Circuit for processing the output signal from a resistive analog sensor, in particular for the fuel gauge of a motor vehicle, and systems fitted therewith
First Claim
1. A circuit for processing the output signal from a resistive analog sensor, comprising firstly digital filter means, and secondly a module forming a digital-to-impedance converter, which means and module are interposed in series between the output of the sensor and the input of an associated load, said digital-to-impedance converter presenting an output impedance that is variable as a function of the output signal from the digital filter means, which output impedance is equivalent to the output resistance of the sensor.
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Abstract
The present invention relates to a circuit for processing the output signal from a resistive analog sensor, comprising firstly a digital filter, and secondly a module forming a digital-to-impedance converter, which filter and module are interposed in series between the output of the sensor and the input of an associated load, the digital-to-impedance converter presenting an output impedance that is variable as a function of the output signal from the digital filter, which is equivalent to the output resistance of the sensor.
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60 Claims
- 1. A circuit for processing the output signal from a resistive analog sensor, comprising firstly digital filter means, and secondly a module forming a digital-to-impedance converter, which means and module are interposed in series between the output of the sensor and the input of an associated load, said digital-to-impedance converter presenting an output impedance that is variable as a function of the output signal from the digital filter means, which output impedance is equivalent to the output resistance of the sensor.
Specification