KR101957660B1 - Multi-channel oscilloscopes with trigger setup mode for each channel and control method thereof - Google Patents

Abstract

According to embodiments of the present invention, a control method of a multi-channel oscilloscope supporting a trigger setting mode for each channel supports a trigger setting mode for each channel in a multi-channel oscilloscope including a plurality of oscilloscope modules each having a main control unit and a controller, and comprises: a step of setting a group including one or more channels; a step of setting a trigger for at least one channel among the channels in the group; a step of determining a channel number of the trigger-set channel and a trigger occurrence time and transmitting the channel number of the channel and the trigger occurrence time to the main control unit if the controller detects an trigger occurrence in the channel; a step where the main control unit extracts group channel numbers of a group to which the channel number belongs in accordance with the determined channel number, and transmits trigger occurrence information including the group channel numbers and the trigger occurrence time to the oscilloscope modules having channels of the group channel numbers; and a step where the controller of the oscilloscope module receiving the trigger occurrence information extracts signal data in accordance with the trigger occurrence information to transmit the signal data to a storage to store the signal data.

Description

[0001] The present invention relates to a multi-channel oscilloscope and a control method thereof,

The present invention relates to a multi-channel oscilloscope supporting a channel-specific trigger setting mode. And more particularly, to a multi-channel oscilloscope that provides a trigger setting mode for each group / channel for a plurality of channels.

Historically, oscilloscopes generate and display a time domain waveform for a given input signal. That is, past oscilloscopes have been limited to evaluating time domain phenomena for triggering.

In addition, real-time spectrum analyzers have focused on evaluating frequency domain phenomena and have been supplemented by limited time domain criteria.

Recently, wireless communication analyzers have developed a mixed domain oscilloscope that can acquire and demodulate signals to evaluate modulation domain characteristics, and has a time-correlated acquisition and display function, It is now possible to monitor the signal simultaneously in both domains.

On the other hand, digital devices such as smart phones are making remarkable progress due to the recent development of IT (information technology) technology. Within such a single digital device, numerous devices are intertwined and generate signals for each device. Although there are some signals that are not related to each other, there are many signals that are related to each other and must be observed together.

Therefore, in order to test the operation of modern digital devices, it is necessary to group and monitor a number of related and non-associated signals generated in digital devices.

KR 10-2014-0013913 A

In order to monitor a large number of signals generated at a plurality of terminals in a digital device, a plurality of channels capable of interfacing the signals are required, and a system for processing and storing signals of high capacity data input to the channels is required.

Since the storage of the input multiple signals on the entire timeline consumes a lot of time and effort and requires unnecessary data processing and storage space, a trigger generating signal and a signal Trigger settings are required to store only those bits.

There is also a need to build a storage system that allows the user to easily monitor signals that are not associated with the associated signals.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for receiving a plurality of signals input through a plurality of channels, We propose a multi-channel oscilloscope that supports this possible channel-specific trigger setup mode.

A method of controlling a multi-channel oscilloscope supporting a channel-by-channel trigger setting mode according to an embodiment of the present invention is a method of supporting a channel-by-channel trigger setting mode in a multi-channel oscilloscope including a plurality of oscilloscope modules each having a main controller and a controller, Establishing a group comprising at least one channel; Setting a trigger for at least one of the channels in the group; Determining a channel number and a trigger occurrence point of the channel when the controller detects a trigger occurrence in the triggered channel, and transmitting the channel number and the trigger occurrence point to the main control unit; The main controller extracts group channel numbers of the group to which the channel number belongs according to the determined channel number, and transmits the group channel number and the trigger occurrence point including the group channel number and the trigger occurrence point to the oscilloscope modules having the channel of the group channel numbers Transmitting trigger occurrence information; And the controller of the oscilloscope module that has received the trigger occurrence information extracts the signal data according to the trigger occurrence information, and transmits the signal data to the storage.

The trigger setting for at least one of the channels in the group includes performing a different trigger setting for at least two channels among the channels in the group, Level and a setting for a storage interval before and after a trigger occurrence point.

