baber/WOPTO huggingface dataset:
Patent WO-2023272603-A1 (WO)
Title: Procédé d'étalonnage et dispositif électronique
Inventor: LI YUANQIANG
IPC: G01D18/00
Filed: 2021-06-30
Abstract: L'invention concerne un procédé d'étalonnage, consistant à : (S100) établir une connexion de communication entre une interface d'application d'une application d'étalonnage et une interface d'essai de fonctionnement d'un capteur devant être étalonné, et établir une connexion entre l'application d'étalonnage et un processeur et une connexion entre le capteur devant être étalonné et le processeur, respectivement ; (S200) l'application d'étalonnage déclenchant l'interface d'essai de fonctionnement afin qu'elle démarre un fil d'étalonnage pour obtenir des données d'étalonnage ; et (S300) le processeur étalonnant, selon les données d'étalonnage, le capteur devant être étalonné, et obtenant un résultat d'étalonnage correspondant à partir du capteur devant être étalonné. La procédure d'étalonnage de capteur est simplifiée et la précision d'étalonnage de capteur est améliorée. L'invention divulgue également un dispositif électronique.
Patent WO-2022213503-A1 (WO)
Title: Method for preparing hydrogenated compound film, and optical filter
Inventor: WANG YANZHI
IPC: G02B5/28
Filed: 2021-07-08
Abstract: The present application relates to the technical field of optical film optical filters, and provides a method for preparing a hydrogenated compound film, and an optical filter. The method comprises: introducing inert gas and hydrogen into a reaction chamber, bombarding at least two materials in the reaction chamber and the introduced hydrogen by using plasma formed by the inert gas such that the at least two materials are sputtered onto a substrate, and reacting with hydrogen ions generated by the hydrogen to form a hydrogenated compound film layer. The hydrogenated compound film layer at least comprises two materials, a sputtering technology is used for co-sputtering the at least two materials onto a same substrate to obtain required material performance, the hydrogenated compound film layer having a refractive index of larger than 3.5 and an extinction coefficient of smaller than 0.005 under a wavelength of 700 nm-1800 nm can be obtained, the hydrogenated compound film has high refractive index and low absorption for light, and in the case of large-angle incidence of light, the offset of a central wavelength along with an angle is small, so that the large-angle low-offset effect of the prepared optical filter is good.
Patent WO-2022151693-A1 (WO)
Inventor: LIU QIN
IPC: A47J37/06
Filed: 2021-07-22
Abstract: 一种微波蒸烤箱（100）及通过微波蒸烤箱（100）实施的烹饪方法（200），微波蒸烤箱（100）包括：箱体（110），箱体（110）内部的中空部分形成烹饪腔（101）；微波生成部（120），配置成可产生微波，并将微波传导至烹饪腔（101）内，对待加热食物进行加热；加热装置（130）和热风风扇（140），配置成可将加热装置（130）产生的热量形成热风并送入到烹饪腔（101）内；蒸汽发生器（150），配置成可产生蒸汽并将蒸汽吹到烹饪腔（101）内；循环风扇（160），配置成可增加烹饪腔（101）中的空气流动，使得热风和/或蒸汽在烹饪腔（101）中均匀分布。微波蒸烤箱（100）内能够实现多维度的风循环，更好的满足食品加工中对于热风及蒸汽均匀性的要求，提高了食物经过烹饪后的口感。
Patent WO-2023000245-A1 (WO)
Title: 一种pll电路及电子设备
Inventor: TIAN HUIQUN
IPC: H03L7/089
Filed: 2021-07-22
Abstract: 本发明提供了一种PLL电路及电子设备，PLL电路包括：电荷泵以及电流输入模块；所述电荷泵用于接收控制信号，所述控制信号用于控制所述电荷泵的充电电流以及放电电流；所述电流输入模块的一端与电压输入端连接，另一端与所述电荷泵的输出端连接；所述电流输入模块用于输出目标电流。也就是说，该PLL电路通过在电荷泵的输出端外接一个电流输入模块，以此改变PLL电路电荷泵的开/关时序，进而改变小数调制方式，从而达到优化小数杂散的目的。
Patent WO-2023004883-A1 (WO)
Inventor: WANG YITENG
IPC: H01L21/68
Filed: 2021-08-10
Abstract: Disclosed in the present application are a wafer alignment device, method and system. The alignment device comprises a measurement device and an adjustment device, wherein the measurement device is configured to measure an offset of a wafer deviating from a standard position; and the adjustment device is configured to adjust the position of the wafer according to the offset of the wafer measured by the measurement device, so that an error between the position of the wafer and the standard position meets requirements. According to the present application, the offset of the wafer can be automatically adjusted, thereby achieving the effect of improving the accuracy of grabbing the wafer by a subsequent mechanical arm.
