Patent ID: 7359818

Claim:
A control system comprising: a plurality of sensor apparatuses, each of which measures a corresponding physical quantity of a measurement subject and outputs a measurement value of the measured physical quantity; and a control apparatus that outputs an offset correction command to each of the plurality of sensor apparatuses to execute offset adjustment on an offset value of the measurement value in each required one of the plurality of sensor apparatuses, which requires the offset adjustment, wherein each sensor apparatus includes: a sensing device that generates a measurement signal, which changes in consistent with a change in the physical quantity of the measurement subject and indicates the measurement value of the measured physical quantity; a communication device that performs two-way communication relative to the control apparatus and each remaining one of the plurality of sensor apparatuses, wherein the communication device receives the offset correction command from the control apparatus, and the communication device outputs measurement information, which includes the measurement value indicated by the measurement signal generated from the sensing device of its own sensor apparatus, to each remaining one of the plurality of sensor apparatuses and receives the measurement information from each remaining one of the plurality of sensor apparatuses; and an adjusting device that adjusts the measurement value, which is indicated by the measurement signal received from the sensing device of its own sensor apparatus, wherein: the adjusting device determines a physical quantity application state of the sensing device of the own sensor apparatus based on the measurement value, which is indicated by the measurement signal received from the sensing device of the own sensor apparatus, in response to the offset correction command received from the control apparatus through the communication device of the own sensor apparatus; the adjusting device determines whether the physical quantity is applied to the sensing device of the own sensor apparatus based on the physical quantity application state of the sensing device of the own sensor apparatus, which is obtained based on the measurement value of the sensing device of the own sensor apparatus, and a physical quantity application state of the sensing device of each remaining one of the plurality of sensor apparatuses, which is obtained based on the measurement value included in the measurement information received from the remaining one of the plurality of sensor apparatuses through the communication device of the own sensor apparatus; and the adjusting device executes the offset adjustment of the offset value of the measurement value, which is indicated by the measurement signal received from the sensing device of the own sensor apparatus, when the adjusting device determines that the physical quantity is not applied to any of the sensing devices of the plurality of sensor apparatuses.