---
# System prepended metadata

title: CityU Juneer Meeting Rundown
tags: [UR, ' Juneer 22']

---

---
tags: UR, Juneer 22
date: 27 Oct 2022
---
# CityU Juneer Meeting Rundown

[2021 Manual](https://files.materovcompetition.org/CompetitionArchives/2021/2021_EXPLORER_Manual_10May2021.pdf)
[2021 Archive](https://materovcompetition.org/content/2021-scoring-archive)

## Flow
- Setup zoom/discord livestream & record
- Team name?
    - [Examples](https://files.materovcompetition.org/CompetitionArchives/2021/2021WorldChampionshipEXPLORERTeamList.pdf)
- Task management invitation
- Confirm subteam composition
    - Workforce distribution?
- Company positions
- Setup documentation
- Submarine structure
    - Micro ROV
    - What parts to design to complete tasks
- Decide on dates of future meetings
    - Use Doodle
- Files of the base robot

## Meeting minutes
- ...
## Todo
- Design Daughterboard
- Design parts used for tasks
- Understand groundstation tether
- Design software and firmware to pilot the submarine
- Complete a technical report

## 2021 Tasks

### Overview
![](https://i.imgur.com/4TlGFty.png)
![](https://i.imgur.com/jKwUNsb.png)


- ## Main Tasks
    ![](https://i.imgur.com/Qj9jcfj.png)
    ![](https://i.imgur.com/Vwqxb4k.png)
    ![](https://i.imgur.com/XsEUsqE.png)
    ![](https://i.imgur.com/yzdfx9R.png)
    
    ### Renew seabin
    ![](https://i.imgur.com/3XNSmMW.png)
    > **^ Seabin ^**
    > Replace catch bags
    > Reconnect power connectors
    
    ### Removing plastic
    > Remove 6 floating plastic debris from the surface
    > Remove a ghost net
    ![](https://i.imgur.com/3hcOdFh.png)
    > **^ Ghostnets ^**
    > Pull the pin of the ghost net
    > Remove the ghostnet and pin from the water
    > Remove plastic debris from the bottom

    ### Coral Reef Inspection
    
    ![](https://i.imgur.com/TAaN4fZ.png)
    
    > **^ "Coral Reef" ^**
    > [Task demonstration](https://vimeo.com/373234544)
    > From one side to another (black to black) while
        > 1. Keeping both blue pipes in view
        > 2. Keeping red pipes out of view
        
    > Mapping points of interests
    > ![](https://i.imgur.com/d3ZP3jC.png)

    ![](https://i.imgur.com/779tlOd.jpg)
    > **^ "Coral Colony" ^**
    > Use image recognition to determine the health of the coral colony
    > Compare current image to past data
        - Area of growth -> Green overlay
        - Area of damage/death -> Yellow overlay
        - Area of bleaching/blotching (discolour) -> Red overlay
        - Area of recovery (recolour) -> Blue overlay
    
    ### Propagating corals
    > Remove 2 coral fragments (pipes) from a structure
    > Insert 2 coral fragments into vertical pipe of designated area
    
    ### Culling sea stars
    > Attach injection device of Velcro hooks to the Velcro loops on the sea stars
    > Must remain attached for 10 seconds after release
    > To be clarified
    
    ### Collecting sponge sample
    > Sponge is made of 3 couplings with weight inside
    > They are stacked on top of each other
    > Collect ONLY the topmost coupling
    > - The bottom two couplings MUST NOT be knocked over
    > 
    > Return the sample to the surface

    ### Retreiving sediment sample from drain pipe
    ![](https://i.imgur.com/nTWG842.png)
    > **^ 6-inch CorexDrain pipe ^**
    > Does not curve
    > Low light level
    >
    >Sediment sample is made of 1 pipe with 2 end caps attached to each end
    > 32cm rope as grab point
    > Build micro ROV to retrieve the sample
    > Return sample to surface
    > Our people retrieve a sheet of paper inside the sediment
    > Compapre the graph with known chemical contaminants
    > ![](https://i.imgur.com/6XcWnUW.png)

    > Determine the type of contaminants
    
    ### Estimating the number of mussels in mussel bed
    ![](https://i.imgur.com/v6yJJCk.jpg)
    > **^ Mussels ^**
    
    ![](https://i.imgur.com/Bp1ICaV.png)
    
    > **^ Mussel bed ^**
    > Simulated mussel bed
        > - A square of plastic
        > - Small & painted plastic disks as "mussels"
    > Place a self-designed quadrat with 50x50cm inner dimensions
        ![](https://i.imgur.com/Hw715ej.png)
    > Count the number of mussels inside the quadrat
    > Judges give us dimensions of the mussel bed
    > We estimate the number of mussels in the bed
    > We calculate the total amount of water filtered by the mussel bed every hour
    > Report to station judge
    > 
    > Example:
    > - We counted 7 mussels in our 50x50cm quadrat
    > - Given the overall size of mussel bed is 4300x800cm
    > - Estimate the total number of mussels as 9632
    > - Calculate the total amount of water filtered as 9343.04L/hr if the given filtration rate is 0.97L/hr
    
    ### Eel restoration
    ![](https://i.imgur.com/YlIFpGz.png)
    > **^ Eel trap ^**
    > Remove a trap full of eels
    > Return the trap to surface
    > Pickup empty trap on the surface, side of the pool
    > place the empty eel trap in designated area on the bottom
    
    ### Photomosiac of subway car submerged to create an artificial reef
    > TODO
    > Refer to page 43-44 of manual
- ## Secondary Tasks
    ![](https://i.imgur.com/dDqlpcI.png)
    ![](https://i.imgur.com/Yj2IdTh.png)
    ![](https://i.imgur.com/17quaK4.png)
    ![](https://i.imgur.com/cFNLMo5.png)
    ![](https://i.imgur.com/Det9iHy.png)


- ## Constraints
    ![](https://i.imgur.com/n0CO5GZ.png)
    ![](https://i.imgur.com/bBCevNc.png)

- ## Safety
    ![](https://i.imgur.com/li80IEa.png)
    ![](https://i.imgur.com/ebQRvam.png)
    ![](https://i.imgur.com/KHF39Rz.png)
    ![](https://i.imgur.com/zIgrprB.png)


- ## Technical Report
    ![](https://i.imgur.com/hk12bwX.png)
    ![](https://i.imgur.com/aCe1NMT.png)
    ![](https://i.imgur.com/E628OnM.png)