Infineon XENSIV PAS CO2 Sensor2Go Evaluation Kit User Guide
- June 6, 2024
- infineon
Table of Contents
Infineon XENSIV PAS CO2 Sensor2Go Evaluation Kit
About this document
This document will help users to work with the XENSIV™ PAS CO2 Sensor2Go
evaluation kit. The XENSIV™ PAS CO2 Sensor2Go evaluation kit is developed as a
plug-and-play module for the assessment of the XENSIV™ PAS CO2 sensor.
Scope and purpose
This document will define XENSIV™ PAS CO2 Sensor2Go evaluation kit functions,
the procedure for integrating with the XENSIV™ PAS CO2 mini-evaluation board,
and the necessary steps required to get a readout from the kit.
Intended audience
Application engineers, system engineers, and system architects of an
application where the XENSIV™ PAS CO2 mini-evaluation board will be
integrated.
Sales part codes
SP005582413 – XENSIV™ PAS CO2 Sensor2Go evaluation kit
SP005577475 – XENSIV™ PAS CO2 mini-evaluation board
Introduction to XENSIV™ PAS CO2 Sensor2Go evaluation kit
The XENSIV™ PAS CO2 is a real CO2 sensor that improves the size and performance of existing CO2 sensor solutions. This sensor has been designed based on the unique photoacoustic spectroscopy (PAS) principle. To ensure efficient and quick evaluation, the XENSIVTM PAS CO2 Sensor2Go Evaluation kit is offered. An easy-to-use PC GUI is offered along with the package. The contents of the kits are shown in Figure 1.
The complete Sensor2Go evaluation kit includes:
- XENSIV™ PAS CO2 evaluation motherboard
- XENSIV™ PAS CO2 mini-evaluation board
- micro-USB cable
Key features:
- Communication to a PC GUI via micro USB
- Power management unit ensuring stable 12V for the light source
Hardware details
Connection of the mini-evaluation board with the motherboard
Connect the mini-evaluation board and motherboard as shown in Figure 2. For
proper connection please connect pin 1 of the mini-board as shown in the
figure.
The relevant pin description of the XENSIV™ PAS CO2 mini evaluation
board is presented in the following table.
Pin (mini- board
connection)
| Pin (external
pin header)
| Symbol| Type| Description
---|---|---|---|---
1| 3| VDD3.3| Power supply (3.3 V)| 3.3 V digital power supply
2| 4| RX| Input/Output| UART receiver pin
3| 6| SCL| Input/Output| I2C clock pin (3.3 V domain)
4| 5| TX/SDA| Output| UART transmitter pin (3.3 V domain)/I2C data pin (3.3 V
domain)
5| 9| PWM_DIS| Input| PWM disable input pin (3.3 V domain)
5b| 11| SWD| N/A| Do not connect
6b| 12| SWCLK| N/A| Do not connect
6| 1| GND| Ground| Ground
7| 8| INT| Output| Interrupt output pin (3.3 V domain)
8| 7| PSEL| Input| Communication interface select input pin (3.3 V domain)
9| 10| PWM| Output| PWM output pin (3.3 V domain)
10| 2| VDD12| Power supply (12 V)| 12 V power supply for the IR emitter
XENSIV™ PAS CO2 mini-evaluation board
The XENSIV™ PAS CO2 sensor is assembled on the mini-evaluation board as shown
in Figure 3. The mini-evaluation board has extended male pin headers and can
be treated as a standalone sample. Its internal registers can be accessed via
external pins using communication protocols such as I2C, UART, or PWM.
The relevant pin descriptions of the XENSIV™ PAS CO2 mini-evaluation
board are presented in the following table.
| Pin | Symbol | Type | Description |
|---|---|---|---|
| 1 | VDD3.3 | Power supply (3.3 V) | 3.3 V digital power supply |
| 2 | RX | Input/Output | UART receiver pin |
| 3 | SCL | Input/Output | I2C clock pin (3.3 V domain) |
| 4 | TX/SDA | Output | UART transmitter pin (3.3 V domain)/I2C data pin (3.3 V |
domain)
5| PWM_DIS| Input| PWM disable input pin (3.3 V domain)
5b| SWD| N/A| Do not connect
6b| SWCLK| N/A| Do not connect
6| GND| Ground| Ground
7| INT| Output| Interrupt output pin (3.3 V domain)
8| PSEL| Input| Communication interface select input pin (3.3 V domain)
9| PWM| Output| PWM output pin (3.3 V domain)
10| VDD12| Power supply (12 V)| 12 V power supply for the IR emitter
NOTE: Before performing the evaluation, it is recommended to perform Forced Compensation (FC) or enable Automatic Baseline Offset Correction (ABOC).
