Propulsion system for a powered lifejacket

Abstract

The utility model relates to the technical field of propulsion system, especially a kind of propulsion system of power life jacket, including life jacket main body and two pump spray propulsion unit, circuit board is provided on the life jacket main body, the pump spray propulsion unit all includes double-shaft motor and two propellers, main control chip, two-way motor drive module and positioning module are provided on the circuit board, the positioning module is electrically connected with the main control chip, the output end of two-way motor drive module is connected with the output end of two double-shaft motors respectively.The utility model main control chip can independently adjust the rotational speed and steering of both sides propulsion unit, obtain high-precision position information, main control chip unified management two-way motor drive module and positioning module, integrated control logic realizes propulsion instruction and positioning information acquisition, improve system overall response speed and operating reliability, reduce power consumption and hardware redundancy simultaneously, conducive to miniaturization and lightweight design.

Description

Technical Field

[0001] This utility model relates to the field of propulsion system technology, and in particular to a propulsion system for a powered life jacket. Background Technology

[0002] With the increasing demand for water sports, maritime operations, and emergency rescue, traditional passive life jackets that rely solely on buoyancy are no longer sufficient to meet the requirements for rapid evacuation and proactive risk avoidance in complex aquatic environments. Therefore, powered life jackets with propulsion capabilities are gradually being developed and applied, using electric propulsion systems to assist wearers in autonomous movement, steering, and even swimming against the current.

[0003] The propulsion units of existing powered life jackets are mostly arranged on one side or driven by independent motors, resulting in poor control capabilities. Furthermore, although the positioning modules equipped on existing powered life jackets can provide basic position information, their accuracy is poor, which is not conducive to their use in water rescue. Utility Model Content

[0004] This invention aims to at least solve the technical problems existing in the prior art. To this end, this invention proposes a propulsion system for a powered life jacket, which uses a main control chip to uniformly schedule propulsion and positioning information, enabling the perception and response to motion direction, speed, and position information, thereby significantly improving the safety of water rescue.

[0005] A propulsion system for a powered life jacket according to some embodiments of the present invention includes a life jacket body and two pump-jet propulsion units. A circuit board is provided on the life jacket body, and the two pump-jet propulsion units are located at both ends of the life jacket body. Each pump-jet propulsion unit includes a dual-axis motor and two propellers. The two output ends of the dual-axis motor are respectively connected to the two propellers. A main control chip, a dual-path motor drive module, and a positioning module are provided on the circuit board. A first antenna and a second antenna are respectively provided at both ends of the life jacket body. The first antenna and the second antenna are both connected to the input end of the positioning module. The positioning module is electrically connected to the main control chip. The output end of the dual-path motor drive module is respectively connected to the output end of the two dual-axis motors.

[0006] A propulsion system for a powered life jacket according to some embodiments of the present invention has at least the following beneficial effects: This invention features two pump-jet propulsion units symmetrically arranged at both ends of the life jacket body. Each unit uses a dual-axis motor to drive dual propellers. In conjunction with a dual-path motor drive module on the circuit board, the main control chip can independently adjust the speed and direction of the two propulsion units, realizing multiple movement modes such as forward, backward, turning on the spot, and differential cruise. This significantly enhances the wearer's maneuverability and attitude control in complex water flow environments. At the same time, a first antenna and a second antenna are respectively set at both ends of the life jacket, which together with the positioning module form a dual-antenna positioning system to obtain high-precision position information. The main control chip uniformly manages the dual-path motor drive module and the positioning module, and the integrated control logic realizes the acquisition of propulsion commands and positioning information, improving the overall system response speed and operational reliability, while reducing power consumption and hardware redundancy, which is conducive to miniaturization and lightweight design.

[0007] According to some embodiments of the present invention, a propulsion system for a powered life jacket includes a dual-motor drive module comprising a motor drive chip. The motor drive chip has a first output terminal group, a second output terminal group, a first direction control input terminal, a second direction control input terminal, a first pulse width modulation input terminal, and a second pulse width modulation input terminal. The first direction control input terminal, the second direction control input terminal, the first pulse width modulation input terminal, and the second pulse width modulation input terminal are all connected to the output terminal of the main control chip. The first output terminal group and the second output terminal group are also included.

[0008] According to some embodiments of the present invention, a propulsion system for a powered life jacket is provided, wherein the two shoulders of the life jacket body are provided with receiving slots, and the first antenna and the second antenna are respectively disposed in the two receiving slots.

