JP5056128B2 - Alarm display device - Google Patents

Description

  The present invention relates to an alarm display device. More specifically, the alarm information indicates whether there is an abnormality in a measurement signal based on the magnitude relationship of the measurement value of the measurement signal with respect to a preset setting value used in a measuring instrument or a process control system. The present invention relates to an improvement of an alarm display device for displaying.

  A paperless recorder using a two-dimensional display instead of a recording paper is configured to display a change state of a measurement signal in a graph with a two-dimensional display such as a liquid crystal display as a recording paper. Conceptually, the measurement signal is digitized and stored in a memory, the measurement data stored in the memory is read out, and the state of change with the passage of measurement time is graphically scrolled and displayed on the two-dimensional display. .

  Specifically, the measurement signals of a plurality of measurement systems are digitized with, for example, a sampling period TS and stored in a memory, and the measurement data stored in this memory is sequentially read out with a display period TD (> TS) for each measurement system. The maximum value and the minimum value of the measurement data within the display period TD are graphically displayed on the two-dimensional display as a line segment for each measurement system. An example of such a paperless recorder is disclosed in Patent Document 1.

Japanese Patent Laid-Open No. 2001-21385

  One of the usage forms of such a paperless recorder is an alarm display screen as shown in FIG. In FIG. 6, the display screen of the two-dimensional display is divided into a plurality of areas in a matrix, and measurement channels 1 to 50 are assigned to the respective areas. Predetermined alarm set values such as an upper limit value and a lower limit value for determining whether each measurement value is a normal value or an abnormal value are set in each measurement channel 1-50.

  If the measured value becomes higher or lower than the alarm set value, it is determined that the measured value of the measurement channel indicates an abnormal value, and the display form of the display area of the corresponding measurement channel is changed to another measurement channel. Alarm display is performed differently from the display area. In the display example of FIG. 6, the areas of the measurement channels 7, 14, 28, 32, and 46 that are shaded are displayed in red as an alarm state, for example, and the other measurement channel areas are in green as a normal state, for example. It is displayed.

  By the way, in a plurality of measurement channels, there are cases where important measurement channels with high priority that must be dealt with first are mixed when a plurality of measurement channels simultaneously enter an alarm state.

  However, according to the conventional display form as shown in FIG. 6, since the plurality of measurement channels in the alarm state are uniformly displayed in red, the importance of the alarm of each measurement channel is identified from the display screen. It is difficult.

  The present invention pays attention to such conventional problems, and its purpose is to provide an alarm display device that can accurately identify the importance of each of the plurality of measurement channels in the alarm state from the display screen. There is to do.

The invention of claim 1 which achieves such a problem,
The display screen of the two-dimensional display is divided into a plurality of areas so as to correspond to a plurality of measurement channels, and when the measurement value is determined to be abnormal, the display area of the corresponding measurement channel is selectively displayed as an alarm , In the alarm display device configured to change the display form of the display area of the measurement channel according to the set importance of the alarm,
The size of the display area of the measurement channel is varied according to the importance of the alarm, and each display area is directed to a predetermined direction for each importance level according to the priority setting within the same importance level. The measurement channel is arranged .

The invention of claim 2 is the alarm display device according to claim 1 ,
It is characterized in that the saturation or brightness of the display area of each measurement channel is made different according to the importance of the alarm.

The invention of claim 3 is the alarm display device according to claim 1 or 2,
When an alarm occurs, the display area of the corresponding measurement channel is enlarged and displayed.

The invention of claim 4 is the alarm display device according to claim 3,
On the enlarged display screen, at least one of a comment regarding a treatment to be performed when an alarm is generated and an elapsed time since the alarm is generated is displayed.

The invention of claim 5 is the alarm display device according to claim 3 or claim 4 ,
When a plurality of measurement channels are in an alarm state at the same time, important measurement channels with high priority that must be dealt with first are enlarged and displayed.

  As a result, the importance of the alarm of each of the plurality of measurement channels in the alarm state can be accurately identified from the display screen, and an appropriate response can be taken when an alarm occurs.

Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a specific example of an alarm display screen according to the present invention. In FIG. 1, the display screen of the two-dimensional display is divided into a plurality of regions so as to correspond to a plurality of measurement channels, but the size of the display region of the measurement channel differs depending on the importance of the alarm. In the example of FIG. 1, the alarm severity levels are classified into four stages from the highest level 1 to the lowest level 4, and the alarm severity levels of the measurement channels 1 to 50 are assigned as follows. Yes.
Importance level 1: Measurement channel 1, 41, 7
Importance level 2: Measurement channels 21-30
Importance level 3: Measurement channels 31-40
Severity level 4: remaining measurement channels

  In the display screen example of FIG. 1, the hatched area is a measurement channel in an alarm state and is displayed in red, for example, in red, measurement channel 7 at importance level 1, measurement channel at importance level 2 28, the importance level 3 corresponds to the measurement channel 32, and the importance level 4 corresponds to the measurement channels 14 and 46. Other measurement channel regions are displayed in a normal state, for example, in green.

  By using this alarm display screen, if multiple measurement channels are in the alarm state at the same time, the importance of the alarm is judged based on the size of the display area, and the measurement channels with the highest importance are required. Therefore, the operator can efficiently perform the alarm handling process.

  By the way, if a plurality of measurement channels are in an alarm state at the same importance level in the display form of FIG. 1, it may be difficult to determine which measurement channel to treat. In such a case, the saturation or brightness can be set in multiple stages, and the saturation or brightness is varied according to the priority of the alarm within the same importance level, so that the worker can perform the work. The priority order can be recognized accurately. Specifically, when a measurement channel that is in an alarm state is displayed in, for example, a red color, a measurement channel with a high alarm priority within the same importance level is displayed in a brighter red color or displayed with a higher luminance. Like that.

The generation of the display screen shown in FIG. 1 will be described.
(1) First, for each measurement channel, in addition to alarm setting ON / OFF, alarm type (upper limit alarm H, lower limit alarm L, etc.), alarm set value, etc. “Priority” at the same importance level is set, and the set values are stored in the memory for each measurement channel.
(2) Next, when the alarm setting is ON, alarm calculation processing (comparison) is performed for each measurement channel according to the measurement result, alarm type, and alarm set value for each measurement cycle. The alarm release or alarm setting OFF is set to 0, and the alarm calculation results are also stored in the memory for each measurement channel.

(3) Subsequently, a ratio (position) on the X-axis is set for each importance level. Level 1 is r1, level 2 is r2, level 3 is r3, level 4 is r4, and the values are as follows, for example. In the display example of FIG. 1, the total number of channels = 50, the number of X-axis dots 401, and the number of Y-axis dots 301.
r1 = 10.5
r2 = 5
r3 = 2.5
r4 = 1
(4) For each importance level, set the maximum number of display channels on the Y axis. Level 1 is Q1, level 2 is Q2, level 3 is Q3, level 4 is Q4, and the values are as follows, for example.
Q1 = 5
Q2 = 10
Q3 = 15
Q4 = 15

(5) The number of channels for each level is obtained based on the importance level setting value for each measurement channel set in (1). Assume that the obtained number of measurement channels is as follows, assuming that level 1 is n1, level 2 is n2, level 3 is n3, and level 4 is n4.
n1 = 3
n2 = 10
n3 = 10
n4 = 27
(6) The number of rows for each importance level is obtained from the number of measurement channels obtained in (5) and the maximum number of channels displayed on the Y axis in (4).
L □ = n □ / Q □ However, the remainder is rounded up (L □ is an integer value □ is 1 to 4)
Further, the display channel on the Y axis for each level is obtained.
M □ = n □ / L □ However, the remainder is rounded up (M □ is an integer value □ is 1 to 4)
Level 1 L1 = n1 / Q1 L1 = 3/5 L1 = 1 (row) M1 = n1 / L1 M1 = 3/1 M1 = 3 (channel)
Level 2 L2 = n2 / Q2 L2 = 10/10 L2 = 1 (row) M2 = n2 / L2 M2 = 10/1 M2 = 10 (channel)
Level 3 L3 = n3 / Q3 L3 = 10/15 L3 = 1 (row) M3 = n3 / L3 M3 = 10/1 M3 = 10 (channel)
Level 4 L4 = n4 / Q4 L4 = 27/15 L4 = 2 (row) M4 = n4 / L4 M4 = 27/2 M4 = 14 (channel)

