#define pin_zhuodu A0

/*

 * 函数功能- 获取浊度传感器的数据

 * 说明    - 指定温度 25度

 * 输入    - 空

 * 输出    - 公式计算后返回float数据

*/

float TU=0.0;

float TU_value=0.0;

float TU_calibration=0.0;

float temp_data=25.0;

float K_Value=3347.19;

float Get_zhuodu_value()

{

  int sensorValue = analogRead(pin_zhuodu);// read the input on analog pin 0:

  float TU = sensorValue * (5.0 / 1024.0); // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):

  TU_calibration=-0.0192*(temp_data-25)+TU;

  TU_value=-865.68*TU_calibration + K_Value;

  if(TU_value<=0){TU_value=0;}

  if(TU_value>=3000){TU_value=3000;}

  Serial.print("TU Value:");

  Serial.print(TU_value); // print out the value you read:

  Serial.println("NTU");

  return TU_value;

 }

void setup() {

  Serial.begin(9600); //Baud rate: 9600

}

void loop() {

  delay(500);

  Get_zhuodu_value();

}