Abstract: A stackable storage system includes a first container, a second container, and a latch moveable between a first position and a second position. The first container includes a projection extending away from the first container along a stacking direction. An edge portion extends from the projection along a plane substantially perpendicular to the stacking direction. The second container includes a recess. The recess receives the projection when the first container and the second container are stacked relative to one another in the stacking direction. The latch overlaps the edge portion with respect to the stacking direction while in the first position to secure the first container and the second container. The latch and edge portion are positioned in a non-overlapping manner relative to one another while the latch is in the second position to permit separation of the first container from the second container.

Abstract: A motion capture suit includes a top or pants, a sensor socket fixed to a portion of the top or the pants about a limb, and a sensor inserted in the sensor socket. The sensor includes a measurement device having measurement axes that are offset by about 45 degrees from a long axis of the limb.

Abstract: Light is transmitted through or from a separator of a battery cell or scattered within a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault.

Abstract: A water heater that includes a cylindrical storage tank, at least one heating element, and at least one temperature sensor is modeled using a one-dimensional model that includes: a vertical stack of disks representing the water volume in the cylindrical storage tank, and a stack of annular segments surrounding the vertical stack of disks. The stack of annular segments represents the cylindrical wall of the cylindrical storage tank. The one-dimensional model may be used by a condition-based maintenance system comprising an electronic data processing device configured to detect a failure mode present in the water heater based on an output of the water heating model component. Some illustrative failure modes include insulation disturbance, heating element failure, excessive sediment buildup, or a drip tube rupture.

Abstract: Light is transmitted from a light source through or from a separator of a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault. In particular, one or both of the light source and detector are enclosed within a battery cell housing.

Abstract: Light is transmitted from a light source through or from a separator of a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault. In particular, one or both of the light source and detector are enclosed within a battery cell housing and receive power from the electrodes of the battery cell.

Abstract: Light is transmitted from a light source through or from a separator of a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault. In particular, the separator and a battery cell electrolyte can be selected to provide waveguide properties.

Abstract: An assembly for clamping a tube includes a fitting including a land, a bolt housing, legs, and a tooth on each leg, a band surrounding an axis, contacting the land and formed with holes spaced along the band, and a bolt located in the bolt housing, including helical teeth engaged with said holes for changing a diameter of the band and forcing the tooth toward the band as the band is tightened by rotating the bolt.

Abstract: Light is transmitted from a light source through or from a separator of a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault. In particular, one or both of the light source and detector are enclosed within a battery cell housing and receive power from the electrodes of the battery cell.

Abstract: A water heater that includes a cylindrical storage tank, at least one heating element, and at least one temperature sensor is modeled using a one-dimensional model that includes: a vertical stack of disks representing the water volume in the cylindrical storage tank, and a stack of annular segments surrounding the vertical stack of disks. The stack of annular segments represents the cylindrical wall of the cylindrical storage tank. The one-dimensional model may be used by a condition-based maintenance system comprising an electronic data processing device configured to detect a failure mode present in the water heater based on an output of the water heating model component. Some illustrative failure modes include insulation disturbance, heating element failure, excessive sediment buildup, or a drip tube rupture.

Abstract: Embodiments of a drain modulator that uses high power switch sensing to control active pulldown are generally described herein. In some embodiments, a logic and sense module is arranged to receive a control signal for controlling an on and an off state of an input of a switch to turn a high power voltage at an output of the switch on and off. A pullup module and a pulldown module are coupled to the input of the switch. An active pulldown module coupled to the output of the switch. The logic and sense module monitors the input to the switch and activates the active pulldown module to drain the output of the switch to a zero voltage when the input of the switch transitions to the off state.

Abstract: Light is transmitted from a light source through or from a separator of a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault. In particular, one or both of the light source and detector are enclosed within a battery cell housing.

