Abstract: A sensor capable of detecting both airflow in spirometry and a full range of sound frequencies is provided. The airflow sensor includes a movable flap with one or more integrated strain gauges for measuring displacement and vibration. The sensor may be a bidirectional elastic flap airflow sensor that is capable of providing data needed for both spirometry and auscultation measurements. The sensor is provided in connection with a software module that analyzes sensor output waveforms and provides for correction functions that correct for certain non-linear response functions of the flap. The correction functions are also suitable for non-medical fluid flow metering applications. Additional devices may also be affixed to the flap, such as sensors for the ambient level of various chemicals, sensors for temperature, sensors for humidity and microphones.

Abstract: Certain improvements in thin film sensors are disclosed, with particular emphasis on aircraft applications. In certain embodiments, dielectric isolation washers have been provided between the pressure sensor and the interior surface of the exterior metal housing of the sensor assembly. In this manner, high voltage inputs from a lightning strike or other source that reach the sensor housing are not transmitted to the sensor. In one embodiment, the dielectric washers, insulators, and potting compounds isolate the metal thin film pressure sensor from all adjacent metal components in the assembly with non-conducting insulating materials like Torlon, zirconia and nylon. Besides their high dielectric strength, these materials exhibit excellent compressive strength and outstanding resistance to wear, creep and chemicals. Certain minimum thickness for these components are described. The present thin film pressure sensor embodiments can attain a dielectric rating of 1500 VAC.

Abstract: The present disclosure relates to systems and methods for elastic delivery, processing, and storage for wearable devices based on system resources. For example, a wearable apparatus may have at least one battery; at least one sensor configured to measure at least one property associated with a user of the wearable apparatus; at least one memory storing measurements from the at least one sensor and instructions; at least one transmitter configured to send data to a device remote from the wearable apparatus; and at least one processor configured to execute the instructions to: receive, from the at least one battery, an indicator of a charge; and based on the received indicator, sending a command to the at least one sensor to operate in a low-power mode or a high-power mode, the low-power mode having. a lower sampling rate than the high-power mode.

Abstract: A transmissive ionizing-radiation beam monitoring system includes an enclosure structure including an entrance window and an exit window to an incident ionizing-radiation beam, where the entrance window and the exit window are highly transmissive. The system further includes a thin scintillator within the enclosure structure that is directly in an incident ionizing-radiation beam path and transmissive to the incident radiation beam and an ultraviolet (“UV”) illumination source within the enclosure structure facing the scintillator for internal system calibration. Embodiments further include a UV photosensor within the enclosure structure positioned to monitor and calibrate the UV illumination source and a machine vision camera within the enclosure structure that includes a lens which views the scintillator through a close proximity mirror including a folded optical axis system located to a side of the scintillator.

Abstract: A device for capturing and concentrating volatile organic compounds (VOCs) in a sample of breath air. The device includes an intake for accepting an air sample; a disposable mouth piece; a sensor array for measuring physical parameters of the air sample; an exhaled air sampler for capturing a pre-determined volume of air; a concentrator for concentrating VOCs in the air sample; and an ionic liquid collector, the latter of which may be removed from the device. The ionic liquid collector, which may have one compartment or multiple compartments, includes at least one ionic liquid. Analysis of VOCs in the ionic liquid or liquids may identify biomarkers that can provide a medical diagnosis for a human patient based on a sample of breath air.

Abstract: A system for insert detection includes a sensor and a processor. The processor is configured to receive capacitance measurement associated with the sensor and determine presence or absence of an insert based at least in part on the capacitance measurement and a threshold.

