baber/WOPTO huggingface dataset:
Patent WO-2018232977-A1 (WO)
Title: Method and device for correcting working state of terminal device
Inventor: DU GUANGDONG
IPC: H04L29/08
Filed: 2017-08-23
Abstract: The present invention relates to a method and device for correcting the working state of a terminal device, the method comprising: an aggregation unit receiving a data element that is reported by a routing node and parsing the data element to obtain device parameters and the device type for each terminal device which reports Internet of Things data; determining, from among all of the terminal devices which report Internet of Things data, at least one terminal device for which the device type is a device type that is of interest to the aggregation unit, and determining, from among said at least one terminal device, a target terminal device for which the device parameters do not match corresponding preset device parameters; and sending correction parameters to said target terminal device so as to trigger the target terminal device to correct the working state thereof according to said correction parameters. Implementing the embodiments of the present invention may automatically issue correction parameters to a terminal device which is working abnormally, thereby promptly correcting the working state of a terminal device in an abnormal state and facilitating the timely maintenance of an Internet of Things framework.
Patent WO-2019041110-A1 (WO)
Title: Flight control method, device and system
Inventor: HONG WEI
IPC: H04W4/021
Filed: 2017-08-28
Abstract: The present disclosure relates to a method, a device and a system for flight control, and belongs to the field of wireless communications. The method comprises: sending Message 3 to a base station, wherein the Message 3 is a message for requesting a radio resource control (RRC) connection, and the Message 3 carries an aerial vehicle identifier; receiving Message 4 sent from the base station, wherein the Message 4 is a message for notifying the aerial vehicle that the RRC connection is successful, and the Message 4 carries a no-fly zone range; and when the position of the aerial vehicle is within the no-fly zone range, performing a stop flight operation. With the present disclosure, the accuracy of deciding the range of the no-fly zone can be improved.
Patent WO-2018205459-A1 (WO)
Title: 获取目标用户的方法、装置、电子设备及介质
Inventor: WANG JIANZONG
IPC: G06Q30/02
Filed: 2017-08-30
Abstract: 一种获取目标用户的方法、装置、电子设备及介质，适用于信息处理技术领域。该获取目标用户的方法包括：通过社交平台获取分类列表信息，并根据所述分类列表信息生成目标特征信息（S101）；获取用户的社交账号发布的公开信息，并根据所述目标特征信息和各条所述公开信息确定与所述目标特征信息相关的公开信息（S102）；根据所确定的与所述目标特征信息相关的各条公开信息，确定所述用户是否为目标用户（S103）。上述方案能够快速准确地定位潜在目标用户，从而提高产品销量。
Patent WO-2019061203-A1 (WO)
Title: Method for acquiring change in facial attractiveness score, and terminal
Inventor: ZHAO JUN
IPC: G06K9/00
Filed: 2017-09-28
Abstract: Disclosed in an embodiment of the present invention are a method for acquiring a change in a facial attractiveness score, and a terminal. The method comprises: a terminal acquiring a first facial attractiveness score of a face in a first face image, and displaying the first facial attractiveness score on a user interface; the terminal performing, according to a facial beautification operation with respect to the first facial image performed by a user, facial beautification processing on the first facial image to obtain a second facial image; and the terminal acquiring a second facial attractiveness score of a face in the second facial image, and displaying the second facial attractiveness score on the user interface. The method for acquiring a change in a facial attractiveness score and the terminal provided in the embodiment of the present invention enable a user to obtain facial attractiveness scores before and after facial beautification so as to evaluate a result of the facial beautification. DRAWING: FIG. 1: S101 A terminal acquires a first facial attractiveness score of a face in a first face image, and displays the first facial attractiveness score on a user interface S102 The terminal performs, according to a facial beautification operation with respect to the first facial image performed by a user, facial beautification processing on the first facial image to obtain a second facial image S103 The terminal acquires a second facial attractiveness score of a face in the second facial image, and displays the second facial attractiveness score on the user interface
Patent WO-2018108130-A1 (WO)
Title: Procédé de préparation d'un nouvel antagoniste du récepteur des androgènes
Inventor: PAN TINGTING
IPC: C07D231/14
Filed: 2017-12-14
Abstract: L'invention concerne un procédé de préparation d'un nouvel antagoniste du récepteur des androgènes, comprenant essentiellement la mise en oeuvre d'une réaction de cyclisation d'un composé de formule V pour obtenir un composé de formule VI. Le procédé présente les avantages d'un matériau de départ facilement obtenu, d'un taux d'utilisation atomique élevé, de conditions de réaction modérées et d'un post-traitement simple. En plus, l'ODM-201 et ses isomères uniques peuvent être synthétisés de manière directionnelle par la commande de la stéréochimie du matériau de départ, avec les avantages d'un procédé simple et contrôlable et d'une aptitude pour une production industrielle.
