Self-starting electric fishing reel control system and electric fishing reel

Abstract

This application provides a self-starting electric fishing reel control system and an electric fishing reel using the control system. The control system includes a control unit and a power supply unit. The control unit includes a main control chip and a speed control module for controlling the rotational speed of the spool of the electric fishing reel. The power supply unit is connected between the DC output terminal of the spool and the power supply terminal of the main control chip. It is used to activate the main control chip when it is in a turned-off state and the voltage output by the spool is greater than the starting voltage, and to convert the voltage output by the spool into the power supply voltage for the main control chip when it is in a turned-on state. The self-starting electric fishing reel control system provided by this application can ensure that the electric fishing reel activates the main control chip and provides stable power to the spool when casting, even without an external power supply.

Description

Technical Field

[0001] This application belongs to the field of electric fishing reel control technology, specifically, it provides a self-starting electric fishing reel control system and an electric fishing reel controlled by the control system. Background Technology

[0002] By controlling the rotational speed of the spool in an electric fishing reel, the casting effect can be effectively improved, and line breakage at the end of the cast can be prevented. Controlling the spool speed of an electric fishing reel is generally achieved using a microprocessor chip and its peripheral circuitry, including speed measurement circuits and rotational speed control circuits.

[0003] Currently, there are several solutions for powering the microprocessor chip in electric fishing reels. For example, a separate battery module can be used, such as various buttonhole batteries, dry cell batteries, or rechargeable batteries, to power the microprocessor chip. However, the addition of the battery module will increase the size and weight of the electric fishing reel spool and the product manufacturing cost. Alternatively, an energy storage element (such as a capacitor) connected to the DC output terminal of the spool can be used to convert the kinetic energy of the spool rotation during casting into electrical energy stored in the energy storage element and powering the microprocessor chip.

[0004] However, while the above-mentioned solution of using spool rotation for energy storage and microprocessor chip power supply can achieve miniaturization and integration of electric fishing reels, the voltage generated by the spool during casting varies rapidly within the range of approximately 0V to 15V. A single voltage management chip cannot meet the requirements for stable output, and may even cause damage due to the input voltage exceeding the chip's capacity. Furthermore, since there is no separate power supply, when the electric fishing reel is not used for a long time, the charge in the energy storage capacitor will gradually be depleted, causing the control unit to shut down. If casting is performed again at this time, the control unit cannot be activated in time if the voltage of the energy storage capacitor does not reach the power supply voltage of the microprocessor chip. For some electric fishing reels using large capacitor power supply, multiple uncontrolled castings may be required before the control unit can be activated. Therefore, it is necessary to improve the existing power supply scheme through the electric fishing reel spool to ensure that the microprocessor chip can be activated when the electric fishing reel is cast for the first time after a long period of inactivity, and that the large voltage fluctuations output by the spool can be converted into a stable chip power supply voltage. Summary of the Invention

[0005] The first aspect of this application provides a self-starting electric fishing reel control system, including a control unit and a power supply unit. The control unit includes a main control chip and a speed control module for controlling the rotational speed of the spool of the electric fishing reel. The power supply unit is connected between the DC output terminal of the spool and the power supply terminal of the main control chip. When the main control chip is in a turned-off state and the voltage output by the spool is greater than the starting voltage, the main control chip is started. When the main control chip is in a started state, the voltage output by the spool is converted into the power supply voltage of the main control chip.

[0006] Preferably, the lower limit of the voltage output by the spool is 0V, and the upper limit is greater than the power supply voltage of the main control chip; the starting voltage is less than the power supply voltage of the main control chip.

[0007] Furthermore, the power supply unit includes a first voltage regulating module, a second voltage regulating module, and a switching circuit; the output terminals of both the first voltage regulating module and the second voltage regulating module are connected to the main control chip.

[0008] When the voltage output by the spool is greater than the start-up voltage but less than the switching voltage, the switching circuit converts the voltage output by the spool into the power supply voltage of the main control chip through the first voltage regulation module, and keeps the second voltage regulation module off. The switching voltage is greater than the start-up voltage but less than the upper limit of the voltage output by the spool.

[0009] When the voltage output by the spool is greater than the switching voltage, the switching circuit converts the voltage output by the spool into the power supply voltage of the main control chip through the second voltage regulation module.

