Follow on Google News News By Tag Industry News News By Location Country(s) Industry News
Follow on Google News | Diesel Particulate Filter Testing with Vehicle Data AcquisitionDelphin Expert Logger Vehicle Data Acquisition and Control System
By: CAS DataLoggers Twin-Tec was therefore developing many different retrofit filters for many different automobile models. Each filter required testing on the road under typical driving conditions to determine filter efficiency—however, virtually every new filter also required a new design due to the wide variety of exhaust systems and their varying temperature and pressure operating levels. During test drives, the filter temperature, pressure, engine speed, idle times, vehicle position and speed all needed to be measured accurately and reliably to ensure that the filter met all required standards. To record all the test data, Twin-Tec needed a sophisticated data acquisition device capable of extreme accuracy and fast signal processing that could capture the wide range of data required in the tests. Installation Twin-Tec installed a Delphin Expert Logger 200 (https://www.dataloggerinc.com/ The Expert Logger 200 featured 21 analog inputs and 8 digital inputs/outputs as well as an Ethernet interface and CANbus for expansion modules. The analog inputs could be attached to RTD sensors, thermocouples, voltage or 4-20 mA signals, enabling any physical measurement to be recorded. The measurement data was saved as scaled engineering units and linearized to the device. The high measurement accuracy, up to a 24-bit resolution, enabled precision measurements without need for signal amplification. Usage The Expert Logger can process each input signal quickly and reliably from just a few thermocouples right up to thousands of measurement points spread over several areas. The vehicle data acquisition device also features screw terminal connections and up to 16 GB of local memory. The Expert Logger offers powerful alarm and programming capabilities to allow the device to process measurements and initiate actions on its own. The Expert Logger can be used for local data acquisition and logging when connected to a PC; for remote unattended data collection connected to the internet or LAN; or as a stand-alone device. To record the vehicle speed and direction, a special NMEA driver for a GPS sensor was developed. This driver was interfaced to the Expert Logger through serial RS232 port. A separate COM channel was created for the GPS information like speed, direction, altitude, etc, and all the data was stored directly on the 16 GB Expert Logger memory. After the test drive was finished, all the data was analysed with the ProfiSignal software. This user-friendly software was used for configuration of the input channels, processing and analysis of the data and export to .csv form for reporting. It was also possible to convert the GPS data into a KLM file which could be loaded by Google Earth to plot the data against map position. Benefits Twin-Tec benefitted immediately from installing the Delphin Expert Logger 200 (https://www.dataloggerinc.com/ If Twin-Tec needed to expand the number of channels used, Delphin slave module chassis were also available to expand the Expert Logger to a maximum of 1000 hardware/software channels. Up to ten slave devices, each with identical housings and each equipped with two I/O modules, could be attached to a master, with any combination of I/O modules being possible. For more information on the Delphin Expert Logger (https://www.dataloggerinc.com/ End
Account Email Address Account Phone Number Disclaimer Report Abuse
|
|