JPH07250129A - Transmission system - Google Patents

Abstract

PURPOSE:To obtain a transmission system which can restore a communication line in a short period of time. CONSTITUTION:A common memory 43 (MEM) is used for data transfer between a monitor control means 52 and between input ports 23 (IP) and output ports 23 (OP) of respective transmission control means 10A (MD) and the address (AD) allocation of the MEM is made to correspond to the AD allocation of the respective IP and OP, and writing operation is performed with ADs corresponding to the OPs and reading operation is performed with ADs corresponding to the IPs. Then the OPs output monitor information (AM) with their corresponding ADs and the IPs input mode setting information (ST) and set corresponding modes. The allocated ADs of the IPs and OPS of the respective MDs are generated by an address generating means 42 repeatedly in order and supplied to the respective MDs and MEM and the AMs of the respective MDs are gathered in the MEM, and the ST set in the MEM is passed to the respective MDs to set the modes. The monitor control means checks the AMs in the MEM to detect abnormality, stores a disconnection ST to be passed to the IP of the corresponding MD in the IP corresponding AD location of the MD in the MEM when the abnormality is detected, and stores an in-use mode ST to be passed to the IP of a substitute MD selected among stand-by MDs in the IP corresponding AD location of the MD in the MEM.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for constructing an alarm monitoring and switching control unit of a transmission device for transmitting data.

[0002]

2. Description of the Related Art A transmission device for transmitting data has a transmission line connected to each transmission device module 10 as shown in FIG. Transmission data is transmitted and received via the transmission device module 10 operating as a line, and at that time, the state of the transmission line such as noise or line disconnection is monitored, and when trouble occurs, it stands by as a standby line. The line is switched to the middle transmission device module so that normal data transmission can be performed. The transmission line monitoring for each transmission device module 10 is performed by providing a microprocessor 20 for each transmission device module 10 and executing a monitoring program by this microprocessor 20.

In the configuration shown in FIG. 7, each microprocessor 20 is provided to one central supervisory control unit 50 via an in-car communication signal line 30. In the central supervisory control unit 50, each of these microprocessors 20 is provided. The output information is received via the collection processing / concentration unit 40, and each transmission device module 10 is instructed to set the main line / spare line,
As a result, which transmission device module is made to function as the main line and which transmission device module is set as the standby line in the standby state is managed.

As another example, as shown in FIG.
The transmission device for transmitting data is the transmission device module 10
A plurality of I / O units are provided for each, and transmission lines are connected to each of them. Part of the I / O unit operates as a main line and the other operates as a backup line. The transmission / reception is performed, but at that time, the state of the transmission line such as noise or line disconnection is monitored, and when trouble occurs, the backup line I is connected.
The line is switched to the / O section so that normal data transmission can be performed. Then, each transmission device module 10
The monitoring of each transmission path is performed by providing a microprocessor 21 for each of the transmission device modules 10 and executing a monitoring program by the microprocessor 21.

In the configuration shown in FIG. 8, each microprocessor 21 in each transmission device module 10 gives status information such as an alarm collected by itself to one central supervisory control section 50 through the in-line signal line 30. . The central supervisory control unit 50 receives the information output from each of the microprocessors 21 via the collection processing / concentration unit 40, and a plurality of I / Os in each transmission device module 10 are received.
Which I / O unit operates as the main line and which I / O unit
/ O section is used as a standby line to set standby, etc., and each microprocessor 21 in each transmission device module 10 receives this via the in-vehicle communication signal line 30,
According to the instruction content, which I / O unit is operated as a main line and which I / O unit is made to stand by as a standby line is set and operated, and transmission control is managed.

[0006]

As described above, in the conventional transmission apparatus, as shown in FIG. 8, the microprocessor 20 is provided for each transmission apparatus module 10 for performing data transmission control.
The microprocessor 20 collects and processes alarm states in the transmission state of the own transmission device module 10 and supplies them to the supervisory control central processing unit 50 via the in-device wiring or the inter-wiring 30. The supervisory control central processing unit 50 collects information by the collection / concentration unit 40 and manages which is operated as a main line and which is a standby line as a standby line. In this way, one monitoring control central processing unit 50 performs alarm monitoring / switching control of each transmission device module 10.

In such a conventional transmission apparatus, when a plurality of sets of transmission apparatus modules 10 are used, an alarm of these transmission apparatus transmission modules is given to one central supervisory control unit 50 to monitor the entire transmission apparatus. Since the configuration is such that control is performed, the load of the supervisory control central processing unit 50 can be distributed to the microprocessor 20 or the microprocessor 21 in each transmission device module 10 to reduce the load. It is necessary to exchange information between modules, for example, each transmission device module, via the collection processing / concentration unit 40, and the load on the collection processing / concentration unit 40 is heavy. In addition, after collecting data from each transmission device module 10 in the supervisory control central processing unit 50 and performing a predetermined process, the data is redistributed and distributed again to the microprocessor 20 or 21 of each transmission device module. A procedure for performing processing for each transmission device module is required, and the microprocessor 20 or 21 in the device, the collection processing / concentration unit 4
There is a drawback in that the load of data transfer processing of 0 cannot be reduced.

Therefore, there is a danger that the control for switching the abnormality occurrence line discovered by the most important alarm monitoring to the protection line will be delayed due to the heavy load of the data transfer process. If the switching of the line where an error occurs to the standby line is delayed, it means that the recovery of the communication line that was transmitting due to the abnormal line will be delayed accordingly, which hinders normal operation of data transmission. , Reduce the reliability of communication.

Therefore, an object of the present invention is to reduce the load of the data transfer processing in the device of the supervisory control central processing unit so that the line in which the abnormality occurs can be immediately switched to the normal backup line. An object of the present invention is to provide a transmission system equipped with an in-apparatus monitoring control device that enables restoration of a communication line in a short time.