[0010] Furthermore, the switching circuit includes a first switching circuit, a second switching circuit, and a third switching circuit; the second switching circuit is enabled by the voltage output from the spool and the first switching signal, and is used to control the connection and disconnection between the enable terminal and the ground terminal of the first switching circuit. The second switching circuit is only turned on when the voltage output from the spool is greater than the start-up voltage and the first switching signal is not a low-level signal, and is turned off otherwise.

[0011] The first switching circuit is used to control the connection and disconnection between the DC output terminal of the spool and the power supply terminal of the first voltage regulating module. The first switching circuit is turned on when its enable terminal is low and turned off when its enable terminal is high.

[0012] The third switching circuit is enabled by the second switching signal and is used to control the connection and disconnection between the power supply terminal of the second voltage regulating module and the DC output terminal of the spool, or to control the connection and disconnection between the enable terminal of the second voltage regulating module and the ground terminal.

[0013] Preferably, the first switching circuit includes a first switching transistor that is turned on at a low level, with its first end connected to the DC output terminal of the spool and its second end connected to the enable terminal and the power supply terminal of the first voltage regulating module.

[0014] The second switching circuit includes a second switching transistor that is turned on at a high level. Its first end is connected to the enable end of the first switching transistor, and its second end is connected to the ground end. The enable end is connected to the DC output end of the spool and receives the first switching signal.

[0015] Preferably, one end of the third switching circuit is connected to the enable terminal of the second voltage regulating module, and the other end receives the second switching signal; the power supply terminal of the second voltage regulating module is connected to the DC output terminal of the spool.

[0016] Optionally, the third switching circuit includes a third switching transistor that is turned on at a high level, with its first end connected to the power supply terminal of the main control chip and the enable terminal of the second voltage regulation module, and its second end connected to the ground terminal; the power supply terminal of the second voltage regulation module is connected to the DC output terminal of the spool.

[0017] Optionally, the third switching circuit includes a fourth switching transistor that is turned on at a low level, with its first end connected to the DC output terminal of the spool and its second end connected to the power supply terminal of the second voltage regulating module; the enable terminal of the second voltage regulating module is connected to the power supply terminal of the main control chip.

[0018] Preferably, the first switching signal and the second switching signal are output by the main control chip;

[0019] When the main control chip is in the off state, the first switching signal and the second switching signal are floating signals; when the main control chip is in the on state and the voltage output by the spool is less than the switching voltage, the first switching signal and the second switching signal are high-level signals.

[0020] When the main control chip is in the ON state and the voltage output by the spool is greater than the switching voltage, the first switching signal and the second switching signal are low-level signals.

[0021] Preferably, the power supply unit further includes at least one comparison circuit, which outputs a high-level signal when the voltage at the power supply terminal of the first voltage regulating module is less than the switching voltage, and outputs a low-level signal otherwise; the first switching signal and the second switching signal are output from the output terminal of the at least one comparison circuit.

[0022] Preferably, the first switching signal and the second switching signal are the same signal.

[0023] Preferably, it further includes a first diode; the positive terminal of the first diode is connected to the DC output terminal of the spool, and the negative terminal is connected to the first terminal and enable terminal of the first switching transistor, the first terminal and enable terminal of the second switching transistor, and the power supply terminal of the second voltage regulating module.

[0024] Preferably, it further includes a first resistor and a second resistor;

[0025] The first resistor is connected between the cathode of the first diode and the enable terminal of the first switching transistor;

[0026] The second resistor is connected between the negative terminal of the first diode and the enable terminal of the second switch.

[0027] Preferably, it further includes a third resistor, which is connected between the output terminal and the enable terminal of the second voltage regulating module.

[0028] Preferably, the switching voltage is greater than or equal to the power supply voltage of the main control chip and less than the upper limit of the voltage output by the spool.

[0029] Preferably, it further includes a first capacitor, which is connected between the second terminal of the first switching transistor and the ground terminal.

[0030] A second aspect of this application provides an electric fishing reel, including a spool and the aforementioned self-starting electric fishing reel control system; the spool includes a fixed shaft fixedly connected to a fishing rod and a spool rotatably connected to the fixed shaft, the fixed shaft and the spool being provided with mutually cooperating permanent magnets and induction coils, the induction coil outputting a variable voltage induced current through the DC output terminal when the spool rotates relative to the fixed shaft; the spool's rotational speed is controlled by the self-starting electric fishing reel control system.

[0031] The self-starting electric fishing reel control system provided in this application is designed with the power supply unit in mind, taking into account the usage characteristics of the electric fishing reel spool and the variation characteristics of its output voltage. By utilizing the cooperation between multiple switching circuits and voltage regulating modules for boosting and bucking voltage respectively, it can start the main control chip during the first casting process after the main control chip has been shut down due to long-term inactivity. It can also convert the large voltage fluctuations output by the electric fishing reel spool into a stable chip power supply voltage. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the architecture of a self-starting electric fishing reel control system provided according to an embodiment of this application;

[0033] Figure 2 This is a circuit diagram of the power supply unit in Embodiment 1 of this application;

[0034] Figure 3 This is a circuit diagram of the power supply unit in Embodiment 2 of this application;

[0035] Figure 4 This is a circuit diagram of the power supply unit in Embodiment 3 of this application. Detailed Implementation

[0036] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0037] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, an indirect connection via an intermediate medium, or even a connection within two components. Those skilled in the art will readily understand the specific meaning of these terms in this application.

[0038] Figure 1 A schematic diagram of the system architecture of an electric fishing reel according to some preferred embodiments of the present application is shown. As shown, the electric fishing reel includes a spool 100 and a self-starting electric fishing reel control system 200 described later.

[0039] The spool 100 can be any type of electrically controlled spool known to those skilled in the art for speed control based on the principle of electromagnetic induction. It includes at least a set of permanent magnets with different magnetic poles and corresponding multi-phase induction coils. The permanent magnets and induction coils (or induction coils and permanent magnets) are respectively disposed on the fixed shaft and the reel (not shown in the figure). The fixed shaft is fixedly connected to the fishing rod, and the reel is rotatably connected relative to the fixed shaft. When casting the line, the fishing line drives the reel to rotate, and the induction coil generates an induced current by cutting the magnetic field. After rectification, the induced current can be output through its DC output terminal FA (i.e., the hollow circle in the figure).

[0040] Obviously, as the speed of the winding drum changes, the voltage at the DC output terminal FA changes in real time, and its lower limit is 0V when the winding drum is stationary. Due to the different sizes and weights of the winding drum, its maximum speed is different, so the upper limit of the voltage at the DC output terminal FA can reach 10, 12V or even 15V.

[0041] Furthermore, the self-starting electric fishing reel control system 200 includes a power supply unit and a control unit. The power supply unit is connected between the FA terminal and the power supply terminal (solid circle in the figure) of the main control chip in the control unit. It starts the main control chip when it is in the off state and the voltage output by the spool 100 is greater than the starting voltage. When the main control chip is in the started state, it converts the voltage output by the spool into the power supply voltage for the main control chip. Figure 1 The main control chip shown is powered by 3.3V. In some other embodiments, the main control chip may be powered by 5V or other values.

[0042] In addition to the main control chip, the control unit also includes a speed control module. The method of controlling the rotational speed of the spool 100 via the main control chip and the speed control module is known to those skilled in the art. For example, in some specific embodiments, it can be like... Figure 1 As shown, the main control chip determines the optimal rotation speed of the spool 100 by monitoring status signals such as its rotation speed and fishing line tension. It then sends control signals for accelerating or braking the spool to the voltage regulation module. The voltage regulation module sends a PWM signal with an adjustable duty cycle to the electromagnetic coil in the spool 100 to regulate its connection with the power supply capacitor or power-consuming load, thereby accelerating or braking the spool 100. The above-described control method for the spool 100 is known to those skilled in the art. In other specific embodiments, the above-described spool control method can be adaptively adjusted according to actual design specifications such as size and power consumption.

[0043] As analyzed in the background section, after an electric fishing reel has been idle for an extended period, components such as capacitors supplying power to the main control chip may run out of power. In this case, the main control chip will also shut down. If this happens, during the first few casts, the power supply capacitors may not be charged enough to activate the main control chip, resulting in the casting process being uncontrolled by the control unit. Furthermore, if the spool speed is too high, it may exceed the voltage management chip's tolerance, causing component damage. Clearly, a specialized design for the power supply unit is needed, taking into account the characteristics of the electric fishing reel spool's operation and voltage output. This design ensures that even when the main control chip is off, it can be activated simply by casting, and that the significant voltage fluctuations from the spool's output can be converted into a stable chip power supply voltage.

