JPS63317721A - Level displaying apparatus - Google Patents

Abstract

PURPOSE:To make a displayed level easy to see and to make it possible to read even an input change of high speed easily, by prolonging a time for fetching data to be displayed even with a display interval shortened, so as to make the displayed level stable. CONSTITUTION:A means 30 for preparing data for display prepares the data for display from digital input data taken in from an A-D converter 12, and a means 32 for preparing display groups divides these data for display into groups at every set display interval. Moreover, groups to be displayed are determined sequentially back along a time series from the newest display group in order to display simultaneously the data for display which are included in a simultaneous display group. Therefore, a plurality of display groups including the newest display group are determined sequentially as the groups to be displayed simultaneously, at every display interval. Even when the display interval is set to be small accordingly, a time required for fetching input data to be displayed simultaneously becomes longer than the display interval.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for displaying voltage, current, and other input data in levels.

2. Description of the Related Art Conventionally, observation devices such as recorders are equipped with a level display device that displays the level of input data. By using this level display device, it is possible to check the level of input data such as voltage and current before recording it on recording paper or properly recording or displaying it. , better recording, etc. can be performed. For example, the level can be determined by looking at the display screen, and the range and offset can be adjusted to perform preferable recording. Therefore, using Figure 10,
The main steps up to displaying the level of input data will be described below. First, the input data that enters the input channel is amplified and then input to an A-D converter to convert the input data from analog data to digital data. An example of the data is shown on a full scale from O to 100.The Norse scale divides the whole into, for example, 50 levels and displays them.These digital input data are further converted to display data. In Fig. 108, display data is entered for each set display interval between t. and tl, between tl and t2, and between and 13 in Fig. 10A. This shows the state of grouping.

J-3, the input data is limped at high speed, for example, 50 times within each display interval. In Figure 10C, n,
'For each group of human power 1, human power 2, input 3, etc. along the J series, however, the display arcs included in the same group are the same]
1 to 3 are sequentially displayed as display 1, display 2, display 3, etc. A more concrete example of these level displays using dots corresponding to input data is as shown in FIG. In this figure, the level display is shown moving at each display interval, but in reality, the level display is performed in chronological order on the same rectangular screen.

Problems to be Solved by the Invention However, in such a level display device, if the display interval is set small, the displayed level (dots) moves rapidly, making the level unstable and difficult to see. In other words, the level fluctuations are too fast.

On the other hand, if the display interval is set to a large value, the movement of the display level will become slower and the level will be easier to see, but high-speed movement will not be expressed. That is, it becomes impossible to adapt to high-speed input fluctuations.

The present invention has been made in view of these conventional problems, and one object thereof is to provide a level display device that can easily read even high-speed input fluctuations. .

Means for Solving the Problems Means for achieving the above object will be explained below with reference to FIG. 1 which shows the present invention.

This level display device connects digital input data between an A-D converter 12 that converts input data from analog data to digital data and a display device 16 that displays the human input data in levels. display data creation means 30 for creating display data from;
Display group creation means 32 groups the display data according to set display intervals, and displays the display data included in the plurality of set display groups at the same time. and a simultaneous display group determining means 34 that sequentially determines groups to be displayed simultaneously.

action The above means works as follows.

The display data creation means 30 creates display data from the digital input data taken in from the A-D converter 12,
The display group creation means 32 divides the display data into groups according to set display intervals. Furthermore, in order to simultaneously display the display data included in the simultaneous display groups, the groups to be displayed simultaneously are sequentially determined in chronological order starting from the latest display group. For this reason, the latest
A plurality of display groups including the display group are sequentially determined at each display interval as groups to be displayed simultaneously. Therefore, even if the display interval is set small, the time required to capture input data displayed simultaneously will be longer than the display interval. Therefore, the display device 16 displays the display data included in these simultaneous display groups in levels. As a result, the display level does not flicker,
It's stable and easy to see.

Example Hereinafter, the present invention will be described in detail based on the accompanying drawings.

FIG. 2 is a block diagram showing a level display device according to an embodiment of the present invention. In the figure, 10 is a channel for sending an analog input signal Si such as voltage, current, power, etc., and 12 is an A-D converter that is interposed in the channel 10 and converts input data from analog data to digital data. 14
is the CPU that performs the processing necessary to display the level of input data.
16 is the output signal So from the same device 14.
This is a display device that receives input data and displays the input data in levels. The device 14 equipped with this CPLI is, for example, a microcomputer, and includes a CPU (central processing unit) 18, an RO
M (read only memory > 20. RAM (read/write memory) 22, input port 24, output port 26, pass line 28, etc. The CPU 18 corresponds to the central brain part of the microcomputer, According to the instructions of the program, it performs overall control, performs arithmetic and logical operations, and temporarily stores the results.It also controls peripheral devices.

The ROM 20 stores a control program, a level display processing program, and the like. Further, the RAM 22 stores input data such as voltage and current, data of calculation results of the CPU 1B, and the like. The input port 24 is connected to the A-D converter 12, an operation switch (not shown), and the like. Further, the output port 26 is connected to the display device 16, a recording device (not shown), and the like. The path line 28 includes an address bus line, a data bus line, a control path line, etc. for connecting these, and is also coupled to peripheral devices.

It should be noted that the display device 16 is a digital camera, LCD, CRT, etc., and the recording device is a dot printer, etc.

