Abstract: A plate heat exchanger includes a number of first heat exchange plates and a number of second heat exchange plates. The plate heat exchanger has a first inter-plate channel and a second inter-plate channel. The first inter-plate channel is located between a front surface of the second heat exchange plate and an adjacent first heat exchange plate. The second inter-plate channel is located between a back surface of the second heat exchange plate and another adjacent first heat exchange plate. The first heat exchange plate has a first flat joint portion and a second flat joint portion. The front surface of the second flat joint portion is spaced apart from an adjacent first flat joint portion. The plate heat exchanger includes at least one connection portion connecting the front surface of the second flat joint portion and the adjacent first flat joint portion.

Abstract: The present application discloses an optical imaging lens, comprising, in order from an object side to an image side along an optical axis: a first lens having a positive refractive power; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens; a fifth lens having a negative refractive power; and a sixth lens having a positive refractive power, wherein a distance TTL from an object side surface of the first lens to an imaging plane of the optical imaging lens on the optical axis and an entrance pupil diameter EPD of the optical imaging lens satisfy TTL/EPD<1.9; and a total effective focal length f of the optical imaging lens satisfies 6.0 mm<f<7.5 mm.

Abstract: A pyram-shaped deep-sea pressure-resistance shell and a design method therefor. The shell comprises a conical shell, an annular combined shell, a cylindrical shell, a flange bolt, and a perforated thick plate; a bottom end of the conical shell is connected with a top end of the annular combined shell, the conical shell being in communication with an interior part of the annular combined shell; the perforated thick plate blocks the bottom end of the annular combined shell, the perforated thick plate and the annular combined shell being connected by means of multiple flange bolts; the cylindrical shell is disposed inside the annular combined shell, a lower end of the cylindrical shell being inserted in a gap between the annular combined shell and the perforated thick plate.

Abstract: A live detection system, a thermal infrared (IR) imager and a method for power grid equipment are provided. The system includes an environmental parameter module for acquiring environmental temperature, humidity and wind speed data; a ranging module for measuring a linear distance to the power grid equipment; an equipment type recognition module for acquiring an image of the power grid equipment, and recognizing a type of the power grid equipment; an equipment material determination module for determining a material type of the power grid equipment; an emissivity setting module for setting an emissivity; an temperature measurement module for obtaining a temperature of the power grid equipment by focusing on positions of the power grid equipment which need temperature measurement; and a report generation module for selecting a corresponding diagnostic model, displaying a temperature measurement position and a temperature value, drawing a conclusion, and generating a report.

Abstract: The present disclosure provides an image processing method, apparatus, and device, and a storage medium. The method includes determining, in response to receiving a preset identification operation triggered for a capturing frame on a capturing page, a target image having image clarity meeting a preset clarity condition based on the capturing frame on the capturing page. Then, the target image is transmitted to an image identification server for image identifying. Thus, the image processing method provided in the embodiments of the present disclosure can determine a target image having image clarity meeting a preset clarity condition first before image identification and allow an image identification server to perform identification based on the target image which meets the preset clarity condition, thereby the accuracy of image identification can be improved.

Abstract: Disclosed is an electrical capacitance volume tomography applied to flow monitoring in a Venturi tube of a cryogenic fluid (such as liquid nitrogen (˜78K) and liquid oxygen (˜90K)). The device includes a conductor rod, a metal shell, a Venturi tube, an electrode plate sleeve, an electrode plate and annular connecting shells. According to the device, an electrode plate and electrode plate sleeves which are attached to the surface of a Venturi tube are arranged according to the variable-diameter characteristic of the Venturi tube, meanwhile, a corresponding wire connecting structure is designed, and a shielding shell is designed according to the characteristic that electrical capacitance volume tomography needs shielding. The device has the advantages of being simple and stable in structure, easy to disassemble and assemble, capable of being disassembled and assembled many times and capable of being rapidly connected with other pipelines.

Abstract: A DC-DC converter, an on-board charger, and an electric vehicle are disclosed. The DC-DC converter includes: a first adjustment module, a resonance module, a second adjustment module, a current detection module, and a controller. The current detection module is configured to detect a current signal of the resonance module; and the controller is configured to control the first adjustment module and the second adjustment module to reduce an output power when the current signal is greater than a current threshold. By directly detecting the current signal of the resonance module, a high precision and a faster response are achieved.

Abstract: A DC-DC converter, an on-board charger, and an electric vehicle are disclosed. The DCDC converter includes: a first adjustment module, a resonance module, a second adjustment module, a current detection module, and a controller. The current detection module is configured to detect a current signal of the resonance module; and the controller is configured to control the first adjustment module and the second adjustment module to reduce an output power when the current signal is greater than a current threshold. By directly detecting the current signal of the resonance module, a high precision and a faster response are achieved.

