KR102561828B1 - Apparatus and method for detecting line failure using crosstalk signal - Google Patents

Abstract

A line failure detection apparatus using a crosstalk signal is disclosed. A circuit fault detection device using a crosstalk signal according to the present invention is formed on a substrate and has first and second differential signal lines through which a differential signal flows, and the first and second differential signal lines on the substrate are formed at equal intervals, , first and second signal guiding lines having the same length and same width, detecting a first crosstalk signal induced to the first signal guiding line from the first differential signal line, and detecting the second signal guiding line from the second differential signal line A crosstalk detection unit detecting a second crosstalk signal induced by a crosstalk signal, a differential signal amplifier configured to differentially amplify the first crosstalk signal and the second crosstalk signal and output a differential amplified signal, and A control unit extracting characteristic information including size information and frequency information and detecting a failure of a line including the first and second differential signal lines using the extracted characteristic information and normal characteristic information pre-stored in a memory do.

Description

Line failure detection apparatus and method using crosstalk signal {APPARATUS AND METHOD FOR DETECTING LINE FAILURE USING CROSSTALK SIGNAL}

The present invention detects a crosstalk signal induced from a pair of signal lines through which a differential signal flows, and detects a line failure using a crosstalk signal, which can detect a line failure using magnitude information and frequency information of the crosstalk signal. It relates to an apparatus and method.

As a method of detecting a line failure, a method of measuring the current flowing through the line is exemplified. For example, as shown in FIG. 1, after inserting the sensor resistors Ra and Rb into the signal line, the voltages of both ends of the sensor resistors Ra and Rb are measured, and the voltages of both ends of the sensor resistors Ra and Rb are measured. There is a way to measure the current by dividing it by the resistance value. Although this method enables accurate measurement, there is a problem in that resistance affects the impedance of the line, resulting in signal loss, and there is a limitation that a resistor having a very small resistance value must be used to minimize the effect on impedance. As another example, there is a method of measuring the current using the Hall Effect of the line, but this method has a limitation that the measurement accuracy is lowered.

As a method of detecting a line failure, a method of measuring the voltage applied to the line is exemplified. For example, as shown in FIG. 1 , there is a method of inserting load resistors Rc and Rd in parallel into signal lines and measuring voltages of both ends of the load resistors Rc and Rd. In this method, accurate measurement is possible, but there is a problem that resistance affects the impedance of the line and signal loss occurs. In order to minimize the effect of resistance on the impedance of the line, a very large resistance value and rated capacity (Watt) There is a limit to the use of . Therefore, there is a need for a method capable of detecting whether a line is faulty without affecting the line impedance and without causing signal loss.

In addition, the conventional method measures the size of voltage or current, and detects line failure using the size. However, a signal having an AC waveform with a constant frequency may flow in the line, and there is a limit in that it is difficult to determine whether a signal that should originally flow is properly flowing only with the magnitude of the voltage or the magnitude of the current. Therefore, in an environment where signals having frequencies such as Ethernet signals, audio signals, video signals, data signals, and network signals pass through lines, a method for accurately determining whether signals are effectively flowing is required.

In addition, patch panels have been used in conventional integrated wiring boards, but conventional patch panels simply reconnect lines such as networks, and management of corresponding lines has to be performed manually by an operator. In addition, in an integrated wiring board environment in which a number of communication devices, user devices, LAN cables, etc. are complicatedly connected, it is very difficult for an operator to manage line numbers of many lines and monitor failures. For example, the operator could not detect the failure in real time even when a failure occurred in the line due to a wiring error between cables, etc., and even when the failure was recognized, the operator could not automatically recognize the line number where the failure occurred. It was very difficult to understand and manage the connection of lines.

The present invention is to solve the above problems, and an object of the present invention is to detect a crosstalk signal induced from a signal line pair through which a differential signal flows, and to prevent line failure by using magnitude information and frequency information of the crosstalk signal. It is to provide a line failure detection device and method using a crosstalk signal that can be detected.

A circuit fault detection device using a crosstalk signal according to the present invention is formed on a substrate and has first and second differential signal lines through which a differential signal flows, and the first and second differential signal lines on the substrate are formed at equal intervals, , first and second signal guiding lines having the same length and same width, detecting a first crosstalk signal induced to the first signal guiding line from the first differential signal line, and detecting the second signal guiding line from the second differential signal line A crosstalk detection unit detecting a second crosstalk signal induced by a crosstalk signal, a differential signal amplifier configured to differentially amplify the first crosstalk signal and the second crosstalk signal and output a differential amplified signal, and A control unit extracting characteristic information including size information and frequency information and detecting a failure of a line including the first and second differential signal lines using the extracted characteristic information and normal characteristic information pre-stored in a memory do.

In this case, the first signal guiding line is disposed closest to the first differential signal line among a plurality of signal lines formed on the substrate, maintains a constant first distance from the first differential signal line, and The first crosstalk signal is induced by a coupling capacitance effect with a differential signal line, the second signal induced line is disposed closest to the second differential signal line among a plurality of signal lines formed on the substrate, and the A second interval between the two differential signal lines is kept constant, the second crosstalk signal is induced by a coupling capacitance effect with the second differential signal line, and the first interval and the second interval may be the same. .

Meanwhile, the first signal guiding line and the second signal guiding line are formed in a partial section among sections in which the differential signal line is disposed in the substrate, and the starting point of the first signal guiding line may correspond to the starting point of the second signal guiding line. .

Meanwhile, the crosstalk detection unit includes a first resistor disposed between the first signal guiding line and a ground, and a second resistor disposed between the second signal guiding line and a ground, and a voltage across the first resistor is measured as the second resistor. 1 crosstalk signal, and the voltage across the second resistor can be detected as a second crosstalk signal of the second crosstalk signal.

In this case, the first crosstalk signal and the second crosstalk signal may have the same amplitude and frequency and a phase difference of 180 degrees.

Meanwhile, the pre-stored normal characteristic information includes amplitude information and frequency information of a differential amplification signal generated when the differential signal normally flows through the first and second differential signal lines, and the controller controls the amplitude of the differential amplification signal. If the information does not match the magnitude information of the pre-stored normal characteristic information or the frequency information of the differential amplification signal does not match the frequency information of the pre-stored normal characteristic information, it may be determined that a failure has occurred.

On the other hand, the control unit counts the number of times the differential amplified signal passes through a specific voltage, and a feature extraction unit that detects a section in which the differential amplified signal has a level higher than a threshold voltage, and and a line monitoring unit that detects a failure based on the number of times and a period in which the differential amplification signal has a level higher than the threshold voltage.

In this case, the threshold voltage may be determined based on magnitude information of a differential amplified signal generated when the differential signal normally flows through the first and second differential signal lines.

Meanwhile, the line monitoring unit may determine that a failure has occurred when a section having a level higher than the threshold voltage is not detected from the differential amplified signal.

In this case, the line monitoring unit calculates frequency information of the amplified differential signal using the number of times the amplified differential signal passes through a specific voltage, and determines that a failure has occurred when the frequency of the amplified differential signal is not detected.

In this case, the line monitoring unit may determine that a failure has occurred if the frequency information of the differential amplified signal is detected and the frequency information in the pre-stored normal characteristic information does not match the detected frequency information.

Meanwhile, if the frequency information in the pre-stored normal characteristic information does not match the detected frequency information, the control unit converts the amplified differential signal into digital data, and Fourier transforms the digital data to obtain characteristic information of the amplified differential signal. can be extracted.

Meanwhile, the line monitoring unit may compare the calculated frequency information with normal characteristic information of a plurality of types of signals to determine types of signals flowing through the first and second differential signal lines.

Meanwhile, a line failure detection method using a crosstalk signal according to the present invention detects a first crosstalk signal induced from a first differential signal line to a first signal induced line, and detects a first crosstalk signal induced from a second differential signal line to a second signal induced line. 2 Detecting a crosstalk signal, differentially amplifying the first crosstalk signal and the second crosstalk signal and outputting an amplified differential signal, obtaining characteristic information including magnitude information and frequency information of the differential amplified signal extracting, and detecting a failure of a line including the first and second differential signal lines using the extracted characteristic information and normal characteristic information pre-stored in a memory; The second signal guiding lines may be formed at equal intervals between the first and second differential signal lines through which differential signals flow, and may have the same length and the same width.

According to the present invention, there is an advantage in detecting whether or not there is a failure in a line without affecting the impedance of the line and without causing loss to a signal flowing through the line. In addition, unlike the conventional method of simply measuring the magnitude of voltage or current, by detecting the frequency of the signal flowing through the line and determining whether there is a failure, it is possible to accurately determine whether the signal that should originally flow through the line is flowing properly. There are advantages.

According to the present invention, by simply configuring the feature extraction unit as an analog circuit and providing an algorithm capable of determining whether or not there is a failure only with information on the number of zero crossings and whether the differential amplified signal has a level higher than the threshold voltage, It is possible to determine whether there is a failure at low cost/low power.

