KR101348133B1 - Real-time multichannel signal measurement appartus - Google Patents

Abstract

The present invention provides a real-time multi-channel signal measuring device and its operation method. The apparatus has at least one module having a unique number and outputting a channel signal converted from a measurement signal to one data signal line; And a base for providing a call signal composed of pulse trains corresponding to the total number of modules to the module, and receiving data signals composed of channel signals to demultiplex to correspond to each unique number. Each module is time-divided to sequentially provide the channel signal to a data signal line.

Description

Real-time multi-channel signal measuring device {REAL-TIME MULTICHANNEL SIGNAL MEASUREMENT APPARTUS}

The present invention relates to a multi-channel signal measuring device, and more particularly, to a signal measuring device capable of arranging a plurality of modules and performing multi-channel signal measurement in real time.

The present invention was derived from a study conducted as part of the Ministry of Knowledge Economy's industrial source technology development project [Task No. -10033514, Project Name: Emotional Multimodal u-Learning Device Development].

Multiplexers are often used to measure two or more channels at the same time. That is, the multiplexer receives a plurality of analog signals and sequentially supplies them to the analog-to-digital converter. In a signal measurement system constructed using a multiplexer, the number of signals the system can accommodate is determined by the number of input signal channels of the multiplexer. In a signal measurement system constructed using a multiplexer, it is not possible to add or remove input signals. Accordingly, there is a need for a method capable of flexibly configuring a system for signal measurement according to the number of input signals.

One technical problem to be solved of the present invention is to provide a time-division multi-channel signal measurement device in real time according to the number of input signals.

A real-time multi-channel signal measuring apparatus according to an embodiment of the present invention has at least one module having a unique number and outputting a channel signal converted from a measurement signal to a data signal line; And a base for providing a call signal composed of a pulse train corresponding to the total number of modules to the module, and receiving data signals composed of the channel signals to demultiplex them to correspond to each unique number. Each of the modules is time-divided to sequentially provide the channel signal to the data signal line.

The real-time multi-channel signal measurement system according to an embodiment of the present invention may add or delete modules according to the number of input signal channels. Thus, this system can provide the system's channel scalability and flexibility. That is, the same modules can be connected to each other to form a multi-channel. Alternatively, different types of modules may be connected to each other to process various types of signals.

1 is a block diagram illustrating a real-time multi-channel signal measuring apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a module of the signal measurement device of FIG. 1.
3 is a flowchart illustrating an operation method of a real-time multi-channel signal measuring apparatus according to an embodiment of the present invention.
4 is a timing diagram of the real-time multi-channel signal measuring device of FIG. 1.
5 is a timing diagram illustrating channel confirmation mode and warning modes according to an embodiment of the present invention.
6 is a timing diagram illustrating a signal output mode according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed contents are thorough and complete and that the spirit of the present invention is sufficiently conveyed to those skilled in the art. In the drawings, the components are exaggerated for clarity. Parts indicated by the same reference numerals throughout the specification represent the same components.

1 is a block diagram illustrating a real-time multi-channel signal measuring apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a module of the signal measurement device of FIG. 1.

3 is a flowchart illustrating an operation method of a real-time multi-channel signal measuring apparatus according to an embodiment of the present invention.

4 is a timing diagram of the real-time multi-channel signal measuring device of FIG. 1.

1 to 4, the signal measuring device 100 has a unique number and outputs at least one channel signal P_CH converted from the measurement signals S1 and S2 to one data signal line 12. One module (111a ~ 111d), and the module (111a ~ 111d) provided with a call signal (AA) consisting of a pulse string corresponding to the total number of the module through the call line 11 and the channel signals (P_CH It includes a base 120 for receiving the data signal (DD) consisting of) to demultiplex to correspond to each unique number.

When each of the modules 111a to 111d has the same channel number and the unique number according to the order of pulses constituting the pulse train, time is divided to sequentially provide the channel signal P_CH to the data signal line 12 do.

The base 120 may provide power and paging signals to the plurality of modules 111a to 111d. The modules 111a to 111d provide the data signal DD to the base 120. Power may be provided to the modules 111a to 111d through the power line 13. The call signal AA may be provided to the modules 111a to 111d through the call line 13. The data signal DD may be provided from the modules 111a to 111d to the base 120 through the data signal line 12.

Each of the modules 111a to 111d includes a unique number book 118. The unique number unit 118 has a set unique number (MN). The unique number unit 118 may provide a unique number (MN) to the channel collision detection unit 112. For example, the unique number may be "3". The unique number can be changed. The unique number of the first module 111a is set to "1", the unique number of the second module 111b is set to "2", and the unique number of the third module 111c is set to "3" , The unique number of the fourth module 111d may be set to “4”. Each of the modules 111a to 111d may have the same structure.

The third module 111c may include a signal conversion unit 114, a switch 113, and a channel collision detection unit 112.

The signal conversion unit 114 receives the signal conversion start signal PS and the measurement signals S1 and S2, converts or modulates a signal, and outputs a channel signal P_CH. The signal converter 114 includes pulse amplitude modulation (PAM), pulse position modulation (PPM), pulse width modulation (PWM), and pulse code modulation (PCM). ), and analog-to-digital conversion. The signal converter 114 may output the channel signal P_CH while the signal conversion start signal PS is provided, and maintain the output in a high impedance state while the signal conversion start signal PS is not provided. have.

The sensors 140a and 140b may output measurement signals S1 and S2. The measurement signals S1 and S2 may include at least one of an electrocardiogram, an electroencephalogram, a safety level, a pulse wave signal, and a breathing signal, and combinations thereof. The sensors 140a and 140b may be bioelectric signal sensors or optical sensors using electrodes.

The analog front end (AFE, 116) may receive the measurement signals (S1, S2) as an input and provide an output signal (AS) by adjusting the size of the analog signal. The analog front end 116 processes the measurement signals S1 and S2 measured through the sensors 140a and 140b. The analog front end 116 may include at least one of a front end amplifier and a differential amplifier.

The filter unit 115 may receive the output signal AS of the analog front end unit 116 and remove a predetermined frequency component. The signal PD passing through the filter unit 115 is provided as an input to the signal conversion unit 114. The output signals AS and PS may be analog signals or digital signals.

The switch 113 is connected to the data signal line 12. The switch 113 connects to output the channel signal P_CH to the data signal line 12 according to the switch control signal DA. Alternatively, the switch 113 provides the data signal line 12 as an input signal DL of the channel collision detection unit 112 according to the switch control signal DA. The data signal DD is provided as an input or output as needed.

The channel collision detection unit 112 receives the paging signal AA and checks the channel number. The channel collision detection unit 112 provides the switch control signal DA to the switch 113 and provides the signal conversion start signal PS to the signal conversion unit 114. The channel collision detection unit 112 may provide a warning signal ALM to the warning unit 117.

The auxiliary power unit 119 may include a battery. When the base 120 does not supply power, the auxiliary power unit 119 may supply power to the module.

The base 120 includes a clock generation unit 122 for generating a clock, an demultiplexing addressing signal (AAA) using the clock, and an addressing for generating the call signal (AA) having a predetermined pulse string using the clock The unit 124, a demultiplexing unit 127 receiving data from the data signal line and demultiplexing according to the demultiplexing addressing signal (AAA), and a signal processing unit processing the demultiplexed channels (D_CH1 to D_CH4) 128).

The base 120 is connected to the call signal line 11 and the data signal line 12. The base 120 receives the data signal DD as an input through the data signal line 12. The base 120 provides the call signal AA to the modules through the call signal line 11.

The demultiplexer 127 restores the original channels from the data signal DD provided by modules connected to the data signal line using the demultiplexer addressing signal AAA.

The signal processing unit 128 receives signals reconstructed as individual channels as inputs. The signal processor 128 processes the restored signals again according to signal attributes. For example, when the signal converter 114 modulates the PPM method, the signal processor 128 may restore the original measurement signal PD by restoring according to the PPM method. The signal processing unit may communicate with an external device through the communication control unit 129 and adjust a signal state.

The communication control unit 129 transmits individual signals to the processing unit at the request of the processing unit. The connection between the processing unit and the base may be USB, Bluetooth or LAN. The communication control unit 129 may process the output signal of the signal processing unit and output it by wire or wirelessly.

The power supply unit 126 drives the base 120 and the module 110.

Channel restoration in the base may vary depending on the type of the call signal and the signal conversion characteristics of the module.

The processing unit 130 may include communication means. The processing unit may display or process the restored measurement signal. The processing unit may display a biosignal on a display element. The processing unit 130 may be a computer.

The data signal DD is equal to the sum of the signals of the channels CH1 to CH4. The module provides the signal of each channel to the data signal line at a sampling interval (Ts). The base restores each channel from the data signal DD to an individual sampling interval Ts. In this case, the sampling interval Ts is equal to the multiplexing time interval T_m.

PPM modulation converts the signal size to a time width (T_D1) using the slope of a sawtooth wave at each sampling time point. PPM demodulation reversely restores the time width (T_D1) to the signal size. The base restores the signal size at each sampling point to a continuous signal through sample and hold to completely restore the channels.

Referring to FIG. 4, the call signal AA includes a pulse sequence repeatedly provided in real time. The period of the pulse train is a multiplexing time interval (T_m). The pulse train may have pulses of an integer multiple of the total number of modules. For example, the number of pulses in the pulse train may be the same as the total number of modules.

The pulse width of a single pulse constituting the pulse train is DT. The pulse train can start with a pulse. The pulse width may be the minimum pulse width of the call signal AA. The pulse width determines the signal rate (1/DT) of the paging signal.

The pulse train remains empty for a predetermined channel time interval (T_CH) after a single pulse. The pulse train includes a total number of signal channels (N=4) or a single pulse of the number of modules, and a channel time interval. In addition, the pulse train includes a blank state for a predetermined mark interval T_MK to distinguish it from the next pulse train.

That is, after the mark interval T_MK, the first pulse represents the starting point of the first channel. The first channel is maintained for a channel time interval (T_CH) after the first pulse.

The second pulse is the starting point of the second channel signal. The starting positions of all configuration channels are known. Using these relations, the following relational expression is obtained.

T_m = N (DT + T_CH) + T_MK

In order to clearly distinguish the position of the first pulse in the call signal AA, the mark interval T_MK may be a value greater than the pulse width DT. Preferably, the mark interval T_MK may be set to a channel time interval T_CH level.

The data signal DD includes data synchronized with the call signal AA. The data signal DD may be divided into a plurality of channels CH1 to CH4 using a time division method. The first channel CH1 is synchronized with the first pulse of the pulse train and uses a channel time interval T_CH. The second channel CH2 is synchronized with the second pulse of the pulse train and uses a channel time interval T_CH. The third channel CH3 is synchronized with the third pulse of the pulse train and uses a channel time interval T_CH. The fourth channel CH4 is synchronized with the fourth pulse of the pulse train and uses a channel time interval T_CH.

The pulse position modulation (PPM) method may convert the signal size into a time length of two pulses during the channel time interval (T_CH). The data of the first channel may be an interval T_D1 between two adjacent pulses constituting the first channel. The data of the second channel may be an interval T_D2 between two adjacent pulses constituting the second channel. Data of the third channel may be an interval (T_D3) between two adjacent pulses constituting the third channel. Data of the fourth channel are two adjacent pulses constituting the fourth channel. It may be an interval (T_D4). The width of the pulses constituting the data signal DD may be the same as the width of the pulses constituting the call signal AA.

Since the data signal DD uses a time division method, each channel provides a channel signal P_CH to the data signal line 12 during a channel time interval T_CH corresponding to each channel.

The module can grasp the time position of each channel using the call signal AA. To this end, the module may include pulse train classification means and pulse counters capable of distinguishing pulse trains. The pulse train classification means may include a one shot multi vibrator.

The pulse width of the data signal DD is set equal to the pulse width of the call signal AA. Accordingly, the data signal lines have the same signal transmission rate (1/DT). The minimum value of the time length (eg, T_D1) between two PPM modulated pulses needs to be set to be greater than DT. Otherwise, the signal transmission rate of the data signal line may be changed.

Referring to FIG. 3, each module may operate in a channel confirmation mode (A), a signal output mode (B), or a channel warning mode (C).

The channel check mode (A) may be executed when power is applied to the module (S100) or when the module's unique number is changed (S143). When power is applied to the module or when the unique number is changed, a single-shot pulse such as a power on reset (POR) is generated and the channel check mode is executed.

In the case of the channel check mode, the module primarily stops signal output for a predetermined waiting time (within a few seconds) set according to the unique number (S114). Optionally, the channel collision detection unit 112 may operate the warning unit 117 (S112). In the channel confirmation mode (A) later, the warning signal may be canceled (S136).

Subsequently, the channel collision detection unit 112 provides the switch control signal DA to the switch 113 to set the data input state (S121). Subsequently, the channel collision detection unit 112 checks the channel number using the unique number set in the module 111c and the call signal AA (S122).

The unique number may be stored in the unique number unit 118. The channel number can be calculated by calculating the call signal (AA). The call signal AA may include a periodic pulse train, and the pulse train may have pulses corresponding to the total number of modules, and a constant mark interval at the end. Therefore, when the channel collision detection unit 112 finds the mark interval T_MK, it resets the channel number and counts again.

The unique number is a fixed value that can be changed, and the channel number changes continuously with time. Subsequently, the channel collision detection unit 112 determines whether the channel number and the unique number match (S123). The channel number is checked repeatedly until the channel number matches the unique number.

Subsequently, if the channel number matches the unique number, it is determined whether the switch 113 is in a data input state (S124).

When the switch 113 is in a data input state, the channel collision detection unit 112 receives the data signal DD as a partial data signal DL (S132).

Subsequently, the channel collision detection unit 112 determines in real time whether the partial data signal DL is occupied by predetermined signals (S134). During the channel time interval T_CH at the start position of the corresponding channel, if there is a change in the logic state in the data signal DD or the partial data signal DL due to the presence of a PPM pulse, it is determined that the corresponding channel is already occupied. During the channel time interval (T_CH) at the starting position of the corresponding channel, if there is no PPM pulse and there is no logical state change, it is determined that the channel is not occupied.

When the partial data signal DL or the data signal DD is occupied for a time interval allocated to the channel, the warning unit 117 is operated because another module already uses a specific unique number (S142).

On the other hand, when the partial data signal DL is not occupied, other modules do not use a specific unique number. Therefore, if the warning unit 117 is operating, the channel collision detection unit 112 stops the operation of the warning unit 117 (S136).

Subsequently, in order to output the channel signal P_CH, the channel collision detection unit 112 provides a switch control signal DA to the switch. Accordingly, the switch 113 is changed to the data output state (S138).

Subsequently, the channel collision detection unit 112 outputs a signal conversion start signal PS. Accordingly, the signal converter 114 converts the measurement signals S1 and S2 or the converted measurement signals PD into a predetermined modulation method to generate a channel signal P_CH (S125).

Subsequently, the switch 113 is in a data output state. Accordingly, the channel signal P_CH is provided to the data signal line 12 through a switch 113 (S126).

Subsequently, the channel collision detection unit 112 may check whether the unique number has been changed (S127). When the unique number is changed, the switch is converted to a data input state (S121). Accordingly, the signal confirmation mode operates again.

On the other hand, when the unique number has not been changed, the signal output mode B is executed. Accordingly, the channel collision detection unit 112 checks the channel number and the unique number (S122).

Different modules at different times provide different channel signals to the data signal line 12 via a switch 113. The channel signals P_CH provided by different modules at different times form a data signal DD. The data signal DD is demultiplexed through the base 120.

Referring to FIG. 3 again, in the case of the signal output mode, the channel collision detection unit 112 checks the channel number using the unique number set in the module and the call signal AA (S122). By the signal confirmation mode, the switch 113 is already in the data output state.

