JPS61238142A - Communication line monitor equipment - Google Patents

Abstract

PURPOSE:To grasp quickly timewise changes in the transmission efficiency by providing a data timer, a measuring time, a display timer and the 1st and 2nd arithmetic means. CONSTITUTION:A timer section 7 is provided with a data timer DTT started at the detection of a start character STX and stopped at the detection of a stop character ETX, a measuring timer MMT started by a measuring start command and stopped after the setting time and a display time DPT indicating the display timing of the transmission efficiency in the inside. When a measurement start command is given, the command is inputted to a control section 3 as an interruption signal and a flag representing the measuring mode is set by interruption processing to the interruption signal. On the other hand, when a character detection section 6 detects the start character STX, the detection signal is inputted to the control section 3 as an interruption signal and the interruption processing starts the data timer DTT.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication line monitoring device that monitors data flowing through a communication line by displaying it on a display device.

[Prior Art] Conventionally, an apparatus of this type as shown in FIG. 6 has been known. In Figure 6, (1) is the main body of the device, (2
) is the transmission/reception driver, (3) is the control unit, and (4) is the display unit. After the data flowing through the communication line (5) is taken in by the transmission/reception driver (2), the control unit (3) converts it into ASCII characters. It is converted into a code and displayed on the display section (4).

At this time, the data input to the control unit (3) is returned as is to the transmission/reception driver (2) and sent out to the communication line (5).

In addition to the function of converting the data flowing through the communication line (5) into ASCII characters for display, the control unit (3) has a function of measuring the effective communication time during which data is actually flowing through the communication line (5). It is configured such that the transmission efficiency within a predetermined time can be calculated from the effective communication time measured by this measurement function.

[Problems to be Solved by the Invention] However, since the conventional device described above does not have a function for automatically calculating transmission efficiency, when trying to calculate transmission efficiency, after measuring the effective communication time within a predetermined time, There was a problem in that the transmission efficiency had to be determined by hand calculation, and it was not possible to quickly grasp temporal changes in the transmission efficiency.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a communication line monitoring device that can quickly grasp temporal changes in transmission efficiency.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a data timer that is started when first data is detected among data flowing through a communication line and stopped when second data is detected. , a measurement timer that is started by a measurement start command and stopped after a set time, a display timer that instructs the transmission efficiency display timing at each set time, and a measurement start command input based on the timer values of the data timer and measurement timer. a first calculating means for calculating an effective communication time of data for a subsequent elapsed time and displaying the calculation result as a first transmission efficiency on the display device at each set time of the display timing; and a timer value of the data timer. and the effective communication time of data within the set time of the measurement timer based on the set time value of the measurement timer, and display the calculation result on the display device as a second transmission efficiency at the end of the set time of the measurement timer. 2 calculation means are provided.

[Operation] The first transmission efficiency is displayed in real time at every predetermined display timing, and the second transmission efficiency is displayed at the end of the set time of the measurement timer.

Therefore, by comparing the display contents of the first transmission efficiency and the second transmission efficiency, it is possible to quickly grasp temporal changes in the transmission efficiency.

[Embodiments of the invention] Hereinafter, the present invention will be explained in detail based on examples.

FIG. 1 is a block diagram showing one embodiment of the present invention.
1) is the main unit of the device, (2) is the transmitting/receiving driver, (3) is the control unit equipped with a calculation means for transmission efficiency, (4) is the display unit, (
5) is a communication line, (6) is a character detection unit that detects specific data specified by the user, such as start character STX and stop character ETX, and (7) is a timer unit, which is activated when the start character STX is detected. and a data timer DTT that is stopped when a stop character ETX is detected, a measurement timer MMT that is started by a measurement start command and stopped after a set time, and a display timer DPT that instructs the transmission efficiency display timing. We are prepared.

In this configuration, the first transmission efficiency, that is, the transmission efficiency P in the elapsed time after inputting the measurement start command,
is pD= (DTT (t)/MMT (t))X100
(%)...Calculated by the control unit (3) using the formula (1). here,
DTT(t> is the current value of data timer DTT, MMT(
t) is the current value of the measurement timer MMT.

In addition, the second transmission efficiency, that is, the transmission efficiency PM until the end of the set time of the measurement timer MMT, is P, = (DTT
(t>/TH>
TM is the set time value of the measurement timer MMT.

FIG. 2 is a flowchart showing the operation of the control unit (3) that measures and displays the transmission efficiency P, , P, FIG. 3 is a flowchart showing the operation when a measurement start command is given, and FIG. The figure shows the character detection unit (6) when the start character STX and stop character ETX are detected.
) is a flowchart showing the operation.

First, in FIG. 3, when a measurement start command is given, this command is input to the control section (3) as an interrupt signal, and a flag indicating the measurement mode is turned on by interrupt processing for this interrupt signal.

On the other hand, the character detection section (6) detects the start character S.
When TX is detected, this detection signal is input to the control section (3) as an interrupt signal, and the data timer DTT is started by the interrupt processing. Further, when the stop character ETX is detected, this detection signal is inputted as an interrupt signal to the control section (3), and the data timer DTT is stopped by the interrupt processing.

