JPS5829530B2 - information display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information display device suitable for intensively monitoring the occurrence of abnormal phenomena such as failures in a large number of devices in various types of equipment such as plant equipment and process equipment.

Conventional display devices of this type generally have a display panel with a concentrated array of failure indicator lamps for each of the devices to be monitored, and when a failure occurs in each device, a corresponding indicator lamp is displayed. I was trying to turn it on.

In such conventional devices, the failure detection device and indicator lamp of each device must be connected individually.
The disadvantage is that the configuration of the device is complicated and large, and the number of man-hours required for wiring is large, resulting in high manufacturing costs.

In addition, the order in which failures occur in each device can be detected by the order in which the indicator lamps are lit, but when there are many indicator lamps, it is not practical to manually determine and memorize the order in which they are lit. Therefore, it is extremely difficult to detect the order in which failures occur in conventional devices.

Since the devices constituting one piece of equipment are related to each other, knowing the order in which abnormal phenomena such as failures occur in each device is extremely effective in investigating the causes of failures.

SUMMARY OF THE INVENTION In order to eliminate the drawbacks of the conventional devices as described above, it is an object of the present invention to provide an information display device that has a simple configuration and is capable of displaying phenomena in a large number of monitored objects in the order in which they occur.

The present invention provides an apparatus for displaying phenomena occurring in a large number of monitoring targets, in which the large number of monitoring targets are periodically scanned, the presence or absence of a phenomenon occurring in each monitoring target is detected, and when the occurrence of a phenomenon is detected, information indicating the monitoring target where the phenomenon occurred, unconfirmed information on the information, and information on the continuation of the phenomenon,
A display registration memory for registering information to be displayed, and a means for writing to vacant addresses in order from the first address, and a phenomenon registration memory, in which information indicating the content of the phenomenon occurring in the pre-acceptance monitoring target is registered in advance. Then, the information indicating the monitoring target stored in the display registration memory is sequentially read out, and based on the read information indicating the monitoring target, information indicating the content of the phenomenon occurring in this monitoring target is selectively retrieved from the phenomenon registration memory. display means for displaying the unconfirmed information on a display device; means for adding an unconfirmed mark to the information displayed by the display means based on the unconfirmed information; and clearing the unconfirmed information by operating a confirmation button; The above object is achieved by providing a means for confirming the continuation of the phenomenon of interest and, when the occurrence of the phenomenon disappears, erasing each piece of information regarding the object to be monitored from the display registration memory.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention shown in the drawings will be described.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In this figure, 1 to 1 are status input signals indicating the status of the monitoring target, and 1 is a phenomenon occurrence detection device for detecting the occurrence of a phenomenon from changes in the status input signal of each monitoring target and temporarily storing it. .

This detection device 1 includes three registers LL12.L12. and 13 are provided.

Each bit of these registers is assigned to a monitoring target on a one-to-one basis.

Then, the status signals II to In transmitted from each monitoring target are
is read by the inclination of registers 11 and 12 alternately at predetermined monitoring time intervals.

Therefore, registers 11 and 12 store the current state of the status signal and the state at the time of reading immediately before the current time.

Therefore, the phenomenon occurrence detection device 1 has registers 11 and 12.
This is done only if the contents of each bit of the state signal are compared with each other and it is detected that the status signal has changed from 0'' to 1'' between the current time and one point before the current time. An operation is performed to write a signal "°1" indicating that a phenomenon has occurred in the bit of the register 13 corresponding to the bit in which a change has been detected.

Further, 2 is a display control device that periodically reads the contents of each bit of register 3 and performs control and processing to display the occurrence of a phenomenon, and 3 is a display control device that registers information indicating the monitored target where the phenomenon has occurred for display. 4 is a display registration memory having a plurality of storage areas for storing information; 4 is a phenomenon registration memory in which information indicating, for example, text, the content of a phenomenon occurring in each monitoring target is registered in advance; 5 is a display registration memory 3; A organizing memory 6 has the same storage area and is used to organize the information stored in the display registration memory, and 6 is a display device such as a plasma display or a CRT display that displays the occurrence of a phenomenon.

Furthermore, 7 is a confirmation operation button that is operated to confirm the content displayed on the display device, 8 is an organization operation button that is operated when arranging the displayed content, and 9 and 10 are the display screen buttons of display device 6. This is a screen shift operation button that is used to move pages up and down.

