JPH02299350A - Monitor system for inside of equipment - Google Patents

Abstract

PURPOSE:To detect a connection fault correctly by sending a recognition signal from an extension section in response to the extension position and allowing a monitor means to process the fault detection based on the recognition signal. CONSTITUTION:A channel signal transmission section 5 in an extension section 2 generates a channel signal and sends the signal to a channel signal path A. When the extension section 2 connects to a prescribed extension position, a recognition signal generating section 6 identifies the connected position and generates an identification signal and sends it to the path A. On the other hand, a common section 1 receives the channel signal and the recognition signal added thereto and a channel signal processing section 3 extracts the channel signal to apply the selection processing of the channel based on the channel signal. Moreover, a monitor section 4 extracts the identification signal to process the fault detection. Thus, when the extension section 2 is extended, whether or not the section 2 is extended at a correct position is discriminated automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a monitoring method for a digital signal transmission device, and more particularly to an internal monitoring method for detecting failures in each unit constituting the device.

[Prior Art] A conventional internal monitoring method for a digital signal transmission device is to add a predetermined check signal that is the same to all units to the channel signal transmitted between each unit that makes up the device. The unit to which the channel signal is transmitted receives the channel signal and detects a check signal from the channel signal to detect a fault. When the failure detection of this unit is completed, the failure detection of the next unit is carried out in the same way.In this way, failure detection of each unit is performed sequentially, and as a result, all failures within the device are detected. ing.

[Problems to be Solved by the Invention] The conventional internal device monitoring method described above can detect failures within each unit after each unit is connected to the correct position. If the extension unit is connected to a different position from the original position after the extension unit has been connected, that is, if the extension unit is not connected to the correct position, this connection failure cannot be detected correctly.

[Means for Solving the Problems] In order to solve the above problems, the in-device monitoring system according to the present invention uses a communication path signal that is located in an extension unit and generates a communication path signal and sends it to the communication path signal path. a transmission means, a recognition signal generation means located in the extension unit for generating a recognition signal corresponding to the extension position at which the extension unit is installed and sending it to the above-mentioned communication path signal path; a communication path signal processing means for receiving and processing a communication path signal on the signal path; and a communication path signal processing means located in a common unit that receives a recognition signal on the communication path signal path and detects a fault in the device based on the recognition signal. The device is equipped with internal monitoring means for performing the following steps.

[Operation] The channel signal transmitting means generates a channel signal and sends it to the channel signal path. Further, the identification signal generating means in the expansion unit generates a recognition signal corresponding to the expansion position of this unit and sends it to the communication channel signal path. On the other hand, the communication path signal processing means in the common unit receives the communication path signal arriving from the communication path signal path and processes the communication path signal, and the internal monitoring means receives the recognition signal and processes the communication path signal. Detects equipment failures.

[Embodiment] The figure is a block diagram showing an embodiment of the in-device monitoring system of the present invention. This in-device monitoring method is applied to a digital signal transmission device (not shown). In the figure, 1 is the common part, 2 is the extension part, and 3 is the common part 1.
a communication path signal processing section that processes communication path signals;
Reference numeral 4 denotes an in-device monitoring unit which is also located in the common unit 1 and detects failures in the equipment; 5 is a communication path signal transmitting unit which is located in the extension unit 2 and transmits communication path signals etc. to the common unit 1; and 6 is the same. A recognition signal generating section is located in the extension section 2 and generates a recognition signal according to the position where the extension unit is connected.A is a communication path signal path through which the communication path signal and the recognition signal are transmitted.

The operation of the in-device monitoring system configured as described above will be explained.

A channel signal transmitter 5 in the extension section 2 generates a channel signal for selecting a channel according to a call from a terminal device (not shown) housed in the digital signal transmission device, and selects a channel signal path. Send to A. Furthermore, when the extension unit 2 is connected to a predetermined extension position, the recognition signal generating unit 6 in the extension unit 2 identifies this connected position, generates a recognition signal, and sends it to the communication channel signal path A. do.

On the other hand, the common section 1 receives the communication path signal coming from the communication path signal path A and the recognition signal added thereto. Then, the communication path signal processing section 3 in the common section 1 extracts the communication path signal from the received signal and performs a communication path selection process based on this communication path signal. Further, the in-device monitoring unit 4 in the common unit 1 extracts a recognition signal from the received signal and performs failure detection processing. This failure detection process is a process of determining whether the operating state within the device is correct or not based on the correctness or failure of the recognition signal, and when this process is performed,
When the extension part 2 is added, it is automatically determined whether it is added to the correct position.

When the failure detection process for the extension unit 2 is performed in this manner, the next expansion unit 2 is selected and the same failure detection process as described above is performed.

In this way, all the failures within the device can be detected by sequentially selecting the expansion units 2 and performing the failure detection process.

[Effects of the Invention] As is clear from the above explanation, according to the in-device monitoring system according to the present invention, the extension unit transmits the communication path signal and the recognition signal according to the extension position of the extension unit through the communication path signal path. The internal monitoring means in the common unit receives this recognition signal and performs fault detection processing based on this recognition signal, so that the extension unit is not connected to the original position. This has the effect of correctly detecting a connection failure even if the connection is made at a different location.

[Brief explanation of drawings]

The figure is a block diagram showing an embodiment of the in-device monitoring method according to the present invention. DESCRIPTION OF SYMBOLS 1...Common part, 2...Additional part, 3...Call path signal processing unit, 4...Device internal monitoring unit, 5...Call path signal transmitting unit, 6... ...Recognition signal generation section, A...
・Call signal path.

Claims (1)

[Claims] An in-device monitoring method for detecting a fault in the device based on a communication path signal transmitted between a common section and a plurality of extension sections provided in a digital signal transmission device via a communication path signal path. A communication path signal transmitter, which is located within the extension section and generates the communication path signal and sends it to the communication path signal path; and a recognition signal which is located within the extension section and corresponds to the extension position where the extension section is installed. recognition signal generating means for generating a signal and transmitting it to the communication path signal path; and communication path signal processing means, located in the common section, for receiving the communication path signal on the communication path signal path and processing the communication path signal. An in-device monitoring system comprising: an in-device monitoring means located in the common section that receives a recognition signal on the communication channel signal path and detects a failure in the device based on the recognition signal.