation parameter; or,

calculating conversion ratios between ring passing speeds and rotating speeds corresponding to different winding turns when the fishing line is wound on the winding reel, making a conversion relation table by using a series of the winding turns and the corresponding conversion ratios, recording and storing the conversion relation table, inquiring the matched conversion ratio in the conversion relation table according to the winding turns when the fishing line is discharged, and calculating the tangential speed according to the rotating speed of the winding reel and the conversion ratio.

8. The electromagnetic braking apparatus for a fishing reel according to claim 7, wherein the controller determines whether or not to execute the processing of calculating and storing the conversion relation parameter when winding the fishing line, in any one of the following manners:

the processing step is executed when the winding reel winds the fishing line each time; or,

the fishing reel body is provided with a setting button electrically connected with the controller, and whether the processing step is executed or not is controlled by the setting button; or the controller is provided with a wireless communication module which is in wireless communication connection with an external operation terminal, and whether the processing step is executed or not is controlled through the external operation terminal; or,

and executing the processing step when the number of turns of the fishing line on the winding reel is lower than the number of turns threshold or the conversion relation parameter is not stored in the memory.

9. A fishing line, characterized in that: the fishing line has a signal mark interval of fixed mark length, the signal mark can be detected by the guide ring speed measuring mechanism of the fishing line reel comprising the guide ring speed measuring mechanism and converted into an electric pulse signal, and the electric pulse signal and the fixed mark length are used for calculating the ring passing speed.

10. The fishing line according to claim 9, characterized in that: the signal mark interval is formed by the interval of color segments with different light reflection rates, and the signal mark can be detected by the guide ring speed measuring mechanism comprising a projection light source and a photoelectric sensor and is converted into the electric pulse signal.

11. The fishing line according to claim 9, characterized in that: the fishing line is attached with a magnetic material, the signal mark interval is formed by recording a series of magnetic signals, and the magnetic signals can be detected by the guide ring speed measuring mechanism comprising a magnetic sensitive sensor and converted into the electric pulse signals.

12. A fishing line, wherein a magnetic material is attached to said fishing line, said magnetic material being adapted to record a magnetic signal according to claim 11.