In Practice

Fleet testing & in-vehicle testing

With fleet testing and in-vehicle testing, the vehicles are always at different locations. Measurement data are recorded via the CAN-bus with the data logger imc BUSDAQ. If the vehicle is switched off, the imc BUSDAQ unit goes into sleep mode.

Starting of the measurement is triggered by opening the door, for example (Wake up on CAN). Within 200 ms, this CAN message starts a pre-configured measurement. At the same time, the imc BUSDAQ automatically dials, via the GPRS network, into the switching center.

It is then possible to access any measurement device in the fleet from a PC. Any threshold violations are automatically reported and complte series of measurements can be quickly transferred to the home PC. Last but not least, remote parameterization of measurement devices is possible without any difficulty.

Combining imc BUSDAQ and imc CANSAS

On large machinery, such as wind turbines, distributed measurement systems have a distinct advantage. They allow measurements to be made in close proximity to the sensor, thus, reducing the amount of wiring and minimizing interference. This saves time and increases the quality of the measurement results.

Additional advantages are made clear when the imc BUSDAQ and imc CANSAS are used in combination. The imc CANSAS module is able to convert analog sensor information into CAN signals, and output digitized data to the imc BUSDAQ device. Absolute time synchronization between the channels of all connected imc CANSAS devices is secured. This type of device configuration can be distributed over the entire system. An arrangement as such has no significant disadvantages over a centralized monitoring system—only advantages.