Control circuit for underwater propeller

Abstract

The utility model discloses a control circuit for an underwater propeller, which relates to the technical field of underwater propeller control, and comprises a propeller main body and a remote controller, and the propeller main body is electrically connected with the remote controller through a communication module; the propeller main body comprises a control module and a management module, the control module is electrically connected with the management module, the remote controller comprises a remote control module and a main control module, and the remote control module is electrically connected with the main control module. According to the utility model, the control module is matched with the remote controller, so that the closing operation of the relay RL1 and the duty ratio adjustment of the MOS can be controlled, and the output of the motor end can be effectively controlled, and when the MOS is broken down, the relay RL1 cuts off the power supply of the motor, stops the working current of the motor, and protects the safety of horses and operators.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater propeller control, in particular to a control circuit for an underwater propeller. Background Art

[0002] Underwater propulsion systems, also known as underwater vehicles, are important underwater technology devices used to provide power and propulsion in underwater environments. They utilize electric motors to drive propellers to generate thrust for underwater robots. Small underwater propulsion systems are typically used for diving. Traditional ship propulsion systems are fueled by oil, which is not only noisy but also produces harmful substances such as smoke.

[0003] In order to take into account the needs of outdoor adventure enthusiasts, especially those who like to play on water such as streams and lakes, a propeller that can be mounted on a private, portable airboat has been designed in the existing technology. This allows airboat beginners and enthusiasts who are not physically strong to travel longer distances. A large-capacity and high-voltage battery is used to ensure the endurance and power of the underwater propeller, which also allows experienced people to have a deeper understanding of nature, and provides more sufficient power, making navigation more efficient.

[0004] However, most underwater thrusters in the existing technology cannot be remotely controlled and speed-adjusted during use. Even if they can be remotely controlled and speed-adjusted, they cannot be waterproofed, resulting in water ingress when working above or below the water, causing short-circuit hazards to the circuit board.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0006] In view of the problems in the related art, the present invention proposes a control circuit for an underwater thruster to overcome the above technical problems existing in the existing related art.

[0007] To this end, the specific technical solutions adopted in this utility model are as follows:

[0008] A control circuit for an underwater thruster comprises a thruster body and a remote controller, wherein the thruster body and the remote controller are electrically connected via a communication module;

[0009] The thruster body includes a control module and a management module, and the control module and the management module are electrically connected. The remote controller includes a remote control module and a main control module, and the remote control module and the main control module are electrically connected.

[0010] Furthermore, the communication module includes a transceiver U4, a capacitor C9, a capacitor C19, a resistor R14, a capacitor C18, a diode TVS2, a filter RC4, a diode TVS1, a filter RC3, an interface RS1, and an interface RS2;

[0011] The eighth pin of the transceiver U4 is connected to one end of the capacitor C9, the other end of the capacitor C9 is grounded, the seventh pin of the transceiver U4 is respectively connected to the capacitor C19, the diode TVS1, the resistor R14, and one end of the filter RC3, the other end of the capacitor C19 is grounded, the other end of the diode TVS1 is grounded, the other end of the filter RC3 is respectively connected to the first pin of the interface RS1 and the first pin of the interface RS2, the second pin of the interface RS1 is respectively connected to the second pin of the interface RS2 and one end of the filter RC4;

[0012] The other end of the filter RC4 is respectively connected to one end of the diode TVS2, one end of the capacitor C18, one end of the resistor R14 and the sixth pin of the transceiver U4. The other end of the diode TVS2 is grounded, the other end of the capacitor C18 is grounded, and the fifth pin of the transceiver U4 is grounded.

[0013] Furthermore, the control module includes a resistor R20, a capacitor C21, a resistor R22, a motor connector MD, a transistor Q3, a diode D3, a relay RL1, a fuse F1, a resistor R21, a light-emitting diode LED4, a capacitor C1, a diode D2, a capacitor C4, an inductor LX, a field-effect transistor Q1, a transistor Q4, a resistor R23, a resistor R2, a light-emitting diode LED3, a resistor R13, a transistor Q2, a diode D4, a resistor R15, a resistor R11, a resistor R1, and a capacitor C13;

[0014] One end of the resistor R20 is connected to the base of the transistor Q3, the collector of the transistor Q3 is connected to the diode D3 and one end of the relay RL1 respectively, the emitter of the transistor Q3 is grounded, the other end of the resistor R20 is connected to one end of the capacitor C21 and one end of the resistor R22 respectively, and the other end of the capacitor C21 is grounded;

[0015] The other end of the relay RL1 is connected to the fuse F1, the other end of the fuse F1 is connected to one end of the resistor R21 and one end of the lithium battery BAT1, the other end of the lithium battery BAT1 is grounded, the other end of the resistor R21 is connected to one end of the light-emitting diode LED4, the other end of the light-emitting diode LED4 is respectively connected to the third pin of the inductor LX, the diode D2, one end of the capacitor C1, and the relay RL1, the other end of the capacitor C1 is grounded, the fourth pin of the inductor LX is connected to the first pin of the motor connector MD and one end of the capacitor C4, the second pin of the motor connector MD is respectively connected to the first pin of the inductor LX, the second pin of the inductor LX, the other end of the capacitor C4, the other end of the diode D2, and the drain of the field-effect transistor Q1;

[0016] The other end of resistor R22 is respectively connected to one end of resistor R23, the gate of field-effect transistor Q1, one end of resistor R15, and one end of diode D4, with the other end of diode D4 being grounded. The source of field-effect transistor Q1 is respectively connected to the other end of resistor R15, resistor R11, and one end of resistor R1, with the other end of resistor R1 being grounded. The other end of resistor R11 is connected to one end of capacitor C13, with the other end of capacitor C13 being grounded. The other end of diode D4 is grounded.

[0017] The other end of the resistor R23 is connected to the collector of the transistor Q4, the base of the transistor Q4 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the collector of the transistor Q2, the emitter of the transistor Q2 is grounded, the base of the transistor Q2 is connected to one end of the light-emitting diode LED3, and the other end of the light-emitting diode LED3 is connected to one end of the resistor R13.

[0018] Furthermore, the management module includes a transistor Q5, a resistor R17, a resistor R18, a capacitor C20, a filter RC1, a transistor Q6, a resistor R19, a resistor R3, a resistor R4, a resistor R5, a resistor R8, a capacitor C12, a capacitor C2, a chip U2, a capacitor C5, a resistor R7, a resistor R6, a capacitor C16, a capacitor C3, an inductor L1, a diode D1, a filter RC2, a resistor R9, a capacitor C6, a light-emitting diode LED1, a voltage regulator U5, a capacitor C11, a resistor R16, a capacitor C10, and a relay U3;

[0019] The collector of transistor Q5 is connected to one end of filter RC1, the base of transistor Q5 is connected to one end of resistor R17, the other end of resistor R17 is connected to one end of resistor R18 and capacitor C20, respectively, and the other end of capacitor C20 is grounded. The other end of resistor R18 is connected to the collector of transistor Q6, the emitter of transistor Q6 is grounded, and the base of transistor Q6 is connected to resistor R19.

[0020] The other end of the filter RC1 is connected to the resistor R3, one end of the capacitor C2, one end of the capacitor C5, and the first pin of the chip U2. The other end of the resistor R3 is connected to one end of the resistor R4. The other end of the resistor R4 is connected to one end of the resistor R5 and one end of the resistor R8. The other end of the resistor R5 is grounded. The other end of the resistor R8 is connected to one end of the capacitor C12. The other end of the capacitor C12 is grounded.

[0021] The other end of capacitor C2 is respectively connected to the eighth, seventh, sixth, fifth, ninth, and fourth pins of chip U2 and are grounded. The third pin of chip U2 is respectively connected to one end of resistor R7, capacitor C16, and resistor R6. The other end of resistor R7 is grounded. The other end of capacitor C16 is respectively connected to one end of inductor L1, capacitor C3, and filter RC2. The other end of capacitor C3 is grounded. The other end of inductor L1 is respectively connected to one end of diode D1 and the second pin of chip U2. The other end of diode D1 is grounded. The other end of capacitor C5 is grounded.

