Hackster is hosting Hackster Holidays, Ep. 6: Livestream & Giveaway Drawing. Watch previous episodes or stream live on Monday!Stream Hackster Holidays, Ep. 6 on Monday!
Kevin RNikhil Binu ThomasClayton PereiraTanya MathurNikita KulkarniSuhail Nazeer
Published © CERN-OHL2

Fluoresce Robotics - Autonomous UVC Disinfection Robot

The Fluoresce Robot is an autonomous disinfection robot which uses UVC radiation to provide a germ-free environment.

AdvancedFull instructions providedOver 1 day6,101
Grand Prizes: 1st Place
UV Robot Design Contest
First 25 Qualified Contest Entries
UV Robot Design Contest

Things used in this project

Hardware components

NVIDIA Jetson AGX Xavier Developer Kit
Main processing unit of the Robot. ROS is running on this device and assists with all the decision making for the movement and control of the robot.
×1
ZED Stereo Camera
Front-facing Stereo Vision Camera for Object and Person Detection, as well as Navigation using SLAM
×1
Slamtec RPLIDAR A1
360 degree LIDAR for SLAM, integration with ROS
×1
Philips TUV 180W XPT SE UNP/20
$235/pc: UVC Light, 180W, Dimmable, Single Ended, Universal Operating Position
×4
Arduino Mega 2560
Arduino Mega 2560
Control of UV Tube servos. wheels and other various actuators.
×1
Cleaning indicator LED strip (1.178m )
Safety lights placed on the bottom of the robot which indicates if the robot is safe to operate.
×1
Cleaning indicator LED strip (0.549m)
Safety lights placed on the top of the robot which indicates if the robot is safe to operate.
×1
Intel wifi module
×1

Software apps and online services

Robot Operating System
ROS Robot Operating System
Main software used for control and manipulation of the robot.
OpenCV
OpenCV
Software used to perform active Computer Vision tasks like detecting presence of Humans/Animals as well as detection of other high risk surfaces.
Arduino IDE
Arduino IDE
Application used to code to control various components like servos and wheels of the Robot
Android Studio
Android Studio
Blender
Application used to design all the animations of Robot features and movements.
Adobe XD
Application used for designing a prospective User Interface for Robot control and monitoring.
Shapr3D
Application used for designing the Robot 3D CAD Models.
Procreate®
Application used for creating the Cover Image and other illustrations and diagrams.

Hand tools and fabrication machines

3D Printer (generic)
3D Printer (generic)
Soldering iron (generic)
Soldering iron (generic)
Multitool, Screwdriver
Multitool, Screwdriver
Hexagonal screws
Torque Wrench, 7/16 " Drive
Torque Wrench, 7/16 " Drive

Story

Read more

Custom parts and enclosures

Exploded View of the Robot

It depicts all the hardware components that make up the robot.

Tube Mechanism - Exploded View

This is the mechanism used to allow the tube to be rotated from 0-90degree with the help of a servo and a few gears

Schematics

Power supply system

Code

object_detection_ros.py

Python
It is a subscriber program which gets a camera image from the publisher and converts it into an OpenCV compatible format so as to look for different objects.
#Subscriber program to detect an object

#Import the required packages
import rospy
import cv2
import numpy as np
import imutils
import matplotlib.pyplot as plt
import cvlib as cv
from std_msgs.msg import String
from sensor_msgs.msg import Image
from cv_bridge import CvBridge, CvBridgeError
from cvlib.object_detection import draw_bbox
import sys

bridge = CvBridge()

def image_callback(ros_image):
  print ('Got an image')
  global bridge
  
  #convert ros_image into an opencv-compatible image
  try:
    cv_image = bridge.imgmsg_to_cv2(ros_image, "bgr8")
  except CvBridgeError as e:
    print(e)

  #Detecting an object 
  bbox, label, conf = cv.detect_common_objects(cv_image)
  output_image = draw_bbox(cv_image, bbox, label, conf)
  cv2.imshow('output_image', cv_image)

