​

Bareboat Necessities Logo

​

https://bareboat-necessities.github.io

https://github.com/bareboat-necessities/lysmarine_gen

https://github.com/bareboat-necessities/lysmarine_gen/issues

https://bareboat-necessities.wixsite.com/my-bareboat

https://github.com/bareboat-necessities/bbn-m5stack-tough

https://github.com/bareboat-necessities/bbn-nmea200-m5atom

​

PDF version:

https://bareboat-necessities.github.io/my-bareboat/bbn-boat-monitoring.pdf

​

1. What is BBN Boat Monitoring

BBN Boat Monitoring is a low-power solution to send alarms on various conditions from an unattended boat.

In the center is esp32 with Ethernet module connected wired to a boat router. Alarms are sent via WhatsApp messenger.

Modular design of software and hardware so users can pick and choose needed modules.

M5Atom Lite (or Lite-S3) is the preferred hardware platform. It provides only one Grove-type of connector. So separate devices need to be designed. One for i2c sensors, one for NMEA 0183, and another one for NMEA 2000 inputs. And one more for digital/analog IO, 1-wire, and devices requiring IRQ line (ex: lightning detector AS3935) with M5Stack ATOM Mate extension kit allowing access the pins on the bottom of the ATOM board.

2. Connectivity

  1. MDNS discovery of other services gpsd, SignalK, pypilot, Victron MQTT, etc

  2. DHCP client

  3. NTP client

  4. Web server for configuration

  5. Uptime reporting (sleeping periods to save power)

  6. Ethernet to router

  7. NMEA 0183, NMEA 2000

  8. i2c, 1-wire, UART, LoRa, Ethernet, other GPIO (analog and digital)

  9. WhatsApp message

  10. Command-line WhatsApp messenger for Linux

  11. Internet connection speed reporting

  12. Speakers / Buzzer for audible alarms?

  13. Status lights for visual alarms?

3. Hardware

esp32 on m5atom-lite or m5atom-lite-S3 from M5Stack. With M5Stack Ethernet AtomPoW (with w5500 chip).

Sensors (pick and choose):

  • Accelerometer

    M5Stack 3-Axis Digital Accelerometer Unit (ADXL345)

  • IMU

    M5Stack 6-DoF IMU Pro Mini Unit (BMI270, BMM150, BMP280)

    or

    M5Stack 6-Axis IMU Unit(MPU6886)

  • Env sensors (temperature, barometer, humidity)

    M5Stack ENV IV Unit with Temperature Humidity Air Pressure Sensor (SHT40+BMP280)

    or

    M5Stack ENV III Unit with Temperature Humidity Air Pressure Sensor (SHT30+QMP6988)

  • Gas Sensors (CO, heavy gases, hydrogen, smoke detector)

    Carbon monoxide sensor for esp32 (MQ-7 gas sensor?)

    Smoke detector sensor for esp32 (MQ-2 gas sensor?)

    Heavy gases sensor for esp32 (MQ-2/MQ-4/MQ-5/MQ-6 gas sensors?)

    Hydrogen H2 gas detector sensor for esp32 (MQ-8 gas sensor?)

  • GPS

    M5Stack Mini GPS/BDS Unit (AT6558)

  • NMEA 0183 interface

    M5Stack Isolated RS485 Unit

  • NMEA 2000 interface

    M5Stack Isolated CANBus Unit (CA-IS3050G)

  • Lightning sensor

    Sparkfun LIGHTNING DETECTOR - AS3935

  • Open Fire Flame sensor

    Grove Flame YG1006 sensor

  • Voltage sensor

    M5Stack Voltmeter Unit (ADS1115)

  • Current (amp) meter for bilge pump usage

    M5Stack Ammeter Unit (ADS1115)

  • Temperature (1w) sensors

    Dallas 1-wire temperature sensors

  • Motion detection sensors

    M5Stack PIR Motion Sensor (AS312)

  • Water salinity sensor

    Water conductivity sensor

  • Proximity sensors (hatch open/closed sensor)

    M5Stack Hall Effect Unit (A3144E Hall Sensor)

    or

    Magnetic Reed door switch sensor

    or

    M5Stack Limit Switch Unit

  • Snow / ice sensor

    Rain and Snow Sensor Transmitter Weather Induction Detection Heating Anti-icing IP65

  • Water level sensor

    Water leak detector sensor

  • Dinghy LoRa locator

    LoRa receiver for esp32 (international band?)

