Energy efficient alarm system and regulative central control unit
First Claim
1. An alarm system operated under a low rate of power consumption and regulated by a central control unit equipped to monitor multiple sensory devices operatively associated therewith and to regulatively trigger an alarm signal in response to sensing signals detected by said sensing devices, said system comprising:
- A) sensing means for detecting and emitting a sensing signal in response to an environmental disturbance;
B) a central control unit for receiving and monitoring the sensing signal which unit includes;
1) first circuit means for generating a first control signal in response to sensing means;
2) alarm detection means for outputting an alarm detection signal in response to said first control signal;
3) means for outputting an alarm triggering signal in response to said alarm detection signal; and
4) second circuit means responsive to said alarm triggering signal for generating an alarming signal; and
C) a source of D.C. power for powering said control unit;
with said means for generating a first control signal comprising a normally off mosfet, said mosfet having a gate, a source, and a drain, said mosfet having its gate connected to said source of D.C. power and its drain connected to said alarm detection means, at least one intrusion sensing device having a normally closed switch connected to the gate of said mosfet, at least one intrusion sensing device having a normally open switch connected to the drain of said mosfet, whereby said first control signal will be generated in response to an intrusion detected by any of said intrusion sensing devices.
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Accused Products
Abstract
An alarm system includes an electronic central controller or control unit with an internal intrusion sensor. The controller is powered by a single nine volt battery. The system can be expanded by adding auxiliary sensors such as sound discriminators, glass breakage sensors and other low power battery operated sensors. The controller can perform all of the functions normally associated with large A.C. powered systems such as factory adjustable entry/exit and reset delays, entrance monitoring, and controlling of lights and message dialers. The system can be adapted for use in mobile environments.
193 Citations
14 Claims
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1. An alarm system operated under a low rate of power consumption and regulated by a central control unit equipped to monitor multiple sensory devices operatively associated therewith and to regulatively trigger an alarm signal in response to sensing signals detected by said sensing devices, said system comprising:
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A) sensing means for detecting and emitting a sensing signal in response to an environmental disturbance; B) a central control unit for receiving and monitoring the sensing signal which unit includes; 1) first circuit means for generating a first control signal in response to sensing means; 2) alarm detection means for outputting an alarm detection signal in response to said first control signal; 3) means for outputting an alarm triggering signal in response to said alarm detection signal; and 4) second circuit means responsive to said alarm triggering signal for generating an alarming signal; and C) a source of D.C. power for powering said control unit; with said means for generating a first control signal comprising a normally off mosfet, said mosfet having a gate, a source, and a drain, said mosfet having its gate connected to said source of D.C. power and its drain connected to said alarm detection means, at least one intrusion sensing device having a normally closed switch connected to the gate of said mosfet, at least one intrusion sensing device having a normally open switch connected to the drain of said mosfet, whereby said first control signal will be generated in response to an intrusion detected by any of said intrusion sensing devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A control unit operating under a D.C. power source for an electronic alarm system comprising:
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A) means for receiving an intrusion detection signal and outputting a first control signal in response thereto;
first circuit means connected to receive said first control signal and outputting a second control signal in response thereto;B) timing circuit means connected to receive said second control signal and to output an alarm detection signal in response thereto after a predetermined delay; C) second circuit means responsive to said alarm signal for generating an alarming signal; and D) means for indicating operational status of said unit which includes indicating means connected to said D.C. power source, said indicating means comprised of an LED, said LED connected in series with a mosfet, whereby said mosfet turns off said LED after a predetermined period following activation of said alarm system. - View Dependent Claims (13, 14)
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Specification