12 results about "Magnetic resonant coupling" patented technology

This invention pertains to implantable medical device technology, specifically relating to a large-gap, offset-resistant wireless power and communication system for implantable medical devices. The system includes an external control module, an external relay module, and an implantable stimulation module. The external control module is used for energy transmission and communication control, while the implantable stimulation module is used for energy reception and information feedback. The external relay module is positioned between the two to improve the wireless power transmission distance and efficiency. The system achieves wireless power transmission through a multi-stage magnetic resonant coupling structure and incorporates a decoupling structure between the relay coils to reduce cross-coupling, ensuring stable transmission performance even under spatial offset conditions. An internal and external wireless communication link is established, integrating energy and information transmission, and closed-loop control is achieved by collecting status information from the energy storage unit. The system can achieve stable and efficient wireless power supply and reliable communication under conditions of large gaps and positional offsets.

The utility model relates to insulator technical field especially is a wireless energy transmission device of application composite insulator, it includes insulator body, electricity taking connection subassembly and electricity connection subassembly, one end of insulator body is provided with first fitting, the other end of insulator body is provided with second fitting, insulator body is spaced apart with a plurality of coil board along its length direction, and each coil board is encapsulated with coil body, electricity taking connection subassembly includes electricity taking support and the electricity taking cable of installing on electricity taking support, and electricity connection subassembly includes electricity taking support, electricity cable and electric energy storage device. The utility model novel structure, clever design, through along the coil board of the length direction interval arrangement of multiple embedded coils of insulator body, form distributed magnetic resonance coupling path, realize high voltage side to low voltage side's non -contact energy transmission, solve the problem that traditional technology frequently replaces battery, power supply stability is influenced by weather or is power supply power limited.

The invention discloses a bimodal emergency energy supply system for emergency unhooking of a high-voltage battery, and belongs to the technical field of new energy automobile safety, and the bimodal emergency energy supply system comprises a wired emergency channel which comprises a super capacitor energy storage module and provides instantaneous high-power electric energy for the system; the wireless emergency channel is constructed based on a magnetic resonance coupling principle and provides non-contact electric energy transmission for the system; the intelligent arbitration module is in signal connection with the wired emergency channel and the wireless emergency channel, monitors state parameters of each channel in real time, and preferentially selects the wired emergency channel based on a preset arbitration strategy, selects the wireless emergency channel when the wired emergency channel is unavailable or the performance is insufficient, or fuses electric energy output of the wired emergency channel and the wireless emergency channel; wherein the electric energy output end of the system is connected to the emergency unhooking execution module and is used for outputting electric energy to the emergency unhooking execution module so as to trigger the unhooking action. According to the application, the limitation of a single path is broken through by adopting a bimodal energy supply mode, and emergency physical isolation of a high-voltage loop can be ensured to be realized within the shortest time.

A filter device includes: a filter element including a filtration member configured to filter a liquid and an IC tag including a first antenna coil; a filter case in which the filter element is installed; and a measurement unit installed in the filter case and including an antenna including a second antenna coil. The filter device performs transmission by magnetic resonance coupling between the first antenna coil and the second antenna coil. The filter case includes a partition wall that partitions an internal space into a first region provided with the filter element and a second region not provided with the filter element and is made of metal. The measurement unit includes a housing attached to the filter case. While the housing is disposed in the filter case, a tip end of the housing is inserted in the second region.

The present invention relates to a wireless power transmission device capable of stably operating without controlling the amount of power to prevent a circuit failure due to an overcurrent, when there is a change in the number of wireless power reception devices in a power transmission area of the wireless power transmission device, during the transmission of power using a magnetic resonance coupling method, a wireless power reception device, and a wireless power transmission and reception system including the wireless power transmission device and the wireless power reception device.

The invention discloses an amphibious deformable wheel paddle based on wireless energy transmission and a control method thereof, and relates to the technical field of wheel paddles, the amphibious deformable wheel paddle comprises a wheel body module, a wireless power supply module and a driving module, the wheel body module realizes wheel diameter extension and retraction through a slider-crank mechanism, and two states of the minimum wheel diameter and the maximum wheel diameter can be switched; the wireless power supply module stably outputs 5V / 1000mA voltage at the interval of 10mm based on the magnetic resonance coupling principle to supply energy to an embedded part, so that cable winding is avoided; a direct-current brushless motor in the driving module achieves rotation of a wheel body (the maximum linear speed of the water surface is larger than or equal to 2.17 m / s, and the single-wheel thrust is larger than or equal to 6N), and a metal gear digital steering engine drives the wheel body to deform. According to the control method, through state judgment, deformation control, motion control and energy supply guarantee, multi-scene self-adaptive switching is achieved, the maximum obstacle crossing height is larger than or equal to 60 mm, and the needed driving force is smaller than or equal to 0.584 G. The mechanism is compact in structure, efficient in switching, high in reliability and suitable for the fields of amphibious robots, special operation equipment and the like.

