關(guān)鍵詞: 嵌入式 ARM Toradex
摘要:3G3EV-A2004M-CUE嵌入式系統(tǒng)設(shè)備的主要特點(diǎn)是高可靠性,形態(tài)多樣,使用環(huán)境復(fù)雜,因此對(duì)于核心控制部件的方案選取就需要結(jié)合實(shí)際應(yīng)用充分考慮其物理可靠性。ARM和X86平臺(tái)相比具備天然的低功耗特性,可以采用無散熱或被動(dòng)散熱方案,同時(shí)支持WinCE等嵌入式操作系統(tǒng),使得可靠性方面會(huì)大大提高,因此本文著重討論基于ARM的嵌入式系統(tǒng);同時(shí),隨著ARM芯片和嵌入式設(shè)備的發(fā)展,其設(shè)計(jì)復(fù)雜度和工藝難度也越來越高,采用核心模塊化設(shè)計(jì)則可以簡(jiǎn)化設(shè)計(jì)和生產(chǎn)難度,從國(guó)外儀表,汽車等眾多嵌入式領(lǐng)域應(yīng)用發(fā)展來看,模塊化設(shè)計(jì)都逐漸被廣泛采用,那么究竟采用ARM核心模塊能否導(dǎo)致系統(tǒng)可靠性下降呢?下面就從接口形態(tài),固定方式和具體測(cè)試實(shí)例等幾方面做一個(gè)分析。
嵌入式系統(tǒng)采用ARM計(jì)算機(jī)模塊方案其物理接口可靠性分析
By Toradex 秦海
3G3EV-A2004M-CUE嵌入式系統(tǒng)設(shè)備的主要特點(diǎn)是高可靠性,形態(tài)多樣,使用環(huán)境復(fù)雜,因此對(duì)于核心控制部件的方案選取就需要結(jié)合實(shí)際應(yīng)用充分考慮其物理可靠性。ARM和X86平臺(tái)相比具備天然的低功耗特性,可以采用無散熱或被動(dòng)散熱方案,同時(shí)支持WinCE等嵌入式操作系統(tǒng),使得可靠性方面會(huì)大大提高,因此本文著重討論基于ARM的嵌入式系統(tǒng);同時(shí),隨著ARM芯片和嵌入式設(shè)備的發(fā)展,其設(shè)計(jì)復(fù)雜度和工藝難度也越來越高,采用核心模塊化設(shè)計(jì)則可以簡(jiǎn)化設(shè)計(jì)和生產(chǎn)難度,從國(guó)外儀表,汽車等眾多嵌入式領(lǐng)域應(yīng)用發(fā)展來看,模塊化設(shè)計(jì)都逐漸被廣泛采用,那么究竟采用ARM核心模塊能否導(dǎo)致系統(tǒng)可靠性下降呢?下面就從接口形態(tài),固定方式和具體測(cè)試實(shí)例等幾方面做一個(gè)分析。
1.計(jì)算機(jī)模塊和載板的接口形式
./ 3G3EV-A2004M-CUE板到板插針連接 – 如經(jīng)典的PC104計(jì)算機(jī)模塊所采用的連接方式,優(yōu)點(diǎn)是插接穩(wěn)固,成本低廉;缺點(diǎn)是尺寸較大,反復(fù)插拔易損壞,且不適合高速總線傳輸。
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