一站式方案
<code id="xmx1a"><ol id="xmx1a"></ol></code>
  • <pre id="xmx1a"></pre>
    <pre id="xmx1a"><label id="xmx1a"></label></pre>
  • <table id="xmx1a"><noscript id="xmx1a"></noscript></table>

    Minimizing Power Consumption of iMEMS? Accelerometers

    2015-08-26 11:50:00
    liaoziming
    原創
    1981
    摘要:Minimizing Power Consumption of iMEMS? Accelerometers
    Basic Methods
    There are three basic methods to reduce power
    consumption:
    ? Lower the supply voltage
    ? Turn off the accelerometer when measurements are
    not taking place
    ? Use clever software
    All of the techniques outlined in this application note are

    no more than extensions of these methods

    ? Lower the supply voltage
    ? Turn off the accelerometer when measurements are
    not taking place
    ? Use clever software
    All of the techniques outlined in this application note are
    no more than extensions of these methods

    ? Lower the supply voltage
    ? Turn off the accelerometer when measurements are
    not taking place
    ? Use clever software
    All of the techniques outlined in this application note are
    no more than extensions of these methods
    In iMEMS accelerometers, the turn-on time is mainly a
    function of the bandwidth. While higher bandwidths will
    allow lower power operation (due to faster power
    cycling rates), doing so generally results in more noise.
    Many systems include an antialiasing filter between the
    accelerometer and the A/D converter. The time constant
    of this antialiasing filter must also be considered when
    power cycling.
    Table I shows the approximate turn-on time (including
    the internal low-pass filter) for several accelerometers.
    Faster turn-on times allow the user to very quickly turn
    on the accelerometer, measure the acceleration, and
    then turn off the accelerometer.
    where CX is in F. The 0.3 s is the turn-on time of the
    accelerometer itself, while the 160  CX (or CY) term is
    the settling time of the bandwidth limiting filter. Using a
    0.0022 F capacitor, the turn-on time to steady state is
    approximately 650 s. The analog outputs and an A/D
    converter will be used, so a conversion time of 25 s
    must be added. So the total ontime is 675 s.

    發表評論
    評論通過審核之后才會顯示。
    文章分類
    聯系我們
    聯系人: 廖小姐
    電話: 010-57308810
    傳真: 010-57308810
    Email: info@www.slysjy.com
    網址: www.www.slysjy.com
    地址: 北京市通州區翠景北里21號
    亚洲啪啪
    <code id="xmx1a"><ol id="xmx1a"></ol></code>
  • <pre id="xmx1a"></pre>
    <pre id="xmx1a"><label id="xmx1a"></label></pre>
  • <table id="xmx1a"><noscript id="xmx1a"></noscript></table>