Temperature sensor, device using same, and temperature measurement method
AssigneePanasonic Corporation
InventorHIROSHI YAMANAKA
Life of this patent
Estimating the term…
Abstract
A temperature sensor includes a first infrared measuring means, a second infrared measuring means, and a calculating unit. The first infrared measuring means measures infrared rays emitted from an object and outputs a first voltage. The second infrared measuring means measures infrared rays emitted from around the object and outputs a second voltage. The calculating unit calculates the output temperature of the object from the first voltage, calculates the ambient temperature of the object from the second voltage, and corrects the output temperature based on the ambient temperature to calculate the temperature of the object.
Claims17
A temperature sensor comprising:
- a first infrared measuring unit that measures infrared rays emitted from an object and outputs a first voltage;
- a second infrared measuring unit that measures infrared rays emitted from around the object and outputs a second voltage;
- and
- a calculating unit that calculates temperature of the object by calculating output temperature of the object from the first voltage, calculating ambient temperature of the object from the second voltage, and correcting the output temperature based on the ambient temperature.
A device comprising:
- a first infrared measuring unit that measures infrared rays emitted from an object and outputs a first voltage;
- a second infrared measuring unit that measures infrared rays emitted from around the object and outputs a second voltage;
- a calculating unit that calculates temperature of the object and outputs the temperature as a corrected signal by calculating output temperature of the object from the first voltage, calculating ambient temperature of the object from the second voltage, and correcting the output temperature based on the ambient temperature;
- and
- an operating unit that operates based on the corrected signal from the calculating unit.
A method of measuring temperature of an object, comprising:
- measuring infrared rays emitted from the object and outputting a first voltage;
- measuring infrared rays emitted from around the object and outputting a second voltage;
- calculating output temperature of the object from the first voltage;
- calculating ambient temperature of the object from the second voltage;
- and
- calculating temperature of the object by correcting the output temperature based on the ambient temperature.
Dependencies are inferred from the claim text.