Intrusion detection system
First Claim
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1. A method for surveillance, the method comprising:
- sending a signal to sensors on a ground in an area, wherein the sensors are configured to generate electromagnetic radiation in response to the signal to activate the sensors;
detecting current positions of the sensors from the electromagnetic radiation generated by the sensors in response to the signal;
comparing the current positions of the sensors with a set of prior positions of the sensors to form a comparison; and
determining whether an intrusion has occurred in the area using the comparison.
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Abstract
A method and apparatus for surveillance. A signal is sent to sensors on a ground in an area. The sensors are configured to generate electromagnetic radiation in response to the signal to activate the sensors. The current positions of the sensors are detected from the electromagnetic radiation generated by the sensors in response to the signal.
3 Citations
27 Claims
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1. A method for surveillance, the method comprising:
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sending a signal to sensors on a ground in an area, wherein the sensors are configured to generate electromagnetic radiation in response to the signal to activate the sensors; detecting current positions of the sensors from the electromagnetic radiation generated by the sensors in response to the signal; comparing the current positions of the sensors with a set of prior positions of the sensors to form a comparison; and determining whether an intrusion has occurred in the area using the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A sensor system comprising:
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a signal generator configured to generate a signal; sensors configured for placement on a ground in an area, wherein the sensors are configured to generate electromagnetic radiation in response to the signal; an information detector configured to collect information about current positions of the sensors using the electromagnetic radiation; and an analysis system configured to determine whether an intrusion in the area has occurred using the current positions of the sensors; wherein the analysis system is configured to compare the current positions of the sensors with a set of positions for the sensors. - View Dependent Claims (18, 19, 20)
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21. A sensor comprising:
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a structure associated with a material configured to generate electromagnetic radiation using energy from a second signal at a second frequency in response to the material receiving the second signal; and a controller configured to receive a first signal at a first frequency and generate the second signal in response to receiving the first signal; wherein the sensor is configured for placement on a ground in an area; wherein a current position of the sensor is configured to be detected from the electromagnetic radiation and compared to prior positions of the sensor; and wherein an intrusion in the area is configured to be detected using the current position. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification