13results about How to "Realize dynamic measurement" patented technology

The invention discloses a dynamic monitoring system and method for a subway ballast bed stripping model test. The dynamic monitoring system comprises an exciting force measuring device, a contact surface tension measuring device, a displacement measuring device and a strain measuring device, and the exciting force measuring device measures exciting force through a vibration exciter and a tension and pressure sensor. The contact surface tension measuring device realizes tension measurement of a track bed-segment contact surface position through a cross beam type mechanical force measuring device and a fixed steel wire. The displacement measurement device achieves displacement measurement of a duct piece structure, displacement measurement of a ballast bed structure and ballast bed stripping deformation measurement through a springback type differential variable pressure displacement sensor, a duct piece displacement measurement platform and a ballast bed displacement measurement platform. The strain measurement device achieves ballast bed-duct piece contact surface strain measurement through strain gauges arranged on the duct piece structure. According to the invention, dynamic monitoring of various data in a ballast bed stripping model test can be realized, and effective data support can be provided for ballast bed stripping disease mechanism research.

The utility model discloses a winding device which comprises two supporting seat assemblies, the two supporting seat assemblies are oppositely arranged in the left-right direction, each supporting seat assembly comprises two support plates, the two support plates are oppositely arranged in the front-back direction, the bottoms of the support plates are fixedly installed on a bottom plate, a rotating rod assembly is installed between the two supporting seat assemblies, and the rotating rod assembly comprises a sleeve body. The sleeve body is located between the two support plates of the same supporting seat assembly and can move up and down along the side walls of the support plates, the bottom of the sleeve body abuts against a spring, and the bottom of the spring abuts against the top of the bottom plate. A rotating rod is connected to the inner side of the sleeve body through a bearing and can rotate along the axis of the rotating rod, a winding drum is installed on the outer wall of the rotating rod, the rotating rod penetrates through the winding drum, and the winding drum is located between the two supporting base assemblies. According to the winding device, the weight of fabric is directly measured in the winding process, and the accuracy is high.

The application relates to a wheel-rail position relationship measurement method and system based on a rolling vibration test bench of a rail vehicle, computer equipment and a medium. The method comprises the following steps: S1, measuring displacement variation of each of a wheel and a rail in a movement process; S2, calculating lateral displacement and a plunge angle of each of the wheel and the rail based on the displacement variation; S3, calculating a flange gap of the wheel and the rail in the movement process based on the lateral displacement of each of the wheel and the rail; and S4, when the flange gap is greater than a preset value, calculating equivalent taper between the wheel and the rail based on the flange gap. The method can accurately measure the wheel-rail position relationship through the rolling vibration test bench of the rail vehicle.

This invention provides a dynamic beam quality measurement device based on a fast deflecting mirror and a microlens group, comprising a first fast deflecting mirror, a second fast deflecting mirror, a microlens group, a focusing lens, and a charge-coupled device (CCD) camera arranged sequentially along the optical path. The first fast deflecting mirror reflects the laser beam to be measured onto the second fast deflecting mirror, and the second fast deflecting mirror reflects the laser beam modulated by the first fast deflecting mirror to the centers of different microlenses within the microlens group. The microlens group consists of multiple microlenses. The focusing lens is arranged in the transmission optical path of the microlens group, and the CCD camera is arranged at the focal point of the focusing lens in the transmission optical path of the focusing lens. In this invention, a single image acquired by the CCD camera can capture the distribution of four laser beam spots focused by lenses with different focal lengths. Combined with the high-speed deflection of the two fast reflecting mirrors, dynamic measurement of laser beam quality can be achieved while ensuring measurement accuracy.

