冷祁：基于TMS320F2812的数据采集及FFT设计
参考文献
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安徽工程科技学院毕业设计（论文）
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冷祁：基于TMS320F2812的数据采集及FFT设计
附录A 系统原理图
1.8V
3.3VDSP-RS#X1/XCLKINX2XWEXRD7776119134160676623375675100112128143154193238525870788699105113120129142153316481114145691715982844251161X1/XCLKINX2XCLKOUTTESTSELXRSTEST1TEST2VDDVDDVDDVDDVDDVDDVDDVDDVDDVSSVSSVSSVSSVSSVSSVSSVSSVSSVSSVSSVSSVSSVSSVSSVDDIOVDDIOVDDIOVDDIOVDDIOVDD3VFLXMP/MCXHOLDXHOLDAXWEXRDXR/WXREADYADCINA7ADCINA6ADCINA5ADCINA1467ADCINA1368ADCINA1269ADCINA1170ADCINA1071172ADCINB7173ADCINB6174ADCINB5ADCINB4ADCINB39ADCINB28ADCINB17ADCINB06ADCREFP5ADCREFM431211061164ADCLO123117551165ADCINA7ADCINA6ADCINA5ADCINA4ADCINA3ADCINA2ADCINA1ADCINA0ADCINB7ADCINB6ADCINB5ADCINB4ADCINB3ADCINB2ADCINB1ADCINB0C6TRIPC5TRIPC4TRIPC3TRIPC2TRIP636262411123122117T2PWM_T2CMP116T1PWM_T1CMP109107106104102727160595755539190140MDRAMFSDXAMRA20C1TRIPTPCLKEINA1CA3_QP1CAP2_QEP2D2IRT2PCWAM_TCMPT1_QEAP1PT1PWM_TCPMKEINB2CATPCL6_QP1CAP5_QEP4TD4ICMRP3BPT4PCWAM_TP4_QET3PWM_T3CMPADCREFPAETADDCRCBGSEREXFINCREFMAVSSREFBGAVDDREFBGSXCIPLRXXF_LDDBISSCITXDBADCLOVSSA1VSSA2VDDA1VDDA2VVVVSS1DDAIODD1SSAIOR144K741166163162FSMMCLKXRAAMCLKXACANRXACCIANTXSRXDAASCITXDASPISTEA22292625288924K9AGNDR15TDOTRST3.3VSCIRXDASCITXDA1761127131TDITCK136EMU1EMU0146137135126504948474645TMSTDOTDITCKEMU1EMU0TRSTPWM12TMSPWM11PWM10PWM9PWM8PWM7SPISTEA87157SPISPICIMLKIASASPICLKIAAS1PIS55OMXNMI_ICNSTO1C3SPISIMOAIN2_AXDTX4CTTRIP/EVBOSOSPISIMAC35T3CTRIP_PDPINTT2CTVXABISOOC34XRIINP/ET1_T1CTRIP_PDPINTA41450011511498379115110XA[0]XA[1]XA[2]XA[3]XA[4]XA[5]XA[6]XA[7]XA[8]XA[9]XA[10]XA[11]XA[12]XA[13]XA[14]XA[15]XA[16]XA[17]XA[18]XD[0]XD[1]XD[2]XD[3]XD[4]XD[5]XD[6]XD[7]XD[8]XD[9]XD[10]XD[11]XD[12]XD[13]XD[14]XD[15]XZCS6AND7XZCS0AND1XZCS2PWM1PWM2PWM3PWM4PWM5PWM6+5V5643111210TMS320F281210uF10uFC4+U118438085103108111118121125130132138141139148152156158212427303336395465687374969713914713344889293949598101PWM1PWM2PWM3PWM4PWM5PWM6XCS74K74K7R124K7R11XA0XA1XA2XA3XA4XA5XA6XA7XA8XA9XA10XA11XA12XA13XA14XA15XA16XA17XA18XD0XD1XD2XD3XD4XD5XD6XD7XD8XD9XD10XD11XD12XD13XD14XD15R13PMW[1..6]0.1uFC5+XD[0..15]1RESET1IN1IN1GEN1ND1OUT1FB/NC1OUT28232425XA[0..18]100kR5100kR6CVDDX1/XCLKINX2C224pF3.3VY130MHZC124pFC50.1uFC72RESET10uF10uFVCCC110.1uFC12C132IN2IN2EN2GND2OUT2OUT22++DSP-RS#171819912718314NCNCNCNCNCNCNCNCNCNCNCNCNC+3.3VR410K151620212627C30.1uFDVDDSWS1U1410uFTPS767D318(POWER)10uFC8C9++0.1uFC10GND- 24 -
ACINB0ADAD1OESCITXDASCIRXDA1OE1A11A21A31A41A52OE2A12A22A32A42A5XSCITXDAXSCIRXDAGNDXSPISIMOAXSPISIMIAXSPICLKAXSPISTEA10HEADERSN74CBTD3384Vcc1B11B21B31B41B5GND2B12B22B32B42B52OESPISIMOASPISIMIASPICLKASPISTEA21222324HEAD2E5R 172X6227282930安徽工程科技学院毕业设计（论文）
134781113141718212224256910121516192023PWM1PWM2PWM3PWM4PWM5PWM6T1PWM_T1CMPT2PWM_T2CMP791113151719313312345678910DCINB0ACINB1DCINB1ACINB2DCINB2B3B3B4B4DCINB7CINCINCINCINJ13.3VACINB5DCINB5ACINB6DCINB6XASPISCINIMB7OA3.3VJ1JP2+15[max]AGNDJP3JP412-15[min]AGND12+3.3AAGND12CON218012141618203213534246J2AGNDACINA0A0A1A1A2A2A3A3A4A4A5A5A6A6ACINA7DCINA7U2CINCINCINCINCINCINCINCINCIN5678910XD11XD12XD13XD14XD15XD012343.3VCINCINCINCINDDDDDDDDDDDADADADADADAD5V3.3V5VCC21222324HEAD2E5R 172X6227281801214161820303234246J1XSPISTEAXSPISIMIAWRGUNBDGNDI/O6I/O7I/O8I/I/OO190I/O11I/O12I/O13I/O14I/O15VDDVDDI/O0I/O1I/O2I/O3I/O4I/O5AT25010AAGNDR5+15[max]100C34.7uFAGNDC41uFJTAGR20A11A12A13CEWEOENCA0A1A2A3A4A54.7KR194.7K678910AAAAAAAAA141516173.3V234158192021222324252627424344281674111514131211XA10XA9XA8XA167XAXA1721018C54.7uFAGNDXCS7C61uFADCINA[0..7]ADCINA0ADCINA1ADCINA2ADCINA3ADCINA4ADCINA5ADCINA6ADCINA7ADCINB0ADCINB1ADCINB2ADCINB3ADCINB4ADCINB5ADCINB6ADCINB7ADCREFPADCREFMADCLOJ324681012141618202224262830323436384013579111315171921232527293133353739C140.1uFXA6XA5XA4XA3XWEXRDAAAAAAAAAC15+3.3A3.3VXXXXXXXXX0.1uFRF-12.2KRF-220K8C160.1uFR34.7KC18C21uF0.1uFC114.7uFC190.1uF1.8V7C20U1216R43R22.2KR6C74.7uFAGNDAGNDC81uF100C94.7uFAGND5OP374.7KJP1AGNDADCINA0321CON3ADCINB[0..7]ACINA02.2KR1-220KR1-10.1uFC22C210.1uF0.1uFC230.1uFC240.1uFC2540.1uF-15[min]C260.1uFC101uFHEADER 20X2AGNDC270.1uFC280.1uFDCINA0
