Emotionally Intelligent Flower Raising Device by Bob Tianqi Wei

Introduction

Many people around me have a hobby of raising flowers. Whether in the school dormitory, office, or balcony at home, plants are important partners of people.
I have conducted research on people's habits and behaviors in raising flowers. Usually, people's direct operation on potted plants is to water, fertilize, and loosen the soil on time; Different species have different demands on environmental conditions such as light, air, temperature, and humidity. Occasionally, there may be operations such as pest control, disease management, and deciduous tissue removal.

Mind Map

Design Positioning

In the process of raising flowers, not everyone can take good care of all the plants all the time. Different species have their own unique characters and needs.

Plants are my pets and friends. I believe plants are capable of expressing their needs for water and fertilizer like animals. They can recognize the most adequate environment at home and survive on their own.

Divergence and Model Making

product sketch

functional model sketch

Functional Model Drawings in AutoCAD

Laser Cutting

upper and lower panels

Assembly of functional models

import RPi.GPIO as GPIO
import time
from random import random

IN1 = 20
IN2 = 21
IN3 = 19
IN4 = 26
ENA = 16
ENB = 13

key = 8

LdrSensorLeft = 7
LdrSensorRight = 6

AvoidSensorLeft = 12
AvoidSensorRight = 17

def init():
    global pwm_ENA
    global pwm_ENB
    GPIO.setup(ENA,GPIO.OUT,initial=GPIO.HIGH)
    GPIO.setup(IN1,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(IN2,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(ENB,GPIO.OUT,initial=GPIO.HIGH)
    GPIO.setup(IN3,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(IN4,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(key,GPIO.IN)
    GPIO.setup(AvoidSensorLeft,GPIO.IN)
    GPIO.setup(AvoidSensorRight,GPIO.IN)

    pwm_ENA = GPIO.PWM(ENA, 2000)
    pwm_ENB = GPIO.PWM(ENB, 2000)
    pwm_ENA.start(0)
    pwm_ENB.start(0)
    return pwm_ENA, pwm_ENB
    
def run():
    GPIO.output(IN1, GPIO.HIGH)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.HIGH)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(10)
    pwm_ENB.ChangeDutyCycle(10)

def back():
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.HIGH)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.HIGH)
    pwm_ENA.ChangeDutyCycle(8)
    pwm_ENB.ChangeDutyCycle(8)
   
def left():
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.HIGH)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(0)
    pwm_ENB.ChangeDutyCycle(8)

def right():
    GPIO.output(IN1, GPIO.HIGH)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(8)
    pwm_ENB.ChangeDutyCycle(0)

def spin_left():
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.HIGH)
    GPIO.output(IN3, GPIO.HIGH)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(8)
    pwm_ENB.ChangeDutyCycle(8)

def spin_right():
    GPIO.output(IN1, GPIO.HIGH)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.HIGH)
    pwm_ENA.ChangeDutyCycle(8)
    pwm_ENB.ChangeDutyCycle(8)
   
def brake():
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.LOW)

def random_walk():
    randomVal = random()
    if randomVal < 0.1:
        spin_left()
    elif randomVal < 0.9:
        run()
    else:
        spin_right

import RPi.GPIO as GPIO
import time

IN1 = 20
IN2 = 21
IN3 = 19
IN4 = 26
ENA = 16
ENB = 13

key = 8

#TrackSensorLeftPin1 TrackSensorLeftPin2 TrackSensorRightPin1 TrackSensorRightPin2
#      3                 5                  4                   18
TrackSensorLeftPin1  =  3  
TrackSensorLeftPin2  =  5   
TrackSensorRightPin1 =  4   
TrackSensorRightPin2 =  18  

GPIO.setmode(GPIO.BCM)

GPIO.setwarnings(False)

def init():
    global pwm_ENA
    global pwm_ENB
    GPIO.setup(ENA,GPIO.OUT,initial=GPIO.HIGH)
    GPIO.setup(IN1,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(IN2,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(ENB,GPIO.OUT,initial=GPIO.HIGH)
    GPIO.setup(IN3,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(IN4,GPIO.OUT,initial=GPIO.LOW)
    GPIO.setup(key,GPIO.IN)
    GPIO.setup(TrackSensorLeftPin1,GPIO.IN)
    GPIO.setup(TrackSensorLeftPin2,GPIO.IN)
    GPIO.setup(TrackSensorRightPin1,GPIO.IN)
    GPIO.setup(TrackSensorRightPin2,GPIO.IN)

    pwm_ENA = GPIO.PWM(ENA, 2000)
    pwm_ENB = GPIO.PWM(ENB, 2000)
    pwm_ENA.start(0)
    pwm_ENB.start(0)
	
def run(leftspeed, rightspeed):
    GPIO.output(IN1, GPIO.HIGH)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.HIGH)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(leftspeed)
    pwm_ENB.ChangeDutyCycle(rightspeed)