[0022] The other end of the filter RC2 is respectively connected to the resistor R9, one end of the capacitor C6 and the second pin of the voltage regulator U5, the other end of the capacitor C6 is grounded, the other end of the resistor R9 is connected to one end of the light-emitting diode LED1, the other end of the light-emitting diode LED1 is grounded, the first pin of the voltage regulator U5 is grounded, the third pin of the voltage regulator U5 is respectively connected to the capacitor C11 and one end of the resistor R16, the other end of the resistor R16 is connected to the second pin of the relay U3, the other end of the capacitor C11 is grounded, the first pin of the relay U3 is connected to the capacitor C10, and the other end of the capacitor C10 is grounded, and the third pin of the relay U3 is grounded.

[0023] Furthermore, the remote control module includes an antenna connector ANT, a network module RF, a capacitor C17, a filter RC5, a capacitor C8 and a connector H;

[0024] The first pin of the network module RF is connected to one end of the capacitor C17 and grounded, the second pin of the network module RF is respectively connected to the other end of the capacitor C17 and one end of the filter RC5, the other end of the filter RC5 is respectively connected to one end of the capacitor C8 and the first pin of the connector H, the other end of the capacitor C8 is grounded, and the second pin of the connector H is grounded; the first pin of the antenna connector ANT is connected to the twelfth pin of the network module RF and grounded, the second pin of the antenna connector ANT is connected to the eleventh pin of the network module RF, and the third pin of the antenna connector ANT is connected to the tenth pin of the network module RF and grounded.

[0025] Furthermore, the main control module includes a chip U1, a capacitor C7, a resistor R10 and a light-emitting diode LED2; the first pin of the chip U1 is grounded, the twenty-fourth pin of the chip U1 is connected to one end of the capacitor C7, the other end of the capacitor C7 is grounded, the thirteenth pin of the chip U1 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to one end of the light-emitting diode LED2, and the other end of the light-emitting diode LED2 is grounded.

[0026] The beneficial effects of the utility model are:

[0027] 1. The utility model can realize remote control of the propeller body by setting a remote controller when in use. At the same time, according to the design of the waterproof treatment structure, it can ensure that the circuit board will not be damaged by short circuit when working above and below water.

[0028] 2. The present invention cooperates with the remote control by setting a control module to control the closing operation of the relay RL1 and the duty cycle adjustment of the MOS. It adopts PWM to adjust the MOS field effect transistor Q1, thereby effectively controlling the output of the motor end. When the MOS field effect transistor Q1 breaks down, the relay RL1 can cut off the power supply to the motor and stop the motor working current, thereby protecting the safety of the motor and the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a principle block diagram of a control circuit for an underwater thruster according to an embodiment of the present utility model;

[0031] Figure 2 This is a circuit diagram of a communication module in a control circuit for an underwater thruster according to an embodiment of the present utility model;

[0032] Figure 3 This is a circuit diagram of a control module in a control circuit for an underwater thruster according to an embodiment of the present utility model;

[0033] Figure 4 This is a circuit diagram of a management module in a control circuit for an underwater thruster according to an embodiment of the present utility model;

[0034] Figure 5 This is a circuit diagram of a remote control module in a control circuit for an underwater thruster according to an embodiment of the present utility model;

[0035] Figure 6 This is a circuit diagram of a main control module in a control circuit for an underwater thruster according to an embodiment of the present utility model;

[0036] Figure 7 This is a schematic diagram of the connection of a varistor in a control circuit for an underwater thruster according to an embodiment of the present utility model;

[0037] Figure 8 The present invention is a circuit diagram of a key switch in a control circuit of an underwater thruster according to an embodiment of the present invention.

[0038] In the picture:

[0039] 1. Thruster body; 101. Control module; 102. Management module; 2. Remote controller; 201. Remote control module; 202. Main control module; 3. Communication module. DETAILED DESCRIPTION

[0040] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0041] According to an embodiment of the present invention, a control circuit for an underwater thruster is provided.

