Zhejiang University

Johnson Electric S.a.

Johnson Electric International Ag

Other

Shenzhen Goodix Technology Co., Ltd.

Amphenol East Asia Electronic Technology (shen Zhen) Co., Ltd.

Huizhou Epower Electronics Co., Ltd.

Shenzhen Newfilms New Material Technology Co., Ltd

Huawei Technologies Co., Limited

Huawei International Pte. Ltd.

Fei Liu

Hua Li

Rui Feng Qin

Jun Zhou

Jiangang Shen

Wenwen Kong

Yong He

Hui Fang

Yong Zhang

Dapeng Chen

Liang Chen

Long Xie

Yufei Liu

Dekun Chen

Li Wang

Xiaolong Li

Lichun Li

Ji Yu Liang

Qingbin Li

Fahai Chen

Guochao Yin

Han Guo

Xin Hui Guan

Hong Xu

Rui Yang

Yong Cao

Shu Hai Yuan

Feng Wen

Hong Liang Zhang

Haiyan Cen

Hai Qiang Zhou

Ting Tuan Xu

Xiaoli Li

Yidan Bao

Yue Yu

Tiantian Pan

Xiangyu Lu

Qiong He

Yueshan He

Jie Jiao

Mengyuan Chen

Riqun Ni

Hangjian Chu

Xusong Ruan

Xiaosheng Guan

Hancha Liu

Weijie Dai

Wenjiang Shi

Jiang Cheng Xiao

Zhiqi Wang

Jinli Du

Lei Feng

Meng Jia

Xin Kang

Haiguang Wang

Zhongding Lei

Marco Spini

The present disclosure provides a crop yield estimation method and system based on level identification and weighted decision fusion. The method includes: inputting an obtained visible light image of a target crop field at maturity into a yield level classification model, to obtain yield level output values corresponding to all yield levels of the visible light image of the target crop field at maturity, where the yield levels are determined according to a yield level rule; calculating a confidence score corresponding to each of the yield level output values, and sorting the confidence scores in descending order; selecting the first m confidence scores, and performing normalization on the first m confidence scores to obtain m yield level weights; and respectively multiplying the m yield level weights and corresponding yield levels, and adding up all products, to obtain an estimated yield of the target crop field at maturity.

Crop yield estimation method and system based on grade identification and weight decision-making

A whole-process automatic soil tabletting machine is provided. The machine includes a device body. A tabletting platform is arranged at a bottom of the device body, a first station on which a heating device is arranged, second and third stations are arranged on the tabletting platform. A top plate is arranged at a top of the device body. A soil crushing cutter and a punch head are installed on the top plate. The soil crushing cutter and the punch head are arranged above the first and second stations respectively. The tabletting platform is installed with a groove disc where sample preparation grooves and a cleaning groove are formed. The sample preparation grooves and the cleaning groove correspond to the first station, the second station or the third station. The cleaning groove and each sample preparation groove are for placing a cleaning container and a soil sample container, respectively.

Whole-process automatic soil tabletting machine

An insulating medium rubber film and a production method thereof, and a multi-layer printed-circuit board. The insulating medium rubber film includes a release film and an insulating medium layer arranged on the surface of the release film, where materials of the insulating medium layer include saturated polyester resin, amino resin or blocked isocyanate, epoxy resin, a curing agent, inorganic filler and a curing accelerator. According to the insulating medium rubber film and the production method thereof and the multi-layer printed-circuit board, by introducing the saturated polyester resin component into an epoxy resin composition, the produced insulating medium rubber film has the advantages that a dielectric constant is low, a dielectric dissipation factor is low, thermal expansion is not liable to happen, and adhesion is good.

Insulating medium rubber film and production method thereof and multi-layer printed-circuit board

Disclosed a crop yield prediction method and system based on low-altitude remote sensing information from an unmanned aerial vehicle (UAV). Obtaining a plurality of images taken by the UAV; stitching the plurality of images to obtain a stitched image; performing spectral calibration on the stitched image to obtain the reflectivity of each pixel in the stitched image; using a threshold segmentation method to segment the stitched image, to obtain a target area for crop yield prediction; using a Pearson correlation analysis method to analyze a correlation between the reflectivity of each band and the growth status and yield of the crop to obtain feature bands; constructing yield prediction factors based on the feature bands; and determining a predicted crop yield value of the target area for crop yield prediction based on the yield prediction factors and a crop planting area of the target area for crop yield prediction.

