JPH0627754B2 - Failure analysis device for communication maintenance - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a failure analysis device for communication maintenance capable of efficiently performing maintenance of equipment to be maintained, which is composed of a plurality of types of communication equipment used for various communications.

[Prior Art] For example, at communication points arranged at regular intervals, for example, a switching device, a wireless carrier device, a mobile communication device, a wired transmission device, etc. for performing various communications between the points are installed.

Therefore, it is necessary to maintain and maintain each of these communication devices in the best condition at all times. If some kind of failure occurs, it is necessary to correct the failure in a short time. Therefore, a failure such as simple replacement of parts such as a unit is dealt with at the corresponding communication point.

When a failure occurs in each communication device, select from a large number of measuring instruments such as a signal generator, a power meter, a frequency meter, and a waveform analyzer in order to perform a failure analysis on the communication device in which this failure has occurred. Then, load each selected measuring device on the communication maintenance vehicle, carry it to the position where the equipment to be maintained is installed, and connect each measuring instrument and the equipment to be connected with the connection cable to perform various failure analyzes. . Then, the maintenance staff examines the failure analysis result and identifies the failure site. When the faulty part is specified, the assembled component (unit, etc.) including the faulty part is replaced, and the fault analysis is performed again to confirm that the analysis result is normal.

[Problems to be Solved by the Invention] However, the above-mentioned maintenance work of each communication equipment is performed by a dedicated maintenance technician who prepares a large number of measuring equipment corresponding to the communication equipment having a failure, and The connection cable between the equipment and the equipment to be maintained, measurement, determination of the measurement result, identification of the faulty part, replacement of the circuit board and parts including the faulty part, etc. were all done by hand.

As a result, this maintenance work requires skilled maintenance personnel, and even if the communication equipment breaks down, it is difficult for an unfamiliar person to easily perform maintenance using each measuring instrument.

Further, since it is necessary to perform the work of changing the connection cable between the measuring device and the equipment to be maintained every time one failure analysis is performed, the efficiency of the maintenance work is further reduced.

Also, because it depends heavily on the intuition and skill of the maintenance personnel,
Even if the same analysis result is obtained, there is individual difference in whether this part is considered to be defective and this part is replaced, or the result of this degree is judged to be normal, resulting in a uniform maintenance state. There is a concern that can not be maintained. Further, the maintenance work efficiency greatly changes depending on the skill level of the maintenance staff.

The present invention has been made in view of such circumstances,
During the maintenance work by providing a maintenance program that stores the failure analysis procedure and analysis result judgment criteria for each communication equipment installed at this communication point, and an input / output connection device that switches and controls the connection state of each measuring instrument. For simplification of connection cable replacement work, and maintenance work can be performed interactively, even for unfamiliar maintenance personnel, uniform maintenance quality can be obtained, and maintenance work efficiency can be greatly improved. An object is to provide a failure analysis device.

[Means for Solving the Problems] In order to solve the above problems, in the failure analysis device for communication maintenance of the present invention, various functions and performances of each equipment to be maintained, which is communication equipment used for various communications, are measured. Depending on each measuring instrument, multiple measuring instruments including a frequency meter, wattmeter, signal generator, etc., and input / output connecting equipment for switching connection between these measuring instruments or between each measuring instrument and each equipment under maintenance, A display for displaying various information including measurement results for each equipment to be maintained, a keyboard for inputting various operation commands,
For each equipment to be maintained, a storage unit that stores a plurality of maintenance programs that stores the failure analysis procedure using each measuring instrument for the equipment to be maintained and the judgment criteria of the analysis result, and input / output in response to the start command Selection guide display means for displaying on the display an operation guide for selecting equipment to be maintained for each equipment to be connected to the connected device, and a storage unit for a maintenance program of one equipment to be selected by key input operation of the keyboard Read from the test execution means for executing the failure analysis on the equipment to be maintained by using each measuring device in accordance with this maintenance program, and the judgment for judging the failure analysis result based on the judgment standard and displaying the judgment result on the display. A result display means and an obstacle member display means for identifying a faulty member to be a failure target when the determination result is defective and displaying the faulty member on the display to suggest replacement of the faulty member. To have.

[Operation] In the failure analysis device for communication maintenance configured as described above, each measuring device necessary for carrying out a failure analysis for each equipment to be maintained prepared by this failure analysis device is housed. . Then, the connection between the measuring instruments and the connection between the measuring instruments and the equipment to be maintained are executed by the input / output connection device.
Further, in the storage unit, a plurality of maintenance programs are stored for each equipment to be maintained, which stores a failure analysis procedure using each measuring device for the equipment to be maintained and a criterion for determining an analysis result.