[0042] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-8 As shown, the control circuit for an underwater thruster according to an embodiment of the present utility model includes a thruster body 1 and a remote controller 2, and the thruster body 1 and the remote controller 2 are electrically connected via a communication module 3;

[0043] The thruster body 1 includes a control module 101 and a management module 102, and the control module 101 and the management module 102 (with power management and speed detection functions) are electrically connected. The remote control 2 includes a remote control module 201 and a main control module 202, and the remote control module 201 and the main control module 202 are electrically connected.

[0044] In this embodiment, the communication module 3 includes a transceiver U4, a capacitor C9, a capacitor C19, a resistor R14, a capacitor C18, a diode TVS2, a filter RC4, a diode TVS1, a filter RC3, an interface RS1, and an interface RS2;

[0045] The eighth pin of the transceiver U4 is connected to one end of the capacitor C9, the other end of the capacitor C9 is grounded, the seventh pin of the transceiver U4 is respectively connected to the capacitor C19, the diode TVS1, the resistor R14, and one end of the filter RC3, the other end of the capacitor C19 is grounded, the other end of the diode TVS1 is grounded, the other end of the filter RC3 is respectively connected to the first pin of the interface RS1 and the first pin of the interface RS2, the second pin of the interface RS1 is respectively connected to the second pin of the interface RS2 and one end of the filter RC4;

[0046] The other end of the filter RC4 is respectively connected to one end of the diode TVS2, one end of the capacitor C18, one end of the resistor R14 and the sixth pin of the transceiver U4. The other end of the diode TVS2 is grounded, the other end of the capacitor C18 is grounded, and the fifth pin of the transceiver U4 is grounded.

[0047] It should be noted that MAX485 is a low-power transceiver U4. This IC includes a driver and a receiver, which can communicate with RS-485 and RS-422, and can transmit up to 2.5Mbps. This communication solution selects RS-485 to collect motor speed and battery power data. After processing, it is displayed on the remote control panel with an LED light. After pairing is completed, remote control can be used for remote control.

[0048] In this embodiment, the control module 101 includes a resistor R20, a capacitor C21, a resistor R22, a motor connector MD, a transistor Q3, a diode D3, a relay RL1, a fuse F1, a resistor R21, a light-emitting diode LED4, a capacitor C1, a diode D2, a capacitor C4, an inductor LX, a field-effect transistor Q1, a transistor Q4, a resistor R23, a resistor R2, a light-emitting diode LED3, a resistor R13, a transistor Q2, a diode D4, a resistor R15, a resistor R11, a resistor R1, and a capacitor C13;

[0049] One end of the resistor R20 is connected to the base of the transistor Q3, the collector of the transistor Q3 is connected to the diode D3 and one end of the relay RL1 respectively, the emitter of the transistor Q3 is grounded, the other end of the resistor R20 is connected to one end of the capacitor C21 and one end of the resistor R22 respectively, and the other end of the capacitor C21 is grounded;

[0050] The other end of the relay RL1 is connected to the fuse F1, the other end of the fuse F1 is connected to one end of the resistor R21 and one end of the lithium battery BAT1, the other end of the lithium battery BAT1 is grounded, the other end of the resistor R21 is connected to one end of the light-emitting diode LED4, the other end of the light-emitting diode LED4 is respectively connected to the third pin of the inductor LX, the diode D2, one end of the capacitor C1, and the relay RL1, the other end of the capacitor C1 is grounded, the fourth pin of the inductor LX is connected to the first pin of the motor connector MD and one end of the capacitor C4, the second pin of the motor connector MD is respectively connected to the first pin of the inductor LX, the second pin of the inductor LX, the other end of the capacitor C4, the other end of the diode D2, and the drain of the field-effect transistor Q1;

[0051] The other end of resistor R22 is respectively connected to one end of resistor R23, the gate of field-effect transistor Q1, one end of resistor R15, and one end of diode D4, with the other end of diode D4 being grounded. The source of field-effect transistor Q1 is respectively connected to the other end of resistor R15, resistor R11, and one end of resistor R1, with the other end of resistor R1 being grounded. The other end of resistor R11 is connected to one end of capacitor C13, with the other end of capacitor C13 being grounded. The other end of diode D4 is grounded.

