Rig Testing

Eventscan RIG - Brake noise & vibration measurement systems

EventScan RIG is a fast, accurate and reliable test system from STAC that is widely used in the brake industry. It is designed to collect brake performance data and identify and analyse brake noise and vibration effects (e.g. identifying and locating events caused by brake squeal, judder, groan, DTV, etc.).

The system is compatible with all common brake noise test standards (such as AK Standard, SAE J2521, etc.) and meets the requirements of the current EKB recommendations on brake noise testing (such as EKB 3006, EKB 3007, EKB 3008, EKB 3009, etc.). The development of the current EventScan software is now based on experience with more than 500 installed systems.

Detecting brake noise & vibration in real time

Data acquisition is divided into two general signal types - so-called "high speed" signals (sampling rate typically 51,200 Hz) and "low speed" signals (sampling rate typically 100 Hz).

"High Speed" inputs are used to detect higher bandwidth signals (up to over 20 kHz) such as sound pressure and vibration for noise detection, and/or other fast varying signals to analyse high frequency variations of torque, pressure and disc thickness, detect torsional vibrations, etc.

In contrast, the "Low Speed" inputs are used for signals with low bandwidth, such as general status signals for the brake (e.g. speed, temperatures, torque, pressure, etc.) or status and trigger signals (e.g. Brake-ON, Record-ON, Test Active, etc.). For this purpose, the system offers the possibility to use a variety of additional analogue or digital signal sources.

The raw signals of all "high-speed" inputs can be recorded in real time (e.g. for noise reproduction or offline analysis). In parallel, all "high-speed" signals are also fed into the analysis area and processed in real time. Analysis results and low data rate signals are synchronised (e.g. to determine exactly at which braking condition a noise event occurred - e.g. speed, temperature, pressure -). In addition, special calculations are performed for low-speed signals (such as determining deceleration (mfdd), coefficient of friction, braking distance, etc.). All signals and analysis results can be recorded.

Multitude of options

  • High Speed Analog Inputs

    The modular system layout allows up to 48 high speed analog input channels. All such inputs provide IEPE/ICP sensor power supplies, AC/DC coupling circuits, programmable high quality instrument amplifiers, automatic anti aliasing filters, and 24 bit A/D converters

  • High Speed Pulse Inputs

    High speed pulse tachometer inputs may be used with any sensor providing pulse output signals. The tachometer inputs are as well synchronized with the high speed analog input channels.

  • CAN Bus & FlexRay Ports

    The system can be equipped with two additional CAN/CAN-FD interfaces fir vehicle, dynamometer, or the flexible integration of additional measurement components.

    A FlexRay interface can also be provided for vehicles that supply the signals of interest for brake development on the FlexRay.


    For the remaining analogue signals, analogue low-speed inputs are offered by the system. Possible signals here are e.g.: Brake pressure signals, signals from the volume flow measuring units.

    Each input also offers the option of providing an adjustable power supply for the connected sensor. The analogue low-speed inputs can be used at a rate of 100 Hz. Sampling is synchronous with the sampling of the high-speed signals.

  • Thermo Couple Inputs

    The system can be provided with 32 thermocouple inputs. These operate at a standard capture rate of 10 Hz; optionally, inputs with a capture rate of 100 Hz can be provided.

    The optional connection of thermocouples via CAN bus extension modules allows the connection of a large number of thermocouples with reduced cabling effort.

  • Flexible System Integration

    Various interface options allow flexible integration of the Eventscan RIG system into the test stand control: analogue IO & trigger signals, CAN bus, LAN or CAN bus with TCP/IP server - to match the test stand architecture.

Flexible integration...

Various interface options allow flexible integration of the Eventscan RIG system into the test stand control: analogue IO & trigger signals, CAN bus, LAN or CAN bus with TCP/IP server - to match the test stand architecture.

...to fit your needs

EventScan RIG offers comprehensive options for displaying the current measurement and analysis data in real time. The display is freely configurable and is stored separately from the test parameters.

The configuration of the display can vary depending on the type of test and can be realised by calling up a layout file. This selection is made by the host computer via the interface.

Need more information? Contact us!

The modular rig measurement system for brake testing - precise and flexible.

Whether noise or performance measurements - thanks to its modular design, the Eventscan RIG system can be optimally adapted to your measurement task.

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(c) STAC Elektronische Systeme GmbH

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