热电偶转换C语言程序教学文案.doc

热电偶转换C语言程序

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#include<string.h>
#include <math.h>
#define ERROR -100
#define uchar unsigned char
float tmp = 0;
// S型温度转电压系数
float code Var_TtoV_S[3][9]=
{
{0, 5.40313309/1e3, 1.25934290/1e5, -2.32477969/1e8, 3.22028823/1e11,
-3.31465196/1e14, 2.55744252/1e17, -1.25068871/1e20, 2.71443176/1e24},

{1.32900444, 3.34509311/1e3, 6.54805193/1e6, -1.64856259/1e9,
1.29989605/1e14, 0, 0, 0, 0},

{1.46628233e2, -2.58430517/1e1, 1.63693575/1e4, -3.30439047/1e8,
-9.43223691/1e15, 0, 0, 0, 0}
};
// R型温度转电压系数
float code Var_TtoV_R[3][10]=
{
{0, 5.28961730/1e3, 1.39166590/1e5, -2.38855693/1e8, 3.56916001/1e11,
-4.62347666/1e14, 5.00777441/1e17, -3.73105886/1e20, 1.57716482/1e23,
-2.81038625/1e27},
{2.95157925, -2.52061251/1e3, 1.59564502/1e5, -7.64085948/1e9,
2.05305291/1e12, -2.93359668/1e16},
{1.52232118e2, -2.68819889/1e1, 1.71280280/1e4, -3.45895706/1e8,
-9.34633971/1e15}
};
// B型温度转电压系数
float code Var_TtoV_B[2][9]=
{
{0, -2.46508183/1e4, 5.90404212/1e6, -1.32579316/1e9, 1.56682919/1e12,
-1.69445292/1e15,6.29903471/1e19},
{-3.89381686, 2.85717475/1e2, -8.48851048/1e5, 1.57852802/1e7,
-1.68353449/1e10, 1.11097940/1e13, -4.45154310/1e17, 9.89756408/1e21,
-9.37913303/1e25}
};
// K型温度转电压系数
float code Var_TtoV_K[3][11]=
{
{0, 3.9450128025/1e2, 2.3622373598/1e5, -3.2858906784/1e7, -4.9904828777/1e9,
-6.7509059173/1e11, -5.7410327428/1e13, -3.1088872894/1e15,
-1.0451609365/1e17, -1.9889266878/1e20, -1.6322697486/1e23},
{-1.7600413686/1e2, 3.8921204975/1e2, 1.8558770032/1e5, -9.9457592874/1e8,
3.1840945719/1e10, -5.6072844889/1e13, 5.6075059059/1e16,
-3.2020720003/1e19, 9.7151147152/1e23, -1.2104721275/1e26},
{1.185976/1e1,-1.183432/1e4}
};
// N型温度转电压系数
float code Var_TtoV_N[2][11]=
{
{0, 2.61591060/1e2, 1.09574842/1e5, -9.38411116/1e8, -4.64120398/1e11,
-2.63033577/1e12, -2.26534380/1e14, -7.60893008/1e17, -9.34196678/1e20},
{0, 2.59293946/1e2, 1.57101419/1e5, 4.38256272/1e8, -2.52611698/1e10,
6.43118193/1e13, -1.00634715/1e15, 9.97453390/1e19,-6.08632456/1e22,
2.08492293/1e25, -3.06821962/1e29}
};
// E型温度转电压系数
float code Var_TtoV_E[2][14]=
{
{0, 5.8665508708/1e2, 4.5410977124/1e5, -7.7998048686/1e7,
-2.5800160843/1e8, -5.9452583057/1e10, -9.3214058667/1e12,
-1.0287605534/1e13, -8.0370123621/1e16, -4.3979497391/1e18,
-1.6414776355/1e20, -3.9673619516/1e23, -5.5827328721/1e26,
-3.4657842013/1e29},
{0, 5.8665508710/1e2, 4.5032275582/1e5, 2.8908407212/1e8,
-3.3056896652/1e10, 6.50244033/1e13, -1.9197495594/1e16, -1.2536600497/1e18,
2.1489217569/1e21,-1.4388041782/1e24,3.5960899481/1e28}
};
// J型温度转电压系数
float code Var_TtoV_J[2][9]=
{
{0, 5.03811878/1e2, 3.04758370/1e5, -8.56810657/1e8, 1.32281953/1e10,
-1.70529583/1e13, 2.09480907/1e16, -1.25383953/1e19, 1.56317256/1e23},
{2.96456257e2, -1.49761278, 3.17871039/1e3, -3.18476867/1e6,
1.57208190/1e9, -3.06913691/1e13}
};
// T型温度转电压系数
float code Var_TtoV_T[2][15]=
{
{0, 3.8748106364/1e2, 4.4194434347/1e5, 1.1844323105/1e7,
2.0032973554/1e8, 9.0138019559/1e10, 2.2651156593/1e11,
3.6071154205/1e13, 3.8493939883/1e15, 2.8213521925/1e17,
1.4251594779/1e19, 4.8768662286/1e22, 1.0795539270/1e24,
1.3945027062/1e27, 7.9795153927/1e31},
{0, 3.8748106364/1e2, 3.3292227880/1e5, 2.0618243404/1e7,
-2.1882256846/1e9,1.0996880928/1e11,-3.0815758772/1e14,
4.5479135290/1e17, -2.7512901673/1e20}
};
//-----------------------------------
// S型电压转温度系数
float code Var_VtoT_S[4][10]=
{
{0, 1.8494946e2, -8.0050406e1, 1.0223743e2, -1.5224859e2, 1.8882134e2,
-1.5908594e2, 8.2302788e1, -2.3418194e1, 2.7978626},
{1.2915072e1, 1.4662989e2, -1.5347134e1, 3.1459460, -4.1632578/1e1,
3.1879638/1e2, -1.2916375/1e3, 2.1834751/1e5, -1.4473795/1e7,
8.2112721/1e9},
{-8.0878011e1, 1.6215731e2, -8.5368695, 4.7196870/1e1, -1.4416937/1e2,
2.0816189/1e4},
{5.3338751e4, -1.2358923e4, 1.0926576e3, -4.2656937e1, 6.2472054/1e1}
};
// R型电压转温度系数
float code Var_VtoT_R[4][11]=
{
{0, 1.8891380e2, -9.3835290e1, 1.3068619e2, -2.2703580e2, 3.5145659e2,
-3.8953900e2, 2.8239471e2, -1.2607281e2, 3.1353611e1, -3.3187769},
{1.3345845e1, 1.4726446e2, -1.8440248e1, 4.0311297, -6.2494284/1e1,
6.4684120/1e2, -4.4587504/1e3, 1.9947101/1e4, -5.3134018/1e6,
6.4819762/1e8},
{-8.1995994e1, 1.5539620e2, -8.3421977, 4.2794335/1e1,
-1.1915780/1e2, 1.4922901/1e4},
{3.4061778e4, -7.0237292e3, 5.5829038e2, -1.9523946e1, 2.5607402/1e1}
};
// B型电压转温度系数
float code Var_VtoT_B[2][9]=
{
{9.8423321e1, 6.9971500e2, -8.4765304e2, 1.0052644e3, -8.3345952e2,
4.5508542e2, -1.5523037e2, 2.9886750e1, -2.4742860},
{2.1315071e2, 2.8510504e2, -5.2742887e1, 9.9160804, -1.2965303,
1.1195870/1e1, -6.0625199/1e3, 1.8661696/1e4, -2.4878585/1e6}
};
// K型电压转温度系数
float code Var_VtoT_K[3][10]=
{
{0, 2.5173462e1, -1.1662878, -1.0833638, -8.9773540/1e1, -3.7342377/1e1,
-8.6632643/1e2, -1.0450598/1e2, -5.1920577/1e4},
{0, 2.508355e1, 7.860106/1e2, -2.503131/1e1, 8.315270/1e2,
-1.228034/1e2, 9.804036/1e4, -4.413030/1e5, 1.057734/1e6, -1.052755/1e8},
{-1.318058e2, 4.830222e1, -1.646031, 5.464731/1e2, -9.650715/1e4,
8.802193/1e6, -3.110810/1e8}
};
// N型电压转温度系数
float code Var_VtoT_N[3][10]=
{
{0, 3.8436847e1, 1.1010485, 5.2229312, 7.2060525, 5.8488586,
2.7754916, 7.7075166/1e1, 1.1582665/1e1, 7.3138868/1e3},
{0, 3.86896e1, -1.08267, 4.70205/1e2, -2.12169/1e6, -1.17272/1e4,
5.39280/1e6, -7.98156/1e8},
{1.972485e1, 3.300943e1, -3.915159/1e1, 9.855391/1e3,
-1.274371/1e4, 7.767022/1e7}
};
// E型电压转温度系数
float code Var_VtoT_E[2][10]=
{
{0, 1.6977288e1, -4.3514970/1e1, -1.5859697/1e1, -9.2502871/1e2,
-2.6084314/1e2, -4.1360199/1e3, -3.4034030/1e4, -1.1564890/1e5},
{0, 1.7057035e1, -2.3301759/1e1, 6.5435585/1e3, -7.3562749/1e5,
-1.7896001/1e6, 8.4036165/1e8, -1.3735879/1e9,
1.0629823/1e11, -3.2447087/1e14}
};
// J型电压转温度系数
float code Var_VtoT_J[3][9]=
{
{0, 1.9528268e1, -1.2286185, -1.0752178, -5.9086933/1e1,
-1.7256713/1e1, -2.8131513/1e2, -2.3963370/1e3, -8.3823321/1e5},
{0, 1.978425e1, -2.001204/1e1, 1.036969/1e2, -2.549687/1e4,
3.585153/1e6, -5.344285/1e8, 5.099890/1e10},
{-3.1135819e3, 3.0054368e2, -9.9477323, 1.7027663/1e1,
-1.4303347/1e3, 4.7388608/1e6}
};
// T型电压转温度系数
float code Var_VtoT_T[2][8]=
{
{0, 2.5949192e1, -2.1316967/1e1, 7.9018692/1e1, 4.2527777/1e1,
1.3304473/1e1, 2.0241446/1e2, 1.2668171/1e3},
{0, 2.592800e1, -7.602961/1e1, 4.637791/1e2, -2.165394/1e3,
6.048144/1e5, -7.293422/1e7}
};
/******************************************************************************
*函数描述:S型 温度转电压(冷端温度为0)
温度范围：-50C° ~ +1760C°
毫伏范围：-0.2355 ~ +18.6092
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float S_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < -50) || (T > 1760.0))
{
return ERROR;
}
else if((T >= -50) && (T < 1064.18))
{
value = Var_TtoV_S[0][8];

