JPH0569449B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to waveform determination devices applied to digital wave memories, digital oscilloscopes, waveform recorders, FFT (fast Fourier transform) analyzers, etc. Regarding the output method.

[Prior Art] Conventionally, on production lines, characteristic tests have been conducted to measure the distortion rate, crest factor, etc. of a waveform in order to determine whether a product is good or bad.

In addition, in order to judge the measured waveform, it is generally well known that each sampling is compared with preset upper or lower limit data, or the difference with reference waveform data is calculated. There is a way.

However, when using this type of waveform judgment method, usually a judgment criterion is set for the wave height value in the Y-axis direction with respect to the time-axis input, so it is difficult to judge waveforms that have sudden changes in the Y-axis direction, such as rectangular waves. It was not possible to make sufficient judgments along the time axis. Also, when trying to achieve this,
This method requires high-speed data sampling in the time axis direction, and has the disadvantage of being expensive.

Therefore, the present applicant has already proposed a solution to the above problem by filing Japanese Patent Application No. 61-038917 entitled "Waveform Determination Method for Waveform Storage Device."

That is, according to this determination method, as shown in the flowchart shown in FIG. 4, a condition setting routine is first performed in the first step. Figure 5 shows the details of the condition setting routine performed at this time. Specifically, data is created for the judgment reference range, and then the trigger conditions are set as the timing for inputting the waveform under measurement. Specifically, this is done by setting the trigger mode, which determines whether the waveform to be measured is captured continuously or once.

After performing the processing of such a condition setting routine, measurement is started, and data input processing of the waveform to be measured is performed in the next step. Next, the input data of the measured waveform is compared with data in a preset determination reference range, and it is determined whether it is GO (suitable) or NG (unsuitable).

Thus, in the next step, the waveform to be measured, the determination reference range, and the determination result of GO or NG are outputted via an appropriate output means, such as a CRT or printer.

After completing this series of processing, a decision is made based on the trigger mode that has already been set, whether to repeatedly acquire the measured waveform and make a judgment, or to end the processing once. When it is determined, the process returns to the measurement start step, and when it is determined that it is a single shot, the work is finished.

[Problem to be solved by the invention] Therefore, when using the above method, by comparing the input measured waveform with the determination reference range,
It is possible to make the determination of GO and NG either once or repeatedly, and to output the result of the determination via an output means such as a CRT or a printer.

However, among these output methods, when outputting using a printer, all GO and NG waveforms are output to the printer indiscriminately. I had the inconvenience of not being able to do this even if I tried to output it to a printer.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems seen in conventional methods, and its structural features are as follows:
The captured waveform data to be measured is compared with the judgment reference range data written in advance in the memory means backing up the calculation control means, and the waveform data to be measured is compared with the judgment reference range data written in advance in the memory means backing up the calculation control means. After obtaining the determination result of whether or not the value is within the range, it is determined whether the measured waveform corresponding to this determination result conforms to the output conditions of the predetermined printer output command, and if it is determined that it conforms to the output conditions of the printer output command. The object of the present invention is to selectively output to a printer a measured waveform that corresponds to the output conditions of a printer output command.

[Operation] Therefore, according to the present invention, the operator can selectively output to the printer only the necessary measured waveforms in relation to the determination reference range, and data processing can be performed more smoothly. can.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration example of a waveform determination device 1 to which the present invention is applied. Analog data as an input signal expressed using an X-Y coordinate axis such as an X-Y waveform _{A /}
After being converted into digital data via the D converters 10 and 11, the corresponding unique
Arithmetic processing is performed by an arithmetic control means 12 consisting of a CPU equipped with ROM, RAM, etc. Digital data such as the X-Y waveform after being subjected to arithmetic processing by the arithmetic control means 12 is prepared separately.
They can be stored separately in memory means 13 and 14 such as RAM.

Further, digital data such as an X-Y waveform after being subjected to arithmetic processing by the arithmetic control means 12 is
This can be outputted via the CRT 16 or printer 17 while being controlled according to the operation of the key switch 15.

FIG. 2 is a flowchart showing the processing procedure of the present invention executed by the waveform determination device having such a configuration.

That is, the operation of the apparatus 1 is started by operating the key switch 15, etc., and the ground processing of the condition setting routine is performed in the first step.