The utility model relates to the technical field of cooking machines, and discloses a weighing device for a cooking machine. The rotating shaft is arranged on the middle fixing plate; the bottom fixing plate is arranged at the bottom of the middle fixing plate, and a preset distance is formed between the bottom fixing plate and the middle fixing plate; the middle fixing plate is connected with the weighing end of the weighing sensor, so that all parts forming the weighing mechanism are independently placed on the weighing end of the weighing sensor, the weighing sensor can adopt a parallel beam structure sensor during application, and the sensor has the advantages of high measurement precision, simple structure and four-corner pressure deviation compensation capability, and is convenient to use. And the power output part is arranged on the middle fixing plate, the weighing sensor can weigh the middle fixing plate, output of rotating power is provided for the rotating shaft, the rotating power is used for driving an external feeding device, and dynamic measurement is also achieved.

The present invention discloses a dynamic detection device with a pressurized rotating device, characterized in that it includes: a rotary pressurizing device, a counterweight decompression device, a rotary drive device, and a joint surface measuring mechanism. The rotary pressurizing device includes: a first loading cylinder, an adjusting screw, a movable roller, a second loading cylinder, a pressurizing device mounting frame, a loading arm, a loading force sensor measuring device, a floating pressure head, and a rotary cylinder. The counterweight decompression device includes: a chain, a sprocket, a counterweight block, a limit bracket, a mounting seat, a connecting plate, a guide column, and a guide sleeve. The rotary drive device includes: a reduction motor, a torque sensor, a rotating axis, and a flexible plug-in shaft. The joint surface measuring mechanism is located below the rotary drive device, and includes: a reference plate, a pneumatic pen-type sensor, and a mounting plate. The present invention solves the problem that when mechanical parts are working, there is a deviation between the measured value and the true value, and the selected gasket is too small, resulting in excessive internal clearance after assembly.

The invention provides a secondary image deviation measurement system, and relates to the technical field of measurement. The secondary image deviation measuring system comprises a light source which is arranged on the first side of the glass to be measured and is used for emitting light; the image position obtaining device is arranged on the second side, opposite to the first side, of the glass to be detected, the image position obtaining device and the light source are coaxially arranged, and the light source forms a main image and an auxiliary image on the image position obtaining device through the glass to be detected; the image position obtaining device is used for determining the main image coordinates and the auxiliary image coordinates and obtaining an auxiliary image deviation value according to the main image coordinates and the auxiliary image coordinates. Therefore, the secondary image deviation measurement system provided by the invention can realize automatic identification of the secondary image deviation value quickly and accurately, can realize dynamic measurement, and is high in automation degree, convenient to use and high in measurement accuracy.

The invention belongs to the technical field of gas detection, and particularly relates to a gas concentration measurement method and system based on adaptive wavelength. The measurement method comprises the following steps: obtaining a waveform curve of a to-be-measured gas absorption signal; if the current waveform curve is distorted, the to-be-detected gas is scanned again after the current scanning interval is widened until the newest waveform curve is not distorted, and the newest waveform curve is subjected to convolution processing to obtain a second reasonable curve; and if K3 continuous sampling points greater than a third set threshold exist in the absorption interval of the second reasonable curve, recording the current second reasonable curve as a third reasonable curve, and calculating the current concentration of the gas to be detected according to the third reasonable curve, on the contrary, the scanning interval corresponding to the current second reasonable curve is narrowed, and then the to-be-detected gas is scanned again. According to the invention, high-efficiency and accurate concentration measurement can be carried out on to-be-measured gases with different concentrations.

The present invention relates to the field of building material testing equipment, in particular to a steel bar weight deviation detector. It aims to solve the problem that the steel bar weight deviation detection method in the prior art is simple and single in targeting. The present invention includes a base, a weighing mechanism is installed on the base, and a diameter detection unit is slidably installed on the base. The weighing mechanism includes an elastic base, a driving steel bar support unit, a mobile steel bar support unit and a fixed steel bar support unit installed on the elastic base, and the driving steel bar support unit, the mobile steel bar support unit and the fixed steel bar support unit are provided with steel bar support through holes with the same shape and position. The mobile steel bar support unit is provided with a moving pair connection between the elastic base, and the number of through holes is 5, which are distributed in a circular array. The advantages are: the weight, coarseness and uniformity, curvature and other indexes of the sample can be measured simultaneously, and the installation and disassembly of the test piece are convenient.

