Systems and methods for analyzing physical characteristics of a battery include arrangements of two or more transducers coupled to the battery. A control module controls one or more of the two or more transducers to transmit acoustic signals through at least a portion of the battery, and one or more of the two or more transducers to receive response acoustic signals. Distribution of physical properties of the battery is determined based at least on the transmitted acoustic signals and the response acoustic signals.

An ultrasonic imaging method is provided. A wideband acoustic pulse is fired at a wall. A wideband response signal is received. The wideband response signal is processed to select an impedance measurement frequency. A wavelet having a characteristic frequency approximately equal to the impedance measurement frequency is fired. A wavelet response signal is received. A reflection coefficient is determined from the wavelet response signal. An impedance measurement is calculated from the reflection coefficient. Related tools and systems are also disclosed.

The present disclosure relates to a method for detecting a DC magnetization in a transformer and controlling the transformer, the method including: sensing, using at least one vibration sensor, at least one vibration on at least one surface of the transformer or on at least one surface of a component connected to the transformer; measuring the sensed at least one vibration; detecting, based on the measured at least one vibration, the DC magnetization in the transformer; and controlling, based on the detected DC magnetization, the transformer. The present disclosure also relates to a respective device and system.

A device can include a holder, a radical sensor holder, a radical sensor disposed within the radical sensor holder, an electrical transmission line that is electrically coupled with the radical sensor, a flange that is spaced apart from the radical sensor holder, and a connector extending from the flange in a direction opposite the radical sensor holder. The connector includes a housing, an electrical connection disposed within the housing, the electrical connection being electrically coupled with the electrical transmission line, an isolator that couples the housing with the electrical connection to electrically insulate the housing from the electrical connection, a first sealing member disposed between the isolator and the housing, and a second sealing member disposed between the isolator and the electrical connection.

A method and apparatus for ultrasonic in-process monitoring and feedback of resistance spot weld quality uses at least one transducer located in the electrode assembly transmitting through a weld tip into an underway weld. Analysis of the spectrum of ultrasonic waves provides the operator with an indication of the size, thickness, location, dynamics of formation and quality of the spot weld. The method presents a fundamentally new physical approach to the characterization of the spot weld quality. Together with transmission mode it includes new modes of operation of ultrasonic probes such as a reflection mode and simultaneous use of transmission and reflection modes, and a new physical interpretation of the signal analysis results.

The present disclosure relates to a method for detecting a DC magnetization in a transformer and controlling the transformer, the method including: sensing, using at least one vibration sensor, at least one vibration on at least one surface of the transformer or on at least one surface of a component connected to the transformer; measuring the sensed at least one vibration; detecting, based on the measured at least one vibration, the DC magnetization in the transformer; and controlling, based on the detected DC magnetization, the transformer. The present disclosure also relates to a respective device and system.

The invention relates generally to an Internet of Things (IoT) enabled wireless sensor system using attached and/or embedded passive electromagnetic sensors (PES) with distribution hardware. One embodiment of this invention includes a wireless sensor system, which permits process control and predictive maintenance on a utility's electrical transmission and distribution grid. Another embodiment includes a wireless sensor system, which permits process control and predictive maintenance of liquid or gas through a pipeline. Another embodiment includes a wireless sensor system, which permits measurement of breathable air pollutants. Furthermore, a method of manufacturing a protective passive electromagnetic sensor pod and passive electromagnetic sensor equipped distribution hardware components is provided.

The invention relates generally to an Internet of Things (IoT) enabled wireless sensor system using attached and/or embedded passive electromagnetic sensors (PES) with distribution hardware. One embodiment of this invention includes a wireless sensor system, which permits process control and predictive maintenance on a utility's electrical transmission and distribution grid. Another embodiment includes a wireless sensor system, which permits process control and predictive maintenance of liquid or gas through a pipeline. Another embodiment includes a wireless sensor system, which permits measurement of breathable air pollutants. Furthermore, a method of manufacturing a protective passive electromagnetic sensor pod and passive electromagnetic sensor equipped distribution hardware components is provided.