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Home Sensors Remote Sensor of Vibrations

Remote Sensor of Vibrations

Description

The Remote Sensor of Vibrations (SENSOR) is based on coherent radar in millimeter wave band which illuminates the object under inspection -fig.1. The reflected signal is modulated by phase and amplitude due to the object vibrations.

Principle of the sensor operation
Fig. 1 Principle of the sensor operation

The scattered signals are priory processed in the interface unit and entered to the PC. To restore parameters of vibration special algorithm for signal processing was developed that permits to measure parameters of vibration including time structure and spectrum.


Innovative Aspect and Main Advantages

Comparatively with optical and ultrasonic sensing, use of radar sensing provides vibration measurements on long distances, independently of surface roughness and presence of oil film. As well it does not require any calibration (potential accuracy of vibration measurement depends on measurement accuracy of radar frequency).

Areas of Application

Remote vibration measurements of moving objects (rotary shafts, turbines, engines), in dangerous zones (chemically active environment, high temperature, pressure, radioactivity, etc.) and for remote objects (high-rise buildings, bridges, platforms, etc).


a/


b/

Fig. 2 Prototype of the near range sensor –
a) and for remote sensing – b)

Stage of Development

The prototype of the sensor is in development phase – laboratory tested.

Two types of the sensors were performed and tested: for near range operation – fig.2a and for remote sensing – fig.2b. The near range prototype consists of radar unit (to the left) and interface unit (to the right) that linked together by a cable.

The prototype for remote sensing contains coherent radar with high-directivity antenna which are jointly fixed on free adjustable mounting.

Contact Details

Usikov Institute of Radiophysics and Electronics, National Academy of Sciences of Ukraine
Contact person: Grigory Khlopov
Address: 12, Acad. Proskury str., 61085, Kharkiv, Ukraine
Tel.: (+38 057) 720 3574
Fax: (+38 057) 315 2105
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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