热敏电阻温度探测查表方法
NTC热敏电阻查表Exsel表格
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- stm32F030C8T6程序：
Excel表格 百度云盘下载
链接: link.
R1是串联的电阻值
热敏电阻的线性图
stm32F030C8T6程序：
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/*******************************************
ADC 温度转换
********************************************/
const u16 NTCTab[]=
{
0xF6B,//-20℃
0xF63,//-19℃
0xF5A,//-18℃
0xF51,//-17℃
0xF47,//-16℃
0xF3D,//-15℃
0xF33,//-14℃
0xF28,//-13℃
0xF1D,//-12℃
0xF11,//-11℃
0xF05,//-10℃
0xEF8,//-9℃
0xEEB,//-8℃
0xEDD,//-7℃
0xECE,//-6℃
0xEBF,//-5℃
0xEAF,//-4℃
0xE9F,//-3℃
0xE8E,//-2℃
0xE7D,//-1℃
0xE6B,//0℃
0xE58,//1℃
0xE45,//2℃
0xE31,//3℃
0xE1C,//4℃
0xE06,//5℃
0xDEF,//6℃
0xDD9,//7℃
0xDC2,//8℃
0xDA9,//9℃
0xD90,//10℃
0xD77,//11℃
0xD5C,//12℃
0xD41,//13℃
0xD25,//14℃
0xD06,//15℃
0xCE9,//16℃
0xCCA,//17℃
0xCAC,//18℃
0xC8C,//19℃
0xC6C,//20℃
0xC4C,//21℃
0xC2A,//22℃
0xC08,//23℃
0xBE6,//24℃
0xBC3,//25℃
0xB9F,//26℃
0xB7B,//27℃
0xB57,//28℃
0xB32,//29℃
0xB0D,//30℃
0xAE7,//31℃
0xAC1,//32℃
0xA9B,//33℃
0xA74,//34℃
0xA4D,//35℃
0xA26,//36℃
0x9FE,//37℃
0x9D7,//38℃
0x9AF,//39℃
0x98A,//40℃
0x962,//41℃
0x93A,//42℃
0x912,//43℃
0x8EA,//44℃
0x8C2,//45℃
0x89A,//46℃
0x872,//47℃
0x84B,//48℃
0x823,//49℃
0x7FC,//50℃
0x7D5,//51℃
0x7AE,//52℃
0x787,//53℃
0x761,//54℃
0x73B,//55℃
0x715,//56℃
0x6F0,//57℃
0x6CB,//58℃
0x6A6,//59℃
0x682,//60℃
0x65E,//61℃
0x63A,//62℃
0x617,//63℃
0x5F5,//64℃
0x5D3,//65℃
0x5B1,//66℃
0x590,//67℃
0x570,//68℃
0x550,//69℃
0x530,//70℃
0x511,//71℃
0x4F3,//72℃
0x4D5,//73℃
0x4B8,//74℃
0x498,//75℃
0x47C,//76℃
0x460,//77℃
0x445,//78℃
0x42B,//79℃
0x411,//80℃
0x3F7,//81℃
0x3DF,//82℃
0x3C6,//83℃
0x3AF,//84℃
0x398,//85℃
0x381,//86℃
0x36B,//87℃
0x355,//88℃
0x340,//89℃
0x32C,//90℃
0x318,//91℃
0x304,//92℃
0x2F1,//93℃
0x2DF,//94℃
0x2CC,//95℃
0x2BB,//96℃
0x2A9,//97℃
0x298,//98℃
0x288,//99℃
0x277,//100℃
0x268,//101℃
0x258,//102℃
0x249,//103℃
0x23B,//104℃
0x22C,//105℃
0x21E,//106℃
0x211,//107℃
0x204,//108℃
0x1F7,//109℃
0x1EA,//110℃
0x1DE,//111℃
0x1D2,//112℃
