An electronic device for detecting an air flow includes at least one sensor having a pair of platelets, each platelet having an RTD and having one end fixed, the other end being free and overlapping the free end of the other platelet. A platelet is flexible so as to form a switch for an electrical circuit. An air flow with a speed higher than a predetermined speed makes the sensor go from a first state, corresponding to a closed switch, in which the free ends of the platelets are in contact, to a second state, corresponding to an open switch, in which said contact is broken. A detection module allows, for each sensor, a resistance of the electrical circuit to be measured, the resistance corresponding to the RTDs being connected in parallel when the switch is closed or to one of the RTDs when the switch is open.

A system and apparatus comprising a multi-sensor catheter for right heart and pulmonary artery catheterization is disclosed. The multi-sensor catheter comprises multi-lumen catheter tubing into which at least three optical pressure sensors, and their respective optical fibers, are inserted. The three optical pressure sensors are arranged within a distal end portion of the catheter, spaced apart lengthwise within the distal end portion for measuring pressure concurrently at each sensor location. The sensor locations are configured for placement of at least one sensor in each of the right atrium, the right ventricle and the pulmonary artery, for concurrent measurement of pressure at each sensor location. The sensor arrangement may further comprise an optical thermo-dilution sensor, and another lumen is provided for fluid injection for thermo-dilution measurements. The catheter may comprise an inflatable balloon tip and a guidewire lumen, and preferably has an outside diameter of 6 French or less.

A system and apparatus comprising a multi-sensor catheter for right heart and pulmonary artery catheterization is disclosed. The multi-sensor catheter comprises multi-lumen catheter tubing into which at least three optical pressure sensors, and their respective optical fibers, are inserted. The three optical pressure sensors are arranged within a distal end portion of the catheter, spaced apart lengthwise within the distal end portion for measuring pressure concurrently at each sensor location. The sensor locations are configured for placement of at least one sensor in each of the right atrium, the right ventricle and the pulmonary artery, for concurrent measurement of pressure at each sensor location. The sensor arrangement may further comprise an optical thermo-dilution sensor, and another lumen is provided for fluid injection for thermo-dilution measurements. The catheter may comprise an inflatable balloon tip and a guidewire lumen, and preferably has an outside diameter of 6 French or less.

The invention relates to a flow sensor (1), comprising: a semiconductor module (2) on which a temperature sensing means (13a, 13b) and a heat source (12) are arranged, a flow channel (6) for guiding the fluid medium in a flow direction (D), and a wall (W) delimiting the flow channel, wherein said heat source (12) and said temperature sensing means (13a, 13b) are configured such that they are in thermal contact with said wall (W). According to the invention, said wall (W) comprises a glass member (4) and a metal member (3a), wherein the glass member (4) is connected to the metal member (3a).

The invention relates to a flow sensor (1), comprising: a semiconductor module (2) on which a temperature sensing means (13a, 13b) and a heat source (12) are arranged, a flow channel (6) for guiding the fluid medium in a flow direction (D), and a wall (W) delimiting the flow channel, wherein said heat source (12) and said temperature sensing means (13a, 13b) are configured such that they are in thermal contact with said wall (W). According to the invention, said wall (W) comprises a glass member (4) and a metal member (3a), wherein the glass member (4) is connected to the metal member (3a).

Described is a device for measuring wind conditions during power kite activities. The device comprises an electronic processing unit, an anemometer, and a means of attachment to a power kite. The data from the anemometer is processed by the processing unit and stored locally or transmitted wirelessly to a secondary device (e.g. a smart phone or smart watch). The anemometer directly measures the apparent wind at the kite. In certain embodiments inclusion of an inertial measurement unit and a GPS unit provides a means of calculating the true wind by accounting for induced wind from kite and kiter motion respectively.

Described is a device for measuring wind conditions during power kite activities. The device comprises an electronic processing unit, an anemometer, and a means of attachment to a power kite. The data from the anemometer is processed by the processing unit and stored locally or transmitted wirelessly to a secondary device (e.g. a smart phone or smart watch). The anemometer directly measures the apparent wind at the kite. In certain embodiments inclusion of an inertial measurement unit and a GPS unit provides a means of calculating the true wind by accounting for induced wind from kite and kiter motion respectively.

Methods and systems for compensating for the absence or loss of a sensor measurement in a heading reference system such as an aircraft attitude and heading reference system, integrated standby unit, or vehicle inertial system, provides an estimate of the lost sensor measurement by estimating the bank angle after a detected vehicle turn. The estimate of the bank angle may also be used to estimate the vehicle's speed. Additionally, when the lost sensor measurement is a temperature measurement, the described methods and systems offer an improvement over estimating air temperature using a standard (e.g., ISA) model. The methods and systems also allow for the refinement of computed estimates using filtering techniques, such as low-pass or Kalman filtering. The methods may be iteratively repeated for each detected turn in order to maintain an accurate estimate of the lost sensor measurement or other estimates, such as vehicle speed.

Methods and systems for compensating for the absence or loss of a sensor measurement in a heading reference system such as an aircraft attitude and heading reference system, integrated standby unit, or vehicle inertial system, provides an estimate of the lost sensor measurement by estimating the bank angle after a detected vehicle turn. The estimate of the bank angle may also be used to estimate the vehicle's speed. Additionally, when the lost sensor measurement is a temperature measurement, the described methods and systems offer an improvement over estimating air temperature using a standard (e.g., ISA) model. The methods and systems also allow for the refinement of computed estimates using filtering techniques, such as low-pass or Kalman filtering. The methods may be iteratively repeated for each detected turn in order to maintain an accurate estimate of the lost sensor measurement or other estimates, such as vehicle speed.

Provided is a flow meter that determines a liquid flow rate based on temperature. The flow meter has a cylindrical measurement tube having an internal flow passage, and a temperature detecting substrate including a heating resistance element a temperature detecting resistance element formed on a detection surface thereof. The measurement tube has a flat surface facing the detection surface of the temperature detecting substrate, and a pair of recesses arranged so as to sandwich the internal flow passage at a position where the heating resistance element is arranged. The flat surface and the detection surface are bonded together to form two bonding area. A width of the first bonding area is narrower than a width of the second bonding area so that heat, transmitted through the measurement tube from the heating resistance element is increased.