4.1.1 SensorsAndMotors_VEX.pptx - Introduction to Sensors...

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Introduction to Sensors and Motors: Copier Jam Detector DMS-VEX or DLB-VEX © 2014 Project Lead The Way, Inc. Digital Electronics
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Design Specifications As the paper passes through a copy machine, three sensors monitor its path. The sensors are switches that are internally wired as Normally Open. Test fixture constructed with VEX ® components. 2 Sensor A Sensor B Sensor C Paper Path Motor
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Design Specifications When paper makes contact with the switch, the switch outputs a logic one (1). When paper is not present, the switch outputs a logic zero (0). 3 Paper = Logic 1 No Paper = Logic 0 Switch Paper If a jam occurs, the feed motor will stop.
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Design Specifications Under normal operations, paper will pass through the sensors such that adjacent sensors will not simultaneously detect paper. If they detect paper, this indicates that a paper jam has occurred. Shown are a few examples of both Jam and No Jam conditions. 4 No Jam Jam Jam No Jam
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Design Specifications When a paper jam occurs, an
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  • Fall '19
  • Boolean Algebra, Boolean-valued function, • Motors

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