Abstract: A system for respiratory monitoring of a subject comprises: a bioimpedance measurement sensor, which is configured for arrangement in relation to the subject for acquiring a bioimpedance signal; a processing unit, which is configured to receive the acquired bioimpedance signal and receive a reference signal, the reference signal representing a respiratory effort of the subject or a respiratory airflow at a time of bioimpedance signal acquirement, the processing unit being further configured to divide the bioimpedance signal into an effort component representing a respiratory effort of the subject and a flow component representing a respiratory airflow of the subject based on the received bioimpedance signal and the received reference signal.

Abstract: An electronic system for bioimpedance signal acquisition, comprises: a current signal injection module configured for generating a current signal to be applied to a subject; a bioimpedance signal measurement module configured for measuring a bioimpedance signal based on a voltage generated by the current signal; a data quality detection module configured for detecting an AC or a DC level of the measured bioimpedance signal and detecting whether the AC or DC level is within or outside an AC reference value range and a DC reference value range, respectively; and a signal adaptation module configured for modifying at least one parameter of the current signal injection module or the bioimpedance signal measurement module based on said detection of the AC or DC level in relation to the AC reference value range and the DC reference value range, respectively.

Abstract: A wearable sensing device (100) for sensing one or more physiological signals of a subject, comprising: a sensor unit (200), including a housing, a connection receptacle (210) and electronic circuitry configured for acquiring one or more physiological signals received via the connection receptacle; a patch unit (300), including a connection plug (310) connected via conductive tracks (341) to a plurality of electrodes (342) configured for sensing the one or more physiological signals. The connection plug (310) is configured for being connectable with the connection receptacle (210) such that the one or more physiological signals sensed by the electrodes (342) are transmitted to the electronic circuitry of the sensor unit (200).

Abstract: A battery operated device and method of removing a battery therefrom are described. The battery operated device includes a battery compartment, a battery in the battery compartment, and an electric component powered by the battery. The battery compartment is mounted on a deformable base and includes a top surface which is adapted to be ruptured by deforming the deformable base, thereby enabling removal of the battery from the battery compartment. The method of removing a battery from a battery compartment of a battery operated device includes rupturing a top surface of the battery compartment by deforming a deformable base of the battery compartment, and removing the battery from the battery compartment.

Abstract: A wearable sensing device (100) for sensing one or more physiological signals of a subject, comprising: a sensor unit (200), including a housing, a connection receptacle (210) and electronic circuitry configured for acquiring one or more physiological signals received via the connection receptacle; a patch unit (300), including a connection plug (310) connected via conductive tracks (341) to a plurality of electrodes (342) configured for sensing the one or more physiological signals. The connection plug (310) is configured for being connectable with the connection receptacle (210) such that the one or more physiological signals sensed by the electrodes (342) are transmitted to the electronic circuitry of the sensor unit (200).

Abstract: A system for respiratory monitoring of a subject comprises: a bioimpedance measurement sensor, which is configured for arrangement in relation to the subject for acquiring a bioimpedance signal; a processing unit, which is configured to receive the acquired bioimpedance signal and receive a reference signal, the reference signal representing a respiratory effort of the subject or a respiratory airflow at a time of bioimpedance signal acquirement, the processing unit being further configured to divide the bioimpedance signal into an effort component representing a respiratory effort of the subject and a flow component representing a respiratory airflow of the subject based on the received bioimpedance signal and the received reference signal.

Abstract: An electronic system for bioimpedance signal acquisition, comprises: a current signal injection module configured for generating a current signal to be applied to a subject; a bioimpedance signal measurement module configured for measuring a bioimpedance signal based on a voltage generated by the current signal; a data quality detection module configured for detecting an AC or a DC level of the measured bioimpedance signal and detecting whether the AC or DC level is within or outside an AC reference value range and a DC reference value range, respectively; and a signal adaptation module configured for modifying at least one parameter of the current signal injection module or the bioimpedance signal measurement module based on said detection of the AC or DC level in relation to the AC reference value range and the DC reference value range, respectively.

Abstract: A battery operated device and method of removing a battery therefrom are described. The battery operated device includes a battery compartment, a battery in the battery compartment, and an electric component powered by the battery. The battery compartment is mounted on a deformable base and includes a top surface which is adapted to be ruptured by deforming the deformable base, thereby enabling removal of the battery from the battery compartment. The method of removing a battery from a battery compartment of a battery operated device includes rupturing a top surface of the battery compartment by deforming a deformable base of the battery compartment, and removing the battery from the battery compartment.

Abstract: A communication device is disclosed. The device may be in particular a radio transmitter and a receiver that can operate with low power consumption and with improved interference rejection, therefore particularly suitable for use in low-power communication systems, such as wireless sensor networks and wireless body area networks. In one aspect, multiple frequency tones (carriers) are used to carry information from the transmitter, such that a RF signal having multiple radio frequency components is produced and transmitted. In the receiver, an envelope detector is still the RF down-converter. After down-converting intermodulation components are extracted containing amplitude, phase and frequency information of the multiple radio frequency components. This allows the desired signal (the baseband information) to be distinguished from the carriers and unwanted interference.

Abstract: A communication device is disclosed. The device may be in particular a radio transmitter and a receiver that can operate with low power consumption and with improved interference rejection, therefore particularly suitable for use in low-power communication systems, such as wireless sensor networks and wireless body area networks. In one aspect, multiple frequency tones (carriers) are used to carry information from the transmitter, such that a RF signal having multiple radio frequency components is produced and transmitted. In the receiver, an envelope detector is still the RF down-converter. After down-converting intermodulation components are extracted containing amplitude, phase and frequency information of the multiple radio frequency components. This allows the desired signal (the baseband information) to be distinguished from the carriers and unwanted interference.

Abstract: A communication device is disclosed. The device may be in particular a radio transmitter and a receiver that can operate with low power consumption and with improved interference rejection, therefore particularly suitable for use in low-power communication systems, such as wireless sensor networks and wireless body area networks. In one aspect, multiple frequency tones (carriers) are used to carry information from the transmitter, such that a RF signal having multiple radio frequency components is produced and transmitted. In the receiver, an envelope detector is still the RF down-converter. After down-converting intermodulation components are extracted containing amplitude, phase and frequency information of the multiple radio frequency components. This allows the desired signal (the baseband information) to be distinguished from the carriers and unwanted interference.

Abstract: A device and method for selecting a frequency channel of given bandwidth in a cognitive radio application is disclosed. In one aspect, the method includes evaluating, at one of a plurality of frequency bins, a function indicative of the frequency occupancy. If the evaluation result indicates free spectrum at the considered frequency bin, the previous step is repeated for a frequency bin adjacent to the considered frequency bin until the free frequency bins constitute a frequency channel of the given bandwidth. Otherwise, the method moves to select a next frequency bin to be considered. It is selected by calculating a measure of the left and right derivative of the function at the considered frequency bin, taking the measure of the left or right derivative as gradient approximation, and determining the next frequency bin by shifting the considered frequency bin over a frequency shift inversely proportional to the gradient approximation.