Abstract: A blockchain-based interconnected vehicle authentication system and method. During message signature process, a registered vehicle verifies a driver, and broadcasts a message. During a message verification process, a registered vehicle checks the message authentication code from a received message based on the system key, and verifies the message based on a public key of a sender of the message. During a block generation and verification process, the first local trust authority broadcasts a block, and share the block to the second local trust authorities after the block passes verification. During a block confirmation process, second local trust authority makes confirmation with regard to the block and send a confirmation result to the root trust authority, to allow the root trust authority link the block into the blockchain in response to receiving confirmation results from second local trust authorities in a quantity exceeding a predetermined number.

Abstract: Data is received from a plurality of sensors mounted on an ADV being held to a standstill. A status of the ADV including a rolling speed of the ADV is detected based on the data from the plurality of sensors. One of a primary brake or a secondary brake is activated, in response to detecting the status of the ADV being a first status including the rolling speed being higher than zero and lower than a first predetermined speed threshold. An electronic parking brake is activated, in response to detecting the status of the ADV being a second status including the rolling speed being higher than the first predetermined speed threshold and lower than a second predetermined speed threshold. An engine brake may be used to reduce the crash damage, and a warning message (e.g., Message-4) may be generated.

Abstract: A battery connection structure includes a plurality of battery units connected in series. At least one battery unit is connected in series to other battery units through a temperature switch; the temperature switch includes a first connection member connected to a first electrode terminal of the battery unit and a second connection member connected to a second electrode terminal of the battery unit; at normal operating temperature, the first connection member and the second connection member are disconnected, and the first connection member and the second connection member are respectively connected to the two electrode terminals of the battery unit; when the temperature is higher than the normal operating temperature, the first connection member and/or the second connection member are/is deformed and disconnected from the corresponding electrode terminal(s) of the battery unit, and the first connection member and the second connection member are connected.

Abstract: A solar reflection full-band hyperspectral imaging detection system comprises a telescope light collection system, a field-of-view separation assembly, a spectrometer assembly, and a detector assembly. The field-of-view separation assembly comprises an integrated trisection field-of-view separator, a first field-of-view assembly, a second field-of-view assembly, and a third field-of-view assembly; the spectrometer assembly comprises a first spectrometer, a second spectrometer and a third spectrometer; and the detector assembly comprises a CMOS (Complementary Metal Oxide Semiconductor) detector, an InGaAs detector, and an HgCdTe detector. The present invention adopts the three-band spectrometer, and the spectrum aliasing, high photoelectric efficiency in the middle and low photoelectric efficiency at two ends, limited detection dynamic range, severe Etalon interference effect and the like of a two-band spectrometer with a traditional solar reflection full-band hyperspectral detection system are solved.

Abstract: The invention provides a method for cargo sorting, configured to control an end effector with a package placement platform to sort the cargo, and the method includes: moving the package placement platform to a package obtaining position and obtaining the cargo to be sorted that enters into the package placement platform; moving the package placement platform to a package storage location; and exerting a first force to push the cargo into a package storage unit. With the help of the package placement platform, the method of the invention can receive the packages of different types or different sizes or different material so as to sort and transport all kinds of packages.

Abstract: The present application relates to the technical field of polyaryletherketone, and discloses a preparation method for a coating material containing high-temperature self-crosslinking fluorine-containing polyaryletherketone. A molecular chain of the high-temperature self-crosslinking fluorine-containing polyaryletherketone contains two crosslinking groups of a styrene group and a thioether group, and its structural formula is: Herein, the value range of m is 1-40%, the value range of n is 60-99%, and R is a group that removes a phenolic hydroxyl group from hexafluorobisphenol A. In the high-temperature curing process after film coating, the crosslinking reaction occurs to form a crosslinked polymer coating layer, thereby a coating surface with good moisture and heat resistance, wear resistance, and low friction coefficient is formed.

Abstract: A display panel, a manufacturing method thereof, and a display terminal are provided. The display panel includes a substrate layer, an anode layer, a pixel separating layer, an organic light-emitting layer, and a cathode layer. The pixel separating layer includes a plurality of pixel opening regions and a non-opening region disposed between two adjacent pixel opening regions. The cathode layer includes at least one via hole corresponding to the non-opening region of the pixel separating layer.

Abstract: A short-term traffic flow prediction method based on a causal gated-low-pass graph convolutional network can include constructing a causal gated-low-pass graph convolutional network, where the causal gated-low-pass graph convolutional network includes a causal gated-low-pass convolutional block. The causal gated-low-pass convolutional block is connected to a fully-connected output layer, the causal gated-low-pass convolutional block includes two causal gated linear units and a low-pass graph convolutional block, and the low-pass graph convolutional block is set between the causal gated linear units. The method can further include obtaining a traffic flow network diagram and a traffic flow value based on traffic flow data, using the traffic flow network diagram as input, and performing short-term traffic flow prediction by using the causal gated-low-pass graph convolutional network. The method can predict short-term traffic flow with high accuracy.

Abstract: An OLED display device and a manufacturing method thereof are provided. The OLED display device includes a base substrate, a plurality of OLED devices, and a plurality of spacers. A plurality of OLED devices are disposed on the base substrate. At least part of the OLED devices are provided with an inorganic layer on a side away from the base substrate. At least part of the spacers are distributed at the gaps between the OLED devices. The OLED display device can prevent a problem of degradation of display quality due to external impact.

