Abstract:
A system including magnetic sensing elements and a circuit. The magnetic sensing elements are configured to sense a magnetic field that is generated via a current and to provide signals that correspond to the magnetic field. The circuit is configured to determine calibration values based on the signals and measure the current based on the signals.
Abstract:
A tire tread sensing system includes a magnetic field sensor and a magnetic field source configured to magnetize magnetizable particles embedded in a tire tread. The magnetic field sensor is configured to measure a magnetic field strength associated with the magnetic field source and the magnetizable particles, and the magnetic field strength is indicative of a tire tread depth. Alternatively, the particles comprise alternating permanent magnets embedded in a tread portion of a tire.
Abstract:
A system including an encoder, multiple sensing elements and control logic. The encoder has a pole pitch and is configured to rotate in a direction of rotation. The multiple sensing elements are situated along the direction of rotation and span at least half the length of the pole pitch. The control logic is configured to receive signals from the multiple sensing elements based on the encoder in a static position and obtain a switching point based on the signals.
Abstract:
In one embodiment, a method comprises sampling a sensor during rotation, determining a percentage of samples within a target range, and calculating a circumferential portion of the rotation associated with the percentage of samples. In other embodiments, additional systems and methods and disclosed.
Abstract:
A system including a first electrode, a second electrode, a first circuit and a second circuit. The second electrode is capacitively coupled to the first electrode. The first circuit is configured to receive data via a network and transmit a signal via the first electrode based on the data. The second circuit is configured to receive data via the network and receive a current that corresponds to the signal via the second electrode based on the data.
Abstract:
An angular position measurement system including a continuous angular position sensor configured to provide a first signal representative of a continuous angular position of a rotating shaft, an incremental angular position sensor configured to provide a second signal representative of incremental angular positions of the rotating shaft, and a controller configured to calibrate the first signal based on the second signal to provide a third signal representative of a calibrated continuous angular position of the rotating shaft.
Abstract:
A predictive sensor readout is suitable for coupling to a sensor. The predictive sensor readout includes a sampling circuit, a predictor, and a preset circuit. The sampling circuit is configured to receive and over-sample previously digitized samples of signals previously input from the sensor. The predictor is coupled to the sampling circuit and is configured to receive the over-sampled digitized samples into a signal history and to generate a predicted input from the sensor based on the signal history. The preset circuit is coupled to the predictor and the sampling circuit and is configured to present the sampling circuit to receive the predicted input from the sensor prior to sampling an actual input from the sensor.
Abstract:
A capacitance sensor, having at least one electrode is disclosed. A frequency spread signal generation circuit is coupled to the at least one electrode to apply a frequency spread signal based on a spread sequence. A periodic signal with a frequency is coupled to the at least one electrode. A frequency controller is coupled to the frequency spread signal generation circuit to vary the frequency of the periodic signal. A receiver circuit is coupled to the at least one or a further electrode to receive a version of the frequency spread signal which depends on a capacitance applied to the at least one electrode. An evaluation circuit is coupled to the receiver circuit to determine a capacitance value based on the received, dependent version of the frequency spread signal.
Abstract:
A power supply arrangement has a charge storage means, a charge means, a reference signal source and a processing means. The power supply arrangement is implemented to provide the output signal with the predetermined output signal level at the output terminal based on the supplementary supply signal or based on a combination of the supplementary supply signal and the input signal, if the actual input signal level is lower in amount to the set input signal level. The power supply arrangement can be used in a side airbag sensor system, wherein a power supply and communication protocol is used, which transmits an input signal in the form of a transmitted pulse to a sensor via the voltage supply, to store energy based on the transmitted pulse and to use the same to maintain an output level at the output of the voltage supply, when the input voltage falls below a critical threshold.
Abstract:
A phase locked loop (PLL) circuit includes a first signal detector having a first input terminal configured to receive a varying first input signal, a second input terminal configured to receive a feedback signal that corresponds to the center of the input frequency, and an output terminal configured to provide an output signal corresponding to a phase difference between the first input and feedback signals. A delay estimator has an input terminal configured to receive the output signal from the first phase detector and in response thereto, output a phase difference estimation signal. A variable delay circuit has an input terminal configured to receive the phase difference estimation signal and in response thereto, phase shift the second input signal.