1 is a diagram for explaining a conventional problem.
2 is a block diagram for explaining a line failure detection apparatus using a crosstalk signal according to the present invention.
3 is a diagram for explaining a crosstalk signal according to the present invention.
4 is a diagram illustrating a signal line pair including two differential signal lines and a organic line pair including two signal induced lines according to the present invention.
5 is a diagram for explaining a detailed configuration of a crosstalk detector and a differential signal amplifier.
6 is a diagram illustrating a first crosstalk signal, a second crosstalk signal, and a differential amplification signal according to the present invention.
7 is a diagram for explaining a feature extraction method according to the present invention.
8 is a diagram for explaining a method of detecting a failure based on the number of times a differential amplification signal passes a specific voltage and a section in which the amplified differential signal has a level higher than a threshold voltage according to the present invention.
9 is a diagram illustrating an integrated wiring board to which a line failure detection method using a crosstalk signal is applied.
10 is a diagram showing a failure management system of an integrated wiring board according to the present invention.
11 is a diagram for explaining a patch panel and line interface according to the present invention.
12 is a diagram showing a circuit for detecting and transmitting a line interface, a signal loss line, and a crosstalk signal according to the present invention.
13 is a block diagram for explaining the components of the line monitoring device according to the present invention.
14 is a flowchart for explaining the operation of the circuit monitoring device according to the present invention.
15 is a flowchart for explaining the operation of the failure management system of the integrated wiring board according to the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present invention , it should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

In implementing the present invention, components may be subdivided for convenience of description, but these components may be implemented in one device or module, or one component may be divided into multiple devices or modules may be implemented in

2 is a block diagram for explaining a line failure detection apparatus using a crosstalk signal according to the present invention.

An apparatus 10 for detecting line failure using a crosstalk signal according to the present invention (hereinafter referred to as 'device 10') includes a crosstalk generator 100, a differential signal amplifier 200, a control unit 300, It may include an input unit 400, a communication unit 500, a status output unit 600, and a memory 700. Not all of the components of device 10 described in FIG. 2 are essential, and device 10 may include fewer or more components.

The crosstalk generator 100 may generate a crosstalk signal. Specifically, the crosstalk generating unit 100 is disposed close to the signal line pair through which the differential signal flows, and the crosstalk signal is induced by the coupling capacitance between the lines 110 and the organic line pair 110 are generated. A crosstalk detection unit 120 for detecting a crosstalk signal may be included. In addition, the crosstalk detection unit 120 may further include a passive filter for removing noise from the crosstalk signal, for example, an RLC filter.

The differential signal amplifier 200 may differentially amplify two crosstalk signals derived from a signal line pair composed of two differential signal lines to generate one differential amplification signal. To this end, the differential signal amplifier 200 may include a differential amplifier that outputs an output signal proportional to the difference between two input signals.

The controller 300 may control overall operations of the device 10 .

In addition, the control unit 300 may extract characteristic information including magnitude information and frequency information of the differential amplification signal using the differential amplification signal. In addition, the control unit 300 may compare characteristic information of the differential amplified signal with normal characteristic information pre-stored in the memory 700 to detect a failure of a line including two differential signal lines. The control unit 300 may include a feature extraction unit 310, a Fourier transform unit 320, and a convolution monitoring unit 330.

The feature extractor 310 may extract characteristic information including amplitude information and frequency information of the differential amplification signal from the differential amplification signal.

Here, the magnitude information of the differential amplification signal may include an effective value, an average value, a maximum value, a minimum value, a median value (an offset value of the differential amplification signal as an intermediate value between the maximum value and the minimum value) of the differential amplification signal. In addition, the magnitude information of the differential amplification signal may include peak information including whether a peak occurs within a certain time period and the number of peaks occurring within a certain time period.

Also, the frequency information of the differential amplification signal may include the frequency of the differential amplification signal and zero-crossing rate (ZCR) information. Here, ZCR (Zero-crossing rate) information refers to the number of times a differential amplified signal (specifically, the voltage of a differential amplified signal) passes a specific voltage during a certain period of time. can be used to calculate

In addition, the feature extractor 310 may include a digital to analog converter and convert a differential amplification signal, which is an analog signal, into digital data. This digital data can be used for detailed analysis of the differential amplified signal, such as used in a Fourier transform or provided to an operator.

The Fourier transform unit 320 may generate a Fourier spectrum by transforming the differential amplified signal based on a Fourier transform algorithm such as discrete Fourier transform (DFT) or fast Fourier transform (FFT). In this case, the line monitoring unit 330 may extract magnitude information and frequency information of the differential amplification signal from the Fourier spectrum.

The line monitoring unit 330 is composed of an MCU or a CPU, and may detect line failure using characteristic information including magnitude information and frequency information of the differential amplified signal. In this case, the line monitoring unit 330 compares the characteristic information of the differential amplified signal with the normal characteristic information pre-stored in the memory 700 to detect a failure of the line including the two differential signal lines.

The memory 700 may store programs or instructions for operating the device 10 . Also, the memory 700 may store normal characteristic information. Here, the normal characteristic information may be at least one of magnitude information and frequency information of a differential amplified signal generated when a differential signal normally flows through two differential signal lines.

The input unit 410 directly receives user input, including buttons or touch pads, or communicates with external devices through various communication methods such as RS-232, RS-422, RS-485, CAN, Ethernet, and other digital communications. A user input may be received from an external device.

The communication unit 500 provides an interface for communication with an external device and transmits/receives data with the external device by various communication methods such as RS-232, RS-422, RS-485, CAN, Ethernet, and other digital communication. can

In addition, the communication unit 500 may transmit at least one of characteristic information of the differential amplification signal and line state information to an external device under the control of the control unit 300 . Here, the state information of the line may include one of a normal state and a failure state.

The status output unit 600 may output line status information to the outside. For example, the status output unit 600 includes a display module to display the state of the device 10, includes a light-emitting element such as an LED to emit light when a failure occurs, or includes a speaker to emit a failure notification sound when a failure occurs. can be printed out.

Meanwhile, the device 10 may further include a substrate and a signal line pair including two differential signal lines formed on the substrate and through which a differential signal flows.

3 is a diagram for explaining a crosstalk signal according to the present invention.

Crosstalk refers to propagation of a signal or noise due to coupling between lines, in which an electrical signal of one line electromagnetically couples to another line to affect the other line.

Referring to FIG. 3A , when one line 310 and another line 320 are arranged at regular intervals and satisfy a predetermined condition, capacitance coupling by stray capacitance (parasitic capacitor) occurs between the lines, Noise is induced in another line 320 by a signal flowing through one line 310 . In the present invention, noise induced in another line 320 by a coupling capacitance (C in FIG. 3A) between lines is called a crosstalk signal. That is, when a signal flows through one line 310, a cross-toss signal may be induced in another line 320 due to a coupling capacitance effect.

Hereinafter, it will be described that a crosstalk signal is induced by a coupling capacitance effect, but is not limited thereto, and a crosstalk signal may be induced even when inductive coupling occurs due to mutual inductance between lines.

FIG. 3B is a diagram showing a voltage (Vs) of a signal flowing through the line 310 of FIG. 3A, a coupling capacitance (C) between lines, and a resistance (Rs) connected to another line 320 in an equivalent circuit. Here, the resistance Rs may be a load sensor resistance for measuring the voltage of the crosstalk signal. The voltage (Vc) applied to the resistor (Rs) by the coupling capacitance (coupling capacitance), that is, the voltage of the crosstalk signal can be expressed by the following equation. w is the frequency of the signal flowing on line 310.

Meanwhile, in order to calculate the coupling capacitance (C), the following equation may be used.

(d: distance between lines, L: length of line, W: width of line, e ₀ : permittivity of air, e _r : permittivity of dielectric)

When a line is patterned on a PCB substrate or the like, the permittivity (e _r ) of the dielectric may be the material constituting the substrate (or the material constituting the coating of the substrate), and the signal induced line for inducing the crosstalk signal is converted to the existing signal. By arranging them close to the line, it is possible to artificially generate a crosstalk signal on the signal guiding line. In this case, the distance (d) between the existing signal line and the signal guiding line, the length (L) of the signal guiding line, and the width (W) of the signal guiding line may be appropriately adjusted so that a crosstalk signal may be generated.

4 is a diagram illustrating a signal line pair including two differential signal lines and a organic line pair including two signal induced lines according to the present invention.

The pair of signal lines 411 and 422 are part of a line connecting the devices, and a signal transmitted from one device to another device may pass through the pair of signal lines 411 and 422 . For example, signal line pairs 411 and 422 are formed on a board, and the board is a patch for connecting a device (more specifically, a cable connected to the device) and another device (more specifically, a cable connected to the other device) in the integrated wiring board. Can be placed on a panel. In this case, a signal generated by one device in the integrated wiring board can be transferred to another device in the integrated wiring board through the pair of signal lines 411 and 422 .

Meanwhile, a substrate on which the signal line pairs 411 and 422 are formed may be a PCB substrate. In this case, the signal line pairs 411 and 422 may be patterned on the PCB substrate.

Meanwhile, a differential signal may flow through the pair of signal lines 411 and 422 . Specifically, the pair of signal lines 411 and 422 include a first differential signal line 411 and a second differential signal line 412, and the first signal is connected to the first differential signal line 411, and the second differential signal line 412 A first signal may flow. Here, the first signal and the second signal may have the same amplitude and frequency, and may have a phase difference of 180 degrees. When the pair of signal lines 411 and 422 conform to the RJ45 standard, the first differential signal line 411 and the second differential signal line 412 may be TX+ and TX- lines, or RX+ and RX- lines.

Referring to FIG. 4 , the first differential signal line 411 and the second differential signal line 412 are straight and may be formed parallel to each other on the substrate. However, it is not limited thereto, and the first differential signal line 411 and the second differential signal line 412 do not necessarily have to be straight and may not be parallel to each other.

Meanwhile, the organic line pair 110 may include a first signal organic line 111 and a second signal organic line 112 .

