Abstract: A sensor system includes an unmanned vehicle system is provided that includes a housing, and an environmental sensor system coupled to the housing, the environmental sensor system configured to detect one or more environmental conditions of an environment in operational contact with the unmanned vehicle system. The environmental sensor includes a sensing element that includes a sensing material to detect and quantify at least one analyte gas by measuring impedance of the sensing element at one or more frequencies of the different frequencies during exposure of the sensing material to the at least one analyte gas.

Abstract: A method and system to receive information from at least one multivariable sensor, each multivariable sensor being deployed in an environment, having internet connectivity to communicate with at least one other device over the internet, and selectively determining at least one attribute of multiple events in its environment; receive an indication of a location of the multivariable sensor; receive an indication of a location of an augmented reality device; determine an alarm based on the received information from the at least one multivariable sensor; determine a location for the alarm and a location of a solution associated with the alarm; and present, in a field of view display on the augmented reality device, a visualization of the determined alarm and at least one of the determined location for the alarm and the determined location for the solution associated with the alarm.

Abstract: A gas sensor system includes a gas sensing element that includes a gas sensing material and electrodes configured to apply electrical stimuli to the gas sensing material and one or more processors configured to control the gas sensing element. The one or more processors are configured to direct the electrodes to apply the electrical stimuli at two or more different electrical excitation frequencies to the gas sensing material. A first electrical excitation frequency of the two or more different electrical excitation frequencies is configured to provide a quantitative gas response of the gas sensing material, the quantitative gas response including a response drift. A second electrical excitation frequency of the two or more different electrical excitation frequencies is configured to provide a baseline response of the gas sensing material based at least in part on the response drift.

Abstract: A sensor system includes a sensing element that includes a sensing material and electrodes configured to apply a first electrical stimuli to the sensing material at an electrical excitation frequency, a modifier assembly including one or more circuits configured to change an electrical impedance of the sensing element, and one or more processors configured to control the modifier assembly. Responsive to exposure of gas to the sensing element, the one or more processors change a linearity of a first electrical signal received from the sensing element by changing the electrical impedance of the sensing element and applying a second electrical stimuli to the sensing material at the electrical excitation frequency.

Abstract: A sensor system includes a first sensor to detect environmental conditions of an environment in operational contact with a subject, a second sensor to detect physiological parameters of the subject in operational contact with an asset, and a control unit comprising one or more processors communicatively coupled with the first sensor and the second sensor. The processors receive a first signal from the first sensor indicative of the environmental conditions, and receive a second signal from the second sensor indicative of the physiological parameters of the subject, and determine a relation between the environmental conditions and the physiological parameters based on the first signal and the second signal. The processors determine a responsive action of the asset based on the first signal indicative of the environmental conditions of the environment or the second signal indicative of the physiological parameters of the subject in operational contact with the asset.

Abstract: Systems and methods are provided for environment sensing. The system includes a sensor node having a sensor. The sensor includes a sensing material configured to be in contact with an ambient environment. The system includes a remote system having a communication circuit and a controller circuit. The communication circuit is configured to be wirelessly communicatively coupled to the sensor node. The controller circuit electrically coupled to the communication circuit. The controller circuit configured to receive an impedance response of the sensing material and analyze the impedance response of the sensing material at frequencies that provide a linear response of the sensing material to an analyte of interest and at least partially reject effects of interferences.

Abstract: A system includes a bacteria culture array that includes a plurality of chambers each configured to receive a portion of a sample that includes bacteria. Each individual chamber of the plurality of chambers includes a chamber opening configured to permit access of the portion of the sample to the individual chamber. The system also includes one or more sensors configured to collect data from the individual chamber. The sensors are configured to contact the sample. Additionally, the system includes a monitoring and analysis system that includes a processor configured to receive the data from the one or more sensors at a first time and a second time, compare the data received at the second time to the data received at the first time, and identify a portion of the plurality of chambers of the bacteria culture array based on the comparing.

Abstract: A sensor assembly includes an impedance sensor element, an impedance sensor reader and a communications module. The communications module is configured to communicate with a remote computing device. The impedance sensor reader is coupled to the impedance sensor element. The impedance sensor reader includes a synthesizer and a detector. The synthesizer is configured to output an excitation signal having known values for a plurality of signal characteristics to the impedance sensor element and to generate the excitation signal based on a plurality of direct digital synthesizer (DDS) coefficients received from the remote computing device through the communications module. The detector is coupled to the impedance sensor element and configured to detect a response of the impedance sensor element to the excitation signal and determine an impedance of the impedance sensor element based at least in part on the response of the impedance sensor element to the excitation signal.

Abstract: A sensor system includes a multi-frequency sensor assembly including a single sensor body housing with a sensing region circuit and a sensor reader disposed in the sensor body. The sensor body is configured to be in operational contact with a fluid. The sensing region circuit is configured to generate different electric fields having different frequencies in the fluid. The sensor reader includes one or more processors configured to examine one or more impedance responses of the sensing region circuit at different frequencies and to determine one or more properties of the fluid based on the one or more impedance responses that are examined.

Abstract: Methods and sensors for selective fluid sensing are provided. A sensor includes a resonant inductor-capacitor-resistor (LCR) circuit and a sensing material disposed over the LCR circuit. The sensing material includes a coordination compound of a ligand and a metal nanoparticle. The coordination compound has the formula: (X)n-M, where X includes an alkylamine group having the formula (R—NH2), an alkylphosphine having the formula (R3—P), an alkylphosphine oxide having the formula (R3P?O), an alkyldithiocarbamate having the formula (R2NCS2), an alkylxanthate having the formula (ROCS2), or any combination thereof, R includes an alkyl group, n is 1, 2, or 3, and M includes the metal nanoparticle of gold, silver, platinum, palladium, alloys thereof, highly conductive metal nanoparticles, or any combination thereof. The sensing material is configured to allow selective detection of at least six different analyte fluids from an analyzed fluid mixture.

