Abstract: The present disclosure provides a thermal-stress-pore pressure coupled electromagnetic loading triaxial Hopkinson bar system and test method, the system mainly consists of an electromagnetic pulse generation system, a servo-controlled axial pressure loading system, a servo-controlled confining pressure loading system, a thermal control system, a pore pressure loading system, a bar system, and a data monitoring and acquisition system. Based on the conventional Hopkinson bar, the present disclosure creatively introduces a real-time loading and control system for confining pressure, thermal, and pore pressure, aiming to solve the technical problem that the existing test apparatus cannot be used to study dynamic response of deep rock mass under the coupling effect of thermal-stress-pore pressure and dynamic disturbance during dynamic impact loading.

Abstract: The present invention relates to an organic compound, an organic electroluminescent material, and an organic electroluminescent element. The structural formula of the compound is shown in formula (I). When the organic compound of the present invention is used for preparing an organic electroluminescent element, the electron mobility, thermal stability, and luminescent characteristics are excellent; and the organic compound can be applied to an organic layer of the organic electroluminescent element. The organic compound of the present invention has a relatively good film-forming property; and when same is applied to an electron transport layer and an electron transport auxiliary layer, an organic electroluminescent element, which has a lower driving voltage, a higher light emission efficiency, and a longer service life than existing electron transport materials, can be manufactured, and thus, a full-color display panel with having improved performance and a prolonged service life can be manufactured.

Abstract: Disclosed are a rocker device and a handle controller. The rocker device includes a mounting seat assembly, an electric control board, an upper shell and a bottom shell. The mounting seat assembly is provided with a first groove and an arc-shaped groove for mounting the rocker arm assembly. The electric control board is disposed in the first groove, and the upper shell covers a top area of the mounting seat assembly. The upper shell fixes two ends of the rocker arm assembly in the arc-shaped groove and confines the electric control board to the first groove. A first connecting portion is also provided on an outer periphery of the upper shell. The mounting seat assembly is disposed in the bottom shell, and the bottom shell is clamped with the first connecting portion.

Abstract: A joystick device is provided. The joystick device includes a housing, a joystick assembly, a reset assembly, a translation assembly, and a circuit board. A magnetic component is located on the translation assembly, and a magnetic induction element is located on the circuit board. The joystick assembly pushes the translation assembly to translate, and the magnetic induction element generate an output that changes with the movement of the translation assembly. A handle using the joystick device also provided.

Abstract: A joystick sensor includes a housing, a reset assembly, a rocker assembly, a circuit assembly, the reset assembly, the rocker assembly and the circuit assembly are mounted on the housing; the rocker assembly includes two magnets, an upper rocker arm, a lower rocker arm, and a rocker body, one end of the upper rocker connected with one of the two magnets; one end of the rocker arm is connected with the other one of the two magnets, the other end of the lower rocker arm is secured a pressing block; the circuit assembly includes a flexible circuit board, two Hall IC elements, and a switch spring, the two Hall IC elements and the switch spring are arranged on the flexible circuit board, positions of the Hall IC elements respective correspond to positions of the magnets; a position of the switch spring corresponds to a position of the pressing block.

Abstract: Methods and systems are described that enable manufacturing of holograms with high spatial frequencies and allow composite master holograms to be formed in reflection configurations. An example system for replicating transmission-type holographic elements includes one or more prisms positioned to receive an illumination beam on a first face. A composite master holographic element is positioned in contact with a second face of the one or more prisms to receive the illumination beam after propagation through he one or more prisms. The composite master hologram includes a reference beam component and an object beam component. The replication hologram is positioned in contact with a third face of the one or more prisms to receive, upon illumination of the master HOE by the illumination beam, a holographic exposure comprising first order diffracted illumination from both the reference beam component and object beam component at an exposure region of the copy HOE.

Abstract: Methods, devices and systems for improved fabrication and measurement of holographic elements are described. One example method includes directing a reference and an object beam toward a holographic material for formation of a diffraction grating in the holographic material, and blocking one of the reference or the object beams to prevent the beam from reaching the holographic material for at least a portion of time during which the diffraction grating is being formed. During the blockage of the beam, a power level of a diffracted beam associated with the reference or the object beam that is not being blocked is measured. Based on the measured power level, it is then determined whether a particular diffraction grating efficiency is reached. The described techniques enable real-time measurement of diffraction grating efficiency as the grating is being formed and enable improved fabrication of holographic elements hat must meet precise diffraction grating efficiency requirements.

Abstract: An apparatus, system, and method for a waveguide system may be used to support eye tracking in a head mounted display (HMD). The waveguide system may be positioned in a user’s field of view and within a lens assembly of the HMD to capture light that is reflected from an eye. The waveguide system may include a waveguide, a first diffraction grating, and a second diffraction grating. The first diffraction grating may be configured to in-couple light of a first wavelength into the waveguide, and the second diffraction grating may be configured to in-couple light of a second wavelength. The first and second diffraction gratings operate together to detect light reflections from an eyebox region.

Abstract: An apparatus, system, and method for a waveguide system may be used to support eye tracking in a head mounted display (HMD). The waveguide system may be positioned in a user’s field of view and within a lens assembly of the HMD to capture light that is reflected from an eye. The waveguide system may have a number of multi-directional gratings configured to direct light to an out-coupling grating. The multi-directional gratings include first and second in-coupling diffraction gratings disposed in a waveguide. The first and second in-coupling diffraction gratings are oriented to direct incident light in multiple directions within the waveguide towards the out-coupling diffraction grating.

Abstract: An apparatus, system, and method for a waveguide system may be used to support eye tracking in a head mounted display. The waveguide system may be positioned in a user's field of view and within a lens assembly of an HMD to capture light that is reflected from an eye. The waveguide system may include a waveguide, a first diffraction grating, and a second diffraction grating. The first diffraction grating may be configured to in-couple light into the waveguide from an eyebox region. The first diffraction grating may be a rolled diffraction grating having slanted grating planes that receive light from a larger surface area and direct the light onto a smaller surface area. The second diffraction grating may receive the light from the first diffraction grating in the waveguide and may be configured to out-couple the light from the waveguide onto an image sensor.

Abstract: A synchronous joystick sensor is provided, the synchronous joystick sensor includes a joystick, a joystick arm assembly, a swing detection assembly, a reset assembly. The joystick arm assembly is sleeved on the joystick, the arm assembly is driven by the joystick to swing in a first direction and a second direction perpendicular to the first direction. The swing detection assembly is configured to swing detection assembly, and configured to measure the swing amount in the first direction and the second direction through a magnetic detecting element, and convert the swing amount into a first electronic signal and a second electronic signal; a reset assembly configured to make the joystick being in a vertical reset state when there is no external force.

Abstract: A synchronous joystick sensor is provided, the synchronous joystick sensor includes a joystick, a joystick arm assembly, a swing detection assembly, a reset assembly. The joystick arm assembly is sleeved on the joystick, the arm assembly is driven by the joystick to swing in a first direction and a second direction perpendicular to the first direction. The swing detection assembly is configured to swing detection assembly, and configured to measure the swing amount in the first direction and the second direction through a magnetic detecting element, and convert the swing amount into a first electronic signal and a second electronic signal; a reset assembly configured to make the joystick being in a vertical reset state when there is no external force.

Abstract: A joystick device is provided. The joystick device includes a housing, a joystick assembly, a reset assembly, a translation assembly, and a circuit board. A magnetic component is located on the translation assembly, and a magnetic induction element is located on the circuit board. The joystick assembly pushes the translation assembly to translate, and the magnetic induction element generate an output that changes with the movement of the translation assembly. A handle using the joystick device also provided.

Abstract: An electric machine including a housing assembly including a first end and a second end, a stator, a rotor, and a fan is provided. The housing assembly includes a terminal box positioned at the first end, an end plate coupled to the terminal box and including a plurality of inlet apertures, and a casing coupled to the end plate and extending toward the second end. The stator is fixedly secured to the housing assembly and positioned within the casing. The rotor is rotatably secured to the housing assembly and positioned within the casing such that the stator and the rotor are separated within the casing by an air gap. The fan is positioned inside the casing and is configured to draw air into the housing assembly through the plurality of inlet apertures.

Abstract: The present invention discloses a distributed system and a data operation method thereof. The system comprises a client, a master node, a plurality of storage nodes and a plurality of computing nodes. The client is configured to send a data operation request to the master node. The master node is configured to respond to the client's request, acquire a storage node list, and then send the storage node list to the client. The plurality of storage nodes are configured to store data requested by the client for operation. The plurality of computing nodes are configured to execute a computing task allocated by the master node based on the client's data operation request. For acquiring the storage node list, the master node employs a copy location selection policy to select a storage node corresponding to a data copy.

Abstract: A method and device for automatically processing static test data of a rail transit vehicle are provided. A target operation step is determined in accordance with a commissioning template. Information about a commissioning task step is sent to a terminal device, for prompting that the target operation step needs to be executed. After the information about a commissioning result corresponding to the target operation step is received, it is judged whether test data in the information is correct. If it is judged that the test data is correct, the information is sent to the terminal device, the judgement result is filled into the commissioning template, and a step of determining the target operation step is executed. If it is judged that the test data is incorrect, the information is sent to the terminal device, and the judgement result is filled into the commissioning template.

Abstract: A method and device for automatically processing static test data of a rail transit vehicle are provided. A target operation step is determined in accordance with a commissioning template. Information about a commissioning task step is sent to a terminal device, for prompting that the target operation step needs to be executed. After the information about a commissioning result corresponding to the target operation step is received, it is judged whether test data in the information is correct. If it is judged that the test data is correct, the information is sent to the terminal device, the judgement result is filled into the commissioning template, and a step of determining the target operation step is executed.

Abstract: A method and a system for interacting rail transit vehicle commissioning task information are provided. The system includes a server and a commissioning terminal, wherein the server generates a commissioning template and sends to the commissioning terminal the commissioning process promoting information. The commissioning terminal obtains the commission template, and may obtain commissioning result data corresponding to a current operation step promoted in a current commissioning process promoting information and send the commissioning result data to the server. The server judges the commissioning result data, generates and sends the judgment result to the commissioning terminal. The commissioning terminal fills the judgment result into the interacting region corresponding to the current operation step.

Abstract: The present invention discloses a distributed system and a data operation method thereof. The system comprises a client, a master node, a plurality of storage nodes and a plurality of computing nodes. The client is configured to send a data operation request to the master node. The master node is configured to respond to the client's request, acquire a storage node list, and then send the storage node list to the client. The plurality of storage nodes are configured to store data requested by the client for operation. The plurality of computing nodes are configured to execute a computing task allocated by the master node based on the client's data operation request. For acquiring the storage node list, the master node employs a copy location selection policy to select a storage node corresponding to a data copy.