Abstract: Disclosed herein are systems, methods, and devices for facilitating officials during a sporting event. According to one embodiment, a device is disclosed including a processor, a memory electrically coupled with the processor, a microphone interface electrically coupled with the processor, a user interface electrically coupled with the processor, a haptic feedback device electrically coupled with the processor; and a wireless transceiver electrically coupled with the processor.

Abstract: A desaturation detector receives signals from a gate driver and circuitry that indicate whether a power semiconductor device is on and in desaturation. A logic circuit produces a signal as a function of the signals, from which a latch circuit produces an output signal. The signal has first and second values respectively in an as-designed condition, and in a short-circuit condition in which the power semiconductor device is on and in desaturation. The output signal has the first value, and transitioned and latched to the second value in response to a transition to the short-circuit condition, which causes the gate driver to switch the power semiconductor device off. And filter(s) reduce noise within the desaturation detector.

Abstract: A desaturation detector receives signals from a gate driver and circuitry that indicate whether a power semiconductor device is on and in desaturation. A logic circuit produces a signal as a function of the signals, from which a latch circuit produces an output signal. The signal has first and second values respectively in an as-designed condition, and in a short-circuit condition in which the power semiconductor device is on and in desaturation. The output signal has the first value, and transitioned and latched to the second value in response to a transition to the short-circuit condition, which causes the gate driver to switch the power semiconductor device off. And filter(s) reduce noise within the desaturation detector.

Abstract: A Coriolis-type fluid flow rate measuring system uses phase locked loop-based signal processing to estimate a tube vibration signal and maintain optimum tube vibrations. Analog sinusoidal sensor signals from the flow meter are digitized and processed through heterodyne mixing as part of phase locked loop tracking of the fundamental vibration or oscillation frequency. Digital signal processing is used to implement filtering and signal manipulation so as to respectively determine phase and frequency estimates for both of the two digitized signals. Frequency estimate data is used to adjust the tracker frequency mixed with the respective sensor signals. Digitally obtained phase and frequency estimate data are used to determine an optimized drive signal for continuing tube vibration. Phase estimate information for the two respective sensor signals is used to determine phase shift data, used in turn to determine a fluid flow rate through the flow meter.