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Remaining status display device of roll paper for ticket sale
Remaining status display device of roll paper for ticket sale
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机译:售票用卷纸的剩余状态显示装置
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摘要
The purpose of this study is to provide a device to mark the remaining status of ticketing paper.;This research is carried out on the ticket vending machine,On the inner side of the guide rod in contact with the roller,From the center of the guide rod to the outside, a plurality of luminous sensors with a certain interval are arranged;It can be arranged on the front surface of the window panel of the roller,The light blocking of the middle sensor reduces with the water receiving sensor;Connected to the above water light sensor,Signal amplification of amplified signal;Connected to the signal amplification point above,Input analog signal,A / D conversion unit for digital signal output;And connected to the above a / D realization part,With full panel display means.;Therefore, the manager of vending machine can master the remaining volume of ticket vending machine and replace it in an accurate period. Therefore, it can eliminate the inconvenience caused by the insufficient ticket volume.
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