[0044] The implementation method and working principle of the power supply unit will be described in detail below with reference to the accompanying drawings and several specific embodiments of this application.

[0045] Example 1

[0046] Figure 2This is a circuit diagram of the power supply unit provided in specific embodiment 1 of this application. The power supply unit is connected to the FA terminal and the power supply terminal of the main control chip (in... Figure 2 Between (represented by DC3V3), the rotation of the spool is used to achieve self-starting and voltage regulation of the main control chip.

[0047] like Figure 2 As shown, the power supply unit includes a first voltage regulating module U22, a second voltage regulating module LDO1, and a switching circuit. The output terminals VOUT of the first voltage regulating module U22 and OUT of the second voltage regulating module LDO1 are both connected to the power supply terminal of the main control chip. When the voltage output by the spool is greater than the start-up voltage but less than the switching voltage, the switching circuit converts the spool output voltage to the power supply voltage of the main control chip through the first voltage regulating module U22, while keeping the second voltage regulating module LDO1 off (as described below, the second voltage regulating module LDO1 being off can mean that the voltage at its power supply terminal IN has not reached the start-up voltage, or that it is in a non-working state due to the signal received at its enable terminal EN). When the spool output voltage is greater than the switching voltage, the second voltage regulating module LDO1 converts the spool output voltage to the power supply voltage of the main control chip. Clearly, in this embodiment, the upper and lower limits of the spool output voltage and the aforementioned start-up voltage and switching voltage have the following relationship: lower limit of spool output voltage = 0V < start-up voltage < switching voltage < upper limit of spool output voltage.

[0048] [Selection of the first and second voltage regulating modules]

[0049] The first voltage regulating module U22 is responsible for ensuring a stable power supply voltage to the main control chip when the voltage output from the online cup exceeds the start-up voltage but is less than the switching voltage. Obviously, the specific voltage value of the start-up voltage is determined by the technical specifications of the first voltage regulating module. For example, in this embodiment, the first voltage regulating module U22 uses the PFM synchronous boost DC / DC converter HT7733SA, which has a start-up voltage as low as 0.7V and can provide multiple fixed output voltages such as 2.7V, 3.0V, 3.3V, 3.7V or 5V. That is, when the voltage of its power supply terminal LX exceeds 0.7V and its enable terminal CE is high, it can convert the voltage from 0.7V to its upper limit of operating voltage into the 3.3V power supply voltage of the main control chip.

[0050] The second voltage regulation module LDO1 is responsible for stably converting the voltage output by the online cup to the power supply voltage of the main control chip when the voltage exceeds the switching voltage. In this embodiment, the second voltage regulation module LDO1 uses a low dropout linear regulator TPS70933DBVR, which can stably adjust the input voltage in the range of 2.7V to 30V to the output voltage of 3.3V when the enable terminal EN is high.

[0051] To prevent reverse current transmission, a unidirectional diode can preferably be placed between the DC output terminal FA of the inductor and the power supply terminal of each voltage regulator module, for example... Figure 2 The first diode D7 in the diagram obviously requires the voltage drop of the first diode (generally 0.3V to 0.7V) to be added when determining the value of the start-up voltage. That is, there is a potential difference of about 0.3V to 0.7V between the FA terminal and the FA2 terminal (and the IN_DC terminal when the first switch is in the on state) in the diagram. Similarly, when judging whether the switching voltage has been reached by the voltage of the FA terminal and when judging whether the switching voltage has been reached by the voltage of the FA2 terminal (or the IN_DC terminal), there is also a potential difference of about 0.3V to 0.7V between the two cases.

[0052] To ensure continuous power supply to the main control chip, the upper limit of the operating voltage range of the first voltage regulator module U22 needs to overlap with the lower limit of the operating voltage range of the second voltage regulator module LDO1. Therefore, the switching voltage is not a strictly limited value, but can be selected within a certain voltage range. Changing the switching voltage affects the timing of triggering the switching between the first voltage regulator module U22 and the second voltage regulator module LDO1. For example, the switching voltage can be set to be equal to the power supply voltage of the main control chip, such as 3.3V in this embodiment. It can also be less than 3.3V but greater than the lower limit of the operating voltage range of the second voltage regulator module LDO1, such as 2.7V in this embodiment. It can also be greater than 3.3V but not exceeding the upper limit of the voltage regulation of the first voltage regulator module U22.