The first signal guiding line 111 may be disposed closest to the first differential signal line 411 among the plurality of signal lines formed on the substrate. In addition, the first signal guiding line 111 may maintain a constant first distance from the first differential signal line 411 . For example, when the first differential signal line 411 is a straight line, the first signal guiding line 111 may also be formed as a straight line while maintaining a constant first distance from the first differential signal line 411 . For another example, when the first differential signal line 411 is curved, the first signal guiding line 111 may also be formed in a curved shape while maintaining a constant first distance from the first differential signal line 411 . When the first signal flows through the first differential signal line 411, the first signal guiding line 111 has a coupling capacitance effect between the first differential signal line 411 and the first signal guiding line 111. 1 crosstalk signal can be induced.

The second signal guiding line 112 may be disposed closest to the second differential signal line 412 among a plurality of signal lines formed on the substrate. Also, the second signal guiding line 112 may maintain a constant second distance from the second differential signal line 412 . For example, when the second differential signal line 412 is a straight line, the second signal guiding line 112 may also be formed as a straight line while maintaining a constant second distance from the second differential signal line 412 . For another example, when the second differential signal line 412 is curved, the second signal guiding line 112 may also be formed in a curved shape while maintaining a constant second distance from the second differential signal line 412 . When the second signal flows through the second differential signal line 412, the second signal guiding line 112 is suppressed by a coupling capacitance effect between the second differential signal line 412 and the second signal guiding line 112. 2 Crosstalk signals can be induced.

Regardless of the shape (straight line, curve, wavy shape, etc.) of the first differential signal line 411 and the second differential signal line 412, the first interval between the first signal guiding line 111 and the first differential signal line 411 is constant, the second interval between the second signal excitation line 112 and the second differential signal line 412 is constant, and the first interval and the second interval may be equal to each other.

Also, the first signal guiding line 111 may be closest to the first differential signal line 411 among a plurality of signal lines formed on the substrate in all sections where the first signal guiding line 111 is disposed. Similarly, the second signal guiding line 112 may be closest to the second differential signal line 412 among a plurality of signal lines formed on the substrate in all sections where the second signal guiding line 112 is disposed. For example, even when a plurality of signal lines formed on a substrate are not formed parallel to each other and the intervals between the signal lines are not constant, all sections of the first signal excitation line 111 are closest to the first differential signal line 411. And, all sections of the second signal organic line 112 may be closest to the second differential signal line 412.

Meanwhile, when the first differential signal line 411 and the second differential signal line 412 are formed in parallel on the substrate, the first signal guiding line 111 and the second signal guiding line 112 may also be formed in parallel. Specifically, the first signal guiding line 111 may be formed parallel to the first differential signal line 411 , and the second signal guiding line 112 may be formed parallel to the second differential signal line 412 . In addition, since the first differential signal line 411 and the second differential signal line 412 are formed parallel to each other, the first signal lead line 111 and the second signal lead line 112 may also be formed parallel to each other.

On the substrate, the first signal guiding line 111 and the second signal guiding line 112 may be formed at equal intervals on the two differential signal lines 411 and 412 . Specifically, the distance D1 between the first signal guiding line 111 and the first differential signal line 411 may be the same as the distance D2 between the second signal guiding line 112 and the second differential signal line 412. there is.

Also, the first signal guiding line 111 and the second signal guiding line 112 may have the same width. Specifically, the width W1 of the first signal guiding line 111 and the width W2 of the 2 signal guiding line 112 may be equal to each other.

The first signal guiding line 111 and the second signal guiding line 112 may have the same length. Specifically, the length L1 of the first signal guiding line 111 and the length L2 of the second signal guiding line 112 may be equal to each other.

Also, the first signal guiding line 111 and the second signal guiding line 112 may be formed in some of the sections in the substrate where the differential signal lines are disposed. Specifically, on the X-axis (the direction in which the signal guiding line and the differential signal line extend), the length L1 of the first signal guiding line 111 may be shorter than the length of the first differential signal line 411, and the second signal guiding line 112 The length L2 of ) may be shorter than the length of the second differential signal line 412 .

Also, the start point of the first signal lead line 111 may correspond to the start point of the second signal lead line 112 . Specifically, the starting point (X coordinate) of the first signal guiding line 111 on the X axis (the direction in which the signal guiding line and the differential signal line extend) may be the same as the starting point (X coordinate) of the second signal guiding line 112 .

Also, the first signal guiding line 111 and the second signal guiding line 112 may be disposed in the same direction from the corresponding differential signal line. For example, when the first signal guiding line 111 is disposed above the first differential signal line 411 on the substrate (positive Y axis direction when viewing the substrate in the X-Y plane), the second signal guiding line 112 is also 2 may be disposed on top of the differential signal line 412 .

The first signal guiding line 111 and the second signal guiding line 112 have the same spacing (distance), width, and length as the differential signal line. Therefore, referring to Equation 2 again, the coupling capacitance between the first signal guiding line 111 and the first differential signal line 411 will be equal to the coupling capacitance between the second signal guiding line 112 and the second differential signal line 412. can

Also, the first signal flowing through the first differential signal line 411 and the second signal flowing through the second differential signal line 412 may have the same amplitude and frequency, and may have a phase difference of 180 degrees. Accordingly, the first crosstalk signal induced by the first signal guiding line 111 and the second crosstalk signal induced by the second signal guiding line 112 may also have the same amplitude and frequency, and may have a phase difference of 180 degrees.

In addition, since the first signal guiding line 111 and the second signal guiding line 112 have the same length and have the same starting position, in the presence of external noise, the first signal guiding line 111 and the second signal guiding line 112 Almost the same noise signal is induced, and this noise signal is removed by the operation of the differential signal amplifier 200 to be described later.

In addition, since the first signal guiding line 111 and the second signal guiding line 112 are formed in some of the sections in which the differential signal lines are disposed, the first differential signal line 411 and the second differential signal line 412 are formed due to the coupling capacitance effect. ) can be minimized.

Meanwhile, the organic line pairs 111 and 112 may also be patterned on the PCB substrate, and the spacing from the differential signal line and the width and length of the organic line pairs 111 and 112 may be designed to be suitable for inducing crosstalk signals. . 4 shows that the organic line pairs 111 and 112 are formed on the same horizontal plane as the signal line pairs 411 and 412 (on the X-Y plane when viewing the substrate in the X-Y plane), but is not limited thereto, and the organic line Pairs 111 and 112 and signal line pairs 411 and 412 may be formed in a vertical plane (in the X-Z plane when viewing the substrate in the X-Y plane) or in various other arrangements.

The crosstalk detector 120 detects the first crosstalk signal induced from the first differential signal line 411 to the first signal guiding line 111, and detects the first crosstalk signal induced from the second differential signal line 412 to the second signal guiding line 112. An induced second crosstalk signal may be detected.

Specifically, the crosstalk detection unit 120 may detect the crosstalk signal by detecting the voltage (voltage component of the crosstalk signal) induced in the induced line pair 111, 112.

More specifically, the crosstalk detector 120 may include a first resistor R _S+ connected to the first signal guiding line 111 and disposed between the first signal guiding line 111 and the ground. The crosstalk current induced by the first signal induced line 111 generates a voltage across the first resistor R _S+ , and the crosstalk detector 120 controls the voltage V _c+ across the first resistor R _S+ . 1 Can be detected as a crosstalk signal.

Also, the crosstalk detector 120 may include a second resistor R _S− connected to the second signal guiding line 112 and disposed between the second signal guiding line 112 and the ground. The crosstalk current induced by the second signal induced line 112 generates a voltage across the second resistor R _S- , and the crosstalk detector 120 generates a voltage across the second resistor R _S- (V _{c- )} . ) can be detected as the second crosstalk signal. That is, the first resistor (R _S+ ) and the second resistor (R _S- ) may serve as the load sensor resistor (Rs) described in FIG. 3B. Also, the resistance value of the first resistor R _S+ and the resistance value of the second resistor R _S- may be equal to each other. Accordingly, the first crosstalk signal and the second crosstalk signal detected by the crosstalk detection unit 120 also have characteristics of differential signals, have the same amplitude and frequency, and have a phase difference of 180 degrees.

5 is a diagram for explaining a detailed configuration of a crosstalk detector and a differential signal amplifier.

The crosstalk detector 120 includes a first detector 121 for detecting and amplifying the first crosstalk signal 510 and a second detector 122 for detecting and amplifying the second crosstalk signal 520. can do.

One end of the first resistor R _1S+ is connected to the first organic line 111, the other end of the first resistor R _1S+ is connected to ground, and one end of the first resistor R _1S+ is connected to the first detector 121 Can be connected to the input terminal of the first amplifier of. That is, as the first resistor R _1S+ is connected in parallel with the input terminal of the first amplifier, the voltage across the first resistor R _1S+ (the first crosstalk voltage V _CR+ of the first crosstalk signal) 1 may be provided as an input voltage to the amplifier, and the first amplifier may output the first amplified crosstalk voltage (V _{C1+ ) by amplifying the first crosstalk voltage (V CR +} ). Meanwhile, a Rail-to-Rail OP AMP may be used for the first amplifier.

One end of the second resistor R _1S- is connected to the second organic line 112 and the other end of the second resistor R _1S- is connected to ground, and one end of the second resistor R _1S- is connected to the second detector ( 122) may be connected to the input terminal of the second amplifier. That is, as the second resistor R _1S- is connected in parallel with the input terminal of the second amplifier, the voltage across both ends of the second resistor R _1S- (the second crosstalk voltage V _CR- of the second crosstalk signal) ) may be provided as an input voltage to the second amplifier, and the second amplifier may output a second amplified crosstalk voltage (V _C1- ) by amplifying the second crosstalk voltage (V _CR- ). Meanwhile, a Rail-to-Rail OP AMP may be used for the second amplifier. Meanwhile, the gain of the first amplifier may be the same as that of the second amplifier.

