IP Library › Granted Patent US 9,448,124
Granted Patent B2
US 9,448,124 · App. 13/883,113 · Granted Sep 20, 2016

Multiple temperature sensor system

Inventors: Paul J Hays (Lafayette, CO); Craig B. McAnally (Thornton, CO); Andrew S. Kravitz (Erie, CO)
Assignee: Micro Motion, Inc.
G01K13/00G01F1/84G01F1/849G01F1/8418G01F1/8431G01F1/8436G01F1/8468G01F15/022G01K1/026G01K7/20
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Quick Facts
Patent No.
US 9,448,124
App. No.
13/883,113
Granted
Sep 20, 2016
Kind
B2
Abstract

A multiple temperature sensor system ( 120 ) includes a temperature sensor network ( 180 ) including temperature-sensing resistors R T1 and R T2 ( 186, 187 ) and frequency-selective filters ( 184, 185 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186, 187 ). The frequency-selective filters ( 184, 185 ) pass distinct time-varying signals into the temperature sensor network ( 180 ) and pass attenuated distinct time-varying signals out. The system ( 120 ) further includes a temperature measurement N controller ( 161 ) coupled to the temperature sensor network ( 180 ) and configured to inject the distinct time-varying signals into the temperature sensor network ( 180 ), receive the attenuated distinct time-varying signals in response to the injection, with the attenuated distinct time-varying signals being attenuated by the temperature sensing resistors ( 186, 187 ), and generate two or more substantially simultaneous temperature values from the attenuated distinct time-varying signals.

Claims (62)

1. A multiple temperature sensor system ( 120 ), comprising:

a temperature sensor network ( 180 ) comprising:

a plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ); and

a plurality of frequency-selective filters ( 184 , 185 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ), with the plurality of frequency-selective filters ( 184 , 185 ) passing a plurality of distinct time-varying signals into the temperature sensor network ( 180 ) and passing a plurality of attenuated distinct time-varying signals out of the temperature sensor network ( 180 ); and

a temperature measurement controller ( 161 ) coupled to the temperature sensor network ( 180 ) and configured to generate and inject the plurality of distinct time-varying signals into the temperature sensor network ( 180 ), receive the plurality of attenuated distinct time-varying signals from the temperature sensor network ( 180 ) in response to the injection, with the plurality of attenuated distinct time-varying signals being attenuated by the plurality of temperature sensing resistors ( 186 , 187 ), and generate two or more substantially simultaneous temperature values from the plurality of attenuated distinct time-varying signals.

2. The multiple temperature sensor system ( 120 ) of claim 1 , wherein the multiple temperature sensor system ( 120 ) comprises a component of a Coriolis mass flow meter.

3. The multiple temperature sensor system ( 120 ) of claim 1 , wherein the multiple temperature sensor system ( 120 ) comprises a component of a vibrating densitometer.

4. The multiple temperature sensor system ( 120 ) of claim 1 , with the plurality of frequency-selective filters ( 184 , 185 ) comprising:

a plurality of frequency-selective input filters ( 184 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing the plurality of distinct time-varying signals from the temperature measurement controller ( 161 ) into the temperature sensor network ( 180 ); and

a plurality of frequency-selective output filters ( 185 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing the plurality of attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ).

5. The multiple temperature sensor system ( 120 ) of claim 1 , with the plurality of frequency-selective filters ( 184 , 185 ) comprising:

two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

five frequency-selective output filters ( 185 A- 185 E) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ).

6. The multiple temperature sensor system ( 120 ) of claim 1 , with the plurality of frequency-selective filters ( 184 , 185 ) comprising:

two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

five frequency-selective output filters ( 185 A- 185 E) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ), with the five frequency-selective output filters ( 185 A- 185 E) including two outputs to the temperature measurement controller ( 161 ).

7. The multiple temperature sensor system ( 120 ) of claim 1 , with the plurality of frequency-selective filters ( 184 , 185 ) comprising:

a plurality of frequency-selective input filters ( 184 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing the plurality of distinct time-varying signals from the temperature measurement controller ( 161 ) into the temperature sensor network ( 180 ); and

a multiplexer ( 183 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing the plurality of attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ).

8. The multiple temperature sensor system ( 120 ) of claim 1 , with the plurality of frequency-selective filters ( 184 , 185 ) comprising:

two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

eight frequency-selective output filters ( 185 A- 185 H) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ).

9. The multiple temperature sensor system ( 120 ) of claim 1 , with the plurality of frequency-selective filters ( 184 , 185 ) comprising:

two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

eight frequency-selective output filters ( 185 A- 185 H) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ), with the eight frequency-selective output filters ( 185 A- 185 H) including a single output to the temperature measurement controller ( 161 ).

10. The multiple temperature sensor system ( 120 ) of claim 1 , with the plurality of frequency-selective filters ( 184 , 185 ) comprising:

two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

five frequency-selective output filters ( 185 A- 185 E) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ), with the five frequency-selective output filters ( 185 A- 185 E) including a single output to the temperature measurement controller ( 161 ).

