SYSTEMS AND METHODS FOR USING A POWER CHARACTERISTIC OF AN OPTOELECTRONIC COMPONENT OF A HAZARD DETECTION SYSTEM TO DETERMINE A TEMPERATURE OF AN ENVIRONMENT
First Claim
1. A hazard detection system comprising:
- a chamber body defining a chamber space within an enclosure space;
a light emitting diode operative to emit light into the chamber space;
a light detecting diode operative to detect the light emitted into the chamber space; and
a processing subsystem operative to;
determine a current particular smoke condition within the enclosure space based on the current amount of the light detected by the light detecting diode;
determine a current value of a power characteristic of one of the light emitting diode and the light detecting diode;
determine the current temperature of the one of the light emitting diode and the light detecting diode based on the determined current value of the power characteristic of the one of the light emitting diode and the light detecting diode;
access thermal resistance data indicative of a thermal resistance between a portion of the enclosure space and the one of the light emitting diode and the light detecting diode; and
determine the current temperature of the portion of the enclosure space based on;
the accessed thermal resistance data; and
the determined current temperature of the one of the light emitting diode and the light detecting diode.
2 Assignments
0 Petitions
Accused Products
Abstract
Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.
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Citations
20 Claims
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1. A hazard detection system comprising:
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a chamber body defining a chamber space within an enclosure space; a light emitting diode operative to emit light into the chamber space; a light detecting diode operative to detect the light emitted into the chamber space; and a processing subsystem operative to; determine a current particular smoke condition within the enclosure space based on the current amount of the light detected by the light detecting diode; determine a current value of a power characteristic of one of the light emitting diode and the light detecting diode; determine the current temperature of the one of the light emitting diode and the light detecting diode based on the determined current value of the power characteristic of the one of the light emitting diode and the light detecting diode; access thermal resistance data indicative of a thermal resistance between a portion of the enclosure space and the one of the light emitting diode and the light detecting diode; and determine the current temperature of the portion of the enclosure space based on; the accessed thermal resistance data; and the determined current temperature of the one of the light emitting diode and the light detecting diode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for operating a hazard detection system, wherein the hazard detection system comprises a chamber body defining a chamber space within an enclosure space, an optoelectronic emitter, an optoelectronic detector, and a processing subsystem, the method comprising:
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emitting light from the optoelectronic emitter into the chamber space; detecting at least a portion of the emitted light with the optoelectronic detector; determining, with the processing subsystem, a smoke condition within the enclosure space based on an amount of the emitted light detected by the optoelectronic detector; determining, with the processing subsystem, a value of a power characteristic of one of the optoelectronic emitter during the emitting and the optoelectronic detector during the detecting; determining, with the processing subsystem, the temperature of the one of the optoelectronic emitter and the optoelectronic detector based on the determined value of the power characteristic; accessing, with the processing subsystem, thermal resistance data indicative of a thermal resistance between a portion of the enclosure space and the one of the optoelectronic emitter and the optoelectronic detector; and determining, with the processing subsystem, the temperature of the portion of the enclosure space based on; the accessed thermal resistance data; and the determined temperature. - View Dependent Claims (16, 17, 18, 19)
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20. A method for operating an electronic device, wherein the electronic device comprises a light emitting diode and a chamber body that at least partially defines a chamber space within an environment space, the method comprising:
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while the light emitting diode is emitting light into the chamber space for enabling the determination of a smoke condition within the environment space, detecting the magnitude of a forward voltage of the light emitting diode; calculating the temperature of the light emitting diode using the detected magnitude of the forward voltage of the light emitting diode; and determining the temperature of a portion of the environment space that is external to the chamber space using the calculated temperature of the light emitting diode.
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Specification