  • RTC clock

    M5Stack Real Time Clock (RTC) Unit (HYM8563)

  • Light Sensor

    M5Stack Dlight Unit - Ambient Light Sensor (BH1750FVI-TR)

3.1. M5Stack Grove Port Color Conventions

  • Red ports are I2C

  • Black ports are I/O

  • Blue ports are UART

3.2. M5Stack Accessories

  • M5Stack ATOM Mate DIY Expansion Kit

    M5Stack ATOM Mate - DIY Expansion Kit - for M5ATOM

  • M5Stack ATOM Tail485

    M5Stack ATOM Tail485 - RS485 Converter for ATOM

  • M5Stack 1 to 3 HUB Expansion Unit for i2c

    M5Stack 1 to 3 HUB Expansion Unit

  • RS485 to TTL Converter Unit

    M5Stack RS485 to TTL Converter Unit

  • LEDs for status lights

    M5Stack RGB LED Unit (SK6812)

  • Speaker / Buzzer

    M5Stack ATOM Echo Smart Speaker Development Kit

    or

    M5Stack Passive Buzzer Unit

  • Screw Terminal Block

    M5Stack VH3.96 - 4Pin Transfer Module Unit

  • Grove-T Connector

    M5Stack Grove-T Connector (5pcs)

  • Button

    M5Stack Mini Dual Button Unit

  • Battery

    M5Stack ATOM TailBat - Battery Accessory for ATOM

  • PoE Injector

    wt-gpoe-48v10w (or some other industrial with better wattage)

  • PoE Splitter

    M5Stack PoE Splitter

3.3. Low Power Consumption Router

LinoVision IOT R41 Mini Industrial 4G LTE Router with Low Power Consumption and GPS/RS232/RS485

https://linovision.com/products/iot-r41

4. Alarms (planned)

  1. Heavy gases in bilge

  2. High salinity of water in bilge

  3. Hydrogen gas alarm

  4. Fire alarm. Smoke detector

  5. Open flames detected

  6. Carbon monoxide alarm

  7. Hatch open

  8. High heel or pitch (from IMU)

  9. High wind alarm

  10. Lightning storm detected

  11. Forgot nav lights 'on'

  12. Motion detected (Intrusion)

  13. High humidity

  14. Possible fog conditions

  15. Snow or ice conditions

  16. Barometer keeps falling

  17. Temp alarm (ex: fridge warm)

  18. Dingy too far

  19. GPX fix lost

  20. High current at anchor (by speed through water)

  21. Low water under keel alarm

  22. Accelerometer alarm for high waves

  23. Anchor alarm (plus command line utility to activate and deactivate)

  24. Grounding alarm from accelerometer

  25. Hard impact on hull (via accelerometer)

  26. Heartbeat (ImAlive) message

  27. Low battery voltage

  28. Battery overcharging

  29. High battery temperature

  30. Shore power loss

  31. Bilge pump high utilization

  32. High water in bilge

  33. Location reporting

  34. Alarms from Victron MQTT

5. Machine Learning Ideas

5.1. Using IMU

Use IMU to detect different events

  • Boat groundings

  • An object hitting hull

  • Collision

  • Walrus climbs your boat

  • Someone boards your boat from dinghy

  • Wave height calculation

  • Line caught in the prop

5.2. Using Microphone

  • Orca approach

  • Detect whale songs, dolphins, etc

  • Detect pistol shrimp

  • Detect underwater sound of prop (approaching or moving away power vessels)

  • Marine hydrophone listening

5.3. Using Cameras

  • Plankton classification

  • LIDAR

  • Augmented reality marine applications

  • Waves recording in 3D

6. Compare to commercial solutions

Examples:

Trek Transponder Boat alarm and boat monitor systems https://www.trektransponder.com.au/

Glomex ZigBoat https://www.zigboat.com/

Maretron MBB300C vessel monitoring and control black box https://dev.maretron.com/products/mbb300c.php

Siren Marine https://sirenmarine.com/