JPH03283860A - Method and device for collecting intermittent state information for telecommunication line - Google Patents

Abstract

PURPOSE:To store the information of a time and a line state successively by a detecting the state of the voltage and that of the current of a telecommunication line, storing them in a memory part after converting to digital information, and comparing the detected digital data of the state of the voltage and that of the current with contents in the memory part detected previously. CONSTITUTION:A detecting part 10 detects the voltage applied to the telecommunication line 500, and sends the state of the line to an analog/digital conversion part 30, and a detecting part 20 sends the detected state of the current to an analog/digital conversion part 40. A CPU part 50 for control recognizes and confirms the digital information of the state of the voltage and that of the current obtained from the analog/digital conversion parts 30, 40, and sends them to the memory part 60. Also, the CPU part 50 for control receives the information detected successively, and compares it with the content stored in the memory part 60 received previously, and no information is written on the memory part 60 if it is changed within a specific range, and the information is written newly on the memory part 60 if change outside the specific range occurs. Thereby, it is possible to always monitor an electrical state applied to the telecommunication line.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to monitoring the condition of occasional disconnection faults in specific telecommunication lines, such as public telephone lines and private lines, and is necessary for identifying and confirming the fault condition. The present invention relates to a method and apparatus for collecting such information.

[Conventional technology]

BACKGROUND OF THE INVENTION Conventionally, in telecommunication lines such as public telephone lines and private telephone lines, so-called occasional disconnections have occurred where the voltage or current changes, such as temporary attenuation of voltage or temporary attenuation of current.

These occasional disconnections are caused by the current decaying because the telecommunications line is about to break due to a drop in tension, or because the connections are touching or breaking apart, causing the voltage to drop.

This occurs due to changes in current, etc.

Therefore, in the past, in order to identify and confirm disconnection failures, DC voltage and current were applied to the telecommunication line from time to time, and the voltage and current of the telecommunication line were temporarily measured using a measuring device such as a tester.

However, such temporary measurements cannot identify and confirm fault conditions, such as when a portion of a telecommunications line is temporarily disconnected, causing an arc, and then restored and connected. There wasn't.

As mentioned above, in the conventional identification and confirmation of occasional disconnection failures in telecommunications lines, sufficient and clear results could not be obtained because the lines were only monitored and tested on a temporary basis. It is necessary to monitor the condition and perform tests. However, in reality, it has been virtually difficult to perform long-term monitoring and testing through manual work.

[Problem to be solved by the invention]

The present invention has been made in view of the above circumstances, and it is possible to monitor and test disconnection failures for a long time, constantly monitor the status, and occasionally analyze the cause of disconnection failures by collecting time and line status information. It is an object of the present invention to provide a method and apparatus for collecting occasional disconnection status information for telecommunication lines that is continuously stored.

[Means and actions to solve the problem]

In order to achieve the above object, the present invention includes a detection unit that detects the voltage and current of a monitored telecommunications line, an analog/digital conversion unit that converts information obtained from the detection unit into a digital signal, and a A control CPU (Central Processing CPU) that performs control and operates information obtained from the analog/digital converter.
an operation switch section for operating the control CPU section, an I10 (input/output) section for coupling the control CPU section and the operation switch section, and the control C
A memory section for storing information obtained from the analog/digital conversion section via the PU section and the control CPU door are housed in the same housing. In addition, the control CPU section has a control program for controlling it, and externally includes a display section that graphs and outputs information obtained from the memory section via the control CPU section; The apparatus includes a recorder section that graphs and outputs the information obtained from the memory section via a digital/analog conversion section.

〔Example〕

FIG. 1 is a block diagram showing one embodiment of the present invention.

In this figure, reference numeral 10 denotes a detection section, which detects the voltage applied to the telecommunication line 500 and sends the state of the detected voltage to the analog/digital conversion section 30. 20 is also a detection unit,
The current flowing through the telecommunications line 500 is detected, and the state of the detected current is sent to the analog/digital converter 40. Reference numeral 30 denotes an analog/digital conversion section, which converts the voltage state information obtained from the detection section 10 into digital information and sends it to the control CPU section 50. 40 information and sends it to the control CPU section 50.

Reference numeral 50 denotes a control CPU section, which operates a control switch (SW) section 90 under the processing process dedicated to the present invention of the control software section 51.
The analog/digital converter 30 and the analog/digital converter 40
Recognizes and confirms the digital information on the voltage status and current status obtained from
The information in the memory section 6o is sent to the disk drive device (disc drive device) 70, and the digital information on voltage and current states obtained from the analog/digital converter 3o and the analog/digital converter 40 is graphed and output to the display section 300. It also controls each section and recognizes and confirms various information, such as sending digital information on the state of voltage and current in the memory section 60 to the digital/analog conversion section 100.

Reference numeral 60 denotes a memory unit, which is a storage device using a semiconductor memory and includes the control CP 1. It stores digital information from the J section 5o. 7o is a memory backup floppy disk drive (floppy disk drive for memory backup), and when the specified capacity of the memory unit 60 reaches its limit, the memory unit 60 is stored under the control of the control CPU unit 5o. A device that receives accumulated information and writes the information to a floppy disk. 8o is an I/O section which converts the operation instruction signal from the operation switch section 9o into a signal format that can be recognized and confirmed by the control CPU section 5o in order to send it to the control CPU section 5o. be. Reference numeral 90 denotes an operation switch section, which provides operational support to the control CPU section 50 via the I/O section 80 when the operator of the device issues operational instructions, thereby making the device function. . Reference numeral 100 denotes a digital/analog conversion section, which converts digital information on the voltage state and current state obtained from the memory section 60 via the control CPU section 5o into analog signals and sends them to the recorder section 400. I/O is a power supply unit, for example, DC (direct current) 5V
To operate with a single power supply, single-phase two-wire AC (alternating current) 1
Using a 00V power source as input, a transformer, rectifier, and regulator create a constant voltage of DC5V and supply it to each part. Reference numeral 300 denotes a display section, which displays information detected by the present device in a graph form, and also displays the information as supported by the operation switch section 90. Reference numeral 400 denotes a recorder section, which displays analog information on the voltage state and current state obtained from the digital-to-analog converter 100 to the display section 300.
The same indication is written on the paper.