In addition, when the controller detects a trigger occurrence in the triggered channel, the step of determining the channel number of the channel and the trigger occurrence time and transmitting the trigger number to the main control unit may include receiving the analog signal input through the channel as a digital signal Converting the converted signal data into data; counting the signal data conversion time; temporarily storing the converted signal data in a memory buffer; counting a storing time of storing the sample of the signal data in the memory buffer; The method comprising the steps of:

The transmitting of the trigger generation information including the group channel number and the trigger generation time to the oscilloscope modules having the channels of the group channel numbers may include transmitting the trigger generation information including the group channel number and the trigger generation time to the oscilloscope module having the triggered channel And transmitting the trigger occurrence information.

The controller of the oscilloscope module that has received the trigger occurrence information may further include a controller for extracting signal data according to the trigger occurrence information and transmitting the extracted signal data to the storage to store the trigger signal in a memory buffer of a channel corresponding to the group channel number And determining a signal data sample for a storage interval before and after the trigger occurrence time based on a storage time point of the memory buffer.

The main processor may further include transmitting the signal data stored in the storage along with the log information to the computing device through the interface unit.

In addition, a multi-channel oscilloscope supporting a channel-specific trigger setting mode according to an embodiment includes a case for providing a receiving space of a module; A main computer module mounted in the case and including a main processor, which is a microprocessor unit (MPU), a main memory, and an interface unit; A plurality of oscillator modules (MPUs) mounted in the case, the controller being a micro controller unit (MPU) that processes a plurality of channels receiving an external signal and an external signal input from the plurality of channels to generate signal data; ; A main control module including a main control unit mounted in the case and being a micro controller unit (MPU) for integrally controlling the plurality of oscilloscope modules; And a storage module that is mounted in the case and stores signal data transmitted from the oscilloscope module. The controller of the oscilloscope module detects a trigger occurrence according to a predetermined trigger setting, The main controller transmits a channel number and a trigger occurrence point to the main control unit, and the main control unit extracts a group channel in the channel in which the trigger is generated in accordance with the group setting information and outputs the group channel to the oscilloscope modules The trigger generation point and the channel number of the extracted group channel.

The multi-channel oscilloscope supporting the channel-specific trigger setting mode according to the embodiment can provide systematic monitoring of a large number of related signals and non-related signals input to the multiple channels.

In detail, the multi-channel oscilloscope supporting the channel-specific trigger setting mode according to the embodiment provides a group setting for grouping the related signals and dividing the non-related signals, and a trigger setting for each channel in the group, It is possible to provide a trigger setting function for each channel in the group.

In addition, a multi-channel oscilloscope supporting the channel-specific trigger setting mode according to the embodiment may be capable of trigger setting to cover all cases of a plurality of related / non-related signals through the various trigger setting functions.

In addition, the multi-channel oscilloscope supporting the channel-specific trigger setting mode according to the embodiment can systematically store the stored signal data according to the trigger setting, and can provide the user to easily monitor the stored signals.

1 is an internal block diagram of a multi-channel oscilloscope supporting a channel-specific trigger setting mode according to an embodiment of the present invention.
FIG. 2 shows a front view of a multi-channel oscilloscope supporting a channel-specific trigger setting mode according to an embodiment of the present invention.
3 shows the appearance of an oscilloscope module according to an embodiment of the present invention.
4 illustrates a process of processing input signal data of an oscilloscope module according to an embodiment of the present invention.
FIG. 5 shows input signals stored when a trigger is set for each independent group according to an embodiment of the present invention and a trigger is set for each group.
FIG. 6 shows a state where an input signal is stored when a trigger is set for each channel in a group according to an embodiment of the present invention and a trigger is set for each channel.
7 is an internal block diagram of a computing device that monitors stored signals and performs various user settings, in accordance with an embodiment of the present invention.
8 is a flowchart illustrating a process of providing a trigger setting mode for each group and each channel according to an embodiment of the present invention.
9 shows a screen for monitoring an input signal according to an embodiment of the present invention.
FIG. 10 shows a screen for providing a group setting and a trigger setting mode for each group and each channel according to an embodiment of the present invention.
11 illustrates a screen for monitoring a stored signal according to an occurrence of a trigger according to an embodiment of the present invention.
12 shows a screen for monitoring a plurality of signals in a group stored according to the trigger occurrence according to the embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms. In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning. Also, the singular expressions include plural expressions unless the context clearly dictates otherwise. Also, the terms include, including, etc. mean that there is a feature, or element, recited in the specification and does not preclude the possibility that one or more other features or components may be added. Also, in the drawings, for convenience of explanation, the components may be exaggerated or reduced in size. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

