Self-sustaining alarm transmitter device
First Claim
1. Alarm condition transmitter device comprising rechargeable storage means for storing electrical charge;
- energy conversion means connected to said storage means for connecting a predetermined form of energy into electrical energy and for charging said storage means;
output circuit means for transmitting an alarm signal when energized; and
switch means connecting said storage means to said output circuit means for energizing the latter with the charge stored on the former only upon the occurrence of an alarm condition and for disconnecting all loads from said storage means prior to the occurrence of an alarm condition, whereby said storage means is continuously charged when said predetermined form of energy is available and is in standby mode for energizing said output circuit means upon the occurrence of an alarm condition, and whereby said storage means is charged during non-alarm conditions by removal of all loading conditions therefrom until an alarm condition occurs.
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Abstract
An alarm transmitter device includes a storage element which stores electrical charge and which energizes an output transmitting circuit upon the occurrence of an alarm condition. To maintain the storage element at full charge or in ready standby mode, a trickle charging circuit is provided which includes an energy conversion device for converting solar energy, broadcast electromagnetic energy, heat energy or the like into an electrical current suitable for trickle charging the storage element. After the storage element is substantially discharged, subsequent to an occurrence of an alarm condition, a battery or other source of electrical energy is connectable to terminals connected to the storage element for initially rapidly recharging the storage element to the fully charged state.
43 Citations
9 Claims
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1. Alarm condition transmitter device comprising rechargeable storage means for storing electrical charge;
- energy conversion means connected to said storage means for connecting a predetermined form of energy into electrical energy and for charging said storage means;
output circuit means for transmitting an alarm signal when energized; and
switch means connecting said storage means to said output circuit means for energizing the latter with the charge stored on the former only upon the occurrence of an alarm condition and for disconnecting all loads from said storage means prior to the occurrence of an alarm condition, whereby said storage means is continuously charged when said predetermined form of energy is available and is in standby mode for energizing said output circuit means upon the occurrence of an alarm condition, and whereby said storage means is charged during non-alarm conditions by removal of all loading conditions therefrom until an alarm condition occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- energy conversion means connected to said storage means for connecting a predetermined form of energy into electrical energy and for charging said storage means;
Specification