To provide a measuring device in which high-precision measuring can be performed even without using expensive components and also costs can be reduced remarkably.
In a measuring device 1, a load cell bridge circuit 42 to which an AC voltage is supplied and a reference bridge circuit 44 are connected in parallel, output signals of the load cell circuit 42 and the reference circuit 44 are switched alternately on the basis of a cycle of the AC voltage by switch means 57, and the output signal of the load cell circuit 42 is corrected on the basis of the output signal of the reference circuit 44 by correction means 60. The output signals of the load cell circuit 42 and the reference circuit 44 are obtained alternately and compared constantly and a measured value is determined after correcting a path error that may occur in the output signals of the reference circuit 44 and the load cell circuit 42, thereby obtaining a high-precision measured value. Further, the measuring device 1 which is made inexpensive can be provided by eliminating the need to use expensive components for output sides of the circuits 42 and 44.
HOKARI HARUYUKI
KOIWAI ATSUSHI
| JPH06241878A | 1994-09-02 | |||
| JP2003042879A | 2003-02-13 | |||
| JP2002214024A | 2002-07-31 |
Yu Ota