Device-to-Device based Proximity Service: Architecture, Issues, and Applications by Yufeng Wang & Athanasios V. Vasilakos & Qun Jin & Hongbo Zhu

Author:Yufeng Wang & Athanasios V. Vasilakos & Qun Jin & Hongbo Zhu [Wang, Yufeng]
Language: eng
Format: azw3
Publisher: CRC Press
Published: 2017-07-11T16:00:00+00:00

6.5.2 Quality of Smartphone Sensors

It remains doubtful whether the qualities of built-in smartphone sensors are adequate to produce fall detection and prevention systems with acceptable performance. For example, the usual dynamic ranges of the built-in accelerometers in smartphones are insufficient for accurate fall incident detection. Usually, acceptable dynamic ranges for accelerometers from ±4 g to ±16 g have been mentioned in previous publications. Smartphone typically contains accelerometers with dynamic ranges of ±2 g or less. Therefore, in smartphone-based HAR-related applications (e.g., fall detection), adequate attention should be paid to the quality of the sensors. Specifications of the sensors should satisfy the minimum requirements of the applications. Or alternatively, multiple sensor data should be appropriately integrated to enhance the data quality provided by smartphone sensors.

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