baber/WOPTO huggingface dataset:
Patent WO-2020019919-A1 (WO)
Title: Method for homogeneous precipitation separation of iron and aluminum from laterite nickel ore acid leaching solution
Inventor: MA BAOZHONG
IPC: C22B3/44
Filed: 2019-06-24
Abstract: Disclosed is a method for the homogeneous precipitation separation of iron and aluminum from a laterite nickel ore acid leaching solution, wherein the present invention belongs to the technical field of nonferrous metal wet metallurgy. The present invention comprises: finely grinding calcium carbonate or magnesium carbonate and mixing same with water in a certain ratio, and uniformly stirring same to prepare a calcium carbonate milk or a magnesium carbonate milk as a precipitating agent; transferring the precipitating agent to a homogeneous reactor via a pipe provided with a rate control device and installing a refiner at an outlet end for refining the precipitating agent; conveying a laterite nickel ore acid leaching solution to the homogeneous reactor via a pipe provided with a rate control device, and installing an atomizer at an outlet end for atomizing the acid leaching solution, wherein the controlled-rate atomized laterite nickel ore acid leaching solution and the controlled-rate refined precipitating agent are homogeneously reacted in the homogeneous reactor to obtain a post-reaction slurry; and filtering the reaction slurry to obtain a liquid remaining after iron aluminum removal and a sand-like iron-aluminum residue. The method has a simple process, a high reliability and easy industrialization, can effectively realize the separation of iron and aluminum from the red earth nickel ore acid leaching solution, and has broad application prospects.
Patent WO-2020258309-A1 (WO)
Title: 智能水面安全警示浮标阵列及其使用方法
Inventor: LIU HAOYUAN
IPC: B63B22/18
Filed: 2019-06-28
Abstract: 一种智能水面安全警示浮标阵列，浮标阵列包括多个浮标（10），每个浮标（10）包括移动主体（1），移动主体（1）漂浮在水面上，移动主体（1）上设置有：推进模块（2），位于移动主体（1）下方，被配置为用于推进移动主体（1）运动；定位模块（3），被配置为用于定位浮标（10）的坐标；测距模块（8），位于移动主体（1）下方，被配置为用于测定水面至水底的距离；无线通讯模块（4），被配置为用于与管理中心和其他浮标（10）进行通讯。通过动态调整浮标（10）位置，在水中圈定一片安全水域。
Patent WO-2020020077-A1 (WO)
Inventor: LI WEI
IPC: G09G3/20
Filed: 2019-07-19
Abstract: 一种显示优化及显示驱动方法及装置、显示装置、存储介质。显示优化方法包括：选取显示面板(100)的异形边缘(302,502,602,702,901)，计算异形边缘(302,502,602,702,901)经过的像素单元(301,501,701,900)的显示区域(601)的面积与像素单元(301,501,701,900)的面积的面积比值(S201)；根据面积比值确定像素单元(301,501,701,900)的灰阶参数(S202)。显示优化方法可以对具有异形边缘(302,502,602,702,901)的显示面板(100)的边缘部分像素单元(301,501,701,900)进行合理设置，改善显示效果。
Patent WO-2020020217-A1 (WO)
Inventor: QU MINGHAO
IPC: H01L31/18
Filed: 2019-07-24
Abstract: L'invention concerne une couche tampon d'une puce de cellule solaire à couche mince de cuivre-indium-gallium-sélénium et son procédé de fabrication, et une puce de cellule solaire à couche mince de cuivre-indium-gallium-sélénium. La couche tampon est une couche tampon de sulfure de cadmium pour dépôt sur une couche d'absorption de cuivre-indium-gallium-sélénium de la puce de cellule solaire à couche mince de cuivre-indium-gallium-sélénium, et la couche tampon de sulfure de cadmium comprend une couche de CdS développée de manière épitaxiale sur la couche d'absorption, et une couche de CdS nanocristalline éloignée de la couche d'absorption.
