JPH03169197A - Display and recording system for waring signal - Google Patents

Abstract

PURPOSE:To display and record only an important waring signal even when a lot of faults are generated by selecting the group of the warning signals to be outputted from respective devices based on a priority order determined in advance, outputting the selected signal and executing the display recording the signal by the controller of a center. CONSTITUTION:When inputting signals (a)-(e) with the successively descending priority orders, only the signal (b) is turned ON at a time slot T1 and the signal (b) is outputted as an output signal (f) when the time slot T1 is finished. The warning signals (a) and (b) are simultaneously turned ON at time slots T2-T5 and in these warning signals (a) and (b), the priority order of the signal (a) is higher. Therefore, only the waring signal (a) is outputted at time slots T3-T6. Next, since all the warning signals (a)-(e) are turned OFF at a time slot T6, the output is also turned OFF. At time slots T7 and T8, only the warning signal (c) is turned On and since the other warning signal with the higher prioerity order is not turned ON although the priority order of the signal (c) is low, the warning signal (c) is outputted. Thus, only the important warning signal can be displayed and recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for displaying and recording alarm signals in a system in which a single device or a group of devices is used for alarming.

[Conventional technology]

Generally, the more complex a system made up of various devices, the more important is the support for the operation and maintenance of that system. In particular, it is important to transmit an alarm signal when a failure occurs, to perform recovery work, and to transmit and display an alarm signal to prevent a failure.

In the conventional alarm signal display/recording method, alarm signals are detected by each device that is a component of the system, aggregated by a management device or similar device that manages and controls the entire system, and handled by the system's operation and maintenance. Display a warning and notify the person. Specific alarm signals may vary depending on the system, but may include an abnormality in each device, a power outage, and an abnormality in transmission between devices.

Conventionally, the contents of an alarm signal collected by a management device of a center include the type of alarm (power outage, transmission abnormality, etc.), the time of occurrence, and the time of termination. Also, the information recorded was all or some of these. With this information, those who operate and maintain the system know the types of alarm signals and their occurrence conditions, understand the system status, and perform troubleshooting work.

[Problem to be solved by the invention]

In the conventional alarm signal display/recording method described above, there are multiple types of alarm signals detected by the device, and depending on the type of failure, multiple alarm signals may be output at the same time, or almost all alarm signals may be output. may be output. Since the operator determines the most important alarms and possible faults based on the types of these alarm signals and the time of their occurrence, this becomes a very complicated task when there are many types of faults to be output. was.

[Means to solve the problem]

The alarm signal display/recording method of the present invention is configured of at least one device connected to a management device, and displays/records alarm signals classified by fault content.
In the recording method, priorities are set in advance for the various types of alarm signals, and when only one type of alarm signal occurs within a predetermined time, that alarm signal is displayed or recorded, and when multiple alarm signals occur, the priority order is set in advance. Sometimes only the highest priority is displayed or recorded.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

As a simple example of the system configuration, FIG. 2 shows a block diagram consisting of three devices. Each of the three devices is connected by a transmission path, and the alarm signals detected by each device are collected, displayed, and recorded by the center management device via another transmission path. It is also possible to control each device from the center management device. In this configuration example, the alarm signal transmission path is separated from the transmission path that runs between each device, but it is not a separate transmission path that runs between each device. The alarm signal may be time-division multiplexed or frequency-division multiplexed with the main signal and transmitted to the center management device using the same transmission path. FIG. 1 is a block diagram showing a first embodiment of the present invention. Let the alarm signals output from one device 10 of each device group, which is an element of the system, be signals a, b-, c, d, and e, respectively. These alarm signals are input to the selector 20. Further, the output signal g of the timer 30 that outputs a pulse signal every predetermined time t is input to the selector 20. Priority orders among inputs are set in advance in the selector 20, and a signal selected according to the priority order is outputted in synchronization with the cycle of the signal g.

