System and method of detecting and analyzing a threat in a confined environment
AssigneeBattelle Memorial Institute
InventorsJames R. Skorpik, Michael S. Hughes, Eric G. Gonzalez
Life of this patent
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Abstract
A system and method of detecting and analyzing a threat in a confined environment is disclosed. An audio board detects and analyzes audio signals. A RF board transmits the signals for emergency response. A battery provides power to the audio board and the RF board. The audio board includes a microcontroller with at least one band-pass filter for distinguishing between a threat and a non-threat event and for measuring or counting pulses if the event is a threat.
Claims22
A system for detecting and analyzing a threat in a confined environment comprising:
- a. a microphone for receiving acoustic signals from the confined environment;
- b. an amplifier to increase amplitude of the audio signals;
- c. a first band-pass filter whose output contains energy within a first frequency range;
- d. a second band-pass filter whose output contains energy within a second frequency range;
- e. an analog-to-digital converter for digitizing the amplified and filtered signals to produce digital waveforms;
- and
- f. a microcontroller to receive and analyze the digital signals, wherein the microcontroller computes signal energy to distinguish between a threat and a non-threat event and measure or count pulses if the event is a threat.
A device for detecting and analyzing a threat in a confined environment comprising:
- a. an audio board for detection and analysis of audio signals;
- b. a RF board for transmitting the signals for emergency response;
- and
- c. a battery for providing power to the audio board and the RF board,
- wherein the audio board includes a microcontroller with at least one band-pass filter for distinguishing between a threat and a non-threat event and for measuring or counting pulses if the event is a threat.
A method of detecting and analyzing a threat in a confined environment comprising:
- a. receiving one or more acoustic signals from the confined environment;
- b. measuring energy in a frequency range using a first band-pass filter;
- and
- c. measuring pulses in a time domain using a second band-pass filter.
A method of detecting and analyzing a threat in a confined environment comprising:
- a. receiving audio signals from the confined environment;
- and
- b. measuring or counting a number of zero crossings of the signals in at least one of a plurality of separate time interval windows to distinguish between a threat and a non-threat event and a type of threat.
A system for detecting and analyzing a threat in a confined environment comprising:
- a. a microphone for receiving acoustic signals from the confined environment;
- b. a microcontroller with at least one band-pass filter to computer energy of the signals for distinguishing between a threat and a non-threat event;
- and
- c. a transceiver for transmitting the signals for emergency response.
Dependencies are inferred from the claim text.