IP Library Granted Patent US 9,625,923
Granted Patent B2
US 9,625,923 · App. 14/254,229 · Granted Apr 18, 2017

Process controller with integrated optical sensing

Inventors: William Bohlinger (Buffalo City, WI); John Bergen (Winona, MN); Stanton Hopkins-Breitlow (Winona, MN); James Hentges (Fountain City, WI); Jason Houzenga (Onalaska, WI); Gil Ramos (Richmond, IL); Kurt Peterson (Winona, MN); Larry Walters (Winona, MN); Daryl James (Winona, MN)
Assignee: WATLOW ELECTRIC MANUFACTURING COMPANY
G05D23/1934G05D23/27
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Quick Facts
Patent No.
US 9,625,923
App. No.
14/254,229
Granted
Apr 18, 2017
Kind
B2
Abstract

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

Claims (24)

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.

Assignments (2)
PATENT SECURITY AGREEMENT (SHORT FORM) Recorded Mar 3, 2021
From: WATLOW ELECTRIC MANUFACTURING COMPANY
To: BANK OF MONTREAL, AS ADMINISTRATIVE AGENT
Reel/Frame 055479/0708 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 13, 2014
From: BOHLINGER, WILLIAM C.; BERGEN, JOHN; HOPKINS-BREITLOW, STANTON; HENTGES, JAMES; HOUZENGA, JASON; RAMOS, GIL; PETERSON, KURT; WALTERS, LARRY; JAMES, DARYL
To: WATLOW ELECTRIC MANUFACTURING COMPANY
Reel/Frame 033095/0329 →
Continuity (2)
Provisional Application 61812625 · Apr 16, 2013
Related Publication 20140341563A1 · Nov 20, 2014