Based on its core technologies, VioSense Corporation has developed a new patent pending miniature laser velocimeter. It is a self contained, waterproof and permanently aligned sensor. A photograph of the MiniLDV including the optical sensor and the power supply electronics is shown below. The MiniLDV unit contains a laser, miniature beam shaping optics, receiving optics, and a detection system. The sensor is 38 mm (1.5") in diameter and 100 mm (4") long, and the fixed distance between the sensor and the probe volume can be selected between 40 mm to 150 mm

Miniature velocimeter and power supply

  Standard options available for the MiniLDV includes a computer-controlled linear traversing instrument (seen as one of our custom installations), and signal processing. (More information on the signal processing system coming soon!)

  VioSense presents a complete and affordable laser Doppler velocimeter system for Fluid Mechanics laboratories and educational institutions. It includes the laser velocimeter attached to a traversing mechanism, the processing software, and traversing control software, with user interface software.

  The boundary layer velocity survey shown below was obtained with the traversing miniature laser velocimeter mounted on a flat plate in a small educational water tunnel.

Example of a boundary layer profile obtained with the traversing Minature Velocimeter