for(i = 8; i > 0; i--)
value = T * value + Var_TtoV_S[0][i-1];
}
else if(T >= 1064.18 && T < 1664.5)
{
value = Var_TtoV_S[1][4];

for(i = 4;i > 0;i--)
value = T * value + Var_TtoV_S[1][i-1];
}
else // if(T >= 1664.5 && T <= 1768.1)
{
value = Var_TtoV_S[2][4];

for(i=4; i > 0; i--)
value=T * value + Var_TtoV_S[2][i-1];
}

return value;
}
/******************************************************************************
*函数描述:R型 温度转电压(冷端温度为0)
温度范围：-50C° ~ +1760C°
毫伏范围：-0.2264 ~ +21.0026
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float R_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < -50) || (T > 1760.0))
{
return ERROR;
}
else if(T >= -50 && T < 1064.18)
{
value = Var_TtoV_R[0][9];

for(i = 9; i > 0; i--)
value = T * value + Var_TtoV_R[0][i-1];
}
else if(T >= 1064.18 && T < 1664.5)
{
value = Var_TtoV_R[1][5];

for(i = 5; i > 0; i--)
value = T * value + Var_TtoV_R[1][i-1];
}
else //if(T >= 1664.5 && T <= 1768.1)
{
value = Var_TtoV_R[2][4];

