Abstract
The thesis introduces one kind of the canvas rolling from the programmable controller (PLC) , infrared sensor , electric motor for new model advertisement that the main component composes announces a device advertisement control device mainly. That advertisement is equipped with this new model rolling canvas under the control of is in open-air lamp case with five tableaux link dress , canvas uses electric motor to drag moving , may carry out circulation display , amounts big , dynamic information effect about well, simultaneous being able to carry out the line introducing or propagating the scenery composing one, in street on diversified commodities introduces that in being unable to apply to market big to being in progress as well as merchandise news selling condition. Canvas is not bad change at the regular intervals , be unlike conveniently commodity need.
Circulation work process is middle in canvas, each canvas tableau the time appearing all keeps the tableau changing again to time as soon as serial number after showing certain time consistently. And PLC is in progress to 5 tableaux motion by the software program under the control of, have overcome an automation running middle various problem that can come across , have ensured that canvas works according to demanding correctly. Besides, should control a device having hand movement/ the automation changes shut-down , interruption of power supply by all means , holds at the regular time/ to keep functions such as reaching the malfunction diagnose and giving an alarm.
Keywords: Canvas rolling advertisement; Programmable Logic Controller(PLC); The automation works; Malfunction give an alarm
