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Commit 847c34b3 authored by Clement Remi's avatar Clement Remi
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Merge branch 'master' of https://gitlab.irstea.fr/reversaal/OhmPi

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master 144-create-testing-framework-for-tests-automation EGU23 MB.2024.ter_restored MUX_board_v2024 Refactor_mb_2023 battery_charger board_v4 code_refactor dev/dummy mqtt update_V2023 v2024_rc v2025_alpha v2024.0.35 v2024.0.34 v2024.0.33 v2024.0.32 v2024.0.31 v2024.0.30 v2024.0.29 v2024.0.28 v2024.0.27 v2024.0.26 v2024.0.25 v2024.0.24 v2024.0.23 v2024.0.22 v2024.0.21 v2024.0.20 v2024.0.19 v2024.0.18 v2024.0.17 v2024.0.16 v2024.0.15 v2024.0.14 v2024.0.13 v2024.0.12 v2024.0.11 v2024.0.10 v2024.0.9 v2024.0.8 v2024.0.7 v2024.0.0 v2023.0.1 v2023.0.0 archives/mqtt
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**STEP n°2**: Assembly of the measurement board
****************************************************
+----------------------------------------------------+
| **Required components** |
+----------------------------------------------------+
.. figure:: step_n_2/00_mes_board_components.jpg
:width: 600px
:align: center
:height: 450px
:alt: alternate text
:figclass: align-center
.. csv-table:: List of components
:file: C:\Users\remi.clement\Documents\28_ohmpi_all_git\master2\sphinx\source\step_n_2\Mesure_board_list_2_xx.csv
:widths: 30, 70, 70, 70, 70, 35, 35
:header-rows: 1
Description
==========================================
.. figure:: schema_measurement_board.jpg
:width: 600px
:align: center
:height: 450px
:alt: alternate text
:figclass: align-center
Figure shows the general schematics for the electronic measurement board developed.
We have developed a complete "plug and play" measurement board. To measure electrical resistivity with Raspberry Pi.
two ADS1115 were used,one for the voltage measurement one for the current measurement, as proposed by Florsch [7]. The ADS1115
is a 16-bit ADC (Analog-to-Digital Converter), with an adaptable gain. The advantage of ADS1115 is that the
input signal value could lie between - to + 6.114 V. For the current measurement we have directly integrated the INA282 component,
which allows to realize precise current measurement around a shunt resistor. The assembly steps are described in the following steps:
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/01_mes_board.jpg |
| 1 +------------------------------------------------------------+
| | Installation of female header, 1 by10 pins, for ADS1115 |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/02_mes_board.jpg |
|2 +------------------------------------------------------------+
| | Soldering of 4 dual-in-line- socket (2 by 2 pins) for |
| | optical relay, AQY211EH. |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/03_mes_board.jpg |
|3 +------------------------------------------------------------+
| | Soldering of 1 dual-in-line- socket (2 by 9 pins) |
| | for INA282. |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/04_mes_board.jpg |
| 4 +------------------------------------------------------------+
| | Soldering of 1 dual-in-line- socket (2 by 4 pins) |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/05_mes_board.jpg |
|5 +------------------------------------------------------------+
| | Soldering of 2 dual-in-line- socket (2 by 4 pins) |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/06_mes_board.jpg |
| 6 +------------------------------------------------------------+
| | Traco Power Supply 12V to 5V, TDH15 - 1211N |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/07_mes_board.jpg |
|7 +------------------------------------------------------------+
| | Four screw terminals for 12V inpout et 5V outpout |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/08_mes_board.jpg |
|8 +------------------------------------------------------------+
| | Traco power Supply 12V to 24V, TRN-1215 |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_2/09_mes_board.jpg |
|9 +------------------------------------------------------------+
| | Two screw terminals electrodes M and N |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/10_mes_board.jpg |
|10 +------------------------------------------------------------+
| | Four screw terminals, for 12V power supply and for |
| | electrodes A and B |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/11_mes_board.jpg |
|11 +------------------------------------------------------------+
| | Soldering three capacitors (100nF) |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/12_mes_board.jpg |