Patent WO-2022198907-A1 (WO)
Title: Method and apparatus for controlling vehicle display screen, and device, medium and vehicle
Inventor: LI JIANPING
IPC: B60R1/08
Filed: 2021-08-19
Abstract: Disclosed is a method for controlling a vehicle display screen. The method comprises: detecting a steering control intention of a driver for a vehicle, so as to obtain a detection result; and according to the detection result, generating control information for controlling the brightness state of an A-pillar display screen of the vehicle, wherein the A-pillar display screen is mounted on an inner side of an A-pillar of the vehicle, and is used for displaying an image of the outside of the vehicle in a blind spot of the line of sight of the driver, which blind spot is formed by the blocking of the A-pillar. Further disclosed are an apparatus using the method, and a device, a medium and a vehicle. Therefore, the brightness state of an A-pillar display screen can be controlled on the basis of a steering control intention of a driver for a vehicle, such that on the premise of reducing the disturbance of the A-pillar display screen for the driver, an image of the outside of the vehicle in a blind spot of the line of sight of the driver, which blind spot is formed by the blocking of the A-pillar, is provided for the driver, thereby facilitating the improvement of driving safety, and also reducing the power consumption of the A-pillar display screen.
Patent WO-2022062797-A1 (WO)
Inventor: LIU JIAYIFAN
IPC: H04W48/20
Filed: 2021-08-23
Abstract: 本公开提供一种动态触发接入和移动性策略更改的方法和系统。动态触发接入和移动性策略更改的方法包括：AF在预定应用开始或终止的情况下，生成AM策略授权更新请求，其中AM策略授权更新请求中包括与应用相关联的标识信息；AF将AM策略授权更新请求通过NEF实体发送给PCF实体；PCF实体获取与标识信息相关联的策略参数；PCF实体将AM策略标识和策略参数通过AMF实体发送给接入网侧设备；接入网侧设备根据策略参数执行相应的无线资源调度。
Patent WO-2021259389-A1 (WO)
Inventor: CHEN MIAOYONG
IPC: B22C9/10
Filed: 2021-09-17
Abstract: A salt core clamping and placing device with a dust blowing-off structure. The device comprises a mechanical arm (1), a working frame (2), which is fixedly connected to the mechanical arm (1), and several air cylinder clamping jaws (3), which are distributed at the bottom end of the working frame (2) at equal intervals. Each of the air cylinder clamping jaws (3) comprises an air cylinder part (4) and a clamping jaw part (5) located at the bottom end of the air cylinder part (4), wherein a connecting rod (6) is fixed at the central position of the bottom end of the air cylinder part (4), a pressing disc (7), which is located within the clamping jaw part (5), is fixed at the bottom end of the connecting rod (6), and a gap for clamping a salt core is reserved between the pressing disc (7) and the bottom of the clamping jaw part (5). An air path pipe (8), which is connected to an external air pump by means of a conduit, is arranged inside the working frame (2), wherein several air blowing pipes (9), which extend out of the working frame (2), are connected on the air path pipe (8); and the several air blowing pipes (9) respectively correspond to the positions of the air cylinder clamping jaws (3), and air output ends of the air blowing pipes (9) face the clamping jaw parts (5).
Patent WO-2022241999-A1 (WO)
Inventor: WENG KUN
IPC: H01L23/528
Filed: 2021-09-24
Abstract: Provided in the present application is a semiconductor structure. The semiconductor structure comprises: a plurality of metal layers and a substrate, wherein a plurality of virtual metal blocks and at least one signal line are arranged on each metal layer; the virtual metal blocks on two adjacent metal layers are staggered in a direction perpendicular to the substrate; a first projection, on the substrate, of a first virtual metal block is of a polygonal shape, the first projection has a plurality of active edges that are opposite to a second projection, on the substrate, of a target signal line, and the distances from the active edges of the first projection to the straight line where the second projection is located are different; and the first virtual metal block is a virtual metal block, which is closest to the target signal line, in a target metal layer, and the target metal layer is the metal layer where the target signal line is located. By means of the solution, the parasitic capacitance between virtual metal blocks and the parasitic capacitance on a target signal line can be decreased, and uniform wiring can be realized on all metal layers.
Patent WO-2022063242-A1 (WO)
Inventor: YU CHENDONG
IPC: H04L12/26
Filed: 2021-09-24
Abstract: The present disclosure belongs to the technical field of communications, and discloses a two-layer service state detection method, a communication device, and a storage medium. The method comprises: by means of determining the number of sessions corresponding to a session number of a two-layer service, determining, according to the number of sessions, whether the state of the two-layer service is abnormal; and if it is determined that the state of the two-layer service is abnormal, sending abnormality warning information.
Patent WO-2022237051-A1 (WO)
Title: 一种适用于大型构件的智能托运机器及其托运方法
Inventor: HUANG YUJIAO
IPC: B65G15/14
Filed: 2021-09-28
Abstract: 一种适用于大型构件的智能托运机器及其托运方法，包括：设置在同一运输流水线的若干传送机构和装载组件（200），传送机构包括：通过若干驱动轴（110）连接的传送带（120），传送带（120）上设置偶数个配合槽（130），相邻的两个配合槽（130）设置为一组，配合槽（130）内以线性排列方式设置若干个磁块（131），配合槽（130）均能够配合连接装载组件（200），装载组件（200）包括：两个相邻设置的装载板（210），装载板（210）两侧面均以线性排列方式设置若干个电磁阀（220），装载板（210）内部设置安装腔体（240），安装腔体（240）内设置至少一个轨道杆（250），轨道杆（250）滑动连接支撑件（230），支撑件（230）上方设置机械手（270），机械手（270）通过铰接件（260）连接在支撑件（230）上端。利用支撑件（230）快速在轨道上做出横向滑动，保证装载组件不会因为装载板之间实际距离的改变，而受到拉扯力损坏。
Patent WO-2022105445-A1 (WO)
Title: Procédé de projection d'écran d'application basé sur un navigateur et appareil associé
Inventor: DENG CHAOMING
IPC: G06F16/958
Filed: 2021-09-28
Abstract: L'invention se rapporte à un procédé de projection d'écran d'application basé sur un navigateur et à un appareil associé, qui sont appliqués à un premier dispositif. Le procédé consiste : à recevoir une instruction d'opération générée en raison d'une opération effectuée par un utilisateur dans un navigateur et à obtenir un second contenu de lecture correspondant à une application cible dans un second dispositif (S401) ; et à lire un premier contenu de lecture dans le navigateur sur la base du second contenu de lecture, le premier contenu de lecture étant le même que le second contenu de lecture (S402). Selon le procédé, un utilisateur peut adapter l'application cible dans d'autres dispositifs au dispositif actuellement utilisé sans télécharger de nouveau une nouvelle application, ce qui permet d'améliorer l'expérience de l'utilisateur.
Patent WO-2022148073-A1 (WO)
Inventor: LI HONGYAN
IPC: B60L53/16
Filed: 2021-09-29
Abstract: 一种交流充电桩的有序充电控制系统及方法，该装置包括供电端和车载端；在充电连接确认线CC和接地线PE之间增加了开关S4和S5；该有序充电控制方法包括连接确认阶段、准备就绪阶段、等待启动阶段、启动充电阶段、充电阶段、充电结束阶段和充电结算阶段。该装置和方法在现有的充电流程和标准协议基础上进行改进和优化，在交流充电桩上实现一种有序充电控制流程的功能；对有序充电流程进行了规范。
Patent WO-2023070670-A1 (WO)
Title: Radial dynamic-pressure plane bearing and gear box
Inventor: HAN HUIMIN
IPC: F16C17/02
Filed: 2021-11-01
Abstract: A radial dynamic-pressure plane bearing (1) and a gear box. The radial dynamic-pressure plane bearing (1) is cylindrical as a whole, a hydraulic oil cavity (11) is provided on the outer peripheral surface of the radial dynamic-pressure plane bearing (1), the radial dynamic-pressure plane bearing (1) is provided with hydraulic oil holes (111) and oil return holes (131) radially passing through a wall portion of the radial dynamic-pressure plane bearing (1), identification portions (12) are provided at both ends of the radial dynamic-pressure plane bearing (1), and the positions of the identification portions (12) correspond to the position of the hydraulic oil cavity (11) in the circumferential direction (C) of the radial dynamic-pressure plane bearing (1), such that the position of the hydraulic oil cavity (11) in the circumferential direction (C) can be determined by means of the identification portions (12).
