pwtt_aigorithm.c

生物医学工程中对于ECG信号

      free(der_2_min);
      free(threshold2);
      free(dfr_tenpoint_max);
,return dfr_position;
}



int compute_pwtt(int *dfr_position,int*dfq_position,int num3)        /* pwtt子函数代码！*/
{
     int z=num3/sf;
, int i;                                                 /* 定义一个循环变量i！ */ 
     int count=0;                                           /* 定义一个实时跟踪记录ptt累加次数的计数器count！*/ 
     int pwtt=0;                                            /* 注意pwtt为整数！ */ 
  
    if(dfr_position[0]<dfq_position[0])                     /* dfr_position[0]在左边首次出现！ */
      {
         for(i=0;i<z;i++)                                   /* 注意最多有z个峰谷整数对：(dfr_position[i],dfq_position[i]) */ 
            {
              pwtt=pwtt+(dfq_position[i]-dfr_position[i]);
              count++;                                      /* 利用计数器count实时跟踪记录pwtt累加次数！*/ 
            }
         pwtt=pwtt/count;
      }
    else                                                    /* dfq_position[0]在左边首次出现！ */                                                   
      {
         for(i=0;i<z-1;i++)                                 /* 注意最多有z-1个峰谷整数对：(dfr_position[i],dfq_position[i]) */ 
            {
              pwtt=pwtt+(dfq_position[i+1]-dfr_position[i]);
              count++;                                      /* 利用计数器count实时跟踪记录pwtt累加次数！*/ 
            }
         pwtt=pwtt/count;
      }
    return pwtt;
}