0x1C6,//113℃
0x1BB,//114℃
0x1AF,//115℃
0x1A4,//116℃
0x19A,//117℃
0x190,//118℃
0x185,//119℃
0x17C,//120℃
0x173,//121℃
0x16A,//122℃
0x161,//123℃
0x158,//124℃
0x150,//125℃
0x148,//126℃
0x140,//127℃
0x138,//128℃
0x131,//129℃
0x129,//130℃
0x122,//131℃
0x11B,//132℃
0x115,//133℃
0x10E,//134℃
0x108,//135℃
0x102,//136℃
0xFC,//137℃
0xF6,//138℃
0xF0,//139℃
0xEB,//140℃
0xE5,//141℃
0xE0,//142℃
0xDB,//143℃
0xD6,//144℃
0xD1,//145℃
0xCC,//146℃
0xC7,//147℃
0xC3,//148℃
0xBF,//149℃
0xBA,//150℃
0xB6,//151℃
0xB2,//152℃
0xAE,//153℃
0xAA,//154℃
0xA6,//155℃
0xA2,//156℃
0x9F,//157℃
0x9B,//158℃
0x98,//159℃
0x95,//160℃
0xB9,//161℃
0xB6,//162℃
0xB3,//163℃
0xB0,//164℃
0xAD,//165℃
0xAB,//166℃
0xA8,//167℃
0xA5,//168℃
0xA2,//169℃
0xA0,//170℃
0x9D,//171℃
0x9B,//172℃
0x98,//173℃
0x96,//174℃
0x93,//175℃
0x91,//176℃
0x8F,//177℃
0x8D,//178℃
0x8A,//179℃
0x88,//180℃
0x86,//181℃
0x84,//182℃
0x82,//183℃
0x80,//184℃
0x7E,//185℃
0x7C,//186℃
0x7A,//187℃
0x78,//188℃
0x76,//189℃
0x74,//190℃
0x73,//191℃
0x71,//192℃
0x6F,//193℃
0x6D,//194℃
0x6C,//195℃
0x6A,//196℃
0x68,//197℃
0x67,//198℃
0x65,//199℃
0x64,//200℃
0x62,//201℃
0x61,//202℃
0x5F,//203℃
0x5E,//204℃
0x5D,//205℃
0x5B,//206℃
0x5A,//207℃
0x58,//208℃
0x57,//209℃
0x56,//210℃
0x55,//211℃
0x53,//212℃
0x52,//213℃
0x51,//214℃
0x50,//215℃
0x4F,//216℃
0x4D,//217℃
0x4C,//218℃
0x4B,//219℃
0x4A,//220℃
0x40 //短路
};
/**
* @brief This function enables the peripheral clocks on GPIO ports A,B,C
* configures PA1, PB1 and PC0 in Analog mode.
* For portability, some GPIO are again enabled.
* @param None
* @retval None
*/
void ConfigureGPIOforADC(void)
{
/* (1) Enable the peripheral clock of GPIOA*/
/* (2) Select analog mode for PA4 5 6 7*/
RCC->AHBENR |= RCC_AHBENR_GPIOAEN ; /* (1) */
GPIOA->MODER |= GPIO_MODER_MODER4 | GPIO_MODER_MODER5 | GPIO_MODER_MODER6 | GPIO_MODER_MODER7 ; /* (2) */
GPIOB->MODER |= GPIO_MODER_MODER0; /* (2) */
}
/**
* @brief This function configures the ADC to convert sequentially 4 channels
* in continuous mode.
