Comparing to axle load sensors with analog output (DDS A, earlier – Difference 02), digital axle load sensor Eurosens DDS CAN have several advantages:

1. Sensor supports several (up to 3) calibration tables. it is important when single pneumatic line connects several air springs and several axles. Same displacement will corresponds to different axle loads. CAN bus interface allows to send several axle loads calculated by new intellectual Eurosens DDS CAN sensor.

2. Better resolution and loseless digital interface increases accuracy of axle load and cargo weight monitoring.

How to connect Eurosens DDS CAN sensor to popular GPS tracking devices with CAN bus interface?  Lets open Eurosens DDS configuration software:

By default – PGNs 59121, 59122, 59123 are used.  (E6F1, E6F2, E6F3 in Hex-format). Add this PGN to read in GPS tracker settings (Navtelecom Smart 2435 is used), 2 calibration table – for 2 axles per 1 sensor.

Set bytes we have to read from each PGN, according to sensor protocol:

bytes 1-2 : internal raw sensor data
bytes 3-4 : rotation angle in rads x 1000
bytes 5-6 : axle load in kg

Then add 2 sensors in Wialon based on incoming raw data:

Axle load come in kilograms, so calibration coefficients are not needed

Connection complete.

Same settings for Eurosens DDS connection to Galileosky gps tracker. Galileo configurator has built-in scanner so we can see Eurosens DPS messages:

In the Scanner window we can select desired parameters and assign them to Protocol tag. Then choose protocol tags to be sent to server.

Add sensors in Wialon software:

And then we will able to see axle loads in Wialon in kilograms: