baber/WOPTO huggingface dataset:
Patent WO-2020038193-A1 (WO)
Title: Color film substrate and manufacturing method therefor, and display device
Inventor: MA CHUNHONG
IPC: G02F1/1335
Filed: 2019-07-29
Abstract: Embodiments of the present invention provide a color film substrate and manufacturing method therefor, and a display device. The color film substrate comprises a base, and a color resist and a light shielding part located on the base. The color resist and the light shielding part are provided alternately along a first direction. The size of the light shielding part along the first direction depends on the sensitivity of human eyes to the color mixing of the color resists on either side of the light shielding part.
Patent WO-2020052404-A1 (WO)
Title: Drive circuit for flicker-free led lighting having high power factor
Inventor: HUANG SHENGMING
IPC: H05B44/00
Filed: 2019-08-15
Abstract: A drive circuit for flicker-free LED lighting having a high power factor, the circuit comprising a start-up circuit, a control chip, a transformer T1, a first current switch, and a second current switch. The transformer T1 comprises a main primary winding Np1, a primary winding Np2, a primary winding Na, and a secondary winding Ns. The main primary winding Np1 and the primary winding Np2 are in-phase, the primary winding Na and the secondary winding Ns are in-phase, and phases of the main primary winding Np1 and the secondary winding Ns are inverted. The start-up circuit and the transformer T1 are connected to an input terminal Vin. The start-up circuit, the first current switch, and the second current switch are connected to the control chip. The control chip controls, by means of controlling the first current switch and the second current switch to turn on or off, an output current of the secondary winding Ns of the transformer T1. The drive power supply circuit for LED lighting having a high power factor reduces ripples in an output current, thereby realizing advantages of a high power factor, being flicker-free, and having a low cost, etc., for LED lighting.
Patent WO-2020038328-A1 (WO)
Title: Single-floor vertical type hopper crushing device
Inventor: ZHU XINGLIANG
IPC: B02C23/00
Filed: 2019-08-19
Abstract: A single-floor vertical type hopper crushing device, comprising a multi-layer crusher placement holder which is arranged vertically. Material crushers are sequentially arranged on different layers of the crusher placement holder from top to bottom by the material crushing order, and comprise a first crusher (2) located on a first layer and a second crusher (3) located on a second layer. An outlet of the first crusher is connected to an inlet of the second crusher. A hopper comprises an oblique hopper and a vertical hopper. A front end of the inlet of the first crusher (2) located on the first layer is connected to a feeder (1). A rear end of the outlet of the second crusher (3) located on the second layer is connected to a vibrating screen (6) and a transmission belt (7). By vertically arranging all the material crushing and screening devices in a centralized manner, and designing a vertical abutting joint structure, the use of a transmission device is reduced.
Patent WO-2020073795-A1 (WO)
Inventor: SUN GAOMING
IPC: G06F9/345
Filed: 2019-09-23
Abstract: A device and method for transposing a matrix, and a display device. The device for transposing a matrix comprises: a first counting unit (100); an input module (300); multiple second counting units (200); and a first data selection unit (500). The first counting unit (100) is used to number data of a matrix and to output first signals. The input module (300) is connected to the first counting unit (100). The input module (300) inputs the data of the matrix after receiving the first signals. Each column of data in the matrix corresponds to a second counting unit (200). Each second counting unit (200) outputs a set of second signals, and each set of second signals comprises numbering information of a given column of data in the matrix corresponding to a given second counting unit (200). An input end of the first data selection unit (500) is connected to the input module (300), and a selection end of the first data selection unit (500) is connected to the multiple second counting units (200). The first data selection unit (500) receives the second signals according to a column order of the matrix, and sequentially outputs the data of respective columns in the matrix corresponding to the respective sets of second signals to serve as row data in a transposed matrix.
