JPS5972249A - Data way reconstitution system - Google Patents

Abstract

PURPOSE:To reconstitute a data way at a high speed by sending the state signal of one station to its adjacent station in response to a circuit reconstitution start signal, and changing states of connections with a circuit on the basis of a state signal from the adjacent station in response to a circuit reconstitution end signal. CONSTITUTION:When a monitor station starts reconstituting operation in a dual loop data way ststem, a start command is outputted to the circuit 1. If a fault occurs in a station (k), the start command does not arrives to the station (k). Stations (i) and (j) receive the start command and output state answer signals to their upstream stations through the circuit 2 respectively. When the monitor station outputs an end command to the circuit 1, each station decides on whether the circuit connected to the station is placed in loop-back mode or forward mode on the basis of the state answer signal from the downstream station.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a dataway reorganization system having a double loop configuration.

[Technical background of the invention]

Loop type data way systems that have been constructed in recent years mainly have a double loop configuration as shown in FIG. This has advantages such as high system reliability and easy system expansion. In Figure 1, 1 is r
- At the Tawei monitoring station, do you issue one step at a time from the station closest to you? - Performing a ring. Further, 2 is a general station, which is connected to the double roof "3. Further, 4 is a computer or terminal connected to the data way monitoring station 1 or the general station 2. As shown in FIG. In such a Roog type r-way system, if a failure occurs in the installed cable or station, the dataway system is reorganized by a so-called loopback function, as shown in Figures 2 and 3. Figure 2 shows the case where a failure occurs in the installed cable, and Figure 3 shows the case where a failure occurs at the station.In other words, the data way reorganization as shown in Figure 2 or Figure 3 is necessary. In this case, as shown in Figure 4, the monitoring station 1 that manages the dataway will
The system was reorganized after exchanging messages by polling as shown in steps 1 to 2 in each station.

In FIG. 4, 2n indicates the n-th general station, ■ is a line reorganization start command, ■ is a response to ■, ■ is line check data, ■ is a return of the data of ■,
■ is a line configuration command, and is a response to ■.

[Problems with background technology]

As shown in Figure 4, monitoring station 1 exchanged messages with nearby stations by polling as shown by ■ to ■ before reorganizing the system. The drawback is that it takes time and that time has a great impact on the system.

[Purpose of the invention]

The present invention has been made in view of the above points, and its object is to provide a high-speed data way reorganization method in a loop type data way system having a double loop configuration.

[Summary of the invention]

In a loop data transmission system in which a plurality of data transmission stations are interposed on a double loose data transmission path and information is exchanged between various devices via the transmission path and stations, a line reorganization start command from a monitoring station The transmitting unit of each station sends the status signal of its own station to the receiving unit of the adjacent station, and based on the status signal sent from the adjacent station in response to the line reorganization completion signal from the monitoring stage, the connection determining unit and the connection status with the line.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 5 shows a part of the double loop dataway system, and shows the connections between stations 1 and 1 and lines 1 and 2. Further, FIG. 8 shows the configuration of each station 1 to 1 shown in FIG. 5. That is, in FIG. 8, No. 1 is a connection determining circuit that determines the connection state of the line. Reference numeral 12 denotes a switch circuit for determining a combination of line connections, and the combination of line connections is determined by a signal from the connection determination circuit 11. Reference numeral 13 denotes a station status signal transmitting/receiving circuit, which receives the station status signal from the stage one stage downstream, and transmits the station status signal to the stage one stage upstream. 14 is a message transmitting/receiving circuit for exchanging messages with a monitoring station (not shown). Reference numeral 15 denotes a control circuit including a microprocessor, which controls the transmitting/receiving circuit 13 and the message transmitting/receiving circuit 14.

Next, FIG. 9 shows the message transmitting/receiving circuit 1 shown in FIG.
The detailed configuration around 4 is shown.

In FIG. 9, 21 is a path control circuit including a serial-to-parallel conversion circuit. 22 is a detection circuit that detects the common address of all stations; 23 is a dirt circuit;
When a common address is detected by 2, the dart is opened. 24 is an address setting circuit for setting the own station address. Reference numeral 25 denotes an address comparison circuit, which compares the own station address set in the address setting circuit 24 with the transmitted station address.

Reference numeral 26 denotes a dart circuit, and when both addresses match by the address comparison circuit 25, dart is opened. 27 is a data buffer circuit for received messages, and dirt circuit 2
3 or the received message inputted via the dart circuit 26 is stored. Reference numeral 28 denotes a y-1 circuit, through which the transmitted message stored in the transmitted message data buffer circuit 30 is output in response to a signal from the transmission command circuit 29.

31 is a status signal receiving circuit for receiving status from an adjacent station; 32 is a status signal transmitting circuit for transmitting a status signal of its own station; and 33 is a various flag control circuit including a microphone and four processors.

Next, the operation will be explained. First, when the monitoring station starts a reorganization operation due to detection of a synchronization loss, etc., it outputs a line reorganization start command to the line 1 as shown in (2) in FIG. 6 using the common address of all stations as the destination address.

