PARKING LOT CONTROL SYSTEM DEVICE

摘要

PURPOSE:To save labor for wiring work by transmitting control information by multiplex transmission through a multiplex transmission line among a master station and plural slave stations. CONSTITUTION:This parking lot control system device provided with plural vehicle existence detecting sensors S for detecting whether an automobile parks in each parking area in a parking lot or not, display devices P for guiding an automobile to an empty parking block and a central control unit 1 having a data processing part for controlling the display devices P based upon detection information outputted from the sensors S is also provided with plural multiplex transmission slave stations A dispersely arranged and connected to near sensors S or display devices. The central control unit 1 is provided with a multiplex transmission master station 15 for receiving the detection information of the sensors S connected to respective slave stations A as detection data through multiplex transmission lines L and applying control data to the display devices P and a shared data table to be shared by the data processing part and the master station 15.