<Multi-channel oscilloscope configuration>

FIG. 1 is an internal block diagram of a multi-channel oscilloscope supporting a trigger setting mode for each channel according to an embodiment of the present invention. FIG. 2 is a front view of a multi-channel oscilloscope supporting a trigger setting mode according to an embodiment of the present invention. .

1 and 2, a multi-channel oscilloscope 200 (hereinafter, referred to as a "multi-channel oscilloscope 200") that supports a channel-specific trigger setting mode according to an embodiment in a structural aspect includes a case 201, A main computing module disposed in the case 201, an oscilloscope module 240, a main control module, and a storage module.

The multichannel oscilloscope 200 that supports the channel-specific trigger setting mode divides the components in terms of functions. The multichannel oscilloscope 200 includes a main processor 210, a storage 220, a main control unit 230, a plurality of oscilloscope modules 240, (250).

- Case

More specifically, the multi-channel oscilloscope 200 may include a case 201 configured with space and interface slots for mounting the modules.

The case 201 may be opened at least one side to include a space in which modules are to be mounted, and a plurality of slots may be disposed for connecting with the modules to perform data input / output. For example, case 201 may include a plurality of slot PXIe chassis providing PCIe links, single and dual port PXIe system modules and PC host cards, and PXIe embedded controllers.

- Main computer module

In at least one slot of the case 201, a main computer module including a main processor 210, a main memory, and an interface unit 250 may be mounted. The main computer module may include a main processor, a main processor 210 mounted on the main board, a main memory, and the like, and a connector connectable to a slot of the case 201 may be disposed at one end of the main board. In addition, an interface unit 250 including an Ethernet port, a USB port, a display port, and the like may be disposed on a front panel of the main computer.

The main processor 210 and the main memory 230 and the storage 220 by reading the operating system and the oscilloscope related program of the main processor 210 and the main memory and controlling the oscilloscope module 240, the interface unit 250, the main control unit 230,

The main processor 210 may provide the user with a setting interface such as a group setting and a trigger setting through the computing device 100 or the input device and may transmit group and trigger settings to the main control unit 230 and the oscilloscope module (240).

The main processor 210 may then store the triggering signal and group signals and transmit the stored signal data to the display device and / or the computing device 100 to monitor the signals over multiple channels.

In the embodiment, the user monitors signals, performs grouping, and sets triggers for each group / channel through a separate computing device 100 connected to the multi-channel oscilloscope 200. However, according to embodiments, The main computer module of the multi-channel oscilloscope 200 may directly serve as the computing device 100.

In detail, the main memory may store an operating system and a plurality of application programs running on the multi-channel oscilloscope 200, data for operating the terminal, and commands. The application program may be stored in the memory and operated by the main processor 210 to perform the operation (or function) of the terminal. Further, the memory may be various storage devices such as a ROM, a RAM, an EPROM, a flash drive, a hard drive and the like in hardware.

The main processor 210 may be a microprocessor unit (MPU). The main processor 210 can provide or process appropriate information or functions to the user by processing signals, data, information, etc., input or output through the above-mentioned components, or by driving application programs stored in the memory.

The interface unit 250 may provide a data input / output interface with the computing device 100, the display device, and / or the input device. The interface unit 250 may include an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / An input / output port, and a video input / output (I / O) port. In the terminal, corresponding to the connection of the external device to the interface unit 250, it is possible to perform appropriate control related to the connected external device.

