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瀚佳科技(深圳)有限公司是一家專業(yè)經(jīng)營(yíng)IC電子元器件企業(yè)。代理分銷品牌有MAXIM、ADI、Microchip、TI、Xilinx、ALTERA、ATMEL、Infineon、SST、ISSI、NXP、PHILIPS、STC、Avago、Agilent、NS、POWER、ST、Winbond、FREESCALE、NS、FSC、IR、ON等世界知名品牌IC。包括:IC集成電路、傳感器、光電元件、濾波器、晶體、振蕩器、保險(xiǎn)絲、繼電器、編程器、連接器、隔離器、可編程邏輯器件、功率模塊、電源模塊、光耦、二三極管、MOS管、電容電阻、電感等。 產(chǎn)品廣泛應(yīng)用于航天、通訊、電力、電源、電子電器、儀器儀表、醫(yī)療器械、自動(dòng)控制、汽車、船舶等高科技領(lǐng)域。公司備有部分現(xiàn)貨,并在北美、歐洲、亞洲、港澳臺(tái)有著良好供貨渠道,保證客戶拿到有竟力優(yōu)勢(shì)產(chǎn)品。在市場(chǎng)競(jìng)爭(zhēng)日趨激烈的當(dāng)下,
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MIC5381-PPYFTTR MIC5381-SSYFTTR MIC68220YMLTR MIC69303YMLTR MIC94040YFL MIC94041YFL MIC94042YFL MIC94043YFL MIC94060YMLTR MIC94060YMT MIC94060YMTTR MIC94061YML MIC94061YMLTR MIC94061YMT MIC94061YMTTR MIC94062YML MIC94062YMLTR MIC94062YMT MIC94062YMTTR MIC94063YML MIC94063YMLTR MIC94063YMT MIC94063YMTTR MIC94064YMT MIC94064YMTTR MIC94065YMT MIC94065YMTTR MIC94070YMT MIC94070YMTTR MIC94071YMT MIC94071YMTTR MIC94072YMT MIC94072YMTTR MIC94073YMT MIC94073YMTTR MIC94080YFT MIC94080YFTTR MIC94082YFT MIC94082YFTTR MIC94083YFT MIC94083YFTTR MIC94084YFT MIC94084YFTTR MIC94085YFT MIC94085YFTTR MIC94090YMT MIC94091YMT MIC94092YMT MIC94093YMT MIC94094YMT MIC94095YMT MIC94300YMTTR ML2870AGPZ060 ML2871GDZEAD MM1475CCBE MM3323HRRE MMA-062020-C3 MMA20312BT1 MMA20312BVT1 MMA25312BT1 MMG20271HT1 MML20242HT1 MMPF0100F0EP MMPF0100F0EPR2 MMPF0100F1EP MMPF0100F1EPR2 MMPF0100F2EP MMPF0100F2EPR2 MMPF0100NPEP MMPF0100NPEPR2 MMPF0100NPZES MMPF0100NPZESR2 MMZ09312BT1 MMZ25332BT1 MN101C66DAA MN101C66DAC MN101C66DAJ MN101C66DAG MP1519DQL-LF-Z MP2106DQ-LF-Z MP2119DQ-LF-Z MP2351DQ-LF-Z MP2602DQ-LF-Z MP26023DQ-LF-Z MP26021DQ-LF-Z MP26028EQ MP26028EQ-LF-Z MPC17559EP MPC17559EPR2 MS1AB-SLB MSC1201Y2RHHR MSC1201Y2RHHRG4 MSC1201Y2RHHT MSC1201Y2RHHTG4 MSC1201Y3RHHR MSC1201Y3RHHRG4 MSC1201Y3RHHT MSC1201Y3RHHTG4 MSC1202Y2RHHR MSC1202Y2RHHRG4 MSC1202Y2RHHT MSC1202Y2RHHTG4 MSC1202Y3RHHR MSC1202Y3RHHRG4 MSC1202Y3RHHT MSC1202Y3RHHTG4 MSC5503 MSP430F1121AIRGER MSP430F1121AIRGET MSP430F133IRTDR