嵌入式系统25.ppt

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IQ夠安全!TOYOTA開發後窗SRS防護氣簾
– 原理與現行所有氣囊的充氣方式完全相同,透過裝置於車頂 的氣囊爆發裝置,於車輛被後方來車追撞時,迅速向下方充 氣,將後車窗空間完全以氣囊填滿,除了可讓後座乘客頭部 免受撞擊之外,也可避免車窗玻璃碎裂,傷及後座乘客。
全球車電標準 標檢局引領產業掌握
2009年CHRYSLER新車讓你無線 上網
Tightly-constrained
– Low cost, low power, small, fast, etc.
Reactive and real-time
– Continually reacts to changes in the system’s environment
– Must compute certain results in real-time without delay
Major Components in Embedded Systems
Data acquisition and processing Communication System logic and control algorithm Interface Auxiliary units
– display – storage – monitoring and protection – test and diagnosis
Embedded Systems 嵌入式系統
Introduction 簡介
Computing systems
Computing systems are everywhere Most of us think of “desktop” computers
– PC’s – Laptops – Mainframes – Servers
பைடு நூலகம்
Hard to define.
Computers are in here...
and here...
– Nearly any computing system
other than a computer
and even here...
Perhaps 50%, per household
and per automobile
DVD
(from LSI Logic Web page)
數位相機
(from LSI Logic Web page)
Dryer
(from Siemens Web page)
Embedded Systems
垂直整合水平分工垂直整合
Phone Breakthrough
Internet Device iPhone in
Enterprise Maps with GPS App Store
Home Appliances
Philips DVD player Philips TiVo Recorder
東元滾筒式洗衣機 ( WD1258HW )
Roomba Scheduler4230 機器人吸塵器
Game
Sony Playstation 2
PSP (PlayStationPortable)
Sony PS 3
NDS
XBOX 360
任天堂Wii
Automobile
GARMIN nuvi 660 車用衛星導航
Automobile
Automobile - BLIS
Automobile
歐洲GM展示全新Car-to-Car車輛溝通系統
– 主要是透過GPS衛星定位系統、WLAN無線上網等科技,讓 行車安全能夠進一步提升。並且透過警示燈光、警示聲響或 是讓座椅振動,達到提醒駕駛注意來車的目的。
FORD發表CWBS碰撞警示暨煞車輔助系統
– 藉由車上的攝影機與偵測雷達,幫助駕駛保持與前車的安全 距離,若距離過近,系統會發出紅色閃光與聲響,並且主動 煞車,以避免發生危險。CWBS另外包含一個十字路口交通 警報系統,同樣是透過雷達來探測方圓65英尺內是否有移動 汽機車或行人通過。
Lots more of these, though they cost a lot
less each.
Embedded Systems
Computers masquerading as non-computers
– Personal Appliances – Home Appliances – Games – Automobile – ……………
But there’s another type of computing system
– Far more common...
Embedded computing systems
Embedded computing systems
Computing systems embedded
within electronic devices
嵌入式產品-技術的成熟度
Personal Appliances
Canon EOS 400D 數位單眼相機
Apple iPod shuffle 1GB MP3
Dopod P800W 頂級照 相GPS導航PDA手機
Casio Camera Watch
Apple iPhone
Widescreen iPod Revolutionary
2008年10大3C 排行榜
美國時代(Time)雜誌最新選出二○○ 八年十大最夯、而且高貴不貴的3C商品
– TIME's Best Inventions of 2008
Characteristics of Embedded Systems
Single-functioned
– Executes a single program, repeatedly
Embedded System Challenges
Differs from general-purpose computing
– Real-time constraints – Power constraints – Exotic hardware – Concurrency – Control systems – Signal processing – User interface
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