Then, when the maintenance worker connects the equipment to be repaired to the input / output connection device and activates the device, each equipment to be maintained corresponding to the maintenance program stored in the storage unit is displayed on the display. An operation guide for selecting one of the equipment to be maintained is displayed. Therefore, the maintenance staff selects the equipment to be maintained, which is to be subjected to the failure analysis, with the keyboard.
Then, the maintenance program corresponding to the equipment to be serviced is activated, failure analysis is automatically performed using each of the measuring instruments based on the maintenance program, and the analysis result is stored in the stored judgment criteria. The quality is judged by using.
If the determination result is defective, the obstacle member to be defective is displayed, so that the maintenance person can replace the obstacle member.

That is, the maintenance worker may perform the maintenance work on the equipment to be maintained according to the operation guide displayed on the display.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a communication maintenance failure analysis apparatus according to an embodiment. This communication maintenance failure analysis device is mounted in, for example, one vehicle, and can freely move to a communication point. Then, at this communication point, for example, a switching device 2a, a wireless carrier device 2b, a mobile communication device 2c, a wired transmission device 2d, etc. for performing various communications between the points are installed. Therefore, each of these communication equipment becomes a maintenance equipment.

In the failure analysis device 1 for communication maintenance, the plurality of equipments 2a to 2d to be serviced are classified into two types, that is, exchange device-related and transport / transmission / mobile communication-related, and input / output connection devices for each classification. 3a and 3b are provided. Then, the input / output connection device 3a corresponding to the exchange device is
Various measuring instruments 4 necessary for carrying out a function / performance test of the exchange device 2a such as an AF level meter are connected.

In addition, the input / output connection device 3b corresponding to the carrier / transmission / mobile communication relationship includes various carriers such as a frequency meter, a power meter, a waveform analyzer, a circuit meter, a waveform observer, two kinds of signal generators, and a DC power source. / Various measuring instruments 4 necessary for carrying out failure analysis of the transmission / mobile communication device are connected.

Then, the measurement data of each measuring device 4 and the output data of the signal generator are input to the input / output interface 5 a of the control unit 5. Further, each of the input / output connection devices 3a and 3b receives a switching control signal output from the input / output interface 5b of the control unit 5, or the measuring instruments 4 are connected to each other, or the measuring instruments 4 and the fault analysis device 1 for communication maintenance. The equipment to be maintained 2a-2d connected to is switched and connected.

The operation of each of the measuring instruments 4 is also controlled by the drive control signal output from the input / output interface 5b of the control unit 5.

The control unit 5 outputs a test command to the maintenance target materials 2a to 2d connected to the failure analysis device 1 for communication maintenance to each of the input / output connection devices 3a and 3b and each of the measuring instruments 4 for failure analysis. It has a function to execute. Further, specifically, the control unit 5 is composed of a kind of microcomputer, and as shown in the figure, a bus line 5c is formed by a processor (MPU) 5d for executing various information processing, such as a semiconductor memory device. A main storage unit 5e configured, an auxiliary storage unit 5f configured by a floppy disk drive unit (FDD), an auxiliary storage unit 5g configured by a hard disk unit (HDD), and a maintenance staff for inputting various commands. A keyboard 5h, a display 5i composed of, for example, a CRT display for displaying operation guidance and measurement results, and if necessary, an external host computer for measuring data obtained by each measuring instrument 4, failure analysis results, and maintenance. Centroni for printing out the analysis result and maintenance result by using the expansion interface 5j for transmitting the result and the printer 5k. Scan interface 5, and the input-output interface 5a described above, 5b are connected.

In the auxiliary storage unit 5g, each measuring device 4 is provided for each equipment to be maintained which is made up of each communication equipment installed at this communication point.
a to 4d and a plurality of maintenance programs storing the test procedure for carrying out the failure analysis test, the function test and the performance test of the equipment to be serviced using the input / output connection devices 3a and 3b and the judgment criteria of the analysis result are stored. Has been done.

Further, in the main storage unit 5e, a maintenance control program for allowing the maintenance person to select the equipment to be maintained before the maintenance work is started or reading the maintenance program of the selected equipment to be maintained from the auxiliary storage unit 5g. Is remembered.

