OpenSeaMap-dev:HW-logger/specification
Version vom 10. April 2013, 17:30 Uhr von Markus (Diskussion | Beiträge)
For logging the water depth, users need a black box for doing this...
There are several systems of navigation instruments on board:
- 1. NMEA-0183 with single GPS and single sounder
- 2. NMEA-0183 export from a chart plotter, with connected GPS and sounder
- 3. NMEA-2000 with connected GPS and sounder
- 4. Chart plotters writing to an SD-card, (W)LAN or USB, with connected GPS and sounder
We need two HW-Loggers:
- NMEA-0183
- NMEA-2000
Skipper with PC and NMEA-0183 can use our SW-Logger (plus RS-232>USB converter).
Inhaltsverzeichnis
NMEA-0183 HW-Logger
| Nr | what for | Connector | Remarks | |
|---|---|---|---|---|
| 2 | NMEA-0183 | input | Lüsterklemme | 2-channel, opto coupler |
| 1 | SD-card | output | slot | |
| 1 | 12 V | power | Lüsterklemme | 5..30 V? <100 mA |
| 1 | Accelerometer | internal | Roll and pitch | |
| 1 | Pulse generator | internal | Time stamping the sounder- and accelerometer data | |
| 1 | Battery | internal | Buffering power interruption. Goldcap? | |
| 2 | LED | operation indicator | Power, data on channel A, data on channel B |
- Processing
- Listening to the two ports and the accelerometer
- Time stamping the sounder- and accelerometer data by GPS-time plus pulse generator
- Merging the data
- Writing the merged data continuously into a file to the SD-chard
- Starting new files
- Handling of powerdown (closing the file)
- Body
- Standard (no IPx)
- Mountable by 2 screws on wood
- 3x2 Lüsterklemme, 1x SD-Card-slot
- 3 LED
NMEA-2000 HW-Logger
| Nr | what for | Connector | Remarks | |
|---|---|---|---|---|
| 1 | NMEA-2000 | input | MicroC | opto coupler |
| 1 | SD-card | output | slot | |
| 1 | 12 V | power | Lüsterklemme | 5..30 V? <100 mA |
| 1 | Accelerometer | internal | Roll and pitch | |
| 1 | Pulse generator | internal | Time stamping the sounder- and accelerometer data | |
| 1 | Battery | internal | Buffering power interruption. Goldcap? | |
| 2 | LED | operation indicator | Power, data recording |
- Processing
- Listening to the NMEA-port and the accelerometer
- Time stamping the sounder- and accelerometer data by GPS-time plus pulse generator
- Merging the data
- Writing the merged data continuously into a file to the SD-chard
- Starting new files
- Handling of powerdown (closing the file)
- Body
- Standard (no IPx)
- Mountable by 2 screws on wood
- 1x2 Lüsterklemme, 1x MicroC, 1x SD-Card-slot
- 3 LED
