Temporary mute of alarm in wireless alert system
First Claim
1. A security system for monitoring the occurrence of an event at or near a specified location, said system comprising;
- a. a sensor actuable to generate a first electrical signal in response to said event;
b. an alarm device actuable to generate a visibly and/or audibly perceptible signal in response to electrical activation;
c. switch means interposed between said sensor and said alarm device, said switch means having a first state, wherein said first signal actuates said alarm device, and a second state, wherein said first signal does not actuate said alarm device;
d. control means manually operable to change the state of said switch means from said first to said second state; and
e. timing means for establishing a time period following manual operation of said control means, and means for automatically changing the state of said switch means from said second to said first state at the conclusion of said time period.
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Accused Products
Abstract
A security system of the type wherein the occurrence of a monitored event, such as presence or motion of an individual at a first location, triggers an alarm at a second location. The invention provides a means of disabling the alarm during times when the device is subject to repeated actuation under conditions when the cause of the repeated actuation is know, as when workmen are present in the monitored location. An infrared sensor causes an RF transmitter to send a signal to a receiver. Switch means interposed between the receiver and alarm device have first and second states wherein the alarm-actuating signal from the receiver is passed and blocked, respectively, to the alarm. A push button is selectively operable to change the state of the switch means from the first to the second, whereby pressing the button effectively disables the alarm. A pulses counter or other such timing means is actuated by pressing the push button and establishes a time period at the conclusion of which the switch means is changed back to its first state, thereby again enabling the alarm device.
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Citations
17 Claims
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1. A security system for monitoring the occurrence of an event at or near a specified location, said system comprising;
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a. a sensor actuable to generate a first electrical signal in response to said event;
b. an alarm device actuable to generate a visibly and/or audibly perceptible signal in response to electrical activation;
c. switch means interposed between said sensor and said alarm device, said switch means having a first state, wherein said first signal actuates said alarm device, and a second state, wherein said first signal does not actuate said alarm device;
d. control means manually operable to change the state of said switch means from said first to said second state; and
e. timing means for establishing a time period following manual operation of said control means, and means for automatically changing the state of said switch means from said second to said first state at the conclusion of said time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A security system for monitoring the occurrence of an event in or near a first location and registering at a second location the occurrence of said event, said security system comprising:
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a. a sensor operable to generate a first electrical signal in response to the occurrence of said event;
b. an RF transmitter actuable by said first electrical signal to transmit a second electrical signal;
c. an RF receiver operable to receive said second electrical signal and to generate a third electrical signal in response thereto;
d. an alarm device operable to generate a visually and/or audibly perceptible signal in response to reception at said alarm device of said third electrical signal;
e. switch means interposed between said receiver and said alarm device, said switch means having a first state, wherein said third electrical signal passes from said receiver to said alarm device, and a second state, wherein said third electrical signal is blocked from passing from said receiver to said alarm device;
f. manually operable control means for selectively changing said switch means from said first to said second state; and
g. timing means operable upon changing said switch means from said first to said second state to establish a time period at the conclusion of which said switch means is changed from said second back to said first state. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification