Intrusion detector with power consumption control and method for intrusion detection
First Claim
1. An intrusion detector comprising:
- a transmitter able to transmit waves into a defined space, said transmitter having a variable output power, a receiver able to receive said waves after reflection, a detector connected to said receiver and able to detect a signal based on a change in said waves after reflection, said detected signal being representative of any motion in said defined space, and a control unit able to determine any change in said detected signal, and to increase said output power of the transmitter in response to such change.
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Accused Products
Abstract
An intrusion detector having a transmitter, receiver, detector, signal processor, and control unit is disclosed. The transmitter is able to transmit waves into a defined space and has a variable output power. The receiver is able to receive those waves after reflection. The detector is connected to the receiver and able to detect a signal based on a change in the waves after reflection, where the detected signal is representative of any motion in the defined space. The signal processor is able to process the detected signal in order to determine if an intrusion has occurred. The control unit is able to determine any change in the detected signal, and to increase the output power of the transmitter in response to such change. A method for performing such intrusion detection is also disclosed.
28 Citations
26 Claims
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1. An intrusion detector comprising:
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a transmitter able to transmit waves into a defined space, said transmitter having a variable output power, a receiver able to receive said waves after reflection, a detector connected to said receiver and able to detect a signal based on a change in said waves after reflection, said detected signal being representative of any motion in said defined space, and a control unit able to determine any change in said detected signal, and to increase said output power of the transmitter in response to such change. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
wherein said larger non-zero value provides an improved level of intrusion-detection capability.
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16. A method for intrusion detection, comprising the steps of:
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transmitting waves into a defined space, receiving said waves after reflection, detecting a signal based on a change of said waves after reflection, said reflected signal being representative of any motion in said defined space, controlling an output power of the wave transmission, and increasing said output power in response to a change in said detected signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
wherein said larger non-zero value provides an improved level of intrusion-detection capability.
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Specification