Abstract
An HMI, or Human-Machine Interface, is a software allowing users to communicate with a machine or automation system. It usually serves as a display section in SCADA (Supervisory Control and Data Acquisition) system for device monitoring and control. In this papper, a 3D Web-based HMI with WebGL (Web-based Graphics Library) rendering performance is presented. The main purpose of this work is to attempt to reduce the limitations of traditional 3D web HMI using the advantage of WebGL. To evaluate the performance, frame rate and frame time metrics were used. The results showed 3D Web-based HMI can maintain the frame rate 60FPS for #cube=0.5K/0.8K, 30FPS for #cube=1.1K/1.6K when it was run on Internet Explorer and Chrome respectively. Moreover, the study found that 3D Web-based HMI using WebGL contains similar frame time in each frame even though the numbers of cubes are up to 5K. This indicated stuttering incurred less in the proposed 3D Web-based HMI compared to the chosen commercial HMI product.
Highlights
A Supervisory Control and Data Acquisition (SCADA) system is commonly used in the factory or building automation fields
This paper studied on the performance of 3D Webbased Human-Machine Interface (HMI) with WebGL Rendering in order to serve large 3D HMIs
The proposed HMI incorporated WebGL technology, a 3D graphics library commonly used in games and entertainment applications
Summary
A Supervisory Control and Data Acquisition (SCADA) system is commonly used in the factory or building automation fields. A Human-Machine Interface (HMI) plays the essential role in a SCADA system. It presents data from sensors to a human operator, and accepts input from the operator to send commands to control devices. The vendors of SCADA system provide proprietary HMI software as a part of their software product. Along with the growth of web technology, the modern rendering technology especially, 3D graphics and the need of real-time communication can be utilized in order to exhibit production line in action [1], a 3D web-based SCADA HMI should gain popularity. Rendering performance of 3D Web-based HMI is compared to a standard web HMI product to find out how 3D Web-based HMI can achieve a rendering performance when compared with a commercial product
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