(7) The ratio (position) on the X axis for each importance level is calculated.
Level 1 XX1 = 0
Level 2 XX2 = r1 * L1 / (r1 * L1 + r2 * L2 + r3 * L3 + r4 * L4)
Level 3 XX3 = r2 * L2 / (r1 * L1 + r2 * L2 + r3 * L3 + r4 * L4)
Level 4 XX4 = r3 * L3 / (r1 * L1 + r2 * L2 + r3 * L3 + r4 * L4)
The actual coordinate position on the X-axis can be obtained by multiplying the length of the X-axis (the number of dots in the case of LCD) by the above value.
Level 1 X1 = XX1 * X
Level 2 X2 = XX2 * X + X1
Level 3 X3 = XX3 * X + X2
Level 4 X4 = XX4 * X + X3
Level 1 X1 = 0
Level 2 X2 = 400 * (10.5 * 1 / (10.5 * 1 + 5 * 1 + 2.5 * 1 + 1 * 2)) = 210
Level 3 X3 = 400 * (5 * 1 / (10.5 * 1 + 5 * 1 + 2.5 * 1 + 1 * 2)) + 210 = 310
Level 4 X41 = 400 * (2.5 * 1 / (10.5 * 1 + 5 * 1 + 2.5 * 1 + 1 * 2)) + 310 = 360
X42 = 400 * (1 * 1 / (10.5 * 1 + 5 * 1 + 2.5 * 1 + 1 * 2)) + 360 = 380

(8) The actual coordinate position on the Y-axis for each importance level is obtained by multiplying the Y-axis length (number of dots in the case of LCD) by the display channel on the Y-axis obtained in (6). be able to.
Level 1 1st channel Y11 = Y * 0
2nd channel Y12 = Y * (1 / M1)
3rd channel Y13 = Y * (2 / M1)
M1st channel Y1M = Y * ((M1-1) / M1)
The level 2 and later can be obtained in the same manner.
Level 1 1st channel Y11 = 0
2nd channel Y12 = 300 * (1/3) = 100
3rd channel Y13 = 300 * (2/3) = 200

  By performing the above arithmetic processing for all measurement channels, the coordinates of each display position as shown in FIG. 2 can be obtained.

(9) In each display area calculated in this way, the importance level is set for each display cycle according to the priority setting within the same importance level as the importance level setting for each measurement channel set in (1). For each level, each measurement channel is arranged from the top to the bottom and the channel number (TAG name) is displayed. Based on the alarm calculation processing result data for each measurement channel in (2), the alarm is generated The channel is displayed as shown in FIG. 1 by painting its display area in red and painting it in green when the alarm is released or in a normal state. If necessary, the measured values are read from the memory and displayed in an expanded manner.

  In the embodiment of FIG. 1, the example in which the measurement channels are arranged from the top to the bottom for each importance level is shown on the assumption that the importance level decreases from left to right. As the importance level decreases toward, measurement channels may be arranged from left to right for each importance level.

  Further, even when the measurement channels are sequentially arranged in the equally divided area as shown in FIG. 6 and the alarm occurrence is displayed, the saturation or luminance of the display area of the alarm occurrence measurement channel according to the alarm generation importance level. By making different, it is possible to make the worker accurately recognize the priority of the work.

  FIG. 4 is a block diagram showing the main part of a specific example of an apparatus for carrying out the present invention. The measurement channel memory 1 stores, for each measurement channel, the “importance level” of the alarm, “priority” at the same importance level, ON / OFF of the alarm setting, and the like.

  The importance level-specific X-axis ratio setting unit 2 sets a ratio (position) on the X-axis for each importance level. The maximum display channel number setting unit 3 on the Y axis for each importance level sets the maximum display channel number on the Y axis for each importance level.

  The number-of-importance level channel number calculation unit 4 obtains the number of channels for each importance level based on the importance level setting value for each measurement channel set in the measurement channel-specific memory 1.

