Abstract: The present disclosure provides a series battery pack capacity on-line monitoring and charging/discharging dual-state equalization circuit and method. The series battery pack capacity on-line monitoring and charging/discharging dual-state equalization circuit includes a storage battery pack, a gating switch array, a power dissipation loop, a polarity matching switch array, an isolated DC/DC converter, a bipolar differential battery voltage measurement circuit, a micro controller unit, a charging/discharging current detection loop, and a switch circuit unit. According to the present disclosure, each series battery of the storage battery pack can be separately charged and discharged by controlling the gating switch array, the storage battery pack capacity can be detected on line, bypass discharge and parallel supplement can be carried out on the series batteries with high or low relative state of charge in two states of charging and discharging, and the power of each series battery can be efficiently equalized.

Abstract: A fast industrial CT scanning system and a method are provided. The scanning system includes X-ray sources, detectors, a rotating table, control boxes, and a control unit. The X-ray sources, the detectors, the rotating table, and the control boxes are all connected to the control unit. The rotating table is used for placing a specimen detected. Three X-ray sources are annularly and uniformly arranged at an interval of 120° by taking an axis of the rotating table as a center. Distances from the three X-ray sources to the specimen detected are equal. Each X-ray source is mounted in a corresponding control box. Three detectors are annularly and uniformly arranged at an interval of 120° by taking the axis of the rotating table as a center. Distances from the three detectors to the specimen detected are equal.

Abstract: The present application relates to a detection structure for fast neutrons and a method for acquiring a neutron energy spectrum, the detection structure for fast neutrons comprises seven semiconductor detection units and a conversion layer made of a hydrogen-containing material, the seven semiconductor detection units comprise a first, a second, a third, a fourth, a fifth, a sixth and a seventh semiconductor detection unit arranged sequentially, the first, the fourth and the seventh semiconductor detection unit constitute an anticoincidence detection group, the second and the third semiconductor detection unit constitute a neutral particle background detection group, the fifth and the sixth semiconductor detection unit constitute a recoil proton detection group, the conversion layer is disposed between the fourth and the fifth semiconductor detection unit, incident neutrons collision with hydrogen atomic nuclei and generate the recoil protons.

Abstract: A dynamic load shearing test device and method based on a hopkinson bar system are provided in this disclosure, which relates to the technical field of rock detection tests. The device according to the disclosure includes a bearing frame, a carriage, a sample holding unit, a pressure environment generating unit, a sample switching unit, an incident bar and a transmission bar, and the test method includes following steps: test device assembly, device leveling, pre-test preparation, test conducting, sample angle switching and test device resetting. The disclosure has advantages that the cylindrical sample can be quickly fixed, a required temperature environment can be well maintained, the cylindrical sample can be better fixed in a high-pressure environment, rotation of the cylindrical sample is not hindered in a low-pressure environment, switching of test positions is facilitated, and test efficiency can be accelerated.

Abstract: The disclosure provides an efficient and stable inorganic lead-free perovskite solar cell and a method for preparing the same. The solar cell includes a conductive substrate, a PEDOT: PSS layer, an inorganic lead-free CsSnI3 perovskite layer, a C60 layer, a BCP layer, and a metal counter electrode layer arranged in order from bottom to top, wherein the inorganic lead-free CsSnI3 perovskite layer is a CsSnI3 perovskite layer passivated by a thioureas small-molecule organic compound.

Abstract: Provided a device and method for paperboard stamping forming, relates to the technical field of paper material stamping forming equipment, comprising a punch-pin and a pressure-applying component, the pressure-applying component acting on a paperboard through a fluid medium; before the punch-pin carries out a stamping forming on the paperboard, the pressure-applying component pre-deforms the paperboard and a direction of the pre-deformation is opposite to a direction of the stamping forming; aiming to the current problem that the forming depth that is difficult to meet requirements resulted in the paperboard forming paper container limited by the deformation capacity of the paperboard, the forming depth of the paper container is improved by making the paperboard deform twice in opposite directions, bringing into play the deformation capacity of the full area of the paperboard, increasing the deformable amount of the paperboard, and reducing problems such as cracks and breakage in the forming process.

Abstract: A ceramic tool with integrated temperature sensing and cutting functions and preparation method and application thereof. The ceramic tool comprises a ceramic matrix, a positive thermoelectric layer and a negative thermoelectric layer being provided on two surfaces of the ceramic matrix; the ceramic matrix being formed by sintering a first matrix material, a first binding agent and a first reinforcing phase, and the thermoelectric layer being formed by sintering of a thermoelectric material; the first matrix material comprises one or more of Al2O3, Si3N4 and CBN; the first binding agent comprises one or more of Mo, Ni, Co, W and Cr; the first reinforcing phase comprises one or more of TiC, WC, SiC, MgO, Cr2O3, TiO2 and ZrO2; the thermoelectric material for the positive thermoelectric layer comprises ZrB2 and SiC; the thermoelectric material for the negative thermoelectric layer comprises ZrB2, SiC, and graphite.

