Method and telemetric device for resampling time series data

A telemetric device for measuring time series data, comprising:

• a sensor configured to measure a first time series comprising a sequence of data points having data point values;
• a processing unit configured to determine a variation of the data point values within a selected sequence of data points, wherein the variation is determined by linearly interpolating the selected sequence of data points and by determining a maximum absolute difference between the data point value and the corresponding interpolated data point value within the selected sequence;
• if a determined variation for the first time series is greater than a predetermined error value, said processing unit being further configured to select subsequences by repeatedly dividing the first time series into adjacent subsequences until the first time series comprises a set of subsequences wherein the determined variation for each of the subsequences is smaller than the predetermined error value;
• and
• said processing unit being further configured to create a resampled time series by adding the data points of the first time series that correspond to a first or last data point of a subsequence to the resampled time series, wherein every data point is added only once to the resampled time series and to transmit or store said resampled time series;
• characterized in that a sequence of data points is divided into smaller subsequences bY substantially evenly dividing the sequence in half, wherein the last data point of the first hall corresponds to the first data point of the second half.