[0010]

In order to achieve the above object, the present invention is configured as follows. That is, the transmission control is controlled by individually managing a plurality of sets of transmission paths, and the transmission control is stopped when the mode is set to the standby mode and the transmission control is stopped when the mode is set to the standby mode. Transmission control means having a function of generating control information and generating a monitor information for notifying when an abnormality is detected by monitoring the transmission state and collecting the monitor information from these transmission control means It consists of an in-apparatus supervisory control means for monitoring an abnormality, disconnecting the transmission control means having the abnormality when the abnormality is detected, and controlling the transmission control means set as a spare so as to be used as an alternative. In the transmission system, firstly, each transmission control means is provided with an input port and an output port, a unique address for selecting these input and output ports is allocated, and the output port When the selected address is received, the monitoring information is sent to the in-apparatus monitoring control means, and when the selected address of the input port is received, the function to take in the mode setting information from the in-apparatus monitoring control means is added. The internal monitoring control means includes address generating means for sequentially and repeatedly generating assigned addresses of input ports and output ports of each transmission control means, first transmission means for giving the generated addresses to each transmission control means, and each transmission control. The address allocation corresponding to the allocation address of the input port and output port of the means is made,
When an address corresponding to the assigned address of the input port of each transmission control means is generated, information is written to that address position, and when an address corresponding to the assigned address of the output port of each transmission control means is generated. A data transfer memory for reading the information at the address position, a second transfer means for sending the read information from the data transfer memory to each transmission control means, and a monitoring information read from the data transfer memory for each transmission control means. While monitoring the abnormality, when the abnormality is detected, write the mode setting information to set the disconnection from the active in the address position of the data transfer memory that corresponds to the assigned address of the input port of the transmission control means where the abnormality is detected. , The address of the data transfer memory corresponding to the allocation address of the input port of the backup transmission control means Position To configured by including a monitoring control means for controlling to write the mode setting information of the working.

Secondly, each transmission control means is provided with an input port and an output port, a unique address for selecting these input and output ports is allocated, and when the selected address of the output port is received, monitoring is performed. The information is sent to the in-apparatus monitoring control means, and when the selected address of the input port is received, the function is added to take in the mode setting information from the in-apparatus monitoring control means. Address generation means for sequentially and repeatedly generating assigned addresses of input ports and output ports of the control means,
The first transmission means for giving this generation address to each transmission control means and the address allocation corresponding to the allocation address of the input port and the output port of each transmission control means are made and correspond to the allocation address of the input port of each transmission control means. When the address to be generated is generated, the information is written to the address position, and when the address corresponding to the allocation address of the output port of each transmission control means is generated, the data transfer memory for reading the information at the address position is provided. ,
The second transmission means for sending the read information from the data transfer memory to each transmission control means is compared with the old information when updating the monitoring information in the data transfer memory, and an interrupt request signal is generated at a different time. And the interrupt control means that performs an interrupt request, reads the monitoring information from the data transfer memory, investigates whether there is an abnormality in each transmission control means, and responds to the assigned address of the input port of the transmission control means where the abnormality is detected. To write the mode setting information for setting the disconnection from the active mode to the address position of the data transfer memory, and to write the active mode setting information to the address position of the data transfer memory corresponding to the allocation address of the input port of the spare transmission control means. And a monitoring control means for controlling.

[0012]

In the system of the present invention, a common data transfer memory is used for data transfer between the in-device monitoring control means and the input / output ports (I / O section) provided in each transmission control means (transmission device module etc.). The address allocation of this memory, which is readable / writable from the in-device monitoring control means and each transmission control means side, corresponds to the address allocation of each input / output port described above, and the write operation is performed at the address corresponding to the output port address. Then, the read operation is performed at the address corresponding to the address of the input port, and when the corresponding address is given to each input / output port, the monitor information is output for the output port, and the mode setting information is output for the input port. The import and the setting of the mode were done.

Then, the address generating means of the in-apparatus monitoring control means sequentially and repeatedly generates the allocation addresses of the input port and the output port of each transmission control means, and gives this generated address to each transmission control means and the data transfer memory. Selects the input port and output port of each transmission control means, collects the monitoring information of each transmission control means in the data transfer memory, and also sets the mode setting information set in the data transfer memory to each transmission control means. Passed and set to that mode.

The supervisory control means examines the supervisory information collected in the data transfer memory to monitor the abnormality, and if the abnormality is found, the disconnection mode setting information to be delivered to the input port of the corresponding transmission control means is data. This transmission control means is stored in the address position corresponding to the input port of the transmission control means in the transfer memory, and the transmission control means to be used as a substitute for this abnormal transmission control means is selected from the spare transmission control means. The working mode setting information to be delivered to the input port of the transmission control means is stored in the address position corresponding to the input port of the transmission control means in the data transfer memory.

Therefore, the data transfer memory, which is a shared memory in which the sending and receiving of the monitoring information and the sending and receiving of the mode setting command are assigned to the addresses corresponding to the input / output ports of each transmission control means, the information is sent to the corresponding address position. Is controlled by writing and reading the data, thereby eliminating the burden of information transmission processing between the monitor control means side and each transmission control means, and using it in the form of access to the data exchange memory. CP that takes time because I did it
It becomes possible to avoid communication processing for U and high-speed processing of memory access, so it is possible to disconnect the working line in which an error has occurred and transfer it to the backup line at high speed. , It will be possible to quickly recover the line where the error occurred.

