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US 10,704,988 B2Granted
Sensor systems and methods having emulated line adaptation
AssigneeInfineon Technologies AG
InventorDirk Hammerschmidt
Life of this patent
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Abstract
A measurement system includes a signal bus, an electronic control unit, and an emulated sensor. The electronic control unit is coupled to the signal bus. The sensor with emulated line adaptation is also coupled to the signal bus. The emulated sensor is configured to adapt current consumption according to a selected impedance and a selected frequency range.
Claims21
A measurement system comprising:
- a signal bus;
- an electronic control circuit coupled to the signal bus;
- and
- at least one sensor with an emulated line adaptation circuit coupled to the signal bus, the emulated line adaptation circuit configured to adapt current consumption associated with the signal bus according to an adaptation amount for a selected impedance and a selected frequency range to provide the selected impedance;
- wherein the line adaptation circuit comprises a processing circuit, a supply measurement circuit and an emulated sensor filter circuit, wherein the emulated sensor filter circuit is configured to filter a supply voltage according to the selected impedance and the selected frequency range, the supply measurement circuit is configured to measure the filtered supply voltage and the processing circuit is configured to generate the adaptation amount based on the measured filtered supply voltage.
2 more elements
A sensor with emulated line adaptation comprising:
- a supply measure circuit configured to obtain a supply voltage measurement based on an emulated filtered supply voltage;
- a line adaptation circuit configured to generate a control signal according to a selected impedance, a selected frequency range, and the supply voltage measurement;
- an adaptation circuit configured to adapt a line impedance according to the control signal;
- and
- an emulated sensor filter circuit configured to generate the emulated filtered supply voltage based on the selected frequency and the selected impedance.
2 more elements
A method of operating a sensor system, the method comprising:
- setting an emulated sensor filter circuit for a selected impedance and a selected frequency range associated with a signal bus and filtering a supply voltage based on the selected impedance and the selected frequency range;
- measuring the filtered supply voltage;
- generating a control signal according to the measured supply voltage, the selected impedance and the selected frequency range;
- and
- adjusting current consumption according to the control signal.
2 more elements
Dependencies are inferred from the claim text.