[0052] The other end of the resistor R23 is connected to the collector of the transistor Q4, the base of the transistor Q4 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the collector of the transistor Q2, the emitter of the transistor Q2 is grounded, the base of the transistor Q2 is connected to one end of the light-emitting diode LED3, and the other end of the light-emitting diode LED3 is connected to one end of the resistor R13.

[0053] It should be noted that the control module 101 is controlled by a wireless remote controller, and the operation is free and unconstrained. When the switch button of the remote controller (such as Figure 8 As shown), the single chip computer sends a signal, the PWM controls the field effect tube Q1 to adjust the motor current, and controls the relay RL1 to close, so that the motor connector MD end has an effective output, and when the switch button is pressed again, the relay RL1 is disconnected, and the output can be cut off. When the MOS is broken down, the relay RL1 can cut off the power supply to the motor connector MD, stop the working current of the motor connector MD, and protect the motor connector MD. The motor connector MD output also has current detection, and the circuit output can be cut off in time when a fault or overload occurs. When the motor current stops, the coil itself will generate an induced electromotive force. Therefore, a capacitor C4 and a diode D2 are connected in parallel at both ends of the motor to protect the circuit when the motor stops being powered.

[0054] In this embodiment, the management module 102 includes a transistor Q5, a resistor R17, a resistor R18, a capacitor C20, a filter RC1, a transistor Q6, a resistor R19, a resistor R3, a resistor R4, a resistor R5, a resistor R8, a capacitor C12, a capacitor C2, a chip U2, a capacitor C5, a resistor R7, a resistor R6, a capacitor C16, a capacitor C3, an inductor L1, a diode D1, a filter RC2, a resistor R9, a capacitor C6, a light-emitting diode LED1, a voltage regulator U5 (HT7333), a capacitor C11, a resistor R16, a capacitor C10, and a relay U3.

[0055] The collector of transistor Q5 is connected to one end of filter RC1, the base of transistor Q5 is connected to one end of resistor R17, the other end of resistor R17 is connected to one end of resistor R18 and capacitor C20, respectively, and the other end of capacitor C20 is grounded. The other end of resistor R18 is connected to the collector of transistor Q6, the emitter of transistor Q6 is grounded, and the base of transistor Q6 is connected to resistor R19.

[0056] The other end of the filter RC1 is connected to the resistor R3, one end of the capacitor C2, one end of the capacitor C5, and the first pin of the chip U2. The other end of the resistor R3 is connected to one end of the resistor R4. The other end of the resistor R4 is connected to one end of the resistor R5 and one end of the resistor R8. The other end of the resistor R5 is grounded. The other end of the resistor R8 is connected to one end of the capacitor C12. The other end of the capacitor C12 is grounded.

[0057] The other end of capacitor C2 is respectively connected to the eighth, seventh, sixth, fifth, ninth, and fourth pins of chip U2 and are grounded. The third pin of chip U2 is respectively connected to one end of resistor R7, capacitor C16, and resistor R6. The other end of resistor R7 is grounded. The other end of capacitor C16 is respectively connected to one end of inductor L1, capacitor C3, and filter RC2. The other end of capacitor C3 is grounded. The other end of inductor L1 is respectively connected to one end of diode D1 and the second pin of chip U2. The other end of diode D1 is grounded. The other end of capacitor C5 is grounded.

[0058] The other end of the filter RC2 is respectively connected to the resistor R9, one end of the capacitor C6 and the second pin of the voltage regulator U5, the other end of the capacitor C6 is grounded, the other end of the resistor R9 is connected to one end of the light-emitting diode LED1, the other end of the light-emitting diode LED1 is grounded, the first pin of the voltage regulator U5 is grounded, the third pin of the voltage regulator U5 is respectively connected to the capacitor C11 and one end of the resistor R16, the other end of the resistor R16 is connected to the second pin of the relay U3, the other end of the capacitor C11 is grounded, the first pin of the relay U3 is connected to the capacitor C10, and the other end of the capacitor C10 is grounded, and the third pin of the relay U3 is grounded.