The unique number is stored in memory. The channel number can be calculated by calculating the call signal. The call signal includes a periodic pulse train, the pulse train has a unit pulse corresponding to the total number of periodic modules, and a mark interval having a constant section at the end. Accordingly, when the channel collision detection unit 112 finds the mark interval, it resets the channel number and counts again.

The unique number is a fixed value that can be changed, and the channel number changes continuously with time.

Next, it is determined whether the channel number and the unique number match (S123). The channel collision detection unit 112 checks the channel number until the channel number matches the unique number.

Subsequently, if the channel number matches the unique number, the channel collision detection unit 112 determines whether the switch is in a data input state (S124). The data input state/data output state of the switch is determined by the switch control signal DA. Typically, the signal confirmation mode is executed when the switch 113 is already in the data output state.

When the switch is in the data output state, the channel collision detection unit 112 outputs a signal conversion start signal PS. Accordingly, the signal conversion unit 114 converts the measurement signal or the converted measurement signal to generate a channel signal P_CH. The channel signal P_CH is provided to the data signal line 12 through a switch 113. The channel signal P_CH is a predetermined channel constituting the data signal DD.

The call signal is composed of periodic pulse trains. Accordingly, if the channel number matches the unique number, the module periodically outputs data (S126).

Subsequently, it is checked whether the unique number has been changed (S127), and the signal output mode is repeated.

Meanwhile, different modules provide different channel signals to the data signal line through a switch at different times. The channel signals form a data signal, and the data signal is demultiplexed through a base.

Referring to FIG. 3 again, in the case of the channel warning mode, the channel collision detection unit 112 determines whether the switch is connected to the data signal line of the channel collision detection unit (S124). When the switch is in a data input state, the channel collision detection unit 112 detects a partial data signal DA of the data signal line (S132).

Subsequently, the channel collision detection unit 112 determines in real time whether the partial data signal DL is occupied by predetermined signals (S134).

When a pulse is detected in the partial data signal, a warning signal ALM is generated and provided to the warning unit 117 (S142). The warning unit 117 may warn the user by light, sound, vibration, or a combination thereof.

Optionally, when a warning signal is generated, the channel collision detection unit 112 may provide a switch control signal to the switch to change it to a data input state. Accordingly, the module stops signal output.

The warning signal can occur when a unique number is used in duplicate. When the user changes the unique number of the specific module (S143), the specific module may escape the warning mode.

 It is confirmed that the unique number of the specific module is changed (S144). When the unique number is changed, the specific module may operate in a channel check mode.

When power is applied to the modules, each module performs a channel check process to check whether the corresponding channel already exists in the data signal. The channel check process is performed by the operation of the channel collision detection unit 112. The channel collision detector operates when power is applied to the module or when the unique number is changed. The channel collision detection unit generates a warning signal ALM when a channel collides with a channel of another module. The channel collision detection unit provides a warning signal ALM. Accordingly, the warning unit operates.

Hereinafter, the operation mode of the real-time multi-channel signal measuring device will be described.

5 is a timing diagram illustrating channel confirmation mode and warning modes according to an embodiment of the present invention.

Referring to FIG. 5, the operation of the third module 111c of FIG. 1 will be described. The unique number of the first module is set to "1", the unique number of the second module is set to "2", the unique number of the third module is set to "2", and the unique number of the fourth module is " Assume that it is set to 4".

The channel collision detection unit 112 provides the switch control signal DA to the switch 113 to set the data input state (“H”). That is, the switch connects the data line and the channel collision detection unit 112. Accordingly, the output signal P_CH of the signal conversion unit is in an open state ("Z").

Subsequently, the third module checks the channel number using the unique number set in the module 111c and the call signal AA.

Subsequently, the channel collision detection unit 112 determines whether the channel number and the unique number match. The channel number is checked repeatedly until the channel number matches the unique number.