 
void main()
{
	  double ecg[num]={0.0  };
	  double ppg[num]={0.0  };
	double ecg[num]={ 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};
    double ppg[num]={ 0.244,0.239,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.239,0.239,0.234,0.234,0.234,0.234,0.239,0.239,0.239,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.225,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.234,0.234,0.234,0.234,0.229,0.229,0.229,0.234,0.234,0.234,0.234,0.239,0.239,0.239,0.239,0.234,0.234,0.234,0.239,0.239,0.239,0.244,0.244,0.244,0.239,0.244,0.239,0.244,0.244,0.244,0.244,0.249,0.249,0.249,0.249,0.244,0.249,0.249,0.249,0.249,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.264,0.264,0.264,0.264,0.264,0.264,0.259,0.264,0.264,0.264,0.264,0.264,0.269,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.269,0.269,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.264,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.234,0.234,0.234,0.234,0.229,0.234,0.234,0.234,0.234,0.229,0.229,0.229,0.229,0.225,0.225,0.225,0.225,0.225,0.225,0.225,0.225,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.215,0.215,0.215,0.215,0.21,0.21,0.215,0.215,0.215,0.215,0.21,0.21,0.21,0.205,0.205,0.205,0.205,0.21,0.21,0.205,0.205,0.2,0.2,0.2,0.2,0.2,0.2,0.2,0.205,0.2,0.2,0.2,0.195,0.195,0.195,0.195,0.195,0.195,0.195,0.195,0.195,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.181,0.181,0.181,0.181,0.181,0.186,0.186,0.186,0.181,0.181,0.181,0.176,0.176,0.176,0.181,0.181,0.181,0.181,0.181,0.176,0.176,0.176,0.176,0.176,0.176,0.176,0.176,0.176,0.176,0.176,0.171,0.171,0.171,0.171,0.171,0.171,0.176,0.171,0.171,0.171,0.171,0.166,0.166,0.166,0.171,0.171,0.171,0.171,0.171,0.166,0.166,0.166,0.166,0.166,0.166,0.166,0.166,0.166,0.166,0.166,0.161,0.161,0.161,0.161,0.161,0.161,0.166,0.166,0.161,0.161,0.161,0.161,0.161,0.161,0.161,0.161,0.161,0.161,0.161,0.161,0.156,0.156,0.156,0.156,0.156,0.161,0.156,0.156,0.156,0.156,0.156,0.156,0.151,0.156,0.156,0.156,0.156,0.156,0.156,0.156,0.151,0.151,0.151,0.151,0.156,0.156,0.156,0.156,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.156,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.146,0.146,0.146,0.146,0.146,0.151,0.151,0.151,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.142,0.142,0.142,0.146,0.146,0.146,0.146,0.146,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.137,0.142,0.137,0.142,0.142,0.142,0.142,0.142,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.132,0.132,0.132,0.132,0.137,0.137,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.122,0.122,0.122,0.122,0.122,0.127,0.127,0.122,0.122,0.122,0.117,0.117,0.117,0.117,0.117,0.122,0.122,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.098,0.098,0.098,0.098,0.098,0.098,0.098,0.098,0.098,0.093,0.093,0.093,0.093,0.093,0.093,0.093,0.098,0.098,0.093,0.093,0.093,0.088,0.088,0.088,0.093,0.093,0.093,0.093,0.088,0.088,0.088,0.083,0.083,0.083,0.088,0.088,0.088,0.088,0.088,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.078,0.078,0.078,0.078,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.088,0.088,0.088,0.088,0.088,0.088,0.088,0.088,0.093,0.093,0.098,0.098,0.103,0.103,0.103,0.103,0.107,0.107,0.112,0.117,0.117,0.122,0.127,0.127,0.127,0.132,0.132,0.137,0.142,0.146,0.151,0.151,0.156,0.161,0.161,0.166,0.166,0.171,0.176,0.181,0.186,0.186,0.19,0.19,0.195,0.195,0.2,0.205,0.205,0.21,0.215,0.22,0.225,0.225,0.229,0.229,0.234,0.234,0.239,0.244,0.249,0.254,0.254,0.259,0.259,0.259,0.264,0.264,0.269,0.269,0.273,0.278,0.278,0.283,0.283,0.283,0.283,0.288,0.288,0.293,0.293,0.298,0.298,0.298,0.298,0.298,0.303,0.303,0.303,0.308,0.308,0.308,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.317,0.317,0.317,0.317,0.312,0.312,0.312,0.312,0.312,0.317,0.317,0.317,0.317,0.317,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.298,0.298,0.298,0.293,0.293,0.293,0.293,0.293,0.293,0.293,0.293,0.288,0.288,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.278,0.278,0.278,0.273,0.278,0.278,0.278,0.273,0.273,0.273,0.269,0.269,0.269,0.269,0.269,0.269,0.269,0.269,0.264,0.264,0.264,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.249,0.249,0.249,0.244,0.244,0.244,0.244,0.244,0.249,0.244,0.244,0.244,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.234,0.229,0.229,0.229,0.225,0.225,0.225,0.229,0.229,0.229,0.225,0.225,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.215,0.215,0.215,0.22,0.22,0.22,0.22,0.22,0.22,0.215,0.215,0.215,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.215,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.22,0.215,0.22,0.22,0.22,0.225,0.225,0.225,0.225,0.225,0.225,0.225,0.225,0.225,0.229,0.229,0.229,0.234,0.234,0.229,0.229,0.229,0.229,0.234,0.234,0.234,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.239,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.249,0.249,0.249,0.249,0.254,0.254,0.254,0.254,0.249,0.249,0.249,0.254,0.254,0.259,0.259,0.259,0.259,0.259,0.254,0.254,0.254,0.259,0.259,0.259,0.259,0.264,0.259,0.259,0.259,0.259,0.259,0.259,0.259,0.264,0.264,0.264,0.264,0.264,0.259,0.259,0.259,0.259,0.264,0.264,0.264,0.264,0.264,0.264,0.259,0.259,0.259,0.259,0.264,0.264,0.264,0.264,0.264,0.264,0.259,0.259,0.259,0.259,0.259,0.259,0.264,0.264,0.259,0.259,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.254,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.249,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.244,0.239,0.239,0.234,0.234,0.234,0.234,0.234,0.239,0.234,0.234,0.234,