JPS6089152A - Device for measuring utilizing factor of on-line - Google Patents

Abstract

PURPOSE:To measure the utilizing factor of an on-line by accumulating timewise length of a data signal, and measuring the closing state of a relay. CONSTITUTION:Whether or not an on-line signal is a data signal is discriminated, then the signal is a data signal, the timewise length of the signal is measured. The measured timewise length is added and accumulated sequentially in a measuring storage means. The relay means closes a relay in response to the stored time length. A traffic counter displays digitally the utilizing factor of a transmission line on a recording paper sheet by measuring the state of the relay.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a device for measuring the frequency of use of an on-fin line.

[Prior art]

Figure 1 shows an outline of the current online transmission system.

In the figure, a signal from a main computer 90 passes through a transmission control device 80 and is modulated by an aggregation/demodulation device 70. The modulated signal is sent to the terminal demodulator 60 of each terminal through the entire transmission path. A terminal demodulator 60 demodulates the signal from the transmission path and provides it to the terminal device.

The terminal device 50 receiving the signal from the main computer 90 transmits the terminal frequency/demodulation device 60→transmission path→collective modulation/demodulation device 70→
The signal is sent back to the main computer 90 through the entire route of the transmission control device 80. As described above, the main computer 90 and the terminal device 5
Signals are exchanged with 0.

Here, the aggregation degree/demodulation device 70 and the terminal fragmentation/demodulation device 6
The number of transmission lines connected to 0 must be appropriately selected depending on the frequency of use of each transmission line. To achieve this, it is necessary to measure the frequency of use of each transmission path, which is considered to be an essential issue for future packet transmission and data exchange.

The first method that can be considered for measuring the usage frequency is a method using software of the main computer 90. With this method, it is only possible to grasp the amount of work given to the terminal device 5o. Therefore, it is not possible to determine the exact time when a transmission error occurs and actually occupies the line.

Furthermore, as a device for measuring the frequency of use of a transmission line, there is a traffic e-counter for telephone lines. This is a device that records the number of times each transmission line is occupied within a certain period of time and the total time by making full use of the fact that the relay of the telephone X switch is closed during the call period.

However, traffic counters cannot be used as is to measure the frequency of use of online transmission paths. This is due to the following reasons.

(b) Traffic counters operate on telephone direct current contacts for 1 second or more. On the other hand, online signals have different signal formats.
Since it is a t/S signal, the traffic counter does not operate.

(b) Since online signals are constantly being sent,
Even with the addition of a conversion circuit, measurements cannot be made using a top-accuracy counter.

The O-on-fin signal includes a polling signal for checking the status of the terminal device 50. The polling signal is
This is a signal that is constantly issued periodically when there is no data signal. Therefore, it is necessary to treat the transmission line as essentially usable while the boring signal is being issued. However, the traffic counter does not have a function to distinguish between polling signals and data signals, and cannot be used as is.

[Purpose of the invention]

This invention is a device that solves the above problems and measures the frequency of online line usage. :1 It is to offer.

[Structure of the invention]

The configuration of this invention will be explained based on FIG. 2.

The signal determining means completely determines whether the online signal is a data signal. If the signal is a data signal, the data signal time measuring means measures the time length of the signal. The measured time lengths are sequentially added up and stored in the measurement time storage means. i
The power supply means closes the relay depending on the accumulated time length. The traffic counter digitally displays the usage rate of the transmission line on a recording paper by measuring the state of the electric appliance.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG.
It is composed of. Each transmission path is called a channel, and the number of codes A corresponds to the number of channels of the transmission path.

One channel is composed of a transmission chuck /l/(SD) from the main computer 90 and a reception chuck /I/(RD) from the terminal device 50.

FIG. 4 is a block diagram showing a utilization rate measuring device for one channel. In the figure, the transmission channel signal input from the input terminal SD (hereinafter referred to as the SD double signal)
is converted from the R3232C level to the TTL level by the signal level/L/conversion circuit 1. The converted signal is converted from the NRZ I code to the NRZ code by the code conversion circuit 2 as shown in FIG. Figure 5(a) shows the NRZ
The Iri code is converted to the NRZ code, and the NRZ code is shown in Figure 5. The receiving channel signal -υ゛ (hereinafter referred to as the RD multiplied signal) input from the input terminal RD is also added to the data bus DB in the same process.

20 is a microcomputer, basically CPU6
.

It is composed of ROM4 and RAM5.

FIG. 6 is a diagram showing all signal formats, with FIG. 6(b) showing a data signal and FIG. 6(b) showing a polling signal. In the figure, F is a flag and has a length of 1 byte (8 bits). Flag F is 0111111
A data signal consisting of a 0 signal.

It is attached to the beginning 9 and end υ of the polling signal. A.

C is a signal indicating address and control, each having a length of 1 byte. Fe3 is a frame detection signal and has a length of 2 bytes. Therefore, the polling signal has a length of 6 bytes. The length of the data signal varies depending on the time length of the information signal I, but it is much longer than the polling signal.

FIG. R7 is a flowchart of the program written in the ROM 4 of the Microninputer 20. The operation of the block diagram shown in FIG. 4 will be explained according to the flowchart shown in FIG.