3 and 4 consist of steps P1 to P12 showing a level display processing program for input data) [! - 1) - To run this program, first set all of the storage variables A1, A2, and A3 to O using Pl. In other words, 1 to the storage variable is the previous input variable, A2
Since A3 corresponds to the input variable from the second previous input, and A3 corresponds to the input variable from the third previous input, both of them are cleared. In P2, input variable B is set to O. At P3, the input data capture counter C is set to O. However, variable names such as A1, A2, A3, etc. are names indicating storage locations of data in the RAM 22, but C is a constant. After the initial settings are sequentially performed in this manner, digital data is inputted from the A-'D converter 12 in chronological order at P4. In P5, display data is created from these input data. That is, display device 1
The display position on the screen of No. 6 is calculated. At P6, these display data are set in the input variable HiB. For example, if the display position is 5 as shown in FIG. 5, the fifth bit of variable B is set to "1".

However, in this processing example, the full scale of 0 to 100 shown in FIG. 6A is divided into 20 levels and displayed. P7
Then add 1 to counter C, and in P8, add 1 to counter C.
is less than or equal to 20. This counter C corresponds to each display interval t. tl, tlt 2, t2t
3 shows the number of 4-numbering of input data. Therefore, if this constant C is set to a small value, the level display interval becomes faster, and conversely, if it is set too large, the display interval becomes slow. At P8, the counter Ch (, If it is smaller than 20, return to the display, repeat steps P - P3,
Variable B for inputting all display data within one display section
Set it to. Incidentally, if the display data are the same, they are set at the same location. In this way, the display data is displayed at the display interval 11. ↑1 t2
, ↑2t3... every time, input car, input 2, input 3...
etc., and are stored with input variable names attached. If it is determined at P8 that the counter C < 20,
Go to P9. In P9, go to the display variables: current input variable B, previous input variable A, and second song input variable A2.
For each bit of the input variable A3 and the input variable A3 three times ago, the logical sum is processed and 17 data is assigned. For example, as shown in Figure 7, the second, fourth, and fifth bits of the variable are each 1''.
Set to . In this way, in order to display the display data included in multiple display groups that have been set up simultaneously, the groups to be displayed simultaneously are determined by going back in time from the latest display group, and the data included in each of those groups is After predetermined processing is performed on the displayed data, storage with display variables attached is performed. Therefore, multiple display groups including the latest display group are sequentially determined and memorized as groups to be displayed simultaneously at each display interval, so even if the display interval is set small, input data that is displayed simultaneously The capture time is longer than the display interval. In PIO, data in input variable 2 is stored in input variable A3, and data in input variable A1 is stored in input variable A2.
Then, by assigning the data of the input variable B to the input variable A1, the storage variables are reset.

In the PLL, i<1 from each bit of the display variable! #
The level is displayed at the ``OII'' position, and the level is not displayed at the ``OII'' position. Therefore, the display variables shown in FIG.
6, the level is displayed using, for example, dots, as shown in FIG. However, in FIG. 8, the positional relationship corresponding to FIG. 7 is reversed left and right. With this process,
All of the display data included in each display group that was imported this time, one time ago, two times ago, and three times ago will be displayed at the level. PI3 determines whether the level display continues or ends. To do this, for example, it is checked whether a level display setting switch is pressed. P2 in case of continuation
Go back and repeat steps P2 to P12. Then,
Input 4 and input 5 in chronological order as shown in Figure 6C
, Input 6, etc., each of the latest groups, together with the three display groups immediately before it, is 21f! Next display 4
, display 5, display 6, etc., corresponding level displays are displayed in row 1. A more concrete example of these level displays using dots corresponding to input data is as shown in FIG. Note that, in reality, levels are displayed sequentially in chronological order on the same rectangular screen. As a result, the display level is easily noticeable and there is no flickering.

In the above embodiment, a one-channel V channel was explained, but a multi-channel channel may be used.

According to the present invention described in detail, even if the display interval is reduced,
Since it takes a long time to capture the displayed data, the display level is stable and easy to see.

Therefore, even high-speed pano J fluctuations can be easily read.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a level display device of the present invention. FIG. 2 is a block diagram showing a level display device according to an embodiment of the present invention. 3 and 4 are flow charts of the level display processing program adopted in the level display device according to the same embodiment, and FIG. 5 is a diagram illustrating an example of the level display position regarding the input variable B in the same program. FIG. 6 is a diagram illustrating the operation process of the level display device according to the same embodiment. FIG. 7 is a diagram illustrating an example of setting level display positions regarding display variables in the same program, and FIG. 8 is a diagram illustrating an example of the level display. FIG. 9 is a diagram illustrating an example of level display of the level display device according to the same embodiment. FIG. 10 is a diagram for explaining the operation process of a conventional level display device, and FIG. 11 is a diagram for explaining an example of level display.

Claims (1)

[Claims] An A-D converter that converts input data provided in an input channel from analog data to digital data, a display data creation means that creates display data from the input data, and a display interval at which the display data is set. In order to simultaneously display the display data included in multiple set display groups, there is also a display group creation means that divides the data into groups by grouping, and a simultaneous display method that determines the groups to be displayed simultaneously by going back in time from the latest display group. 1. A level display device comprising display group determining means and a display device for displaying display data included in these simultaneous display groups in levels.