49 results about "High-speed camera" patented technology

The present invention provides a high-speed image analysis method suitable for identifying the interaction structure between flames in multi-jet flames, and belongs to the technical field of flame structure analysis. The present invention processes the flame self-luminescence / induced fluorescence image taken by a high-speed camera through a digital image processing method to identify the overlapping area between multi-jet flames, and specifically includes the following steps: selecting the analysis area, dividing the analysis area, Gaussian filtering, feature corner point detection, feature corner point supplementation, optical flow field calculation, flame area discrimination, flame outer contour recognition, and adjacent flame interaction extraction. The present invention discloses a high-speed image analysis method suitable for identifying the interaction structure between flames in multi-jet flames, which can identify the interaction structure between multiple flames from the flame image, and has high recognition efficiency. It can provide a method for further analyzing the interaction between flames and is very suitable for use in the field of flame structure research in multi-nozzle combustion chambers.

1. Name of the product in this design: Camera (High-speed camera - SH3). 2. Purpose of this design: This design is used for photographing high-speed moving targets. 3. The key design features of this product are its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This invention provides a rapid exposure adjustment system and method for high-speed space cameras, belonging to the field of deep space exploration. Combining camera image grayscale statistics and PIN tube metering technology, it integrates the advantages of two traditional exposure time adjustment methods. This system can meet the needs of rapid exposure time adjustment for high-speed cameras in transiently bright scenes, avoiding overexposure of consecutive images due to transient brightness caused by impacts. Simultaneously, it can achieve fine-tuning of exposure time in scenes with gradually changing targets, ensuring imaging effects on sputtering clouds generated by impacts. This invention implements an exposure time adjustment method that combines fast and slow adjustments, as well as coarse and fine adjustments, effectively guaranteeing imaging effects in complex scenes throughout the entire kinetic energy impact process.

The application provides a transparent soil sliding body node motion trajectory tracking method and system, which obtains a motion image sequence and node trajectory data of the transparent soil sliding body through a high-speed camera and a particle image velocimetry testing device; identifies a trajectory fracture interval based on the node trajectory data, extracts motion parameters of the sliding body from the motion image sequence as constraint conditions, and correlates and repairs the fractured trajectory by using a polynomial interpolation method; verifies the repaired trajectory, and outputs complete node motion trajectory data. The application correlates and repairs the fractured trajectory by using the polynomial interpolation method, effectively makes up for the trajectory vacancy problem caused by the transparent soil particle shielding, the testing device shielding and the data acquisition loss, and realizes the trajectory tracking of the whole process of the sliding body node.

The present invention discloses a high-speed water entry impact test system and test method. The test system includes a carbon dioxide phase change acceleration module and a test structure assembly, and the test structure assembly includes a cylinder, a piston rod assembly, an electromagnetic suction cup, and a counterweight limit plate; a pressure sensor and a high-speed camera are installed in the test structure landing area in the test water tank, and a temperature sensor is installed in the carbon dioxide phase change acceleration module; in the initial state, the electromagnetic suction cup fixes the counterweight limit plate, the piston rod assembly, and the test structure in the initial position; when the test starts and the test structure has not entered the water, the counterweight limit plate, the piston rod assembly, and the test structure accelerate downward together until the test structure is accelerated to the target speed; when the test structure enters the water, the gas in the cylinder is depressurized and the acceleration of the test structure is stopped, and the test structure falls into the water body of the test water tank at the target speed. The present invention does not require a high water entry height to achieve high-speed structural entry into the water.

The detection system of an x-ray or charged particle imaging system utilizes a high bandgap, direct conversion x-ray detection material. The signal of the x-ray / charged particle projection is recorded in a spatial light modulator, for example a liquid crystal (LC) light valve. The light valve is then read out by a polarized light optical microscope and a high speed camera. The camera is used to track the halo in the light valve to resolve its intensity and correlate it to the intensity of the incoming x-ray photons or charged particles. This allows for a spatially resolved imaging with an x-ray and / or charged particle spectrometer.

The application discloses a flexible multi-body dynamics method verification experimental device, which is used in the field of flexible multi-body dynamics experiments. The system comprises a structure system, a driving system, a measuring system and a connecting system. The structure system comprises a flexible test piece, an auxiliary beam and a counterweight piece. The driving system comprises a servo motor and a feedback control component thereof. The measuring system comprises an accelerometer, an angular displacement sensor, an eddy current sensor and a high-speed camera. The connecting system comprises equivalent torsional spring pieces and design modules for fixing two flexible beam test pieces together, and the system fundamental frequency of the flexible beam is adjusted by changing the torsional spring stiffness. The application provides a device for multi-section flexible beam dynamics experiments, which can accurately measure the displacement response and acceleration response of the test piece, is consistent with the modeling analysis results, and provides an important tool for related research and development.