Figure 3 shows in detail the processing procedure of the condition setting routine performed at this time. Specifically, the data creation process for the judgment reference range is first performed, and then the timing for inputting the waveform to be measured is shown in detail. This is done by setting the trigger conditions, specifically, by setting the trigger mode, which determines whether the waveform to be measured is captured continuously or once. next,
Setting the stop mode, specifically, whether to output the measured waveform to a printer only in NG mode, to output the measured waveform to a printer in both NG mode and GO mode, or not shown in the diagram. However, a stop mode, which is a printer output command, is set as to whether to output to the printer only in the GO mode.

After processing the condition setting routine in this manner, actual waveform measurement is started, and data input processing of the measured waveform is performed in the next step. Next, the data of the input measured waveform is compared with the data of the preset judgment reference range,
Determine whether it is GO (suitable) or NG (unsuitable).

Thus, in the next step, the measured waveform, the judgment reference range, and the judgment result of GO or NG are displayed via the CRT 16.

After displaying the determination result on the CRT 16 in this way, in the next stop mode determination step, the specific stop mode that has been set in advance is determined, that is, according to the illustrated example, whether the stop mode is NG mode or whether NG mode and GO mode are different. It is determined whether or not it includes both. Then, when it is determined that the stop mode is NG mode in this step, it is determined whether the determination result is GO or NG, which has already been determined in the previous step, and if this is GO, it is determined that the stop mode is NG mode. Return to the step at the start of the judgment and repeat the judgment until it is judged as NG. Further, if the waveform is NG, only the waveform determined to be NG in the printer output processing step such as the waveform to be measured can be outputted via the printer 17.

On the other hand, in the stop mode determination step,
When it is determined that the stop mode includes both NG mode and GO mode, in the next step of processing the printer output of the waveform to be measured, etc., the waveform determined to be GO and the waveform determined to be NG are processed as before. Both waveforms can be outputted via the printer 17.

After completing this step of processing the printer output of the measured waveform, etc., the next step is to determine the trigger mode.According to the preset trigger mode, the measured waveform can be repeatedly acquired and judged, or it can be determined in one shot. A determination is made as to whether to end the process, and if it is determined to be repeated, the process returns to the step of starting the measurement, and if it is determined to be a one-shot process, the operation is ended.

In addition, in the step of determining the stop mode in FIG. 2 showing the processing steps in this invention, it is necessary to check whether the specific stop mode set in advance is the NG mode or includes both the NG mode and the GO mode. Part 2
Instead of setting NG mode to stop mode, GO mode can also be set as stop mode. In that case, if NG, the process returns to the start of measurement, and if GO is For example, only waveforms determined to be GO in the printer output processing step, such as waveforms to be measured, can be outputted via the printer.

Therefore, according to the method of this invention, by combining the trigger mode and stop mode, a total of six types of patterns, that is, NG mode and
Judgment results including both GO mode can be output in a single shot or in a repeating pattern, and either NG mode or GO mode can be output in a single shot or in a repeating pattern. It is possible to obtain printer output that flexibly corresponds to waveforms and the like.

[Effects of the Invention] As described above, according to the present invention, after obtaining the determination result of whether or not the measured waveform data is within the determination reference range data, the determination result is
It is possible to selectively print out measured waveforms that correspond to either GO (suitable) or NG (unsuitable), or both, so operators performing characteristic tests on production lines can save their individual work. This makes it possible to efficiently perform the task of determining the waveform to be measured while flexibly responding to the customer's demands.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a waveform determination device to which the present invention is applied, and FIG. 2 is a flowchart showing an example of the processing procedure of the method of the present invention.
FIG. 3 is a flowchart showing in detail an example of the condition setting routine process in FIG. 2, and FIG.
FIG. 5 is a flowchart showing an example of the processing procedure according to the conventional method. FIG. 5 is a flowchart showing in detail an example of the condition setting routine processing in FIG. 1... Waveform determination device, 10, 11... A/D converter, 12... Arithmetic control means, 13, 14...
...Memory means, 15...Key switch, 16...
CRT, 17...Printer, _T1 ...X input terminal,
_T2 ...Y input terminal.

Claims (1)

[Claims] 1 The captured waveform data to be measured is compared with the judgment reference range data written in advance in the memory means backing up the calculation control means, and the waveform data to be measured is compared with the judgment reference range data written in advance in the memory means backing up the calculation control means. After obtaining the determination result of whether or not it is within the range, it is determined whether the measured waveform corresponding to this determination result conforms to the output conditions of the predetermined printer output command, and it is determined that it conforms. 1. A method for outputting a measured waveform in a waveform determination device, characterized in that a measured waveform corresponding to an output condition of a printer output command is selectively outputted to a printer only when the measured waveform is output.