Chinese Academy of Sciences

China University of Mining and Technology (CUMT)

Colder Products Company

Xuzhou Zhirun Mining Equipment Science and Technology Co., Ltd

Inspur Suzhou Intelligent Technology Co., Ltd

Hohai University

Inner Mongolia University of Technology

Xuzhou Heavy Machinery Co., Ltd.

Changchun Hipolyking Co., Ltd.

Shandong University

Ding, Mengxian

Xin Zhang

Zhencai Zhu

Gongbo Zhou

Guohua Cao

Yuxing Peng

Feng Gao

Yi He

Guohua Shi

Lina Xing

Wen Kong

Jing Wang

Gang Shen

Grant Armin Wilhelm

Fan Jiang

David J Vranish

Wei Li

Elizabeth Joy Langer

Blair D Plackner

Chaoquan Tang

Liang Wang

Ying Wang

Jianfeng Zhang

Yuping Wu

Qingliang Zeng

Ping Zhou

Cunzhu Tong

Sicong Tian

Lijie Wang

Lijun Wang

Lei Liu

Shili Shu

Yogesh Mohan Bhat

Aru Yan

Yuan Sun

Yingli Sun

Haixiao Si

Wanyue Li

Sanidhya Kumar Sanu

Junxiao Chen

Zhuang Liu

Lirong Wan

Ye Liu

Xiang Li

Gang Zhang

Yaqian Zhao

Yu Tang

Rengang Li

Zenghai Shan

Weihong Peng

Songyong Liu

Chenglong Wang

Ke Wang

Shanzeng Liu

Yuebin Yu

Dong Li

Quan Dong

Zhaosheng Meng

Qingguo Wang

Gaiye Li

Wenmin Guo

Yidong Zhang

Yongjian Deng

Chunli Hua

Yufei Zhao

Fangyuan Sun

Zuzhi Tian

Chenglin Xiao

Mengxian Ding

Mengbing Zhu

Xiaohui Wang

Xiaodi Zhang

Qingrui Meng

Wanxian He

Chenghao Zhao

Xiaotong Wang

Guanzhi Chen

Hongjian Ji

Jinzhe Jiang

Chen Li

Jiaxin Xu

Chunyu Yang

Zhen Gu

Qiao Gao

Hongbing Wang

Huiyang Cao

Jibin Zhong

Xiaoyi Lv

Kuidong Gao

Yuchun Zhao

Liqing Sun

Wenbo Xu

Yang Yang

Yi Zhang

Yong Lu

Zhen Wang

Fangliang Zhang

Junfeng Han

Hao Hong

Bo Yan

Fluid coupling

A large field-of-view adaptive optics retinal imaging system and method with common optical path beam scanning, the system comprises: a light source module (), an adaptive optics module (), a beam scanning module (), a defocus compensation module (), a sight beacon module (), a pupil monitoring module (), a detection module (), a control module () and an output module (). The beam scanning module is configured in different scanning modes for carrying out different scanning imaging functions including a large field-of-view imaging function, a small field-of-view high-resolution imaging function and a large field-of-view high-resolution imaging function. The system is simple in structure, and the common optical path structure can obtain three types of retinal imaging images, which meets the requirements of different application scenarios and improves the application range of retinal imaging.

Large field-of-view adaptive optics retinal imaging system and method with common optical path beam scanning

A common beam scanning retinal imaging system comprises: a light source module (), an adaptive optics module (), a beam scanning module (), a small field-of-view relay module (), a large field-of-view relay module (), a sight beacon module (), a pupil monitoring module (), a detection module (), a control module () and an output module (). The system can perform real-time correction of human eye aberration by adaptive optics technology, and realize the confocal scanning imaging function in a large field of view and the adaptive optics high-resolution imaging function in a small field of view simultaneously by the common beam synchronous scanning configuration combined with the two relay optical path structures for both the small field of view and the large field of view. The system can not only observe disease lesions in a wide range on the retina by the large field-of-view imaging, but also observe fine structures of the lesions by the small field-of-view high-resolution imaging. A variety of imaging images are acquired by common path optical beam scanning to meet the needs of different application scenes, which greatly expands the application range of the existing confocal imaging equipment.

