Measurement system for special surface mapping using miniature displacement sensors

Aspheric Surface Measurement Using Capacitive Sensors

This paper proposes a new method for the measurement of spherical coordinates by using capacitive sensors as a non-contact probe solution of measurement of aspheric surfaces. The measurement of the average effect of the capacitive probe and the influence of capacitive probe tilting were studied with respect to an eccentric spherical surface. Based on the tested characteristic curve of the avera...

Wholefiled Optical Metrology: Surface Displacement Measurement Wholefield Optical Metrology: Surface Displacement Measurement

Surface Contour Measurement Using a Short Range Laser Displacement Sensor

Center for Automotive Materials and Manufacturing National Research Council Canada 800 Collip Circle, London, Ontario, Canada, N6G 4X8 Contact: [email protected] Reviewed, accepted September 18, 2009 Abstract Non-contact freeform surface measurement is widely used in industry. To acquire the surface data, a laser displacement sensor and a motion system are typically used. One of the factors t...

Development of a Wireless Displacement Measurement System Using Acceleration Responses

Displacement measurements are useful information for various engineering applications such as structural health monitoring (SHM), earthquake engineering and system identification. Most existing displacement measurement methods are costly, labor-intensive, and have difficulties particularly when applying to full-scale civil structures because the methods require stationary reference points. Indi...

Development of a Miniature, Multichannel, Extended Fabry-perot Fiber-optic Laser Interferometer System for Low Frequency Si-traceable Displacement Measurement

INTRODUCTION Laser interferometry has become a staple of SItraceable displacement measurement techniques. This, combined with decreasing cost per channel, miniaturization, and a multitude of commercially available off-the-shelf systems, creates ever more attractive applications unheard-of a few years ago. Although significant efforts have been made to shrink the size of optical components neces...