51+HD7279+ADS1110+PT100的测温系统,通过与标准温度计对比拟合,精度能达到0.5度

#include <intrins.h>

#include <STC12C5A60S2.H>

typedef unsigned int uint;

typedef unsigned char uchar;

typedef unsigned short WORD;

float code RTD_TAB_PT100[151] = // 表格是以1度为一步，即-20, -19, -18.....

{

88.22, 88.62 ,88.62, 89.40, 89.80, 90.19, 90.59, 90.98, 91.37, 91.77, // -30 ~ -21

92.16, 92.55, 92.95, 93.34, 93.73, 94.12, 94.52, 94.91, 95.30, 95.69, // -20 ~ -11

96.09, 96.48, 96.87, 97.26, 97.65, 98.04, 98.44, 98.83, 99.22, 99.61, // -10 ~ -1

100.00,100.39,100.78,101.17,101.56,101.95,102.34,102.73,103.13,103.51, // 0 ~ 9

103.90,104.29,104.68,105.07,105.46,105.85,106.24,106.63,107.02,107.49, // 10 ~ 19

107.79,108.18,108.57,108.96,109.35,109.73,110.12,110.51,110.90,111.28, // 20 ~ 29

111.67,112.06,112.45,112.83,113.22,113.61,113.99,114.38,114.77,115.15, // 30 ~ 39

115.54,115.93,116.31,116.70,117.08,117.47,117.86,118.24,118.62,119.01, // 40 ~ 49

119.40,119.78,120.16,120.55,120.93,121.32,121.70,122.09,122.47,122.86, // 50 ~ 59

123.24,123.62,124.01,124.39,124.77,125.16,125.54,125.92,126.31,126.69, // 60 ~ 69

127.07,127.45,127.84,128.22,128.60,128.98,129.37,129.75,130.13,130.51, // 70 ~ 79

130.89,131.27,131.66,132.04,132.42,132.80,133.18,133.56,133.94,134.32, // 80 ~ 89

134.70,135.08,135.46,135.84,136.22,136.60,136.98,137.36,137.74,138.12, // 90 ~ 99

138.50,138.88,139.26,139.64,140.02,140.39,140.77,141.15,141.53,141.91, // 100 ~ 109

142.29,142.66,143.04,143.42,143.80,144.17,144.55,144.93,145.31,145.68, // 110 ~ 119

146.06 // 120

};

//float code RTD_TAB_PT100[41] = // 表格是以5度为一步，即-50, -45, - 40.....

//{

// 80.31, 82.29, 84.27 ,86.25, 88.22, 90.19, 92.16, 94.12, 96.09, 98.04, // -50 ~ -5

// 100.00,101.95,103.90,105.85,107.79,109.73,111.67,113.61,115.54,117.47, // 0 ~ 45

// 119.40,121.32,123.24,125.16,127.08,128.99,130.90,132.80,134.71,136.61, // 50 ~ 95

// 138.51,140.40,142.29,144.18,146.07,147.95,149.83,151.71,153.58,155.46, // 100 ~ 145

// 157.33 // 50

//};

sbit beep = P3^5;

//----------------ADS1110地址、配置字-----------------//

#define ADS1110_WR_ADDRESS 0x92 // 1001 001 0 写

#define ADS1110_RD_ADDRESS 0x93 // 1001 001 1 读

#define ADS1110_CONFIG_REG 0x8C // 连续转换模式，16bit精度，PGA=1

sbit ADS1110_SDA = P1^5; // 模拟I2C数据传输位