A respiratory mechanics measuring module includes a flow sensor, a differential-pressure sensor and a sampled-signal processing circuit which are connected in series. The module further includes a flow sensor reverse connection judging module and an alarm. The flow sensor reverse connection judging module...http://www.google.de/patents/US7861711?utm_source=gb-gplus-sharePatent US7861711 - Method for judging the reverse connection of a flow sensor and a respiratory mechanics measuring module used therein
