Overview
DataBoy is an Open Source Hardware Datalogger designed to monitor photovoltaic water pumping systems in remote areas. For example, the Datalogger V1.0 has been monitoring an installation since January 2018 in the village of Gogma in Burkina Faso since these villages are off-grid, the Datalogger V1.0 is supplied by batteries and photovoltaic (PV) panels.
Getting started
- Prerequisite:
- KiCAD
- Git
- KiCAD
- Get started by cloning the repo
.git clone https://gitlab-student.centralesupelec.fr/el-mehdi.karmani/databoy.git - Launch KiCAD_files/datalogger.pro with KiCAD
- Enjoy
Design explanation
Requirements
Project requirements are below:
Power supply
Powered from a 12 V, 12 Ah, lead-acid external battery YUASA Y12–12L.
Data Display
Two LEDs give information about the data collection and the connection of the USB stick.
| Yellow LED (ON/Blinking/Off) | Red LED (ON/Blinking/Off) | Information |
|---|---|---|
| OFF | OFF | No USB stick connected |
| ON | ON | A USB stick is connected and data are being collected |
| OFF | ON | A USB stick is connected but no data are being collected |
| OFF | Blinking | A USB stick is connected but data have already been collected |
Data logging
Local storage on SD card.
PCB
-
Dimension 33x25 cm
-
Only widely available component references
Note 1: Using only widely available components is important to ensure that we do not suffer from chip shortage and that people across the world can source components locally to repair the devices.
Software design
KiCAD + export as gerber file
IC description
Integrated circuits description can be found here.
Measurement Blocks
Sensor description
Sensor description can be found here.
Sensors
| Sensor | Name | Signal | Connector | Description |
|---|---|---|---|---|
| Water flow sensor1 | VFLOW1 | Square voltage (0 V low, 5 V high) |
BNC | Square signal from the water flow sensor 1 |
| Water flow sensor2 | VFLOW2 | Square voltage (0 V low, 5 V high) |
BNC | Square signal from the water flow sensor 2 |
| Current sensor | I1in | Continuous voltage | MC4 | Input current 1 |
| Voltage sensor | V1in High, V1in Low | Continuous voltage | MC4 | Input voltage 1 |
| Temperature sensor 1 | RPT1 | BNC | Variable resistance which increases with the temperature | |
| Temperature sensor 2 | RPT2 | BNC | Variable resistance which increases with the temperature | |
| Irradiance sensor | Irr1 | Continuous Voltage | BNC | Proportional voltage of the irradiance from the irradiance sensor |
Signal acquisition
Signal acquisition can be found here.
Signal conditioning
Signal conditioning can be found here
Manuals
User Manual
User manual can be found here
Calibration Manual
Calibration Manual can be found here
Licence
This work is licensed under ********. Read carefully the license file attached
Project status
Credit
| Review | Date | Authors | Validation |
|---|---|---|---|
| V1.0 | 2017 | Simon Meunier | Loïc Quéval |
| V2.0 | 2018 | Joséphine Demay Paul Lorang |
Loïc Quéval Simon Meunier |
| V3.0 | 2019 | Vincent Roy | Loïc Quéval Simon Meunier |
| V3.1 | 2021 | Sébastien Ferreira | Loïc Quéval Simon Meunier |
| V3.2 | 2022 | El Mehdi Karmani Ayoub Harchadi Lokmane Haouchine |
Loïc Quéval Simon Meunier |