Micro-Epsilon UK Ltd. - PRODUCT NEWS
Laser sensors measure height of concrete blocks during manufacture
Micro-Epsilons optoNCDT 1700 laser displacement sensor is being used to measure the height of concrete blocks during the production process.
German company R&W Industrieautomation has developed a special purpose, automated system for measuring the height of concrete blocks. The system is a fully automatic, in-process inspection system that records the height of concrete blocks during the production process. All components are integrated within the system itself; no additional hardware is needed. All thats required is a network interface and a power supply. The sensor can be operated within the entire network or can communicate with other systems. The user interface is intuitive, so no special skills are required to use it.
R&Ws height measurement system utilises Micro-Epsilons optoNCDT 1700-500 laser displacement sensors. The measurement system is placed as close as possible behind the concrete block making machine, above the transport conveyor for the baseboards. The concrete blocks running below the device are scanned by the non-contact laser sensor and measured to an accuracy of +/- 0.5mm. At the same time, the blocks baseboards represent the reference distance.
The optoNCDT 1700-500 sensor is customised for R&W in a double width enclosure. R&W integrates a powerful micro-controller with an Ethernet interface into the sensor, as well as digital I/Os. This complete automated measurement system enables complex evaluations of sensor data, communication with master control devices, as well as graphical data visualisation via web servers. This flexible, modular system enables cost effective customer-specific applications.
In this particular application, the sensor measuring range required was up to 500mm, with resolution down to 30mm. The sensor also had to be robust enough to withstand the harsh, dusty manufacturing environment. Very good suppression of extraneous light was also an important factor in sensor selection.
The optoNCDT 1700 is a non-contact laser displacement sensor that not only incorporates Micro-Epsilons patented Real Time Surface Compensation (RTSC) technology and remote software programming, but also offers excellent linearity and resolution. Integrated conditioning electronics enables the sensor to have a unique, compact design.
For poor reflecting targets, the measuring rate can be reduced to enable a longer exposure time. The set measurement rate always remains constant so that with closed-loop control the system response time is always the same.
As well as for precise measurement, the optoNCDT 1700 sensors are also used for tolerance or limit monitoring. Two switching points are available, which can be configured and adjusted via the remote software (USB connection). The switching hysteresis can also be individually adjusted for each limit point.
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