JPH01258162A - Information transmission equipment - Google Patents

Abstract

PURPOSE:To reduce the load on a control processing part to give a uniform service to each channel by detecting an abnormal channel in accordance with the number of interrupts in a certain time to stop the interrupt handling for a certain time. CONSTITUTION:The number of interrupts in the certain time is detected by a line abnormality monitor processing part 8 and abnormal states of channels are judged by this number, and a transmission/reception data processing circuit 1 is stopped for the certain time to stop the interrupt handling with respect to the channel decided to be in the abnormal state. That is, an information transmission equipment detects the abnormal state of the channel in accordance with the number of interrupts in the certain time to stop the interrupt handling of the abnormal channel for the certain time. Thus, trouble is prevented that the processing load of the trouble channel is increased in a control processing part 6 and has an influence upon processings of the other normal channels to disable the uniform service to each channel when the channel falls into the trouble state and the interrupt from the transmission/reception data processing circuit 1 frequently occurs.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information transmission device in which one control processing section controls information transmission of a plurality of channels.

[Conventional technology]

FIG. 4 is a configuration diagram showing this type of conventional information transmission device. In the figure, 1 is provided corresponding to each of a plurality of channels, and data handling equipment to be transmitted on the line of each channel is provided. Transmit/receive data processing circuits 2 that perform input, etc. are connected to each of the transmit/receive data processing circuits 1, and input interrupt factors that occur more frequently than the corresponding transmit/receive data processing circuits 1. An interrupt processing section, 3 is a timer control circuit that generates an interrupt at a predetermined period, and 4 is this timer control circuit 3.
A timer interrupt processing unit 5 handles frequently occurring interrupts, and an inter 7 ASK is connected to each of these interrupt processing units 2 and the timer interrupt processing unit 4 to temporarily suspend interrupt factors that occur asynchronously. , 6 is a control processing unit that controls the line state and determines the next operation and starts it based on the interrupt factors sequentially inputted from this interface.
Reference numeral 7 denotes a transmission processing section that creates data to be actually transmitted by activation of the control processing section 6.

Next, the operation will be explained. When data etc. are transmitted on the line of any channel, a data reception interrupt occurs in the forward/receive data processing circuit 1 associated with that channel, and the interrupt processing unit 2 connected to it is activated. be done. The activated interrupt processing unit 2 extracts interrupt factors such as received data from the transmission/reception data processing circuit 1 and sends them to the interface skinny 5), and the interface skinny L-5 temporarily transmits them. Hold. The state control processing unit 6
A-key 5 dequeues the asynchronously queued interrupt factors and determines the next operation according to the current line state. For example, in the case of transmitting the next data, the transmission processing section T is activated and the data is actually transmitted onto the line.

[Problem to be solved by the invention]

Since the conventional information transmission device is configured as described above, if one of the channels is in a faulty state and interrupts from the transmission/reception data processing circuit 1 occur frequently, the control processing unit 6 There was a problem that the processing load of υ was large, which affected the processing of other normal channels, making it impossible to provide equal service to each channel.

This invention was made in order to solve the above-mentioned problems, and when one of the channels becomes a failure state, the influence of the failure on the processing of other normal channels is reduced, and The object of the present invention is to obtain an information transmission device capable of providing equal service to each channel.

[Means to solve the problem]

The information transmission device according to the present invention detects the number of interrupts that occur within a certain period of time, determines the abnormal state of the channel depending on the number of times, and stops interrupt processing for a certain period of time for the channel determined to be in the abnormal state. It is something that makes you

[Effect]

The information transmission device according to the present invention detects an abnormal state of a channel based on the number of interrupts that occur within a certain period of time, and reduces the load on the control processing unit by stopping interrupt processing of the abnormal channel for a certain period of time. Allows equal service for each channel.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 is a transmission/reception data processing circuit, 2 is an interrupt processing section, 3 is a timer control circuit, 4 is a timer interrupt processing section, and 5
6 is an interface skinny, 6 is a control processing section, and 1 is a transmission processing section, which are the same or equivalent parts to those of the conventional system denoted by the same reference numerals in FIG. 4, and detailed explanations thereof will be omitted. Further, a line abnormality monitoring processing unit 8 is connected between each transmission/reception data processing circuit 1 and each interrupt processing unit 2, and detects an abnormal state of the line based on the number of interrupt occurrences within a certain period of time. , 9 is a line abnormality time measurement processing unit which is connected between the timer control circuit 3 and the timer interrupt processing unit 4 and performs a process of measuring time for the line abnormality monitoring processing unit 8 to detect a line abnormality. 0 Next, I will explain the operation. ζζ, FIG. 2 is a flowchart showing the operation procedure of the line abnormality monitoring processing section 8, and FIG. 3 is a flowchart showing the operation procedure of the line abnormality time measurement processing section 9.

