10results about How to "Avoid recalibration" patented technology

The invention discloses an automatic quality-supplementing correction method and system for the unbalance amount of a fan, and the method comprises the following steps: collecting geometric parameters and material characteristics in a static state of the fan, and constructing a mechanical distribution model of the fan; the method comprises the following steps: collecting vibration signals and airflow characteristics in real time in a dynamic operation state, calculating the amount of unbalance in operation and decomposing the amount of unbalance into a primary component and a secondary component; on the basis of the unbalance prediction trend, determining a quality supplementing range, carrying out multi-point quality supplementing operation through a dispensing technology, and monitoring a quality supplementing effect by using an optical fiber sensor; and if the residual unbalance amount after quality supplementation still exceeds the standard, real-time compensation adjustment is carried out through the electromagnetic torque regulation and control module. Full-process automatic correction from static state to dynamic state and from quality supplement to fine adjustment is achieved, the method has the advantages of being real-time, accurate and intelligent, vibration and noise in the fan operation process can be effectively reduced, the operation stability of equipment is improved, and the service life of the equipment is prolonged.

The utility model relates to the technical field of numerical control lathe fixtures, in particular to a numerical control lathe accurate positioning fixture for musical instrument production, which comprises a base and connecting rods, a support plate is rotatably connected onto the base, a placing plate is connected onto the support plate, a plurality of mounting plates are mounted on the support plate, and two ends of each connecting rod are rotatably connected with the mounting plates. The four connecting rods are connected with extrusion blocks, bevel gear sets are arranged at the ends of the four connecting rods, the extrusion blocks are slidably connected into the containing plate, a motor is mounted on the mounting plate, one ends of the connecting rods at the front end and the rear end are connected with an output shaft of the motor, and the other ends of the connecting rods are in transmission connection with the connecting rods at the left end and the right end through the bevel gear sets. The connecting rods are driven by the motor to rotate and matched with the bevel gear set to enable the four connecting rods to synchronously drive the extrusion block to move towards the center, pressure values in all directions are detected in real time through the pressure sensor, driving is automatically cut off based on threshold judgment by the controller, closed-loop control over clamping force is achieved, self-centering clamping is completed, and the clamping efficiency is improved.

The invention provides a calibration method and system for a temperature and humidity sensor, and the method comprises the steps: obtaining a real-time temperature value of a calibration cavity and a real-time humidity value of the calibration cavity within a preset maintenance time, and obtaining a temperature driving signal and a humidity driving signal based on the real-time temperature value and the real-time humidity value, carrying out temperature and humidity adjustment on the calibration cavity based on the temperature and humidity adjustment result and obtaining real-time temperature and humidity values again until a preset temperature stable condition and a preset humidity stable condition are met, and collecting a first temperature and a first humidity of the chip; calculating four correction coefficients based on the real-time humidity value, the first temperature of the chip and the first humidity; and calculating a corrected humidity value based on the four correction coefficients, the chip first temperature and the chip first humidity, calculating a humidity difference value based on the real-time humidity value, and if the humidity difference value is smaller than or equal to a preset humidity difference threshold value, completing calibration. According to the calibration method of the temperature and humidity sensors, low calibration efficiency and poor calibration batch consistency are avoided, and automatic parallel calibration of the plurality of temperature and humidity sensors is realized.

The present invention provides an air conditioner performance test tool and an air conditioner performance test system, which relate to the field of air conditioner testing technology. The air conditioner performance test tool comprises an installation test bench, a first reflector and a second reflector. The first reflector is arranged below the installation test bench, and the second reflector is arranged on the test surface of the installation test bench, and the first reflector is arranged at an angle. Through the double reflection effect of the first reflector and the second reflector, the assembler on the installation test bench can observe the bottom side of the air conditioner to be tested through the observation port, eliminating the blind area of ​​the visual field, so that the bottom side of the air conditioner to be tested can be conveniently and accurately aligned with the assembly installation position, so that the air conditioner to be tested can be quickly assembled in place. Compared with the prior art, the air conditioner performance test tool provided by the present invention can accurately assemble the air conditioner to be tested, avoid the blind area of ​​the visual field, avoid repeated calibration, and improve the assembly efficiency.