| 12 +------------------------------------------------------------+
| | 2 ohms shunt resistor pre-adjustment |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/13_mes_board.jpg |
|13 +------------------------------------------------------------+
| | Soldering 2 ohms shunt resistor |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/14_mes_board.jpg |
|14 +------------------------------------------------------------+
| | 1 Mohms resistors |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/15_mes_board.jpg |
|15 +------------------------------------------------------------+
| | Soldering tow 1 Kohms resistors |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/16_mes_board.jpg |
|16 +------------------------------------------------------------+
| | Soldering tow 1.5Kohms resistors |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/17_mes_board.jpg |
|17 +------------------------------------------------------------+
| | Soldering tow 1.5Kohms resistors |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/18_mes_board.jpg |
|18 +------------------------------------------------------------+
| | Female header 2 by 20 pins for Raspberry Pi connection |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/19_mes_board.jpg |
|19 +------------------------------------------------------------+
| | View of the female header 2 by 20 pins installation |
| | for Raspberry Pi connection |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/20_mes_board.jpg |
|20 +------------------------------------------------------------+
| | Fixing MCP23008 component |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/21_mes_board.jpg |
|21 +------------------------------------------------------------+
| |Mounting optical relay, AQY211EH |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/22_mes_board.jpg |
|22 +------------------------------------------------------------+
| | Mounting LM158 operational amplificator |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/23_mes_board.jpg |
|23 +------------------------------------------------------------+
| | Mounting ADS115 board |
| | |
+---------+------------------------------------------------------------+
.. table::
:align: center
+---------+------------------------------------------------------------+
| | .. image:: step_n_2/24_mes_board.jpg |
|24 +------------------------------------------------------------+
| | Fixing the INA282 |
| | |
+---------+------------------------------------------------------------+
**STEP n°3**: Start-up of the measurement board.
****************************************************
+------------------------------------------------------------------------+
| **Required components** |
+------------------------------------------------------------------------+
.. csv-table:: List of components
:file: C:\Users\remi.clement\Documents\28_ohmpi_all_git\master2\sphinx\source\step_n_3\test_2_xx.csv
:widths: 30, 70, 70, 70, 70, 35, 35
:header-rows: 1
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_3/001.jpg |
|1 +------------------------------------------------------------+
| | Shutdown the raspberry Pi and unplug the power supply |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+--------------------------------------------------------------------------+
| | .. image:: step_n_3/001.jpg |
|2 +--------------------------------------------------------------------------+
| | Mounting the bottom spacers on the Raspberry Pi (male/female, 11mm, M3) |
| | |
+--------+--------------------------------------------------------------------------+
.. table::
:align: center
+--------+--------------------------------------------------------------------------+
| | .. image:: step_n_3/002.jpg |
|3 +--------------------------------------------------------------------------+
| | Mounting the upper spacers on the Raspberry Pi (female/female, 11mm, M3) |
| | |
+--------+--------------------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_3/003.jpg |
|4 +------------------------------------------------------------+
| | Mounting the Ohmpi's measurement board on the Raspberry Pi |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_3/004.jpg |
|5 +------------------------------------------------------------+
| | Mounting the Ohmpi's measurement board on the Raspberry Pi |
| | |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_3/005.jpg |
|6 +------------------------------------------------------------+
| | Plug the power supply into a socket and connect it to your |
| | Raspberry Pi's power port. |
+--------+------------------------------------------------------------+