Abstract: A gas sensor is provided in which a solid electrolyte tape of yttria doped zirconia is layered with tapes of alumina and a tape if mixed alumina-zirconia. This zirconia layer has structural modifications to increase NOx and NH3 sensitivity which the capacitance is significantly increased by creating a composite layer of platinum (Pt) plus a layer of yittrium-stabilized-zirconia (YSZ) with Pt fraction of approximately between around 10% by volume to around 25% by volume. A 100-200 ?m thick mixed tape layer of porous MgAl2O4 is provided on top of the alumina-zirconia layer. Under the alumina-zirconia tape is an exhaust gas sensing electrode which connects to a contact pad through the lead. A reference electrode, which connects to the pad through a lead, is disposed in fluid communication with a reference chamber. Proximate alumina tapes and a heater are connected to the contact pad, which is connected to corresponding leads.

Abstract: A unique solution to measure NOx emissions is achieved less expensively and with much greater sensitivity than commercially available NOx sensors. A sensor's active materials are modified and operational algorithms are used to concurrently measure single ppm levels of NOx and NH3 with response times of one second or less. A combined NOx/NH3 sensor to have much finer control of an SCR system, thereby reducing NOx emissions and ammonia slip in a closed-loop device, all at lower cost than the current state-of-the-art solutions.

Abstract: A scale sensor comprises sensor electrodes including an uncoated porous metal working electrode and a counter electrode; and an impedance analyzer electrically coupled to the sensor electrodes. A method of monitoring scale deposition comprises placing an uncoated porous metal working electrode and a counter electrode in a fluid to be monitored; and monitoring scale deposition on the uncoated porous metal working electrode using an impedance analyzer electrically coupled to the uncoated porous metal working electrode and the counter electrode.

Abstract: A system and method for preventing scale in a well. The system includes a conduit providing fluid communication between a first location and a second location and a sensor at the second location configured to measure scale deposition in the fluid and a value of a fluid parameter. A scale deposition at the first location is determined from the scale deposition at the second location and the fluid parameter at the second location. A scale inhibitor is injected at the first location based on the determined scale deposition at the first location.

Abstract: This disclosure relates to systems, media, and methods for quantifying and monitoring exercise parameters and/or motion parameters, including performing data acquisition, analysis, and providing scientifically valid, clinically relevant, and/or actionable diagnostic feedback. Disclosed embodiments may receive real-time sensor data from a motion sensor or sensors mounted on a user and/or equipment while a user performs a test motion. Disclosed embodiments may also calculate a test motion profile based on the real-time sensor data, the test motion profile describing a multi-dimensional representation of the test motion performed by the user or computed motion profiles. Disclosed embodiments may include comparing the test motion profile to a template motion profile to determine a deviation amount for the test motion profile indicating how the test motion deviated from the template motion profile. Still further embodiments may correlate test motion profiles over time with health indicators.

Abstract: A wireless near-field gas sensor system includes a wireless communications tag and a printed gas sensor. The wireless communications tag includes an integrated circuit and a wireless antenna. The printed gas sensor includes a sensor housing having one or more gas access regions, an electrolyte cavity positioned within the sensor housing, an electrolyte housed within the electrolyte cavity, and one or more electrodes positioned within the electrolyte cavity in electrochemical engagement with the electrolyte, and a resistor communicatively coupled to the one or more electrodes and the wireless communications tag.

Abstract: This disclosure relates to systems, media, and methods for quantifying and monitoring exercise parameters and/or motion parameters, including performing data acquisition, analysis, and providing scientifically valid, clinically relevant, and/or actionable diagnostic feedback. Disclosed embodiments may receive real-time sensor data from a motion sensor or sensors mounted on a user and/or equipment while a user performs a test motion. Disclosed embodiments may also calculate a test motion profile based on the real-time sensor data, the test motion profile describing a multi-dimensional representation of the test motion performed by the user or computed motion profiles. Disclosed embodiments may include comparing the test motion profile to a template motion profile to determine a deviation amount for the test motion profile indicating how the test motion deviated from the template motion profile. Still further embodiments may correlate test motion profiles over time with health indicators.

