Title :
A fast FPW allergy analyzer prototype for point of care (POC)
Author :
Hsu, Chia-Hao ; Tsai, Yue-Da ; Chen, Yun-Chi ; Lee, Ming-Chih ; Huang, I-Yu ; Wang, Chua-Chin
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
An IgE antigen concentration analyzer system using a pair of two-port FPW (flexural plate-wave) sensors is proposed in this paper. The proposed system utilizes a frequency-shift readout method based on a peak detecting scheme to measure the resonant frequency shift. The frequency-shift readout circuit is integrated on silicon composed of a linear frequency generator, two peak detectors, two registers, and a subtractor. The frequency sweep range is from in 0.5 MHz to 11.6 MHz according to the characteristics of the FPW allergy biosensor. The sensitivity of the peak detector is 5 mV. The proposed frequency-shift readout circuit is verified by a prototype on PCB, where the maximal power consumption is 54 mW@5 kHz clock.
Keywords :
acoustic waves; biomedical electronics; biomedical measurement; biosensors; detector circuits; diseases; low-power electronics; printed circuits; readout electronics; FPW allergy analyzer prototype; FPW allergy biosensor; IgE antigen concentration analyzer system; PCB; POC; flexural plate-wave sensors; frequency 0.5 MHz to 11.6 MHz; frequency sweep; frequency-shift readout circuit; frequency-shift readout method; immunoglobulin E; linear frequency generator; peak detectors; point of care; power consumption; registers; resonant frequency shift; subtractor; two-port FPW sensors; voltage 5 mV; Biosensors; Detectors; Frequency estimation; Immune system; Resonant frequency; FPW; IgE antigen measurement; frequency-shift readout circuit; point of care (POC); resonant frequency;
Conference_Titel :
Consumer Electronics (ICCE), 2012 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4577-0230-3
DOI :
10.1109/ICCE.2012.6161803
