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UEC Int’l Mini-Conference No.53 81

Non-Contact Heart Rate Monitoring of Anesthetized Laboratory

Animals Using Doppler Radar Technology

Ta Hoai Nam , Nguyen Huu Son, , Masaki Kurosawa , Guanghao Sun
∗
Department of Mechanical Engineering and Intelligent Systems
The University of Electro-Communications Tokyo, Japan

Keywords: Non-contact sensors, vital signs, 24GHz radar

Abstract

DOPPLER radar was first used for contactless human vital signs detection in 1975. Monitoring
vital signs in small laboratory animals like Cat is crucial for physiological studies, therapy develop-
ment, and disease understanding. Traditional invasive methods, such as telemetry sensor implants,
provide accurate data but cause discomfort and limit mobility. Non-invasive contact methods like
ECG and PPG avoid these issues but still require. attaching sensors, which can distress the animals.
Recent advancements in non-contact techniques, including CW-Doppler, FMCW, and UWB radar,
allow for accurate monitoring of vital signs without disturbing the animals’ natural behavior. These
innovations offer a more humane and effective approach to vital sign monitoring in small animals.
Radar can detect vital signs thanks to the modulation effect caused by a cat’s chest movements
associated with respiration and heart muscle contractions

∗
The author is supported by (MICH) MEXT Scholar-
ship.