Abstract: A device for measuring the concentrations of volatile organic compounds (VOCs) in air. The device includes a sample chamber for accepting a sample of air; at least one ionization source for ionizing VOCs in the sample; an ionic liquid trap containing an ionic liquid that captures the ionized VOCs; a circuit for generating a electric current through the device to run the ionization and capture of the ionized VOCs; and a chemical sensor for detecting and measuring concentrations of the VOCs in the sample of air. The device, which may be hand-held, portable, or designed to sit on a bench top, may be used on any animal, including humans.

Abstract: Systems and methods for cardiopulmonary resuscitation feedback are disclosed. According to an aspect, a method includes determining a force. The method also includes, in response to determining the force, acquiring spatial orientation data, remove the effects of gravity, and wirelessly or wired method of communicating the spatial orientation data.

Abstract: Implementations a method using a collision detection device associated with a user to detect a moving object in an environment and provide an alert to the user are provided. In some implementations the environment comprises at least one transmitter of opportunity. In some implementations, the collision detection device comprises a receiver and a processor. In some implementations, the method comprises receiving at the collision detection device Wi-Fi signals reflected from the moving object where the Wi-Fi signals originate from a Wi-Fi source not associated with the moving object. The method further comprises detecting, measuring, and tracking the Doppler effect of the Wi-Fi signals at the collision detection device to track velocity vector relative to the collision detection device. The method further comprises calculating the time of arrival of the moving object based on the velocity vector relative to the location of the collision detection device.

Abstract: An ultra-thin radiation detector includes a radiation detector gas chamber having at least one ultra-thin chamber window and an ultra-thin first substrate contained within the gas chamber. The detector further includes a second substrate generally parallel to and coupled to the first substrate and defining a gas gap between the first substrate and the second substrate. The detector further includes a discharge gas between the substrates and contained within the gas chamber, where the discharge gas is free to circulate within the gas chamber and between the first and second substrates at a given gas pressure. The detector further includes a first electrode coupled to one of the substrates and a second electrode electrically coupled to the first electrode. The detector further includes a first discharge event detector coupled to at least one of the electrodes for detecting a gas discharge counting event in the electrode.

Abstract: A programmable interface module includes a linear power regulator to control and provide power to interfaced components on an as needed basis. The interface module is implemented in, for example, a sensor pack and multiplexed to a plurality of sensor modules. In a first mode, the linear voltage regulator provides a relatively small amount of power which allows a sensor module to output a signal responsive to detecting an environmental condition (e.g., gamma or x-ray radiation, extreme temperatures, etc.). The interface module can switch the linear voltage regulator to a second mode in which the linear voltage regulator ramps up the amount of power provided to a detecting sensor module. The sensor module can then provide a level indicative of a concentration or intensity of the environmental condition. If the level surpasses a predetermined threshold, the sensor pack can output an alert signal to security server.

Abstract: A printed gas sensor is disclosed. The sensor may include a partially porous substrate, an electrode layer, an electrolyte layer, and an encapsulation layer. The electrode layer comprises one or more electrodes that are formed on one side of the porous substrate. The electrolyte layer is in electrolytic contact with the one or more electrodes. The encapsulation layer encapsulates the electrode layer and electrolyte layer thereby forming an integrated structure with the partially porous substrate.

Abstract: A system for determining a material property is disclosed. In some embodiments, a method for determining a material property comprises receiving a set of material responses corresponding to a set of ultrasonic excitations. The set of material responses are determined using measurements to determine a peak response for each of the set of ultrasonic excitations. In some embodiments, a device for making non-destructive in-situ measurements of the elastic yield strength of a sample (e.g., a steel plate or pipeline wall) is disclosed. The device determines the yield strength of a specimen based on transducing ultrasonic waves within the medium and correlating quantifiable characteristics of the resulting frequency response to the intrinsic elastic nonlinearity of the material. In various embodiments, the device includes one or more electrodes, an acoustic termination, a horn, a flange, a collar, power electronics, signal processors, a memory, a user interface, or any other appropriate device component.