Non-contact measurement method of displacement and attitude of two-dimensional moving object without guide rail in plane or curved surface

A non-contact measurement, two-dimensional motion technology, used in measurement devices, navigation, mapping and navigation, etc., can solve the problems of complex measurement methods, limited tracking speed, and many installation equipment, and achieve simple measurement methods, simple power supply, The effect of fewer installation parts

Active Publication Date: 2016-05-11
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the existing non-contact measurement method, such as many devices installed on the device under test, complex installation, complex measurement method and limited tracking speed. Non-contact measurement method of object's displacement and attitude

Method used

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  • Non-contact measurement method of displacement and attitude of two-dimensional moving object without guide rail in plane or curved surface
  • Non-contact measurement method of displacement and attitude of two-dimensional moving object without guide rail in plane or curved surface
  • Non-contact measurement method of displacement and attitude of two-dimensional moving object without guide rail in plane or curved surface

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specific Embodiment approach 1

[0030] Specific implementation mode one: see figure 1 , 2 and 3 illustrate this embodiment, the non-contact measurement method of the displacement and attitude of a two-dimensional moving object without a guide rail in a plane or a curved surface described in this embodiment, the specific process of this method is,

[0031] Step 1: Fix two photoelectric position sensors on the surface of the moving object to be measured, and set the signal input terminals of the photoelectric position sensors opposite to the relative motion plane or curved surface, and keep a certain distance from the relative motion plane or curved surface to ensure that the two The vertical distance between the photoelectric position sensor and the relative motion plane or curved surface is greater than 0 and less than 1cm, and the signal output end of the photoelectric position sensor is connected to the data signal input end of the computer by wired or wireless transmission; the two The two photoelectric ...

specific Embodiment approach 2

[0047] Embodiment 2: The difference between this embodiment and the method for non-contact measurement of the displacement and attitude of a two-dimensional moving object without guide rails in a plane or curved surface described in Embodiment 1 is that the two photoelectric position sensors described are opposite to each other. The vertical distance between the motion planes or curved surfaces is greater than 0 and less than 0.5cm.

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Abstract

The invention provides a noncontact measurement method for displacement and posture of an object performing two-dimensional motion in a plane or a curved surface without a guide rail, belongs to the field of methods for measuring displacement and posture of an object performing two-dimensional motion, and solves the problems that multiple devices are installed, the installation is complex, the measurement method is complex, and the tracking speed is limited in the traditional noncontact measurement method. Two photoelectric position sensors are installed on the surface of a moving object to be measured; when the moving object to be measured is static, a horizontal rectangular plane coordinate system is established in a relative motion plane or curved surface; initial positions of the two photoelectric position sensors are determined; the moving object to be measured is subjected to two-dimensional motion, the photoelectric position sensors collects image information of the relative motion plane or curved surface in real time, each photoelectric position sensor carries out integration on displacement variation obtained by the two photoelectric position sensors by comparing information of continuous two or more images; and according to the initial positions, the displacement and posture information of the moving object are obtained. The noncontact measurement method for the displacement and posture of the object performing the two-dimensional motion in the plane or the curved surface without the guide rail is applied to the measurement field.

Description

technical field [0001] The invention belongs to the field of displacement and attitude measurement methods of two-dimensional moving objects. Background technique [0002] In view of the characteristics of two-dimensional motion without guide rails in a plane or curved surface, general linear measuring instruments such as gratings and code discs have fixed measurement directions and measurement ranges, which are not suitable for position measurement with arbitrary motion directions and large motion ranges in planes or curved surfaces. For some precise measurement of the pose and attitude of free-moving objects without interference, the instruments of the contact measurement method will affect the motion state of the moving object, and are not suitable for the measurement of such moving objects. At present, non-contact measurement mainly includes visual camera measurement, indoor GPS, inertial navigation, laser tracker and so on. The two measurement methods of visual camera,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C23/00
CPCG01C23/00
Inventor 齐乃明徐喆垚周啟航齐骥孙康霍明英
Owner HARBIN INST OF TECH
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