KR101741738B1 - Apparatus for displaying multiple frequency of electromagnetic measurement system, and Method and computer program for the same - Google Patents

Abstract

The present invention relates to a multiplying frequency display device for an electromagnetic wave measuring system and the like. After receiving a first peak signal selection input and a second peak signal selection input on an electromagnetic wave level output screen, a frequency interval between the two peak signals is calculated The resonance frequency is calculated, the frequency obtained by adding an integer multiple of the resonance frequency to the first peak frequency is determined as the multiplication frequency, and then the multiplication frequency line is displayed on the electromagnetic wave level output screen to facilitate identification of the multiplication frequency signal.

Description

TECHNICAL FIELD [0001] The present invention relates to a multiplying frequency display apparatus, a method, and a computer program for a electromagnetic wave measuring system,

The present invention relates to a multiplying frequency display device for an electromagnetic wave measuring system and the like.

Measurement of the degree of influence of noise or electromagnetic waves generated in an electronic device on the human body or other electronic devices is referred to as an electromagnetic wave measurement or an electromagnetic compatibility test (EMC).

As electronic devices become more and more digital and faster, the circulating currents in the circuits of electronic devices have increased, and electronic devices have become more likely to generate more noise and electromagnetic waves.

For this reason, regulations are being tightened against electromagnetic noise or electromagnetic waves generated in electronic devices, and various electromagnetic measurement systems for measuring whether electronic devices satisfy such regulations are being proposed.

Among electromagnetic measurement systems, there is a system for measuring conducted noises (Conducted Emissions), and a system for measuring radiated emissions. Noises or electromagnetic waves generated in electronic devices can be propagated to other electronic devices through wired lines such as a power source. Measuring the noise propagated to other electronic devices through a wire connected to the electronic device is called conductive noise measurement. Alternatively, an electronic device can radiate noise or electromagnetic waves into the air according to the flow of electromagnetic energy in the circuit. The measurement of noise or electromagnetic waves radiated to the air is called a radio noise measurement.

On the other hand, the radioactive noise is received through a separate antenna for electromagnetic wave measurement and transmitted through the wire, and the magnitude of the electric signal propagated through the wire is small. It is necessary to convert the electric signal of such small size into an electric signal of a noise floor or more present in the surroundings and transmit the electric signal to the electromagnetic wave measuring signal analyzer.

In this electromagnetic wave measuring system, a sample device to be subjected to electromagnetic wave measurement is placed in an electromagnetic anechoic chamber subjected to electromagnetic wave shielding and absorption processing, and electromagnetic waves generated in the sample device are received through an antenna in the electromagnetic anechoic chamber, Analyze through an external signal analyzer (possibly a computer).

In such an electromagnetic wave measurement environment, the engineer views signal analysis result information through a signal analyzer installed in a control room outside the electromagnetic anechoic chamber, and grasps electromagnetic wave emission characteristics of the sample device.

The electromagnetic wave measuring system includes a turntable, a mast, a Line Impedance Stabilization Network (LISN) converter and the like, which are disposed in an anechoic chamber, and a plurality of individual devices are organically connected to each other. A positioner disposed outside the anechoic chamber, a signal converter for converting a signal received and transmitted from the RF selector and the antenna, and a test receiver for finally receiving and analyzing the converted signal, And a main controller for overall control.

Meanwhile, the main controller is a host computer in which an electromagnetic wave measurement integrated control software, which is software for controlling the overall operation of the electromagnetic wave measurement system, is installed, and the types, parameters, etc. of various individual instruments constituting the electromagnetic wave measurement system are set .

In the integrated control software used in such a main controller, there is an electromagnetic wave level output screen for controlling various output screens for displaying the state of the electromagnetic wave to be measured and outputting intensity (level) of the electromagnetic wave measured as one of the output screens.

On the other hand, the generated electromagnetic waves are sequentially generated by a first peak having the highest level and a second peak and a third peak lower than the first peak at a constant frequency interval due to a resonance phenomenon or a harmonic phenomenon.

At this time, the frequency interval between the peaks becomes the resonance frequency f, and the frequencies of the second and third peaks, which are N times the resonance frequency at the first peak, are called multiple frequencies.

