57results about How to "Avoid distractions" patented technology

The invention belongs to the technical field of power grid grounding fault positioning, and discloses a power distribution network overhead line single-phase grounding fault positioning method and a power distribution network overhead line single-phase grounding fault positioning system. Collecting an electric field signal and a magnetic field signal on the detected overhead line to calculate a voltage instantaneous value, a current instantaneous value and respective full-cycle Fourier amplitude; integrating the product of the voltage instantaneous value and the current instantaneous value in one period, dividing the integral value by the product of the full-cycle Fourier amplitude of the voltage instantaneous value and the current instantaneous value to obtain a ratio coefficient at different positions on the detected overhead line, so as to construct a function of the ratio coefficient with respect to the different positions on the detected overhead line; a single-phase earth fault occurs at the maximum value point of the first derivative of the function. Reverse power transmission is carried out on the basis that a vehicle-mounted power supply is combined with a distribution transformer, the amplitude of an injection signal is enhanced, rapid and accurate positioning of a single-phase earth fault point of the power distribution network is achieved in cooperation with an electric field and magnetic field sensor carried by the unmanned aerial vehicle, and the reliability of power supply is improved.

The invention discloses a part packaging device and part packaging equipment. The part packaging device comprises a base plate, the base plate is provided with a bottom bearing cavity and a bottom containing cavity which are communicated with each other, and the bottom bearing cavity is formed by at least part of the top of the bottom containing cavity through radial expansion; the bottom face of the bottom bearing cavity is connected with the wall face of the bottom containing cavity and extends in the radial direction towards the outside of the bottom containing cavity, and the bottom face of the bottom bearing cavity is used for bearing parts. The side, away from the bottom bearing cavity, of the bottom containing cavity expands in the radial direction to form an avoiding cavity. And the top cover is used for covering the part placed in the chassis, and the top cover is provided with a top containing cavity for containing the top of the part. The parts are transported and stored safely, the quality is guaranteed, and the part packaging device is not prone to being abraded, so that the part packaging device can be recycled.

The utility model belongs to the technical field of power battery trays, and particularly relates to a power battery aluminum tray which comprises a tray and a battery jar, a protection mechanism is arranged at the bottom of the tray, and a connecting mechanism connected with the protection mechanism is arranged in the tray and at the bottom of the tray. The first buffer pad of the protection mechanism has excellent electromagnetic shielding performance, so that the interference of electromagnetic waves can be effectively prevented, the stability of the whole power battery system is improved, the impact of broken stones can be effectively relieved when a vehicle runs through the energy absorption capability of the metal base plate, and the safety of the vehicle is improved by matching with the arrangement of the second buffer pad. A good buffering and fixing layer is formed at the bottom of the first buffering pad, so that the protection performance of the bottom of the tray is further improved, and the phenomenon that the chassis often collides with hard objects such as gravels on the road surface in the long-term running process of the new energy automobile is avoided; the broken stones are directly contacted with the tray 1 and are deformed or damaged, so that the protection performance of the power battery is reduced.

The invention discloses an intelligent following anti-falling device suitable for power transmission tower maintenance and a using method. The intelligent following anti-falling device comprises a motor driving part, a guide rail sliding block part, a differential mechanism and a sensor part. The invention has the following beneficial effects: an electric power overhaul worker does not need to continuously drag and move the safety rope fixing bayonet, and can automatically adjust whether to open the one-way self-locking function of the guide rail slide block according to the specific working state during overhaul; in addition, the limitation of the position of the self-locking device and the length of the safety rope on the activity space range of the electric power overhaul worker in high-altitude overhaul is further reduced, and the overhaul activity space is further expanded; in addition, the intelligent following anti-falling device effectively avoids distraction of the electric power maintainer due to frequent dragging of the safety rope fixing bayonet, and unnecessary physical power consumption of the electric power maintainer is reduced.

The invention relates to the technical field of flow velocity detection, and discloses a flow velocity meter detection device, which comprises a base, a reservoir fixedly mounted on the upper surface of the base, a first water tank fixedly mounted on the upper surface of the base, a second water tank fixedly mounted on the upper surface of the base, and a first water pipe arranged in an inner cavity of the reservoir, according to the invention, the filtering assembly can adopt a simulation scene to detect the flow velocity of water in different water areas, can filter impurities in the water, and can rapidly adjust the height difference of the water level through the partition plate assembly, so that the device is suitable for simulating various scenes, avoids the interference of the external environment on the flow velocity of water flow, enables the detected data to be more accurate, and improves the detection precision. The height of the water level can be rapidly measured through the water level assembly, an alarm can be given out in time when the height of the water level changes, measurement personnel are reminded to conduct correction, and errors of detection data are avoided.

The present application discloses a method for drawing a map road based on vtk and point cloud, which relates to the field of autonomous driving, including: using vtk to obtain point cloud data of a road, and using an octree to perform spatial division on the point cloud data to obtain point cloud data after spatial division; performing coordinate transformation on the point cloud data after spatial division to align the z-axis of the point cloud coordinate system with the z-axis of the camera coordinate system; drawing a road reference line by interactively taking points on the screen according to the point cloud data after coordinate transformation; generating a road boundary and a center line according to the road reference line through geometric transformation; clustering and edge extraction of the point cloud within a preset range of the road boundary by using the DBSCAN algorithm, and smoothing by using a B-spline curve to obtain a final road boundary as a drawn map road; in view of the low efficiency of road drawing in the prior art, the present application improves the drawing efficiency.

The utility model relates to the technical field of medical auxiliary appliance, in particular to a kind of adjusting tracheal puncture device of emergency department, it can make medical staff no longer occupy one hand to lift the mandible of patient, so it will not make medical staff arm feel sore, avoid causing the distraction of medical staff, so that medical staff can wholeheartedly carry out tracheal puncture to patient;Including base and bracket, bracket is set on base, the base includes two groups of movable mat and two groups of fixed plate, the left side of two groups of movable mat is equipped with arc avoiding groove, the right end of two groups of fixed plate is equipped with limit connecting groove, two groups of movable mat are respectively connected with two groups of fixed plate by the cooperation of connecting plate and limit connecting groove, and two groups of movable mat and two groups of fixed plate are mutually symmetrical, the upper and lower ends of movable mat are respectively aligned with the upper and lower ends of fixed plate, the bracket includes arc-shaped supporting plate, for supporting the mandible of patient.

The invention relates to a self-adaptive management method and system for a database plan cache, and the method comprises the steps: firstly judging whether the plan cache is hit or not after a database receives an SQL statement, and triggering a hard analysis generation plan and caching the plan when the plan cache is not hit; if the cache is hit, further judging whether a corresponding multi-execution plan exists or not; and when only a single execution plan exists, analyzing the relationship between the number distribution of execution tuples and the number of execution times by adopting an execution efficiency algorithm to dynamically judge whether the data is inclined. And when a plurality of execution plans exist, entering a multi-plan cache management stage, selecting the execution plans according to a matching result of the current binding variable predicate selection rate and the cache plan historical selection rate, and generating and caching a new plan when the matching fails. According to the method, the data skew is accurately identified by executing the efficiency algorithm, intelligent matching and multiplexing of plans are realized by means of a multi-plan cache management mechanism, and the overall performance of the database in a data skew scene is improved.

The utility model relates to municipal works pipe jacking construction technology field discloses a kind of folding linear pipe jacking line shape measuring devices, including clamping mechanism, folding ruler, adjustable target and the telescopic fixing mechanism for locking the included angle between clamping mechanism and folding ruler;The clamping mechanism is used to clamp the measuring device in the end of pipe wall two sides of construction pipe jacking;Folding ruler one end articulates clamping mechanism;Folding ruler is provided with recess along length direction, and folding ruler is divided into several short rulers, and short ruler is connected with hinge;Laser source and reflector are provided on the adjustable target, and adjustable target is embedded recess to form sliding connection;The telescopic fixing mechanism includes telescopic link and first fixed bolt.The utility model integrates clamping, extension, measurement, target and locking function in one, adapt to the narrow space limit of construction;The short ruler design of folding ruler meets different pipe diameter measurement demand;Telescopic link adjusts included angle, ensures that folding ruler is perpendicular to pipeline axis, reduces inclination error.

