Process controller with integrated optical sensing

Patent metadata

Field	Value
Publication number	US-9625923-B2
Application number	US-201414254229-A
Country	US
Kind code	B2
Filing date	Apr 16, 2014
Priority date	Apr 16, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

The present disclosure relates generally to a process controller and more specifically to a process controller with integrated optical sensing.

First claim

What is claimed is:

1. A system for process control, the system comprising:
a process controller comprising:
a plurality of process inputs;
a plurality of communication ports;
at least one optical sensor integrated in the process controller, wherein data of the optical sensor is resident within the process controller; and
a control unit in communication with the plurality of communication ports and the at least one optical sensor,

wherein the at least one optical sensor includes an optical source that emits light toward an object, and the control unit of the process controller interprets a return light profile reflected by the object to determine a temperature of the object, and controls a controlled device through the plurality of communication ports accordingly.

2. The system according to claim 1 , wherein the controller comprises at least one module configured to measure an optical signal from the at least one optical sensor.

3. The system according to claim 2 , wherein the optical signal is used to calculate a control signal to control a device.

4. The system according to claim 1 , further comprising an optical temperature probe.

5. The system according to claim 4 , wherein the at least one optical sensor is configured to measure a temperature signal from the optical temperature probe.

6. The system according to claim 5 , wherein the temperature signal is interpreted by the controller to determine an error from a control calculation and to output a control signal to a thermal device corresponding to the error calculated.

7. The system according to claim 4 , wherein the at least one optical sensor is configured to measure a signal from an optical probe, wherein the signal is selected from the group consisting of pressure, strain, gas concentrations, and corrosion.

8. The system according to claim 7 , wherein the signal is interpreted by the controller to determine an error from a control calculation and to output a control signal to a device corresponding to the error calculated.

9. An integrated process control device comprising:
a controller;
a plurality of communication ports; and
a plurality of optical sensors,
wherein the plurality of communication ports and the optical sensors are in communication with the controller, wherein the controller is configured to receive a first optical signal and a second optical signal from the plurality of optical sensors and transmit at least one control signal to a controlled device corresponding to the first optical signal or the second optical signal,
wherein the plurality of optical sensors each include an optical source that emits light toward an object, and the controller interprets a return light profile reflected by the object to determine a temperature of the object, and controls the controlled device through the plurality of communication ports accordingly.

10. The device according to claim 9 , wherein the controlled device is a thermal device.

11. The device according to claim 9 , wherein the plurality of optical sensors are optical temperature sensors.

12. The device according to claim 9 , wherein the plurality of optical sensors are selected from the group consisting of pressure, strain, gas concentration, and corrosion.

13. The device according to claim 9 , wherein the plurality of optical sensors are in communications with independent zones in an environment.

Assignees

• Watlow Electric Mfg

Inventors

• Bohlinger William
• Bergen John
• Hopkins-Breitlow Stanton
• Hentges James
• Houzenga Jason
• Ramos Gil
• Peterson Kurt
• Walters Larry
• James Daryl

Classifications

• G05D23/27 Primary

  with sensing element responsive to radiation · CPC title

• G05D23/1934 Primary

  each space being provided with one sensor acting on one or more control means · CPC title

• G05D23/1931 Primary

  to control the temperature of one space · CPC title