Abstract: Apparatus, systems, and methods for hemodynamic monitoring are provided. In some embodiments, the hemodynamic monitoring includes use of an IV fluid administered through a blood pressure transducer. The blood pressure transducer generates an electrical signal that is transmitted to a hemodynamic monitor to generate a blood pressure measurement. The blood pressure transducer may comprise a first chamber to receive and transmit an IV fluid, a second chamber connected to a reference tube and filed with reference fluid, and a pressure sensor configured to generate the electrical signal the blood pressure measurement is generated from.

Abstract: Systems, apparatuses, and methods for battery monitoring and management are provided. An example battery includes one or more battery modules, and each battery module includes one or more battery cells. A plurality of sensors, including temperature sensors, voltage sensors, and current sensors, generate sensor data for the battery, battery modules, and battery cells. The sensor data is compacting into coefficient data based on a polynomial equation. Performance indicators are generated based on the coefficient data. One or more alarms are generated based on the performance indicators, including alarms that may provide a warning to a user, an alert to a user, or a stop signal to the battery or equipment powered by the battery.

Abstract: Sensors, methods, and computer program products for air bubble detection are provided. An example method includes determining a first moving average for a first period of time based upon first temperature data and determining a second moving average for the first period of time based upon second temperature data. The method includes determining a first air presence parameter based upon a comparison between the first temperature data and the first moving average and a comparison between the second temperature data and the second moving average. The method includes determining a second air presence parameter based upon a comparison between the first temperature data, the second temperature data, and calibrated air thresholds. The method includes determining a third air presence parameter based upon a comparison between a first temperature data entry and each second temperature data entry. An air bubble within a fluid flow system is detected based upon the parameters.

Abstract: Sensors, methods, and computer program products for air bubble detection are provided. An example method includes determining a first moving average for a first period of time based upon first temperature data and determining a second moving average for the first period of time based upon second temperature data. The method includes determining a first air presence parameter based upon a comparison between the first temperature data and the first moving average and a comparison between the second temperature data and the second moving average. The method includes determining a second air presence parameter based upon a comparison between the first temperature data, the second temperature data, and calibrated air thresholds. The method includes determining a third air presence parameter based upon a comparison between a first temperature data entry and each second temperature data entry. An air bubble within a fluid flow system is detected based upon the parameters.

Abstract: A fluid sensor for monitoring a flow tube of a fluid flow system is provided. The fluid sensor comprises a housing to hold a portion of the flow tube, and the housing defines a first cavity, a second cavity, a first fixture and a second fixture. The fluid sensor comprises an ultrasonic transducer disposed within the first cavity and a force sensor disposed within the second cavity. The ultrasonic transducer has an emitting face to emit ultrasonic signals, and the emitting face is configured to face the portion of the flow tube. The first fixture extends along a boundary of the first cavity and the second fixture extends along a boundary of the second cavity.

Abstract: Sensors, methods, and computer program products for air bubble detection are provided. An example method includes determining a first moving average for a first period of time based upon first temperature data and determining a second moving average for the first period of time based upon second temperature data. The method includes determining a first air presence parameter based upon a comparison between the first temperature data and the first moving average and a comparison between the second temperature data and the second moving average. The method includes determining a second air presence parameter based upon a comparison between the first temperature data, the second temperature data, and calibrated air thresholds. The method includes determining a third air presence parameter based upon a comparison between a first temperature data entry and each second temperature data entry. An air bubble within a fluid flow system is detected based upon the parameters.

Abstract: According to one embodiment, a first capacitive element may be provided and associated with a surface where a fouling layer is to be detected. A second capacitive element may also be provided, and a capacitance between the first and second capacitive elements may be used to detect formation of the fouling layer. According to another embodiment, a thermal device is provided proximate to a surface where a fouling layer is to be detected. A detector (e.g., a thermometer or vibration detector) may detect a condition associated with the surface, and formation of the fouling layer may be determined based at least in part on the condition.

Abstract: According to one embodiment, a first capacitive element may be provided and associated with a surface where a fouling layer is to be detected. A second capacitive element may also be provided, and a capacitance between the first and second capacitive elements may be used to detect formation of the fouling layer. According to another embodiment, a thermal device is provided proximate to a surface where a fouling layer is to be detected. A detector (e.g., a thermometer or vibration detector) may detect a condition associated with the surface, and formation of the fouling layer may be determined based at least in part on the condition.