Abstract: A scanning system for producing a path averaged concentration map of a leaking plume is provided. The system includes a tunable light source capable of tuning its wavelength over the absorption band of the specimen of interest, a lightweight mirror to scan the light, a lightweight collection optic, an array of detectors to measure reflected light, one or more processors configured to align the scanning with the detected signal and analyze the signal to produce a path averaged concentration map of the leaking plume, the one or more processors configured to use an analytical model of plume dynamics to compare the detected concentration map and calculate leak location and rate, and a flying platform that can fly in a control flight path.

Abstract: A system for analysis of at least one analyte gas present in an insulating fluid of an electrical transformer includes a gas sensor in operational contact with at least one analyte gas from an insulating fluid to provide multiple responses from the sensor. One or more processors are configured to receive the multiple responses during exposure of the sensor to the analyte gas from the insulating fluid representative of a concentration of the analyte gas present in the insulating fluid. The processors are configured to select one or more responses of the multiple responses that provide rejection of interfering gases, resolution between gases, improved low detection range of the analyte gas, improved high detection range of the analyte gas, improved response linearity of the analyte gas, improved dynamic range of measurements of the analyte gas, or one or more combinations thereof compared to non-selected responses from the sensor.

Abstract: A sensor includes a resonant transducer, the resonant transducer being configured to determine the composition of an emulsion or other dispersion. The resonant transducer has a sampling cell, a bottom winding disposed around the sampling cell, and a top winding disposed around the bottom winding. The composition of the dispersion is determined by measuring the complex impedance spectrum values of the mixture of the dispersion and applying multivariate data analysis to the values.

Abstract: Methods and sensors for selective fluid sensing are provided. A sensor includes a resonant inductor-capacitor-resistor (LCR) circuit and a sensing material disposed over the LCR circuit. The sensing material includes a coordination compound of a ligand and a metal nanoparticle. The coordination compound has the formula: (X)n-M, where X includes an alkylamine group having the formula (R—NH2), an alkylphosphine having the formula (R3—P), an alkylphosphine oxide having the formula (R3P?O), an alkyldithiocarbamate having the formula (R2NCS2), an alkylxanthate having the formula (ROCS2), or any combination thereof, R includes an alkyl group, n is 1, 2, or 3, and M includes the metal nanoparticle of gold, silver, platinum, palladium, alloys thereof, highly conductive metal nanoparticles, or any combination thereof. The sensing material is configured to allow selective detection of at least six different analyte fluids from an analyzed fluid mixture.

Abstract: The subject matter of the present disclosure generally relates to systems and methods for sensing analytes with a high selectivity and low responses to interferences in an environment. In one embodiment, a sensor was developed which comprises a sensor electrode, a coupling element operationally coupled to a discrete segment of the sensor electrode, and an activation material in operational contact with the coupling element and configured to induce an irreversible sensor response for a selected sensing application.

Abstract: A sensing system includes a sensor and one or more processors. The sensor includes a sensing region in contact with an industrial fluid. The sensing region includes electrodes and a sensing region circuit electrically connected to the electrodes. The sensing region circuit generates an electrical stimulus having multiple different frequencies that are applied to the industrial fluid via the electrodes. The one or more processors receive one or more electrical signals from the sensor representative of an impedance response of the sensing region to the electrical stimulus. The one or more processors analyze the impedance response and determine at least one of a contaminant concentration of an external contaminant in the industrial fluid, an acid concentration of acidic components in the industrial fluid, or a base concentration of basic components in the industrial fluid based on the impedance response.

Abstract: Systems and methods are provided for environment sensing. The system includes a sensor node having a sensor. The sensor includes a sensing material configured to be in contact with an ambient environment. The system includes a remote system having a communication circuit and a controller circuit. The communication circuit is configured to be wirelessly communicatively coupled to the sensor node. The controller circuit electrically coupled to the communication circuit. The controller circuit configured to receive an impedance response of the sensing material and analyze the impedance response of the sensing material at frequencies that provide a linear response of the sensing material to an analyte of interest and at least partially reject effects of interferences.

Abstract: Systems and methods are provided for environment sensing. The system includes a sensor node having a sensor. The sensor includes a sensing material configured to be in contact with an ambient environment. The system includes a remote system having a communication circuit and a controller circuit. The communication circuit is configured to be wirelessly communicatively coupled to the sensor node. The controller circuit electrically coupled to the communication circuit. The controller circuit configured to receive an impedance response of the sensing material and analyze the impedance response of the sensing material at frequencies that provide a linear response of the sensing material to an analyte of interest and at least partially reject effects of interferences.

Abstract: A method of recovering a target from a sample is provided. The method comprises the adding a substrate coupled binding element to the sample comprising the target to form a substrate coupled binding element-target complex; precipitating the complex by changing one or more environmental conditions of the substrate and recovering the target and the substrate coupled binding-element under mild conditions.

Abstract: A sensor assembly includes an impedance sensor element, an impedance sensor reader and a communications module. The communications module is configured to communicate with a remote computing device. The impedance sensor reader is coupled to the impedance sensor element. The impedance sensor reader includes a synthesizer and a detector. The synthesizer is configured to output an excitation signal having known values for a plurality of signal characteristics to the impedance sensor element and to generate the excitation signal based on a plurality of direct digital synthesizer (DDS) coefficients received from the remote computing device through the communications module. The detector is coupled to the impedance sensor element and configured to detect a response of the impedance sensor element to the excitation signal and determine an impedance of the impedance sensor element based at least in part on the response of the impedance sensor element to the excitation signal.