On the other hand, the control unit (3) constantly monitors whether the measurement mode is turned on (step 20 in FIG. 2).
If it is not the measurement mode, the communication time I! is the same as before. (
5) only controls the display of data flowing to step 2 (step 2).
1). However, when the measurement mode is turned on, the measurement timer MMT and display timer DPT are started and monitored (step 22). And display timer D
The PT timer value is the display timing specified by the user □
When the transmission efficiency becomes equal to T (step 23 > reset DPT (step 24)), the transmission efficiency P.

Display and restart DPT (steps 25 and 26)
.

Next, the measurement timer value MMT(t) and the set measurement time T
8, and if they are not equal, the same processing as the conventional device is performed, and the process returns to DPT monitoring. However, M.M.
T (if t>=TM, reset the measurement timer MMT (step 28), display the transmission efficiency PH and a measurement completion message on the display section (4), then turn off the measurement mode and return to the start state (step 28). 29.30).

FIG. 5 is a diagram showing the operation along the time axis when the present invention is applied to measuring the transmission efficiency of communication data using the 88C procedure, where T is the display timing and DTTn (n
-1 to 5) indicate the display timing or the value of the data timer DTT when the stop character ETX is detected. In addition, A~ indicates the following.

A. Measurement start B. By detecting the start character STX,
Data timer DTT activation C0 display timing detection, data timer DTT value is D
TTI, transmission efficiency = (DTT 1/TO)
100 (%) is calculated and displayed, and upon detection of the stop character ETX, the data timer DTT is stopped, and the value of the data timer DTT at this time is DTT2.

Calculate E0 display timing detection P2=(DTT2/2TO)xioo(%) and start data timer DTT by detecting display F, STX G, E
Data timer DTT stops when TX is detected, timer value at this time is DTT3 H0 display timing detection P - (DTT3/3T,)X100 (%) is calculated and display 1, data timer DTT starts when STX is detected J1 display timing Detection, timer value DTT4, P4 = (DTT
4/4T□ ) xloo (%) is calculated and displayed, measurement timer MMT timeout, timer value DTT5
Final transmission efficiency P. = (DTT5/TH)X100(%
) is calculated and displayed, and a measurement completion message is displayed.As described above, according to this embodiment, the user calculates and displays the start character STX, stop character ETX, measurement time TM, and display timing T. Since the transmission efficiencies PD and PH can be displayed in real time simply by specifying , it is possible to quickly grasp temporal changes in the transmission efficiency by comparing the transmission efficiencies P and PM.

In the above embodiment, the transmission efficiency PM is calculated by dividing the time DTT(t) from the detection of the start character to the detection of the stop character by the measurement time TH. Substantially the same effect can be obtained by updating and dividing the counter value by the measurement time to display the number of data per unit time.

[Effects of the Invention] As explained above, the present invention includes a data timer that is started when the first data among the data flowing through the communication line is detected and stopped when the second data is detected, and a data timer that is started by the measurement start command. a measurement timer that is stopped after a set time, a display timer that instructs the transmission efficiency display timing at each set time, and a display timer that displays data for the elapsed time after inputting the measurement start command based on the timer values of the data timer and measurement timer. a first calculation means for calculating an effective communication time and displaying the calculation result as a first transmission efficiency on the display device at each set time of the display timing; a timer value of the data timer and a set time value of the measurement timer; a second calculation means for calculating the effective communication time of data within the set time of the measurement timer based on the set time of the measurement timer, and displaying the calculation result as a second transmission efficiency on the display device at the end of the set time of the measurement timer. It is something.

Therefore, temporal changes in transmission efficiency can be quickly grasped, which is extremely useful for monitoring communication lines.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG.
FIG. 4 is a flowchart showing the operation when measuring and displaying the transmission efficiency, and FIG. 5 is a diagram showing the situation when measuring the transmission efficiency of communication data in the BSC procedure along the time axis.
FIG. 6 is a block diagram showing the configuration of a conventional device. (1)...device main body, (2)...transmission/reception driver,
(3)...control section, (4)...display section, (5)...
・Communication line, (6)...Character detection unit, (7)・
...Timer section. Agent: Patent attorney Masuo Ohone (2 others) Figure 2 Figure 6

Claims (1)

[Claims] In a communication line monitor device that is inserted into a communication line and displays data flowing through the communication line on a display device, the communication line monitor device is activated when first data among the data flowing through the communication line is detected and stopped when second data is detected. data timer,
A measurement timer that is started by a measurement start command and stopped after a set time, a display timer that instructs the transmission efficiency display timing at each set time, and a display timer that is started after a measurement start command is input based on the timer values of the data timer and measurement timer. a first calculating means for calculating effective communication time of data with respect to elapsed time and displaying the calculated result as a first transmission efficiency on the display device at each set time of the display timing; and a timer value of the data timer and measurement. A second calculation that calculates the effective communication time of data within the set time of the measurement timer based on the set time value of the timer, and displays the calculation result on the display device as a second transmission efficiency at the end of the set time of the measurement timer. A communication line monitoring device comprising means.