This application relates to the field of sports event tracking and filming technology, and discloses a method and system for sports event tracking and timing filming. The method includes: analyzing the real-time status of participants based on real-time data collected from at least two mobile high-speed cameras and real-time timing data of the event to obtain real-time status information; calculating the probability of participants at each position based on the real-time status information to construct a set of position distribution probability pipelines; analyzing the coverage value of cameras at different positions on each position distribution probability pipeline in the set of position distribution probability pipelines, and selecting the camera combination with the optimal coverage value; analyzing the real-time status information of participants, assigning at least one tracking role and tracking target to each camera in the camera combination to obtain a tracking and filming strategy; and controlling the corresponding camera to perform target tracking according to the tracking and filming strategy. This application can improve the success rate of capturing moments such as overtaking and sprinting of participants, and improve the quality of tracking and filming.

The invention provides a high-speed camera trigger control device and method, and is applied to the technical field of camera control. The equipment comprises a trigger threshold adjustment unit, a signal analysis and comparison unit and a camera trigger control and time service unit. The trigger threshold adjusting unit comprises an FPGA control chip and a DAC chip. The FPGA control chip responds to the threshold setting instruction to generate a threshold digital signal and generates a time frame in an ASCII format according to the IRIG-B time signal; the DAC chip generates a trigger threshold according to the threshold digital signal; the signal analysis and comparison unit generates TTL trigger signals when the target pulse signals meet a trigger threshold value, and the TTL trigger signals are used for triggering a plurality of high-speed cameras to carry out image acquisition; and the camera trigger control and time service unit adopts a coaxial cable to send TTL trigger signals to the plurality of high-speed cameras and adopts a twisted-pair cable to send time frames to the plurality of high-speed cameras. The method is suitable for synchronous trigger control and high-precision time synchronization of a plurality of high-speed cameras.

The present invention discloses a vibration displacement measurement method and measurement system based on multi-source data fusion, which belongs to the field of vibration measurement technology. The vibration displacement measurement method based on multi-source data fusion includes the following steps: obtaining motion sequence images of an elastic tube and a rigid tube through a high-speed camera, and simultaneously obtaining the vibration acceleration signal of the elastic tube through an acceleration sensor; extracting the displacement trajectory of the elastic tube and the rigid tube obtained by the high-speed camera, and separating the flow-induced vibration displacement time-history curve of the elastic tube; performing frequency domain analysis on the displacement trajectory data to determine the frequency band of the rigid tube and the elastic tube; band-pass filtering the acceleration sensor signal based on the frequency band of the flow-induced vibration, and using the time domain displacement data of the rigid tube to compensate for the error of the acceleration sensor integral trend term; performing secondary integration on the filtered acceleration sensor signal, and outputting the corrected displacement information. The vibration displacement measurement method and measurement system based on multi-source data fusion described in the present invention can solve the problem that the existing vibration measurement method cannot achieve an effective unification of measurement accuracy and engineering applicability.

The application discloses a kind of high impact load under spring mass system dynamic response polarized optical measurement system and method, belong to optical measurement technical field, for analog launch load and service load etc. High impact load working condition of spring mass system, by constructing birefringent interference color feature unit on the surface of the base and mass block of spring mass system, using polarization dark field to filter background stray light, cooperate with high-speed camera, so that mass block presents as high-contrast color spot, through HSV color segmentation and relative displacement calculation based on motion coordinate system, the non-contact, clear and continuous measurement of millisecond transient displacement response of mass block is realized.The application effectively fills the experimental measurement blank of high overload dynamics, eliminates the interference of the increased mass caused by the introduction of sensor in contact measurement, and provides high-fidelity visual data support for the dynamic response research of spring mass system in high dynamic environment.

The utility model belongs to battery shell injection moulding technical field especially a injection moulding mechanical hand for battery shell injection moulding industry, including frame, the inside of frame is provided with rotating device, rotating device includes detection sensor, detection sensor passes through high speed camera and combines image processing algorithm and judges battery shell placement direction, through setting clamping device, the clamping of battery shell is carried out, the telescopic rod of electric push rod telescopic drive slider to lift, when slider rises, the compressed stainless steel spring makes the clamping block reset, thereby makes two clamping blocks relative motion, clamps the battery shell, and the silicon layer is fixedly bonded, and the silicon layer is contacted with the battery shell, improves the clamping force and avoids the damage to the battery shell surface, the descending of slider, drives the clamping block to move back, thereby releases the clamping fixation to the battery shell.

