Patent ID: 8633820

Claim:
A system for monitoring a fermentation process in connection with ensilage of fodder in a storage silo or bale, the system comprising: a sensor device arranged in said fodder in one of i) a storage silo, and ii) a bale during the ensilage thereof, the sensor device comprising at least three different sensors ( 3 a - c ) for repeatedly making sensor measurements, at a common location, including of a content of at least two different chemical substances separately during the ensilage in the fodder within the one of i) the storage silo, and ii) the bale, the content of the at least two different substances, each substance being affected by the fermentation process; and a monitoring device operatively connected to said sensor device during the ensilage, the monitor device comprising i) a receiving unit arranged to receive the repeatedly measured values, ii) a processing unit arranged to compare the repeatedly measured values with reference values to determine if a difference of the measured values and the reference values are within a maximum allowed deviation, and iii) a notifying unit arranged to notify a farmer based on an outcome of the comparison of the repeatedly measured values and the reference values exceeds the maximum allowed deviation, wherein the reference values are changed over time as a function of one of i) a duration of the ensilage of the fodder and ii) earlier measured values of the at least two chemical substances taken by the three different sensors of the sensor device.