Low-power electric fishing reel control circuit, electric fishing reel and fishing rod

Abstract

The application provides a low-power electric fishing reel control circuit, an electric fishing reel and a fishing rod. The control circuit comprises a low-power control unit, a switching unit, an energy storage unit and a power supply unit. The low-power control unit determines the control mode of the winding drum of the electric fishing reel according to a judgment signal and outputs a mode signal to the switching unit. The control mode comprises an acceleration mode and a braking mode. The switching unit controls the charging and discharging mode of the energy storage unit according to the mode signal. The power supply unit obtains power for the low-power control unit from the driving circuit. The technical scheme of the application makes full use of the energy generated by the winding drum braking, and realizes the long-term working state of the control unit without a separate power supply module. After the fishing rod is placed for a long time, the winding drum can still enter the acceleration mode in time in the initial stage of rod casting.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of intelligent fishing tackle, and particularly provides a low-power electric fishing reel control circuit, an electric fishing reel using the low-power electric fishing reel control circuit, and a fishing rod provided with the electric fishing reel. BACKGROUND

[0002] In recent years, with the increasing popularity of fishing, fishing equipment is also developing, and electric fishing reels capable of realizing various automatic control functions have been increasingly widely applied. The existing electric fishing reels generally have a braking function to avoid the problem of fish line explosion caused by the fact that the rotation speed of the line reel exceeds the speed of the hook (also known as recoil) during the rod casting process. The electric fishing reel utilizes the principle of electromagnetic induction to apply a magnetic braking force to the rotating line reel through the magnetism of the braking magnet to realize the braking of the line reel. The braking process generally occurs in the second half of the rod casting process, that is, the speed of the fish line driven by the hook has entered the deceleration stage from the highest speed stage, which can effectively solve the problem of line reel recoil explosion.

[0003] However, in the first half of the rod casting process, the inertia of the line reel itself causes it to generate a drag force on the fish line in the opposite direction of the casting direction. At this time, if the line reel cannot be accelerated rapidly, the drag force will significantly consume the kinetic energy of the forward movement of the hook, thereby resulting in a reduction in the final casting distance. In addition, since the forward kinetic energy of the hook is the largest at the initial stage of the rod casting process, and the drag effect of the line reel is also the largest, the control system or control circuit of the electric fishing reel should intervene in the acceleration control of the line reel as early as possible, especially after the fishing rod has been idle for a long time, the electric fishing reel should still maintain a timely response to the rod casting process.

[0004] Therefore, the control of the electric fishing reel should be throughout the entire casting process, and should have the performance of low power consumption and long standby time to ensure that the fishing rod can still take over the control of the acceleration or braking of the line reel in the first time of the rod casting process after being idle for a long time. SUMMARY

[0005] The application aims to provide a low-power electric fishing reel control circuit, an electric fishing reel, and a fishing rod, which can realize good control of the entire rod casting process and long standby time without additional power supply devices.

[0006] The first aspect of the application provides a low-power electric fishing reel control circuit for accelerating or braking the rotation of the line reel driven by the motor of the electric fishing reel through the driving circuit of the electric fishing reel. The control circuit comprises a control unit, a switching unit, an energy storage unit, and a power supply unit.

[0007] The control unit determines a control mode of the motor according to the received judgment signal and outputs a mode signal to the switching unit, the control mode including an acceleration mode and a braking mode; the switching unit controls a charge-discharge mode of the energy storage unit according to the received mode signal, wherein when the control mode is the acceleration mode, the energy storage unit is in a discharge mode to the drive circuit, and when the control mode is the braking mode, the energy storage unit is in a charge mode to the drive circuit; the power supply unit obtains power from the drive circuit to supply power to the control unit.

[0008] Further, the motor includes a stator and a rotor coaxially arranged with the winding drum, wherein the stator and the rotor are respectively provided with a magnetic core and a plurality of electromagnetic coils matched with each other; the drive circuit is electrically connected with the energy storage unit through a voltage terminal; and the voltage terminal is electrically connected with each group of electromagnetic coils, and the drive circuit generates a driving current of the rotor and an induced current generated by rotation of the rotor based on the voltage at the voltage terminal.

[0009] Preferably, the control unit controls the timing of the connection of each group of electromagnetic coils with the drive circuit and the current size through the multi-path rotation speed control signal output to the drive circuit.

[0010] Preferably, the judgment signal includes at least one of the following signals: a level trigger signal, a speed signal, an acceleration signal, a posture signal, and a voltage at the voltage terminal.

