The Influx ReXgen Air supports up to 4 CAN/CAN FD buses. It has GNSS and IMU and is specially designed to become a part of your fleet during production. It works on LTE CAT1, making it a cost-effective solution. The ReXgen Air is a data logger with onboard processing and telematics capabilities that connects machines to the cloud for data transfer using AWS (S3) or *FTPS technology. The ReXgen Air provides an open platform and can be supported by any 3rd party tools to be integrated into any data system, allowing you to build your system to maintain your data. API includes functions to manage the logger over USB and retrieve and convert the data. ReXgen Air enables smart data collection and can be reconfigured and configured remotely.

*FTPS- PROT P (Data channel encryption not supported.

ABOUT THIS MANUAL

This document is intended for professional engineers and academic researchers, allowing them to understand the concept of operating the device and integrating this knowledge into systems with components of other manufacturers.

DISCLAIMER

Translation of the original Product Manual ReXgen Air.

COPYRIGHT & LICENSE AGREEMENT

The content of this document, including all brands and trademarks and possibly protected by third-party rights, is subject without limitation to the terms of the valid trademark law and intellectual property rights of their respective registered owner.

© 2022 INFLUX TECHNOLOGY. All rights reserved.

CONTACT ADDRESS

Influx Technology Ltd

Millbrook Proving Ground, Station Lane

Bedford, MK45 2JQ, United Kingdom

Telephone: +44 (0) 1525 842504,

Sales: sales@influxtechnology.com

www.influxtechnology.com

SAFETY INSTRUCTIONS

• Ensure the device is installed, connected, and commissioned by a qualified professional following all safety norms.

• Disconnect the device completely before handling it, and disconnect any independently supplied output load circuits.

• Do not connect the housing to the Ground externally. This will suspend the reverse voltage protection of the power supply. Applying a reverse voltage, in this case, will destroy the supply circuits.

• Provide all the device connectors with plugs and any protection caps required to ensure protection class IP65.

• Never immerse the device in water or other liquids.

• The manufacturer must only repair the device.

• Keep substances that contain solvents away from the type label.

• Do not use the logger's USB port for data logging purposes, as it may damage the USB port, which won't be covered under warranty.

The following formatting and symbols will help you recognise the purpose of each paragraph:

INSTALLATION

The contents below specify the conditions to be ensured for the operation of ReXgen Air.

SIM CARD INSERTION

When inserting the SIM card in a ReXgen Air device, open the lid on the SIM slot correctly and carefully. Mishandling the SIM slot lid can damage the device and the SIM card inside.

Also, ensure the SIM is inserted, as shown in the images above (Chip facing down).

GROUNDING

Since it is not required to provide a common ground between nodes, it is possible to have ground offsets. Each node may observe different single-ended bus voltages (common mode bus voltages) while maintaining the same differential voltage. Operating a CAN system with large ground offsets can increase electromagnetic emissions. If the system is sensitive to emissions, steps must be taken to eliminate ground offsets.

TERMINATION

ISO-11898 requires that the CAN bus have a nominal characteristic line impedance of 120Ω. Therefore, the typical terminating resistor value for each bus end is 120Ω. Bus termination is used to minimise signal reflection on the bus.

SUPPLY VOLTAGE

It is always recommended to keep the nominal voltage within the specified rate. The device also has internal protection against low energy voltage events due to supply wire noise.

ISOLATION

MOUNTING

Always mount the device in a way that minimises vibration exposure and accounts for the IP rating of damage. Air is supplied with four screws to assist you with mounting.

ANTENNA

An external active FAKRA C or FAKRA D antenna with a supply voltage of 3V is required for GNSS and LTE data logging. It is to be ensured that the antenna is connected correctly (at all times) and that it is not loose when the ReXgen Air is powered on. Operation with a loose antenna or without the antenna entirely can lead to GNSS/LTE data loss.

PACKAGE INCLUDES

Packaging will contain the following components:

ReXgen Air (INF 2116.2X/ INF 2116.4X)

Molex Mini50 Dual Row 24 Pin connector.

Micro USB Cable

Mounting Screws

SOFTWARE

ReXgen Air device will be supplied with a freely distributed configuration and data retrieval software, ReXdesk.

The Software can be downloaded from our website, www.influxtechnology.com.

Please visit the support section on our website www.influxtechnology.com.

