When using triangulation method for 3D measurements, the coordinates from laser profiles are calculated column by column, which is not disadvantageous for a use of two frame grabbers.įor the 3D measurement application, the sensor width is the maximum horizontal resolution in direction of the laser profile. Each grabber is responsible for the acquisition of one half of each image. The CMC-4000 uses two data channels when it is operating in high speed mode. "DMA900 technology" enables the frame grabber series to transfer up to 900 MBytes per second via PCIe x4 interface in the RAM of the host PC. These are programmable image acquisition boards which fulfill the acquisition tasks and additionally the processing of the images on the FPGA hardware. The camera is connected to two Silicon Software microEnable IV VD4-CL frame grabbers. The amount of image data of 1,5 GBytes per second has to be acquired, but also processed in real-time for online processes. The camera is especially suited for recording of fast movements by its electronic full frame shutter. The image data is transferred by four MDR connectors at double Camera Link Full Configuration with 10 taps each. For the transition period, creativity is needed to offer new speed classes even today.įor the new camera CMC-4000, VDS Vosskühler (an affiliate of Allied Vision Technology AG since ) has decided for an implementation, which guarantees compatibility to the Machine Vision standard Camera Link, but doubles the bandwidth.ĬMC-4000 of is a CMOS high speed camera, which is able to acquire images with a sensor resolution of 2320 pixels width and 1726 pixels height at 386 full frames per second. Future standards like CoaXPress, Camera Link HS and 10GigE will extend the performance bandwidth significantly and allow new application fields. Machine Vision has reached the limits of its specification for available sensors. The availability of high speed cameras is one of the most important requirements for most of the applications. When realizing an optical 3D measurement application by laser triangulation method, the spatial and temporal resolution of the sensor is mainly dependent of the measurement accuracy. For this purpose non-contact methods are almost solely used with need of high requirement on robustness and speed. The measurement technology of today has achieved accuracy and processing performance which allows an integration of acquisition and analysis in online production processes.
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