30results about How to "Intuitive and accurate measurement" patented technology

The invention discloses a wave compensation measuring device, a measuring method and an applicationthereof in an ocean platform. The wave compensation measuring device comprises acompensation drive unit and a platform displacement measurement unit, the compensation drive unit comprises a rolling compensation drive device, a pitch compensation drive device, a heave compensation drive device and a drive connection rod; the connection between an upper measurement plate and a lower measurement plate is connected with six linear displacement sensors. The platform displacement measurement unit is arranged to simulatethe six degrees of freedom platform, whereinthe six linear displacement sensors correspond to the six servo cylinders of the six degrees of freedom platform; a compensation drive unit is arranged so as to conductwave compensations on theplatform displacement measurement unit, thus the wave compensation volume of theservo cylinders of the six degrees of freedom platform six is measured, the complex parallel connection machine program algorithm is converted into a mechanical news transmission mechanism, and the wave compensation measurement difficulty is reduced.

The invention relates to online monitoring technology for the parameters of electrons and atoms in the discharge channels of krypton Hall thrusters and provides an online monitoring device and method for the parameters of electrons and atoms in the discharge channel of a krypton Hall thruster to meet the demand for monitoring of ionization degrees in the discharge channel of the krypton Hall thruster. The online monitoring device comprises a light guiding pipe, an optical fiber and a spectrometer, wherein the sidewall of the discharge channel of the Hall thruster is provided with an axial testing slit; the light guiding pipe is inserted into the axial testing slit and used for guiding light in the discharge channel into the optical fiber; and the optical fiber is connected with the spectrometer. The spectrometer measures the intensities of krypton atom spectral lines with wavelengths of 805.95 nm, 785.48 nm, 760.15 nm and 758.74 nm, respectively; and the temperature of electrons and the density of krypton atoms are calculated according to the intensities of the krypton atom spectral lines. The online monitoring device and method provided by the invention are applicable to monitoring of the parameters of electrons and atoms in discharge channels.

The invention provides a safe and reliable water sump siltation measuring device which is low in investment and operating cost and capable of effectively reducing labor intensity of workers. The water sump siltation measuring device comprises a measuring ruler, a pull rope and a balance weight, and is characterized in that the measuring ruler is arranged on the top of a laneway where a laneway bottom plate is located. Pull rope lifting rings are arranged on the top of an inclined laneway of a water sump. A pulley is further arranged on the top of the water sump. One end of the pull rope is connected with a measuring sliding block, then passes the pull rope lifting rings and the pulley on the top of the inclined laneway of the water sump and finally is connected with the balance weight. The water sump siltation measuring device has the advantages of improving safety in the process of measuring siltation in the water sump, enabling workers to be capable of safely measuring the depth of the siltation in the water sump at a ventilating position, reducing damage of hazardous gas to human bodies, improving accuracy of the measuring value of the siltation in the water sump, enabling the workers to visually and accurately measure the depth of the siltation in the water sump through the siltation ruler and providing reliable parameters for four-protection work in rainy seasons.

The invention provides a method for measuring the outer spherical surface of a bearing, comprising the following steps: (1), selecting a standard part, measuring and marking the ball diameter D1 at the midpoint in the width direction of the standard part and the ball diameter D2 at the opposite corner; (2), Use the ball diameter D1 at the midpoint of the standard part to calibrate the first meter; (3), use the ball diameter D2 at the opposite corner of the standard part to calibrate the second meter, and the supporting force of the second meter measuring head and the support point points to the axis of the standard part; ( 4) Under the same conditions as the proofreading state of step (2) and step (3), use the first instrument to measure the ball diameter in the middle of the workpiece to obtain the deviation value D1', and then use the second instrument to measure the diagonal position of the workpiece Ball diameter, get the deviation value D2'; (5), use D1'‑D2', get the difference and compare it with the set spherical deviation. The invention is convenient and accurate in measurement, does not rely on the judgment experience of testing personnel, and ensures the requirements of product quality.

The invention relates to a dimensionality reduction monitoring method for random multidimensional vibration of an aircraft model, belonging to the field of aircraft wind tunnel model vibration monitoring, and relates to a dimensionality reduction monitoring method for multidimensional vibration applied to wind tunnel tests of strut and tail brace type aircraft models. In this monitoring method, the multi-dimensional vibration of the aircraft model is decoupled in the pitch plane and the yaw plane. Through the acceleration sensor installed in the multi-dimensional vibration monitoring system, the dimension reduction is expressed as the inertial observation force on two mutually perpendicular planes. The vibration characteristics of the selected random vibration are observed by reducing the dimensionality of the yaw plane, and the random multi-dimensional vibration monitoring of the aircraft model is realized. The monitoring method proposed by the invention improves the measurement accuracy, and the observation method has high feasibility and strong adaptability, and can be applied to rapidly developing aircraft wind tunnel simulation tests.

The invention relates to a visual experiment device of wall adhesion mechanical properties of hydrate and a working method of the visual experiment device. The visual experiment device comprises a circulating refrigeration system, a testing unit system, a microcosmic operation system and a microscopic observation system, wherein the testing unit system comprises a normal-pressure visual reaction device, a normal-pressure reaction groove, a liquid inlet, a liquid outlet and a testing unit element; the normal-pressure reaction groove is arranged on one side wall of the visual reaction device; the liquid inlet and the liquid outlet are formed in the side wall in a communicating manner; a visual window is further arranged on the side wall; the testing unit element is arranged in the normal-pressure reaction groove; the testing unit element comprises a solid metal block and transparent quartz frames; a plurality of transparent quartz frames are arranged on the solid metal block. By adopting the visual experiment device provided by the invention, generation, growth and deposition conditions of cyclopentane hydrate on a wall can be researched and monitored relatively well, and condition limitation that the hydrate only can be generated under a high-pressure environment is eliminated, so that an adhesion force of the cyclopentane hydrate generated on the wall is more accurately and directly measured.

The invention relates to a digital microscope wear scar measurement device and belongs to the field of four-ball friction testing machine detecting equipment. The digital microscope wear scar measurement device comprises a bottom plate seat, a supporting beam, a fine thread supporting rod, a working platform, a digital microscope and a cylinder oil box base, wherein the bottom plate seat is composed of a seat body and a bottom plate, and the working platform is matched with the bottom plate in a sliding manner and provided with a sliding limiting block; the cylinder oil box base is arranged on the working platform in a manner that the axial lead of the cylinder oil box base has an included angle of 54 degrees with the working platform; the fine thread supporting rod is fixedly connected with the seat body, and the lifting of the supporting beam is adjusted relative to the fine thread supporting rod through an embedded nut of the supporting beam; two strong magnet pieces are arranged in two counter bores in one side in the supporting beam; the optical axis of the digital microscope has an included angle of 36 degrees with the axis of the cylinder oil box base, and the digital microscope is vertically connected to a connecting arm of the supporting beam. The digital microscope wear scar measurement device ensures the accurate centering and high-precision fine-tuning focal length of the working platform and provides quick and accurate observation and measurement for the wear scar detection of four-ball friction testing machines.