[0011] Preferably, the energy storage unit is a large-capacity capacitor, a first end of the large-capacity capacitor is grounded, and a second end of the large-capacity capacitor is electrically connected with the voltage terminal through the switching unit.

[0012] Preferably, a first end of the switching unit is electrically connected with the second end of the large-capacity capacitor, and a second end of the switching unit is connected with the voltage terminal; a control end of the switching unit receives the mode signal and controls the current flow direction between the first end of the large-capacity capacitor and the voltage terminal based on the mode signal and the voltage of the voltage terminal.

[0013] Preferably, the switching unit includes a first triode, a first resistor, a first PMOS tube, and a first diode; a base of the first triode receives the mode signal, an emitter is grounded, and a collector is electrically connected with a first end of the first resistor; a second end of the first resistor is electrically connected with a first end of the switching unit; a G pole of the first PMOS tube is electrically connected with the emitter of the first triode, an S pole is electrically connected with the second end of the large-capacity capacitor, and a D pole is electrically connected with the voltage terminal; a positive pole of the first diode is electrically connected with the voltage terminal, and a negative pole is electrically connected with the second end of the large-capacity capacitor.

[0014] Preferably, the power supply unit comprises a boost module, a first inductor, a second diode, a second resistor and a first voltage stabilizing diode; the G terminal of the boost module is grounded, the input terminal is electrically connected with the voltage terminal through the first inductor, the positive terminal of the second diode is electrically connected with the input terminal of the boost module, and the negative terminal is electrically connected with the output terminal of the boost module; the negative terminal of the first voltage stabilizing diode is grounded, and the positive terminal is electrically connected with the output terminal of the boost module through the second resistor and provides power supply for the control unit which is not more than 3.3V.

[0015] Preferably, the power supply unit supplies power to the control unit from the drive circuit when the voltage at the voltage terminal is greater than the preset voltage threshold.

[0016] Preferably, the preset voltage threshold is determined according to the minimum boost threshold of the boost module.

[0017] Preferably, the power supply unit further comprises at least one first capacitor, the first end of the first capacitor is grounded, and the second end is electrically connected with the output terminal of the boost module.

[0018] Preferably, the power consumption of the control unit is not more than 2.7mW.

[0019] The second aspect of the present application provides an electric fishing reel, comprising a frame, a line reel accommodated in the frame, a handle for rotating the line reel, and a motor arranged in the inside of the line reel.

[0020] The electric fishing reel further comprises a drive circuit and the aforementioned low-power electric fishing reel control circuit; the drive circuit can drive the motor to rotate the line reel under current drive and generate induced current when the line reel drives the motor to rotate; and the electric fishing reel control circuit controls the drive circuit to accelerate or brake the motor based on the received judgment signal.

[0021] The third aspect of the present application further provides a fishing rod which uses the aforementioned electric fishing reel to pay out and reel in the fishing line.

[0022] The low-power electric fishing reel control circuit provided by the application switches the driving circuit of the line reel between the acceleration mode and the braking mode through the switching unit, provides additional driving force for the accelerated rotation of the line reel in the initial fishing line dragging stage of the rod throwing and line throwing, and increases the rotation speed of the line reel as soon as possible under the premise of consuming as little forward kinetic energy of the hook as possible to enter the matching stage, thereby effectively increasing the water entry distance of the hook, and then charging the energy storage unit through the line reel braking, in addition, the remaining power in the charging and discharging process is collected through the power supply unit to control the power supply of the control unit, so that the electric fishing reel can be accurately controlled in the whole rod throwing and line throwing process without additional power supply device, and has the performance of low power consumption and long standby time. The electric fishing reel using the control system and the fishing rod provided with the electric fishing reel can still achieve ideal effect when throwing the rod and line for the first time after a long period of standing. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an electric fishing reel;

[0024] Figure 2 It is a schematic diagram of the relative state change between the hook and the line reel in the whole process of using the existing electric fishing reel to throw the rod and line;

[0025] Figure 3 It is a circuit connection schematic diagram of the driving circuit of the motor inside the line reel in some embodiments;

[0026] Figure 4 It is an architecture schematic diagram of the low-power electric fishing reel control circuit according to the embodiments of the application;

[0027] Figure 5 It is a realization principle diagram of the control unit according to the embodiments of the application;

[0028] Figure 6 It is a principle schematic diagram of the switching of the acceleration mode and the braking mode realized by the cooperation of the switching unit and the energy storage unit according to the embodiments of the application;

[0029] Figure 7 It is a circuit principle diagram of the switching unit according to the embodiments of the application;

[0030] Figure 8 It is a schematic diagram of the relative state change between the hook and the line reel in the whole process of using the electric fishing reel according to the embodiments of the application to throw the rod and line;

[0031] Figure 9 It is a circuit principle diagram of the power supply unit according to the embodiments of the application. DETAILED DESCRIPTION

[0032] In the following, the application will be further described based on the preferred embodiments and with reference to the drawings.

