Abstract: A gas sensor system and a method of operating the gas sensor system can include a group of sensors and a microcontroller that can receive sensor measurements from the group of sensors. Feedback from the group of sensors can generate a sensor offset and a pulse width modulation (PWM) demodulator can be varied to reduce the sensor offset to null and provide sensor-to-sensor variations, which are independent of error in the sensor measurements.

Abstract: In some examples, a system includes a magnet configured to move in response to a movement of a wear pin indicator of a brake assembly of a vehicle; and a sensor configured to generate position data corresponding to the magnet, the position data indicating a relative linear position of the wear pin indicator, wherein the position data corresponds to an estimated remaining useful lifespan of the brake assembly. Additionally, the system includes an energy harvesting device configured to generate an electrical signal based on an operation of one or both of the brake assembly and the vehicle, wherein the energy harvesting device is configured to deliver at least a portion of the electrical signal to the sensor.

Abstract: A system including a magnet configured to move in response to a movement of a wear pin indicator of a brake assembly of a vehicle. A sensor is configured to generate position data corresponding to the magnet. The position data is indicative of a position and/or movement of the wear pin indicator. The system includes a thermoelectric generator configured to generate an electrical signal based on an operation of the brake assembly. The thermoelectric generator is configured to deliver at least a portion of the electrical signal to the sensor. The system includes a mounting bracket configured to mechanically couple a sensor housing to an actuator housing of the brake assembly. The mounting bracket is configured to provide heat to the thermoelectric generator when the mounting bracket mechanically couples the sensor housing and the actuator housing.

Abstract: In some examples, a system includes a magnet configured to move in response to a movement of a wear pin indicator of a brake assembly of a vehicle; and a sensor configured to generate position data corresponding to the magnet, the position data indicating a relative linear position of the wear pin indicator, wherein the position data corresponds to an estimated remaining useful lifespan of the brake assembly. Additionally, the system includes an energy harvesting device configured to generate an electrical signal based on an operation of one or both of the brake assembly and the vehicle, wherein the energy harvesting device is configured to deliver at least a portion of the electrical signal to the sensor.

Abstract: A prognostic and health monitoring system for a device with a rotating component is provided. The system includes a plurality of sensors. Each sensor is configured to sense a parameter of the device. A controller is in communication output sensor signals. The controller, based on instructions stored in a memory, is configured to filter the output sensor signals based on operational speed data of the rotating component to obtain normalized sensor data, construct multivariate gaussian distribution parameters from the normalized sensor data using a central limit theorem, compare a model generated with a learning algorithm applied to previous constructed multivariate gaussian distribution parameters with the constructed multivariate gaussian distribution parameters, and determine a state of the device based at least in part on the comparison of model with the constructed multivariate gaussian distribution parameters. A communication system communicates the determined state of the device to a remote location.

Abstract: A system includes a first levitation magnet. The system also includes a suspension magnet configured underneath the first levitation magnet. The suspension magnet oscillates continuously. Magnetic flux cuts across electrical coil windings. Energy is generated as a result of the magnetic flux that cuts across the electrical coil windings. A second levitation magnet is positioned underneath the suspension magnet and first levitation magnet. The suspension magnet is configured to levitate between the first levitation magnet and the second levitation magnet.

Abstract: A method for determining a health indication of a mechanical component includes: receiving, by a processor of a multi-sensor node device having a plurality of sensors, a configuration defining activation of the plurality of sensors based on a type of mechanical component to which the multi-sensor node device is coupled and based on a level of energy harvesting available at the multi-sensor node device; determining to activate a first sensor based on the received configuration; collecting data from the first sensor relating to a first parameter of the mechanical component; determining to activate a second sensor based on determining that the data collected from the first sensor indicates a threshold is exceeded; collecting data from the second sensor relating to a second parameter of the mechanical component; determining an initial health indication of the mechanical component; and transmitting the determined initial health indication to a remote computing system.

Abstract: A system includes a first levitation magnet. The system also includes a suspension magnet configured underneath the first levitation magnet. The suspension magnet oscillates continuously. Magnetic flux cuts across electrical coil windings. Energy is generated as a result of the magnetic flux that cuts across the electrical coil windings. A second levitation magnet is positioned underneath the suspension magnet and first levitation magnet. The suspension magnet is configured to levitate between the first levitation magnet and the second levitation magnet.

Abstract: A method for additive manufacturing process parameter monitoring of additively manufactured articles and associated raw materials, the method comprising the steps of: at an additive manufacturing raw material supplier located at a first location, packaging a raw additive manufacturing material, which may be a metal powder, and placing a sensor device inside the packaging, wherein the sensor device, which is powered by ambient energy, monitors one or more material parameters, as the packaging moves through a supply chain, and wherein sensed parameters from the sensor device are recorded periodically until the raw material is loaded to an additive manufacturing tool at a second location, different from the first location; prior to utilizing the sensor device, registering an identity for the sensor with blockchain rules to establish a trust on data originating from the sensor device; at an additive manufacturing article supplier located at the second location, using an additive manufacturing tool, manufacturing

Abstract: In some examples, a device configured to determine an estimated remaining use of a brake assembly includes a magnet configured to move in response to movement of a wear pin indicator of the brake assembly, a sensor configured to generate an output signal based on a position of the magnet relative to the sensor, and processing circuitry configured to determine the estimated remaining use of the brake assembly based on the output signal generated by the sensor.

Abstract: In some examples, a device configured to determine an estimated remaining use of a brake assembly includes a magnet configured to move in response to movement of a wear pin indicator of the brake assembly, a sensor configured to generate an output signal based on a position of the magnet relative to the sensor, and processing circuitry configured to determine the estimated remaining use of the brake assembly based on the output signal generated by the sensor.

Abstract: In some examples, device is configured to determine an estimated remaining use of a brake assembly. The device includes a transceiver configured to transmit a signal towards a wear pin in the brake assembly at a first time. The transceiver is also configured to receive a reflection of the signal from the wear pin at a second time. The device further includes processing circuitry configured to determine a difference of the first time and the second time. The processing circuitry is also configured to determine the estimated remaining use of the brake assembly based on the difference of the first time and the second time.

Abstract: In some examples, device is configured to determine an estimated remaining use of a brake assembly. The device includes a transceiver configured to transmit a signal towards a wear pin in the brake assembly at a first time. The transceiver is also configured to receive a reflection of the signal from the wear pin at a second time. The device further includes processing circuitry configured to determine a difference of the first time and the second time. The processing circuitry is also configured to determine the estimated remaining use of the brake assembly based on the difference of the first time and the second time.

Abstract: Apparatus for determining concentration of a targeted gas in environmental air, the apparatus includes a non-dispersive infrared (NDIR) sensor, a pressure sensor coupled in fluid communication with an interior of the NDIR sensor; and a processor. The processor is configured to receive pressure data from the pressure sensor based on gas pressure within an interior of the NDIR sensor, receive a target-gas concentration signal from the NDIR sensor, and produce a pressure-compensated concentration signal based on the target-gas concentration signal, a predetermined reference pressure and the pressure data from the pressure sensor.

Abstract: Apparatus for determining concentration of a targeted gas in environmental air, the apparatus includes a non-dispersive infrared (NDIR) sensor, a pressure sensor coupled in fluid communication with an interior of the NDIR sensor; and a processor. The processor is configured to receive pressure data from the pressure sensor based on gas pressure within an interior of the NDIR sensor, receive a target-gas concentration signal from the NDIR sensor, and produce a pressure-compensated concentration signal based on the target-gas concentration signal, a predetermined reference pressure and the pressure data from the pressure sensor.

Abstract: Methods and systems for updating an airfield lighting system with an LED light source are described herein. One method includes removing a light source from an existing light fixture of an airfield lighting system, wherein the removed light source is not a light emitting diode (LED) light source, and replacing the removed light source with an LED light source in the existing light fixture without modifying or replacing any other element of the existing light fixture.

Abstract: Methods and systems for updating an airfield lighting system with an LED light source are described herein. One method includes removing a light source from an existing light fixture of an airfield lighting system, wherein the removed light source is not a light emitting diode (LED) light source, and replacing the removed light source with an LED light source in the existing light fixture without modifying or replacing any other element of the existing light fixture.

Abstract: A magnetic pattern detection system (200) includes a housing (201), and a magnetic detector (100) including at least one magneto resistive (MR) sensor array (144) having an easy axis within the housing. A magnetic field source (151, 152) is within the housing (201), wherein the magnetic field source is operable when turned on to provide a magnetic field to line up random magnetic domains along the easy axis of the MR array (144). An amplifier (170) within the housing (201) is coupled to an output of the MR sensor array (144).

Abstract: An apparatus and method for measuring the position of a member. The apparatus has a sonic waveguide, a generator for generating an interrogation sonic wave at a first position in the sonic wave guide, and a transducer for converting the interrogation sonic wave, at a second position in the sonic wave guide, to an interrogation signal. A timer can be enabled in response to the generator generating the interrogation sonic wave and stopped in response to the transducer converting the interrogation sonic wave so as to determine the propagation time delay of the interrogation sonic wave and the distance between the first and second positions. When the transducer is attached to a member, the position of the member can be determined from this distance. The apparatus can include a transmitter for transmitting the interrogation signal. The generator can be configured to generate an excitation sonic wave which is converted by the transducer to a power signal for powering the transmitter.

Abstract: An apparatus is provided to reduce strain transferred from a body, such as a shaft, to a strain sensor, such as a SAW device. The strain sensor is capable of measuring a maximum amount of strain. A strain absorber has the strain sensor mounted thereon and is arranged to mount the strain sensor to the body. The strain absorber is arranged to transfer a reduced amount of strain from the body to the strain sensor so that the strain on the strain sensor is no greater that the maximum amount of strain.