The invention relates to the technical field of vehicles, and provides a speed control method, device and equipment for a windscreen wiper and a storage medium, and the method comprises the steps that a first windscreen wiper speed correction value is obtained according to windscreen wiper driving resistance of a previous speed control period and windscreen wiper driving resistance of a current speed control period; according to the rainfall parameter of the previous speed control period and the rainfall parameter of the current speed control period, a second windscreen wiper speed correction value is obtained; according to the first target control speed and the actual control speed of the last control period, a third windscreen wiper speed correction value is obtained; according to the first windscreen wiper speed correction value, the second windscreen wiper speed correction value and the third windscreen wiper speed correction value, the first target control speed of the previous control period is corrected, and the first target control speed of the current control period is obtained; and controlling the speed of the windscreen wiper based on the first target control speed of the current control period. The problem that the visual field is poor due to the fact that rainwater on a windshield cannot be well removed can be solved.

The embodiment of the invention relates to the technical field of vehicles, and discloses a pit identification method and device, and the method comprises the steps: obtaining the vertical speed information of the sprung mass and the vertical speed information of the unsprung mass of each wheel of a vehicle; determining speed characteristic information of each wheel according to the vertical speed information of the sprung mass and the vertical speed information of the unsprung mass of each wheel; and according to the speed characteristic information of each wheel, determining a pit identification result of the vehicle. By applying the technical scheme of the invention, the problem of poor accuracy of pit identification in the prior art can be solved.

The invention provides a method for detecting free PEG in pegylated human erythropoietin, the free PEG is detected through high performance liquid chromatography, the high performance liquid chromatography detection method comprises the following steps: (1) preparing a mobile phase A and a mobile phase B, the mobile phase A is a 0.1% TFA-aqueous solution, and the mobile phase B is a 0.1% TFA-84% acetonitrile solution; (2) setting chromatographic conditions: carrying out gradient elution by using a C4 chromatographic column; the flow velocity of the mobile phase is 0.75-1.0 mL / min; the column temperature is 60-70 DEG C; the temperature of the sample chamber is 2-8 DEG C; and (3) detecting the sample to be detected.

This invention relates to the field of computer vision, specifically to a monitoring method based on cascaded target detection, comprising: acquiring a monitoring screen; recognizing the monitoring screen using a trained first YOLO model and cropping out target region images; recognizing each target region image using a trained second YOLO model and obtaining target information therein; and summarizing the target information to a host computer; the target information includes a region number, and the step of obtaining the region number includes: locating target character information in each target region image using a trained second YOLO model; recognizing the located target character information using OCR technology, and confirming the region number based on the recognition information; the step of summarizing the target information to a host computer includes: when any target region fails to be recognized within a preset time period, summarizing and transmitting the target information corresponding to that target region to the host computer; after successful transmission, restricting other target information carrying the region number of that target region from being uploaded again.

The invention relates to the technical field of air conditioners, and discloses a method for controlling an air conditioner which is installed in a target vehicle. The method comprises the following steps: acquiring first voice data in a target vehicle; analyzing the first voice data to obtain a first analysis result; and according to the first analysis result, the air conditioner is controlled to operate. In this way, when a driver drives the target vehicle, the air conditioner can be controlled to operate in a voice mode. A driver can be prevented from being distracted when driving the vehicle, and the driver can conveniently use the air conditioner additionally arranged in the vehicle. The invention further discloses a device for controlling the air conditioner, the air conditioner and a storage medium.

This invention discloses a differential information forwarding method, comprising the following steps: S1, setting parameters; S2, receiving differential information to be forwarded from a host computer; S3, encoding and transmitting the received differential information according to the set parameters; in step S1, the parameters include channel, transmit power, and modulation mode, wherein the modulation mode includes LoRa mode and GFSK mode; when the modulation mode is LoRa mode, two frequency points are set on each channel, with an interval of at least 55MHz between each frequency point, and a differential information signal is transmitted once at each frequency point, with the two frequency points alternately transmitting data frames; when the modulation mode is GFSK mode, three frequency points are set on each channel, with an interval of at least 55MHz between each frequency point, and a differential information signal is transmitted once at each frequency point; this invention employs a dual-frequency or triple-frequency retransmission mechanism, enabling the receiver to avoid interference points as much as possible in the time and frequency domains, greatly improving the data packet transmission success rate and adapting to complex electromagnetic environments.

