Measuring transducer having two transmission channels

Patent metadata

Field	Value
Publication number	US-9506810-B2
Application number	US-201113805316-A
Country	US
Kind code	B2
Filing date	Jun 17, 2011
Priority date	Jun 18, 2010
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

The inventions herein include a measuring transducer, having a first transmission channel which conditions an analogue measurement input signal in an analogue manner and makes it available as a conditioned measurement signal. In addition, the measuring transducer may have a second transmission channel which conditions the analogue measurement input signal and makes it available as an influencing signal, wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal. In a further embodiment of the inventions herein, a measuring system has a temperature sensor and a measuring transducer according to the present innovations.

First claim

The invention claimed is:

1. A measuring transducer comprising:
a first transmission channel, which conditions an analog measurement input signal (I) in an analog manner and makes it available as a conditioned measurement signal; and
a second transmission channel, which conditions the analog measurement input signal (I) and makes it available as an influencing signal;
wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal (0);and
wherein the first transmission channel and the second transmission channel are arranged in parallel, and both of the first transmission channel and the second transmission channel receive the analog measurement input signal as input.

2. The measuring transducer according to claim 1 , wherein the second transmission channel conditions the analog measurement input signal in a digital manner.

3. The measuring transducer according to claim 1 wherein the first transmission channel has a transformer.

4. The measuring transducer according to claim 1 , wherein the second transmission channel has an analog-digital converter and a digital-analog converter.

5. The measuring transducer according to claim 1 , wherein the second transmission channel has an arithmetic computing unit.

6. The measuring transducer according to claim 1 wherein the first transmission channel has a modulator and a demodulator.

7. The measuring transducer according to claim 1 wherein the second transmission channel has an optoelectronic coupler.

8. The measuring transducer according to claim 1 wherein the influencing signal contributes less than one-half, preferably +/−10 . . . 5%, to the measuring output signal.

9. The measuring transducer according to claim 1 wherein the second transmission signal has a feedback of the measurement output signal (0) to allow comparison of the measurement input signal (I) with the measurement output signal (0).

10. The measuring transducer according to claim 9 wherein the feedback is designed such that it can be disconnected.

11. The measuring transducer according to claim 1 wherein the analog measurement input signal is a temperature measurement input signal.

12. A measuring system having a temperature sensor and a measuring transducer according to claim 1 .

13. A measuring transducer comprising:
a first transmission channel, which conditions an analog measurement input signal (I) in an analog manner and makes it available as a conditioned measurement signal; and
a second transmission channel, which conditions the analog measurement input signal (I) and makes it available as an influencing signal;
wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal (0); and
wherein the first transmission channel has a modulator and a demodulator.

14. A measuring transducer comprising:
a first transmission channel, which conditions an analog measurement input signal (I) in an analog manner and makes it available as a conditioned measurement signal; and
a second transmission channel, which conditions the analog measurement input signal (I) and makes it available as an influencing signal;
wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal (0); and
wherein the second transmission channel has an optoelectronic coupler.

15. A measuring transducer comprising:
a first transmission channel, which conditions an analog measurement input signal (I) in an analog manner and makes it available as a conditioned measurement signal; and
a second transmission channel, which conditions the analog measurement input signal (I) and makes it available as an influencing signal;
wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal (0); and
wherein the influencing signal contributes less than one-half, preferably +/−10 . . . 5%, to the measuring output signal.

16. A measuring transducer comprising:
a first transmission channel, which conditions an analog measurement input signal (I) in an analog manner and makes it available as a conditioned measurement signal; and
a second transmission channel, which conditions the analog measurement input signal (I) and makes it available as an influencing signal;
wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal (0); and
wherein the second transmission signal has a feedback of the measurement output signal (0) to allow comparison of the measurement input signal (I) with the measurement output signal (0).

17. The measuring transducer according to claim 16 , wherein the feedback is designed such that it can be disconnected.

18. The measuring transducer according to claim 16 , wherein the second transmission channel conditions the analog measurement input signal in a digital manner.

19. A measuring transducer comprising:
a first transmission channel, which conditions an analog measurement input signal (I) in an analog manner and makes it available as a conditioned measurement signal; and
a second transmission channel, which conditions the analog measurement input signal (I) and makes it available as an influencing signal;
wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal (0); and
wherein the analog measurement input signal is a temperature measurement input signal.

20. A measuring system, the system comprising:
a temperature sensor; and
a measuring transducer comprising:
a first transmission channel, which conditions an analog measurement input signal (I) in an analog manner and makes it available as a conditioned measurement signal; and
a second transmission channel, which conditions the analog measurement input signal (I) and makes it available as an influencing signal;
wherein the conditioned measurement signal and the influencing signal are combined and made available as a measurement output signal (0).

Assignees

• Meier Heinz W
• Zink Fabian
• Phoenix Contact Gmbh & Co

Inventors

• Meier Heinz W
• Zink Fabian

Classifications

• G01K7/21

  for modifying the output characteristic, e.g. linearising · CPC title

• G01K1/00 Primary

  Details of thermometers not specially adapted for particular types of thermometer (circuits for reducing thermal inertia G01K7/42) · CPC title

• G01D3/022 Primary

  having an ideal characteristic, map or correction data stored in a digital memory · CPC title

• G01K2219/00

  Thermometers with dedicated analog to digital converters · CPC title