Sensors, Vol. 19, Pages 4364: Satellite-Based Wireless Sensor Development and Deployment Studies for Surface Wave Testing

Sensors, Vol. 19, Pages 4364: Satellite-Based Wireless Sensor Development and Deployment Studies for Surface Wave Testing Sensors doi: 10.3390/s19204364 Authors: Pengju Xu Wentao Wang Although cable-based seismic sensing systems have provided reliable data in the past several decades, they become a bottleneck for large-area monitoring and critical environmental (volcanic eruptions) sensing because of their cost, difficulty in deploying and expanding, and lack of accurate three-dimensional geographic information. In this paper, a new wireless sensing system is designed consisting of a portable satellite device, a self-sustaining power source, a low-cost computational core, and a high-precision sensor. The emphasis of this paper is to implement in low-cost hardware without requirements of highly specialized and expensive data acquisition instruments. Meanwhile, a computational-core-embedded algorithm based on compressive sensing (CS) is also developed to compress data size for transmission and encrypt the measured data preventing information loss. Seismic data captured by the accelerometer sensor are coded into compressive data packages and then transferred via satellite communication to a cloud-based server for storage. Acceleration and GPS information is decrypted by the ℓ1-norm minimization optimization algorithm for further processing. In this research, the feasibility of the proposed sensing system for the acquisition of seismic testing is investigated in an ou...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research