Whether it´s road accidents caused by overloaded lorries, damage to road infrastructure caused by congestion or the increased efficiency in fuel consumption, all these are key driving elements for the new EU regulation: “Vehicle Weighing Systems (EU) 2015/719, Article 10d”. With this measure, the EU wants to ensure that police officers in the different EU states have the possibility at any time during a road check to determine the total weight to determine whether the truck is overloaded or moving within the regulations.
The axle load measurement of a truck presents sensor manufacturers with a challenge. The system, which meets the requirements of the EU directive, must be compatible with various regulations as well as meet an accuracy of 5% FS at a load of 90% of the maximum permissible total weight. The conventional methods to measure forces or weights reach their limits with this task, as these sensors in most cases require a mechanically stable coupling to the axle. Ensuring this mechanical coupling under the influence of temperature, vibration, ice and shock requires a complex sensor design and mounting concept. A conventional bonding of a strain gauge to the measuring axis is also out of the question, as this assembly step would exceed manufacturing costs.
The magnetic inductive force sensor from Magnetic Sense is ideally suited for this measuring task. The contactless magnetic inductive coupling of magnetic fields into the measuring axis eliminates the otherwise necessary mechanical coupling to the measuring point. The Magnetic Sense sensor can be attached to the axis using conventional fastening methods and calibrated in a very simple production process. The magnetic inductive sensor is robust against external mechanical influences and can cope very well with the conditions in the field of application. The long-term stablemeasuring method guarantees that the required accuracies are maintained even over a very long period of time. The modular product concept also permits a concept that can be retrofitted to existing trucks. The technology and the existing modular construction kit of the force sensor can be developed into a customer-specific product in cooperation with a customer. We have aroused your interest and you want to start a development project together with us? Then please feel free to contact us.