12results about How to "Helps with security" patented technology

The invention relates to the technical field of automobile steer-by-wire, in particular to a control method of a steer-by-wire actuator system, which comprises the following steps that: double systems of a steer-by-wire actuator respectively execute the following steps: identifying whether manual driving exists or not by analyzing the hand power condition of a driver; and identifying whether automatic driving exists or not through the enabling situation of the automatic driving request signal; whether the whole vehicle environment supports driving steering or not is judged by analyzing the validity data of the whole vehicle signal; carrying out exchange synchronization on the manual driving identification result, the automatic driving identification result and the validity data of the whole vehicle signal through dual-system communication to obtain synchronous data; confirming a current whole vehicle driving mode according to the synchronous data; according to the steering-by-wire actuator system, the accuracy and the safety of whole vehicle signal recognition are improved through exchange redundancy recognition of received signals by the steering-by-wire actuator dual system, and the redundancy and the safety of the steering-by-wire actuator system body and driving mode recognition control are improved through exchange redundancy judgment of fault information.

The utility model discloses an adjustable engineering cost budgeting workbench which comprises a base, a telescopic sleeve is fixedly installed in the middle of the top of the base, the top of the telescopic sleeve is in sliding connection with a telescopic rod, the lower end of the telescopic rod penetrates and extends into the telescopic sleeve, and the top of the telescopic rod is rotationally connected with a workbench body. The threaded rod is rotationally connected to the inner bottom of the base, the upper end of the threaded rod penetrates and extends into the telescopic rod, and the end, relative to the interior of the telescopic rod, of the threaded rod is sleeved with an inner threaded sleeve block. According to the adjustable engineering cost budgeting workbench, a bevel gear at the output end of a motor is meshed with a bevel gear on a rod body of a threaded rod, then the motor drives the threaded rod to rotate, and due to the fact that the threaded rod is connected with an inner threaded sleeve block through threads, a telescopic rod slides in a telescopic sleeve; and meanwhile, the connecting plate is driven to slide in the supporting plate, and then the telescopic rod is driven to drive the workbench to adjust the height.

The present invention provides an active balancing system and method for BMS, wherein the balancing system part includes a main control chip, a power module, a BUCK-BOOST circuit, a current detection circuit and a matrix switch; the BUCK-BOOST circuit is used to store and transfer energy, and transfer a part of the total energy of the battery pack to the single battery cell with the lowest energy; the current detection circuit is used to detect the circuit current during balancing, and adjust the duty cycle of PWM in real time according to the current size to realize the constant current function during the balancing process; the matrix switch is used to realize the opening and closing of the battery cell balancing; the main control chip is used to generate a PWM signal for controlling the BUCK-BOOST circuit and a control signal of the matrix switch, and receive a signal from the current detection circuit. At the same time, a corresponding active balancing method is provided, and the balancing strategy of the present invention combines multiple advantages such as high efficiency, low cost, and safety, and is an innovative technology with practical application prospects.

The utility model discloses a visual doorbell, relates to the technical field of doorbells, and aims to solve the problems that in the prior art, when a user goes out and is not at home, the user cannot know a visitor or communicate with the visitor, and the practicability is poor. The modeling edge strip is fixedly arranged on the outer side of the doorbell shell; the camera is fixedly mounted on one side of the upper end in the doorbell shell; a doorbell voice module is fixedly mounted in the doorbell shell along one side of the camera, and a through hole is formed in the upper end surface of the doorbell shell along the upper part of the doorbell voice module; the doorbell processor module is fixedly arranged below the doorbell voice module, the doorbell processor module is fixedly connected with the doorbell shell through screws, the input end of the doorbell processor module is connected with the output end of the camera, and the doorbell processor module is in bidirectional connection with the doorbell voice module. The doorbell processor module is in bidirectional connection with the wireless transmission module, and the wireless transmission module is in bidirectional connection with the user terminal.

The utility model relates to the field of industrial smelting, and discloses a stokehole transfer trolley for receiving molten iron, which can realize more flexible mobility in a complex factory layout, and also has the capability of adjusting in horizontal and vertical directions, so that the molten iron can be treated more safely and more efficiently. The stokehole transfer trolley comprises a first moving mechanism, a second moving mechanism, a roller transmission mechanism and a ladle. The first moving mechanism is arranged at the bottom of the stokehole transfer trolley and is configured to enable the stokehole transfer trolley to move in the x direction. The second moving mechanism is arranged above the first moving mechanism, the roller transmission mechanism is arranged above the second moving mechanism, the second moving mechanism is configured to move and drive the roller transmission mechanism to translate in the y direction, and the ladle is placed on the roller transmission mechanism; the roller transmission mechanism is configured to drive the roller to rotate so that the ladle can advance or retreat on the roller transmission mechanism.

The present invention relates to the field of intelligent data collection technology, and in particular to a data collection method and system based on Internet takeaway information. The method comprises the following steps: obtaining takeaway platform information data; semantically standardizing the takeaway platform information data to generate a semantically normalized data set of takeaway information; associating the semantically normalized data set of takeaway information with geographic data, thereby generating geographic location associated data of takeaway information; using the geographic location associated data of takeaway information to perform entity relationship mapping on the semantically normalized data set of takeaway information to generate an entity relationship mapping graph of takeaway information; calculating the relevance of takeaway information on the entity relationship mapping graph of takeaway information to obtain a relevance coefficient of takeaway information. The present invention improves the efficiency and quality of takeaway information data collection by performing semantic standardization, geographic association, intelligent reasoning and data storage optimization on the data collected from takeaway information.

