Intelligent Build.tech Issue 09 | Page 64

FUTURE PROOFING
Dave Walsha , Sales Manager at DC motor supplier , EMS
That ’ s where an IoT-enabled BMS can come into play . With the ability to measure occupancy via dedicated sensors , the system can determine the best course of action to take with HVAC and lighting systems and identify patterns to optimise energy usage .
For businesses handling private information , providing confidential services and general comfort purposes , blinds are a necessity . But for safety and ease of use , it ’ s preferable to integrate window shading systems into the BMS . Larger buildings or those with windows in hard-to-reach places can particularly benefit , but automatic operation can help reduce wear and tear on all window blinds . There ’ s an efficiency benefit too , with one study finding dynamic roller shades to reduce heating energy use by up to 26 %.
Powered by small electronic drives
At the heart of these automated systems , be it the HVAC system or the window shutters , small electronic drive systems are essential in providing the necessary motion . These are typically comprised of one or more DC motors , with complimentary gearheads , speed and motion controllers available depending on the exact application .
For building automation applications , brushless DC motors are often the most suitable type of motor . These are based on electronic commutation . A permanent magnet rotates as the windings stay still as the stator . A control unit switches power in the motor windings , causing the rotor to rotate .
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