Abstract: A positioning structure includes a first bush, a positioning washer, a bolt, and a button. The first bush has a first and a second opening. The positioning washer is fixed in the first bush, and includes a positioning hole aligned to the first opening and multiple positioning elastic pieces circumferentially arranged in the positioning hole. The bolt is adapted to be inserted into the first bush from the first opening and passes through the positioning hole. At least one of the positioning elastic pieces is engaged with a thread of the bolt. The button is inserted into the first bush from the second opening and contacts the positioning elastic pieces. The button is adapted to slide toward the first opening to push the positioning elastic pieces to deform, so that the positioning elastic pieces are separated from the thread, and the bolt is loosened from the positioning washer.

Abstract: A buffer assembly includes a screw rod, a base, a rotating element and a clamping ring. The rotating element is rotatably disposed on the base along a rotation axis. The rotating element includes a through hole. The clamping ring is detachably connected to the rotating element along a connection axis, so that the clamping ring is adapted to switch to a connected state or an open state. The clamping ring includes a position-limiting space, and the rotation axis is perpendicular to the connection axis. When the clamping ring is in the connected state, the position-limiting space and the through hole are located on the rotation axis, and the screw rod pushes the clamping ring to rotate so that the screw rod passes through the position-limiting space and the through hole. When the clamping ring is in the open state, the position-limiting space is misaligned with the rotation axis.

Abstract: The present disclosure provides an event log analysis system and an event log analysis method. The event log analysis method comprises: receiving multiple operating system events; screening out multiple identified events from the multiple operating system events based on multiple error information stored in a first database; determining whether the multiple identified events include at least one of a first hardware error event corresponding to a first hardware error type and a second hardware error event corresponding to a second hardware error type; in response to the first hardware error event, decoding the first hardware error event according to decoding information to obtain first hardware error information of the first hardware error event; in response to the second hardware error event, providing a download path for the second hardware error event; and generating an analysis report, wherein the analysis report includes the first hardware error information and the download path.

Abstract: A controller area network bus (CANBUS) communication system and a retry control method, the method includes: setting a preset time and a retransmission strategy through a first device, the retransmission strategy including multiple transmission times and multiple timeout intervals corresponding to the transmission times, and the timeout intervals are different from each other; sending a transmission request to a second device through the first device; determining whether a reply corresponding to the transmission request is received within a current timeout interval corresponding to a current transmission time based on the retransmission strategy through first device; in response to not receiving the reply within the current timeout interval, determining through first device whether the current transmission time is less than the preset time; and in response to the current transmission time being less than the preset time, retransmitting the transmission request to second device through first device.

Abstract: An antenna structure includes a substrate, a grounding surface and an antenna module. The substrate includes a first surface and a second surface. The antenna module is disposed on the second surface and includes a feeding point, a micro strip, n radiators and n coupling elements. The micro strip extends along a first axial direction and includes a first end, a second end, a first segment and a second segment. A width of the first segment is smaller than a width of the second segment. The n radiators are staggeredly connected to two sides of the micro strip along the first axial direction. The widths of the n radiators from the first end to the second end along the first axial direction are increased first and then decreased. The n coupling elements are separated from the micro strip and the n radiators.

Abstract: The present disclosure provides a picking device which is suitable for absorbing at least one material. The picking device includes a vacuum source and a picking mechanism. The vacuum source is configured to pump air so as to provide negative pressure. The picking mechanism is connected with the vacuum source and includes a main body and a plurality of picking assemblies which are movably arranged on the main body. The main body is provided with a plurality of air channels for connecting the vacuum source and the picking assemblies respectively. Each picking assembly includes a picking piece, a moving piece and a blocking piece; the picking pieces and the moving pieces penetrate through the main body at intervals and pass through the corresponding air channels; the moving pieces are provided with air vents for moving along with the blocking pieces so as to communicate with the air channels.

Abstract: An antenna module includes a substrate, two antenna units, at least one first microstrip and at least one second microstrip. The substrate includes a first surface and a second surface opposite to each other. The two antenna units are arranged at an interval, have the same polarization, and resonate at a frequency band. Each antenna unit includes a first radiator and a second radiator. The first radiator is disposed on the first surface, and the second radiator is disposed on the second surface. The at least one first microstrip is connected between the two first radiators. The at least one second microstrip is connected between the two second radiators, a length of each of the at least one first microstrip and the at least one second microstrip is 1/2 times a wavelength of the frequency band.

