Electronic system for activating a mechanical fire siren
First Claim
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1. A device for activating and cycling a mechanical fire siren, said device comprising:
- a plurality of input means for producing first signals when a predetermined event occurs, wherein each input means is connected between two terminals of an energy source which is either derived by said device or by an external power source;
a delay means, connected to said plurality of input means, for delaying said first signals for a predetermined period of time and producing a delayed version of said first signal;
an activation circuit means, connected to said delay means to receive said delayed version of said first signal, for producing an output pulse whenever any one of said input means produces said first signal, said activation circuit means ignores the length of time that any one of said input means produces said first signal so that should any of said plurality of input means become disabled or seized, the activation circuit means will still produce said output pulse should another first signal be detected form any one of the other input means;
a latching means, connected to activation circuit means, for latch and holding said output pulse until a reset signal is received;
a cycles per alarm means for controlling the number of siren cycles pre alarm, where the number of cycles per alarm is adjustable;
a siren gain circuit means for controlling the gain time of the siren according to a gain time clock signal;
a 24 hour clock circuit having a seven segment display for displaying hours and minutes, wherein said 24 hour clock provides the gain time clock signal to said siren gain circuit means;
a test circuit means, connected to said 24 hour clock, for proving a test signal at a predetermine time each day;
a relay attached to said siren for controlling the supply of power to the siren;
a control means, connected to said relay, said test circuit means, said activation circuit means, said siren gain circuit means, said cycle per alarm means and said latching means, for energizing said relay thereby causing the mechanical fire siren to sound when the output pulse is received from said latching means and for sending a reset signal to said latching means after the mechanical fire siren has completed a predetermined number of cycles, and for energizing said relay when said test signal is received from said test circuit means thereby causing said mechanical fire siren to be triggered for one cycle.
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Abstract
An electronic device designed to activate a municipal mechanical fire siren upon the receipt of fire from any one of a plurality of inputs, where said fire siren is used to alert fire personnel of an emergency. In addition, through the use of a built in 24 hour clock, the device can operate the siren at noon each day, as a means of automatic testing. The gain time of the siren cycle and the number of cycles per alarm can be preset by the user.
13 Citations
1 Claim
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1. A device for activating and cycling a mechanical fire siren, said device comprising:
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a plurality of input means for producing first signals when a predetermined event occurs, wherein each input means is connected between two terminals of an energy source which is either derived by said device or by an external power source; a delay means, connected to said plurality of input means, for delaying said first signals for a predetermined period of time and producing a delayed version of said first signal; an activation circuit means, connected to said delay means to receive said delayed version of said first signal, for producing an output pulse whenever any one of said input means produces said first signal, said activation circuit means ignores the length of time that any one of said input means produces said first signal so that should any of said plurality of input means become disabled or seized, the activation circuit means will still produce said output pulse should another first signal be detected form any one of the other input means; a latching means, connected to activation circuit means, for latch and holding said output pulse until a reset signal is received; a cycles per alarm means for controlling the number of siren cycles pre alarm, where the number of cycles per alarm is adjustable; a siren gain circuit means for controlling the gain time of the siren according to a gain time clock signal; a 24 hour clock circuit having a seven segment display for displaying hours and minutes, wherein said 24 hour clock provides the gain time clock signal to said siren gain circuit means; a test circuit means, connected to said 24 hour clock, for proving a test signal at a predetermine time each day; a relay attached to said siren for controlling the supply of power to the siren; a control means, connected to said relay, said test circuit means, said activation circuit means, said siren gain circuit means, said cycle per alarm means and said latching means, for energizing said relay thereby causing the mechanical fire siren to sound when the output pulse is received from said latching means and for sending a reset signal to said latching means after the mechanical fire siren has completed a predetermined number of cycles, and for energizing said relay when said test signal is received from said test circuit means thereby causing said mechanical fire siren to be triggered for one cycle.
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Specification
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Current AssigneeMichael J. Roosa
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Original AssigneeMichael J. Roosa
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InventorsRoosa, Michael J.
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Primary Examiner(s)Groody, James J.
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Assistant Examiner(s)Flynn, Nathan J.
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Application NumberUS08/366,264Time in Patent Office376 DaysField of Search340/281, 340/290, 340/297, 340/309.3, 340/309.4, 340/309.5, 340/309.15, 340/287US Class Current340/309.8CPC Class CodesG08B 3/10 using electric transmission...