When servicing communication equipment having some abnormality using the communication analysis failure analysis device 1, the communication equipment is used as the equipment to be maintained, and the input / output devices 3a and 3b assigned to the equipment to be maintained. Connect to. Specifically, the signal input / output terminal of the equipment to be serviced and each connection terminal of the input / output connection devices 3a and 3b are connected via a dedicated connection cable. After checking the connection, turn on the power to the entire device. When the power is turned on, the control unit 5 including a microcomputer is activated, and the maintenance control program stored in the main storage unit 5e is activated. Then, the processor 5d executes the flow chart of FIG. 2 based on this maintenance control program.

That is, when the power of the entire apparatus is turned on, a maintenance start message is displayed on the display 5i at P (program step) 1 and whether the current work is maintenance work or recording work at P2. A message prompting selection is displayed on the display 5i. Then, in P3, when the maintenance person inputs the maintenance key on the keyboard 5h, the equipment name of each equipment to be maintained in the maintenance program stored in the auxiliary storage unit 5g in P4 is shown in FIG. 3 (a). As described above, the numbers 1 to 4 are added and displayed. Then, an operation guide for selecting which equipment to be maintained is displayed at the lower position of the screen.

Then, in P5, in this state, when the number of the equipment to be maintained that is currently connected to the input / output connection devices 3a and 3b of this device is keyed in from the keyboard 5h, the maintenance program corresponding to the relevant equipment to be maintained is entered. After reading out, each test item is displayed at P6 as shown in FIG. 3 (b). Then, in P7, the failure analysis corresponding to the corresponding item is executed, and the result is displayed. Then, in P8, the quality of the analysis result is determined based on the determination standard stored in the storage unit. If it is normal, the key input operation of the confirmation key is waited at P10, and the test of the next test item is performed.

In addition, if the analysis result is bad, at P9, FIG.
As shown in, the failure site is displayed on the display 5i,
Encourage the replacement of assembly parts (units, etc.) including the relevant parts. When the unit replacement is completed, the confirmation key is pressed at P10.

FIG. 4 is a flow chart showing a specific maintenance procedure in the case where the wireless transfer device 2b is selected as the equipment to be maintained in P5 of FIG.

That is, when the equipment to be maintained is selected, various parameters are set to the input / output connection device 3b to which the wireless transfer device 2b is connected and each measuring device 4 via the input / output interfaces 5b and 5a. Then, the self-diagnosis command is sent to the corresponding wireless carrier device 2b. That is, in general, each equipment to be maintained 2a to 2d has a self-diagnosis function for a simple failure. And each equipment to be maintained 2
a to 2d generate various alarms according to the self-diagnosis result. When an alarm occurs, the maintenance personnel replaces the assembled parts (units, etc.) of the part corresponding to the alarm. Also in this wireless carrier device 2b, for example, when a power supply alarm indicating a power supply abnormality is issued, the power supply unit may be replaced. Also, when the modulation alarm is issued, the modulation unit is replaced. Further, when a local alarm is issued, the local oscillator unit is replaced.

In this way, by self-diagnosis, for a simple failure such that the part does not operate at all, the failure occurrence part can be easily found without using each measuring device 4.

Then, after self-diagnosis is performed to eliminate obstacles such as that part not operating at all, obstacle analysis using each measuring device 4 is automatically executed for each item after S1. That is, the transmission power measurement, which is the first test item, is executed in S1. Specifically, the signal generator is activated, a test signal is applied to the signal input terminal of the wireless carrier device 2b, which is the equipment to be maintained, via the input / output connection device 3b, and the output signal output from the output terminal is changed. It is received by the wattmeter via the input / output connection device 3b. Then, this power meter measures the power level. Then, the power level is displayed on the display 5i as measurement data. Further, the quality of the measurement data is judged by comparing the measurement data with a judgment reference value stored in advance. Then, if it is normal, as shown in FIG. 3 (b), [OK] is displayed in the judgment column of the display 5i, and if it is defective, [NO] is displayed in the judgment column. Then, in the case of failure, as shown in FIG. 3 (c), the operation guidance of [replacement of power amplification unit, modulation unit] including the faulty part is displayed. Then, when the maintenance personnel presses the confirmation key after the replacement of the power amplification unit and the modulation unit is completed, the same transmission power measurement is performed again. When it is confirmed that the analysis result is normal, the process proceeds to S2.

In S2, transmission frequency measurement, which is the next test item, is executed. That is, in this transmission frequency measurement,
The wireless carrier device 2b is activated under the same conditions as in the above transmission power measurement, and the output signal output from the output terminal is received by the frequency meter via the input / output connection device 3b. Then, the frequency is measured, and the frequency is used as measurement data on the display 5
Display on i. Then, the quality is judged by comparing with a judgment reference value stored in advance. If the determination result is bad, an operation guide for replacing the modulation excitation unit and the local oscillation unit is displayed.