Next, the first amplification crosstalk voltage V _C1+ output from the first detector 121 is applied to the first input terminal of the differential signal amplifier 200 and the second amplification cross output from the second detector 122 The torque voltage (V _C1- ) may be input to the second input terminal of the differential signal amplifier 200.

Meanwhile, a filter 180 (for example, an RLC filter) may be installed between the crosstalk detector 120 and the differential signal amplifier 200 to remove noise from the first crosstalk signal and the second crosstalk signal. , the first amplified crosstalk voltage (V _C1+ ) and the second amplified crosstalk voltage (V _C1− ) may be input to the differential signal amplifier 200 after passing through the filter 180 .

Meanwhile, the differential signal amplifier 200 may include a differential amplifier, differentially amplify the first crosstalk signal (V _C3+ ) and the second crosstalk signal (V _C3- ) to output a differential amplified signal. there is. The first crosstalk signal (V _C3+ ) and the second crosstalk signal (V _C3- ) input to the differential signal amplifier 200 are detected by the first resistor (R _1S+ ) and the second resistor (R _1S- ). Among the crosstalk voltages (V _CR+, V _CR- ), the amplified crosstalk voltages (V _C1+, V _C1- ) output from the first amplifier and the second amplifier, or the amplified crosstalk voltage after passing through the filter 180. can be either

6 is a diagram illustrating a first crosstalk signal, a second crosstalk signal, and a differential amplification signal according to the present invention. A description will be made with reference to FIG. 5 .

The differential amplifier of the differential signal amplifying unit 200 differentially amplifies the first crosstalk signal (V _C3+ ) 510 and the second crosstalk signal (V _C3- ) 520 to generate the differential amplified signal 610 ) can be output. Accordingly, the differential amplification signal Vd = the first crosstalk signal V _C3+ - the second crosstalk signal V _C3- . Since the first crosstalk signal (V _C3+ ) 510 and the second crosstalk signal (V _C3- ) 520 have the same frequency and opposite phases, the first crosstalk signal (V C3+ ) and the second crosstalk signal (V _C3+ ) 520 Noise components due to external factors existing in the torque signal V _C3- may be removed. Also, the frequency of the differential amplification signal (Vd) 610 may be the same as the frequency 510 of the first crosstalk signal (V _C3+ ) and the frequency of the second crosstalk signal (V _C3− ) 520 .

The control unit 300 extracts characteristic information including magnitude information and frequency information of the differential amplification signal (Vd) 610, and uses the extracted characteristic information and normal characteristic information pre-stored in a memory to first and second differential A failure of a line including the signal lines 411 and 412 can be detected. Here, magnitude information and frequency information of the differential amplification signal (Vd) 610 may be obtained by the Fourier transform unit 320 or other modules capable of extracting magnitude information and frequency information.

Here, the failure refers to a situation in which signals that should originally flow through the first and second differential signal lines 411 and 412 do not normally flow, and may include line failures and device failures.

Here, the line failure may refer to a situation in which a signal that should originally flow does not normally flow due to damage (including disconnection) occurring in a line connecting the two devices (a line including the first and second differential signal lines 411 and 412). there is. For example, line failure occurs when the first and second differential signal lines 411 and 412 are damaged, or cables connected to the first and second differential signal lines 411 and 412 of the line failure detection device 10 are damaged. , a case where the connection between the line failure detection device 10 and the cable is poor or the cable is not connected.

In addition, device failure may refer to a situation in which a signal that should originally flow does not normally flow because a problem occurs in one or more of two devices connected by a line. For example, a device failure may refer to a situation in which a device does not transmit a signal or transmits an abnormal signal due to a failure of a device connected to a cable or a power supply being turned off.

Meanwhile, normal characteristic information may be stored in the memory 700 . Here, the normal characteristic information includes characteristic information (at least one of magnitude information and frequency information) of a differential amplified signal generated in a normal state (when the differential signal normally flows through the first and second differential signal lines 411 and 412). can do.

Frequency information included in the pre-stored normal characteristic information may be the same as frequency information of differential signals flowing through the first and second differential signal lines 411 and 412 in a normal state.

In addition, the magnitude information included in the pre-stored characteristic information is, as the differential signal flows through the first and second differential signal lines 411 and 412 in a normal state, the crosstalk detector 120 and the differential signal amplifier 200. It may include magnitude information of a differential amplification signal generated by the operation. Size information included in the pre-stored normal characteristic information can be theoretically calculated based on the characteristics of elements constituting the device 10 (value of coupling capacitance, resistance (R _S+, R _S- ), amplifier gain, etc.) However, it is not limited thereto, and may be determined by a measurement value actually measured when a differential signal flows through the first and second differential signal lines 411 and 412 in a normal state.

Meanwhile, the pre-stored normal characteristic information may be determined according to a communication standard supported by a line including the first and second differential signal lines 411 and 412 .

On the other hand, the control unit 300 controls the magnitude information (RMS value, average value, maximum value, minimum value, median value, etc.) of normal characteristic information (RMS value, average value, maximum value, minimum value, median value, etc.) ) or if the frequency information of the differential amplification signal does not match the frequency information of the pre-stored normal characteristic information, it may be determined that a failure has occurred. That is, the control unit 300 is in a normal state without a failure when the magnitude information of the differential amplification signal matches the magnitude information of the previously stored normal characteristic information and the frequency information of the differential amplification signal matches the frequency information of the previously stored normal characteristic information. can be judged to be

On the other hand, "matching" may include not only the magnitude information or frequency information of the differential amplification signal being identical to the previously stored magnitude information or frequency information of the normal characteristic information, but also that within a threshold range (error range). For example, when the frequency information of the pre-stored characteristic information is 100 MHz, the threshold range is 98 MHz to 102 MHz, and the frequency information of the differential amplified signal is 99 MHz, the controller 130 determines that the frequency information of the differential amplified signal is the frequency of the pre-stored normal characteristic information. information can be determined.

Next, a method for detecting a failure at low cost by configuring the feature extractor 310 as a simple analog circuit will be described.

7 is a diagram for explaining a feature extraction method according to the present invention.

Referring to FIG. 7A , the feature extractor 310 may include a ZCR extractor for extracting zero-crossing rate (ZCR) information. Here, zero-crossing rate (ZCR) information may mean the number of times a voltage component of the differential amplification signal 610 passes a specific voltage (V _Z ) during a certain period of time. For example, the specific voltage (V _Z ) may be equal to an intermediate value (an offset value of the differential amplification signal) of the differential amplification signal generated in a normal state.

In this case, the feature extractor 310 generates a ZCR pulse signal 710 indicating a point in time when the voltage component of the differential amplification signal 610 passes a specific voltage (V _Z ), and counts the number of pulses for a certain period of time. can In this case, the controller 120 may calculate the frequency of the differential amplification signal 610 using the number and time of pulses counted for a certain period of time.

Referring to FIG. 7B , the feature extractor 310 may include a peak detector for detecting a section having a level higher than the threshold voltage V _th from the differential amplification signal 610 . Specifically, the peak detector has a high value when the voltage of the differential amplification signal 610 has a level higher than the threshold voltage (V _th ), and the voltage of the differential amplification signal 610 is at a level lower than the threshold voltage (V _th ) At this time, a peak signal 720 having a low value may be generated. In this case, the feature extractor 310 may count the number of pulses for a certain period of time.

Here, the threshold voltage (V _th ) may be determined based on magnitude information of a differential amplified signal generated in a normal state (when a differential signal normally flows through the first and second differential signal lines 411 and 412).

Specifically, referring again to FIG. 6B , the threshold voltage (V _th ) may be a value between the maximum value (V _max ) and minimum value (V _min ) of the differential amplification signal in a normal state. In addition, the maximum value (V _max ) and minimum value (V _min ) of the differential amplification signal in the steady state are values that reflect the offset value (V _OFF ) of the differential amplification signal, and therefore the threshold voltage (V _th ) is the offset of the differential amplification signal It may be a value between the value (V _OFF ) and the maximum value (V _max ), or a value between the offset value (V _OFF ) and the minimum value (V _min ) of the differential amplification signal. For example, the threshold voltage (V _th ) may be an effective value of the differential amplification signal in a normal state.

Meanwhile, the maximum value (V _max ), minimum value (V _min ), and offset value (V _OFF ) of the differential amplified signal may vary depending on the type of signal flowing through the first and second differential signal lines 411 and 412 or the standard of the line. there is. Accordingly, the threshold voltage (V _th ) may also vary depending on the type of signal or standard of line. For example, if a network signal flows through the differential signal line of the device 10 installed on the first line, but an audio signal flows through the differential signal line of another device installed on the second line, the threshold voltage in the device 10 and that in the other device Threshold voltages may be different from each other.

Next, the line monitoring unit 330 of the control unit 300 may detect failure based on the number of times the amplified differential signal passes through a specific voltage and the section in which the amplified differential signal has a level higher than the threshold voltage. This will be described with reference to FIG. 8 .

8 is a diagram for explaining a method of detecting a failure based on the number of times a differential amplification signal passes a specific voltage and a section in which the amplified differential signal has a level higher than a threshold voltage according to the present invention.