In the conventional electromagnetic wave output screen, only the measured peak signals of electromagnetic waves are merely displayed. In order to recognize the multiplication frequency, the resonance frequency, which is a frequency interval between the respective peaks, must be measured and added to the first peak frequency.

Accordingly, the present invention provides a technique capable of providing a user interface that allows the integrated control unit of the electromagnetic wave measuring device to easily identify the multiplication frequency.

In view of the foregoing, it is an object of the present invention to provide a user interface capable of easily identifying a multiplication frequency of an electromagnetic wave signal on an electromagnetic wave level output screen of the electromagnetic wave measurement system.

It is another object of the present invention to provide an electromagnetic wave measuring integrated control software capable of easily confirming the multiplication frequency of generated electromagnetic waves by automatically displaying the multiplication frequency when the first peak frequency and the second peak frequency are designated in the electromagnetic wave measuring system .

In order to achieve the above object, in one aspect, the present invention is a multiplying frequency display device included in an electromagnetic wave measuring system, comprising: a first peak selecting signal for selecting a first peak signal having a maximum level in an electromagnetic wave level output screen; A peak selection signal input unit receiving a second peak selection signal for selecting a second peak signal having a next large level; A peak signal determination unit for determining the first peak signal and the second peak signal using the first peak selection signal and the second peak selection signal; A frequency interval between the first peak frequency of the first peak signal and the second peak frequency of the second peak signal is calculated as a resonance frequency and a frequency obtained by adding an integer multiple of the resonance frequency to the first peak frequency is determined as a multiplication frequency A calculating unit; And a multiplication frequency line display unit for generating and outputting a multiplication frequency line representing the multiplication frequency calculated on the electromagnetic wave level output screen.

According to another embodiment of the present invention, there is provided a multiplying frequency display method included in an electromagnetic wave measuring system, comprising: a first peak selecting signal for selecting a first peak signal having a maximum level in an electromagnetic wave level output screen; A peak selection signal input step of receiving a second peak selection signal for selecting a second peak signal; A peak signal determination step of determining a first peak signal and a second peak signal using a first peak selection signal and a second peak selection signal; A frequency interval between the first peak frequency of the first peak signal and the second peak frequency of the second peak signal is calculated as a resonance frequency and a frequency obtained by adding an integer multiple of the resonance frequency to the first peak frequency is determined as a multiplication frequency Calculating step; And a multiplication frequency line display step of generating and outputting a multiplication frequency line representing a multiplication frequency calculated on the electromagnetic wave level output screen.

According to another aspect of the present invention, there is provided an antenna apparatus comprising: an antenna assembly and a turntable provided inside an electromagnetic anechoic chamber; a positioner provided outside the electromagnetic anechoic chamber; an RF selector; individual equipment including a test receiver; A computer program for displaying a multiplied frequency, which is used in a main controller of an electromagnetic wave measuring system including a main controller for controlling the overall frequency of the electromagnetic wave, comprising: a first peak signal having a maximum level in an electromagnetic wave level output screen; A peak selection signal input function for receiving a first peak selection signal for selecting a first peak selection signal and a second peak selection signal for selecting a second peak signal having a next large level; A peak signal determination function for determining a first peak signal and a second peak signal using a first peak selection signal and a second peak selection signal; A frequency interval between the first peak frequency of the first peak signal and the second peak frequency of the second peak signal is calculated as a resonance frequency and a frequency obtained by adding an integer multiple of the resonance frequency to the first peak frequency is determined as a multiplication frequency Output function; And a multiplication frequency line display function for generating and outputting a multiplication frequency line representing the multiplication frequency calculated on the electromagnetic wave level output screen.

As described below, according to the present invention, there is an effect that the electromagnetic wave measurement integrated control software that integrates and controls a plurality of individual devices can easily identify the multiplication frequency of the measured electromagnetic wave.

More specifically, when the first peak frequency and the second peak frequency are specified in the electromagnetic wave measuring system, the multiplication frequency line is automatically displayed, so that the multiplication frequency of the generated electromagnetic wave can be easily confirmed.

Further, by providing a marker information pop-up window for displaying signal information (frequency, level, etc.) of a signal in which the marker is located on the electromagnetic wave level output screen, specific information on a desired measurement signal can be easily recognized.

