Objective The anti bedsore cushions have certain disadvantages such as simple
work mode,unfriendly user interface,lack of fault alarm measurement. This paper presents a
microcontroller of anti bedsore cushion based on AVR MCU.Methods The microcontroller
consists of Atemega16 as the core and peripheral circuits including pressure sensor,air
pressure detection circuit,LCD display circuit,air pump drive circuit and other circuits.
The microcontroller controls the air pump to make the air cushion produce adjustable
fluctuations following the input parameters such as weight,period,work time. We connect an
air pump to inflate the air cushion under different work parameters for test.Results The
test results show that the microcontroller works steadily and makes air cushion produce
regular fluctuations that could prevent bedsores.Conclusions The user interface of the anti
bedsore cushion with the microcontroller is friendly,the work mode is various and steady,
and the cost is low.
|