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机动车速度表测试仪硬件电路分析总体电路图机动车速度表测试仪12345678ABCD87654321DCBATitleNumberRevisionSizeA3Date:6-Jul-2012SheetofFile:F:\实习教学\老师培训\sch\速度测试仪.ddbDrawnBy:+5_67IC6BLM324+10_98IC6CLM324+12_1314IC6DLM324abfcgdedpabfcgdedpabfcgde3dpa11b7c4d2e1f10g5dp3dig112dig29dig38nc6LED1SP410401Kabfcgdedpabfcgdedpabfcgde3dpa11b7c4d2e1f10g5dp3dig112dig29dig38nc6LED2SP410401KR15100R16100R17100R18100C160.01UFR19100C120.1UFR20100VDDR21100R22100VDDPUSLEPULSEDIG1_D0DIG1_D1+8.5VDIG1_D2OUTDIG1_D3DIG1_D4DIG1_D5DIG1_D6DIG1_D7DIG1_S0DIG1_S1DIG1_S2DIG1_S3DIG1_S4DIG1_S5R2410KR2510KR2610KQ79015Q69015Q59015R2910KR2810KR2710KQ29015Q39015Q49015VDDDIG1_C5DIG1_S5DIG1_C4DIG1_S4DIG1_C3DIG1_S3DIG1_C0DIG1_S0DIG1_C1DIG1_S1DIG1_C2DIG1_S2DIG1_D5DIG1_D4DIG1_D3DIG1_D2DIG1_D1DIG1_D0DIG1_C5DIG1_C4DIG1_C3DIG1_C2DIG1_C1VDDDIG1_D6DIG1_D7abcdefgdpabcdefgdp123IC7OH1371234567J6CON78.6V12345678910111213141516J12CON16DIG1_C0D6IN4148REF11AVDD2OUT03DVDD4READ5OUT36GND7DIN8REF016GND15OUT214M/Z13LDAC12OUT211SCK10CS9U1MAX5135DA_DINDA_SCKDA_CSVDDC140.1UFC130.1UFE74.7UFC1547PF/0.1UF(E)OUTVDD12345678J108HEADERVDDWRDATACSLEDAE101000UE4220UC18CT4-103IN12OUT3U37805--TO-220C10104+5VE91000U8.6VC8104+8.5VREADYD3IN4004A1K2D4IN5819R20D5IN4004+5VR5220E8470UFR14100/0.5W+5VR13100/0.5WDVcc1P6.32P6.43P6.54P6.65P6.76NC7XIN8XOUT9AVSS210NC11P5.1/S012P5.0/S113P4.7/S214P4.6/S315P4.5/S416P4.4/S517P4.3/S618P4.2/S719P4.1/S820P4.0/S921P3.7/S1022P3.6/S1123P3.5/S1224P3.4/S1325P3.3/S1426P3.2/S1527P3.1/S1628P3.0/S1729P2.7/S1830P2.6/CAOUT/S1931P2.5/TA1CLK/S2032P2.4/TA1.4/S2133P2.3/TA1.3/S2234P2.2/TA1.2/S2335COM036P5.2/COM137P5.3/COM238P5.4/COM339R0340P5.5/R1341P5.6/R2342P5.7/R3343P2.1/TA1.144P2.0/TA0.245P1.7/CA146P1.6/CA047P1.5/TA0CLK/ACLK48P1.4/TA1.049P1.3/TA1.0/SVSOut50P1.2/TA0.151P1.1/TA0.0/MCLK52P1.0/TA0.053TDO/TDI54TDI/TCLK55TMS56TCK57RST/NMI58P6.059P6.160P6.261AVss162DVss63AVcc64IC1MSP430F413Y132.768KC210PFC310PFR6100KC40.1UFC60.1UFVDDTCKTMSTDITDORSTDIG1_C5DIG1_C4DIG1_C1DIG1_D3DIG1_D4DIG1_D5DIG1_D6DIG1_D7DIG1_D2DIG1_D1DIG1_D0NC1XINXOUTNC2NC3P5.1P5.0CSDATAWRP4.3P4.1P4.0P4.2R1C8C7C6C5C4C3C2C1P2.3P2.2COM0P5.2P5.3R03DA_SCKDA_CSDA_DINREADYP2.1P2.0P1.7DIG1_C0PULSEDIG1_C3DIG1_C2GND_AAVCCAVCCGND_AR70R80VDDC50.01uF123456789JP1CON9VDD123456789101112131415161718J14CON18LEDC2R4R3_3R2C5C2R1C3C1C4C5C6C8C1R2R4R2R3_3R4P4.4VDDR231KC10.01UF+5VAREF_EXTE310UF123J5CON3AREF_EXTAREFAREF_INAREF_INAREF12345678910111213141516J1CON1612345678910111213141516J4CON1612345678910111213141516J3CON1612345678910111213141516J2CON16WRDATACSP5.0P5.1NC3NC2XOUTXINNC1DIG1_D7DIG1_D6DIG1_D5DIG1_D4DIG1_D3VDDPULSEDIG1_C0P1.7P2.0P2.1READYDA_DINDA_CSR03DA_SCKP5.3P5.2COM0P2.2P2.3R1R3_3R4C1C2C3C4C5C6C7C8P4.0P4.1P4.2P4.3P4.4R2AVCCGNDGND_ADIG1_D2DIG1_D1DIG1_D0RSTTCKTMSTDITDODIG1_C5DIG1_C4DIG1_C3DIG1_C2DIG1_C1L3500uHGND1VCC2VIN3VCC4IC2ASM1171122E2100UFVDDVDD1234567891011121314J9CON14VDDTDOTDITMSDIG1_C5TCKDIG1_C4RSTNC1M/Z2LDAC3NC4SCK5CS6DIN7AGND8NC9READY10DVDD11OUT12AVDD13REFI14REFO15AGND16U2MAX5139VDDDA_SCKDA_CSDA_DINREADYVDDOUT+5VVDDPULSE+8.5VOUT1234567891011121314J7CON148.6V132IN112VinA1K2D21N4004L11.5mH12J13HEADER2E1220UC7CT4-104A1K2D1IN5822A1K2D111N4004A1K2D121N4004A1K2D131N4004A1K2D141N4004A1K2D71N4004A1K2D81N4004A1K2D91N4004A1K2D101N4004IN1GND3OUT2IC4REF3040123456789JP2CON9VDDR2R3_3R4DIG1_D5DIG1_D4DIG1_D3DIG1_D2DIG1_D1DIG1_D0DIG1_C5DIG1_C4DIG1_C3DIG1_C2DIG1_C1VDDDIG1_D6DIG1_D712345678910111213141516J11CON16DIG1_C0E111000UF+5VAREFAREF_INC210.1UF/47PF(I)C200.1UFC190.1UFE124.7UFE134.7UFE144.7UF+5V+3_21V+4GND11IC6ALM324+8.5VF11A+-R162kC171000pL2500uHE51000UC9104E61000UC111048.6VOUTZ15V612JP6HEADER2BCEQ98050BCEQ82SC2625电路图说明►从原理图可以看出本原理图分为三部分（由线条分开），也就是本设计产品含有三块电路板：一、电机驱动板；二、显示器板；三、主板，下面就按各部分电路逐一分析机动车速度表测试仪主控CPU电路图1234ABCD4321DCBATitleNumberRevisionSizeADate:6-Jul-2012SheetofFile:F:\实习教学\老师培训\sch\速度测试仪.ddbDrawnBy:D6IN4148DVcc1P6.32P6.43P6.54P6.65P6.76NC7XIN8XOUT9AVSS210NC11P5.1/S012P5.0/S113P4.7/S214P4.6/S315P4.5/S416P4.4/S517P4.3/S618P4.2/S719P4.1/S820P4.0/S921P3.7/S1022P3.6/S1123P3.5/S1224P3.4/S1325P3.3/S1426P3.2/S1527P3.1/S1628P3.0/S1729P2.7/S1830P2.6/CAOUT/S1931P2.5/TA1CLK/S2032P2.4/TA1.4/S2133P2.3/TA1.3/S2234P2.2/TA1.2/S2335COM036P5.2/COM137P5.3/COM238P5.4/COM339R0340P5.5/R1341P5.6/R2342P5.7/R3343P2.1/TA1.144P2.0/TA0.245P1.7/CA146P1.6/CA047P1.5/TA0CLK/ACLK48P1.4/TA1.049P1.3/TA1.0/SVSOut50P1.2/TA0.151P1.1/TA0.0/MCLK52P1.0/TA0.053TDO/TDI54TDI/TCLK55TMS56TCK57RST/NMI58P6.059P6.160P6.261AVss162DVss63AVcc64IC1MSP430F413Y132.768KC210PFC310PFR6100KC40.1UFC60.1UFVDDTCKTMSTDITDORSTDIG1_C5DIG1_C4DIG1_C1DIG1_D3DIG1_D4DIG1_D5DIG1_D6DIG1_D7DIG1_D2DIG1_D1DIG1_D0NC1XINXOUTNC2NC3P5.1P5.0CSDATAWRP4.3P4.1P4.0P4.2R1C8C7C6C5C4C3C2C1P2.3P2.2COM0P5.2P5.3R03DA_SCKDA_CSDA_DINREADYP2.1P2.0P1.7DIG1_C0PULSEDIG1_C3DIG1_C2GND_AAVCCAVCCR70R80VDDC50.01uFR2R3_3R4P4.4VDDR231KC10.01UF1234567891011121314J9CON14VDDTDOTDITMSDIG1_C5TCKDIG1_C4RSTGND_A机动车速度表测试仪主控CPU(MSP430F413)说明►见上图，单片机的JTAG口用来下载的，此款单片机是16位混合信号处理器，所以就有数字电源、地和模拟电源、地，我们用去耦电容C4、C5分别旁路，通过R7、R8把分别地和电源连接在一块，当然也可以换成电感来连接，这是为了防止模拟信号干扰数字信号。晶振电路和复位的电路就不多讲了，口线控制相应外围器件，用P1.5口来接收脉冲计数，加了一个上拉电阻和滤掉干扰信号的电容机动车速度表测试仪电源电路1234ABCD4321DCBATitleN