1 is an overall configuration diagram of an electromagnetic wave measuring system to which an embodiment of the present invention can be applied.
FIG. 2 shows a method of confirming the multiplication frequency in the electromagnetic wave level output screen in the conventional electromagnetic wave measuring system.
3 is a functional block diagram of a multiplying frequency display device in an electromagnetic wave measuring system according to the present invention.
Fig. 4 shows an example of a display method by the doubled frequency display device of the present invention.
FIG. 5 shows an arrangement for further providing a marker information pop-up window in addition to the multiplication frequency line as another embodiment of the present invention.
FIG. 6 shows an example further including an enlarging function of the signal graph in addition to the multiplication frequency line according to the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to denote like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

1 is an overall configuration diagram of an electromagnetic wave measuring system to which an embodiment of the present invention can be applied.

1, the electromagnetic wave measuring system 100 to which the present invention can be applied may be any electric device capable of generating electromagnetic waves, such as a mobile communication terminal, a computer, a television, a printed circuit board on which electronic parts are mounted And is a system for measuring the electromagnetic wave generated by the sample device 10 having the antenna.

Generally, an electromagnetic wave measuring system measures electromagnetic interference (EMI) measuring systems for measuring the degree of electromagnetic interference (EMI) generated by an electronic device and a system for measuring the degree of durability or immunity of an electronic device against electromagnetic waves generated from the outside And an Electro-Magnetic Susceptibility (EMS) measurement system. Electro-Magnetic Compatibility (EMC) measurement systems may be used as a collective expression of these two types.

One embodiment of the present invention can be applied to both the electromagnetic interference (EMI) measurement system and the electromagnetic immunity (EMS) measurement system. For convenience, the electromagnetic interference (EMI) measurement system will be described below as an example.

The EMI measurement system 100 to which the embodiment of the present invention is applied is constituted by a plurality of individual equipments arranged in an electromagnetic anechoic chamber or a chamber, and the individual equipments include an inner individual equipment disposed in the electromagnetic anechoic chamber and an anechoic chamber And includes external individual equipment disposed externally.

More specifically, the internal individual equipment constituting the EMI measurement system 100 includes an antenna assembly 110 including an antenna 112 for receiving electromagnetic waves emitted from a measurement target device and an antenna master 114 for moving the antenna A turntable 120 for mounting the measurement target device, a line impedance stabilization network (LISN) converter 130, and the like.

The external individual equipment disposed outside the chamber may include a positioner 150 for controlling the operation of the antenna mast and / or the turntable, an RF selector 160 for selecting one channel among the signal channels of various paths, A signal converter 170 for converting and / or amplifying a signal transmitted through the selected channel, and a test receiver 180 for finally receiving and analyzing the converted signal.

In addition, there is a main controller 190 that controls the operation of the individual devices as a whole. The main controller is a kind of computer device, and an integrated control program or an integrated control software for controlling the operation of individual devices is installed and operated .

Although the electromagnetic interference (EMI) measurement system is exemplified and described in the present specification, the present invention is not limited thereto and may be applied equally to other kinds of electromagnetic wave measurement systems including an electromagnetic immunity (EMS) measurement system.

The antenna assembly 110 includes an antenna for sensing an electromagnetic wave generated by an equipment under test (EUT) as a measurement target device in each frequency band, and an antenna mast (antenna mast) for controlling the position and direction of the antenna ).

The turntable 120 is a platform on which the EUT as a measurement target device is mounted. The turntable 120 has a function of rotating the measurement target device 360 degrees while measuring the electromagnetic interference while rotating the measurement target device.

The positioner 150 may be represented by an antenna master controller or a turntable controller and is a meter for adjusting the height of the antenna mast and the angle of the turntable within the electromagnetic anechoic chamber or the chamber. The positioner changes the height of the antenna master between 1m and 4m, generates a command to rotate the turntable between 0 ° and 360 °, and transmits the command to the antenna master and the turntable, respectively.

The RF selector 160 is a combination of switches that serve to change the path or channel of a signal received at the antenna.

The signal converter 170 or the preamplifier is an apparatus for amplifying a weak electromagnetic interference signal received from an antenna to facilitate analysis of a signal.

The test receiver 180 is a device for analyzing a signal received from an antenna through an RF selector and a preamplifier and displaying the result of the analysis, and finally displays a signal (Peak, Average, Quasi Peak, etc.) . These test receivers can be expressed in other terms such as spectrum analyzers, spectrum analyzers, frequency analyzers, and so on.