When the transmission frequency satisfies the criterion, the occupied frequency band of the output frequency is measured in S3 under the same test conditions as described above. Specifically, the output signal of the wireless carrier device 2b is subjected to frequency analysis using a waveform analyzer (spectrum analyzer) to obtain an occupied frequency band and compared with a determination reference value to determine pass / fail. If defective, replace the modulation unit and the power amplification unit.

Further, in S4, the distortion factor of the output signal waveform is measured. Then, if the measurement result does not satisfy the determination standard, the modulation unit and the power amplification unit are replaced in the same manner as described above.

In the above processing from S1 to S4, the auxiliary storage unit 5g
Since the failure analysis and the failure unit replacement based on the results set in the maintenance program stored in the above have been completed, the maintenance processing for this wireless carrier device 2b is completed.

Then, the article number or the like of the unit replaced with the faulty part is printed out, for example, on the printer 5k, and is stored in the auxiliary storage section 5f together with the fault analysis result.

Further, FIG. 5 is a flow chart showing a specific maintenance procedure when the replacement device 2a is selected as the equipment to be maintained in P5 of FIG.

That is, when the corresponding equipment to be maintained is selected, various parameters are set to the input / output connection device 3a to which the exchange device 2a is connected and each measuring device 4 via the input / output interfaces 5b and 5a. Then, before the failure analysis is started for the exchange device 2a, a self-diagnosis command is sent to the exchange device 2a in the same manner as described above to cause the self-diagnosis to be executed, and the presence or absence of a rough abnormality is checked. First, in Q1, it is checked whether or not the lamp of each part can be turned on. If it cannot be lit, replace the common circuit and central control unit.
In addition, it is checked whether the necessary lamp can be displayed by lighting the lamp. If not possible, replace each panel circuit and central control unit. Also, another one on this exchange
Check whether the normal operation is achieved when the switchboards are stacked. If it does not work properly, replace the connection cable between the central control unit and the equipment. Furthermore, in Q2, check the side tone of the handset, and if it is defective,
Replace each common circuit and handset.

In this way, the self-check function is used to deal with a simple failure.

After the simple maintenance by the above self-inspection is completed, Q3
After that, the failure analysis using each measuring device 4 is carried out for each item. That is, at Q3, a signal is sent from the signal generator to the exchanging device 2a as the equipment to be maintained through the input / output connecting device 3a, and the exchanging device 2a outputs a call signal of 20 Hz to output a power meter and a frequency meter. To measure the signal level and frequency. Then, it is checked whether or not those measurement data satisfy the judgment standard, and the judgment result is displayed on the display unit 5.
In addition to being displayed on i, if it is defective, an operation guide for replacing the common circuit unit B is displayed. When the mechanic replaces the corresponding common circuit unit B and presses the confirmation key, Q3 again
Return to and execute the same test to confirm that the analysis results meet the criteria.

Next, in Q4, a PB dial signal is similarly sent from the switching device 2a, and the signal level and frequency are measured by the power meter and the frequency meter as described above. Then, it is checked whether or not those measurement data satisfy the criteria,
The judgment result is displayed on the display unit 5i, and in the case of failure, the common circuit unit A and the switch circuit replacement operation guide are displayed.

In Q5, call loss measurement is performed when a call is made via the exchange 2a. That is, in a state where a call loop is formed between an arbitrary line terminal and another line terminal of the switching device 2a, a pseudo call signal is applied from one line terminal and a signal output from the other line terminal. Measure the signal level of with a power meter. Then, the call loss during that time is obtained, and it is checked whether or not this call loss satisfies the determination standard, and the determination result is displayed on the display 5i. In the case of failure, the common circuit unit A and the switch circuit are displayed. Display the operation guide that prompts you to replace.

By the above processing from Q3 to Q5, the auxiliary storage unit 5g
Since the trouble analysis and the trouble unit replacement based on the results set in the maintenance program stored in the above have been completed, the maintenance for this exchange device 2a is completed.

Similar to the above-described two equipments 2b and 2a to be maintained, the failure analysis is automatically executed for other equipments to be maintained according to the respective maintenance programs stored in the auxiliary storage unit 5g. The result is displayed on the display unit 5i, and the replacement of the defective assembly part (unit or the like) is instructed.

