33results about "Devices using time traversed" patented technology

Disclosed are method and electronic components for: i) electronically extracting a sequence of values from a measurement signal corresponding to a position of a moving object, wherein the sequence of values indicates the position of the moving object at corresponding time increments; ii) electronically determining at least one of an estimate for a velocity of the moving object and an estimate for an acceleration of the moving the object based on a plurality of the values in the sequence of values; and iii) electronically correcting a value in the sequence of values to substantially reduce the effect of processing and signal delays based on one or both of the velocity and acceleration estimates.

This invention discloses a method, measuring device, and storage medium for measuring the speed of an object conveyed by a belt conveyor. The method includes: capturing images of a conveyor belt with laser lines using two cameras; matching the images captured by the two cameras to obtain the depth of the object containing the laser lines; calculating an evenly spaced object thickness distribution based on the obtained depth of the object containing the laser lines; obtaining the displacement of the object on the conveyor belt between two consecutive frames based on the evenly spaced object thickness distribution; and calculating the object's velocity based on the obtained displacement between the two consecutive frames. This invention obtains the evenly spaced object thickness distribution by interpolating the depth of the object containing the laser lines and accurately extracts the belt conveyor speed information using a cross-correlation algorithm, achieving direct measurement of the conveyor belt speed and ensuring high measurement accuracy.

The application discloses a test method of combined load of explosion shock wave and fragment. The application converts the interference of the shock wave into controllable system initial speed through the mechanical design of integral sliding, and effectively realizes reliable and accurate speed measurement of the combined load in the explosion near field. Through adjusting the pre-impulse target mass, a single set of device can adaptively match explosion tests of different equivalent. Through adjusting the height of the rear speed measurement target, the flight speed of fragments at different heights can be measured, so that the characteristic speed of the fragment group is effectively reproduced, and a more complete flight speed gradient of the fragment group is obtained. Meanwhile, the movement of the pre-target also protects the precise speed measurement unit at the rear end, and improves the durability of the equipment.

We provide not only a firearm analysis device for determining parameters indicating a firearm from shots fired from a weapon, but also corresponding methods, corresponding firearms, and computer program products. [Solution] This device comprises a voltage generation unit that generates an AC voltage (Ue) during the counter-recoil movement and / or recoil movement of a movable weapon component that occurs during firing. This device generates a measurement signal (IN) from the generated AC voltage (Ue). + It is characterized by a signal processing unit that generates signals, a signal evaluation unit that determines a first time point and a second time point during the counter-recoil movement and / or recoil movement of the movable weapon part, and a time determination unit that determines the time period between the first time point and the second time point.

The invention relates to a method and an apparatus for determining the running speed of a long rod having a surface texture. The apparatus comprises a sensor assembly which generates a signal in response to the movement of the surface texture of the long rod. A computing unit is employed to collect the signal and to calculate the running speed of the rod in the direction of the sensor measurement.

The application relates to the technical field of pipeline detection, in particular to a method and system for measuring the running speed and mileage of an inner detector in a pipeline. The method comprises the following steps: acquiring vibration signal data collected by an inertial measurement unit during the running of the inner detector in the pipeline; identifying and extracting a plurality of vibration signal pairs generated when the inner detector passes through a weld seam of the pipeline from the vibration signal data; calculating the time difference between the first vibration signal and the second vibration signal in each vibration signal pair; calculating the instantaneous speed of the inner detector when passing through the current weld seam according to the preset distance between the front part and the rear part of the inner detector and the time difference; and calculating the real-time running speed and mileage of the inner detector based on the plurality of instantaneous speeds, the attitude data and the acceleration data collected by the inertial measurement unit, and through a data fusion algorithm, so as to solve the problem of inaccurate trajectory calculation and defect positioning of the inner detector.

