JP2000322967A - Lower device controlling system and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reliability of a switch operation without reducing processing capability of a switch control device, by performing comparison with control information of an upper device and determination by the upper device, and modifying wrong information, when control information stored in a second storing means is compared with control information stored in a first storing means, and they do not match to each other. SOLUTION: Control information of a switching operation outputted from a switch control device 10 is stored in a switching information memory (first storing means) 21 in a switch body 20 and a master memory (second storing means) 32 in a monitoring device 30, and respective informations are outputted to a reference block (reference means) 31 in the monitoring device 30 for reference. When they do not match to each other, these control informations are outputted to the switch control device 10. The switch control device 10 compares these control informations with previously outputted control information for determination. The switch control device 10 or the reference block (reference means) 31 modifies wrong stored information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower-level device including a higher-level device, a lower-level device that stores control information output from the higher-level device and operates according to the control information, and a monitoring device that monitors the operation of the lower-level device. Related to control system.

[0002]

2. Description of the Related Art Conventionally, a time division switch system includes a switch body and a switch control device for controlling the switch body. Control information output from the switch control device is stored in the switch body, and the switch body is stored. It operates based on the control information. The switch control device periodically reads out the control information stored in the switch body and checks whether it matches the previously output control information.

FIG. 2 is an internal configuration diagram of a conventional time division switch system. As shown in FIG. 2, the time division switch includes a switch control device (software) 40 and a switch body 50. The switch body 50 is a switching information memory (CONTROL MEMORY: CTL ME).
M) 51. The switch body 50 operates according to the switching operation information stored in the switching information memory 51.

[0004] Switching operation information is output from the switch control device 40 to the switch body 50, and the switching information memory 51 stores the information. Thereafter, the switch control device 40 periodically outputs a control signal to the switch body 50. This control signal is a signal for outputting the information stored in the switching information memory 51 to the switch control 40 side.

[0005] The switching information memory 51 outputs the stored information to the switch control device 40 in accordance with the control signal. The switch control device 40 inputs the information, compares the information with the previously output control information, and confirms whether or not they match. Thus, the setting status of the switching information memory indicates that the switch control device
It is regularly checked on the 0 side.

[0006]

However, in the prior art, since the setting status of the switching information memory is checked on the switch control device side, a heavy load is imposed on the switch control device side. Generally, it takes time to exchange signals between software (switch control device) and hardware (switch body). Therefore, this confirmation operation required time.
For this reason, as described above, the switch control device can perform the checking operation only periodically.

The setting status of the switching information memory can be checked in detail by increasing the number of processing steps. However, since the processing capacity of the switch control device needs to be secured while the capacity of the time division switch is increasing, it is not preferable to decrease the processing capacity of the software by increasing the number of processing steps.

Accordingly, an object of the present invention is to improve the reliability of the switch operation without lowering the processing capability of the switch control device.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a host device and first storage means for storing control information output from the host device. A second storage means for storing the control information output from the higher-level device, the control information stored in the second storage means, and the first storage. Means for inputting the control information stored in the means, and checking means for checking whether or not they match each other, wherein the checking means stores the control information in the second storage means. When the control unit and the control information stored in the first storage unit are compared with each other, and they do not match, the host device is stored in the second storage unit. Wherein it is determined whether one is the correct information between the control information stored in the control information and the first storage means as compared to the control information of the host device, to correct the mistake that information.

Further, according to the present invention, there is provided a method of controlling a lower-level device, comprising the steps of: storing control information output from a higher-level device in a lower-level device; storing the control information in a monitoring device; Collating the control information with the control information stored in the monitoring device; and, when the collation results in a mismatch, which of the control information is the correct information. And comparing the control information with the control information, and correcting an erroneous control signal in the control information.

That is, the lower-level device control system of the present invention includes a monitoring device in addition to the higher-level device and the lower-level device, and the monitoring device checks the setting status of the storage means of the lower-level device.

[0012]

FIG. 1 is an internal configuration diagram of the present embodiment. As shown in FIG. 1, the time division switch system includes a switch control device 10, a switch main body 20, and a monitoring device 30. The switch body 20 has a switching information memory (CTL MEM) 21. Further, the monitoring device 30 includes a collation block 31 and a master memory 32.

In order to confirm the setting status of the switching information memory 21, the master memory 32 must have a storage capacity larger than the storage capacity of the switching information memory 21. Each of the switch control device 10, the switch body 20, and the monitoring device 30 can be connected, for example, wirelessly to remotely control the switching operation.

