Study of Vehicle Vibration for High-Performance Land Mobile Satellite Tracking System for Telemedicine

Study of Vehicle Vibration for High-Performance Land Mobile Satellite Tracking System for Telemedicine

Toshihiko Kitano
Copyright: © 2014 |Pages: 22
DOI: 10.4018/ijehmc.2014040102
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Abstract

The land mobile satellite service (LMSS) is a key component of telemedicine and an important technology for grasping the status of a patient in an ambulance. However, rough road surfaces can destabilize satellite tracking and disturb data communications with the ambulance carrying the patient. Nevertheless, accurate estimates of the location of the vehicle at any given time and rapid reconfiguration of the tracking antenna based on past data can allow stable and effective data communications. This study examined positions characterized by large vibration amplitudes from past data on vehicle vibrations due to rough road surfaces as feature points to provide the vehicle system in advance with reference pitch angle vibration data. Drawing on reference vibration data for convolution and a cost function, The authors synchronized past data with real-time vibration data and accurately estimated the point at which the ambulance or other vehicle passes on the road. They also discuss limits on the range of vibrations that can be used for data synchronization. This study demonstrates that the present method enables high-precision estimates of vehicle location.
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2. Background

Various methods have been proposed to transmit patient biometric information (including video images) from the ambulance to the hospital, including mobile phones, wireless LAN, and satellite communications. Several examples involving mobile phones have been reported, including third-generation phones used mainly in Asia, including Japan and Korea, third-generation UMTS phones used mainly in Europe, and second-generation GSM phones still in use in Europe.

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