[0059] It should be explained that the battery terminal voltage in the management module 102 is 42V, which is stepped down to 12V and then stepped down to 3.3V by the HT7333. The 12V is used to power the motor drive circuit, and the 3.3V is used to power the microcontroller and the communication module 3.

[0060] In this embodiment, the remote control module 201 includes an antenna connector ANT, a network module RF, a capacitor C17, a filter RC5, a capacitor C8 and a connector H;

[0061] The first pin of the network module RF is connected to one end of the capacitor C17 and grounded, the second pin of the network module RF is respectively connected to the other end of the capacitor C17 and one end of the filter RC5, the other end of the filter RC5 is respectively connected to one end of the capacitor C8 and the first pin of the connector H, the other end of the capacitor C8 is grounded, and the second pin of the connector H is grounded; the first pin of the antenna connector ANT is connected to the twelfth pin of the network module RF and grounded, the second pin of the antenna connector ANT is connected to the eleventh pin of the network module RF, and the third pin of the antenna connector ANT is connected to the tenth pin of the network module RF and grounded.

[0062] It should be explained that there are three control buttons in the remote control module 201, which are respectively for controlling the motor on and off, increasing the motor speed gear, and decreasing the motor speed gear. These three buttons are mounted on the main 2 board of the remote control to facilitate continued wireless remote control.

[0063] In this embodiment, the main control module 202 includes a chip U1, a capacitor C7, a resistor R10 and a light-emitting diode LED2; the first pin of the chip U1 is grounded, the twenty-fourth pin of the chip U1 is connected to one end of the capacitor C7, the other end of the capacitor C7 is grounded, the thirteenth pin of the chip U1 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to one end of the light-emitting diode LED2, and the other end of the light-emitting diode LED2 is grounded.

[0064] It should be explained that the mainboard button S1 in the main control module 202 is a pairing button, which can be paired with the remote control 2 by pressing it.

[0065] like Figure 7 and Figure 8 As shown, the main control module 202 also includes a capacitor C14, a resistor R12, a capacitor C15 and a varistor T, one end of the resistor R12 is connected to one end of the capacitor C14, the other end of the capacitor C14 is grounded, the other end of the resistor R12 is respectively connected to one end of the capacitor C15 and one end of the varistor T and grounded, and Figure 8 Pushbutton switch shown.

[0066] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0067] In actual application, after the remote control 2 is turned on, it is paired with the thruster body 1. When the pairing is successful, the remote control 2 can be used to remotely control the thruster within a certain distance to achieve remote control, and the speed can be adjusted in multiple gears. Both are structurally waterproof to prevent water from entering when working above and below the water, causing hazards such as short circuits to the circuit board.

[0068] In summary, with the aid of the above-mentioned technical solution of the present invention, the present invention can remotely control the thruster body 1 by providing a remote controller 2 during use. At the same time, according to the design of the waterproof treatment structure, the circuit board can be protected from short-circuit damage when operating above or below the water. The present invention cooperates with the remote controller 2 by providing a control module 101 to control the closing operation of the relay RL1 and the duty cycle adjustment of the MOS. PWM is used to adjust the MOS field-effect transistor Q1, thereby effectively controlling the output at the motor end. When the switch button is pressed again, the relay RL1 is disconnected, thereby cutting off the output. When the MOS field-effect transistor Q1 breaks down, the relay RL1 can cut off the power supply to the motor, stop the motor's operating current, and protect the safety of the motor and the operator.

[0069] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control circuit for an underwater thruster, comprising a thruster body and a remote controller, characterized in that: The thruster body and the remote controller are electrically connected via a communication module; The thruster body includes a control module and a management module, and the control module and the management module are electrically connected. The remote controller includes a remote control module and a main control module, and the remote control module and the main control module are electrically connected.