If a section having a level higher than the threshold voltage is not detected from the differential amplification signal, the line monitoring unit 330 may determine that a failure has occurred. Specifically, the line monitoring unit 330 may detect a high value from the peak signal 720 for a certain period of time (S810). And, if the high value is not detected (or if the high value is detected below the threshold value), the line monitoring unit 330 may determine that a line failure has occurred (S820). For example, when a line including the first and second differential signal lines 411 and 412 is disconnected, the voltage of the differential amplified signal appears as 0V and a high value is not detected from the peak signal 720 . In this case, the line monitoring unit 330 may determine that a failure due to disconnection has occurred.

Meanwhile, when the high value is detected once or more than a threshold value greater than 1, the line monitoring unit 330 may calculate the frequency of the differential amplification signal using the ZCR pulse signal 710 (S830). Specifically, the line monitoring unit 330 counts the number of pulses of the ZCR pulse signal 710 for a certain period of time, and calculates the frequency of the differential amplification signal using the number and time of the counted pulses for a certain period of time. .

Next, the line monitoring unit 330 may determine whether a signal flowing through the differential signal lines 411 and 412 exists (S840). For example, it is assumed that a current flows through the differential signal lines 411 and 412, but a signal having a frequency does not flow. In this case, since a high value can be detected from the peak signal 720, it is not possible to determine whether a failure has occurred in S810.

However, the line monitoring unit 330 may determine whether there is a failure based on whether the frequency of the differential amplified signal is detected. That is, when the frequency of the differential amplification signal is not detected (when the frequency is 0 or less than the threshold value), the line monitoring unit 330 may determine that a line failure has occurred (S820).

On the other hand, when the frequency of the differential amplification signal is detected, the line monitoring unit 330 may proceed to S850.

When the frequency of the amplified differential signal is detected, the line monitoring unit 330 may compare characteristic information of the amplified differential signal with normal characteristic information pre-stored in the memory 700 (S850). Specifically, the line monitoring unit 330 may compare the frequency of the differential amplification signal with the frequency of pre-stored normal characteristic information to determine whether they match each other.

Meanwhile, when the frequency information of the differential amplified signal does not match the frequency information in the normal characteristic information (S850), the line monitoring unit 330 may determine that a failure has occurred. However, it is not limited thereto, and when the frequency information of the differential amplified signal does not match the frequency information in the normal characteristic information, the line monitoring unit 330 may perform a detailed analysis on the differential amplified signal.

Specifically, referring back to FIG. 7C , the feature extraction unit 310 includes a digital-to-analog-converter and converts the differential amplified signal (Vd) 610, which is an analog signal, into digital data 730. can do. In addition, the Fourier transform unit 320 may generate a Fourier spectrum by transforming the digital data 730 based on a Fourier transform algorithm such as discrete Fourier transform (DFT) or fast Fourier transform (FFT). In this case, the line monitoring unit 330 analyzes the Fourier spectrum to extract characteristic information including magnitude information and frequency information of the differential amplified signal (S870), and compares the extracted characteristic information with pre-stored normal characteristic information to determine the quality of the line. A state (failure occurrence state or non-occurrence state) may be determined (S870). That is, resources can be saved by performing detailed analysis only when the frequency information of the differential amplified signal does not match the frequency information in the normal characteristic information after proceeding to S810 to S850.

Meanwhile, two frequencies may exist in one signal according to the type of signals flowing through the first and second differential signal lines 411 and 422 . In this case, the line monitoring unit 330 compares the magnitude information and frequency information of the first frequency component extracted from the differential amplified signal with the magnitude information and frequency information of the first frequency component of the normal characteristic information, and extracts it from the differential amplification signal. The size information and frequency information of the second frequency component obtained may be compared with the size information and frequency information of the second frequency component of the normal characteristic information to determine the state of the line (failure occurrence state or non-occurrence state) (S870).

Meanwhile, when the frequency of the differential amplified signal is detected, the line monitoring unit 330 may compare characteristic information of the differential amplified signal with normal characteristic information pre-stored in the memory 700 (S850). In addition, when the frequency information of the differential amplified signal matches the frequency information in the normal characteristic information, the line monitor 330 may determine that the normal state is not caused by a failure.

That is, through S810 to S840, while configuring the feature extraction unit 310 as a simple and low-cost circuit, it is possible to easily determine whether or not there is a failure using characteristic information extracted from a simple and low-cost circuit.

Additionally, the line monitoring unit 330 may determine the type of signal flowing through the first and second differential signal lines 411 and 422 . Specifically, it is assumed that the device 10 does not know what signals are flowing through the first and second differential signal lines 411 and 422, and the memory 700 stores normal characteristic information of a plurality of types of signals. am. For example, the memory 700 may store normal characteristic information of a network signal, normal characteristic information of an audio signal, and normal characteristic information of a video signal.

In this case, the line monitoring unit 300 compares frequency information detected from the differential amplified signal with normal characteristic information of a plurality of types of signals to determine the type of the signal flowing through the first and second differential signal lines 411 and 422. can do. For example, when the frequency information detected from the differential amplified signal matches the frequency information in the normal characteristic information of the audio signal, the line monitor 300 determines whether the audio signal flows through the first and second differential signal lines 411 and 422. can be determined as

As described above, according to the present invention, there is an advantage in that it is possible to detect whether a line is faulty without affecting the impedance of the line and without causing loss to a signal flowing through the line. In addition, unlike the conventional method of simply measuring the magnitude of voltage or current, by detecting the frequency of the signal flowing through the line and determining whether there is a failure, it is possible to accurately determine whether the signal that should originally flow through the line is flowing properly. There are advantages.

In addition, according to the present invention, the feature extraction unit 310 is simply configured as an analog circuit, and the failure can be determined only by information on the number of zero crossings and whether the differential amplified signal has a level higher than the threshold voltage. By providing an algorithm, it is possible to determine whether there is a failure at low cost/low power.

Meanwhile, the foregoing description may be implemented as a line failure detection method using a crosstalk signal. A line fault detection method using a crosstalk signal according to the present invention detects a first crosstalk signal induced from a first differential signal line to a first signal induced line, and detects a second crosstalk signal induced from a second differential signal line to a second signal induced line. Detecting a crosstalk signal, differentially amplifying the first crosstalk signal and the second crosstalk signal and outputting a differentially amplified signal, extracting characteristic information including amplitude information and frequency information of the differentially amplified signal and detecting a failure of a line including the first and second differential signal lines using the extracted characteristic information and normal characteristic information pre-stored in a memory, The second signal guiding lines may be patterned at equal intervals between the first and second differential signal lines through which the differential signals flow, and may have the same length and the same width.

9 is a diagram illustrating an integrated wiring board to which a line failure detection method using a crosstalk signal is applied.

The integrated wiring board is implemented in the form of various network systems required by users or companies, such as voice, data communication, and building management, by unifying various communication devices required inside and between buildings in the form of a network. Accordingly, in the integrated wiring board, a plurality of communication devices may be connected to each other in the form of a mesh. In addition, the integrated wiring board may connect a plurality of communication devices installed on each floor inside a building or outside a building or in another building in a network form.

The integrated distribution board may include a main distribution frame (MDF) 900 and an intermediate distribution frame (IDF) 1000 .

The main distribution shelf 900 may be disposed inside or outside the building. The main distribution box 900 is a unit in which external and internal circuits are connected, and exists for public or private circuits entering the building to be connected to the internal network, and can serve as an aggregator.

The intermediate wiring board 1000 connects/branches between communication devices and user devices, and may be mainly installed on each floor. The intermediate wiring board 1100 may be connected to communication devices and user devices within the main wiring board 900 .

Each of the main distribution box 900 and the intermediate distribution box 1000 may include a rack and various communication devices mounted on the rack, and numerous cable management and network systems may be constructed through the various communication devices. Exemplarily, routers, switches, servers, and other network devices may be stored in the main distribution box 900 and the intermediate distribution box 1000 . Since specific technical contents thereof are obvious to those skilled in the art, detailed description thereof will be omitted.

Meanwhile, the integrated wiring board may further include user devices installed in the user area 1100 (home, office, etc.). User devices within the user area 1100 include devices directly used by users, such as PCs, analog phones, VoIP phones, wireless A/Ps, fax machines, TVs, fax machines, and copiers. A user device in the user area 1100 may be connected to a communication device in the intermediate wiring board 1100 .

The integrated wiring board supports Ethernet communication, and a LAN cable such as a UTP cable may be used for wiring and a communication link connecting the communication device and the user device, but is not limited thereto. That is, the integrated wiring board can provide an environment in which various signals such as an Ethernet signal, an audio signal, a video signal, a data signal, and a network signal flow, and the cable used may vary depending on the type of the flowing signal. Accordingly, the line interface of the patch panel, which will be described later, can perform a transmission function for various signals such as an Ethernet signal, an audio signal, a video signal, a data signal, and a network signal.

Meanwhile, the patch panel described in FIG. 10 may be installed in an integrated wiring board to provide an interface connecting an upper device and a lower device. Here, the upper device may be a communication device, and the lower device may be a communication device or a user device. Also, the patch panel can be mounted on a communication device or other device in an integrated wiring board.

10 is a diagram showing a failure management system of an integrated wiring board according to the present invention.

The description in FIGS. 1 to 8 can also be applied to a failure management system of an integrated wiring board within a non-contradictory range.

The fault management system 1 of the integrated wiring board includes an operation management server 1000, one or more line monitoring devices 1110, 1120, and 1130, and one or more patch panels 1210, 1220, 1230, 1240, 1250, and 1260. can do.

The operation management server 1000 may communicate with one or more line monitoring devices 1110, 1120, and 1130 and transmit/receive data with the line monitoring device. In addition, the operation management server 1000 may receive identification information of a faulty line from the line monitoring device, communicate with an operator (operator's terminal), and transmit the identification information of a faulty line to the operator (operator's terminal).

