MetBox (Meteorological Box): Difference between revisions
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* A [https://wiki.seeedstudio.com/Grove_LoRa_E5_New_Version/ Grove - Wio-E5] (uart) is used for data transfer through '''LoRaWAN''' with the [https://www.taoglas.com/product/860-928mhz-ism-lora-compact-flexible-pcb-antenna/ FXP890.07.0100C] antenna. | * A [https://wiki.seeedstudio.com/Grove_LoRa_E5_New_Version/ Grove - Wio-E5] (uart) is used for data transfer through '''LoRaWAN''' with the [https://www.taoglas.com/product/860-928mhz-ism-lora-compact-flexible-pcb-antenna/ FXP890.07.0100C] antenna. | ||
* The controller is an Arduino nano IoT 33. | * The controller is an Arduino nano IoT 33. | ||
<gallery> | <gallery mode="packed-hover"> | ||
File:V1B.jpg|MetBox - Version 1 | File:V1B.jpg|MetBox - Version 1 | ||
File:A-0042.jpg|MetBox - Version 1 Technical Drawing | File:A-0042.jpg|MetBox - Version 1 Technical Drawing | ||
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[[File:Metbox_v1_circuit.jpg|frameless]] | [[File:Metbox_v1_circuit.jpg|frameless]] | ||
== Measurement Parameters | == Measurement Parameters == | ||
{| class="wikitable" | {| class="wikitable" | ||
!SENSOR PARAMETER | !SENSOR PARAMETER | ||
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Wind directions shown are '''where the wind comes from''', according to the standard meteorological convention (e.g., 0° = wind from the North, 90° = from the East, etc.). | Wind directions shown are '''where the wind comes from''', according to the standard meteorological convention (e.g., 0° = wind from the North, 90° = from the East, etc.). | ||
== Technical Requirements for Operators | == Technical Requirements for Operators == | ||
=== Where to install the instrument on the ship? === | === Where to install the instrument on the ship? === | ||
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uart planned | uart planned | ||
=== Costs === | === Costs === | ||
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== Technichal Details == | == Technichal Details == | ||
== Development status == | == Development status == | ||
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=== Autonomous operation === | === Autonomous operation === | ||
== Data == | == Data == | ||
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Data is encoded to hexadecimal and sent via LoRaWan to a TTN project. Inside the TTN console, a javascript payload formatter decode the data and asigns the o2a tags, following [[LoraWan Data Flow|lorawan data flow]]. | Data is encoded to hexadecimal and sent via LoRaWan to a TTN project. Inside the TTN console, a javascript payload formatter decode the data and asigns the o2a tags, following [[LoraWan Data Flow|lorawan data flow]]. | ||
== How to install? == | == How to install? == | ||
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== Further details == | == Further details == | ||
Product | Product experts: Jochen Horstmann and Alejandro Ordóñez (HEREON) | ||
Latest revision as of 15:22, 2 January 2026
Status: Contents not yet checked by product owner
Description
[edit | edit source]The MetBox is a low cost low maintenance and high accuracy package to measure reliably the main essential meteorological parameters such as wind speed and direction, air temperature, humidity and atmospheric pressure.
Measurements are sampled by a microcontroller, then encoded and transmitted. The transmission channel used varies depending on the device version.
Version v0
[edit | edit source]The v0 was developed in August 2024. This revision included:
- An Arduino Micro to sample the measurements
- The Calypso ULP Standard wind sensor, set to uart interface
- BMP280 and SHT40 pressure and humidity sensors, integrated in an ENV IV
- Two communication interfaces were implemented
- A USB interface, extended with an active extender (for monitoring and firmware update)
- A Serial RS485 interface
- A POM housing
- Radiation guards made from PLM print material, with an additional coatin
-
MetBox - Version 0 -
MetBox - Version 0 Technical Drawing -
MetBox - Version 0 Exploded view
Version v1
[edit | edit source]Development of the version V1 was completed in May 2025. The changes introduced were:
- The housing was changed. This version is shorter than the previous,the electronics compartment is, however, wider.
- The housing is meant to be printed and assembled with M4 screws for stability.
- Pow input is connected via a M12 - 5 wire - panel mount connector.
- Sensors are interfaced with an i2c bus.
- A Grove - Wio-E5 (uart) is used for data transfer through LoRaWAN with the FXP890.07.0100C antenna.
- The controller is an Arduino nano IoT 33.
-
MetBox - Version 1 -
MetBox - Version 1 Technical Drawing -
MetBox - Version 1 Bottom assembly
Circuit schematic
[edit | edit source]
Measurement Parameters
[edit | edit source]| SENSOR PARAMETER | MANUFACTURER | MODEL | INTERFACE | UNIT | RANGE | ACCURACY | Registry UUID |
|---|---|---|---|---|---|---|---|
| AIR TEMPERATURE | Sensirion | SHT40 | i2c | °C | -40-125 | 0.2 | |
| ATMOSPHERIC PRESSURE | Bosch | BMP280 | i2c | hPa | 300-1100 | ~ ±1 hPa (abs)
± 0.12 hPa (relative) |
|
| HUMIDITY | Sensirion | SHT40 | i2c | % | 0-100 | 1.8 | |
| WIND SPEED | Calypso Instruments | ULP Standard | uart / i2c | m/s | 0.5 - 45 | ± 0.3 | |
| WIND DIRECTION | Calypso Instruments | ULP Standard | uart / i2c | ° (degrees) | 0-359 | ± 1 |
Note:
Wind directions shown are where the wind comes from, according to the standard meteorological convention (e.g., 0° = wind from the North, 90° = from the East, etc.).
Technical Requirements for Operators
[edit | edit source]Where to install the instrument on the ship?
[edit | edit source]Preferably on the main mast or at a high place where the air stream is not obstructed.
What power supply does the instrument require?
[edit | edit source]Version v1
[edit | edit source]6 - 21 VDC
Power consumption < 200 mW (unoptimized)
The connector selected is a m12 5 pole, panel mounted. The pinout is (also described in detail in the Circuit schematic section):
| Pole | Color | Description |
|---|---|---|
| 1 | brown | Not used |
| 2 | white | vcc |
| 3 | blue | gnd |
| 4 | black | can H (planned) |
| 5 | grey | can L (planned) |
What is the size of the instrument?
[edit | edit source]28 x 11 x 11 cm
Version v1
[edit | edit source]20 x 11 x 11 cm
Water proofness
[edit | edit source]Splash proof
What maintenance does the instrument require?
[edit | edit source]System cleaning of the system once a year or before, if needed.
How will data be transferred?
[edit | edit source]Version v0
[edit | edit source]Serial (RS485)
Version v1
[edit | edit source]LoRaWan
Wifi, Bluetooth planned
uart planned
Costs
[edit | edit source]Material costs ~500 EUR
Technichal Details
[edit | edit source]Development status
[edit | edit source]7
Expected date for market readiness
[edit | edit source]Not clear yet
Commercial availability
[edit | edit source]Autonomous operation
[edit | edit source]Data
[edit | edit source]Data transmission
[edit | edit source]Version v1
Data is encoded to hexadecimal and sent via LoRaWan to a TTN project. Inside the TTN console, a javascript payload formatter decode the data and asigns the o2a tags, following lorawan data flow.
How to install?
[edit | edit source]A m12, 5 pole female connector can be attached to provide power.
A tube can be attached to the bottom part and secured with 6x M4 screws mounted radially. The opening allows a tube with a max OD of Ø45 mm and min ID of Ø20 mm. A bushing can be used to increase stability, in addition to the tube.
How to operate?
[edit | edit source]If a LoRaWan coverage is avaliable, the device is plug and play.
How to calibrate?
[edit | edit source]Further details
[edit | edit source]Product experts: Jochen Horstmann and Alejandro Ordóñez (HEREON)