**STEP n°4**: Measurement board validation
****************************************************
Run the terminal, and write
.. code-block:: python
i2cdetect -y 1
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_4/i2cdetect.png |
|1 +------------------------------------------------------------+
| |If everything is working, three I2C addresses should appear |
| |on the screen. |
+--------+------------------------------------------------------------+
Setting up an equivalent electronic circuit, for this you will need:
* 4 1kohm resistor (R2)
* 1 220 ohm resistor (R1)
* 1 small padboard
* Spool of solder
.. table::
:align: left
+--------+------------------------------------------------------------+
| | .. image:: step_n_4/ref_circuit.png |
|2 +------------------------------------------------------------+
| | Schematic of equivalent electronic circuit test |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_4/20210905_122820.jpg |
|3 +------------------------------------------------------------+
| | Préparer le circuit équivalent |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_4/20210905_123034.jpg |
|4 +------------------------------------------------------------+
| | Préparer les cables de connexion aux batterie et les cosses|
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_4/20210905_132856.jpg |
|5 +------------------------------------------------------------+
| | Souder les câbles et les cosses |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_4/20210905_210045.jpg |
|6 +------------------------------------------------------------+
| | Installer les cables rouges sur la borne +12V et cable noir|
| | sur la borne ground. |
+--------+------------------------------------------------------------+
.. table::
:align: center
+--------+------------------------------------------------------------+
| | .. image:: step_n_4/20210905_210045.jpg |
|7 +------------------------------------------------------------+
| | Installer le circuit de référence |
| | |
+--------+------------------------------------------------------------+
Run the Thonny IDE and load the code Ohmpy4elec.pi
**STEP n°5**: Assembly of the MUX board
****************************************************
**STEP n°6**: Check Mux Board
****************************************************
**STEP n°7**: Assemble Ohmpi
****************************************************
**STEP n°8**: Boxing Ohmpi
****************************************************
**STEP n°9**: Field measurement
****************************************************
\ No newline at end of file
test_mux_board.py 0 → 100644
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− 0
View file @ 847c34b3
"""
Created on Tue Dec 7 06:39:33 2021
Code for testing switch MUX for ohmpi 2
@author: remi.clement
"""
import time , board, busio,adafruit_tca9548a
from adafruit_mcp230xx.mcp23017 import MCP23017
import digitalio
from digitalio import Direction
address=0X71# choose the mux board address
activation_time=1 # choose your activation time in second
i2c = busio.I2C(board.SCL, board.SDA) #activation du protocle I2C
def switch_mux_on(electrode,address):
tca= adafruit_tca9548a.TCA9548A(i2c, address)
if electrode < 17:
nb_i2C=7
a=electrode
elif electrode > 16 and electrode< 33:
nb_i2C=6
a=electrode-16
elif electrode > 32 and electrode < 49:
nb_i2C=5
a=electrode-32
elif electrode > 48 and electrode < 65:
nb_i2C=4
a=electrode-48
mcp2 = MCP23017(tca[nb_i2C])
mcp2.get_pin(a-1).direction=Direction.OUTPUT
mcp2.get_pin(a-1).value=True
def switch_mux_off(electrode,address):
tca= adafruit_tca9548a.TCA9548A(i2c, address)
if electrode < 17:
nb_i2C=7
a=electrode
elif electrode > 16 and electrode < 33:
nb_i2C=6
a=electrode-16
elif electrode > 32 and electrode < 49:
nb_i2C=5
a=electrode-32
elif electrode > 48 and electrode < 65:
nb_i2C=4
a=electrode-48
mcp2 = MCP23017(tca[nb_i2C])
mcp2.get_pin(a-1).direction=digitalio.Direction.OUTPUT
mcp2.get_pin(a-1).value=False
a=input(' if vous want try 1 channel choose 1, if you want try all channel choose 2!')
if a=='1':
b=0
print ("run channel by channel test")
electrode=int(input(' Choose your electrode number (integer):'))
switch_mux_on(electrode,address)
print('electrode:',electrode,' activate' )
time.sleep(activation_time)
switch_mux_off(electrode,address)
print('electrode:',electrode,' deactivate' )
if a== '2':
for electrode in range(1, 65):
switch_mux_on(electrode,address)
print('electrode:',electrode,' activate' )
time.sleep(activation_time)
switch_mux_off(electrode,address)
print('electrode:',electrode,' deactivate' )
if a not in ['1', '2']:
print ("Wrong choice !")
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