[0033] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.

[0034] Figure 1 A schematic diagram of the structure of an existing electric fishing reel is shown, such as Figure 1 As shown, the electric fishing reel includes a frame 10 that is fixed relative to the fishing rod, and a spool 20 housed within the frame 10. The spool 20 is rotatably connected to the frame 10, and its outer circumferential surface is used for winding fishing line. In addition, the electric fishing reel also includes a handle 30 that can manually rotate the spool 20 in the forward (i.e., letting out line) or reverse (i.e., reeling in line) direction. The handle 30 rotates at a specific speed ratio with the spool 20 through a set of mutually cooperating gears. Furthermore, the gears engage or disengage the handle 30 from the spool 20 through various clutch mechanisms known to those skilled in the art.

[0035] Furthermore, in some embodiments, the electric fishing reel also includes a reciprocating line guiding mechanism. For example, the reciprocating guiding mechanism may include a bidirectional screw and a guide rod arranged parallel to the spool 20. During the rotation of the spool 20, the bidirectional screw rotates forward or backward through a gear that meshes with it. The guide member, with a through hole (for the fishing line to pass through), has a thread that meshes with the bidirectional screw and reciprocates along the bidirectional screw under the guidance of the guide rod, thereby achieving uniform winding of the fishing line. The above structure and its operation are well known to those skilled in the art and will not be described in detail here.

[0036] Furthermore, a magnetic core composed of permanent magnets and a coil assembly composed of multiple sets of electromagnetic coils (not shown in the figure) are coaxially arranged inside the drum 20. One of the magnetic cores or coil assemblies (e.g., the magnetic core) serves as the stator and remains fixed relative to the frame 10, while the other (e.g., the coil assembly) serves as the rotor and is fixedly connected to the drum 20. When the drum 20 rotates relative to the frame 10, the electromagnetic coils generate an induced current by cutting the magnetic field generated by the magnetic core. At this time, the drum 20 acts as a power generation device, converting rotational kinetic energy into electrical energy, thereby producing a braking effect.

[0037] The above braking of the winding drum speed is mainly to prevent the "line explosion" situation when the winding drum speed exceeds the casting speed, Figure 2 The whole process of rod casting using an existing specific electric fishing reel is shown, as Figure 2 As shown, according to the tension and relative speed relationship between the winding drum and the fishing line during the rod casting process, the whole rod casting process can be divided into the fishing line dragging stage, the matching stage, the winding drum recoil stage, and the fishing hook entering the water stage. Obviously, the "line explosion" situation generally occurs in the latter half of the rod casting, at which time the speed of the fishing line driven by the fishing hook has gradually decreased from the highest speed, and until the fishing hook enters the water, the forward speed will sharply decrease. In this process, since the rotational inertia of the winding drum is much larger than the momentum of the fishing hook and the fishing line, its speed decrease trend is much smaller than the deceleration of the fishing hook and the fishing line, so the winding drum needs to be effectively braked.

[0038] Using existing control strategies to brake the winding drum can effectively reduce the occurrence of "line explosion", however, through analysis of Figure 2 It can be found that the factors affecting the whole casting effect do not only appear in the latter half of the rod casting process, especially in the fishing line dragging stage at the beginning of the rod casting, since the fishing hook needs to drive the winding drum to gradually accelerate by moving forward, a large part of the kinetic energy of the fishing hook when it is cast out is consumed in dragging the winding drum, which will cause great loss to the energy of the forward casting, thus greatly shortening the final water entry point distance of the fishing hook. Therefore, it is necessary to improve the control strategy of the existing electric fishing reel, to control the winding drum according to the interaction relationship between the winding drum and the fishing line in different stages of the whole rod casting process, so as to more fully utilize the electromagnetic induction effect between the stator and the rotor, to make it act as a motor to speed up the rotation of the winding drum in the initial stage of the rod casting, and as a generator to consume the kinetic energy of the winding drum in the winding drum recoil and fishing hook entering water stage, thereby preventing line explosion while effectively increasing the casting distance. In addition, when the fishing rod has been stationary for a long time, it is more ideal to ensure that the control circuit can intervene in the acceleration of the winding drum at the initial stage of the rod casting for the first time when it is used again. Therefore, the low power consumption and long standby requirement of the whole control circuit also needs to be considered.

