Very-large-scale integration implementation of a convolutional neural network accelerator for abnormal heartbeat detection

摘要

In this study, a very-large-scale integration implementation of a convolutional neural network (CNN) inference for abnormal heartbeat detection was proposed. Four-lead electrocardiogram signals were used to detect abnormal heartbeat conditions, such as premature ventricular complex. 1D CNNs and fully connected layers were utilised in the proposed chip to achieve high-speed, small-area, and high-accuracy arrhythmia detection. The proposed chip was implemented using a 90-nm complementary metal-oxide-semiconductor process and operated at 125 MHz with a 0.67mm(2) core area. The power consumption was 4.18mW at high-speed operation frequency (125 MHz) and 3.79 mu W at 10 kHz for low-power applications. The detection accuracy was 95.14% based on the MIT-BIH arrhythmia database. Consequently, the properties of high speed, low power, small area, and high accuracy were established in the proposed accelerator chip.