Software
XENSIV™ PAS CO2 Sensor2Go kit can be evaluated on the XENSIV™ PAS CO2 Sensor2Go GUI. It is a plug-and-play solution. Just install the tool in your PC, connect the evaluation kit with your PC and start evaluating the CO2 sensor.
Step 1: Downloading the GUI
Before installing the XENSIV™ PAS CO2 Sensor2Go GUI, please uninstall any
previous version of the same GUI. Then download the latest version of the GUI
from the following link. (Sometimes customers may experience issues
downloading the installer using Microsoft Edge. We recommend using the latest
version of Google Chrome). The XENSIV™ PAS CO2 Sensor2Go GUI can be downloaded
from the Infineon toolbox. The tool is shown in Figure 4. Please, download the
toolbox from the following link:
Link to GUI:
https://www.infineon.com/cms/en/tools/landing/infineontoolbox.html
Then search for ‘XENSIV PAS CO2 Sensor2Go GUI’ within the toolbox launcher and
install.
Step 2: Installing the GUI
After downloading, simply run the downloaded file with the ‘.exe’ extension from your download folder and go through the installation procedure. The ‘.exe’ file name should start from ifxpasco2gui_followed by version no. of software you downloaded.
After performing all the necessary steps, Press ‚Finish‘ to exit setup and launch XENSIVTM PAS CO2 Sensor2Go GUI. The startup screen will look like Figure 5.
Step 3: Connect XENSIVTM PAS CO2 Sensor2Go
Connect a XENSIVTM PAS CO2 Sensor2Go evaluation kit using a micro USB cable as
shown in Figure 6.
After connecting the sensor and starting the value acquisition
process, the first CO2 concentration value will appear after a delay of 10 s.
Using a single motherboard in combination with multiple mini-boards, it is
advised to put a sticker and give each sensor a separate serial number. This
way, it will be easy to evaluate and process the data at a later time.
Data Logging:
If the automatic logging column is not checked, each time when a user connects
the sensor, GUI will prompt the user asking for a path of .CSV logging file.
If the popup is discarded, no default path is provided and automatic logging
is disabled. The logging settings can be changed by clicking the ‘logging
settings’ menu at the top right
corner of the GUI. Again, for the log files, it is advised to use the same
serial number as it has been used by the user for the sensor.
Note: Multiple sensor connection to GUI is not supported with this GUI
version.
Additional features
In the installed GUI customers can use the different functionalities of the
XENSIVTM PAS CO2 sensor.
ABOC and Pressure compensation:
Automatic Baseline Offset Correction (ABOC) and Pressure compensation can be
triggered by manually setting the values in the ‘CO2 setting’ menu. This menu
button can be found at the top left corner as shown in Figure 7.
After changing the related settings press enter and click the “Apply all
settings” button from the bottom left corner of the screen as shown in Figure
8.
Forced compensation:
Force compensation can be triggered by manually setting the values in the
‘Force calibration’ menu. This menu button can be found at the top left corner
as shown in Figure 9.
Note: Before enabling the Force compensation, the reference CO2 concentration needs to be determined.
Appendix
Schematics for evaluation motherboard
Customers who are using the XENSIV™ PAS CO2 mini-evaluation board or
standalone XENSIV™ PAS CO2 sensor without the XENSIV™ PAS CO2 evaluation
motherboard are encouraged to use the same application circuits for a single
and stable power supply.
PAS sensor
Infineon fixed linear voltage post regulator
Example voltage boost converter to generate stable 12V
Revision history
| Document version | Date of release | Description of changes |
|---|---|---|
| V1.0 | 02.06.2021 | Creation |
| V1.1 | 26.08.2021 | Updated notes |
Trademarks
All referenced product or service names and trademarks are the property of
their respective owners.
Edition 2021-08-26
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2021 Infineon Technologies AG. All Rights Reserved.
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