MSP430F133IRTDT MSP430F1481IRTDR MSP430F1481IRTDT MT6119N MT6120N-L MT6129N-L MT6301N MT6301N/B MT6305BN MT6305BN/C MT6601CA MT6601CA/A MT9T001C12STC MVPG15B-A2-NAE1C00 MXC6225XU MXL5003S N098E NB100LVEP221MNG NB100LVEP221MNRG NB100LVEP222MNG NB100LVEP222MNRG NB3N121KMNG NB3N121KMNR2G NB4L7210MNG NB4N121KMNG NB4N121KMNR2G NB618DL NB618DL-LF-Z NB7L111MMN NB7L111MMNG NB7L111MMNR2 NB7L111MMNR2G NB7N017MMN NB7N017MMNG NB7N017MMNR2 NB7N017MMNR2G NCN1154MUTAG NCN1188MUTAG NCN2612MTTWG NCN7200MTTWG NCN9252MUTAG NCP1508MNR2 NCP1508MNR2G NCP1509MNR2 NCP1509MNR2G NCP1546MNR2G NCP1547MNR2G NCP1589BMNTXG NCP2811AMTTXG NCP2811BMTTXG NCP3163BMNR2G NCP3163MNR2G NCP5030MTTXG NCP5201MN NCP5201MNG NCP5201MNR2 NCP5201MNR2G NCP5203MNR2 NCP5203MNR2G NCP5210MNR2 NCP5210MNR2G NCP5214MNR2 NCP5214MNR2G NCP5217AMNTXG NCP5220AMNR2 NCP5220AMNR2G NCP5220MNR2 NCP5220MNR2G NCP5360AMNR2 NCP5360AMNR2G NCP5360RMNR2G NCP5385MNR2G NCP5810DMUTXG NCP6121S52MNR2G NCP6131NS52MNR2G NCP6131S52MNR2G NCP6132AMNR2G NCP6132BMNR2G NCP6132MNR2G NCP6151S52MNR2G NCP6153MNTWG NCP694DSAN33T1G NCV3163MNR2G NCV51411MNR2G NCV8614BMNR2G NCV8614MNR2G NCV8842MNR2G NCV8843MNR2G NJG1617K11-TE1
一種新型智能胎兒監(jiān)護(hù)系統(tǒng)設(shè)計(jì)
智能胎兒監(jiān)護(hù)系統(tǒng)選用TI公司生產(chǎn)的帶24位A/D轉(zhuǎn)換器并具有較強(qiáng)的模擬性能和數(shù)字處理能力的MSC1210微處理器,該微處理器把輸入通道選擇、緩沖、放大、增益調(diào)整、A/D轉(zhuǎn)換和數(shù)字處理集成到單片電路上,僅用一片集成電路即可實(shí)現(xiàn)胎心率、宮縮壓力和胎動(dòng)次數(shù)等監(jiān)護(hù)指標(biāo)的數(shù)據(jù)采集和對(duì)語(yǔ)音器、聲振器的控制。智能胎兒監(jiān)控的控制依據(jù)是胎心率,如何精確及時(shí)得到胎心率是智能胎兒監(jiān)護(hù)系統(tǒng)的控制前提。針對(duì)胎心多普勒信號(hào)具有信噪比低、非平穩(wěn)的隨機(jī)性特點(diǎn),計(jì)算胎心率時(shí)出現(xiàn)1/2、2/3和2倍心率,導(dǎo)致控制失誤,這里運(yùn)用小波分析結(jié)合雙重閾值算法,準(zhǔn)確、實(shí)時(shí)得到胎心率,確保了智能控制的有效進(jìn)行。
智能電腦胎兒監(jiān)護(hù)系統(tǒng)結(jié)構(gòu)
智能電腦胎兒監(jiān)護(hù)系統(tǒng)框圖如圖1所示。主要由超聲多普勒胎心探頭、宮縮探頭、胎動(dòng)探頭,胎心信號(hào)調(diào)理電路(低通濾波、絕對(duì)值運(yùn)算和包絡(luò)提取等)、宮縮壓力信號(hào)調(diào)理電路、語(yǔ)音控制、聲振器、MSC1210微處理器和計(jì)算機(jī)處理系統(tǒng)組成。以MSC1210和計(jì)算機(jī)處理系統(tǒng)為核心。
MSC1210控制監(jiān)護(hù)指標(biāo)的采集和通信,接收電腦命令控制語(yǔ)音器和聲振器。計(jì)算機(jī)系統(tǒng)實(shí)現(xiàn)智能控制、通信控制、數(shù)據(jù)處理算法、監(jiān)控顯示等功能模塊。