Patent WO-2019061869-A1 (WO)
Title: Integrated rainwater treatment device
Inventor: TANG JIE
IPC: C02F9/14
Filed: 2017-12-18
Abstract: An integrated rainwater treatment device (18), comprising a well body (1) and a cover plate (2) located above the well body (1). An overflow wall (3) is provided at the bottom of the well body (1) from bottom to top, and the interior of the well body (1) is divided into a settlement area (A) and a filter-permeation area (B) by the overflow wall (3). A water inlet is formed on a cover plate (2) provided above the settlement area (A). A filter permeation medium is laid at the bottom of the filter-permeation area (B). An overflow pipe (12) is provided at the upper part of the sidewall of the well body (1) at the filter-permeation area (B). A perforated drain pipe (13) passing through the overflow wall (3) is provided between the settlement area (A) and the filter-permeation area (B). The perforated drain pipe (13) passes through the overflow wall (3) and extends into the filter permeation medium.
Patent WO-2018121330-A1 (WO)
Title: 一种检测方法、相关装置和系统
Inventor: ZHOU MINGCHUN
IPC: G01V11/00
Filed: 2017-12-19
Abstract: 本发明实施例公开了一种检测方法、相关装置和系统，检测服务器中配置有针对不同类型检测设备所对应的确定权重的检测模型，当获取到多个检测结果后，可以从该多个检测结果中确定出多个输入参数输入到所述检测模型中，检测模型根据检测设备类型所对应的确定权重以及根据检测设备的检测结果所确定的多个输入参数可以得到输出参数，通过对所述输出参数的分析可以得到针对所述指定区域中是否具有可移动体的确定结果，从而尽可能的减少单一类型检测设备由于技术局限性出现误判对用户体验所产生的不良影响，并有效的提高了检测的准确性。
Patent WO-2018127172-A1 (WO)
Title: Schéma de correspondance de débit destiné à des canaux de commande utilisant des codes polaires
Inventor: XU CHANGLONG
IPC: H04N19/00
Filed: 2018-01-08
Abstract: La présente invention concerne, de manière générale, selon certains aspects des communications sans fil et, plus particulièrement, des procédés et un appareil destinés à des canaux de commande d'adaptation de débit utilisant des codes polaires. Un procédé donné à titre d'exemple consiste d'une manière générale à coder un flux de bits à l'aide d'un code polaire, à déterminer la taille d'un tampon circulaire servant à stocker le flux codé de bits sur la base, au moins en partie, d'un débit de code supporté minimal et d'une taille d'informations de commande, et à effectuer une mise en correspondance de débit sur un flux codé stocké de bits sur la base, au moins en partie, d'une taille de code mère, N, et d'un nombre de bits codés pour transmission, E.
