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A 1.8mW Perception Chip with Near-Sensor Processing Scheme for Low-Power AIoT Applications

  • Zheyu Liu
  • , Erxiang Ren
  • , Li Luo
  • , Qi Wei
  • , Xing Wu
  • , Xueqing Li
  • , Fei Qiao*
  • , Xin Jun Liu
  • , Huazhong Yang
  • *Corresponding author for this work
  • Tsinghua University
  • Beijing Jiaotong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the past few years, the demand for intelligence of IoT front-end devices has dramatically increased. However, such devices face challenges of limited on-chip resources and strict power or energy constraints. Recent progress in binarized neural networks has provided promising solutions for front-end processing system to conduct simple detection and classification tasks by making trade-offs between the processing quality and the computation complexity. In this paper, we propose a mixed-signal perception chip, in which an ADC-free 32x32 image sensor and a BNN processing array are directly integrated with a 180nm standard CMOS process. Taking advantage of the ADC-free processing architecture, the whole processing system only consumes 1.8mW power, while providing up to 545.4 GOPS/W energy efficiency. The implementation performance and energy efficiency are comparable with the state-of-the-art designs in much more advanced CMOS technologies. This work provides a promising alternative for low-power IoT intelligent applications.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
PublisherIEEE Computer Society
Pages447-452
Number of pages6
ISBN (Electronic)9781538670996
DOIs
StatePublished - Jul 2019
Event18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019 - Miami, United States
Duration: 15 Jul 201917 Jul 2019

Publication series

NameProceedings of IEEE Computer Society Annual Symposium on VLSI, ISVLSI
Volume2019-July
ISSN (Print)2159-3469
ISSN (Electronic)2159-3477

Conference

Conference18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
Country/TerritoryUnited States
CityMiami
Period15/07/1917/07/19

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Artificial Intelligence
  • Low power
  • Near-sensor processing
  • Smart sensor

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