| 摘要 |
PURPOSE: A system of sending data for a subway infovision is provided to send data by the infovision of the subway with low expenses even if the mobile communication nets aren't installed in there. CONSTITUTION: The device includes a terminal, the first RF module, the second RF module and an infovision. The terminal is installed in the building of each subway station and receives the data sent from the information supplier by wire and stores them temporarily. The first RF module is installed under the ground and receives the data from terminal and sends the data to the subway by radio when the train stops. The second RF module is installed in the subway and receives the data sent from the first RF module by radio. The infovision is installed in the passenger car and displays the data, which the second RF module received, to the passengers.
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