[0009] According to some embodiments of the present invention, a propulsion system for a powered life jacket includes a positioning module comprising a receiving chip. The receiving chip has a first antenna input terminal, a second antenna input terminal, a first radio frequency matching network, and a second radio frequency matching network. The first antenna input terminal is connected to a first antenna through the first radio frequency matching network, and the second antenna input terminal is connected to a second antenna through the second radio frequency matching network.

[0010] According to some embodiments of the present invention, a propulsion system for a powered life jacket includes a first radio frequency matching network comprising a first inductor L1 and a first capacitor C1 connected in sequence. One end of the first inductor L1 is connected to a first antenna, and the other end of the first inductor L1 is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the first antenna input terminal of a receiving chip. A first clamping diode D1 and a second clamping diode D2 are connected in parallel across the two ends of the first capacitor C1.

[0011] According to some embodiments of the present invention, a propulsion system for a powered life jacket includes a second radio frequency matching network comprising a second inductor L2 and a third capacitor C3 connected in sequence. One end of the second inductor L2 is connected to a second antenna, and the other end of the second inductor L2 is connected to one end of the third capacitor C3. The other end of the third capacitor C3 is connected to the second antenna input terminal of a receiver chip. A third clamping diode D3 and a fourth clamping diode D4 are connected in parallel across the two ends of the third capacitor C3.

[0012] According to some embodiments of the present invention, a propulsion system for a powered life jacket includes a first bias voltage input point in the first radio frequency matching network for providing a DC bias voltage to a first antenna; and a second bias voltage input point in the second radio frequency matching network for providing a DC bias voltage to a second antenna.

[0013] According to some embodiments of the present invention, a propulsion system for a powered life jacket is provided, wherein the main control chip is an STM32F103C8T6 chip.

[0014] According to some embodiments of the present invention, a propulsion system for a powered life jacket is provided, wherein the motor drive chip is a TB6612FNG.

[0015] According to some embodiments of the present invention, a propulsion system for a powered life jacket is provided, wherein the receiving chip is UM982.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the pump-jet propulsion unit, circuit board, and power supply according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the pump-jet propulsion unit according to an embodiment of the present invention.

[0020] Figure 4 This is a circuit block diagram of an embodiment of the present invention.

[0021] Figure 5 This is a circuit diagram of the main control chip in an embodiment of the present invention.

[0022] Figure 6 This is a circuit diagram of the dual-motor drive module according to an embodiment of the present invention.

[0023] Figure 7 This is a circuit diagram of the positioning module according to an embodiment of the present invention.

[0024] Reference numerals: 1. Life jacket body; 2. Pump-jet propulsion unit; 3. Circuit board; 4. Dual-axis motor; 5. Propeller; 6. Main control chip; 7. Dual-channel motor drive module; 8. Positioning module; 9. First antenna; 10. Second antenna; 11. Receptacle slot; 12. Power supply. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] like Figures 1-7 As shown, this embodiment of the present invention provides a propulsion system for a powered life jacket.

[0030] A propulsion system for a powered life jacket includes a life jacket body 1 and two pump-jet propulsion units 2. A circuit board 3 is mounted on the life jacket body 1. The two pump-jet propulsion units 2 are located at both ends of the life jacket body 1. Each pump-jet propulsion unit 2 includes a dual-axis motor 4 and two propellers 5. The two output terminals of the dual-axis motor 4 are respectively connected to the two propellers 5. A main control chip 6, a dual-path motor drive module 7, and a positioning module 8 are mounted on the circuit board 3. A first antenna 9 and a second antenna 10 are respectively mounted at both ends of the life jacket body 1. The first antenna 9 and the second antenna 10 are both connected to the input terminal of the positioning module 8. The positioning module 8 is electrically connected to the main control chip 6. The output terminals of the dual-path motor drive module 7 are respectively connected to the output terminals of the two dual-axis motors 4.

[0031] This invention features two pump-jet propulsion units 2 symmetrically arranged at both ends of the life jacket body 1. Each unit uses a dual-axis motor 4 to drive dual propellers 5. In conjunction with the dual-path motor drive module 7 on the circuit board 3, the main control chip 6 can independently adjust the speed and direction of the two propulsion units 2, realizing multiple movement modes such as forward, backward, turning on the spot, and differential cruise. This significantly enhances the wearer's maneuverability and attitude control in complex water flow environments. At the same time, a first antenna 9 and a second antenna 10 are respectively set at both ends of the life jacket, which together with the positioning module 8 form a dual-antenna positioning system to obtain high-precision position information. The main control chip 6 uniformly manages the dual-path motor drive module 7 and the positioning module 8, and the integrated control logic realizes the acquisition of propulsion commands and positioning information, improving the overall system response speed and operational reliability, while reducing power consumption and hardware redundancy, which is conducive to miniaturization and lightweight design.

