Flow sensor with conditioning-coefficient memory
First Claim
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1. A sensor apparatus comprising:
- a first sensor transducer sensing a first parameter and outputting a first raw signal corresponding to said sensed first parameter;
signal-conditioning circuitry receiving said first raw signal output from said first sensor transducer, performing a coarse-correction on said first raw signal to produce a first coarsely-conditioned signal, and outputting said first coarsely-conditioned signal via a first sensor output; and
a storage location storing predetermined sensor-specific correction coefficients, said stored predetermined sensor-specific correction coefficients being provided to a second sensor output such that an end-user device, when coupled to the first and second sensor outputs, performs a fine-correction on said first coarsely-conditioned signal output from said signal-conditioning circuitry.
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Abstract
A sensor includes one or more sensor transducers coupled with a signal conditioning IC incorporating signal conditioning circuitry and memory devoted to storing end-user downloadable coefficients. In a preferred embodiment, the IC is an ASIC and the end-user downloadable coefficients are pre-selected by the end-user based on its needs, and the coefficients are pre-stored in the ASIC when the sensor is calibrated. This results in a more cost-effective and space-efficient sensor device with improved functionality over that available in the prior art.
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Citations
25 Claims
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1. A sensor apparatus comprising:
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a first sensor transducer sensing a first parameter and outputting a first raw signal corresponding to said sensed first parameter; signal-conditioning circuitry receiving said first raw signal output from said first sensor transducer, performing a coarse-correction on said first raw signal to produce a first coarsely-conditioned signal, and outputting said first coarsely-conditioned signal via a first sensor output; and a storage location storing predetermined sensor-specific correction coefficients, said stored predetermined sensor-specific correction coefficients being provided to a second sensor output such that an end-user device, when coupled to the first and second sensor outputs, performs a fine-correction on said first coarsely-conditioned signal output from said signal-conditioning circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of conditioning a sensor signal, comprising:
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configuring a first sensor transducer to sense a first parameter and output a first raw signal corresponding to said sensed first parameter; configuring a signal-conditioning circuit to receive said first raw signal output from said first sensor transducer, perform a coarse-correction on said first raw signal to produce a first coarsely-conditioned signal, and output said first coarsely-conditioned signal via a first sensor output; configuring a storage location to store predetermined sensor-specific correction coefficients; and outputting the stored predetermined sensor-specific correction coefficients to a second sensor output such that an end-user device, when coupled to the first and second sensor outputs, performs a fine-correction on said first coarsely-conditioned signal output from said signal-conditioning circuitry. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A sensor apparatus comprising:
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a plurality of sensor transducers, each sensing a parameter and outputting a raw signal corresponding to it respective sensed parameter; signal-conditioning circuitry receiving said each raw signal output from said plurality of sensor transducers, performing a coarse-correction on each of said raw signals to produce a coarsely-conditioned signal corresponding to each raw signal, and outputting each coarsely-conditioned signal via a first sensor output; and a storage location storing predetermined sensor-specific correction coefficients, said stored predetermined sensor-specific correction coefficients being provided to a second sensor output such that an end-user device, when coupled to the first and second sensor outputs, performs a fine-correction on each coarsely-conditioned signal output from said signal-conditioning circuitry.
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22. A sensor apparatus comprising:
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a first sensor transducer sensing a first parameter and outputting a first raw signal corresponding to said sensed first parameter; signal conditioning circuitry configured to receive said first raw signal that is output from said first sensor transducer, perform a first correction on said first raw signal to produce a first conditioned signal, and output said first conditioned signal via a first sensor output; a storage location configured to store predetermined sensor specific correction coefficients, said stored predetermined sensor specific correction coefficients being provided to a second sensor output such that an end-user device, when coupled to the first and second sensor outputs, performs a second correction on said first conditioned signal that is output from said signal conditioning circuitry; a second sensor transducer configured to sense a second parameter and output a second raw signal corresponding to said sensed second parameter; and wherein said signal conditioning circuitry is configured to receive said second raw signal output from said second sensor transducer, perform a third correction on said second raw signal to produce a third conditioned signal, and output said third conditioned signal via said first sensor output. - View Dependent Claims (23, 24, 25)
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Specification