- Oscilloscope module (240)

In addition, a plurality of oscilloscope modules 240 can be mounted in the slots of the case 201. [

3, the oscilloscope module 240 according to the embodiment includes a main board 243, a controller on the main board 243, a plurality of channel terminals 241 for receiving an external signal, An interface port 242 and a connector 244 for interfacing with a slot of the case 201. [

Here, the controller may be a user-definable micro controller unit (MCU), and may include a RAM and ROM as a storage device of a predetermined capacity, a CPU as a computing device, and an input / output control circuit such as an AD / DA converter .

In an embodiment, the controller may be a field programmable gate array (FPGA), a semiconductor device comprising a programmable logic element and a programmable internal line.

Such a controller may receive signals from a plurality of channel terminals 241, respectively, and may convert the input analog signals into digital signals to generate signal data. The controller counts the converted signal data, detects the trigger occurrence, stores the signal data for a predetermined period, and transmits the stored signal data to the sub memory when the trigger is generated or when the trigger of the associated signal is generated Can be customized.

- signal data processing of the oscilloscope module 240

Referring to FIG. 4, a process of processing signals input from one channel terminal 241 by the controller of the oscilloscope module 240 and the main controller 230 will be described in detail.

First, the controller can receive an analog signal input through a channel and convert it into digital signal data. (S101)

At this time, the controller can count the channel number of the channel to which the signal is input and the input time of the input signal data. (S102)

The controller can store the signal data input in real time in the memory buffer for a predetermined time. (S103)

At this time, the controller can count the storage time for each signal data sample stored for each storage area of the memory buffer. (S104)

When the controller receives the information on the trigger occurrence point, the controller corrects the buffer storage time point at the trigger occurrence point and extracts the signal data sample at the accurate trigger occurrence time point from the memory buffer.

In addition, the controller may sequentially delete the signal data that exceeds the predetermined time after storing the signal data for a predetermined time. Here, the reason why the controller stores the signal data for a predetermined period of time is to grasp the characteristic diagram of the signal data before the trigger condition is generated, and when the trigger condition occurs in the signal data input from another grouped channel, It is also for storing signal data.

In addition, the controller can determine whether or not a trigger has occurred in the signal data converted in the real time. (S105) That is, the controller can determine whether or not the signal data inputted in the channel satisfies the trigger condition.

Here, a trigger may be set to be received from the main processor 210 and / or the main control unit 230 according to a signal characteristic set by the user for the channel.

In detail, the trigger means that the user has set a specific characteristic of one or more input signals generated at a specific time.

These triggers may be set based on a logical combination of events occurring in the time domain, the frequency domain, the RF time domain, or the modulation domain.

For example, a trigger for a time domain signal may include edges, widths, timeouts, pulsewidths, logic, setup / hold, rise time, ), A fall time, video, and a bus.

Further, a trigger for the frequency domain signal may be set based on at least one of a frequency mask, and a frequency density.

The trigger for the modulated domain signal may also include a constellation mask event, an errovector magnitude (EVM), a magnitude error, a phase error, a complementary cumulative distribution function distribution function, CCDF), a modulation error rate, and a symbol error count / rate.

Hereinafter, the trigger will be limited to a case where an edge signal equal to or higher than a predetermined trigger level set by the user is generated for the time domain signal. For example, the channel-specific trigger setting information may include a trigger characteristic (for example, an edge) for each channel, a trigger level for generating a signal characteristic, and a time length before and after a trigger occurrence.

In the embodiment, there are two cases when a trigger occurs and the signal data is determined. The first case is when the controller detects a trigger occurrence directly from the input signal in the channel, and the second is when a trigger occurs in a signal input from another channel of the channel group.

The first case is described first, and the controller can detect the trigger from the signal data.

Upon detecting the occurrence of the trigger, the controller stores the trigger occurrence information including the channel number of the input channel of the signal in which the trigger is generated and the trigger occurrence point, and transmits the trigger occurrence information to the main control unit 230. (S106)

Upon receipt of the trigger occurrence information, the main control unit 230 can detect the channels grouped with the corresponding channel number and the oscilloscope having the corresponding channel through the group setting information. (S107)

In detail, the user can group the channels into which the associated signals are input to group together the associated signals. And the user may set a trigger for at least one of the group channels. At this time, the multi-channel oscilloscope 200 can provide a trigger setting function for each channel in the group that can set different triggers for each channel in the group.

In this way, it is possible to provide a trigger setting function for each channel, per group, and group in the group through group setting information and trigger setting for each channel in the group by user setting.

The main controller 230 reads the group setting information and extracts the channels of the group of the channel in which the trigger is generated and then transmits the group setting information to the oscilloscope module 240 having the extracted channels Trigger occurrence information can be transmitted. (S107)

At this time, the main control unit 230 also transmits the trigger generation information to the oscilloscope module 240 having the triggered channel, stores the signal data in accordance with the trigger generation information, and stores the difference in storage time delay with other channels Can be minimized.

That is, the main control unit 230 simultaneously transmits trigger generation information to the group channels associated with the triggered channel and the triggered channel, and all the group channels simultaneously store the signal data according to the trigger generation information So that the delay difference in data communication time can be minimized.

In detail, the main control unit 230 transmits the trigger generation information and the channel number of the group to be stored in all of the oscilloscope modules 240 having the triggered channel and the channel group channels so that the oscilloscopes It is possible to control to store the signal data before and after the trigger occurrence time input by the channel corresponding to the channel number.

In view of the oscilloscope module 240, the controller that receives the group channel number and the trigger generation information from the main control unit 230 determines whether or not a sample corresponding to a predetermined storage interval before and after the trigger generation point The signal data can be determined. (S108)

More specifically, the controller can determine a signal data sample of a predetermined storage interval based on a sample storage point after specifying a trigger occurrence point in the memory buffer.

The controller may extract signal data corresponding to the storage interval before and after the determined trigger occurrence time from the memory buffer, and then transmit the extracted signal data to the sub memory of the storage 220 to store the signal data.

The storage 220 may store signal data received from the oscilloscope modules 240 having group channels as a log group signal data.

Then, the main processor 220 transmits the group signal data stored in the storage 220 to the computing device 100 (100) at the trigger occurrence time or at the synchronization interval so that the user can monitor the signal data of the group channels in which the trigger is generated .

The second case of storing the signal data is a case where a trigger is generated in another channel of the group and the trigger generation information is received from the main control unit 230. [

More specifically, when the trigger of the other channel in the group is generated and the trigger generation information is received from the main control unit 230, the controller extracts and stores the signal data for the channel to be stored in the memory buffer, have.

In this manner, the oscilloscope modules 240 and the main control unit 230 process the signals inputted in the multiple channels systematically according to the group setting and the trigger setting for each channel in the group, It is possible to provide multi-channel input signal monitoring function through trigger setting for each channel.

More specifically, the multi-channel oscilloscope 200 can set the groups and triggers for each channel to set a trigger on each of a plurality of channels in the group, and store signal data for trigger generation independently for each channel.

For example, referring to FIG. 5, a multi-channel oscilloscope can set trigger for each channel for each non-associated signal. In detail, in order to separately set trigger settings for each channel when inputting non-associated signals from the first channel to the fourth channel, the user sets the first channel to the fourth channel to different groups, A trigger can be set for each of the first through fourth channels.

In this case, even if the first channel to the fourth channel are channels of one oscilloscope module 240, the oscilloscope module 240 can detect triggers for each channel, so that the trigger characteristic, the trigger level, Storage intervals can be set differently.

Therefore, as shown in FIG. 5, it is possible to set different triggers for each channel, and the signal data can be extracted and stored as shown on the right according to the trigger setting information in each channel when the trigger is generated.

In addition, the multi-channel oscilloscope 200 can provide a group-specific trigger setting function through a group-by-group trigger setting in which a plurality of groups are set and a trigger is set for each in-group channel when a plurality of related signal groups are set have.

For example, referring to FIG. 6, the user inputs related signals to the first channel and the second channel as shown on the left side, and other related signals to the third channel and the fourth channel, I want to set trigger for each 4 channels.

At this time, the user can set the first channel and the second channel as the first group and the third channel and the fourth channel as the second group through the group setting mode of the multi-channel oscilloscope 200.

