PHYSICAL QUANTITY MEASURING METHOD,TEMPERATURE MEASURING METHOD BY INFRARED THERMOMETER,PHYSICAL QUANTITY MEASURING DEVICE,AND INFRARED THERMOMETER

摘要

A measuring device in which a sensor output of an analog voltage signal from a sensor (7) for a measured object physical quantity outputted from an measured object (6) is inputted through a multiplexer (8) and an operational amplifier (4) to an integration circuit (2), the time till the quantity of charge released from the integration circuit (2) reaches a threshold value presented by a reference voltage in a comparator circuit (9) is measured, this time is inputted from a CPU (1) to an EE−ROM (3) holding an intrinsic function, and an eigenfunction suited for the characteristics of an electronic part used in a control circuit is defined. A highly precise voltage signal processing system having an A/D conversion function can be constructed.