  #Stopping Program if living being detected
  if 'person' in label or 'potted plant' in label or 'pet' in label:
       break
     
def main(args):
  rospy.init_node('image_converter', anonymous=True)
  #image_topic="/usb_cam/image_raw"
  image_sub = rospy.Subscriber("/usb_cam/image_raw",Image, image_callback)
  try:
    rospy.spin()
  except KeyboardInterrupt:
    print("Shutting down")
  cv2.destroyAllWindows()

if __name__ == '__main__':
    main(sys.argv)

people_detect_ros.py

Python
Program to ensure the room is empty before the sanitization process begins.
#Subscriber program to detect a person 

#Import the required packages
import rospy
import numpy as np
import imutils
import cv2
from std_msgs.msg import String
from sensor_msgs.msg import Image
from cv_bridge import CvBridge, CvBridgeError
import sys

bridge = CvBridge()

# initialize the HOG descriptor/person detector
hog = cv2.HOGDescriptor()
hog.setSVMDetector(cv2.HOGDescriptor_getDefaultPeopleDetector())

def image_callback(ros_image):
    print ('Got an image')
    global bridge

    #convert ros_image into an opencv-compatible image
    try:
        cv_image = bridge.imgmsg_to_cv2(ros_image, "bgr8")
    except CvBridgeError as e:
        print(e)

    #detecting people in the image
    (rects, weights) = hog.detectMultiScale(cv_image, winStride=(4, 4),padding=(4,4), scale=1.01)
	
    #draw the bounding boxes
    for (x, y, w, h) in rects:
        cv2.rectangle(image, (x, y), (x + w, y + h), (0, 0, 255), 2)

    cv2.imshow('Image', cv_image)

    if (any(weights)):
        print ("PERSON DETECTED")
        break
   
def main(args):
    rospy.init_node('image_converter', anonymous=True)
    #image_topic="/usb_cam/image_raw"
    image_sub = rospy.Subscriber("/usb_cam/image_raw",Image, image_callback)
    try:
        rospy.spin()
    except KeyboardInterrupt:
        print("Shutting down")
        cv2.destroyAllWindows()

if __name__ == '__main__':
    main(sys.argv)

activity_main.xml

XML
Code for Android Studio for one of the screens of the application.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    >

    <ImageView
        android:layout_width="581dp"
        android:layout_height="915dp"
        android:scaleType="centerCrop"
        android:src="@drawable/design"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.069" ></ImageView>

    <EditText
        android:id="@+id/editTextTextPersonName"
        android:layout_width="97dp"
        android:layout_height="23dp"
        android:ems="20"
        android:inputType="textPersonName"
        android:text="Robot Status"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.226"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.216"
        android:textSize= "15sp" ></EditText>


    <EditText
        android:id="@+id/editTextTextPersonName2"
        android:layout_width="122dp"
        android:layout_height="33dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="Room Clean"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.808"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.219" ></EditText>

    <EditText
        android:id="@+id/editTextTextPersonName3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="Select Room"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.437"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.358" ></EditText>

    <EditText
        android:id="@+id/editTextTextPersonName4"
        android:layout_width="200dp"
        android:layout_height="26dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="Robot temperature"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.362"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.476" ></EditText>

    <EditText
        android:id="@+id/editTextTextPersonName5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="Battery Level"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.437"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.62" ></EditText>

    <EditText
        android:id="@+id/editTextTextPersonName6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="Cleaning Progress"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.437"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.819" ></EditText>

    <EditText
        android:id="@+id/editTextNumber2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="number"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.786"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:textSize= "20sp">

    <EditText
        android:id="@+id/editTextTextPersonName7"
        android:layout_width="60dp"
        android:layout_height="22dp"
        android:layout_marginBottom="368dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="50C"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.21"
        app:layout_constraintStart_toStartOf="parent" ></EditText>

    <EditText
        android:id="@+id/editTextTextPersonName8"
        android:layout_width="53dp"
        android:layout_height="19dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="80"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.826"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.624" ></EditText>

    <EditText
        android:id="@+id/editTextTextPersonName9"
        android:layout_width="48dp"
        android:layout_height="35dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="30"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.788"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.836" ></EditText>



    <RadioGroup
        android:layout_width="13dp"
        android:layout_height="17dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.702"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.268" ></RadioGroup>

    <RadioGroup
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.302"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@+id/radioButton"
        app:layout_constraintVertical_bias="0.262" ></RadioGroup>


