Non-contact Low Power EEG/ECG Electrode for High Density Wearable Biopotential Sensor Networks

2009 ◽  
Author(s):  
Yu M. Chi ◽  
Stephen R. Deiss ◽  
Gert Cauwenberghs
Keyword(s):  
Sensor Networks ◽  
Low Power ◽  
High Density

scholarly journals Variable Link Performance Due to Weather Effects in a Long-Range, Low-Power LoRa Sensor Network

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3128
Author(s):  
Thomas Ameloot ◽  
Patrick Van Torre ◽  
Hendrik Rogier
Keyword(s):  
Sensor Networks ◽  
Low Power ◽  
Sensor Network ◽  
Link Quality ◽  
Long Distance ◽  
Received Power ◽  
Link Performance ◽  
Weather Changes ◽  
Minimal Power Consumption ◽  
Seasonal Weather

When aiming for the wider deployment of low-power sensor networks, the use of sub-GHz frequency bands shows a lot of promise in terms of robustness and minimal power consumption. Yet, when deploying such sensor networks over larger areas, the link quality can be impacted by a host of factors. Therefore, this contribution demonstrates the performance of several links in a real-world, research-oriented sensor network deployed in a (sub)urban environment. Several link characteristics are presented and analysed, exposing frequent signal deterioration and, more rarely, signal strength enhancement along certain long-distance wireless links. A connection is made between received power levels and seasonal weather changes and events. The irregular link performance presented in this paper is found to be genuinely disruptive when pushing sensor-networks to their limits in terms of range and power use. This work aims to give an indication of the severity of these effects in order to enable the design of truly reliable sensor networks.

Cortina: collaborative indoor positioning using low-power sensor networks

2012 ◽  
Vol 6 (3) ◽  
pp. 137-160 ◽  
Author(s):  
Gianni Giorgetti ◽  
Richard Farley ◽  
Kiran Chikkappa ◽  
Judy Ellis ◽  
Telis Kaleas
Keyword(s):  
Sensor Networks ◽  
Low Power ◽  
Indoor Positioning ◽  
Power Sensor
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