Abstract: According to some embodiments, an apparatus includes a substrate that defines a plane. The apparatus also includes a first conducting plate that is substantially normal to the substrate and a second conducting plate that is (i) substantially normal to the substrate and (ii) deformable in response to a pressure.

Abstract: According to some embodiments, an apparatus includes a substrate that defines a plane. The apparatus also includes a first conducting plate that is substantially normal to the substrate and a second conducting plate that is (i) substantially normal to the substrate and (ii) deformable in response to a pressure.

Abstract: An electronically controlled grade crossing gate system and method. The system includes a gate arm, a gate arm moving assembly, a position sensor assembly and a controller. The gate arm moving assembly is configured to move the gate arm and the position sensor assembly is configured to sense a position of the gate arm. The position sensor assembly is a non-contact position sensor assembly. The controller is coupled to the gate arm moving assembly and the position sensor assembly and it is configured to receive an incoming command related to the gate arm. The controller activates the gate arm moving assembly in response to the incoming command and communicates with the position sensor assembly to monitor the position of the gate arm.

Abstract: A differential pressure sensing system is provided. The sensing system includes a membrane layer having a channel extending diametrically therein, and including one or more cavities provided radially outbound of the channel and at least one resonant beam disposed in the channel and configured to oscillate at a desired frequency. The system further includes sensing circuitry configured to detect oscillation of the at least one resonant beam indicative of deformation in the membrane layer.

Abstract: According to some embodiments, an apparatus includes a substrate that defines a plane. The apparatus also includes a first conducting plate that is substantially normal to the substrate and a second conducting plate that is (i) substantially normal to the substrate and (ii) deformable in response to a pressure.

Abstract: According to some embodiments, an apparatus includes a substrate that defines a plane. The apparatus also includes a first conducting plate that is substantially normal to the substrate and a second conducting plate that is (i) substantially normal to the substrate and (ii) deformable in response to a pressure.

Abstract: According to some embodiments, an apparatus includes a substrate that defines a plane. The apparatus also includes a first conducting plate that is substantially normal to the substrate and a second conducting plate that is (i) substantially normal to the substrate and (ii) deformable in response to a pressure.

Abstract: A system for monitoring and controlling activation of a warning system includes a sensor module locally coupled to the warning system for sensing and controlling a flashing light of the warning system, a transceiver responsive to a microcontroller, and a power line interface for interfacing between the transceiver and the power line servicing the warning system. The sensor module includes a sensor arranged for sensing the flashing light, the microcontroller coupled to the sensor, and a power supply for providing power to the sensor module.

Abstract: According to some embodiments, an apparatus includes a substrate that defines a plane. The apparatus also includes a first conducting plate that is substantially normal to the substrate and a second conducting plate that is (i) substantially normal to the substrate and (ii) deformable in response to a pressure.

Abstract: A system for modulating a carrier frequency to support nondestructive bitwise arbitration of a communication medium. The system comprises a first sensor module coupled to a power supply line via a first power line coupling circuit. The first sensor module comprises a first micro-controller and a first transceiver. The first transceiver includes a first transmitter for converting a digital signal received from the first micro-controller into a first analog signal for transmission over the power supply line. The first transmitter includes a first oscillator operating within an allowable frequency deviation to provide a first predetermined onset phase. The system further comprises a second sensor module coupled to the power supply line via a second power line coupling circuit. The second sensor module comprises a second micro-controller and a second transceiver.

Abstract: A system for modulating a carrier frequency to support nondestructive bitwise arbitration of a communication medium. The system comprises a first sensor module coupled to a power supply line via a first power line coupling circuit. The first sensor module comprises a first micro-controller and a first transceiver. The first transceiver includes a first transmitter for converting a digital signal received from the first micro-controller into a first analog signal for transmission over the power supply line. The first transmitter includes a first oscillator operating within an allowable frequency deviation to provide a first predetermined onset phase. The system further comprises a second sensor module coupled to the power supply line via a second power line coupling circuit. The second sensor module comprises a second micro-controller and a second transceiver.

Abstract: A system for monitoring and controlling activation of a warning system includes a sensor module locally coupled to the warning system for sensing and controlling a flashing light of the warning system, a transceiver responsive to a microcontroller, and a power line interface for interfacing between the transceiver and the power line servicing the warning system. The sensor module includes a sensor arranged for sensing the flashing light, the microcontroller coupled to the sensor, and a power supply for providing power to the sensor module.