Title :
Multistimulator backchannel communication link implemented for safety information and closed-loop power management
Author :
Noorsal, Emilia ; Sooksood, Kriangkrai ; Hongcheng Xu ; Sukumaran, Deepti ; Ortmanns, Maurits
Author_Institution :
Fac. of Electr. Eng., Univ. Teknol. MARA, Permatang Pauh, Malaysia
Abstract :
This paper describes the importance of having a backchannel communication link between a microstimulator ASIC and an external control unit for complete safety closure and closed-loop power management. An example of the overall microstimulation system with backchannel communication link for an epiretinal implant is provided. Additionally, the backchannel operation and protocol between the implant chip and the external control unit are given. The flexible multichannel stimulator was implemented and successfully tested in a 0.35 μm AMS HVCMOS technology. A test measurement setup is developed to test the functionality of bidirectional communication between the fabricated stimulator ASIC and the external control unit. Conducted measurement results on erroneous data packet, non-accomplished charge balancing and supply voltage adaptation validate the functionality of the bidirectional communication system.
Keywords :
application specific integrated circuits; biomedical electronics; biomedical equipment; eye; prosthetics; telecommunication links; vision; HVCMOS technology; backchannel operation-protocol; bidirectional communication functionality; bidirectional communication system; closed-loop power management; epiretinal implant; erroneous data packet; external control unit; flexible multichannel stimulator; microstimulation system; microstimulator ASIC; multistimulator backchannel communication link; nonaccomplished charge balancing; safety closure power management; safety information; stimulator ASIC; supply voltage adaptation; test measurement setup; Application specific integrated circuits; Electric potential; Electrodes; Implants; Monitoring; Radio frequency; Voltage control;
Conference_Titel :
Control System, Computing and Engineering (ICCSCE), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-5685-2
DOI :
10.1109/ICCSCE.2014.7072798