The main controller 190 is an apparatus for controlling the operation of each individual equipment by mounting the electromagnetic wave measurement integrated control software according to the present invention and outputting / displaying analyzed results or measured values through the test receiver.

Meanwhile, according to the embodiment of the present invention, the main screen of the main controller includes a device selection interface that can select a device type actually used among various specifications for each individual device, in addition to the graphic icons for each individual device described above.

There is also a screen for displaying the intensity or level of the frequency of the electromagnetic wave in the output screen of the main controller, and this is referred to as an electromagnetic wave level output screen in this specification.

In general, electronic devices such as a compressor, a TV tuner, a switching power, a CPU, and a memory, which are objects of electromagnetic wave measurement according to the present invention, have an operating frequency and an electromagnetic wave generated therefrom has a first peak having the highest level, ), A second peak, a third peak, etc. lower than the first peak are sequentially generated at a constant frequency interval.

At this time, the frequency interval between the peaks becomes the resonance frequency f, and the frequencies of the second and third peaks, which are N times the resonance frequency at the first peak, are called multiple frequencies.

That is, when an actual electronic component operates, it has a specific carrier frequency signal, and at this carrier frequency, the signal level is large and has a multiplication frequency periodically.

On the other hand, among the measured electromagnetic waves, it is necessary to identify whether it is a multiplying frequency signal corresponding to the multiplying frequency or a noise.

However, in a conventional conventional electromagnetic wave measuring system, such a multiplication frequency is not measured or displayed. Therefore, the user measures the interval between the peak signals individually to check whether a certain peak of the measured electromagnetic wave is a multiplying frequency signal, It is inconvenient to confirm whether it is the resonance frequency (f or? F)

That is, in the conventional electromagnetic wave output screen, only each peak state is displayed. In order to recognize whether it is a multiply frequency signal, it is inconvenient to measure the resonance frequency, which is a frequency interval between each peak signal, and to add it to the first peak frequency .

In the level graph of the frequency of the electromagnetic wave signal measured in the present specification, a signal region having a value that bounces constantly from a peripheral value is referred to as a peak signal, a frequency of the peak signal is expressed as a peak frequency, The peak signal is represented by the first peak signal, and the peak signal with the second largest level is represented by the second peak signal.

FIG. 2 shows a method of confirming the multiplication frequency in the electromagnetic wave level output screen in the conventional electromagnetic wave measuring system.

As shown in FIG. 2, in the electromagnetic wave level output screen of the conventional electromagnetic wave measurement system, the electromagnetic wave level for each frequency generated and measured from the measurement object is displayed in a graph.

2, the abscissa represents the frequency (MHz), and the ordinate represents the intensity or level (dB; μV / m) of the measured electromagnetic wave.

The electromagnetic wave measurement graph 200 includes a plurality of peak signals 210, 220, 230, 240, 250 and 260 having a signal level somewhat larger than that of the surroundings, With the peak signal 210, the next highest peak signal can be defined as the second peak signal 230.

The first peak signal 210, the second peak signal 230, and the third peak signal 250 are harmonic signals or multiplied frequency signals generated by the resonance phenomenon, and the interval therebetween is a resonance frequency or a harmonic frequency (f or? f), and the first peak frequency f1 which is the frequency of the first peak signal, the second peak frequency f2 which is the frequency of the second peak signal, and the third peak frequency f3) is a multiplication frequency.

At this time, the first peak signal 210 is an electromagnetic wave corresponding to the operating frequency of the measurement object, and the second peak signal 230 and the third peak signal 250 are generated by resonance with respect to the first peak signal A harmonic signal or a multiplied frequency signal.

In addition, peak signals 220 and 240 other than the multiplied frequency signal (1 to 3 peak signals) are other peak signals that are not generated normally due to the resonance of the operating frequency, . ≪ / RTI >

That is, the user needs to distinguish between the sine wave signal and the other peak signal among the various peaks of the electromagnetic wave level graph.