[0039] To achieve the above object, the application provides an improved electric fishing reel control circuit for controlling an electric fishing reel. As described above, the electric fishing reel comprises a frame fixed relative to a fishing rod and a spool accommodated in the frame, the spool is rotatably connected with the frame, and the spool comprises a permanent magnet (stator) fixed with the frame and a coil combination (rotor) comprising a plurality of electromagnetic coils fixed with the spool and rotatable around the stator. In the embodiment of the application, the stator and the rotor combination constitute a motor which can function as an electric motor or a generator. Further, the electric fishing reel has a driving circuit for driving the motor, and the driving circuit can drive the motor to rotate and drive the spool to rotate under the drive of current and generate induced current (also referred to as resistance current) through the rotation of the spool.

[0040] Figure 3 As shown in the circuit connection diagram of the driving circuit in some specific embodiments, Figure 3 the main part of the driving circuit is a three-phase bridge rectifier circuit, which is electrically connected with three groups of electromagnetic coils through U, V and W terminals, and the direction of current is controlled by the on-off state of two MOS tubes for each rectifier circuit (M1 and M4 terminals are used for controlling U path, M2 and M4 terminals are used for controlling V path, and M3 and M6 terminals are used for controlling W path).

[0041] By using electromagnetic induction effect, the rotor of the motor can rotate around the stator under the drive of current in the driving circuit, at this time, the motor functions as an electric motor to convert electric energy into kinetic energy of rotation, and the rotor can also rotate around the stator to generate corresponding induced current in the driving circuit, at this time, the motor functions as a generator to generate electricity by using kinetic energy of rotation, wherein, the state of the motor is determined by the voltage of the voltage terminal FA of the driving circuit, when the voltage of the voltage terminal FA is higher than the induced electromotive force generated by the rotation of the rotor, the U, V and W terminals are supplied with power from the voltage terminal FA, and then the rotation of the rotor is accelerated by adjusting the on-off rhythm of the power supply to the U, V and W terminals; when the voltage of the voltage terminal FA is lower than the induced electromotive force generated by the rotation of the rotor, the mechanical energy of the rotation of the rotor is continuously converted into electric energy and the induced current is output from the U, V and W terminals to the voltage terminal FA, thereby achieving the braking effect of the rotor.

[0042] Further, the M1 end to the M6 end is connected with a control unit of the electric fishing reel control circuit to be described later, receives the rotational speed control signal output by the control unit. Generally, the rotational speed control signal can be a PWM signal. By adjusting the timing of the PWM signal output to the M1 to M6 end, the electromagnetic coil connected to the U, V, W path and the driving circuit can be sequentially turned on and off in a certain timing. Meanwhile, by adjusting the duty cycle of the PWM signal, the current size after the electromagnetic coil is turned on can be further adjusted. The above-mentioned technology of controlling the electromagnetic coil to be sequentially turned on and off by the driving circuit is well known to those skilled in the art, and will not be described here. In addition, it should be known that, Figure 3 The driving circuit shown is only one optional embodiment of the present application. When the number of electromagnetic coils in the coil combination is 2 groups, 4 groups or other multiple groups, the above-mentioned driving circuit needs to be adjusted accordingly to meet the control of each group of electromagnetic coils.

[0043] Figure 4 The architecture schematic diagram of the low-power electric fishing reel control circuit provided according to some preferred embodiments of the present application is shown in FIG. 1. Figure 4 As shown in FIG. 1, the electric fishing reel control circuit includes a control unit, a switching unit, an energy storage unit and a power supply unit. The control unit determines the control mode of the motor (in some embodiments of the present application, the control mode includes the acceleration mode and the braking mode) according to the received judgment signal and outputs a mode signal to the switching unit. The switching unit controls the charge and discharge mode of the energy storage unit according to the received mode signal. When the control mode is the acceleration mode, the energy storage unit is in the discharge mode of the driving circuit. When the control mode is the braking mode, the energy storage unit is in the charging mode of the driving circuit. The power supply unit obtains the power from the driving circuit to supply the control unit.

[0044] Generally, the above-mentioned units and their connection lines are arranged on a circuit substrate. The circuit substrate is fixed inside the housing of the electric fishing reel frame and is subjected to waterproof sealing treatment.