Subsequently, if the channel number matches the unique number, it is determined whether the switch 113 is in a data input state (“H”). When the switch 113 is in a data input state (“H”), the channel collision detection unit 112 receives the data signal DD as a partial data signal DL. The portion determined to be occupied by the partial data signal DL is in a circle formed by a dotted line. The area outside the circle is a channel signal provided by another module. However, the data line is connected to the channel collision detection unit through a switch and displayed on the partial data signal.

Accordingly, the channel collision detection unit 112 determines whether the partial data signal DL is occupied by predetermined signals in real time. When the partial data signal DL is occupied, the warning unit 117 is operated because another module already uses a specific unique number. That is, a warning signal ALM is generated.

6 is a timing diagram illustrating a signal output mode according to an embodiment of the present invention.

6, the operation of the third module is described. The unique number of the first module is set to "1", the unique number of the second module is set to "2", the unique number of the third module is set to "3", and the unique number of the fourth module is " Assume that it is set to 4".

Before the signal output mode was executed, the channel check mode was activated, and the switch was changed to the data output state ("L"). That is, the switch connects the data line and the signal converter. Accordingly, the partial data signal DL of the channel collision detection unit is in an open state ("Z").

The base outputs a call signal composed of pulse trains. The first module outputs the first channel signal during a time interval assigned to the first channel. The second module outputs the second channel signal during the time interval assigned to the second channel.

The third module checks the channel number using the unique number ("3") set in the third module and the call signal (AA).

Next, it is determined whether the channel number and the unique number match. Until the channel number matches the unique number, the third module checks the channel number.

Subsequently, if the channel number matches the unique number, the third module determines whether the switch is in a data input state (“H”). The data input state ("H")/data output state ("L") of the switch is determined by the switch control signal DA.

When the switch is in the data output state ("L"), the channel collision detection unit outputs the signal conversion start signal PS in the form of a pulse in a high state. The pulse width of the signal conversion start signal PS is a channel time interval (T_CH). In addition, when the signal conversion start signal is in a low state, the output of the signal conversion unit is in an open state. Accordingly, each module can provide output only at an allocated time interval.

The signal converter 114 converts a measurement signal or a converted measurement signal to generate a channel signal P_CH. In the figure, the signal in the dotted line is the channel signal P_CH. However, the signal outside the dotted line may flow channel signals provided by other modules through the data line.

The channel signal P_CH is provided to the data signal line 12 through a switch 113. The channel signal P_CH is a predetermined channel constituting the data signal DD.

The call signal is composed of periodic pulse trains. Therefore, if the channel number matches the unique number, the module periodically outputs data.

It provides a system configuration method that enables multi-channel signal measurement in real time according to the number of input signals. A system capable of adjusting the total number of signal channels that can be measured by changing the number of signal detection units connected to the signal processing unit is provided.

In a real-time multi-channel signal measurement system, modules can be added or deleted according to the number of input signal channels, thereby ensuring channel scalability and flexibility of the system. Multiple channels may be formed by connecting the same modules to each other, or a multi-channel system capable of obtaining various types of signals by connecting different types of modules.

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In the above, the present invention has been illustrated and described with respect to specific preferred embodiments, but the present invention is not limited to these embodiments, and those skilled in the art to which the present invention pertains are claimed in the claims. It includes all of the various types of embodiments that can be carried out without departing from the technical spirit.

100: signal measuring device
12: data signal line
111a~111d: module
11: Call line
120: bass

Claims (35)

