JP7272741B2 - Waveform recorder - Google Patents

Description

The present invention relates to a waveform recording device, and more particularly to a waveform recording device for generating, recording, and displaying waveform data.

Waveform recorders generally generate waveform data after A/D conversion of input signals, and display, print, or record the waveform data on the screen. It is used.

In such a waveform recording device, there is a demand not only for displaying waveform data in real time, but also for temporarily stopping the waveform data on the screen to confirm details, and for confirming the state before and after the waveform data. . Therefore, the conventional waveform recording apparatus is configured so that the waveform data recorded in the past can be confirmed as a still image, and furthermore, the still image of the waveform data can be scrolled back and forth along the time axis. (See, for example, Patent Document 1).

Patent No. 3502929 Patent No. 5430310

By the way, the conventional waveform recording apparatus has a problem that confirmation failure of waveform data occurs when returning the screen from a static state to the original real-time display. Therefore, when the original real-time display is restored, there is a problem that the waveform data cannot be confirmed from the time of rest to the time of restoration.

On the other hand, Patent Literature 2 proposes a waveform recording apparatus that simultaneously displays actual waveform data and past waveform data on a screen for confirmation. According to this device, since the actual waveform data is also displayed while the past waveform data is being displayed, the past waveform data and the actual waveform data can be checked at the same time.

However, it is unrealistic to check the details of the past waveform data as a still image without overlooking the actual waveform data, which is a moving image. In addition, since it is possible to check the details of the past waveform data other than the actual waveform data, there is also a problem that the details of the actual waveform data cannot be checked.

The present invention has been made in view of such circumstances, and it is possible to check the waveform data in a stationary state, and to check the details of all the waveform data, including the waveform data obtained while checking. It is an object of the present invention to provide a waveform recording device capable of

In order to achieve the above object, the invention according to claim 1 comprises a recording medium for recording data, a waveform generating section for generating waveform data from the data in the recording medium, and a waveform data generated by the waveform generating section. and a monitor control unit for displaying on a monitor, wherein while recording data on the recording medium, the latest waveform data is generated from the latest data in the recording medium and displayed as a moving image on the monitor. and a static display mode in which waveform data is generated from data in the recording medium while data is recorded in the recording medium and displayed as a still image on the monitor, A waveform recording apparatus is provided, comprising scrolling means for scrolling waveform data displayed on the monitor in a still display mode, the scroll means displaying the latest waveform data by scrolling.

The static display mode of the present invention can scroll and display not only past waveform data but also real-time latest waveform data. Therefore, data after switching to the still display mode can also be confirmed as a still image by scrolling. As a result, it is possible to prevent data from being overlooked in confirmation.

Further, the invention according to claim 1 is characterized in that the still display mode is automatically switched to the real display mode when the latest waveform data is displayed by scrolling with the scroll means. According to the present invention, when the static display mode is scrolled to the latest waveform data, the mode is automatically switched to the real display mode.

According to a second aspect of the present invention, there is provided an information adding means for adding information to the waveform data displayed on the monitor in the static display mode and recording the waveform data on the recording medium. According to the present invention, information can be added to the waveform data displayed in the static display mode. In the present invention, since it is possible to scroll to the latest waveform data, it is possible to prevent overlooking the latest waveform data even when information is added to a still image.

The invention of claim 3 is the invention of claim 2 , further comprising printing means for generating waveform data for printing from the data on the recording medium and printing the waveform data by a printer, wherein the information added by the information adding means is printed by the printing means. It is characterized in that when the waveform data for printing is generated, it is automatically added to the waveform data for printing and printed. According to the present invention, since the additional information is printed, the added information can be confirmed on the printed matter.

According to the present invention, the waveform data displayed in the static display mode can be displayed by scrolling to the latest waveform data. Therefore, when the static display mode is switched to the real display mode, data may be overlooked. can be prevented.

FIG. 1 is a diagram schematically showing the configuration of a waveform recording apparatus to which the present invention is applied; A diagram for explaining the effects of the present invention. A diagram showing an example of a comment input screen

A preferred embodiment of a waveform recording apparatus according to the present invention will be described with reference to the accompanying drawings. FIG. 1 schematically shows the configuration of a waveform recording apparatus 10. As shown in FIG.