Patent WO-2020134338-A1 (WO)
Title: 毫米波太赫兹成像设备及物体识别分类方法
Inventor: ZHAO ZIRAN
IPC: G01V8/00
Filed: 2019-10-10
Abstract: 一种用于对被检对象（1）进行安全检查的毫米波太赫兹成像设备，包括聚焦透镜（3），检测器（4）和图形处理装置（6），其中聚焦透镜（3）设置在被检对象（1）和检测器（4）之间，且被构造为将被检对象（1）自发辐射或反射回来的毫米波太赫兹波聚焦在检测器（4）上；检测器（4）包括天线阵列（41）和探测器阵列（42），其中天线阵列（41）设置在探测器阵列（42）的朝向聚焦透镜（3）的一侧且设置为探测器阵列（41）的天线端口，探测器阵列（42）设置在聚焦透镜（3）的焦平面上，且被构造为将天线阵列（41）接收的毫米波太赫兹波转化为被检对象（1）的极化图像；图形处理装置（6）设置于探测器阵列（42）的远离天线阵列（41）的一侧，且被构造为处理极化图像以对被检对象（1）进行识别分类。
Patent WO-2021077254-A1 (WO)
Inventor: CAO YI
IPC: F16M11/04
Filed: 2019-10-21
Abstract: A camera stand (10) for mounting a camera (20). The camera stand (10) comprises a fixing member (11) and two supporting members (12). Each supporting member (12) comprises a supporting seat (121) and a supporting body (122) provided on the supporting seat (121). The fixing member (11) comprises a main body (111). Connecting bodies (112) are provided at two opposite ends of the main body (111). The end of each of the two connecting bodies (112) distant from the main body (111) is connected to the corresponding supporting body (122), so that the supporting members (12) support the fixing member (11). A mounting hole (113) is further formed in the main body (111), and the camera (20) is mounted on the main body (111) through the mounting hole (113). The camera stand (10) avoids the problem of a limited photographing effect due to a device for fixing a camera in an existing animal experiment device (100).
Patent WO-2020083370-A1 (WO)
Inventor: ZHU FANGYUAN
IPC: H04J3/06
Filed: 2019-10-25
Abstract: The present application provides a clock synchronization method and apparatus. The method comprises: a terminal receives information about N clock domains sent by an access network device, wherein the information about a clock domain comprises first time information and the clock domain number of the clock domain, the first time information comprises the time of the clock source of the clock domain when the access network device sends the information about the clock domain, the clock domain number is used for identifying the clock domain, and N is an integer greater than 1; the terminal determines M clock domains associated with terminal in the N clock domains, wherein M is a positive integer; the terminal separately performs clock synchronization with the clock sources of the M clock domains according to the information about the M clock domains. On the basis of this solution, when one terminal is associated with the clock sources of M clock domains, clock synchronization between the terminal and the M clock sources can be achieved.
Patent WO-2020103666-A1 (WO)
Inventor: DING JINGPING
IPC: F25B39/04
Filed: 2019-10-31
Abstract: Provided are a control system (110) having both an electronic control mode and a mechanical control mode, and a condensing unit. The control system (110) comprises: a data acquisition system; an electronic controller that performs operational analysis on the basis of acquired operating parameters and provides an instruction for controlling the operation of a condensing unit; and a plurality of electronic switching elements, wherein the control system (110) can control the operation of the condensing unit in an electronic control mode or a mechanical control mode; the control system (110) comprises a mode conversion device that is started only in the case that the electronic controller fails, so as to convert the control mode of the condensing unit from the electronic control mode to the mechanical control mode implemented only by means of some of the electronic switching elements. The control system (110) can be switched to the mechanical control mode in time when the electronic control mode fails, so as to ensure the normal operation of the unit, and therefore, the operation reliability of the condensing unit can be improved with low cost.
Patent WO-2020244135-A1 (WO)
Inventor: ZHU CHANGLIN
IPC: E02F9/22
Filed: 2019-11-01
Abstract: The present application provides an underwater construction equipment pressurization compensator, comprising a bladder, a housing, and a pressure member. The bladder is disposed in the housing; an opening is formed on the housing so that the cavity outside the bladder is communicated with the cavity outside the housing; the pressure member is disposed outside the bladder and abuts against the bladder to apply a pressure to the bladder to squeeze the bladder. In the underwater construction equipment pressurization compensator of the present application, an elastic member is provided to apply a pressure to the bladder, so that the liquid in the bladder generates an additional pressure, and thus, the difference between the pressure of the liquid inside the bladder and the pressure of the liquid outside the bladder can be increased, thereby overcoming the shortcoming of small difference between the pressures inside and outside the pressure compensator using only a bladder, and the bladder structure does not have the problem of failure caused by jamming and has high reliability.