Patent WO-2018121796-A1 (WO)
Title: 一种带寻钉器的多功能螺丝批
Inventor: SUN SHIYU
IPC: B25B15/02
Filed: 2018-01-18
Abstract: 一种带寻钉器（3）的多功能螺丝批，手柄（1）头部安装开瓶器（4），还包括寻钉器，所述寻钉器与所述手柄的尾部末端螺纹连接；所述寻钉器包括尾盖（31）、万向节（32）、磁铁架（33）以及磁铁（34）；所述万向节的外圆壁相对的两侧各具有一凸圆（321），所述尾盖的内壁对应所述凸圆开设有通孔（311），所述万向节通过所述凸圆和所述通孔安装于所述尾盖中；所述磁铁架安装于所述万向节中，所述磁铁嵌设于所述磁铁架中；通过在螺丝批上安装寻钉器，通过寻钉器内部的磁铁寻找螺钉，当磁铁接近螺钉时，磁铁和螺钉之间产生磁力，万向节和磁铁架便会发生转动，螺钉的安装位置就能够被发现，开瓶器具有开启瓶盖等瓶类的作用，螺丝批不使用时，通过开瓶器直接挂在墙上即可。
Patent WO-2019119602-A1 (WO)
Inventor: KANG CHIH-TSUNG
IPC: G09G3/36
Filed: 2018-01-23
Abstract: 公开了一种显示装置的驱动方法、驱动装置及显示装置。该显示装置的驱动方法包括：为计算一分区内的所有子像素单元的平均信号，得出一分区第一平均信号、一分区第二平均信号、一分区第三平均信号；依据第一、第二及第三平均信号的灰阶对应预先定义范围，先执行第二伽马调整；使得第二大视角亮度比例相对于第一、第三大视角亮度低，颜色呈现中性色彩；以及调整对应第二光源亮度。
Patent WO-2018141228-A1 (WO)
Title: Économies d'énergie sensibles au contenu pour diffusion en continu et lecture de vidéo sur des dispositifs mobiles
Inventor: LIN ZONGFANG
IPC: H04N21/44
Filed: 2018-01-25
Abstract: La présente invention concerne un système, un support lisible par ordinateur et un procédé pour réduire la consommation d'énergie d'un dispositif mobile. Le procédé comprend les étapes consistant à : détecter un contenu vidéo à visualiser dans une application exécutée par le dispositif mobile; détecter un contenu non souhaité associé au contenu vidéo; et faire fonctionner le dispositif mobile dans un mode à basse consommation durant la lecture du contenu vidéo dans l'application en réponse à la détection du contenu non souhaité. Le dispositif mobile peut comprendre une mémoire stockant l'application et un processeur exécutant l'application, qui configure le processeur pour mettre en œuvre le procédé. Cinq techniques peuvent être appliquées dans le mode à basse consommation pour réduire la consommation d'énergie, à savoir : une adaptation dynamique de la tension et de la fréquence (DVFS), une réduction de la résolution du contenu, une réduction de la luminosité d'une unité d'affichage, un masquage de contenu et un ralentissement du fil d'exécution. Le mode à basse consommation économise de l'énergie lors de la lecture de vidéos sur le dispositif mobile.
Patent WO-2019148319-A1 (WO)
Title: Method for assigning ue identifier, network device, ue, and computer storage medium
Inventor: TANG HAI
IPC: H04W4/029
Filed: 2018-01-30
Abstract: Disclosed in the present invention are a method for assigning a user equipment (UE) identifier, a network device, a UE, and a computer storage medium. The method comprises: assigning, on the basis of a tracking area (TA) where a UE is located, unique identifier information within the TA to the UE; and sending, to the UE, the unique identifier information within the TA assigned to the UE.
Patent WO-2019148493-A1 (WO)
Title: Method for sending and receiving paging message, network device and user device
Inventor: TANG HAI
IPC: H04W68/00
Filed: 2018-02-05
Abstract: Disclosed in the present invention are a method for sending and receiving a paging message, a network device, a terminal device and a computer storage medium. The method comprises: upon triggering paging for a terminal device, determining, on the basis of the terminal type of the terminal device, whether to send the paging message to the terminal device in an interleaving manner.
Patent WO-2019144474-A1 (WO)
Inventor: LI YUANZHI
IPC: G06F3/0362
Filed: 2018-03-09
Abstract: 本发明公开了一种磁滚轮阻尼装置及其实现方法，装置包括磁滚轮和磁阻尼机构，所述磁滚轮包括第一多极磁铁，所述第一多极磁铁包括至少一对极性相反的磁极，所述磁阻尼机构采用磁阻尼磁铁或可被第一多极磁铁吸引的金属，所述磁阻尼磁铁或金属位于第一多极磁铁的磁场内且与磁滚轮间的距离可调。本发明用了由磁滚轮和磁阻尼机构组成的磁滚轮阻尼装置来取代传统的机械滚轮，只需通过调节磁滚轮与磁阻尼磁铁或金属间的距离就可以利用磁场作用力原理提供不同大小的磁阻力，满足了不同的滚轮滑顺程度要求，不需要使用不同的材质，灵活，通用性强，且磁场作用力无摩擦损耗，延长了滚轮的使用寿命。本发明可广泛应用于手写设备领域。
Patent WO-2019001028-A1 (WO)
Title: Vertical raise/lower bicycle parking rack
Inventor: GUO SHAOXIAN
IPC: B62H3/00
Filed: 2018-03-20
Abstract: Provided is a vertical raise/lower bicycle parking rack, comprising an upright column (100), a raising/lowering arm (200), a nitrogen gas spring (02), a first movable pulley assembly (0301), a second movable pulley assembly (0302), a wire rope (04), a first fixed pulley assembly (05), and a second fixed pulley assembly (06); the raising/lowering arm (200) comprises a stand (210) and a horizontal frame (220); the bottom of said stand (210) is provided with a base frame (230); making use of the attributes of steady speed of telescoping of the nitrogen gas spring (02) and low noise, the raising/lowering arm (200) is driven to lift and lower; when the raising/lowering arm (200) rises, the wire rope (04), under the driving force of the nitrogen gas spring (02), drives the base frame (230) to drive the raising/lowering arm (200) to rise; the base frame (230) has a compact structure, driving is stable, and skewing and jamming of the upright column (100) due to unbalanced force is not prone to occur.
