| 摘要 |
<p>An apparatus for monitoring the response of a gas sensor comprises a gas sensor in communication with a processor and a memory containing a first model response of the sensor to a source of gas, wherein in use, the sensor is exposed to the source of gas to be sensed thereby producing a first measured response S104 that the processor is configured to combine with the first model response contained in the memory to produce a first predicted data point S108. The processor is configured to determine a difference between the first predicted data point and an equivalent data point of the first model response S110 and to transmit a signal if the difference between the first predicted data point and the equivalent data point of the first model response exceeds a predetermined threshold S112. A further apparatus compares a similarity between the measured response and an equivalent data point of the model response and transmits a signal if a difference threshold is exceeded.</p> |
