14results about How to "Improve measurement performance" patented technology

The invention discloses a method and device for measuring the wind speed of a pipeline based on ultrasonic interferometry, and the method comprises the steps: calculating the phase difference between an uplink wave and a downlink wave through arranging a first ultrasonic transmitting unit, a second ultrasonic transmitting unit and an ultrasonic receiving unit, and employing same-phase and opposite-phase interference waveform data, thereby precisely calculating the wind speed in the pipeline; the device adopts a simplified hardware design, only one group of receiving circuit and ADC measuring circuit are needed, the cost is reduced, the reliability of the system is improved, each unit is stably mounted on the inner wall of the air duct through a fixing structure, and the fixing structure adopts a detection box form and adapts to various complex environments. The method and the device are suitable for the fields of industrial pipelines, laboratory ventilation systems and the like, have the advantages of high precision, low cost, high environmental adaptability and the like, and are widely suitable for airflow measurement and environmental monitoring.

The invention discloses an intelligent sensor acquisition system, which relates to the technical field of sensor acquisition and is realized by adopting a data acquisition module, a data processing module, a comprehensive correction optimization module, a communication module and a sensitivity adjustment execution module. The environment data comprises data related to illumination and temperature collected by a sensor, the collected environment data is preprocessed through the data processing module, and the corrected illumination intensity value and the power demand value are calculated and output through the comprehensive correction optimization module. And inputting the corrected illumination intensity value and the power demand value into a sensitivity adjustment execution module, performing feedback adjustment of multiple times of calculation, outputting an adjusted photosensitive element sensitivity value, and changing and influencing the corrected illumination intensity value and the power demand value and subsequent measurement values based on the feedback adjustment of the photosensitive element sensitivity value. And the collected and calculated data are displayed through the communication module.

The invention discloses a high-voltage reactor direct-current resistance measuring device integrated with a shielding device, and relates to the technical field of reactor direct-current resistance measurement. Comprising a shielding device and a measuring device. The measuring device comprises a direct current generator, a bypass resistor and a multi-order LC filter which are electrically connected with the high-voltage reactor, a current and voltage measuring circuit which is electrically connected with the bypass resistor and the multi-order LC filter, and an MCU control circuit which is electrically connected with the current and voltage measuring circuit. The shielding device is of a cover body structure and comprises internal insulating layers which are arranged layer by layer from outside to inside; the high-conductivity metal layer, the middle insulating layer, the high-permeability magnetic shielding layer and the internal insulating layer are detachably connected with the high-voltage reactor; the shielding device covers the measuring device and the high-voltage reactor, so that the measuring device and the high-voltage reactor are in a sealed state. The device can effectively suppress induced electric interference and reduce the influence of alternating current components on a measurement result, so that the accuracy and reliability of direct current resistance data are ensured.

The invention relates to glue filling equipment and a glue filling method for a fluxgate sensor. The glue filling equipment for the fluxgate sensor comprises a feeding assembly, a transfer assembly, a glue filling assembly and a discharging assembly, wherein the feeding assembly is used for conveying the fluxgate sensor to be filled with glue; the transfer assembly is used for receiving the fluxgate sensor conveyed by the feeding assembly, and the fluxgate sensor can rotate so as to transfer the fluxgate sensor; the glue pouring assembly is used for pouring a glue material into the fluxgate sensor on the transshipment assembly; and the discharging assembly is used for receiving the fluxgate sensor filled with the rubber material on the transshipment assembly. According to the glue filling equipment for the fluxgate sensor, automatic glue filling of the fluxgate sensor is achieved by arranging the feeding assembly, the transferring assembly, the glue filling assembly and the discharging assembly, the magnetic core is firmly fixed in the shell in a gluing mode, the magnetic core is prevented from shaking randomly in the shell, and the quality of the magnetic core is improved. And the good measurement performance of the fluxgate sensor can be maintained.

