HONEYWELL DCS卡件 DCS 900C52-0021 B&R4D1165.00-590 234-1BD60 IC670MDL640 TC-CCR013
HONEYWELL DCS卡件 DCS 900C52-0021 B&R4D1165.00-590 234-1BD60 IC670MDL640 TC-CCR013
HONEYWELL DCS卡件 DCS 900C52-0021 B&R4D1165.00-590 234-1BD60 IC670MDL640 TC-CCR013
傳感元件(變送器)將有用的物理信號(hào)轉(zhuǎn)換為電信號(hào),例如:用于測(cè)量壓力的壓阻橋、用于檢測(cè)超聲波的壓電傳感器以及用于測(cè)量氣體濃度的電化單元等。傳感元件產(chǎn)生的電信號(hào)都很小,并且為非理想狀態(tài),例如:溫度漂移和非線性傳輸函數(shù)等。
傳感器模擬前端(例如:德州儀器LMP91000)和傳感器信號(hào)調(diào)節(jié)器(例如:德州儀器PGA400/450),用于把這些傳感元件所產(chǎn)生的小信號(hào)放大到可用水平。PGA400/450包含完整的信號(hào)調(diào)節(jié)電路,以及可刺激傳感元件、管理功率并與外部控制器連接的一些電路。另外,如PGA400等器件還能夠?qū)@些傳感元件的非理想狀態(tài)進(jìn)行校準(zhǔn)。
多模態(tài)信號(hào)調(diào)節(jié)
通常,為了實(shí)現(xiàn)信號(hào)調(diào)節(jié)或者更高級(jí)別的監(jiān)控,我們需要對(duì)多個(gè)傳感元件的輸出進(jìn)行測(cè)量。例如,處理某個(gè)典型壓阻橋的輸出,便要求同時(shí)對(duì)橋和溫度傳感器的輸出進(jìn)行測(cè)量。同樣,處理熱電偶的輸出,要求同時(shí)對(duì)該熱電偶和測(cè)量連接器溫度的傳感器的輸出進(jìn)行測(cè)量。測(cè)量連接器溫度的目的是完成冷接點(diǎn)補(bǔ)償。同一個(gè)信號(hào)調(diào)節(jié)器對(duì)多個(gè)傳感元件進(jìn)行處理的情況被稱作“多模態(tài)信號(hào)調(diào)節(jié)”。
混合信號(hào)信號(hào)調(diào)節(jié)
傳感器信號(hào)調(diào)節(jié)的另一個(gè)方面是發(fā)生信號(hào)調(diào)節(jié)的電域。德州儀器PGA309器件的電阻橋傳感元件的信號(hào)調(diào)節(jié)發(fā)生在模擬域內(nèi)。在如PGA400等器件中,信號(hào)調(diào)節(jié)同時(shí)發(fā)生在模擬和數(shù)字域內(nèi)。后一種情況被稱作“混合信號(hào)信號(hào)調(diào)節(jié)”。
混合信號(hào)調(diào)節(jié)器的一個(gè)關(guān)鍵組成部分是模數(shù)轉(zhuǎn)換器(ADC)。在信號(hào)達(dá)到智能補(bǔ)償模塊以前,兩個(gè)傳感元件始終都有獨(dú)立的信號(hào)通路。之后,該模塊組合這兩個(gè)信號(hào),產(chǎn)生經(jīng)過處理之后的輸出。
APPLIED MATERIALS 0010-25060 MEGASONIC PLATE, CHAMFERED AND RF MATCH
APPLIED MATERIALS 0010-26524 ASSEMBLY 300MM ROTATION HTF/EP
APPLIED MATERIALS 0010-27623 ASSEMBLY NON-PLT 300MM DER WRIST HIGH TEMP
APPLIED MATERIALS 0010-29842 ASSEMBLY,300MM DBR HIGH TEMP BELT WRIST,TITANIUM
APPLIED MATERIALS 0010-30029 P-CHUCK LIFT, PRECISION 5000
APPLIED MATERIALS 0010-30057 ASSEMBLY, CATHODE LINER, MXP+
APPLIED MATERIALS 0010-30111 WAFER HEATER 8"
APPLIED MATERIALS 0010-30136 ELECTRICAL ASSY, CAP/BLOCK
APPLIED MATERIALS 0010-30354 ASSY, PLASMA CHUCK, THICK CABLE
APPLIED MATERIALS 0010-30576 OBS, ASSY, HEATER LIFT, GIGA-FILL SACVD
APPLIED MATERIALS 0010-30579 ASSY ADPTR, HOSE DISCONNECT, SUPPLY