Patent WO-2020134069-A1 (WO)
Inventor: ZENG MIAO
IPC: H04B10/07
Filed: 2019-07-30
Abstract: 一种PON中实现通道自适应的方法及相关设备，其中该方法之一包括：在进行数据传输的过程中，当光线路终端OLT发现的新ONU的序列号SN与已经注册的ONU的序列号相同时，通知所述ONU重新开始通道注册。
Patent WO-2020024948-A1 (WO)
Title: Message transmission method and apparatus
Inventor: LI YONGCUI
IPC: H04L47/80
Filed: 2019-07-30
Abstract: Provided by the present application are a message transmission method and apparatus. The method comprises: a first device supporting a first protocol layer, the first device copying a message in the first protocol layer, a second device supporting a second protocol layer, and the second device de-duplicating the message in the second protocol layer. A first access device coverts the serial number of the first protocol layer in a first message message into the serial number of the second protocol layer when receiving the first message, and then transmits a second message carrying the serial number of the second protocol layer and a data packet of the first message to the second device. For example, when two messages of data packets having the same message are received, a first access network device converts the serial numbers in the two messages respectively without needing to execute operations of first de-duplicating and then duplicating the messages, thus reducing the overhead of the first access network device.
Patent WO-2020029924-A1 (WO)
Title: Transmission resource sharing
Inventor: GARCIA VIRGILE
IPC: H04W4/10
Filed: 2019-08-05
Abstract: Methods for providing fair access to shared transmission resources between multiple devices. A set of devices belonging to a group select a common value for a contention window size to enable fair competition with other unrelated devices for transmission resources.
Patent WO-2020029932-A1 (WO)
Title: Method for data storage, system, device, and storage medium
Inventor: WANG ZHIWEN
IPC: G06F16/901
Filed: 2019-08-06
Abstract: Provided are a method for data storage, a system, a device, and a storage medium. The method comprises: storing locally at nodes of a blockchain network a global index table corresponding to Merkel trees of blocks, and the Merkel trees of the blocks. The version number of a version is a block height. The global index table is used for data query on the basis of the block height. The present invention, by configuring for the Merkel trees the corresponding global index table having the block height as the version number, provides the system with a data query path with which the global index table can be queried directly via the block height and the query can be completed via a single instance of read operation, thus significantly increasing the data reading performance of the system; and further optimizes the robustness of the system during transaction congestion or node collapse.
Patent WO-2020029989-A1 (WO)
Inventor: HONG SHEN
IPC: H05K5/02
Filed: 2019-08-07
Abstract: 本发明公开了一种装饰薄膜，其包括承载层和纹理结构。承载层包括相对设置的第一表面和第二表面。纹理结构设置于承载层的第一表面。第一表面定义复数点位，纹理结构于各点位设置有呈现光影亮点的点纹和位于点纹之间起配色作用的配色纹。通过点纹的设置，装饰薄膜刻呈现复数光影亮点，从而具有独特的装饰效果，且辨识度较高。并通过配色纹的设置，使得装饰薄膜的光影亮点不耀眼，视觉效果更佳。
Patent WO-2020155606-A1 (WO)
Inventor: CHEN ZHENGHAO
IPC: G06V10/764
Filed: 2019-08-15
Abstract: The present disclosure relates to a facial recognition method and device, an electronic equipment and a storage medium. The method comprises: extracting attribute features from an image to be processed comprising a target object to obtain a number N of attribute features of the target object, wherein N is an integer greater than 1; extracting, on the basis of an attention mechanism, attention features from the image to be processed to obtain N attention features of the target object; clustering the N attention features to obtain a number M of clustered attention features, wherein M is a positive integer and satisfies M<N; and determining the facial recognition result for the target object according to the N attribute features and the M clustered attention features.
Patent WO-2020052480-A1 (WO)
Title: Unmanned driving behaviour decision making and model training
Inventor: DING SHUGUANG
IPC: G06K9/62
Filed: 2019-09-04
Abstract: Provided are a method and apparatus for unmanned driving behaviour decision making and model training, and an electronic device. The method comprises: acquiring sample data, wherein the sample data comprises a sample image; extracting a sample feature vector corresponding to the sample data, wherein a feature vector of the sample image is extracted by means of manifold dimension reduction; and based on the sample feature vector, performing training by means of semi-supervised learning to obtain a target decision making model, wherein the target decision making model is used for decision making and classification.
Patent WO-2021051405-A1 (WO)
Title: Vehicle control method, vehicle control device, vehicle, and computer readable storage medium
Inventor: SHANG ZHIMENG
IPC: G01C21/28
Filed: 2019-09-20
Abstract: A vehicle control method, a vehicle control device, a vehicle, and a computer readable storage medium. The vehicle control method is used to control a vehicle. The vehicle comprises a steering wheel (120) and a non-steering wheel (130). The vehicle control method comprises: acquiring position information and speed information of a reference point of a vehicle, the reference point being located in a stable region of the vehicle, the stable region comprising: a point on the axis (150) of the non-steering wheel (130) and a region on the side of the axis (150) of the non-steering wheel (130) away from the center of gravity (110) of the vehicle; and controlling, according to the position information and the speed information of the reference point, the steering wheel (120) to move in the direction toward the non-steering wheel (130), so as to control the vehicle to move in the direction from the steering wheel (120) to the non-steering wheel (130).
