Title:
立体装置の温度計測装置、燃焼機関の温度計測装置、燃焼機関及び立体装置の温度計測方法
Document Type and Number:
Japanese Patent JP6816497
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a temperature measurement device for three-dimensional unit capable of accurately measuring the temperature in a local area of an internal space of a three-dimensional unit such as in-cylinder of an engine which contains gas composition while reducing estimation error of the temperature due to noises.SOLUTION: A terahertz wave TW is transmitted while changing the frequency within a preset range Rm of a frequency width Δfb, which includes fundamental frequency fb within a range of 0.01THz to 10THz, toward measurement area IT in an internal space 10c from a transmission antenna 21, and terahertz wave TW which propagates through the measurement area IT is detected. Transmission quantity PI of the signal is measured from the terahertz wave TW propagating through the measurement area IT. After detecting the frequency fmin of the signal, the transmission quantity PI of which is the lowest in the range Rm of the frequency width Δfb, the temperature Tm of the measurement area IT is calculated from the detected frequency fmin.SELECTED DRAWING: Figure 3
Inventors:
Kakiki Muneatsu
Application Number:
JP2016247735A
Publication Date:
January 20, 2021
Filing Date:
December 21, 2016
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
G01K13/024; G01K11/12; G01M15/02
Domestic Patent References:
| JP2016180722A | ||||
| JP62175648A | ||||
| JP2004251766A | ||||
| JP2016142557A | ||||
| JP2005164453A |
Foreign References:
| CN103033282A |
Attorney, Agent or Firm:
Seiryu International Patent Service Corporation
Takayoshi in the daytime
Masao Sakaizawa
Yuki Yamada
Takayoshi in the daytime
Masao Sakaizawa
Yuki Yamada