31 attached to the display registration memory 3 is this memory 3.
The maximum count value of this counter 31 determines the storage area of the memory 3.

32 is a readout area counter that specifies the range of the readout storage area of the display registration memory 3.

A write address counter 51 is attached to the memory 5 and designates a write address of this memory.

In such an apparatus of the present invention, the phenomenon occurrence detection device 1 receives a state input signal If from a monitoring target (not shown) which indicates "0'" when no phenomenon occurs and "1" when a phenomenon occurs. In is periodically read into input registers 11 and 12 alternately at predetermined time intervals.

After reading the input signal, both registers 11 and 1
The contents of the corresponding bits of 2 are compared with each other, and the presence or absence of a change between the signal read at the previous point and the signal read at the present time is checked, and a change from "0" to ``1'' is detected. When such a change is detected, a "1" signal indicating that a phenomenon has occurred is written in the bit of the register 13 corresponding to the bit in which such a change is detected.

Therefore, each bit of the register 13 indicates the state of the corresponding monitoring target, and is +097 when no phenomenon such as a failure occurs, and becomes '1'' when a failure occurs.

The display control device 2 periodically scans all bits of the register 13 in the phenomenon occurrence main device 1 one by one at regular time intervals, and when detecting a bit whose content indicates ff1t+, the display control device 2 selects the corresponding monitoring target from the bit position. , a control flag hit is attached to the obtained monitoring target number, and the result is written into the display registration memory 3 in the format shown in FIG.

The write address in the display registration memory 3 in this case is specified by the address counter 31.

This counter 31 initially indicates the start address of the display registration memory 3, and is given a step signal from the control device 2 so as to count up by 1 each time one piece of information is written.

The count value of the counter 31 at each point in time is registered in the memory 3 and indicates the amount of information.

Therefore, phenomena that occur at time intervals longer than the cycle in which the control device 2 scans the register 13 are sequentially registered in the display registration memory 3 at empty addresses starting from the first address in the order in which they occur.

A plurality of phenomena that occur within one scanning period are registered in the display registration memory 3 in the order of the monitoring target number.

In this way, the control device 2 reads the bit indicating 1'' in the register 13, registers the monitoring target in which a phenomenon such as a failure has occurred in the display registration memory 3, and at the same time reads the contents of the bit in the register 13 again. Clear to "O" in case the same phenomenon occurs.

After completing the registration of the monitoring target where the phenomenon occurred in this way, the control device 2 detects the address where the last information was registered in the memory 3 from the indicated value of the write address counter 31 at that time, and The group number of the storage area including this address is set in the read area counter 32, and the monitoring target numbers registered at each address within the set storage area of the memory 3 are sequentially read out.

Then, based on each monitoring target number read out, in advance,
Information indicating the details of phenomena such as failures corresponding to the monitoring target is selectively read from the phenomenon registration memory 4 in which information indicating the details of phenomena such as failures occurring in each monitoring target is registered, and the information is displayed on the display device 6. be communicated and displayed.

As a result, the content of the most recently occurring phenomenon is displayed on the display device 6.

In the case of the embodiment shown in FIG. 5, the display device 6 has eight columns of display areas, as shown in FIG. 3, and therefore can simultaneously display phenomena such as failures occurring in eight monitoring targets. Can be done.

Therefore, the entire storage area of the display registration memory 3 is equally divided into a plurality of groups such that the number of addresses included in one group is eight.

The 1st start area counter 32 is set to N according to the number of divisions N.
It consists of a reversible counter.

This counter 32 normally indicates an integer value obtained by dividing the current indicated value of the write address counter 31 by eight.

That is, the counter 32 is set to 0 when the counter 31 indicates a value of 0 to 7, and 1.16 to 23 when the indicated value of the counter 31 is between 8 and 15.
The value is 2 between the two.

This is nothing but the number of groups into which the storage area of the memory 3 is evenly divided.

Now, for example, suppose that the monitoring target that most recently caused the phenomenon is written to address 34 in memory 3, then the counter 3
1 already indicates address 35 in preparation for the next registration, and counter 32 indicates 4 indicating group 4.

After completing the latest registration, the control device 2 sequentially reads out the information indicating the monitoring targets to be displayed registered at addresses 32 to 39 of the memory 3 based on the instruction value 4 of the counter 32, and displays information on each of the read monitoring targets. The contents of the corresponding occurrence phenomenon are read from the memory 4 and displayed on the display device 6.