APPLIED MATERIALS 0010-30580 ASSY ADPTR, HOSE QUICK DISCONNECT, RETURN
APPLIED MATERIALS 0010-30591 IPS UPPER MAGNET RING ASSY
APPLIED MATERIALS 0010-30610 ASSY BLADE
APPLIED MATERIALS 0010-30612 MATCH COOLIN HARNESS
APPLIED MATERIALS 0010-30686 MATCH-RF OX-ETCH
APPLIED MATERIALS 0010-35227 PCB
APPLIED MATERIALS 0010-35713 ASSY FAN MODULE DOME
APPLIED MATERIALS 0010-35718 WATER LINE ASSY., MAINFRAME T
APPLIED MATERIALS 0010-35792 ASSY, FIBER OPTIC SENSOR CABLE, EPLIS
APPLIED MATERIALS 0010-35983 ASSY, PWR CBL, IQ PUMPEDWAROS, CENTURA
APPLIED MATERIALS 0010-36152 LID
APPLIED MATERIALS 0010-36159 THROTTLE VALVE SHIPPING PLATE
APPLIED MATERIALS 0010-36160 LIFT PLATE
APPLIED MATERIALS 0010-36162 RF MATCH ASSY
APPLIED MATERIALS 0010-36165 AC POSTER DIST. BOX EPLIS
APPLIED MATERIALS 0010-36236 ASSY, RGA PORT, DXZ AND UNIV PE-TEOS, CENTURA
APPLIED MATERIALS 0010-36325 ASSY, 208VAC DISTRIBUTION, DPS CHAMBER
APPLIED MATERIALS 0010-36522 ASSY EDGE RING
APPLIED MATERIALS 0010-36576 HOSE ASSY 30 INSUL C-TFE/SST BRAID FEMALE SEAL
APPLIED MATERIALS 0010-36584 ASSY,LID,DCSXZ
APPLIED MATERIALS 0010-36618 ASSY,CERAMIC DOME, DPS POLY CHAMBER
APPLIED MATERIALS 0010-36759 E.S.C. ASSY PED. 200MM NOTCH WFB
APPLIED MATERIALS 0010-37130 CLAMP ASSY. XFER CHAMBER LID
APPLIED MATERIALS 0010-37163 HTD THROTTLE VALVE ASSY
APPLIED MATERIALS 0010-37727 GAS SPRING
APPLIED MATERIALS 0010-37828 ASSY,DISPLAY BOARD HF,RF GEN
APPLIED MATERIALS 0010-37828 ASSY,DISPLAY BOARD HF,RF GEN
APPLIED MATERIALS 0010-37911 LINER,2 PIECE,TURBO PORT
APPLIED MATERIALS 0010-38023 LID, VIEW TI/HT TIN
APPLIED MATERIALS 0010-38194 ASSEMBLY, VALVE LOCKOUT/TAGOUT
APPLIED MATERIALS 0010-38281 5000/5200 CVD Z ASSY SR CENTURA
APPLIED MATERIALS 0010-38754 ASSY HRDTCU DPS CHAMBER
APPLIED MATERIALS 0010-38908 ASSY,BLADE.,6 CENTURA
APPLIED MATERIALS 0010-39446 ASY FAN Z
APPLIED MATERIALS 0010-39494 ASSY. FRONT PANEL COND. PAINT SACVD
APPLIED MATERIALS 0010-39558 KIL, HTR AMAT
APPLIED MATERIALS 0010-39665 ASSY, LOCKOUT VALVE W/ONE TOUCH FTGS
APPLIED MATERIALS 0010-39665 ASSY, LOCKOUT VALVE W/ONE TOUCH FTGS
APPLIED MATERIALS 0010-39749 DPS R1,UNIVERSAL,CERAMIC