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.


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

图4。安装在C5515 EVM的ECG前端外形图

图5。ECG 前端方框图

图6。DSP软件架构图
前端板电路图

图7。前端板电路图：ECG_I_II

图8。前端板电路图：ECG_LEAD_V1_V2_V3