Train-information managing apparatus

摘要

A train-information managing apparatus receives a series of control information attached to serial numbers, which are transmitted from a central apparatus, in order of the transmission and carries out control in the order, and even when the central apparatus is changed or the serial numbers are reset, prevents a blank period of control from occurring. Therefore, when a reception serial number n included in received data is a preferential serial number (n≦M) and an old number nprev, which is a serial number included in data received and stored last time, is a cyclic serial number (nprev≧M+1), the train-information managing apparatus stores the received data.

主权项

1. A train-information managing apparatus comprising:
central apparatuses mounted on each car at both ends of a formation of a train, wherein the central apparatuses comprise a first central apparatus and a second central apparatus; terminal apparatuses mounted on each intermediate car of the formation; and a trunk transmission line that communicatively connects the central apparatuses and the terminal apparatuses,
wherein when the first central apparatus transmits data including its own car information to the second central apparatus at a fixed cycle via the trunk transmission line, only the first time after a start-up of the first central apparatus, the first central apparatus:provides first serial numbers including a plurality of numbers which have an order specified in advance, to the data according to a transmission order,wherein when all of the first serial numbers are used,
provides second serial numbers, including a plurality of numbers specified in the order and numbers subsequent to the first serial numbers, to the data according to the transmission order, andafter the second serial numbers are used until a last number, returns to a first number in the second serial numbers and provides the second serial numbers to the data in order, wherein when a serial number included in data received from a terminal apparatus of the terminal apparatuses of an adjacent car on the side of the first central apparatus or from the first central apparatus is one of the first serial numbers and the last stored serial number in the terminal apparatus is one of the second serial numbers, the terminal apparatus stores the data received, and wherein when a serial number included in data received from the terminal apparatus of an adjacent car on the side of the first central apparatus is one of the first serial numbers and the last stored serial number is the second serial number, the second central apparatus stores the data received.