[0032] This embodiment describes a propulsion system for a powered life jacket. The dual-path motor drive module 7 includes a motor drive chip. The motor drive chip has a first output terminal group, a second output terminal group, a first direction control input terminal, a second direction control input terminal, a first pulse width modulation (PWM) input terminal, and a second PWM input terminal. The first direction control input terminal, the second direction control input terminal, the first PWM input terminal, and the second PWM input terminal are all connected to the output terminals of the main control chip 6. Specifically, by employing a dual-path motor drive chip with independent direction control and PWM speed regulation terminals, the main control chip 6 can precisely adjust the rotation direction and speed of the two dual-axis motors 4, respectively, to achieve complex actions such as differential steering and stationary turning, thereby improving the response speed and operational flexibility of the propulsion system. Figure 6As shown, AOUT1, AOUT2, BOUT1, and BOUT2 serve as the first and second output groups of the two H-bridges, respectively, connected to the dual-axis motor 4 to realize the forward and reverse rotation and speed regulation of the motor; AIN1 and AIN2 serve as the first direction control inputs to receive the motor direction control signal from the main control chip 6, and BIN1 and BIN2 serve as the second direction control inputs to receive the direction control signal of the second motor; PWMA and PWMB serve as the first and second pulse width modulation inputs to receive the pulse width modulation signal.

[0033] The propulsion system of the powered life jacket described in this embodiment has receiving slots 11 on both shoulders of the life jacket body 1. The first antenna 9 and the second antenna 10 are respectively disposed in the two receiving slots 11. Specifically, by embedding the first antenna 9 and the second antenna 10 into the receiving slots 11 on both shoulders of the life jacket, good exposure and signal reception angle of the antennas are ensured when worn, thus improving the practicality and safety of the device.

[0034] The propulsion system of the powered life jacket described in this embodiment includes a positioning module 8 comprising a receiver chip. The receiver chip has a first antenna input terminal, a second antenna input terminal, a first radio frequency matching network, and a second radio frequency matching network. The first antenna input terminal is connected to a first antenna 9 through the first radio frequency matching network, and the second antenna input terminal is connected to a second antenna 10 through the second radio frequency matching network. Specifically, the positioning module uses a receiver chip that supports dual antenna inputs and connects the two antennas through independent radio frequency matching networks. This allows for the simultaneous reception and processing of two satellite signals, providing a hardware foundation for high-precision RTK positioning or heading calculation, and effectively improving positioning reliability and direction determination capabilities.

[0035] The propulsion system of the powered life jacket described in this embodiment includes a first radio frequency matching network comprising a first inductor L1 and a first capacitor C1 connected in sequence. One end of the first inductor L1 is connected to a first antenna 9, and the other end of the first inductor L1 is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the first antenna input terminal of the receiving chip. A first clamping diode D1 and a second clamping diode D2 are connected in parallel across the two ends of the first capacitor C1. Specifically, the first radio frequency matching network adopts an L-shaped LC structure with parallel clamping diodes, which not only achieves impedance matching between the antenna and the receiving chip and optimizes the radio frequency signal transmission efficiency, but also suppresses electrostatic discharge or surge voltage through the clamping diodes, protecting the receiving chip from damage and enhancing the stability of the system in humid environments.

[0036] The propulsion system of the powered life jacket described in this embodiment includes a second radio frequency matching network comprising a second inductor L2 and a third capacitor C3 connected in sequence. One end of the second inductor L2 is connected to the second antenna 10, and the other end of the second inductor L2 is connected to one end of the third capacitor C3. The other end of the third capacitor C3 is connected to the second antenna input terminal of the receiver chip. A third clamping diode D3 and a fourth clamping diode D4 are connected in parallel across the two ends of the third capacitor C3. Specifically, the second radio frequency matching network also adopts an LC matching structure and is equipped with clamping diodes to ensure efficient and low-noise transmission of the second antenna 10 signal, while providing anti-interference and anti-static protection capabilities consistent with the first antenna channel, ensuring the symmetry and consistency of the dual-antenna system operation.

[0037] The propulsion system of the powered life jacket described in this embodiment includes a first bias voltage input point in the first radio frequency matching network for providing a DC bias voltage to the first antenna; and a second bias voltage input point in the second radio frequency matching network for providing a DC bias voltage to the second antenna. Specifically, setting bias voltage input points in the two radio frequency matching networks provides a stable DC power supply to the active antenna, ensuring the normal operation of the antenna's built-in low-noise amplifier, thereby improving the receiving sensitivity and positioning continuity in weak signal environments.

