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Continuous Positive Airway Pressure (CPAP)

Solution

Continuous Positive Airway Pressure (CPAP) machines deliver therapy for obstructive sleep apnea. Essentially an air pump, a CPAP device continually adjusts its output to the user’s breathing pattern in order to maintain a constant pressure. To meet system objectives, CPAP designers use various types of motors, all of which can be controlled by Microchip’s PIC® microcontrollers with flexible integrated motor control peripherals.

Microchip’s options for components in CPAP machines include:

  • dsPIC® Digital Signal Controller (DSC) with Digital Signal Processing (DSP) and motor control
  • Signal conditioning and amplification chips
  • Temperature sensors
  • Touch and gesture sensing
CPAP diagram

Microchip has what CPAP designers need:

  • dsPIC® digital signal controllers with integrated peripherals to implement numerous motor control strategies, including sensorless Brushless Direct Current (BLDC) control
  • A portfolio of free and low-cost code examples, software libraries and development tools to reduce motor control system design, time and risk
  • High-accuracy temperature sensors to maintain comfortable delivered air temperature
  • Low-offset, low-noise op amps to amplify and condition signals from temperature and pressure sensors before analog-to-digital conversion
  • Hardware and software solutions for touch, proximity and free-space gesture-based control of systems that are easy to use in the dark

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