Communication distance correlates positively with emitter current in underwater electric current communication

Zhou, Yang; Wang, Wei; Deng, Heng; Wang, Chen; Fan, Ruifeng; Luo, Wenguang; Xie, Guangming

doi:10.1109/chicc.2016.7554362

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…As we mentioned earlier, the developed electrocommunication system [24,[44][45][46] uses amplitude shift keying for signal modulation. The frequency of the carrier signal is 40 kHz.…”

Section: Tdma-based Electrocommunication Systemmentioning

confidence: 99%

Underwater robot coordination using a bio-inspired electrocommunication system

et al. 2022

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Due to the challenging communication and control systems, few underwater multi-robot coordination systems are currently developed. In nature, weakly electric fish can organize their collective activities using electrocommunication in turbid water. Inspired by this communication mechanism, we developed an artificial electrocommunication system for underwater robots in our previous work. In this study, we coordinate a group of underwater robots using this bio-inspired electrocommunication. We first design a time division multiple access (TDMA) network protocol for electrocommunication to avoid communication conflicts during multi-robot coordination. Then, we revise a distributed controller to coordinate a group of underwater robots. The distributed controller on each robot generates the required controls based on adjacent states obtained through electrocommunication. A central pattern generator (CPG) controller is designed to adjust the speed of individuals according to distributed control law. Simulations and experimental results show that a group of underwater robots is able to achieve coordination with the developed electrocommunication and control systems.

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“…As we mentioned earlier, the developed electrocommunication system [24,[44][45][46] uses amplitude shift keying for signal modulation. The frequency of the carrier signal is 40 kHz.…”

Section: Tdma-based Electrocommunication Systemmentioning

confidence: 99%

Underwater robot coordination using a bio-inspired electrocommunication system

et al. 2022

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“…In complex marine environments, efficient communication is very important. Underwater acoustic communication is one of the common communication methods, which however has problems of large Doppler shifts and multi-path effects [1], [2]. Underwater optical communication is easily affected by the water conditions and cannot be applied in turbid waters [3], [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…One possible solution to increase the communication distance is simply improving the transmitting power of the system. However, according to the physical model of electrocommunication [2], the transmitting power grows the third power concerning the communication distance. Therefore, increasing the transmitting power could not be viable to dramatically enlarge the communication distance for miniature robots that have limited power and space.…”

Section: Introductionmentioning

confidence: 99%

An Electrocommunication System Using FSK Modulation and Deep Learning Based Demodulation for Underwater Robots

Wang

Liu

Wang

et al. 2020

2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

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Underwater communication is extremely challenging for small underwater robots which typically have stringent power and size constraints. In our previous work, we developed an artificial electrocommunication system which could be an alternative for the communication of small underwater robots. This paper further presents a new electrocommunication system that utilizes Binary Frequency Shift Keying (2FSK) modulation and deep-learning-based demodulation for underwater robots. We first derive an underwater electrocommunication model that covers both the near-field area and a large transition area outside of the near-field area. 2FSK modulation is adopted to improve the anti-interference ability of the electric signal. A deep learning algorithm is used to demodulate the electric signal by the receiver. Simulations and experiments show that with the same testing condition, the new communication system outperforms the previous system in both the communication distance and the data transmitting rate. In specific, the newly developed communication system achieves stable communication within the distance of 10 m at a data transfer rate of 5 Kbps with a power consumption of less than 0.1 W. The substantial increase in communication distance further improves the possibility of electrocommunication in underwater robotics.

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