In addition, the operation management server 1000 may control overall operations of the fault management system 1 of the integrated wiring board, and generate and transmit policies for operation of the fault management system 1 of the integrated wiring board. For example, the operation management server 1000 may manage a collection period of characteristic information and transmit a characteristic information collection command to one or more line monitoring devices 1110, 1120, and 1130.

One or more line supervisors 1110, 1120, and 1130 may each communicate with one or more patch panels. For example, one or more line monitoring devices 1110, 1120, and 1130 may communicate with a patch panel through 4-wire communication, but are not limited thereto, and may include S-232, RS-422, RS-485, CAN, Ethernet, and other digital devices. It is possible to communicate with the patch panel through various communication methods such as communication.

A patch panel may provide an interface connecting an upper device and a lower device. For example, the patch panel is installed on the main distribution box 900 or the intermediate distribution box 1000, and the upper device may provide an interface connecting a communication device and a lower device such as a communication device or user device.

One patch panel 1210 is connected to one line monitoring device 1110, and one line monitoring device 1110 can communicate with one patch panel 1210. However, it is not limited thereto, and one line monitoring device can communicate with a plurality of patch panels. For example, one line monitoring device 1120 may have a plurality of ports and communicate with a plurality of patch panels 1220 and 1230 respectively connected to the plurality of ports. For another example, a plurality of patch panels 1240, 1250, and 1260 connected in a chain manner to one port of one line monitoring device 1130 are connected, and one line monitoring device 1130 is connected to a plurality of patch panels. Can communicate with (1240, 1250, 1260).

11 is a diagram for explaining a patch panel and line interface according to the present invention.

Referring to FIG. 11A , the patch panel may provide a plurality of line interfaces 1-1 to 1-n for connecting devices in an integrated wiring board. Here, the device in the integrated wiring board may include at least one of the above-described communication device and user device.

FIG. 11B is a diagram showing one line interface 1310 among a plurality of line interfaces 1-1 to 1-n disposed on the patch panel. The description of the line interface 1310 can also be applied to other line interfaces formed in the patch panel.

The line interface 1310 includes signal line pairs 1320 and 1330 formed on a PCB board and including two differential signal lines through which differential signals flow, an inlet connector 1312 to which the signal line pairs 1320 and 1330 are connected, and a signal line. It may include an outlet connector 1311 to which the pairs 1320 and 1330 are connected.

One end of the outlet connector 1311 may be connected to the pair of signal lines 1320 and 1330, and the other end of the outlet connector 1311 may be connected to a lower device connected to the patch panel.

The outlet connector 1311 may include 8 pins to support RJ45 communication. A connection port for accommodating an RJ45 connector is formed in the outlet connector 1311, and an RJ45 connector at an end of a UPT cable extending from a lower device (user device or communication device) can be connected. However, it is not limited thereto, and the outlet connector 1311 may be directly connected to a UPT cable extended from a user device or a communication device. Also, various cables or connectors supporting various communication methods between communication devices in an integrated wiring board or between communication devices and user devices, as well as UPT cables and RJ45 connectors, may be connected to the outlet connector 1311 .

One end of the inlet connector 1312 may be connected to the pair of signal lines 1320 and 1330, and the other end of the inlet connector 1312 may be connected to a higher level device connected to the patch panel.

The inlet connector 1312 may include 8 pins to support RJ45 communication. The LAN cable pulled out from the communication device may be removed and connected to the inlet connector 1312, but is not limited thereto. In addition to LAN cables or UPT cables, various cables or connectors supporting various communication methods between communication devices in an integrated wiring board or between a communication device and a user device may be connected to the inlet connector 1312 .

Meanwhile, eight signal lines may be included between the outlet connector 1311 and the inlet connector 1312 to connect the plurality of pins of the outlet connector 1311 and the plurality of pins of the inlet connector 1312, respectively. The eight signal lines perform a function of transmitting signals or power by simply connecting a connector (or cable) connected to the outlet connector 1311 and a connector (or cable) connected to the inlet connector 1312.

Depending on communication devices or communication methods between communication devices and user devices, only some of the eight signal lines may be used for signal transmission, or all of the eight signal lines may be used for signal transmission. For example, if the line is used for 10 Mbps or 100 Mbps Ethernet communication, 4 out of 8 signal lines can be used, and if the line is used for 1 gigabit Ethernet communication, all 8 signal lines can be used. there is.

Meanwhile, the two signal guiding lines may be disposed close to two differential signal lines through which differential signals flow among a plurality of (eight) signal lines connecting the outlet connector 1311 and the inlet connector 1312 . Here, the two differential signal lines may be a TX line pair or an RX line pair in the RJ45 method.

12 is a diagram showing a circuit for detecting and transmitting a line interface, a signal loss line, and a crosstalk signal according to the present invention.

As described in FIGS. 1 to 8 , the organic line pair may include two signal organic lines formed at equal intervals on two differential signal lines on the PCB board and having the same length and width. In addition, two crosstalk signals may be induced from two differential signal lines in an induced line pair composed of two signal induced lines.

An organic line pair including two signal organic lines may be disposed adjacent to two differential signal lines through which differential signals flow among a plurality of (eight) signal lines connecting the outlet connector 1311 and the inlet connector 1312. .

For example, the organic line pair 1420 including two signal organic lines 1421 and 1422 is two of a plurality of (eight) signal lines connecting the outlet connector 1311 and the inlet connector 1312 through which the differential signal flows. It may be disposed close to the two differential signal lines 1321 and 1322. Among the signal line pair 1320 through which the differential signal flows, the first differential signal line 1321 is a signal line for TX+ connecting pin 1 of the outlet connector 1311 and pin 1 of the inlet connector 1312, and the differential signal is Among the pair of flowing signal lines 1320, the second differential signal line 1322 may be a TX-use signal line connecting the second pin of the outlet connector 1311 and the second pin of the inlet connector 1312. Accordingly, the first differential signal line 1321 and the second differential signal line 1322 of the signal line pair 1320 may constitute a TX signal line pair through which a TX+ signal and a TX- signal flow.

As another example, in the organic line pair 1430 including two signal organic lines 1431 and 1432, a differential signal among a plurality of (eight) signal lines connecting the outlet connector 1311 and the inlet connector 1312 flows. It may be disposed close to the two differential signal lines 1331 and 1332. Among the signal line pairs 1330 through which differential signals flow, the first differential signal line 1331 is a signal line for RX+ connecting pin 3 of the outlet connector 1311 and pin 3 of the inlet connector 1312, and the differential signal is Among the pair of flowing signal lines 1330, the second differential signal line 1332 may be an RX-use signal line connecting pin 6 of the outlet connector 1311 and pin 6 of the inlet connector 1312. Accordingly, the first differential signal line 1331 and the second differential signal line 1332 of the signal line pair 1330 may form an RX signal line pair through which an RX+ signal and an RX- signal flow.

One line interface may include one organic line pair. For example, one induced line pair is disposed close to the TX signal line pair 1320 to generate a crosstalk signal induced from a differential signal flowing through the TX signal line pair 1320, or the RX signal line pair 1330 ), it is possible to generate a crosstalk signal derived from a differential signal flowing through the RX signal line pair 1330.

However, it is not limited thereto, and one line interface may include a first signal line pair 1320 and a second signal line pair 1330 connecting the inlet connector 1312 and the outlet connector 1311 . In addition, in one line interface, two crosstalk signals are induced from the first signal line pair 1320 and the second signal line pair 1330, in which two crosstalk signals are induced. A second organic line pair 1430 may be included.

In this way, when the two organic line pairs 1420 and 1430 are installed in one line interface, detailed information of the failure can be grasped. If one organic line pair is installed in one line interface, it is possible to detect whether or not the line is faulty, whereas if two organic line pairs (1420, 1430) are installed in one line interface, the TX signal within the line It is possible to determine whether there is a problem with the transmission route (or the device transmitting the TX signal) or the transmission route of the RX signal within the line (or the device transmitting the RX signal).

Meanwhile, the line failure detection device described in FIGS. 2 to 8 may be installed in the patch panel. Accordingly, the patch panel may include at least one of a crosstalk generating unit, a differential signal amplifying unit, a control unit, an input unit, a communication unit, a status output unit, and a memory described with reference to FIGS. 2 to 8 . The differential amplification unit differentially amplifies the two crosstalk signals and outputs a differential amplification signal, and the control unit extracts characteristic information including amplitude information and frequency information of the differential amplification signal and transmits the extracted characteristic information to the line monitoring device through the communication unit.

Meanwhile, the line failure detection device installed in the patch panel can perform all functions described in FIGS. 2 to 8 . Accordingly, the patch panel extracts characteristic information including magnitude information and frequency information of the differential amplified signal, and detects a failure of a line including two differential signal lines using the extracted characteristic information and normal characteristic information pre-stored in memory. can do.

On the other hand, the line failure detection device installed in the patch panel may not include some components or perform some functions of the line failure detection device described in FIGS. 2 to 8 . For example, a line fault detection device installed in a patch panel detects two crosstalk signals induced by two signal induced lines, differentially amplifies the two crosstalk signals to generate a differential amplified signal, and generates a differential amplified signal. Characteristic information including information and frequency information may be extracted. However, it may be implemented in such a way that the line failure detection device transmits the characteristic information to the line monitoring device instead of detecting the line failure using the characteristic information, and the line monitoring device detects the line failure using the characteristic information.