The utility model discloses a seismic sensor coupling structure, which comprises a tailstock arranged on the surface of a medium to be coupled and a sensor arranged on the tailstock, three supporting legs are uniformly distributed at the bottom of the tailstock, and the tip of each supporting leg is a linear or arc cutting edge. The three-foot tail cone structure is adopted, the appearance structure of the supporting foot is optimized, and each tail cone is replaced by a locally concentrated short straight line or arc cutting edge, so that the coupling rigidity function of the supporting foot is ensured, and meanwhile, the inadaptability of a single-point supporting foot to local unevenness is overcome.

This invention provides a method and system for priority interception of unmanned aerial vehicles (UAVs) based on a dense optical flow algorithm, relating to the field of UAV interception technology. The method includes: acquiring flight image data of UAVs within an interception area; preprocessing the flight image data to obtain a corresponding standardized image dataset; calculating the optical flow field distribution of pixels in adjacent frame image data based on a dense optical flow algorithm and the standardized image dataset; extracting motion feature parameters of the UAVs from the optical flow field distribution to form a motion feature dataset of the UAVs; calculating the threat level quantification value of all detected UAVs within the UAV flight area based on the motion feature dataset and the actual distance between the UAVs and the key protection area; generating a priority interception sequence based on the threat level quantification value; and generating corresponding priority interception strategies based on different levels of UAV targets in the priority interception sequence.

The utility model discloses a full -automatic hydraulic cutting press relates to cutting press technical field, including frame, the top fixed mounting of frame has the top rack. The utility model adopts above -mentioned structure, and this device is through setting positioning guide mechanism, makes at work, starts first motor, drives the rotation of screw rod in the sliding slot, because the thread rotation of both ends is opposite, drives two sliders to slide relatively or to back, accurately adjusts the inside transmission guide pulley spacing of clamping frame, realizes to the positioning of both sides of product, starts second motor, drives worm, drives worm wheel and transmission guide pulley synchronous operation, and transmission guide pulley is pasted both sides of product, realizes flexible conveying of product through motor control, and this mechanism can steady clamping different size products, prevents the stamping and slides, realizes the automatic transmission again, greatly improves the stamping processing stability and automation degree, further improves production and processing quality and efficiency, satisfies the efficient production demand.

The utility model provides a kind of forming device of carton side page, comprising: base frame;Conveying part is set on base frame, and is used to convey to be folded side page box body, conveying part has the supporting surface of supporting to be folded side page box body;Trigger part is movably set on base frame, and is located in the side of conveying part, the top of trigger part is higher than supporting surface, trigger part has initial state and trigger state, to be folded side page box body can be contacted with trigger part and make trigger part switch from initial state to trigger state;Detection part is set on base frame, when trigger part is in trigger state, it can be inductively matched with detection part;Operating part is movably set on the side of base frame, and has the avoidance position of avoiding to be folded side page box body and the working position of being contacted with to be folded side page box body.The technical scheme of the application effectively solves the problem that detection part is easily disturbed when folding side page in related art.

The present invention relates to the field of forklift anti-collision technology, in particular to a forklift anti-collision system based on radar-vision fusion, including a panoramic picture splicing module, a visual recognition and tracking module, a microwave radar module, a data processing module, and a decision and control module; the panoramic picture splicing module: uses the pictures of four wide-angle cameras in front, behind, left and right to calibrate and splice to form a panoramic picture of the vehicle; the visual recognition and tracking module: performs object detection and target tracking on the panoramic picture in real time, and continuously outputs object coordinates and object types; the microwave radar module: continuously outputs point cloud map data of objects around the vehicle. The present invention can improve the accuracy and reliability of the anti-collision system, reduce the occurrence of false alarms, and enable the anti-collision system to more intelligently and efficiently ensure the safety of forklift operation.