Retina imaging system based on the common beam scanning

A method for drivable area detection and autonomous obstacle avoidance of unmanned haulage equipment in deep confined spaces is disclosed, which includes the following steps: acquiring 3D point cloud data of a roadway; computing a 2D image drivable area of the coal mine roadway; acquiring a 3D point cloud drivable area of the coal mine roadway; establishing a 2D grid map and a risk map, and performing autonomous obstacle avoidance path planning by using a particle swarm path planning method designed for deep confined roadways; and acquiring an optimal end point to be selected of a driving path by using a greedy strategy, and enabling an unmanned auxiliary haulage vehicle to drive according to the optimal end point and an optimal path. Images of a coal mine roadway are acquired actively by use of a single-camera sensor device.

Method for drivable area detection and autonomous obstacle avoidance of unmanned haulage equipment in deep confined spaces

A quantum data erasure method, system and device, and a readable storage medium. The method includes: acquiring an equal-probability quantum state system; measuring the equal-probability quantum state system to collapse the equal-probability quantum state system into a binary random number sequence; generating a corresponding random angle value according to the binary random number sequence; and performing a bitwise rotation operation on quantum data in a quantum device according to the random angle value to complete this quantum data erasure. In the present application, the introduction of a quantum true random number can ensure that erased data will not be recovered and reversely cracked, and is of great value in protecting data assets; moreover, randomly processed data still has the characteristics such as quantum coherence and quantum entanglement, and can be used in subsequent operations, whereby a time-consuming labor-intensive process of preparing a quantum system is not required every time.

Quantum data erasure method, system and device, and readable storage medium

A data center 5-Generation (5G) network encrypted multicast-based authority authentication method, system, and device, and a medium. In the present disclosure, authority authentication and data connection are performed on each platform of a data center by 5G network encrypted multicast, and a network encrypted multicast component is configured on the platform of the data center. An encrypted multicast packet is sent to a network by the platform. Connection is completed by handshaking and mutual heartbeat transmission between the platforms. Authority verification is performed through the multicast packet. In this manner, the problem of security risk of traditional authority authentication may be reduced, and the intercommunication speed and efficiency of each platform of the data center may be improved greatly.

Data center 5G network encrypted multicast-based authority authentication method and system

The present disclosure discloses a method for the magnetism stabilizing treatment of a permanent magnet material. The method can include the following steps: providing a permanent magnet material having a positive temperature coefficient of coercivity; magnetizing the permanent magnet material at a temperature Twith a range of &#x2212;200 degree centigrades to 200 degree centigrades; and performing a magnetism stabilizing treatment towards the permanent magnet material with temperature decreased in a range of the temperature Tto a temperature T, or at the temperature T.

Magnetization stabilizing treatment method for permanently magnetizable material

The present invention discloses an aspheric lens eccentricity detecting device based on wavefront technology and a detecting method thereof. The device comprises: an upper optical fiber light source, an upper collimating objective lens, an upper light source spectroscope, an upper beam-contracting front lens, an upper beam-contracting rear lens, an upper imaging detector, an upper imaging spectroscope, an upper wavefront sensor, a lens-under-detection clamping mechanism, a lower light source spectroscope, a lower beam-contracting front lens, a lower beam-contracting rear lens, a lower imaging spectroscope, a lower wavefront sensor, a lower imaging detector, a lower collimating objective lens and a lower optical fiber light source. The present invention achieves non-contact detection, with no risk of damaging the lens, and there is no moving part in the device, so the system reliability and stability are high; and in the present invention, various eccentricity errors in the effective aperture of the aspheric lens can be detected at a time, thereby avoiding errors caused by splicing detection, and also greatly reducing the detection time, thus being applicable to online detection on an assembly line.

Aspheric lens eccentricity detecting device based on wavefront technology and detecting method thereof

The microobjective optical system and the optical device provided in the present disclosure use a catadioptric structure. Specifically, a catadioptric relay lens group and a complex transmissive collimating lens group are combined to effectively correct a higher-order spherical aberration, and control astigmatism, field curvature, and primary and higher-order coma related to a field of view. In a spectrum band ranging from 320 nm to 800 nm, the field of view is larger than 2 mm, a numerical aperture is 1.0, and imaging quality reaches a diffraction limit.

