Objective is to create a field deployable automated CO2 and N2O gas trapping device

Trapping events occur every four hours

Traps replaced after one month

Components

Flux Chamber

Multiple Sub-chambers

Desiccant Trap

CO2 Chemical Trap

N2O Molecular Sieve Trap

CO2 Molecular Sieve Trap

Rain-water Drop System

ValvesManualSolenoid

PumpFlow Rate: 130 mL/min

Servo MechanismMotor

Fan

Materials in contact with the gases must be chemically inert and gas impermeableOuter Casing and Sub-chambers

White PVC – avoiding the greenhouse effectDesiccant Trap

Nafion TubingCO2 Chemical Trap

304 Stainless Steel TubingCarbosorb

CO2 and N2O Traps 304 Stainless Steel TubingMolecular Sieve 5A

TubingPEEK

Assembly Criteria – small profile, sturdy, and easy to use

Airtight System Fittings and Adapters

CAD Drawings

Machined in the ME Shop

Control of servos, solenoids, circulation fans, pumps

State machine pertaining phases of device operation

Error checking

Sensors provide information about device functionality

Allows for quick repair, operation during non critical failure

Governed by Microcontroller

Programmable System on Chip (PSoC)

Visual, code-free embedded design

C language base

Manually edit code

CY3214-PSoCEvalUSB

Demands of system

Operates unattended for weeks

Hours between samples

Microcontroller very demanding

The external timer

Battery decision

All-Battery.com

CO2 and N2O levels will be used to determine impact of farmingThis will facilitate carbon credit trading on global scaleProfitable to farmersReduces wasteCost of end product is lowWill promote ecologically friendly farming practicesQuestions?