[0053] [Switching Circuit and Its Working Principle]

[0054] The switching circuit is used to ensure that the first voltage regulating module U22 starts voltage regulation after the voltage output from the condenser exceeds the start-up voltage. Furthermore, as the voltage output from the condenser changes, it switches between the first voltage regulating module U22 and the second voltage regulating module LDO1 when the voltage exceeds or falls below the switching voltage, thereby providing a stable power supply voltage to the main control chip. In this embodiment, the switching circuit includes a first switching circuit, a second switching circuit, and a third switching circuit.

[0055] The second switching circuit is enabled by the voltage output from the spool and the first switching signal, and is used to control the connection and disconnection between the enable terminal and the ground terminal of the first switching circuit. The second switching circuit is only turned on when the voltage output from the spool is greater than the starting voltage and the first switching signal is not a low-level signal, and is turned off otherwise. The first switching circuit is used to control the connection and disconnection between the DC output terminal FA of the spool and the power supply terminal of the first voltage regulating module. The first switching circuit is turned on when its enable terminal is low, and is turned off otherwise. The third switching circuit is enabled by the second switching signal and is used to control the connection and disconnection between the enable terminal and the ground terminal of the second voltage regulating module, or to control the connection and disconnection between the power supply terminal of the second voltage regulating module and the DC output terminal FA of the spool.

[0056] Specifically, such as Figure 2 As shown, the first switching circuit includes a first switching transistor Q11 (in this embodiment, the first switching transistor is a PMOS transistor) that is turned on at a low level. Its first terminal (S pole) is connected to the DC output terminal FA of the spool, and its second terminal (D pole) is connected to the enable terminal CE and the power supply terminal LX of the first voltage regulating module U22. The second switching circuit includes a second switching transistor Q10 (in this embodiment, the second switching transistor is an NMOS transistor) that is turned on at a high level. Its first terminal (D pole) is connected to the enable terminal (G pole) of the first switching transistor Q11, and its second terminal (S pole) is connected to the ground terminal.

[0057] In Embodiment 1 of this application, as Figure 2 As shown, the third switching circuit is a direct-connect signal line. One end of it is connected to the enable terminal EN of the second voltage regulating module LDO1, and the other end receives the second switching signal. At the same time, the power supply terminal IN of the second voltage regulating module LDO1 is connected to the DC output terminal FA of the spool.

[0058] In Embodiment 1 of this application, the first switching signal and the second switching signal can be high and low level signals output from the I / O pins of the main control chip. The voltage at the FA terminal, the voltage at the FA2 terminal, or the voltage at the IN_DC terminal can be compared with the switching voltage (e.g., 3.3V) by components such as comparators. After the comparison result output by the comparator is input to the main control chip, the main control chip controls the switching of the voltage regulation module by outputting the first switching signal and the second switching signal.

[0059] Obviously, when the electric fishing reel is not used for a long time, causing the main control chip to shut down, the pins that output the first switching signal and the second switching signal are both in a floating state. At this time, the main control chip cannot control the voltage regulation module. Therefore, in the embodiment of this application, the on / off state of the second switching transistor Q10 is determined by the first switching signal and the voltage output by the spool, thereby ensuring that the main control chip can be started by casting the line for the first time when the main control chip is off.

[0060] like Figure 2 As shown, the switching circuit also includes a first resistor R2, a second resistor R12, a third resistor R16, etc. Each of the above resistors respectively realizes the voltage pull-up and pull-down to ensure reliable switching of the on / off state of each switch and the enable state of each voltage regulation module. The connection method and function of the above resistors are known to those skilled in the art and will not be described in detail here.

[0061] By using the aforementioned multiple switching transistors and comparator circuits, the main control chip can be started using the electrical energy generated by the rotation of the spool, and its variable output voltage can be converted into a fixed supply voltage for the main control chip. The specific implementation principle is as follows:

[0062] 1) When the spool of the electric fishing reel is stationary, the voltage at the FA terminal is 0V. At this time, the enable terminal of the second switch Q10 is in a floating state, the second switch Q10 is cut off, and no current flows through the first switch Q11 and the second switch Q10. At this time, the main control chip can be powered by the energy storage capacitor. After the charge of the energy storage capacitor is exhausted, it enters the off state.

