JPS61250689A - Forecast display unit for data - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to data prediction, which displays predicted values of data, such as predicted values of demand values, in the form of a trend graph on a visual display device such as a cathode ray tube (CRT). This invention relates to display devices.

[Conventional technology]

An example of a conventional display device for displaying a demand value is the one shown in FIG. 4. In the figure, 1 is an input circuit for inputting data, 2 is an input data memory for storing input data, and 2b is an input data memory for storing input data. A display data memory stores display data, 3 is a central processing unit (CPU) for data conversion, 5m is an output circuit that outputs data, and 8 is a visual display device (CRT) that displays data.

Next, the operation will be explained. Input data is first temporarily stored from the input circuit 1 to the input data memo 'J2m via the CPU 3. Next, the input data is sent to the CPU 3 for processing.
Processed for CRT display by Vc, display data memo'
Stored in J2b. At that time, in the case of digital display,
Input data memo') 2m corresponds to 1 to IK, but in the case of trend graph display, if the number of displays is n, 1 to n
Continuous memory is supported. Then, the demand value is displayed on the CRT 8 from the output circuit 5a.

In FIG. 4, solid lines indicate the flow of data.

[Problem that the invention seeks to solve]

Conventional demand value display devices are configured as described above, and only the past and present demand values are displayed. Therefore, the predicted value must be calculated by the operator himself based on data and experience, and care must always be taken. There was a need.

Further, the processing CPU is required to calculate the CRT display address, and when processing other functions as well, there are problems such as a heavy load.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a data prediction display device that can display predicted data together with measured data in a trend graph.

In addition, by distributing functions, the load on the processing CPU is reduced,
An object of the present invention is to obtain a data predictive display device capable of improving processing functions.

[Means for solving problems]

In the data prediction display device according to the present invention, in order to display prediction data as a trend graph, the memory is provided with a predicted value memory section in addition to an input value memory section and a measured value memory section, and the memo IJ&C is a prediction value memory section. In addition to adding an arithmetic circuit, a CPU for visual display was added to reduce the load on the processing CPU.
U is provided separately.

[For production]

The data prediction calculation circuit in this invention performs prediction calculations from the data in the measured value memory section, stores the prediction results in the prediction data memory, and uses a CPU for processing.

The data is displayed as a busy trend graph on a visual display device via an output circuit and a CPU for visual display. If a CPU for visual display is provided separately, functions can be distributed along with a CPU for processing.

〔Example〕

An embodiment in which the present invention is applied to a demand value predictive display device will be described below with reference to the drawings. In FIG. 1, 1 is an input circuit from which data is input. Reference numeral 2 denotes a memory, which is divided into two input value memory sections, a measured value memory section 2B, a predicted value memory section 2C, and a setting value memory section 2D according to the type of data. 3 is a CPU for processing mainly data conversion and alarms. 4 is a prediction calculation circuit, which calculates future predicted values from past measured values.

Reference numerals 5 and 6 are output circuits for transmitting data to the CRT side, and during this time they are performing interface processing for communication. Reference numeral 7 denotes a CPU for visual display, which mainly processes positions and colors to be displayed on a CRT 8, which will be described later. 8 is a visual display device (CRT) on which each data is displayed as a trend graph in different colors.

Next, we explain the operation using the problem analysis diagram shown in Figure 2.
gram). In Figure 1, 2 to 4
corresponds to

First, in step 1O, all the memories of each memory section 2 to 2D of the memory 2 are initialized to OK. Then, in step 11, the input circuit 1
The processing CPU 3 converts the input data for displaying a trend graph and stores it in the measured value memory section 2B. Process 12 is almost the same as process 11, but the difference from process 11 is that the setting value is not input from the input circuit 1, but is set from the CRT 8. This is similar to the conventional device, and the essence of the present invention is as follows.

Step 13 is a dead time check step, and if it is within the dead time, the predictive calculation is not performed and the process moves to step 15. If it is outside the dead time, the predictive calculation is performed in step 14.Step 14
The detailed processing contents are steps 17 to 21. Step 17 calculates the average increase per measurement from the latest past four measurements stored in the measurement value memory section 2B. In step 18, steps 19 to 21 are repeated several times on the display side.