Patent WO-2021003968-A1 (WO)
Title: 数据核对方法、装置、计算机设备和存储介质
Inventor: WANG MENGHAN
IPC: G06F21/60
Filed: 2019-11-28
Abstract: 一种数据核对方法，包括：当接收到区块链网络中其他区块链节点发送的新增业务数据时，对所述新增业务数据进行数据加密将加密后的新增业务数据上传至所述当前区块链节点的节点账本中；当到达预设核对时间时，将区块链网络中所有区块链节点的节点账本中，预设时间间隔内更新的业务数据相互之间进行非解密状态的数据匹配；当判定出所述更新的业务数据在所有节点账本中均相互匹配时，则对所述更新的业务数据核对通过。
Patent WO-2021102941-A1 (WO)
Inventor: WANG JUN
IPC: H04W36/00
Filed: 2019-11-29
Abstract: Les modes de réalisation de la présente invention concernent un procédé de communication de service MBMS et une station de base, concernant le domaine des communications, ledit procédé comprenant les étapes suivantes : une station de base source obtient des premières informations d'identification de groupe d'un service MBMS d'un équipement terminal dans une cellule voisine ; ladite station de base source envoie lesdites premières informations d'identification de groupe audit équipement terminal. L'équipement terminal dans la présente invention peut, sur la base des premières informations d'identification de groupe du service MBMS dans la cellule voisine obtenue à partir de la station de base source, après déplacement vers ou accédant à une cellule voisine, continuer à recevoir le contenu de service et des informations du service MBMS, ce qui permet d'améliorer efficacement la continuité et la fiabilité du service.
Patent WO-2020238116-A1 (WO)
Title: Product positioning method
Inventor: DU YIXIAN
IPC: G06K9/32
Filed: 2019-11-30
Abstract: Disclosed is a product positioning method, the method comprising: collecting a product picture; performing integral image calculation on the product picture; and acquiring, according to the calculated integral image, coordinates of each vertex in the product picture by means of differential calculation. According to the present application, an integral image algorithm is applied to product positioning, such that when the product picture quality is not high, for example, the picture is blurry, and it is thus not convenient to position a product by using a picture edge algorithm or a template matching algorithm, the product picture and a background region can be quickly divided by using the integral image algorithm, thereby positioning the product and not being limited by poor picture quality.
Patent WO-2020119785-A1 (WO)
Inventor: QIAN WENYUAN
IPC: A61K31/498
Filed: 2019-12-13
Abstract: 提供一种Syk抑制剂的盐及其结晶型，更具体而言提供5-氟-1-甲基-3-((5-(4-(氧杂环丁-3-基)哌嗪-1-基)吡啶-2-基)氨基)-6-(1H-吡唑-3-基)喹啉-2(1H)-酮盐酸盐及其结晶型，其制备方法、药物组合物及其用途。所述式I化合物的盐酸盐及其结晶型的成盐性好、稳定性高、吸湿性小，在物理性质、安全性及代谢稳定性方面具备优势，有较高的成药价值。
Patent WO-2020119788-A1 (WO)
Title: Systems and methods for lock control
Inventor: WANG FENGBANG
IPC: E05B49/00
Filed: 2019-12-13
Abstract: A system (100) and method for controlling a lock (170) of a subject are provided. The system (100) may obtain an instruction for locking the subject. The system (100) may obtain a status of the subject. The system (100) may control the lock (170) of the subject based on the instruction and the status of the subject. In response to a determination that the subject is in a motion status, the system (100) may repeatedly update the status of the subject until an updated status of the subject is a static status.
Patent WO-2020135181-A1 (WO)
Inventor: WANG JIAQING
IPC: H04W24/02
Filed: 2019-12-18
Abstract: 本公开的一些实施例提供一种DCI的传输方法、终端和网络侧设备，该方法包括：终端接收网络侧设备发送的第一DCI，所述第一DCI包括第一指示信息，所述第一指示信息用于指示所述终端不对后续N个检测机会进行PDCCH检测，或者用于指示在下一个检测机会进行PDCCH检测，或者用于指示至少在当前DRX on周期内停止PDCCH检测，所述N为大于或者等于1的整数；若所述第一DCI译码成功，则所述终端响应所述第一指示信息。
Patent WO-2021109280-A1 (WO)
Title: Écran d'affichage à cristaux liquides et dispositif d'affichage
Inventor: ZHAO RENTANG
IPC: G02F1/1337
Filed: 2019-12-23
Abstract: Écran d'affichage à cristaux liquides comprenant un substrat de film coloré (10), un substrat de réseau (20), et un matériau d'étanchéité (30) pour relier le substrat de film coloré (10) et le substrat de réseau (20), ainsi qu'un cristal liquide (40) disposé entre le substrat de film coloré (10) et le substrat de réseau (20), un film d'alignement (60) et une matrice noire (50) étant fournis sur le substrat de film coloré (10), une zone de barrière liquide (70) étant en outre fournie entre la matrice noire (50) à proximité de l'agent d'étanchéité (30) et le film d'alignement (60); et la zone de barrière au liquide (70) est composée de parties saillantes (80) disposées à intervalles.