The application relates to the technical field of servo motors, and provides a pulse output method and device, electronic equipment and a storage medium. The method obtains an encoder position increment according to a preset sampling period, determines the pulse phase relationship corresponding to the quadrature two-phase pulses in each sampling period according to the positive and negative of the encoder position increment obtained in each sampling period, determines the pulse square wave level flip beat corresponding to the quadrature two-phase pulses in each sampling period according to the encoder position increment corresponding to each sampling period and a preset increment threshold, and outputs the quadrature two-phase pulses corresponding to each sampling period according to the pulse phase relationship and the pulse square wave level flip beat in each sampling period. According to the application, the rotation direction is determined according to the positive and negative of the encoder position increment, so that the phase relationship of the quadrature two-phase pulses is directly determined. Then, the position increment and the preset threshold are accumulated and compared to obtain the pulse square wave level flip beat, and the quadrature two-phase pulses are output according to the pulse square wave level flip beat.

A system includes a first acquisition unit, a second acquisition unit, and an inspection execution unit. The first acquisition unit acquires first speed from inspection equipment. The inspection equipment includes a roller that is rotatable while supporting a wheel of a vehicle and measures speed of the vehicle by utilizing a rotation of the roller.. The first speed is the speed measured by the inspection equipment. The second acquisition unit acquires second speed during measurement of the speed of the vehicle by using the inspection equipment. The second speed is speed displayed on a display device included in the vehicle to display the speed of the vehicle. The inspection execution unit uses the acquired first speed and the acquired second speed to execute inspection of the display device.

A firearm analysis device for determining the firing mode of a firearm (7) is described. The device comprises a voltage generation unit (401) that generates an alternating voltage (Ue) during the forward and / or reverse movement of a moving part of the firearm (120), a signal processing unit (410) that converts the alternating voltage into electrical energy and stores it in an energy storage device, and a signal evaluation unit (420). The signal evaluation unit remains in activated mode during two consecutive firings if it is supplied with a minimum supply voltage and switches to a non-activated mode if the supply voltage falls below the minimum. The firing mode is determined by checking whether the signal evaluation unit remains in activated mode (continuous fire) or switches to non-activated mode (single fire).The device can be integrated into firearms and enables a reliable distinction between single shots and continuous fire.

This application discloses a high-performance laser detection system, a laser detection data analysis method, and an apparatus, relating to the field of laser testing. The system includes: a laser, two optical lens groups, a fiber optic cone, a photodetector, and a signal processing circuit. The laser and the two optical lens groups work together to form two laser screens. The fiber optic cone is coupled to the surface of the photodetector. The photodetector detects the laser signals passing through the two laser screens. The signal processing circuit amplifies the electrical signals using a hyperbolic tangent amplifier circuit to obtain the original laser screen signals. The method includes: sequentially filtering, fragment identification, zero-time explosion identification, and cross-screen matching of the original laser screen signals, and outputting fragment signal matching pairs and their corresponding velocities. This application improves the response speed and dynamic range of the detected light intensity of the laser detection system, while simultaneously achieving accurate identification and parameter calculation of multiple fragments, significantly enhancing the detection capability and analysis efficiency of traditional laser screens.

The application provides an IO-Link background suppression sensor and a detection signal processing method thereof. The IO-Link background suppression sensor provided by the application comprises a signal acquisition module, a first logic operation module and a first signal processing module. The signal acquisition module is used for acquiring a detection signal. The first logic operation module is used for performing first logic operation on the detection signal to obtain a first logic operated signal. The first signal processing module is used for performing first delay processing on the first logic operated signal to obtain a first delay processed signal, performing inversion processing or non-inversion processing on the first delay processed signal to obtain a first output signal, and outputting the first output signal through a first output pin. The IO-Link background suppression sensor provided by the application can improve the ability of the IO-Link background suppression sensor to process the detection signal, and make the IO-Link background suppression sensor have edge computing capability.

The present application relates to the technical field of measurement, and particularly to a method for measuring speed with a gravitational field as a reference system, which can measure the speed of a substance without an external physical reference system. A reference object having a direct force interaction with the substance is an absolute reference system, such as light or electromagnetic waves propagating in a gravitational field or a substance, which has a direct force interaction with the field or the substance. Relative to the light, the gravitational field and the substance are absolute reference systems of the light. Because of the existence of the absolute reference system, when the substance has a relative speed relative to the field, the speed of the substance itself can be measured by the optical path (the optical path refers to the propagation path length of light or electromagnetic waves) of the field, and this process is the speed measurement with the gravitational field as a reference system.

