7results about How to "No drift" patented technology

The invention discloses a treadmill with a force measuring function, and belongs to the technical field of sports and fitness equipment. The problems that in the prior art, measurement experiment data are tedious, and calibration needs overall inspection are solved. According to the technical scheme, a frame is installed on a bottom plate, a handrail is installed at the front end of the frame, a treadmill body is arranged in the frame and does not make contact with the frame, and four balance structures are arranged between the treadmill body and the frame and distributed in a rectangular shape; the measuring end of the balance structure is connected with the treadmill body through a spherical hinge mechanism, and the mounting end of the balance structure is fixed to the frame. In the force measurement process, the force sensor has excellent linearity and sensitivity, keeps long-term stability in an extremely wide measurement range, can precisely measure each quick action, has high resolution and reliability, has relatively high sensitivity, is high in overload resistance, long in service life and free of aging, and meanwhile, reduces the equipment detection cost and reduces the maintenance difficulty.

The invention relates to the field of electrical equipment testing tools and instruments, and discloses an easy-to-adjust multifunctional partial discharge detection extension rod which comprises an insulating rod, the top of the insulating rod is fixedly connected with a mounting block, a spherical joint is rotatably arranged in the mounting block, and the top of the spherical joint is fixedly connected with a mounting mechanism. A limiting mechanism is arranged in the mounting block, the limiting mechanism comprises a rubber block, the exterior of the rubber block is slidably connected to the interior of the mounting block, a limiting spring and an adjusting rod are fixedly connected to the two sides of the exterior of the rubber block, and the end, away from the rubber block, of the limiting spring is fixedly connected to the interior of the mounting block. According to the device, the probe is allowed to freely rotate in all directions through the arrangement of a rubber block and a limiting spring, a user can manually adjust a joint according to requirements, the probes of different types or specifications can be rapidly replaced according to requirements through the arrangement of a threaded column and a limiting plate, and the practicability of the device is greatly improved.

The application discloses a three-dimensional reconstruction method and system based on frequency domain phase consistency and multi-cue fusion, and relates to the technical field of three-dimensional reconstruction. The method comprises the following steps: collecting images of a target semiconductor packaging structure, forming a focus stack, setting analysis parameters, extracting four-dimensional depth cues from three dimensions of a frequency domain, a time domain and a space domain in parallel, obtaining a four-dimensional cue matrix, tracking time sequence peaks of each cue in the four-dimensional cue matrix pixel by pixel, performing sub-pixel fitting, fusing the fitted four-dimensional cues through Bayesian maximum a posteriori probability estimation, generating a coarse depth map and a confidence map, performing Markov random field space regularization optimization to generate an optimized depth map, adaptively smoothing the optimized depth map based on the fused confidence map, and generating a three-dimensional depth map and a full-focus image. The application can provide an efficient, stable and engineerable new technical path for three-dimensional online detection of wafer-level advanced packaging.

This invention discloses a grating galvanometer device and its control system and method. The grating galvanometer device includes: a grating galvanometer motor with a motor output shaft; a galvanometer clamp mounted on the end of the motor output shaft for clamping and fixing a laser reflector; a triangular chuck-type quick clamp with one end coaxially fixedly connected to the motor output shaft; a DD motor with a motor output shaft, the other end of which is rigidly connected to the quick clamp to allow the motor output shaft to rotate coaxially with the galvanometer; and a motor bracket for supporting the grating galvanometer motor and the DD motor. This invention uses real-time feedback data from the DD motor as a precision benchmark, enabling the acquisition, modeling, and iterative correction of short-cycle errors during the operation of the galvanometer motor. This solves the short-cycle error problem existing in low-resolution grating galvanometer motors, achieves real-time correction of the galvanometer motor's angle positioning error, improves the accuracy and consistency of laser processing, reduces equipment hardware costs, and enhances adaptability to various working conditions.

This invention discloses a graphene fiber-reinforced flexible heating composite material, its preparation method, and its applications. The composite material comprises an integrated flexible heating base layer formed by combining a fiber cloth with in-situ grown graphene with a thermoplastic resin. The graphene grows in situ on the fiber surface, forming a continuous and uniform conductive heating network, which, together with the thermoplastic resin matrix, constitutes a non-layered, integral structure. The composite material provided by this invention has a thinner structure, more uniform heating, and high interfacial bonding strength. It also possesses excellent flexibility, high structural strength, weather resistance, and washability, solving the technical pain points of existing flexible heating materials such as uneven heating, poor adhesion, and low structural strength. It can be widely used in industrial equipment heating and de-icing, low-temperature flexible bonding insulation heating, household heating, medical hot compresses, outdoor weather-resistant heating, and electric heating tube insulation, among other fields.

This invention provides a reference threshold setting device for an axle counting system, comprising: a main control unit for collecting button operation information and generating a safe reference threshold setting command; and a method for setting a reference threshold for an axle counting system, comprising: the axle counting board collecting detection parameters of axle counting detection points in real time, and the detection parameters when there are no vehicles within a specified range of the axle counting detection points being the target object for setting the reference threshold; the method further comprising the setting device sending a reference threshold setting command to the axle counting board through the axle counting host bus or the axle counting board interface. Compared with the prior art, this invention has the following advantages: it uses software commands to set the current no-vehicle detection parameters as the reference threshold, eliminating the need for hardware debugging of the reference threshold, greatly reducing the workload of axle counting system debugging, and making on-site debugging of axle counting equipment more convenient; by changing the reference threshold adjustment method to software adjustment, there will be no parameter drift or hardware damage.

The invention discloses a buried gas pipeline joint nondestructive testing technology, and belongs to the technical field of pipeline nondestructive testing, the buried gas pipeline joint nondestructive testing technology comprises four core steps of preparation before detection, ultrasonic phased array detection, X-ray detection, combination determination and result output, and by customizing a test block calibration device, detection parameters are optimized according to pipeline specifications, and the pipeline joint nondestructive testing efficiency is improved. An ultrasonic phased array method and an X-ray method are combined for detection, and a standardized judgment rule is established; and meanwhile, the matched special auxiliary device comprises an ultrasonic phased array detection auxiliary device and an X-ray machine positioning device which are respectively used for fixing the probe and the X-ray machine, so that accurate detection positioning and tight probe fitting are ensured. According to the method, the defect recognition rate is larger than or equal to 98%, the defect position error is smaller than or equal to + / -2 mm, the method is matched with De63-De355 full-specification PE pipeline joints, operation is convenient and fast, efficiency is high, various common defects of the joints can be comprehensively recognized, quantitative analysis and qualification judgment are achieved, and reliable technical guarantee is provided for buried gas pipeline joint quality control and safe operation.