Glassbreak alarm recorder for false alarm verification
First Claim
1. A glass breakage detector comprising:
- a. an acoustic transducer for sensing first acoustic waves and for providing a first analog signal representative of the received first acoustic waves, b. an analog to digital converter circuit adapted to convert the first analog signal to a digital signal;
c. processing circuitry adapted to i. process the digital signal to determine if the received first acoustic waves are a result of glass breakage; and
ii. generate an alarm signal when it is determined that the received first acoustic waves are a result of glass breakage; and
d. a memory circuit;
wherein the processing circuitry is adapted to cause the memory circuit to store the digital signal for subsequent retrieval and analysis.
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0 Petitions
Accused Products
Abstract
A glass breakage detector (100) having an acoustic transducer (102) for sensing first acoustic waves (130) and for providing a first analog signal (110) representative of the received first acoustic waves (130), an analog to digital converter circuit (104) adapted to convert the first analog signal (110) to a digital signal (112), processing circuitry (106) adapted to process the digital signal (112) to determine if the received first acoustic waves (130) are a result of glass breakage and generate an alarm signal (116) when it is determined that the received first acoustic waves (130) are a result of glass breakage, and a memory circuit (108), wherein the processing circuitry (106) is adapted to cause the memory circuit (108) to store the digital signal (112) for subsequent retrieval and analysis.
32 Citations
24 Claims
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1. A glass breakage detector comprising:
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a. an acoustic transducer for sensing first acoustic waves and for providing a first analog signal representative of the received first acoustic waves, b. an analog to digital converter circuit adapted to convert the first analog signal to a digital signal;
c. processing circuitry adapted to i. process the digital signal to determine if the received first acoustic waves are a result of glass breakage; and
ii. generate an alarm signal when it is determined that the received first acoustic waves are a result of glass breakage; and
d. a memory circuit;
wherein the processing circuitry is adapted to cause the memory circuit to store the digital signal for subsequent retrieval and analysis. - View Dependent Claims (2, 3, 4, 5)
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6. A security system device comprising:
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a. an alarm device comprising;
i. a first transducer adapted to sense a physical event in a protected space and generate an input signal indicative of sensing the physical event; and
ii. first processing circuitry adapted to analyze the input signal and generate an alarm signal when the input signal meets predefined criteria;
b. an acoustic transducer for sensing first acoustic waves and for providing a first analog signal representative of the received first acoustic waves, c. an analog to digital converter circuit adapted to convert the first analog signal to a digital signal;
d. a memory circuit; and
e. second processing circuitry adapted to cause the memory circuit to store the digital signal for subsequent retrieval and analysis. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of operating a glass breakage detector comprising:
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a. sensing by an acoustic transducer first acoustic waves;
b. providing by the acoustic transducer a first analog signal representative of the sensed first acoustic waves, c. converting the first analog signal to a digital signal;
d. processing the digital signal to determine if the received first acoustic waves are a result of glass breakage;
e. generating an alarm signal when it is determined that the received first acoustic waves are a result of glass breakage; and
f. storing in a memory circuit the digital signal for subsequent retrieval and analysis. - View Dependent Claims (17, 18, 19)
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20. A method of operating a security system device comprising:
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a. sensing by a first transducer a physical event in a protected space;
b. generating an input signal indicative of sensing the physical event;
c. analyzing the input signal and generating an alarm signal when the input signal meets predefined criteria;
d. sensing with an acoustic transducer first acoustic waves;
e. providing a first analog signal representative of the sensed first acoustic waves, f. converting the first analog signal to a digital signal;
g. storing in a memory circuit the digital signal for subsequent retrieval and analysis. - View Dependent Claims (21, 22, 23, 24)
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Specification