Abstract: An anti-cavitation damping composite metal structure for a flow passage component and a preparation method thereof are provided. The preparation method includes: cladding a gradient functional material layer by layer on a substrate of a flow passage component; forming periodic structures on a surface of each layer of the gradient functional material through etching by an ultrafast laser to absorb a part of an impact load energy caused by cavitation of the flow passage component, where the layers of the gradient functional material form a gradient coating with a toughness increasing layer by layer and a hardness decreasing layer by layer from bottom to top; and forming nano twins on a surface layer by a laser shock peening technique, and implanting a residual compressive stress to further improve anti-cavitation resistance of a surface.

Abstract: Methods, systems, and computer-readable storage media for retrieving, by a smart setup system, a component configuration metadata file corresponding to an application, the component configuration metadata file including component metadata representing components that the application uses during runtime, parsing, by a parser of the smart setup system, the component configuration metadata file to provide a set of data objects, each corresponding to a respective component in the set of components, providing, by an emitter of the smart setup system, a set of checking scripts and a set of installation scripts by, for each component in the set of components, providing a checking script and an installation script using a respective data object, and executing, by the smart setup system, each checking script in the set of checking scripts, and in response, receiving a set of check results, each check results indicating whether pre-requisites of a respective component are met.

Abstract: The various implementations described herein include methods, devices and systems for power modulation and optical network coupling. A device includes a plurality of optical input ports and a plurality of optical output ports. The device further includes an array of power modulation components, each power modulation component coupled between a respective input port of the plurality of input ports and a corresponding output port of the plurality of output ports. The device also includes control circuitry coupled to the array of power modulation components, the control circuitry configured to: obtain power level information for the plurality of input ports; and adjust power modulation for one or more of the array of power modulation components based on the power level information such that output power levels are substantially similar.

Abstract: A temperature fuse assembly for a high-power DC circuit is provided. The temperature fuse assembly includes a case extending from a first case end to a second case end and an isolated lead projecting from the second case end. A bushing electrically isolates the isolated lead from the case. A high-gauge wire is electrically connected to the case at a first wire end and electrically connected to the isolated lead at a second wire end. A portion of the high-gauge wire is helically wound about an exterior of the bushing. When a temperature of the temperature fuse assembly exceeds a threshold temperature, the temperature fuse assembly is configured to conduct a DC current of the high-power DC circuit through the high-gauge wire. The high-gauge wire is configured to melt under a load of the DC current and interrupt the high-power DC circuit.

Abstract: A wafer-level assembly method for a micro hemispherical resonator gyroscope includes: after independently manufactured glass substrates are softened and deformed at a high temperature, forming a micro hemispherical resonator on the glass substrate; forming glass substrate alignment holes at both ends of the glass substrate by laser ablation; aligning and fixing a plurality of identical micro hemispherical resonators on a wafer fixture by using the alignment holes as a reference, and then performing operations by using the wafer fixture as a unit to implement subsequent processes that include: releasing the micro hemispherical resonators, metallizing the surface, fixing to the planar electrode substrates, separating the wafer fixture and cleaning to obtain a micro hemispherical resonator gyroscope driven by a bottom planar electrode substrate.

Abstract: A household energy storage system and a module fixing structure thereof are provided. The module fixing structure of the household energy storage system includes multiple modules and at least one first fixing member. The modules are stacked in at least one stacking direction; the first fixing member stretches across M modules in a stacking direction in which N modules are stacked, and only two ends of the first fixing member are fixed to two of the modules, respectively; N and M each is a positive integer, N is greater than or equal to 3 and M is less than or equal to N?2. In the above module fixing structure, only two modules of the stacked N modules are fixedly connected to the same first fixing member, and the M modules are not fixedly connected to the first fixing member, which reduces the number of fixed connections.

Abstract: The present invention discloses a hydrate energy-storage temperature-control material and a preparation method therefor. The material includes a refrigerant hydrate and a cross-linked polymer. The preparation method comprises the following steps: first, preparing a refrigerant hydrate by using a high-pressure reactor, and conducting grinding, crushing and sieving to obtain hydrate particles; then, uniformly spraying polytetrafluoroethylene suspended ultrafine powder onto the surface of the hydrate particles by using an electrostatic spraying device, and putting the hydrate particles into a plasma instrument to modify polytetrafluoroethylene so as to allow free radicals to be formed on the polytetrafluoroethylene powder surface; finally, subjecting monomers to graft polymerization with the free radicals on the polytetrafluoroethylene surface under the irradiation of a high-pressure mercury lamp of UV lighting system to stabilize the structure of the material, preparing a final product.

Abstract: Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.

Abstract: Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.

Abstract: Positioning method and apparatus provide two services: a first, common positioning service and a second, high-precision positioning service to an upper-layer application through permission control and an independent reporting channel design. For a common application, a positioning result can be reported with a first, common precision through a common reporting channel. For a high-precision application, a positioning result with a higher level of precision can be reported through a high-precision reporting channel. In this way, the channel for obtaining the positioning result by the common application is isolated from the channel for obtaining the positioning result by the high-precision application, thus improving output security of the high-precision positioning result and satisfying security requirements of different countries or regions.

Abstract: An audio watermark addition method is provided, and includes: A playback terminal obtains first audio in real time, embeds an audio watermark into the first audio, where the audio watermark is associated with the playback terminal; and plays the first audio embedded with the audio watermark.

Abstract: Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.

Abstract: A screw-driven control system includes a driving mechanism fixed in a cross beam, a guide locking piece and a limiting mechanism. The driving mechanism includes a screw rod and a motor driven nut assembly having a transmission frame, a nut sleeved in the screw rod, and a follow-up member fixed in the nut; the nut is mounted in the transmission frame, and the transmission frame is connected with a controlled object; the screw rod drives the nut assembly to reciprocate axially along the screw rod.

Abstract: An intelligent transfer vehicle for shared bicycles includes: a cockpit, a vehicle body platform, shared bicycle parking racks, a wheeled device, a power source unit, and a vehicle-mounted unit. The intelligent transfer vehicle combines the function of a parking platform and a transfer platform into one, and can have three transfer modes to reduce reliance on a dispatch center, save costs and improve transfer efficiency.

Abstract: An inward-swing door driving device, including a motor, a worm wheel and worm reducer driven by the motor, a positive clutch, an unlocking cylinder and an unlocking connecting mechanism. The positive clutch includes an inner tooth, an outer tooth and an elastic element. The inner tooth is in transmission connection with the worm wheel and worm reducer, and the outer tooth is in coaxial transmission with a door shaft of an inward-swing door. The unlocking cylinder includes a cylinder push rod. One end of the unlocking connecting mechanism is in contact with the end portion of the cylinder push rod, and the other end of the unlocking connecting mechanism is connected with the inner tooth.

Abstract: A door controller with an integrated data collection and transmission device, which comprises a motor driving module, a bus communication module, a vehicle door opening/closing control module, a parameter control module, and a data collection and transmission device. The data collection and transmission device is configured to receive and process four types of data collected by a motor driving data collection unit, a vehicle door opening/closing control data collection unit, an operation parameter collection unit, and a bus communication data collection unit, and transmit the four types of processed data to a background server.

Abstract: Electrically-operated inward-swing double doors and inward-swing door driving devices thereof. Each inward-swing door driving device includes a sector gear in coaxial transmission with a door shaft of the inward-swing door, a driving mechanism used for driving the sector gear to rotate, and an unlocking mechanism. The driving mechanism includes a motor gear and a motor driving the motor gear to rotate. The unlocking mechanism includes a cylinder, a cylinder push rod extending out of the cylinder, and a lock located at the end portion of the cylinder push rod. The tail end of the lock is in transmission connection with a wheel axle of the motor gear. The lock is provided with a lock rotating shaft for rotating horizontally around the lock. The lock rotating shaft is provided with an elastic element for applying twisting resilience force to the lock.

Abstract: A double sliding-plug door system includes a fixed frame, a sliding-plug rail arranged in the fixed frame, a cross beam, a driving mechanism, a linkage mechanism, a guide locking piece and a limiting mechanism. The driving mechanism has a screw rod and a motor driven nut assembly having a transmission frame, a nut sleeved in the screw rod and a follow-up member fixed in the nut; the nut mounted in the transmission frame, which itself is connected with an active sleeve assembly; the screw rod drives the nut assembly to reciprocate axially along the screw rod.

Abstract: A positioning server may acquire at least one candidate AP set from an initial AP set, wherein each of the at least one candidate AP set includes a preset number of APs enclosing a terminal which is to be positioned. The positioning server may select a target AP set from the at least one candidate AP set, wherein a distance from each of the APs included in the target AP set to the terminal is less than a preset threshold. The positioning server may determine the preset number of APs included in the target AP set as positioning APs for positioning the terminal.

Abstract: A door controller with an integrated data collection and transmission device, which comprises a motor driving module, a bus communication module, a vehicle door opening/closing control module, a parameter control module, and a data collection and transmission device. The data collection and transmission device is configured to receive and process four types of data collected by a motor driving data collection unit, a vehicle door opening/closing control data collection unit, an operation parameter collection unit, and a bus communication data collection unit, and transmit the four types of processed data to a background server.