Patent WO-2020135638-A1 (WO)
Title: 散热结构
Inventor: LIU XIN
IPC: H01L23/34
Filed: 2019-12-26
Abstract: 本申请提供了一种散热结构，该散热结构包括：冷板(10)，包括板体(12)和在所述板体(12)背面设置的翅片，所述板体(12)内设置有管道(112)，所述板体(12)的正面用于设置芯片(30)；水泵(20)，固定在所述冷板的正面上(10)，所述水泵(20)的进口(21)和出口(22)分别与所述管道(122)连通。
Patent WO-2021114439-A1 (WO)
Inventor: HU YIQIANG
IPC: G06Q10/10
Filed: 2020-12-08
Abstract: The present application provides a transaction platform of a whole-industry ecological chain for tour guide services. The transaction platform comprises an online product, i.e. a commercial website and an application which are in a plurality of languages, have a plurality of services and are used by a tour guide to take an order online; and an offline product, which includes, but is not limited to, a physical store of a directly operated chain store and a franchise store of a brand and a vending machine. A service is provided for a manual tour guide by means of a website and an application that are online and a physical store and a vending machine that are offline.
Patent WO-2020147606-A1 (WO)
Title: 无线漫游的方法及装置
Inventor: HUANG YUAN
IPC: H04W4/80
Filed: 2020-01-06
Abstract: 本申请实施例公开了一种无线漫游的方法以及装置，方法包括：确定移动终端运行的程序类型；若所述移动终端运行的程序类型包括目标程序类型，则对第一无线保真Wi-Fi网络的参数进行监测；其中，所述第一Wi-Fi为当前终端接入的Wi-Fi；根据监测到的参数判断所述第一Wi-Fi的网络质量是否满足预设的网络质量要求；若所述第一Wi-Fi网络不满足预设的网络质量要求，则将所述目标程序类型的应用数据进行网络漫游。通过本发明提供的实施例，能够在Wi-Fi网络质量不满足预设的网络质量要求时，实现目标程序类型的应用数据实时网络漫游，通过主动热点切换来保证网络质量，从而提高用户的体验。
Patent WO-2020147826-A1 (WO)
Title: 随机接入传输方法及终端
Inventor: CHEN XIAOHANG
IPC: H04W74/08
Filed: 2020-01-17
Abstract: 本公开公开了一种随机接入传输方法及终端，该方法包括：获取物理上行共享信道PUSCH的解调参考信号DMRS的序列跳转参数；根据序列跳转参数，发送随机接入消息，其中，随机接入消息对应于PRACH和PUSCH。
Patent WO-2020164533-A1 (WO)
Title: 无线通信的方法、用户设备、网络设备及通信装置
Inventor: XU HAIBO
IPC: H04L29/06
Filed: 2020-02-13
Abstract: 本申请提供了一种无线通信的方法，第一用户设备UE向第一网络设备发送第一消息，所述第一消息包括第一服务质量QoS信息；所述第一网络设备接收所述第一消息；所述第一网络设备根据所述第一QoS信息和第一UE的第一信息，确定所述第一QoS信息所映射的目标标识，所述第一信息包括侧行链路业务的QoS信息与目标标识的映射关系，所述映射关系至少包括所述第一QoS信息与第一侧行链路无线承载SL RB，或所述第一SL RB的逻辑信道，或第一SL RB和所述第一SL RB的逻辑信道的映射关系。在加强网络设备对PC5口通信的控制情况下，减少或避免侧行链路业务中数据包的丢失。
Patent WO-2020187038-A1 (WO)
Title: 一种fod用弯曲疲劳试验件及其设计方法
Inventor: ZHAO ZHENHUA
IPC: G01M13/00
Filed: 2020-03-05
Abstract: 本发明公开了一种FOD用弯曲疲劳试验件及其设计方法，该FOD用弯曲疲劳试验件包括夹持端及模拟叶片。其中，夹持端能满足在FOD模拟试验和弯曲疲劳试验时有效夹持，避免试验件因松动影响试验结果；模拟叶片能模拟真实叶片特征位置前缘的形状，并把叶片前缘适当弯曲，有效避免因弯曲中性层导致的弯曲应力小问题。
Patent WO-2021179329-A1 (WO)
Title: 移位寄存器、驱动方法、栅极驱动电路及显示装置
Inventor: SHANG GUANGLIANG
IPC: G09G3/36
Filed: 2020-03-13