Abstract: An external heat dissipation module is connected to a server and includes a chassis, a liquid inlet connector, a liquid outlet connector, a liquid cooling radiator, and first and second pipelines. The liquid inlet connector and the liquid outlet connector are exposed from the chassis and are arranged at a same side of the chassis. The liquid cooling radiator and the first and second pipelines are located inside the chassis. The first pipeline is connected to the liquid inlet connector and the liquid cooling radiator. The second pipeline is connected to the liquid outlet connector and the liquid cooling radiator. Liquid in the server flows from the liquid inlet connector to the liquid cooling radiator through the first pipeline, and after being cooled by the liquid cooling radiator, flowing back to the server from the liquid cooling radiator to the liquid outlet connector through the second pipeline.

Abstract: The present invention discloses a rotating shaft structure for virtual reality (VR) or augmented reality (AR) glasses, and glasses. The rotating shaft structure includes a first housing, a second housing, an annular frame, an elastic body, and a rotating shaft. The first housing has a guide groove, and the guide groove includes two retaining walls and a recess located between the retaining walls. The second housing is relatively rotatably fitted with the first housing, and at least part of the second housing is located within the first housing. The annular frame is rotatably arranged in the first housing, is engaged with the second housing, and has a positioning post extending toward the guide groove. Two ends of the elastic body are respectively connected to the first housing and the annular frame. The rotating shaft extends through the first housing, the elastic body, and the annular frame.

Abstract: A multi-node server includes a server chassis, a main circuit board, a power delivery circuit board, and a signal transfer module. The main circuit board has a first node area and a second node area. The power delivery circuit board is disposed vertically on the main circuit board. A first side of the power delivery circuit board has a first power input connector and a second power input connector. A second side of the power delivery circuit board has a first power output connector facing the first node area and a second power output connector facing the second node area. The signal transfer module has a signal transfer circuit board, a first signal connector, and a second signal connector. The signal transfer circuit board is parallel to the main circuit board. The signal transfer circuit board electrically connects the first signal connector to the second signal connector.

Abstract: An antenna module is adapted to be disposed in a fuselage of an unmanned aerial vehicle. The fuselage includes front and rear sides opposite to each other and left and right sides opposite to each other. The antenna module includes a first antenna, a second antenna, a third antenna, and a fourth antenna. The first antenna is horizontally disposed on the front side of the fuselage and is a horizontally polarized antenna. The second antenna is vertically disposed on the right side of the fuselage and is a vertically polarized antenna. The third antenna is horizontally disposed on the rear side of the fuselage and is a horizontally polarized antenna. The fourth antenna is vertically disposed on the left side of the fuselage and is a vertically polarized antenna. Each of the first antenna, the second antenna, the third antenna, and the fourth antenna operate in a frequency band.

Abstract: A locking structure and a buckling washer are provided. The locking structure is provided for locking an object having a thru-hole. The locking structure includes a stud sleeve, a buckling washer, and a screw. The buckling washer is disposed on the stud sleeve, and the buckling washer includes a carrying portion and a plurality of hook portions. The carrying portion has a penetrating hole, and the hook portions extend from the carrying portion and are arranged outside of the penetrating hole. The carrying portion of the buckling washer is configured to carry the object, and the hook portions are configured to retain the object. The screw is configured to be screwed in the stud sleeve by passing through the thru-hole of the object and the penetrating hole of the buckling washer, such that the object is locked by the hook portions.

Abstract: The present invention discloses a cooling device including an accommodating tank, a turbulence plate, an adjustment structure and a control mechanism. The accommodating tank is adapted to accommodate a coolant. The turbulence plate divides the accommodating tank into a liquid inlet space and a cooling space. The turbulence plate includes a groove that divides the turbulence plate into a first plate portion and a second plate portion. The adjustment structure includes an adjustment plate corresponding to the groove. The control mechanism controls the adjustment plate to move between a first position and a second position, where when the adjustment plate moves from the first position to the second position, the adjustment plate passes through the groove and enters the liquid inlet space, to divide the liquid inlet space into a first chamber corresponding to the first plate portion and a second chamber corresponding to the second plate portion.

