6results about How to "Low Power Features" patented technology

The five-degree-of-freedom permanent magnet biased magnetic suspension bearing comprises an outer stator set and an inner rotor set, the outer stator set comprises a stator iron core and two stator magnetic rings arranged at the two ends of the stator iron core respectively, a plurality of stator teeth are arranged on the inner wall of the stator iron core in the radial direction, and coils are wound around the stator teeth; the inner rotor set comprises a rotor core and two rotor permanent magnets arranged at the two ends of the rotor core respectively. The rotor core and the stator teeth are arranged oppositely in the radial direction and are in clearance fit. The two stator magnetic rings and the two rotor permanent magnets are magnetized in the axial direction, the magnetizing directions of the two stator magnetic rings are opposite, and meanwhile the magnetizing direction of any stator magnetic ring is opposite to the magnetizing direction of the rotor permanent magnet opposite to the stator magnetic ring in the radial direction. A static bias magnetic field is provided by permanent magnet acting force between the stator magnetic ring and the rotor permanent magnet, dynamic suspension auxiliary adjustment is performed by using electromagnetism, the power consumption of the system is remarkably reduced, the size is small, and the weight is light.

This invention relates to the field of motion detection technology, and discloses a primary motion detector based on a PN junction channel, its fabrication method, and a sensor. The primary motion detector includes a first phototransistor and a second phototransistor. The first phototransistor is configured to operate under a source-drain forward bias, and its photocurrent decay process during turn-off has a first fast decay time constant and a first slow decay time constant. The second phototransistor is configured to operate under a source-drain reverse bias, and its photocurrent during turn-off has a second fast decay time constant and a second slow decay time constant, wherein the first fast decay time constant is greater than the second fast decay time constant. When a light pulse moves along the direction from the first phototransistor to the second phototransistor, a directional current pulse can be detected at the output of the primary motion detector. This invention achieves high-efficiency and low-power discrimination of the direction of light signals.

The low-power pulse wave signal arrhythmia classification method and system of the application comprises the following steps: using a large convolution kernel to extract the bottom local features of the original signal, and reducing the sequence length by half through pooling; adopting a leaky integral-discharge neuron activation to make the data pulsed; using a large convolution kernel and a hollow convolution to expand the receptive field and capture longer-range local timing features; dimensionally reducing the output features, cooperating with batch normalization, leaky integral-discharge neurons and maximum pooling, and aggregating the local features; calculating self-attention in each subsequence, combining a linear mapping layer, focusing the model on the feature correlation in the local subsequence through the aggregation of the sub-attention map, and extracting the waveform dependence in the short time window of the pulse wave signal; calculating QKV interaction on the whole sequence, combining a linear layer and a pulse neuron, capturing long-distance global feature correlation, and mining the waveform dependence in different time periods of the pulse wave signal. The application can achieve a classification performance equivalent to that of a deep artificial neural network.

The utility model relates to audio equipment technical field, concretely relates to an intelligent earphone, the earphone is connected with mobile terminal wireless communication, including earphone shell, through integrating multiple function modules and optimizing system connection framework, the intelligent level and communication ability of equipment have been improved significantly. Earphone built -in bluetooth module and wi -Fi module, combine control circuit and mobile terminal establish bluetooth wireless connection, while guaranteeing basic audio transmission and instruction interaction, support through wi -Fi realizes high -speed network access, expands data transmission bandwidth and application scene, effectively improves the flexibility, stability and coverage of wireless communication. First sensor circuit is used for real -time sensing earphone's spatial position change and user's motion state, can support multiple intelligent functions, such as step count, motion mode identification and earphone anti -loss reminder (when equipment unusual movement or separate pairing range, send a prompt), enhance the practicability of equipment in the motion health and daily use.

The utility model provides a kind of MEMS heat dissipation device, including MEMS heat dissipation chip, microchannel radiator of being attached to MEMS heat dissipation chip, the size of gas passage of microchannel radiator is micrometer level, and the heat dissipation surface of microchannel radiator is used to be attached to the surface of heat source.The utility model further provides corresponding electronic equipment.The MEMS heat dissipation device of the utility model combines MEMS heat dissipation chip with extremely high back pressure and low power consumption characteristics with specially designed microchannel radiator, overcomes the inherent high flow resistance of microchannel by the high back pressure capacity of MEMS, so that it is possible to realize efficient forced convection heat exchange in extremely small volume, thereby solving the efficient heat dissipation problem under extremely limited space.

The application discloses a high-selectivity acetone gas sensor and a preparation method thereof, and comprises the following steps: providing a MEMS micro-hotplate substrate with a defined active window as a working substrate, in-situ growing an epsilon-WO3 nanostructure array in the active window, sequentially constructing a super-thin NiO continuous shell layer and a discrete CuO catalytic island on the surface of the epsilon-WO3 nanostructure array to form a radial p-n-p heterojunction sensitive structure with epsilon-WO3 as the core and NiO / CuO as the shell, performing a thermal stabilization treatment on the heterojunction sensitive structure, constructing a ZIF-8 molecular sieve film or a ring-shaped fluorinated ionomer selective layer on the surface of the heterojunction sensitive structure to obtain a high-selectivity sensor device, effectively blocking the passage of interfering molecules, and significantly improving the selectivity ratio and the anti-cross interference capability of the sensor device; meanwhile, based on the MEMS micro-hotplate substrate and the thermal stabilization treatment process, the device has good structural stability, low power consumption characteristics and compatibility with a standard semiconductor process, and high selectivity for acetone is realized while high sensitivity is ensured.