Abstract: 一种移位寄存器、驱动方法、栅极驱动电路及显示装置，其中，移位寄存器包括：输入电路（10），第一晶体管（M1），级联输出电路（20），驱动输出电路（30）。第一晶体管（M1）为双栅型晶体管；其中，第一晶体管（M1）的第一栅极被配置为与第一参考信号端（VREF1）耦接，第一晶体管（M1）的第二栅极被配置为接收第一阈值调控信号（VS1），级联输出电路（20）被配置为根据第一时钟信号端（CK1）和级联输出电路（20）的控制端的信号，使级联信号输出端（GP）输出级联信号；驱动输出电路（30）被配置为根据级联信号输出端（GP）的级联信号，使驱动信号输出端（OP）输出驱动信号。
Patent WO-2021098111-A1 (WO)
Title: 编码图像塑型的方法、装置、服务器和存储介质
Inventor: CHENG YE
IPC: G06K19/06
Filed: 2020-03-27
Abstract: 本申请公开了一种编码图像塑型的方法、装置、服务器和存储介质。所述方法包括：获取预设分辨率的灰度图像，灰度图像包括位于多个像素坐标处的多个第一像素；根据预设分辨率生成第一码点图像，第一码点图像包括多个相互间隔的第一码点像素，多个第一码点像素位于多个第一码点坐标处；匹配像素坐标和第一码点坐标；根据第一码点像素的第一码点坐标以及对应位置的第一像素的灰度值生成对应的目标码点图像。
Patent WO-2021189463-A1 (WO)
Inventor: TSAI HSIUNG-YU
IPC: H04N5/225
Filed: 2020-03-27
Abstract: Provided is an optical imaging system. The optical imaging system (100) sequentially comprises, from an object side to an image side along an optical axis, a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a positive refractive power; a fourth lens group having a positive refractive power; and a diaphragm arranged on the object side of the third lens group. According to the optical imaging system (100), the lenses in the system are divided into groups such that the system can achieve both a wide viewing angle and a high resolution capability, and also has the characteristic of miniaturization. An imaging module comprising the optical imaging system, and an electronic device and a driving device comprising the imaging module are further provided.
Patent WO-2021068462-A1 (WO)
Inventor: ZHAO DEYI
IPC: H01L27/02
Filed: 2020-03-27
Abstract: 本发明提出了一种利用纵向三极管触发表面可控硅结构的TVS器件，包括一半导体主体，所述半导体主体包括表面结可控硅结构和纵向NPN结构，所述可控硅结构的阳极与半导体主体的对通隔离通过金属连接，当所述纵向NPN结构击穿时，所述表面结可控硅结构触发，本发明通过增加了触发结构来提供电压或者电流，以降低触发电压同时增大维持电压，使可控硅结构的TVS性能趋于理想。
Patent WO-2021207943-A1 (WO)
Title: Projection display method and system based on multiple photographic apparatuses, and terminal and storage medium
Inventor: WU YANG
IPC: H04N5/232
Filed: 2020-04-14
Abstract: A projection display method and system based on multiple photographic apparatuses, and a terminal and a storage medium. The method comprises: determining, according to coordinate information of a target point and information of multiple photographic apparatuses, the projection position of the target point on an image plane of each photographic apparatus (S101); and controlling, according to the projection position of the target point on the image plane of each photographic apparatus, a terminal to display the projection position of the target point on an image of each photographic apparatus, so that the target point is synchronously displayed on the basis of the multiple photographic apparatuses (S102).
