自制簡易幅射檢測儀

ID:997011 · 發表于 2023-10-4 07:29

早些年我自制過兩款簡易幅射檢測儀，如圖所示；左邊的是用89C2051單片機制成，右邊是用NANO制成。兩者功能大同小異，只是后者增加了溫濕度顯示，現將其分享給大家以供參考。外觀圖和電路圖及程序如下：

#include <Wire.h>
#include <dht11.h>
#include <LiquidCrystal_I2C.h>
#include <SPI.h>

dht11 DHT11;
#define DHT11PIN 8
unsigned long counts=2;
unsigned long cpm=0;
unsigned long previousMillis;
float usv;
int ds1=2;
int ds2=2;
int ds3=2;
int ds4=2;
int ds5=2;
int ds6=2;
int ds7=2;
int ds8=2;
int ds9=2;
int ds10=2;
int ds11=2;
int ds12=2;
int ds13=2;
int ds14=2;
int ds15=2;

LiquidCrystal_I2C lcd(0x3F, 16, 2);

void tube_impulse() {
  counts++;
  digitalWrite(5,HIGH);
  delay(100);
  digitalWrite(5,LOW);
}

void setup()
{
  Wire.begin();
  Serial.begin(9600);
  attachInterrupt(0, tube_impulse, FALLING);
  lcd.init();
  lcd.backlight();
  pinMode(8,INPUT_PULLUP);
  pinMode(5,OUTPUT);
  digitalWrite(5,LOW);
}

void loop()
{
int chk = DHT11.read(DHT11PIN);
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis > 4000) {
  previousMillis = currentMillis;
ds1=ds2;
ds2=ds3;
ds3=ds4;
ds4=ds5;
ds5=ds6;
ds6=ds7;
ds7=ds8;
ds8=ds9;
ds9=ds10;
ds10=ds11;
ds11=ds12;
ds12=ds13;
ds13=ds14;
ds14=ds15;
ds15=counts;
cpm=ds1+ds2+ds3+ds4+ds5+ds6+ds7+ds8+ds9+ds10+ds11+ds12+ds13+ds14+ds15;
usv = float(cpm) / 151;
counts = 0;
lcd.clear();
lcd.print("CPM=");
lcd.print(cpm);
lcd.setCursor(0, 1);
lcd.print(usv);
lcd.print("uSv/h");

if (usv >= 10)
{
   lcd.setCursor(8, 0);
   lcd.print("D");
   delay(10);
}
else if (usv < 10 && usv >= 0.52)
   {
      lcd.setCursor(8, 0);
      lcd.print("N");
      delay(10);
   }
   else if (usv < 0.52)
      {
      lcd.setCursor(8, 0);
      lcd.print("S");
      delay(10);
      }
  }
   lcd.setCursor(11,0);
lcd.print((int)DHT11.temperature, 1);
lcd.setCursor(14,0);
lcd.print((char)223);
lcd.print("C");
lcd.setCursor(11,1);
lcd.print((float)DHT11.humidity, 0);
lcd.setCursor(15,1);
lcd.print((char)37);
  }