6results about How to "No wiring required" patented technology

The invention relates to the technical field of power transformation protection replacement, in particular to a power line loss abnormity monitoring system and monitoring method. The host and the extension sets are provided with communication modules, and the communication modules provide wireless communication links and pulse signals. A power supply circuit, a current acquisition circuit, a leakage current acquisition circuit, a voltage acquisition circuit, a phase sequence measurement circuit, an MCU core control circuit and a 4G communication circuit are integrated in the host and the extension set. Time service and communication are combined into one, an independent high-precision GPS module is omitted, reference pulses are distributed through 4G after Beidou signals are acquired at the outdoor host, and sub-millisecond synchronization can be achieved without receiving satellite signals by the indoor extensions. The phase sequence judgment precision is high, A, B and C three-phase and single-phase user attribution phases can be reliably distinguished, the extension set can be put into use only by clamping a clamp meter, wiring is not needed, relaying is not needed, and an original metering seal does not need to be damaged.

The utility model discloses a passive wireless vibration sensing device and system, sensing device includes antenna group, the antenna group includes at least one antenna, antenna group is connected with frequency conversion device and phase modulation device, frequency conversion device is connected with phase modulation device, and phase modulation device is connected with piezoelectric device, sensing system includes read-write device, and read-write device is connected with at least one passive wireless vibration sensing device, the utility model can carry out real -time accurate monitoring to vibration under the condition of passive.

The application discloses a bridge structure self-adaptive sampling monitoring method and device suitable for an extreme road environment, and belongs to the technical field of bridge structure health monitoring.The core target of the application is to solve the problems of repeated arrangement of existing monitoring equipment, road-bridge data fragmentation, and low self-adaptive sampling regulation precision.Through innovative design of a road-bridge multiplexing integrated sensing node, single-node multi-parameter and full-scene monitoring are realized, and the arrangement cost and construction difficulty are reduced; through construction of a self-adaptive sampling strategy based on fuzzy logic control, a feasible algorithm model is given, continuous dynamic regulation of sampling parameters is realized, monitoring precision and low power consumption are taken into account, deep collaborative linkage of road environment monitoring and bridge structure monitoring is realized, and the safe operation of the bridge structure under the extreme road environment is ensured.

The present application relates to the field of digital information transmission, more particularly to a method for wireless remote control of actuators. The present application specifically comprises the following steps: using a lora narrowband data transmission mode, establishing a star network topology with the actuator end and the handheld device end as nodes, calculating the distance of each node in the star network topology, searching for the node of the actuator end with the shortest distance to the handheld device end, positioning all actuator nodes through the node of the actuator end with the shortest distance, and performing long-distance data transmission and control of multiple actuators. The lora narrowband data transmission mode in the present application has controllable strength, low cost, low power consumption, long service life, wiring-free, strong anti-interference ability, and strong scalability. When there are multiple actuators, the actuators can also communicate with each other, and the star network topology formed in this way can make the transmission distance longer.

The application relates to a packaging substrate structure for realizing inter-chip direct interconnection, comprising: a substrate; a first dielectric layer; a first chip, the front surface of the chip being embedded in the first dielectric layer, the first chip being provided with a first pad and a second pad with a size larger than the first pad; a second dielectric layer; a first metal through hole penetrating through the second dielectric layer and being electrically connected with the second pad; a second metal through hole penetrating through the second dielectric layer and the first dielectric layer and being electrically connected with a substrate pad; a third dielectric layer; a third metal through hole penetrating through the third dielectric layer and the second dielectric layer and being electrically connected with the first pad; a fourth metal through hole penetrating through the third dielectric layer and being electrically connected with the second metal through hole; wherein the top surfaces of the third metal through hole and the fourth metal through hole and the upper surface of the third dielectric layer are all provided with pads; and a second chip is flip-chip soldered on the pads on the top surface of the third metal through hole and the upper surface of the third dielectric layer.

The invention discloses a rotor for non-contact angle measurement and an angle measuring and calculating method. The rotor comprises a cylindrical rotor body and a plurality of arc-shaped concave parts which are uniformly distributed along the peripheral surface of the cylindrical rotor body; the outline of each arc-shaped concave part is composed of an elliptical arc, the long axis size of the ellipse is equal to the outer diameter a of the rotor, the short axis size is b, and a is larger than b. The measuring and calculating method comprises the following steps: configuring a position sensor to acquire a distance d to the edge of a rotor in real time; recording the number n of signals generated by the arc-shaped concave part passing through the sensor; calculating an ellipse polar angle alpha according to the distance d in combination with an ellipse polar radius formula; calculating a mechanical angle according to alpha and n; and calculating the electrical angle by combining the motor pole pair number p. According to the invention, non-contact high-precision angle measurement is realized.