Patent WO-2021212479-A1 (WO)
Inventor: LI YANG
IPC: H05K9/00
Filed: 2020-04-24
Abstract: A circuit board, comprising an electromagnetic shielding film, an insulating adhesive portion, a first signal line and a second signal line; the electromagnetic shielding film comprises a first surface and a second surface opposite to each other, the electromagnetic shielding film is divided into a body portion, a first bending portion, and a second bending portion, the first signal line and the second signal line are spaced apart on the first surface in a first direction, the first bending portion and the second bending portion are connected to two opposite sides of the body portion respectively in the first direction, the first bending portion is bent such that the second surface faces outwards and matches with the body portion to surround the first signal line, the second bending portion is bent such that the second surface faces outwards and matches with the body portion to surround the second signal line, the first bending portion and the second bending portion separate the first signal line and the second signal line from each other, and the insulating adhesive portion fills a gap between the first bending portion and the body portion and a gap between the second bending portion and the body portion. The present application further provides a method for manufacturing a circuit board.
Patent WO-2021120501-A1 (WO)
Title: 快换刀架的切割装置
Inventor: MIAO XIANG
IPC: E21C35/193
Filed: 2020-05-07
Abstract: 一种用于地面加工机的快换刀架切割装置，切割装置(1)包括刀架(2)和基体(3)，刀架(2)具有主体(210)，主体(210)上部的加工部侧设有刀具安装部(22)，主体(210)下部的固定部侧设有伸长柄部(202)，主体(210)的刀具安装部(22)和伸长柄部(202)之间设有若干个敞开的外部面。该切割装置(1)的刀架(2)和基体(3)有多个工作面配合工作，扩大了接触面积，将工作力由刀架(2)最大化的释放到基体(3)中，并且刀架(2)可以借助基体(3)容纳部自由旋转，使得刀架（2）的拆卸更加便捷。
Patent WO-2021227005-A1 (WO)
Title: Systems, methods, and apparatus for resource determination in wireless communication
Inventor: ZHANG YUSHU
IPC: H04W72/04
Filed: 2020-05-15
Abstract: A method for a user equipment (UE) may detect Downlink Control Information (DCI) format 2_0. The DCI format 2_0 may comprise an available resource block (RB) set indicator information element (IE) that indicates a state of Listen Before Talk (LBT) sub-bands, and a Channel Occupancy Time (COT) duration indicator IE. The available RB set indicator is set to an unknown state when there is insufficient time to fully prepare the DCI Format 2_0.
Patent WO-2020238795-A1 (WO)
Title: Rk polypeptide radiopharmaceutical targeting her2, and preparation method therefor
Inventor: WANG FAN
IPC: A61K51/06
Filed: 2020-05-22
Abstract: Disclosed are an rk polypeptide radiopharmaceutical targeting HER2, and a preparation method therefor. The rk polypeptide radiopharmaceutical comprises an rk polypeptide dimer and a radionuclide, wherein the radionuclide marks the rk polypeptide dimer by means of a chelating agent, the rk polypeptide dimer is a polypeptide dimer formed by connecting PKM and rk polypeptide monomers and then dimerizing two rk polypeptide monomers connected to the PKM; each rk polypeptide monomer is a D-type amino acid linear eight-membered polypeptide, and the sequence of the rk polypeptide monomer is as follows: Arg-Asn-Trp-Glu-Leu-Arg-Leu-Lys; and the PKM represents a pharmacokinetic modifying molecule. The radiopharmaceutical is used for imaging diagnosis of HER2-positive tumor patients, and medication guidance and real-time therapeutic effect monitoring of patients treated by monoclonal antibodies of the anti-cancer drug trastuzumab.
Patent WO-2020259638-A1 (WO)
Inventor: CHENG SHASHA
IPC: B63B35/44
Filed: 2020-06-24
Abstract: Disclosed in the present utility model are a main float and a water photovoltaic power station. The main float comprises a body; the body is provided with an accommodating cavity and a water inlet hole, the accommodating cavity has an upward opening, and the water inlet hole communicates the interior of the accommodating cavity with the exterior of the body. When the body floats on a water surface, water enters the accommodating cavity, so that the draft of water of the body increases; in addition, when the body is impacted by a water flow, as water is stored in the accommodating cavity, this part of water lowers the center of gravity of the main float, and achieves an anchoring effect, thereby improving the stability of the main float.