def back(leftspeed, rightspeed):
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.HIGH)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.HIGH)
    pwm_ENA.ChangeDutyCycle(leftspeed)
    pwm_ENB.ChangeDutyCycle(rightspeed)
	
def left(leftspeed, rightspeed):
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.HIGH)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(leftspeed)
    pwm_ENB.ChangeDutyCycle(rightspeed)

def right(leftspeed, rightspeed):
    GPIO.output(IN1, GPIO.HIGH)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(leftspeed)
    pwm_ENB.ChangeDutyCycle(rightspeed)
	
def spin_left(leftspeed, rightspeed):
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.HIGH)
    GPIO.output(IN3, GPIO.HIGH)
    GPIO.output(IN4, GPIO.LOW)
    pwm_ENA.ChangeDutyCycle(leftspeed)
    pwm_ENB.ChangeDutyCycle(rightspeed)

def spin_right(leftspeed, rightspeed):
    GPIO.output(IN1, GPIO.HIGH)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.HIGH)
    pwm_ENA.ChangeDutyCycle(leftspeed)
    pwm_ENB.ChangeDutyCycle(rightspeed)

def brake():
    GPIO.output(IN1, GPIO.LOW)
    GPIO.output(IN2, GPIO.LOW)
    GPIO.output(IN3, GPIO.LOW)
    GPIO.output(IN4, GPIO.LOW)

def key_scan():
    while GPIO.input(key):
        pass
    while not GPIO.input(key):
        time.sleep(0.01)
        if not GPIO.input(key):
            time.sleep(0.01)
	    while not GPIO.input(key):
	        pass

time.sleep(2)

try:
    init()
    key_scan()
    while True:

        TrackSensorLeftValue1  = GPIO.input(TrackSensorLeftPin1)
        TrackSensorLeftValue2  = GPIO.input(TrackSensorLeftPin2)
        TrackSensorRightValue1 = GPIO.input(TrackSensorRightPin1)
        TrackSensorRightValue2 = GPIO.input(TrackSensorRightPin2)


        if (TrackSensorLeftValue1 == False or TrackSensorLeftValue2 == False) and  TrackSensorRightValue2 == False:
           spin_right(100, 100)
	   time.sleep(0.08)
 

        elif TrackSensorLeftValue1 == False and (TrackSensorRightValue1 == False or  TrackSensorRightValue2 == False):
           spin_left(100, 100)
	   time.sleep(0.08)
  

        elif TrackSensorLeftValue1 == False:
           spin_left(80, 80)
     

        elif TrackSensorRightValue2 == False:
           spin_right(80, 80)
   
        elif TrackSensorLeftValue2 == False and TrackSensorRightValue1 == True:
           left(0,90)
   
        elif TrackSensorLeftValue2 == True and TrackSensorRightValue1 == False:
           right(90, 0)
   
        elif TrackSensorLeftValue2 == False and TrackSensorRightValue1 == False:
	   run(100, 100)
   
       
except KeyboardInterrupt:
    pass
pwm_ENA.stop()
pwm_ENB.stop()
GPIO.cleanup()

random walk testing

Obstacle Avoidance Testing

Return to Host

import cv2

if __name__ == '__main__':
    cap = cv2.VideoCapture(0)
    cap.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter.fourcc('M', 'J', 'P', 'G')) 
    cap.set(cv2.CAP_PROP_FRAME_WIDTH, 640)
    cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)
    width = cap.get(3)
    height = cap.get(4)
    try:
        while True:
            ret, frame = cap.read()

            if not ret:
                print("get camera frame is empty")
                break

            str = "image"
            cv2.imshow(str, frame)
            key = cv2.waitKey(10) & 0xff
            if key == ord('q'):
                break
    finally:
        cap.release()
        cv2.destroyAllWindows()

import PCF8591 as ADC
import RPi.GPIO as GPIO
import time

DO = 17
GPIO.setmode(GPIO.BCM)

def setup():
	ADC.setup(0x48)
	GPIO.setup(DO, GPIO.IN)


def read():
	photoresistor = ADC.read(0)
	humidity = ADC.read(3)
	print("Photoresistor: {}\tHumidity: {}" \
		.format(photoresistor, humidity))
	return photoresistor, humidity


def loop():
	while True:
		read()
		
		time.sleep(0.5)

if __name__ == '__main__':
	try:
		setup()
		loop()
	except KeyboardInterrupt: 
		pass

Light Sensor Testing
(analog to digital signals conversion)

Soil Humidity Sensor
And Watering

Camera and Mobile App Testing

Demonstration video of the functional model

Source code and flowchart:

#Emotionally Intelligent Flower Raising Device by Bob Tianqi Wei

import motion
import humidity
import getCamera
import temperature
import RPi.GPIO as GPIO
import time


