Multi-sense environmental monitoring device and method

摘要

An environmental monitoring device for detecting and warning users of unhealthy levels of a given substance is disclosed having more than one sensor for each substance to be detected. Each sensor for each substance detected may be positioned in more than one plane or surface on the device. The device may be capable of auto or self calibration. Methods for reading substance levels and auto calibrating are also disclosed.

主权项

1. A monitoring device for monitoring substances, the monitoring device comprising:
a plurality of sensors, each of at least two sensors of the plurality of sensors being configured to detect a same substance separately from all other sensors of the monitoring device and to generate an output signal in response to a detection of the same substance; a processing unit operably coupled to the at least two sensors, the processing unit being configured to:
receive each of the output signals from the at least two sensors,determine a detection signal for the 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 performing self-calibration by adjusting a gain of a sensor according to the relationship:
sensorGainnew=sensorGainold+0.1*[max(sensorReading1, sensorReading2)]/[min (sensorReading1, sensorReading2)]; and a display operably coupled to the processing unit, the display being configured to show a detection condition for the same substance in accordance with the detection signal.