18results about How to "Avoid frequent switching" patented technology

The utility model relates to visual calibration target device technical field, specifically disclose a kind of visual calibration target device of steel trestle dynamic displacement monitoring, including target mechanism, the upper end side of the target mechanism is provided with wire arrangement mechanism, the front lower end of the target mechanism is provided with auxiliary flickering mechanism;The target mechanism includes mounting plate, suspension pole, target main body, wiring seat, lamp holder, outer ring reference lamp bead, intermediate layer reference lamp bead and inner ring reference lamp bead.This scheme can adapt to different monitoring distance and camera focal length by the reference lamp bead design of multiple circle layer distribution, ensure target quick identification and stable tracking by outer ring double-layer concentric circle lamp bead under long-distance large visual angle, provide high-precision positioning by intermediate layer polygon lamp bead in medium distance, and rely on snowflake inner ring lamp bead to realize ultimate calibration in nearest distance, only single target can cover the full-scale monitoring requirement from bridge overall shaking to local slight deformation.

The utility model relates to the technical field of teaching equipment, and specifically discloses a single-person command and training device for virtual-reality combined emergency drills, which includes: a table body, a first display screen component and a second display screen component; a VR device cabin and a mainframe cabin are detachably arranged on the table body; the VR device cabin is used to accommodate the VR device; the mainframe cabin is used to accommodate the mainframe; the first display screen component and the second display screen component are both installed on the tabletop of the table body, and the included angle between the display end faces of the first display screen component and the second display screen component is 90 degrees to 180 degrees; the first display screen component is used to store training materials and perform screen sharing with multiple student terminals; the second display screen component is wirelessly connected to multiple VR devices, and is used to issue VR tasks to each VR device and receive the training data returned by each VR device. The utility model can not only improve the training efficiency of the device, but also improve the layout rationality of each accessory.

The invention relates to an unmanned logistics vehicle steering control method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring state information and environment information of a vehicle; respective steering cost of various preset steering modes is calculated according to the state information and the environment information, wherein the various preset steering modes comprise Ackerman steering, front and back double-steering and bidirectional driving; the steering mode of the current vehicle is obtained, if the steering mode with the minimum steering cost is different from the current steering mode and the cost difference between the steering mode with the minimum steering cost and the current steering mode is larger than a preset switching threshold value, the steering mode is determined as a target steering mode, and otherwise, the current steering mode is maintained; and controlling the vehicle to run in the target steering mode. By the adoption of the method, the unmanned logistics vehicle can autonomously select the optimal steering mode, frequent mode switching is avoided, and the driving efficiency and smoothness in different scenes are improved.

The application relates to the technical field of body sense interaction and virtual character control, and discloses a surfboard body sense input and character linkage system, which comprises a board body, a tension detection unit, a posture detection unit and a central processing unit. The system collects cable tension through the tension detection unit, collects an original pitch angle and a roll angle through the posture detection unit, and a decoupling module is built in the central processing unit. A mechanical coupling pitch angle is calculated according to the cable tension and a preset mechanical coupling coefficient, the original pitch angle is subtracted by the coupling pitch angle to obtain a net pitch angle, so that the physical torque interference is eliminated and a speed instruction is generated. Meanwhile, the system dynamically adjusts a roll dead zone threshold according to the tension intensity by using a dead zone module, and identifies a drift state based on a motion time window and a multi-dimensional parameter threshold through a judgment module. The application effectively solves the interference problem of the cable tension on posture recognition, and realizes accurate judgment and stable control of complex combined actions.

The present application belongs to the field of vehicle-mounted millimeter wave radar data processing, and particularly relates to a fence identification method, system and electronic device. The fence identification method comprises: obtaining a radar view of a vehicle radar, and the radar view comprising a plurality of point clouds; establishing a coordinate system for the radar view with the vehicle radar as the origin and the vehicle head direction as the positive direction of the longitudinal coordinate; dividing the coordinate system into a plurality of unit intervals along the transverse coordinate axis direction, and any unit interval being partially overlapped with its adjacent unit interval; screening out a candidate fence according to the number of point clouds falling into the unit interval; and identifying a target fence from the candidate fence through the transverse coordinates of the point clouds. The fence identification method of the present application can identify the target fence without complex traversal and repeated calculation, and has high reliability.

