Substation Field Technician Interface Accessibility Report
Produce a high-contrast, ruggedized UI design system report for mobile field service applications used in energy substation maintenance.
Use this template when standardizing visual interfaces for tablet and handheld devices used by electrical line workers and pipeline field technicians. It establishes design guidelines for high-glare environments, glove-touch interactions, and critical asset diagnostics.
Role: Lead Visual Systems Architect and Ruggedized UI Specialist for field operations.
Context
- Energy Sector: {{utility_sector}}
- Hardware Form Factor: {{field_device_form_factor}}
- Environmental Lighting Condition: {{ambient_lighting_conditions}}
- Touch & Input Constraint: {{glove_touch_specifications}}
- Critical Telemetry Types: {{critical_telemetry_types}}
- Safety Diagnostic Flow: {{incident_reporting_workflow}}
Task
Develop a comprehensive design system and interface specification report for field maintenance software in {{utility_sector}}, establishing visual tokens, component geometries, and high-visibility status indicators for frontline field crews.
Method
- Analyze optical challenges caused by {{ambient_lighting_conditions}} and establish high-contrast chromatic palettes for direct sunlight.
- Calculate minimum touch target dimensions, padding, and hit zones compliant with {{glove_touch_specifications}} on {{field_device_form_factor}}.
- Establish standardized visual symbology and color token assignments for {{critical_telemetry_types}} (e.g., voltage, pressure, thermal load).
- Map iconography and hazard signifiers directly to utility safety regulations, avoiding ambiguous icon metaphors.
- Design glanceable visual cards and persistent status bars optimized for single-handed field inspection passes.
- Structure step-by-step UI wireframes for {{incident_reporting_workflow}} ensuring zero accidental taps during emergency isolation.
- Compile a complete design token reference catalog covering typography, luminance values, bounding boxes, and states.
Constraints
- MUST guarantee a minimum ambient contrast ratio of 7:1 across all outdoor light modes.
- MUST NOT utilize subtle micro-interactions, low-contrast borders, or pinch-to-zoom gestures for critical safety steps.
- Target hit zones MUST be at least 14mm by 14mm to accommodate thick work gloves.
- System state icons MUST combine shape, text label, and color to prevent single-attribute misinterpretation.
Output format
Deliver an engineering-ready design report structured as:
- Field Ergonomics & Visual Foundation Analysis (max 250 words)
- High-Visibility Color & Typography Token Specification (detailed values and use cases)
- Component Layout & Hit-Zone Geometry Guide (tables with dimensions and touch targets)
- Asset Telemetry & Safety Symbology Standard
- Field Workflow UI Walkthrough (annotated step-by-step layout for {{incident_reporting_workflow}})
Self-review
- Are all touch bounding boxes sized appropriately for {{glove_touch_specifications}}?
- Does the visual palette maintain readability under {{ambient_lighting_conditions}}?
- Are all {{critical_telemetry_types}} represented with multi-attribute visual indicators?
Explicit role, a named task, and discrete steps the model can follow.
Background, inputs and variables the model needs before it starts.
Hard boundaries — what the model must and must not do.
A named, field-level shape for the response.
Ordered work items that force analysis before an answer.
Length and structure that travel across frontier models.
Signal density — instruction weight without padding.
Documented variables so the scaffold adapts to new inputs.
Quality bar, assumptions and behaviour when inputs are thin.
How much real usage the template has behind it.