The invention provides a passenger train circuit board card detection system and method, and relates to the technical field of circuit fault detection, and the system comprises a data transmission module which supplies power to a to-be-detected board card in a non-contact manner through magnetic resonance coupling; the circuit fault detection module performs dynamic feature extraction and circuit fault detection based on the real-time feedback data; the self-heating repair analysis module generates a self-healing repair scheme when detecting an open circuit fault; the comparison and verification module obtains impedance characteristics after repairing the open circuit, and performs comparison and verification with a performance attenuation model; and if the verification is not passed, the parameter optimization module performs iterative repair based on the impedance characteristic difference until the verification is passed. The technical problem that in the prior art, passive overhaul depends on artificial experience and physical contact, so that it is difficult to accurately recognize and position hidden open circuit faults in complex scenes such as high-voltage isolation, and the overhaul efficiency of the circuit board card of the passenger train is affected can be solved, hidden damage is actively repaired, and the overhaul efficiency of the circuit board card of the passenger train is improved. And the maintenance efficiency of the passenger train circuit board card is improved.

The application relates to a magnetic field sensitive detection device and method based on gain resonant cavity-magnetic resonance coupling, which comprises a microwave gain resonant cavity, a magnetic field probe, a coaxial cable, a phase shifter and a signal reading system; the magnetic field probe is connected in series with the microwave gain resonant cavity through the coaxial cable and the phase shifter, and a detection signal is read from an output end of the microwave gain resonant cavity; the microwave gain resonant cavity converts a change amount of a magnetic field into frequency movement of radiated microwaves through coupling with the magnetic field probe; the magnetic field probe is used for sensing changes of the magnetic field; the coaxial cable and the phase shifter are used for mediating long-range coupling between the microwave gain resonant cavity and the magnetic field probe, and accurately regulating the strength and phase of the coupling; and the signal reading system is used for detecting an oscillation frequency of the microwave gain resonant cavity. The application utilizes a hybrid mode, and the super-high response rate of the hybrid mode to an external magnetic field makes the detection system able to cause great changes of a resonance frequency even when the detection system is subjected to weak magnetic field changes.

The invention discloses a power transmission line defect sensing type composite insulator which comprises an insulator body, a first fitting and a second fitting are arranged at the upper end and the lower end of the insulator body respectively, a sheath and an umbrella skirt are sequentially arranged outside a core rod of the insulator body, and a state sensing system and a wireless energy transmission system are integrated on the insulator body; the state sensing system is used for monitoring and analyzing an electric field, vibration and ultrasonic signals on the surface of the insulator in real time so as to realize identification and positioning of internal defects; and the wireless energy transmission systems are distributed at intervals in the axial direction of the insulator body and used for transmitting electric energy between the high-voltage end and the low-voltage end in a non-contact mode through a magnetic resonance coupling mode and providing continuous electric power supply for the state sensing system. The problems that internal defects of an existing composite insulator are difficult to find in time, a high-voltage side sensing unit cannot stably supply power for a long time, and long-term operation reliability is insufficient are solved.

This invention discloses a passive dual-feedback long-range triggered object-finding tag powered by NFC and its control method, belonging to the field of NFC wireless power supply and smart object finding. The tag includes: a high-Q NFC magnetic resonance coupling antenna and a dynamic impedance matching network to achieve efficient energy harvesting over a distance of 1-2 meters; a dual-path heterogeneous voltage threshold adaptable power supply architecture controlled by a voltage detection comparator, which activates the acoustic-optical feedback unit for area positioning when the voltage reaches 1.5V and the Bluetooth broadcast unit for precise positioning when it reaches 2.5V; and a high-permeability ferrite magnetic shielding sheet to ensure resistance to metal interference. This invention also discloses the corresponding control and manufacturing methods. This invention completely eliminates the need for a battery, achieving zero standby power consumption and ultra-long lifespan, with a total thickness that can be compressed to below 0.8mm. It is the first invention to achieve passive tag triggering and dual-mode feedback using a civilian mobile phone's NFC at a distance of 1-2 meters, solving the core problems of existing object finders such as reliance on batteries, large thickness, and short NFC tag triggering distance.

The present application relates to a kind of wireless charging system and method of supporting frequency compensation and strategy optimization, including cloud server, master site gateway device, transmitting end, receiving end and battery system. Cloud server deploys battery state prediction model, generates energy scheduling strategy and battery charging optimization strategy, and issues to master site gateway device for edge control. Transmitting end collects the coil parameter between receiving end, generates frequency compensation strategy and dynamically adjusts resonance frequency, produces alternating magnetic field to realize magnetic resonance coupling energy transmission. Receiving end collects battery operating parameter and feedback, and transmitting end adjusts charging current in combination with feedback parameter and optimization strategy. System fusion 2.4G wireless communication, protocol conversion and model optimization, realize efficient, safe wireless charging process.

This application relates to a brain-computer interface (BCI) control system and method. Its wireless power supply transmitter transmits energy through the skin at a frequency of 6.78MHz via magnetic resonance coupling to an implantable BCI controller (ICU) within the body. This allows the ICU to power an implantable brain signal acquisition unit (NRU) and an implantable spinal nerve stimulator (NSU) based on the received energy, enabling wireless power supply to implantable medical devices such as the NRU and NSU. Furthermore, the external BCI controller (ECU) and the implantable ICU communicate wirelessly for motion feedback and control, achieving a closed-loop control system of "perception-decision-feedback-adjustment," thereby improving the accuracy and adaptability of motion control.