The switching information memory 21 stores control information output from the switch control device 10 for controlling the switching operation. The switching information memory 21 stores the stored switching operation control information in accordance with a signal output from a control unit (not shown) provided in the switch body 20 as described later.
Is output to the collation block 31 in.

The master memory 32 stores switching control information output from the switch control device 10 and outputs the information to the collation block 31 in accordance with an instruction from the collation block 31. The collation block 31 receives the control information output from the switching information memory 21 and the control information output from the master memory 32, and collates them.

Next, the operation of the time division switch system shown in FIG. 1 will be described. When the control information of the switching operation is output from the switch control device 10 to the switch body 20, it is stored in the switching information memory 21. The control information of the switching operation is also output to the master memory 32 in the monitoring device 30.

When control information for switching operation is stored in the switching information memory 21, a control unit (not shown) in the switch body 20 outputs a predetermined signal to the switching information memory 21. Switching information memory 21
Monitors the information stored in accordance with the signal
Is output to the collation block 31 in.

The master memory 32 stores the control information of the input switching operation. Thereafter, the switching information memory 2 is stored in the verification block 31 as described above.
1 is output, the master memory 32
Outputs the control information of the switching operation to the collation block 31 in synchronization with it.

The collation block 31 outputs a read signal synchronized with the signal output from the control unit to the master memory 32, so that the switching information memory 2
1 and the control information output from the master memory are synchronized and output to the matching block 31.

The collation block 31 collates the control information output from the switching information memory 21 with the control information output from the master memory 32. This collation can be performed at any time. As a result of the comparison, if they match, the switching information memory 21 stores control information of a predetermined switching operation.

On the other hand, if they do not match, the collation block 31 sends the control information to the switch controller 10.
Output to The switch control device 10 compares the control information with the previously output control information to determine which is correct. If the control information stored in the master memory 32 is incorrect, the control information stored in the master memory 32 is corrected.

If the control information stored in the switching information memory 21 is incorrect, the control information stored in the switching information memory 21 is corrected. This correction may be performed by the verification block 31 or the switch control device 10.

In this embodiment, a case has been described in which the present invention is applied to a time-division switch having the switch control device 10 and the switching information memory 21. However, the host device and the control information output from the host device are stored. As long as it is a lower-level device control system including a lower-level device that operates according to control information, the present invention can be applied to other than the time-division switch.

[0024]

As described above, according to the present invention, the storage means for storing the control information output from the higher-level device, the control information stored in the storage means and the control information stored in the lower-level device are provided. And a checking unit for checking whether or not they match with each other. Then, as a result of comparing the control information stored in the monitoring device and the control information stored in the lower device by the comparing unit, if the control information does not match, the higher device corrects the erroneous information.

For this reason, the upper device does not periodically check whether the information stored in the lower device is correct, and the burden on the upper device is reduced. In addition, since the monitoring device (hardware) performs the operation of checking the setting status of the lower device, the checking can be continuously performed in a short time. Therefore, confirmation of control information and early recovery of erroneous information become possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a switch control system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a conventional switch control system.

[Explanation of symbols]

10, 40 Switch control device 20, 50 Switch body 21, 51 Switching information memory (first storage means) 30 Monitoring device 31 Verification block (verification means) 32 Master memory (second storage means)

Claims (5)

[Claims] 1. A lower-level device control system comprising: a higher-level device; and a lower-level device having first storage means for storing control information output from the higher-level device and operating according to the control information. Second storage means for storing the control information to be performed, and the control information stored in the second storage means and the control information stored in the first storage means, A monitoring device having matching means for checking whether or not they match; wherein the matching means stores the control means and the first storage means stored in the second storage means. As a result of comparing the control information with the control information, if the two do not match, the higher-level device stores the control information stored in the second storage means and the control information stored in the first storage means. A lower-level device control system, which determines which of the control information is correct information by comparing the control information with the control information of the higher-level device, and corrects erroneous information. 2. The lower-level device control system according to claim 1, wherein said second storage means has a storage capacity equal to or greater than the storage capacity of said first storage means. 3. The lower-level device control system according to claim 1, wherein the higher-level device is a switching control circuit, and the lower-level device is a switch body. 4. The lower-level device control system according to claim 1, wherein the higher-level device, the lower-level device, and the monitoring device are wirelessly connected. 5. A step of storing control information output from a higher-level device in a lower-level device, a step of storing the control information in a monitoring device, and storing the control information stored in the lower-level device and the monitoring device. Collating the control information with the control information, and when the collation results do not match, determining which of the control information is correct information by comparing the control information with the control information of the host device. And a step of correcting an erroneous control signal in the control information.