Intruder detection system for passageways and the like
First Claim
1. A system for detecting the presence of an intruder in an enclosed passageway, the system comprising at least one capacitance probe for mounting on a wall of the passageway, said probe including a sensing member in the form of a ridged rod having a first end supported by the wall and a second end protruding into the passageway and not supported by an opposite wall, the number and spacing and the length of said sensing member of said at least one probe sufficient to detect an intruder attempting to pass through the passageway.
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Accused Products
Abstract
The invention is a system for detecting the presence of an intruder in a passageway. In detail, the system includes at least one capacitance probe for mounting on the wall of the passageway, the probe including a sensing member in the form of a rod extending into the passageway, the number, spacing and length of the sensing members sufficient to detect an intruder attempting to pass through the passageway.
17 Citations
6 Claims
- 1. A system for detecting the presence of an intruder in an enclosed passageway, the system comprising at least one capacitance probe for mounting on a wall of the passageway, said probe including a sensing member in the form of a ridged rod having a first end supported by the wall and a second end protruding into the passageway and not supported by an opposite wall, the number and spacing and the length of said sensing member of said at least one probe sufficient to detect an intruder attempting to pass through the passageway.
Specification