FENCE INTRUSION DETECTION
First Claim
1. A fence intrusion detection system comprising:
- a sensor configured to generate one or more signals indicative of movement of the fence; and
a signal processing system configured to distinguish based on the signals;
between movement of the fence and substantially no movement of the fence; and
between movement of the fence caused by rattling of the fence and movement of the fence caused by climbing of the fence.
2 Assignments
0 Petitions
Accused Products
Abstract
A compact, inexpensive, and reliable fence intrusion detection system may detect activity on a fence and determine the type of activity based on discrimination. The hardware may include a 3-axis accelerometer and a RISC microprocessor. The system may be equipped with a wireless device which enables the system to work remotely and communicate with a base station. An algorithm may detect activity vs. no-activity on the fence. The algorithm may thereafter recognize the type of the activity; such as whether it is due to rattling caused by strong wind or a breach such as a person climbing the fence. The recognition algorithm may be computationally inexpensive and therefore also may be embedded inside a local RISC microcontroller. The system has been tested on different fences and demonstrated an over 90% correct recognition rate.
34 Citations
23 Claims
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1. A fence intrusion detection system comprising:
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a sensor configured to generate one or more signals indicative of movement of the fence; and a signal processing system configured to distinguish based on the signals; between movement of the fence and substantially no movement of the fence; and between movement of the fence caused by rattling of the fence and movement of the fence caused by climbing of the fence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A fence intrusion detection system comprising:
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a sensor configured to generate one or more signals indicative of movement of the fence; a signal processing system configured to distinguish based on the signals between different types of activity which cause movement of the fence; and a wireless transmission system configured to wirelessly transmit information about the different types of activity which is distinguished by the processing system; a rechargeable power source; and wherein the intrusion detection system is configured to power down a substantial portion of the signal processing system when the one or more signals from the sensor indicate that there is substantially no movement of the fence.
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19. A fence intrusion detection system comprising:
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a sensor configured to generate one or more signals indicative of movement of the fence; and a signal processing system configured to distinguish based on the signals between movement of the fence caused by rattling of the fence and movement of the fence caused by climbing of the fence.
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20. A fence intrusion detection system comprising:
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a sensor configured to generate one or more signals indicative of movement of the fence; a compartment housing the sensor; and at least one fastener configured to attach the compartment to a wire in the fence, the fastener having a slot which is wider than the diameter of the wire in the fence. - View Dependent Claims (21, 22, 23)
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Specification