Step 19 is a comparison step with the current point; if it is before the current point, go to step 21; if it is after the current point, go to step 20, add the average increase obtained in step 17 to the previous predicted value, and store it in the predicted value memory. Store in section 2C. Step 21 advances the pointer indicating the storage memory address by one and returns to step 19. Process 1
5 is an alarm processing step, and detailed processing contents are shown in steps 22 to 5.
It will be held on the 25th. Step 22 is a step of checking the measured value and the set value. If the measured value exceeds the set value, the process moves to step 25; otherwise, the process moves to step 23, where the dead time is checked. If it is within the dead time, the process ends, and if not, the predicted value and set value are further checked in step 1!24. If the predicted value exceeds the set value, proceed to step 2.
5, and if not, the process ends. Step 25 is an alarm display output processing step to the CRT 8. That is, step 15 outputs an alarm only when the measured value exceeds the set value or when the predicted value exceeds the set value outside the dead time.

In step 16, the value obtained by subtracting the set value from the measured value is displayed as an excess value. If the measured value is less than the set value, it is set to 0.

FIG. 3 shows an example of a trend graph and digital values displayed on the CRT8. In FIG. 3, 26 is displayed only when there is an alarm output.

Moreover, the lines 27 to 29 are actually all solid lines in different colors, and are displayed in correspondence with the digital display.

In the above example, demand prediction was explained, but data that changes relatively with time, does not change suddenly in a short period of time, and does not require precise predicted values, such as electric power amount or water intake amount. The present invention can be similarly applied to a predictive display device for temporally changing data such as the following.

〔Effect of the invention〕

As described above, according to the present invention, the predicted value memory section and the predicted calculation circuit are added and the predicted value is displayed as a trend graph on the visual display device, so that just by looking at the visual display device, You can know the predicted value of the future,
It has the effect of being able to deal with changes early. In addition, since a central processing unit for visual display is provided separately from the central processing unit for processing, it is possible to distribute the functions of the central processing unit, reduce the load on the central processing unit for processing, and improve processing functions. There are effects that can be achieved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a data predictive display device according to an embodiment of the present invention, FIG. 2 is a problem analysis diagram of the predictive calculation portion of this embodiment, and FIG. 3 is a block diagram showing a data predictive display device according to an embodiment of the present invention. FIG. 4 is a block diagram of a conventional data display device. In the figure, 1 is an input circuit, 2 is a memory, 2 is an input value memory section, 2B is a measured value memory section, 2C is a predicted value memory section, 2
D is a setting value memory section, and 3 is a central processing unit (CP) for processing.
U), 4 is a predicted value calculation circuit, 5.6 is an output circuit, 7 is a central processing unit (CPU) for visual display, and 8 is a visual display device. In addition, in the figures, the same reference numerals indicate the same or lees portions.

Claims (3)

[Claims] (1) An input circuit that inputs data, a processing central processing unit that converts data, a memory that stores data, and an output that outputs the data in the memory via the processing central processing unit. A data prediction display device comprising a circuit and a visual display device for displaying various data outputted from the output circuit as a trend graph in different colors, the data prediction display device being attached to the memory and displaying future data from past measured data values. A prediction calculation circuit for calculating a prediction data value is provided, a central processing unit for visual display is provided between the output circuit and the visual display device, and the memory is configured to input data into the central processing unit for processing. an input value memory section that temporarily stores the input data after passing through the device; and a measured value memory section that stores the input data stored in the input value memory section when it is converted into data for displaying a trend graph by the processing central processing unit. and a predicted value memory section that stores future predicted data values when the predicted calculation circuit calculates them based on past measured data values stored in the measured value memory section. Features a data predictive display device. (2) The memory section further includes a setting value memory section, and the central processing unit for processing is configured such that the predicted data value in the predicted value memory section or the measured data in the measured value memory section is the setting value in the set value memory section. 2. A predictive data display device as claimed in claim 1, wherein the device is configured to issue an alarm indication on the visual display device when a value is exceeded. (3) The data predictive display device according to claim 1, wherein the processing central processing unit has a setting function for a dead time during which predictive data values are not calculated.