Also, the first organic line pair 1420 may be a component of a first line failure detection device, and the second organic line pair 1420 may be a component of a second line failure detection device. However, the first line failure detection device and the second line failure detection device need not independently include all components, and some components may be shared with each other. For example, the first line failure detection device and the second line failure detection device are independently provided with a crosstalk generation unit and a differential signal amplification unit, but share the remaining components (control unit, input unit, memory, communication unit, and status output unit). can

Also, when a plurality of line interfaces are installed in one patch panel, a line failure detection device may be installed in each of the plurality of line interfaces. However, a plurality of line failure detection devices installed in a plurality of line interfaces do not have to independently include all components, and some components may be shared with each other. For example, a crosstalk generation unit including an organic line pair and a crosstalk detection unit is installed independently on each line interface, but a differential signal amplification unit, a control unit, an input unit, a memory, a communication unit, and a status output unit are various line failure detection devices. It can be implemented in a shared way. In this case, detection of characteristic information for each line may be performed with a time difference. For example, characteristic information may be first extracted from the first line interface of the patch panel, and then characteristic information may be extracted from the second line interface of the patch panel.

Also, when a patch panel is mounted on a communication device or other device in an integrated wiring cabinet, the communication device or other device on which the patch panel is mounted may share some components with a line fault detection device installed on the patch panel.

13 is a block diagram for explaining the components of the line monitoring device according to the present invention.

The line monitoring apparatus 1500 according to the present invention may include a first communication unit 1510, a control unit 1520, a memory 1530, an output unit 1540, and a second communication unit 1550. Not all of the components of the line monitoring device 1500 described in FIG. 13 are essential, so the line monitoring device 1500 may include fewer or more components.

The first communication unit 1510 may communicate with a plurality of patch panels through various communication methods such as 4-wire communication, RS-232, RS-422, RS-485, CAN, Ethernet, I2C, and SPI. In detail, the first communication unit 1510 includes one or more ports (Port-1 to Port-m) connected to the patch panel, and can transmit and receive data with the patch panel.

The control unit 1520 may control overall operations of the line monitoring device 1500 . Also, the control unit 1520 may use the characteristic information received from the line monitoring apparatus 1500 to detect a failure of the line on which the characteristic information is detected.

The memory 1530 may store programs or instructions for operating the circuit monitoring device 1500 . Also, the memory 1530 may store normal characteristic information for each line. Here, the normal characteristic information for each line may be at least one of magnitude information and frequency information of a differential amplified signal generated when a differential signal normally flows through two differential signal lines in a corresponding line.

The second communication unit 1550 provides an interface for communication with the operation management server 1000, and the operation management server by various communication methods such as RS-232, RS-422, RS-485, CAN, Ethernet, and other digital communication. (1000) and data can be transmitted/received.

The output unit 1540 may output state information for each line to the outside. For example, the output unit 1540 may include a display module to display the status of each line, include a light emitting device such as an LED to emit light when a failure occurs, or include a speaker to output a failure notification sound when a failure occurs. .

Meanwhile, the control unit of the patch panel may transmit line state information including characteristic information of the differential amplified signal to the line monitoring device 1500 . Here, the characteristic information of the differential amplification signal may include at least one of magnitude information and frequency information of the differential amplification signal. The magnitude information of the differential amplification signal may include an effective value, an average value, a maximum value, a minimum value, a median value (an offset value of the differential amplification signal as an intermediate value between the maximum value and the minimum value) of the differential amplification signal.

In another embodiment, the magnitude information of the differential amplification signal may include whether a peak occurs within a certain time (eg, whether a high value occurs in the peak signal 720 of FIG. 7) or the number of occurrences of a peak within a certain time (eg, For example, peak information including the number of occurrences of a high value in the peak signal 720 of FIG. 7 may be included. In addition, the frequency information of the differential amplification signal is ZCR information or ZCR that is a result of counting the number of times the voltage component of the differential amplification signal passes a specific voltage for a certain period of time (for example, the number of pulses of the ZCR pulse signal 710 of FIG. 7) It may include a frequency calculated using the information. When peak information and ZCR information are used as characteristic information of a differential amplified signal, cost reduction may be advantageous by simplifying components to be installed in a patch panel.

Meanwhile, the control unit of the patch panel may transmit, to the line monitoring device, identification information of the line interface from which the characteristic information is extracted, and line state information including characteristic information. For example, when 10 line interfaces are installed in a patch panel and characteristic information is detected from a first line interface among the 10 line interfaces, the control unit of the patch panel extracts the identification information of the first line interface and the first line interface. The characteristic information may be transmitted to the line monitoring device 1500.

Meanwhile, a plurality of patch panels may be connected to one line monitoring device. Accordingly, the control unit of the patch panel may transmit line state information including interface identification information, characteristic information, and identification information of the patch panel in which the control unit is installed to the line monitoring device 1500 so that the patch panel transmitting the characteristic information is identified.

Meanwhile, the line monitoring device 1500 may be installed together with a plurality of patch panels in a rack in which a plurality of patch panels are installed. That is, since a plurality of patch panels and line monitoring devices are installed in the same rack, unnecessarily long and complicated cables connecting the line monitoring devices and patch panels can be prevented.

Meanwhile, as another method to prevent the cable from being lengthy and complicated, a plurality of patch panels may be connected in a chain manner. For example, the first patch panel is connected to the first port (Port-1) of the circuit monitoring device, the first patch panel is connected to the second patch panel, the second patch panel is connected to the third patch panel, and the third patch panel is connected to the first patch panel. The fourth patch panel may be connected to and communicate with the fifth patch panel.

In this case, the control unit installed in the patch panel receives line state information from the previous patch panel connected to the patch panel where it is installed, and transmits the line status information received from the previous patch panel and the line state information of the patch panel where it is installed to the next patch panel. Alternatively, it may be transmitted to the line monitoring device. The third patch panel may receive line state information from the previous patch panel, which is the fourth patch panel, and the line state information received from the fourth patch panel is the line state information of the fourth patch panel and the line state of the fifth patch panel. At least one of the information may be included. Also, the third patch panel may transmit the line state information received from the fourth patch panel and its own line state information (of the third patch panel) to the second patch panel.

As another example, the first patch panel may receive line state information from a previous patch panel, that is, a second patch panel, and the line state information received from the second patch panel is the line state information of the second patch panel and the fifth patch panel. may include at least one of line state information of In addition, the first patch panel may transmit the line status information received from the second patch panel and its own line status information (of the first patch panel) to the line monitoring device 1500 .

Meanwhile, the line status information transmitted from the patch panel to the line monitoring device may further include information on whether or not a cable (or cable connector) is inserted into the line interface. In addition, the line status information transmitted by the patch panel to the line monitoring device may further include information on whether or not a failure has occurred determined by the control unit of the patch panel.

14 is a flowchart for explaining the operation of the circuit monitoring device according to the present invention.

The control unit 1520 of the line monitoring device 1500 may receive line state information including characteristic information of the differential amplification signal from the patch panel through the first communication unit 1510 (S1405).

Then, the control unit 1520 of the line monitoring device 1500 may post-process the characteristic information in the line state information (S1410). For example, when the characteristic information includes ZCR information, the control unit 1520 of the line monitoring apparatus 1500 may calculate frequency information using the ZCR information and time information at which the ZCR information is collected.

As another example, the control unit 1520 of the line monitoring device 1500 receives a plurality of characteristic information of the same line interface of the same patch panel, and calculates a weighted average value by performing a weighted average of a plurality of size information in the plurality of characteristic information. can In this case, the control unit 1520 of the line monitoring device 1500 may calculate the weighted average value by assigning a high weight to recent size information and a low weight to previous size information among a plurality of pieces of size information. .

As another example, the control unit 1520 of the line monitoring device 1500 receives a plurality of characteristic information of the same line interface of the same patch panel, weights a plurality of frequency information within the plurality of characteristic information, and calculates a weighted average value can do. In this case, the control unit 1520 of the line monitoring apparatus 1500 may calculate a weighted average value by assigning a high weight to recent frequency information and a low weight to previous frequency information among a plurality of frequency information.

Next, the control unit 1520 of the line monitoring device 1500 may detect a failure of the corresponding line using the characteristic information received from the patch panel. Specifically, the control unit 1520 of the line monitoring device 1500 may compare characteristic information in the line state information with normal characteristic information of the corresponding patch panel and line interface (S1415).

In detail, normal characteristic information for each line may be stored in the memory 1530 of the line monitoring device 1500 . For example, the memory 1530 includes normal characteristic information of the first line interface of the first patch panel, normal characteristic information of the second line interface of the first patch panel, and normal characteristic information of the first line interface of the second patch panel. etc. can be stored.

In this case, the control unit 1520 of the line monitoring device 1500 may extract identification information of the patch panel and normal characteristic information corresponding to the line interface from the normal characteristic information for each line stored in the memory. For example, when line state information including identification information of the first patch panel and identification information of the first line interface is received, the control unit 1520 of the line monitoring device 1500 controls the first patch panel from the memory 1530. Normal characteristic information of the first line interface of can be extracted.

In this case, the control unit 1520 of the line monitoring device 1500 may detect a failure of the corresponding line using characteristic information in the received line state information and extracted normal characteristic information.

