| 摘要 |
An environmental sensor system (1) comprises a plurality of sensor clusters (10), each sensor cluster having a plurality of sensors (11-14) and a sensor coupler (15), and a calibrator coordinator (20) in communication with the sensor clusters (10). The sensor coupler (15) of each sensor cluster obtains measurements of values of one or more environmental parameters from the sensors (11-14) of its own cluster, performs first processing on the measurements to obtain at least one first result, and forwards information extracted or generated from the measurements (possibly including the first result) to the calibrator coordinator (20). The calibrator coordinator performs second processing on the information received from all of the sensor clusters (10) to obtain at least one second result, and feeds back the second result to the sensor clusters (10) which then employ the first and second results to assess the sensors in terms of their reliability and accuracy. More particularly the first and second results indicate expected values of the environmental parameters, and each sensor coupler decides whether, and how, to incorporate the measurements of sensors into the first processing in dependence on the degree of conformity of the measurements with the expected values. The sensor coupler may calibrate or decommission or replace sensors determined to be unreliable on the basis of the expected values. |
