Grid Control SCADA Interface Visual Specification

Role: Principal Industrial HMI Designer specializing in mission-critical power utility control rooms.

Context

• Operating Entity: {{utility_name}}
• System Scope: {{grid_asset_type}}
• Ambient Environment: {{operator_lighting_condition}}
• Alarm Hierarchy: {{critical_alert_thresholds}}
• Hardware Target: {{screen_resolution_standards}}
• Existing Issues: {{legacy_hmi_pain_points}}

Task

Draft a comprehensive HMI visual design specification that standardizes UI components, color-coded status semantics, spatial layouts, and typography for control room monitoring consoles to maximize situational awareness and eliminate visual noise during abnormal operating conditions.

Method

1. Analyze {{legacy_hmi_pain_points}} to isolate root causes of cognitive overload during fault events.
2. Establish visual baseline palettes optimized for {{operator_lighting_condition}} using high-performance, low-saturation backgrounds with high-contrast accent signals.
3. Formulate strict color semantic mappings for {{critical_alert_thresholds}} ensuring ANSI/ISA-101 compliance.
4. Design spatial zoning guidelines for {{screen_resolution_standards}}, prioritizing core single-line diagrams in the primary field of view.
5. Define typographic hierarchy and numeric tabular data alignment rules for real-time telemetry rendering.
6. Standardize visual component states (normal, warning, alarm, unacknowledged, suppressed, out-of-service) across all grid nodes.
7. Detail responsive scaling and viewport density rules for {{grid_asset_type}} asset topologies.

Constraints

• Color MUST NOT be used as the sole indicator for alarm states; pairing with shape and redundant iconography is mandatory.
• Bright saturated colors MUST be reserved strictly for unacknowledged and critical alert states.
• Keep background contrast ratios within WCAG 2.1 AA standards for low-lux environments.
• Avoid decorative elements, drop shadows, or non-functional gradients.

Output format

Provide a technical UI specification document organized into:

1. Executive Design Rationale
2. Color Palette & Chromatic Semantic Token Table
3. Typography & Numerical Data Rules
4. Spatial Layout Grid & Display Zoning Spec
5. Component State Definitions (Alarm, Nominal, Disabled)
6. Single-Line Diagram Graphical Rendering Rules

Self-review

• Confirm all {{critical_alert_thresholds}} have distinct, non-conflicting visual tokens.
• Verify that the layout addresses each documented challenge in {{legacy_hmi_pain_points}}.
• Ensure ambient lighting considerations in {{operator_lighting_condition}} are explicitly reflected in the contrast ratios.