As shown in FIG. 1, the waveform recording apparatus 10 is provided with a plurality of connection terminals 12A, 12B, and 12C (only three are shown), and external devices (not shown) are connected to the connection terminals 12A to 12C, respectively. be done. Various input signals such as voltage, temperature, vibration, strain, and acceleration are input as analog signals from external devices. Each connection terminal 12A to 12C is connected to an analog signal input section 14, which converts the input signal into a voltage signal and amplifies it to a predetermined level.

The analog signal input section 14 has a plurality of channels set for each of the connection terminals 12A to 12C, and is configured to simultaneously process a plurality of analog signals. The analog signal processed by the analog signal input section 14 is converted into a digital signal by the A/D conversion section 16 . The A/D converter 16 is configured to simultaneously convert all channels by synchronizing with the conversion clock from the clock generator 18 .

The digital data output from the A/D converter 16 is collected in time series by the data collector 20 . The data collection unit 20 is configured to select channel data based on the ON/OFF setting of each channel. Further, the data collection unit 20 is configured to thin out data according to the set sampling rate. Furthermore, when peak data is set as the recording method, the maximum value and minimum value within the sampling period are detected to generate peak data.

The data collected by the data collection unit 20 is judged by the trigger detection unit 22 as to whether or not the trigger condition has been reached. The trigger detection unit 22 is configured to use reference data for comparison preset in the trigger setting unit 24 to determine whether the trigger condition has been reached.

The output destination of the data that has passed through the trigger detection section 22 is switched by the recording/non-recording switching section 26 . “Save (record)” or “non-save (non-record)” is set in the recording/non-recording switching unit 26 . is directly output to , and is designed to process the signal without storing it. Conversely, when "save" is set, the data is output to the recording medium 30 via the recording processing unit 28. FIG. The recording processing unit 28 outputs data to the recording medium 30 according to the writing state of the recording medium 30 and causes the recording medium 30 to record the data. Although the type of recording medium 30 is not particularly limited, for example, SSD, HD, DVD, USB memory, etc. are used.

Data recorded on the recording medium 30 is read by the reproduction processing unit 32 . The reproduction processing unit 32 is configured to read data from the recording medium 30 for monitor display and printer printing, which will be described later, temporarily store the data in a buffer memory (not shown), and then output the data to the waveform image generation unit 34 .

The waveform image generator 34 is configured to generate waveform data for monitor display and waveform data for printer printing from the input data. The waveform image generation unit 34 is configured to perform various processes in accordance with the display conditions such as the waveform color and the display conditions such as the background according to the setting conditions. For example, at the same time waveform data is generated, grid patterns and text can be synthesized, waveform data can be displayed in a different color for each channel for monitor display, and white can be used for printer printout data. / It is configured to generate a waveform with black binary data.

The waveform data generated by the waveform image generator 34 is transmitted to the monitor controller 36 and printer controller 38 . The monitor control unit 36 performs various processes for displaying waveform data on the monitor 40 . For example, in a monitor display mode, which will be described later, data is output to the monitor 40 so as to display the waveform data as a moving image. In the still image display mode, data is output to the monitor 40 so as to display the waveform data as a still image, and when further scrolling is performed, the waveform data is scrolled according to the scrolling direction and scrolling speed. Data is output to the monitor 40 as follows.

The printer control unit 38 outputs printing waveform data to the printer 42 so that printing is performed based on the set printing conditions. For example, it outputs the waveform data for printing to the printer 42 according to the set printing speed.

The data acquisition unit 20, the trigger detection unit 22, the trigger setting unit 24, the recording/non-recording switching unit 26, the recording processing unit 28, the recording medium 30, the reproduction processing unit 32, and the waveform image generation unit 34 described above perform data processing. A data processing unit 44 that performs processing and is controlled by a control unit 46 .

The control unit 46 is configured to transmit a control signal to the data processing unit 44 and the analog signal input unit 14 in response to an operation signal from the input operation unit 48 and control them. For example, the channel of the analog signal input section 14 is set, and the channel, sampling rate, and recording method of the data collection section 20 are set. In addition, the trigger condition of the trigger setting section 24 is set, and "recording" and "non-recording" of the recording/non-recording switching section 26 are set.