</androidx.constraintlayout.widget.ConstraintLayout>

Mapping_the_room.py

Python
Program to map the room on a graph based on inputs from the robot..
from matplotlib import pyplot as plt

def getPoint(c):
    global x, y, flag
    if (c=='R' or c=='r'):
        flag+=1
    elif (c=='L' or c=='l') :
        flag-=1
    flag = flag % 4
   
    dist = int(input ("Distance : "))    
    if flag == 0:
        y+=dist
    elif flag == 1:
        x+=dist
    elif flag == 2:
        y-=dist
    elif flag == 3:
        x-=dist
    points.append ((x,y))
    X.append (x)
    Y.append (y)


x=y=0
X=[]
Y=[]
flag = 0
#0:forward; 1:right; 2:backwards; 3:left
points = []
points.append((x,y))
X.append (x)
Y.append (y)

c = input("Left/Right/Foward? ")
getPoint(c)

while (x!=0 or y!=0):
    c = input("Left/Right? ")
    getPoint(c)

print (X,Y) 
plt.plot(X,Y, scalex=True, scaley=True)
plt.show()

Obstacle_Detection

Python
Program used to steer the robot away from obstacles.
#!/usr/bin/env python

from __future__ import print_function

import rospy

from std_msgs.msg import Float64
from sensor_msgs.msg import LaserScan

import sys, select, termios, tty

msg = """
Reading from the keyboard !
---------------------------
Moving around:
   u    i    o
   j    k    l
   m    ,    .

For Holonomic mode (strafing), hold down the shift key:
---------------------------
   U    I    O
   J    K    L
   M    <    >


anything else : stop

q/z : increase/decrease max speeds by 10%

CTRL-C to quit
"""

moveBindings = {
        'i':(-1,0,1),
        'o':(-1,1,0),
        'j':(1,1,1),
        'l':(-1,-1,-1),
        'u':(-1,0,1),
        ',':(1,0,-1),
        '.':(0,1,-1),
        'm':(1,-1,0),  
        'O':(-1,1,0),
        'I':(-1,0,1),
        'J':(1,-2,1),
        'L':(-1,2,-1),
        'U':(0,-1,1),
        '<':(1,0,-1),
        '>':(0,1,-1),
        'M':(1,-1,0),  
    }

speedBindings={
        'q':(1.1,1.1),
        'z':(.9,.9),
    }

def vels(speed):
    return "currently:\tspeed %s " % (speed)


pub = None

def clbk_laser(msg):
    regions = {
        'r' : min(min(msg.ranges[0:78]),20),
        'fr' : min(min(msg.ranges[102:180]),20),
        'fl' : min(min(msg.ranges[182:258]),20),
        'l' : min(min(msg.ranges[282:360]),20),
        'bl' : min(min(msg.ranges[362:438]),20),
        'br' : min(min(msg.ranges[642:718]),20) 
    }

    take_action(regions)

def take_action(regions):
    msg = Twist()
   

    state_description = ''

    if regions['l']>1 and regions['fl']>1 and regions['fr']>1 and regions['r']>1: 
        state_description = 'case 1 - nothing'
        key='i'
    elif regions['l']>1 and regions['fl']>1 and regions['fr']>1 and regions['r']<1: 
        state_description = 'case 2 - right'
        key='j'

    elif regions['l']>1 and regions['fl']>1 and regions['fr']<1 and regions['r']>1: 
        state_description = 'case 3 - front right'
        key='j'

    elif regions['l']>1 and regions['fl']>1 and regions['fr']<1 and regions['r']<1: 
        state_description = 'case 4 - front right and right'
        key='j'

    elif regions['l']>1 and regions['fl']<1 and regions['fr']>1 and regions['r']>1: 
        state_description = 'case 5 - front left'
        key='l'

    elif regions['l']>1 and regions['fl']<1 and regions['fr']>1 and regions['r']<1: 
        state_description = 'case 6 - front left and right'
        key='o'

    elif regions['l']>1 and regions['fl']<1 and regions['fr']<1 and regions['r']>1: 
        state_description = 'case 7 - front right and front left'
        key='l'

    elif regions['l']>1 and regions['fl']<1 and regions['fr']<1 and regions['r']<1: 
        state_description = 'case 8 - front left, front right and right'
        key='j'

