An Indoor-Monitoring LiDAR Sensor for Patients with Alzheimer Disease Residing in Long-Term Care Facilities
- 주제(키워드) Alzheimer , APD , CMOS , LiDAR , LTCF , NPU , optoelectronic
- 주제(기타) Chemistry, Analytical; Engineering, Electrical & Electronic; Instruments & Instrumentation
- 설명문(일반) [Joo, Ji-Eun; Hu, Yu; Kim, Sujin; Kim, Hyunji; Park, Sunyoung; Kim, Ji-Hoon; Park, Sung-Min] Ewha Womans Univ, Dept Elect & Elect Engn, Seoul 03760, South Korea; [Joo, Ji-Eun; Hu, Yu; Kim, Sujin; Kim, Hyunji; Park, Sunyoung; Kim, Ji-Hoon; Park, Sung-Min] Ewha Womans Univ, Grad Program Smart Factory, Seoul 03760, South Korea; [Kim, Younghyun] Univ Wisconsin, Dept Elect & Comp Engn, 1415 Johnson Dr, Madison, WI 53706 USA
- 등재 SCIE, SCOPUS
- OA유형 gold, Green Published
- 발행기관 MDPI
- 발행년도 2022
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000203057
- 본문언어 영어
- Published As https://doi.org/10.3390/s22207934
- PubMed https://pubmed.ncbi.nlm.nih.gov/36298279
초록/요약
This paper introduces an indoor-monitoring LiDAR sensor for patients with Alzheimer disease residing in long-term care facilities (LTCFs), and this sensor exploits an optoelectronic analog front-end (AFE) to detect light signals from targets by utilizing on-chip avalanche photodiodes (APDs) realized in a 180 nm CMOS process and a neural processing unit (NPU) used for motion detection and decisions, especially for incidents of falls occurring in LTCFs. The AFE consists of an on-chip CMOS P+/N-well APD, a linear-mode transimpedance amplifier, a post-amplifier, and a time-to-digital converter, whereas the NPU exploits network sparsity and approximate processing elements for low-power operation. This work provides a potential solution of low-cost, low-power, indoor-monitoring LiDAR sensors for patients with Alzheimer disease in LTCFs.
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