# 🦾 WIA Prosthetic Control Standard

> **WIA-AAC-013** | Advanced Prosthetic Control Interface Standard v1.0.0

**홍익인간 (弘益人間)** - Benefit All Humanity

---

## Overview

The WIA Prosthetic Control Standard provides an open, unified specification for myoelectric prosthetic control systems, enabling universal compatibility between control systems and prosthetic devices from different manufacturers.

### Key Features

- **Universal Compatibility** - Interoperable control systems and prosthetic devices
- **Multi-Modal Sensing** - EMG, neural interfaces, hybrid approaches
- **Advanced Algorithms** - Pattern recognition, machine learning, adaptive control
- **Multi-DOF Control** - Simultaneous control of multiple degrees of freedom
- **Sensory Feedback** - Bidirectional communication with haptic/neural feedback
- **Open Standard** - Free to implement, MIT licensed

---

## Quick Stats

| Metric | Value |
|--------|-------|
| Control Channels | 8+ EMG channels |
| Degrees of Freedom | Up to 22 DOF |
| Response Time | <100ms target |
| Accuracy | 95%+ pattern recognition |
| Supported Devices | Universal WIA-compliant |

---

## Directory Structure

```
prosthetic-control/
├── index.html                 # Landing page
├── simulator/
│   └── index.html             # Interactive 5-tab simulator
├── ebook/
│   ├── en/                    # English Ebook (8 chapters)
│   │   ├── index.html
│   │   └── chapter-01~08.html
│   └── ko/                    # Korean Ebook (8 chapters)
│       ├── index.html
│       └── chapter-01~08.html
├── spec/
│   ├── PHASE-1-DATA-FORMAT.md # EMG signal data format
│   ├── PHASE-2-API.md         # Control API specification
│   ├── PHASE-3-PROTOCOL.md    # Communication protocol
│   └── PHASE-4-INTEGRATION.md # System integration guide
└── README.md
```

---

## Four-Phase Architecture

### Phase 1: Data Format
Standardized EMG signal acquisition, digitization, and formatting with support for surface EMG, intramuscular EMG, and neural interfaces.

### Phase 2: API Interface
Comprehensive control API supporting direct control, proportional control, pattern recognition, and regression-based simultaneous control.

### Phase 3: Communication Protocol
Device communication via USB, Bluetooth LE, Wi-Fi, and CAN bus with real-time performance guarantees.

### Phase 4: System Integration
Integration guidelines for complete systems including calibration, sensory feedback, and clinical workflows.

---

## Quick Start

### TypeScript/JavaScript

```typescript
import { ProstheticControl } from '@wia/prosthetic-control';

// Initialize controller
const controller = new ProstheticControl({
  deviceId: 'PROS-2024-001',
  channels: 8,
  sampleRate: 1000
});

// Connect to device
await controller.connect();

// Start EMG monitoring
controller.on('emg', (data) => {
  // Process signals with pattern recognition
  const gesture = controller.recognizePattern(data);

  // Send control command
  controller.setPosition(gesture.position);
  controller.setForce(gesture.force);
});

// Enable sensory feedback
controller.enableFeedback({
  vibrotactile: true,
  forceThreshold: 50
});
```

### Python

```python
from wia_prosthetic import ProstheticControl

# Initialize controller
controller = ProstheticControl(
    device_id='PROS-2024-001',
    channels=8,
    sample_rate=1000
)

# Connect
controller.connect()

# EMG event handler
@controller.on_emg
def handle_emg(data):
    gesture = controller.recognize_pattern(data)
    controller.set_position(gesture.position)
    controller.set_force(gesture.force)

# Enable feedback
controller.enable_feedback(
    vibrotactile=True,
    force_threshold=50
)
```

---

## Technical Specifications

### EMG Signal Processing
- **Sampling Rate**: 1000 Hz minimum (2000 Hz recommended)
- **Resolution**: 12-bit minimum (16-bit recommended)
- **Channels**: 4-16 simultaneous EMG channels
- **Filtering**: Bandpass 10-500 Hz, notch 50/60 Hz
- **Features**: Time-domain, frequency-domain, time-frequency

### Control Algorithms
- **Direct Control**: Threshold-based, <50ms latency
- **Proportional Control**: Continuous force/speed modulation
- **Pattern Recognition**: LDA, SVM, Random Forest, Neural Networks
- **Accuracy**: 90%+ for 8 gestures, 85%+ for 12 gestures

### Multi-DOF Systems
- **Supported DOF**: 1-22 degrees of freedom
- **Control Modes**: Sequential, simultaneous, shared autonomy
- **Grasp Patterns**: Cylindrical, precision, lateral, spherical, hook, etc.

