Frequency increasing sensor protocol in magnetic sensing

    公开(公告)号:US11137456B2

    公开(公告)日:2021-10-05

    申请号:US16906142

    申请日:2020-06-19

    Abstract: A magnetic sensor is configured to measure a magnetic field whose magnitude oscillates between a first extrema and a second extrema. The magnetic sensor includes a plurality of magnetic field sensor elements, each configured to generate a sensor signal in response to the magnetic field impinging thereon. The plurality of sensor elements are grouped into a first group from which a first measurement signal is derived and a second group from which a second measurement signal is derived, and the first measurement signal and the second measurement signal having a phase difference based on different phases. The magnetic sensor further includes a sensor circuit configured to receive the first measurement signal and the second measurement signal, and apply a signal conversion algorithm thereto to generate a converted measurement signal having an increased frequency with respect to the first measurement signal and the second measurement signal.

    Passive bridge circuit with oxide windows as leakage sink

    公开(公告)号:US10859638B2

    公开(公告)日:2020-12-08

    申请号:US16170893

    申请日:2018-10-25

    Abstract: Leakage current detection systems and detection methods are provided. A leakage current detection system includes a passive bridge circuit disposed on a circuit substrate, the passive bridge circuit including a first branch having a first output and a second branch having a second output; a leakage surge structure disposed on the circuit substrate, where the leakage surge structure is electrically connected to a common node at which the first branch and the second branch are connected and is configured to draw a leakage current thereto from the passive bridge circuit; and a processing device configured to monitor for the leakage current, including summing a first output value at the first output with a second output value at the second output to determine a summed value, performing a common mode test using the summed value, and outputting a monitored result based on the common mode test.

    Apparatus and method for determining a state parameter of an object to be monitored

    公开(公告)号:US10532617B2

    公开(公告)日:2020-01-14

    申请号:US14585389

    申请日:2014-12-30

    Abstract: An apparatus for determining a state parameter of an object to be monitored comprises a means for providing a plurality of measurement values, wherein the measurement values comprise information relating to the state parameter of the object to be monitored, a comparison means for comparing the measurement value to a predeterminable comparison parameter, wherein the comparison means is formed to output a first comparison signal when a predeterminable number of measurement values falls below the comparison parameter within a measurement interval, or to output a second comparison signal when the predeterminable number of measurement values exceeds or reaches the comparison parameter, wherein the first comparison signal or the second comparison signal indicate the state parameter.

    Sensor self-diagnostics using multiple signal paths

    公开(公告)号:US10145882B2

    公开(公告)日:2018-12-04

    申请号:US15132783

    申请日:2016-04-19

    Abstract: Embodiments relate to systems and methods for sensor self-diagnostics using multiple signal paths. In an embodiment, the sensors are magnetic field sensors, and the systems and/or methods are configured to meet or exceed relevant safety or other industry standards, such as SIL standards. For example, a monolithic integrated circuit sensor system implemented on a single semiconductor ship can include a first sensor device having a first signal path for a first sensor signal on a semiconductor chip; and a second sensor device having a second signal path for a second sensor signal on the semiconductor chip, the second signal path distinct from the first signal path, wherein a comparison of the first signal path signal and the second signal path signal provides a sensor system self-test.

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