* The conversion frequency is 14MHz
* The interrupt on overrun is enabled and the NVIC is configured
* @param None
* @retval None
*/
void ConfigureADC(void)
{
/* (1) Select HSI14 by writing 00 in CKMODE (reset value) */
/* (2) Select the auto off mode */
/* (3) Select CHSEL17 for VRefInt */
/* (4) Select a sampling mode of 111 i.e. 239.5 ADC clk to be greater than 17.1us */
/* (5) Wake-up the VREFINT (only for VBAT, Temp sensor and VRefInt) */
//ADC1->CFGR2 &= ~ADC_CFGR2_CKMODE; /* (1) */
ADC1->CFGR1 |= ADC_CFGR1_AUTOFF; /* (2) */
ADC1->CHSELR = ADC_CHSELR_CHSEL17; /* (3) */
ADC1->SMPR |= ADC_SMPR_SMP_0 | ADC_SMPR_SMP_1 | ADC_SMPR_SMP_2; /* (4) */
ADC->CCR |= ADC_CCR_VREFEN; /* (5) */
}
/**
* @brief This function enables the ADC
* @param None
* @retval None
*/
void EnableADC(void)
{
/* (1) Select HSI14 by writing 00 in CKMODE (reset value) */
/* (2) Select the auto off mode */
/* (3) Select CHSEL17 for VRefInt */
/* (4) Select a sampling mode of 111 i.e. 239.5 ADC clk to be greater than 17.1us */
/* (5) Wake-up the VREFINT (only for VBAT, Temp sensor and VRefInt) */
//ADC1->CFGR2 &= ~ADC_CFGR2_CKMODE; /* (1) */
ADC1->CFGR1 |= ADC_CFGR1_AUTOFF; /* (2) */
ADC1->CHSELR = ADC_CHSELR_CHSEL4; /* (3) */
ADC1->SMPR |= ADC_SMPR_SMP_0 | ADC_SMPR_SMP_1 | ADC_SMPR_SMP_2; /* (4) */
ADC->CCR |= ADC_CCR_VREFEN; /* (5) */
}
/**
* @brief This function disables the ADC
* @param None
* @retval None
*/
void DisableADC(void)
{
/* (1) Ensure that no conversion on going */
/* (2) Stop any ongoing conversion */
/* (3) Wait until ADSTP is reset by hardware i.e. conversion is stopped */
/* (4) Disable the ADC */
/* (5) Wait until the ADC is fully disabled */
if ((ADC1->CR & ADC_CR_ADSTART) != 0) /* (1) */
{
ADC1->CR |= ADC_CR_ADSTP; /* (2) */
}
while ((ADC1->CR & ADC_CR_ADSTP) != 0) /* (3) */
{
/* For robust implementation, add here time-out management */
}
ADC1->CR |= ADC_CR_ADDIS; /* (4) */
while ((ADC1->CR & ADC_CR_ADEN) != 0) /* (5) */
{
/* For robust implementation, add here time-out management */
}
}
/**
* @brief This function enables the clock in the RCC for the ADC
* and start HSI 14MHz dedicated RC oscillator
* @param None
* @retval None
*/
void SetClockForADC(void)
{
/* (1) Enable the peripheral clock of the ADC */
/* (2) Start HSI14 RC oscillator */
/* (3) Wait HSI14 is ready */
RCC->APB2ENR |= RCC_APB2ENR_ADC1EN; /* (1) */
RCC->CR2 |= RCC_CR2_HSI14ON; /* (2) */
while ((RCC->CR2 & RCC_CR2_HSI14RDY) == 0) /* (3) */
{
/* For robust implementation, add here time-out management */
}
}
//******************************************************
//单次转换
//******************************************************
u16 adc_result(u8 ch)
{
ADC1->CHSELR = 1<<ch; //通道选择
/* Performs the AD converion */
ADC1->CR |= ADC_CR_ADSTART; /* start the ADC conversion */
while ((ADC1->ISR & ADC_ISR_EOC) == 0); /* wait end of conversion */
return(ADC1->DR );
}
//查表函数
u8 look_up_table(const u16 *a,u8 ArrayLong,u16 data)
{
u16 begin,end,middle ;
u8 i ;
begin = 0 ;
end = ArrayLong-1 ;
i = 0 ;
if(data >= a[begin])
{
return begin ;
}
else if(data <= a[end])
return end ;
while(begin < end)
{
middle = (begin+end)/2 ;
if(data == a[middle] )
break ;
if(data < a[middle] && data > a[middle+1])
break ;
if(data > a[middle])
end = middle ;
else
begin = middle ;
if(i++ > ArrayLong)
break ;
}
if(begin > end )
return 0 ;
return middle ;
}
//******************************************************
//温度查表转换计算(33K+100K)3路
//******************************************************
uint temp_LookUp(uchar a)
{
uchar i;
uint dy1=0,xsd,tt;
for(i=0;i<16;i++)
{
tt=adc_result(a);
DelayMs(5);
dy1 = dy1 + tt;
}
dy1 /= 16;
i = look_up_table(NTCTab,180,dy1);
tt = NTCTab[i] - NTCTab[i+1];
xsd = 10-((dy1 % tt)*10/tt); //计算小数点后的数值
if(i>20)
{
tt = i -20;
tt = tt * 10;
tt = tt + xsd;
}
else
tt = 0;
return(tt);
}