Published February 12, 2022

Entry & Exit Tracker

A device that can ensure the number of people in the area is below a certain set threshold

IntermediateFull instructions provided251

Things used in this project

Hardware components

M5Stack FIRE IoT Development Kit (PSRAM 2.0)

M5Stack Time-of-Flight (ToF) VL53L0X Laser Ranging Unit (MCP4725/)

M5Stack RGB Unit with NeoPixel RGB LED (SK6812)

M5Stack Mini RFID Unit RC522 Module Sensor

M5Stack I2C Hub 1 to 6 Expansion TCA9548A Module

M5Stack I/O Hub 1 to 6 Expansion

SG90 Micro-servo motor

Story

Driving Question

How can we create a device that can track and limit the number of people entering and exiting locations like supermarket and storage room?

Project Introduction

This project aims to counter the existing problems we face during this Covid-19 pandemic. By allowing businesses to automatically track and monitor the number of people in an enclosed area such as the supermarket to abide the rules set to quell the spread of Covid-19. In this period where the virus is getting more potent, this device can help maintain the number of people in the area at one time. Thus, being a key part of how supermarkets are managed.

Research Background

By ensuring the number of people in the area is below a certain set threshold
How can we implement a device that can track those inside an area while ensuring that after the threshold is reached, no entry is permitted.
The occupancy limit for malls and large standalone stores4 is one person per 10 sqm of Gross Floor Area (GFA).
Food & beverage (F&B) establishments, retail establishments and lifestyle-related services currently in operation must implement SMMs, as required by the Ministry of Manpower (MOM) and comply with the COVID-19 (Temporary Measures) (Control Order) Regulations 2020

Video for Entry & Exit Tracker

Link: https://youtu.be/d9PuOaX-718

FlowChart

Summary of Process

Code

Entry & Exit Tracker (UI Flow)

from m5stack import *
from m5ui import *
from uiflow import *
import time
import unit

setScreenColor(0x000000)
pahub2 = unit.get(unit.PAHUB, unit.PORTA)
rfid4 = unit.get(unit.RFID, unit.PAHUB0)
rfid5 = unit.get(unit.RFID, unit.PAHUB5)
pbhub1 = unit.get(unit.PBHUB, unit.PAHUB2)
servo0 = unit.get(unit.SERVO, unit.PORTB)
tof0 = unit.get(unit.TOF, unit.PAHUB4)
tof1 = unit.get(unit.TOF, unit.PAHUB1)


NUM = None


NUMBER = M5TextBox(76, 92, "NUM", lcd.FONT_DejaVu72, 0x31b538, rotate=0)
Situation = M5TextBox(13, 189, "Situation", lcd.FONT_DejaVu40, 0x286b3d, rotate=0)
RFID = M5TextBox(225, 11, "RFID CODE", lcd.FONT_Default, 0x3e974f, rotate=0)
label3 = M5TextBox(21, 45, "No. of people Allowed", lcd.FONT_DejaVu24, 0xfffbfb, rotate=0)
TOF = M5TextBox(33, 11, "TOF", lcd.FONT_Default, 0x327625, rotate=0)

from numbers import Number



def multiBtnCb_AB():
  global NUM
  NUM = (NUM if isinstance(NUM, Number) else 0) + -1
  NUMBER.setText(str(NUM))
  pass
btn.multiBtnCb(btnA,btnB,multiBtnCb_AB)

def multiBtnCb_BC():
  global NUM
  NUM = (NUM if isinstance(NUM, Number) else 0) + 1
  NUMBER.setText(str(NUM))
  pass
btn.multiBtnCb(btnB,btnC,multiBtnCb_BC)

def multiBtnCb_AC():
  global NUM
  NUM = 2
  NUMBER.setText(str(NUM))
  pass
btn.multiBtnCb(btnA,btnC,multiBtnCb_AC)