Further, in the case of the second configuration, the interrupt control means is provided so that the old and new information is compared when the monitoring information in the data transfer memory is updated, and the interrupt request signal is generated at a different time. When this interrupt request occurs, the monitor control means reads the monitor information in the data transfer memory, investigates whether there is an abnormality in each transmission control means, and responds to the assigned address of the input port of the transmission control means where the abnormality is detected. Write the mode setting information for setting the disconnection from the current to the address position of the data transfer memory, and write the current mode setting information to the address position of the data transfer memory corresponding to the allocation address of the input port of the spare transmission control means. The monitoring control means examines the monitoring information collected in the data transfer memory and determines the difference. The monitoring was to release the burden that must be performed regularly. Therefore, it is possible to further reduce the burden on the monitoring control means as compared with the first configuration.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is an overall configuration diagram showing a first embodiment of the present invention. In FIG. 1, 10A is a transmission device module, and this transmission device module 10A
Is provided with a plurality of I / O units 23. Reference numeral 60 denotes a receiver / driver provided in the transmission device module 10A for data transmission / reception, and each I / O unit 23 has a data transfer bus 24 provided in the transmission device module 10A.
It is connected to this receiver / driver 60 via. The transmission device module 10A is connected to one independent central processing unit 51.

The central processing unit 51 is for each transmission device module 1
0A is received to monitor the abnormality of each I / O unit 23 of each transmission device module 10A, the I / O unit 23 in which the abnormality has occurred is disconnected, and instead, it is in a standby state as a standby line. It has a supervisory control function of giving a mode setting command to the corresponding I / O unit in order to switch to the normal I / O unit 23.

Each I / O unit 23 is connected to a transmission line, and when set in the working mode, for example,
It can be used for data transmission with a relay device for data transmission or a transmission terminal connected via a transmission line.

Each I / O unit 23 is assigned a different specific address, and the mode is set by giving a command by designating the assigned address or by giving each specific address. Is set to perform the command fetching operation and the abnormality detection information output operation, and the mode setting command can cause the I / O unit to perform the transmission operation for the current use or the standby state for the standby.

In addition, while the I / O units 23 are in active input / output operation, the state of data transmission is monitored and an alarm is issued when the line is disconnected or the reliability of the transmission line decreases. It has a monitoring function that is issued and generates abnormality detection information (abnormality detection flag). For the abnormality detection information by the abnormality monitoring function, an address assigned to the I / O unit is designated to give an abnormality monitoring information read command, or
By giving a specific address for reading assigned to the I / O unit, the address / data transfer bus 3 from the receiver / driver 60 via the data transfer bus 24.
The information transferred to 1 can be received.

A monitoring control data transfer unit 41 is provided in the central processing unit 51, and the transmission device module 10 is provided.
A is connected to the supervisory control data transfer unit 41 via the address / data transfer bus 31 from the receiver / driver 60 in the transmission device module 10A, so that the transmission device module 10A and the central processing unit 51 can monitor supervisory control data. I am able to give and receive. The supervisory control data transfer unit 41 has a two-port type memory, that is, two read / write input / output ports.
A dual port memory with ports is used for data transfer.

In the system of the present invention, a 2-port (dual port) data transfer memory (however, the central processing unit 51 is used for data transfer between the central processing unit 51 and the I / O unit 23 provided in the transmission device module 10A. Side memory and the address / data transfer bus 31 side can be read / write exclusively from both directions. The memory 43 does not have to be a two-port memory, but the central processing unit 51 and the address / data transfer bus 31 are used. By using the monitor control data transfer unit 41 using this memory that can be read / written from both directions, the burden of collecting and checking the monitor information is not imposed on the main processor.

That is, in the system of the present invention, the central processing unit 51 is provided with one CPU 52 for monitoring control.
The CPU 52 is not burdened with the process of collecting monitoring information from each I / O.

The central processing unit 51 monitors information from each I / O in each transmission device module 10A and command information (mode setting command) for I / O switching (that is, switching between the working line and the protection line). ) Is transmitted and received via the address / data transfer bus 31, and the supervisory control data transfer unit 41 transfers the monitor information, command information, and address data to and from the address / data transfer bus 31 by a bus driver 44, A bus driver / receiver 45 is provided, and is composed of an address generator 42 that cyclically generates address data and the 2-port data transfer memory 43.

The monitoring information from each I / O unit 23 cyclically generates address data designating the address assigned to each I / O unit 23 by the address generation unit 42, and is sequentially designated by this. The monitoring information is obtained from each I / O unit 23, and the monitoring information is received from each I / O unit 23 by receiving it via the bus driver / receiver 45 and writing it in the data transfer memory 43 of the two ports. The CPU 52 of the central processing unit 51 is not required to collect data, and the data transfer can be completed by memory access, so that no special processing for data transfer is required.

A driver / receiver 60 is provided in each transmission device module 10A, and a data transfer bus 2 in the module.
4 are provided, and each I / O that is an input / output port (terminal)
The unit 23 is connected to the driver / receiver 60 via the data transfer bus 24.

The driver / receiver 60 includes a receiver 61 for controlling reception of transmission data and a data transfer bus driver / receiver 6 for performing bus control for transmission / reception of transmission data.
2 is provided, and the receiver 61 receives the address data sent from the address generation unit 42 via the bus driver 44 of the central processing unit 51, and the transmission device module 10A
By giving each I / O unit 23 in the internal I / O unit 23, the I / O unit 23 whose allocation address matches the address data at that time can be designated, and the monitoring information from the designated I / O unit 23 is transferred to the data transfer bus driver. By writing the data in the 2-port data transfer memory 43 via the / receivers 62 and 45, the CPU 52 of the central processing unit 51 acquires the monitoring information without directly accessing the I / O unit 23. The monitoring information of each I / O unit 23 can be updated and registered in the data transfer memory 43.
The monitoring information is collected from the CPU 3, and the CPU 52 of the central processing unit 51 is prevented from collecting the monitoring information.

Here, the data transfer memory 43 has the same I / O.
The sending and receiving addresses are made to correspond to the O section, and the monitoring information can be sent and received by giving the receiving address and the mode setting command by giving the sending address. I am doing it.

The 2-port data transfer memory 43 is addressed by the address data from the address generator 42, and the monitoring information from the I / O unit 23 is written to the address specified by the address data. Further, the CPU 52 of the central processing unit 51 can fetch the monitoring information into the CPU 52 by designating and reading the address of the data transfer memory 43.