The user can set different triggers on the respective channels of the first channel and the second channel among the first channel and the second channel, store the signal of the second channel in the first channel when the trigger is generated, May be provided.

However, as shown in FIG. 6, when the first trigger is generated in the second channel and the second trigger is generated in the first channel within the storage interval time while storing the signal data input to the first channel and the second channel according to the first trigger , It may not be able to store signal data according to the second trigger on the data processing characteristics of the controller of the oscilloscope module 240 and the main controller 230. [ However, when the storage interval and the trigger occurrence probability are considered, such a case will occur very rarely, and it will not be a problem because it is possible to check the generation of the remaining triggers by checking the group signal data according to the trigger occurrence.

In the case of the third channel and the fourth channel, when a signal is input as shown on the left, storage intervals do not overlap each other. Therefore, when a third trigger is generated in a signal input from the third channel, Can be stored as the right side according to the trigger setting information of the third channel. When the fourth trigger is generated in the signal input from the fourth channel, the signal data input to the third channel and the fourth channel can be stored as the right according to the trigger setting information of the fourth channel.

As such, the signal data for the stored group signals according to the occurrence of the trigger may be transmitted to the computing device 100 and may be verified according to the user's input at the computing device 100.

<Computing Apparatus 100>

7, a computing device 100 for monitoring an input signal of an oscilloscope according to an embodiment includes a display 110, an input device 140, a peripheral interface 120, a memory 190, a computer processor 180 &lt; / RTI &gt;

First, the display 110 and input device 140 may be separate devices from the computing device 100 and may be coupled to the computer processor 180 via the I / O subsystem. The display 110 may output signals input from the multi-channel oscilloscope 200, or may output a screen for grouping channels and setting triggers on a channel-by-channel basis. Then, the input device 140 may detect an input according to a user's operation to a device such as a mouse or a keyboard and transmit the input to the computer processor 180. That is, the display 110 and the input device 140 may provide a graphical user interface, provide a trigger setting interface for each channel / group, and a multi-channel input signal monitoring interface.

The computer processor can systematically store the input group signal data in the memory 190 according to time so that group signal data stored after a predetermined time can be easily confirmed.

<Multi channel input signal monitoring method by trigger setting per group / channel>

A detailed description will be given of a process in which the computing device 100 and the multichannel oscilloscope 200 mutually exchange signal data and monitor a signal with reference to FIG.

First, the multi-channel oscilloscope 200 can transmit signal data input through the channels of the oscilloscope module 240 to the computing device 100 in real time. (S201)

The computing device 100 receiving the signal data may output the signal data waveform of the selected channel according to the channel selection of the user so that the user can monitor the waveform of the signal input through the channel in real time. (S202)

That is, the computing device 100 may output real-time input signals input on a channel-by-channel basis, so that the user can check the signal before trigger setting and make appropriate trigger setting or group setting.

For example, referring to FIG. 9, when the user selects a specific channel, the computing device 100 may output a signal input from a specific channel so that the user can confirm the signal. The user can check the signals input to the channel and check the associated signals to proceed with the group setting and proceed with trigger setting such as appropriate trigger level, trigger characteristics, and the like.

The computing device 100 may output a group setting and a trigger setting screen, and may provide a group setting and a trigger setting user interface in response to a user input. (S203)

 In detail, the computing device 100 may first provide a group setting interface that binds channels for inputting associated signals.

The user can group the channels for inputting the related signals through the group setting interface and group them together for monitoring.

Referring to FIG. 10, the computing device 100 simply lists characteristics, numerical values, and the like of signals input on a channel-by-channel basis, groups at least one channel into a group by selecting at least one channel among the channels listed The group setting interface 31i can be provided.

In addition, the computing device 100 may provide an in-group channel-specific setting interface for displaying channels within a group and trigger setting for each channel.

10, when the group 1 is selected, a list of channels belonging to the group 1 is displayed. When each channel is selected from the channel list, the signal data inputted to the channel is displayed. When the user confirms the displayed signal data, Characteristics, a trigger level, a storage interval, and the like.

