Patent ID: 8368389
Filing Date: 2013-02-05
Classification: F16C,G01D,G01P

Abstract:
1. A sensor unit comprising a sensor for correcting detection signals using initial calibration parameters with a working voltage supplied thereto, and a housing fixing in position a circuit board on which the sensor is mounted, said sensor being configured to write the initial calibration parameters with a calibration voltage that is higher than the working voltage supplied to an input end of the sensor, wherein the sensor unit further comprises a voltage stabilizing circuit for stabilizing a voltage value of a supply power source to said working voltage, and wiring for supplying said calibration voltage to the sensor, said voltage stabilizing circuit and said wiring being provided parallel to each other between the input end of the sensor and a power source connecting end for the sensor on the circuit board, and a switching portion which can disconnect the wiring, wherein an access hole is formed in the housing through which the switching portion is accessible to disconnect the wiring.