Specifically, the control unit 1520 of the line monitoring device 1500 may determine whether size information in characteristic information is within a threshold range (S1420). In addition, if the size information in the characteristic information is outside the threshold range, the control unit 1520 of the line monitoring apparatus 1500 may determine that the corresponding line state is abnormal (S1435). Here, the threshold range may mean a section including size information included in normal characteristic information and including an error range. For example, if the magnitude information of the normal characteristic information is 5V, the threshold range is 4.8V to 5.2V, and the magnitude information in the characteristic information is 4V, the control unit 1520 of the line monitoring device 1500 determines that the corresponding line state is abnormal. can judge

Next, the control unit 1520 of the line monitoring device 1500 may determine whether the frequency information in the characteristic information is within a threshold range (S1425). In addition, if the frequency information in the characteristic information is outside the threshold range, the control unit 1520 of the line monitoring apparatus 1500 may determine that the corresponding line state is abnormal (S1435). Here, the critical range may mean a section including frequency information included in the normal characteristic information and including an error range. For example, if the frequency information of the normal characteristic information is 100 MHz, the threshold range is 98 MHz to 102 MHz, and the size information in the characteristic information is 60 MHz, the control unit 1520 of the line monitoring device 1500 may determine that the corresponding line state is abnormal. can

On the other hand, when the size information within the characteristic information is within the critical range (S1420) and the frequency information within the characteristic information is within the critical range (S1425), the control unit 1520 of the line monitoring device 1500 may determine that the corresponding line state is normal. there is.

Meanwhile, the control unit 1520 of the line monitoring device 1500 uses the peak information and ZCR information in the characteristic information to use the method described in FIG. A failure may be detected by a method of detecting a failure based on a section having . When the controller 1520 of the line monitoring device 1500 detects a fault using the peak information and ZCR information in the characteristic information, the configuration of the line fault detection device installed in the patch panel is greatly simplified, and in a plurality of patch panels Since the failure of the line monitoring device 1500 is determined by the control unit 1520, it is possible to simplify the configuration and reduce costs.

Next, the control unit 1520 of the line monitoring device 1500 may transmit line failure state information to the operation management server 1000 through the second communication unit 1550 (S1440).

15 is a flowchart for explaining the operation of the failure management system of the integrated wiring board according to the present invention.

The patch panel 1300 may acquire line state information and transmit it to the line monitoring device (S1510). The patch panel 1300 may periodically acquire and transmit line state information, but is not limited thereto.

For example, the operation management server 1000 may receive a collection command from an operator (operator terminal) and transmit the collection command to the patch panel 1300 . In this case, the patch panel 1300 may obtain and transmit line state information according to a collection command of the operation management server 1000 . When the operation management server 1000 transmits a collection command, the collection command may be transmitted to the patch panel 1300 through the line monitoring device 1500 .

Next, the line monitoring apparatus 1500 may receive line state information and determine a failure state of the line using the line state information (S1520). Also, here, the line failure status information may include information on whether a failure has occurred and identification information of a line where a failure has occurred (identification information of a patch panel and identification information of a line interface). In addition, the line failure state information may further include line state information (characteristic information, information on whether a cable (or cable connector) is inserted into a line interface, etc.) of a line where a failure occurs. In addition, the line failure state information may further include information about a port to which a patch panel having a failure is connected.

In addition, one operation management server 1000 may be connected to a plurality of line monitoring devices. Accordingly, the line monitoring device 1500 may transmit line failure state information including its own identification information to the operation management server 1000 .

The operation management server 1000 may receive line failure state information, update a database in which the line failure state information is recorded, and output a GUI element by graphically displaying the line failure state information (1530). That is, the operation management server 1000 may reflect monitoring results of a plurality of line monitoring devices, a plurality of patch panels, and a plurality of line interfaces in the integrated wiring board to the database in real time.

In addition, when a failure occurs, the operation management server 1000 may transmit identification information (identification information of a patch panel and identification information of a line interface) of a line in which a failure occurs to an operator (operator terminal) (1540).

As described above, according to the present invention, in an integrated wiring board composed of a number of communication devices and a number of LAN cables, it is possible to detect line failure in real time, accurately determine the line number of the line where the failure occurs, and notify the operator. Accordingly, there is an advantage of increasing the convenience of integrated wiring management and reducing the maintenance cost of the line.

In addition, according to the present invention, by installing a component for detecting a line failure in a patch panel through which a plurality of lines pass, there is an advantage in that line failure can be detected simply and easily. In addition, there is an advantage in that a line failure can be detected by a low-cost and simple method of patterning a signal induced line next to a signal line formed on an original patch panel.

In addition, according to the present invention, by simply configuring the patch panel as an analog circuit and determining whether there is a failure using ZCR information and peak information in the line monitoring device, effects such as reduction of installation cost and power saving can be achieved. .

The above-described present invention can be implemented as computer readable code on a medium on which a program is recorded. The computer-readable medium includes all types of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. there is Also, the computer may include a control unit. Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (14)

first and second differential signal lines formed on the substrate and through which differential signals flow;
first and second signal guiding lines formed at equal intervals from the first and second differential signal lines on the substrate and having the same length and the same width;
a crosstalk detector configured to detect a first crosstalk signal induced to the first signal induced line from the first differential signal line, and to detect a second crosstalk signal induced to the second signal induced line from the second differential signal line;
a differential signal amplifier configured to differentially amplify the first crosstalk signal and the second crosstalk signal and output a differential amplified signal; and
Characteristic information including amplitude information and frequency information of the differential amplified signal is extracted, and failure of a line including the first and second differential signal lines is prevented by using the extracted characteristic information and normal characteristic information pre-stored in a memory. Including; a control unit for detecting;
The pre-stored normal characteristic information,
Includes magnitude information and frequency information of a differential amplified signal generated when a differential signal normally flows through the first and second differential signal lines
Line failure detection device using crosstalk signal. According to claim 1,
The first signal organic line,
Among the plurality of signal lines formed on the substrate, it is disposed closest to the first differential signal line, maintains a constant first distance from the first differential signal line, and by a coupling capacitance effect with the first differential signal line The first crosstalk signal is induced,
The second signal organic line,
Among the plurality of signal lines formed on the substrate, it is disposed closest to the second differential signal line, maintains a constant second distance from the second differential signal line, and The second crosstalk signal is induced,
The first interval and the second interval are the same
Line failure detection device using crosstalk signal. According to claim 2,
The first signal organic line,
formed on the substrate shorter than the length of the first differential signal line formed on the substrate;
The second signal organic line,
formed on the substrate shorter than the length of the second differential signal line formed on the substrate;
The starting point of the first signal leading line corresponds to the starting point of the second signal leading line.
Line failure detection device using crosstalk signal. According to claim 1,
The crosstalk detector,
A first resistor disposed between the first signal guiding line and the ground and a second resistor disposed between the second signal guiding line and the ground;
Detecting a voltage across the first resistor as the first crosstalk signal, and detecting a voltage across the second resistor as a second crosstalk signal of the second crosstalk signal.
Line failure detection device using crosstalk signal. According to claim 4,
The first crosstalk signal and the second crosstalk signal,
having the same amplitude and frequency, with a phase difference of 180 degrees.
Line failure detection device using crosstalk signal. According to claim 1,
The control unit,
If the magnitude information of the differential amplification signal does not match the magnitude information of the pre-stored normal characteristic information or the frequency information of the differential amplification signal does not match the frequency information of the pre-stored normal characteristic information, determining that a failure has occurred
Line failure detection device using crosstalk signal. According to claim 1,
The control unit,
a feature extraction unit counting the number of times the amplified differential signal passes through a specific voltage and detecting a section in which the amplified differential signal has a level higher than a threshold voltage; and
A line monitoring unit for detecting a failure based on the number of times the differential amplified signal passes a specific voltage and a section in which the differential amplified signal has a level higher than the threshold voltage;
Line failure detection device using crosstalk signal. According to claim 7,
The threshold voltage is,
Determined based on magnitude information of a differential amplified signal generated when the differential signal normally flows through the first and second differential signal lines
Line failure detection device using crosstalk signal. According to claim 7,
The line monitoring unit,
If a section having a level higher than the threshold voltage is not detected from the differential amplification signal, it is determined that a failure has occurred.
Line failure detection device using crosstalk signal. According to claim 9,
The line monitoring unit,
Calculating frequency information of the amplified differential signal using the number of times the amplified differential signal passes through a specific voltage, and determining that a failure occurs when the frequency of the amplified differential signal is not detected
Line failure detection device using crosstalk signal. According to claim 10,
The line monitoring unit,
If the frequency information of the differential amplification signal is detected, and the frequency information in the pre-stored normal characteristic information does not match the detected frequency information, determining that a failure has occurred
Line failure detection device using crosstalk signal. According to claim 10,
The control unit,
If the frequency information in the pre-stored normal characteristic information does not match the detected frequency information, converting the amplified differential signal into digital data and Fourier transforming the digital data to extract characteristic information of the amplified differential signal
Line failure detection device using crosstalk signal. According to claim 10,
The line monitoring unit,
comparing the calculated frequency information with normal characteristic information of a plurality of types of signals to determine types of signals flowing through the first and second differential signal lines;
Line failure detection device using crosstalk signal. detecting a first crosstalk signal induced to a first signal induced line from a first differential signal line, and detecting a second crosstalk signal induced to a second signal induced line from a second differential signal line;
outputting a differential amplification signal by differentially amplifying the first crosstalk signal and the second crosstalk signal;
extracting characteristic information including magnitude information and frequency information of the differential amplified signal; and
Detecting a failure of a line including the first and second differential signal lines using the extracted characteristic information and normal characteristic information pre-stored in a memory;
The first signal guiding line and the second signal guiding line,
The first and second differential signal lines through which the differential signal flows are formed at equal intervals and have the same length and the same width;
The pre-stored normal characteristic information,
Includes magnitude information and frequency information of a differential amplified signal generated when a differential signal normally flows through the first and second differential signal lines
Line failure detection method using crosstalk signal.

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