void DMA_IRQHandler(void)
{	
    /*进行采样的叠加*/	
	if (ADC_count < 160)  
	{
	 	ADC_ConvertedValue = ADC_ConvertedValue + ADC1->DR;
	 	ADC_count++;
	}
 	else
	{	 	
	 	ADC_Cmd(ADC1, DISABLE);
	 	if (DS_count_16 < 16)
	 	{
	  		Value[DS_count_16] = ADC_ConvertedValue;
	  		DS_count_16++;
	 	}
      /*进行双波长频分调制的数字解调*/
		if (DS_count_16 == 16)//Down sampling 16 
	 	{	
	 	DS_count_16 = 0;
		Slide0_ave=(-Value[0]+Value[1]-Value[2]+Value[3]-Value[4]+Value[5]-Value[6]+Value[7]-Value[8]+Value[9]-Value[10]+Value[11]-Value[12]+Value[13]-Value[14]+Value[15]);
		Slide1_ave=(-Value[0]-Value[1]+Value[2]+Value[3]-Value[4]-Value[5]+Value[6]+Value[7]-Value[8]-Value[9]+Value[10]+Value[11]-Value[12]-Value[13]+Value[14]+Value[15]);
		acdc_red[acdc_count] = Slide0_ave;
		acdc_ired[acdc_count] = Slide1_ave;
		acdc_count++;
		if(acdc_count > 299)
			{
			acdc_count = 0;
			}
		if(DS_count_32 < 4)
			{
			Signal_ds1[DS_count_32] = Slide0_ave;
			Signal_ds2[DS_count_32] = Slide1_ave;
	   		DS_count_32++;
			}
	 	if(DS_count_32 == 4)//Down sampling 32
	  		{										
	  		DS_count_32 = 0;
			DS_1 = -(Signal_ds1[0]+Signal_ds1[1]+Signal_ds1[2]+Signal_ds1[3])>>2;
	    		DS_2 = -(Signal_ds2[0]+Signal_ds2[1]+Signal_ds2[2]+Signal_ds2[3])>>2;
	    		DS_1_dac = DS_1;
			DS_2_dac = DS_2;
			}
		}
	}
}