Motion/vibration detection system and method with self-injection locking
First Claim
1. A motion/vibration detection system, comprising:
- at least one transmitter, the at least one transmitter comprising a transmit/receive antenna unit and a first oscillator unit; and
at least one receiver, comprising a receiving unit and a demodulation unit;
wherein,the transmit/receive antenna unit is coupled to or electrically connected to a signal output port of the first oscillator unit, receives an output signal from the first oscillator unit and transmits a detection signal;
the detection signal is reflected from at least one object as a reflected detection signal, which is received by the transmit/receive antenna unit;
the transmit/receive antenna unit injects the reflected detection signal, as an injection signal, into the first oscillator unit and accordingly the first oscillator unit is under a self-injection locking mode;
the receiving unit is coupled to or electrically connected to the demodulation unit and receives the detection signal; and
the demodulation unit demodulates the detection signal received by the receiving unit into a baseband output signal, to extract at least one motion/vibration information of the at least one object.
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Abstract
A motion/vibration detection system and method therefore are provided. The system includes a transmitter and a receiver. The transmitter includes a transmit/receive antenna unit and a first oscillator. The receiver includes a receiving unit and a demodulation unit. The transmit/receive antenna unit receives an output signal from the first oscillator and transmits a detection signal. The detection signal is reflected from at least one object under detection into a reflected detection signal, which is received by the transmit/receive antenna unit. The transmit/receive antenna unit injects the reflected detection signal into the first oscillator and accordingly the first oscillator is under a self-injection locking mode. The receiving unit receives the detection signal. The demodulation unit demodulates the detection signal received by the receiving unit into a baseband output signal, to extract at least one motion/vibration information of the objection under detection.
93 Citations
24 Claims
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1. A motion/vibration detection system, comprising:
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at least one transmitter, the at least one transmitter comprising a transmit/receive antenna unit and a first oscillator unit; and at least one receiver, comprising a receiving unit and a demodulation unit;
wherein,the transmit/receive antenna unit is coupled to or electrically connected to a signal output port of the first oscillator unit, receives an output signal from the first oscillator unit and transmits a detection signal; the detection signal is reflected from at least one object as a reflected detection signal, which is received by the transmit/receive antenna unit; the transmit/receive antenna unit injects the reflected detection signal, as an injection signal, into the first oscillator unit and accordingly the first oscillator unit is under a self-injection locking mode; the receiving unit is coupled to or electrically connected to the demodulation unit and receives the detection signal; and the demodulation unit demodulates the detection signal received by the receiving unit into a baseband output signal, to extract at least one motion/vibration information of the at least one object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A motion/vibration detection method, adapted to a motion/vibration detection system, comprising:
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transmitting a detection signal from a transmit/receive antenna unit, wherein the transmit/receive antenna unit is coupled to or electrically connected to a signal output port of an oscillator unit; making the detection signal reflect from at least one object to become at least one reflected detection signal; receiving the at least one reflected detection signal by the transmit/receive antenna unit; injecting the reflected detection signal, from the transmit/receive antenna unit, as an injection signal, into the oscillator unit so that the oscillator unit is under a self-injection locking mode; receiving the detection signal by a receiver; and demodulating the detection signal received by the receiver into a baseband output signal, to extract at least one motion/vibration information of the at least one object. - View Dependent Claims (23, 24)
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Specification