On-vehicle data transmission network |
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| 申请号 | JP22474585 | 申请日 | 1985-10-11 | 公开(公告)号 | JPS6187439A | 公开(公告)日 | 1986-05-02 |
| 申请人 | Hitachi Ltd; | 发明人 | SAITO KUNIO; SATO HIROSHI; TASHIRO FUSASHI; | ||||
| 摘要 | PURPOSE:To prevent electromagnetic induction and to simplify connection between cabins by using an optical fiber for a transmission line in a vehicle and applying optical space transmission line to the transmission line between the vehicles in the transmission of data where transmission stations in a train and the transmission are arranged. CONSTITUTION:The data transmission line in a train is connected in a loop by data stations ST1-ST3 in each vehicle, an optical fiber cable L, space optical transmitters LTX1-LTX4, between vehicles and space light receivers LRX 1-LRX4. Data is transmitted electrically from a transmission control section TCU in the ST, converted into an optical signal by an electrooptic converter E/O and transmitted to the space optical transmitter LTX by the optical fiber L. The optoelectric converter O/E in the LTX converts an optical signal into an electric signal, and amplifies the result, then the E/O generates a space optical signal, which is fed to the LRX. The O/E of the LRX receives the space optical signal and converts it into an electric signal, which is amplified and converted into an optical signal by the E/O and the result is transmitted to the optical fiber L. The optical signal from the optical fiber L is converted (O/E) into an electric signal by the ST and transmitted to the TCU. | ||||||
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| 说明书全文 | |||||||
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