This invention discloses a method for detecting tobacco leaf flow rate in a tobacco processing line based on a 3D Time-of-Flight (TOF) camera and cross-sectional integration, and its application. It relates to the field of tobacco processing automation technology and includes the following steps: When the conveyor belt is unloaded, a 3D TOF camera fixedly installed above the conveyor belt acquires the reference height plane of the belt; wherein the optical axis of the 3D TOF camera is perpendicular to the bearing plane of the conveyor belt; when the conveyor belt is conveying material, real-time three-dimensional point cloud data containing both the material and the belt is acquired by the 3D TOF camera. This invention, through a 3D TOF camera and cross-sectional integration technology, achieves high-precision, non-contact, intrinsically safe, and highly interference-resistant detection of tobacco leaf flow rate in a tobacco processing line, and simultaneously acquires multi-dimensional process information such as material distribution and foreign matter agglomerates, comprehensively overcoming the problems of limited measurement accuracy, contact damage, radiation hazards, light sensitivity, and limited information in existing technologies.

The application provides a chuck assembly and a measuring device. The chuck assembly comprises a chuck, a plurality of support columns for supporting a wafer are arranged on one side of the chuck facing the wafer, and a plurality of air nozzles capable of forming an air cushion are arranged on the side of the chuck. The plurality of support columns form a plurality of concentric support rings with the rotation center of the chuck as the center. The plurality of air nozzles form a plurality of concentric air nozzle rings with the rotation center as the center. At least one support ring is arranged between any two adjacent air nozzle rings. In the embodiment of the application, the chuck assembly can effectively improve the anti-interference ability, the test stability, and the measurement accuracy.

The invention discloses a rural road crack detection device, and particularly relates to the technical field of road crack detection.The rural road crack detection device comprises a shell, a mounting plate is fixedly connected to the front end of the shell, a control box is fixedly mounted on the front portion of the left end of the shell, and a cleaning assembly is arranged on the front portion of an inner cavity of the shell; the lower end of the cleaning assembly and the rear portion of the right end of the shell are jointly provided with a laser measuring assembly. According to the rural road crack detection device disclosed by the invention, the hydraulic mechanism, the cleaning mechanism and the dust falling mechanism are arranged, so that large stones and dust on a rural road can be effectively cleaned, meanwhile, the dust falling amount is reduced, measurement errors caused by impurity interference can be effectively reduced, and the detection accuracy is improved. The precision and operation efficiency of the laser scanning technology are remarkably improved, accurate acquisition and recording of key data such as crack size, shape and distribution are ensured, and more reliable and detailed data support is provided for subsequent road condition evaluation, maintenance priority ranking and specific repair scheme formulation.

A portable drilling measuring instrument comprises a receiving rod, a mobile power source is arranged on the outer surface of one side of the receiving rod, the outer surface of the receiving rod and the same side of the mobile power source are connected with a wireless range finder in a magnetic attraction mode, the wireless range finder is provided with a panel and a laser lamp, and the light emitting direction of the laser lamp is parallel to the center line of the receiving rod. A fixed seat is arranged on the outer surface of the other side of the receiving rod, and an inclinometer is arranged on the fixed seat; a lighting camera, an inclinometer and an infrared distance meter are integrated, through modular combination of the measuring end, the measuring rod and the receiving end, measurement of parameters such as the drilling depth and the inclination angle can be completed at a time, real-time visual detection of the rock condition in a hole is synchronously achieved, and compared with a traditional single measuring mode, the working efficiency is improved, the personnel requirement is reduced, and the cost is reduced. The whole set of equipment is light in weight, easy to carry and suitable for rapid measurement of multiple scenes such as tunnels and mines.

The present invention discloses a calibration and repair management system for optical detection equipment and a management method thereof, and specifically relates to the technical field of optical detection equipment calibration, comprising the following steps: firstly, determining whether a current measurement error exceeds a standard through a standard test, and if so, calculating an environmental variation coefficient; then obtaining the current measurement error, the environmental variation coefficient and the number of calibrations, performing fuzzy reasoning, selecting an appropriate calibration strategy and executing calibration; if the measurement error still exceeds the standard after calibration, repairing the relevant optical elements or control components; and looping the above steps until the measurement error meets a preset standard; the present invention can dynamically adjust the calibration strategy, adapt to different environmental change conditions, reduce the need for frequent recalibration, ensure the measurement accuracy of the optical detection equipment under different environmental conditions, and can not only comprehensively correct the measurement error of the equipment in stable and dynamic environments, but also ensure the high accuracy and reliability of the equipment in long-term use through a cyclic calibration mechanism.

