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基于AVR的防褥瘡氣墊控制器設(shè)計(jì)

Design of anti bedsore cushion controller based on AVR MCU

作者: 周平  單純玉 
單位:上海理工大學(xué)醫(yī)療器械與食品學(xué)院(上海200093)
關(guān)鍵詞: 防褥瘡氣墊;嵌入式系統(tǒng);微控制器;壓力傳感器 
分類號:
出版年·卷·期(頁碼):2012·31·6(616-619)
摘要:

目的 針對防褥瘡氣墊工作模式單一、故障報(bào)警措施缺乏、操作界面呆板等不足,本文提出基于AVR單
片機(jī)的防褥瘡氣墊微控制器設(shè)計(jì)方案。方法 該微控制器以Atmega16為核心,外設(shè)電路包括壓力傳感器、
氣壓檢測電路、液晶顯示電路、氣泵驅(qū)動電路等,可根據(jù)體重、周期、工作時間參數(shù)設(shè)置不同,控制氣泵
使氣墊產(chǎn)生幅度、周期、時間可調(diào)的波動式翻滾達(dá)到防治褥瘡的作用。連接氣泵對氣墊充氣測試,設(shè)置不
同的工作參數(shù),觀察并比較測試結(jié)果。結(jié)果 控制器運(yùn)行穩(wěn)定,可使氣墊產(chǎn)生規(guī)律的波動式翻滾,符合防
治褥瘡的要求。結(jié)論 基于該微控制器的防褥瘡氣墊操作界面友好,工作模式多樣,并且工作安全可靠,
成本低廉。

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.

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