Abstract: A multi-channel detecting circuit including a priority-setting circuit and an ADC (analog-to-digital converting) circuit is provided. The priority-setting circuit receives a plurality of sampled signals and a set signal, and provides the plurality of sampled signals at different output frequencies determined by the set signal. The ADC circuit receives the plurality of sampled signals, and respectively converts the plurality of sampled signals to a plurality of digital signals one by one.

Abstract: Various methods and systems are disclosed to improve detection probability of time of flight lidar systems by generating real-time background signals for individual pixels of a sensor of the lidar detection system and use the background signals to dynamically control the detection system of the lidar. The background signals, that indicate the amount of background light received by different pixels, are used for controlling the detection system by adjusting at least one of the optical system, the sensor, and the readout system of the detection system in order to reduce the impact of the back ground light on the detection and range finding functionality of the lidar.

Abstract: Various methods and systems are disclosed to improve the reliability and accuracy of a time of flight lidar systems by generating real-time background signals for individual pixels of a sensor of the lidar detection system and use the background signals to generate confidence signals. The confidence signal indicates validity of a return signal or a probability that the return signal is not associated with interference with another lidar or light source. The confidence signals may be used by the lidar system to reduce the false alarm rate of the lidar.

Abstract: The present disclosure relates to a static CT detection device, including: a shielding body, formed with a detection channel through which an object under detection can pass; a ray source, emitting rays for detecting the object under detection when the object under detection passes through the detection channel; and a detector, for acquiring the rays emitted by the ray source and having passed through the detection channel, wherein the shielding body is formed with an opening portion, and the opening portion extends from an inlet of the detection channel to an outlet of the detection channel.

Abstract: An aluminum borate whisker reinforced and toughened non-metallic matrix composite is provided, which specifically includes a non-metallic material reinforced and toughened with aluminum borate whiskers. The composite exhibits a higher bending strength and fracture toughness and a higher wear resistance. A method for preparing the composite is also provided. The method includes mixing the aluminum borate whiskers and the non-metallic material to form a mixture; and sintering the mixture by a vacuum hot press method, or molding the mixture.

Abstract: Disclosed is a method for identifying fragile lines in power grid based on electrical betweenness, which comprises the following steps: constructing the power grid into a network diagram, sequentially removing lines in the network diagram, and sorting the electrical betweenness of each line from large to small; constructing a nonlinear model of complex network cascade failure considering overload and weighted edges, and respectively performing two ways of removing lines for sorted electrical betweenness, namely sequentially removing preset proportion lines and sequentially removing all lines until no new lines are removed in the network diagram; obtaining a change of generator-load power before and after each line removal, and evaluating a severity of power grid failure based on the change of generator-load power, thus completing an identification of power grid fragile lines.

Abstract: An apparatus such as a power supply includes a controller and multiple power converter phases. The controller controls operation of the multiple power converter phases to produce an output voltage that powers a load. The multiple power converter phases are coupled in parallel to convert an input voltage into an output voltage. The controller further controls a flow of current through a series circuit path connecting multiple windings of the multiple power converter phases to operate the power supply in different modes.

Abstract: A power system having a power input terminal adapted to receive a bus voltage and a sense terminal adapted to receive a sense voltage indicative of the bus voltage. The power system may further include a bi-directional converter having a first terminal and a second terminal. The first terminal of the bi-directional converter may be coupled to the power input terminal. In an embodiment, when the sense voltage is decreased to reach or to be lower than the reference voltage, the bi-directional converter may be adapted to be configured to operate in a release mode to provide a release voltage at the first terminal. The release voltage may vary in accordance with varying in a transition voltage threshold that is a voltage value of the bus voltage at a moment when the sense voltage decreases to reach the reference voltage.

