DATA ACQUISITION Automotive CAN FD data acquisition

Test and measurement specialist company introduces CAN FD monitoring module to enable the automotive industry to gain improved dynamic electro-mechanical system behaviour analysis.


n a move to stay ahead of electronic system development in the automotive industry and provide a means for test and development engineers to

continue to have robust monitoring capabilities, Yokogawa has extended its ScopeCorder DAQ family to include a monitoring module for CAN FD. The CAN FD monitoring module is designed for use with the ScopeCorder range of portable data acquisition (DAQ) and recording instruments from Yokogawa Europe. This plug-in module is compatible with the DL850EV (Vehicle Edition) instrument and the new DL350 ScopeCorder fitted with the VE option. Using a ScopeCorder together with bus monitor modules to decode data from automotive serial buses such as CAN (Controller Area Network) enables engineers to display information such as engine temperature, vehicle speed and brake pedal position as trend waveforms and compare this with the analogue data coming from the actual sensors. This enables automotive engineers to gain a thorough insight into the dynamic behaviour of the complete electromechanical system.

MONITORING CAN FD First announced in 2012, CAN FD (CAN With flexible data rate) is an extension format for CAN in which the transfer rate and data length of the data field have been increased while still following a protocol common to CAN. It enables data rates

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❱ ❱ ScopeCorder module provides the capability for CAN FD monitoring enabling automotive engineers to test prototypes of the latest generation of highly connected vehicles

higher than 1 Mbit/s to be transmitted on a CAN bus and is thus able to deliver the higher bandwidths now required by the automotive industry for in-vehicle networks. Yokogawa already supports CAN FD triggering and decoding in its range of DLM mixed signal oscilloscopes for physical layer bus development. Some automotive manufacturers are planning to implement CAN FD as early as model year 2018 with a wider adoption expected in 2020. This means that engineers are now free to consider CAN FD for meeting the needs for higher data rates in automotive buses especially with regard to electric/hybrid vehicles where new powertrain concepts demand a much higher bit-rate and utilisation. According to Terry Marrinan,

Vice-President Yokogawa’s Test & Measurement Business Unit, the implementation and commissioning of CAN FD systems into actual vehicles requires either multiple instruments or a single versatile multi-channel instrument like the ScopeCorder to monitor the signals on the bus and display these together with those from

the sensors along with data from the engine control unit (ECU). “This is necessary in order to analyse the complete system and check that it and its latencies, for example, are operating as predicted and to find the cause of errors”, he explains. Engineers in the automotive industry

have been considering the use of CAN FD as vehicle electronics have become more complex and since its introduction by Bosch in 2012. Now that they are approaching the testing phase of their innovations, engineers have approached Yokogawa to add the capability for CAN FD to the ScopeCorder so that it is available when they need it. “Our many automotive ScopeCorder

customers recognise that it offers them a means of meeting their testing needs and enables them to easily analyse data without the need to synchronise and import data from multiple instruments and devices. We’re now happy to be able to meet their requirements for CAN FD monitoring,” says Marrinan. The new module is also compatible with classical CAN and will replace the existing 720240 CAN-only model. n

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