Electronic intrusion detection system for monitored environments
First Claim
1. An electronic intrusion detection system for at least one monitored environment, comprising:
- at least one electronic sensor (1a, 1b, 1c) responsive to movements occurring in said environment and capable of modifying at least one of the significant characteristics of its output electric signal in response to the presence of a moving body in said monitored environment;
at least a first alarm circuit (10a, 10b, 10c) connected to said sensor and capable of generating an alarm signal (ALARM) when said modification meets a predetermined condition;
and an alarm control unit (30) adapted to receive said alarm signal (ALARM);
characterized in that said system comprises additional transducer means (20a, 20b, 20c) for continuously converting said modification of the output from said electric sensor (1a, 1b, 1c) into a signal that can be perceived by a human being, said perceivable signal being transmitted to said alarm control unit (30).
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Accused Products
Abstract
An electronic intrusion detection system for monitoring environments having at least one electronic sensor responsive to movements occurring in the environment and adapted to modify at least one characteristic of its electrical output in response to the presence of a moving body in the environment. An alarm is signaled when the modification meets a predetermined condition. A transducer is provided for continuously converting the modification of the output from the electric sensor into a signal that can be perceived by a human being. An alarm control unit connected to the alarm and transducer forwards the signals to the surveillance personnel through a telephone line.
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Citations
15 Claims
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1. An electronic intrusion detection system for at least one monitored environment, comprising:
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at least one electronic sensor (1a, 1b, 1c) responsive to movements occurring in said environment and capable of modifying at least one of the significant characteristics of its output electric signal in response to the presence of a moving body in said monitored environment; at least a first alarm circuit (10a, 10b, 10c) connected to said sensor and capable of generating an alarm signal (ALARM) when said modification meets a predetermined condition; and an alarm control unit (30) adapted to receive said alarm signal (ALARM); characterized in that said system comprises additional transducer means (20a, 20b, 20c) for continuously converting said modification of the output from said electric sensor (1a, 1b, 1c) into a signal that can be perceived by a human being, said perceivable signal being transmitted to said alarm control unit (30). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification