JPS6031347A - System for detecting abnormal congestion state - Google Patents

Abstract

PURPOSE:To detect the abnormal congestion state of an exchange with a simple circuit constitution by judging said state based on the number of registration of cue for task start. CONSTITUTION:When the exchange starts entering congestion and the number of registration of cue provided in a main storage memory 2 reaches a prescribed value, a central processing unit 1 transmits a set pulse to an input terminal 3b of a controller 3 to set flip-flop 11. Then an AND circuit 12 is brought into an active state, a pluse outputted from an output terminal of an oscillating circuit 13 is fed to an abnormal congestion detection counter 14, which starts counting of the pulse supplied from an oscillating circuit 13. When the congestion state of the exchange continues for a prescribed time, an output terminal QD of the abnormal congestion detection counter 14 is brought into ON state and transmits a signal of abnormal congestion state via an output terminal 3c.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to an automatic detection system for abnormal congestion conditions in an electronic exchange.

(Description of Prior Art) In the past, abnormal congestion conditions in electronic exchanges were detected by monitoring the usage efficiency of the central processing unit that controlled the electronic exchange, and uniformly making judgments based on this efficiency. Even if the system is not involved in an abnormal conflict, it is judged as an abnormal conflict, which has the disadvantage of resulting in a decline in service. In addition, in order to observe the usage efficiency of the central processing unit,
The monitoring circuit itself had to be as fast as the central processing unit, and had the disadvantage of becoming complex.

The present inventor completed the present invention by noting that the above-mentioned drawbacks can be overcome by configuring a monitoring circuit consisting of a queue registration number display means, a counting means, and a time limit means in the control device of the electronic exchange. I ended up doing it.

[Purpose of the invention]

The present invention avoids complicating the circuit and accurately determines the abnormal axle status of the exchange by determining the abnormal axle status of the exchange based on the number of queue registrations performed to start task processing when a change in call status is detected. The purpose is to provide a detection method that can improve the service provided to users.

[Features of the invention]

The present invention provides an abnormal axis for an electronic switching system using a storage program control system, which is equipped with a central processing unit and a main storage device, and is configured to detect a change in call status and execute switchboard control via a queue processing means. In the ring state detection method, the central processing unit is configured to send a signal when the number of waiting calls registered in the queue processing means reaches a certain value, and during the period during which this signal is sent, The apparatus comprises a means for counting clock pulses and a means for resetting the count value of this means at regular time intervals, and the output of the counting means is taken into the central processing unit and used as a detection output of a defective shaft wheel state. The present invention is characterized in that the abnormal shaft wheel condition of the exchanger is properly determined by the following.

[Explanation based on examples]

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

FIG. 1 is a block diagram of a storage program control type electronic exchange of a device according to an embodiment of the present invention, and FIG. 2 is a block diagram of an abnormal shaft wheel detection circuit in a control device according to a first embodiment of the present invention. As shown in FIG. 1, the storage program control type electronic exchange of the apparatus according to the embodiment of the present invention includes a central processing unit 1, input terminals 3a and 3b for receiving input signals from the central processing unit 1, and the central processing unit 1, a control device 3 having an output terminal 3c for transmitting an output signal to the central processing device 1, and a field-light shaft wheel detection circuit 10; It is made up of.

Also, an abnormal traffic detection circuit 10 built in the control circuit 3
As shown in FIGS. 2 and 3, input terminals 3a and 3b receive output signals from the central processing unit 1.
A flip-flop 11 connected to the flip-flop 11, an AND circuit 12 that receives the output signal of the flip-flop 11, and an oscillation circuit 13 that transmits pulses to the AND circuit 12.
An abnormal shaft lateral detection counter 14 receives an output signal from the AND circuit 12, detects an abnormal shaft wheel, and counts the abnormal shaft wheel; and a time limit circuit 15 receives pulses from the oscillation circuit 13 and counts the abnormal shaft wheels.
and an output terminal 3c that outputs the output from the abnormal shaft wheel detection counter to the central processing unit in stages.

