| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring method which can precisely obtain strain and physical quantity of an object to be measured together with a temperature. SOLUTION: One sheet of strain gauge 1 is stuck on an object to be measured which is not shown in figure. The strain gauge 1 is connected with a measuring unit 3 through three lead wires 2a-2c, and a bridge circuit 7 is formed by a one-gauge-three-line method. By constituting the two lead wires 2a, 2c out of the three lead wires 2a-2c of different materials, a junction of a thermocouple is formed in the vicinity of the strain gauge 1. Strain and temperature of the object are measured from an output voltage of the bridge circuit 7 when a power supply voltage is applied and an output voltage of the bridge circuit 7 when the power supply voltage is not applied (which corresponds to the output voltage of the thermocouple).
|
