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Motion sensor controlled vending machines

2 bytes added, 21:38, 5 February 2010
The Technology
The typical duty cycle of the motion sensor controlled vending machine revolves around whether people are around the machine or not. Usually power is cut off to the machine within 15 minutes of a person’s presence in front of it. Most devices are designed to shut off for approximately 2 hours and then turn back on activate a compressor cycle in order to maintain an optimal interior temperature. When a person walks up to it, the machine lights, electrical components and compressor are activated in order to provide service for the person. <br />
In order to prevent high-head- pressure restarts on the compressor, general control logic ensures that it is allowed to run a complete cooling cycle before shut down and a sensor ensures that the machine does not shut down before the cycle is complete. <ref> E Source Companies LLC (2009), ''Vending Machine Energy Savings'', </ref>

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