An input operation unit 48 for inputting operation signals to the control unit 46 inputs operation information by operating operation keys or a touch panel, external communication (LAN, RS232C, etc.), contact signal input, or the like. . The input operation unit 48 also performs a scrolling operation, which will be described later, and inputs and corrects comments.

By the way, the control unit 46 switches the "display mode" displayed on the monitor 40 by controlling the reproduction processing unit 32, the waveform image generation unit 34, and the monitor control unit 36 based on the operation information from the input operation unit 48. is configured as Specifically, the input operation unit 48 is provided with a mode switching button (not shown), and by operating this mode switching button, the user can switch between the "real display mode" and the "still image display mode." It can be switched.

"Real display mode" is a mode for displaying the latest waveform data in real time. In this "real display mode", data is continuously recorded on the recording medium 30, the latest data recorded on the recording medium 30 is read by the reproduction processing unit 32, and the waveform image generating unit 34 reproduces the latest waveform data. Further, by controlling the latest waveform data with the monitor control unit 36, the monitor 40 continuously displays it as a moving image. As a result, the monitor 40 always displays the latest waveform data as a moving image in real time. It should be noted that moving images displayed in the "real display mode" include moving images in which waveform data is advanced frame by frame.

On the other hand, the "still display mode" is a mode for displaying waveform data as a still image. In this "still display mode", the data recorded on the recording medium 30 is read out by the reproduction processing unit 32 to generate waveform data, and the monitor control unit 36 is controlled to display the waveform data as a still image on the monitor 40. do. As a result, the waveform data is displayed on the monitor 40 as a still image.

In addition, in the "static display mode", by performing a scrolling operation (for example, operating the left/right button or rotating a rotary knob) with the input operation unit 48, the displayed portion of the waveform data is scrolled to the right or left of the screen. It is designed to That is, the display portion of the waveform data can be moved along the time axis, and old waveform data and new waveform data can be displayed.

At this time, the scroll range is set to cover all the data recorded on the recording medium 30, and when new data is recorded during the "still display mode", the waveform data including that data is displayed. A part is displayed by scrolling operation. Therefore, when the display portion of the waveform data is moved to the new side of the time axis by the scrolling operation, the latest waveform data as displayed in the "real display mode" can also be displayed. When scrolling to the latest waveform data is performed during the "still display mode", the switching operation to the "real display mode" is automatically performed.

Note that in the scroll operation, the scroll movement speed is determined according to the operation speed, and the scroll movement amount is determined according to the operation amount of the scroll operation. Therefore, the operator can freely change the display portion of the waveform data by scrolling.

Next, the operation of the waveform recording apparatus 10 constructed as described above will be described with reference to FIG.

FIG. 2 is a schematic diagram showing the relationship between recorded data in the recording medium 30 and display data on the monitor 40. As shown in FIG. In the figure, the solid-line waveform schematically shows the data whose recording to the recording medium 30 is started at time t0. 2(a) shows the situation at time t1, FIG. 2(b) shows the situation at time t2, and FIG. 2(c) shows the situation at time t3. In FIG. 4, the two-dot chain line frame indicates the range displayed on the monitor 40 in the "real display mode", and the solid line frame indicates the range displayed on the monitor 40 in the "static display mode". An example is shown.

In the “real display mode”, recording to the recording medium 30 is continuously performed, and the newest data among the data recorded to the recording medium 30 is displayed on the monitor 40 . For example, at time t1 in FIG. 2A, the waveform data closest to time t1 is displayed as indicated by the two-dot chain line, and at time t2 in FIG. 2B, the waveform data closest to time t2 is displayed. , at time t3 in FIG. 2(c), waveform data closest to time t3 is displayed. Thus, in the "real display mode", the latest waveform data among the data recorded on the recording medium 30 is always displayed on the monitor 40 and displayed as a moving image.

On the other hand, in the "still display mode", any data recorded on the recording medium 30 can be displayed as a still image. For example, at time t1 in FIG. 2A, the waveform data can be displayed on the monitor 40 in the range from time t0 to time t1, and the display range can be changed within that range by scrolling. can. Similarly, at time t2 in FIG. 2B, the waveform data can be displayed on the monitor 40 in the range from time t0 to time t2, and the display range can be changed within that range.

