An addressable UHF EPCGlobal Class1 Gen2 Sensor IC for wireless IOP monitoring on contact lens

Author

Jin-Chern Chiou ; Shun-Hsi Hsu ; Cheng-Kai Kuei ; Tsung-Wei Wu

Author_Institution

Dept. of Electr. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan

fYear

2015

fDate

27-29 April 2015

Firstpage

1

Lastpage

4

Abstract

In this paper, an addressable UHF EPCGlobal Class1 Gen2 sensor IC for wireless intraocular pressure (IOP) monitoring on contact lens sensor device is proposed. The proposed sensor IC consists of RFID Analog/RF Front End, capacitive sensor readout circuit, and digital processing unit. RFID Analog/RF front end is used for power management and data transmission. Sensor Readout Circuit will convert the measured capacitor value to digital format for digital processing unit. Digital processing unit is used as processor not only for sensor value processing obtained from the sensor readout circuit, but also for bidirectional communication between RFID reader and sensor IC. This sensor IC architecture combined with specific sensor and corresponding sensor readout circuit can be widely used as noninvasive biomedical sensor devices and systems. Wireless communication and sensor data transmission are implemented with UHF RFID technology, providing much flexibility and can reduce self-developed firmware effort for this architecture in the future.

Keywords

UHF integrated circuits; analogue-digital conversion; biomedical electronics; biomedical telemetry; body sensor networks; capacitive sensors; contact lenses; electronic data interchange; eye; patient monitoring; pressure sensors; radiofrequency identification; readout electronics; satellite computers; telemedicine; RF front end; RFID analog; RFID reader-sensor IC bidirectional communication; UHF RFID technology; addressable UHF EPCGlobal Class1 Gen2 sensor IC; capacitive sensor readout circuit; contact lens sensor device; digital format conversion; digital processing unit; measured capacitor value conversion; noninvasive biomedical sensor device; noninvasive biomedical system; power management; self-developed firmware effort reduction; sensor IC architecture; sensor data transmission; sensor value processing; wireless IOP monitoring; wireless communication; wireless intraocular pressure monitoring; Integrated circuits; Lenses; Monitoring; Radio frequency; Radiofrequency identification; Wireless communication; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Design, Automation and Test (VLSI-DAT), 2015 International Symposium on

Conference_Location

Hsinchu

Type

conf

DOI

10.1109/VLSI-DAT.2015.7114573

Filename

7114573