久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

標題: 上傳一個顯示溫濕度的arduino代碼 [打印本頁]

作者: 醉鄉(xiāng)民謠 時間: 2018-4-15 11:54
標題: 上傳一個顯示溫濕度的arduino代碼

double Fahrenheit(double celsius)

{

return 1.8 * celsius + 32;

} //攝氏溫度度轉化為華氏溫度

double Kelvin(double celsius)

{

return celsius + 273.15;

} //攝氏溫度轉化為開氏溫度

// 露點（點在此溫度時，空氣飽和并產(chǎn)生露珠）

// 參考:wahiduddin點net/calc/density_algorithms.htm

double dewPoint(double celsius, doublehumidity) //humidity是濕度，celsius是攝氏溫度

{

double A0= 373.15/(273.15 + celsius);

double SUM = -7.90298 * (A0-1);

SUM += 5.02808 * log10(A0);

SUM += -1.3816e-7 * (pow(10, (11.344*(1-1/A0)))-1) ;

SUM += 8.1328e-3 * (pow(10,(-3.49149*(A0-1)))-1) ;

SUM += log10(1013.246);

double VP = pow(10, SUM-3) * humidity;

double T = log(VP/0.61078); //temp var

return (241.88 * T) / (17.558-T);

}

// 快速計算露點，速度是5倍dewPoint()（上面函數(shù)的結果）

double dewPointFast(double celsius, doublehumidity)

{

double a = 17.271;

double b = 237.7;

double temp = (a * celsius) / (b + celsius) + log(humidity/100);

double Td = (b * temp) / (a - temp);

return Td;

}

#include <dht11.h>

dht11 DHT11;

#define DHT11PIN 2

void setup() //設置一些參數(shù)

{

Serial.begin(9600);

Serial.println("DHT11 TEST PROGRAM ");

Serial.print("LIBRARY VERSION: ");

Serial.println(DHT11LIB_VERSION);

Serial.println();

}

void loop()

{

Serial.println("\n"); //換行

intchk = DHT11.read(DHT11PIN);

Serial.print("Read sensor: "); //讀取傳感器

switch (chk)

{

case DHTLIB_OK:

Serial.println("OK");

break;

case DHTLIB_ERROR_CHECKSUM:

Serial.println("Checksumerror");

break;

case DHTLIB_ERROR_TIMEOUT:

Serial.println("Time outerror");

break;

default:

Serial.println("Unknownerror");

break;

}

Serial.print("Humidity (%): ");

Serial.println((float)DHT11.humidity, 2);

Serial.print("Temperature (oC): ");

Serial.println((float)DHT11.temperature, 2);

Serial.print("Temperature (oF): ");

Serial.println(Fahrenheit(DHT11.temperature), 2);

Serial.print("Temperature (K): ");

Serial.println(Kelvin(DHT11.temperature), 2);

Serial.print("Dew Point (oC): ");

Serial.println(dewPoint(DHT11.temperature, DHT11.humidity));

Serial.print("Dew PointFast (oC): ");

Serial.println(dewPointFast(DHT11.temperature, DHT11.humidity));

delay(2000);

}

作者: 15616200407 時間: 2019-12-5 18:33
我運行了一下錯誤是說沒有dht11.h 這個文件怎么解決剛接觸arduino什么都不懂...求教

歡迎光臨 (http://m.zg4o1577.cn/bbs/)