Radiation thermometer, temperature measurement method, and temperature measurement program
AssigneeHoriba, Ltd.
InventorsSho Fujino, Naoyuki Matsumoto, Yasuo Furukawa
Life of this patent
Estimating the term…
Abstract
A radiation thermometer includes two infrared detectors and a temperature calculator. The infrared detectors each have a predetermined measurement visual field and detect the amount of infrared rays incident from the measurement visual field. The temperature calculator calculates the temperature of a measurement target region based on the amounts of infrared rays detected by the respective infrared detectors. The measurement target region is included in the measurement visual fields of the respective infrared detectors, and the sizes of the respective measurement visual fields are set to be different from each other with respect to the measurement target region.
Claims12
A radiation thermometer configured to measure a temperature of a measurement target region in an object, the radiation thermometer comprising:
- two infrared detectors each having a predetermined measurement visual field and configured to detect an amount of infrared rays incident from the measurement visual field;
- and
- a temperature calculator configured to calculate the temperature of the measurement target region based on the amounts of infrared rays detected by the respective infrared detectors, wherein
- detectable infrared wavelength bands detectable by the respective infrared detectors are different from each other, and
- the temperature calculator calculates the temperature of the measurement target region based further on a ratio between emissivity and transmittance of infrared rays in the measurement target region.
A temperature measurement method for measuring a temperature of a measurement target region in an object, the temperature measurement method comprising:
- calculating the temperature of the measurement target region based on the amounts of multiple infrared rays, and
- setting a predetermined measurement visual field including the measurement target region;
- and detecting an amount of infrared rays incident from the measurement visual field in a predetermined first detectable infrared wavelength band and detecting the amount of infrared rays in a second detectable infrared wavelength band different from the first detectable infrared wavelength band, wherein
- calculating the temperature of the measurement target region is further based on a ratio between emissivity and transmittance of infrared rays in the measurement target region.
A non-transitory program recording media that is recorded a temperature measurement program used to measure a temperature of a measurement target region in an object, the temperature measurement program causing a computer to implement a function as a temperature calculator:
- the temperature calculator is configured to:
- calculate the temperature of the measurement target region based on a first amount of detected infrared rays obtained by detecting an amount of infrared rays incident from a predetermined measurement visual field including the measurement target region in a predetermined first detectable infrared wavelength band and on a second detected amount of infrared rays obtained by detecting the amount of infrared rays in a second detectable infrared wavelength band different from the first detectable infrared wavelength band, wherein
- calculating the temperature of the measurement target region is further based on a ratio between emissivity and transmittance of infrared rays in the measurement target region.
A radiation thermometer configured to measure a temperature of a measurement target region in an object, the radiation thermometer comprising:
- two infrared detectors each having a predetermined measurement visual field and configured to detect an amount of infrared rays incident from the measurement visual field;
- and
- a temperature calculator configured to calculate the temperature of the measurement target region based on the amounts of infrared rays detected by the respective infrared detectors, wherein
- the measurement target region is included in the measurement visual fields of the respective infrared detectors, and sizes of the respective measurement visual fields are set to be different from each other with respect to the measurement target region, and
- the temperature calculator calculates the temperature of the measurement target region based on a ratio of a size of the measurement target region to the measurement visual field of each of the respective infrared detectors besides the amount of infrared rays detected by the respective infrared detectors.
A radiation thermometer configured to measure a temperature of a measurement target region in an object, the radiation thermometer comprising:
- two infrared detectors each having a predetermined measurement visual field and configured to detect an amount of infrared rays incident from the measurement visual field;
- and
- a temperature calculator configured to calculate the temperature of the measurement target region based on the amounts of infrared rays detected by the respective infrared detectors, wherein
- the measurement target region is included in the measurement visual fields of the respective infrared detectors, and reflectances of infrared rays in the measurement target region of the respective infrared detectors are set to be different from each other.
Dependencies are inferred from the claim text.