Abstract: A mobile manipulation control method of a quadruped robot with an operation arm, including: obtaining current pose information of the legged mobile manipulator; decomposing a task into subtasks, and prioritizing the subtasks; based on the pose information and a dynamic model, generating a motion trajectory under each subtask; based on the dynamic model, optimizing an optimal plantar force of a supporting leg and an end-of-arm force under each subtask; based on a multi-task spatial projection method, calculating desired control quantity of all joints under different subtasks; and (d) optimizing the optimal plantar force and the desired control quantity with the whole-body dynamic model as a constraint to obtain control torques; and based on the control torques, controlling the legged mobile manipulator's motion. A control system is further provided.

Abstract: A method and system for high-speed transient thermal simulation of an electronic device and belongs to the technical field of high-speed transient thermal simulation of electronic devices. According to acquired parameter data of the electronic device, a dynamic weak balance relationship among heat generation amount, internal energy increment and heat dissipation amount of the electronic device is calculated to obtain a functional relationship between operating temperature and time of the electronic device; a trough temperature value of a transient temperature curve of electronic device in weak balance state is obtained by limit solving algorithm; an initial temperature is set in a manner of loading a fixed-temperature heat source, and simulating calculation is performed for a first preset number of cycles to obtain an initial temperature field; and a high-speed transient temperature change of the electronic device is obtained by the operation of a second preset number of pulse stress cycles.

Abstract: A wind power prediction method and system based on a deep deterministic policy gradient (DDPG) algorithm is provided and relates to the technical field of wind power prediction. The method uses multiple different prediction methods to build a combined prediction sub-model, and then uses a DDPG algorithm to maximize discount benefit by using an agent in the algorithm to interact with an external prediction environment for constant trial-and-error attempts. Finally, the agent has a capability of perceiving the external prediction environment, and a capability of reasonably and dynamically assigning weights to various prediction sub-models in a combined model, so as to achieve an accurate prediction.

Abstract: Provided a bolt-bearing circumferential device for reinforcing and correcting an angle iron of a transmission tower, comprising a reinforcing angle iron, a holding hoop, and a connector; the reinforcing angle iron is arranged at an inner side of two limbs of an angle iron to be reinforced, an axis direction of the reinforcing angle iron is parallel to the angle iron to be reinforced, and an outer wall of two limbs of the reinforcing angle iron are fitted with an inner wall of the angle iron to be reinforced; the holding hoop is arranged at an outer side of the reinforcing angle iron and the angle iron to be reinforced, and each part of the holding hoop are connected together through the high-strength bolts; a side wall of the holding hoop is provided with three groups of threaded holes, wherein an axis of a first group of the threaded holes and an axis of a second group of the threaded holes are perpendicular to each other, a first group of bolts pass through the first group of the threaded holes to apply a r

Abstract: A volume measurement system and method for a closed water-filled karst cave, including a water collecting device, concentration tester and control system. The control system is connected to the water collecting device by a connecting piece. The water collecting device is a container with a top closed and bottom open. The water collecting device top is a piston. The piston is connected to a propulsion rod, and propulsion rod is controlled by control system to extend or retract, so as to realize the forward or backward movement of the piston. An openable and closeable placement table is hinged to the water collecting device's inner wall. The placement table is connected to piston, the placement table moves upward when piston is raised, and placement table moves downward when piston is lowered. The placement table is configured to accommodate a chemical substance. The concentration tester is configured to detect the solution's concentration.

Abstract: An intelligent integrated anti-collision system and method for a pier, including: a radar sensing device disposed at the joint between the pier and a girder, image collection devices disposed around the pier, control system, hydraulic system and execution device, where the radar sensing and image collection devices transmit collected signals to the control system, which uses the hydraulic system to control the action of the execution device; the execution device is disposed at a middle part of the pier and includes a plurality of sections of steel-reinforced rubber concrete girder connected end to end through pulleys, the hydraulic system can drive the pulleys to rotate to enable the sections to be located on the same horizontal line, and an energy dissipation apparatus is disposed at the tail end of the last section to realize energy dissipation of the energy generated by impact when an object impacts the energy dissipation apparatus.

