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SENSORS & SENSING SYSTEMS ADVERTORIAL SICK Delivers the Future with Smart Sensor Technology “First”


“Real time events can be locally processed, without waiting for the raw data to be uploaded to the central PLC program, processed and information extracted before action. Speed restrictions due to heavily-loaded networks are avoided and demands on the central computing functions are massively reduced.


Advanced functions that have already been developed by SICK for Smart Sensors include a high-speed counter, timer, false tripping suppression, a speed and acceleration monitor and time-based measurement function to track and identify products for sortation and picking. Currently, typical sensors that can be specified with these functions include the SICK W4S-3, WTB12-3 and WL12-3


Smart Sensors build on the existing sensor capabilities and can also share the results and data with the control system PLCs via IO-Link using standard sensor cables.


A wide selection of IO-link gateway cards are available from the major PLC manufacturers to integrate Smart Sensors into automation networks; with Smart Sensors able to multi-task, many traditional sensor tasks can be combined, reducing equipment cost.


Smart Examples


ECHNOLOGY developers at SICK have built powerful new functions into everyday sensors to deliver a glimpse of the future for manufacturing automation. SICK believes it is the first company worldwide to launch advanced ‘Smart Sensors’ across its product ranges.


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Smart Sensors are a complete step forward in sensing performance, equipping photoelectric, magnetic and proximity sensors with powerful on- board processing capability to optimise machine technologies and automation on high-speed production lines.


As chip technology has enabled more functionality to be packed into ever more miniature devices, SICK has identified opportunities to integrate advanced automation capability into the sensors themselves.


“By building advanced intelligence into standard sensors, SICK has made sensors ‘Smart’ and achieved a world first,” says David Hannaby, Product Manager for Presence Detection at SICK UK. “Smart Sensors perform complex process functions locally moving them away from the PLC to the sensor itself.


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Embedding a high-speed counting function into a Smart Sensor enables high-performance monitoring and measurement of machine speeds, leading to accurate detection and counting. So, for example, an optical sensor can detect and count products on a production line and transfer the results to the control system.


A Smart Sensor can use Time-Based Position Measurement to calculate product length, or distance between objects on a high speed conveyor, to ensure they are the right size or in precisely the right position, for example for picking or dimensions measurements of packages.


With the ability to Suppress False Signals (debouncing) from an anomalous triggering event in difficult environments such as sawdust and spray or with product protrusions, Smart Sensors can make real time decisions which reduce central computing load and network signal delays and errors. Product Profile Recognition and timing functions can also be combined to provide Product Verification capability to ensure products are of the right shape or in the correct position for tasks such as picking, sorting or have right packaging.


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