CHOI, SEUNG WOOK,최승욱,CHOI, SUN UK,최선욱,CHOI, SEUNG WOOKKR,CHOI, SUN UKKR
申请号：
KR1020160128489
公开号：
KR1017941670000B1
申请日:
2016.10.05
申请国别(地区):
KR
年份:
2017
代理人:
摘要：
Provided is a DC motor controlling device for opening and closing a ventilated window capable of simultaneously rotating a plurality of parallel connected DC deceleration motors at a constant rotation number； and controlling the height of the ventilated window of a vinyl greenhouse to be the same when voltage drop is different because the length of the vinyl greenhouse is different or the length of a wiring is different. The DC motor controlling device for opening and closing the ventilated window comprises: a first relay unit； a second relay unit； a rectifying unit； a pulse generation switch； a third relay unit； a comparing unit； a pulse detecting unit； and a pulse counter unit. The first relay unit applies DC voltage of a ripple component to a DC deceleration motor to normally rotate the DC deceleration motor depending on selection of a forward/backward switch. The second relay unit applies the DC voltage of the ripple component to the DC deceleration motor to reversely rotate the DC deceleration motor depending on the selection of the forward/backward switch. The rectifying unit rectifies the DC voltage applied through the first relay unit or the second relay unit. The pulse generation switch is installed in a rotation shaft of the DC deceleration motor, and generates a pulse when the rotation shaft is rotated. The third relay unit is magnetized in the pulse outputted from the pulse generation switch, and resets the pulse generation switch. The comparing unit outputs a state signal of a predetermined level corresponding to the pulse outputted from the pulse generation switch by comparing the DC voltage of the ripple component applied to the DC deceleration motor with predetermined reference voltage. The pulse detecting unit outputs a pulse signal by using the state signal outputted from the comparing unit, and a first level state signal corresponding to a predetermined time constant. The pulse counter unit counts the pulse signal outputted from the pulse detectin
