Control Unit for Dynamic Therapy Mattress
The Dynamic Therapy Mattress is used in Hospital environments to prevent patients developing bed sores. The pressure is raised and lowered alternately in three banks of cells so that no area of skin is permanently in contact with the bed.
The Control unit allows the pressure to be selected and maintained for the three cell banks of the Mattress. The speed of change is also selectable. A Microcontroller was used to read the pressures, operate a stepper motor valve unit, monitor buttons, activate indicators and monitor and record faults.