Download API examples and XML schema from https://docs.influxtechnology.com

The latest versions of the drivers, Software, and firmware are available .

Influx Technology assumes no liability for damages caused by normal wear, installation errors, or operating or maintenance faults. This is also applicable when the user modifies the devices, any accessories, or the Software without the prior approval of Influx Technology.

PRODUCT DRAWINGS

DEVICE ELEMENTS

*CEP - circular error probable

*FTPS- PROT P (Data channel encryption not supported.

* Region and category of modem should be specified while ordering.

* Works with AT&T and T-Mobile in the USA.

Electrical Data

Along with the free, user-friendly configuration software, the standalone ReXgen logger comes with the following advantages:

Key features

• Up to 4 CAN/CAN FD buses.

• x2 Analog Inputs.

• x1 LIN bus*.

• x2 Digital inputs.

• Integrated 18Hz GNSS (u-Blox).

• Integrated IMU (6 axes).

• LTE CAT -1 connectivity.

• Secure Data transfer using *FTPS and Amazon S3.

• Supports eMMC storage (up to 32GB).

• Encrypts data logs using Advanced Encryption Standard (AES).

• Enables Locking of the device using RSA data security.

• Open Libraries for logger management and data conversion.

• XML-based configuration, Schema provided.

• Live CAN/CAN FD trace Monitoring.

• Supported Data formats ASAM MDF4, MATLAB (.mat), CSV, ASC, BLF, TRC*.

• Various sleep modes with low power consumption.

• x4 configurable LEDs.

• CAN/J1939 filters.

• Micro USB 2.0 for data transfer and configuration.

• Automotive-grade Molex Mini50 connection system.

• Easily stackable and installable.

• Free powerful graphic interface application tool ReXdesk provided.

Available Models

Technical Specifications

Click here to enquire about ReXgen Air.

ReXgen Air uses:

• FAKRA C connector (Blue) for the GNSS

• FAKRA D connector (Bordeaux) for the LTE antenna.

The ReXgen Air has an automotive-style 24-pin Molex Connector. (This enables the device to be easily and robustly installed in production machines). Molex 24 PIN to D Sub 25 connector can be purchased separately.

*ReXgen Air requires an external antenna to be purchased in addition to the extension cable. The unit's price does not include the external antenna, which can be purchased off the shelf.

Molex Connector- Part Details

PIN DETAILS

24-pin Molex Mini50 Connector

Male 25-pin Standard D Type connector (Mini 50 to D Sub 25 cable Sold separately).

Click to purchase.

CONNECTING THE DEVICE

POWER

A Molex connector provides the product's power supply. If the customer uses the multi-connect cables, DSub 9 or DSub 25 will be used, which applies to all the other connections.

CAN/CAN FD

ReXgen Air can be interfaced to the CAN/CAN FD bus, from which data will be logged using D-Sub 9 connector A or connector B. The CAN-high and CAN-low from the vehicle or machine terminals must match the CAN-high and CAN-low terminal of the ReXgen Air. ReXgen Air should be configured with the same baud rate as the device to which it is interfaced.

ANALOG AND DIGITAL INPUT

ReXgen Air supports 2x analogue inputs in the range of +/- 10 V. The two analogue inputs are interfaced to the ReXgen Air via a D-Sub 9 connector B. ReXgen Air also supports two digital inputs. The digital inputs are interfaced to the ReXgen Air via a D-Sub 9 connector A.

USB

You can connect the device to a PC via the communication gateway USB for configuration and test purposes. The device is supplied with a standard Micro USB cable. Please note that the USB is not isolated; an isolator can be purchased separately.

*x1 micro USB cable to be supplied with any quantity of ReXgen Air purchased.

Consists of

Sampling Rate

This allows users to define the desired sampling rate in Hz, the maximum being 30Hz.

Platform:

This lists the various dynamics models/environments supported for a well-defined configuration:

• Portable

• Stationary (Static- no movement)

• Pedestrian

• Automotive

• Sea

• Airbourne up to 1g/2g/4g

• Wrist

• Motorbike

• Robotic Lawn Mower

• Electric Kick Scooter

GNSS Type

The GNSS module used in Influx Technology's ReXgen Air device supports receiving and tracking from various Global Navigation Satellite Systems. ReXgen Air device Supports the following GNSS(s)'

• Default

• GPS (United States)

• Galileo (European Union)

• GLONASS (Russia)

• BeiDou (China)

• GPS + Galileo

• GPS + Galileo + GLONASS

• GPS + Galileo + BeiDou

• GPS + BeiDou

• Galileo + GLONASS

• Galileo + BeiDou

• GLONASS + BeiDou

Configure using ReXdesk Software from Influx

The device can effectively log data on field tests and the bench via LIN interfaces. The device can work in Slave or Master mode. All logged data is saved to the eMMC.

