The evec is an easy and cost-effective:wireless and standardized measurement of whole-body vibration.

evec was designed to facilitate the measurement and evaluation of whole-body vibration. evec offers advanced technology which can be learned easily and quickly, even by untrained users.

The seat sensor, including its integrated memory, is just placed on the driver's seat – without having to be mounted mechanically and without needing any disturbing cables. The sensor is activated and the measurement thus started with just a few operator steps. The necessary software is installed on a PDA or a notebook with Bluetooth interface. You need just a few settings – and your evec system is ready for use. The data recorded is also read from the seat sensor through Bluetooth. There are no annoying cables which might be damaged during the measurement. The driver does not have to do anything. The evec system automatically registers when the driver gets up and, complying with EN 14253, cuts off the peaks when the driver sits down too energetically.

This allows precise measurements of the load to which the driver is exposed through the effect of vibrations. Special data preparation is not necessary. Conforming to EU Directive 2002/44/EC, the evec software calculates the A(8) value of the daily exposure, no matter whether the measurement covered the full span of eight hours or whether evaluation is based on a shorter time period.

Standardized measurement

Any measurement series may be subject to undesired effects which falsify the calculated day load, for example, if the driver gets up and sits down frequently. The intelligent triaxial sensor excludes all of these undesired effects from calculation. The evec system takes such exceptional loads as well as breaks into account and, conforming to EN 14253, automatically eliminates such peaks and breaks from calculation of the total load. This excludes any manipulation of the measurement on the driver's part.
 

Performance Hardware

• evec seat pad according to ISO 10326 (in black) with integrated triaxial acceleration sensor
• Microcontroller for evaluating acceleration signals according to ISO 2631
• Algorithm for identifying and eliminating undesired effects
• Driver-seat contact sensor
• Wireless communication between sensor and PDA or Notebook/PC

Standards Met

• EU Directive 2002/44/EC of 25th February 2002, governing the protection of workers against risks arising from vibrations
• Decree of 6th March 2007, regulating the adoption of EU Directive 2002/44/EC
• ISO 2631 – Mechanical vibration and shock
• ISO 10326 – Mechanical vibration – Laboratory method for evaluating vehicle seat vibration
• ISO 8041 – Human response to vibration
• VDI 2057 – Human exposure to mechanical vibrations –Wholebody vibration