NUM = 2
NUMBER.setText(str(NUM))
servo0.write_angle(0)
while True:
  rgb.setColorAll(0x000000)
  if NUM > 0 and NUM < 2:
    if rfid4.isCardOn():
      RFID.setText(str(rfid4.readUid()))
      if (rfid4.readUid()) == '8843842f6' or (rfid4.readUid()) == 'f05ea9ad':
        speaker.tone(3000, 200)
        pbhub1.setColor(2, 0, 1, 0x009900)
        wait(1)
        pbhub1.setColor(2, 0, 1, 0x000000)
        servo0.write_angle(90)
        for count in range(20):
          TOF.setText(str(tof1.distance))
          if (tof1.distance) > 100:
            pbhub1.setColor(2, 1, 1, 0xffcc33)
            wait(0.5)
            pbhub1.setColor(2, 1, 1, 0x000000)
            wait(0.5)
          else:
            break
        wait(2)
        servo0.write_angle(0)
        NUM = (NUM if isinstance(NUM, Number) else 0) + -1
        NUMBER.setText(str(NUM))
      else:
        speaker.tone(200, 200)
        pbhub1.setColor(2, 2, 1, 0xff0000)
        wait(1)
        pbhub1.setColor(2, 2, 1, 0x000000)
    if rfid5.isCardOn():
      RFID.setText(str(rfid5.readUid()))
      if (rfid5.readUid()) == '8843842f6' or (rfid5.readUid()) == 'f05ea9ad':
        speaker.tone(3000, 200)
        pbhub1.setColor(3, 0, 1, 0x009900)
        wait(1)
        pbhub1.setColor(3, 0, 1, 0x000000)
        servo0.write_angle(90)
        for count2 in range(20):
          TOF.setText(str(tof0.distance))
          if (tof0.distance) > 100:
            pbhub1.setColor(3, 1, 1, 0xffcc33)
            wait(0.5)
            pbhub1.setColor(3, 1, 1, 0x000000)
            wait(0.5)
          else:
            break
        wait(2)
        servo0.write_angle(0)
        NUM = (NUM if isinstance(NUM, Number) else 0) + 1
        NUMBER.setText(str(NUM))
      else:
        speaker.tone(200, 200)
        pbhub1.setColor(3, 2, 1, 0xff0000)
        wait(1)
        pbhub1.setColor(3, 2, 1, 0x000000)
  else:
    if NUM == 0:
      if rfid5.isCardOn():
        RFID.setText(str(rfid5.readUid()))
        if (rfid5.readUid()) == '8843842f6' or (rfid5.readUid()) == 'f05ea9ad':
          speaker.tone(3000, 200)
          pbhub1.setColor(3, 0, 1, 0x009900)
          wait(1)
          pbhub1.setColor(3, 0, 1, 0x000000)
          servo0.write_angle(90)
          for count3 in range(20):
            TOF.setText(str(tof0.distance))
            if (tof0.distance) > 100:
              pbhub1.setColor(3, 1, 1, 0xffcc33)
              wait(0.5)
              pbhub1.setColor(3, 1, 1, 0x000000)
              wait(0.5)
            else:
              break
          wait(2)
          servo0.write_angle(0)
          NUM = (NUM if isinstance(NUM, Number) else 0) + 1
          NUMBER.setText(str(NUM))
        else:
          speaker.tone(200, 200)
          pbhub1.setColor(3, 2, 1, 0xff0000)
          wait(1)
          pbhub1.setColor(3, 2, 1, 0x000000)
    if NUM == 2:
      if rfid4.isCardOn():
        RFID.setText(str(rfid4.readUid()))
        if (rfid4.readUid()) == '8843842f6' or (rfid4.readUid()) == 'f05ea9ad':
          speaker.tone(3000, 200)
          pbhub1.setColor(2, 0, 1, 0x009900)
          wait(1)
          pbhub1.setColor(2, 0, 1, 0x000000)
          servo0.write_angle(90)
          for count4 in range(20):
            TOF.setText(str(tof1.distance))
            if (tof1.distance) > 100:
              pbhub1.setColor(2, 1, 1, 0xffcc33)
              wait(0.5)
              pbhub1.setColor(2, 1, 1, 0x000000)
              wait(0.5)
            else:
              break
          wait(2)
          servo0.write_angle(0)
          NUM = (NUM if isinstance(NUM, Number) else 0) + -1
          NUMBER.setText(str(NUM))
        else:
          speaker.tone(200, 200)
          pbhub1.setColor(2, 2, 1, 0xff0000)
          wait(1)
          pbhub1.setColor(2, 2, 1, 0x000000)
  if NUM < 0 or NUM > 2:
    Situation.setText('Required Staff')
    speaker.tone(1800, 200)
    rgb.setColorAll(0xcc0000)
    wait(1)
    rgb.setColorAll(0x000000)
    NUMBER.setColor(0xcc0000)
    Situation.setColor(0xcc0000)
  if NUM > 0 and NUM <= 2:
    Situation.setText('Please Enter...')
    NUMBER.setColor(0x33cc00)
    Situation.setColor(0x33cc00)
  if NUM == 0:
    Situation.setText('Please Wait...')
    NUMBER.setColor(0xcc0000)
    Situation.setColor(0xcc0000)
  wait_ms(2)

Credits

EEP_C8_Group_4

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