Next, the overall operation will be explained. This device functions by connecting the detection section 10 (for voltage detection) and the detection section 20 (for current detection) to the telecommunication line 500 to perform voltage detection and current detection. FIG. 2 shows the flow of the process and the flow of searching the detected information. By operating the operation switch section 90, the device starts operating, and it is possible to select whether to collect information or search for previously collected information and display it on the display section 300 and the recorder section 400. Make a selection and issue a decision instruction. For example, if you select and instruct to collect information, the control CPU section 50 secures free space for writing in the memory section 60 and makes settings to enable writing. , the information sent out via the detection units 10 and 20 is transferred to the analog/digital conversion unit 3.
0 and 40. The analog/digital conversion section 30 digitally converts the received information into information that can be recognized and confirmed by the control CPU section 50 and sends it to the control CPU section 50 . The control CPU section 5
0 receives the converted information, and if the change is within a certain range compared to the previously received content in the memory unit 60 (yes), it is not written to the memory unit 60, and then the analog /Receives the information sent out from the digital converters 30 and 40. Furthermore, if there is a change outside the specific range compared to the previously received content in the memory unit 60 (no), a new write is made to the memory unit 60. The contents written into the memory section 60 are the received information and its time, and are sequentially written at regular second intervals. Further, if the user selects and instructs to search for information that has already been collected in advance, the control CPU section 50 determines whether to search for information collected from the detection section 10 (for voltage detection) or from the detection section 20. Wait for instructions from the device operator to determine whether to search for information collected from the first (for current detection) or both.

Thereupon, a selection is made arbitrarily and a decision instruction is given. In addition, if you select and instruct whether to display the searched information on the display section 300 or the recorder section 400, the memory backup FD
(Memory backup floppy disk drive device) 70 to select and determine the display section 300 or the recorder section 400 to search and display each piece of information written on a floppy disk (FD). Display it to those who have done so. The displayed form is time and each measured value of that time, which is displayed as a graph. Here, as described above, when there is no change compared to the previously received contents in the memory section 60, the control CPU section 50 sends the information to the memory section 60.
However, the previously received contents of the memory unit 60 are not written to the memory backup FD (memory backup floppy disk drive) 70, but after calculating the time for which no writing has been performed, the previously received contents of the memory section 60 are The information is displayed on the display section 300 or the recorder section 400.

〔Effect of the invention〕

As described above, according to the present invention, once detection is started, the electrical state of the telecommunication line can be constantly monitored without requiring any manual work. This makes it possible to perform not only temporal line monitoring and testing, but also long-term monitoring and testing, and by recording the time and status of a failure, it is possible to determine whether it is a temporal failure or an irregular failure. The advantage is that information useful for analyzing the causes of disconnection failures, including failures that occur at times, can be obtained.

That is, for example, if a part of a telecommunications line is temporarily disconnected and an arc discharge occurs, and then it is restored and reconnected, the time when the arc discharge occurred and the voltage and current conditions at that time are recorded and displayed. This allows you to know when arc discharge occurs. Similarly, it occurs because the current attenuates because the telecommunications line is about to break due to a decrease in tension, or because the voltage or current changes because the connections touch or separate. Occasionally, it is possible to analyze the cause of disconnection failures, etc.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a flowchart showing the overall operation of an embodiment of the present invention. 10...Detection section (for voltage detection), 20...Detection section (
(for current detection), 30... Analog/digital conversion section (for voltage information), 40... Analog/digital conversion section (for current information), 50... Control CPU section, 51.
... Control software section, 60... Memory section, 70... FD for memory backup, 80... I/O section, 90.
...Operation SW section, 100... Digital/analog conversion section, I/O... Power supply section, 200... Occasional disconnection status information collection device for telecommunications line, 300... Display section, 400... -Recorder section, 500...Telecommunications line.

Claims (2)

[Claims] (1) Detect the voltage state and current state of the telecommunication line, convert the detected voltage state and current state into digital information and store it in the memory unit, and then the detected voltage of the telecommunication line If the digital information of the state and the current state changes within a specific range compared to the previously detected contents in the memory unit, it is not written to the memory unit, and if there is a change outside the specific range, the digital information is written to the memory unit. 1. A method for occasionally collecting disconnection state information for a telecommunications line, characterized by writing information into a memory section and displaying information obtained from the memory section. (2) A detection section that constantly detects the voltage and current status of the telecommunications line, an analog/digital conversion section that converts the information obtained from this detection section into a digital signal, and an analog/digital conversion section that converts the information obtained from this analog/digital conversion section. a control CPU unit to be operated; a control program unit to control the control CPU unit; an operation switch unit to operate the control program unit and the control CPU unit; and the control CPU unit and the operation switch unit. an I/O section that couples the information, a memory section that stores information obtained from the analog/digital conversion section via the control CPU section, and an I/O section that stores the information obtained from the memory section via the control CPU section. a display unit that converts and outputs graphs; a digital/analog conversion unit that converts the information obtained from the memory unit via the control CPU unit into an analog signal; What is claimed is: 1. An occasional disconnection state information collecting device for a telecommunications line, comprising a recorder section that graphs and outputs the information.