Abstract:Motion tracking techniques have been extensively studied in recent years. However, capturing movements of the upper limbs is a challenging task. This document presents the estimation of arm orientation and elbow and wrist position using wearable flexible sensors (WFSs). A study was developed to obtain the highest range of motion (ROM) of the shoulder with as few sensors as possible, and a method for estimating arm length and a calibration procedure was proposed. Performance was verified by comparing measuremen… Show more
“…FSR (force sensitive resistors) have been used for flex sensing and sensor fabric touch sensing [16][17][18]. For example, it has been used commercially for detecting flexure angles, however the component cost is prohibitive for consumer electronics (on the order of $40) [19].…”
Section: Related Work -Soft Touch Sensormentioning
confidence: 99%
“…The device can cover curved surfaces and be used for human-computer interface through near-field capacitive touch interface. They operate in R mode [13], C mode [19] or mixed R-C mode [22].…”
Section: Related Work -Soft Touch Sensormentioning
We report the development of a novel soft body touch sensor capable of measuring contact force along its length. The sensor can be embedded in soft objects and on curved surfaces for smart furniture, interactive electronics, and general robotics applications. The sensor uses pneumatic transduction principle and achieves both high sensitivity and impact loading tolerance. The development is motivated by the needs of consumer electronics industries for smart embedded furniture and interactive toys. The current work fills a gap of existing soft-bodied touch sensors. The main sensor body is completely polymeric and contains no conductive or semiconducting material elements. It exhibits high pass frequency response to reject common mode contact forces or shape variations. The central question addressed by this paper is dynamic behavior of this sensor under normal and impact touch force. In this study we developed a theoretical model for the sensor output and validated with experimental measurements. We modeled sensor behavior under two operational regimes of different unloading speed. Depending on the rate of change, the sensor could be in force limited relaxation mode or elastic relaxation (free relaxation) mode. Measurements have been performed to capture time constants of occupant behavior in a smart cushion application.
“…FSR (force sensitive resistors) have been used for flex sensing and sensor fabric touch sensing [16][17][18]. For example, it has been used commercially for detecting flexure angles, however the component cost is prohibitive for consumer electronics (on the order of $40) [19].…”
Section: Related Work -Soft Touch Sensormentioning
confidence: 99%
“…The device can cover curved surfaces and be used for human-computer interface through near-field capacitive touch interface. They operate in R mode [13], C mode [19] or mixed R-C mode [22].…”
Section: Related Work -Soft Touch Sensormentioning
We report the development of a novel soft body touch sensor capable of measuring contact force along its length. The sensor can be embedded in soft objects and on curved surfaces for smart furniture, interactive electronics, and general robotics applications. The sensor uses pneumatic transduction principle and achieves both high sensitivity and impact loading tolerance. The development is motivated by the needs of consumer electronics industries for smart embedded furniture and interactive toys. The current work fills a gap of existing soft-bodied touch sensors. The main sensor body is completely polymeric and contains no conductive or semiconducting material elements. It exhibits high pass frequency response to reject common mode contact forces or shape variations. The central question addressed by this paper is dynamic behavior of this sensor under normal and impact touch force. In this study we developed a theoretical model for the sensor output and validated with experimental measurements. We modeled sensor behavior under two operational regimes of different unloading speed. Depending on the rate of change, the sensor could be in force limited relaxation mode or elastic relaxation (free relaxation) mode. Measurements have been performed to capture time constants of occupant behavior in a smart cushion application.
“…The capacitive sensors are made using layered medical grade silicone elastomers doped with conductive and nonconductive fillers. This study is a modified compilation of publication [163].…”
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