Abstract: A DC-DC converter, an on-board charger, and an electric vehicle are disclosed. The DC-DC converter includes: a first adjustment module, a resonance module, a second adjustment module, a current detection module, and a controller. The current detection module is configured to detect a current signal of the resonance module; and the controller is configured to control the first adjustment module and the second adjustment module to reduce an output power when the current signal is greater than a current threshold. By directly detecting the current signal of the resonance module, a high precision and a faster response are achieved.

Abstract: The present disclosure provides an end-to-end cargo handling system. The end-to-end cargo handling system comprises a transportation unit comprising a first sensing agent, a lift unit comprising a second sensing agent, and a control module in communication with the transportation unit and the lift unit via a network, wherein the transportation unit and the lift unit are configured to move a cargo unit from a first location to a second location autonomously.

Abstract: A plate heat exchanger includes a number of first heat exchange plates and a number of second heat exchange plates. The first heat exchange plate includes a first wave crest and a first wave trough. The second heat exchange plate includes a second wave crest and a second wave trough. Along a thickness direction, a maximum distance between the first wave crest and the first wave trough is h. In a direction of a shortest line connecting tops of adjacent first wave crests, a minimum connecting width of the first wave trough and the second wave crest is W1, and a minimum connecting width of the first wave crest and the second wave trough is W2. At least one of a ratio of W1/h and a ratio of W2/h is within a range of 0.25 to 2.5 to ensure the connection strength between adjacent heat exchange plates.

Abstract: An optical imaging system, including: a lens barrel structure, including a first lens barrel and a subsequent lens barrel that are arranged sequentially along an optical axis from an object side to an image side; an imaging lens group, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens that are arranged sequentially along the optical axis from the object side to the image side; and a plurality of spacing elements, including a second spacing element that is at least partially in contact with an image-side surface of the second lens and a third spacing element that is at least partially in contact with an image-side surface of the third lens.

Abstract: The present disclosure provides an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having refractive power; a second lens having refractive power; and a third lens having refractive power. A center thickness CT1 of the first lens along the optical axis and a maximum effective radius DT11 of an object-side surface of the first lens satisfy: 1.0<CT1/DT11<2.0.

Abstract: The present disclosure provides an end-to-end cargo handling system. The end-to-end cargo handling system comprises a transportation unit comprising a first sensing agent, a lift unit comprising a second sensing agent, and a control module in communication with the transportation unit and the lift unit via a network, wherein the transportation unit and the lift unit are configured to move a cargo unit from a first location to a second location autonomously.

Abstract: The disclosed embodiments relate to systems and methods for a surgical tool or a surgical robotic system.

Abstract: The disclosed embodiments relate to systems and methods for a surgical tool or a surgical robotic system. An example computer-implemented method for evaluating calibrations of a surgical tool includes fixating a joint of the surgical tool at a first angle, the joint being driven by an actuator, measuring an actuator position corresponding to the first angle, accessing a calibrated offset corresponding to the first angle, determining an expected joint angle based on the measured actuator position and the calibrated offset, and reporting a first difference between the expected joint angle and the first angle.

Abstract: The present disclosure provides an end-to-end cargo handling system. The end-to-end cargo handling system comprises a transportation unit comprising a first sensing agent, a lift unit comprising a second sensing agent, and a control module in communication with the transportation unit and the lift unit via a network, wherein the transportation unit and the lift unit are configured to move a cargo unit from a first location to a second location autonomously.

Abstract: The disclosure provides an optical imaging camera lens assembly, sequentially including, from an object side to an image side along an optical axis: a first lens having a positive refractive power; a second lens, an object-side surface thereof being a convex surface, and an image-side surface thereof being a concave surface; a third lens having a negative refractive power, and an object-side surface thereof being a convex surface; a fourth lens; a fifth lens having a negative refractive power; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power, wherein ImgH is a half of a diagonal length of an effective pixel region on an imaging surface, and TTL is an on-axis distance from the object-side surface of the first lens to the imaging surface, ImgH and TTL satisfy: 4.8 mm<ImgH*ImgH/TTL<7.0 mm; an Abbe number V1 of the first lens satisfies: 70<V1<90.

Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens with a positive refractive power, an object-side surface thereof is a convex surface, and an image-side surface thereof is a concave surface; a second lens with a negative refractive power; a third lens with a refractive power; a fourth lens with a positive refractive power; and a fifth lens with a negative refractive power; VP is an on-axis distance from an intersection point of a straight line where a marginal ray of the optical imaging lens assembly is located and the optical axis to the object-side surface of the first lens, and VP satisfies 0 mm<VP<1.5 mm.

Abstract: The present disclosure discloses an optical imaging system including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, each of which has refractive power. An object-side surface of the first lens is concave, and an image-side surface thereof is convex; the sixth lens has a positive refractive power; and the seventh lens has a negative refractive power, and an object-side surface thereof is convex. Half of a diagonal length ImgH of an effective pixel area on an imaging plane of the optical imaging system satisfies 6 mm<ImgH<7 mm; and a total effective focal length f of the optical imaging system and an effective focal length f6 of the sixth lens satisfy 0.22?f/f6<1.