Abstract:
A detection device and method includes a transducer array (20) located at a designated area and configured to perform an ultrasonic sweep of the area in response to a trigger event. The transducer array is capable of determining a presence of a live being (16) in the area in accordance with the ultrasonic sweep. A power supply (21) is coupled to the transducer array to provide power to the transducer array and to enable the ultrasonic sweep in a power failure. A transmitter (23) is configured to transmit a result of the ultrasonic sweep to provide a determination of the presence of a live being and the live being's location in the area to personnel responding to an event.
Abstract:
The invention relates to a wireless sensor device configured for sensing motion of an object in an area. The device comprises a motion sensor configured for generating a sensing signal when sensing motion in the area and a signal processor configured for processing the sensing signal. A power supply is provided for providing power to the motion sensor. Furthermore, the wireless sensor device comprises a controller configured for distinguishing, from the sensing signal, large object movements and small object movements of the object in the area. The wireless sensor device is configured to perform one or more power consumption reduction operations upon detection of large object movement. The power consumption reduction operations include temporarily disconnecting the motion sensor from the power supply and decreasing a duty cycle of the signal processor.
Abstract:
A passive detector (10) includes a receiver (11) configured to collect passive radiation (12) in an environment, where detailed information about a portion of the passive radiation is estimated as a baseline of the passive energy. The passive energy is generated by a passive source unrelated to the detector. A monitor (24) is configured to measure a fluctuation in the baseline. A decision module (34) is coupled to the monitor to determine whether the fluctuation represents a presence or motion in the environment. Detection methods are also disclosed.
Abstract:
A node detection system includes an array of nodes (510), wherein each node of the array of nodes (510) has at least at least two, three or four directional antennas (530) configured to have antenna beams in as many directions. The range of each antenna is limited to reach a neighboring operational node of the array of nodes (510) for transmission of a message to the neighboring operational node. A controller (550) is configured to receive messages from the array of nodes (510) and determine the location of each node based on the messages.
Abstract:
In a system and method of capturing movement of an object, a tracking device is used having an optical marker and a motion sensor providing motion data representative of the position and orientation of the tracking device. The tracking device is connected to the object, and motion of the optical marker is registered by a camera to thereby provide video data representative of the position of the tracking device. The motion data and the video data are processed in combination to determine the position and orientation of the tracking device in space over time.
Abstract:
This invention relates to medical, health care and non-medical devices comprising a rubbery or elastomeric polymer material taking up more than 5% by weight of water and at most 500% by weight of water after immersion in demineralized water at room temperature for a sufficient time to reach saturation. The material may be in the form of a foam, or in the form of a coating adapted for adhesion to a substrate, or in the form of a sheet, or in the form of a fiber, and may comprise: - repeating units from one or more hydrophobic organic monomers, and - repeating units from one or more monomers (a) being modified with one or more hydrophilic side groups.
Abstract:
Skin-contact products with a transpiration function such as medical devices or medicinal products, of which face masks, aspirators, ventilators, breast pumps or wound dressings are examples are described especially a skin-contact product with a transpiration function with an improved microclimate at a patient interface material -skin contact area. In an embodiment a material system (10, 20, 30) is described that comprises a hydrophobic silicone base material (11, 21, 31) and a hydrophilic silicone material (12, 22, 32) that is combined with the hydrophobic base material (11, 21, 31). At least a part of the hydrophilic material (12, 22, 32) is in contact with a moist surface (50). The hydrophobic base material (11, 21, 31) provides mechanical and dynamical stability of the material system (10, 20, 30). The hydrophilic material (12, 22, 32) allows for uptake or for diffusion of moisture away from moist surface (50). The material system (10, 20, 30) is utilized to fabricate a patient interface material (41) and forehead pad (42) of a user or patient interface, such as face mask (40), for example, a patient interface mask for positive air pressure therapy. Furthermore, a novel composition for the preparation of hydrophilic silicone materials, suitable for use in the material system (10, 20, 30), is disclosed.
Abstract:
The present invention relates to a transducer (11) comprising - a membrane (31) configured to change shape in response to a force, the membrane (31) having a first major surface (16) and a second major surface (17), - a piezoelectric layer (18) formed over the first major surface (16) of the membrane (31), the piezoelectric layer (18) having an active portion, - first and second electrodes (19) in contact with the piezoelectric layer (18), wherein an electric field between the first and second electrodes (19) determines the mechanical movement of the piezoelectric layer (18), -support structures (40) at the second major surface (17) of the membrane (15) on adjacent sides of the active portion of the piezoelectric layer (18), at least part of the support structures (40) forming walls perpendicular, or at least not parallel, to the second major surface (17) of the membrane (31), so as to form a trench (41) of any shape underlying the active portion, so that an ultrasound transducer is obtained with a high output pressure at the support side than at the opposite side. The invention also relates to a method of forming such a transducer, and an array comprising at least one transducer of the like.
Abstract:
The present invention relates to a method of controlling a dimmable luminaire co-arranged with a light sensor at a first level of a room and illuminating a second level of the room, comprising: determining an output path parameter representing a relation between the amount of light emitted from the luminaire and a luminaire illumination value at the second level, which results from the emitted amount of light; and repeatedly: determining an external illumination value at the second level, which external illumination value represents illumination by other sources than the luminaire, by means of values of the presently emitted amount of light, the output path parameter, and light information originating from the light sensor; and controlling the dimming level of the luminaire on basis of the external illumination value in order to meet a predetermined illumination condition for the total illumination at the second level.
Abstract:
The invention relates to a system for transmitting power inductively from a transmitter (11) to a receiver (10), the receiver (10) comprising a signal generator for generating a signal, triggered by an event reflecting that the receiver intends to receive power from the transmitter, wherein said signal intends to activate said transmitter from standby mode to activated mode; and comprising a signal transmitting coil (103) for transmitting said signal to said transmitter; said transmitter (11) comprising a signal receiving coil (112); a detector (114) for detecting said signal received by the receiving coil; and a unit (115) for activating the transmitter from standby mode to activated mode upon the detection of said signal.