Abstract: A low dropout regulator circuit with reduced overshoot and undershoot during transient state is discussed. The low dropout regulator circuit has a power device operating at a restive region, a first amplification stage and a second amplification stage. The first amplification stage amplifies a difference between a feedback voltage and a reference voltage to generate a positive signal and a negative signal. The feedback voltage is derived from an output voltage via a feedback resistor network. The second amplification stage amplifies a difference between the positive signal and a sum of a feed forward signal and the negative signal to generate an amplified signal. The feed forward signal is derived from an output voltage via a capacitor network.

Abstract: This application provides an optical device and a method of adjusting an optical device. The optical device includes an emitting assembly, a beam splitting assembly, and a receiving assembly. The emitting assembly is configured to emit an outgoing light signal. The beam splitting assembly is configured to pass the outgoing light signal from the emitting assembly to a detection region, receive a reflected light signal from the detection region, and modify a transmission direction of the reflected light signal. The receiving assembly is configured to receive the reflected light signal from the beam splitting assembly after the direction modification and generate an electrical signal in response to the reflected light signal.

Abstract: A method and system for advanced detection and optimization of tunnel resistivity based on depth resolution.

Abstract: A modular design structure of in-vehicle electrical appliances includes: a mobile power supply and a detachable device. The mobile power supply is disposed with an input interface and an output interface for power input and output, internally disposed with a power battery pack and a circuit control board and disposed with a mounting part including a top cover, a side wall of the top cover is disposed with a snap structure, an end of the top cover is disposed with current output contacts. The detachable device includes electrical modules each with a connecting part including a bottom cover, a side wall of the bottom cover is disposed with a notch matching with the snap structure, an end of the bottom cover is disposed with current input contacts matching with the current output contacts. Through modular design, the vehicle electrical appliance is smaller and convenient to carry.

Abstract: This application provides techniques of generating non-fungible token props to be displayed in live rooms. The techniques comprise determining a virtual prop associated with one of a plurality of live rooms in which an online streamer performs livestreaming; determining a set of material components of the virtual prop; generating a set of visual materials based on configuring a plurality of visual materials for each of the set of material components; and generating a set of non-fungible token props corresponding to the virtual prop based on a plurality of sets of visual materials corresponding to the set of material components, wherein an identifier is assigned to each of the set of non-fungible token props for identification.

Abstract: An adsorbent is in a liquid-phase hydrogenation catalyst composition. A catalyst bed containing the liquid-phase hydrogenation catalyst composition may be applicable in adsorption technology or oil liquid-phase hydrogenation technology. The adsorbent contains a porous material and a hydrogenation active metal supported on the porous material. The adsorbent has an average pore diameter of 2-15 nm, a specific surface area of 200-500 m2/g, and the hydrogenation active metal is present in an amount, calculated as metal oxide, of 2.5 wt % or less, based on the total weight of the adsorbent. The adsorbent has a high hydrogen sulfide adsorption efficiency for a long period of time, and can effectively prolong the protection period for the hydrodesulfurization catalyst.

Abstract: A solid particle bed has a sea zone and at least one island zone distributed in the sea zone, and has an upper surface, a lower surface, an axial direction and a radial direction. The island zone extends along the axial direction of the solid particle bed but does not extend to the lower surface, and the voidage of the island zone is 110-300% of the voidage of the sea zone. In the solid particle bed, the oil preferentially enters the packing area with a small voidage through the tail section of the packing area with a large voidage. As the deposition amount increases, the oil gradually changes its way by entering the packing area with a small voidage through the side of the packing area with a large voidage.

Abstract: A method for adjusting a release voltage of a power system. The power converter has a power input terminal for receiving a bus voltage, a first resistor coupled between the power input terminal and a sense terminal, a second resistor coupled between the sense terminal and a reference ground, and a bi-directional converter having a first terminal coupled to the power input terminal. The bi-directional converter converts the bus voltage received at the first terminal to a first voltage at a second terminal or converts the first voltage to the release voltage at the first terminal. The method is adjusting the release voltage by changing the ratio of the first resistor to the second resistor.