Remote axle load control and cargo weight calculation are highly demanded features of the GPS tracking systems. We developed Eurosens Difference onboard weighing system which provide features:
■ Individual axle load measurement for truck and trailer.
■ Cargo load calculation.
■ Axle overload alarm.
■ Show axle load and cargo weight at the driver’s display.
■ Transmit axle load and cargo weight values to the GPS tracking system. 
Eurosens Difference system consist from several parts:
1. Sensors Air spring suspension – Eurosens DPS , Leaf spring suspension – Eurosens DDS Also you can use any sensors with analog (voltage) output : vehicle sensors, strain gauges, load cells, pressure sensors, etc.
2. Electronic unit Eurosens Difference-T (-T2, -T4)
■ Process voltage signal from one load sensor (Difference-T), from 2 sensors (Difference-T2), from 4 sensors (Difference-T4).
■ Stores the parameters (dimensions and weight) of truck or trailer (where its installed).
■ Stores the calibration data.
■ Transmits sensor signal to the digital message in RS485 interface with its address.
■ Receives information about axle loads from the Difference-T controllers.
■ Determines the weight of the cargo based on the mass-dimensions of the tractor or semitrailer truck.
■ Displaying of the axle load and weight of the cargo on the special indicator in the driver’s cab.
■ Warning of exceeding the permissible load on one of the axles.
■ Output to RS485 interface of cargo weight.
-
- Display
Eurosens Difference system supports various configurations of lifting axles, pneumatic suspension schemes and trailers.
-
- Configuration №1. All air springs are connected parallely – here is enough 2 pressure sensors .The first one is installed on the tractor (truck itself), the other one – on semitrailer.
-
- Configuration №2. 2 sensors on the tractor (truck) and 2 sensors on semitrailer
-
- Configuration №3. 2 sensors on the truck and 4 sensors on semitrailer (in this configuration, as a rule, one axle is lifting)
-
- 2 sensors on the tractor (truck) and 6 sensors on semitrailer (as a rule, there are 2 lifting axles here)
Sensor placement and address can be configured with special service software Eurosens Difference configurator.
| Eurosens Difference soft&info bundle | |
| Eurosens Difference installation manual |
What you need to know:
■ Each analog sensor is connected to a Difference-T controller (1, 2 or 4 inputs)
■ The protocol of axle load transfer from Difference-T: LLS, each sensor under its own address (0-5).
■ If it is not necessary to measure the weight of the cargo (and warning about exceeding the axle load) – Display is not necessary.
■ The protocol for transferring cargo weight from Display: LLS (addresses 8-9, tractor and trailer)
■ When changing the semitrailer , the system continues to work if the new semitrailer is also equipped with sensors and Difference-T (with calibration). No reconfigurations are required.