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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 charfloat 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,-1.028*******/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******************************************************************************/精品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];精品}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;精品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];精品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;精品}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******************************************************************************/精品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******************************************************************************/精品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];精品}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_VtoT_K[1][9];for(i = 9; i >0; i--)value = mV * value + Var_VtoT_K[1][i-1];}else if(mV >= 20.644 && mV <= 54.900){value = Var_VtoT_K[2][6];for(i = 6; i >0; i--)value = mV * value + Var_VtoT_K[2][i-1];}return value;}/****************************************************************************** *函数描述:N型电压转温度(冷端温度为0)毫伏范围：-3.990 ~ +47.513温度范围：-199.935C° ~ +1299.968C°*输入变量:mV 毫伏*返回变量:value 温度******************************************************************************/ float N_VtoT(float mV){uchar i = 0;float value = 0;if(mV >= -4.365 && mV<0){value = Var_VtoT_N[0][9];for(i = 9; i >0; i--)value = mV * value + Var_VtoT_N[0][i-1]; }else if(mV >= 0 && mV < 20.613){value = Var_VtoT_N[1][7];for(i = 7; i >0; i--)value = mV * value + Var_VtoT_N[1][i-1]; }else if(mV>=20.613 && mV<=47.533) {value = Var_VtoT_N[2][5];for(i = 5; i > 0; i--)value = mV * value + Var_VtoT_N[2][i-1];}return value;}/****************************************************************************** *函数描述:E型电压转温度(冷端温度为0)毫伏范围：-8.825 ~ +76.373温度范围：-199.994C° ~ +1000.021C°*输入变量:mV 毫伏*返回变量:value 温度******************************************************************************/ float E_VtoT(float mV){uchar i = 0;float value = 0;if(mV >= -9.845 && mV < 0){value = Var_VtoT_E[0][8];for(i = 8; i > 0; i--)value = mV * value + Var_VtoT_E[0][i-1];精品}else if(mV>=0 && mV<=76.393){value = Var_VtoT_E[1][9];for(i = 9; i > 0; i--)value = mV * value + Var_VtoT_E[1][i-1];}return value;}/****************************************************************************** *函数描述:J型电压转温度(冷端温度为0)毫伏范围：-8.095 ~ +69.553温度范围：-209.954C° ~ +1199.96C°*输入变量:mV 毫伏*返回变量:value 温度******************************************************************************/ float J_VtoT(float mV){uchar i = 0;float value = 0;if(mV>=-8.105 && mV<0){value = Var_VtoT_J[0][8];for(i = 8; i > 0; i--)value = mV * value + Var_VtoT_J[0][i-1]; }else if(mV >= 0 && mV < 42.919){value = Var_VtoT_J[1][7];for(i = 7; i > 0; i--)value = mV * value + Var_VtoT_J[1][i-1]; }else if(mV>=42.919 && mV<=69.563) {value = Var_VtoT_J[2][5];for(i = 5; i > 0; i--)value = mV * value + Var_VtoT_J[2][i-1]; }return value;}/****************************************************************************** *函数描述:T型电压转温度(冷端温度为0)毫伏范围：-5.603 ~ +20.872温度范围：-199.964C° ~ +399.975C°*输入变量:mV 毫伏*返回变量:value 温度******************************************************************************/ float T_VtoT(float mV){uchar i = 0;float value = 0;if(mV >= -6.268 && mV < 0){value = Var_VtoT_T[0][7];for(i = 7; i >0; i--)value = mV * value + Var_VtoT_T[0][i-1];}else if(mV >= 0 && mV <= 20.882){value = Var_VtoT_T[1][6];for(i = 6; i >0; i--)value = mV * value + Var_VtoT_T[1][i-1];}return value;}/****************************************************************************** *函数描述:主函数******************************************************************************/ int main(){//tmp = J_TtoV(700.5);//tmp = K_TtoV(500.5);tmp = E_VtoT(40.23);while(1);}感谢下载!欢迎您的下载，资料仅供参考。

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基于热电偶的温度测试仪设计

基于热电偶的温度测试仪设计

基于热电偶的温度测试仪设计摘要：基于热电偶的温度测试仪，该仪器是以AT89C51单片机为核心，由AD590，由热电偶测量热端温度T，该热电偶采用K型热集成温度传感器测量冷端温度T电偶（镍铬-镍硅热电偶）。