By periodically fetching the contents of the data transfer memory 43 to the CPU 52 and checking the monitoring information, the I / O unit in charge of the line in which the transmission line has an abnormality is placed in another standby line. It controls the I / O unit in charge of the line switching and executes the line switching. Switching the I / O section
It is executed by designating the address for transmission to the corresponding I / O unit of the data transfer memory 43, outputting the command data for specifying the working / spare mode together with the write command, and writing it in the data transfer memory 43. However, the data transfer memory 43 may use the addresses assigned to the access of the input port and the output port of each I / O unit.
Is also commonly assigned as the address of the I / O unit, and if the address is an access address of the output port of the I / O unit, the data given from the I / O unit is written to the corresponding address position of the data transfer memory 43, and the I / O unit is written. If it is the access address of the input port of the I / O unit, the contents of the corresponding address position of the data transfer memory 43 are read out and given to the I / O unit. A configuration can be adopted in which port access and data input / output of the data transfer memory 43 are performed simultaneously.

Next, the operation of the present apparatus having such a configuration will be described. The address generating unit 42 cyclically generates the address data assigned to each I / O unit 23. Then, this address data is given to the data transfer memory 43 and the bus driver 44. The bus driver 44 sends this address data to the data bus of the address / data transfer bus 31, and each transmission device module 10A receives it via the receiver 61.

Then, the receiver 61 gives this to each I / O unit 23 in the own transmission device module 10A. Each I /
The O unit 23 decodes each of them and activates itself when the address is assigned to itself. In the case of this device, for example, two addresses are assigned to each I / O unit 23, In the case of one of the above addresses, the monitoring information is transmitted by setting one to access the output port (transmission of monitoring information) and the other to access the input port (reception of the mode setting command from the central processing unit 51). Then, the current monitoring information in the own I / O unit 23 is sent to the bus driver / receiver 62.

The bus driver / receiver 62 sends this monitoring information to the data bus of the address / data transfer bus 31. In the central processing unit 51, the bus driver / receiver 45
This monitoring information is received via the and is written in the data transfer memory 43 of the above two ports.

The data transfer memory 43 is provided with the generated address data from the address generation unit 42, and since this is an address for reception, the received monitoring information is written at this address position. As a result, the monitoring information of the I / O unit corresponding to the generated address from the address generation unit 42 is written in the reception address position corresponding to the I / O unit in the data transfer memory 43.

In this manner, the I / O unit allocation addresses are cyclically generated from the address generation unit 42, and the data transfer memory 43 receives the I / O units at the reception address position corresponding to each I / O unit. Since the monitoring information is written, the monitoring information of each I / O unit is transferred to the data transfer memory 4
3 can be collected.

On the other hand, the CPU 52 of the central processing unit 51 periodically fetches the contents of the data transfer memory 43 and checks the monitoring information. As a result, the I / O unit in charge of the line in which the transmission path has an abnormality is known. Then, an address corresponding to the I / O unit in charge of the line in which the transmission line has an abnormality is generated and given to the data transfer memory 43, and the data of the disconnection mode setting command is output to the address position. Write control. Also, the I / O unit in charge of the other waiting line is checked and selected, and the address corresponding to the address position for transmission corresponding to the selected I / O unit is generated and given to the data transfer memory 43. Moreover, the data of the setting command of the working mode is output and the writing control is performed at the address position.

The generated address data from the address generation unit 42 is given to the data transfer memory 43. Since this address changes cyclically, when it becomes an address for accessing an input port of a certain I / O unit. In addition, the information of the mode setting instruction stored in the address of the address of the data transfer memory 43 accessed for reading is the data transfer memory 4
3 is read from the bus driver / receiver 42, 62
Is sent to the I / O unit corresponding to the address via the I / O unit, and the I / O unit fetches and sets the I / O unit,
The O section is switched from the one in which the transmission is abnormal to the one in the standby state and is used for the transmission work.

In this way, the monitoring information of the I / O unit corresponding to the address cyclically generated from the address generation unit 42 is transferred to the I / O unit in the data transfer memory 43.
Sequentially written to the reception address corresponding to the I / O unit, and the central processing unit 51 checks this and if there is an abnormality, writes the disconnection mode setting command to the transmission address corresponding to the corresponding I / O unit, By disconnecting from the current by passing it to the I / O unit, and by writing the current mode setting command to the transmission address corresponding to the standby mode I / O unit in the data transfer memory 43 and passing it to the corresponding I / O unit, The monitoring of the I / O units can be directly performed by the CPU of the central processing unit 51 because the monitoring and the automatic switching to the protection line when an abnormality is detected can be completed simply by accessing the memory. Not only does the burden of collecting information be eliminated, but each I / O in the central processing unit 51
The burden of special transmission processing for transmitting monitoring information and commands to the O unit 23 and the burden of special transmission processing on the side of each I / O unit 23 can be eliminated.

Here, an example of allocation of the data transfer memory 43 will be briefly described. Of the respective I / O units 23, in order to specify the I / O unit 23 that is the target for reading the monitoring information (alarm signal), the I / O unit 23 is used for output ports for transmission and for reception. When the address for the input port is assigned, and the address for the output port is given from the address generator 42, the current monitoring information of itself is sent, but the data transfer memory 43 sends the sent monitoring information. Monitoring information write position for each I / O unit for writing information (address position for reception for each I / O unit) and each I / O for writing a mode setting command given to each I / O unit 23 It is divided into copy mode setting command writing positions (address positions for transmission of each I / O unit).

The allocation address at each position is associated with the output port address and the input port address of each I / O section 23. That is, each I / O unit 2
It matches the assigned address of the I / O port of 3.

