Patent · US Active

Using soft-sensors in a programmable logic controller

US10739746B2 · kind B2 · utility

58Cited by

3References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Juan L. Aparicio Ojea · Doylestown, US
George Lo · Plainsboro, US
Justinian Rosca · Monmouth Junction, US
Lingyun Wang · Mianyang, CN

Key dates

Filing date	Oct 30, 2014
Grant date	Aug 11, 2020
Priority date	—
Expiry date	Aug 4, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/37537
WIPO fieldControl
WIPO sectorInstruments

Abstract

A method of operating an intelligent programmable logic controller over a plurality of scan cycles includes the intelligent programmable logic controller selecting one or more soft-sensors available in a control program corresponding to a production unit, each soft-sensor comprising a local parameter or variable used by the control program. The intelligent programmable logic controller determines updated soft-sensor values corresponding to the one or more soft-sensors during each scan cycle and stores those values during each scan cycle on a non-volatile computer-readable storage medium operably coupled to the intelligent programmable logic controller. Additionally, the intelligent programmable logic controller annotates the updated soft-sensor values with automation system context information to generate contextualized data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.