它们分别经过I/V转换和线性放大，分时进行A/D转换，转换后的数字信号送入AT89C51单片机，经单片机运算处理，转换成ROM地址，再通过二次查表法计算出实际温度值，此值送4位共阴极LED数码管显示。

该热电偶测温仪的软件用C语言编写，采用模块化结构设计。

关键词：热电偶，冷端温度补偿，89C51单片机，ADC0809，线性化标度变换Abstract:Thermocouple-based temperature testing instrument, the instrument is based on AT89C51 microcontroller as the core, from AD590 integrated temperature sensor measures the cold junction temperature T0, measured by the thermocouple hot-side temperature T, the use of K-Thermocouple Thermocouple ( Ni-Cr - Ni-Si thermocouple). They are through the I / V conversion and linear amplification, time for A / D conversion, the converted digital signal into the AT89C51 microcontroller, microcontroller operation after processing into ROM address, and then through the second look-up table method to calculate the actual temperature value, this value is sent to four common cathode LED digital tube display. The thermocouple thermometer software with C language, using a modular structure design.Keywords:Thermocouple, cold junction temperature compensation, 89C51 microcontroller, ADC0809, linear scale transformation目录1 前言 (1)2 整体方案设计 (2)2.1方案论证 (2)2.2方案比较 (3)3 单元模块设计 (4)3.1冷端采集和补偿电路模块 (4)3.1.1 AD590介绍 (4)3.1.2冷端采集和补偿电路分析 (6)3.2热端放大电路模块 (6)3.3A/D转换器ADC0809 (7)3.4单片机模块 (8)3.5LED显示模块 (11)4 软件设计 (13)4.1主程序 (13)4.2A/D转换子程序 (13)4.3线性化标度变换子程序 (15)5 系统调试 (18)5.1调试软件介绍 (18)5.1.1 ISIS简介 (18)5.1.2 Keil C51简介 (18)5.2硬件调试 (18)5.3软件调试 (19)5.4硬件软件联调 (20)6系统技术指标及精度和误差分析 (21)7设计小结 (22)8总结与体会 (23)9参考文献 (24)附录1：电路总图 (25)附录2：软件代码 (26)1 前言温度是表征物体冷热程度的物理量，温度传感器是通过物体随温度变化而改变某种特性来间接测量的。

stm32单片机利用ntc热敏电阻温度转换公式C语言版

stm32单片机利用ntc热敏电阻温度转换公式C语言版

stm32单⽚机利⽤ntc热敏电阻温度转换公式C语⾔版⾸先我们需要明确电路结构热敏电阻的原理就不再赘述，本⽂不凑字数，只讲⼲货必须要知道的就是串联电阻R9程序中定义为resistanceInSeries ，精度越⾼越好为了⽅便，先在程序中定义好你的热敏类型和相关参数float resistanceInSeries = 10000.0; //ntc的串联电阻float ntcBvalue = 3950.0; //B值float ntcR25 = 100000.0; //25度时电阻float KelvinsZero = 273.15; //绝对零度uint16_t systemPowerVoltage = 3300;uint16_t adcValue;float resolution = 0.805664;float T25 = 298.15; //25 =KelvinsZero+25具体计算办法先通过NTC的电压推算出串联电阻的分压然后再计算出线路电流再计通过欧姆定律从计算出热敏电阻当前的阻值最后计算出温度这些计算，需要引⼊math.h务必注意uint16_t ntcVoltage = adcValue * resolution;float ntcCurrent = (sysPowerVoltage- ntcVoltage)/ resistanceInSeries; //计算NTC的电流(A)float ntcResistance = ntcVoltage / ntcCurrent; //计算当前电阻值float temperature = (ntcBvalue * T25)/ (T25 * (log(ntcResistance) - log(ntcR25)) + ntcBvalue);temperature -= KelvinsZero; //计算最终温度这个计算办法，消耗内存少，消耗FLASH也少，即使⼩容量单⽚机也可以⽤先来看⼀下屏蔽这段代码后的程序占⽤容量在看⼀下执⾏这段代码后的程序占⽤消耗了⼤概120多个字节的RAM和，flash占⽤10kb左右。

