很少有技術開發(fā)人員會面臨當今醫(yī)療設備制造商承擔的如此巨大壓力。設備性能或可靠性的一點點失誤即意味著生與死之別，沒有出錯的余地。因此，醫(yī)療設備開發(fā)人員在選擇系統(tǒng)關鍵元件時，遵循數(shù)字電子工業(yè)中某些最嚴格的標準——只有最好的元件才能勝任這一任務。 

    UTAS是一家病人監(jiān)護和診斷用醫(yī)療設備提供商，主要供應在醫(yī)療機構和救助現(xiàn)場使用的各種心電圖儀、病人監(jiān)護儀、脈搏血氧飽和度儀和其它產(chǎn)品。醫(yī)療人員可以借助UTAS設備清晰地查看病人數(shù)據(jù)，使他們做出更及時、更有根據(jù)的病人護理決策。為了維護公司的聲譽，保證交付的每個系統(tǒng)的質量，UTAS公司更是借助ADI公司的技術實力，確保全系列產(chǎn)品具有高性能的信號處理和魯棒性能——UTAS最新推出的便攜式病人監(jiān)護儀產(chǎn)品UM300便是其中的典型代表產(chǎn)品。 

用于測量重要體征的關鍵技術

    UTAS公司的系統(tǒng)以高測量精度、可靠性和性價比著稱，具有緊湊的外形尺寸，支持電池供電，方便攜帶。全球超過25個國家的醫(yī)院、診所和救護車都用上了UTAS的系統(tǒng)，這些系統(tǒng)設計用于很多種病人護理應用，包括外科手術、心臟病診治、重癥特別護理、臨床護理和病人轉移。 

    這款新型UM300多參數(shù)病人監(jiān)護儀示范了UTAS對ADI技術的創(chuàng)新性應用，采用了ADI的Blackfin?處理器進行數(shù)字信號處理（DSP），其它先進的ADI元件實現(xiàn)無縫連接的信號鏈，從而實現(xiàn)了系統(tǒng)的高性價比和緊湊外形尺寸。ADI公司在醫(yī)療保健市場積累的豐富經(jīng)驗和全球領先的信號處理技術幫助UTAS公司成功為UM300實現(xiàn)了統(tǒng)一的系統(tǒng)設計架構，該架構使UM300實現(xiàn)了很多強大的信號處理、組網(wǎng)和分析功能。 

端到端信號處理平臺

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title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" 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title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" 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title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin" title="Blackfin">Blackfin BF561實現(xiàn)集中的數(shù)字信號處理——實時數(shù)字濾波、預處理和最終處理——并控制系統(tǒng)的測量虛擬化功能及其視頻接口，使用戶能夠通過高分辨率彩色顯示器同時觀察多達8個實時波形。Blackfin BF561內(nèi)部采用兩個Blackfin內(nèi)核組成的對稱多處理配置，每個內(nèi)核的工作頻率可以高達600MHz/1200 MMACS，并自帶2.6Mb的片上SRAM存儲器。32位外部端口和雙16通道DMA控制器可提供特別高的帶寬。由于在BF561架構內(nèi)集成了兩個Blackfin內(nèi)核，從而使UM300顯著節(jié)省了空間，降低了復雜性，實現(xiàn)了緊湊的外形。 

    Blackfin BF561集成有針對應用優(yōu)化的片上外設，這些外設可直接連接UM300內(nèi)的ADI  AD7190  Σ-Δ模數(shù)轉換器和AD7689 PulSAR? ADC。UM300系統(tǒng)還使用了ADI的AD8605單電源運算放大器、AD8220結型場效應晶體管（JFET）輸入儀表放大器、ADP3335精密穩(wěn)壓器和ADuM2401 iCoupler?四通數(shù)字隔離器，從而形成了一個無縫連接的高性能元器件平臺。 

Blackfin得到UTAS的廣泛使用

    UTAS對Blackfin的成功運用還擴展到了其它UTAS系統(tǒng)，包括UCARD 100心電圖儀和USP 100注射泵。這兩個產(chǎn)品都使用了Blackfin BF533處理器實現(xiàn)高性能的生物醫(yī)學信號處理，并且都能與UM 300實現(xiàn)互操作。 

    在UTAS的UCARD 100和USP 100系統(tǒng)中使用的Blackfin BF533工作頻率可以高達756MHz（1512 MMAC），片上SRAM存儲器容量高達148kB，并集成了支持在片上存儲器、片外存儲器和系統(tǒng)外設之間進行一維和二維DMA傳送的先進DMA控制器，從而使系統(tǒng)性能達到最大。Blackfin BF533處理器架構集成了多功能串口（SPORT）、UART、SPI兼容端口和可編程并口（PPI），從而為UTAS的設計團隊提供了無縫的外設連接，以適應各種配置選擇。 

    Blackfin BF561和BF533都擁有可以降低處理器級和系統(tǒng)級功耗的眾多創(chuàng)新架構特性，包括獨立的動態(tài)功率管理機制。在這種機制下，工作頻率和工作電壓可以獨立控制，以滿足正在執(zhí)行算法的性能要求。Blackfin在工作電壓為0.8V時的功耗可低至0.15 mW/MMAC，這種低功耗特性可以幫助UTAS系統(tǒng)設計師盡可能地延長所有基于Blackfin的產(chǎn)品的電池壽命，這正是實現(xiàn)產(chǎn)品便攜化的關鍵。 

ADI——創(chuàng)新之源

    ADI公司針對ADI處理器系列開發(fā)的易安裝、易使用的軟件開發(fā)和調試環(huán)境VisualDSP++進一步幫助UTAS實現(xiàn)了產(chǎn)品開發(fā)過程的簡化。VisualDSP++是ADI公司CROSSCORE系列軟硬件工具中的一員，也包含EZ-KIT Lite評估套件，所有這些工具都有助于開發(fā)人員縮短設計周期、加快產(chǎn)品上市速度。 

    由于UTAS的病人監(jiān)護和診斷系統(tǒng)的核心使用了ADI的技術，可確保用戶獲得無與倫比的信號處理性能，實現(xiàn)對病人重要體征的精確測量。ADI公司一直以來通過提供高性能、功能豐富的信號處理技術幫助醫(yī)療設備制造商實現(xiàn)先進醫(yī)療系統(tǒng)設計，而UTAS公司的新款UM 300病人監(jiān)護儀是其中一個最新例子。