When the program starts, the microcomputer 20 first judges the SD double signal and the RD double signal (step 1).

Assume now that there is an SD double signal. The microcomputer 20 reads the output of the serial/parallel conversion circuit 3 from the data bus DB and determines whether it is the shift flag F (steps 2 and 3). If the word is flag F, the process returns to step 1. If the flag is not F, proceed to step 4.

In step 4, the last flag Fe is detected to confirm the end of the data signal and Z-ring signal. If the signal is not yet completed, the contents of the word count register WC are incremented by 1 (step 5). Then read the next word (step 2).

When the above operation is repeated, the word length of the signal is registered in the word count register WC. When the last 7 lags F of the signal are detected and the end of the signal is confirmed (step 4), the process moves to step 6. In step 6, the contents of the word count register WC are checked and 10
If it is greater than or equal to 10 bytes, it is treated as a data signal, and if it is less than 10 bytes, it is treated as a polling signal.Here, the length of the first polling number is 6 bytes.The reason for this is as follows. In the middle of transmission, the signal includes unnecessary parts before and after that which are not sent by the master processor 90, as shown by the dotted line part in FIG.
In the case of C), the value of the word count register WC becomes 7 as shown by the arrow, and if 6 is the standard, then it is determined to be a data signal and a malfunction occurs. Furthermore, since it is highly unlikely that the data signal is less than 10 bytes, even if the lθ byte is used as a reference, the data signal will not be mistaken for a polling signal.

It is determined in step 6 that it is a polling signal, and the lever word count register WC is cleared (step 10).
Return to step 1. If it is a data signal, the data time Tf
Calculate fi and add to register SDT (Step 7)
. If the contents of the register SDT are for a predetermined period R, for example 1 second or more, relay RLI 'e is made conductive for 1 second (step 9). Output terminal S from relay RL1 is connected to a traffic counter. Note that normally,
Since the traffic counter measures the vehicle position in one second, it is necessary to make the time during which the relay RLI is conductive to a little longer than one second to prevent malfunction. After turning on relay RLI, the word count register WC is completely cleared and the process returns to step 1. By repeating the above steps, the measurement using the traffic counter progresses.

Note that if the developed photodiode is turned on from the time the data signal is input until the end of the data signal, it is possible to visually determine the rough usage rate and the operating state of the measuring device.

Although FIG. 7 is a flowchart for the SD multiplied signal, the same processing is performed for the immediate signal from step 1 onwards.

〔Effect of the invention〕

The present invention has the configuration shown above and has the following effects.

ω Since it has a function to distinguish between polling signals and data signals, it is possible to measure the actual utilization rate of the on-fin line.

(b) Conventional counters outside the network can be used to measure the utilization rate of online lines, and the entire measuring device can be easily configured with a traffic counter.

e) In addition to traffic counters as display means,
Counts can also be easily recorded using a printer.

You can effectively utilize the functions of the rough iso outside counter.

For example, the totals can be digitally recorded for each channel on a time-by-time basis.

(e) The usage rate can be measured without affecting the actual operation of the online line.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the outline of the online transmission system, Figure 2
3 is a functional block diagram showing the configuration of the present invention, FIG. 3 is a diagram showing how the measuring device according to the invention is used, FIG. 4 is a block diagram of the converter, FIG. 5 is a diagram showing the code format, and FIG. The figure shows the signal format, and Figure 7 shows the ROM 4
This is a flowchart of the program written in the . 1.7... Signal level conversion circuit, 2, 8... Code conversion circuit, 3, 9... Serial/parallel conversion circuit, lO... Timer, 11... Driver! , 20... Microcomputer, 30... Converter, 4o... Traffic counter, 50... Terminal device, 60... Terminal side liquid/demodulator, 70... Aggregation level/demodulator, 80...
Transmission control device, 90...main computer, RLI, RL2.
...Relay, A...Code agent Patent attorney Higashijima
Ryuji Figure 5 Figure 6 Figure 11111-7 Byte -1111111 Figure 7

Claims (1)

[Scope of Claims] (1) Determining means for determining whether an input signal is a data signal or a polling signal, a measuring means for measuring the entire time length of the data signal based on the determination by the determining means, and said measurement. An on-fin line utilization rate measuring device comprising: a storage means for sequentially adding and storing the time lengths measured by the means; a display means for displaying the contents of the storage means; and t-. (2) The display means is equipped with a printer.Claim 1: A relay means whose operating state changes based on the contents of the storage means; and a relay means connected to the relay means. 2. The online line utilization rate measuring device according to claim 1, characterized in that the device comprises: a traffic counter; (4) The relay means is configured to change its operating state when the storage time length of the storage means exceeds a predetermined value.
The online line utilization rate measuring device described in Section 1. (5) The online system according to any one of claims 1 to 4, wherein the determining means determines based on a difference in byte length between a data signal and a polling signal. Line utilization rate measuring device. (6) The online line utilization rate measuring device according to any one of claims 1 to 5, wherein the display means is a unit equipped with an LED ffi.