Patent WO-2020248470-A1 (WO)
Inventor: WANG PENG
IPC: G02F1/01
Filed: 2019-10-25
Abstract: The present invention relates to an SMD LED lamp bead emitting polarized light and a method for batch manufacturing same. The LED lamp bead contains an SMD LED lamp bead support and N LED light-emitting wafers on an inner bottom face of the SMD LED lamp bead support, a layer of a polarizing film is arranged above the LED light-emitting wafers, and first light-transmitting glue is filled between the inner bottom face of the support and a lower surface of the polarizing film. The method for batch manufacturing the LED lamp bead is as follows: 1. mounting the N LED light-emitting wafers on the inner bottom face of each support in an SMD LED lamp bead support matrix; 2. filling each support with the first light-transmitting glue, and performing baking; 3. extracting a small polarizing film in a polarizing film matrix, and pasting the small polarizing film on the first light-transmitting glue in each support; 4. separating the supports to form independent lamp beads; and 5. light-splitting and braiding the lamp beads. The LED lamp bead of the present invention can emit polarized light, the manufacturing procedures of a three-dimensional LED display screen are reduced, and lamp beads with the same polarization direction can be woven together to be in the same position direction in the method for batch manufacturing, thereby facilitating the manufacturing of the three-dimensional LED display screen.
Patent WO-2020125207-A1 (WO)
Inventor: FENG ZHANPENG
IPC: G06Q30/02
Filed: 2019-10-29
Abstract: An information promotion method and a related apparatus, the method comprising: acquiring a first image, the first image being an image photographed by a photographic apparatus corresponding to a display screen in a shopping mall (S101); detecting whether a trademark is present in the first image (S102); when detecting that a trademark is present, determining feature information of at least one first trademark in the first image (S103); looking up a second trademark matching the feature information of each first trademark in a trademark information database (S104); and displaying promotion information corresponding to the second trademark on the display screen, the promotion information comprising position information of the product corresponding to the second trademark in the shopping mall (S105). The technical solution of the present method can solve the problem of the effect of information promotion not being good enough.
Patent WO-2020134544-A1 (WO)
Inventor: WEN ERLONG
IPC: H01M10/058
Filed: 2019-10-31
Abstract: 一种直驱卷绕换位装置，其由卷针组件(4)、卷绕装置本体(1)、设置于上述卷绕装置本体(1)的第一随动盘(2)以及第二随动盘(3)等几部分构成。第一随动盘(2)直接由直驱电机(5)进行驱动，进而带动第二随动盘(3)作同步旋转运动。这样一来，改变了传统的电机偏置、齿轮驱动的方式，从而使得整个卷绕装置受力平衡，且大大降低了工作噪音。另外，还可以通过控制直驱电机(5)直接实现第一随动盘(2)及第二随动盘(3)的"随停"动作，具有较高的控制精度，且无须额外设置控制旋转角度的限位装置。
Patent WO-2020151293-A1 (WO)
Title: Parameter optimization method for expressway travel time estimation model
Inventor: LV WEITAO
IPC: G08G1/052
Filed: 2019-11-01
Abstract: Disclosed is a parameter optimization method for an expressway travel time estimation model. The method comprises: constructing, based on a road section travel time estimation model, a route travel time estimation model including a plurality of road sections; optimizing model parameters l, m and α by means of a genetic algorithm; defining a genetic algorithm fitness function, wherein Wj is a weight of an error index MAj, j is a time interval of travel time estimation, a value range thereof is [2, K], and an optimization target of the genetic algorithm is that the fitness function is the minimum; calculating the weight Wj by means of an M-H algorithm; outputting optimal parameter combinations [l, m, α] in a free flow state and in a congested state by means of the genetic algorithm; and then establishing an optimized route travel time estimation model. In the method, the parameters of a travel time estimation model are automatically optimized, such that the sensitivity of the model in different traffic operation states such as a congested state and an unobstructed state is improved, the travel time estimation precision in a congested situation is significantly improved, and the reliable and stable performance of the model is guaranteed.
