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Sensor Data Transmission and Processing of Inertia Motion Capture System

Author: RongZhiNeng
Tutor: JinWenGuang
School: Zhejiang University
Course: Circuits and Systems
Keywords: Motion capture system Wireless sensor networks Sensing data preprocessing Kalman filter algorithm Data refresh rate Gesture synthesis
CLC: TP212
Type: Master's thesis
Year: 2012
Downloads: 57
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Abstract


Motion capture systems are widely used in human-computer interaction , motion analysis , model coding , virtual reality , animation , intelligent monitoring systems , game production areas . The motion capture system by the motion parameters of the original data acquisition and transmission system , match movement parameter analysis processing system and body posture estimation system . This paper studies human motion capture system is a MEMS-based inertial sensors , and application of related technologies such as wireless sensor networks to achieve . Parameters of the body motion is the basic ring , the paper in the original communication mechanism , the polymerization method of the pipeline data , using a wireless sensor network to a limited data transmission speed, and to achieve as high as possible of the sensing data update rate , so that the system data update rate of 120Hz, and control of the average packet loss rate of less than 1% , the data delay of up to 40ms, the performance of the system data transmission over commercial products on the market . Movement parameter analysis and processing system is an integral part of human motion capture system , on the basis of careful analysis system with acceleration, magnetic sensor and angular velocity of the gyroscope the three inertial sensing data , some suitable data preprocessing method of the actual situation of the system , and use the actual system . Finally, the integration of gesture synthesis algorithm based compensation , and generally in the Kalman filter algorithm compared this algorithm to achieve precision , static accuracy of 1 ° RMS dynamic accuracy of 2 ° RMS , and the computation complexity is smaller, suitable for use in computing power is not strong sensor node terminal .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor
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