2. A control circuit for an underwater thruster according to claim 1, characterized in that: The communication module includes a transceiver U4, a capacitor C9, a capacitor C19, a resistor R14, a capacitor C18, a diode TVS2, a filter RC4, a diode TVS1, a filter RC3, an interface RS1 and an interface RS2; The eighth pin of the transceiver U4 is connected to one end of the capacitor C9, the other end of the capacitor C9 is grounded, the seventh pin of the transceiver U4 is respectively connected to the capacitor C19, the diode TVS1, the resistor R14 and one end of the filter RC3, the other end of the capacitor C19 is grounded, the other end of the diode TVS1 is grounded, the other end of the filter RC3 is respectively connected to the first pin of the interface RS1 and the first pin of the interface RS2, the second pin of the interface RS1 is respectively connected to the second pin of the interface RS2 and one end of the filter RC4; The other end of the filter RC4 is respectively connected to one end of the diode TVS2, one end of the capacitor C18, one end of the resistor R14 and the sixth pin of the transceiver U4, the other end of the diode TVS2 is grounded, the other end of the capacitor C18 is grounded, and the fifth pin of the transceiver U4 is grounded.

3. The control circuit for an underwater thruster according to claim 1, characterized in that: The control module includes a resistor R20, a capacitor C21, a resistor R22, a motor connector MD, a transistor Q3, a diode D3, a relay RL1, a fuse F1, a resistor R21, a light-emitting diode LED4, a capacitor C1, a diode D2, a capacitor C4, an inductor LX, a field-effect transistor Q1, a transistor Q4, a resistor R23, a resistor R2, a light-emitting diode LED3, a resistor R13, a transistor Q2, a diode D4, a resistor R15, a resistor R11, a resistor R1, and a capacitor C13; One end of the resistor R20 is connected to the base of the transistor Q3, the collector of the transistor Q3 is connected to the diode D3 and one end of the relay RL1 respectively, the emitter of the transistor Q3 is grounded, the other end of the resistor R20 is connected to one end of the capacitor C21 and one end of the resistor R22 respectively, and the other end of the capacitor C21 is grounded; The other end of the relay RL1 is connected to the fuse F1, the other end of the fuse F1 is connected to one end of the resistor R21 and one end of the lithium battery BAT1, the other end of the lithium battery BAT1 is grounded, the other end of the resistor R21 is connected to one end of the light-emitting diode LED4, the other end of the light-emitting diode LED4 is respectively connected to the third pin of the inductor LX, the diode D2, one end of the capacitor C1, and the relay RL1, the other end of the capacitor C1 is grounded, the fourth pin of the inductor LX is connected to the first pin of the motor connector MD and one end of the capacitor C4, the second pin of the motor connector MD is respectively connected to the first pin of the inductor LX, the second pin of the inductor LX, the other end of the capacitor C4, the other end of the diode D2, and the drain of the field effect transistor Q1; The other end of the resistor R22 is respectively connected to one end of the resistor R23, the gate of the field effect transistor Q1, one end of the resistor R15, and one end of the diode D4, and the other end of the diode D4 is grounded. The source of the field effect transistor Q1 is respectively connected to the other end of the resistor R15, the resistor R11, and one end of the resistor R1, the other end of the resistor R1 is grounded, the other end of the resistor R11 is connected to one end of the capacitor C13, the other end of the capacitor C13 is grounded, and the other end of the diode D4 is grounded. The other end of the resistor R23 is connected to the collector of the transistor Q4, the base of the transistor Q4 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the collector of the transistor Q2, the emitter of the transistor Q2 is grounded, the base of the transistor Q2 is connected to one end of the light-emitting diode LED3, and the other end of the light-emitting diode LED3 is connected to one end of the resistor R13.

