Web HMI Screen Generation for Legacy SCADA Monitoring

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Solution Overview

Problem

The development of SCADA HMI subsystems for industrial plants is inefficient and costly due to the need for manual creation of HMI screens and programming, and existing network monitoring software cannot handle the unique constraints of industrial plant systems with legacy equipment.

Innovation Solution

A SCADA web HMI system that allows for the creation of system monitoring screens through drag-and-drop operations, generating HMI configuration data for a graphical interface, and includes a server device to execute monitoring processes and transmit display signals to a web browser, supporting legacy equipment constraints and alerting users to anomalies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual creation of HMI screens and programming is used, then system monitoring functions can be implemented, but development cost and time increase significantly

Engineering Contradiction:
Improvesystem monitoring functionVSAvoiddevelopment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by automatically generating HMI screen data and motion programs for monitoring functions before the actual development phase. The HMI server device pre-configures screen data based on network configuration diagrams, eliminating the need for manual programming during implementation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system enables self-service by allowing the HMI server device to automatically create and configure monitoring screens based on network topology information. The system serves itself by generating the necessary HMI configuration data without requiring external manual programming intervention.

Inventive Principle:
Principle #25Self-service

2Reliability

If engineering tools are used to create HMI screens, then monitoring and control functions can be achieved, but development cost increases

Engineering Contradiction:
Improvemonitoring and control functionVSAvoiddevelopment cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The system replaces the mechanical process of manual screen creation and programming with an automated information processing system. The HMI server device automatically generates HMI configuration data from network configuration diagrams, substituting manual engineering work with automated digital processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system uses copying by generating HMI screen data that replicates the network configuration diagram structure. The HMI server device creates digital copies of the network topology as functional monitoring screens, eliminating the need to manually recreate each screen from scratch.

Inventive Principle:
Principle #26Copying

3Reliability

If network monitoring software is used to draw network configuration diagrams, then network monitoring can be achieved, but the design cannot be unified with other HMI screens and legacy equipment constraints cannot be handled

Engineering Contradiction:
Improvenetwork monitoring functionVSAvoiddesign uniformity and legacy equipment compatibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The HMI server device performs multiple functions by both generating HMI configuration data for unified design across all screen types and simultaneously handling constraints for legacy equipment. The system is designed to work with various equipment types while maintaining consistent design standards throughout the industrial plant monitoring system.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS12449787B2SCADA web HMI system
Publication Date: 2025.10.21 TMEIC CORP
  • US12449787B2 patent drawing
  • US12449787B2 patent drawing
  • US12449787B2 patent drawing

AI summary

A drawing creating device generates HMI configuration data for a system monitoring screen from a network configuration diagram drawn by drag-and-drop operation. An HMI server device executes a system monitoring process by applying HMI configuration data to a predetermined server runtime library, and transmits a display signal according to the communication status of a monitored device. An HMI client device draws the system monitoring screen on a web browser and changes the display statuses of the parts positioned on the system monitoring screen according to the received display signal. According to the present invention, the system monitoring function of an industrial plant can be implemented in a non-programmable graphical manner.