In the case of the device of the present invention configured as shown in FIGS. 1 and 2, the data transfer memory 43 uses a dual port memory, and the two ports for access are separately assigned addresses. You can Therefore, one port is configured to access the transmission / reception of data with each transmission device module 10A by the generated address from the address generation unit 42, and the other port is in a memory space managed by the CPU 52 of the central processing unit 51. By allocating, this dual port memory can be used by allocating to two kinds of memory space separately, and physical allocation on the dual port memory of each I / O part from any memory space. If the positions are the same, it is possible to transfer information via this dual port memory, so that the same address as the allocation address of each I / O unit can be used in one of the dual port memories. Allocate to the accessible memory space of the port and make it common with the selected address of each I / O unit.
Information is collected by using one of the ports of the dual port memory, and by assigning an address assigned to each I / O unit and an address generation unit that is repeatedly generated in order. The other port is allocated to the accessible memory space of the CPU 52 of the central processing unit 51 and is monitored by the monitoring program of the CPU 52, and the switching of the I / O unit corresponds to the corresponding I / O unit of the dual port memory. Since the command is delivered by using the address, the CPU 5 of the central processing unit 51
2 without having to directly monitor the I / O unit
The I / O unit can be monitored.

Since the data transfer memory 43 has two ports and can be accessed by allocating different address spaces to each other, the address allocation seen from one port is, for example, the I / O section which is an input / output port. The address of the other port is assigned to the memory space of the CPU 52. If this assignment is assigned to the address map as shown in FIG. Addresses are assigned so as to be from "0000" to "0FFF" in the space, and the address from the CPU 52 of the central processing unit 51 is "0000" in the memory space of the CPU 52.
It means that it is assigned to "2FFF".

Therefore, the memory 43 of the supervisory control data transfer unit 41 converts the generated address from the address generation unit 42 through the address conversion table so that the address of the memory 43 seen from the central processing unit 51 is "0000". "~ 2FFF", the addresses of the memory 43 are "0000" to "0" from the I / O unit 23 side (transmission device module 10A side).
It looks like it's assigned to FFF ".

Here, when viewed from the I / O unit 23 side, the input ports of each I / O unit 23 have "0000" ...
By assigning different ones of “0FFF” and assigning different ones of the remaining ones to the output ports of each I / O unit 23, the address position is input to each I / O unit 23. Each I / O unit 2 can be associated with access to the output port, and by cyclically repeating the addresses "0000" to "0FFF".
The access to the I / O port 3 and the transfer of the transfer data corresponding thereto via the data transfer memory 43 can be performed by a simple repetitive operation.

CPU 20 or CPU shown in the conventional example
The CPU 21 is mainly responsible for data transfer in the device and detection of alarm generation of the transmission module. Then, it is necessary to immediately detect the occurrence of the alarm, and it is necessary to urgently control the automatic preliminary switching.

In this system, the addresses viewed from each I / O unit are the addresses assigned to these I / O units, and the addresses viewed from the CPU of the central processing unit 51 correspond to the memory space of the CPU. The dual port memory is used, and the access of each I / O unit is used to access from one port of this dual port memory.
The other port is accessed at the address viewed from the CPU of the central processing unit 51, and this dual port memory is used as a shared memory to exchange monitoring information and monitor.
The shared memory is used to send and receive the command for setting the mode, and the CPU of the central processing unit 51 and each I / O unit are accessed by using the shared memory access. As a result, it becomes possible to avoid the time-consuming communication processing for the CPU, and the memory access processing can be performed at high speed. Therefore, it is necessary to disconnect the working line in which an error has occurred and transfer it to the backup line. It becomes possible to carry out at high speed, and it becomes possible to carry out the restoration of the line where the abnormality has occurred at high speed.

Next, another example for further reducing the load on the CPU 52 will be described as a second embodiment. (Second Embodiment) The example shown in FIG. 4 has a configuration in which a calculation unit 46, a buffer 47, a buffer 48, and an interrupt generation unit 49 are added to the configuration example of FIG.

The buffer 47 is for temporarily holding the data transmitted from the transmission device module side via the bus driver / receiver 44, and the buffer 48.
Is for temporarily holding the data that has been accessed and read from the data transfer memory 43.
6 is a circuit for obtaining the difference between the data from these two buffers 47 and 48, and the interrupt generation section 49 is a calculation section 4
This is a device for generating an interrupt vector to the CPU 52 when the operation result of 6 is not "0". The output of the calculation unit 46 other than "0" is given to the CPU 52 as an interrupt signal, and the interrupt vector output from the interrupt generation unit 49 is a vector for issuing a high-priority interrupt to the CPU 52.

In this embodiment, when this interrupt is input to the CPU 51, the data transfer memory 43 is searched to check at which address the abnormality occurrence monitoring information is written, and the information is written. To know which I / O unit is in charge of the line from the existing address, disconnect this I / O unit, and move the line to the I / O unit of another normal spare line that replaces it. The line switching mode setting command is given through the data transfer memory 43. In this embodiment, the CPU 52 does not have a routine for successively monitoring the contents of the data transfer memory 43 for abnormality monitoring.
An error occurs in 52 only when an interrupt occurs.
The load of the sequential monitoring is eliminated by the processing for knowing which one of the / O units is by checking the contents of the data transfer memory 43.

The other points are almost the same as those in the first embodiment, and the central processing unit 51 controls each I in each transmission device module 10A.
Connected by an address / data transfer bus 31 in order to exchange monitoring information from the I / O and command information (mode setting command) for I / O switching (that is, switching between the working line and the protection line). The monitoring control data transfer unit 41 is provided with a bus driver 44 and a bus driver / receiver 45 for transferring monitoring information, command information, and address data to the address / data transfer bus 31, and cyclically transfers address data. Address generating unit 42 to be generated and the above 2
Port data transfer memory 43 (However, similar to the above, as long as it is a memory that can be exclusively read / written from both the central processing unit 51 side and the address / data transfer bus 31 side, it does not have to be a 2-port memory. ) And the monitoring information from each I / O unit 23 cyclically generate address data designating an address assigned to each I / O unit 23 by the address generation unit 42, thereby sequentially The monitoring information is obtained from each designated I / O unit 23, received via the bus driver / receiver 45, and written into the 2-port data transfer memory 43.