for(i = 4; i > 0; i--)
value = T * value + Var_TtoV_R[2][i-1];
}

return value;
}
/******************************************************************************
*函数描述:B型 温度转电压(冷端温度为0)
温度范围：+100C° ~ +1820C°
毫伏范围：-0.0332 ~ +13.8202
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float B_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < 0) || (T > 1820.0))
{
return ERROR;
}
else if(T < 100)
{
value = 0;
}
else if(T >= 100 && T < 630.615)
{
value = Var_TtoV_B[0][6];

for(i = 6; i > 0; i--)
value = T * value + Var_TtoV_B[0][i-1];
}
else // ifif(T >= 630.615 && T <= 1820)
{
value = Var_TtoV_B[1][8];

for(i = 8; i > 0; i--)
value = T * value + Var_TtoV_B[1][i-1];
}

return value;
}
/******************************************************************************
*函数描述:K型 温度转电压(冷端温度为0)
温度范围：-270C° ~ +1370C°
毫伏范围：-6.4577 ~ +54.8185
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float K_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < -270) || (T > 1370.0))
{
return ERROR;
}
else if(T < 0)
{
value = Var_TtoV_K[0][10];

for(i = 10; i > 0; i--)
value = T * value + Var_TtoV_K[0][i-1];

value += Var_TtoV_K[2][0] * exp(Var_TtoV_K[2][1]*(T - 126.9686)*(T - 126.9686));
}
else // if(T >= 0 && T <= 1372)
{
value = Var_TtoV_K[1][9];

for(i = 9; i > 0; i--)
value = T * value + Var_TtoV_K[1][i-1];

value += Var_TtoV_K[2][0] * exp(Var_TtoV_K[2][1]*(T-126.9686)*(T-126.9686));
}

return value;
}
/******************************************************************************
*函数描述:N型 温度转电压(冷端温度为0)
温度范围：-270C° ~ +1300C°
毫伏范围：-4.3451 ~ +47.5125
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float N_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < -270) || (T > 1300.0))
{
return ERROR;
}
else if(T < 0)
{
value = Var_TtoV_N[0][8];

for(i = 8; i > 0; i--)
value = T * value + Var_TtoV_N[0][i-1];
}
else
{
value = Var_TtoV_N[1][10];

for(i = 10; i > 0; i--)
value = T * value + Var_TtoV_N[1][i-1];
}

return value;
}
/******************************************************************************
*函数描述:E型 温度转电压(冷端温度为0)
温度范围：-270C° ~ +1000C°
毫伏范围：-9.8294 ~ +76.3279
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float E_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < -270) || (T > 1000.0))
{
return ERROR;
}
else if(T < 0)
{
value = Var_TtoV_E[0][13];

for(i = 13; i > 0; i--)
value = T * value + Var_TtoV_E[0][i-1];
}
else
{
value = Var_TtoV_E[1][10];

for(i = 10; i > 0; i--)
value = T * value + Var_TtoV_E[1][i-1];
}

return value;
}
/******************************************************************************
*函数描述:J型 温度转电压(冷端温度为0)
温度范围：-210C° ~ +1200C°
毫伏范围：-8.0953 ~ +69.5531
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float J_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < -210) || (T > 1200.0))
{
return ERROR;
}
else if(T >= -210 && T < 760)
{
value = Var_TtoV_J[0][8];

for(i = 8; i > 0; i--)
value = T * value + Var_TtoV_J[0][i-1];
}
else
{
value = Var_TtoV_J[1][5];

for(i = 5; i > 0; i--)
value = T * value + Var_TtoV_J[1][i-1];
}

return value;
}
/******************************************************************************
*函数描述:T型 温度转电压(冷端温度为0)
温度范围：-270C° ~ +400C°
毫伏范围：-6.2748 ~ +20.8719
*输入变量:T 温度
*返回变量:value 毫伏
******************************************************************************/
float T_TtoV(float T)
{
uchar i = 0;
float value = 0;

