| 摘要 |
In conventional signal safety systems, there is room for improvement of the processing of cases in which a telegram has been lost due to some reason such as a device malfunction or an abnormality in wireless communications. In order to solve the abovementioned problem, the present invention provides a telegram recovery device for generating safety telegrams in a signal safety system wherein a safety telegram including, for example, occupancy right information for travel paths, is shared between trains by circulating the safety telegram sequentially between trains present on a travel path composed of one or more blocks for which occupancy right information is set, and wherein occupancy rights for each block of a travel path are set in the trains, the device being characterized in that: upon detecting an abnormality in the circulation of a safety telegram, information requesting information relating to the occupancy rights for each block is transmitted to trains present on the travel path; information relating to the occupancy rights for each block on the travel path is received from the trains present on the travel path; and a new safety telegram is prepared on the basis of the received information and transmitted to the trains present on the travel path. |