A driver / receiver 60 is provided in each transmission device module 10A, and a data transfer bus 2 in the module.
4 are provided, and each I / O that is an input / output port (terminal)
The unit 23 is connected to the driver / receiver 60 via the data transfer bus 24.

The driver / receiver 60 includes a receiver 61 for controlling reception of transmission data and a data transfer bus driver / receiver 6 for performing bus control for transmission / reception of transmission data.
2 is provided, and the receiver 61 receives the address data sent from the address generation unit 42 via the bus driver 44 of the central processing unit 51, and the transmission device module 10A
By giving each I / O unit 23 in the internal I / O unit 23, the I / O unit 23 whose allocation address matches the address data at that time can be designated, and the monitoring information from the designated I / O unit 23 is transferred to the data transfer bus driver. / Writes to the 2-port data transfer memory 43 via the receivers 62 and 45.

Here, the data transfer memory 43 has the same I / O.
Addresses for transmission and reception are made to correspond to the section O. The addresses for reception are used for monitoring information, and the addresses for transmission are used for mode setting commands.

The 2-port data transfer memory 43 is addressed by the address data from the address generator 42, and the monitor information from the I / O unit 23 is written to the address specified by the address data. Further, in the central processing unit 51, the CPU 52 can fetch the monitoring information into the CPU 52 by designating and reading the address of the data transfer memory 43.

The CPU 52 sequentially fetches the contents of the data transfer memory 43 upon occurrence of the interrupt and checks the monitoring information to determine which I / O is in charge of which line.
Knowing whether or not the O section is abnormal, switch the I / O section in charge of the line in which the transmission path has an error to the I / O section in charge of another standby line, and perform control to switch the line. Take charge. The switching of the I / O unit is performed by designating the address corresponding to the transmission to the corresponding I / O unit of the memory 43 for exchanging data.
A configuration may be adopted in which the command data for specifying the spare mode is output together with the write command and is written in the data transfer memory 43, but the input port and the output port of each I / O unit are respectively accessed. The assigned address is also commonly assigned as the address of the data transfer memory 43, and if it is an access address of the output port of the I / O unit, it is given to the corresponding address position of the data transfer memory 43 from the I / O unit. The data to be written, I
If the address is an access address of the input port of the I / O unit, the contents of the corresponding address position of the data transfer memory 43 are read and given to the I / O unit, so that the input of each I / O unit can be performed by the address. The configuration can be such that access to the ports and output ports and data input / output of the data transfer memory 43 are simultaneously performed.

Next, the operation of the present apparatus having such a configuration will be described. The address generating unit 42 cyclically generates the address data assigned to each I / O unit 23. Then, this address data is given to the data transfer memory 43 and the bus driver 44. The bus driver 44 sends this address data to the data bus of the address / data transfer bus 31, and each transmission device module 10A receives it via the receiver 61.

Then, the receiver 61 gives this to each I / O unit 23 in the own transmission device module 10A. Each I /
The O unit 23 decodes each of them and activates itself when the address is assigned to itself. In the case of this device, for example, two addresses are assigned to each I / O unit 23, In the case of one of the above addresses, the monitoring information is transmitted by setting one to access the output port (transmission of monitoring information) and the other to access the input port (reception of the mode setting command from the central processing unit 51). Then, the current monitoring information in the own I / O unit 23 is sent to the bus driver / receiver 62.

The bus driver / receiver 62 sends this monitoring information to the data bus of the address / data transfer bus 31. In the central processing unit 51, the bus driver / receiver 45
This monitoring information is received via the and is written in the data transfer memory 43 of the above two ports.

In the data transfer memory 43, the generated address data from the address generation unit 42 is given, and since this is the address of the writing area, the received monitoring information is written in this address position. As a result, the monitoring information of the I / O unit corresponding to the generated address from the address generation unit 42 is transferred to the I / O unit in the data transfer memory 43.
It is written in the receiving address position corresponding to the / O section.

By cyclically generating each I / O section allocation address from the address generating section 42 in this manner, the received monitoring information is written to the address corresponding to each I / O section in the data transfer memory 43. And each I
The monitoring information of the / O unit can be collected in the data transfer memory 43.

On the other hand, the present embodiment has a configuration in which a calculation unit 46, a buffer 47, a buffer 48, and an interrupt generation unit 49 are newly added. Among them, the buffer 47 is a transmission device module via the bus driver / receiver 44. The data transmitted from the side is temporarily retained, and the buffer 48 temporarily retains the content of the generated address read from the address generator 42. In this embodiment, the address generator 4
When the data transfer memory 43 is accessed by the generated address from 2 to write the monitoring information from the I / O unit, the contents written in the address to be accessed are read prior to this, and then the I / O unit is read. Control is performed so that the monitoring information from the / O unit is written.

As a result, the data read from the data transfer memory 43 by the read access is temporarily held in the buffer 48, and the arithmetic unit 46 is then operated.
By calculating the difference between the contents of both buffers 47 and 48, it is possible to compare the contents of the monitoring information of the previous time and this time. If the difference is not "0", it means that the state has changed. It can be recognized that an abnormality has occurred.

Then, the interrupt generating section 49 is operated by the calculating section 46.
When the result of the operation is not "0", an interrupt vector is generated in the CPU 52. Further, the output of the arithmetic unit 46 other than "0" is provided to the CPU 52 as an interrupt signal, whereby the interrupt of the interrupt vector output from the interrupt generation unit 49 is applied to the CPU 52. This interrupt has a high priority, and the CPU 52 knows which I / O unit has the abnormality by checking the contents of the data transfer memory 43.

Then, an address (data transfer memory 43
The transmission mode address corresponding to the corresponding I / O section in the above) writes a disconnection mode setting command to disconnect from the current mode, and instead, the current mode setting command to the address corresponding to the standby mode I / O section in the data transfer memory 43. And write it to the corresponding I / O unit.