Patent WO-2020088690-A1 (WO)
Title: Table maintenance for hmvp candidate storage
Inventor: ZHANG LI
IPC: H04N19/50
Filed: 2019-11-04
Abstract: The disclosure relates to table maintenance for HMVP candidate storage. Amethod for processing video, comprising: determining, during a conversion between a first block of visual media data and a corresponding coded representation of the visual media data, the first block being coded with geometry partition mode; determining, based on at least one table storing history based motion vector prediction (HMVP) candidates which include motion information based on previously coded blocks, motion information of at least one sub-portion of the first block; performing the conversion of the first block using the determined motion information.
Patent WO-2021087911-A1 (WO)
Title: 多tb交替传输处理方法及装置、通信设备及存储介质
Inventor: MU QIN
IPC: H04W4/70
Filed: 2019-11-07
Abstract: 本申请实施例提供了一种多TB交替传输处理方法及装置、通信设备及存储介质。所述多TB交替传输处理方法，可包括：确定多TB交替传输中的交替传输单元的粒度，其中，所述交替传输单元的粒度为：在所述交替传输单元中一个TB的重复传输次数；基于所述交替传输单元的粒度，确定传输第j个TB的绝对子帧i，其中，所述j为正整数，所述i为0或正整数；根据单TB跳频传输的第一跳频间隔，确定所述多TB交替传输的第二跳频间隔；根据所述第二跳频间隔，确定所述绝对子帧i传输所述第j个TB所使用的窄带。
Patent WO-2021092826-A1 (WO)
Title: Method of performing programming operation and related memory device
Inventor: JIA XINLEI
IPC: G11C16/10
Filed: 2019-11-14
Abstract: A method of performing a programming operation to a three dimensional (3D) NAND memory device is disclosed. The method makes residual electrons trapped in storage regions of middle dummy memory cells of the unselected string of the 3D NAND memory device to be removed during the pre-charging phase, so as to reduce program disturb to the selected string which neighbors the unselected string.
Patent WO-2021008049-A1 (WO)
Title: 一种烟弹、用于获取烟油信息的单线通信电路及方法
Inventor: TAN WANGLIANG
IPC: A24F47/00
Filed: 2019-11-20
Abstract: 本发明公开了一种烟弹、用于获取烟油信息的单线通信电路及方法，该烟弹包括与雾化芯组件电连接的电极组件，电极组件包括转接电路板、及分别设于转接电路板上的MCU、雾化芯正极触点、雾化芯负极触点、电源触点和通信触点；雾化芯正负极触点分别连接外部电源正负极，通过转接电路板分别与雾化芯组件的正负极引脚电连接；电源触点连接外部电源为MCU供电，MCU内设有用于存储烟油信息的EEPROM，外部控制器通过通信触点与EEPROM进行单线双向通信。
Patent WO-2021102615-A1 (WO)
Title: 虚拟现实场景及其交互方法、终端设备
Inventor: XU SHOUXIANG
IPC: G06F3/01
Filed: 2019-11-25
Abstract: 一种虚拟现实场景及其交互方法、终端设备，其中，该虚拟现实场景包括虚拟环境智能体、虚拟角色智能体及语义路径处理单元；语义路径处理单元，用于构建语义路径，该语义路径为绘制在所述虚拟环境智能体的几何图形上的由节点和所述节点之间的有向连接组成的轨迹，节点的信息至少包括节点位置信息、节点行为语义信息及节点环境语义信息；虚拟角色智能体，用于获取语义路径，根据自身任务及所述语义路径进行移动及执行目标动作；虚拟环境智能体，用于根据虚拟角色智能体在语义路径的节点的目标动作的信息得到动作结果信息，并指示语义路径处理单元更新语义路径的节点环境语义信息，能够有效地实现虚拟现实场景中的交互。
Patent WO-2021051652-A1 (WO)
Title: Tunable cylindrical metasurface device for magnetic resonance imaging and preparation method
Inventor: ZHAO QIAN
IPC: G01R33/36
Filed: 2020-05-13
Abstract: Disclosed are a tunable cylindrical metasurface device for magnetic resonance imaging and a preparation method. The device comprises: a printed circuit board, a variable capacitor, annular guide pieces, and a cylindrical support. The printed circuit board comprises a dielectric plate and a first electrode and second electrodes respectively disposed at the front and the back of the dielectric plate, and orthographic projections of the second electrodes on the dielectric plate are located at two ends of an orthographic projection of the first electrode on the dielectric plate, so as to form a parallel-plate capacitor; the variable capacitor is connected in parallel to the parallel-plate capacitor; a first annular guide piece and a second annular guide piece are provided at two ends of the device, and the first annular guide piece and the second annular guide piece are respectively connected to the second electrodes at two ends; the cylindrical support is used for enabling the printed circuit board to be stably and regularly arranged in a circumferential array and generating an imageable area. The device is designed to better conform to the human body form, and can be suitable for MRI detection of objects to be detected having different load effects.
