JPS60134641A - System for preventing output of erroneous data - Google Patents

Abstract

PURPOSE:To prevent output of unestablished erroneous data by transferring information data of an information route of normal other series to an information route of one abnormality series for a prescribed time based on a control program of an information exchange device at transmission side when the transmission of information data is intermitted temporarily and restored. CONSTITUTION:The transmission side information exchange 31 transmits an information data to a reception side information exchange 2. A state supervisory section 32 supervises the state of A system information route and a B system information route and if an abnormality takes place, the abnormality signal of the information route is transmitted to an information processing control section 33. The information processing control section 33 detects the type of abnormality state signal based on the abnormality signal from the state supervisory section 32, reads the corresponding control program from a control memory section 34 so as to execute the control by a control program. Interface sections 35, 36 transfers and releases the information data of an A system transmission/reception section 9 and a B system transmission/reception circuit section 13 respectively to an inter-system link circuit 37 by the backup indication of the information processing control section 33. An inter-system link circuit 37 outputs the transferred information data respectively to the A system transmission/reception section 3 or the B system transmission/reception section 6.

Description

DETAILED DESCRIPTION OF THE INVENTION tal Technical Field of the Invention The present invention relates to a dual-base half-duplex data transmission information exchange system that transmits the same information data using two-channel transmission routes between information exchange devices. This invention relates to a method for preventing erroneous data output at the time of startup due to recovery of an abnormal information route.

(bl Background of the Technology) Conventionally, data transmission paths between information exchange devices in data transmission information exchange systems have been carried out using general public communication lines or specific dedicated communication lines such as power transmission lines. There is.

Data is transmitted between these information exchange devices from the data transmitter of the sender's information exchange device that transmits the information data to the data receiver of the receiver's information exchange device that receives the information via the data transmission path. Then, response data such as an acknowledgment is sent back from the data transmitting unit of the receiving side information exchange device to the data receiving unit of the transmitting side information exchange device via the data transmission path. In order to enable the flow of information data and response data to be sent and received in both directions using a single channel data transmission path,
The bidirectional half-duplex data transmission information exchange system gives each transmitting and receiving information exchange device the responsibility and right to establish a data link. Below are the information data and V to be sent.
#Response data such as acknowledgments are collectively referred to simply as data. Furthermore, in systems that transmit important data in this half-duplex data transmission information exchange method, in order to avoid situations in which data collection is not possible due to failures in the data transmission path or information exchange equipment, the data transmission path that transmits the data is Two channels are provided, and each of the two channels is equipped with a two-line transmission/reception system that transmits and receives data independently, and the same data is transmitted through the information routes of these two lines to improve the reliability of data information collection and exchange. What improved the system was a half-duplex data transmission information exchange system with two arrays.

IcI Prior Art and Problems A conventional dual-base, half-duplex data transmission information exchange system of this type will be described below.

Fig. 1 shows a configuration diagram of a conventional data transmission information exchange system with a half-duplex image in which two units are arranged in parallel. The receiving side information exchange device is shown. From the A-light data transmitting section 3a of the A-thread transmitting and receiving section 3 of the transmitting side information exchange device 1,
Data is transmitted to the receiving side information exchange device 2 via the first channel 4 of the data transmission path. The transmitted data is received by the A-light data receiver 5a of the A-thread transmitter/receiver 5 of the receiving side information exchange device 2, and is received by the A-light data receiver 5b of the A-thread transmitter/receiver 5.
data such as confirmation responses via the first channel 4,
The A-thread information route in the half-duplex image is returned to the A-thread data receiving section 3b of the A-thread transmitting/receiving section 3 of the sending side information exchange device 1. Similarly to the A yarn information route, the B optical data transmitter 6a of the B yarn transmitter/receiver 6 transmits the B optical data receiver 8 of the B yarn transmitter/receiver 8 via the second channel 7 of the transmission route.
The B yarn information route is for transmitting data to the B yarn data transmitting section 8b and returning response data to the B optical data receiving section 6b of the B yarn transmitting/receiving section 6 via the second channel 7. Through these two routes, the A thread information route and the B thread information route, the same information data is transmitted from the sending side information exchange device 1 to the receiving side information exchange device 2, resulting in a half-duplex data transmission information exchange system with two bases. .

FIG. 2 shows a circuit configuration block diagram of a conventional half-duplex data transmission information exchange system with two arrays.