Patent WO-2022166297-A1 (WO)
Title: Heavy metal repair material having ion adsorption coupled to microbial mineralization, preparation method therefor and application thereof
Inventor: ZHAN QIWEI
IPC: C02F11/02
Filed: 2021-11-15
Abstract: The present invention relates to science and technology crossing in the field of environmental science, materials science, and microbiology. Disclosed are a heavy metal repair material having ion adsorption coupled to microbial mineralization, a preparation method therefor and an application thereof. The method comprises the steps of: uniformly mixing the sludge, the clay, the fly ash, a binder, a pore-forming agent, and triiron tetraoxide according to a certain proportion, and then grinding the mixture into powder, adding water and stirring to synthesize the slurry, preparing same into spherical particles having a particle size of 1-10 mm by means of a granulator, placing the spherical particles in a drying oven for drying, and then placing the dried spherical particles in a muffle furnace for preheating and calcining to prepare a porous carrier; and uniformly mixing the microbial powder with the porous carrier, and fully stirring the mixture under a negative pressure condition to obtain the heavy metal repair material of a carrier-immobilized microorganism. According to the present invention, the porous carrier-immobilized microorganism is prepared from the waste river bottom sludge; the heavy metal repair material has the dual functions of adsorption and mineralization, has fast heavy metal pollution repair speed and good heavy metal pollution repair effect, and is high in long-term stability; the cost of environmental governance is greatly reduced by taking wastes as raw materials.
Patent WO-2023087162-A1 (WO)
Inventor: WANG YALI
IPC: H01Q1/36
Filed: 2021-11-17
Abstract: L'invention concerne une antenne. L'antenne comprend une plaque de masse et une fente s'étendant à travers la plaque de masse ; une première couche diélectrique sur la plaque de masse et la fente ; une ligne d'alimentation en micro-ruban et une première pièce rayonnante sur un côté de la première couche diélectrique à l'opposé de la plaque de masse, la première pièce rayonnante étant couplée à la ligne d'alimentation en micro-ruban et conçue pour recevoir un signal provenant de la ligne d'alimentation en micro-ruban ; une seconde couche diélectrique sur un côté de la plaque de masse et la fente à l'opposé de la première couche diélectrique, de la première pièce rayonnante et de la ligne d'alimentation en micro-ruban ; et une seconde pièce rayonnante sur un côté de la seconde couche diélectrique à l'opposé de la plaque de masse, la seconde pièce rayonnante étant conçue pour recevoir un signal par couplage d'ouverture à travers la fente.
Patent WO-2023077596-A1 (WO)
Inventor: WANG ZHAOYANG
IPC: G06F21/60
Filed: 2021-12-03
Abstract: 一种双向隐匿数据查询方法及装置，包括：查询方基于待查询信息的第一唯一标识确定查询请求，并发送至数据方；查询请求包括第一辅助信息；第一辅助信息是根据第一唯一标识确定的；接收数据方发送的反馈结果；反馈结果包括数据方中的各密文和各密文对应的解密索引；各密文是数据方根据各明文对应的加密密钥对各明文进行加密得到的；各明文对应的加密密钥是根据各明文的第二辅助信息确定的；第二辅助信息是数据方根据第一辅助信息和第二唯一标识确定的；根据解密索引确定解密密钥，并根据解密密钥对密文进行解密；将解密成功的明文确定为查询结果。该方法和装置实现了查询方和数据方之间的数据完全隐匿，提高查询过程中的安全性和隐私性。
Patent WO-2022089666-A1 (WO)
Inventor: LIN GUANGRONG
IPC: A24F40/485
Filed: 2021-12-08
Abstract: An atomization core with an atomization channel (10), which is arranged in an atomization base of an electronic atomization device and comprises an atomization core body (1) used for conducting atomization liquid and a heating body (2) used for heating the atomization liquid. The atomization core body (1) comprises a liquid suction surface (11), an atomization surface (12) and an atomization channel (10). During heating atomatization, atomization is uniform, atomization performance is good, no burnt taste is easily caused by burning, and the structure of an atomization channel (10) structure being arranged in the atomization core body (1) is used, causing the atomized vapor mist or aerosol to be drawn out more quickly. An increase in the area of the atomization core causes atomization efficiency to be improved, and smoke volume to be large. A liquid guiding groove (13) is recessed downward in the liquid suction surface (11) of the atomization core body (1), so that when the atomization liquid in the atomization core body (1) is consumed, atomization liquid stored in the liquid guiding groove (13) can be quickly refilled into the atomization core body (1), and the atomization efficiency is increased so that the atomization is uniform and the atomization performance is improved.
