Alibaba Group Holding Limited

Hangzhou Zero Zero Technology Co., Ltd.

Advanced New Technologies Co., Ltd.

Alipay (hangzhou) Information Technology Co., Ltd.

Zhejiang Lab

Zhejiang University

City University of Hong Kong

State Grid Zhejiang Electric Power Company Limited

Zhejiang Zhoushan Marine Power Transmission Research Institute Co., Ltd.

Alibabe Group Holding Limited

Hangzhou Antwork Network Technology Co., Ltd.

Zhejiang Meteorological Observatory

Hangzhou Century Co., Ltd.

Hangzhou Century Technology Co., Ltd.

Hangzhou Aohai Marine Engineering Co., Ltd.

Lei Zhang

Tong Zhang

Zhaozhe Wang

Ling Ma

Xian Su

Wei Zhou

Lei Wang

Mengqiu Wang

Sihai Yao

Wei Sun

Hanqing Guo

Ying Yan

Changzheng Wei

He Sun

Chao Zeng

Jiang Wang

Guozhen Pan

Xuepeng Guo

Yubo Guo

Ke Cheng Liu

Yao Tang

Lingtao Kong

Guannan Kou

Chenhui Qian

Zhijian Chen

Xiaoyu Wang

Han Xiao

Pu Duan

Ren Guo

Mengwen Tan

Jian Du

Yufei Lu

Jinming Cui

Lishuai Li

Yang Zhu

Liyin Shen

Zhou Yu

Juan Huang

Lie Chen

Zhicha Zhang

Rungui Ye

Guiyang Su

Zhifei Lu

Zhenxin Chen

Enke Yu

Fang He

Boda Zhou

Kaicheng Deng

Kuan Zhao

Guozhi Chen

Shan Wang

Qiang Jing

Chun Gan

Kai Hu

Yinxian Zhang

Haiyuan Gao

Xi Zhang

Qi Wang

Youpeng Xie

Liman Hou

Qibin Ren

Ran Luo

Zhihong Wang

Zucheng Huang

Hongfeng Ye

Yifan Chen

Aifen Zhu

Wei Shang

Wenzhen Yang

Jianliang Xiao

Ni Yao

Shuqi Ma

Peiqi Shen

Wenjuan Li

Xuanxuan Huang

Wenxiang Jin

Ling Luo

Xiaofen Lou

Lin Ma

Ke Liu

The provided is an integrated multi-parameter (pressure, temperature, proximity) sensor based on optoelectronic integration and a fabrication method thereof. The sensor includes a flexible optical waveguide based on an optical mechanism and a flexible interdigitated electrode film based on an electrical mechanism and wound around the flexible optical waveguide, where the flexible optical waveguide is formed by inserting two optical fibers into a silicone tube, with the two optical fibers spaced apart from each other. The sensor achieves self-decoupled, crosstalk-free sensing of three parameters (pressure, temperature, proximity) through photoelectric-integrated multi-dimensional response signals. The sensor measures pressure via optical waveguide attenuation in the form of light intensity, measures temperature via the thermoresistive effect of the electrode in the form of resistance, and measures object proximity via the fringing electric field between the interdigitated electrodes in the form of capacitance.

Integrated multi-parameter sensor based on optoelectronic integration and fabrication method thereof

Methods, apparatuses, and systems for protecting privacy are described. In an example, a first party encrypts a first data set, and sends a single-encrypted full data set to a second party. The second party re-encrypts the single-encrypted full data set to obtain a double-encrypted full data set, obtains a single-encrypted sampling data set, and sends the single-encrypted sampling data set to the first party. The first party encrypts the single-encrypted sampling data set to obtain a double-encrypted sampling data set, determines an intersection of the double-encrypted full data set and the double-encrypted sampling data set, performs upsampling on a complement other than the intersection in the double-encrypted sampling data set to obtain a noise-added intersection, and sends an element index of the noise-added intersection to the second party. The second party determines related information of common data based on the element index.

