Abstract: A travel route determination system including: a route generating unit generating planned travel routes including work routes along which a work vehicle performs autonomous travel; a control unit capable of causing the work vehicle to perform autonomous travel along the planned travel routes; an information obtaining unit obtaining position information and orientation information on the work vehicle; and a determination unit determining an autonomous travel candidate route at which the work vehicle can start autonomous travel, before the work vehicle starts autonomous travel. The determination unit sets a candidate determination region based on the position information and orientation information on the work vehicle, and the determination unit determines, among the work routes, a work route in the candidate determination region as the autonomous travel candidate route.

Abstract: This application provides a communications method and apparatus. According to the method, a receiving terminal receives, from one or more sending terminals, X PSSCHs that are in a one-to-one correspondence with X PSFCH resources, determines M PSFCH resources based on priorities of the X PSFCH resources, transmit power corresponding to the X PSFCH resources, and total transmit power of the receiving terminal, and sends feedback information to some or all of the one or more sending terminals on the M PSFCH resources, so that the receiving terminal can send the M PSFCH resources based on a sending capability (namely, the total transmit power) of the receiving terminal. This improves overall performance of a network system.

Abstract: The embodiment of the present disclosure provides a method and Internet of Things system for managing inspection route based on a gas Geographic Information System (GIS). The method is executed by a smart gas safety management platform of the Internet of Things system, comprising: determining track information of an inspector according to location data of the inspector; in response to the track information satisfying a preset requirement, determining a recommended inspection route based on the track information and gas monitoring data, and prompt the recommended inspection route through a display screen based on a first display parameter; in response to the track information not satisfying the preset requirement, determining a display condition of the display screen based on a second display parameter.

Abstract: A cover includes a cover body and a first line layer. The cover body is made of an insulating material, and the first line layer is made of a conductive material. The first line layer is completely built into the cover body, and the first line layer is configured to form a radiator, and is coupled to a radio frequency transceiver circuit of an electronic device. The first line layer includes a plurality of first conducting wires and a plurality of second conducting wires. The plurality of first conducting wires are arranged at intervals in a first direction, and the plurality of second conducting wires are arranged at intervals in a second direction. The plurality of first conducting wires and the plurality of second conducting wires are disposed intersecting each other. The first direction is different from the second direction.

Abstract: The present disclosure provides a method for detecting light leakage of a screen, a method for detecting ambient light, and an apparatus for detecting ambient light. The method for detecting light leakage of a screen includes: acquiring display parameters of a screen, the display parameters including: a brightness value of the screen and grayscale values of respective pixel points within a preset display region of the screen; inputting the display parameters into a pre-trained neural network model, to process the display parameters using the neural network model, to obtain light leakage values corresponding to the respective pixel points; and obtaining a light leakage value of the screen based on the light leakage values corresponding to the respective pixel points. Based on the above technical solutions, the light leakage value of the screen can be accurately and reliably determined.

Abstract: The present disclosure provides a distance measuring device and a sweeping robot. The distance measuring device includes a base, a baffle, a drive assembly, a ranging component, and a driving component. The baffle is arranged over the base, and may prevent foreign matters over the baffle from intruding into the drive assembly. The baffle may be a portion extended upwards from the base, or may be arranged over the base in a mounting manner. The drive assembly may transmit power of the driving component to the ranging component. The driving component and the ranging component are mounted on the base. The baffle is arranged over the base, and defines a closed or a semi-closed mounting chamber with the base to block foreign matters from intruding into the drive assembly.

Abstract: The present disclosure relates to a domain name encryption method, decryption method, and apparatus based on a content delivery network. The method comprises: receiving an access request for an initial server sent by a terminal; acquiring, in a case that the initial server needs to be redirected to a target server, a synthetic record domain name of the target server, the synthetic record domain name carrying a domain name resolution result of the target server; and encrypting the synthetic record domain name to obtain an encrypted synthetic record domain name, and sending the encrypted synthetic record domain name to the terminal. By encrypting the synthetic record domain name, an illegal user can be prevented from knowing data information about the domain name resolution result in the synthetic record domain name, which can improve the security of the data, and can significantly improve the processing efficiency of the domain name.

Abstract: Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter capacitor. Both a first terminal of the failure isolation module and a first terminal of the soft start module are connected to a positive electrode of a first battery, both a second terminal of the failure isolation module and a second terminal of the soft start module are connected to a first terminal of the output filter capacitor, and a second terminal of the output filter capacitor is connected to a negative electrode of the first battery. The soft start module is configured to connect the first battery and the output filter capacitor, so that the first battery charges the output filter capacitor.

Abstract: A gas turbine overspeed protection method includes: a power utilization load of a generator is acquired, and a rotating speed value of a gas turbine is acquired; whether the power utilization load suddenly decreases or disappears is judged, and if so, an eddy current retarder is controlled by a controller to simulate the power utilization load to provide a braking torque for the generator; or, whether the rotating speed value exceeds a set speed range is judged, and if so, the gas turbine is controlled by the controller to reduce fuel supply, and a discharge valve of a gas compressor is opened to discharge a high-pressure gas to reduce the power output and the rotating speed of the gas turbine.

Abstract: The disclosure provides a radar ranging method and device, a radar, and an in-vehicle system. An example method includes: obtaining a pulse waveform of a transmit signal sent to a target object by a radar; obtaining a sampling sequence of an echo signal received by the radar; determining, in sampling points on a rising edge of the sampling sequence, a first timing point used to indicate a receive moment of the echo signal; determining, based on the first timing point and the pulse waveform of the transmit signal, a second timing point used to indicate a transmit moment of the transmit signal; and calculating a distance between the radar and the target object based on the first timing point and the second timing point.

Abstract: The present disclosure an electric fence device, including a transmitter and at least one receiver. The transmitter includes a first integrated circuit board; wherein, the first integrated circuit board is arranged with a first radar module and a first wireless transceiver module. The at least one receiver is configured to be worn on a pet. The receiver comprises a second integrated circuit board; the second integrated circuit board is arranged with a second radar module and a second wireless transceiver module. The first radar module and the second radar module are communicatively connected to each other perform measurement signal transmission to determine a location of the pet; the first wireless transceiver module and the second wireless transceiver module are communicatively connected to each other to perform instruction signal transmission and data feedback.

Abstract: The disclosure discloses a naphthalene isoxazoline compound and an application thereof. The compound is referred to as 4-(5-(3-chloro-5-(trifluoromethyl)phenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-N-((methoxylimino)methyl)-1-naphthyl formamide, is a novel ?-aminobutyric acid (GABA) gated chloride ion channel allosteric modulator type insecticide, and can be applied to the prevention and control of various pests and/or pest mites in agriculture. Compared with commercially available agricultural insecticides, the compound has better insecticidal effects and also has a wider insecticidal range. In addition, a synthesis process for the novel compound is easy to operate and has high safety, and the compound has great application potential.