How to configure the ReXgen data logger to data (video tutorial).

The device can effectively log data on field tests and a bench via CANinterfaces. The device supports all standard CAN baud rates. ReXdesk software allows users to configure ReXgen Air with custom baud rates and modify advanced bit timings. ReXdesk also enables users to configure ReXgen Air with CAN & J1939 filters. All logged data is saved to the secure embedded memory. The user can configure triggers based on CAN IDs, parameter values & J1939 DM1 messages to start or stop logging.

For a step-by-step guide, click here.

This data can be further transferred to the cloud using FTPS*.

*FTPS- PROT P (Data channel encryption not supported).

How to configure the ReXgen data logger to data (video tutorial).

The device consists of an internal GNSS module and an external active antenna with a supply voltage of 3V. This receiver can evaluate signals from the GNSS/QZSS, GLONASS, BeiDou and Galileo satellites. GNNS data can be logged at sampling rates up to 30HZ.

GNSS Orientation

The GNSS orientation requirements for installing ReXgen Air devices majorly focus on explaining orientations for:

GNSS Positioning

Dead Reckoning

Geofencing

For a step-by-step guide, click here.

How tousing ReXdesk.

Align the IMU of the device to obtain the correct measurements, as shown below:

Place the device into the vehicle so that the IMU chip inside is aligned with the axis,

In case of misalignment, align the 'Z' axis first, followed by 'Y' and then 'X'. The chart below explains the attributes of all three axes in detail:

To Calculate the exact angle in case of misalignment:

• Keep the axis's actual position in mind- measure the angle of misalignment.

• Subtract the current measured angle from the actual angle value.

For example, if the vehicle's attitude is misaligned at its roll, the axes Z and Y are misaligned.

Configure/edit in Xml

Similarly, if the vehicle's attitude is misaligned at its yaw, the axes X and Y are misaligned.

Configure/edit in Xml

Similarly, if the vehicle's attitude is misaligned at its pitch, the axes Z and X are misaligned.

Configure/edit in Xml

For instance, the input function can log status information from devices, machines, and sensors to directly determine and monitor switch and key states. You can record the data determined from the input functions, which can be used to create triggers for starting and stopping logging.

For a step-by-step guide, here.

How to using ReXdesk.

Influx devices combine the Global Navigation Satellite System (GNSS) and dead reckoning for optimal navigation and location accuracy. While GNSS provides precise positioning under ideal conditions, its signal can be weakened or lost in certain environments, such as tunnels, urban canyons, or dense forests, and this is where dead reckoning steps in.

Using an accurately aligned IMU configuration, these devices help detect and plot navigation routes and patterns in areas with minimum GNSS coverage, such as tunnels, underground parking, subways, or other such areas.

Dead reckoning continuously estimates your position based on your device's movement data, such as speed and direction. When GNSS signals are unavailable, dead reckoning takes over, ensuring uninterrupted navigation until the GNSS connection is restored.

The device consists of an internal accelerometer and gyroscope module. The acceleration output data rate is up to 6664 Hz with a vibration rate of ±2/±4/±8/±16 g at full scale. The angular output data rate of the gyroscope is up to 1666 Hz with ±125/±250/±500/±1000/±2000 dps at full scale.

For a step-by-step guide on how to log Accelerometer data, here.

For a step-by-step guide on how to log Gyroscope data, here.

How tousing ReXdesk.

Using the Geofencing option, one can define up to one circular geofencing area, creating a circular area or fence around the location of interest.

• Radius: specify the radius to adjust the location's proximity in meters.

• Latitude: specify the latitudinal location.

• Longitude: specify the longitudinal location.

The module draws a circle using the values specified for the Longitude, Latitude and radius.

