US Patent No. 9,846,226

MOTION DETECTION DEVICE


Patent No. 9,846,226
Issue Date December 19, 2017
Title Motion Detection Device
Inventorship Tzyy-Sheng Horng, Kaohsiung (TW)
Fu-Kang Wang, Kaohsiung (TW)
Yen-Chen Chiu, Kaohsiung (TW)
Assignee National Sun Yat-sen University, Kaohsiung (TW)

Claim of US Patent No. 9,846,226

1. A motion detection device, comprising:
a first antenna, receiving a first signal generated through a second signal reflected by a target object;
a voltage-controlled oscillator, receiving a frequency adjustment signal and one of the first signal and the second signal,
so as to generate an oscillating signal according to the frequency adjustment signal and the one of the first signal and the
second signal;

a phase detector, coupled to the voltage-controlled oscillator, receiving the oscillating signal and another one of the first
signal and the second signal and generating a first phase output signal and a second phase output signal, wherein the first
antenna is coupled to one of a phase detector and a voltage-controlled oscillator, so as to output the first signal to the
phase detector or the voltage-controlled oscillator; and

a signal processing unit, coupled to the phase detector and the voltage-controlled oscillator, receiving the first phase output
signal and the second phase output signal, outputting the frequency adjustment signal to the voltage-controlled oscillator
and estimating motion parameters of the target object according to the first phase output signal and the second phase output
signal.