Patent WO-2020119483-A1 (WO)
Inventor: CAO YONGZHAO
IPC: H04W28/02
Filed: 2019-11-29
Abstract: 本申请提供了一种数据传输方法和装置，该方法包括：第二节点接收来自第一节点的数据，该第二节点为该第一节点的至少两个候选下一跳节点中的一个；该第二节点根据优先级信息，发送上述数据，和/或，发送第一控制信息，该优先级信息用于表示该第二节点在该至少两个候选下一跳节点中对该数据的发送优先级。本申请实施例的数据传输方法和装置，有利于提高无线网络的吞吐量，进而提高数据传输性能。
Patent WO-2020114513-A1 (WO)
Title: An encoder, a decoder and corresponding methods of boundary strength derivation of deblocking filter
Inventor: WANG BIAO
IPC: H04N19/172
Filed: 2019-12-07
Abstract: Apparatuses and methods for encoding and decoding are provided. The method includes determining whether at least one of two blocks is predicted by application of combined inter-intra prediction (CIIP), wherein the two blocks include a first block (block Q) and a second block (block P), and wherein the two blocks are associated with a boundary. The method further includes setting a boundary strength (Bs) of the boundary to a first value when at least one of the two blocks is predicted by application of CIIP; or setting a boundary strength (Bs) of the boundary to a second value when none of the two blocks is predicted by application of CIIP.
Patent WO-2020119618-A1 (WO)
Inventor: ZHANG YULAN
IPC: G06T7/00
Filed: 2019-12-09
Abstract: 一种基于纹理特征融合的图像修复检测方法，包括以下步骤：将待检测图像转为灰度图；逐像素提取图像纹理特征；计算所述灰度图的图拉普拉斯在图像照度方向上的变化量；对所述变化量再次逐像素提取纹理特征；融合所有提取的纹理特征，形成融合特征；将所述融合特征输入分类器进行判决；移除异常点，得到检测结果。利用纹理特征实现对图像修复的检测，检测效果优于常规检测方法，尤其针对较小尺寸的图像块修复具有较好的检测效果,并且对JPEG压缩图像的修复检测也具有较好的鲁棒性。
Patent WO-2021051671-A1 (WO)
Title: Injection molding machine having linear guide rail protection function
Inventor: CAI YAOBIN
IPC: B29C45/17
Filed: 2019-12-10
Abstract: An injection molding machine having a linear guide rail protection function. The injection molding machine (1) comprises a plurality of linear guide rails (2) and a sliding mounting plate (3); guide rail holes (4) are formed at the positions of the linear guide rails (2) on the sliding mounting plate (3); fixed sleeves (5) are fixedly provided on the inner sides of the guide rail holes (4); rotating sleeves (6) are provided on the inner sides of the fixed sleeves (5); a plurality of A rotating steel ball sliding grooves (7) are formed on the inner sides of the fixed sleeves (5); B rotating steel ball sliding grooves (8) are formed on the positions of the A rotating steel ball sliding grooves (7) on the outer sides of the rotating sleeves (6); the inner sides of the A rotating steel ball sliding grooves (7) are rotatably provided with a plurality of rotating steel balls (9) that are uniformly distributed; the other sides of the rotating steel balls (9) all are rotatably connected to the inner sides of the B rotating steel ball sliding grooves (8). By providing the fixed sleeves (5), the rotating sleeves (6), the rotating steel balls (9), load-bearing steel balls (13), load-bearing sleeves (10), and a sealing ring (19), the injection molding machine has a strong protection function and an automatic cleaning function.