By the way, when recording to the recording medium 30 is continuously performed during the "still display mode", the data increased during the "still display mode" is also included in the scroll range. For example, when the "real display mode" is switched to the "still display mode" at time t1 in FIG. However, at time t2, it is possible to check the range including this range by performing a scroll operation. Therefore, it is possible to prevent failure to check the data from the time t1 to the time t2 as in the conventional general waveform recording device. That is, in a conventional general waveform recording apparatus, when switched to the "still display mode", only the data up to the time t1 could be checked, so the data after the time t1 could not be checked. With the waveform recording apparatus 10 of the form of (1), it is possible to prevent omission of confirmation.

In addition, in the present embodiment, switching from the "still display mode" to the "real display mode" is automatically performed, thereby further preventing omission of data confirmation. That is, when the latest data is displayed by scrolling during the "static display mode", the "static display mode" is automatically switched to the "real display mode". For example, when the scroll operation is started in the "still display mode" at time t2 in FIG. 2(b) and the display range at time t3 in FIG. It is designed to switch to "real display mode". Therefore, it is possible to check the data after time t3 in the "real display mode" while checking the data up to the time t3 in the "still display mode".

By the way, in the waveform recording apparatus 10 of the present embodiment, comments can be input, changed, and deleted during the "still display mode". For example, FIG. 3 shows an example of a comment input screen. When inputting a comment, first touch the portion of the waveform data to be input. As a result, a comment frame 50 and lead lines 52 are displayed as shown in FIG. The position of comment frame 50 can be moved, for example, by moving a finger while touching the screen.

Next, a comment is input by the input operation unit 48 . For example, information such as "abnormal radio wave" and "overvoltage" is input as an explanation of the waveform data. At that time, it is also possible to select from options of the content of comments that have been input in advance. The content of the comment input in this way and the additional information such as the position of the comment frame 50 are recorded on the recording medium 30 together with the data. When the data is read again from the recording medium 30 and the waveform is displayed as a still image, the additional information is also restored and displayed again. Note that the additional information can be changed or deleted by the input operation unit 48 . Further, the additional information is automatically attached to the waveform data and printed when the waveform data is printed. Additional information disappears when scrolling.

In this way, when you enter, change, or delete comments during the "static display mode", the time in the "static display mode" is relatively long, so much data is added during that time, making it difficult to overlook data. A problem arises that is likely to occur. However, as described above, the waveform recording apparatus 10 of the present embodiment can be checked by scrolling to the latest waveform data in the "static display mode", and when scrolling to the latest waveform data, the "real display mode" can be used. , it is possible to prevent omission of data confirmation.

DESCRIPTION OF SYMBOLS 10... Waveform recording apparatus 12A-12C... Connection terminal 14... Analog signal input part 16... A/D conversion part 18... Clock generator part 20... Data acquisition part 22... Trigger detection part 24... Trigger setting Section 26 Recording/non-recording switching section 28 Recording processing section 30 Recording medium 32 Reproduction processing section 34 Waveform image generation section 36 Monitor control section 38 Printer control section 40 Monitor , 42... Printer, 46... Control unit, 48... Operation unit, 50... Comment frame, 52... Leader line

Claims (3)

A waveform recording apparatus comprising: a recording medium for recording data; a waveform generation section for generating waveform data from the data in the recording medium; and a monitor control section for displaying the waveform data generated by the waveform generation section on a monitor. There is
a real display mode in which the latest waveform data is generated from the latest data in the recording medium while recording data in the recording medium and displayed as a moving image on the monitor; A switching means for switching between a still display mode for generating waveform data from the data of and displaying it on the monitor as a still image,
scrolling means for scrolling the waveform data displayed on the monitor in the static display mode , the scroll means displaying the latest waveform data by scrolling; is automatically switched from the static display mode to the real display mode . 2. A waveform recording apparatus according to claim 1, further comprising information adding means for adding information to the waveform data displayed on said monitor in said still display mode and recording the added information on said recording medium. printing means for generating printing waveform data from data on the recording medium and printing the data with a printer, wherein the information added by the information adding means is used when the printing means generates the printing waveform data; 3. A waveform recording apparatus according to claim 2, wherein the waveform data is automatically added to and printed .

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