基于TMS320C5515设计的心电图(ECG)MDK开发技术
• Embedded JTAG controller
• Color LCD display
• Keys (user switches)
The EVM operates from a + 5 V external power supply or battery and is designed to work with TI’s Code Composer Studio™ integrated development environment (IDE). Code Composer Studio communicates with the EVM board through the external emulator, or on-board emulator.
2)ECGFront-End Board
Figure 3 shows theECGfront-end board. The potentials captured by the electrodes are passed through
the defibrillator protection (DP) circuit in theECGfront-end board. Then, the front end board derives 8 out
of 12 ECG leads and provides the digital input to the DSP subsystem. The front-end board can be
interfaced with the EVM board through a universal front-end connector. The front-end board is interfaced
with and powered by the C5515 EVM board through the universal front-end connector by using I2C and
I2S interfaces.
The 16 channel analog-to-digital converter (ADC) (ADS1258) on the front-end board is configured for 500
Hz sampling with 24-bit data resolution. ADC is interfaced with the C5515 using the SPI bus.
![](http://m.amcfsurvey.com/editerupload/fetch/20130926/173251_2_0.jpg)
图3。ECG板外形图
3)ECG Cable
The ECG cable consists of four limb and six chest electrodes. This cable is connected to the front-end board through the DB15 connector. The ECG electrodes pick up ECG signals from the ECG simulator/patient and send them to the ECG front-end board; an off-the-shelf ECG cable is used. For more details regarding ECG cable
![](http://m.amcfsurvey.com/editerupload/fetch/20130926/173251_2_1.jpg)
图4。安装在C5515 EVM的ECG前端外形图
![](http://m.amcfsurvey.com/editerupload/fetch/20130926/173251_2_2.jpg)
图5。ECG 前端方框图
![](http://m.amcfsurvey.com/editerupload/fetch/20130926/173251_2_3.jpg)
图6。DSP软件架构图
前端板电路图
![](http://m.amcfsurvey.com/editerupload/fetch/20130926/173251_2_4.jpg)
图7。前端板电路图:ECG_I_II
![](http://m.amcfsurvey.com/editerupload/fetch/20130926/173251_2_5.jpg)
图8。前端板电路图:ECG_LEAD_V1_V2_V3
![](http://m.amcfsurvey.com/editerupload/fetch/20130926/173251_2_6.jpg)
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