The invention discloses a device and a method for monitoring the health of a
computer operator; the device comprises a micro-power bio-
radar front end used for radiating a narrow pulse
signal to the
computer operator in a non-contact way; a breath or
heartbeat echo signal which is reflected by the chest wall of the
computer operator is output into a universal serial
bus (
USB) acquisition card by the micro-power bio-
radar front end through variable
delay and related detection; and output of the
USB acquisition card is connected with a
data processing module used for result displaying and controlling. The method for monitoring the health of the computer operator can be used for detecting the breath
signal and the
heartbeat signal of the computer operator in a non-contact way and
processing by a variable
delay line, adaptive filtering, autocorrelation analysis, power spectrum
estimation and the like, thus effectively inhibiting other movement interference of the operator, accurately monitoring the
respiratory rate and the
heart rate of the computer operator, comparing the
respiratory rate and the
heart rate with the preset threshold values, and giving out an alarm for prompting or automatically turning off a computer so as to force the computer operator to have a rest.