As an example, the priority of the alarm signal is set such that a has the highest priority, b, c
, d, and e, with the alarm signal e having the lowest priority. The output signal C when these signals are inputted as shown in FIG. 3 will be explained. In the time slot T1, only the signal b is onL, and the alarm signal b is output as the output signal f at the end of the time slot T1.

In time slots T2 to T5, alarm signals a and b
are onl, at the same time. Since alarm signal a has a higher priority among alarm signals a and b, only alarm signal a is output in the time slots from T3 to T6. Next, in the time slot T6, all of the alarm signals a to e are off, so the output is also off. In the time slots T7 and T8, only the alarm signal C is turned on and has a low priority, but since no other alarm signal with a higher priority is turned on, the alarm signal C is output.

FIG. 4 is a block diagram of a second embodiment of the present invention, in which a timer 30a is operated in synchronization with an alarm signal. In FIG. 4, an OR gate 40 that takes the logical sum of alarm signals a, b, c, d, and e is added, and the output thereof is applied to the timer 30a, thereby synchronizing the output g of the timer 30a with the alarm signal. The operation will be explained with reference to FIG. Since no alarm signal is generated until time slot T1, timer 30
The output g of a outputs a pulse with a period t. Also, the output at this time is in the OFF state. When the alarm signal b turns on within the next t seconds, the timer 30a is reset at the time of turning on,
The time slot of T2 will be shorter. When the alarm signal a turns on during the time slot T3, the output signal f outputs the alarm signal a during the time slots T4, 5, 6, and 7 due to the priority order. When the alarm signal C is turned on at the time slot T8, the timer 30a is reset again, and the time slot becomes the next time slot T9. In this example, timer 3
The period t of 0a is the maximum value of the detection time of each alarm signal, or
By setting the value slightly larger than the difference between the maximum value and the minimum value, if one fault occurs at a certain point and multiple alarm signals caused by it are turned on at the same time, the output signal f has a higher priority. only is output.

Note that this embodiment shows a case in which the priorities of the alarm signal groups are all ordered, but if there are two or more alarm signals with the same priority, the alarm signal group with the same priority is output as an output signal. You may. Further, although the alarm signal groups are made to correspond to separate signal lines, physically it is the same even if one signal line is used to input the alarm signals to the selector 20 in a time-sharing manner. Further, even when the selector 20 is not built in each device but is built in the center management device, the operation itself is the same, only that the device 10 and the selector 20 are physically separated.

〔Effect of the invention〕

As explained above, the present invention selects and outputs a group of alarm signals output from each device based on predetermined priorities, and displays and records them on a management device at a center.
Even when a failure occurs where a large number of alarm signals are output from one device, only the important alarm signals can be displayed and recorded. This has the effect of making operational work easier.

[Brief explanation of the drawing]

1 and 4 are block diagrams of the first and second embodiments of the present invention, FIG. 2 is a diagram showing an example of the system configuration of this embodiment, and FIGS. 3 and 5 are block diagrams of the first and second embodiments of the present invention. 2 is a time chart for explaining Example 2. DESCRIPTION OF SYMBOLS 10... Device, 20... Selector, 30.30a... Timer, 40... OR gate.

Claims (1)

[Scope of Claims] 1. An alarm signal display/recording method that is configured of at least one device connected to a management device and that displays and records alarm signals categorized by fault content, Priorities are set in advance for signals, and when only one type of alarm signal occurs within a predetermined time, that alarm signal is displayed or recorded, and when there are multiple alarm signals, only the one with the highest priority is displayed. An alarm signal display/recording method characterized by displaying or recording. 2. In the alarm signal display/recording method according to claim 1, when there are a plurality of alarm signals having the highest priority among the alarm signals generated within a predetermined time, all the alarm signals having the same priority are displayed or recorded. Features a warning signal display and recording method. 3. The alarm signal display/recording method according to claim 1, wherein the operation of a timer that determines a predetermined time for monitoring the alarm signal is started when any alarm signal is generated. .