The invention provides a short-process low-cost preparation method for a 300M steel undercarriage sleeve forging, and belongs to the technical field of forging and pressing. According to the short-process low-cost preparation method for the 300M steel undercarriage sleeve forging, the problems of large material consumption, long process flow and the like in a traditional production process are solved, the urgent requirements of advanced aircrafts on the aspects of product quality, manufacturing cost and the like can be met, and the method has great economic and social benefits. According to the method, single-heating-number one-forging forming is adopted, the sleeve forge piece with an inner hole with a certain depth can be obtained, the machining allowance is small, the material utilization rate is high, the cost is low, and the production efficiency is high; according to the method, flash-free forging is achieved, the risk that a cross section grain streamline of the sleeve forge piece is cut off and exposed is avoided, the stress corrosion resistance and the fatigue resistance of parts are improved, and the service requirements of airplanes for the safety and the reliability of key parts are met.

The utility model relates to milling machine tool technical field especially, it relates to a kind of end face milling machine tool clamping platform. Including: rack, the rack is "L" shape, the long arm end of the rack is equipped with lifting mechanism, the side of the lifting mechanism is equipped with processing head, the short arm end of the rack is equipped with transmission mechanism, the upper surface of the transmission mechanism is fixedly connected with workbench, the side of the workbench is equipped with clamping device, the clamping device includes several weld plates, the side of the weld plate is fixedly connected with the side of workbench, every two weld plates are rotatably connected with screw rod on the side close to each other, the arc surface of the screw rod is fixedly connected with pulley, the arc surface of the pulley is driven connected with belt.The utility model provides a kind of end face milling machine tool clamping platform has the advantage that different sizes of workpiece are clamped conveniently, and the machining precision of workpiece and milling machine tool processing efficiency are improved.

The present invention belongs to the technical field of ion compressors, and in particular, relates to a gas-liquid two-phase visualization test system, a safe operation method, and a data processing method. A gas-liquid two-phase visualization test system includes an intake module, a cylinder simulation module, and an exhaust module connected in series in sequence. The cylinder simulation module includes two or more stages of visual piston units connected in series, and an interstage buffer for temporarily storing test gas is also provided on the pipeline between adjacent visual piston containers; a limit device is provided outside the straight pipeline directly connected to the visual piston container; the intake module generates test gas, and the test gas flows through the visual piston units connected in series in the cylinder simulation module in sequence, and the visual piston container in the visual piston unit performs a piston reciprocating motion to compress the test gas and then send it to the exhaust module, and the exhaust module discharges the compressed gas into the surrounding environment. The present invention can simulate and observe the complex gas-liquid flow field in the cylinder of the ion compressor in a realistic, efficient and safe manner.

The utility model discloses a patient transfer trolley with assistance, and relates to the technical field of transfer devices, the patient transfer trolley comprises a bed body and a fixing frame, the bottom of the fixing frame is provided with a rear wheel drive, the rear wheel drive comprises two groups of first fixing seats, two groups of first wheels, a connecting rod and a motor, the bottoms of the first fixing seats are rotatably connected with a first connecting shell, and the first connecting shell is connected with a second connecting shell. A first gear is fixedly installed on the outer wall of the connecting rod, and the outer wall of the first gear is engaged with a second gear. By arranging the motor, the second gear, the first gear and the connecting rod, the motor is started to drive the second gear and the first gear to rotate, then the first gear drives the connecting rod and the two sets of first wheels to rotate, the first wheels are located at the positions, on one side of the feet of a patient, of the bed body, medical workers are helped to push the bed body through operation of the motor, and the transfer efficiency is improved; the labor intensity of medical staff is reduced, and the transfer time is shortened.

The present invention belongs to the technical field of ion compressors, and in particular, relates to a gas-liquid two-phase visualization test system, a test method, and a data processing method. A gas-liquid two-phase visualization test system includes an air intake module, a cylinder simulation module, and an air outlet module connected in series in sequence. The cylinder simulation module is transparent and has a test liquid built in. The air intake module generates a test gas, and the test gas enters the cylinder simulation module. The piston in the cylinder simulation module reciprocates to compress the test gas and then sends it to the air outlet module, and the air outlet module discharges the compressed gas into the surrounding environment. The gas-liquid two-phase visualization test system of the present invention can realistically and efficiently simulate the complex gas-liquid flow field in the cylinder of the ion compressor and perform observation and analysis, which helps the research and development of ion compressors and ionic liquids.

This invention relates to the field of unmanned aerial vehicle (UAV) control technology, specifically to a dynamic obstacle avoidance method for UAVs based on multi-sensor fusion. The method includes receiving image sequences, depth point clouds, pose parameters, and flight velocity parameters; calculating illumination distortion gradient values ​​and speckle noise entropy values ​​based on the image sequences and depth point clouds; performing coordinate registration and feature extraction on the image sequences, depth point clouds, and pose parameters to output visual and radar feature sets; generating weighted visual and radar feature sets through a weight adjustment function, and generating a joint heterogeneous feature tensor through alignment and concatenation; and generating airframe attitude and thrust control commands by applying the joint heterogeneous feature tensor to a probabilistic prediction model and a model predictive control algorithm. This invention avoids error accumulation and decision delays caused by multi-level serial computations through cross-domain reuse and deep coupling of airframe physical parameters in the data stream, thus improving the global executability of obstacle avoidance tasks.