| 摘要 |
PURPOSE:To enable versatile operating management for the entire operating region of incoming and outgoing cars, by switching a plurality of antennas on load in the predetermined order sequentially and transmitting the signal to the cars for communication. CONSTITUTION:Four antennas 6, 7, 6', 7' are installed on a car path and communication is made while switching the four antennas. The switching period in this case is 20 milliseconds and the incoming or outgoing of progressing cars is discriminated from the number of antenna communicated first. That is, if this number is the antenna 6 or 7', it means incoming and if this number is the antenna 6' or 7', then it means outgoing. Further, a central controller 9 makes a predetermined instruction depending on the incoming car number, and it confirms the passing of the car to incoming or outgoing direction for a specific location and transmits a control signal to related points. |