    elif regions['l']<1 and regions['fl']>1 and regions['fr']>1 and regions['r']>1: 
        state_description = 'case 9 - left'
        key='l'

    elif regions['l']<1 and regions['fl']>1 and regions['fr']>1 and regions['r']<1: 
        state_description = 'case 10 - left and right'
        key='o'

    elif regions['l']<1 and regions['fl']>1 and regions['fr']<1 and regions['r']>1: 
        state_description = 'case 11 - left and front right'
        key='l'

    elif regions['l']<1 and regions['fl']>1 and regions['fr']<1 and regions['r']<1: 
        state_description = 'case 12 - left, front right and right'
        key='u'

    elif regions['l']<1 and regions['fl']<1 and regions['fr']>1 and regions['r']>1: 
        state_description = 'case 13 - left and front left'
        key='l'

    elif regions['l']<1 and regions['fl']<1 and regions['fr']>1 and regions['r']<1: 
        state_description = 'case 14 - left, front left and right'
        key='o'
    elif regions['l']<1 and regions['fl']<1 and regions['fr']<1 and regions['r']>1: 
        state_description = 'case 15-left, front left and front right'
        key='l'
    else: 
        state_description = 'case 16 - All directions'
        key='m' 
    
    return key
    rospy.loginfo(state_description)
    pub.publish(msg)

def main():
    global pub
    
    sub = rospy.Subscriber('/uvrobot/laser/scan', LaserScan, clbk_laser)
    
    rospy.spin()

if __name__=="__main__":
    settings = termios.tcgetattr(sys.stdin)

    rospy.init_node('vel_Publisher')
    publ = rospy.Publisher('/open_base/left_joint_velocity_controller/command', Float64, queue_size=1)
    pubb = rospy.Publisher('/open_base/back_joint_velocity_controller/command', Float64, queue_size=1)
    pubr = rospy.Publisher('/open_base/right_joint_velocity_controller/command', Float64, queue_size=1)


    speed = 1.0
    x = 0
    y = 0
    z = 0
    status = 0

    try:
        print(msg)
        print(vels(speed))
        while(1):
            key = take_action(regions)
            if key in moveBindings.keys():
                x = moveBindings[key][0]
                y = moveBindings[key][1]
                z = moveBindings[key][2]
            elif key in speedBindings.keys():
                speed = speed * speedBindings[key][0]
       
                print(vels(speed))
                if (status == 14):
                    print(msg)
                status = (status + 1) % 15
            else:
                x = 0
                y = 0
                z = 0
                th = 0
                if (key == '\x03'):
                    break

            vell = Float64()
	    velb = Float64()
	    velr = Float64()
	
	    vell = x*speed
	    velb = y*speed
	    velr = z*speed

	    publ.publish(vell)
	    pubb.publish(velb)
	    pubr.publish(velr)

    except Exception as e:
        print(e)

    finally:
        vell = Float64()
	velb = Float64()
	velr = Float64()
	
	vell = 0.0
	velb = 0.0
	velr = 0.0

	pubb.publish(vell)
	publ.publish(velb)
	pubr.publish(velr)

Fluoresce Robot

Credits

Kevin R

Kevin R

3 projects • 2 followers
Currently working as an Electronics Engineer | MS IC Design Graduate from Imperial College London | Electrical & Electronic Engineer
Nikhil Binu Thomas

Nikhil Binu Thomas

1 project • 2 followers
Electrical Design Engineer
Clayton Pereira

Clayton Pereira

1 project • 3 followers
Senior Year Electronics and Communication Student at BITS Pilani, Dubai.
Tanya Mathur

Tanya Mathur

1 project • 3 followers
Final Year of Computer Science Engineering at BITS Pilani, Dubai
Nikita Kulkarni

Nikita Kulkarni

1 project • 0 followers
Final Year Biotechnology Student
Suhail Nazeer

Suhail Nazeer

1 project • 0 followers
Senior Year of Electrical and Electronic Engineering at BITS Pilani, Dubai
Thanks to Yug Ajmera.

Comments

Awards
Grand Prizes: 1st Place
UV Robot Design Contest
First 25 Qualified Contest Entries
UV Robot Design Contest
Related channels and tags
  • Android
  • NVIDIA
  • OpenCV
  • Robotics
  • Robotics
  • ROS