www.pudn.com > EFA.rar > Change.c

#include  
#include "define.h" 
#include "Global.h" 
 
/********************************************************************* 
// 数据转换  
// 功能说明: 转换三种气体数据为显示值 
// 全局变量: Value_O2_Cur1，Value_N2O_Air_Cur1, 
             Value_O2_Cur2，Value_N2O_Air_Cur2, 
             O2_Column_Cur, N2O_Air_Column_Cur, 
             Qfg_Flow_Cur,  FiO2_Cur 
// 算法说明: 将采样缓冲区去除最大值最小值然后求平均值 
**********************************************************************/ 
void Value_Change(void) 
{ 
    unsigned int Temp_Max; 
    unsigned char i,j; 
    unsigned long temp; 
    if(Value_Change_En != 0x01) return; 
    Value_Change_En = 0x0; 
     
    _DINT(); 
     
    // 氧气转换 
    Temp_Max=0,temp=0; 
    for(i=0;i<23;i++) 
    for(j=0;j<23-i;j++) 
    { 
        if(Value_O2_Cur1[j] > Value_O2_Cur1[j+1]) 
        {  
            Temp_Max = Value_O2_Cur1[j]; 
            Value_O2_Cur1[j] = Value_O2_Cur1[j+1]; 
            Value_O2_Cur1[j+1] = Temp_Max; 
        } 
    } 
    for(i=2;i<22;i++) 
    temp += (unsigned long)Value_O2_Cur1[i]; 
                    
    temp = temp * 50 / 1843;                // /20*(2000/3686)                   
    Value_O2_Cur2 = Modify_Data(temp);      // 加入修正系数 
    if(Value_O2_Cur2 > 1200) Value_O2_Cur2 = 1200; 
         
    // 笑气或空气转换 
    Temp_Max=0,temp=0; 
    for(i=0;i<23;i++) 
    for(j=0;j<23-i;j++) 
    { 
        if(Value_N2O_Air_Cur1[j] > Value_N2O_Air_Cur1[j+1]) 
        {  
            Temp_Max = Value_N2O_Air_Cur1[j]; 
            Value_N2O_Air_Cur1[j] = Value_N2O_Air_Cur1[j+1]; 
            Value_N2O_Air_Cur1[j+1] = Temp_Max; 
        } 
    } 
    for(i=2;i<22;i++) 
    temp += (unsigned long)Value_N2O_Air_Cur1[i];                     
    temp = temp * 50 / 1843;                // /20*(2000/3686) 
    Value_N2O_Air_Cur2 = Modify_Data(temp); // 加入修正系数 
    if(Value_N2O_Air_Cur2 > 1200) Value_N2O_Air_Cur2 = 1200; 
     
    _EINT(); 
     
    // 计算光柱值 
    O2_Column_Cur = Column_Change(Value_O2_Cur2); 
    N2O_Air_Column_Cur = Column_Change(Value_N2O_Air_Cur2);  
     
    // 计算Qfg值 
    Qfg_Flow_Cur = Value_O2_Cur2 + Value_N2O_Air_Cur2; 
     
    // 计算FiO2值   // (O2*1000+N2O*209*LED3)/(O2*1000+N2O) 
    temp = ((unsigned long)Value_O2_Cur2*1000+(unsigned long)Value_N2O_Air_Cur2*209*(unsigned long)LED3)     
          /((unsigned long)Value_O2_Cur2+(unsigned long)Value_N2O_Air_Cur2);           
    if(((unsigned long)Value_O2_Cur2 + (unsigned long)Value_N2O_Air_Cur2) == 0) FiO2_Cur = 0; 
    else FiO2_Cur = (unsigned int)temp;    
    if(FiO2_Cur > 1000) FiO2_Cur = 1000; 
     
    // 串口发送缓冲数组填充 
    Buffer[1] = (unsigned char)(Value_O2_Cur2 >> 8); 
    Buffer[2] = (unsigned char)Value_O2_Cur2; 
     
    Buffer[4] = 0x3A*LED2+0xA3*LED3; 
    Buffer[5] = (unsigned char)(Value_N2O_Air_Cur2 >> 8); 
    Buffer[6] = (unsigned char)Value_N2O_Air_Cur2; 
     
    Buffer[8] = (unsigned char)(Qfg_Flow_Cur >> 8); 
    Buffer[9] = (unsigned char)Qfg_Flow_Cur; 
     
    Buffer[11] = (unsigned char)(FiO2_Cur >> 8); 
    Buffer[12] = (unsigned char)FiO2_Cur;                             
} 
 
/********************************************************************* 
* 补偿运算  
* 功能说明: y=0.0004*x^2+0.7462*x+52 
**********************************************************************/ 
unsigned int Modify_Data(unsigned long dat) 
{ 
    unsigned long temp1,temp2; 
     
    temp2 = dat; 
    if(temp2 < 10)  return 0; 
    else if((temp2 >= 10) && (temp2 < 250)) return (unsigned int)temp2; 
    else 
    { 
        temp1 = temp2*temp2*0.0004 + temp2*0.7462 + 52; 
        return (unsigned int)temp1; 
    } 
} 
 
/********************************************************************* 
* 光柱值转换  
* 功能说明: 将LED显示值转换为闪烁的光柱值 
* dat: 显示值 
* 返回值：光柱值 
**********************************************************************/ 
unsigned char Column_Change(unsigned int dat) 
{ 
    unsigned int temp1; 
    unsigned char temp2; 
     
    temp1 = dat; 
    if(temp1 >= 700)  
        temp2 = (unsigned char)(temp1 / 100) + 18; 
    else if((temp1 < 700) && (temp1 >= 200))  
        temp2 = (unsigned char)((temp1*2) / 100) + 11; 
    else if((temp1 < 200) && (temp1 >= 120))  
        temp2 = (unsigned char)((temp1*5) / 100) + 5; 
    else if((temp1 < 120) && (temp1 >= 90))  
        temp2 = (unsigned char)(temp1 / 15) + 3; 
    else  
        temp2 = (unsigned char)(temp1 / 10); 
    return temp2; 
} 
 
/********************************************************************* 
* 状态检测          
* 功能说明: 检测三个灯的状态及控制两个阀的开合  
**********************************************************************/ 
void Status_Check(void) 
{ 
    if(Status_Check_En != 0x01) return; 
    Status_Check_En = 0x00; 
     
    // 笑气、空气气道切换及指示灯切换 
    if(key == ON)                
    { 
        key = OFF; 
        LED2 ^= BIT0; 
        LED3 ^= BIT0; 
        P1OUT ^= BIT0; 
        N2O_Air_Column_Pre = N2O_Air_Column_Cur + 1; 
        Display_N2O_Air_Column(N2O_Air_Column_Cur); 
    } 
     
    // 氧笑联动 
    if(LED1 == ON && FiO2_Cur > 260) 
    { 
        LED1 = OFF; 
        P1OUT &= ~BIT1;             // 笑气阀打开    
        O2_Column_Pre = O2_Column_Cur + 1; 
        Display_O2_Column(O2_Column_Cur);                
    } 
    else if(LED1 == OFF && FiO2_Cur < 250) 
    { 
        LED1 = ON;                  // 氧压过低报警 
        P1OUT |= BIT1;              // 笑气阀关闭 
        O2_Column_Pre = O2_Column_Cur + 1; 
        Display_O2_Column(O2_Column_Cur);                
    }   
}