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PeaPodTechnologies / PeaPod

PeaPod is a cloud-connected automated plant growth environment, designed as both a distributed phenotype research tool, and a precision agriculture food production.
MIT License
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[DESIGN] - Humidification #26

Open JLefebvre55 opened 3 years ago

JLefebvre55 commented 3 years ago

Completion is tracked in the linked PR.

Design Scope

Design an ultrasonic mesh nebulizer humidifier.

Purpose

The purpose of the humidification system is to generate dry water vapour, increasing the relative humidity of the growth environment on demand.

Function

Inputs:

Outputs:

Method

Process:

  1. Air is circulated throughout the environment for humidity homogeneity
  2. Relative humidity is measured, sent to automation
  3. Automation activates humidification system if below dead-zone

Features

Each feature should be added to relevant BoMs and CADs where applicable. Design decisions should be well-supported using relevant research and calculations, and should be documented in the Solution Overview. If a feature is complex enough, create a new issue for it using this template, and tag it here.

Validation

Must output clean, dry vapour.

Verification

List any applicable metrics with criteria/constraints:

  1. Max humidity output (maximize)
JLefebvre55 commented 3 years ago

Timing circuit complete and tested. See photos.

JLefebvre55 commented 3 years ago

Power circuit didn't work. Drew more than 1.5A at max and nearly overheated the MOSFET. Further testing is required.

JLefebvre55 commented 3 years ago

Considering this issue blocked until i figure out what the hell's wrong with the power circuit.

JLefebvre55 commented 2 years ago

Background

Reference design: https://www.youtube.com/watch?v=aKhPj7uFD0Y https://www.youtube.com/watch?v=OOZi3QnnDCo

Some potential discs: https://www.steminc.com/PZT/en/mist-generation-transducer

ToDo