The application discloses a secondary frequency control method and device resisting false data injection and a storage medium, belongs to the technical field of micro-grid control, and is used for performing secondary frequency control on a target distributed power generation unit in a distributed micro-grid. The method comprises the following steps: acquiring local frequency compensation amounts of each distributed power generation unit; inputting the local frequency compensation amounts of the remaining distributed power generation units into a pre-trained neural network, and outputting a predicted frequency compensation amount of the target distributed power generation unit; detecting whether false data injection occurs according to the local and predicted frequency compensation amounts of the target distributed power generation unit; and when it is detected that false data injection occurs, replacing the local frequency compensation amount of the target distributed power generation unit with the predicted frequency compensation amount of the target distributed power generation unit, and compensating for a frequency deviation caused by droop control of the target distributed power generation unit. The application can solve the problem that false data injection destroys the secondary frequency control function.

The application provides a composite extraction agent, a pretreatment method for detecting estrone in blood and a detection method for estrone in blood, and belongs to the technical field of analysis and detection.The composite extraction agent comprises mixed fillers of C18 fillers and PSA fillers, a lower layer solvent (methanol and / or isopropyl alcohol) and an upper layer solvent (n-hexane); and the mixed fillers are immersed in the lower layer solvent.The application adopts the above-mentioned composite extraction agent to complete the extraction of the sample to be detected through a pretreatment method of 'layered extraction' in only one step, and the operation is convenient; methanol and / or isopropyl alcohol are used as the extraction solvent, the toxicity is lower, the interference with mass spectrometry is less, the matrix effect is reduced, and the accuracy and sensitivity of subsequent detection are improved; liquid chromatography-triple mass spectrometry is used for detection, the interference of daughter ions is avoided by monitoring parent ions, the anti-interference ability is stronger, and quantitative and qualitative analysis of estrone in blood can be accurately and efficiently realized.

This invention belongs to the field of urea hydrolysis technology, specifically relating to a method for detecting chloride ion content in urea hydrolyzer wastewater. This invention employs a dual method of removing organic matter from the water sample through organic filter paper filtration combined with digestion. It uses neutralization to remove hydroxide ions and heating and boiling to thoroughly remove ammonium ions. Furthermore, it uses sodium bicarbonate, a strong base and weak acid salt, to adjust the pH of the system, avoiding the introduction of large amounts of hydroxide ions during pH adjustment, reducing side reactions with the titration standard solution, and minimizing interference with indicator color development and titration endpoint determination. This invention effectively avoids multiple interfering factors such as mechanical impurities, ammonium ions, hydroxide ions, and organic matter, significantly improving the accuracy and reliability of chloride ion content determination results in urea hydrolyzer wastewater.

The application discloses a formaldehyde concentration detection method based on image recognition and relates to the technical field of formaldehyde concentration detection.The method comprises the following steps: S1, standard solution color development: taking nine colorimetric tubes with consistent specifications, preparing different concentration standard formaldehyde solutions in each colorimetric tube, and adding a color developing solution to develop color. The formaldehyde concentration detection method based on image recognition does not need to rely on large laboratory equipment such as a spectrophotometer, but can complete detection only through standardized image acquisition and an AI model, supports on-site instant operation, greatly improves detection portability and scene adaptability, meets the requirements of rapid detection in multiple scenes such as indoor and in-vehicle scenes, and avoids interference factors such as manual colorimetry, operation methods and environmental illumination through a standardized color development, image acquisition and AI correction process, and the model is optimized with mean square error and mean absolute error as core indexes.

The application discloses a display method and device of data in a vehicle, a vehicle, a storage medium and a processor. The method comprises the following steps: in response to the interconnection between a mobile terminal and the vehicle, determining an application program running in the mobile terminal; determining a target category of the application program, and acquiring driving data of the vehicle, wherein the driving data is used for representing the driving state of the vehicle, and the target category is used for representing the function of the application program; determining the display state of the application program on the vehicle based on the target category and the driving data; and displaying the display data of the application program on the display device of the vehicle according to the display state. The application solves the technical problem that the display content of the application program leads to low driving safety.

