Knowledge-based programmable logic controller with flexible in-field knowledge management and analytics

Abstract

The invention discloses a knowledge-based programmable logic controller with flexible in-field knowledge management and analytics. A method of operating an intelligent programmable logic controller over a plurality of scan cycles includes the intelligent programmable logic controller executing a control program and one or more reasoning algorithms for analyzing data received and transmitted by the intelligent programmable logic controller. The intelligent programmable logic controller receives one or more user-specified declarative knowledge models from an external source via a deployment interface included in the intelligent programmable logic controller. The intelligent programmable logic controller dynamically modifies the reasoning algorithms during runtime of the control program based on the user-specified declarative knowledge models.

Description

technical field [0001] The present invention generally relates to the use of programmable logic controllers for field functions including knowledge management and analysis. The disclosed technology can be applied to various automated production environments, for example using programmable controllers. Background technique [0002] A Programmable Logic Controller (PLC) is a dedicated computer control system configured to execute software that continuously collects data about the state of input devices to control the state of output devices. A PLC typically consists of three main components: a processor (which can include multiple processor cores and volatile memory), volatile memory containing the application program, and one or more input / output (I / O) ports. [0003] PLCs are used in various industrial environments to control automation systems. Automated systems typically generate large amounts of data in their daily operations. This data may include, for example, senso...

AI Technical Summary

Problems solved by technology

The problem with this approach is that in many real-world scenarios, the complete PLC dataset cannot be sent to a remote system for analysis due to limited communication bandwidth

The traditional approach results in high engineering (development and programming) effort and also greatly reduces the OEE (downtime required for updates) of the machine

Adding new sensors and feeding signals to the SCADA level requires complex redesign

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