The invention discloses a sensor data processing method and device, electronic equipment and a readable storage medium, and belongs to the technical field of data processing. The method comprises the steps of obtaining fisheye image data collected by a fisheye camera of a target vehicle, wherein the fisheye image data comprises image data of calibration cloth at a preset position of the target vehicle; acquiring first internal reference data of the fisheye camera, and determining target image coordinate data of the calibration cloth corner point based on the fisheye image data and the first internal reference data; acquiring space coordinate data of the calibration cloth corner point, and determining a first mapping relation according to the target image coordinate data and the space coordinate data; and determining external parameter data of the fisheye camera according to the first internal parameter data and the first mapping relation. According to the embodiment of the invention, the calibration process of the single equipment in the vehicle is simplified.

The utility model relates to the technical field of chain correction machines, in particular to a right vertical clamp mechanism of a chain correction machine, which comprises a clamp seat and is characterized in that the clamp seat is of a plate-shaped structure, a clamp pair is arranged in the center of the inside of the clamp seat, and a chain is arranged in the center of the clamp pair. The clamp base is integrally formed by a center supporting plate and side plates matched with the two sides of the center supporting plate in an associated mode, mounting grooves are formed in the centers of the tops of the side plates, connecting plates are arranged in the mounting grooves, an air cylinder mounting base is jointly arranged between the inner walls of the connecting plates, and a driving assembly is arranged at the top of the air cylinder mounting base; according to the utility model, the driving assembly and the inner and outer clamps are associated and matched, the air cylinder with smaller thrust is used for clamping the clamp with large acting force, and after a chain reaches a clamping position as required, the air cylinder pushes the inner clamp to enter the outer clamp, so that the inner clamp and the outer clamp are precisely combined in a sliding manner, the production efficiency is improved, and the repeated correction of a chain ring is effectively avoided.

The present invention discloses a distance adjustment device and a sizing device, wherein the distance adjustment device comprises a base, at least two groups of distance assemblies, a driving member and a transmission assembly. The base forms an installation space; at least two groups of distance assemblies are connected to the base and arranged in the installation space; the distance assemblies comprise a screw and at least one pair of slides; at least one pair of slides are connected to the screw, and when the screw rotates, the two slides in each pair of slides move toward or away from each other; the driving member is connected to one of the screws to rotate the screw; the transmission assembly is connected to the screw to link at least two screws. Through the above arrangement, when multiple groups of distance adjustment are required, it is only necessary to rotate the screw of one group of distance assemblies to change the distance between the two slides, so that the screws in the remaining distance assemblies can be rotated, and the distance between the slides therein can be changed proportionally, thereby avoiding the problem of repeated calibration caused by the independent adjustment of each pair of slides, and improving work efficiency.

The invention relates to an endoscope augmented reality error compensation method and device. The accuracy of AR fusion is significantly improved. The camera posture error caused by the rotation of the endoscope tube can be accurately compensated, so that the AR fusion error of the system is maintained at a low level. The application of the compensation model avoids the recalibration of the endoscope camera and is highly sensitive to the system positioning noise and the corner point recognition noise in the image. The method includes: (1) obtaining the observation value of the endoscope camera posture through endoscope calibration and external tracking; (2) calculating the optimal camera posture compensation matrix in the current operation space by combining the observation value and the estimated value of the endoscope camera posture using the least squares method.

The present application relates to the field of agricultural machinery safety perception and intelligent early warning technology, and particularly relates to a silage harvester living body detection and early warning method fusing thermal infrared and visible light, wherein a thermal infrared camera and a visible light camera are installed on the roof of the harvester, calibration parameters and spatial mapping relationships are obtained in advance, dual-mode images of the front work area are collected in real time, pre-stored parameters are called to perform synchronous matching and spatial registration, the dual-mode image pair is input into an RGBT-YOLO network based on the improvement of YOLOv11, temperature features are extracted through the thermal infrared branch, texture features are extracted through the visible light branch, and the class, position and confidence of the living body target are output after cross-modal fusion and lightweight detection, when a person or an animal enters a preset dangerous area in front of the header and continuously meets the alarm conditions, an audible and visual alarm device is driven to send an early warning signal, and the problems of insufficient consideration of dual-mode image registration, feature-level fusion detection and early warning control closed loop in the working scene of the dangerous area in front of the silage harvester at the present stage are solved.

The utility model discloses a filling machine for lubricating oil production relates to lubricating oil processing technical field. The utility model discloses a base and the casing of fixed connection at the top of base, the top of base is provided with a plurality of oil pipes, the base bottom is fixedly connected with a plurality of support columns, the casing inner wall is fixedly connected with the support plate no.