However, in the electromagnetic wave level output screen shown in Fig. 2, only the frequency-dependent levels of the electromagnetic waves are displayed in a graph, and any information indicating the multiplication frequencies f1, f2, f3, etc. or whether the specific peak signal is a multiplying- Not included. (F1, f2, and f3 in Fig. 2 are information that is displayed for convenience and is not displayed on the actual screen)

Therefore, it is difficult for the user to distinguish between the multipath frequency signal and the other peak signals, and there is an inconvenience in that it is necessary to calculate the common frequency separation interval by measuring the interval between each peak signal in order to confirm the resonance frequency? F.

Accordingly, the present invention is characterized in that, after receiving the first peak signal selection input and the second peak signal selection input on the electromagnetic wave level output screen, the frequency interval between the two peak signals is calculated to calculate the resonance frequency, A technique for facilitating identification of a doubled frequency signal by determining a frequency obtained by adding an integral multiple of the resonance frequency to a doubled frequency and then displaying a doubled frequency line on the electromagnetic wave level output screen.

3 is a functional block diagram of a multiplying frequency display device in an electromagnetic wave measuring system according to the present invention.

The multiplying frequency display apparatus 300 in the electromagnetic wave measuring system according to the present invention includes a peak selecting signal input unit 310, a peak signal determining unit 320, a multiplying frequency calculating unit 330, and a multiplying frequency line displaying unit 340 .

The marker information providing unit 350 may further include a marker information providing unit 350 for generating and outputting a marker information popup window for providing electromagnetic signal information on a portion where a pointer or a cursor or a marker is selectively displayed on the electromagnetic wave level output screen.

At this time, the electromagnetic wave signal information displayed on the marker information pop-up window may include frequency information, level information, and deviation information, but is not limited thereto.

The multiplied frequency display apparatus 300 according to the present invention may further include an enlarged display unit 360 for enlarging and displaying a region where the marker is located.

Hereinafter, the components of the multiplying frequency display device 300 in the electromagnetic wave measuring system according to the present invention will be further described.

The peak selection signal input unit 310 receives the first peak signal selection input and the second peak signal selection input input by the user.

More specifically, the peak selection signal input unit 310 includes a first peak selection signal for selecting a first peak signal having a maximum level in the electromagnetic wave level output screen and a second peak selection signal for selecting a second peak signal having a next larger level And receives a peak selection input.

At this time, the peak selection signal input unit 310 outputs the first peak selection signal and the second peak selection signal using the first position information and the second position information of the marker (pointer) sequentially arranged to the first peak signal and the second peak signal, The peak selection signal may be sequentially generated and transmitted to a peak signal determination unit 320 to be described later.

For example, when a user places a computer cursor, a pointer, or a marker on a specific point P of the electromagnetic wave level graph on the electromagnetic wave level output screen and then inputs a peak selection command, the peak selection signal input unit 310 selects the peak selection And receives an input.

The user inputs the first peak selection signal after placing the marker on the first peak signal having the maximum level through the peak selection signal input unit 310 and then placing the marker on the second peak signal having the next large level A second peak selection signal can be input.

The peak signal determination unit 320 determines the first peak signal and the second peak signal using the first peak selection signal and the second peak selection signal transmitted from the peak selection signal input unit 310. [

The first peak signal may be a peak signal having the greatest level among the electromagnetic waves emitted from the electronic device to be measured and may be a signal corresponding to the operating frequency of the electronic device and the second peak signal may be a harmonic peak signal for the first peak signal .

At this time, the peak signal determination unit 320 determines the peak signal that is the closest to the first position information at which the marker is located to be the first peak signal, and the peak signal that is the closest to the second position information, 2 peak signal.

The multiplication frequency calculator 330 determines the frequency interval between the first peak frequency of the first peak signal and the second peak frequency of the second peak signal as a resonance frequency and adds the integral multiple of the resonance frequency to the first peak frequency And determines the frequency as a multiplication frequency.

For example, when the first peak frequency and the second peak frequency are f1 and f2, respectively, and the interval between the first peak frequency and the second peak frequency is? F (= | f2-f1 |), And determines f1 +? F * n (n = 1, 2, 3 ...) as the multiplication frequency Fn.

Next, when the multiplication frequency Fn is calculated, the multiplication frequency line display unit 340 generates a multiplication frequency line representing the calculated multiplication frequency and outputs it on the electromagnetic wave level output screen.

