Daniel Nowak, Daniel Velez, Lorenzo Allas

Smartphone Infrared Thermometer

IntroductionProposed IdeaFunctional DescriptionConsidered DesignsDesign Constraints

Health/SafetyEconomical/EnvironmentalManufacturabilitySustainability

Professional Responsibilities/EthicsSummaryReferences

Outline

Infrared thermometers have many useschecking mechanical equipment or electrical circuit

breaker boxes or outlets for hot spotschecking heater or oven temperaturecalibration and control purposesdetecting hot spots / performing diagnostics in

electrical circuit board manufacturingchecking for hot spots in fire fighting situationsmonitoring materials in process of heating and

coolingresearch and development or manufacturing quality

control situationsRedundant to have a separate device

Introduction

Infrared thermometer accessory for smartphonesCase equipped with necessary components

Same physical principles as a hand-held infrared thermometerlens focuses infrared thermal radiation onto

detectorconverts radiant power to electrical signalsignal compensated for ambient temperature,

displayed in [F, C, K] using application

Proposed Idea

Planck Radiation Law

Stephan-Boltzmann Lawderived from Planck's radiation law by

integrating over all wavelengths

Wien’s Displacement Law

Proposed Idea

Top-level diagram

Functional Description

Does not include case; not really a “function”

Input Capture and Preprocessing

Functional Description

Digital Signal Processing and Temperature Calculation

Functional Description

Application

Functional Description

Design 1:

Considered Designs

Design 2:

Considered Designs

Not a health or safety issue

Not a necessity

ROHS compliant

Environmentally Friendly

Manufactured components should come in bulk

Design Constraints

Should have a UL certificationElectrostatic discharge compliantElectromagnetic compatibility compliant

Software responsibilitiesPersonal information kept secureBe able to identify possible threats within the

program

Professional Responsibilities/Ethics

Infrared thermometer has many uses

Product is low in cost and easy to manufacture

Wide range of consumers

Potential to be expanded for other uses

Will be compatible with current phones

Summary

www.omega.comwww.pcb.netwww.ti.comwww.fluke.comwww.exergen.com

References