| 主权项 |
1. A monitoring device for monitoring substances, said monitoring device comprising:
a group of at least two sensors, each of the at least two sensors being configured to detect a same substance separately from all other sensors of said device and to generate an output signal in response to a detection of said same substance; a processing unit operably coupled to the at least two sensors, said processing unit being configured to:
receive each of the output signals from the at least two sensors,determine a detection signal for said same substance based on the output signals, andgenerate a calibration action responsive to at least two of the output signals deviating by a threshold amount, the calibration action comprising at least one of performing self-calibration and generating a calibration request; a display operably coupled to said processing unit, said display being configured to show a detection condition for said same substance in accordance with said detection signal; an alarm operably coupled to said processing unit, said alarm being configured to be activated responsive to said detection signal deviating from a level that corresponds to a predetermined concentration of said same substance; and an orientation sensor operably coupled to said processing unit and configured to provide an orientation output signal indicating the physical orientation of the monitoring device, wherein said processing unit is configured to determine a sensor orientation of each of the at least two sensors based on the orientation output signal and to adjust a concentration reading of at least one of the at least two sensors based on the sensor orientation to determine the detection signal. |
