Activities

Monitoring and sensing systems

Smart sensing, acquisition and supervision

We are experienced in carrying out in-the-field diagnostics of a given situation. After our diagnostics, we design and manufacture sensing and monitoring systems measuring physical parameters in extreme environments.

We are able to achieve a high level of integration of mechanics, electronics and software, knowing that the designed sensing device has to operate reliably in harsh environments.

One example is our Structural Noise Sensor (SNS Blade) installed in wind turbine blades as part of a Structural Health Monitoring System (SHM Blade) that continually checks the blades’ structural integrity and/or ice deposit.

Integrated sensing elements (acceleration and temperature) have to be highly sensitive without being influenced by the strong magnetic perturbations present in wind turbines. They experience very large temperature variation while maintaining good accuracy. And – last but not least – they must survive thunderstorms with no alteration to their performance.

Another example is our handarm vibration metre. It is a highly integrated vibration data logger that is attached to hand-tool handles in order to compute the vibration dose the worker is exposed to. On some highly percussive tools, it has to measure and sustain as much as 5000g shocks, execute standardised filtering and log data for long periods.

We design sensors, acquisition systems and processing algorithms, separately or in any combination for specificapplications and environments.

Examples of applications

1

Structural health monitoring for blades in wind turbines

SHM Blade detects structural changes relating to a certain reference condition. This reference condition is determined fully automatically without any help from the outside and individually for every single rotor blade immediately after the activation of SHM Blade.

Such a blade-specifi c learning phase ensures high sensitivity to damage despite the mass and stiffness tolerances caused by production.

After completion of the learning phase the system continuously calculates condition indicators, which furnish information on the current condition of the blade at all times. By means of a two-level warning and alarm concept the system control is capable of reacting to and preventing subsequent damage. More detailed information can be provided via a web interface of the backup and monitoring system.

2

Structural health monitoring for ice detection in wind turbines

IDD Blade detects ice on rotor blades. As the sensors in the rotor blades directly record the actual icing condition, the results
are much more reliable than an assessment based on meteorological parameters.

Ice detection with IDD Blade is available as an option to SHM Blade.

3

Human vibration meter vib@work

In order to help companies to comply with health and safety requirements regarding the exposure of workers to the risks arising from vibrations, Micromega Dynamics has developed a complete range of vibration metres. Based on an innovative concept, the Vib@Work Hand-Arm and Whole-Body vibration metres automatically measure operators’ daily vibration exposure. Vib@Work Hand-Arm and Whole-Body are the next generation of human vibration metres/monitors.

icons-gms

 

gms-example-1

Seated operator exposure

1. Vib@Work Seat

 

 

 

 

gms-example-2

Stand-up operator exposure

2. Vib@Work Floor
3. Vib@Work Detect

 

 

 

gms-example-3

S.E.A.T. Factor

1. Vib@Work Seat

2. Vib@Work Floor