The multiplication frequency line may be composed of a first vertical line passing through a peak point of the first peak signal and an i th vertical line spaced from the first vertical line by an integral multiple of the resonant frequency f.

Therefore, it is possible to distinguish the peak signal that is located exactly on the i-th vertical line or the busiest peak on the i-th vertical line as the i-th multiplied frequency signal or the i-th peak signal, can do.

The multiplied frequency line display unit 340 may display not only the multiplied frequency line but also the resonance frequency? F, which is the interval between the multiplied frequency lines.

The multiplied frequency display device 300 may be implemented by software or a program for displaying the multiplied frequency which is installed in the main controller included in the electromagnetic wave measuring system. C, C ++, JAVA, machine language, etc., which can be read by the CPU of the computer through the device interface of the computer.

The code may include a function code related to a function or the like that defines the functions described above and may include an execution procedure related control code necessary for a processor of the computer to execute the functions described above according to a predetermined procedure, Such code may further include memory reference related code as to what additional information or media the processor of the computer needs to execute the aforementioned functions, as well as which location (address) of the computer's internal or external memory should be referenced.

In addition, when a processor of a computer needs communication with another computer or a server remote to execute the software or the program for displaying the multiplied frequency that is coded to implement the above-described functions, Related communication codes such as how to communicate with any other computer or server on the remote using the communication module of the communication module, and what information or media should be transmitted or received during communication.

The functional program for implementing the present invention and the code and code segment related thereto may be implemented by programmers in the technical field of the present invention in consideration of the system environment of the computer that reads the recording medium and executes the program Lt; RTI ID = 0.0 > and / or < / RTI >

Examples of the computer-readable recording medium on which the above-described program is recorded include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical media storage, and the like.

In addition, the computer-readable recording medium on which the software for displaying the multiplied frequency as described above or the program is recorded may be dispersed in a computer system connected to the network so that computer-readable codes can be stored and executed in a distributed manner.

In addition, the main controller, which is a computer in which software or program for displaying multiplied frequency according to an embodiment of the present invention is installed or a recording medium on which such program is recorded, can be read by all the computing devices including general PCs And the like.

By using the multiplied frequency display apparatus 300 according to the present invention, the multiplied frequency line is displayed on the electromagnetic wave level output screen, so that the harmonic signal or the multiplied frequency signal among the plurality of peak signals and other peak signals (such as noise) It can be easily identified.

Fig. 4 shows an example of a display method by the doubled frequency display device of the present invention.

As shown in FIG. 4, an electromagnetic wave signal graph measured for each frequency is output on an electromagnetic wave level output screen, and an electromagnetic wave signal graph includes a plurality of peak signals 410, 420, 430, 440 and 450.

Of these peak signals, the first peak signal 410 is the maximum level signal corresponding to the operating frequency of the measurement object device, and the second peak signal 430 and the third peak signal 450 are the harmonic signals of the first peak signal And the remaining peak signals 420 and 440 are other peak signals such as noise and the like.

In this state, when the user places the cursor or marker 600 at a specific position P1 in the vertical direction of the first peak signal 410 having the largest level, the multiplying-frequency display apparatus according to the present invention changes the position P1 of the marker The first vertical line 510 is generated and displayed.

In this state, the peak signal determination section generates the first peak selection signal by clicking the first peak selection button (B1; 610) located at the upper part.

When the first peak selection signal is input, the first vertical line 510 is fixed and fixed to the first multiplication frequency line.

Next, when the user moves the marker to move to the vicinity of the second peak signal 430 whose level is the next largest and places it at the specific position P2 in the vertical direction of the second peak signal 430, After the display device recognizes the position P2 of the marker, the second vertical line 520 is generated and displayed.

In this state, when the second peak selection button B2 (620) at the upper part is clicked, the peak signal determination section generates the second peak selection signal, and when the second peak selection signal is inputted, And is fixed and fixed to the multiplication frequency line.

Next, when the multiplied frequency display button B3I 630 is clicked, the multiplication frequency calculator calculates the multiplication frequency corresponding to the first peak frequency f1 corresponding to the first fixed line 510 and the second peak frequency f1 corresponding to the second vertical line 520 2 peak frequency f2, the difference value is determined as the resonance frequency f, and the frequencies obtained by adding the integer multiple of the resonance frequency f to the first peak frequency f1 are calculated to determine the multiplication frequency.