[0063] 2) As the fishing rod is cast (this casting can be one of multiple castings or the first casting after the electric fishing rod has been idle for a long time), the voltage at the FA terminal rises from 0V. When it exceeds the turn-on voltage of the second switch Q10, the second switch Q10 is turned on. At this time, the enable terminal of the first switch Q11 is grounded, thus connecting the FA terminal with the enable terminal and the power supply terminal of the first voltage regulator module. Since the voltage at the FA terminal does not reach the operating voltage range of the first voltage regulator module U22 and the second voltage regulator module LDO1, they are both in the off state.

[0064] 3) When the voltage at the FA terminal continues to rise above the start-up voltage of the first voltage regulating module U22, the first voltage regulating module U22 starts to boost the voltage at the FA terminal and continuously outputs a 3.3V voltage through its output terminal, thereby starting the main control chip. After the main control chip starts, it begins to monitor the voltage output by the spool and takes over the control of the switching circuit through the first switching signal and the second switching signal. When the voltage at the FA terminal or the input voltage of the first voltage regulating module U22 is less than the switching voltage, the first switching signal remains at a high level, the second switching signal remains at a low level, the first switching transistor Q11 and the second switching transistor Q10 continue to be turned on, and the enable terminal of the first voltage regulating module U22 remains at a high level. The first voltage regulating module U22 remains in the working state, and the second voltage regulating module LDO1 remains in the off state.

[0065] 4) When the voltage at the FA terminal continues to rise above the switching voltage, the first switching signal is switched to a low level, causing the second switching transistor Q10 to be turned off, and further causing the first switching transistor Q11 to be in a high-level off state. At this time, the first voltage regulation module U22 is turned off; at the same time, the second switching signal is switched to a high level, and the enable terminal potential of the second voltage regulation module LDO1 is pulled high. At this time, the voltage at the FA terminal has exceeded the lower limit of the operating voltage range of the second voltage regulation module LDO1. Therefore, the second voltage regulation module LDO1 enters the working mode and continuously supplies power to the main control chip through its output terminal, thereby realizing the conversion from boost output to buck output.

[0066] 5) During the process of the electric fishing reel spool speed decreasing, the switching order of the above-mentioned switching transistors and the working mode switching of the first voltage regulating module and the second voltage regulating module is the opposite of that during the process of speed increase, and will not be repeated here.

[0067] In addition, such as Figure 2 As shown, in this embodiment, the voltage switching circuit also includes a first capacitor C14, which is connected between the second terminal of the first switching transistor and the ground terminal. After the first switching transistor is turned on, it is continuously charged through the FA terminal, thereby providing power to the main control chip for a period of time after the fishing reel is stationary.

[0068] Example 2

[0069] Figure 3 In another embodiment of the switching circuit, besides the first switching transistor Q18 constituting the first switching circuit and the second switching transistor Q16 constituting the second switching circuit being similar to those in Embodiment 1, the difference between this embodiment and Embodiment 1 is that the third switching circuit is composed of a third switching transistor Q19. Specifically, the third switching transistor Q19 is a high-level conducting (NMOS transistor), its first terminal (D pole) is connected to the power supply terminal of the main control chip and the enable terminal EN of the second voltage regulation module LDO1, its second terminal (S pole) is connected to the ground terminal, and the enable terminal (G pole) is used to receive the second switching signal. At the same time, the DC output terminal FA of the spool is connected to the power supply terminal IN of the second voltage regulation module after passing through the first diode D7. (It should be noted that...) Figure 3 The illustrated embodiment includes two first diodes, D7 and D8. The function of these two first diodes is essentially the same as in Embodiment 1.

[0070] In addition, in this embodiment, the first voltage regulating module U23 is a boost DC-DC converter QX2304L33F. It can start when the voltage of its power supply terminal LX exceeds 0.9V, and when its enable terminal EN is high, it can stably boost the voltage in the range of 0.9 to 3.3V to 3.3V.