Identical objects are designated by the same reference numerals throughout the figures. The data in the data transmission of the half-duplex image with two bases is as follows:
There is information data to be transmitted and response data to be acknowledged, and the information data will be explained below based on the flow of data transmitted in the downstream direction. The A thread information route receives information data from an upper information exchange device (not shown) in the A thread transmitting/receiving section 9 of the sending side information exchange device 1, and transmits the received information data to the A thread via the interface section 10. The yarn transmitter/receiver 3 outputs the signal to the A yarn transmitter/receiver 5 of the receiving side information exchange device 2 via the first channel 4 . The information data received by the A yarn transmitting/receiving section 5 of the receiving side information exchange device 2 is transmitted via the interface section 11 to the information exchange device (
(not shown).

In addition, the B yarn information route transmits information data from the information exchange device in the upper direction to the B yarn transmitting/receiving unit 1 of the transmitting side information exchange device 1.
3, and the received information data is sent to the interface unit 1.
4 from the B yarn transmitting/receiving section 6.

It is output to the B yarn transmitting/receiving section 8 of the receiving side information exchange device 2 via the second channel 7. The information data received by the B yarn transmitting/receiving section 8 of the receiving side information exchange device 2 is as follows.

The data is output from the B yarn transmitting/receiving section 16 via the interface section 15 to the information exchange device in the lower direction. The transmitting side information exchange device 1 has an information processing control section 17 that controls the A yarn information route and the B yarn information route, and a control program for the information processing control section 17 is stored in the control memory section 18. It also has a status monitoring section 19 that monitors the status of the A yarn information route and the B yarn information route.

A state monitoring signal from the state monitoring section 19 is sent to the information processing control section 17. The receiving side information exchange device 2 also includes an information processing control section 20, a control memory section 21, and a state monitoring section 22 that perform the same functions. Furthermore, the receiving side information exchange device 2
In this case, the information data of the A yarn information route is sent from the interface section 11 to the B yarn transmitting/receiving section 16.

Alternatively, it has an inter-series link circuit 23 for transferring the information data of the B yarn information route from the interface section 15 to the A yarn transmitting/receiving section 12, so that when an abnormality occurs in one of the information routes and the information data is not received, bank amplifier circuit,
The status monitoring unit 22 sends a status monitoring abnormality signal to the information processing control unit 20, and the information processing control unit 20 sends the status monitoring abnormality signal to the control memory unit 21.
Transfer processing is controlled by the inter-series link control program.

In Figure 2, if some fault occurs, 3
For example, if a failure occurs in the B yarn transmitting/receiving section 6 or the second channel 7, the B yarn information route becomes unusable, and the information data is no longer transmitted to the B yarn transmitting/receiving section 8 of the receiving side information exchange device 2. Then, the status monitoring unit 19 of the transmitting side information exchange device 1 detects the abnormal state of the B yarn information route and sends a B yarn information route abnormality signal to the information processing control unit 17, and the transmitting side information exchange device N1 detects the abnormal state of the B yarn information route. Recognize abnormalities in the thread information route. Further, the status monitoring unit 22 of the receiving side information exchange device 2 detects an abnormal state of the B yarn information route, and sends a B yarn information route abnormality signal to the information processing control unit 20.

In this case, the A yarn information route is normal, so one series of information data is transferred from the sending side information exchange device 1 to the receiving side information exchange device 2.
transmitted to. Therefore, even if one series becomes unusable, there is no problem in collecting information data. However, only one series of information data will be transmitted to the system after the information exchange system where the abnormal condition occurred, and there is no point in creating two systems. The processing control unit 20 uses the inter-series link control program in the control memory unit 21 to
1 through the inter-series link circuit 23 to the B yarn transmitter/receiver 16.
The information data is sent out to back up the unusable B thread information route. Therefore, two rows of information data are output from the A yarn transmitting/receiving section 12 and the B yarn transmitting/receiving section 16 after the receiving side information exchange device 2. If the receiving side information exchange device 2 is a terminal device, the A yarn transmitting/receiving section 12 or the B yarn transmitting/receiving section 16
It is sufficient to collect any information data. Next, when the B thread information route where the abnormality occurred is restored, the state monitoring section 22 detects the state and sends a B thread information route return signal to the information processing control section 20. The recovery control program in the control memory unit 21 opens the inter-series link circuit 23 and cancels the backup.

This returns to the normal two-base information data transmission using the A thread information route and the B thread information route. As described above, inter-series data transfer between the A yarn information route and the B yarn information route is not performed by the transmitting side information exchange device 1, but is performed on the receiving side of the receiving side information exchange device 2.

In the conventional double-stranded, half-duplex data transmission information exchange system described above, one series of information route that has become abnormal is backed up by another series of information routes, and when the abnormal information route returns, it is immediately backed up. is released, and the information route of the one series that was abnormal starts receiving regular information data, and the information data is transmitted to the subsequent information exchange device, but the faulty part of the abnormal information route is restored and restored. At this point, there is a start-up period until the normal data is completely collected, and since the backup is canceled ignoring this start-up period, erroneous data that has not been established during the start-up period is output, and this incorrect data causes subsequent failures. It had the disadvantage of interfering with information data processing.