[0045] The units will be described in detail below in combination with the drawings and specific embodiments.

[0046] In some specific embodiments of the present application, the control unit can be implemented by various microprocessor (MCU) chips known to those skilled in the art. Generally, the MCU chip has multiple IO ports to realize the input and output of signals.

[0047] In preferred embodiments of the present application, the working voltage of the control unit is 3.3V, Figure 5 The circuit schematic diagram of the control unit in one specific embodiment is shown in FIG. 2. Figure 5As shown, the core chip of the control unit is specifically STM32L051X6 / 8, and the power consumption of the working state is not greater than 2.7 mW. By using a low-power chip as the core of the control circuit, the standby time of the entire electric fishing reel can be significantly prolonged, so that it can remain in the standby state for a long time without use, and ensure normal operation during the first rod throwing and line throwing process when used again. In other optional embodiments, the main control unit can also select a suitable model of MCU chip according to the size of the line cup frame and the demand for data processing.

[0048] As shown in Figure 5 , the outputs M1 to M6 of the chip STM32L051X6 / 8 are electrically connected with the M1 to M6 ends of the driving circuit respectively, and the on-off state of each electromagnetic coil and the driving circuit is controlled by sending a PWM signal.

[0049] Further, as shown in Figure 5 , the IO01 to IO05 ports are used to input various judgment signals to the control unit, and the control unit determines whether to charge or discharge the driving circuit according to the received judgment signal through the built-in program, and then outputs the corresponding mode signal to the switching unit.

[0050] The output of the control unit depends on the evaluation result of the judgment signal. In the embodiments of the present application, the type of the judgment signal can be diverse. For example, the rotation speed signal of the winding drum can be obtained by a counter arranged in the frame of the electric fishing reel, or the rotation speed signal of the winding drum can be obtained by detecting the frequency of the on-off of the electromagnetic coil through the detection circuit connected with each electromagnetic coil. For another example, the rotation acceleration signal of the winding drum can be obtained by calculating the change rate of the rotation speed. Obviously, the rotation acceleration can be further converted into the torque of the winding drum and the corresponding fishing line tension and other information. For another example, the attitude signal of the electric fishing reel or the fishing rod can be obtained by arranging an accelerometer at a specific position of the electric fishing reel or the fishing rod.

[0051] In addition, the acquisition of the judgment signal can also be realized by the combination of mechanical structure and circuit. For example, an automatically pop-up mode switching button and a circuit matched with the mode switching button can be arranged on the frame of the electric fishing reel. When the user presses the mode switching button, the circuit is triggered and outputs a high-level signal (or a low-level signal) to the control unit. When the user removes the finger, the mode switching button automatically pops up, and the circuit outputs a low-level signal (or a high-level signal) to the control unit.

[0052] The control unit evaluates the stage of the rod casting through the pre-set evaluation program after receiving the above-mentioned various kinds of judgment signals, and outputs the corresponding mode signal. For example, when the judgment signal is the level trigger signal, if the control unit receives the level signal triggered by the user pressing the mode switching button, it will output the mode signal corresponding to the acceleration mode to the switching unit. When the mode switching button is released, the control unit will receive the opposite level signal and output the mode signal corresponding to the braking mode to the switching unit. For another example, the control unit can calculate the tension of the fishing line dragging the reel in real time through the continuously received acceleration signal, judge the stage of the rod casting according to the size of the tension, and output the corresponding mode signal to the switching unit. For another example, the control unit can also evaluate the stage of the rod casting according to the posture signal obtained by the acceleration sensor, and then output the corresponding mode signal to the switching unit.

[0053] As shown in Figure 5 , the above-mentioned mode signal is output to the switching unit through the IO06 port. It is well known to those skilled in the art that the signal in two states is transmitted through the IO port. For example, in some specific embodiments, the mode signal can be a high-low level signal, in which the high level signal is the mode signal corresponding to the acceleration mode, and the low level signal is the mode signal corresponding to the braking mode, or vice versa.

[0054] Figure 6 The switching unit and the energy storage unit cooperate to realize the switching of the acceleration mode and the braking mode in a preferred embodiment. As shown in Figure 6 , the energy storage unit is a large-capacity capacitor, the first end a1 of which is grounded, and the second end a2 of which is electrically connected with the first end b1 of the switching unit. The second end b2 of the switching unit is electrically connected with the voltage terminal FA. The control end c1 of the switching unit is used to receive the mode signal output by the control unit, and make the switching unit switch between the charging mode and the discharging mode according to the mode signal. When the mode signal is the acceleration mode, the switching unit enters the charging mode, and the one-way circuit from b1 to b2 is turned on, so that the current can flow from the a2 end of the large-capacity capacitor to the FA end of the driving circuit to drive the reel to rotate at high speed. When the mode signal is the braking mode, the switching unit enters the discharging mode, and the one-way circuit from b2 to b1 is turned on, so that the current can flow from the FA end of the driving circuit to the a2 end of the large-capacity capacitor to charge the large-capacity capacitor.