The present application belongs to the technical field of mechanical equipment manufacturing, and particularly relates to a grease stirring resistance and viscous resistance measuring device and method. The stirring resistance and viscous resistance measuring device is designed according to the geometric configuration relationship between the rolling body and the rolling track, and can represent, calculate and evaluate the stirring resistance and viscous resistance of the rolling bearing grease. The gravitational potential energy is converted into kinetic energy and then into internal energy received by the rolling body during operation. The stirring resistance and viscous resistance of the grease under different motion conditions are calculated by using the energy conversion method. The reliability is verified through measurement tests, and the measurement results can be further used as a technical standard for judging the physicochemical properties of the grease, and have good application prospect. The device structure is simple and effective, the measurement means and method are standardized, and can provide a basis for estimating the stirring resistance and viscous resistance of the grease.

The application provides a micro catheter rotating speed measuring device, system and method, equipment and medium, the device comprises a rotating speed sensor and a non-uniform measuring component, the rotating speed sensor is fixed at the end of the basic sensor in the micro catheter, and the emission and receiving direction of the rotating speed sensor is perpendicular to the axial direction of the micro catheter; wherein the rotating speed sensor is used for emitting and collecting rotating speed sensing signals for the calculation of rotating speed; the non-uniform measuring component has non-uniform thickness along the circumferential direction, and has penetrating characteristics for the basic sensing signals emitted by the basic sensor and reflecting characteristics for the rotating speed sensing signals emitted by the rotating speed sensor. The application adds the measuring component with non-uniform thickness and the rotating speed sensor in the conventional catheter, and the rotation angle and rotating speed of the sensor are calculated according to the time delay of the sensing echo signals. This scheme can not only improve the accuracy of the rotating speed measurement of the sensor in the micro catheter, but also can be used for measuring the rotating speed and rotation angle of the micro catheter without shaft driving.

The present application relates to the technical field of positioning and speed measurement of super-speed maglev train, in particular to a super-speed positioning and speed measurement method and system based on laser coding, mainly including a plurality of laser code readers with unique numbers which are uniformly distributed along the track of the train, and the laser signals read each time are coded; the activation state of the laser code reader is determined according to the signal vector, and the state information of the laser code reader is transmitted to the positioning and speed measurement algorithm model. The laser propagation speed is fast, the photoelectric response speed is fast, and the positioning and speed measurement algorithm is simple, so that the delay of the speed positioning method can reach microseconds; through the combination of absolute coding and incremental coding, the problem of initial positioning loss is solved, the design of the ID code plate can make the laser coding not affected by the vertical floating of the train, and the redundant setting of the response of the two laser code readers increases the reliability and safety of the positioning and speed measurement algorithm results.

This invention provides a planar receiving coil module and a speed measurement and positioning system having the same. The planar receiving coil module includes: a PCB coil, which comprises a PCB board and a coil assembly printed on the PCB board; and a shielding unit disposed outside the PCB coil, used to shield against alternating electric fields from interference sources. The technical solution of this invention solves the technical problem that existing coil modules are large in size and unsuitable for installation.

The application provides a kind of on-line detection device and method for hemispherical resonator chemical polishing rate, the device obtains the angular position signal of resonator rotation through motion synchronization module, constructs optical channel using protection and sealing structure, based on the angular position signal and optical channel, using multi-wavelength white light interference unit and differential laser ranging unit two measuring units are used for measuring thickness and instantaneous rate respectively, while using environmental compensation module to generate chemical polishing solution environmental compensation term, the polishing rate is obtained by fusing the thickness, instantaneous rate and chemical polishing solution environmental compensation term. The technical scheme of the application is used to solve the technical problem that the hemispherical resonator chemical polishing process lacks real-time, high-precision thickness and removal rate monitoring means in the prior art.

