10results about How to "Synchronous acquisition" patented technology

The invention discloses a sliding bearing-rotor system stability test system and method under an impact load, and relates to the field of rotating machinery test in mechanical engineering. According to the technical scheme, different types of impact loads are applied through a vibration acceleration platform, and starting, stopping or external impact force in actual working conditions is simulated. In the testing process, a high-precision sensor and a multi-channel acquisition board card are used for monitoring the vibration characteristic and the rotating speed of the system in real time, it is guaranteed that signals of different positions and types can be synchronously acquired, and comprehensive system state information is provided. Then, in combination with time domain and frequency domain analysis technologies, key features are extracted from mass data by applying an advanced Fourier transform algorithm, the resonant frequency, modal characteristics and potential fault modes of the system are identified, and accurate evaluation of the stability of the system is realized. Experimental results show that the real-time monitoring and analysis method can effectively improve the stability test precision of the sliding bearing-rotor system under the impact load, and provides powerful technical support for engineering application. The method is used for evaluating the stability of the sliding bearing-rotor system under the impact load.

The invention relates to the technical field of laser welding of micro-fluidic chips, in particular to a method and device for laser welding of a micro-fluidic chip. The method for laser welding of the micro-fluidic chip comprises the following steps: positioning the micro-fluidic chip, acquiring a local picture of the micro-fluidic chip through a visual detection module, controlling two end parts to automatically adjust positions on a space coordinate axis, and ensuring that a cover plate is tightly attached to the micro-fluidic chip; and the target heating light spot is aligned with the molten pool part, so that the matching degree of a real-time crystal phase image formed on the molten pool part and a target crystal phase image is larger than a set value, the welding procedure is completed in an automatic control and detection mode, and finally annealing is conducted to complete welding. The welding method is high in automation degree, laser welding is conducted through the laser welding head module, heating is fast, efficiency is high, and accurate and automatic welding is achieved by judging a crystal phase image.

The application provides a multi-finger tactile acquisition device, comprising: a plurality of finger tactile sensing modules and a wrist centralized processing module; the finger tactile sensing module comprises a first wearable base corresponding to a finger tip, a composite silica gel force transmission unit connected with the first wearable base for conducting finger tip contact force, and a finger tip tactile sensing unit for sensing finger tip contact force; the wrist centralized processing module comprises a second wearable base corresponding to a wrist and a processing mainboard, the processing mainboard is packaged in the second wearable base, the processing mainboard is in communication connection with the finger tip tactile sensing unit of the plurality of finger tactile sensing modules through a customized cable, a star-shaped topology network is formed to receive data of finger tip contact force; and the processing mainboard is used for transmitting the data of finger tip contact force to other electronic devices. The problems of multi-channel data acquisition, real-time processing, stable power supply, neat wiring and comfortable wearing are solved, and the overall hand tactile information in complex operation can be comprehensively, synchronously and efficiently acquired.

The invention discloses a wide-range static and dynamic ground feature information synchronous acquisition technology, which comprises a space remote sensing platform and a remote sensing load. The remote sensing load is composed of an optical machine lens and a focal plane assembly. The focal plane assembly is composed of an area array CMOS detector and an imaging circuit. And the area array CMOS detector is provided with 3-9 multispectral optical filters and one panchromatic optical filter. The remote sensing load is installed on the remote sensing platform, and when the remote sensing load flies relative to the earth along with the remote sensing platform, the ray machine lens converges light of ground objects to the area array CMOS detector. The area array CMOS detector converts an optical signal of a ground object into an electric signal to form a digital image. And the imaging circuit processes the digital image to form a ground object static multispectral strip picture and a dynamic panchromatic video, so that large-range synchronous acquisition of static and dynamic ground object information is realized. The technology solves the problems that traditional handheld equipment is low in collection efficiency, and traditional aerospace remote sensing cannot synchronously collect static spectrum information and dynamic video information.

The application relates to the field of shield model testing and monitoring, and particularly discloses a slurry balance shield model testing device, which comprises a soil bin, a counterforce frame fixed to one side of the soil bin, a moving cabin capable of reciprocating sliding between the soil bin and the counterforce frame, and a multi-source sensor system. The moving cabin comprises a slurry cabin and an air cushion cabin which are independent of each other. A cutter head is arranged at the front end of the slurry cabin. A centrifugal pump is connected in series to a slurry inlet pipeline and a slurry discharge pipeline of the slurry cabin. The multi-source sensor system comprises a torque sensor connected to the cutter head, a pressure sensor connected to the slurry cabin, a pump body acceleration sensor connected to the centrifugal pump, and a condenser microphone arranged in the soil bin and facing a tunneling face. The device can simulate the coupling process of shield tunneling and slurry circulation under laboratory conditions in a high simulation mode, and can realize the synchronous and real-time collection of key multi-source physical parameters of cabin pressure, cutter head load, pumping vibration and tunneling face acoustic signals, thereby providing technical support for in-depth research on the evolution mechanism of complex working conditions such as slurry balance shield lagging.

The invention provides a synchronous scanning system and a synchronous scanning method. The synchronous scanning system comprises an accelerator, a lifting platform, a linear array detector, a motion controller, a field programmable gate array (FPGA) and a data processing unit. According to the scanning system provided by the invention, the starting position, the sampling position and the ending position of sampling can be accurately controlled in each scanning process, the problem of inconsistent sampling caused by speed change or pulse trigger errors can be avoided, the sampling position, accelerator beam output and linear array detector acquisition are ensured to be strictly synchronous, and the sampling accuracy is improved. And the position precision and consistency of multiple times of scanning are ensured. Furthermore, on the basis, the synchronous scanning method provided by the invention can ensure the consistency of multiple scanning positions in the process of multiple loading scanning, and through the micro linear array detector and multiple scanning, the original larger detector channel spacing can be indirectly and greatly reduced, and a scanning image with higher resolution can be generated.

The application provides a multifunctional testing device for simulating a real use scene of a paper diaper, and relates to the technical field of paper diaper performance detection. The multifunctional testing device comprises a base, a large arm connected to the base, a first rotating component arranged on the large arm, a small arm rotatably connected to the large arm through the first rotating component, a turning flange connected to the small arm, a second rotating component arranged on the turning flange, a baby posture simulation model connected to the output end of the second rotating component, a liquid simulation unit in communication with the baby posture simulation model through a liquid pipeline, a temperature control unit connected to the liquid simulation unit, a gas simulation unit arranged in the baby posture simulation model and used for outputting gas, a sensing unit arranged on the surface and / or inside of the baby posture simulation model, and a control unit electrically connected to the first rotating component, the second rotating component, the liquid simulation unit, the temperature control unit, the gas simulation unit and the sensing unit respectively.

The invention discloses an automobile switch operating force testing method, which comprises the following steps of: (1) pressing a key, monitoring force and stroke data in real time, recording, storing and generating a data sequence when the operating force is greater than or equal to a preset minimum force Fmin, and stopping when the operating force exceeds a threshold value or is pressed in place; (2) traversing the force data sequence, identifying extreme points and storing the extreme points into an array, processing adjacent extreme points of the same type, and calculating a force peak-valley difference value; (3) traversing the array set, calculating a force peak valley difference value of adjacent different types of extreme points, comparing the difference value with a preset threshold value, and screening an effective difference value to form an array; (4) sorting the difference value array, if the difference value is invalid, judging that the curve is invalid, and if the difference value is invalid, judging that the curve is invalid, otherwise, judging that the curve is invalid. If yes, storing the peak-valley extreme point data into a two-dimensional array, and forming a force-stroke relation array in combination with the stroke data; according to the method, through multi-condition filtering and peak valley detection, automatic and accurate testing of the automobile switch operating force is achieved, and the problems that an existing method is poor in interference resistance and prone to misjudgment are solved.

The application relates to a data collection method and device, computer equipment and a computer readable storage medium. The method comprises the following steps: in response to a timer interrupt instruction, entering a timer interrupt program, starting a clock counter and recording an initial count value; in the timer interrupt program, starting an electrocardiogram measurement module, a heart sound measurement module and a blood pressure measurement module according to a preset order according to preset assembly instructions, and measuring state data corresponding to a user; when the current count value of the clock counter reaches a threshold value, closing the electrocardiogram measurement module, the heart sound measurement module and the blood pressure measurement module according to the preset order based on the corresponding assembly instructions to obtain a target data set; based on the initial count value and the current count value, a data collection duration is obtained, and based on the target data set and the data collection duration, target state data is obtained. The method can realize high-precision synchronous collection of electrocardiogram data, heart sound data and brachial artery pressure data.

The invention discloses an in-situ attenuated total reflection Fourier transform infrared spectrum detection method based on microwave heating, and belongs to the technical field of spectrum detection and analysis. According to the method, a design strategy that microwave heating and an infrared spectrum system are arranged separately is adopted, and a high-refractive-index infrared reflection crystal is used as a unique coupling detection area, so that real-time infrared spectrum monitoring of a reaction system is realized. The detection method disclosed by the invention is particularly suitable for in-situ monitoring of hydrogenation, cracking and conversion reaction of an oxygen-containing or unsaturated substituent compound on a furan ring or a benzene ring, and is compatible with microwave and catalytic reaction mechanism research, material interface reaction analysis and spectroscopic characterization of a biomass derivative conversion process; the method has the advantages of being accurate in temperature control, high in response speed, high in signal stability and good in data repeatability, dynamic spectrum tracking can be conducted on a complex reaction system, a traditional external heating detection mode is compatible, and the space matching degree and the time resolution of microwave field in-situ characterization are remarkably improved.