Abstract: A grommet for securing a tube includes an oval hole having a wide portion and a narrow portion, a recess located between upper and lower shoulders surrounding the hole, an inclined surface to guide the grommet into a mounting hole, and a lower surface that can be engaged by a connector on the tube.

Abstract: A flat panel active electronically scanned array (AESA) (1) includes heterogeneous integrated circuit DC-DC voltage converters (3) periodically placed on array elements (2). A heterogeneous integrated circuit (100, 400, 500, 600) includes a voltage converter (101) configured to receive an input voltage (VI), and to convert the input voltage to an output voltage (VO) that is different from the input voltage, the voltage converter (101) comprising an analog and/or digital PWM circuit (104). The heterogeneous integrated circuit (100, 400, 500, 600) also includes a feedback circuit (103) configured to receive the output voltage (VO), and to generate a control signal used to vary a pulse width of a PWM signal generated by the analog and/or digital PWM circuit (104). The digital PWM circuit (104) is implemented in a heterogeneous integrated circuit (100, 400, 500, 600) fabricated on a common substrate (606) using CMOS and GaN fabrication processes.

Abstract: A single monolithic integrated circuit (10) containing a solar cell (or cells) with a DC-DC converter includes: a substrate (120, 220); the solar cell (101) or a solar cell array (100, 100?) on the substrate for generating an output voltage; and the DC-DC converter (102) integrated on the substrate for receiving the output voltage to generate a converted voltage, which may be higher or lower than the solar generated voltage. The substrate may be a silicon <111>, silicon carbide, or sapphire substrate. A GaN RF power amplifier and a CMOS controller including PWM modulator may also be monolithically integrated with an InGaN solar cell array and a GaN DC-DC converter. GaN switches (113, 115, 117, 119) may be used to couple InGaN solar cells (101) in series or parallel within the solar cell array (100, 100?) to yield improved or optimal voltage and current levels as required by the load.

Abstract: Light is transmitted from a light source through or from a separator of a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault. In particular, the separator and a battery cell electrolyte can be selected to provide waveguide properties.

Abstract: An apparatus includes a headset having one or more speaker units. Each speaker unit is configured to provide audio signals to an operator. Each speaker unit includes an ear cuff configured to contact the operator's head. The headset further includes multiple sensors configured to measure one or more characteristics associated with the operator. At least one of the sensors is embedded within at least one ear cuff of at least one speaker unit. The sensors could include an electrocardiography electrode, a skin conductivity probe, pulse oximetry light emitting diodes and photodetectors, an accelerometer, a gyroscope, or a temperature sensor. The apparatus could also include a processing unit configured to analyze audio signals captured by a microphone unit of the headset to identify respiration by the operator or at least one voice characteristic of the operator.

Abstract: Light is transmitted through or from a separator of a battery cell or scattered within a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault.

Abstract: Embodiments of a drain modulator that uses high power switch sensing to control active pulldown are generally described herein. In some embodiments, a logic and sense module is arranged to receive a control signal for controlling an on and an off state of an input of a switch to turn a high power voltage at an output of the switch on and off. A pullup module and a pulldown module are coupled to the input of the switch. An active pulldown module coupled to the output of the switch. The logic and sense module monitors the input to the switch and activates the active pulldown module to drain the output of the switch to a zero voltage when the input of the switch transitions to the off state.

Abstract: An apparatus includes a headset having one or more speaker units. Each speaker unit is configured to provide audio signals to an operator. Each speaker unit includes an ear cuff configured to contact the operator's head. The headset further includes multiple sensors configured to measure one or more characteristics associated with the operator. At least one of the sensors is embedded within at least one ear cuff of at least one speaker unit. The sensors could include an electrocardiography electrode, a skin conductivity probe, pulse oximetry light emitting diodes and photodetectors, an accelerometer, a gyroscope, or a temperature sensor. The apparatus could also include a processing unit configured to analyze audio signals captured by a microphone unit of the headset to identify respiration by the operator or at least one voice characteristic of the operator.