That is, when an interrupt is generated due to the occurrence of an abnormality, the CPU 52 of the central processing unit 51 fetches the contents of the data transfer memory 43 and checks the monitoring information.
As a result, the I / O in charge of the line in which the transmission path has failed
Get to know the division. Then, an address for transmission corresponding to the I / O unit in charge of the line in which the transmission path is abnormal is generated and given to the data transfer memory 43, and the data for the standby mode setting command is output. Write control to address. Also, the I / O unit in charge of the other waiting line is checked and selected, and the address corresponding to the address position for transmission corresponding to the selected I / O unit is generated and given to the data transfer memory 43. Moreover, the data of the setting command of the current mode is output and the writing control is performed at the address.

The generated address data from the address generator 42 is given to the data transfer memory 43, and this address changes cyclically. Therefore, when the address becomes a transmission address, the data transfer memory 43 concerned. The information of the mode setting command which is accessed for reading and stored in the address position is sent to the I / O unit corresponding to the address via the bus drivers / receivers 42 and 62. When the I / O unit is loaded and set, the I / O unit is switched from the one in which the transmission is abnormal to the one for standby and is used for the transmission.

In this way, the monitoring information from each I / O unit is sequentially fetched for reception in the data transfer memory 43, and the monitoring information is changed by the arithmetic means for comparing the old and new monitoring information of the monitoring information. The presence or absence of an abnormality is monitored to check if there is an abnormality.
An interrupt request to the CPU 52 to cause the CPU 52 to check the contents of the data transfer memory 43, and for the transmission / reception for the I / O unit corresponding to the address in the data transfer memory 43 where the monitoring information indicating the abnormality is written. The disconnection mode setting command is written to the corresponding address to disconnect from the current one, and instead, the current mode setting command is written to the transmission address corresponding to the standby mode I / O unit in the data transfer memory 43 to the corresponding I / O unit. By passing the data, the monitoring and the mode switching can be performed by simply accessing the memory. Therefore, the CPU of the central processing unit 51 can directly collect the monitoring information of each I / O unit and the monitoring information. Not only does the processing load for the periodical check not be applied, but the central processing unit 51 also monitors each I / O unit 23. The burden of special transmission processing for transmitting visual information and commands, and the burden of special transmission processing on the side of each I / O unit 23 can be eliminated. That is, as compared with the case of transmitting monitoring information by communication transmission processing as in the past, input / output, transfer, and
The load of the data transfer processing in the device, which is the processing of concentrating, is greatly reduced.

Further, in the second embodiment, as for the alarm monitoring information, the latest information and the previous value (or the value before last) are set.
And (in the embodiment, a difference is taken, but it may be a match / mismatch by comparison), and a change in the alarm state is detected by this, and the CPU 52 is requested to perform interrupt processing. When an alarm occurs, the alarm can be immediately checked when the information is received, so that the alarm can be processed urgently as compared with the first embodiment in which the alarm is regularly checked.

As described above, in this embodiment, the CPU 5
When this interrupt is input to 1, the data transfer memory 43
To check which address the monitoring information of the error occurrence is written, and from the address where the information is written, know which I / O unit is in charge of the error and In order to disconnect the I / O part and move the line to the I / O part of another normal spare line that replaces it,
Memory 4 for data transfer of line switching mode setting commands
It is configured to be given through 3.

In this embodiment, the CPU 52 does not have a routine for successively monitoring the contents of the data transfer memory 43 for abnormality monitoring.
Is configured to perform processing such that the contents of the data transfer memory 43 are checked to find out which I / O unit has an abnormality only when an interrupt is applied, thereby eliminating the burden of sequential monitoring. .

The present invention is not limited to the embodiments described above and shown in the drawings, and can be carried out by appropriately modifying without departing from the scope of the invention. For example, data collection and comparison are possible. In addition to the counter configuration, can be implemented by a dedicated microcontroller.

Further, when the monitoring information of each I / O unit is cyclically collected, it is the simplest hardware configuration to change the address in order, but it has flexibility. If it is necessary to use the structure shown in FIG. The configuration of FIG. 5 uses a memory TM that stores an address translation table, and this address translation table memory TM is provided in the subsequent stage of the address generator 42, and the address translation table memory TM is C
The PU 52 allows rewriting control of the contents of the address conversion table.

In this way, the address information generated by the address generator 42 is given to the address conversion table memory TM, where it is converted into a predetermined address corresponding to the input address information by the address conversion table in the memory TM. Is output.

The contents of the address conversion table in the address conversion table memory TM can be freely changed by rewriting control from the CPU 52. Therefore, by setting the contents of the address conversion table in the memory TM to the desired contents, the address generation is performed. If the output of the section 42 is decoded by the address conversion table memory TM, it is possible to freely change the order and cycle of the generation addresses of the address generation section 42.

As a result, the I / O in charge of the backup transmission line
It becomes possible to exclude the monitoring of the I / O unit which is in charge of the transmission line and which has been set / disconnected, and to increase the execution ratio of the monitoring of those with a high degree of wiredness. Therefore, efficient or rational monitoring control can be performed.

In each of the above embodiments, the address / data transfer bus 31 for connecting the respective transmission device modules and the central processing unit is configured to use the parallel bus. It is also possible to use a serial line for transmission. An example thereof is shown in FIG. FIG. 6 shows data / address lines connected in parallel-series in order to reduce the number of signal lines in the overhead wiring, such as the address / data transfer bus 31 connecting between the transmission device modules 10A and the central processing unit 51. This is an example of parallel conversion. Address buses A0 and A1 in parallel bus format on the transmission side
, A2, A3 are converted into serial data for the transmission path and transmitted by the serial transmission line, and are converted again into parallel data on the receiving side to be parallel bus type address buses A0, A1, A2, A3. Return to the data for.