### Sensory Feedback
- **Modalities**: Vibrotactile, electrotactile, TENS, neural stimulation
- **Channels**: 4-16 feedback channels
- **Latency**: <50ms sensor-to-feedback
- **Encoding**: Amplitude, frequency, spatial, temporal patterns

---

## Supported Applications

| Application | Control Type | DOF | Typical Users |
|-------------|--------------|-----|---------------|
| Basic Hand | Direct/Proportional | 1-2 | Entry-level users |
| Multi-Grip Hand | Pattern Recognition | 3-5 | Intermediate users |
| Dexterous Hand | Advanced PR | 6-12 | Advanced users, TMR |
| Full Arm System | Simultaneous Control | 10-22 | High-level amputees |
| Research Platform | Custom Algorithms | Unlimited | Researchers |

---

## Neural Interface Support

### Targeted Muscle Reinnervation (TMR)
- 4-8 additional control sites
- Intuitive motor mapping
- Enhanced pattern recognition accuracy (95-98%)

### Regenerative Peripheral Nerve Interfaces (RPNI)
- 6-10 control sites
- Reduced neuroma pain
- Long-term signal stability

### Implanted Interfaces
- Cuff electrodes for nerve recording
- Intraneural electrodes for high selectivity
- Bidirectional sensory stimulation

---

## Certification

| Level | Description | Requirements | Cost |
|-------|-------------|--------------|------|
| Level 1: Compliant | Basic interoperability | Minimum API support | $500 |
| Level 2: Certified | Commercial products | Full compliance + testing | $2,000 |
| Level 3: Certified Plus | Medical/professional | Extended features + clinical validation | $5,000 |

Visit [cert.wiastandards.com](https://cert.wiastandards.com) to start certification.

---

## Resources

- **Landing Page**: [prosthetic-control.wiastandards.com](https://prosthetic-control.wiastandards.com)
- **Interactive Simulator**: [prosthetic-control.wiastandards.com/simulator](https://prosthetic-control.wiastandards.com/simulator)
- **Complete Ebook**: [wiabook.com/prosthetic-control](https://wiabook.com/prosthetic-control)
- **Technical Specs**: [spec/](./spec/)
- **GitHub**: [github.com/WIA-Official/wia-standards/tree/main/prosthetic-control](https://github.com/WIA-Official/wia-standards/tree/main/prosthetic-control)

---

## Related Standards

- **WIA-AAC-001** - AAC (Augmentative and Alternative Communication)
- **WIA-AAC-009** - BCI (Brain-Computer Interface)
- **WIA-AAC-010** - Braille Display
- **WIA-AAC-011** - Sign Language Recognition

---

## Implementation Examples

### Academic Research
- Over 50 research groups worldwide use WIA standard for prosthetic control research
- Enables reproducible results and cross-lab collaboration
- Standardized datasets and benchmarks available

### Clinical Deployment
- Multiple prosthetic clinics implementing WIA-compliant systems
- Improved patient outcomes through device interoperability
- Reduced training time with standardized interfaces

### Commercial Products
- Growing ecosystem of WIA-certified devices and control systems
- Users can mix-and-match components based on needs and budget
- Competitive marketplace driving innovation and cost reduction

---

## Contributing

The WIA Prosthetic Control Standard is community-driven and welcomes contributions:

### How to Contribute
1. Fork the repository
2. Create a feature branch (`git checkout -b feature/improvement`)
3. Commit your changes (`git commit -m 'Add improvement'`)
4. Push to the branch (`git push origin feature/improvement`)
5. Open a Pull Request

### Contribution Areas
- Algorithm implementations
- Hardware drivers
- Documentation improvements
- Translation to other languages
- Example applications
- Test suites and benchmarks

---

## Development Roadmap

### Version 1.1 (Q2 2025)
- Enhanced sensory feedback specifications
- Improved adaptive learning algorithms
- Extended neural interface support

### Version 1.2 (Q4 2025)
- Computer vision integration
- Autonomous grasping features
- Cloud-based calibration services

### Version 2.0 (2026)
- Direct cortical interface support
- AI-driven shared autonomy
- Advanced soft robotics specifications

---

## Support and Community

### Getting Help
- **Documentation**: Complete ebook and API reference
- **Forums**: [community.wiastandards.com](https://community.wiastandards.com)
- **Email**: prosthetic-control@wia.family
- **GitHub Issues**: Report bugs and request features

### Community Resources
- Monthly virtual meetups
- Annual WIA Prosthetic Control Conference
- Developer mailing list
- Slack workspace for real-time discussion

---

## License

MIT License - Free to use, modify, and distribute.

```
Copyright (c) 2025 World Certification Industry Association (WIA)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
```

---

## Citation

If you use the WIA Prosthetic Control Standard in your research, please cite:

```bibtex
@techreport{wia2025prosthetic,
  title={WIA Prosthetic Control Standard: Open Standard for Myoelectric Prosthetic Control},
  author={{WIA Technical Committee}},
  year={2025},
  institution={World Certification Industry Association},
  type={Technical Standard},
  number={WIA-AAC-013 v1.0.0},
  url={https://wiastandards.com/prosthetic-control}
}
```

---

## Contact

**World Certification Industry Association (WIA)**
SmileStory Inc.

- Website: [wiastandards.com](https://wiastandards.com)
- Email: contact@wia.family
- GitHub: [github.com/WIA-Official](https://github.com/WIA-Official)
- Twitter: [@WIAStandards](https://twitter.com/WIAStandards)

---

**홍익인간 (弘益人間) (홍익인간) - 널리 인간을 이롭게 하라**

*Advanced prosthetic control for everyone, everywhere.*

© 2025 WIA - MIT License