[0071] use Figure 3 When the third switch Q19, which is turned on at a high level, controls the working state of the second voltage regulation module LDO1, the first switching signal can rise or fall synchronously with the second switching signal. Therefore, in this embodiment, the first switching signal and the second switching signal can be output from the same pin of the main control chip, thereby reducing the computational load of the main control chip and effectively simplifying the circuit.

[0072] In addition, in this embodiment, a fourth switch (not shown in the figure) with a low-level conduction can also be used to control the connection between the FA terminal and the power supply terminal IN of the second voltage regulation module LDO1. Specifically, the first terminal of the fourth switch can be connected to the DC output terminal FA of the spool, and its second terminal can be connected to the power supply terminal IN of the second voltage regulation module LDO1. Its enable terminal is used to receive the second switching signal, and the enable terminal EN of the second voltage regulation module LDO1 is connected to the power supply terminal of the main control chip. Under this circuit connection method, the second switching signal can still be consistent with the first switching signal.

[0073] Example 3

[0074] Figure 4 This is a schematic diagram of the switching circuit provided in Embodiment 3 of this application. The difference between this embodiment and the previous embodiment is that it provides another switching signal generation mechanism: the second switching signal is the same as the first switching signal, both of which are output by a comparison circuit. The comparison circuit outputs a high-level signal when the voltage at the power supply terminal LX of the first voltage regulating module U23 (or the voltage output by the spool) is less than the switching voltage, and outputs a low-level signal otherwise.

[0075] Specifically, such as Figure 4 As shown, the comparison circuit includes a first voltage comparator U25, which can be powered through either the FA terminal or the FA2 terminal. Its positive terminal is connected to the power supply terminal of the main control chip (i.e., the switching voltage equals the power supply voltage of the main control chip), and its negative terminal is connected to the power supply terminal LX of the first voltage regulation module U23 (or it can be connected to the FA terminal). Using discrete components to generate the switching signal separates the power supply control of the main control chip from the performance of the main control chip, ensuring stable switching and further freeing up the computing resources of the main control chip.

[0076] In some alternative embodiments, the input terminal of the first voltage regulating module can be connected to a rheostat or voltage divider circuit, and then output to the negative terminal of the first comparator. In this case, the switching voltage will be increased to the load supply voltage divided by the voltage division ratio of the rheostat or voltage divider circuit. This method can achieve flexible setting of the switching voltage.

[0077] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A self-starting electric fishing reel control system, comprising a control unit and a power supply unit, wherein the control unit includes a main control chip and a speed control module, used to control the rotational speed of the spool of the electric fishing reel, characterized in that: The power supply unit is connected between the DC output terminal of the spool and the power supply terminal of the main control chip. When the main control chip is in the off state and the voltage output by the spool is greater than the start-up voltage, the main control chip is started. When the main control chip is in the start-up state, the voltage output by the spool is converted into the power supply voltage of the main control chip. The power supply unit includes a first voltage regulating module, a second voltage regulating module, and a switching circuit; The output terminals of both the first voltage regulating module and the second voltage regulating module are connected to the main control chip; When the voltage output by the spool is greater than the start-up voltage but less than the switching voltage, the switching circuit converts the voltage output by the spool into the power supply voltage of the main control chip through the first voltage regulation module, and keeps the second voltage regulation module off. The switching voltage is greater than the start-up voltage but less than the upper limit of the voltage output by the spool. When the voltage output by the spool is greater than the switching voltage, the switching circuit converts the voltage output by the spool into the power supply voltage of the main control chip through the second voltage regulation module. The switching circuit includes a first switching circuit, a second switching circuit, and a third switching circuit; The second switching circuit is enabled by the voltage output from the spool and the first switching signal, and is used to control the connection and disconnection between the enable terminal and the ground terminal of the first switching circuit. The second switching circuit is turned on only when the voltage output from the spool is greater than the start-up voltage and the first switching signal is not a low-level signal, and turned off otherwise. The first switching circuit is used to control the connection and disconnection between the DC output terminal of the spool and the power supply terminal of the first voltage regulating module. The first switching circuit is turned on when its enable terminal is low and turned off when its enable terminal is high. The third switching circuit is enabled by the second switching signal and is used to control the connection and disconnection between the power supply terminal of the second voltage regulating module and the DC output terminal of the spool, or to control the connection and disconnection between the enable terminal of the second voltage regulating module and the ground terminal.

