| 摘要 |
PROBLEM TO BE SOLVED: To highly accurately measure the temperature of a cooking vessel being an object of temperature measurement or detection in a range from a low temperature to a high temperature for example even if the cooking vessel is a pan belonging to non-gray substances, a pan belonging to gray substances, or a low-emissivity type pan. SOLUTION: Based on results of the comparison between temperatures T1 and T2 acquired by using the value of an infrared intensity signal (infrared intensity "A") output from a first infrared light receiving element 19, and the value of an infrared intensity signal (infrared intensity "B") output from a second infrared light receiving element 21, and between the voltage value "Vout" of a received light pulse signal output from an infrared light receiving element 28 and a second threshold "SH2", it is determined which one the cooking vessel 2 put on a trivet 7 is, out of an organic silicon type coated pan, a pan belonging to non-gray substances such as an alumite pan, a black-coated pan, a pan belonging to gray substances such as a silver-coated pan, and a pan belonging to a low-emissivity type such as a stainless pan. The temperature is calculated and detected by a temperature calculation method suited to the material of the cooking vessel 2. COPYRIGHT: (C)2010,JPO&INPIT |