The present invention discloses a variable acceleration motion simulation test platform for turbine machinery foundation, including a fixed seat, a positioning plate, an oscillation table, a base, an elastic support, and a power assembly. The base is fixed to the ground, and the oscillation table is arranged horizontally above the base at intervals. One side of the oscillation table is connected to the support seat on the base through a bearing, and the other side is connected to the upper surface of the base through an elastic support. The power assembly is installed on the base and connected to the side of the oscillation table close to the elastic support. The positioning plate and the fixed seat are arranged in sequence from bottom to top. The bottom surface of the positioning plate is connected to the upper surface of the oscillation table through bolt one, and the bottom surface of the fixed seat is connected to the upper surface of the positioning plate through bolt two. The turbine machinery is installed on the fixed seat through bolt three. A motion simulation method thereof is also provided. The present invention provides experimental test support for conducting research on the rotor dynamic characteristics of turbine machinery operating on the basis of variable acceleration.

The invention relates to an elevator guide rail detection management device and method. The elevator guide rail detection management device comprises at least two measuring vehicles, each measuring vehicle is provided with a mounting seat, and the mounting seats are provided with plumb line mounting frames; the pressurization stabilizing mechanism is used for driving the two measuring vehicles to have a movement trend of being far away from each other, so that the two measuring vehicles are pressed on the elevator guide rail respectively; the first driving mechanism is arranged on the measuring vehicle and used for driving the measuring vehicle to move in the extending direction of the elevator guide rail; the at least two vertical detection mechanisms are respectively attached to the two mounting seats of different measuring vehicles; the power supply device is used for supplying power; a controller; according to the invention, the measuring vehicle with the self-driving mechanism is designed to replace an elevator car driving mode, so that the change of the measuring precision caused by the shaking of the elevator car is avoided; and the self-control type driving mechanism has higher accuracy and degree of freedom, the position needing to be measured can be adjusted at will, and the possibility is provided for precise measurement.

The invention provides a method and device for measuring a liquid jet gas-liquid interface in a closed environment, and relates to the technical field of measurement, and the method comprises the steps: obtaining the position of an ultrasonic detector in a target closed environment, and a reference ultrasonic signal and a target ultrasonic signal detected by the ultrasonic detector in the closed environment; the reference ultrasonic signal and the target ultrasonic signal are ultrasonic signals collected when no jet flow exists in the target closed environment and when jet flow exists in the target closed environment; acquiring a scattering signal and corresponding scattering information based on the reference ultrasonic signal and the target ultrasonic signal; matching a target scatterer size corresponding to the scattering information and the position from a pre-constructed scattering information database in which different scattering information, different positions and corresponding scatterer sizes are stored; the size of the target scatterer is the size of the scatterer generating the jet flow. According to the invention, dynamic measurement of the jet flow gas-liquid interface in the closed combustion chamber can be realized.

The invention provides a dynamic ion beam distribution measuring system and measuring method in a vacuum system, and the system comprises a plurality of Faraday ion receivers which are installed in any Faraday cylinder; the signal acquisition device is arranged on the back side of the umbrella sheet and is used for receiving a sampling signal acquired by the Faraday ion receiver in real time; the signal transparent transmission device comprises a signal receiving and transmitting module and a signal interface module, the signal receiving and transmitting module and the signal interface module penetrate through the vacuum cavity to keep communication connection, the signal interface module is used for communication connection of an external host, and the signal receiving and transmitting module keeps wireless communication connection with the signal acquisition device; a sampling signal sent by the signal acquisition device through wireless communication is received and transmitted to the signal interface module, and the signal interface module forwards the sampling signal to an external host, so that real-time dynamic ion beam distribution measurement is realized. Through an ingenious wireless communication transmission scheme, vacuum obstacle avoidance is overcome, and dynamic measurement of ion beam distribution in a vacuum system can be realized in real time.