if((T < -270) || (T > 400.0))
{
return ERROR;
}
else if(T < 0)
{
value = Var_TtoV_T[0][14];

for(i = 14; i > 0; i--)
value = T * value + Var_TtoV_T[0][i-1];
}
else
{
value = Var_TtoV_T[1][8];

for(i = 8; i > 0;i--)
value = T * value + Var_TtoV_T[1][i-1];
}

return value;
}

/******************************************************************************
*函数描述:S型 电压转温度(冷端温度为0)
毫伏范围：-0.236 ~ +18.609
温度范围：-50.091C° ~ +1759.965C°
*输入变量:mV 毫伏
*返回变量:value 温度
******************************************************************************/
float S_VtoT(float mV)
{
uchar i = 0;
float value = 0;

if(mV >= -0.245 && mV < 1.874)
{
value = Var_VtoT_S[0][9];

for(i = 9; i > 0; i--)
value = mV * value + Var_VtoT_S[0][i-1];
}
else if(mV >= 1.874 && mV < 11.950)
{
value = Var_VtoT_S[1][9];

for(i = 9; i > 0; i--)
value = mV * value + Var_VtoT_S[1][i-1];
}
else if(mV >= 11.950 && mV < 17.536)
{
value = Var_VtoT_S[2][5];

for(i = 5; i > 0; i--)
value = mV * value + Var_VtoT_S[2][i-1];
}
else
{
value = Var_VtoT_S[3][4];

for(i = 4; i > 0; i--)
value = mV * value + Var_VtoT_S[3][i-1];
}

return value;
}
/******************************************************************************
*函数描述:R型 电压转温度(冷端温度为0)
毫伏范围：-0.226 ~ +21.003
温度范围：-49.856C° ~ +1760.035C°
*输入变量:mV 毫伏
*返回变量:value 温度
******************************************************************************/
float R_VtoT(float mV)
{
uchar i = 0;
float value = 0;

if(mV >= -0.240 && mV < 1.923)
{
value = Var_VtoT_R[0][10];

for(i = 10; i > 0; i--)
value = mV * value + Var_VtoT_R[0][i-1];
}
else if(mV >= 1.923 && mV < 13.228)
{
value = Var_VtoT_R[1][9];

for(i = 9; i > 0;i--)
value = mV * value + Var_VtoT_R[1][i-1];
}
else if(mV >= 11.361 && mV < 19.739)
{
value = Var_VtoT_R[2][5];

for(i = 5; i > 0; i--)
value = mV * value + Var_VtoT_R[2][i-1];
}
else
{
value = Var_VtoT_R[3][4];
for(i = 4; i > 0; i--)
value = mV * value + Var_VtoT_R[3][i-1];
}

return value;
}
/******************************************************************************
*函数描述:B型 电压转温度(冷端温度为0)
毫伏范围：+0.178 ~ +13.820
温度范围：+201.024C° ~ +1819.963C°
*输入变量:mV 毫伏
*返回变量:value 温度
******************************************************************************/
float B_VtoT(float mV)
{
uchar i = 0;
float value = 0;

if(mV >= 0.033 && mV < 1.978)
{
value = Var_VtoT_B[0][8];

for(i = 8; i > 0; i--)
value = mV * value + Var_VtoT_B[0][i-1];
}
else
{
value = Var_VtoT_B[1][8];

for(i = 8; i > 0; i--)
value = mV * value + Var_VtoT_B[1][i-1];
}

return value;
}
/******************************************************************************
*函数描述:K型 电压转温度(冷端温度为0)
毫伏范围：-5.891 ~ +54.819
温度范围：-199.933C° ~ +1370.057C°
*输入变量:mV 毫伏
*返回变量:value 温度
******************************************************************************/
float K_VtoT(float mV)
{
uchar i = 0;
float value = 0;

if(mV >= -6.478 && mV < 0)
{
value = Var_VtoT_K[0][8];

for(i = 8; i >0; i--)
value = mV * value + Var_VtoT_K[0][i-1];
}
else if(mV >= 0 && mV < 20.644)
{
value = Var_Vt