Wireless Passive Measurement Method for Resistance Strain Sensor

2019 ◽  
pp. 736-748
Author(s):  
Songran Huang ◽  
Liwei Song
Keyword(s):  
Measurement Method ◽  
Strain Sensor ◽  
Resistance Strain ◽  
Passive Measurement

scholarly journals Development of a Bridge Weigh-in-Motion Sensor: Performance Comparison Using Fiber Optic and Electric Resistance Strain Sensor Systems

2014 ◽  
Vol 14 (12) ◽  
pp. 4284-4296 ◽  
Author(s):  
Myra Lydon ◽  
Susan E. Taylor ◽  
Desmond Robinson ◽  
Paul Callender ◽  
Ciaran Doherty ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Strain Sensor ◽  
Performance Comparison ◽  
Resistance Strain ◽  
Motion Sensor ◽  
Sensor Systems ◽  
Electric Resistance ◽  
Sensor Performance ◽  
Weigh In Motion ◽  
Bridge Weigh In Motion

scholarly journals Measurement of Relative Position of Camera and Optical Beacon by Simultaneous Passive Method

2019 ◽  
Vol 8 (1) ◽  
pp. 1 ◽  
Author(s):  
Jiri Nemecek ◽  
Martin Polasek
Keyword(s):  
Mathematical Model ◽  
Relative Position ◽  
Analytical Method ◽  
Measurement Method ◽  
Position Angle ◽  
Experimental Measurements ◽  
Light Sources ◽  
Passive Measurement ◽  
Passive Method ◽  
The Mathematical Model

The paper deals with a problem of a passive measurement of the relative position of an optical beacon and an optical camera by a simultaneous analytical method. The beacon is composed of nine light sources which are arranged in space in a defined way. The proposed beacon layout enables the measurement of the beacon range and one position angle of the camera. This paper presents the mathematical model of the measurement method and the results, which were gathered on the basis of two experimental measurements. The first experiment was only indicative. The extreme results of the second experiment were as follows: the minimum and maximum absolute percentage errors of the beacon range were zero and 1.72%, the minimum and maximum errors of the position angle were 0.1 deg and 1.64 deg. The standard commercial cameras and lenses with different focal lengths were used.

scholarly journals Investigation of an Active Measurement Method to Detect Inertial Cavitation and the Presence of Potential Drug Carriers

2021 ◽  
Vol 7 (2) ◽  
pp. 883-886
Author(s):  
Jan Helmerich ◽  
Benedikt George ◽  
Stefan J. Rupitsch
Keyword(s):  
Measurement Method ◽  
Closed Loop ◽  
Focused Ultrasound ◽  
Drug Carriers ◽  
Closed Loop Control ◽  
Potential Drug ◽  
Loop Control ◽  
Passive Measurement ◽  
Inertial Cavitation ◽  
Active Measurement

Abstract Drug carriers, such as nanoparticles, are capable of releasing pharmaceutically active ingredients, which can be initiated by focused ultrasound via the effect of inertial cavitation. This effect of inertial cavitation is often verified by passive measurement methods that rely on the analysis of emitted acoustic signals caused by the implosion of bubbles. However, a major issue of such methods is their inability to detect the presence of potential drugs in human vessels, complicating the implementation of a closed loop control for future medical therapies. Therefore, this contribution introduces an active measurement method to determine both inertial cavitation and the presence of potential drug carriers in a tissue mimicking phantom

The Comparison and Analysis of Fiber Grating Strain Sensor and Resistance Strain Slice for Transmission Tower Vibration Monitoring

2014 ◽  
Vol 533 ◽  
pp. 211-213
Author(s):  
Jin Feng Geng ◽  
Dong Fang Ma ◽  
Hong Sheng Cai ◽  
Wen Tao Wu ◽  
Jun Wei Dong ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Resistance Strain ◽  
Vibration Monitoring ◽  
Bragg Grating ◽  
Fiber Grating ◽  
Transmission Tower ◽  
Existing Problems ◽  
Tower Vibration

Contrast advantages and existing problems of resistance strain slice and fiber grating strain sensor for tower vibration strain monitoring, compare the structure of the two, and do the on-site installation and experiments, analyze the monitoring data. It can make a conclusion that the properties of fiber bragg grating strain sensors are basic consistent with resistance strain slice. And fiber bragg grating strain sensors can be used for transmission tower vibration monitoring .

Experimental Study on Critical Load of Compression Column with a Rectangular Cross-Section Based on Material Mechanics

2014 ◽  
Vol 908 ◽  
pp. 287-290
Author(s):  
Shi Chuang Zhuo ◽  
Qiang Zhang ◽  
Shun Cai Li
Keyword(s):  
Experimental Study ◽  
Critical Load ◽  
Cross Section ◽  
Strain Measurement ◽  
Measurement Method ◽  
Test Bench ◽  
Rectangular Cross Section ◽  
Resistance Strain ◽  
Euler Formula ◽  
Horizontal Asymptote

By means of resistance strain gauge and multifunctional test bench of materials mechanics, the relation curve between the axial compressive forces of the two-ends hinged column with a rectangular cross-section and total bridge strain was obtained by the resistance strain measurement method, accordingly, by the horizontal asymptote of this relation curve the critical load of compression column was obtained. The study indicates that the critical load obtained respectively by the resistance strain measurement method and Euler formula theory fits very well, and the research results verified the reliability of the experimental method.

New Blood Pressure Measurement Method Using Waveform Features

2012 ◽  
Author(s):  
H. Lan ◽  
A. M. Al-Jumaily
Keyword(s):  
Blood Pressure ◽  
Brachial Artery ◽  
Pressure Measurement ◽  
Measurement Method ◽  
Cuff Pressure ◽  
Blood Pressure Measurement ◽  
Strain Sensor ◽  
Measurement Process ◽  
Surface Strain ◽  
Cuff Volume

The Ausculatory and the Oscillometric are the most commonly used blood pressure measurement methods worldwide. However, the ausculatory method requires professionally trained observers and is not suitable for automatic BP measurement; while the oscillometric method is less accurate in wide age groups. A new BP measurement method is introduced here which determines the subject’s BP value by features of the waveform measured by a strain sensor on the arm skin. During the cuff based measurement process, blood pulses in the brachial artery lead to artery deformations, which transfer to the arm surface in the form of surface strain and to the cuff in the form of cuff pressure oscillation. Since the cuff volume and amount of air keeps changing during the measurement, arm surface strain changes are more related to blood pulse. A piezoelectric film strain sensor is placed on the arm surface above the brachial artery to measure the surface strain. Since the artery closure statuses are different during the BP measurement process, the unique features of the measured waveform are observed in our previous study. Using these features, the subject’s BP can be determined. The analysis of these features and their relation to the subject’s BP are illustrated in this paper.

Sign in / Sign up

Export Citation Format

Share Document