信號(hào)調(diào)理電路
針對(duì)胎心率監(jiān)護(hù)指標(biāo)的重要性和胎心多普勒信號(hào)的復(fù)雜性,這里重點(diǎn)介紹胎心多普勒信號(hào)的條理電路。電路主要對(duì)多普勒胎心音信號(hào)進(jìn)行低通濾波、絕對(duì)值運(yùn)算和包絡(luò)提取等預(yù)處理。低通濾波器采用截止頻率為250Hz的二階低通濾波器以濾除高頻信號(hào)和干擾。絕對(duì)值運(yùn)算電路如圖2.信號(hào)的強(qiáng)度增強(qiáng)一倍,提高了檢測(cè)靈敏度。包絡(luò)提取電路如圖3所示,采用截止頻率為10HZ的П形濾波和T形濾波相結(jié)合的低通濾波器。并聯(lián)的二極管和電容對(duì)電路中的負(fù)信號(hào)進(jìn)行限制,并對(duì)一定頻帶的高頻信號(hào)進(jìn)行消振。
MSC1210微處理器
智能胎兒監(jiān)護(hù)采集系統(tǒng)采用美國(guó)德州儀器公司推出的功能很強(qiáng)的單片微機(jī)MSC1210作為處理器,MSC1210芯片集成了8051微控制器和FLASH存儲(chǔ)器的精密摸數(shù)轉(zhuǎn)換器,該芯片采用增強(qiáng)型8051單片機(jī)內(nèi)核,縮短了指令執(zhí)行周期,使用低功耗設(shè)計(jì),內(nèi)部集成了一個(gè)24位分辨率的模數(shù)轉(zhuǎn)換器(ADC),其轉(zhuǎn)換速度可達(dá)1000HZ,8通道多路開(kāi)關(guān),模擬輸入通道測(cè)試電流源,輸入緩沖器,可編程增益放大器(PGA),內(nèi)部基準(zhǔn)電壓源,8位微控制器,程序/ 數(shù)據(jù)Flash存儲(chǔ)器和數(shù)據(jù)SRAM等。數(shù)字濾波器對(duì)輸出的數(shù)據(jù)進(jìn)行濾波。數(shù)字濾波器有快速、sin2和sin3三種。增強(qiáng)型8051內(nèi)核有兩個(gè)數(shù)據(jù)指針,其指令系統(tǒng)與標(biāo)準(zhǔn)8051的指令系統(tǒng)完全兼容,其執(zhí)行速度卻比8051快3倍,因此可工作在低頻,以降低功耗和噪聲。為了減小干擾,其模擬電源和數(shù)字電源分別供電。由于該芯片的集成度使智能胎兒監(jiān)護(hù)系統(tǒng)硬件電路變得簡(jiǎn)單,電路設(shè)計(jì)更加簡(jiǎn)潔,芯片的外圍元件非常少,從而使系統(tǒng)的可靠性得到了很大提高,而且大大縮短了開(kāi)發(fā)周期,降低了開(kāi)發(fā)成本。MSC1210接口電路原理如圖4.多普勒胎心信號(hào)和宮縮壓力信號(hào)經(jīng)IN0和IN2輸入,經(jīng)多路轉(zhuǎn)換器后送入緩沖器,可變?cè)鲆娣糯笃鲗?duì)輸入信號(hào)進(jìn)行放大。胎動(dòng)信號(hào)由MSC1210中斷處理。MSC1210經(jīng)RS485總線接收電腦下達(dá)的控制命令,經(jīng)P2口控制語(yǔ)音芯片完成語(yǔ)音提醒功能,通過(guò)P1.7控制聲振器完成自動(dòng)胎兒?jiǎn)拘压δ堋2捎肕SC1210作為微處理器更能精確、實(shí)時(shí)得到胎兒監(jiān)護(hù)指標(biāo),為智能控制提供保障。
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SFDG75BS101 SFHG42PS101 SGM3005XD/TR SGM3133YTQ16G/TR SGM3138YTQ16G/TR SH6962B SH6962BCAORGCR SH6962BAAORGCRG4 SI1000-C-GM SI1000-C-GMR SI1001-C-GM SI1001-C-GMR SI1002-C-GM SI1002-C-GMR SI1003-C-GM SI1003-C-GMR SI1004-C-GM SI1010-A-GM SI1010-A-GMR SI1012-A-GM SI1012-A-GMR SI1013-A-GM SI1013-A-GMR SI1015-A-GM SI1015-A-GMR SI1060-A-GM SI1060-A-GMR SI1061-A-GM SI1061-A-GMR SI1062-A-GM SI1062-A-GMR SI1063-A-GM SI1063-A-GMR SI1064-A-GM SI1064-A-GMR SI1065-A-GM