Autonom ous Refrigerator Vincius Bazan Adam Jerozolim Luiz - - PowerPoint PPT Presentation

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Autonom ous Refrigerator Vincius Bazan Adam Jerozolim Luiz - - PowerPoint PPT Presentation

Jun 24, 2023 36 likes •398 views

Autonom ous Refrigerator Vincius Bazan Adam Jerozolim Luiz Jollembeck I ntroduction Components Circuits Coding Marketing Conclusion I ntroduction Uses Specimen and Culture Refrigerators can be found in many industries including

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SLIDE 1

Autonom ous Refrigerator

Vinícius Bazan Adam Jerozolim Luiz Jollembeck

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SLIDE 2

I ntroduction

I ntroduction Components Circuits Coding Marketing Conclusion

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SLIDE 3

Uses

Specimen and Culture Refrigerators can be found in many industries including

  • Laboratory
  • University
  • Research

Institution

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SLIDE 4

Possibilities

W hy Use Tem perature Control?

 Culture Storage  Experiment

preparation

 Specimen harvesting  Culture Growth  Research  Environmental

Simulation

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SLIDE 5

Draw backs

Tem perature Control Draw backs

 Requires expensive

equipment

 Constant

monitoring required

 Around the clock

  • n-call researcher

 Need to work

around specimen temperature

 Require constant

sample checking

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SLIDE 6

I NTRODUCI NG THE AUTONOMOUS REFRI GERATOR ROBOT

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SLIDE 7

Com ponents

Introduction Com ponents Circuits Coding Marketing Conclusion

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SLIDE 8

Photoresistor

  • Variable Resistor
  • Changes

Resistance with light

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SLIDE 9

Therm istor

  • Variable Resistor
  • Changes

Resistance with Temperature

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SLIDE 10

H- Bridge

  • Used to control

a high current device

  • Can control

current in two directions for Dc motor control

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SLIDE 11

Circuits

Introduction Components Circuits Coding Marketing Conclusion

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SLIDE 12

Button Circuit

  • Vdd pulls the

Basic Stamp normally high

  • The switch is NO
  • When the button

is pressed the pin goes to ground and BS senses it as a low

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SLIDE 13

Parallax LCD

  • Interacts with

the Basic Stamp using only one Pin

  • Can display

information about program selection, can location and temperatures

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SLIDE 14

H- Bridge

  • Uses 2 BS pins

per motor

  • Isolated BS

voltage from external source

  • External voltage

needs to be higher than BS 5v to activate the MOFSETSs

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SLIDE 15

Servo Motors

  • Can control

speed, location and position with one BS pin

  • Can operate

using BS current and voltage

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SLIDE 16

RC Circuit

  • Used to measure the

resistance of a variable resistor with basic stamp

  • Used for

photoresistor and thermistor

  • Capacitor sizing is

used to calibrate the range of resistance

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SLIDE 17

Op- Am p

  • Used in conjunction

with the photoresistor

  • Sends either Vss or

Vdd to BS depending

  • n resistance in the

photoresistor

  • Used to stop the

robot quickly on the rails with only a small change in resistance

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SLIDE 18

Coding

Introduction Components Circuits Coding Marketing Conclusion

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SLIDE 19

Main

  • Sets values for

important variables

  • Calls starting

functions

  • Branches to selected
  • ption
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SLIDE 20

Start

  • Shows the options
  • Asks user to choose
  • ne
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SLIDE 21

Option

  • Reads buttons
  • Displays the

function selected

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SLIDE 22

Check Cans

  • Detects if there are

cans in the positions

  • Saves positions in

variable POSCANS

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SLIDE 23

Arm Dow n/ Up

  • Controls the DC

motor of the arm

  • Different time if

holding can

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SLIDE 24

Close/ Open Claw

  • PWM pulses to

control claw’s servo

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SLIDE 25

Pausesub

  • Created to make

possible the sensing

  • f emergency button

while pausing

  • Pauses for 100

milliseconds and checks button

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SLIDE 26

Get Coldest

  • Piece of code similar in every function
  • Checks if current position has can
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SLIDE 27

Get Coldest

  • After sensing

temperature, records it and position if lowest

  • Variable Temp is

related to time of RC

  • circuit. The higher

the value, lower the temperature

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SLIDE 28

Get Coldest

  • Checks if current

position is last with cans

  • If so, goes to pick can

routine

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SLIDE 29

Pick Can

  • Checks if current

position is position of coldest can

  • If so, picks can and

goes back to start position

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SLIDE 30

First Cold Can

  • Similar to get coldest
  • Gets cold can as soon

as it finds it

  • If none is found

displays message

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SLIDE 31

Freezing

  • Similar to previous
  • Never gets a can
  • Shows warn if temperature is below freezing

temperature

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SLIDE 32

Marketing / Conclusion

Introduction Components Circuits Coding Marketing Conclusion

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SLIDE 33

I m provem ents

 More compact design can be achieved

with better materials

 All components need to be rated for

colder temperatures

 A larger sample size will need to be able

to be observed

 More precise

temperature reading capabilities.

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SLIDE 34

I m provem ents

 Additional sensors to make possible safe

reset:

  • Claw state
  • Arm position
  • End of trail
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SLIDE 35

Sum m ary

 I ncreased productivity  Lower operating costs for labs  More precise readings  Larger quantities capable of being

  • bserved

A product no lab w ill be w ithout!!!

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SLIDE 36

Thank you