This invention discloses a vehicle roof lighting system that adaptively adjusts based on driving lighting needs, belonging to the field of vehicle lighting technology. It includes a road condition recognition module, a vehicle status acquisition module, a central control module, a lighting execution module, an anti-glare coordination module, and a human-machine interaction module. The road condition recognition module acquires geological texture features, geometric contour information, and ambient light intensity within a preset range in front of the vehicle, generating a multi-dimensional semantic map. The vehicle status acquisition module monitors the vehicle's dynamic parameters and dynamic pose in real time, performs noise reduction preprocessing on the raw sensor data, and outputs vehicle driving posture parameters. Through a multi-sensor layout, Kalman filtering algorithm, and multi-degree-of-freedom mechanical actuators, it meets the urgent need for high-quality auxiliary lighting for off-road vehicles in complex and dynamic driving environments, significantly improving driver visibility safety. Simultaneously, through intelligent anti-glare coordination logic, it enhances road traffic safety.

The invention provides a TSV through hole-based 3D lamination alignment detection method, device and equipment and a storage medium, and the method comprises the steps: carrying out the high-resolution imaging of the side wall of a TSV through hole through a section sample obtained by carrying out the layer-by-layer etching of each TSV through hole in a first lamination layer in a direction perpendicular to the surface of a wafer, and obtaining a side wall image; measuring the longitudinal continuous distribution of the conductive filling material in the TSV through hole based on the side wall image to obtain a current response map; determining an effective conductive axis based on position information of a depth interval in which the current intensity is higher than a preset intensity threshold value in the current response map, and constructing a reference axis based on the effective conductive axis in combination with geometric center coordinates of a top opening of the TSV; and calculating a space offset vector of the reference axis of the corresponding TSV between the two laminations based on the reference axis of the TSV at the corresponding position on the second lamination to obtain an alignment deviation value. According to the invention, the robustness of alignment detection of the 3D lamination under a complex process condition is improved.

This invention provides a method for controlling a home appliance. The method involves running a selected program, stopping a monitoring device, and if the first subroutine of the program is detected to have finished running, then starting the monitoring device and executing a preset function of the home appliance in response to a sensing signal sent by the monitoring device. The monitoring device is configured to monitor targets around the home appliance and send the sensing signal. If the first subroutine is detected to be running, it is determined whether the first subroutine meets set conditions. If so, the first subroutine is paused, and the monitoring device starts running. In response to the sensing signal sent by the monitoring device, the preset function of the home appliance is executed, and the monitoring device is stopped and the first subroutine continues to run. The method controls the running time of the monitoring device to prevent interference from internal interference components during the program's operation, which could affect the monitoring results.

The present invention relates to the technical field of automobile antennas, and discloses an automobile antenna device, comprising a bottom plate. The present invention, through the designed hollow shell and plug-in plate, enables the device to be fixed when a covering shell is inserted into the inner side of a limiting seat to protect an antenna circuit board, so that the covering shell cannot be separated from the inner side of the limiting seat when the expansion bolt is not taken out, thereby ensuring that the covering shell remains stable in harsh environments, such as vibration and impact when a vehicle is running at high speed, and extending the service life of the antenna. After the plug-in plate is inserted into a slot of the hollow shell, a limiting strip covered with a damping pad is inserted into a limiting groove on the front end surface of the plug-in plate, thereby increasing the resistance between the plug-in plate and the limiting strip inside the hollow shell. In a high-vibration environment, increasing the resistance helps to fix the covering shell, prevents the plug-in plate from shifting or loosening from the hollow shell due to vibration, and solves the problem that the covering shell can be easily separated from the inner side of the limiting seat.

This invention discloses a nuclear magnetic resonance (NMR) method for measuring the solid phase deposition of crude oil in porous media, belonging to the field of oil and gas reservoir development technology. By using a single saturation of crude oil in a core sample and leveraging the characteristics of online NMR technology, the method employs a comparison of experimental and NMR measurements, along with a 1:1 standard line reference, to determine the standard echo interval T in the transverse relaxation time T2 measurement acquisition parameters. E This method directly measures the amount of solid phase deposition in pore fluids in situ, solving the technical problems of existing technologies that cannot maintain the original characteristics of the sample, effectively avoid the interference of solid skeleton response and solid phase deposition particles, and are difficult to measure the solid phase deposition content of active oil in situ. It achieves the technical effect of rapid, efficient and accurate measurement of the amount of crude oil solid phase precipitation in cores under specific temperature and pressure conditions. The method is reliable in principle, simple to operate and highly applicable, and the test results are accurate and reliable, making it more suitable for the fine characterization needs of complex oil and gas reservoirs.