C51单片机数字温度计汇编程序及说明书

C51单片机数字温度计汇编程序及说明书

1绪论1．1选题背景随着人们生活水平的不断提高,单片机控制无疑是人们追求的目标之一，它所给人带来的方便也是不可否定的，其中数字温度计就是一个典型的例子，但人们对它的要求越来越高，要为现代人工作、科研、生活提供更好的更方便的设施就需要从单片机技术入手，一切向着数字化控制，智能化控制方向发展。

温度测量在物理实验、医疗卫生、食品生产等领域，尤其在热学试验（如：物体的比热容、汽化热、热功当量、压强温度系数等教学实验）中，有特别重要的意义。

现在所使用的温度计通常都是精度为1℃和0.1℃的水银、煤油或酒精温度计。

这些温度计的刻度间隔通常都很密，不容易准确分辨，读数困难，而且他们的热容量还比较大，达到热平衡所需的时间较长，因此很难读准，并且使用非常不方便。

本设计所介绍的数字温度计与传统的温度计相比，具有读数方便，测温范围广，测温准确等优点，其输出温度采用数字显示，主要用于对测温比较准确的场所，或科研实验室使用。

因此本课题就尝试通过编程与芯片的结合来解决传统数字温度计的弊端，设计出新型数字温度计。

1．2课题现状分析及研究意义温度传感器的发展现状：温度传感器使用范围广，数量多，居各种传感器之首，其发展大致经历了以下3个阶段：①传统的分立式温度传感器（含敏感元件）——热电偶传感器,主要是能够进行非电量和电量之间转换。