Patent WO-2018196523-A1 (WO)
Title: 电子签收方法和装置
Inventor: ZHAO HONGYE
IPC: G06Q10/08
Filed: 2018-03-23
Abstract: 本申请公开了电子签收方法和装置。该方法的一具体实施方式包括：响应于接收到签收请求，获取所定位的当前地址信息和待签名的电子签名图片，其中，电子签名图片包括收货地址信息；将当前地址信息转换成第一经纬度数据，并将收货地址信息转换成第二经纬度数据；根据第一经纬度数据和第二经纬度数据确定当前地址信息和收货地址信息的距离；若距离大于预设的阈值，则向拟收货的用户的终端发送第一验证码并接收用户基于第一验证码输入的第二验证码；响应于确定出第二验证码与第一验证码一致，接收用户在电子签名图片上输入的签名数据。该实施方式实现了简单快捷地物流签收，并且能有效预防代签，保护收货人的隐私。
Patent WO-2019183792-A1 (WO)
Title: Method for returning to high-standard network from low-standard network, and communication apparatus
Inventor: WEI ZHENRONG
IPC: H04W88/06
Filed: 2018-03-27
Abstract: The present application provides a method for returning to a high-standard network from a low-standard network, and can solve the problem that a main card of a terminal device in a dual-card dual-standby single-pass mode cannot return to a high-standard network after falling back to a low-standard network from the high-standard network during a data service. The method comprises: detecting that a first subscriber identification module (SIM) card of a terminal device falls back to a second standard network from a first standard network; acquiring the registration state of a second SIM card, the registration state comprising the operator of the second SIM card and the network on which the second SIM card resides, the first SIM card and the second SIM card enabling the terminal device to operate in a dual-card dual-standby single-pass mode; acquiring a target standard network according to the registration state of the second SIM card; registering the first SIM card into the target standard network.
Patent WO-2019148643-A1 (WO)
Inventor: WANG XIAOFAN
IPC: H01M10/04
Filed: 2018-04-04
Abstract: 本实用新型涉及一种汇流排以及电池模组。汇流排，用于与单体电池的电极极柱电连接，其包括：条状主体，条状主体包括沿自身长度方向相继分布的至少两个连接部，每个连接部能够与电极极柱的顶端电连接；限位支脚，与条状主体相连接、且与条状主体相交设置，限位支脚在条状主体的厚度方向上延伸，限位支脚用于对条状主体限位，以使连接部与电极极柱相对位置不变。本实用新型的汇流排能够实现自限位，不需要额外使用夹具或限位构件对汇流排进行限位，就能够保证汇流排自身与电极极柱彼此相对位置不变，便于汇流排与电极极柱连接固定。
Patent WO-2018196595-A1 (WO)
Title: 一种立即回电的外呼方法和装置
Inventor: LI GUANSHI
IPC: H04M3/523
Filed: 2018-04-10
Abstract: 本发明提供一种立即回电的外呼方法和装置、电子设备及计算机可读介质，能够解决现有预览式外呼方案无法高效地立即回电的问题，能够提升用户体验，提高坐席使用率，并减少定时任务频繁调度给系统增加的压力。本发明的立即回电的外呼方法包括：接收用户的立即回电请求，所述立即回电请求包括回电号码和提交的业务数据；根据预存的业务数据与坐席电话技能之间的映射关系，确定处理所述提交的业务数据的坐席；判断所述坐席中是否存在就绪坐席，若存在，则立即呼叫所述回电号码；否则，等待有所述就绪坐席时呼叫所述回电号码。
Patent WO-2019204993-A1 (WO)
Title: Data transmission method and device
Inventor: LI ZHENG
IPC: H04W72/04
Filed: 2018-04-24
Abstract: A data transmission method and device, the method comprising: determining a first frequency hopping sequence and a second frequency hopping sequence, the first frequency hopping sequence comprising M serial numbers which are in one-to-one correspondence to M virtual system frame number indexes in a virtual system frame number index set, and the second frequency hopping sequence comprising N serial numbers which are in one-to-one correspondence to N channels used for transmitting data; and transmitting data using one channel among the N channels within each time unit of each frequency hopping period according to the second frequency hopping sequence, the serial numbers of channels used by any two time units in each frequency hopping period being different, and N being a positive integer greater than 0. Since the serial numbers of channels used by any two time units in each frequency hopping period are different, each channel may be accessed once in one period, thus complying with unlicensed frequency spectrum regulations.