When the multiplication frequencies are determined, the multiplication frequency line display unit generates a multiplication frequency line and displays vertical lines perpendicular to the corresponding multiplication frequency.

That is, in addition to the first vertical line 510, which is the first multiplication frequency line, and the second vertical line 520, which is the second multiplication frequency line, the third vertical line 530 and the fourth multiplication frequency And the fourth vertical line 540, which is a line.

At this time, the first peak frequency (f1 = 520 MHz), the second peak frequency (f2 = 543 MHz), the third peak frequency (f3 = 566 MHz), the fourth peak frequency (f4 = 589 MHz) And the resonance frequency (? F = 23 MHz), which is the interval between the peak frequencies, can be displayed together.

The peak selection signal input unit 310 of the multiplying frequency display apparatus according to the present invention is configured such that even when the marker 600 is not exactly on the vertical line of the first peak or the second peak, And a peak signal closest to the generated vertical line as the first peak signal and the second peak signal, respectively.

4, when the first peak selection button B1 610 is clicked in a state where the marker 600 is located at a specific position P1 'slightly deviated from the vertical direction of the first peak, a peak nearest to the position P1' The signal 410 may be recognized as the first peak signal, and the vertical line may be moved and fixed to correspond to the first peak.

By providing such a function, it is possible to easily select the first peak signal and the second peak signal even if the user does not correctly position the marker at the first peak or the second peak vertical position.

4, the first peak signal 410, the second peak signal 430, the third peak signal 450, and the fourth peak signal 450 are generated and displayed automatically, Signal 460, etc., and other peak signals 420 and 440 such as residual noise, etc. can be easily distinguished and identified.

Although not shown, the multiplied-frequency display apparatus according to the present invention may have a function of moving and arranging each of the multiplied-frequency lines in accordance with the accumulation when the accumulation of the electromagnetic wave level output screen is changed.

FIG. 5 shows an arrangement for further providing a marker information pop-up window in addition to the multiplication frequency line as another embodiment of the present invention.

As described above, the multiplying-frequency display apparatus according to the present invention generates a marker information pop-up window that provides electromagnetic wave signal information of a portion where a pointer or a cursor or a marker is located on an electromagnetic wave level output screen And a marker information providing unit 350 for outputting the marker information.

5, when the marker 600 'is positioned at a specific point in the signal graph in the state where the multiplication frequency line is displayed, the electromagnetic wave signal information of the part in which the marker is arranged, for example, frequency information, A marker information pop-up window 700 for displaying information and piece-of-track information can be displayed.

The electromagnetic wave signal information displayed on the marker information popup window 700 may include frequency (f = 555 MHz), level information (45 dB), and deviation information (-15 dB) of the electromagnetic wave signal in which the marker is located, The deviation amount information of the first peak signal or the adjacent peak signal may be a difference from the level of the first peak signal or the adjacent peak signal or may be a deviation from the first peak frequency or the adjacent peak frequency.

Thus, by displaying the marker information pop-up window 700, the user can position the marker on a specific portion of the signal graph to easily recognize concrete information about a desired measurement signal.

FIG. 6 shows an example further including an enlarging function of the signal graph in addition to the multiplication frequency line according to the present invention.

As described above, the multiplied-frequency display apparatus according to the present invention may further include an enlarged display unit 360 for displaying the area where the marker is located in addition to the function for displaying the multiplied-frequency line.

6, when the enlarged display button 640 is clicked in a state in which the multiplied frequency line is displayed, the enlarged display unit 360 generates an enlarged display area 800 similar to the magnifying glass, And outputs the enlarged image to the enlarged display area 800.

As described above, the enlarged display section 360 enlarges and displays a complicated signal graph portion, so that an accurate signal pattern can be easily recognized.

Although not specifically described, the present invention should be construed to include, besides the above-described multi-frequency display device, a software or a program performing such a function and a method of displaying a multiplication frequency using software.

When the first peak frequency and the second peak frequency are designated, the multiplication frequency of the generated electromagnetic wave can be easily confirmed by automatically displaying the multiplication frequency, It is possible to easily identify a harmonic signal or a multiplied frequency signal and other other peak signals (such as noise) among a plurality of peak signals.

