A comparative study of human motion using ultrasonic and seismic sensors

Human motion detection is one of the key challenges in most of the security applications. This paper studies the potentials of passive sensors with reference to the human motion analysis. Different human motion events are analyzed in the indoor lab and the outdoor environment using accelerometer and acoustic sensors. The short-time Fourier transform (STFT) technique is used to evaluate the performances of these sensors. The test results for different human activities in the indoor and the outdoor environments are presented and discussed.