Patent WO-2019140803-A1 (WO)
Title: Gate driving circuit, driving method thereof, and display apparatus
Inventor: SUN JING
IPC: G09G3/36
Filed: 2018-04-25
Abstract: The present disclosure is related to a gate driving circuit. The gate driving circuit may include a first pull-up subcircuit; a second pull-up subcircuit; a first pull-down subcircuit; and a second pull-down subcircuit. The first pull-up subcircuit may be configured to output a high level to the output terminal under control of a first control signal of a first control signal terminal. The second pull-up subcircuit may be configured to output a high level to the output terminal under control of a second control signal of a second control signal terminal. The first pull-down subcircuit may be configured to pull down a level of the output terminal under control of the first control signal. The second pull-down subcircuit may be configured to pull down the level of the output terminal under control of the second control signal.
Patent WO-2018223796-A1 (WO)
Title: 语音识别方法、存储介质及语音识别设备
Inventor: RAO FENG
IPC: G10L15/18
Filed: 2018-05-07
Abstract: 一种语音识别方法，包括：在持续获取语音信号的过程中，获取当前账户对应的自定义语料（S213）；对该自定义语料进行分析处理，构建相应的至少一个自定义解码模型（S214）；将该至少一个自定义解码模型加载到预先存储的通用解码模型中，生成新的解码模型（S215）；对该语音信号采用该新的解码模型进行解码，获得语音识别结果（S216）。
Patent WO-2019062136-A1 (WO)
Title: Camera lens group
Inventor: LI MING
IPC: G02B13/00
Filed: 2018-05-11
Abstract: A camera lens group, comprising in order from an object side to an image side: a first lens (E1) which has a positive focal power and a convex object side surface (S1); a second lens (E2) which has a positive focal power; a third lens (E3) which has a focal power; a fourth lens (E4); a fifth lens (E5) which has a focal power, a concave object side surface (S9) and a convex image side surface (S10); a sixth lens (E6) which has a focal power and a concave image side surface (S12); and a seventh lens (E7) which has a negative focal power and a concave image side surface (S14). The relationship between the effective focal length f of the camera lens group and the entrance pupil diameter (EPD) of the camera lens group meets: f/EPD≤1.60. The camera lens group may be applied to portable electronic products and is an optical system which has a large aperture, good imaging quality and low sensitivity.
Patent WO-2019184072-A1 (WO)
Inventor: YU MING-JIUE
IPC: H01L27/32
Filed: 2018-05-22
Abstract: La présente invention concerne un ensemble d'encapsulation, son procédé de préparation et un dispositif d'affichage, l'ensemble d'encapsulation comprenant : au moins une unité d'encapsulation, l'unité d'encapsulation comprenant une première couche inorganique, une seconde couche inorganique et une couche organique qui sont empilées en séquence, les matériaux de la première couche inorganique et de la seconde couche inorganique étant différents. Au moyen du procédé décrit, la présente invention peut réduire le nombre de trous au niveau de parties internes de couches de film, augmenter la densité de couches de film, bloquer efficacement l'humidité, et améliorer un effet d'encapsulation.
