| 摘要 |
In order to generate a warning when the ambient temperature of an incubator 100 strays above or below operational limits, a power input parameter P of the incubators climate controller 130 is determined over a sample time and if the power input parameter is greater than a first threshold or less than a second threshold, an alarm is sounded. This avoids inaccuracies in temperature-measuring methods due to the proximity of other heat sources, such as the eggs or chicks themselves. The climate controller, typically a heater, can be controlled by pulse modulation, in which case the power input parameter can be measured by ascertaining the proportion of the sample time during which the climate controller is on. |