Furthermore, the output 15a of the time limit circuit 15 is connected to the abnormal axle wheel detection counter 14 and its own clear terminal.

Next, the operation of the apparatus of this embodiment configured as described above will be explained.

In FIGS. 1 and 2, the central processing unit 1 registers a queue in the main memory 2 and executes a waiting process. The central processing unit 1 sequentially monitors the number of registered queues, and if it is below a certain value, sends a reset pulse to the input terminal 3a of the control unit 3, and the flip-flop 11 is always in a reset state. As a result, the AND circuit I2 is not activated and the pulse output from the oscillation circuit 13 is not supplied to the abnormal shaft wheel detection counter 14, and the abnormal shaft wheel detection counter 14 maintains its initial state.

When the exchange begins to spin and the number of queues registered in the main memory 2 reaches a certain value, the central processing unit 1 sends a set pulse to the input terminal 3b of the control unit 3 to set the flip-flop 11. state. As a result, the AND circuit 12 becomes active, and the pulse output from the output terminal of the oscillation circuit 13 is detected by the abnormal shaft wheel detection counter 1.
4, and this abnormal shaft wheel detection counter I4 starts counting the pulses supplied from the oscillation circuit 13. As a result, when the axle condition of the exchanger continues for a certain period of time, the output terminal QD of the abnormal axle wheel detection force link 14 turns on.
A signal indicating the state of the field shaft is transmitted to the central processing unit 1 via the output terminal 3c.

Note that if the number of registered queues in the main memory 2 becomes less than a certain value again due to the execution of a task, the central processing unit 1 again outputs the input terminal 3a of the abnormal axle wheel detection circuit 10.
By sending out the reset I pulse to set the flip-flop 11 to the reset 1~ state, the active state of the AND circuit 12 is canceled and pulse counting of the defective shaft wheel detection counter 14 is stopped.

If the flip-flop 11 is not set again after this, the field lightning wheel detection counter 14 will continue to maintain its state.
The output terminal 15a of the timer circuit 15, which constantly counts the pulses output from the output terminal of the oscillation circuit 13, is periodically turned on, and the abnormal shaft wheel detection counter 14 is cleared at regular intervals, so that abnormal congestion is detected. A light state is not detected by the accumulation of the field lightning shaft detection force tsunku 14.

FIG. 3 is a block diagram of an apparatus according to a second embodiment of the present invention.

In this example, the output of the abnormal shaft detection counter 14 is the terminal Q.
It is configured to be taken out from the A-QD in stages and transmitted to the central processing unit 1 through terminals 30 to 3f.

The other configurations are similar to the example shown in FIG.

With this configuration, the central processing unit can know the status of the abnormal shaft wheel step by step, so it can execute a processing program suitable for each step and provide optimal service.

〔Effect of the invention〕

As explained above, the present invention can accurately detect an abnormal shaft wheel state of a switch based on the number of queues registered for starting a task, and can accurately detect it with a simple circuit configuration. This has an excellent effect on improving services.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a storage program control electronic switching system according to an embodiment of the present invention. FIG. 2 is a block diagram of the abnormal shaft wheel detection circuit of the control device according to the first embodiment of the present invention. FIG. 3 is a block diagram of an abnormal shaft wheel detection circuit of a control device according to a second embodiment of the present invention. 1...Central processing unit, 2...Main memory, 3...
-Control device, 10... Abnormal shaft wheel detection circuit, 11...
Flip-flop, 12...AND circuit, 13...
Oscillation circuit, 14...Abnormal shaft wheel detection counter, 15...
・Timed circuit. Patent Applicant NEC Corporation Representative Patent Attorney Takaatsu Ide 1 Figure 2 Figure 3 [21

Claims (1)

[Scope of claims] In the abnormal congestion state detection method of the exchange, the central processing unit is configured to transmit a signal when the queue processing means number and the number of registered waiting calls reach a certain value, and this signal is transmitted. comprising means for counting chronochronomarus during a period of time, and means for resetting the counted value of this means at regular intervals;
An abnormal congestion state detection method characterized in that the detection output is an abnormal congestion state.