SI1065-A-GMR SI1080-A-GM SI1080-A-GMR SI1081-A-GM SI1081-A-GMR SI1082-A-GM SI1082-A-GMR SI1083-A-GM SI1083-A-GMR SI1084-A-GM SI1084-A-GMR SI1085-A-GM SI1085-A-GMR SI2143-A30-GM SI2143-A30-GMR SI2161-D-GM SI2161-D-GMR SI2165-D-GM SI2165-D-GMR SI3210-E-FM SI3210-E-FMR SI3210-E-GM SI3210M-E-FM SI3210M-E-FMR SI3210M-E-GM SI3215-B-FM SI3215-B-FMR SI3215-C-FM SI3215-C-FMR SI3215M-C-FM SI3215M-C-FMR SI3216-C-FM SI3216-C-FMR SI32171-B-FM SI32171-B-FMR SI32176-B-FM SI32176-B-FM1R SI32176-B-FMR SI32176-B-GM SI32176-B-GMR SI32176-B-GM1 SI32176-B-GM1R SI32178-B-FM SI32178-B-FM1 SI32178-B-FMR SI32178-B-FM1R SI3230-E-FM SI3230-E-FMR SI3230M-E-FM SI3230M-E-FMR SI4126BM SI4126-BMR SI4134T-BM Si4134T-BMR SI4206-BMR Si4210-D-GM SI4210-D-GMR TUA6039B1 TUA6045 TUSB7320RKMR TUSB7320RKMT TW9910-NA2-GR TW9910-NA2-GRT TW9910-NB2-GR TWL3029BZWR TX810IRHHR TX810IRHHT TXB0104GXUR TXB0104QRGYRQ1 TXB0104RGYR TXB0104RGYRG4 TXB0104RUTR TXB0108RGY TXB0108RGYR TXB0108RGYRG4 TXB0108RGYT TXB0108RGYTG4 TXB0304RUTR TXBN0304RUTR TXS0104ERGYR TXS0104ERGYRG4 TXS4555RUTR UAA3537 UAA3537GHN/C1 UAA3537HN UAA3544HN/C1 UAA3595HN/C1 UBX-G5010-ST UCC28230DRNR UCC28230DRNRG4 UCC28230DRNT UCC28230DRNTG4 UCC28231DRNR UCC28231DRNRG4 UCC28231DRNT UCC28231DRNTG4 UM5059 UP6206AQGK UPA2350T1G-E4 UPD482445G5-60-7JG UPD65946GN-102-2M UPD78F4218AGF-3BA UPG2035T5F-A UPG2035T5F-E2-A UPG2157T5F-A UPG2157T5F-E2-A UPG2251T6M-A UPG2251T6M-E2-A UPG2301T5L-E2-A UPG2311T5F-A UPG2311T5F-E2-A USB1T1102MPX USB1T1103MPX USB2240-AEZG-06 USB2241-AEZG-05 USB2241-AEZG-06 USB2244-AEZG-05 USB2244-AEZG-06 USB2502-AEZG USB2512A-AEZG USB2512A-AEZG-TR USB2512-AEZG USB2512B-AEZG USB2512B-AEZG-TR USB2512BI-AEZG USB2512BI-AEZG-TR USB2512I-AEZG USB2513-AEZG USB2513B-AEZC USB2513B-AEZC-TR USB2513B-AEZG USB2513BI-AEZG USB2513BI-AEZG-TR USB2514 USB2514AEZG USB2514-AEZG USB2514-AEZG-TR USB2514AEZG-TR USB2514B-AEZC USB2514B-AEZC-TR USB2514B-AEZG USB2514B-AEZG-TR USB2514I-AEZG USB2514I-AEZG-TR USB2524-ABZJ USB2532-1080AEN-TR USB2532I-1080AENTR USB2533-1080AEN-TR USB2533I-1080AENTR USB2534-1080AEN-TR USB2534I-1080AENTR