At this time, the display screen of the display device 6, as shown in FIG. to 4th stage, that is, from address 32 of memory 3 to 3
Information indicating the content of the phenomenon that occurred in the monitoring target registered at address 5 is displayed, for example, in text.

At the beginning of each display is a red stamp indicating that this is a newly occurring phenomenon.

The lower four display areas are for displaying the monitoring targets registered at addresses 36 to 39 of the memory 3, but in this case, since they have not been registered yet, no examples are displayed and they are blank.

In this case, it is necessary to look back at the display screen to check whether a new phenomenon has occurred.

In this case, when the upper shift operation button 9 is operated only once, the control device 2 adds only one subtraction pulse to the counter 9.

As a result, the counter 32 changes the indicated value from 4 to 3.

Based on the new instruction value 3 of the counter 32, the control device 2 moves from address 24 to 3, which is the area of group 3 in the memory 3.
The monitoring objects registered up to address 1 are sequentially read out, and information indicating the contents of the phenomenon occurring in the read monitoring objects is selectively read from the phenomenon registration memory 4 and displayed on the display device 6.

As a result, the screen of the display device 6 changes to the screen with screen number 3 as shown in FIG. 3B.

In this case, addresses 24 and 2 of memory 3 on the display screen
1st and 2nd row from the top for information registered at address 5
The information displayed in the display area in the first row is old information whose display has already been confirmed, so the red stamp at the beginning has disappeared.

Since the information at other addresses 26 to 31 in group 3 of memory 3 is new, unconfirmed information, the information displayed in the display area from the third row onwards is marked with a red stamp at the beginning.

In this way, when there is a large amount of display information, the information is divided into multiple screens and displayed.

In order to confirm the newly occurring phenomenon displayed on the screen with screen number 3, the operator operates the confirmation button 7 and performs a confirmation operation. The contents of the confirmation bit ACK of each information registered within the range of storage area 3 (from address 24 to address 31) are set to 1”
Rewrite from to 'O''.

As a result, the red stamp attached to the beginning of the new information disappears.

At the same time, the control device 2 registers the state of the input signals II to In in the memory 3 of the register 11 or 12 of the phenomenon occurrence detection device 1 at the time when the check operation is performed. The content of the bit corresponding to the monitored target is checked to confirm whether the phenomenon continues at the present time.

If the phenomenon continues at this point, the status display pin 8O8 (see Figure 2) of the information registered in register 3 is left as "1", and the phenomenon is short-lived. If the phenomenon has already disappeared due to
Processing to rewrite from ' to 0'' is performed.

Therefore, after performing such a confirmation operation, the contents of the control flag bits ACK and SGS of the information indicating the monitoring target registered in the memory 3 will be ``1'' when they were first registered. is “0”, 1” or O
",O".

Information indicating a monitored target for which the content of flag bit SO8 is '0' means that the phenomenon that occurred in the monitored target has already disappeared and the normal state has returned to normal. The display of information indicating the contents will be erased.

If the content of the flag bit SGS is 1'', the display continues.

The screen in this state is shown in FIG. 3C.

The display area in the fifth row of FIG. 3C is blank, but the phenomenon displayed here has already disappeared at the time of the confirmation operation.

Next, when confirming the phenomenon displayed on the screen number 4, the down shift button 10 is operated.

As a result, the indicated value of the counter 32 returns to 4, and the screen of the display device 6 becomes the screen with screen number 4.

When the screen of the display device 6 returns to the screen of screen number 4 in this way, if the confirmation button γ is operated, the memory 3 displayed here by the display control device 2 will be displayed in the same way as in the previous case.
When the contents of the flag bit ACK of the information registered in the monitoring target and indicating the monitoring target are rewritten from 1'' to 0'', the contents of the flag bit SGS are also rewritten according to the continuation state of the phenomenon in the corresponding monitoring target.

Now, if we assume that the phenomenon displayed on the second row among the phenomena displayed on the screen number 4 has already disappeared at the time of the confirmation operation, the screen number 4 after the confirmation operation will be 3
It changes as planned.

As is clear from this third diagram, the red stamp indicating that the information is new at the beginning of all displayed information disappears, and the information displayed on the second row is erased, leaving this display area blank.

When changing the display screen to a screen with a smaller number or a screen with a larger number, this can be done freely by operating the up shift button 9 or the down shift button 10.