Patent WO-2019222983-A1 (WO)
Title: Massage sock
Inventor: LI BAONING
IPC: A41B17/00
Filed: 2018-05-24
Abstract: Disclosed is a massage sock, comprising a sock body (1), a sock front (2) and a sock heel (3), wherein the sock body (1) is divided into an instep part (4) and a sole part (5); the lining of each of the sock body (1), the sock front (2) and the sock heel (3) is a sweat-absorbent breathable layer (6); a shock-absorbing layer (7) further covers an outer surface of the lining of the sock heel (3); a protective layer (8) further covers an outer surface of a toe part of the sock front (2); acupuncture point marks (9) are embroidered at corresponding acupuncture points at the bottom of the instep part (4) and the sole part (5); massage pads (10) are adhered to the inner surface of the lining corresponding to the acupuncture point marks (9); a sock leg (11) is connected to a sock welt of the sock body; the sock leg (11) comprises a fluffy sock leg section (12) and a tightened sock leg section (13); the fluffy sock leg section (12) and the tightened sock leg section (13) are distributed at an interval; the sweat-absorbent breathable layer (6) is formed by mixing and weaving nano silver fibers and combed cotton; both the shock-absorbing layer (7) and the protective layer (8) are made of wear-resistant aramids; an anti-skid lattice is woven on a surface of the shock-absorbing layer (7); and fibers on the instep part (4) are woven into anti-torsion vertical lines. The massage sock is wear-resistant and sweat-absorbent, and can realize sole massage.
Patent WO-2019015420-A1 (WO)
Title: Method and device for transmitting multimedia message, storage medium, and electronic apparatus
Inventor: REN CHAO
IPC: H04L12/58
Filed: 2018-06-14
Abstract: Provided is a method for transmitting a multimedia message, comprising: acquiring a multimedia message to be transmitted; when a rich communication connection is not in a connected state, storing the multimedia message in a cache zone; if transmission wait time is less than preset time and a rich communication connection notification has been received, transmitting the multimedia message by means of instant messaging; or if the transmission wait time exceeds the preset time and no rich communication connection notification has been received, transmitting the multimedia message by means of a multimedia messaging service.
Patent WO-2019214080-A1 (WO)
Title: Approval information processing method and apparatus, computer device, and storage medium
Inventor: HAN MEI
IPC: G06Q10/00
Filed: 2018-07-25
Abstract: An approval information processing method, comprising: obtaining an institution approval request sent by a first terminal logged in with an institution administrator account; extracting approval process information and approval content information within the institution approval request; according to the approval content information, generating an approval document; sending the approval document to a second terminal, the second terminal being logged in with an approver account determined according to the approval process information; upon receiving approval pass information returned by the second terminal according to the approval document, querying a department employee account corresponding to an approval institution document in the approval content information; sending an institution release notification generated according to the approval pass information to a third terminal logged in with the queried department employee account.
Patent WO-2019042088-A1 (WO)
Title: Method for preparing textured surface on surface of crystalline silicon
Inventor: QIN YUSEN
IPC: C30B33/10
Filed: 2018-08-03
Abstract: A method for preparing a textured surface on a surface of a crystalline silicon wafer, comprising generating a chemical conversion coating on a surface of a crystalline silicon wafer, and implementing chemical etching on a partial surface of the crystalline silicon wafer by virtue of the non-uniformity and discontinuity of the chemical conversion coating during growth thereof, thereby achieving the purpose of preparing a textured surface on the surface of the crystalline silicon wafer.
Patent WO-2020029102-A1 (WO)
Inventor: LUO JIAWEN
IPC: B64C27/00
Filed: 2018-08-08
Abstract: 本发明公开了一种单旋翼无人机的驱动系统，包括主轴和驱动电机，所述驱动电机设有主齿轮，所述主轴设有从动齿盘，所述主齿轮和所述从动齿盘啮合，所述驱动电机通过第一电机座和第二电机座安装于所述机身，所述第一电机座和所述第二电机座与所述主齿轮之间皆设有主齿轴承，所述主设有第一主轴座、第二主轴座和第三主轴座所述第二主轴座和第三主轴座为一体结构，所述第一主轴座、第二主轴座和第三主轴座与所述主轴之间皆设有主轴轴承，所述主齿轴承和主轴轴承皆为角接触轴承。本发明通过角接触轴承解决主轴的轴向位移问题，在保证了主轴轴向的稳定情况下，还能使主轴顺畅的旋转，以此保证无人机的稳定运行。