Mifsud, A;
Haci, D;
Ghoreishizadeh, SS;
Liu, Y;
Constandinou, TG;
(2018)
Adaptive power regulation and data delivery for multi-module implants.
In:
Proceedings of the IEEE Biomedical Circuits and Systems Conference (BioCAS) 2017.
IEEE: Turin, Italy.
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Abstract
Emerging applications for implantable devices are requiring multi-unit systems with intrabody transmission of power and data through wireline interfaces. This paper proposes a novel method for power delivery within such a configuration that makes use of closed loop dynamic regulation. This is implemented for an implantable application requiring a single master and multiple identical slave devices utilising a parallel-connected 4-wire interface. The power regulation is achieved within the master unit through closed loop monitoring of the current consumption to the wired link. Simultaneous power transfer and full-duplex data communication is achieved by superimposing the power carrier and downlink data over two wires and uplink data over a second pair of wires. Measured results using a fully isolated (AC coupled) 4-wire lead, demonstrate this implementation can transmit up to 120 mW of power at 6 V (at the slave device, after eliminating any losses). The master device has a maximum efficiency of 80 % including a dominant dynamic power loss. A 6 V constant supply at the slave device is recovered 1.5 ms after a step of 22 mA.
| Type: | Proceedings paper |
|---|---|
| Title: | Adaptive power regulation and data delivery for multi-module implants |
| Event: | 2017 IEEE Biomedical Circuits and Systems Conference (BioCAS) 2017 |
| ISBN-13: | 9781509058037 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/BIOCAS.2017.8325208 |
| Publisher version: | https://doi.org/10.1109/BIOCAS.2017.8325208 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Implants, Uplink, Downlink, Wires, Communication cables, Sensors, Voltage measurement |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10063267 |
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