The computing device 100 transmits the group setting information set by the user and trigger setting information for each channel in the group to the multichannel oscilloscope 200 so that the multichannel oscilloscope 200 can perform trigger setting for each group and each channel Can be performed. (S204)

The multichannel oscilloscope 200 stores the group setting information set by the user and the trigger setting information for each channel and transmits the stored trigger setting information to each of the oscilloscope module 240 and the main control unit 230, Trigger can be set per star / channel.

Thereafter, the one-oscilloscope module 240 can detect occurrence of a trigger according to the previously set trigger setting information. (S205)

In detail, the oscilloscope module 240, which detects the occurrence of the trigger, stores the channel number of the triggered channel and the trigger occurrence time as trigger occurrence information, and transmits the trigger occurrence information to the main control unit 230.

The main control unit 230 receiving the trigger occurrence information can detect group channels grouped with the corresponding channel number through the group setting information.

The main control unit 230 reads the group setting information in the storage 220 to extract the channel numbers of the channels in the group to which the triggered channel belongs and then extracts channel numbers of all the extracted channels to the oscilloscope module 240 having the extracted channels Trigger occurrence information including numbers and a trigger occurrence point can be transmitted.

At this time, the main control unit 230 also transmits the trigger generation information to the oscilloscope module 240 having the triggered channel to store the signal data in accordance with the trigger generation information, so that the storage time delay difference Can be minimized.

The controller receiving the group channel number and the trigger occurrence information from the main control unit 230 can determine the sample signal data for the storage interval before and after the trigger occurrence time in consideration of the sample storage time in the memory buffer. (S206)

More specifically, the controller can determine, in the memory buffer, signal data samples as long as the storage interval before and after the trigger occurrence time, and transmit the determined signal data to the sub memory of the storage 220 to store the data as log data. (S207)

That is, the multi-channel oscilloscope 200 can transmit the log data including the group signal data triggered at the time of the trigger occurrence and the trigger occurrence point to the computing device 100.

The computing device 100 receiving the log data can store the log data in the group-specific file according to the trigger generation time sequence. (S208)

More specifically, the computing device 100 sequentially stores the received group signal data in a group-by-group file, and then opens a group-specific file. Then, the computing device 100 displays a list of the group, information on the trigger occurrence time, The signal data for the trigger and the channel can be output.

For example, the computing device 100 may integrate log data sequentially input for a predetermined period of time (for example, one day), generate a log file, and store the log data in the corresponding group folder.

Then, the user can open a log file through the computing device 100 and monitor the trigger occurrence of a signal input to the multi-channel. (S209)

More specifically, when the computing device 100 selects a group folder and opens a log file storing log data for a predetermined period, the computing device 100 provides the log file with the signal data corresponding to the trigger occurrence for a predetermined period to be sequentially browsed .

Referring to FIG. 11, the computing device 100 displays a screen on which one group file is opened. On the group file output screen, a channel list belonging to the group and a trigger occurrence information list can be displayed. When one trigger occurrence information is selected from the trigger occurrence information list and one channel is selected from the channel list, the user outputs a waveform for the signal input to the selected channel at the time of generation of the selected trigger occurrence information, Can be monitored.

Referring to FIG. 12, the computing device 100 displays a screen on which one group file is opened. On the group file output screen, a channel list belonging to the group and a trigger occurrence information list can be displayed. When the user selects one trigger generation information from the trigger generation information list, waveforms corresponding to the signals input to all the channels in the group are output at the time of generation of the selected trigger generation information, and all the signals (CH1, CH2, CH3 , CH5) can be monitored.

The embodiments of the present invention described above can be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer-readable recording medium may be those specifically designed and configured for the present invention or may be those known and used by those skilled in the computer software arts. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROM and DVD, magneto-optical media such as floptical disks, medium, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code, such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be modified into one or more software modules for performing the processing according to the present invention, and vice versa.