LIGHT_LIM, DRY_LIM = 10, 100
LIGHT_INF, DRY_INF = 254, 150

IN1 = 20
IN2 = 21
IN3 = 19
IN4 = 26
ENA = 16
ENB = 13

LED_R = 22
LED_G = 27
LED_B = 24

key = 8

AvoidSensorLeft = 12
AvoidSensorRight = 17

GPIO.setmode(GPIO.BCM)

GPIO.setwarnings(False)


def init():
    global pwm_ENA
    global pwm_ENB
    pwm_ENA, pwm_ENB = motion.init()
    humidity.setup()
    temperature.setup()
    GPIO.setup(LED_R, GPIO.OUT)
    GPIO.setup(LED_G, GPIO.OUT)
    GPIO.setup(LED_B, GPIO.OUT)
    

def water():
    print("Get some water!")
    pass

try:
    init()
    lightTime, dryTime = 0, 0
    getLight = True
    while True:
        photoresistor, humidityValue = humidity.read()
        temperatureValue = temperature.get()

        LeftSensorValue  = GPIO.input(AvoidSensorLeft);
        RightSensorValue = GPIO.input(AvoidSensorRight);

        if humidityValue > DRY_INF:
            dryTime += 1
        if dryTime > DRY_LIM:
            water()
            dryTime = 0
        
        if getLight:
            if photoresistor < LIGHT_INF:
                lightTime += 1
        else:
            if photoresistor > LIGHT_INF:
                lightTime -= 1
        
        if getLight:
            if lightTime > LIGHT_LIM:
                getLight = False
            if photoresistor < LIGHT_INF:
                # White: Need Light and has light. 
                GPIO.output(LED_R, GPIO.HIGH)
                GPIO.output(LED_G, GPIO.HIGH)
                GPIO.output(LED_B, GPIO.HIGH)
            else:
                # Blue: Need Light but no light. 
                GPIO.output(LED_R, GPIO.LOW)
                GPIO.output(LED_G, GPIO.LOW)
                GPIO.output(LED_B, GPIO.HIGH)
        else:
            if lightTime < 0:
                getLight = True
            if photoresistor < LIGHT_INF:
                # RED: Don't need light but has light. 
                GPIO.output(LED_R, GPIO.HIGH)
                GPIO.output(LED_G, GPIO.LOW)
                GPIO.output(LED_B, GPIO.LOW)
            else:
                # Off: Don't need light and has no light. 
                GPIO.output(LED_R, GPIO.LOW)
                GPIO.output(LED_G, GPIO.LOW)
                GPIO.output(LED_B, GPIO.LOW)

        if LeftSensorValue == True and RightSensorValue == True:
            if (getLight and photoresistor < LIGHT_INF) or (not getLight and photoresistor > LIGHT_INF):
                motion.brake()
            else:
                motion.random_walk()   
        elif LeftSensorValue == True and RightSensorValue == False:
            motion.spin_left()
        elif RightSensorValue == True and LeftSensorValue == False:
            motion.spin_right()
        elif RightSensorValue == False and LeftSensorValue == False:
            motion.spin_right()  
        print("Light Time: {}\tDry Time: {}".format(lightTime, dryTime))
        # time.sleep(0.5)
       
except KeyboardInterrupt:
    pass

pwm_ENA.stop()
pwm_ENB.stop()
GPIO.cleanup()

Modeling and Rendering

3D modeling (Rhinoceros)

Rendering (Keyshot)

Output

Plants are no longer dispensable decorations. This machine enables plants to actively seek out suitable environments at home.

This device allows plants to interact with people and actively adapt to their environment at home, just like animals.

Product Example Video (Rendering)

Usage scenario: Home

Plants walk around the house, actively seeking light and turning pots to make plants grow evenly

Looking for shadows after the light illumination reaches its maximum

Return to the water tank (host) at night for watering and charging

Interact with users like animal pets
(voice, mobile app)

The camera identifies the plant species and finds the corresponding cultivation requirements in the database. It will record the growing status, and adjusts the cultivation plan and environmental conditions.

Renderings

Usage & Details

The water tank (host) can charge, water, and fertilize three potted plants simultaneously. After turning on the switch and placing the flowerpot next to the tank for device pairing, the flowerpot can automatically find the water tank.

Sensors, buttons, and status indicators are located at the top of the flowerpot, pointing to the plant in the middle, which can display the status of the plant.

In the middle of the water tank is the liquid fertilizer tank. The top and bottom of the tank are sloped so that the plant can be watered without opening the lid. Water can flow into the tank through the gap and evacuate from the bottom.

The water tank (host) is also the gateway to all smart planters. There are buttons and status indicators on it to indicate the status of the main unit and can be used to operate it.

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Emotionally Intelligent Flower Raising Device

ALL WORKS