Further, by providing a marker information pop-up window for displaying signal information (frequency, level, etc.) of a signal in which the marker is located on the electromagnetic wave level output screen, specific information on a desired measurement signal can be easily recognized.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. , Separation, substitution, and alteration of the invention will be apparent to those skilled in the art. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (8)

A multiplying frequency display device included in an electromagnetic wave measuring system,
A peak selection signal input unit receiving a first peak selection signal for selecting a first peak signal having a maximum level in an electromagnetic wave level output screen and a second peak selection signal for selecting a second peak signal having a next large level;
A peak signal determination unit for determining the first peak signal and the second peak signal using the first peak selection signal and the second peak selection signal;
A frequency interval between a first peak frequency of the first peak signal and a second peak frequency of the second peak signal is calculated as a resonance frequency and a frequency obtained by adding an integral multiple of the resonance frequency to the first peak frequency is determined as a multiplication frequency A multiplying frequency calculator; And
And a multiplication frequency line display unit for generating and outputting a multiplication frequency line representing a multiplication frequency calculated on the electromagnetic wave level output screen,
The peak selection signal input unit receives the first peak selection signal and the second peak signal using first position information and second position information of a marker (pointer) sequentially arranged in the first peak signal and the second peak signal, And the selection signal is sequentially generated. delete The method according to claim 1,
The peak signal determination unit determines a peak signal closest to the first position information in which the marker is located as a first peak signal and determines a peak signal closest to the second position information in which the marker is located as a second peak signal And a frequency multiplier for frequency-doubling the frequency of the electromagnetic wave. The method of claim 3,
Further comprising a marker information providing unit for generating and outputting a marker information pop-up window for providing electromagnetic signal information of a portion where the marker is located on the electromagnetic wave level output screen. 5. The method of claim 4,
Wherein the electromagnetic wave signal information displayed on the marker information pop-up window includes frequency information, level information, and deviation information. 6. The method of claim 5,
Further comprising an enlarged display section for enlarging and displaying an area where the marker is located. A multiplying frequency display method included in an electromagnetic wave measuring system,
A peak selection signal input step of receiving a first peak selection signal for selecting a first peak signal having a maximum level in an electromagnetic wave level output screen and a second peak selection signal for selecting a second peak signal having a next large level;
A peak signal determination step of determining the first peak signal and the second peak signal using the first peak selection signal and the second peak selection signal;
A frequency interval between a first peak frequency of the first peak signal and a second peak frequency of the second peak signal is calculated as a resonance frequency and a frequency obtained by adding an integral multiple of the resonance frequency to the first peak frequency is determined as a multiplication frequency A multiplying frequency calculating step of calculating a multiplying frequency; And
And a multiplication frequency line display step of generating and outputting a multiplication frequency line indicating the calculated multiplication frequency on the electromagnetic wave level output screen,
In the step of inputting the peak selection signal,
The first peak selection signal and the second peak selection signal are sequentially generated using the first position information and the second position information of the marker (pointer) sequentially arranged in the first peak signal and the second peak signal, And the frequency of the multiplied frequency is displayed. An antenna assembly and a turntable provided inside the anechoic chamber, a positioner provided outside the anechoic chamber, an RF selector, individual equipment including a test receiver, and a main controller for controlling the operation of each of the individual equipment as a whole A computer program for displaying a multiplicative frequency, which is installed and used in the main controller of an electromagnetic wave measuring system,
A first peak selection signal for selecting a first peak signal having a maximum level in an electromagnetic wave level output screen and a second peak selection signal for selecting a second peak signal having a next larger level, And a peak selection signal input for sequentially generating the first peak selection signal and the second peak selection signal using first position information and second position information of a marker (pointer) sequentially arranged in the second peak signal, function;
A peak signal determination function for determining the first peak signal and the second peak signal using the first peak selection signal and the second peak selection signal;
A frequency interval between a first peak frequency of the first peak signal and a second peak frequency of the second peak signal is calculated as a resonance frequency and a frequency obtained by adding an integral multiple of the resonance frequency to the first peak frequency is determined as a multiplication frequency Multiplying frequency calculating function; And
A multiplication frequency line display function for generating and outputting a multiplication frequency line representing the calculated multiplication frequency on the electromagnetic wave level output screen;
The computer program for displaying the multiplied frequency stored in the medium.

Images