[0055] Figure 7 The circuit schematic diagram of a specific switching unit is shown in Figure 7As shown, the switching unit is a circuit composed of multiple discrete elements. Specifically, a unidirectional charging circuit is formed from the FA terminal through the first diode D7 to the positive pole of the energy storage unit (i.e., the large-capacity capacitor C3-5 in the figure), and a unidirectional discharging circuit is formed from the positive pole of the large-capacity capacitor C3-5 through the first PMOS tube Q5 to the FA terminal, wherein the S pole and the D pole of the first PMOS tube Q5 are connected to the positive pole of the large-capacity capacitor C3-5 and the FA terminal, respectively. The mode signal is transmitted to the base of the first NPN-type triode Q4 through the IO06 port, while the base of the first triode Q4 is grounded through the resistor R41, the collector is connected to the G pole of the first PMOS tube Q5, and the emitter is grounded. The mode signal accessed through the IO06 port can control the first triode Q4 to switch between the on and off states, further control the switching of the G pole level of the first PMOS tube Q4, and make the unidirectional discharging circuit switch between the on and off states. It should be known that, Figure 7 The embodiment shown is only a specific implementation of the switching unit based on the mode signal to switch between the charging mode and the discharging mode, but does not constitute a limitation on the present application. Those skilled in the art can select other discrete elements or control chips to realize the switching unit on the basis of the same technical concept.

[0056] Figure 8 The schematic diagram showing the relationship between the spool and the fishing line in each stage during the whole process of the rod throwing and line casting under the control of the above-mentioned control circuit is shown. By comparing Figure 8 and Figure 1It can be seen that, by using the above large-capacity capacitor and switching unit, the motor can be provided with additional driving force through capacitor discharge in the initial fish line dragging stage of the rod casting, and the additional driving force can greatly reduce the fish line dragging force required to accelerate the reel, so as to as quickly as possible increase the speed of the reel to enter the matching stage under the premise of consuming as little kinetic energy of the hook as possible. At this time, since the kinetic energy of the hook is not consumed on the reel, the speed of the hook is much higher than that without the additional driving force, that is, the speed of the reel and the hook entering the matching state is greatly improved, and the time length of the reel and the fish line in the matching state is greatly prolonged, thereby effectively increasing the water entry distance of the hook. After the hook starts to decelerate, the reel still drives the motor to rotate at a higher speed than the forward speed of the hook, and the highest induced electromotive force will be generated in the driving circuit. At this time, the switching unit is switched to the charging mode, and the motor inside the reel is braked to act as a generator to charge the large-capacity capacitor. After the large-capacity capacitor is fully charged, it can again provide driving force to the reel through the motor in the next dragging stage of the rod casting. The above control mechanism effectively converts the energy generated by the reel braking in the later stage of the line casting into the energy for driving the reel in the early stage of the next line casting, without the need for additional power supply devices and the ability to achieve fine control of the whole process of the rod casting. The time of the reel and the fish line in the matching state is greatly prolonged, which prevents "blowout" and effectively increases the casting distance.

[0057] It should be noted that, in the embodiments of the present application, the switching unit is in the acceleration mode or the braking mode, which does not mean that the switching unit will necessarily control the energy storage unit to discharge or charge the driving circuit. The charging and discharging is also affected by the voltage of the positive electrode of the large-capacity capacitor and the voltage of the FA terminal. For example, after the rod casting is finished, the reel is in a stationary state. At this time, even if the switching unit is in the braking mode, since the electromagnetic coil does not cut the magnetic field to generate induced current, the FA terminal cannot charge the large-capacity capacitor C3-5 through the first diode D7.

[0058] Further, it is found that the induced electromotive force generated by the rotation of the reel during the rod casting and the line winding process varies between 0V and 10V, and the level of the induced electromotive force is strongly correlated with the speed of the reel. Therefore, in some preferred embodiments, the level of the induced electromotive force can also be used to determine the stage of the rod casting to determine the timing of mode switching.

