# Presentation: 149098

## MArMET: Modular Autonomous Meteorology Station

- <date/time>

- _MArMET_: Modular Autonomous Meteorology Station

- Sixth-monthly review

## MArMet Overview

- <date/time>

- The project objective is to significantly reduce the total resource footprint of an existing meteorological station design, so that it may be accommodated with reduced risk and cost, and with increased science return on Mars Exploration Program (MEP) landers, rovers, and aerial platforms
- Modular design
- Internal CPU, Memory and Power Control resources

## Progress Overview

- <date/time>

- Only 2 milestones met
_***Money ‘touched-down’ 6 months after equivalent JPL projects!***_
- Had to focus on definitions and software not hardware
- Hardware procurements well behind schedule
- Personal spin up well behind schedule
- People don't hang around if there is no obvious prospect of being employed!
- Comfortable enough with design progress to include IDPU in an MSL proposal

## Inter-module bus defined

- <date/time>

- Selected RS485 over SPI
- better standard
- better signal resiliency
- fitted more closely to older instruments modules
- Higher level protocol defined
- based on simple addressable packets
- flexibility: least change needed from older instrument modules

## Micro Schedule (1) (Completed)

- <date/time>

- Micro schedule language 1 definition - completed
- Compiler Version 1 - completed
- Similar to that outlined in proposal
- Simple pair of frequencies for each ‘schedule element line’ SELs
- SELs grouped into ‘schedule elements’
- ‘schedule elements’ grouped into a complete schedule
- Micro scheduler Version 1 - completed
- Language and output ‘time graph’ too simplistic for proposed ‘real application’ (MSL)

## Micro Schedule (2)

- <date/time>

- Version 2 - in progress
- Adding variable epochs (*i.e.* ‘dawn, dusk, etc’)
- NAIF tools.
- Adding local times (*i.e.* a distinction between Mars Hour and Earth Hour)
- Adding integration times.
- Adding a ‘run harness’ pseudo spacecraft sequence to drive :
- Power model
- Data volume model
- Identified need to specify power and data requirements

## Example V2 Schedule

- <date/time>

- schedule demo1
-   element background
-     acquire MTfluxes at 10 hz for 1 m every 0.1666 hr continuously integrate 1m
-     acquire VnVfluxes at 10hz for 1m every 0.5 hr continuously integrate 1m
-     acquire AtmRadiances at 1hz continuously integrate 30s
-     acquire OtherRadiances at 0.5hz continuously integrate 10m
-     acquire Winds at 1hz continuously integrate 10s
-     acquire VnVfluxes at 10hz continuously from ( dawn - 0.1666 hr )
-                                        to ( dawn + 0.5 hr ) integrate 1m
-     acquire VnVfluxes at 10hz continuously from ( dusk - 0.1666 hr )
-                                        to ( dusk + 0.5 hr ) integrate 1m
-     acquire AtmRadiances at 4hz continuously from ( dawn - 0.1666 hr )
-                                          to ( dawn + 0.5 hr ) integrate 2s
-   end element
-   element diagnostic
-     acquire Diagnostic 1 hz for 10s once
-   end element
-   element turbulence
-     acquire MTfluxes at 50 hz for 1m once from now
-     acquire MTfluxes at 10 hz for 2m once from now
-     acquire Vapour at 10 hz for 2m once from now
-   end element
- end schedule

## FPGA Selection

- <date/time>

- Discussions with JPL Mission Assurance group
- Back to Xylinx after initially switching to Actel
- Market wide alert about Actel reliability
- Xylinx a little ‘rad soft’
- LEON should handle it
- other cores need beefing up
- New tools identified and spec’ed (18 months on from the proposal)
- Procurements ready to go once we find a grad student!

## IDPU RTOS

- <date/time>

- Acquired Sparc box to run tests on, while waiting on FPGAs
- No results yet.

## Data logging boards

- <date/time>

- Had to use what was around :
- PSOC - Recommend for prototyping!
- PIC - cheap and cheerful
- Acquired DigiQuartz pressure transducer (free)
- RTD Temperature measurement
- porting back to 8032

## Simulated Data (complete)

- <date/time>

- Year 3 simulated environmental data subtask moved forward and completed.
- Staff available
- Independent complete task
- Synergistic with other projects

- Temperature as fn. of height and local time for two different modeled locations / seasons

## Actuals

- <date/time>

|  | Regular account | Fabrication | Account total |
| --- | --- | --- | --- |
| Feb ‘04 | $4868.31 | $18,597 | $23,465.31 |
| Mar ‘04 | $5169.44 | $17,148.67 | $22,318.11 |
| Apr ‘04 | $5957.17 | $9719.65 | $15,676.82 |
| May ‘04 | $5615.13 | $13,234.72 | $18,849.85 |
| Jun ‘04 | $5344.86 | $9141.21 | $14,486.07 |

## Plan

- <date/time>

- Must find graduate student!
- FPGA ground work set - will procure as Grad student is found
- Focus on hardware, defocus software
- Next few months should see substantial progress