| 摘要 |
PURPOSE: A pressure measuring device is provided to minimize an off-set difference of a resistance value of stress patterns and to make sensitivity according to a measuring position of the stress patterns uniformly. CONSTITUTION: A pressure measuring device comprises a diaphragm(52), a positive stress pattern(62), and a negative stress pattern(72). The positive stress pattern is arranged in the diaphragm and measures a stress of the positive deformation. The negative stress pattern is formed in the positive stress pattern around an origin to be faced, thereby measuring a stress of the negative deformation. The each stress pattern comprises a plurality of first electrode units, a plurality of second electrode units, first lead units, and second lead units. The first lead units are arranged in radial direction toward the origin. The second electrode unit is installed in each end part of the first electrode unit by turns, thereby electrically connecting the first electrode units. The first and second lead units connect the end parts of the first electrode units or second electrode units and a connection terminal formed in the diaphragm.
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