Abstract: A method and a system for reoptimizing unmanned aerial vehicle formation communication topology based on minimum cost arborescence are used for optimizing reconstructed UAV formation communication topology after a communication failure occurs on the UAVs in the formation. The method includes calculating a first communication cost of the reconstructed UAV formation communication topology; comparing the first communication cost with a target communication cost for the minimum cost arborescence of the formation communication diagram under a predetermined state; when the first communication cost is greater than the target communication cost for the minimum cost arborescence of the formation communication diagram under the predetermined state, optimizing the reconstructed UAV formation communication topology through a predetermined strategy.

Abstract: A combined rope-rod-driven parallel palletizing robot, comprises a chassis, wherein, a base driving mechanism is arranged on the chassis, a torque transfer mechanism is mounted on the base driving mechanism, a top gearbox is mounted on the top of the torque transfer mechanism, a gib arm is movably connected to the top gearbox, and a mechanical arm end tool is arranged on the movable end of the gib arm to operate a work object; the robot further comprises three steel wire rope drivers and three corresponding steel wire ropes, the three steel wire rope drivers are located on the chassis and evenly distributed around the base driving mechanism. In the present invention, the top gearbox and the torque transfer mechanism are driven by a rope to execute two-freedom spatial movement, so as to do palletizing work in a bigger work space.

Abstract: The present invention provides a program counter compression method and a hardware circuit thereof. The compression method of the present invention includes the following steps: step (1), acquiring execution condition of instructions sent by a processor and classifying and screening said instructions based on said execution condition of the instructions; step (2), executing differential operation on instruction count values of the objective classification and the stall periods based on the classifying and screening result and splicing the obtained differential values; step (3), dictionary encoding the valid differential slicing data segments recorded in step (2). The present invention effectively combines the architecture compression and non-architecture compression and proposes a three-stage compression scheme by organizing and applying classifying and screening, differential encoding and dictionary compression, which drastically increases the compression ratio of the program counter.

Abstract: A fabrication and monitoring device for micro probe ball tips includes a magnetic field generator, a 3-dimensional displacement adjusting mechanism, a wire supplier and an image monitoring system. The magnetic field generator includes a U-shaped electromagnet. The 3-dimensional displacement adjusting mechanism includes a 2-dimensional moving platform, a 1-dimensional moving platform, a guiding tube, and a sparking plug. The wire supplier includes a transmission wheel, a pressing roller, a wire feeding roller and a tungsten wire material supplier. The image monitoring system includes a micro objective, a third-generation infinite beam structure lens and a supporting frame. The present invention overcomes an eccentric problem of a tungsten ball and a tungsten rod, and also overcomes a sphericity problem caused by gravity, so as to improve sphericity, eccentric accuracy and enable monitoring of dynamic manufacturing process of the probe ball tips.

Abstract: The present invention relates to a method and a system for compressing data from a smart meter. The method comprises: LZ-encoding electricity load data collected by the smart meter whenever the smart meter collects the electricity load data; storing the LZ-encoded electricity load data in a temporary database through a smart grid communication channel; reading the electricity load data from the temporary database every preset second duration, wherein the read electricity load data is electricity load data stored in the temporary database within the second duration before a corresponding reading time point; and LZ-decoding the read electricity load data, SAX-compressing the LZ-decoded electricity load data, and storing the SAX-compressed electricity load data in a data center. The present invention has high compression rate, reduces the transmission burden for communication lines and storage burden for the data center, and improves the efficiency of smart electricity data analysis and mining.

Abstract: A charge wake-up circuit for a battery management system (“BMS”) for an electric vehicle, the circuit including a charging plug connection circuit, a comparator circuit, and a DC wake-up circuit. The charge wake-up circuit monitors the state of the charger after the BMS turns off. If the charger charges the battery pack after the BMS turns off, the BMS will be started by the charge wake-up circuit and continue to monitor the battery pack. If the charger is off-line, the BMS will maintain the low-power state to prevent the automotive lead-acid battery from over-discharging.

Abstract: The embodiments of the present invention disclose a method and apparatus for joint optimization of multi-UAV task assignment and path planning.