USB3250-ABZJ USB3321C-GL-TR USB3330E-GL-TR USB3500-ABZJ USB3740B-AI2-TR USB3740B-AI9-TR USB5537-AKZE USB5537B-4100AKZE USB5537B4100AKZETR USB5537BI4100AKZE USB5537BI4100AKZETR UX6603Q-V3 V112 V126 VC0917 VC0918 VC0918D VC0928D VC0938D VC0938D-LF VC0938D-40LP Si4700-A09-GM Si4700-A09-GMR SI4700-B15-GM SI4700-B15-GMR SI4703-B16-GM SI4703-B16-GMR SI5315A-C-GM SI5315A-C-GMR SI5315B-C-GM SI5315B-C-GMR SI5316-C-GM SI5316-C-GMR SI5317A-C-GM SI5317A-C-GMR SI5317B-C-GM SI5317B-C-GMR SI5317C-C-GM SI5317C-C-GMR SI5317D-C-GM SI5317D-C-GMR SI5319B-C-GM SI5319B-C-GMR SI5319C-C-GM SI5319C-C-GMR SI5322-C-GM SI5322-C-GMR SI5323-C-GM SI5323-C-GMR SI5324A-C-GM SI5324A-C-GMR SI5324C-C-GM SI5324C-C-GMR SI5324D-C-GM SI5324D-C-GMR SI5325C-C-GM SI5325C-C-GMR SI5326A-C-GM SI5326A-C-GMR SI5326B-B-GM SI5326B-B-GMR SI5326B-C-GM SI5326B-C-GMR SI5326C-C-GM SI5326C-C-GMR SI5327C-C-GM SI5327C-C-GMR SI5327D-C-GM SI5327D-C-GMR SI7606DN-T1-E3 SI7606DN-T1-GE3 SI8501-C-IM SI8502-C-IM SI8503-C-IM SI8511-C-IM SI8512-C-IM SI8513-C-IM SiI9287ACNU SII9287CNU SIO1036-ZG SIP32401ADNP-T1GE4 SIP32402ADNP-T1GE4 SIP32411DNP-T1-GE4 SIP32431DNP3-T1GE4 SIS187 SKY12146-321LF SKY12338-337LF SKY12407-321LF SKY13267-321LF SKY13299-321LF SKY13318-321LF SKY13345-368LF SKY13352-337LF SKY13353-337LF SKY13374-397LF SKY13385-460LF SKY65111-348LF SKY65206-11 SKY65206-13 SKY65208-R4 SKY65208-11 SKY65227-11 SKY74073-13 SKY74117 SKY74117-13 SKY74117-13A SKY77148-15 SKY77149-14 SKY77162-12 SKY77175-14 SKY77252-13 SKY77255-11 SKY77304-17P SKY77324-12 SKY77324-12B SKY77328-13 SKY77328-13A SKY77506-13 SKY77506-13A SKY77518-11 SKY77518-11A SKY77518-21 SKY77518-21A SKY77531-11 SKY77531-21 SKY77542-11 SKY77547-11 SKY77552-11 SKY77592-21 SL28647BLC SL28647BLCT SL28647CLC SL28647CLCT SL28EB742ALC SL28EB742ALI SLG84450V SLG8SP628VTR SM0301L-423-G02 SM2110 SM8132AB-G-EL SN3100 SN3100JIR1 SN3103I420E SN3189I320E SN3218I424E SN3226JIR1 SN3227I208 SN3227I208E SN3228AI212E SN3228BI212E SN3726JIR1 SN4066JIR1 SN4915I416E SN65LVCP1414RLJR SN65LVCP1414RLJT
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