②模拟集成温度传感器/控制器。

集成传感器是采用硅半导体集成工艺制成的，因此亦称硅传感器或单片集成温度传感器。

③智能温度传感器。

它是微电子技术、计算机技术和自动测试技术（ATE_）的结晶。

智能温度传感器内部包含温度传感器、A/D传感器、信号处理器、存储器（或寄存器）和接口电路。

本课题的研究可以应用领域生产、生活等很多领域。

对于家用电器从洗衣机、微波炉到音响等等到处都可以用到温度控制器来方便大家的日常生活。

开发此产品后也可方便应用安装在小至家庭大到工厂车间，小至一个芯片大到一个机械设备。

例如在家庭客厅卧室等必要地方显示室温，可防止家里食物是否变质及早采取措施。

转换进制程序C语言,C语言各进制转换源代码

转换进制程序C语言,C语言各进制转换源代码

转换进制程序C语⾔,C语⾔各进制转换源代码#include#include#includevoid ten_two(int);void ten_eight(int);void ten_sixten(int);void two_ten(int);void two_eight(int);void two_sixten(int);void eight_two(int);void eight_ten(int);void eight_sixten(int);void sixten_two(char r[], int k);void sixten_ten(char r[], int k);void sixten_eight(char r[], int k);int main(void){int i, j, number = 0;int temp;char change[10];printf("=============================================================\n");printf(" 欢 迎 使 ⽤ 进 制 转 换 程 序 \n");printf(" 作 者：李 研 时 间：2009 年7 ⽉5 ⽇ \n");printf("=============================================================\n");do{temp = 0;//fflush(stdin);printf("\n请选择转换前的进制:\n2⼆进制\n8⼋进制\n10⼗进\n16⼗六进制\n0退出\n");printf("转换前的进制是:");scanf("%d", &i);case 2:printf("\n请选择转换后的进制:\n2⼆进制\n8⼋进制\n10⼗进\n16⼗六进制\n0退出\n"); printf("转换后的进制是：");scanf("%d", &j);switch(j){case 2:printf("\n同进制之间不⽤转化！\n");temp = 1;break;case 8:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);two_eight(number);temp = 1;break;case 10:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);two_ten(number);temp = 1;break;case 16:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);two_sixten(number);temp = 1;break;case 0:printf("谢谢使⽤！！");}break;printf("转换后的进制是：");scanf("%d", &j);switch(j){case 8:printf("\n同进制之间不⽤转化！\n");temp = 1;break;case 2:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);eight_two(number);temp = 1;break;case 10:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);eight_ten(number);temp = 1;break;case 16:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);eight_sixten(number);temp = 1;break;case 0:printf("谢谢使⽤！！");}break;case 10:printf("\n请选择转换后的进制:\n2⼆进制\n8⼋进制\n10⼗进\n16⼗六进制\n0退出\n");{case 10:printf("\n同进制之间不⽤转化！\n");temp = 1;break;case 2:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);ten_two(number);temp = 1;break;case 8:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);ten_eight(number);temp = 1;break;case 16:printf("\n请输⼊您想要转化的数：");scanf("%d", &number);ten_sixten(number);temp = 1;break;case 0:printf("谢谢使⽤！！");}break;case 16:printf("\n请选择转换后的进制:\n2⼆进制\n8⼋进制\n10⼗进\n16⼗六进制\n0退出\n"); printf("转换后的进制是：");scanf("%d", &j);printf("\n同进制之间不⽤转化！\n"); temp = 1;break;case 2:printf("\n请输⼊您想要转化的数:"); fflush(stdin);gets(change);for(number = 0;; number++){if(change[number] == '\0') break;}sixten_two(change, number);temp = 1;break;case 8:printf("\n请输⼊您想要转化的数:"); fflush(stdin);gets(change);for(number = 0;; number++){if(change[number] == '\0') break;}sixten_eight(change, number); temp = 1;break;case 10:printf("\n请输⼊您想要转化的数:"); fflush(stdin);gets(change);if(change[number] == '\0')break;}sixten_ten(change, number);temp = 1;break;case 0:printf("谢谢使⽤！！");}break;case 0:printf("\n谢谢使⽤！\n");}}while(temp == 1);return 0;}/*以下为: ⼆进制转换为⼗进制,⼋进制,⼗六进制.*/ void two_ten(int a){int i, s = 0;int result = 0;for(i = 1; a != 0; i *= 2){if(a % 10 > 1){s = 1;break;}else{result += (a % 10) * i;}if(s == 1)printf("您的输⼊有误！请重新输⼊\n"); elseprintf("\n转换后的数为：%d\n", result); }void two_eight(int a){int i, j, k, s = 0;int p[30];int result = 0;for(i = 1; a != 0; i *= 2){if(a % 10 > 1){s = 1;break;}else{result += (a % 10) * i;a = a / 10;}}for(j = 0; result != 0; j++){p[j] = result % 8;result = result / 8;}if(s == 1)printf("It is wrong\n");elsefor(k = j - 1; k >= 0; k--) {printf("%d", p[k]);}printf("\n");}}void two_sixten(int a){int i, j, k, s = 0;char p[30];int result = 0;for(i = 1; a != 0; i *= 2){if(a % 10 > 1){s = 1;break;}else{result += (a % 10) * i;a = a / 10;}}for(j = 0; result != 0; j++) {p[j] = result % 16;result = result / 16;if (p[j] > 10){switch(p[j])p[j] = 'A';break;case 11:p[j] = 'B';break;case 12:p[j] = 