A plurality of modules having a unique number and outputting a channel signal converted from a measurement signal to one data signal line; And
It includes a base for providing a paging signal consisting of a pulse train corresponding to the total number of modules to the module, receiving the data signal composed of the channel signals, and demultiplexing to correspond to each unique number,
The modules and the base are connected in a daisy chain manner,
Each of the modules is time-divided to provide the channel signal sequentially to the data signal line Real-time multi-channel signal measuring device, characterized in that. According to claim 1,
And a processing unit for processing the demultiplexed channel signal. According to claim 1,
A real-time multi-channel signal measuring device characterized in that the unique number can be changed. According to claim 1,
Each of the above modules:
A signal conversion unit receiving a signal conversion start signal, receiving the measurement signal, converting a signal form, and outputting a channel signal;
A switch that is connected to the data signal line and connects the channel signal to output to the data signal line according to a switch control signal, or provides the data signal line as an input to the channel collision detection unit according to the switch control signal; And
And a channel collision detection unit providing the switch control signal to the switch and providing the signal conversion start signal to the signal conversion unit. According to claim 4,
The module further includes a warning unit,
In the state in which the switch is connected to the data signal line to the channel collision detection unit, the channel collision detection unit detects a signal of the data signal line, and when a signal is detected, generates a warning signal and provides it to the warning unit Real-time multi-channel signal measuring device. According to claim 4,
A shear processing unit that processes the measurement signal measured through a sensor; And
Further comprising a filter for receiving a predetermined frequency component input to the output signal of the front end processing unit,
Real-time multi-channel signal measuring device, characterized in that the signal passing through the filter unit is provided as an input to the signal conversion unit. According to claim 1,
The base:
A clock generator for generating a clock;
An addressing unit for generating a demultiplexing addressing signal using the clock and the call signal having a predetermined pulse string using the clock;
A demultiplexing unit receiving data from the data signal line and demultiplexing according to the addressing signal;
A power supply unit for driving the base and the modules; and
And a signal processing unit for processing the demultiplexed channel signal. The method of claim 7,
Further comprising a processing unit,
The base is a real-time multi-channel signal measuring device further comprises a communication control unit for processing the output signal of the signal processing unit to output the wired or wireless. At least one module having a unique number and outputting a channel signal converted from a measurement signal to one data signal line; And a base for providing a call signal consisting of a pulse train corresponding to the total number of modules to the module through a call line, receiving data signals composed of the channel signals, and demultiplexing them to correspond to each unique number. , Each of the modules includes a switch, a channel collision detection unit, and a signal conversion unit, each of the modules in the operation method of the real-time multi-channel signal measuring device for sequentially providing the channel signal to the data signal line,
Checking a channel number using the unique number set in the module and the call signal;
Determining whether the channel number and the unique number match;
Determining a connection state of the switch; And
And when the connection state of the switch is a data output state, converting a measurement signal into a signal to generate the channel signal and providing the data signal line to the data signal line. The method of claim 9,
Converting the connection state of the switch into a data input state by providing the data signal line as an input of the channel collision detection unit;
If the connection state of the switch is a data input state, acquiring and checking a signal from the data signal line;
Determining whether a signal is occupied by the data signal line; And
And when the signal is not occupied by the data signal line, converting the connection state of the switch into the data output state connecting the output of the signal converter to the data signal line. Method of operation of signal measuring device. The method of claim 10,
If the signal is occupied by the data signal line, the method of operating a real-time multi-channel signal measuring device further comprising the step of operating a warning means. The method of claim 11,
The method of operating a real-time multi-channel signal measuring device further comprising the step of changing the unique number of the module. The method of claim 9,
The call signal is composed of one multiplexing time interval (T_m) period, and is continuously provided in real time, and the data signal is synchronized with the call signal and continuously provided in real time. . In claim 13,
The call signal is composed of a pulse train of the number (N) of the modules,
The pulse train is configured such that a single pulse having a constant pulse width (T_DT) has a predetermined channel time interval (T_CH),
The pulse train includes a mark interval (T_MK) of a specific length after the last N th pulse,
The total time (T_m) of the pulse train is
T_m = N(T_DT + T_CH) + T_MK,
The mark interval (T_MK) is greater than the pulse width (T_DT), characterized in that the operation method of a real-time multi-channel signal measuring device. In claim 14,
The channel signal is synchronized with the single pulse of the pulse train and is present in the i-th channel time interval (T_CH) corresponding to the unique number (i) of the module. In claim 9,
The channel signal is pulse amplitude modulation (PAM), pulse position modulation (PPM), pulse width modulation (PWM), pulse code modulation (PCM), and analog -A method of operating a real-time multi-channel signal measuring device, characterized in that it is one of digitally converted digital codes. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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