The invention relates to the field of force sensors, and discloses an orthogonal bidirectional force sensor of a variable cross-section cantilever structure and a measurement method, and the orthogonal bidirectional force sensor comprises a base, an elastic body, a first strain gauge group for detecting a first direction load component, a second strain gauge group for detecting a second direction load component, and a signal processing unit. The first direction is orthogonal to the second direction; the elastic body comprises a first cantilever and a second cantilever, the root of the first cantilever is fixed to the base, the tail of the first cantilever is perpendicularly connected with the side face of the root of the second cantilever, the tail of the second cantilever is a free end, the first strain gauge set is arranged on the first cantilever, and the second strain gauge set is arranged on the second cantilever. The first strain gauge group and the second strain gauge group are connected with the signal processing unit; the first cantilever adopts a first variable cross-section design. The invention has the advantages that the cross interference is reduced, the optimal balance between the sensitivity and the rigidity is realized, the space compactness and the integration degree are extremely high, and the manufacturing and calibration process is simplified.

The application discloses a gantry machine tool wall parallelism measurement method and system, and the method comprises the following steps: processing a plurality of groups of corresponding measurement surfaces on the two side walls of the gantry machine tool; processing a taper hole on one side of each group of measurement surfaces; adjusting the depth of a half-ball head screw inserted into a hanging pipe and the length of a dial gauge inserted into a connecting rod, so that the total length between the free end of the half-ball head screw and the measurement head of the dial gauge is adapted to the distance between the walls of the gantry machine tool; suspending the measurement system between the two walls of the gantry machine tool; tightly abutting the ball head of the half-ball head screw on the taper hole of the wall measurement surface, repeatedly hitting the corresponding measurement surface on the other side, obtaining the minimum value of the distance between the two measurement surfaces; moving the workshop girder trolley along the wall direction and measuring, obtaining a plurality of minimum value data; obtaining the parallelism data between the walls of the gantry machine tool according to the plurality of minimum value data; and adjusting the corresponding distance between the walls of the gantry machine tool according to the parallelism data until the parallelism requirement is reached.

The utility model discloses a low -voltage motor partial discharge monitoring devices based on TMR sensor, including TMR sensor, motor terminal block, U / V / W three -phase power supply wiring terminal, power line cable, motor winding, the power line cable 9 of U / V / W three -phase power supply wiring terminal connection on motor terminal block 3 is led out from the wiring terminal and first respectively passes through TMR sensor through -hole 10 again, passes through cable incoming wire hole 6 and is accessed motor winding. The external connecting device of TMR sensor includes signal enhancement amplifier, filter, ADC (A / DConverter) analog -to -digital converter, power carrier communication technology device, remote acceptance decoding device, motor partial discharge diagnosis and evaluation device. The integration of TMR sensor greatly promotes the detection sensitivity and anti -interference ability of low -voltage motor partial discharge signal, realizes higher precision monitoring. Secondly, with the aid of advanced signal processing technology and intelligent diagnosis algorithm, not only environmental adaptability is strengthened, also the ability of real -time monitoring is ensured.

The invention provides an amorphous alloy rotating shaft, which comprises a cylindrical elastic body, an amorphous alloy rotating shaft, an amorphous alloy rotating shaft, an amorphous alloy rotating shaft, an amorphous alloy rotating shaft and an amorphous alloy rotating shaft, and is characterized in that the elastic body is twisted and deformed under the acting force of transmission equipment; a strain area is arranged in the middle of the elastic body, and the strain area twists and deforms under the acting force of transmission equipment; the connecting end is used for connecting the rotating shaft with transmission equipment; the shaft sleeve is used for fixing the rotating shaft; wherein the elastic body, the connecting end and the shaft sleeve are all made of amorphous alloy materials, the amorphous alloy materials comprise Zr, Co, Cu, Nb, Al or Ti or Fe, and when Al or Ti is adopted, the atomic component percentage of the amorphous alloy materials is 0%-8%; when Fe is adopted, the atomic component percentage is 0-5%. Based on the scheme of the invention, the response performance of the prepared rotating shaft is improved on the basis of maintaining high strength, the sensitivity can be obviously improved, the total volume is greatly reduced, and the dual purposes of structure compactness and performance enhancement are realized.