Common data determining methods, apparatuses, and systems for protecting privacy

A light scattering patch device and preparation method thereof is disclosed. The light scattering patch device is composed of a patch, an air gap, and a tapered optical fiber; the patch is a transparent patch; a refractive index of the patch is greater than a refractive index of a biological tissue; a tip, a tapered transition zone and a partial unstretched zone of the tapered optical fiber are embedded in the patch, and the air gap is formed between the tip and the tapered transition zone of the tapered optical fiber and the patch. The method of preparing the light scattering patch device comprises: first preparing the tapered optical fiber, then performing hydrophobic modification on the surface of the tapered optical fiber; placing the tapered optical fiber in an uncured polymer and curing the uncured polymer, and pulling the unstretched part; connecting the unstretched part of the tapered optical fiber.

Light scattering patch device and preparation method thereof

The present invention provides a method for planning a shortest possible three-dimensional path for autonomous flying robots to traverse from one location to the other in a geographical region, including translating a three-dimensional (3D) environment, discretizing the 3D environment into a graph of many grid cells or nodes, employing a modified any-angle path planning algorithm to calculate non-uniform traversal cost of each grid cell and by averaging the total traversal costs along the path to shorten the corresponding computation time, whilst incorporating operational costs other than the traversal cost specific to the autonomous flying robots to be traversed. The shortest possible path found by the present method does not only consider the path length, but also takes different costs of traversing and operating the flying robots into account, which increases its feasibility and flexibility to be applied in a wide variety of situations and technological areas.

Grid based path search method for UAV delivery operations in urban environment

The present invention belongs to the field of nowcasting early-warning technology, and discloses a thunderstorm gale early-warning method, system, equipment and terminal. The thunderstorm gale early-warning method comprises: preprocessing single radar data to identify potential thunderstorm gale areas; and in real-time service, calling the thunderstorm gale parameter model in the potential thunderstorm gale areas identified by single radar every time to perform extrapolation for 1 hour, thereby forming a thunderstorm gale early-warning product within the next hour. The thunderstorm gale early-warning method provided by the present invention makes full use of the identification technology of dual polarization radar to identify the potential of thunderstorm gale, acquires falling areas of potential thunderstorm gale within the next hour by the extrapolation technology, and has better advance and accuracy compared with the existing thunderstorm gale early-warning method.

Thunderstorm gale early-warning method, system, equipment, and terminal

An optical waveguide-type soft photoactuator based on an optical micro/nanofiber includes an optical micro/nanofiber, a first deformed material membrane, and a second deformed material membrane. One end of the optical micro/nanofiber is provided with a taper region and a waist region, and the taper region and the waist region are encapsulated in the first deformed material membrane. The second deformed material membrane covers a side of the first deformed material membrane, and the first deformed material membrane or the second deformed material membrane is doped with a photothermal conversion material. The refractive index of the first deformed material membrane is less than the refractive index of a core of the optical micro/nanofiber. The coefficient of thermal expansion of the first deformed material membrane and a coefficient of thermal expansion of the second deformed material membrane are different.

Optical waveguide-type soft photoactuator based on optical micro/nanofiber

An aerial system includes a body, a lift mechanism coupled to the body, a processing system, and at least one camera. The aerial system also includes a first motor configured to rotate the at least one camera about a first axis and a second motor configured to rotate the at least one camera about a second axis. The processing system is configured to determine a direction of travel of the aerial system and to cause the first motor and the second motor to automatically orient the at least one camera about the first axis and the second axis such that the at least one camera automatically faces the direction of travel of the aerial system.

System and method for obstacle avoidance in aerial systems

Methods, systems, and apparatus for optimizing communication in a blockchain network. An example method includes establishing, by a first relay node in the blockchain network, a connection with a first blockchain node in the blockchain network in response to a connection request of the first blockchain node; receiving, by the first relay node, a registration request transmitted by the first blockchain node; generating, by the first relay node, a registration event based on the registration request; updating, by the first relay node, a local routing table based on the registration event; and forwarding, by the first relay node, a message of the first blockchain node to another relay node or another blockchain node in the blockchain network that is connected to the first relay node based on the local routing table.