The application provides a fast exposure adjustment system and method for a space high-speed camera, belongs to the field of deep space exploration, combines camera image gray scale statistics and PIN tube photometry technology, collects the advantages of two traditional exposure time adjustment methods, can meet the fast exposure time adjustment of the high-speed camera in a transient light scene, avoids overexposure of continuous images of the camera due to impact of transient high light, and can also realize fine adjustment of the exposure time in a slowly changing target scene, so as to ensure the imaging effect of a sputtering cloud of sputtering objects generated by impact. The exposure time adjustment method combining fast adjustment with slow adjustment and coarse adjustment with fine adjustment is realized, so that the imaging effect of a complex scene in the whole process of kinetic energy impact can be effectively ensured.

The utility model discloses a small size high -speed camera structure of imaging board detachable belongs to high -speed camera structure technical field, the utility model discloses a baffle, front shell and rear shell, and the cooperation board connector is connected between the baffle and the front shell, sets up the mounting hole on the front shell, and the convex block is installed to the lateral wall of front shell, and the thread hole is seted up in the convex block, and the imaging board mounting surface and the board connector are seted up on the front shell, and the hole is seted up on the baffle, and the counterbore is seted up to one end of the hole, and the recess is seted up to the lateral wall of baffle, and the contact plate is seted up to the lateral wall of baffle, and the hole is cooperated with the mounting hole, and the board connector is seted up between the contact plate and the imaging board mounting surface.

A printed circuit board (PCB) includes one or more signal layers in between a first surface and a second surface, the one or more signal layers including a first signal layer. The PCB includes a connector interface disposed on the first surface and a first signal via electrically coupled to the connector interface. The PCB includes first transmission line disposed at the first signal layer electrically coupling a first location to a second location of the first signal layer and a second signal via disposed at the second location. The PCB includes a power-over-cable circuit disposed on the first surface and electrically coupled to the second signal via and a receiver circuit disposed on the first surface adjacent to the power-over-cable circuit. The PCB includes a second transmission line disposed on the first surface layer electrically coupling the power-over-cable circuit to the receiver circuit.

The present application relates to the technical field of blood vessel performance test, and particularly relates to a test method for blood vessel tensile force-strength-strain and crack generation speed. The method comprises the following steps: S1, unevenly sized speckle paint point speckle processing is performed on the blood vessel; S2, a tensile fracture test is performed, a force-displacement curve is recorded by a computer, a peak tensile force and a peak strain of the blood vessel are derived, and a high-speed camera is used for shooting at the same time; S3, the tensile fracture process of the blood vessel is analyzed in real time according to the photos shot by the high-speed camera in step S2, and a crack generation speed is inferred; S4, a cross-sectional area of a tensile fracture surface of the blood vessel is calculated by using Image J software; and S5, a peak stress of the blood vessel is calculated according to the peak tensile force obtained in step S2 and the cross-sectional area of the blood vessel obtained in step S4.

The invention relates to a smooth blasting mesoscopic process visual analysis system and method. The system comprises a borehole peeping instrument, an optical endoscopic instrument, a high-speed camera and a data processing device. The drilling peeping instrument is used for checking and recording speckle changes on the blasting hole of the smooth surface; the optical endoscopic instrument is used for recording optical data of speckle movement and crack propagation images in the blasting process; the high-speed camera is used for recording optical data of speckle movement and crack propagation images in the blasting process; and the data processing device is used for tracking each mass point frame by frame according to optical data of the borehole peeping instrument, the optical endoscopic instrument and the high-speed camera, and determining the displacement of the mass point at each moment by maximizing a cross-correlation function. According to the scheme, the optical data of the rock mass in the blasting process can be accurately collected and recorded, and then through data processing, the rock mass smooth blasting mesoscopic process can be effectively and visually analyzed.

The invention provides a high-energy steam-water-ice three-phase jet mechanism research test device and test method, and belongs to the technical field of multiphase flow thermal hydraulic test devices. The problem that in the prior art, interference of water flowing and air convection on ice layer melting measurement is not considered, and consequently experimental data have remarkable system errors is solved. The device comprises a spray pipe assembly, a visual water tank, a water level and water temperature adjusting device, a measurement and data acquisition device and a steam supply device, the spray pipe assembly and the water level and water temperature adjusting device are both arranged in the visual water tank, and the spray pipe assembly comprises a spray pipe, a target distance adjusting structure and an ice block fixing clamp. The water level and water temperature adjusting device comprises a plurality of ice trays, the longitudinal section of each ice tray is of an inverted-L-shaped structure, and the measuring and data collecting device comprises a high-speed camera, a data collecting system, a weighing sensor, a pressure sensor and a plurality of temperature sensors. The device is mainly used for research tests of steam deicing.

The invention relates to the technical field of avalanche simulation experiments, in particular to a multi-dimensional adjustable avalanche dynamic process simulation experiment system and device and an analysis method. According to the technical scheme, the device comprises an object source sliding groove section fixedly installed at the top of an aluminum profile frame, a speed increasing sliding groove section is fixedly installed at the end of the object source sliding groove section, an erosion sliding groove section and a circulation sliding groove section are further fixedly installed at the top of the aluminum profile frame, and the speed increasing sliding groove section, the erosion sliding groove section and the circulation sliding groove section are in butt joint. According to the device, focused high-strength impact power is formed by injecting air at the directional injector, acts on the accumulated snow body avalanche object source push plate, is endowed with preset initial kinetic energy, drives the accumulated snow body to quickly move downwards along the preset sliding chute, and finally realizes accurate simulation of an avalanche scene; snow flows along the acceleration sliding groove section, the erosion sliding groove section, the circulation sliding groove section and the stacking bin, the high-speed camera is used for shooting an avalanche path, initial kinetic energy is given to an avalanche object source, and an avalanche scene caused by an earthquake is simulated.

The application provides a dynamic crack high-speed photography system and method for reducing interference in a blasting test, and belongs to the technical field of dynamic monitoring of blasting tests. A rock test piece is placed at the center of a reinforced concrete retaining wall, and a confining pressure device is arranged between the outer wall of the rock test piece and the inner wall of the reinforced concrete retaining wall. The upper surface of the rock test piece is covered with an impact-resistant flow guide protective cover. A horn-shaped flow guide pipe is arranged at the top of the impact-resistant flow guide protective cover in communication, the horn-shaped flow guide pipe is connected with a cylinder at the end, the cylinder penetrates through a protective baffle, and the high-speed camera is connected with a data processor through a connecting line. The high-speed photography method combining the flow guide protection structure, the light filtering measure and the double-view imaging can solve the problem that the dynamic crack of brittle materials such as rock and concrete is not clear in the blasting test due to the shielding of flying objects and the interference of strong light.

The invention relates to the technical field of vascular performance testing, in particular to a method for testing tensile force-strength-strain and crack generation speed of a blood vessel. Comprising the following steps: S1, performing non-uniform-size speckle paint spraying spot treatment on a blood vessel; s2, carrying out a tensile fracture test, recording a force-displacement curve through a computer, exporting peak tensile force and peak strain of the blood vessel, and carrying out high-speed shooting at the same time; s3, the tensile fracture process of the blood vessel is analyzed in real time according to the picture shot by the high-speed camera in the step S2, and the crack generation speed is deduced; S4, the sectional area of the tensile fracture surface of the blood vessel is calculated through Image J software; and S5, calculating the peak stress of the blood vessel according to the peak tensile force obtained in the step S2 and the blood vessel cross-sectional area obtained in the step S4.

The utility model discloses a kind of cavitation visualization test device for simulating the flow regime inside full-through flow pump, it is related to the field of pump test, include front guide vane body, improved impeller, impeller chamber, guide vane body, water outlet elbow, high-speed camera and pump shaft, by the geometric model of improved impeller and impeller chamber, the internal flow passage of test device is kept consistent with full-through flow pump, that is, equivalent to obtain the complete flow field of full-through flow pump, improved impeller and impeller chamber are manufactured using organic glass, to realize the visualization of its internal state.

The invention provides a free target dynamic response research system and method under the action of underwater near-field explosion, belongs to the technical field of underwater explosion experiments, and aims to improve the dynamic response acquisition precision of a free target under the action of underwater near-field explosion. The system controls release of a free target through an electromagnet, combines interaction of bubbles generated by electric spark discharge and the free target, and adopts a high-speed camera and a data acquisition device to synchronously capture a response process. The system comprises an electromagnet, a slotted iron rod, a positioning trough plate, a glass water tank, a light source, a high-speed camera and the like, and can realize accurate and synchronous data acquisition and non-contact parameter extraction. A YOLOv8 model is used for cylinder detection, displacement, speed and acceleration are calculated, and a bubble area in an image is segmented through a U-Net model. The system can provide a reliable platform for underwater explosion dynamics research, and further development of the field is effectively promoted.