Abstract: An automatic locking device for assembling a part to a workpiece is provided. The device includes a feeding mechanism, a fixture mechanism, a loading and unloading mechanism, a lifting mechanism, a rotating mechanism, and a locking mechanism. The feeding mechanism feeds the part to the fixture mechanism. The loading and unloading mechanism places the workpiece on the part. The lifting mechanism lifts up the fixture mechanism together with the part and the workpiece. The rotating mechanism rotates the fixture mechanism. The locking mechanism locks the part to the workpiece after the part and the workpiece are rotated by the rotating mechanism. The automatic locking device integrates multiple functions in a single station, reduces the number of the work stations and operatives, lowers the cost, and improves accuracy of the assembly. An assembling apparatus including the automatic locking device is also provided.

Abstract: A storage medium, a robot, and a method for generating navigation map are provided. By disposing a first lidar and a second lidar located higher than the first lidar, it constructs a first map corresponding to the first lidar based on first laser data collected by the first lidar, and calculate second positioning data corresponding to the second lidar during constructing the first map, constructs a second map corresponding to the second lidar based on the second positioning data and second laser data collected by the second lidar, and obtains a navigation map corresponding to the robot by fusing the first map with the second map, such that the fused map includes not only positioning information provided by the first map, but also obstacle information provided by the first map and the second map.

Abstract: Provided are a recirculation system (200) for a material removal machine (102) and a material removal system (100). A material removal system (100) includes a recirculation system (200) in fluid communication with a material removal cabinet (104) housing a material removal machine (102). The recirculation system (200) may have an upper reservoir (300) configured to drain fluid into a lower reservoir (204) before recirculating the fluid. The upper reservoir (300) may have a standpipe (320) configured to allow swarf, debris, and/or other material within the fluid to be entrained prior to flowing over the standpipe (320).

Abstract: Vacuum systems for epoxy mounting of material samples are disclosed. In some examples, a vacuum system may be a castable and/or cold mounting vacuum system that facilitates mounting and/or encapsulation of material samples in epoxy resin under low, vacuum, and/or near vacuum pressure. In some examples, the vacuum system may comprise a flow control device configured to control epoxy flow through a dispensing tube that connects to a hollow vacuum chamber. In some examples, the vacuum chamber may have an opening encircled by a rim sandwiched between upper and lower portions of a sealing ring. A movable lid may be configured to press down on the upper portion of the sealing ring when in a closed position, so as to seal the opening.

Abstract: A map database creation method is provided. The method includes: obtaining a factor set including factors; dividing a map database into levels based on the factors, and taking each interval of the last level as one sub-database; creating an initial map based on a factor value of each factor corresponding to each sub-database, and creating the sub-database as an initial map database by storing the corresponding initial map in the sub-database; finding the initial map matching a current lighting condition from the initial map database based on the current lighting condition, and taking the found initial map as a positioning map; and performing a visual positioning based on the positioning map, creating an expanded map corresponding to the current lighting condition based on the visual positioning, and creating the sub-database corresponding to the current lighting condition as an expanded map database by storing the corresponding expanded map in the sub-database.

Abstract: Fluoride-containing nickel iron oxyhydroxide electrocatalysts for use as anodes in anion exchange membrane electrolyzers for generating hydrogen gas.

Abstract: A method and an apparatus for determining a road surface adhesion coefficient are provided. The method includes: determining, based on M state parameters of a vehicle on a target road section, M road surface adhesion coefficient estimation results respectively corresponding to the M state parameters, M being an integer greater than 1; selecting N road surface adhesion coefficient estimation results from the M road surface adhesion coefficient estimation results according to a traveling work condition of the vehicle on the target road section, N being a positive integer smaller than or equal to M; and determining a road surface adhesion coefficient of the target road section based on the N road surface adhesion coefficient estimation results.

Abstract: Embodiments of the present application provide a laser light source and a laser projection device. The laser light source includes a laser assembly and a light combination mirror assembly. The laser assembly includes at least a laser, a light emitting surface of the laser has a plurality of light emitting regions, and beams emitted from different ones of the plurality of light emitting regions are in different colors. The light combination mirror assembly includes a plurality of mirrors that are sequentially arranged along an optical transmission path of the laser, with each of the mirrors corresponding to one of the light emitting regions. The light combination mirror assembly is used to converge the beams in different colors emitted from the laser to form a white beam.

Abstract: A system and method for provide high quality audio in real-time communication over low bit rate network connections. The system includes real-time communication software application having an improved encoder and an improved decoder. The encoder decomposes audio data based on two frequency ranges corresponding to a super wideband mode and a wideband mode into a lower sub-band and a higher sub-band. Audio features are extracted from the lower sub-band and higher sub-band audio data. The audio features are quantized and packaged. The decoder reconstructs the audio data for playback on the receiving device based on the compressed audio features in the super wideband mode and the wideband mode.

Abstract: Embodiments of the present application provide a laser light source and a laser projection device. The laser light source includes a laser assembly, where the laser assembly includes a laser and a circuit board, the laser includes a substrate and a light emitting chip arranged on the substrate, a lateral surface of the substrate is provided with a plurality of pins extending outwards therefrom, the circuit board is arranged on a side where the pins extend, and the circuit board is electrically connected to the pins. The laser light source of the present application features simple assembling and disassembling, reliable performance and relatively low cost.