'C';break;case 13:p[j] = 'D';break;case 14:p[j] = 'E';break;case 15:p[j] = 'F';break;}}else p[j] += 48;}if(s == 1)printf("It is wrong\n"); else{printf("\n转换后的数为："); for(k = j - 1; k >= 0; k--) {printf("%c", p[k]);}printf("\n");}void eight_two(int a){int i, j, k, s = 0;int result = 0;int p[30];for(i = 1; a != 0; i *= 8){if(a % 10 > 7){s = 1;break;}else{result += (a % 10) * i;a = a / 10;}}for(j = 0; result != 0; j++) {p[j] = result % 2;result = result / 2;}if(s == 1)printf("It is wrong\n"); else{printf("\n转换后的数为："); for(k = j - 1; k >= 0; k--) {printf("%d", p[k]);}}void eight_ten(int a){int i, s = 0;int result = 0;for(i = 1; a != 0; i *= 8){if(a % 10 > 7){s = 1;break;}else{result += (a % 10) * i;a = a / 10;}}if(s == 1)printf("It is wrong\n");else{printf("\n转换后的数为：%d\n", result); }}void eight_sixten(int a){int i, j, k, s = 0;char p[30];int result = 0;for(i = 1; a != 0; i *= 8){}else{result += (a % 10) * i;a = a / 10;}}for(j = 0; result != 0; j++) {p[j] = result % 16;result = result / 16;if(p[j]p[j] += 48;else{switch(p[j]){case 10:p[j] = 'A';break;case 11:p[j] = 'B';break;case 12:p[j] = 'C';break;case 13:p[j] = 'D';break;case 14:}}}if(s == 1)printf("It is wrong\n");else{printf("\n转换后的数为：");for(k = j - 1; k >= 0; k--){printf("%c", p[k]);}printf("\n");}}/*以下为: ⼗六进制转换为⼗进制,⼆进制,⼋进制.*/ void sixten_ten(char a[], int k){int i, j, s = 0;int result = 0;int b[50];for(i = 0; i{if(a[i] <= '9' && a[i] >= '1'){b[i] = a[i] - 48;}else{case 'B': b[i] = 11; break; case 'C': b[i] = 12; break; case 'D': b[i] = 13; break; case 'E': b[i] = 14; break; case 'F': b[i] = 15; break; case 'a': b[i] = 10; break; case 'b': b[i] = 11; break; case 'c': b[i] = 12; break; case 'd': b[i] = 13; break; case 'e': b[i] = 14;s = 1;}}}for(i = 1, j = k - 1; j >= 0; j--, i *= 16) {result += b[j] * i;}if(s == 1)printf("It is wrong\n");else{printf("\n转换后的数为：%d", result); }}void sixten_two(char a[], int k){int i, j, s = 0;int result = 0;int b[50];int p[30];for(i = 0; i{if(a[i] <= '9' && a[i] >= '1')b[i] = a[i] - 48;else{switch(a[i]){break; case 'C': b[i] = 12; break; case 'D': b[i] = 13; break; case 'E': b[i] = 14; break; case 'F': b[i] = 15; break; case 'a': b[i] = 10; break; case 'b': b[i] = 11; break; case 'c': b[i] = 12; break; case 'd': b[i] = 13; break; case 'e': b[i] = 14; break; case 'f':}}}for(j = k - 1, i = 1; j >= 0; j--, i *= 16) {result += b[j] * i;}for(j = 0; result != 0; j++){p[j] = result % 2;result = result / 2;}if(s == 1)printf("It is wrong\n");else{printf("\n转换后的数为：");for(k = j - 1; k >= 0; k--){printf("%d", p[k]);}printf("\n");}}void sixten_eight(char a[], int k){int i, j, s = 0;int result = 0;int b[30];int p[30];if(a[i] <= '9' && a[i] >= '1') b[i] = a[i] - 48;else{switch(a[i]){case 'A':b[i] = 10;break;case 'B':b[i] = 11;break;case 'C':b[i] = 12;break;case 'D':b[i] = 13;break;case 'E':b[i] = 14;break;case 'F':b[i] = 15;break;case 'a':b[i] = 10;break;case 'b':b[i] = 11;break;case 'c':b[i] = 12;b[i] = 13;break;case 'e':b[i] = 14;break;case 'f':b[i] = 15;break;default:s = 1;}}}for(j = k - 1, i = 1; j >= 0; j--, i *= 16) {result += b[j] * i;}for(j = 0; result != 0; j++){p[j] = result % 8;result = result / 8;}if(s == 1)printf("It is wrong\n");else{printf("\n转换后的数为：");for(k = j - 1; k >= 0; k--){printf("%d", p[k]);}printf("\n");/*以下为: ⼗进制转换为⼆进制,⼋进制,⼗六进制.*/ void ten_two(int a){int j, k;int p[30];for(j = 0; a != 0; j++){p[j] = a % 2;a = a / 2;}printf("\n转换后的数为：");for(k = j - 1; k >= 0; k--){printf("%d", p[k]);}printf("\n");}void ten_eight(int a){int j, k;int p[30];for(j = 0; a != 0; j++){p[j] = a % 8;a = a / 8;}printf("\n转换后的数为：");for(k = j - 1; k >= 0; k--){printf("%d", p[k]);}printf("\n");{int j, k;int p[30];for(j = 0; a != 0; j++) {p[j] = a % 16;a = a / 16;if(p[j]p[j] += 48;else{switch(p[j]){case 10:p[j] = 'A';break;case 11:p[j] = 'B';break;case 12:p[j] = 'C';break;case 13:p[j] = 'D';break;case 14:p[j] = 'E';break;case 15:p[j] = 'F';break;}}}printf("\n转换后的数为："); for(k = j - 1; k >= 0; k--) {printf("%c", p[k]);}printf("\n");}。