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Traffic analysis tool

Correlates sound with CAN signals

With Ipemotion 2014 R1, the Ipetronik division Ipemotion - Software (Germany) has released an updated version of its configuration and data acquisition software. This software version presents features like a CAN traffic analyzer, graphical filling level indication at A2L file import, a table display, and audio playback with analysis.

The software can correlate sounds with CAN signals in order to determine causes (Photo: Ipetronik)

THE CAN TRAFFIC ANALYZER WITH ITS TABLE DISPLAY ELEMENT supports CAN message display as traffic data (hexadecimal and decimal) besides common signal measurements. In traffic measurement, users can view and analyze CAN messages (data frames) online, as well as related CAN network information like status frames, remote frames, error frames, statistical frames and transmit frames. Relevant information is displayed in a table in the categories relative time (beginning at measurement start), CAN ID, name of message, message type, data length code (DLC), and data content. CAN traffic data acquisition is supported by the CAN acquisition plugin V1.05 or the logger plugin V03.52.

According to Felix Ottofuelling of Ipemotion, "the new CAN traffic analyzer instrument allows online CAN bus analysis. For experts, this feature is an important extension of the Ipemotion software packet since signal-based measurements (channels: Temp 1; Temp 2), bus diagnosis, and analysis of hexadecimal messages are now provided by one software tool."

Audio playback function cooperates with CAN

The audio playback function supports integration of data acquisition from the vehicle’s CAN network and measuring modules in combination with acoustic measurements. Acoustic signals, i.e. vehicle sounds, are recorded using a microphone either in combination with a data logger or with the software and the sound plugin on a PC. Recordings are stored as .wav files. These .wav files can be played back through the software and users can correlate sounds with other measured signals in order to determine causes. With this solution acoustic investigations can be incorporated into the early phases of vehicle development and manufacturers can analyze noise problems much earlier. Besides the .wav format, data can also be exported in .pak-atfx format. These file formats can be used for further analysis using specific acoustic evaluation software packets.

The A2L file import function relates to the import of description files at ECU signal measurements. Electronic control units can contain several 10 000 signals. Depending on device performance and design, only a defined number of DAQ lists are available for data acquisition. The graphical filling level indication allows users to clearly recognize how much capacity has been used up. Furthermore, the software features an optimization algorithm filling DAQ lists so that the highest possible amount of signals can be collected from the ECU.

The database management function allows users to manage custom map data (tiles) of particular regions. Instead of having to store map tiles in one large file, users can store relevant map sections, reload them, and share them with colleagues. In this way, data are easier to handle. Furthermore, information on covered regions and resolution of map tiles in the database is available.

The table display instrument presents various measurement channels in one table. According to the company, compared with alphanumeric instruments, the table instrument allows compact display of many clearly arranged channels. The table view is suitable for test bench systems or climate applications.

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