Communication optimization systems of blockchain network, registration methods and message forwarding methods

A first logic circuit included in a processor receives a first digital signal, where the first logic circuit includes a special purpose register, a comparator, and an adder, where the special purpose register stores a first resource balance for executing a smart contract, where the first digital signal includes a resource deduction quota corresponding to a code set in the smart contract. The first logic circuit reads the first resource balance from the special purpose register. The first logic circuit compares, using the comparator, the first resource balance with the resource deduction quota. In response to the first resource balance being greater than or equal to the resource deduction quota, the first logic circuit subtracts, using the adder, the resource deduction quota from the first resource balance to obtain a second resource balance. The first logic circuit stores the second resource balance in the special purpose register.

Methods and processors for performing resource deduction for execution of smart contract

An aerial vehicle including a housing, an outrunner motor including a stator mechanically coupled to the housing and a rotor rotationally coupled to the stator, and a propeller removably coupled to the rotor, the propeller including a hub and a plurality of propeller blades. A rotor, a propeller including a hub and a propeller blade, a radial alignment mechanism, a rotational retention mechanism, and an axial retention mechanism.

Aerial system propulsion assembly and method of use

An aerial system includes a body, a propeller coupled to the body, and a motor coupled to the propeller. The motor is configured to rotate the propeller in a first direction, wherein an other portion of the aerial system rotates in an opposing second direction. The other portion of the aerial system that rotation in the opposing second direction may be the body or a second propeller. The aerial system also includes a processing system configured to control the motor to cause the aerial system to hover in a substantially fixed pose, and a camera configured to obtain images of an environment proximate the aerial system while the aerial system is hovering.

Autonomous self-stabilizing aerial system and method

A trencher includes a trencher body; a cable detection mechanism disposed at a front portion of the trencher body; a chain mechanism and a jet mechanism disposed in the center of a bottom portion of the trencher body; a first track mechanism and a second track mechanism, the first track mechanism being disposed on a first side of the bottom portion of the trencher body, and the second track mechanism being disposed on a second side of the bottom portion of the trencher body; and a soil discharging component disposed at a rear portion of the trencher body.

Submarine cable trencher

Disclosed are a service processing method and apparatus, and a service server. The method comprises: receiving an operation request, sent by a first client device, for requesting to perform a service operation; generating a target service random code for a first account according to the operation request; receiving an operation response that is sent by a second client device according to the target service random code; identifying the first account by using the operation response; and sending account information of the first account to the second client device, so that the second client device completes the service operation based on the account information. In embodiments of the present application, a service processing process is completed based on a service random code that is generated by a service server in real time; therefore, security is relatively high, and interference from the external natural environment is avoided, and reliability of service processing can be effectively improved.

Service processing method and apparatus, and service server

A method and an apparatus for unlocking a user interface are disclosed. The method includes: selecting, when an unlocking interface is triggered, an unlocking password applicable to the interface from preset sets of passwords; and releasing a locked state of the interface when a user input password matching the unlocking password is received. Using the technical solutions of the present disclosure, the security of unlocking may be improved.

Method and apparatus for unlocking user interface

An unmanned aerial vehicle is described herein. The unmanned aerial vehicle includes a fuselage body, a lift mechanism coupled to the fuselage body, and a depth sensing and obstacle avoidance system coupled to the fuselage body. The depth sensing and obstacle avoidance system includes a platform assembly, a pair of stereovision cameras coupled to a platform assembly, and a motor assembly coupled to the fuselage body and to the platform assembly. The platform assembly includes a support member extending between a first end and an opposite second end along a longitudinal axis. The pair of stereovision cameras includes each stereovision camera positioned at an opposite end of the support member. The motor assembly is configured to rotate the platform assembly with respect to the fuselage body about a rotational axis perpendicular to the longitudinal axis of the platform assembly.

Unmanned aerial vehicle including an omnidirectional depth sensing and obstacle avoidance aerial system and method of operating same

Growing community of inventors

Hangzhou, China

Lei Zhang