The Transport Research Center of CEDEX in Spain conditioned, monitored and measured data from more than 240 channels distributed strategically around the track by HBM’s data acquisition (DAQ) System, the proven MGCplus DAQ system.
The system for data acquisition of the sensors, which is fully automated, has been designed and developed by CEDEX and makes real-time measurement and storage in database possible for up to 240 sensors on every measurement test.
The management tasks are divided into three processes:
Once the plan of instrumentation for each test has been designed and the supply of each sensor has been carried out, the next step is to register it into the system database of the Control Computer. It is then time to include all the data which define the sensor, its location, the optical measurement startup sensor, relevant dates and state of activity.
After the sensor has been registered in the database, the next step is setting the MGCplus modules to carry out the calibration curve of each sensor, including whole measurement chain (wires and device), relating the electrical measure to the physical measure. Then the recording parameters (sample rates, time, sensors activated, and trigger) are set with the PC card manager of the MGCplus and the .MPR file is saved. It is usually programed two different sampling rates; one of them is for recording the static variables and the other one for recording the dynamic variables. Figure 8
There are also additional tasks which simplify the instrumentation maintenance work and feature graphical and numerical real-time monitoring functions of the readings.