[0059] Specifically, in some preferred embodiments of the present application, the voltage signal at the FA end can be used as the judgment signal. During the fishing line dragging stage, the driving circuit drives the motor to drive the spool to accelerate, so that the voltage at the FA end rises rapidly until it rises to a preset voltage value, at which point it is considered that the rotational speed of the spool has reached a sufficient speed to enter the matching state. At this time, the voltage at the FA end can be continuously monitored, and the braking mode can be switched in time to avoid the spool from entering the recoil stage in advance due to continued acceleration. The voltage value used to determine the timing of mode switching can be obtained by statistically analyzing the voltage at the FA end when the spool reaches the matching state through multiple line throwing tests on a specific spool. In addition, the voltage signal at the FA end can be further combined with the aforementioned rotational speed signal, acceleration signal, etc. to make the judgment of the timing of mode switching more accurate.

[0060] As described above, in some embodiments of the present application, the core chip of the control unit uses a low-power chip. Although a button cell, a rechargeable battery, etc. can be used to power it, due to the limitations of the overall space structure of the electric fishing reel, adding the above-mentioned separate power supply module will occupy the internal space of the electric fishing reel, and even make the volume of the fishing reel increase significantly. Therefore, the preferred solution is to use the electrical energy generated during the acceleration and braking process of the electric fishing reel to power the control unit.

[0061] To this end, in some preferred embodiments of the present application, as shown in Figure 1 , the power supply unit is electrically connected to the FA end. As described above, during the line releasing and winding process, the induced electromotive force at the FA end varies between 0V and 10V. When the voltage at the FA end is greater than a preset voltage threshold, the power supply unit will use the induced current generated by the driving circuit to power the control unit.

[0062] Figure 9 The circuit schematic diagram of the power supply unit in some preferred embodiments is shown in Figure 9 , the power supply unit includes a boost module DC1, a first inductor L1, a second diode DD1, a second resistor R83, and a first zener diode D8. The G terminal of the boost module DC1 is grounded, the input end is electrically connected to the FA end through the first inductor L1, the positive terminal of the second diode DD1 is electrically connected to the input end of the boost module DC1, and the negative terminal is electrically connected to the output end of the boost module DC1. The positive terminal of the first zener diode D8 is grounded, and the negative terminal is electrically connected to the output end of the boost module DC1 through the second resistor R83.

[0063] Figure 9The power supply unit shown can boost the voltage at the FA end when the voltage at the FA end is greater than the minimum boost threshold of the boost module DC1 (i.e. the preset voltage threshold), whether the spool is in an acceleration or braking state or the spool is being manually reeled in by the handle, and the voltage at the power supply end of the control unit is stably clamped at about 3.3V by using the conduction characteristic of the negative electrode of the first voltage stabilizing diode D8.

[0064] Further, in some preferred embodiments, as shown, the power supply unit further comprises at least one first capacitor CD1, the first end of the first capacitor CD1 being grounded and the second end being electrically connected to the output end of the boost module DC1; in some other preferred embodiments, a capacitor CD2 can be added in parallel with the first capacitor CD1. The above-mentioned first capacitor CD1 and capacitor CD2 can act as a "reservoir" to ensure that the control power supply can still be provided with 3.3V power supply when the voltage at the FA end is less than the boost threshold of the boost module DC1 for a long time (which generally represents that the fishing rod has not been operated for a long time), so that the control unit can still intervene in the acceleration drive of the motor at the first time during the first rod throwing operation after the fishing rod has been placed for a long time. Figure 8

[0065] Some specific embodiments of the present application also provide an electric fishing reel, which comprises a frame, a spool accommodated in the frame, a handle for rotating the spool, an internal motor of the spool, a driving circuit and the aforementioned electric fishing reel control circuit. The driving circuit can drive the motor to rotate the spool under current drive and generate induced current when the spool drives the motor to rotate. The electric fishing reel control circuit controls the driving circuit based on the received judgment signal to realize the acceleration and braking of the motor. The specific embodiments of the driving circuit and the electric fishing reel control circuit have been described in detail above, and will not be described again here.

[0066] Some specific embodiments of the present application also provide a fishing rod, which uses the aforementioned electric fishing reel to reel and reel in the fishing line.

[0067] The specific embodiments of the present application have been described in detail above, and those skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also belong to the protection scope of the claims of the present application.​

Claims

1. A low-power consumption electric fishing reel control circuit, by controlling the driving circuit of the electric fishing reel to drive the motor of the electric fishing reel to accelerate or brake the rotation of the reel, characterized in that: it comprises a control unit, a switching unit, an energy storage unit and a power supply unit; the control unit determines the control mode of the motor according to the received judgment signal and outputs a mode signal to the switching unit, the control mode including acceleration mode and braking mode; the switching unit controls the charge and discharge mode of the energy storage unit according to the received mode signal, wherein when the control mode is acceleration mode, the energy storage unit is in discharge mode to the driving circuit, and when the control mode is braking mode, the energy storage unit is in charging mode to the driving circuit; the power supply unit obtains the power from the driving circuit to supply the control unit; the motor comprises a stator and a rotor coaxially arranged with the reel, wherein the stator and the rotor are respectively provided with magnetic cores and multiple groups of electromagnetic coils matched with each other; the driving circuit is electrically connected with the energy storage unit through a voltage connection; and the voltage connection is electrically connected with each group of electromagnetic coils, and the driving circuit generates the current to drive the rotor and the induced current generated by the rotation of the rotor based on the voltage at the voltage connection; the energy storage unit is a large-capacity capacitor, the first end of the large-capacity capacitor is grounded, and the second end is electrically connected with the voltage connection through the switching unit; the first end of the switching unit is electrically connected with the second end of the large-capacity capacitor, and the second end of the switching unit is electrically connected with the voltage connection, wherein the first end and the second end of the switching unit are simultaneously connected with a one-way charging circuit and a one-way discharging circuit; the control end of the switching unit receives the mode signal, and controls the current flowing direction between the first end of the large-capacity capacitor and the voltage connection based on the mode signal and the voltage of the voltage connection; the judgment signal includes at least one of the following signals: level trigger signal, speed signal, acceleration signal, attitude signal and voltage at the voltage connection. 2.The low-power consumption electric fishing reel control circuit according to claim 1, characterized in that: the control unit controls the timing and current size of the connection between each group of electromagnetic coils and the driving circuit through the multi-speed control signal output to the driving circuit. 3.The low-power consumption electric fishing reel control circuit according to claim 1, characterized in that: the switching unit comprises a first triode, a first resistor, a first PMOS tube and a first diode; the base of the first triode receives the mode signal, the emitter is grounded, and the collector is electrically connected with the first end of the first resistor; the second end of the first resistor is electrically connected with the first end of the switching unit; the G pole of the first PMOS tube is electrically connected with the emitter of the first triode, the S pole is electrically connected with the second end of the large-capacity capacitor, and the D pole is electrically connected with the voltage connection; the anode of the first diode is electrically connected with the voltage connection, and the cathode is electrically connected with the second end of the large-capacity capacitor. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 4. The low-power consumption electric fishing reel control circuit according to claim 1, wherein: the power supply unit comprises a boost module, a first inductor, a second diode, a second resistor and a first voltage stabilizing diode; the G terminal of the boost module is grounded, and the input terminal is electrically connected to the voltage terminal through the first inductor, the negative terminal of the second diode is electrically connected to the input terminal of the boost module, and the positive terminal is electrically connected to the output terminal of the boost module; the positive terminal of the first voltage stabilizing diode is grounded, and the negative terminal is electrically connected to the output terminal of the boost module through the second resistor and provides power supply for the control unit, and the power supply is not more than 3.3V.

5. The low-power consumption electric fishing reel control circuit according to claim 4, wherein: when the voltage at the voltage terminal of the power supply unit is greater than a preset voltage threshold, the power supply unit supplies power to the control unit from the drive circuit.

6. The low-power consumption electric fishing reel control circuit according to claim 5, wherein: the preset voltage threshold is determined according to the minimum boost threshold of the boost module.

7. The low-power consumption electric fishing reel control circuit according to claim 4, wherein: the power supply unit further comprises at least one first capacitor, the first end of the first capacitor is grounded, and the second end is electrically connected to the output terminal of the boost module.

8. The low-power consumption electric fishing reel control circuit according to claim 1, wherein: the power consumption of the control unit is not more than 2.7mw.

9. An electric fishing reel, comprising a frame, a spool accommodated in the frame, a handle for rotating the spool, and a motor arranged in the interior of the spool, wherein: further comprising a drive circuit and a low-power consumption electric fishing reel control circuit according to claim 1; the drive circuit can drive the motor to rotate the spool under current drive and generate induced current when the spool drives the motor to rotate; the electric fishing reel control circuit controls the drive circuit to accelerate or brake the motor based on the received judgment signal.

10. A fishing rod for paying out and winding fishing line using the electric fishing reel according to claim 9.

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