[0038] The propulsion system of the powered life jacket described in this embodiment uses an STM32F103C8T6 chip as the main control chip 6. Specifically, the main control chip 6 uses an STM32F103C8T6, which features a high-performance ARM Cortex-M3 core, rich peripheral interfaces, and low power consumption. It can efficiently process motor control commands and data to meet real-time requirements, while also having external functional modules, balancing cost and system integration.

[0039] The propulsion system of the powered life jacket described in this embodiment uses the TB6612FNG motor drive chip. Specifically, the TB6612FNG motor drive chip has a dual H-bridge structure, high current drive capability, and built-in overheat / overcurrent protection function. It can stably drive two dual-axis motors 4, supports forward and reverse rotation and PWM speed regulation, and improves the reliability and lifespan of the propulsion system.

[0040] The propulsion system of the powered life jacket described in this embodiment uses the UM982 receiver chip. Specifically, the UM982 receiver chip supports multi-system joint positioning and dual-frequency RTK high-precision calculation. Combined with a dual-antenna layout, it can achieve centimeter-level positioning and sub-degree-level heading output, providing precise spatial information support for intelligent navigation and automatic rescue.

[0041] The propulsion system of the powered life jacket described in this embodiment includes a power supply 12, which supplies power to various functional modules.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A propulsion system for a powered life jacket, characterized in that: The device includes a life jacket body and two pump-jet propulsion units. A circuit board is mounted on the life jacket body. The two pump-jet propulsion units are located at both ends of the life jacket body. Each pump-jet propulsion unit includes a dual-axis motor and two propellers. The two output terminals of the dual-axis motors are respectively connected to the two propellers. The circuit board includes a main control chip, a dual-path motor drive module, and a positioning module. A first antenna and a second antenna are respectively mounted at both ends of the life jacket body. Both the first and second antennas are connected to the input terminal of the positioning module. The positioning module is electrically connected to the main control chip. The output terminals of the dual-path motor drive module are respectively connected to the output terminals of the two dual-axis motors.

2. The propulsion system of a powered life jacket according to claim 1, characterized in that: The dual-channel motor drive module includes a motor drive chip, which has a first output terminal group, a second output terminal group, a first direction control input terminal, a second direction control input terminal, a first pulse width modulation input terminal, and a second pulse width modulation input terminal. The first direction control input terminal, the second direction control input terminal, the first pulse width modulation input terminal, and the second pulse width modulation input terminal are all connected to the output terminal of the main control chip. The first output terminal group and the second output terminal group are also included.

3. The propulsion system of a powered life jacket according to claim 1, characterized in that: The life jacket body has receiving slots on both shoulders, and the first antenna and the second antenna are respectively disposed in the two receiving slots.

4. The propulsion system of a powered life jacket according to claim 3, characterized in that: The positioning module includes a receiving chip, which has a first antenna input terminal, a second antenna input terminal, a first radio frequency matching network, and a second radio frequency matching network. The first antenna input terminal is connected to the first antenna through the first radio frequency matching network, and the second antenna input terminal is connected to the second antenna through the second radio frequency matching network.

5. The propulsion system of a powered life jacket according to claim 4, characterized in that: The first radio frequency matching network includes a first inductor L1 and a first capacitor C1 connected in sequence. One end of the first inductor L1 is connected to the first antenna, and the other end of the first inductor L1 is connected to one end of the first capacitor C1. The other end of the first capacitor C1 is connected to the first antenna input terminal of the receiving chip. A first clamping diode D1 and a second clamping diode D2 are connected in parallel across the two ends of the first capacitor C1.

6. The propulsion system of a powered life jacket according to claim 4, characterized in that: The second radio frequency matching network includes a second inductor L2 and a third capacitor C3 connected in sequence. One end of the second inductor L2 is connected to the second antenna, and the other end of the second inductor L2 is connected to one end of the third capacitor C3. The other end of the third capacitor C3 is connected to the second antenna input terminal of the receiver chip. A third clamping diode D3 and a fourth clamping diode D4 are connected in parallel across the two ends of the third capacitor C3.

7. The propulsion system of a powered life jacket according to claim 4, characterized in that: The first radio frequency matching network is provided with a first bias voltage input point for providing a DC bias voltage to the first antenna; the second radio frequency matching network is provided with a second bias voltage input point for providing a DC bias voltage to the second antenna.

8. The propulsion system of a powered life jacket according to claim 2, characterized in that: The main control chip is an STM32F103C8T6 chip.

9. The propulsion system of a powered life jacket according to claim 2, characterized in that: The motor driver chip used is TB6612FNG.

10. The propulsion system of a powered life jacket according to claim 4, characterized in that: The receiver chip used is UM982.

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