6 results about "Microcoil" patented technology

The application provides a micro-coil probe and a preparation method thereof and an anisotropic neuromagnetic regulation device. The micro-coil probe comprises at least one probe structure, the probe structure comprises a first electrode part at both ends of a wire, a contact part at a middle region of the wire, and a first connecting part for connecting the contact part and the first electrode part, and the contact part has an asymmetric geometric shape; wherein in the case that the probe structure is connected to a transient excitation, an induced electric field with anisotropy is generated at the contact part.

This invention discloses a high-efficiency energy-saving transmission device and a nano-sand mill, relating to the field of sand mill technology. It includes: a high-frequency alternating magnetic field generating ring, which is composed of a device shell and a micro-coil array uniformly installed on the inner wall of the device shell; and a multi-level piezoelectric fiber composite material ring disposed inside the high-frequency alternating magnetic field generating ring, which is composed of a flexible epoxy matrix and piezoelectric ceramic fibers embedded in the flexible epoxy matrix arranged in an array along the circumferential and axial directions. The flexible epoxy matrix is ​​connected to the device shell via a connecting plate. This invention can achieve integrated vibration energy recovery and active suppression, reducing vibration damage and achieving the dual goals of energy saving and stable operation. It also features a dual-mode energy storage (electric and mechanical) and dual-path energy recovery energy saving mode, making the energy saving path more efficient.

This invention discloses an adaptive initialization system and method for a Hall sensor based on closed-loop feedback, belonging to the fields of integrated circuit design and magnetic sensor technology. The system is integrated within the Hall sensor integrated circuit and includes a Hall semiconductor sensing unit, a microcoil circuit unit, a microcoil driving circuit unit, a compensation and signal conditioning circuit unit, an analog-to-digital converter unit, a power management unit, and an initialization control logic unit. In initialization mode, the initialization control logic unit continuously acquires the Hall output value, compares it with a preset reference value to generate an error signal, and dynamically adjusts the direction and magnitude of the microcoil current through closed-loop feedback until the Hall output converges within the tolerance range of the reference value. This invention requires no external microprocessor intervention, realizing on-chip closed-loop adaptive initialization across the entire "sensing-decision-execution" chain. It supports multiple modes such as automatic power-on, external enable, and over-limit re-triggering, and has advantages such as high initialization accuracy, fast response speed, low system resource consumption, and ease of industrialization. It can be widely applied in automotive electronics, industrial servo systems, and low-cost IoT devices.

This invention discloses a room-temperature mode-selective physical reservoir computation method, belonging to the field of neuromorphic computing. The method is based on an artificially synthesized antiferromagnetic skyrmion spring oscillator, which electrically selects different intrinsic dynamic modes to adapt to different computational tasks: an in-plane alternating current drives a large-amplitude oscillation mode, providing strong nonlinearity to optimize signal conversion tasks; an out-of-plane alternating magnetic field drives a breathing mode, providing strong short-term memory to optimize time series prediction tasks. The device integrates fully electrically driven, multi-channel parallel readout, voltage-controlled magnetic anisotropy stabilization, and planar microcoil excitation units, achieving full on-chip integration of mode selection, signal processing, and stability control. This invention solves the problems of nonlinearity and memory coupling, poor task adaptability, and insufficient room-temperature stability in physical reservoirs, achieving fast, high-precision, and reconfigurable processing of multiple tasks at room temperature using a single device.

This application relates to a temperature-drift-resistant magnetic sensor and a magnetic field measurement method. The magnetic sensor includes: a substrate; a helical microcoil disposed on the substrate to generate a stable magnetic field environment; a plurality of magnetically sensitive units disposed at different radii of the microcoil, each magnetically sensitive unit outputting a first output signal under the influence of the magnetic field and temperature; a non-magnetically sensitive unit disposed on the microcoil, the non-magnetically sensitive unit outputting a second output signal under the influence of temperature; and a signal processing circuit connected to each of the magnetically sensitive units and the non-magnetically sensitive units, used to output a measured value based on at least one of the first and second output signals. This method can improve the measurement accuracy and reliability of the magnetic sensor.

This invention discloses a high-speed motor speed detection method based on MEMS microcoils, relating to the field of high-speed motor speed detection. The method includes: non-contactly placing at least one MEMS microcoil sensor at a key electromagnetic field coupling position on the high-speed motor body or drive circuit; the MEMS microcoil sensor outputting a raw induced voltage signal; conditioning the raw induced voltage signal; using an analog-to-digital converter to perform high-speed synchronous sampling of the conditioned signal to obtain a digital signal sequence; extracting the speed characteristic frequency; calculating the real-time motor speed based on the speed characteristic frequency and preset motor parameters through a preset mapping relationship, and outputting the calculation result. This invention employs a miniaturized coil sensor based on MEMS technology, combined with intelligent signal processing algorithms, to achieve high-precision, high-response speed measurement in ultra-high-speed scenarios.