The invention discloses an atomization field speed distribution measurement system and method, relates to the technical field of optical measurement and image processing, and aims to solve the problem that speed distribution measurement cannot be performed on an atomization field with relatively high atomization characteristic frequency by a laser measurement technology in the prior art. The system at least comprises an engine target injection unit, a high-speed camera, a stroboflash-free LED accent light, a long-focus large-aperture optical lens and an atomization field speed calculation unit. The high-speed camera is connected with the long-focus large-aperture optical lens and then is used for carrying out atomization shadow image shooting on an engine target injection unit; the atomization field speed calculation unit is used for receiving a plurality of target atomization field images shot by the high-speed camera, performing orthogonal distribution division on the plurality of target atomization field images to obtain a plurality of target areas, calculating pixel displacement among a plurality of target query areas, and determining atomization field speeds of the plurality of target areas; and the accuracy of atomization field speed measurement is improved.

The invention relates to a visual mold flow analysis experiment system and a use method, and belongs to the field of precision casting. Comprising a vertical core pressing machine or an angle type core pressing machine, a visual ceramic core mold, a light source, a high-speed camera and mold flow analysis software, according to the method, the virtual and actual visualization process of the high-solid-content ceramic slurry is realized by adopting a method of mold flow analysis, calibration of a mold with a temperature and pressure sensor and calibration of a transparent mold, so that a reliable scheme is provided for solving the defects of difficulty in mold filling, virtual connection, air trapping and the like of a wet ceramic core, rapid optimization and verification of the ceramic core mold are realized, and the production efficiency is improved. And the preparation difficulty and the development period of the ceramic core with a complex structure are effectively reduced.

The utility model relates to welding quality detection technical field, concretely for adaptive regulation's laser scanning weld joint identification device, including the casing, still include: for carrying out scanning identification of weld joint's laser scanner, the laser scanner sets up in one side of casing, for carrying out image acquisition of weld joint's high speed camera, high speed camera fixedly connects on one side outer wall of casing, adjusting assembly, drives adjusting assembly work for expanding the scanning range of laser scanner through high speed camera to weld joint image and gathers, for carrying out the adjustment of laser scanner laser beam divergence angle and spot size's beam expanding component, the utility model discloses the linkage design of adjusting assembly and beam expanding component realizes the adaptive regulation of laser scanner scanning range.

The utility model discloses a roll material divides and cuts appearance AOI development's identification device, including device main part still includes setting conveying assembly, first fixed bolster of fixed installation on device main part, adjustment assembly on first fixed bolster, install the mounting plate on adjustment assembly, fixed mounting high speed camera module on mounting plate, setting drive assembly on mounting plate, setting slide support on drive assembly, first gear on rotation connection in slide support. Through the staff to start relevant components, make that the cleaning roller body rotates, cooperate and go out air jet to spray out the air to the high speed camera module mirror surface and carry out the cleaning, form " mechanical wiping + airflow blowing " the dual cleaning mechanism, and this kind of collaborative cleaning mode not only can fully remove the impurity on mirror surface, still can avoid the impurity residual problem possibly caused by single cleaning mode, ensure the cleanliness of the high speed camera module's camera surface.

The utility model discloses a high-speed camera fixing device which comprises a camera body, a mounting seat and a fixing seat, the mounting seat is arranged at the bottom of the camera body, a butt joint assembly is arranged on the mounting seat, and the mounting seat is in butt joint with the interior of the fixing seat through the butt joint assembly. The butt joint assembly comprises a butt joint disc placed in the fixing base, a clamping assembly used for being clamped in the fixing base and an adjusting assembly used for moving the clamping assembly, and the butt joint disc is arranged at the bottom end of the mounting base. According to the utility model, through the arrangement of the butt joint assembly, the mounting seat on the camera body is stably mounted on the fixing seat through the butt joint assembly in a clamping manner, and the clamping manner is very rapid in mounting and dismounting; the problem that a high-speed camera used in the movie and television industry is frequently disassembled and a high-speed camera fixed through a flange bolt in the prior art cannot meet the requirement is solved.