Abstract: A wireless sensor network sensor network charging method for multi-charge nodes, including the following steps: (1) establishing a WSNs model; (2) dividing field ranges of charging trolleys; and (3) charging the charging trolleys: (a) initializing: l=0 and j=0, wherein l is the total number of received alarm nodes, and j is the serial number of an alarmed node; (b) receiving an alarm signal, updating values of l and j, generating a shortest charging path sl, and computing an energy discriminate vector; (c) if a vector element satisfies Qlj?5% B and j=1, 2, . . .

Abstract: A concrete mixing carrier, comprising a vehicle chassis and a mixing drum provided thereon. A drum housing of the mixing drum is cubic, supported horizontally on the vehicle chassis, and able to form an unloading state where a front portion is higher and a rear portion is lower; the mixing drum forms a closed drum housing; a feed inlet and a discharge outlet are respectively provided on a rear end plate; a rotary inner drum formed by splicing movable blades is provided in the drum body, and adjacent movable blades have therebetween a movement margin for rotation; each strip-shaped movable blade is supported at both ends by paired rollers respectively; stirring blades overhang towards inside of the drum body, backs of back plates are provided with drive racks, and drive gears, mutually engaged with the drive racks, are provided at corresponding positions of the drum body using a supporting bracket.

Abstract: An ultrasonic gas flow meter based on FPGA and DSP consists of ultrasonic gas transducers and sensor components, transmitting/receiving signal channel switch circuits, a driving signal generation and amplification circuit, an echo signal conditioning and collection circuit, a time sequential controlling and signal processing circuit, a man-machine interface, a serial communication module and a power management module, propagation time of ultrasonic echo waves is calculated by adopting a variable ratio threshold and zero-crossing detection method of tracking maximum peak of the echo signal to obtain gas flow rates.

Abstract: A medical apparatus for standing aid comprising a backrest (4) that has at least one side thereof provided with a crank rocker mechanism that comprises a crank mechanism (1), a triangular linkage mechanism (2), and a rocker mechanism (3), the crank mechanism (1) being rotatably connected to the triangular linkage mechanism (2) such that an included angle between a second driven link (BE) of the triangular linkage mechanism (2) and the crank mechanism (1) is always smaller than 90°, and the crank mechanism (1) driving the triangular linkage mechanism (2), the rocker mechanism (3) and the backrest (4) connected to the triangular linkage mechanism (2) to perform interactive movement repeatedly along a predetermined curve trajectory in response to a driving force coming from a drive effect of a driving unit (100), so that the backrest (4) connected to the second driven link (BE) assists a trainee in standing up repeatedly by obliquely supporting the trainee's waist.

Abstract: A unidirectionally bendable transmission chain. At a first side thereof, an inner stop plate is fixed between a pair of inner chain plates at both ends of pin shafts, and an outer stop plate is fixed between a pair of outer chain plates at both ends of the pin shafts. Both ends of the inner stop plate are flush with axes of pin holes provided at both ends of the inner chain plates, and both ends of the outer stop plate are respectively provided with extensions beyond the outer chain plates; the extensions of the outer stop plate form a one-sided support for the inner stop plate to prevent the transmission chain from bending toward the first side, thus the transmission chain bends unidirectionally toward a second side opposite to the first side. A hoisting mechanism and a liftable roadblock having the above transmission chain.

Abstract: A micro inchworm-type piezoelectric-driven rotating joint mechanism includes a U-shaped base, bearing pedestals, bearing brackets, bearing rings, piezoelectric ceramic plates, a rotating shaft, a rotating sleeve and end caps. Every bearing ring is divided into two half-rings which are coupled to the bearing pedestals via two bearing brackets. One end of every piezoelectric ceramic plate is fixed to one bearing pedestal, and the other end thereof is coupled to one bearing ring, so that every piezoelectric ceramic plate stretches and deforms under the driving of voltage for driving the bearing ring to achieve micro motions. Two bearing driving modules are respectively symmetrically mounted at two sides of the U-shaped base, and the rotating shaft is supported on the two bearing rings, so that the stepping motion of the rotating shaft is implemented by controlling the timing sequence of clamping, release and rotation of the two bearing driving modules.