However, when an operation is performed to confirm the phenomenon displayed on the screen of the display device 6, the display of the phenomenon that has disappeared is erased.
Although the corresponding display area becomes blank, the information indicating the corresponding monitoring target still remains in the memory 3 without being erased.

However, such information is not only unnecessary, but also wastefully occupies the limited storage area of the memory 3, so it is desirable to erase it in order to make effective use of the storage area of the memory 3.

In order to erase and organize such unnecessary information in the memory 3, a sorting operation button 8 is provided in the present invention.

When this organization operation button 8 is operated, the display control device 2 performs the following processing.

That is, the information registered in the memory 3 is read out sequentially from the first address, and the contents of the flag bits ACK and SGS are checked.

Then, only the information whose contents of both flag bits are "1" are sequentially written from the first address of the organizing memory 5 to the vacant addresses.

If there is information in which the contents of Frabit ACK and SO8 are both 0'' on the way, this information is skipped and the next information is written in the following address of the memory 5.

When such processing is performed on all the information registered in the memory 3, only the information indicating the monitoring target where the phenomenon continues is finally written in order from the first address to the memory 5, The information indicating the disappeared monitoring target will be deleted.

Memory 5 of all the information registered in memory 3 in this way
When the transfer is completed, the indicated value of the write address counter 51 attached to the memory 5 becomes the total amount of registered information, and this value is transferred to the write address counter 31 of the memory 3 and written to the memory 5 at the same time. All information is transferred back to memory 3 as is without changing the order.

As a result, in memory 3, only the information indicating the monitoring targets that need to be displayed and where the phenomenon is still continuing is organized and registered without changing the order, and the monitoring targets that have been deleted because they do not need to be displayed are registered in the memory 3. The unregistered storage area in the memory 3 increases by the number of pieces of information indicating , and it is possible to prepare for registration of a monitoring target where a new phenomenon has occurred.

As is clear from the above description, in the present invention, the monitoring target whose occurrence of a phenomenon has been detected by the phenomenon occurrence detection device 1 is registered in the display registration memory 3 in the order in which the phenomenon occurred; The monitoring targets are sequentially read out, and based on this, the content of the corresponding phenomenon is read out from the phenomenon registration memory 4 which previously stores information indicating the content of the phenomenon occurring in each monitored target, and is displayed on the display device 6. It is possible to display the phenomena that occur in the monitored target according to the order in which they occurred.

In addition, since the display of phenomena occurring in a large number of monitored targets is displayed on a common display device under the control of the display control device 2, conventional displays were provided with display lamps or the like corresponding to the monitored targets. Compared to the display device shown in FIG.

Therefore, the present invention is extremely useful when used as a display device for monitoring and control equipment for plant equipment, process equipment, etc.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram showing the configuration of an embodiment of the present invention;
FIG. 2 is a diagram showing the format of the information word used in the present invention, and FIGS. 3A to 3D are diagrams showing the state of the display screen in each state in the present invention. 1: Phenomenon occurrence detection device, 2: Display control device, 3: Display registration memory, 4: Phenomenon registration memory, 5: Organizing memory, 6
: Display device, 7: Confirmation operation button, 8: Organizing operation button, 9, 10: Screen shift operation button.

Claims (1)

[Claims] 1. In a device that displays phenomena occurring in a large number of monitoring targets, the large number of monitoring targets are periodically scanned,
Detects whether or not a phenomenon has occurred on each monitoring target, and registers information that should be displayed when a phenomenon is detected, including information indicating the monitoring target where the phenomenon occurred, unconfirmed information on the information, and continued information on the occurrence of the phenomenon. means for sequentially writing data into empty addresses starting from the first address of a display registration memory for storing information; a phenomenon registration memory in which information indicating the contents of phenomena occurring in each of the monitoring targets is registered in advance; and the display registration memory. sequentially reads information indicating the monitored target stored in the memory, and based on the read information indicating the monitored target, selectively reads information indicating the content of the phenomenon occurring in the monitored target from the phenomenon registration memory and displays it on the display device. a display means for displaying, a means for adding and displaying an unconfirmed mark to the information displayed by the display means based on the unconfirmed information, and clearing the unconfirmed information by operating a confirmation button; and a continuation of the occurrence phenomenon of the monitored object. An information display device comprising: a means for confirming the occurrence of the phenomenon; and, when the phenomenon disappears, erasing each piece of information regarding the monitored object from the display registration memory.