Ankit YandeHenry CaiShiv Rathod
Published © GPL3+

Engineering a Black Ice Detection System For Roadways

We connected a Vernier Temperature Probe and Motion Detector to an Arduino Uno to detect black ice on roads.

BeginnerFull instructions provided4,122
Engineering a Black Ice Detection System For Roadways

Things used in this project

Hardware components

Arduino UNO & Genuino UNO
Arduino UNO & Genuino UNO
×1
SparkFun Vernier Arduino Interface Shield
×1
Vernier Motion Detector
×1
Vernier Surface Temperature Sensor
×1
Jumper wires (generic)
Jumper wires (generic)
×1
SparkFun RedStick (BadgerStick)
×1
SparkFun LED Array - 8x7
×1

Software apps and online services

Arduino IDE
Arduino IDE
codebender
Used only for coding the Badgerstick

Story

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Code

BlackIceDetectior

Java
Upload this code onto the Arduino and when the temperature sensor detected that the ground temperature is 0°C or below, it will activate the motion detector that should light the LED when motion detector detected a decrease in distance due to the buildup of ice.
int ledPin = 13;//plug anode in D13 and cathode in GND of LED
const int TriggerPin = 3; //trigger pin
const int EchoPin = 2;// echo pin
int ThermistorPIN =0;// Analog Pin 0
int TimeBetweenReadings = 500; // in ms
int ReadingNumber=0;


void setup() {
  // put your setup code here, to run once:
  pinMode(ledPin,OUTPUT);
  pinMode(TriggerPin, OUTPUT);
  pinMode(EchoPin, INPUT); //this is the pin that goes high when an echo is received
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
  Serial.println("start");
}


void loop() {
  digitalWrite(ledPin, LOW);
  delay(500); //delay of half a second
// Temperature Sensors
  float Time;
  int Count; //reading from the A/D converter (10-bit)
  float Temp; //the print below does the division first to avoid overflows (Kelvin)
  Count=analogRead(ThermistorPIN);       // read count from the A/D converter 
  Temp=Thermistor(Count);       // and  convert it to CelsiusSerial.print(Time/1000); //display in seconds, not milliseconds                                                     
  delay(TimeBetweenReadings); // Delay\ 
  ReadingNumber++;  
}
 
float Thermistor(int Raw) //This function calculates temperature from ADC count
{
 long Resistance; 
 float Resistor = 15000; //fixed resistor
 float C; //Celsius
// the measured resistance of your particular fixed resistor in
// the Vernier BTA-ELV and in the SparkFun Vernier Adapter Shield 
// is a precision 15K resisitor 
  float Temp;  // Dual-Purpose variable to save space.
  Resistance=( Resistor*Raw /(1024-Raw)); 
  Temp = log(Resistance); // Saving the Log(resistance) so not to calculate  it 4 times later 
  Temp = 1 / (0.00102119 + (0.000222468 * Temp) + (0.000000133342 * Temp * Temp * Temp));
  C = Temp - 273.15;  // Convert Kelvin to Celsius                      
  
  
  if(C>=0){
// Motion Detector code
  long time; // clock reading in microseconds
  long ReturnTime; // time it take echo to return
  const float SpeedOfSound = 340; //in m/s
  float Distance;// in centimeters
  int val = 0;
  digitalWrite(TriggerPin, LOW); //(off)
  delayMicroseconds(4000);
  digitalWrite(TriggerPin, HIGH); // start the ultrasound pulse (on)
  time = micros(); //note time
  delayMicroseconds(900); //delay during the blanking time
  do
  {
    val =digitalRead(EchoPin);
    // if no echo, repeat loop and wait:
  }
  while (val == LOW) ;
  ReturnTime =micros() - time;
  /* The speed of sound is 340 m/s.
  The ultrasound travels out and back, so to find the distance of the
  object we take half of the distance traveled.*/
  Distance= ReturnTime *SpeedOfSound/2/10000 ;// note convert to cm
  Serial.print(ReturnTime);// print the time it took until the echo
  Serial.print("\t"); // tab character
  Serial.println(Distance);
  delay(1000); //delay of a second
  


//Ice Detection

  int d; //hard code distance from ground
  if(C>=0 && Distance<d){
    Serial.println("Black Ice Detected");
    digitalWrite(ledPin, HIGH);//plug anode in D13 and cathode in GND of LED
    delay(500); //delay of half a second
  }
}
 
  
}

Badgerstick code

Java
This Code uploaded onto the SparkFun Badgerstick using Codebender
If you have a Badgerstick like we did you may need to use the old bootloader
Use this for more info: https://learn.sparkfun.com/tutorials/badgerhack#hack-your-badge
#include <SparkFun_LED_8x7.h>
#include <Chaplex.h>

// Global variables
static byte led_pins[] = {2, 3, 4, 5, 6, 7, 8, 9}; // Pins for LEDs

void setup() {

  // Initialize LED array
  Plex.init(led_pins);

  // Clear display
  Plex.clear();
  Plex.display();
}

void loop() {

  // Scroll text 1 time
  Plex.scrollText("Black Ice", 1);

  // Wait 5 1/2 seconds to let the text finish scrolling
  delay(5500);

  
}

Credits

Ankit Yande

Ankit Yande

1 project • 2 followers
Henry Cai

Henry Cai

1 project • 4 followers
Shiv Rathod

Shiv Rathod

1 project • 1 follower
I enjoy building things and problem solving.

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