Abstract: An analog circuit fault diagnosis method using a single testable node comprises the following steps: (1) obtaining prior sample data vectors under each fault mode; (2) computing a statistical average of the prior sample data vectors under each of the fault modes; (3) decomposing a signal by an orthogonal Haar wavelet filter set; (4) extracting the feature factor of the prior sample fault modes; (5) extracting a fault-mode-to-be-tested feature factor; (6) computing a correlation coefficient matrix and correlation metric parameters between the feature factor of the prior sample fault modes and the feature factor of the fault-mode-to-be-tested; and (7) detennining a fault mode according to a maximal correlation principle by comparing the correlation metric parameters.

Abstract: An analog circuit fault mode classification method comprises the following implementation steps: (1) collecting M groups of voltage signal sample vectors Vij to each of fault modes Fi of the analog circuit by using a data collection board; (2) sequentially extracting fault characteristic vectors VijF of the voltage signal sample vectors Vij by using subspace projection; (3) standardizing the extracted fault characteristic vectors VijF to obtain standardized fault characteristic vectors; (4) constructing a fault mode classifier based on a support vector machine, inputting the standardized fault characteristic vectors, performing learning and training on the classifier, and determining structure parameters of the classifier; and (5) completing determination of fault modes according to fault mode determination rules. The fault mode classifier of the present invention is simple in learning and training and reliable in mode classification accuracy.

Abstract: A medical apparatus for standing aid comprising a backrest (4) that has at least one side thereof provided with a crank rocker mechanism that comprises a crank mechanism (1), a triangular linkage mechanism (2), and a rocker mechanism (3), the crank mechanism (1) being rotatably connected to the triangular linkage mechanism (2) such that an included angle between a second driven link (BE) of the triangular linkage mechanism (2) and the crank mechanism (1) is always smaller than 90°, and the crank mechanism (1) driving the triangular linkage mechanism (2), the rocker mechanism (3) and the backrest (4) connected to the triangular linkage mechanism (2) to perform interactive movement repeatedly along a predetermined curve trajectory in response to a driving force coming from a drive effect of a driving unit (100), so that the backrest (4) connected to the second driven link (BE) assists a trainee in standing up repeatedly by obliquely supporting the trainee's waist.

Abstract: A wireless sensor network sensor network charging method for multi-charge nodes, including the following steps: (1) establishing a WSNs model; (2) dividing field ranges of charging trolleys; and (3) charging the charging trolleys: (a) initializing: l=0 and j=0, wherein l is the total number of received alarm nodes, and j is the serial number of an alarmed node; (b) receiving an alarm signal, updating values of l and j, generating a shortest charging path sl, and computing an energy discriminate vector; (c) if a vector element satisfies Qlj?5% B and j=1, 2, . . .

Abstract: The present disclosure provides a method and system for reconstructing UAV formation communication topology based on minimum cost arborescence, the method comprising: monitoring broadcast communication channel, and judging whether communication failure occurs in UAV in formation; modifying formation communication diagram according to the type of communication failure when communication failure occurs in the UAV; calculating minimum cost arborescence of modified formation communication diagram, and reconstructing UAV formation communication topology according to calculation results.

Abstract: Provided is a concrete mixing carrier, comprising a vehicle chassis and a mixing drum provided thereon. A drum housing of the mixing drum is cubic, supported horizontally on the vehicle chassis, and able to form an unloading state where a front portion is higher and a rear portion is lower; the mixing drum forms a closed drum housing; a feed inlet and a discharge outlet are respectively provided on a rear end plate; a rotary inner drum formed by splicing movable blades is provided in the drum body, and adjacent movable blades have there between a movement margin for rotation; each strip-shaped movable blade is supported at both ends by paired rollers respectively; stirring blades overhang towards inside of the drum body, backs are provided with drive racks, and drive gears, mutually engaged with the drive racks, are provided at corresponding positions of the drum body using a supporting bracket.

Abstract: A unidirectionally bendable transmission chain is provided. At a first side thereof, an inner stop plate is fixed between a pair of inner chain plates at both ends of pin shafts, and an outer stop plate is fixed between a pair of outer chain plates at both ends of the pin shafts. Both ends of the inner stop plate are flush with axes of pin holes provided at both ends of the inner chain plates, and both ends of the outer stop plate are respectively provided with extensions beyond the outer chain plates; the extensions of the outer stop plate form a one-sided support for the inner stop plate to prevent the transmission chain from bending toward the first side, thus the transmission chain bends unidirectionally toward a second side opposite to the first side. A hoisting mechanism and a liftable roadblock having the above transmission chain are further provided.