Wireless sensing framework for long-term measurements of electric organ discharge

On using compressed sensing for efficient transmission & storage of electric organ discharge

“…A Zero Crossing Detector (ZCD) calculates the frequency of the input signal during a predefined time period. In our previous system, the frequency data were sent to the radio directly [1]. In this framework, our proposed CS system is inserted between the ZCD and the radio.…”

“…But, until our recent study [1], the largest study in the literature had accquired data for a maximum of one month. Figure. 1 shows an overview of the system we built [1]. The system consists of sensors to sense the EOD signals and transmit them over the wireless channel to a base station, which transmits the data to a cloud storage.…”

“…In prior research on the EOD of electric fish, the EOD signals have been recorded in live electric fish to study the effect of environmental factors and social interactions on the fish [2]- [4]. But, until our recent study [1], the largest study in the literature had accquired data for a maximum of one month. Figure. 1 shows an overview of the system we built [1].…”

“…However, this paper presents our results in the direction of addressing the last two challenges. Motivation: This work emanates from our interdisciplinary research effort to instrument a biology lab with wireless sensors to record the electric organ discharge (EOD) of a mildly electric fish Sternopygus macrurus [1]. The electric field for the EOD of the S. macrurus is created by specialized cells called 'electrocytes.'…”

“…In the corresponding data gathering experiment on four fish in the lab, the data were gathered for more than six months, with the size of the gathered data quickly increasing to several hundred megabytes in a few days [1]. This especially brings to bear the challenges of having to transmit data over the wireless medium and store large amounts of data under the constraint of a strict power budget.…”