11. A multiple temperature sensor system ( 120 ), comprising:

a temperature sensor network ( 180 ) comprising:

a plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 );

a plurality of frequency-selective input filters ( 184 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing a plurality of distinct time-varying signals into the temperature sensor network ( 180 ); and

a plurality of frequency-selective output filters ( 185 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing a plurality of attenuated distinct time-varying signals out of the temperature sensor network ( 180 ); and

a temperature measurement controller ( 161 ) coupled to the temperature sensor network ( 180 ) and configured to generate and inject the plurality of distinct time-varying signals into the temperature sensor network ( 180 ), receive the plurality of attenuated distinct time-varying signals from the temperature sensor network ( 180 ) in response to the injection, with the plurality of attenuated distinct time-varying signals being attenuated by the plurality of temperature sensing resistors ( 186 , 187 ), and generate two or more substantially simultaneous temperature values from the plurality of attenuated distinct time-varying signals.

12. The multiple temperature sensor system ( 120 ) of claim 11 , wherein the multiple temperature sensor system ( 120 ) comprises a component of a Coriolis mass flow meter.

13. The multiple temperature sensor system ( 120 ) of claim 11 , wherein the multiple temperature sensor system ( 120 ) comprises a component of a vibrating densitometer.

14. The multiple temperature sensor system ( 120 ) of claim 11 , wherein:

the plurality of frequency-selective input filters ( 184 ) comprises two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

the plurality of frequency-selective output filters ( 185 ) comprises five frequency-selective output filters ( 185 A- 185 E) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ).

15. The multiple temperature sensor system ( 120 ) of claim 11 , wherein:

the plurality of frequency-selective input filters ( 184 ) comprises two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

the plurality of frequency-selective output filters ( 185 ) comprises five frequency-selective output filters ( 185 A- 185 E) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ), with the five frequency-selective output filters ( 185 A- 185 E) including two outputs to the temperature measurement controller ( 161 ).

16. The multiple temperature sensor system ( 120 ) of claim 11 , wherein:

the plurality of frequency-selective output filters ( 185 ) comprises a multiplexer ( 183 ) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing the plurality of attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ).

17. The multiple temperature sensor system ( 120 ) of claim 11 , wherein:

the plurality of frequency-selective input filters ( 184 ) comprises two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

the plurality of frequency-selective output filters ( 185 ) comprises eight frequency-selective output filters ( 185 A- 185 H) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ).

18. The multiple temperature sensor system ( 120 ) of claim 11 , wherein:

the plurality of frequency-selective input filters ( 184 ) comprises two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

the plurality of frequency-selective output filters ( 185 ) comprises eight frequency-selective output filters ( 185 A- 185 H) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ), with the eight frequency-selective output filters ( 185 A- 185 H) including a single output to the temperature measurement controller ( 161 ).

19. The multiple temperature sensor system ( 120 ) of claim 11 , wherein:

the plurality of frequency-selective input filters ( 184 ) comprises two frequency-selective input filters ( 184 A, 184 B) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing four time-varying signals from the temperature measurement controller ( 161 ) into corresponding nodes of the temperature sensor network ( 180 ); and

the plurality of frequency-selective output filters ( 185 ) comprises five frequency-selective output filters ( 185 A- 185 E) coupled to the plurality of temperature-sensing resistors R T1 and R T2 ( 186 , 187 ) and passing at least four attenuated distinct time-varying signals from the temperature sensor network ( 180 ) into the temperature measurement controller ( 161 ), with the five frequency-selective output filters ( 185 A- 185 E) including a single output to the temperature measurement controller ( 161 ).

20. A temperature determination method for a multiple temperature sensor system, the method comprising:

generating a plurality of distinct time-varying signals with a temperature measurement controller,

injecting the plurality of distinct time-varying signals into a temperature sensor network including a plurality of temperature-sensing resistors and a plurality of frequency-selective filters, with the plurality of frequency-selective filters comprising:

a plurality of frequency-selective output filters coupled to the plurality of temperature-sensing resistors and passing the plurality of distinct time-varying signals from the temperature measurement controller into the temperature sensor network; and

a plurality of frequency-selective input filters coupled to the plurality of temperature-sensing resistors and passing the plurality of attenuated distinct time-varying signals from the temperature sensor network into the temperature measurement controller;

receiving a plurality of attenuated distinct time-varying signals from the temperature sensor network in response to the injection, with the plurality of attenuated distinct time-varying signals being attenuated by the plurality of temperature sensing resistors; and

generating two or more substantially simultaneous temperature values from the plurality of attenuated distinct time-varying signals.

21. The method of claim 20 , wherein the multiple temperature sensor system comprises a component of a Coriolis mass flow meter.

22. The method of claim 20 , wherein the multiple temperature sensor system comprises a component of a vibrating densitometer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 2, 2013
From: HAYS, PAUL J; MCANALLY, CRAIG B; KRAVITZ, ANDREW S
To: MICRO MOTION, INC.
Reel/Frame 030337/0215 →
Continuity (1)
Related Publication 20130223480A1 · Aug 29, 2013