  The number of rows by importance level / number of channels displayed on Y-axis calculating section 5 is the maximum number of channels displayed on the Y-axis set by the maximum number of channels displayed on Y-axis by importance level setting section 3 and the channels by importance level. Based on the number of measurement channels obtained by the number calculator 4, the number of rows for each importance level and the display channel on the Y axis for each importance level are obtained.

  The importance level X-axis coordinate position calculation unit 6 multiplies the setting value set by the importance level X-axis ratio setting unit 2 by the X-axis length (in the case of LCD, the number of dots). The ratio (position) on the X axis for each degree level is calculated.

  The Y-axis coordinate position calculation unit 7 by importance level calculates the Y-axis length (number of dots in the case of LCD) to the number of rows by importance level and the number of display channels on the Y-axis calculation unit 5 on the Y-axis. By multiplying the display channels, the ratio (position) on the Y axis for each importance level is calculated.

  The alarm display screen generation unit 8 stores the “importance level” of the alarm for each measurement channel stored in the memory 1 for each measurement channel, “priority” at the same importance level, ON / OFF data of alarm setting, importance Ratio (position) data on the X-axis for each importance level calculated by the X-axis coordinate position calculation unit 6 for each level and the Y-axis for each importance level calculated by the Y-axis coordinate position calculation unit 7 for each importance level Based on the above ratio (position) data, an alarm display screen as shown in FIG. 1 is generated.

  When an alarm is generated, an alarm display as shown in FIG. 5 of the measurement channel may be enlarged and displayed on the entire screen. The alarm display screen of FIG. 5 is provided with a measurement channel number CH, a measured value MV, a comment CMT about a treatment to be performed when an alarm is generated, a time display unit TM for displaying an elapsed time since the alarm is generated, and the like. Yes. This alarm display screen is generated and displayed when an alarm is generated, and is updated every display cycle while the alarm state continues. When a plurality of alarms are generated, a channel having a high importance level and a high priority at the same importance level is displayed. The alarm occurrence elapsed time display function can clearly indicate to the operator the grace time for an alarm when processing such as confirmation (ACK) is required within a certain time from the occurrence of the alarm, indicating the degree of urgency. It is effective for.

  As described above, according to the present invention, the importance level of each of a plurality of measurement channels in an alarm state can be accurately identified from the display screen, which is effective for monitoring various measurement values.

It is a specific example figure of the alarm display screen based on this invention. It is an example of a coordinate which shows the display position of each alarm display area. It is another example figure of the alarm display screen based on this invention. It is a block diagram which shows the principal part of the specific example of the apparatus which implements this invention. It is a full-screen enlarged display example figure of an alarm display. It is an example figure of the conventional alarm display screen.

Explanation of symbols

1 Memory for each measurement channel 2 X-axis ratio setting section for each importance level 3 Y-axis display maximum channel setting section for each importance level 4 Channel number calculation section for each importance level 5 Number of rows per importance level and Y-axis display Number of channels calculator 6 X-axis coordinate position calculator by importance level 7 Y-axis coordinate position calculator by importance level 8 Alarm display screen generator

Claims (5)

The display screen of the two-dimensional display is divided into a plurality of areas so as to correspond to a plurality of measurement channels, and when the measurement value is determined to be abnormal, the display area of the corresponding measurement channel is selectively displayed as an alarm , In the alarm display device configured to change the display form of the display area of the measurement channel according to the set importance of the alarm,
The size of the display area of the measurement channel is varied according to the importance of the alarm, and each display area is directed to a predetermined direction for each importance level according to the priority setting within the same importance level. An alarm display device characterized by arranging measurement channels . 2. The alarm display device according to claim 1, wherein the saturation or luminance of the display area of each measurement channel is made different according to the importance of the alarm. 3. The alarm display device according to claim 1 , wherein when an alarm occurs, the display area of the corresponding measurement channel is enlarged and displayed. 4. The alarm display device according to claim 3 , wherein at least one of a comment relating to a treatment to be performed when an alarm is generated and an elapsed time since the alarm is generated is displayed on the enlarged display screen. 5. The alarm according to claim 3 , wherein an important measurement channel having a high priority that should be dealt with first is enlarged when a plurality of measurement channels are in an alarm state at the same time. Display device.

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