When data etc. are transmitted on the line of any channel, the transmission/reception data processing circuit 1 associated with that channel generates a data reception interrupt. This interrupt activates the corresponding line abnormality monitoring processing unit 8, and the activated line abnormality monitoring processing unit 8 counts up the count value of the corresponding interrupt number check counter (step 5TI).
). Here, the count value of the frequency check counter is cleared at regular time intervals by the process of the line abnormality time measurement processing section 9, as will be explained later.

Next, the line abnormality monitoring processing section 8 reads the count value of the interrupt number check counter and compares it with a predetermined number of abnormal interruptions (step 5T2). As a result, if the count value is less than or equal to the number of abnormal interrupts, the line abnormality monitoring processing unit 8 determines that the channel is in a normal state and ends the process, and the corresponding interrupt processing unit 2 Received data processing circuit 1) extracts interrupt factors such as received data and enqueues them to Inter 7 A/-5.

Furthermore, as a result of the comparison, if the counted value exceeds the number of abnormal interrupts, the line abnormality monitoring processing section 8 determines that an abnormality has occurred in the line state of that channel, and the corresponding transmission/reception data processing circuit 1 is stopped (step ST3), and the process ends. As a result, interrupts from the line of the channel in the abnormal state will not be processed for a predetermined period of time thereafter.

The line abnormality time measurement processing unit 9 is activated by the timer control circuit 3 which generates interrupts at a predetermined period, and first clears the counts of all interrupt count check counters (step ST4). Therefore, the interrupt count check counter is cleared at the interrupt cycle of the timer control circuit 3, and each line abnormality monitoring processing section 8 clears the count value of the interrupt count check counter within this interrupt synchronization by a predetermined value. If the number of abnormal interrupts exceeds the specified number of abnormal interrupts, it is determined that the channel is in an abnormal state.

Next, the line abnormality time measurement processing unit 9 determines for each channel whether or not the transmitting/receiving data processing circuit 1 is stopped (step ST5), and if it is stopped, the stopping time is determined in advance. It is determined whether the set time has elapsed (step ST6). As a result of the determination, if the stop time has exceeded the set time, the transmission/reception data processing circuit 1 is canceled (step 5T7). This prevents the sending/receiving data processing circuit 1, which has been stopped due to the determination that the corresponding channel is abnormal, from being permanently stopped even after the line status has returned to normal. ing. The processing of steps ST5 to ST7 is repeated until it is detected in step ST8 that all channels have been confirmed. When it is detected in step ST8 that the confirmation of all channels has been completed, the process is ended and the timer control circuit 3 waits until the next interrupt occurs.

In the above embodiment, each monitoring time was detected by an interrupt from the timer control circuit, but it is also possible to detect the monitoring time by the program using the program effective time without using the timer control circuit. In many cases, the same effects as in the above embodiment can be achieved.

[Interference with invention]

As described above, according to the present invention, an abnormal channel is detected based on the number of interrupts occurring within a certain period of time, and the interrupt processing of the abnormal channel is stopped for a certain period of time. This has the effect of reducing the load on other channels, reducing the influence of the abnormal state on other channels even if a channel is in an abnormal state, and providing an information transmission apparatus that can provide equal service to each channel.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an information transmission device according to an embodiment of the present invention, FIGS. 2 and 3 are flowcharts showing its operating procedure, and FIG. 4 is a configuration diagram showing a conventional information transmission device. be. 1 is a transmission/reception data processing circuit, 2 is an interrupt processing section, 3 is a timer control circuit, 4 is a timer interrupt processing section, 6 is a control processing section, 8 is a line abnormality monitoring processing section, 9 is a line abnormality time measurement processing section. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] In an information transmission device in which one control processing unit controls information transmission of a plurality of channels, the number of interruptions that occur within a certain period of time for each channel is detected, and the detected number of interruptions is a predetermined value. An information transmission device characterized in that when the channel is determined to be in an abnormal state, the channel is determined to be in an abnormal state, and interrupt processing from the channel determined to be in the abnormal state is stopped for a certain period of time.