Use of PC mouse components for continuous measuring of human heartbeat.
A new technology for remote measuring of vibration sources was recently developed for industrial, medical, and security-related applications [Int. Appl. Patent No: PCT/IL2008/001008]. It requires relatively expensive equipment, such as high-speed complementary metal oxide semiconductor (CMOS) sensors and customized optics. In this paper, we demonstrate how the usage of a simple personal computer (PC) mouse as an optical system composed of a low-power laser and a CMOS circuitry on the same integrated circuit package, can be used to monitor heartbeat from the wrist. The method is based on modifying the mouse optical system in such a way that it will recognize temporal change in skin's vibration profile, generated due to the heart pulses, as mouse movement. The tests that were carried out show a very good correlation between the heartbeat rate measured from human skin and the reference values taken manually.
Faculty of Engineering, Bar Ilan University, Ramat Gan, 52900, Israel.
Yevgeny
Y
Beiderman
Roy
R
Talyosef
Daniel
D
Yeori
Javier
J
Garcia
Vicente
V
Mico
Zeev
Z
Zalevsky
D002138:Calibration; D004867:Equipment Design; D006339:Heart Rate; D006801:Humans; D007834:Lasers; D008838:Microcomputers; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D011674:Pulse / Q000295:instrumentation* / Q000379:methods*; D058998:Remote Sensing Technology / Q000295:instrumentation* / Q000379:methods; D012666:Semiconductors; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D012867:Skin; D014732:Vibration; D014953:Wrist