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791113151719293133135U2IS61LV512161234CSSOWRGNDVCCHOLSCKSI87HOL6XSPICLKA54681012GNDNULLGNDGNDGNDTCK_RETTCKTDITDOTMSTRSTEMU0EMU191137121314TCKTDITDOTMSXXXX8910131415162930XXXXXX3132353637383940123433117TRSTEMU0EMU1LB冷祁：基于TMS320F2812的数据采集及FFT设计
附录B 引用的外文文献及其译文
原文
Data acquisition and Proeessing systems are used widely in many fields. The main work of the system is transforming the voltage paramter of outside analog signals to Digital data based on A/D convertor，include saving the result for after analyze and dispose . Technique of data acquisition is widely applied in industry control system. In produetion engineering，applying data acquisition device can implement acquisition. Surveillance and records of proeessing Parameters of field production，and offer information and meansforim proving quality of products and reducing cost.
Data acquisition and processing become an important technology of computer application,which mainly studys the collection,storage and processing of information data.Technique of data acquisition and processing is widely applied in industry control system.Discrete Fourier Transform is one of the main tools in digital signal processing field.But because of its large computational complexity,its application is limited.Afterward,with the appearance of Fast Fourier Transform,DFT is widely used in practical application.Because most chips of DSP can complete a multiplication and an addition in an instruction period,and they can provide the specialized instruction of FFT,it accelerates the speed of the FFT algotithm working on the chip of DSP.
The dissertation takes the 32 bits fixed-point digital signal processing processor TMS320F2812 of Texa Instrument Company as the core of signal acquisition and processing system.The data acquisition is completed by the 12 bits A/D convertor of TMS320F2812.and then do the signal processing on collected data.This dissertation points out the periphery circuit of data acquisition system.It compiles the procedures related to data acquisition system including main program of sampling,procedure of capture interrupt,program of ADC conversion sign-off interrupt,procedure of frequency measurement with the use of capture units and so on.
Based on the introductions of DSP principle, chip resources of TMS320F2812 and Code Composer Studio (CCS) of TMS320, the dissertation describes and analyses the acquisition module and sampling theory of data and the achievement of Fast Fourier Transform on TMS320F2812 in great detail. It also works on the application in data acquisition system of FFT which is the most classical application in digital signal processing.
The ADC module has 16 channels, configurable as two independent 8-channel modules to service event managers A and B. The two independent 8-channel modules can be cascaded to form a 16-channel module. Although there are multiple input channels and two sequencers, there is only one converter in the ADC module. Figure 1?1 shows the block diagram of the F2810, F2811, and F2812 ADC module. The two 8-channel modules have the capability to autosequence a series of conversions, each module has the choice of selecting any one of the respective eight channels available through an analog MUX. In the cascaded mode, the autosequencer functions as a single 16-channel sequencer. On each sequencer, once the conversion is complete, the selected channel value is stored in its respective ADCRESULT
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