Adaptive Power Regulation and Data Delivery for Multi-Module Implants
| Autor: | Yan Liu, Timothy G. Constandinou, Sara S. Ghoreishizadeh, Dorian Haci, Andrea Mifsud |
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| Přispěvatelé: | Wellcome Trust, Imperial College London |
| Rok vydání: | 2017 |
| Předmět: |
Capacitive coupling
Engineering business.industry Wireline Interface (computing) 020208 electrical & electronic engineering 05 social sciences Electrical engineering 050301 education 02 engineering and technology Power (physics) Transmission (telecommunications) Dynamic demand Telecommunications link 0202 electrical engineering electronic engineering information engineering Maximum power transfer theorem business 0503 education |
| Zdroj: | IEEE Biomedical Circuits and Systems (BioCAS) Conference BioCAS |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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