Crop yield prediction method and system based on low-altitude remote sensing information from unmanned aerial vehicle

Aerodynamic aquatic weed removal and decontamination devices and decontamination methods are disclosed. In an embodiment, the aerodynamic aquatic weed removal and decontamination device includes a boat body and a shore-based device for remotely controlling the boat body. The boat body includes a power unit, a weed removal and decontamination unit, a positioning system, an environment perception system, and a shipborne controller. The power unit includes an engine, a propeller connected to the engine, and a rudder servo motor configured to control a heading of the boat body. The weed removal and decontamination unit includes a mesh conveyor. The positioning system includes a positioner configured to obtain real-time location information and heading information of the boat body. The environment perception system includes a wind sensor and a visual sensor. The shipborne controller is configured to control a navigation state of the boat body.

Aerodynamic aquatic weed removal and decontamination device and decontamination method

Provided are a data communication method and system, an electronic device, a chip and a storage medium. The data communication method includes: establishing a wireless communication connection with a first receiving terminal, and notifying the connection information to a second receiving terminal. The connection information includes information of a communication channel for performing wireless communication between the transmitting terminal and the first receiving terminal. The connection information is used to instruct the at least one second receiving terminal to monitor communication data in the communication channel. When the at least one second receiving terminal knows after monitoring the communication data, data required to be transmitted to the first receiving terminal is transmitted to the communication channel. A first time period for the transmitting terminal to transmit data in the communication channel does not overlap a second time period for the at least one second receiving terminal to transmit data in the communication channel.

Data communication method and system, electronic device, chip and storage medium

The invention relates to a method and device for predicting a volume median diameter (VMD) in an overlapped spray area of twin nozzles. Placing a single nozzle at different heights to determine a spray area; measuring all VMDs in the spray area to obtain first true measured values; dividing the first true measured values to construct a first calibration set and a first prediction set; establishing a polynomial fitting formula by a REGRESS function; placing twin nozzles at different heights and different nozzle spacing, and measuring VMDs in the overlapped spray area to obtain second true measured values; determining simulated values of the VMDs of first and second nozzles; dividing the simulated values of the VMDs and the second true measured values to construct a second calibration set and a second prediction set; quantitatively calibrating by using a radial basis function neural network (RBFNN) to obtain a prediction model; determining a VMD in the overlapped spray area of twin nozzles.

Method and device for predicting volume median diameter in overlapped spray area of twin nozzles

A brush motor includes a stator and a rotor. The rotor includes a rotary shaft with a rotor core and commutator fixed thereto. The commutator includes an insulating base and commutator segments fixed to the insulating base. The stator includes 2P stator poles, where P is an integer greater than 1. The rotor comprises m teeth, where 4P&#x3e;m&#x3e;2P, and 2m is an integral multiple of P. The rotor includes a rotor winding, which is a concentrated winding having m first elements and m second elements. Each tooth is wound with one of the first elements and one of the second elements. the m first elements form a plurality of element groups, each having n first elements connected in series, and being connected only to corresponding commutator segments at both ends thereof, where P&#x2265;n&#x2265;2. Both ends of each second element are connected to corresponding commutator segments.

Brush motor and cooling module using the same

Provided are a data communication method and system, an electronic device, a chip and a storage medium. The data communication method includes: establishing a wireless communication connection with a preset first receiving terminal, and notifying the connection information to a second receiving terminal. The connection information includes information of a communication channel for performing wireless communication between the transmitting terminal and the first receiving terminal. The connection information is used to instruct the second receiving terminal to monitor communication data in the communication channel. When the second receiving terminal knows after monitoring the communication data, data required to be transmitted to the first receiving terminal is transmitted to the communication channel. A first time period for the transmitting terminal to transmit data in the communication channel does not overlap a second time period for the second receiving terminal to transmit data in the communication channel.

A cooling fan module includes a fan and a PMDC motor. The PMDC motor includes a stator and a rotor. The stator has 2P magnetic poles. The rotor includes a rotary shaft, a rotary core, a commutator, and a winding. The rotor core includes m&#xd7;P pole teeth. The commutator includes k&#xd7;m&#xd7;P commutator segments. Adjacent pole teeth define therebetween winding slots for receiving the winding. The winding includes winding units each having P coils. Each of two ends of each winding unit includes a lead-out line connected to the commutator segment. Any two lead-out lines extending out of different winding slots are spaced from each other at locations outside the commutator segments.

Permanent magnet direct current motor and cooling fan module

An electric power steering system and its brush motor are disclosed. The brush motor includes a stator and a rotor rotatably mounted to the stator. The rotor includes a rotary shaft, a commutator and a rotor core fixed to the rotary shaft, and a rotor winding wound around the rotor core. The commutator includes a plurality of commutator segments. The rotor core includes a plurality of teeth. The rotor winding includes a plurality of winding elements. Adjacent teeth define therebetween wire slots for receiving the winding elements. The winding elements include a plurality of first winding elements and a plurality of second winding elements. The first winding elements are connected in series through the commutator segments. The second winding elements are connected in series through the commutator segments. The first winding elements and the second winding elements are received in different wire slots. Implementation of the present invention can improve the reliability of the product.

Electric power steering system and brush motor thereof

An electric motor has a polygon stator core. The polygon stator core includes yoke portions and teeth extending inwardly from the yoke portions. A winding slot is formed between adjacent teeth. Adjacent yoke portions are interconnected by a connecting portion. The winding slots include first winding slots and second winding slots of different shapes. The ratio of the area of a first winding slot to the area of a second winding slot is greater than or equal to 0.9 but less than or equal to 1.1. By changing the shape of the stator core, the size of the winding slots may be increased without increasing the radial dimension of the motor.

Electric motor having a polygon stator

A multifunctional continuous phase transition extraction apparatus comprises an extraction system, a desorption system and a solvent recovery system. The extraction system comprises a first heat exchanger and an extraction tank. The desorption system comprises a second heat exchanger, a first desorption tank, a second desorption tank, a first purification column and a second purification column. The solvent recovery system comprises a first condenser, a second condenser, a first solvent tank and a second solvent tank. Two extraction loops can be formed in the present invention. During the overall extraction process, the phase transition process of the extracting agent is real-time and continuous. The extracting agent goes through continuous phase-transitions and is cyclically re-used. The overall process is operated in an airtight and low-pressure condition, and is multifunctional, safe, reliable, and suitable for the extraction for most natural products.

Multifunctional continuous phase transition extraction apparatus

The electric connector includes an outer shell, at least one terminal, at least one floating resilient part, at least one screw and a panel. The outer shell includes at least one terminal groove and at least two fastening grooves. The floating resilient part includes at least one inner resilient tab and at least one outer resilient tab. The terminal groove is provided at the middle portion of the outer shell and has an end opening provided at the center of the panel. The fastening grooves are respectively provided at two sides of the outer shell and have end openings provided at two sides of the panel. The terminal is pluggable into the terminal groove, and a head of the terminal passing through the ending opening of the terminal groove is connected with a terminal of a mating connector.

Electric connector

A commutated DC motor () includes a stator () and a rotor () mounted in the stator (). The stator () has 2P magnetic poles, wherein P is an integer greater than 1. The rotor () includes a rotor shaft () with a rotor core (), and a commutator () fixed thereto. The rotor core () has multiple teeth defining m&#xd7;P slots therebetween, wherein m is an odd integer greater than 1. The commutator () has k&#xd7;m&#xd7;P segments, wherein k is 1 or 2. A rotor winding () formed by winding a single continuous wire is received in the slots of the rotor core () and connected to the segments of the commutator (), and has k&#xd7;m winding units. Each winding unit includes P coils in series connection and is directly connected to only two segments.

Rotor windings for DC motor

Growing community of inventors

Shenzhen, China

Fei Liu