Abstract: A hand-eye calibration method and a hand-eye calibration device for a robot arm are provided. The method includes following steps. A first mapping relationship between a base of the robot arm and a terminal of the robot arm and a second mapping relationship between a camera and a target object are obtained. Based on a scale, a third mapping relationship between the terminal of the robot arm and a tool set mounted on the terminal and a fourth mapping relationship between the camera and the base in each dimension are updated to minimize an error between a position of the target object in an image captured by the camera and a position of the tool set. In response to the error being convergent and the scale being less than or equal to a scale threshold, the third mapping relationship and the fourth mapping relationship calibrated by the scale are output.

Abstract: A radio frequency beauty instrument is suitable for using on skin of a user. The radio frequency beauty instrument includes a housing, a main circuit board, a gear set, a drive unit, and a radio frequency module. The main circuit board is disposed in the housing. The gear set is disposed in the housing. The drive unit is disposed in the housing and electrically connected to the main circuit board. The drive unit is configured to drive the gear set. The radio frequency module includes a radio frequency circuit disposed on the main circuit board and multiple electrode units exposed outside the housing and electrically connected to the radio frequency circuit. The electrode units are connected to the gear set to be driven by the gear set to rotate. The radio frequency module provides a radio frequency current to the skin through the radio frequency circuit and the electrode units.

Abstract: A wire management structure and an electronic device. The wire management structure is suitable to fix a plurality of wires. The wire management structure includes a main body and a plurality of guide members. The main body includes a first side wall, a second side wall and a third side wall, and the second side wall is connected to the first side wall and the third side wall. The guide members are correspondingly disposed at the first side wall, the second side wall and the third side wall of the main body. A plurality of wire management slots are formed between the guide members and the first side wall, the second side wall and the third side wall, and the wires are suitable to pass through the wire management slots.

Abstract: An antenna assembly includes a patch antenna, a metal layer, and a feed-in signal layer. The metal layer is disposed on a side of the patch antenna and includes a first slot and a second slot. The feed-in signal layer is disposed on a side of the metal layer opposite the second antenna and includes a transmitting port, a receiving port, a hybrid coupler, and two microstrips. The transmitting port and the receiving port are connected to the hybrid coupler, and the two microstrips are extended in the direction away from the hybrid coupler. Projections of two ends of the two microstrips onto the metal layer are overlapped with the first slot and the second slot. An antenna array is also mentioned.

Abstract: An eyeglasses device includes a frame, a first temple, a circuit board, and a flexible circuit board. The frame includes first and second metal parts and an insulating component connecting the first and second metal parts. Second metal part is insulated from first metal part by insulating component. At least part of appearance of the frame is formed by the first metal part and the second metal part together. The first temple is pivotally connected to the frame. The circuit board is disposed in the first temple. The flexible circuit board is disposed on the frame and the first temple and is electrically connected to the second metal part and the circuit board. The flexible circuit board includes an antenna matching circuit. The second metal part serves as an antenna, and the antenna with the antenna matching circuit is excited at a first frequency band and a second frequency band.

Abstract: An electronic device, including a first body including first and second metallic enclosures, a metal assembly and an antenna. The second metallic enclosure is arranged at the first metallic enclosure. An internal space is formed between the first and second metallic enclosures. The metal assembly is disposed in the internal space. The metal assembly is connected to the first and second metallic enclosures, and forms a metal cavity together with the first and second metallic enclosures. The metal cavity has an opening opposite to the metal assembly. The antenna is disposed in the metal cavity and close to the opening, and includes a grounded radiator, a radiator assembly and a low frequency feed arm. The grounded radiator is conducted to the first metallic enclosure. A ground end of the radiator assembly is connected to the ground radiator. The low frequency feed arm is connected to the radiator assembly.

Abstract: A pixel shifting method and a control method of a display screen are provided. The pixel shifting method is adapted for the display screen, and the display screen includes at least one processor to perform the following steps. When the display screen displays a picture, pixel shifting is performed on a central point of the picture according to a shifting path. A plurality of pixels on the shifting path is allowed to be sequentially displayed on the display screen according to a plurality of different color attributes. The color attribute of each of the plurality of pixels is changed after a cycle of the pixel shifting ends.