[0078]

As described above in detail, according to the present invention,
The central processing unit (CPU) is used to configure the configuration of the alarm monitoring control unit of the transmission device that is composed of multiple parts such as modules and subrack
From the view point, it can be placed in the address space of the memory, so automatic switching from alarm detection to the backup system, etc.
Unlike the conventional case, the supervisory control over a plurality of modules can be performed only by the memory access capable of high-speed operation without the time-consuming communication processing between CPUs. Therefore, the high-speed control can be performed. The automatic recovery time can be shortened.

Further, conventionally, the CPU is provided for each module and subrack, so that the number of CPUs increases and the number of parts such as memory and I / O increases.
Although there is a problem that the software for control becomes large, in the present invention, the cost can be reduced because it can be implemented by one CPU provided in the central control unit.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an embodiment of the present invention,
The system block diagram which shows the example of the whole structure of this invention.

FIG. 2 is a diagram for explaining an embodiment of the present invention,
The block diagram which shows the principal part structure of 1st Example of this invention.

FIG. 3 is a diagram for explaining an embodiment of the present invention,
The figure which shows the address allocation example of the memory for data transfer used by the system of this invention.

FIG. 4 is a diagram for explaining an embodiment of the present invention,
The block diagram which shows the principal part structure of 2nd Example of this invention.

FIG. 5 is a block diagram for explaining another embodiment of the present invention.

FIG. 6 is a block diagram for explaining another embodiment of the present invention.

FIG. 7 is a diagram for explaining a conventional example.

FIG. 8 is a diagram for explaining a conventional example.

[Explanation of symbols]

 10A ... Transmission device module 23 ... I / O section 24 ... Data transfer bus 31 ... Address / data transfer bus 41 ... Monitoring control data transfer section 42 ... Address generation section 43 ... Data transfer memory 44 ... Bus driver 45 ... Bus driver / Receiver 46 ... Operation unit 47, 48 ... Buffer 49 ... Interrupt generation unit 51 ... Central processing unit 52 ... CPU 60 ... Receiver / driver 61 ... Receiver 62 ... Data transfer bus driver / receiver TM ... Address conversion table memory.

Claims (3)

[Claims] 1. A plurality of sets of transmission lines are individually managed to control transmission, and the mode is set for working / standby. When set for standby, the transmission control is stopped and set for working. In this case, the transmission control is performed, and when the abnormality is detected by monitoring the transmission state, the transmission control means having the function of generating the monitoring information for notifying the abnormality and the monitoring information from these transmission control means are generated. Collect and monitor for anomalies,
When an abnormality is detected, the transmission control means having the abnormality is disconnected, and the transmission control means for controlling the transmission control means set as the spare to be used as an alternative to the current transmission control means, in the transmission system, The transmission control means is provided with an input port and an output port, assigned unique addresses for selecting these input and output ports, and when receiving the selected address of the output port, sends monitoring information to the in-device monitoring control means, When it receives the selected address of the input port, it is configured by adding the function to take in the mode setting information from the in-apparatus monitoring control means, and the in-apparatus monitoring control means is assigned with the assigned address of the input port and output port of each transmission control means. Address generating means for sequentially repeating the above, first transmitting means for giving the generated address to each transmission control means, and When address allocation corresponding to the allocation address of the input port and output port of the transmission control means is made, and when the address corresponding to the allocation address of the input port of each transmission control means is generated, information is written to that address position, When an address corresponding to the assigned address of the output port of each transmission control means is generated, a data transfer memory for reading the information of the address position, and a read information from the data transfer memory for sending to each transmission control means. The monitoring information is read from the second transmission means and the data transfer memory to monitor the abnormality of each transmission control means, and when the abnormality is detected, it corresponds to the assigned address of the input port of the transmission control means where the abnormality is detected. Write the mode setting information to set the disconnection from the current one at the address position of the data transfer memory. And a supervisory control means for controlling to write the current mode setting information to the address position of the data transfer memory corresponding to the allocation address of the input port of the spare transmission control means. Transmission system. 2. A plurality of sets of transmission lines are individually managed to control transmission, and a mode setting for working / standby is used to stop transmission control when set for stand-by and set for working. In this case, the transmission control is performed, and when the abnormality is detected by monitoring the transmission state, the transmission control means having the function of generating the monitoring information for notifying the abnormality and the monitoring information from these transmission control means are generated. Collect and monitor for anomalies,
When an abnormality is detected, the transmission control means having the abnormality is disconnected, and the transmission control means for controlling the transmission control means set as the spare to be used as an alternative to the current transmission control means, in the transmission system, The transmission control means is provided with an input port and an output port, assigned unique addresses for selecting these input and output ports, and when receiving the selected address of the output port, sends monitoring information to the in-device monitoring control means, When it receives the selected address of the input port, it is configured by adding the function to take in the mode setting information from the in-apparatus monitoring control means, and the in-apparatus monitoring control means is assigned with the assigned address of the input port and output port of each transmission control means. Address generating means for sequentially repeating the above, first transmitting means for giving the generated address to each transmission control means, and When address allocation corresponding to the allocation address of the input port and output port of the transmission control means is made, and when the address corresponding to the allocation address of the input port of each transmission control means is generated, information is written to that address position, When an address corresponding to the assigned address of the output port of each transmission control means is generated, a data transfer memory for reading the information of the address position, and a read information from the data transfer memory for sending to each transmission control means. No. 2 transmission means, interrupt control means for comparing old and new information when updating monitoring information in the data transfer memory, and generating an interrupt request signal at different times, and monitoring information in the data transfer memory when an interrupt request occurs. To check whether there are any abnormalities in each transmission control means, and detect the abnormal transmissions. The mode setting information for setting disconnection from the current is written in the address position of the data transfer memory corresponding to the allocation address of the input port of the control means, and the data transfer memory of the data transfer memory corresponding to the allocation address of the input port of the spare transmission control means is written. A transmission system comprising: a supervisory control means for controlling to write the current mode setting information to an address position. 3. The transmission system according to claim 1, wherein the data transfer memory is configured by using a dual port memory.