Patent WO-2022135416-A1 (WO)
Title: Channel access method, user equipment, and base station
Inventor: CHIEN CHUN-CHE
IPC: H04W72/12
Filed: 2021-12-21
Abstract: A user equipment (UE) executes a semi-static channel access method during a random access procedure in an unlicensed band. A base station transmits configuration information and downlink (DL) information to the UE in a fixed frame period (FFP) according to a set of FFP parameters associated with the base station. The UE determines whether to initiate a channel occupancy time (COT) in an FFP according to a set of FFP parameters associated with the UE based on one or more of: at least one condition in the configuration information, at least one condition in scheduling information, at least one condition in DL information, and a detection result of detecting transmission of the DL information. The base station determines whether to use the UE-initiated COT shared from the UE.
Patent WO-2023070916-A1 (WO)
Inventor: ZHAO YUGUI
IPC: G10K11/178
Filed: 2021-12-23
Abstract: Sont divulgués dans la présente invention un procédé destiné à éliminer un effet d'occlusion d'un écouteur, ainsi qu'un écouteur. L'écouteur est pourvu d'un vibreur qui est étroitement fixé à une paroi de conduit auditif externe. Le procédé d'élimination d'un effet d'occlusion d'un écouteur comprend les étapes suivantes consistant à : mesurer une fréquence de vibration et une amplitude de vibration d'une paroi de conduit auditif externe et générer un signal de vibration de paroi de conduit auditif externe correspondant ; effectuer un traitement de filtrage passe-bas sur le signal de vibration de paroi de conduit auditif externe ; et effectuer un traitement d'inversion de phase sur le signal de vibration de paroi de conduit auditif externe qui a été soumis au traitement de filtrage passe-bas, de manière à obtenir un signal d'élimination d'effet d'occlusion et commander à un vibreur de vibrer en fonction de l'amplitude de vibration et de la fréquence de vibration qui correspondent au signal d'élimination d'effet d'occlusion, de façon à décaler la vibration de la paroi de conduit auditif externe. Au moyen de la présente invention, un effet d'occlusion d'un écouteur est éliminé, ce qui permet d'améliorer l'expérience d'utilisation d'un utilisateur.
Patent WO-2023115479-A1 (WO)
Title: Module de désinfection par effet corona ultra-mince
Inventor: WANG WEI
IPC: F24F8/80
Filed: 2021-12-23
Abstract: Module de désinfection par effet corona ultra-mince comprenant : un cadre d'enceinte isolant (7), une plaque perforée d'électrode négative (4) et un support d'électrode positive (6). La plaque perforée d'électrode négative (4) est disposée au fond du cadre d'enceinte isolant (7) ; une pluralité de trous de montage destinés à monter des tubes ronds métalliques (3) est formée dans la plaque perforée d'électrode négative (4) ; des entrées d'air inférieures (9) des tubes ronds métalliques (3) sont fixées dans les trous de montage de la plaque perforée d'électrode négative (4), et des ouvertures supérieures des tubes ronds métalliques (3) sont des sorties d'air (10) ; le support d'électrode positive (6) est en forme de grille ; le support d'électrode positive (6) est disposé au sommet du cadre d'enceinte isolant (7) et est espacé des sorties d'air (10) des tubes ronds métalliques (3) ; des aiguilles d'électrode (5) sont suspendues juste au-dessus des centres axiaux des tubes ronds métalliques (3) ; des parties d'extrémité d'aiguilles d'électrode (5) sont montées au niveau de joints du support d'électrode positive (6) ; les pointes des aiguilles d'électrode (5) sont espacées de 5-10 mm des entrées d'air des tubes ronds métalliques (3) ; une boîte de connexion de puissance externe (1) et un bloc à haute tension (2) sont en outre disposés dans le cadre d'enceinte isolant (7) ; l'électrode positive du bloc à haute tension (2) est électriquement connectée au support d'électrode positive (6) ; et l'électrode négative du bloc à haute tension (2) est électriquement connectée à la plaque perforée d'électrode négative (4). La technologie de catalyse électrostatique est appliquée à la désinfection de l'air de sorte qu'un champ corona est généré au moyen d'électricité statique à haute tension pour obtenir une désinfection de l'air d'un environnement avec des personnes.