Configure using ReXdesk Software from Influx

Or

Edit in Xml Code block

Digital Input Functions

The Wake-Up Pin

CAN Overview

To install the ReXgen driver, run the .exe file in this location:

C:\Program Files (x86) \Influx Technology\ReXdesk\Drivers.

Or

• To install the ReXgen1 driver, locate the ReXgen1 Drivers installer from the start menu.

• Run the ReXgenInstaller.exe file.

Run the ReXgenInstaller.exe file.

• To continue installing the ReXgen Air device driver on your system, click 'Next'.

• To cancel the installation at this stage, click 'Cancel'. (No software will have been installed on the system at this point.)

• Please read the licence agreement carefully.

• Once you understand and accept the licence agreement, please click 'I accept this EULA' to continue installing the driver. If you do not accept the terms, please click 'Cancel' to stop the installation at this point.

• Click 'Next' to continue the installation process.

Once the installation is complete, this window will appear.

• Click 'Finish' to close the window. The ReXgen Air driver has been successfully installed on your system.

The Loggers Wake up pin is held high and the logger can be woken up by switching the pin to the ground in one of the three ways shown below, if the pin is switched to ground for longer than 20ms it will wake from sleep mode

The Digital Input Output pins will consider voltages below 0.8V as 'low' and above 2.5V as 'high'. Examples of how you could utilise the I/O pins if configured as inputs are shown below:

Make sure you have installed the Microsoft Visual C++ Redistributable.

You can download it from the following link: https://www.microsoft.com/en-us/download/details.aspx?id=48145

To begin the installation of the ReXdesk Software, open the installer by running the set-up file.

• To continue with the installation of ReXdesk on your system, click 'Next'.

• To cancel the installation at this stage, click 'Cancel'. (No software will have been installed on the system at this point.)

• Select the folder in which you wish to install the Software; it is preferred to use the default location.

• Select the preference for computer user installation to determine which computer users will access the ReXdesk Software.

• Click 'Next' to continue with the installation

• To continue with the installation of ReXdesk on your system, click 'Next'.

• Once the installation is complete, this window will appear.

• Click 'Close' to close the window. ReXdesk is now successfully installed on your system.

Firmware can be updated using the Reflash option in the ReXdesk Software.

The latest firmware can also be located here:

C:\Program Files (x86)\Influx Technology\ReXdesk\Firmware\RexFirmware.zip

The Controller Area Network (CAN, also known as CAN Bus) is a vehicle bus standard designed to allow electronic control units and devices to communicate in applications without a host computer. As an alternative to conventional multi-wire looms, the CAN Bus allows various electronic components (such as electronic control units, micro-controllers, devices, sensors, actuators and other electronic components throughout the vehicle) to communicate on a single or dual-wire network data bus up to 1 Mbit/s.

CAN BUS COMPONENTS

CAN Controller receives the transfer data from the microcomputer integrated into the control unit/device (also known as CAN Node). The CAN controller processes this data and relays it to the CAN transceiver. Also, the CAN controller receives data from the CAN transceiver, processes it and relays it to the microcomputer integrated into the control unit/device (CAN Node).

CAN Transceiver is a transmitter and receiver in one. It converts the CAN controller's data into electrical signals and sends it over the bus lines. Also, it receives data and converts this data for the CAN controller.

CAN Data Bus Termination is a resistor (R) typically 120 ohms. It prevents data sent from being reflected at the ends and returning as an echo and ensures that the bus gets the correct DC levels.

MAXIMUM BUS SPEED & CABLE LENGTH

The CAN bus uses inexpensive twisted-pair wires to send data. All the nodes are connected to the same line (bus) with small branch lines. The signals on the two CAN lines have the same data sequence, but their amplitudes are opposite. So, if a pulse on the CAN-H line goes from 2.5V to 3.75V, the corresponding pulse on the CAN-L line goes from 2.5V to 1.25V (opposite to CAN-H).

According to the standard, the maximum speed of a CAN bus is 1 Mbit/second. At a speed of 1 Mbit/s, a maximum cable length of about 40 meters (130 ft.) can be used. This is because the arbitration scheme requires that the wavefront of the signal can propagate to the most remote node and back again before the bit is sampled.

• Maximum achievable speed: - 1Mbps.

• Maximum length achievable: - 500 metres at a lower speed of 125 Kbps.

• The bus should be terminated at both ends with 120-ohm resistance.

• Removal of one node will not affect the communication in the bus.