| 摘要 |
Pressure sensor comprising piezoresistive strain gauges R1-R4, mounted on a member 3 which is deformable under the action of pressure, forming a measuring bridge (4) and, for compensating for the influence of the temperature on the strain gauges, resistances RT1-RT2 sensitive to temperature and connected in a bridge (5) are mounted on the deformable member, each in a symmetrical manner with respect to a zero strain line. Means are provided for correcting the information supplied by the measuring bridge (4) according to a polynomial model comprising a memory (12) divided into areas associated respectively with the different terms of the correction polynomial model and each containing predetermined correction data, means (8-11) for addressing one of the data of each area of the memory, controlled by the measuring bridge (4) and the means sensitive to temperature (5) and means (11, 13) for reading the areas of the memory and adding the data of these areas and obtaining the corrected pressure information Gc. <IMAGE> |