(dl) Purpose of the Invention The present invention aims to solve the conventional drawback that the information route where the abnormality has occurred is restored and erroneous data is output during the start-up period, which hinders information processing.

+1ll) Structure of the Invention The above object is to provide a dual-base half-duplex data transmission information exchange system in which the same information data is transmitted from an information exchange device on a transmitting side to an information exchange device on a receiving side using a two-channel transmission route. , a state monitoring circuit that monitors the state of the information route of the two groups, an inter-series transfer means that mutually transfers information data between the two groups, and a state monitoring signal from the condition monitoring circuit, A transmitting side information exchange device comprising a control program for controlling inter-series transfer of the inter-sequence transfer means for a certain period of time, wherein information of one series is When data transmission is temporarily interrupted and starts up upon recovery, the control program of the information exchange device controls the inter-series transfer of the inter-series transfer means for a certain period of time based on the status monitoring signal of the status monitoring circuit; This is achieved by the present invention, which is configured to transfer the information data of the other one series of information routes among the two series of information routes to the one series of information route that is abnormal.

That is, in a half-duplex data transmission information exchange system with two arrays, the transmission of information data is temporarily interrupted due to an abnormality in one of the information routes of the two arrays, and when the information data transmission resumes and resumes, the transmission side Based on the status monitoring signal of the status monitoring circuit, the control program of the information exchange device controls the inter-series transfer of the inter-series transfer means for a certain period of time, and transfers the information data of the normal information route of one series to the abnormal one. By configuring the system so that stable information data is output from the transmitting side information exchange device on the transmitting side, the faulty part of the information route that was abnormal can be restored and restarted, and normal data can be restored. For a certain period of time until the information is completely assembled, the information data from the other normal information route will be used as a bank amplifier, and the output of unestablished erroneous data will be prevented.

The present invention provides a method for preventing erroneous data output that does not interfere with subsequent information data processing.

(f) Example of the Invention An example of the present invention will be described below. FIG. 3 shows a block diagram of the structure of a dual-parallel, half-duplex data transmission and information exchange system according to the present invention.

The receiving side information exchange device 2 has the same configuration as the conventional one.

The internal configuration is omitted. 31 is a transmitting side information exchange device.

32 is a status monitoring unit, 33 is an information processing control unit, 34 is a control memory unit, 35 is an interface unit for the A yarn information route,
Reference numeral 36 indicates an interface section for the B yarn information route, and reference numeral 37 indicates an inter-series link circuit.

The transmitting side information exchange device 31 transmits information data to the receiving side information exchange device 2. The status monitoring unit 32 monitors the status of the A yarn information route and the B yarn information route, and if an abnormality occurs in the status of either information route.

An abnormality signal of the information route is sent to the information processing control section 33. The information processing control section 33 detects which abnormal state signal is the abnormal state signal from the abnormal signal from the state monitoring section 32.

The corresponding control program is read from the control memory unit 34 and control based on the control program is executed.

In addition to the conventional control program, the control memory section 34 stores:
A control program that instructs a backup request and instructs to release the hackup after a certain period of time is stored. In response to a backup instruction from the information processing control section 33, the interface section 35 transfers the information data of the A yarn transmission/reception section 9 to the inter-series link circuit 37 and releases it.

The interface unit 36 transfers the information data of the B yarn transmitting/receiving unit 13 to the inter-series link circuit 37 and cancels the transfer according to the back amplifier instruction from the information processing control unit 33. The inter-series link circuit 37 is connected to the interface section 35 or the interface section 3.
Information data transferred from 6.

They are output to the A yarn transmitting/receiving section 3 or the B yarn transmitting/receiving section 6, respectively.

2 The transmission and reception of data between the transmitting side information exchange device 1 and the receiving side information exchange device 2 in FIG. 3 is the same as that described above, and therefore will not be described here. The backup function of the transmitting side information exchange device 1 when an abnormality occurs in either the A yarn information route or the B yarn information route will be described below. In FIG. 3, if, for example, the B yarn information route becomes unavailable due to some kind of failure, as described above, the status monitoring unit 32 of the transmitting side information exchange device 31 An abnormality in the B yarn information route is detected, and a B yarn information route abnormality signal is sent to the information processing control section 33. The receiving side information exchange device 2 sends information data to the B yarn transmitting/receiving section 16 through the inter-series link, and
Banking up the yarn information route is the same as described above. Next, when the abnormal B yarn information route is restored, the status monitoring section 32 detects the restored state and sends a B yarn information route return signal to the information processing control section 33. Detecting the B yarn information route return signal,
The B yarn information route return control program in the control memory section 34 instructs the interface section 35 to request backup of the information data of the A yarn information route, and the interface section 35 saves the information data of the A yarn information route from the A yarn transmitting/receiving section 9. is transferred to the inter-series link circuit 37. The inter-series link circuit 37 outputs the transferred information data of the A yarn information route to the B yarn transmitting/receiving section 6. After a certain period of time, the information processing control section 33 instructs the interface section 35 to cancel the backup, and stops the information data of the A yarn information route from the A yarn transmitting/receiving section 9 that was being transferred from the interface section 35 to the inter-series link circuit 37. , cancel the bank amplifier.

