US4103161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite transducer
Assignee: Babcock and Wilcox Co
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Filing: 1976-07-15
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Granted: 1978-07-25
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Expires: 1996-07-15
Abstract
Abstract A composite transducer for the measurement of a physical condition such as, but not limited to, temperature, pressure, liquid level, rate of flow, concentration of a constituent gas in a mixture of gases, or neutron flux density; wherein the output signal of a prompt responding but relatively inaccurate sensor is combined with the output signal of a slow responding but relatively accurate sensor to generate a composite transducer output signal having a response time comparable to that of the fast responding sensor and an accuracy equal to that of the slow responding sensor.
Inventors
- 👤 Frederick Young Thomasson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:04
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/10; G21C17/108; G01; G01D; G01D1/00; G01D1/16; G01D18/00; G01D18/002; G01D18/004; G01D5/00; G01D5/12; G01K; G01K7/00; G01T; G01T3/00; G01T3/006; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
125 words
A transducer generating an output signal proportional to the magnitude of a physical condition, comprising, a first prompt responding sensor generating a signal corresponding to the magnitude of the physical condition, a second slow responding sensor generating a signal corresponding to the magnitude of the physical condition of high accuracy relative to the accuracy of the first sensor but having a long time constant relative to the time constant of the first sensor, a circuit responsive to the signals generated by the first and second sensors generating an output signal varying in accordance with changes in the signal generated by the first sensor and including means adjusting the circuit output signal to correspond to the signal generated by the second sensor at a controlled rate.
Claim 2
Dependent Claim
125 words
A transducer generating an output signal proportional to the magnitude of a physical condition, comprising, a first prompt responding sensor generating a signal corresponding to the magnitude of the physical condition, a second slow responding sensor generating a signal corresponding to the magnitude of the physical condition of high accuracy relative to the accuracy of the first sensor but having a long time constant relative to the time constant of the first sensor, a circuit responsive to the signals generated by the first and second sensors generating an output signal varying in accordance with changes in the signal generated by the first sensor and including means adjusting the circuit output signal to correspond to the signal generated by the second sensor at a controlled rate.
Claim 3
Dependent Claim
46 words
In a transducer as set forth in claim 1 wherein said last named means modifies the circuit output signal at a rate proportional to the time integral of the deviation in the signal generated by the first sensor from the signal generated by the second sensor.
Claim 4
Dependent Claim
31 words
In a transducer as set forth in claim 1 further including means modifying the signal generated by the first sensor proportional to changes in the signal generated by the second sensor.
Claim 5
Dependent Claim
47 words
In a transducer as set forth in claim 1 further including means modifying the signal generated by the first sensor at a rate proportional to the time integral of the deviation in the signal generated by the first sensor from the signal generated by the second sensor.
Claim 6
Dependent Claim
100 words
In a transducer as set forth in claim 4 wherein said modifying means includes a difference unit generating an output signal proportional to the difference between the signals generated by the first and second sensors, an integrating unit responsive to the output signal of the difference unit generating an output signal proportional to the time integral of the difference unit output signal and a multiplying unit multiplying the signal generated by the first sensor by the signal output of the integrating unit to generate a modified signal from said first sensor equal to the signal generated by the second sensor.
Claim 7
Dependent Claim
34 words
A transducer as set forth in claim 3 wherein said modifying means includes a summing unit generating an output signal proportional to the sum of the signals generated by the first and second sensors.
Claim 8
Dependent Claim
46 words
In a transducer as set forth in claim 1 wherein said circuit includes function generators responsive, respectively, to the signals generated by the first and second sensors and generating output signals varying in predetermined functional relationship to the signals generated by the first and second sensors.
Claim 9
Dependent Claim
42 words
A transducer as set forth in claim 1 wherein said first prompt responding sensor is a self powered ytterbium sensor responsive to neutron flux density and said second slow responsive sensor is a self powered rhodium sensor responsive to neutron flux density.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |