A 1.06-$\mu$ W Smart ECG Processor in 65-nm CMOS for Real-Time Biometric Authentication and Personal Cardiac Monitoring
| Autor: | Shihui Yin, Sang Joon Kim, Minkyu Kim, Jae-sun Seo, Liu Yang, Chisung Bae, Yu Cao, Deepak Kadetotad |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Authentication
Biometrics business.industry Computer science medicine.medical_treatment 020208 electrical & electronic engineering Feature extraction 02 engineering and technology ComputingMethodologies_PATTERNRECOGNITION CMOS 0202 electrical engineering electronic engineering information engineering medicine ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS Sensitivity (control systems) Electrical and Electronic Engineering Cardiac monitoring business Computer hardware Wearable technology |
| Zdroj: | IEEE Journal of Solid-State Circuits. 54:2316-2326 |
| ISSN: | 1558-173X 0018-9200 |
| Popis: | Many wearable devices employ the sensors for physiological signals (e.g., electrocardiogram or ECG) to continuously monitor personal health (e.g., cardiac monitoring). Considering private medical data storage, secure access to such wearable devices becomes a crucial necessity. Exploiting the ECG sensors present on wearable devices, we investigate the possibility of using ECG as the individually unique source for device authentication. In particular, we propose to use ECG features toward both cardiac monitoring and neural-network-based biometric authentication. For such complex functionalities to be seamlessly integrated in wearable devices, an accurate algorithm must be implemented with ultralow power and a small form factor. In this paper, a smart ECG processor is presented for ECG-based authentication as well as cardiac monitoring. Data-driven Lasso regression and low-precision techniques are developed to compress neural networks for feature extraction by 24.4 $\times $ . The 65-nm testchip consumes 1.06 $\mu \text{W}$ at 0.55 V for real-time ECG authentication. For authentication, equal error rates of 1.70%/2.18%/2.48% (best/average/worst) are achieved on the in-house 645-subject database. For cardiac monitoring, 93.13% arrhythmia detection sensitivity and 89.78% specificity are achieved for 42 subjects in the MIT-BIH arrhythmia database. |
| Databáze: | OpenAIRE |
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