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Data logging

USB stick vs. SD card

New Eagle (US) offers two embedded data logger solutions, which both provide the capability for event data recording and vehicle or system monitoring. The two solutions offer different amounts of CAN channels.

The Vee-CAN 320 Data Logger offers two CAN channels (Photo: New Eagle)

THE VEE-CAN 320 DATA LOGGERUTILIZES A USB 2.0 STICK for data storage and data retrieval. Two CAN channels are provided that log CAN data to a USB stick. Data can be saved as text files, which allows the users to import data into Excel or Matlab. The channels have configurable settings and the bit rates can be set independently. Data Logging is limited only by the size of USB stick and it is started automatically when the USB stick is plugged in. Logging also starts on power-up if the stick is in place. While the unit can function without user intervention, an interface button is provided to allow for multiple logging sessions.
The device is capable of logging at a rate of 1 ms. It manages to log 7 analog input voltages and also offers an EIA-232 interface. With a -40 °C to +70 °C operating temperature and IP67, the logger is suited for harsh environments. A colored display provides a real-time logging status.

The Vee-CAN 320 Data Logger offers two CAN channels (Photo: New Eagle)

The CAN Data Logger utilizes standard SD cards for data storage, allowing retrieving data for applications including Event Data Logging (EDR). This device is also capable of logging at rates of 1 ms. The built-in key switch detection and keep-alive circuitry ensure clean shutdowns and proper file closures. The device logs CAN data to an SD card and lets the user utilize configuration files to limit the data or to change CAN speed. It offers only one CAN channel with a bit-rate of up to 1 Mbit/s. It can log in a circular buffer method to keep the most recent data when the card is full, to function as an Event Data Recorder (Black Box). Data logging is limited only by the size of the SD card; at the moment 16 GiB cards are the largest supported. It offers a real-time clock with battery backup that provides date and time information for log files and firmware updates via the SD card.
Optionally key switch detection and a configurable warning horn are available. Indicators for CAN Tx/Rx traffic and bus errors are enabled and the log file is in a text file format that lists all CAN messages. This allows the user to import the data into Excel or other programs. The logger has a operating temperature of -40 °C to +85 °C and the logging status is indicated by LEDs.

The company also offers a translation software for both the CAN data logger and the Vee-CAN 320 data logger that translates the MEL raw CAN format on USB stick/SD card into engineering values using a DBC file. Also, this translator software can translate CANKing format data.

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New Eagle