Medical Pneumatic Compression Controller
A high-reliability dual-channel medical controller developed for pneumatic compression therapy systems used to reduce bleeding, prevent bruising, and improve blood circulation. The system independently controls two pressure channels using closed-loop PID regulation, ensuring accurate pressure delivery with seamless backup power and advanced fault detection for critical medical applications.
Project Overview
This project involved the complete design, development, and manufacturing of an industrial-grade medical controller for a dual-channel pneumatic compression device.
The controller independently manages two air channels (Channel A & Channel B), each capable of inflation and deflation using dedicated solenoid valves while continuously monitoring pressure through high-precision analog sensors.
A powerful STM32-based control system executes real-time PID algorithms to regulate pump speed using PWM, maintaining the desired therapeutic pressure with high accuracy.
The system includes a 7-inch HMI touchscreen that allows clinicians to configure treatment parameters, monitor live pressure, adjust therapy duration, calibrate sensors, and diagnose system faults in real time.
To maximize reliability in medical environments, the controller incorporates an uninterrupted backup battery system with zero switching delay, allowing continuous operation even during power outages.
Client Requirements
- Independent control of two pneumatic therapy channels.
- Accurate pressure regulation using closed-loop control.
- Automatic inflate and deflate cycles.
- Industrial-grade medical reliability.
- Continuous operation during power failure.
- Touchscreen user interface.
- Real-time pressure monitoring.
- Pump speed regulation using PWM.
- Automatic fault detection.
- Sensor calibration interface.
- Reliable long-term operation for medical environments.
Our Solution
Metanoia designed and manufactured a complete embedded medical control platform including:
- Custom STM32 control board.
- Dual-channel pneumatic control architecture.
- PID-based pressure regulation.
- PWM-controlled air pump.
- Four independently controlled solenoid valves.
- Two high-accuracy analog pressure sensors.
- 7-inch HMI touchscreen interface.
- Automatic inflate / deflate management.
- Zero-delay battery backup system.
- Automatic charger with seamless power transition.
- Built-in diagnostics for pump, valves, pressure sensors, and power system.
- Factory calibration interface.
- PCB manufacturing, assembly, firmware development, testing, and production.
Key Features
- Dual independent pressure channels
- STM32 embedded controller
- Closed-loop PID control
- PWM pump regulation
- 4 Solenoid valve control
- Dual analog pressure sensing
- Automatic inflate / deflate cycles
- 7″ Industrial HMI
- Live pressure monitoring
- Fault detection & diagnostics
- Sensor calibration
- Zero switching backup battery
- Medical-grade embedded architecture
- Industrial PCB manufacturing
- Production-ready hardware