2. The self-starting electric fishing reel control system according to claim 1, characterized in that: The lower limit of the voltage output by the spool is 0V, and the upper limit is greater than the power supply voltage of the main control chip. The startup voltage is lower than the power supply voltage of the main control chip.

3. The self-starting electric fishing reel control system according to claim 1, characterized in that: The first switching circuit includes a first switching transistor that is turned on at a low level, with its first end connected to the DC output terminal of the spool and its second end connected to the enable terminal and the power supply terminal of the first voltage regulating module. The second switching circuit includes a second switching transistor that is turned on at a high level. Its first end is connected to the enable end of the first switching transistor, and its second end is connected to the ground end. The enable end is connected to the DC output end of the spool and receives the first switching signal.

4. The self-starting electric fishing reel control system according to claim 1, characterized in that: One end of the third switching circuit is connected to the enable terminal of the second voltage regulating module, and the other end receives the second switching signal; The power supply terminal of the second voltage regulating module is connected to the DC output terminal of the spool.

5. The self-starting electric fishing reel control system according to claim 1, characterized in that: The third switching circuit includes a third switching transistor that is turned on at a high level. Its first end is connected to the power supply terminal of the main control chip and the enable terminal of the second voltage regulation module, and its second end is connected to the ground terminal. The power supply terminal of the second voltage regulating module is connected to the DC output terminal of the spool.

6. The self-starting electric fishing reel control system according to claim 1, characterized in that: The third switching circuit includes a fourth switching transistor that is turned on at a low level, with its first end connected to the DC output terminal of the spool and its second end connected to the power supply terminal of the second voltage regulating module. The enable terminal of the second voltage regulation module is connected to the power supply terminal of the main control chip.

7. The self-starting electric fishing reel control system according to claim 1, characterized in that: The first switching signal and the second switching signal are output by the main control chip; When the main control chip is in the off state, the first switching signal and the second switching signal are floating signals; When the main control chip is in the ON state and the voltage output by the spool is less than the switching voltage, the first switching signal and the second switching signal are high-level signals. When the main control chip is in the ON state and the voltage output by the spool is greater than the switching voltage, the first switching signal and the second switching signal are low-level signals.

8. The self-starting electric fishing reel control system according to claim 1, characterized in that: The power supply unit further includes at least one comparison circuit, which outputs a high-level signal when the voltage at the power supply terminal of the first voltage regulation module is less than the switching voltage, and outputs a low-level signal otherwise. The first switching signal and the second switching signal are output from the output terminal of the at least one comparison circuit.

9. The self-starting electric fishing reel control system according to any one of claims 5 to 8, characterized in that: The first switching signal and the second switching signal are the same signal.

10. The self-starting electric fishing reel control system according to claim 3, characterized in that: It also includes a first diode; The positive terminal of the first diode is connected to the DC output terminal of the spool, and the negative terminal is connected to the first terminal and enable terminal of the first switching transistor, the first terminal and enable terminal of the second switching transistor, and the power supply terminal of the second voltage regulating module.

11. The self-starting electric fishing reel control system according to claim 10, characterized in that: It also includes a first resistor and a second resistor; The first resistor is connected between the negative terminal of the first diode and the enable terminal of the first switching transistor; The second resistor is connected between the negative terminal of the first diode and the enable terminal of the second switch.

12. The self-starting electric fishing reel control system according to claim 10, characterized in that: It also includes a third resistor, which is connected between the output terminal and the enable terminal of the second voltage regulating module.

13. The self-starting electric fishing reel control system according to claim 1, characterized in that: The switching voltage is greater than or equal to the power supply voltage of the main control chip and less than the upper limit of the voltage output by the spool.

14. The self-starting electric fishing reel control system according to claim 3, characterized in that: It also includes a first capacitor, which is connected between the second terminal of the first switching transistor and the ground terminal.

15. An electric fishing reel, characterized in that: Includes the spool and the self-starting electric fishing reel control system as described in claim 1; The spool includes a fixed shaft fixedly connected to the fishing rod and a spool rotatably connected to the fixed shaft. The fixed shaft and the spool are provided with mutually cooperating permanent magnets and induction coils. When the spool rotates relative to the fixed shaft, the induction coil outputs a variable voltage induced current through the DC output terminal. The spool's rotation speed is controlled by the self-starting electric fishing reel control system.

Images