Sensor Unaffected By External Lighting Conditions

IFM Electronic has launched the Efector PMD 3D, an industrial 3D sensor that can detect scenes and objects in three dimensions. The company said it has integrated its photonic mixer device (PMD) time-of-flight measurement sensing technology into a full-vision chip. The image sensor has 64 x 48 pixels. Each pixel of this chip matrix evaluates its distance to the object, resulting in 3,072 distance values.

The image of the object on the matrix and the respective distance values correspond to a 3D image. The geometrical characteristics of the object or the scene can be read from these values. This means the object and the sensor can be stationary; line scanning followed by complex post-imaging processing is simply not involved. The integrated time-of-flight measurement based on PMD technology allows evaluation of geometrical characteristics such as volume, distance, level or surface area.

The applications are easy to resolve, as the firmware has the capability - all users have to do is select the type of evaluation and set the parameters. Two switching outputs indicate the results; or alternatively, one of these switching outputs can be configured as 4-20mA/0-10V analogue output. The device is independent of, and unaffected by, external lighting conditions, having its own built-in infrared illumination.

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