Patent WO-2020135138-A1 (WO)
Title: 沟槽栅igbt及装置
Inventor: LAN HAO
IPC: H01L29/739
Filed: 2019-12-17
Abstract: 一种沟槽栅IGBT及装置，该沟槽栅IGBT包括发射极、p阱区、栅极、栅极氧化层、漂移区和背部集电极，该栅极位于沟槽内，栅极与发射极、p阱区和漂移区之间由栅极氧化层隔离，该沟槽设置在衬底内部，该沟槽与漂移区的边界具有多个凹陷。在沟槽栅IGBT开关过程中，该沟槽的侧面与漂移区的界面上具有多个凹陷栅极氧化层，可以束缚和积累电子电荷，从而提高导通能力，解决现有技术中沟槽栅IGBT的开关功耗过高的技术问题，以起到减小沟槽栅IGBT的开关功耗的有益效果。
Patent WO-2021128379-A1 (WO)
Inventor: GAO ANG
IPC: B01F7/16
Filed: 2019-12-28
Abstract: An automatic printing paste stirrer, comprising a stirrer body (1), support legs (2), a groove (3), a hydraulic rod (4), a first pulley (5), a shell (6), a hydraulic station (7), a servo motor (8), a two-way gear pump (9), a hydraulic oil tank (10), a bracket (11), a sliding chute (12), a stirring station (13), a second pulley (14), a paste cup (15), a control switch (16), a control panel (17), stirring shafts (18), a suspended hood (19), universal pipes (20), illuminating lamps (21), lifting lugs (22), a connecting port (23), a negative pressure fan (24), an air delivery pipe (25), a processing box (26), an air inlet (27), and an air outlet (28). The hydraulic rod (4) is mounted in the groove (3); one end of the hydraulic rod (4) is mounted with the first pulley (5); the hydraulic station (7) is mounted at the inner side of the support leg (2); one side of the control switch (16) is mounted with the control panel (17); the suspended hood (19) is sleeved at the top of the stirring shaft (18); one end of the top of the shell (6) is mounted with the universal pipe (20); one end of the universal pipe (20) is mounted with the illuminating lamp (21); the lifting lugs (22) are welded at four corners of the top of the shell (6); the negative pressure fan (24) is mounted at one side of the connecting port (23); and one side of the connecting port (23) is connected to the processing box (26) by means of the air delivery pipe (25). The automatic printing paste stirrer has the advantages of convenient movement, high stability during work, easy transportation, and can improve the working environment, facilitate mixing effect observation, and is beneficial to enterprise production.
Patent WO-2020147570-A1 (WO)
Inventor: GAI BO
IPC: C12P1/04
Filed: 2019-12-30
Abstract: 本公开涉及赤红球菌产品在治疗白色念珠菌感染引起的疾病中的用途。具体而言，本公开提供了一种包含赤红球菌细胞壁或其成分的赤红球菌产品。向受试者施用该赤红球菌产品，有效减轻白色念珠菌感染引起的疾病和症状，白色念珠菌感染引起的疾病包括白色念珠菌感染引起的生殖器疾病、白色念珠菌感染引起的口腔黏膜疾病、白色念珠菌感染引起的皮肤疾病、白色念珠菌感染引起的消化道疾病。
Patent WO-2020147786-A1 (WO)
Title: 立式空调器室内机
Inventor: LI YINGSHU
IPC: F24F1/0022
Filed: 2020-01-16
Abstract: 一种立式空调器室内机，包括：壳体（310），其内部限定有空腔，壳体（310）上部和下部开设有出风口（320），中部设置有进风口（330）；两个层流风扇（100），设置于对应上部和下部出风口（320）的空腔内部，层流风扇（100）包括：多个环形盘片（10），彼此间隔地平行设置且具有相同的中心轴线，多个环形盘片（10）的中心共同形成有进风通道（11），空腔内的空气通过进风通道（11）进入多个环形盘片（10）之间的间隙；两个层流电机（20），分别与两个层流风扇（100）连接，层流电机（20）配置成驱动多个环形盘片（10）旋转，以使靠近多个环形盘片（10）表面的空气边界层（13）由内向外旋转移动，从而形成层流风由出风口吹出。层流风扇（100）通过粘性效应实现层流送风，送风过程噪音小、风量高。
Patent WO-2021146862-A1 (WO)
Title: Indoor positioning method for mobile device, mobile device and control system
Inventor: CUI YUWEI
IPC: G05D1/02
Filed: 2020-01-20
Abstract: An indoor positioning method for a mobile device (6), and the mobile device (6) and a control system (7, 8). The indoor positioning method comprises: acquiring a first image (C1) and a second image (C2) photographed by a camera apparatus (601, 801) at different positions respectively, wherein a pixel unit of the second image (C2) has a second image feature (b1, b3) matching a first image feature (a1, a2) in the first image, and the first image feature (a1, a2) and the second image feature (b1, b3) constitute an image feature pair; and determining position change information of the mobile device (6) between different positions according to the current spatial scale parameter and a pixel position offset of the image feature pair in the first image (C1) and the second image (C2). By means of the indoor positioning method, a mobile robot can be accurately positioned, thereby improving the positioning accuracy for the mobile robot.