Here, as shown in Figure 5, the station (STN)
If station 1.k is faulty, this command is sent to station 1.k. It reaches station j, but not station k. In addition, the station i and the station to which the above-mentioned line reorganization start command has arrived output a status response signal from the line 2 to the upstream station, respectively. This allows each station to recognize the status of stations downstream from its own station. Next, the monitoring station outputs a line reorganization termination command to the line 1 as shown in (2) in FIG. This line reorganization end command uses the common address for all stations as the destination address, similar to the line reorganization start command shown by ◯ in FIG.

When each station receives the above-mentioned common address, it either puts the line input to its own station into loopback mode or passes it downstream as is (this mode is called forward mode), based on the reception of the status signal from the downstream station. ). This determination is made by the connection determining circuit 1 shown in FIG. 8, and the switch circuit 12 changes the connection of the line, that is, whether it is in loopback mode or forward mode. Therefore, in the case of FIG. 5, station l is in the forward mode, but station j is in the loopback mode because it has not received the status response signal of signal 2, as shown in FIG. That is, the line status is determined as shown in FIG.

Next, the monitoring station outputs a line reorganization termination command to line 1 again. This line reorganization start command is transmitted at station j via line fa2 because station j is connected in the loopback mode as shown in FIG. Therefore, the line reorganization start command is first transmitted in the opposite direction from which it was output from the monitoring station, and finally transmitted to station k in the opposite direction. For example, if station l (not shown) is connected next to the station, station l will indicate the status of the station (that is, that a fault has occurred) by a status response signal from station k. I am aware of it. Next, the monitoring station once again outputs the line reorganization termination command to mno. This line re-&iI completion command is sent to the station j connected to roots pack mode.
It is transmitted via line 2. Therefore, the line reorganization start command is first transmitted in the opposite direction from which it was output from the monitoring station, and finally transmitted to station k in the opposite direction. Since station l has received a status signal from station k (that is, station k has failed), it sets the line input to its own station in loopback mode. Then, the line can be reorganized by outputting -set of commands (line reorganization start command and line reorganization end command) twice from the monitoring station.

〔Effect of the invention〕

As described in detail above, according to the present invention, in a loop data transmission device that is interposed between a plurality of r-to-transmission stations and exchanges information between various devices via the transmission paths and stations, the data transmission path is High-speed reorganization operations can be performed. Furthermore, since such a high-speed reorganization operation can be performed, the reliability of the system can be improved. In general, the system can be easily diffused for similar reasons.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a double roof 0 dataway, FIGS. 2 and 3 are diagrams each showing dataway reorganization in the event of a failure, and FIG. 4 is a diagram showing a conventional line Pj organization sequence. FIG. 5 is a diagram showing a partial configuration of a double loop dataway, FIG. 6 is a diagram showing a dataway organization sequence in an embodiment of the present invention, and FIG. 7 is a diagram showing a dataway arrangement sequence in the case of a failure in the embodiment Figure 8 is a diagram showing the configuration of each station of the double loop dataway in the same embodiment.
It is a detailed block diagram of the block diagram of FIG. 11... Connection determination circuit, 12... Switch circuit, 1
4...Message transmission/reception circuit, 22...Detection circuit,
24...Address setting circuit, 25...Address comparison circuit. 1. Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Commissioner of the Patent Office Kazuo Wakasugi Role D1. Indication of the case Japanese Patent Application No. 57-170384 2, Name of the invention Dataway Reorganization Method 3, Relationship with the Akane case of 'f city jE' Applicant Kasuta (307) Tokyo Shibaura Electric Co., Ltd. 4 Agent 5, Voluntary amendment (11'S "n'l request m January J11 is corrected as shown in the attached sheet. (2) Figure 8 of the drawing is corrected as shown in the attached sheet. 2. Information transmission in the scope of claims is made via the above transmission path. In a loop-type data transmission device that performs line reorganization, means for transmitting a line reorganization start command from the monitoring station to one of the transmission lines with a common address of all stations as the destination upon occurrence of a failure; A means for transmitting a status response signal corresponding to the general station station adjacent upstream from the general station station that has received the start instruction cooling command. When a reorganization completion command for all stations is transmitted from the monitoring station to one of the transmission lines, A means for the general station to transmit the status response signal to its own station after detecting that the status response signal is not outputted from the adjacent downstream general station, and a Tawei reorganization method. Applicant's agent Patent attorney Suzu Hiko Figure 8

Claims (1)

[Claims] In a loop-type GATA transmission device in which a plurality of data transmission stations are interposed on a double-loop data transmission path and information is exchanged between various devices via the transmission path and the stations, a transmitting unit that sends out a status signal of its own station. a receiving section that receives status signals from other stations, a connection determining section that determines the line connection status of the double loop data transmission path, and a common address detecting section that detects a common address sent from the monitoring station. , the transmitting section of each station sends the status signal of its own station to the receiving section of the adjacent station in response to line reorganization start No. 43 from the monitoring station, and the status signal sent from the adjacent station in response to the line reorganization end signal from the monitoring station. Based on the signal, the connection determining unit connects the own station to the line.