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Device for measuring entity appearance by micro-inertial navigation

A measurement device and micro-inertial navigation technology, which is applied to measurement devices, navigation through velocity/acceleration measurement, instruments, etc. Small size and convenient operation

Inactive Publication Date: 2008-08-20
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its outstanding disadvantages are bulky, complicated equipment and high cost.
therefore not suitable for promotional applications

Method used

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  • Device for measuring entity appearance by micro-inertial navigation
  • Device for measuring entity appearance by micro-inertial navigation
  • Device for measuring entity appearance by micro-inertial navigation

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Experimental program
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Embodiment Construction

[0036] The structure of the present invention is shown in Figure 1. The pressure sensor in the probe is sensitive to the position data representing the expansion and contraction of the probe; the gyroscope in the micro-inertial measurement unit is sensitive to the three axial rotational angular velocity data of the measuring device, and the accelerometer is sensitive to the measurement Three axial acceleration data of the device. The navigation computer collects the data of the probe and the micro-measurement unit for calculation, and finally obtains the position vector of the point on the solid surface on the fixed navigation coordinate system, and stores the data in the data memory. There is a virtual instrument coordinate system fixedly connected with it on the device, with its geometric center as the coordinate origin, and each coordinate axis is fixedly connected with the device and moves together with it.

[0037] Described micro-gyroscope selects fiber optic gyroscope, ca...

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Abstract

The invention discloses a substance shape measuring device with micro inertial navigation, which comprises a probe group for shape data collecting, a strapdown inertial navigation system and a data storage; the probe group for shape data collecting consists of a row of stretchable probes with pressure sensors, the strapdown inertial navigation system consists of a micro inertia measuring unit and a navigation computer, implements alignment and then measures one surface of a substance, and further implements the alignment and the measurement till the end, and the substance shape is computed by processing software. The substance shape measuring device with micro inertial navigation has free movement, can measure the internal and external shape of the substance with a convenient posture, and has small volume, convenient operation, low cost and easy application generalization. The substance shape measuring device with micro inertial navigation is applicable for the accurate measurement of the size, shape and mutual position of three-dimensional complicated substances in the field of machinery, construction, aviation, spaceflight, war industry, automobiles and commercial manufacture, etc., particularly for the reverse engineering of various substances.

Description

technical field [0001] The invention belongs to the technical field of precision measurement, and particularly relates to the application technology of a micro-inertial measurement unit, which is suitable for accurate measurement of three-dimensional complex entity dimensions, shapes and mutual positions in industries such as machinery, military industry, automobile, and industrial manufacturing. Background technique [0002] In industrial production and scientific experiments, three-dimensional position measurement is often required, such as the processing of workpieces, the precise installation of parts, and so on. For the ordinary measurement of small workpieces, the three-dimensional position measurement can be completed with ordinary measuring tools, but for large workpieces or precision measurements, ordinary measurement methods often do not work. For example, in the manufacture of aircraft wings, it is necessary to calibrate the position of each point on the wing. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/20G01C21/16
Inventor 房建成陶冶马艳武张海鹏宋星乙冉冉
Owner BEIHANG UNIV
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