The specific acts described in the present invention are, by way of example, not intended to limit the scope of the invention in any way. For brevity of description, descriptions of conventional electronic configurations, control systems, software, and other functional aspects of such systems may be omitted. Also, the connections or connecting members of the lines between the components shown in the figures are illustrative of functional connections and / or physical or circuit connections, which may be replaced or additionally provided by a variety of functional connections, physical Connection, or circuit connections. Also, unless explicitly mentioned, such as &quot; essential &quot;, &quot; importantly &quot;, etc., it may not be a necessary component for application of the present invention.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

Claims (7)

A method of controlling a multi-channel oscilloscope supporting a channel-by-channel trigger setting mode performed by a multi-channel oscilloscope including a plurality of oscilloscope modules each having a main controller and a controller,
Establishing a group comprising at least one channel;
Setting a trigger for at least one of the channels in the group;
Determining a channel number and a trigger occurrence point of the channel when the controller detects a trigger occurrence in the triggered channel, and transmitting the channel number and the trigger occurrence point to the main control unit;
The main controller extracts group channel numbers of the group to which the channel number belongs according to the determined channel number, and transmits the group channel number and the trigger occurrence point including the group channel number and the trigger occurrence point to the oscilloscope modules having the channel of the group channel numbers Transmitting trigger occurrence information; And
Wherein the controller of the oscilloscope module that has received the trigger occurrence information extracts the signal data according to the trigger occurrence information, and transmits the extracted signal data to the storage
A control method of a multi-channel oscilloscope supporting a trigger setting mode for each channel. The method according to claim 1,
Wherein triggering for at least one of the channels in the group comprises:
Performing different trigger settings for at least two of the channels in the group,
The trigger setting includes at least one of setting for a trigger characteristic, a trigger level, and a storage interval before and after a trigger occurrence time
A control method of a multi-channel oscilloscope supporting a trigger setting mode for each channel. The method according to claim 1,
Wherein when the controller detects a trigger occurrence in the triggered channel, the step of determining the channel number of the channel and the trigger occurrence point and transmitting the trigger number to the main control unit comprises:
Converting the analog signal input through the channel to digital signal data by the controller; counting the signal data conversion time; temporarily storing the converted signal data in a memory buffer; Further comprising the step of counting a storage time point at which a sample of the signal data is stored
A control method of a multi-channel oscilloscope supporting a trigger setting mode for each channel. The method of claim 3,
Wherein the transmitting the trigger generation information including the group channel number and the trigger generation time to the oscilloscope modules having the channels of the group channel numbers comprises:
And the main controller transmits the trigger generation information to the oscilloscope module having the triggered channel
A control method of a multi-channel oscilloscope supporting a trigger setting mode for each channel. 5. The method of claim 4,
Wherein the controller of the oscilloscope module that has received the trigger occurrence information extracts the signal data according to the trigger occurrence information and transmits the extracted signal data to the storage,
Wherein the controller determines in the memory buffer of the channel corresponding to the group channel number a signal data sample for a storage interval before and after the trigger occurrence time based on a storage time of the memory buffer
A control method of a multi-channel oscilloscope supporting a trigger setting mode for each channel. The method according to claim 1,
The main control unit further comprises transmitting the signal data stored in the storage together with the log information to the computing device via the interface unit
A control method of a multi-channel oscilloscope supporting a trigger setting mode for each channel. A case providing a receiving space of the module;
A main computer module mounted in the case and including a main processor, which is a microprocessor unit (MPU), a main memory, and an interface unit;
A plurality of oscillator modules (MPUs) mounted in the case, the controller being a micro controller unit (MPU) that processes a plurality of channels receiving an external signal and an external signal input from the plurality of channels to generate signal data; ;
A main control module including a main control unit mounted in the case and being a micro controller unit (MPU) for integrally controlling the plurality of oscilloscope modules; And
And a storage module mounted in the case and storing signal data transmitted from the oscilloscope module,
Wherein the controller of the oscilloscope module transmits to the main control unit a channel number of the channel in which the trigger is generated and a trigger occurrence time when a trigger occurrence according to a predetermined trigger setting is detected,
Wherein the main control unit extracts a group channel in a channel in which the trigger is generated according to preset group setting information and transmits the trigger generation point and a channel number of the extracted group channel to the oscilloscope modules having the extracted group channel To transmit
Multi-channel oscilloscopes with trigger-specific trigger mode.

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