Microobjective optical system and optical device

The present disclosure discloses a high-temperature-stability permanent magnet material and an application thereof. The microstructure of the permanent magnet material comprises a first magnetic phase and a second magnetic phase; the first magnetic phase is a magnetic phase with uniaxial anisotropy, and the second magnetic phase is a magnetic phase with spin reorientation transition; and the first magnetic phase and the second magnetic phase are isolated from each other; and the absolute value of the temperature coefficient of saturation magnetization intensity of the first magnetic phase is less than 0.02%/&#xb0; C. By means of the permanent magnet material comprising the first magnetic phase and the second magnetic phase, a positive temperature coefficient of coercivity can be obtained, so that obtaining a low temperature coefficient of coercivity can be targeted, regular and universal.

High-temperature-stability permanent magnet material and application thereof

A semiconductor laser is disclosed. Trim loss region is provided in inner ridge region of surface of transmission layer facing away from substrate, blind hole is provided in trim loss region, and distance from bottom surface of blind hole to surface of second cladding layer facing to substrate is smaller than evanescent wave length in transmission layer. Blind hole can affect optical field characteristics of light transmission in semiconductor laser by affecting evanescent wave. A method for fabricating a semiconductor laser is also provided.

Semiconductor laser and fabrication method thereof

A device for cage jamming buffer of large-tonnage hoisting system of ultra-deep shaft is provided. End cage jamming buffer mechanisms are added at both ends of an automatic wire rope tension balancing mechanism, wherein the end cage jamming buffer mechanisms include an end buffer module and an end fixing module, and the end buffer module and the end fixing module are respectively mounted on shafts of the automatic wire rope tension balancing mechanisms at two ends. The end buffer module mainly consists of a buffer bearing pedestal, a limit block, a buffer block, and a stop block sequentially mounted on the shaft of the automatic wire rope tension balancing mechanism at one end. The end fixing module mainly consists of a fixing bearing pedestal and a fixing block mounted on the shaft, wherein the fixing bearing pedestal is connected to a transmission gear by an adjusting bolt.

Device for cage jamming buffer of large-tonnage hoisting system of ultra-deep shaft

A hydro-viscous speed regulating device for heavy-load start of a belt conveyor is provided. An input shaft and an output shaft are connected through a spline tube, an inner friction plate set, and an outer friction plate set. The inner and outer friction plate sets are controlled by an inner oil cylinder and an outer oil cylinder respectively. Oil inlet and oil return of the inner oil cylinder and the outer oil cylinder are controlled by an oil inlet valve core and an oil return valve core automatically. During starting process, pressure oil enters into the outer oil cylinder, and pushes the outer friction plate set to be engaged to provide torque required by the output shaft. After the starting process is completed, the revolving speed of the output shaft rises; the oil inlet valve core and the oil return valve core move outward under the effect of a centrifugal force; the pressure oil enters into the inner oil cylinder and pushes the inner friction plate set to be engaged to provide torque required by the output shaft, and at the same time, oil returns to the outer oil cylinder. That is, during starting process, the outer friction plate set provides large torque required for start, and the inner friction plate set provides small torque during normal operation. The present invention achieves automatic switching between different torque required for start and normal operation. Moreover, the present invention has a compact structure, reliable performance, and low costs, and is applicable in a wide range.

Hydro-viscous speed regulating device for heavy-load start of belt conveyor

A movable belt breakage prevention and catching system for a belt conveyor includes a detection device, two tracks, a plurality of catching devices, and a control system. The detection device is mounted on the belt conveyor, and is configured to detect whether a belt of the belt conveyor has a crack. The two tracks are symmetrically arranged on both sides of the belt conveyor, and the plurality of catching devices are symmetrically arranged on the two tracks. The control system is configured to control the plurality of catching devices to simultaneously catch the belt firmly when the detection device detects that the belt has a crack; and after firmly catching the belt, each catching device is able to unidirectionally move along with the belt along the track where the catching device is positioned.

Movable belt breakage prevention and catching system for belt conveyor

Growing community of inventors

Jiangsu, China

Xin Zhang