Low intensity flame detection system
OwnerVladimir A. Danilychevinventor
Life of this patent
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Abstract
A smoking detection device comprising a smoke sensor for generating an electrical signal in response to the detection of smoke, and an optical sensor for generating an electrical signal in response to the detection of ultraviolet radiation in a prescribed range. The smoking detection device may further comprise an alarm unit which is electrically connected to the smoke and optical sensors for generating an alarm signal in response to any one of the electrical signals generated by the smoke and optical sensors. The optical sensor is configured to sense ultraviolet radiation in a spectral range of from about 185 nanometers to about 260 nanometers, and of an intensity in a range of about 1 picowatt per square centimeter to about 1 nanowatt per square centimeter.
Claims30
A detection device for detecting a low intensity flame used to initiate a smoking activity, the detection device comprising:
- an optical sensor configured to sense ultraviolet radiation in a spectral range of from about 185 nanometers to about 260 nanometers and in an intensity range of from about 1 picowatt per square centimeter to about 1 nanowatt per square centimeter, the optical sensor being operative to generate an electrical signal in response to the detection of ultraviolet radiation in the spectral and intensity ranges.
A detection system for detecting a low intensity flame used to initiate a smoking activity, the detection system comprising:
- at least two detection devices, each of the detection devices comprising:
- an optical sensor configured to sense ultraviolet radiation in a spectral range of from about 185 nanometers to about 260 nanometers and in an intensity range of from about 1 picowatt per square centimeter to about 1 nanowatt per square centimeter, the optical sensor being operative to generate an electrical signal in response to the detection of ultraviolet radiation in the spectral and intensity ranges;
- the optical sensor including an optical concentrator for causing the optical sensor to sense ultraviolet radiation at a prescribed spacial detection angle;
- and
- a receiver unit in electrical communication with the detection devices and operable to generate an alarm signal in response to the electrical signal generated by the optical sensor.
A method for detecting a low intensity flame used to initiate a smoking activity in a defined area, the method comprising the steps of:
- (a) providing at least one detection device having an optical sensor which is configured to sense ultraviolet radiation in a spectral range of from about 185 nanometers to about 260 nanometers and in an intensity range of from about 1 picowatt per square centimeter to about one nanowatt per square centimeter, and is operative to generate an electrical signal in response to the detection of ultraviolet radiation in the spectral and intensity ranges;
- (b) positioning the detection device such that the optical sensor is capable of sensing ultraviolet radiation in the spectral and intensity ranges within the defined area;
- and
- (c) generating an alarm signal in response to the electrical signal generated by the optical sensor.
Dependencies are inferred from the claim text.