scholarly journals A Wearable Force Plate Designed Using Pressure Sensitive Electric Conductive Rubber

2009 ◽  
Vol 3 (3) ◽  
pp. 282-295
Author(s):  
Tao LIU ◽  
Yoshio INOUE ◽  
Kyoko SHIBATA
Keyword(s):  
Force Plate ◽  
Conductive Rubber ◽  
Pressure Sensitive

513 The Pressure-Sensitive Electric Conductive Rubber technique for detecting tangential force

2006 ◽  
Vol 2005.18 (0) ◽  
pp. 325-326
Author(s):  
Satoshi NAKAJIMA ◽  
Masafumi ODA ◽  
Toshiaki HARA ◽  
Toshiaki UOTANI ◽  
Andreas DOENNI ◽  
...  
Keyword(s):  
Tangential Force ◽  
Conductive Rubber ◽  
Pressure Sensitive

429 The fundamental study on the haptic sensor using Pressure-Sensitive Conductive Rubber

2007 ◽  
Vol 2006.19 (0) ◽  
pp. 358-359
Author(s):  
Satoshi NAKAJIMA ◽  
Takeshi MORIJIRI ◽  
Masafumi ODA ◽  
Toshiaki HARA ◽  
Akifumi KOSAKAI
Keyword(s):  
Fundamental Study ◽  
Conductive Rubber ◽  
Pressure Sensitive

scholarly journals Pressure-Sensitive Insoles for Real-Time Gait-Related Applications

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1448 ◽  
Author(s):  
Elena Martini ◽  
Tommaso Fiumalbi ◽  
Filippo Dell’Agnello ◽  
Zoran Ivanić ◽  
Marko Munih ◽  
...  
Keyword(s):  
Real Time ◽  
Center Of Pressure ◽  
Pearson Correlation ◽  
Reaction Force ◽  
Force Plate ◽  
Vertical Component ◽  
The Body ◽  
Heel Strike ◽  
Pressure Sensitive ◽  
Time Accuracy

Wearable robotic devices require sensors and algorithms that can recognize the user state in real-time, in order to provide synergistic action with the body. For devices intended for locomotion-related applications, shoe-embedded sensors are a common and convenient choice, potentially advantageous for performing gait assessment in real-world environments. In this work, we present the development of a pair of pressure-sensitive insoles based on optoelectronic sensors for the real-time estimation of temporal gait parameters. The new design makes use of a simplified sensor configuration that preserves the time accuracy of gait event detection relative to previous prototypes. The system has been assessed relatively to a commercial force plate recording the vertical component of the ground reaction force (vGRF) and the coordinate of the center of pressure along the so-called progression or antero-posterior plane (CoPAP) in ten healthy participants during ground-level walking at two speeds. The insoles showed overall median absolute errors (MAE) of 0.06 (0.02) s and 0.04 (0.02) s for heel-strike and toe-off recognition, respectively. Moreover, they enabled reasonably accurate estimations of the stance phase duration (2.02 (2.03) % error) and CoPAP profiles (Pearson correlation coefficient with force platform ρCoP = 0.96 (0.02)), whereas the correlation with vGRF measured by the force plate was lower than that obtained with the previous prototype (ρvGRF = 0.47 (0.20)). These results confirm the suitability of the insoles for online sensing purposes such as timely gait phase estimation and discrete event recognition.

Application of Conductive Rubber Filled by Carbon Black for 3-D Force Measurement

2013 ◽  
Vol 300-301 ◽  
pp. 547-550
Author(s):  
Shan Hong Li ◽  
Yun Jian Ge ◽  
Ying Huang ◽  
Yu Bing Wang ◽  
Hui Bin Cao ◽  
...  
Keyword(s):  
Carbon Black ◽  
Force Measurement ◽  
Tactile Sensor ◽  
Force Model ◽  
Sensitive Material ◽  
Piezoresistive Effect ◽  
Conductive Rubber ◽  
Pressure Sensitive ◽  
Simulation Results ◽  
Pressure Resistance

Pressure-sensitive conductive rubber has been investigated as sensitive material due to its good pressure-resistance characteristics. This paper presents a flexible tactile sensor with new structure. The sensing mechanism is based on body piezoresistive effect of conductive rubber filled by carbon black. To improve the sensor’s flexibility, there is a smart angle design in the arrangement of the wires in lower electrodes layer. Besides, the force model of the sensor has been described. The simulation results indicate the validity of 3-D force measurement of the sensor.

scholarly journals Development of a Pressure-Sensitive Conductive Rubber Sensor for Analyzing Meniscal Injury in Porcine Models

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Shunsuke Sezaki ◽  
Shuhei Otsuki ◽  
Kuniaki Ikeda ◽  
Nobuhiro Okuno ◽  
Yoshinori Okamoto ◽  
...  
Keyword(s):  
Pressure Distribution ◽  
Contact Pressure ◽  
High Reliability ◽  
Compressive Load ◽  
Meniscal Injury ◽  
Intact Group ◽  
Conductive Rubber ◽  
Pressure Sensitive ◽  
Radial Tear ◽  
Pressure Concentration

The assessment of the distribution of contact pressure on the meniscus is important in the elucidation of kinematics, etiology of joint diseases, and establishment of treatment methods. Compared with sensors widely used in recent years, pressure-sensitive conductive rubber sensors are easy to mold, flexible, durable, and resistant to shearing forces. This study is aimed at developing a rubber sensor for meniscal research and evaluating the pressure distribution after meniscal injury using porcine models. After confirming the reliability of the rubber sensor, contact pressure was obtained from the rubber sensor using the medial meniscus and femur of the porcine knee. Three test conditions of intact meniscus, radial tear, and meniscectomy were prepared, and a compressive load of 100 N was applied. After confirming the high reliability of the rubber sensor, the intact meniscus had the most uniform pressure distribution map, while the pressure in the meniscectomy model was concentrated in the resection region. The high-pressure region was significantly smaller in the intact group than in the radial tear models after 80 and 100 N ( P < 0.05 ). The rubber sensor captured the pressure concentration specific to each examination group and was useful for evaluating the relationship between the pattern of meniscal injury and changes in the biomechanical condition of the knee.

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