Non-contact Measurement Method Research Based on HoloLens

2017 ◽  
Author(s):  
Huang Jing ◽  
Yang Boxiong ◽  
Chen Jiajie
Keyword(s):  
Measurement Method ◽  
Contact Measurement

Research of the Measurement System of Liquid Displacement Based on Angular Tracking

2010 ◽  
Vol 20-23 ◽  
pp. 493-498
Author(s):  
Huan Qi Tao ◽  
Shuang Bao Ma
Keyword(s):  
Measurement System ◽  
Measurement Method ◽  
Laser Light ◽  
Angular Displacement ◽  
Actual Data ◽  
Liquid Level ◽  
Light Reflection ◽  
Contact Measurement ◽  
Displacement Based ◽  
Liquid Displacement

This paper introduces a kind of measurement method of the height of liquid level by the tracking the use of angular displacement, aiming at the difficulties and problems of non-contact measurement for the height of liquid level in ultrasonic. Under the principle of the simultaneous tracking and laser light reflection, it realize the corresponding relationship between the liquid displacement and the light imaging based on the triangulation method. Thus to obtain the actual data of the height of liquid level. That to offer another new option for non-contact measurement.

scholarly journals Non-contact PIM Measurement Method for Antenna using High-level IM Standard

2021 ◽  
Author(s):  
Masayoshi Kuwata ◽  
Nobuhiro kuga
Keyword(s):  
Schottky Barrier ◽  
Measurement Method ◽  
Dipole Antenna ◽  
Intermodulation Distortion ◽  
Coupling Loss ◽  
Contact Measurement ◽  
Novel Method ◽  
Three Stages ◽  
High Level ◽  
Excellent Stability

<p>A non-contact passive intermodulation distortion (PIM) measurement method for antenna using high-level IM standard (HIMS) is described as proposed herein. A novel method to estimate coupling loss between sensing antenna and a sample antenna is proposed, after which a complete one-port non-contact measurement for antenna is realized. Measurements are conducted in three stages: measuring IM characteristics of HIMS, estimating coupling loss using HIMS, and estimating practical PIM level of a sample antenna. A high-level IM standard consisting of a Schottky barrier diode was used for this study. The method enables ready evaluation of practical PIM of a sample antenna from a complete one-port non-contact measurement with excellent stability and repeatability. Then the validity of the proposed method was confirmed experimentally using a printed dipole antenna. After presenting an applicable measurement method for array antenna incorporating the proposed method, its effectiveness was verified experimentally.</p>

Predicting Edge Cracks on Shear-Cut High-Strength Steels by Modified Uniaxial Tensile Tests

2016 ◽  
Vol 703 ◽  
pp. 49-55 ◽  
Author(s):  
Martin Feistle ◽  
Isabella Pätzold ◽  
Roland Golle ◽  
Wolfram Volk
Keyword(s):  
Tensile Test ◽  
Measurement Method ◽  
High Strength Steels ◽  
High Strength ◽  
Tensile Tests ◽  
Uniaxial Tensile ◽  
Forming Process ◽  
Contact Measurement ◽  
Edge Cracks ◽  
Near Future

During the forming of high-strength steels, edge cracks occur unexpectedly on sheared edges e.g. during collar forming. A non-contact measurement method based on the well-known tensile test was developed. It allows the investigation of the formation of edge cracks under tensile loads and determining general criteria to predict the formation of edge cracks during a specific forming process. The criteria are validated experimentally by means of the collar-forming test. In conjunction with the proposed line-fit-method these criteria can be implemented easily in FEM software in the near future for the prediction of edge cracks.

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