The invention describes a table tennis ball (2) on the spherical ball surface (6) of which a marking (8) is applied which makes the ball spin detectable with measuring technology. The marking (8) comprises a number of marking points (P i ) which are distributed on the ball surface (6) in such a way that the standard deviation of the lengths (Z i,j ) of the great circle lines (20) between each marking point (P i ) and its three nearest neighbours (14, 16, 18) is at least 12% of the average value (μ) of these lengths (Z i,j ) and the minimum length of the great circle lines (20) between each marking point (P i ) and its three nearest neighbours (14, 16, 18) is at least 40% of the average value (μ) of these lengths (Z i,j ).

The application relates to the technical field of baling belt production equipment, in particular to a baling belt production line waste belt statistical method and system. Specifically, the baling belt production line waste belt statistical method comprises the following steps: receiving a belt breakage event signal sent by a belt breakage detection device through a cloud server, wherein the belt breakage event signal comprises a belt breakage starting moment, a belt breakage ending moment and a production line identifier; obtaining a belt material specification parameter corresponding to the current production line according to the production line identifier; receiving a weight data message sent by a winding machine, wherein the weight data message comprises a gross weight value, a winding number, a winding machine identifier, a winding completion moment and a winding attribute identifier; the winding attribute identifier comprises normal winding, scattered winding, waste winding or interface waste winding; and after the belt breakage event signal, the belt material specification parameter and the weight data sent by the winding machine are associated and summarized, a multidimensional statistical result is generated.

The utility model relates to the technical field of crane speed detection, in particular to a crane trolley and trolley speed detection device, which comprises a measuring host and a base, the measuring host is fixed above the base, and a battery, a motor driving module and a motor are arranged in the base. A laser ranging module and a high-precision inclination angle sensing module are integrated in the measuring host, a driving shaft of the motor is mechanically connected with a rotating part of the measuring host, the battery is electrically connected with the motor driving module, and the motor driving module is electrically connected with the motor. The problems that in the prior art, measurement equipment is complex in installation, high-altitude operation is needed, measurement precision is limited, manual intervention is much, and efficiency is low are effectively solved, and a safer, more efficient and more convenient crane trolley and trolley speed detection scheme is provided.

The application belongs to the technical field of unmanned aerial vehicle control. An unmanned aerial vehicle autonomous tracking method and system based on monocular vision are provided. The target unmanned aerial vehicle image captured by the monocular camera of the tracking unmanned aerial vehicle is obtained, and the three-dimensional space coordinates and the current relative speed of the target unmanned aerial vehicle are determined according to the target unmanned aerial vehicle image. The image error vector is calculated according to the three-dimensional space coordinates. According to the three-dimensional space coordinates and the current relative speed, the current relative speed is optimized by using the Kalman filtering algorithm to obtain the optimized current relative speed, and the position error vector is determined according to the optimized current relative speed. According to the image error vector and the position error vector, the fusion control input vector is determined, and according to the fusion control input vector and the current relative speed, the updated relative speed is determined for tracking the tracking unmanned aerial vehicle. The application greatly improves the control accuracy of the unmanned aerial vehicle autonomous tracking.

A tachymeter device for indicating an average speed of a moving object and a wristwatch comprising such a tachymeter device comprise a timer and an activator for manually starting the timer, when the object passes a starting mark, and stopping the timer, when the object passes a defined distance from the starting mark. They further comprise a housing, a scale for indicating an average speed of the moving object and a pointer for indicating a measured average speed on the scale, wherein the measured average speed is derived from said defined distance and a time to cover said defined distance measured by the timer. The scale is designed as a scale part that is arranged detachably at the housing. The scale part is selected from a set of scales parts comprising a plurality of differing scale parts each having a scale with speed indication for indicating speed ranges corresponding to differing pre-defined distances.