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.229,0.225,0.225,0.225,0.22,0.22,0.22,0.22,0.22,0.225,0.22,0.22,0.22,0.215,0.215,0.215,0.215,0.215,0.215,0.215,0.215,0.215,0.21,0.21,0.205,0.205,0.205,0.205,0.21,0.21,0.21,0.205,0.205,0.205,0.2,0.2,0.2,0.2,0.2,0.2,0.2,0.2,0.2,0.195,0.195,0.195,0.195,0.195,0.195,0.195,0.195,0.195,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.19,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.186,0.181,0.181,0.176,0.176,0.176,0.176,0.176,0.181,0.176,0.176,0.176,0.176,0.171,0.171,0.171,0.171,0.176,0.176,0.171,0.176,0.171,0.171,0.171,0.166,0.166,0.171,0.171,0.171,0.166,0.166,0.166,0.161,0.161,0.161,0.161,0.161,0.166,0.166,0.161,0.161,0.161,0.156,0.156,0.156,0.156,0.156,0.161,0.161,0.161,0.161,0.156,0.156,0.156,0.156,0.156,0.156,0.156,0.156,0.156,0.156,0.156,0.151,0.151,0.151,0.151,0.151,0.151,0.156,0.156,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.156,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.151,0.146,0.146,0.146,0.146,0.146,0.151,0.151,0.151,0.151,0.151,0.146,0.146,0.146,0.146,0.146,0.146,0.146,0.151,0.146,0.146,0.146,0.146,0.146,0.142,0.146,0.146,0.146,0.146,0.146,0.142,0.142,0.142,0.142,0.142,0.142,0.146,0.146,0.146,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.142,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.137,0.132,0.132,0.132,0.132,0.137,0.137,0.137,0.137,0.137,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.132,0.127,0.127,0.127,0.132,0.132,0.132,0.132,0.132,0.132,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.132,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.127,0.122,0.122,0.127,0.127,0.127,0.127,0.127,0.122,0.122,0.122,0.122,0.122,0.122,0.122,0.122,0.122,0.122,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.117,0.112,0.112,0.112,0.112,0.112,0.117,0.117,0.117,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.112,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.107,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.103,0.098,0.098,0.098,0.098,0.098,0.098,0.098,0.098,0.098,0.098,0.093,0.093,0.093,0.093,0.093,0.093,0.093,0.093,0.093,0.093,0.088,0.088,0.088,0.088,0.088,0.088,0.088,0.088,0.088,0.088,0.088,0.083,0.083,0.083,0.083,0.088,0.088,0.088,0.083,0.083,0.078,0.078,0.078,0.078,0.078,0.083,0.083,0.083,0.083,0.078,0.078,0.078,0.078,0.078,0.078,0.078,0.078,0.078,0.078,0.073,0.073,0.073,0.073,0.073,0.073,0.073,0.078,0.078,0.073,0.073,0.073,0.073,0.068,0.073,0.073,0.073,0.073,0.073,0.073,0.073,0.073,0.073,0.073,0.073,0.078,0.078,0.078,0.078,0.083,0.083,0.083,0.083,0.083,0.083,0.083,0.088,0.088,0.093,0.093,0.093,0.093,0.093,0.098,0.098,0.103,0.107,0.112,0.112,0.117,0.117,0.122,0.122,0.127,0.127,0.132,0.137,0.142,0.146,0.151,0.151,0.156,0.156,0.161,0.166,0.171,0.176,0.181,0.186,0.186,0.19,0.195,0.195,0.2,0.205,0.21,0.215,0.22,0.225,0.229,0.229,0.234,0.234,0.239,0.244,0.249,0.254,0.254,0.259,0.264,0.264,0.269,0.269,0.273,0.278,0.283,0.288,0.288,0.293,0.298,0.298,0.298,0.303,0.303,0.308,0.308,0.312,0.317,0.322,0.322,0.322,0.322,0.327,0.327,0.327,0.332,0.332,0.337,0.337,0.337,0.337,0.342,0.342,0.342,0.342,0.347,0.347,0.347,0.347,0.347,0.347,0.347,0.347,0.347,0.352,0.352,0.352,0.352,0.356,0.356,0.352,0.352,0.352,0.352,0.352,0.356,0.356,0.356,0.356,0.356,0.356,0.352,0.352,0.352,0.352,0.352,0.352,0.352,0.352,0.352,0.352,0.347,0.347,0.347,0.347,0.347,0.347,0.347,0.347,0.347,0.342,0.342,0.342,0.337,0.337,0.337,0.337,0.337,0.337,0.337,0.337,0.337,0.332,0.332,0.332,0.332,0.332,0.332,0.332,0.332,0.332,0.327,0.327,0.327,0.327,0.327,0.327,0.327,0.327,0.327,0.322,0.322,0.322,0.317,0.317,0.317,0.322,0.322,0.322,0.322,0.317,0.317,0.317,0.312,0.312,0.312,0.312,0.317,0.312,0.312,0.312,0.312,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.298,0.298,0.298,0.298,0.298,0.303,0.303,0.303,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.293,0.293,0.293,0.293,0.293,0.293,0.293,0.293,0.293,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.283,0.283,0.283,0.283,0.283,0.288,0.288,0.288,0.288,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.288,0.288,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.288,0.288,0.283,0.283,0.283,0.283,0.283,0.283,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.288,0.293,0.293,0.293,0.293,0.288,0.288,0.288,0.288,0.293,0.293,0.293,0.293,0.298,0.293,0.293,0.293,0.293,0.298,0.298,0.298,0.303,0.303,0.303,0.303,0.303,0.298,0.303,0.303,0.303,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.312,0.312,0.312,0.312,0.312,0.308,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.317,0.317,0.317,0.312,0.312,0.312,0.312,0.312,0.312,0.317,0.317,0.317,0.317,0.317,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.317,0.312,0.312,0.312,0.312,0.308,0.312,0.312,0.312,0.312,0.312,0.312,0.312,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.308,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.303,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.298,0.293,0.293,0.293,0.288,0.288,0.288,0.288,0.288,0.293,0.288,0.288,0.288,0.288,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.283,0.278,0.278,0.278,0.278,0.278,0.283,0.278,0.278,0.278,0.273,0.273,0.273,0.273,0.273,0.273,0.273,0.273,0.273,0.269};
  int z=num/sf;
  int *dfr_position,*dfq_position;
  int pwtt;
      dfr_position=(int*)malloc(sizeof(int)*z);
      dfq_position=(int*)malloc(sizeof(int)*z);
      dfr_position= find_Rpeak(ecg,num);
      dfq_position= find_Qtrough(ppg,num);
  pwtt=compute_pwtt(dfr_position,dfq_position,num);
  printf("pwtt=%d",pwtt);
}