Abstract: A system and method for identifying lithology based on images and XRF mineral inversion solving the problem that conventional lithology identification relies on manual work, which is time-consuming, subjective and can cause misjudgment. The identification system includes an autonomous vehicle; an X ray fluorescence spectrometer probe, and tests surrounding rock element information; image collection device; and vehicle-mounted processor. The processor inverts the received surrounding rock element information into mineral information based on a Barthes-Niggli standard mineral calculation method; and receive surrounding rock images and a corresponding inclination angle thereof, convert the surrounding rock images into image information in a one-dimensional vector format, splice the image and mineral information which is in a one-dimensional format, and distinguish the spliced information based on a preset neural network to identify rock lithology.

Abstract: A motion estimation method and a system in inter-frame prediction coding of 3D point cloud data: first, isometric sub-sampling is performed for points in pc_likely_world, then, the sampled points were divided into uniform small cubes, and the centroid of point cloud location information in each small cube was calculated, and the points closest to the centroid were found, and these points were put into pc_world_target. Finally, the corresponding point pc_world_ref is found in the reference frame, and the LMS algorithm is used to calculate the global motion matrix; by reserving the centroid points in each block, the method not only effectively removes the redundant points to reduce the computational complexity of the global motion matrix but also preserves the points that represent the characteristics of the point cloud to ensure the computational accuracy of the global motion matrix.

Abstract: The present disclosure relates to a NiTi alloy surface cutting process and a roughness adjustment method. Aiming at defects of difficult machining and unsatisfactory machining performance of Ni-Ti alloys, the present disclosure provides a surface cutting process of a difficult-to-machine nickel-titanium alloy, in which firstly, the nickel-titanium alloy is transformed from a two-phase state to a single-phase state using its transformation characteristic, and electrochemical nickel removal treatment is carried out on a surface of the alloy in the single-phase state so as to obtain a porous surface layer, and then a surface material with the porous surface layer is cut. The method provided by the present disclosure can effectively reduce machining difficulty of alloy materials, and can also obtain alloy workpieces with adjustable roughness, which is of great significance for NiTi alloy machining.

Abstract: A method and system for exploring hidden karst pipelines, mainly comprising: determining an upstream and a downstream of an underground karst pipeline; laying a grounding electrode at the upstream and the downstream respectively; establishing an electromagnetic emission system through underground karst water channels in the underground karst pipeline in a survey area, a transmitter and a generator; arranging a receiving system through an air mobile equipment towing a receiver as a receiving end; turning on the electromagnetic emission system; a generator supplying power to emission circuit; controlling the air mobile equipment to move along routes to collect signal continuously above the survey area, to complete an area-based measurement, and obtain observed data in the whole survey area; processing the observed data; delineating a concrete distribution of the underground karst water channels from the to the, such as a net-shaped path diagram or a tree-shaped path diagram

Abstract: Disclosed are a method and culture medium for performing an in vivo treatment on ovaries of mammals including humans or performing in vitro culturing on ex vivo ovaries or ovarian tissue by means of using 4-vinylcyclohexene diepoxide. The method or culture medium provided facilitates the retention and enhancement of the developmental and reproductive potential of mammalian ovaries or ovarian tissue, and is particularly capable of promoting follicle maturation and increasing the number of ovulations.

Abstract: A two-dimensional scalar field data visualization method and system based on colormap optimization including: receiving initial colormap and two-dimensional scalar field input data; calculating key colors in the initial colormap, and setting the key colors as control points; calculating a linear interpolation between pairwise control points using a piecewise linear function, generating and mapping a colormap to the two-dimensional scalar field data; establishing an energy optimization equation for control point coordinate positions and the mapped two-dimensional scalar field data, where the coordinate positions are numerical values between 0 and 1 obtained by normalizing index values in the colormap corresponding to the control points; and solving the energy optimization equation to obtain a control point coordinate position, generating a new colormap using the piecewise linear function and optimized control point coordinate position, and mapping the new colormap to the two-dimensional scalar field data, to o

Abstract: Disclosed are a compound impact-resistant device and an application thereof. The compound impact-resistant device includes an inner cylinder, a first pressure sensor and an outer cylinder; an inner cavity of the inner cylinder is connected to a magnetorheological damper, a spiral valve element, a floating piston and a spring from bottom to top; and the outer cylinder is connected to a piston rod, a bottom end of the piston rod penetrates a top of the inner cylinder, the spring and the floating piston to be connected to the spiral valve element, and a portion below the spiral valve element is filled with hydraulic oil. The compound impact-resistant device can provide specific initial support force and achieve active self-adaptation to dynamic impact, thus solving the problems that traditional hydraulic buffers cannot provide initial support force and traditional mechanical crushing members have difficulty in providing large support force.