ML-x17 DATA LOGGER MANUAL
Manufacturers of low power instruments
page 65
4.20.4 Swarm Satellite
The Swarm satellite modem is suitable for data transfer over the Swarm low earth orbiting satellite
constellation. The Swarm constellation has real global coverage enabling to monitor environmental
phenomena and precious resources all over the planet affordably.
An ML-x17 can record up to 64 different parameters/channels (to SD-Card) of which a maximum of 15
can be marked-up for satellite transfer in compacted format. Up to 750 satellite data packets can be
transferred per month, so about 1 per hour. Data compaction is used to squeeze as much as possible
data into a single 192 byte packet (typically 6 time series of about 10 channels).
Transferred data will be securely stored in a cloud storage called the Hive and can also directly be
passed to the
IoT-platform. When activating your own
you can choose to pull the data from the Hive by implementing the Swarm API in your own platform and
decode the compacted messages or run our SwarmDataCollector Java jar (see:
https://ydoc.biz/download/YDOC-SwarmCollector manual.pdf
We have implemented two flavours of satellite
messages: “Text” and “Compacted”.
The body of a “Text” message contains one timestamped log record at max, the body is formatted as
follows:
*<logger s/n>;<yyddmmhhmmss;<par code1>;<par value1>;…;<par codex>;<par valuex>
Example: *5304783;160513140000;TEMP;23.6;LEVEL;3.32;BATT;4.2
See chapter: “Compacted Data Format” for a description of the “Compacted” message format.
4.20.4.1
Send interval
The send interval on which a new data message is enqueued to the Swarm modem, which will take care
of the transfer to the Swarm constellation when a swarm of mini satellites passes by. You can check the
bypass schedule for your location with the Swarm.space pass-checker. The Swarm modem will stay
Swarm satellite settings
[0] Exit
[1] Name >> Swarm satellite
[-] Port settings >> RS232 8N1; 115200 Baud
[3] Accessory power >> Enabled; Warm up 00:00:30
[4] Send interval >> 01:00:00
[5] Send delay >> Not used
[6] Data transpond >> Actual values
[7] Message format >> Text
[8] Backup mode >> Not used
[-] Backup after >> N/A
[A] Swarm time update >> On
[B] RSSI >> Not used
[C] Latitude >> Not used
[D] Longitude >> Not used
[E] Altitude >> Not used
[F] Direction >> Not used
[G] Speed >> Not used
[H] Operating time >> Not used
[R] Remove
[S] RSSI test
[T] Swarm test
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