Glättung der Blut-Glukose-Daten

If BG data is jumpy/noisy, AAPS may dose insulin incorrectly resulting in highs or lows. If you observe errors in your CGM data it is important to disable the loop until the problem is resolved. Depending on your CGM, such issues may be due to the CGM configuration in AAPS (as explained further below); or a CGM sensor site issue (which may require replacing the CGM sensor).

Some CGM systems have internal algorithms to detect the noise level in the readings, and AAPS can use this information to avoid giving SMBs if the BG data is too unreliable. Für die CGMs, die diese Informationen nicht übermitteln, werden die Funktionen ‘Aktiviere SMB immer’ und ‘Aktiviere SMB nach Mahlzeiten’ aus Sicherheitsgründen deaktiviert.

Additionally, as of AAPS version 3.2, AAPS offers the option to smooth the data within AAPS rather than within the CGM app. There are three options available in the Config Builder.

Exponential smoothing

This is the recommended option to start with, as it is most aggressive in resolving noise and rewrites the most recent value.

Average smoothing

This option works similar to back smoothing that was previously implemented on certain CGM platforms. It is more reactive to recent changes in BG value and therefore more prone to responding incorrectly to noisy CGM data.

No Smoothing

Use this option only if your CGM data is being properly smoothed by your collector app before being transmitted to AAPS.

Suggestions to use smoothing

	Exponential	Average	None
G5 and G6		If noisy	Recommended
G7	Recommended
Libre 1 or Juggluco	Recommended
Libre 2 and 3 from xDrip+			Recommended