- Email: [email protected]
Image processing boards
-New equipment They have built-in excitation sources and scaling capabilities to accept a wide range of bridge transducers. Available options include analogue or digital outputs and set point control. Fully configured at the factory, the following items remain available for reconfiguration: • Input option (excitation, input sensitivity, zero offset, gain). • Preset values and alarm operating modes. • Time delay (0-15 s) or hysteresis levels (0 to 10 counts of LSD). • Transmission output card for the type of signal and its range. • Zero, span adjustments and decimal location.
Digital indicationsfrom Graham& WhiteInstrumentsfor displayof straingaugeinformation
Graham & White Instruments Ltd., 135 Hatfield Road, St. Albans, Hefts, AL 1 4LZ, UK
gauges and prefer a more substantial item rather than the plastic foils.
Coated thickness standards
Elcometer Instruments Ltd, Edge Lane, Droylsden, Manchester 114436BU, UK
Traceable and certified standards for coating thickness measurement are available from Elcometer Instruments. They can be used by companies operating formal quality systems like ISO 9000 to verify that their gauges and calibration foils give valid readings of the thickness of paint and other surface coatings. The coated standards comprise four coated metal blocks and one without any coating, acting as a zero. Its orange plastic cover makes the folder visually obvious and its rigidity protects the blocks from damage in storage and in use. Each set has a unique reference number which is referred to on the calibration certificate. The traceability path is also shown on the certificate, listing the equipment used to make the initial measurement. The sets are also useful for inspectors working on-site who need to verify performance of
Image processing boards A range of PC-based image processing boards has been launched by ERA Technology, incorporating a number of features normally only found in expensive image processing systems or designed into custom hardware. The first product is a dual channel real-time convolver card with DT-Connect interfaces. Unlike other similar PC-based products, this is capable of supporting line lengths of up to 2048 pixels, making it particularly suitable for use with high resolution line-scan cameras. For those who wish to process video data using an array of TMS320C40 DSP processors, a TIM-40 interface board is available for this purpose. This product, which has three FIFO buffered channels, allows
conversion between DT-Connect pixel streams and the 8-bit parallel data stream used on TMS320C40 communications links. The range also includes a phase locked loop card, suitable for use with standard or time delay integration (TDI) line-scan cameras. A typical application would be where an image acquisition system has to be synchronized to a fast moving field-of-view in order to obtain square pixels for a range of camera geometries. Finally, a dual channel general purpose image processing card set provides cascaded high order 2D convolvers, along with a pair of floating point programmable DSP processors (one on each channel). The boards were developed as part of a DTI funded programme whose objective was to make low cost automatic visual inspection available to wider areas of industry. It was necessary to incorporate the functions into the boards to achieve this objective.
ERA Technology Ltd, Cleeve Road, Leatherhead, Surrey KT22 7SA, UK
NDT&E International 1994 Volume 27, Number 1
61
Digital indicationsfrom Graham& WhiteInstrumentsfor displayof straingaugeinformation
Graham & White Instruments Ltd., 135 Hatfield Road, St. Albans, Hefts, AL 1 4LZ, UK
gauges and prefer a more substantial item rather than the plastic foils.
Coated thickness standards
Elcometer Instruments Ltd, Edge Lane, Droylsden, Manchester 114436BU, UK
Traceable and certified standards for coating thickness measurement are available from Elcometer Instruments. They can be used by companies operating formal quality systems like ISO 9000 to verify that their gauges and calibration foils give valid readings of the thickness of paint and other surface coatings. The coated standards comprise four coated metal blocks and one without any coating, acting as a zero. Its orange plastic cover makes the folder visually obvious and its rigidity protects the blocks from damage in storage and in use. Each set has a unique reference number which is referred to on the calibration certificate. The traceability path is also shown on the certificate, listing the equipment used to make the initial measurement. The sets are also useful for inspectors working on-site who need to verify performance of
Image processing boards A range of PC-based image processing boards has been launched by ERA Technology, incorporating a number of features normally only found in expensive image processing systems or designed into custom hardware. The first product is a dual channel real-time convolver card with DT-Connect interfaces. Unlike other similar PC-based products, this is capable of supporting line lengths of up to 2048 pixels, making it particularly suitable for use with high resolution line-scan cameras. For those who wish to process video data using an array of TMS320C40 DSP processors, a TIM-40 interface board is available for this purpose. This product, which has three FIFO buffered channels, allows
conversion between DT-Connect pixel streams and the 8-bit parallel data stream used on TMS320C40 communications links. The range also includes a phase locked loop card, suitable for use with standard or time delay integration (TDI) line-scan cameras. A typical application would be where an image acquisition system has to be synchronized to a fast moving field-of-view in order to obtain square pixels for a range of camera geometries. Finally, a dual channel general purpose image processing card set provides cascaded high order 2D convolvers, along with a pair of floating point programmable DSP processors (one on each channel). The boards were developed as part of a DTI funded programme whose objective was to make low cost automatic visual inspection available to wider areas of industry. It was necessary to incorporate the functions into the boards to achieve this objective.
ERA Technology Ltd, Cleeve Road, Leatherhead, Surrey KT22 7SA, UK
NDT&E International 1994 Volume 27, Number 1
61