The utility model discloses a kind of cyclic waste heat recovery equipment, including air compressor and heat recovery unit, the side of air compressor is equipped with oil circuit pipeline, a plurality of first gate valves are installed on oil circuit pipeline, one end of oil circuit pipeline is connected with heat recovery unit;The utility model is equipped with heat recovery unit and so on by setting oil circuit pipeline, the heat in the oil circuit pipeline in air compressor will be transferred to heat recovery unit by oil circuit pipeline, cold water in heat preservation water tank is discharged to heat recovery unit by first connecting pipe and carries out heat exchange, high-temperature oil in oil circuit pipeline is cooled, while the water after temperature rise is backflowed to heat preservation water tank by first connecting pipe, discharge through second connecting pipe for subsequent use, the temperature and position of water are detected by temperature sensor and liquid level sensor on the top of heat preservation water tank, signal is transmitted to electric three-way switch valve on tap water connecting pipe, whether water is needed is judged, and energy consumption is reduced by making full use of heat.

The present application relates to the technical field of power system control, in particular to a photovoltaic energy storage control method and system based on an MPPT controller, comprising: determining the energy loss of battery energy storage control at the i-th moment according to the fluctuation of battery charge and discharge power at the i-th moment and the change of energy conversion efficiency of battery energy storage control in a preset time period; determining the coupling parameter according to the energy loss of battery energy storage control at the i-th moment and the battery energy storage control deviation coefficient; determining the stable term of battery energy storage control at the i-th moment according to the difference between the energy loss of battery energy storage control at the i-th moment and the average energy loss and the coupling parameter; optimizing the battery energy storage control objective function according to the stable term of battery energy storage control at the i-th moment to obtain the optimized battery energy storage control objective function; the present application can improve the utilization efficiency of photovoltaic power generation.

The application belongs to the field of intelligent water conservancy and measurement technology, and provides a double-frequency adaptive ultrasonic time difference method open channel flow measurement method and system. Among them, the left bank high-frequency ultrasonic probe and the left bank low-frequency ultrasonic probe are arranged on the left bank of the open channel, and the right bank high-frequency ultrasonic probe and the right bank low-frequency ultrasonic probe are arranged on the right bank of the open channel; and the line between the left bank high-frequency ultrasonic probe and the right bank high-frequency ultrasonic probe is parallel to the line between the left bank low-frequency ultrasonic probe and the right bank low-frequency ultrasonic probe. When measuring, the characteristics of high-frequency ultrasonic and low-frequency ultrasonic are comprehensively utilized to solve the problems of high-precision flow measurement, complex scene flow measurement with high sediment and large flow rate, and the problem of insufficient applicability of traditional single-frequency ultrasonic time difference method flow measurement in all scenes. In the application, the signal quality comprehensive score is compared with the low-frequency switching threshold and the high-frequency recovery threshold when selecting the ultrasonic probe, the frequent switching of high-frequency ultrasonic and low-frequency ultrasonic is avoided, and the reliability of the ultrasonic time difference method open channel flow measurement is improved.

The application discloses a kind of uncertainty field environment under multi-space-ground robot cooperative search method, it is related to multi-agent cooperative search technical field.The method includes: grid field task area, define space-ground robot state;Based on large language model, initialize the search value of task area cell;Design the total cost of cooperative search path planning including path cost and mode switching cost;Introduce communication distance constraint, adopt path decision method based on predictive control, select the minimum path point motion of cost, and dynamically update search value to carry out rolling optimization.The present application reduces invalid search area using large language model, improves search efficiency;Mode switching cost and different mode energy consumption are included in planning, avoid frequent switching and excessive dependence on high energy consumption mode, improve endurance.The present application is suitable for heterogeneous or homogeneous multi-agent system, significantly improves the practicability and efficiency of multi-space-ground robot cooperative search.

The application provides a communication and power distribution collaborative low-interaction compression networking and partitioning method, device and medium, and belongs to the technical field of power system optimization. The method comprises the following steps: acquiring basic data of a coupled system; constructing a power distribution network physical layer complex network model based on power distribution network physical node data, and constructing a communication layer complex network model based on communication node data and a cross-domain mapping matrix; partitioning the coupled system based on the power distribution network physical layer complex network model and the communication layer complex network model to obtain an initial partition; when a dynamic disturbance occurs in the coupled system, a random stable game method is used to generate a candidate partition strategy for each partition, and based on the candidate partition strategy and the initial partition, an intermediate partition scheme is obtained; the intermediate partition scheme is verified to obtain a final partition; by using the random stable game method to generate a candidate partition strategy for each partition, the stability strategy optimization can be carried out based on the partition utility when the dynamic disturbance occurs in the coupled system.

The present disclosure relates to an intelligent light switching method, device, equipment, storage medium and vehicle. In the embodiment of the present disclosure, a current frame image in the driving direction of the vehicle is acquired; a first target light source contained in a previous frame image of the current frame image is determined as a first tracking light source; light source identification is performed on the current frame image to obtain a target light source contained in the current frame image, and the target light source contained in the current frame image is determined as a second target light source; the second target light source contained in the current frame image is matched with the first tracking light source to obtain a matching result; and based on the matching result, it is determined whether high / low beam switching is needed. The light source state of the light around the vehicle can be tracked when the vehicle is driving at night, so that the target light source identified based on the current frame image is consistent with the actual situation, the frequent switching of the high / low beam of the vehicle is avoided, and the stability of the high / low beam switching and the convenience and safety of the user driving are improved.

This application discloses a digital human voice interaction method and system, relating to the field of speech synthesis and recognition technology. The method includes: acquiring raw speech, network latency, and computing power status, and aligning them to obtain the terminal status; extracting energy and silence intervals to generate pause boundary sequences, speech segment tables, and target rhythm sequences; determining the recognition mode to obtain a standardized text stream; generating a response text segment table and a raw audio segment table; obtaining a continuous audio stream through time scaling, timbre baseline extraction, and envelope adjustment; and generating lip-sync rhythm sequences and facial expression preservation sequences accordingly. This application improves the rendering consistency and continuity of cross-terminal voice interaction for two-dimensional digital humans.

The application discloses a kind of dual-axis solar wing control method and device giving consideration to flexibility inhibition, belong to spacecraft control technical field.Method includes: according to the unit vector of sun in satellite orbit system, the nominal angle of A axis and B axis is calculated respectively;Wherein, the nominal angle of B axis is after discretization processing and according to the flexible vibration inhibition interval determined;The flexible vibration inhibition interval is the angle avoidance interval set to avoid resonance frequency;According to the nominal angle and the rotation angle measurement value of A axis and B axis, the control error of A axis and B axis is calculated;According to satellite imaging state and the state of dual-axis solar wing, the rotation of A axis and B axis is controlled using control error, to eliminate the sun error of dual-axis solar wing.The application can avoid the resonance interval of driving frequency and axial vibration frequency, reduce resonance risk.

This invention relates to the field of thermal energy storage technology, and more particularly to a dynamic thermal energy storage and heating regulation system and method based on energy efficiency optimization. This invention collaboratively models multiple parameters such as server load rate, cooling water return temperature, and heating-side supply and return water temperatures to convert instantaneous surplus heat into dispatchable thermal storage. By releasing the stored heat and adjusting the proportion of auxiliary heat sources, the temperature difference between the heating-side supply and return water is stabilized within the target range, avoiding room temperature deviations and energy efficiency deterioration caused by heat source fluctuations. Simultaneously, closed-loop corrections of the charging and releasing heat power, heating demand range, and index weights allow the system to gradually approach the balance point of minimum energy consumption and optimal thermal comfort during long-term operation. This significantly improves waste heat utilization and reduces unit heating energy consumption while ensuring the thermal comfort of the building complex, effectively solving the problems of insufficient heating stability and low waste heat utilization efficiency caused by asynchronous heating regulation and waste heat recovery responses.

The utility model discloses a kind of vehicle-mounted equipment power supply low-voltage protection and spare battery switching control circuit, including first power conversion circuit, second power conversion circuit, hysteresis comparator circuit and spare battery switch circuit.First power conversion circuit is filtered to vehicle-mounted power supply, DC-DC conversion is carried out, and multiple protection circuits are set;Second power conversion circuit reduces voltage output stable voltage to vehicle-mounted power supply;Hysteresis comparator circuit real-time monitoring vehicle-mounted power supply voltage;Spare battery switch circuit switches to spare battery power supply when low voltage.It can real-time monitoring vehicle-mounted power supply voltage, when voltage is lower than set threshold, cut off vehicle-mounted power supply and rear-end equipment connection, prevent automobile battery overdischarge, while automatically switched to spare battery power supply, guarantee vehicle-mounted equipment continuous operation.In addition, through hysteresis voltage comparator design, avoid circuit frequently switching, improve system stability and reliability, ensure the continuity of automobile intelligent function.

This utility model discloses an electromagnetic lifting device with a telescopic mechanism for front-end lifting, comprising a frame beam, the lower end of which is connected to a telescopic mechanism. The telescopic mechanism includes a main beam, with a telescopic secondary beam inserted into each end of the main beam. A rack is fixedly connected to the middle of the upper surface of each secondary beam. A power unit is bolted to the mounting plate of the main beam. The power unit includes a motor and a reducer. The output shaft of the motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the gear via a key. The gear meshes with the rack. Hook plates are fixedly connected to both sides of the main beam and the outer ends of the secondary beams. Electromagnets are hooked to the hook plates via chains. This application can solve the problems of frequent lifting device switching, complex operation procedures, low work efficiency, and high equipment procurement and maintenance costs in the handling of steel plates and profiles with large length variations in existing electromagnetic lifting devices.