4. The control circuit for an underwater thruster according to claim 1, characterized in that: The management module includes a transistor Q5, a resistor R17, a resistor R18, a capacitor C20, a filter RC1, a transistor Q6, a resistor R19, a resistor R3, a resistor R4, a resistor R5, a resistor R8, a capacitor C12, a capacitor C2, a chip U2, a capacitor C5, a resistor R7, a resistor R6, a capacitor C16, a capacitor C3, an inductor L1, a diode D1, a filter RC2, a resistor R9, a capacitor C6, a light-emitting diode LED1, a voltage regulator U5, a capacitor C11, a resistor R16, a capacitor C10 and a relay U3; The collector of the transistor Q5 is connected to one end of the filter RC1, the base of the transistor Q5 is connected to one end of the resistor R17, the other end of the resistor R17 is connected to the resistor R18 and one end of the capacitor C20 respectively, and the other end of the capacitor C20 is grounded, the other end of the resistor R18 is connected to the collector of the transistor Q6, the emitter of the transistor Q6 is grounded, and the base of the transistor Q6 is connected to the resistor R19; The other end of the filter RC1 is respectively connected to the resistor R3, one end of the capacitor C2, one end of the capacitor C5, and the first pin of the chip U2. The other end of the resistor R3 is connected to one end of the resistor R4. The other end of the resistor R4 is respectively connected to one end of the resistor R5 and the resistor R8. The other end of the resistor R5 is grounded. The other end of the resistor R8 is connected to one end of the capacitor C12. The other end of the capacitor C12 is grounded. The other end of the capacitor C2 is respectively connected to the eighth pin, the seventh pin, the sixth pin, the fifth pin, the ninth pin and the fourth pin of the chip U2 and are grounded. The third pin of the chip U2 is respectively connected to the resistor R7, the capacitor C16 and one end of the resistor R6. The other end of the resistor R7 is grounded. The other end of the capacitor C16 is respectively connected to the inductor L1, the capacitor C3 and one end of the filter RC2. The other end of the capacitor C3 is grounded. The other end of the inductor L1 is respectively connected to one end of the diode D1 and the second pin of the chip U2. The other end of the diode D1 is grounded. The other end of the capacitor C5 is grounded. The other end of the filter RC2 is respectively connected to the resistor R9, one end of the capacitor C6 and the second pin of the voltage regulator U5, the other end of the capacitor C6 is grounded, the other end of the resistor R9 is connected to one end of the light-emitting diode LED1, the other end of the light-emitting diode LED1 is grounded, the first pin of the voltage regulator U5 is grounded, the third pin of the voltage regulator U5 is respectively connected to the capacitor C11 and one end of the resistor R16, the other end of the resistor R16 is connected to the second pin of the relay U3, the other end of the capacitor C11 is grounded, the first pin of the relay U3 is connected to the capacitor C10, and the other end of the capacitor C10 is grounded, and the third pin of the relay U3 is grounded.

5. The control circuit for an underwater thruster according to claim 1, characterized in that: The remote control module includes an antenna connector ANT, a network module RF, a capacitor C17, a filter RC5, a capacitor C8 and a connector H; A first pin of the network module RF is connected to one end of the capacitor C17 and is grounded. A second pin of the network module RF is respectively connected to the other end of the capacitor C17 and one end of the filter RC5. The other end of the filter RC5 is respectively connected to one end of the capacitor C8 and the first pin of the connector H. The other end of the capacitor C8 is grounded. The second pin of the connector H is grounded. The first pin of the antenna connector ANT is connected to the twelfth pin of the network module RF and is grounded, the second pin of the antenna connector ANT is connected to the eleventh pin of the network module RF, and the third pin of the antenna connector ANT is connected to the tenth pin of the network module RF and is grounded.

6. The control circuit for an underwater thruster according to claim 1, characterized in that: The main control module includes a chip U1, a capacitor C7, a resistor R10 and a light-emitting diode LED2; The first pin of the chip U1 is grounded, the twenty-fourth pin of the chip U1 is connected to one end of the capacitor C7, the other end of the capacitor C7 is grounded, the thirteenth pin of the chip U1 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to one end of the light-emitting diode LED2, and the other end of the light-emitting diode LED2 is grounded.

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