Thereafter, the process returns to the normal two-base transmission of information data using the A thread information route and the B thread information route.

FIG. 4 shows A by the data transmission information exchange system of the present invention.
A time chart diagram of information data of the sending side information exchange device system of the yarn information route and the B yarn information route is shown. The horizontal axis is the time axis, (A system) shows the state of the A thread information route, (B system) shows the state of the B thread information route, and (A route) shows the flow of information data of the A thread information route. , (B route) indicates the flow of information data of the B thread information route. If the B thread information route fails at three points in (B system), the information data of (B route) will stop, and the information data will be transferred to the receiving side information exchange system as described above. . (B series)
At time b, the B yarn information route returns and starts up, instructs the A system to request a bank amplifier, and starts backup from the A system at time C. Therefore, the C' point pull-up information data of (B route) is output to the B thread information route.

At time d of (B system), the data of the B yarn information route is completely complete and the bank amplifier is instructed to be released, and at time e of (A system), bank up is canceled, and from time e'' of (B route), it is normal. Information data is output from the B thread information route.The period from time C to time e of this (A system) is the back amplifier period, and from time C° to time b' of (B route) is output from the A thread information route. This is the backup information data of I think you can understand that it is data. By configuring the circuit 5 of the present invention, an erroneous data output prevention method can be achieved that can completely prevent erroneous data that has not yet been established at the rise time from time b" to time d".

(g) As described in the detailed description of the invention, in a half-duplex data transmission information exchange system with two arrays, due to an abnormality in one of the information routes of the two arrays.

When the transmission of information data is temporarily interrupted and then resumed, the control program of the information exchange device on the transmitting side uses the control program of the information exchange device on the transmitting side to detect abnormal information data of another series of information route based on the status monitoring signal of the status monitoring circuit. By adopting the circuit configuration of the present invention that transfers data to a series of information routes for a certain period of time, it is possible to reduce the period of time required until the functions of the abnormal information route are activated and the normal data is completely collected. time limit.

Since back-amplification is performed using the information data of another normal information route on the transmitting side, the output of unestablished erroneous data is prevented and there is an effect that the subsequent information data processing is not hindered.

[Brief explanation of drawings]

6. Fig. 1 is a block diagram of a conventional dual-parallel data transmission information exchange system, Fig. 2 is a circuit diagram of a conventional dual-parallel data transmission information exchange system, and Fig. 3 is a circuit diagram according to the present invention. FIG. 4 is a circuit configuration block diagram of a data transmission information exchange system with two bases, and a time chart diagram of information data of the transmitting side information exchange system according to the present invention. In the drawing, 2 is a receiving side information exchange device, 3 and 9 are A thread transmitting and receiving sections, 4 is a first channel, 6 and 13 are B thread transmitting and receiving sections, 7 is a second channel, 31 is a transmitting side information exchange device,
32 is a status monitoring unit, 33 is an information processing control unit, 34 is a control memory unit, 35 is an interface unit for the A yarn information route,
Reference numeral 36 indicates an interface section for the B yarn information route, and reference numeral 37 indicates an inter-series link circuit. Bud 3 Brothel 4 En-TJ+Threshold

Claims (1)

[Claims] In a half-duplex data transmission information exchange system with two channels in which the same information data is transmitted from an information exchange device on a transmitting side to an information exchange device on a receiving side using two channel transmission routes, the information routes of the two channels are a state monitoring circuit that monitors the state, an inter-series transfer means that mutually transfers information data between the two series, and an inter-series transfer of the inter-series transfer means based on a state monitoring signal from the state monitoring circuit. The transmission side information exchange device is equipped with a control program that controls the data for a certain period of time, and the transmission of information data of one series is temporarily interrupted due to an abnormality in one of the two series of information routes, and the transmission of one series of information data is temporarily interrupted and cannot be resumed. At the time of start-up, the control program of the information exchange device controls the inter-series transfer of the inter-series transfer means for a certain period of time based on the status monitoring signal of the status monitoring circuit. A method for preventing erroneous data output, characterized in that the information data of one series of information route is transferred to the one series of information route that is abnormal.