x Carrier Final

8/7/2019 x Carrier Final

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GROUP ETP 40

6th APRIL 2011

3.15 PM

ETP 40 : X - Carrier


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Introduction Why X - Carrier

Problem Statement

Target Market

Background

Objectives

Mechanical Component Drawing

Product

Working Principles

Electronical Compo

nent

Testing And Measurement

Economic / Business Considerations

Recommendation

Conclusion

References



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EXPENDABLE

EXTRA LOAD

EXTRA-ORDINARY



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Specifically,

those involved mainly in business

sectorEg: courier-service, delivery-man,

grocery-man, cafeterias cleaner,

librarian.



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Professionals - heavy loads and incorrect

lifting and carrying techniques, could result

in muscular skeletal injuries to a persons

neck, shoulders and back. Portable carrier is notnew in our society.

Most of these designs involve mainly onthe

usage of our bare hands which still could

affect our body parts, flaws still exist.



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To design a compact and portable carrierthat is user-friendly and applicable to all

walks of life.

To reduce usage of energy from using ourbare hands.

To be able to carry a large amount of load

wit

hout

an

y difficult

ies.To prevent any long term strains to our

body.



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1 cm :10 cm



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Right arm

Mainframe

Left

arm

Sensor

with pad

LCD screen

Lock



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Pocket



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Steel is used as the skeleton of the

prototype

WHY STEEL?

Easily available

Affordable

Able to withstand heavy load



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Magnetic bar to hold the arm in

upright position

Extra padding on shoulders and

abdomen

Supporting frame alloy

Buckle to tightenthe belt



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WORKING PRINCIPLESP = F/A

Pressure is inversely propor

tional

toArea

Distribution of pressure onto abdomendecreases as area increases

More force or weight is sustained bythe abdomen

In comparison with using our wrist,arm and back



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FSR (Force-Sensitive Resistor) [Sensor]

LCDto display the weight [Indicator]

Buzzer to indicate maximum weight

[Indicator]

A single chip that control the circuit,

ATmega328 [Controller]



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FORCE SENSISTIVE RESISTOR(FSR)Can detect physical pressure and weightA resistor which changes its resistance

value by force (ohms )Sensitive: can even detect small force

The FSR sensor



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Measurement ofFSR sensor

-the resistance value is inversely

proportional to the force

-the voltage changes on the FSR

will be processed by theprocessor to convert itto force

digital data

Force(N)

FSRResistance

Voltage

None Infinite 0V

0.2 N 30K 1.3 V

1 N 6 K 3.1 V

10 N 1 K 4.5 V

100 N 250 4.9 VETP 40 : X - Carrier


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Atmel ATmega328, AVR 8-Bit

Microcontroller Family

A programmable single chip microcontroller

Voltage from FSR is converted to digital by

the microcontroller

LCD display and Buzzer connected to the

digital output of microcontroller

Complete control sequence are written in Clanguages



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MECHANICAL COST RM 109

ELECTRONIC COST RM 120

OPERATIONAL COST

(9 r ll)

RM 5



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More compact

Lighter material

Ergonomic designthat is morecomfortable eg: extra padding.

More futuristic value

Eg: Use atransmi

tter a

nd receiverbetween circuit



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THANK YOU


x Carrier Final

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