According to the communication maintenance failure analysis device configured in this way, when a failure occurs in the communication equipment at the communication point or at the time of regular inspection and maintenance, the communication equipment is treated as the equipment to be repaired The assigned input / output connection devices 3a, 3
When the power is supplied to the control unit 5 of the communication analysis failure analysis device 1 by connecting to b, a menu of the equipment to be maintained is displayed on the display unit 5i. When the maintenance personnel designates the equipment to be maintained from the displayed equipment to be maintained by operating the keyboard 5h, the maintenance program corresponding to the equipment to be maintained stored in the storage unit is activated and the corresponding equipment to be maintained is started. Failure analysis for maintenance equipment is automatically performed using each measuring device. Then, when the faulty part is specified, an operation guide for prompting the replacement of the assembled component (unit or the like) of the member including the corresponding part is displayed.

In this way, the failure analysis for each equipment to be maintained is automatically performed, and the quality of the measurement result is automatically determined, and the failure site is automatically displayed. Therefore, the work load on the maintenance staff can be significantly reduced as compared with the conventional case where maintenance is performed by manual operation by the maintenance staff.

Further, even if the maintenance personnel who are familiar with the handling of the measuring instruments 4 and the equipments 2a to 2d to be maintained, it is sufficient to perform the work such as the unit replacement of the obstacle member according to the operation guide displayed on the display 5i. Therefore, even an unskilled person can obtain a good maintenance result.

Moreover, since the measurement is automatically performed, the efficiency of maintenance work can be significantly increased. Furthermore, each equipment to be maintained is only connected to each measuring instrument 4 via the input / output connection devices 3a and 3b, and all switching operations of signals between the measuring instruments and between the measuring instrument and each equipment to be maintained are performed. Since the input / output connection devices 3a and 3b controlled by the control unit 5 are automatically performed, the occurrence of erroneous connection is prevented. Therefore, the reliability of the maintenance result can be improved.

[Effects of the Invention] As described above, according to the communication maintenance failure analysis apparatus of the present invention, for example, a maintenance program that stores a failure analysis procedure and analysis result determination criteria for each communication equipment installed at a communication point. And an input / output connection device for switching and controlling the connection status of each measuring instrument. Then, when each communication equipment is maintained, failure analysis can be automatically performed on the equipment to be maintained by using the maintenance program, and the analysis result is automatically determined. Therefore, it is possible to simplify the work of changing the connection cables during the maintenance work, and to perform the maintenance work interactively. Even unskilled maintenance personnel can obtain uniform maintenance quality and greatly improve the maintenance work efficiency. it can.

[Brief description of drawings]

FIG. 1 shows a failure analysis device for communication maintenance according to an embodiment of the present invention. FIG. 1 is a block diagram showing the configuration of the entire device, and FIGS. 2, 4, and 5 show the operation respectively. FIG. 3 is a flowchart showing the display format on the display. 1 ... failure analysis device for communication maintenance, 2a-2d ... equipment to be maintained (communication equipment), 3a, 3b ... input / output connection equipment, 4
...... Measuring device, 5 ...... Control unit, 5a, 5b ...... Input / output interface, 5d ...... Processor, 5h ...... Keyboard, 5i ...... Display device.

Claims (1)

[Claims] 1. A plurality of measuring devices (4) including a frequency meter, a power meter, a signal generator, etc. for measuring various functions and performances of each equipment to be maintained, which is made of communication equipment used for various communications. Input / output connection device (3a, 3b) for switching connection between each measuring instrument or each measuring instrument and each equipment to be maintained, and various information including measurement results for each equipment to be maintained by each measuring equipment. A display (5i) for displaying, a keyboard (5h) for inputting various operation commands, and for each said equipment to be maintained,
A storage unit (5g) that stores a plurality of maintenance programs that stores failure analysis procedures and determination criteria for analysis results using the measuring instruments for the equipment to be serviced, and the input / output connection device in response to a start command. Selection guide display means (P4) for displaying operation guides for selecting equipment to be maintained for each equipment to be connected to the display device, and a maintenance program for one equipment to be selected by key input operation of the keyboard From the storage unit to execute the failure analysis on the equipment to be serviced using each of the measuring instruments according to the maintenance program, and a test execution means (P7), and the failure analysis result is determined based on the determination criteria. The determination result display means for displaying the determination result on the display (P7), and when the determination result is defective, the obstacle member to be defective is specified and displayed on the display, and the corresponding obstacle member is displayed. A failure analysis device for communication maintenance, comprising an obstacle member display means (P9) for suggesting replacement.