JP2000162242A - Waveform measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To start the analysis of a waveform, without waiting for the finish of a measurement by a method, wherein during acquisition operation, a past waveform is displayed or printed out. SOLUTION: When an acquisition operation is started, only a roll screen is displayed. At a stage at which the acquisition operation progresses to a certain extent, it is desirable to observe a past waveform. At this time, a desired past region is designated by using a cursor or the like. Thereby, measured data which is stored in the past region is read out from a memory 3, and the waveform of the measured data is displayed on a past waveform screen. By moving a cursor, an arbitrary past region can be designated. When the display of the past waveform is not required, a prescribed button is pressed, and the display of the paste waveform screen is erased, and thereby, this procedure is returned to a roll mode in which only the roll screen is displayed. In addition, the roll screen and the past waveform screen may be changed over so as to be displayed. Moreover, the waveform of latest measured data and the waveform of past measured data can be observed on one screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform measuring apparatus for acquiring measurement data by an acquisition operation and displaying or printing out a waveform of the acquired measurement data.

[0002]

2. Description of the Related Art A kind of waveform measuring device converts various physical quantities such as temperature, pressure, strain resistance and the like into electric signals by a conversion means suitable for each application, and displays changes of these electric signals on a display screen. And display changes in physical quantities.
Some are configured to be able to measure. In the conventional waveform measuring apparatus, the waveform of the physical quantity measurement data acquired by the acquisition operation is printed out in the following procedure.

(Conventional Example 1) As shown in FIG. 4, after the acquisition ACQ is completed, a waveform of a necessary portion is printed out.

(Conventional Example 2) As shown in FIG. 5, printout was simultaneously performed while performing acquisition ACQ. Thus, real-time printing is performed. In real-time printing, the sampling rate of the acquisition operation is adjusted to the printout speed.

(Conventional example 3) As shown in FIG. 6, printing is performed simultaneously while performing acquisition ACQ.
Since the sample rate of the acquisition operation is set to be faster than the printout speed, the printout is performed later.

However, each conventional example has the following problems. In the first conventional example, since the printout cannot be performed until the acquisition is completed, the analysis cannot be started until the measurement is completed. In the conventional example 2, since the sampling is performed at a reduced sampling rate to a speed at which the printer can operate, the waveform can be observed for a long time,
You can see the outline of the waveform. However, it is not suitable for detailed analysis. The point at which analysis is started is determined by the operating speed of the printer. In Conventional Example 3, since the sample rate can be increased as compared with Conventional Example 2, detailed analysis can be realized.
However, since the data is printed out later,
The waiting time until the desired point is printed out may be longer. Conventional Example 2 and Conventional Example 3
In both cases, since the printout is continued during the acquisition operation, the printout is performed to an unnecessary portion, and the paper is wasted.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and is intended to display or print out a past waveform during an acquisition operation, thereby completing the measurement. It is an object of the present invention to realize a waveform measuring device that can start analyzing a waveform without waiting for the measurement.

[0008]

SUMMARY OF THE INVENTION The present invention is a waveform measuring device having the following configuration.

(1) In a waveform measuring apparatus which acquires measurement data by an acquisition operation and displays or prints out a waveform of the acquired measurement data, when a past waveform display request is made during the acquisition operation, a display request is issued. A means for displaying or printing out a waveform corresponding to the waveform.

(2) In a waveform measuring apparatus for acquiring measurement data by an acquisition operation and displaying or printing out a waveform of the acquired measurement data, a memory for holding the measurement data acquired by the acquisition operation and a display of a past waveform When a designation means for designating a point and a designation from the designation means during an acquisition operation,
A display control unit that reads measurement data corresponding to a designated display point from the memory and displays a waveform of the read measurement data on a display unit.

(3) The waveform measuring apparatus according to (2), wherein the display means displays the waveform of the latest measurement data and the past waveform specified by the specifying means in different display areas.

(4) A position bar corresponding to a storage area of the memory is displayed on the display means, and the specifying means specifies a display point by specifying a past area of the position bar. Do (2)
The waveform measuring device according to the above.

(5) Print command means for generating a printout command of a past waveform displayed by the display means, and a printer for printing out a past waveform in response to the command of the print command means. The waveform measuring device according to (2), which is characterized in that:

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram showing one embodiment of the present invention. In FIG. 1, the A / D converter 1 performs A / D conversion (analog-to-digital conversion) on the measurement data acquired by the acquisition operation. The data processing means 2 processes the A / D converted data into a display waveform representing a time-series signal change. The data processing means 2 performs offset adjustment and the like on the A / D converted data.

The memory 3 holds the data processed by the data processing means 2. The designating means 4 designates a display point of a past waveform. The display controller 5 reads out the measurement data corresponding to the specified display point from the memory 3 when the designation is made by the designation unit 4 during the acquisition operation, and causes the display 6 to display the waveform of the readout measurement data. .

When the print command means 7 is operated, a printout command of a past waveform displayed by the display means 6 is generated. The print command unit 7 is, for example, an input key displayed on a screen, a key provided on a keyboard, or the like. Printer 8
Prints out the waveform of the measurement data acquired by the acquisition operation. The printer 8 prints out a past waveform when the print command means 7 generates a command.

FIG. 2 is a diagram showing an example of a screen displayed by the waveform measuring device of FIG. In FIG. 2, the roll screen A displays the waveform of the latest measurement data. The display waveform is updated as the acquisition operation proceeds. A past waveform screen B displays a waveform of past measurement data. When there is a display request of a past waveform, a waveform is displayed on the past waveform screen B, and when there is no display request, it is not displayed.

The position bar C is a bar corresponding to the storage area of the memory 3. FIG. 3 is a detailed view of the position bar C. In FIG. 3, the total length L of the position bar C corresponds to the memory length of the storage area. The location where the measurement data at the start of the acquisition is stored is P1, and the location where the latest measurement data is stored is P2. Measurement data is stored over an area from P1 to P2. The area where data to be displayed or printed out is stored is Q. This area is designated by a cursor or the like.

The roll screen A, the past waveform screen B, and the position bar C are displayed on one screen.

In the waveform display device of FIG. 1, at the start of acquisition, only the roll screen A is displayed. When the acquisition operation has progressed to some extent, it may be desirable to view past waveforms. At this time, a desired past area Q is designated by a cursor or the like. As a result, the measurement data stored in the past area Q is read from the memory 3, and the waveform of the measurement data is displayed on the past waveform screen B. You can specify any past area by moving the cursor.

When it becomes unnecessary to display past waveforms,
By pressing a predetermined button, the display of the past waveform screen B disappears. This returns to the roll mode in which only the roll screen is displayed.

The roll screen A and the past waveform screen B may be switched and displayed.

[0023]

According to the present invention, the following effects can be obtained.

According to the first and second aspects of the present invention, the past waveform can be displayed or printed out during the acquisition operation. Therefore, when the measurement is performed for a long time, the past waveform can be displayed without waiting for the end of the measurement. Can be displayed or printed out and analysis can be started.

According to the third aspect of the invention, the waveform of the latest measurement data and the waveform of the past measurement data can be seen on one screen.

According to the fourth aspect of the present invention, it is possible to easily specify a desired point of the past waveform on the screen.

According to the fifth aspect of the present invention, since only a necessary portion of the past waveform is printed out, waste of paper can be reduced.

As described above, according to the present invention, it is possible to realize a waveform measuring apparatus that can start analyzing a waveform without waiting for the end of measurement.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is a diagram showing an example of a screen displayed by the waveform measuring device of FIG.

FIG. 3 is a detailed view of a position bar.

FIG. 4 is a diagram showing a processing procedure of a conventional waveform measuring device.

FIG. 5 is a diagram showing a processing procedure of a conventional waveform measuring device.

FIG. 6 is a diagram showing a processing procedure of a conventional waveform measuring device.

[Explanation of symbols]

 2 data processing means 3 memory 4 designation means 5 display control means 6 display means 7 print command means 8 printer

Claims (5)

[Claims] 1. A waveform measuring apparatus that acquires measurement data by an acquisition operation and displays or prints out a waveform of the acquired measurement data. If a display request of a past waveform is made during the acquisition operation, the display request is issued. A waveform measuring device comprising means for displaying or printing out a corresponding waveform. 2. A waveform measurement apparatus for acquiring measurement data by an acquisition operation and displaying or printing out a waveform of the acquired measurement data, comprising: a memory for holding the measurement data acquired by the acquisition operation; and a display point of a past waveform. A reading means for reading the measurement data corresponding to a specified display point from the memory, and displaying a waveform of the read measurement data on the display means. A waveform measurement device comprising: a display control unit. 3. The waveform measuring apparatus according to claim 2, wherein said display means displays a waveform of the latest measurement data and a past waveform specified by said specifying means in different display areas. 4. A position bar corresponding to a storage area of the memory is displayed on the display means, and the specifying means specifies a display point by specifying a past area of the position bar. The waveform measuring device according to claim 2. 5. A printing apparatus comprising: a print command unit for generating a printout command for a past waveform displayed by the display unit; and a printer for printing out a past waveform in response to a command from the print command unit. The waveform measuring apparatus according to claim 2, wherein