scholarly journals MR compatible force sensing system for real-time monitoring of wrist moments during fMRI testing

2006 ◽  
Vol 155 (2) ◽  
pp. 300-307 ◽  
Author(s):  
Joseph Hidler ◽  
Timea Hodics ◽  
Benjamin Xu ◽  
Bruce Dobkin ◽  
Leonardo G Cohen
Keyword(s):  
Real Time ◽  
Force Sensing ◽  
Real Time Monitoring ◽  
Sensing System

scholarly journals Wavelength Characteristic Analysis of a FBG Array Embedded in Quaternary Unconsolidated Strata during a Deep Borehole Installation

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Dingding Zhang ◽  
Chenyang Ma ◽  
Yanyan Duan ◽  
Wengang Du ◽  
Jinxuan Liu ◽  
...  
Keyword(s):  
Real Time ◽  
Wavelength Division Multiplexing ◽  
Wavelength Shift ◽  
Deep Borehole ◽  
Field Scale ◽  
Real Time Monitoring ◽  
Transmission Characteristics ◽  
Characteristic Analysis ◽  
Wavelength Division ◽  
Sensing System

Real-time monitoring of settlement and deformation within a coal mine’s deep quaternary unconsolidated strata presents challenges with installation and signal analysis. This paper presents results from successfully installing a field-scale fiber Bragg grating (FBG) sensing system in a deep borehole for the purpose of achieving real-time monitoring of the settlement and deformation in a deep unconsolidated stratum. A 152 m deep by 133 mm diameter borehole was used to embed an array of 24 FBG sensors in 12 layers of gravel and clay from between 92.4 m and 148.7 m of unconsolidated quaternary strata. A wavelength bandwidth of ±4.5 nm was used with a wavelength division multiplexing and spatial division multiplexing technique to compose a 4-by-6 sensor array. During the four stages of installation, the real-time transmission characteristics and the changes in the FBG wavelength for this sensing system were evaluated. While the FBG sensing system was stable after installation, it was clearly shown that the engineering techniques associated with both positioning and grouting influenced the mechanical properties and transmission characteristics of the system. After installation, the sensor survival rate was found to be 78.26% with a maximum FBG wavelength shift of 1.447 nm. This field-scale installation has provided information and experience that will improve future installations of buried fiber optic sensing technology throughout the underground coal mine industry.

A High-Throughput Impedance Sensing System for 3D Cell Drug Permeability Gradient Effect Real-Time Monitoring

2020 ◽  
Vol MA2020-01 (27) ◽  
pp. 1900-1900
Author(s):  
Yong Qiu ◽  
Yuxiang Pan ◽  
Chenlei Gu ◽  
Deming Jiang ◽  
Xing Liu ◽  
...  
Keyword(s):  
Real Time ◽  
High Throughput ◽  
Real Time Monitoring ◽  
Impedance Sensing ◽  
Drug Permeability ◽  
Gradient Effect ◽  
Sensing System

Foresight on Real-Time Monitoring System for Submarine Optical Fiber Cables Based on Fiber Sensing Technology

2013 ◽  
Vol 341-342 ◽  
pp. 1089-1093 ◽  
Author(s):  
Xue Man Fan ◽  
Ying Jian Wang ◽  
Gui Li Wang ◽  
Chang Shu ◽  
Chun Guang Li
Keyword(s):  
Optical Fiber ◽  
Real Time ◽  
Fault Location ◽  
Real Time Monitoring ◽  
Fiber Sensing ◽  
Sensing System ◽  
Sensing Technology ◽  
Vibration Sensing ◽  
Main Factors ◽  
Optimization Schemes

In this paper, the main factors influencing the reliability of submarine optical fiber cables (SOFC) are analyzed, and the significance of the research on real-time monitoring technology of SOFC is illuminated. Also, the principle of distributed double Mach-Zehnder (M-Z) interference vibration sensing system is discussed. Then, the feasibility of the system applied in pre-warning and fault location of SOFC is verified. In view of the main problems of the optical fiber vibration sensing system, two optimization schemes are presented in this paper to improve the performance of the system.

Microwave Sensing System for Real-Time Monitoring of Solid Contaminants in Gas Flows

2015 ◽  
Vol 15 (9) ◽  
pp. 5296-5302 ◽  
Author(s):  
Mohamed Abou-Khousa ◽  
Ahmed Al-Durra ◽  
Khaled Al-Wahedi
Keyword(s):  
Real Time ◽  
Gas Flows ◽  
Real Time Monitoring ◽  
Sensing System

scholarly journals Development of a Real-Time Force and Temperature Sensing System with MEMS-LSI Integrated Tactile Sensors for Next-Generation Robots

2020 ◽  
Vol 32 (2) ◽  
pp. 323-332
Author(s):  
Masanori Muroyama ◽  
Hideki Hirano ◽  
Chenzhong Shao ◽  
Shuji Tanaka ◽  
◽  
...  
Keyword(s):  
Computer Architecture ◽  
Real Time ◽  
Temperature Compensation ◽  
Sensor Node ◽  
Sensor Nodes ◽  
Force Sensing ◽  
Regression Equations ◽  
Sensing System ◽  
Average Maximum ◽  
Force Data

This study proposes a sensing system that can sense force and temperature at the same time. The system consists of MEMS-LSI integrated tactile sensor devices called sensor nodes, a field-programmable gate array (FPGA) based relay node, and a host PC. For real-time temperature and force data acquisition, a time-sharing force and temperature task processing mechanism was implemented with a dedicated computer architecture in the FPGA configuration and the host program. This study firstly reports the temperature dependency analysis of a capacitive sensor readout circuit in the sensor node by circuit-level simulation. With a fabricated sensor node, sensor output data were measured and analyzed with varying temperatures and applied force. Based on the measured data, linear multiple regression equations for temperature compensation of sensed force data were developed. In the temperature range of 24.8°C–60°C, the average/maximum force errors when considering the temperature effect were −0.98%/65% without the compensation, and 0.072%/17% with the compensation, respectively. One cycle time of temperature and force sensing for one sensor node was 113 ms on average. The experimental results showed that real-time temperature and force sensing and temperature compensation for accurate force sensing could be achieved successfully. The study also demonstrated the system with hot-coffee cup and finger touch examples.

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