HYDRA-CORE v3.1
Industrial HMI & Telemetry System — A high-precision operator control interface designed for heavy industrial hydraulic machinery.
Problem Statement
Heavy hydraulic machinery operators face a unique challenge: they must monitor and control complex systems involving pressure levels, flow rates, temperature thresholds, and emergency alerts — often in harsh factory environments with extreme lighting conditions, vibration, and time pressure.
The existing control interfaces were built with legacy industrial software — dense, text-heavy screens with no visual hierarchy, no ergonomic consideration for touch interaction, and no standardized component library. Operators reported slow response times during critical emergency scenarios, and new hires required weeks of training before becoming proficient.
Research & User Insights
The research phase combined on-site observations, operator interviews, and analysis of existing control workflows. I spent time on the factory floor observing operators during both routine and emergency scenarios.
Key Research Methods
| Method | Participants | Key Finding |
|---|---|---|
| Contextual Inquiry | 8 operators | Operators rely on color and position, not labels, for critical alerts |
| Task Analysis | 12 workflows | Emergency shutdown required 4+ screen transitions |
| Touch Target Study | 6 operators | Gloved hands need minimum 48px touch targets (not 44px mobile standard) |
| Glare Testing | 3 lighting conditions | High-contrast themes with saturated colors outperform muted palettes |
| Interviews | 5 senior operators | Cognitive overload from 20+ simultaneous data points on one screen |
User Persona
Primary Persona: "Kumar" — Senior Hydraulic Operator
12 years of experience. Manages 3 hydraulic press units simultaneously. Wears industrial gloves during operation. Needs to check pressure, temperature, and flow rate every 2-3 minutes. Most critical during emergency pressure spikes where he has <10 seconds to respond. Prefers visual patterns over text. Trains new operators monthly.
Wireframes & Information Architecture
Starting with low-fidelity sketches, I mapped the information hierarchy based on operator priority: emergency alerts at the top, real-time telemetry in the center, and configuration controls at the bottom. The layout follows a Z-pattern matching natural eye movement during monitoring tasks.
Information Architecture — Three-Zone Layout
Layout Principles
- Emergency-first hierarchy: Critical alerts occupy the top-left zone with pulsing color indicators visible from 3+ meters away
- Touch zone optimization: Primary controls sized at 64px minimum (beyond standard 48px) for gloved operation
- Data density management: Progressive disclosure — show summary first, details on tap/hover
- Glare resistance: High-contrast color tokens with minimum 7:1 contrast ratio for critical indicators
- Dark-mode primary: Dark backgrounds reduce glare in factory lighting; light elements pop for quick scanning
- Dense text-based readouts with no visual hierarchy
- Small touch targets (24px) requiring stylus
- 4+ screen transitions for emergency shutdown
- No color coding — all data rendered in monochrome green
- No component reuse — each machine type built from scratch
- Visual hierarchy with color-coded zones and gauges
- 64px touch targets with haptic feedback indicators
- One-tap emergency shutdown from any screen
- Semantic color system: green → amber → red severity scale
- 150+ reusable components across 4 machine types
Design Iterations
The design went through three major iterations, each informed by operator feedback sessions conducted on-site at the manufacturing facility.
Final Design
The final HYDRA-CORE v3.1 interface features a dark-mode-primary design system optimized for industrial display hardware. The color palette uses saturated, high-contrast tones that remain distinguishable under harsh factory lighting and on limited-gamut industrial monitors.
Design System Tokens
| Token | Value | Usage |
|---|---|---|
--alert-critical |
#EF4444 | Emergency stop, pressure overload, temperature critical |
--alert-warning |
#F59E0B | Approaching thresholds, maintenance due |
--status-normal |
#10B981 | All systems operational |
--gauge-primary |
#06B6D4 | Primary gauge fill, active data streams |
--bg-display |
#0A0E17 | Display background (factory glare resistant) |
--touch-target |
64px min | All interactive elements (gloved operation) |
Component Library Highlights
Each component includes 8 state variants (default, hover, active, disabled, loading, error, warning, critical) with auto-layout constraints ensuring consistent spacing across all 4 machine type configurations.
Outcome & Impact
The HYDRA-CORE v3.1 interface was deployed across all 4 hydraulic press units at GEE KAY VEE HYDRAULICS. Operator feedback was overwhelmingly positive — the visual hierarchy and touch-optimized layout reduced emergency response times by 35% in controlled testing. New operator training time dropped from 3 weeks to under 1 week due to the intuitive, consistent interface design.
The 150+ component Figma library became the foundation for all subsequent projects at the company, establishing a scalable design system that engineering could implement directly from design specs.
Key Takeaways
- Constraints drive creativity: Designing for gloved hands, factory glare, and legacy hardware forced better solutions than designing for ideal conditions.
- Color has semantic weight: In safety-critical interfaces, color isn't decoration — it's a communication system with life-or-death consequences.
- Design systems scale: The 150+ component library reduced design time by 60% across 4 machine types and became the company standard.
- Test with real users in real environments: Factory floor testing revealed issues that lab testing never would have caught.