This application discloses a vision-based cored wire feeding device and its usage method, relating to the field of steel smelting technology, including a vision measurement module, a control module, and an auxiliary module. This vision-based cored wire feeding device and method directly acquires the actual moving speed of the cored wire through vision measurement, achieving higher detection accuracy compared to existing indirect detection methods. Combined with PID closed-loop regulation and dual-path feeding length detection, it effectively eliminates feeding errors caused by slippage, controlling the cored wire feeding error to a very small range. This solves the problem of substandard steel composition caused by inaccurate feeding, eliminating the need for secondary cored wire feeding. The vision measurement module possesses high-frame-rate image acquisition and high-speed data processing capabilities, enabling extremely short response times for slippage detection. It can identify and trigger adjustments instantly upon slippage, avoiding feeding deviations caused by delayed intervention in existing technologies and effectively reducing alloy raw material waste.

This invention relates to the field of photoelectric measurement technology and provides a real-time measurement method for the flight trajectory of a target based on a multi-node orthogonal light curtain. The method includes: deploying at least two measurement nodes along the target's flight path; each node forming a two-dimensional detection light curtain through an orthogonal linear array photoelectric sensor and a collimated light source; using a high-speed signal processing unit to process the shading pulse signals from all sensor channels in parallel, and extracting the timestamps and two-dimensional position coordinates of the target as it passes through each light curtain in real time; and reconstructing the target's three-dimensional spatial position, velocity vector, and flight attitude at each moment in real time using spatial intersection and time difference algorithms based on the node spatial coordinates, timestamps, and two-dimensional coordinates. This invention enables high-precision and low-latency synchronous measurement of all parameters, including position, velocity, and attitude, of a high-speed flying target, providing crucial real-time trajectory data support for applications such as high-repetition-rate laser target firing.

The present application relates to a kind of helical rotation speed and material speed measurement method based on electrostatic primary and secondary frequency signal, the material transported is granular material, with two electrodes as electrostatic sensor, two electrodes are fixed on the inner wall of material conveying pipeline of screw conveyor, the angle of elevation of two electrodes is consistent with the helical angle of screw conveyor, and helical rotation speed and material speed detection includes the following steps: collecting the electrostatic signal of two electrodes of electrostatic sensor;Two electrode electrostatic signals are Fourier transformed, and according to frequency spectrum analysis, the primary frequency and secondary frequency of two electrode electrostatic signals are determined;Primary frequency mainly reflects the motion of helical blade, selects the primary frequency of any electrode of two electrodes, calculates the helical rotation speed, and secondary frequency mainly reflects the motion of granular material, uses harmonic wavelet to extract the narrow-band signal of two electrode secondary frequency respectively, and the speed of granular material is calculated by cross correlation.

The present application relates to the technical field of vehicle speed estimation, and discloses a vehicle speed estimation method and device based on aerial photography using an unmanned aerial vehicle, and a medium, for use in solving the technical problems in existing unmanned aerial vehicle-based vehicle speed estimation methods of high costs and significant calculation errors, which result from the need for cumbersome positioning and calibration to achieve reliable vehicle speed calculations. The method comprises: performing region-of-interest extraction and image noise reduction preprocessing on video data collected by aerial photography using an unmanned aerial vehicle, so as to obtain preprocessed video data; performing enhancement processing on image pixel values in the preprocessed video data to obtain enhanced video data; performing straight-line fitting processing related to lane boundary lines on a lane boundary line region in the enhanced video data to obtain lane boundary line position features; performing geometric correction and spatial alignment processing on each image frame; performing recognition processing between a vehicle and a dashed white segment of a lane divider line on the final video data; and estimating the vehicle speed by means of a dynamic-static frame difference method to obtain the actual vehicle speed.

A speed calculation device, including: an overhead wire position calculation unit 111 that measures a distance from an object such as a trolley wire 103 and a catenary wire 104 and obtains, based on a measurement result of a sensing unit 108 installed in a vehicle 101 that moves on rails 102, a first position, which is a position of the object with reference to the rails 102 at a place away from the sensing unit 108 by a first distance, and a second position, which is a position of the object with reference to the rails 102 at a place away from the sensing unit 108 by a second distance; and an estimated speed determination unit 114 that calculates a speed of the vehicle 101 based on a difference between the first distance and the second distance and a difference between times when the first position and the second position coincide with each other. This provides a speed calculation device and a speed calculation method that can more accurately measure the speed of a moving body as compared with a case of not including the configuration of the present invention.