Abstract: (EN) Respiration of a patient can be monitored by means of a device (ASD) that has the following characteristics. An inlet (IL) receives a pressurized airflow of breathable air from an airflow source. An outlet (OL) applies the pressurized airflow to a mask worn by the patient. An airflow path (AFP) is arranged between the inlet (IL) and the outlet (OL). The airflow path (AFP) has an axis (AX) and exhibits a decrease (??D) in diameter followed by an increase (+?D) in diameter in a direction from the inlet (IL) to the outlet (OL). The increase (+?D) in diameter comprises an initial portion (WI) in which the diameter increases according to a slope (?) of less than 10° with respect to the axis (AX). A pressure measurement arrangement (PS1, PS2) provides an indication (SO) of a pressure difference in the pressurized airflow between two sections (IN, T) of the airflow path that have different diameters.

Abstract: (EN) Respiration of a patient can be monitored by means of a device (ASD) that has the following characteristics. An inlet (IL) receives a pressurized airflow of breathable air from an airflow source. An outlet (OL) applies the pressurized airflow to a mask worn by the patient. An airflow path (AFP) is arranged between the inlet (IL) and the outlet (OL). The airflow path (AFP) has an axis (AX) and exhibits a decrease (??D) in diameter followed by an increase (+?D) in diameter in a direction from the inlet (IL) to the outlet (OL). The increase (+?D) in diameter comprises an initial portion (WI) in which the diameter increases according to a slope (?) of less than 10° with respect to the axis (AX). A pressure measurement arrangement (PS1, PS2) provides an indication (SO) of a pressure difference in the pressurized airflow between two sections (IN, T) of the airflow path that have different diameters.

Abstract: The invention concerns a method and a device for radiofrequency (RF) communication. According to the method, a communication can be set up between a reader (12) and an RF device (10) at least over a medium distance and over a short distance. The short distance communication is set up using an RF-ID transponder (20) and an antenna (16). In order to set up the medium distance communication, the reader (12) sends a command signal to the RF-ID transponder (20) in order to power up at least one microcontroller (24) and a transceiver (34). The microcontroller (24) sends to the reader (12), via the transceiver (34), a reply message comprising at least the identification of the device (10).