Patent WO-2023115491-A1 (WO)
Inventor: MA TENG
IPC: H04W72/00
Filed: 2021-12-23
Abstract: 本申请涉及一种通信方法、终端设备、网络设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序；其中方法包括：在N个公共频域资源(CFR)上至少之一接收多播广播业务(MBS)；其中，所述N个CFR的频域范围位于目标带宽部分(BWP)内；所述N个CFR隶属于所述目标BWP；N为大于等于2的整数。
Patent WO-2023115494-A1 (WO)
Inventor: PENG FANGGUI
IPC: H01M50/258
Filed: 2021-12-23
Abstract: 本申请公开一种电池组、制造方法和具有电池组的用电设备，电池组包括壳体组件、电芯组件、第一电路板、第一连接件和第一绝缘件。电芯组件设于壳体组件内，电芯组件包括沿第一方向堆叠的第一列电芯和沿第一方向堆叠的第二列电芯，第一列电芯和第二列电芯沿第二方向间隔设置，第一列电芯和第二列电芯之间具有设有第一通道，第二方向垂直于第一方向。第一电路板连接电芯组件，第一通道延伸至第一电路板。第一连接件设于壳体组件内。第一绝缘件用于将电芯组件、第一电路板和第一连接件粘接连接。通过在第一列电芯和第二列电芯之间设有第一通道，第一通道延伸至第一电路板，使第一绝缘件将电芯组件、第一电路板和第一连接件粘接连接，更好固定电芯。
Patent WO-2022143556-A1 (WO)
Title: 光电器件
Inventor: YANG YIXING
IPC: H01L51/50
Filed: 2021-12-27
Abstract: 本申请公开一种光电器件，包括依次叠层设置的阳极、空穴传输层、量子点发光层、电子传输层和阴极，量子点发光层中包括核壳结构的量子点材料，量子点材料的外壳层材料与空穴传输材料的价带顶能级差大于等于0.5eV；电子传输层中包含有氧化锌纳米材料，氧化锌纳米材料的表面结合有链长为3～8个碳原子的胺基/羧基配体。本申请提供的光电器件，构建≥0.5eV的空穴注入势垒降低空穴注入效率，同时电子传输层采用表面结合有链长为3～8个碳原子的胺基/羧基配体的氧化锌材料，提高电子迁移注入效率，使发光器件中空穴与电子的注入速率平衡，提高电子与空穴复合效率，避免因载流子注入不平衡导致的电荷积累。
Patent WO-2022222543-A1 (WO)
Inventor: ZHANG JIANYING
IPC: G02F1/136
Filed: 2021-12-31
Abstract: A display panel (10) and a display apparatus (1). Sealant (300) is arranged between a first substrate (100) and a second substrate (200), and the sealant (300) is arranged in a non-display area (12); a first metal wiring set (111) is conductively connected to a second metal wiring set (121) in one-to-one correspondence by means of a set of bridging structures (130); and in the set of bridging structures (130), the bridging structure (130) closest to an edge of an outer side (301) of the sealant is the outermost bridging structure (131), and the distance between the outermost bridging structure (131) and the edge of the outer side (301) of the sealant is at least 50 μm.
Patent WO-2023273316-A1 (WO)
Inventor: LIU JINHUA
IPC: H04R9/04
Filed: 2022-01-18
Abstract: An inner core, a loudspeaker module and an electronic device, which relate to the technical field of electronic devices and can simultaneously take into account both device thinning and audio performance. The inner core comprises a diaphragm group, a first voice coil group, a second voice coil group, and a magnetic circuit system. The first voice coil group and the second voice coil group are fixed on the diaphragm group. The magnetic circuit system comprises a magnet assembly. The magnet assembly comprises a first center magnet, a second center magnet, and an edge magnet. The magnetization direction of the second center magnet is the same as that of the first center magnet, and the magnetization direction of the side magnet is opposite to that of the first center magnet. An inner magnetic conductive part is arranged in a gap between the first center magnet and the second center magnet. The first voice coil group and the second voice coil group cooperate with the magnetic circuit system to synchronously drive the diaphragm group to vibrate. The provided inner core is used for converting an audio electrical signal into sound.