KR20190116758A - Apparatus for monitoring point machine - Google Patents

Abstract

The present application relates to a line converter monitoring apparatus. According to an embodiment of the present invention, the line converter monitoring apparatus can comprise: a load pattern measuring unit measuring a load current measured during operation of a line converter and generating a load pattern; a detection signal receiving unit for receiving a detection signal indicating a position of a tongue rail (locking unit) according to the operation of the line converter; and a fault detection unit for determining a fault occurring in the line converter using the load pattern and the detection signal.

Description

Line switch monitoring device {Apparatus for monitoring point machine}

The present application relates to a device for monitoring a line changer, and more particularly to a line changer monitoring device capable of detecting a failure of a line changer in real time and automatically determining a type of failure.

As the proportion of railways to the industry is increasing, management of components in railways has emerged as an important issue for the stable operation of trains. In particular, the track diverter is an important component to safely change the direction of travel of the train, and early failure detection is very important because it can cause a major accident such as train derailment due to the failure of the track diverter.

Diagnosis of the line changeover is a lot of manpower is input, the late run time of the train is running late, there is a problem that can not be detected in real time with the current system.

Korean Laid-Open Patent No. 2000-0006607

The present application is to provide a line switching device monitoring device that can detect the failure of the line switch in real time, and can automatically determine the type of failure.

An apparatus for monitoring a line changer according to an embodiment of the present invention includes a load pattern measuring unit configured to generate a load pattern by using a load current measured during operation of the line changer; A detection signal receiver for receiving a detection signal indicating a position of a tongle (locking unit) according to the operation of the line switcher; And a failure detection unit for determining a failure occurring in the line changer by using the load pattern and the detection signal.

The load pattern measuring unit may convert the load current into a root mean square (RMS), sample the effective value, and generate the load pattern as the load pattern.

The load pattern measuring unit may divide the load pattern into a plurality of time intervals according to a predetermined time interval.

Here, the detection signal receiving unit, when the first limit switch located in the positive position or the second limit switch located in the face is touched by the cam bar for moving the tongue rail, the first limit switch or the second limit switch is touched It can receive a detection signal output in response to the.

Here, the cam bar includes an inclined surface and a horizontal plane, and when the cam bar moves to the face or face, the first limit switch or the second limit switch is in contact with the cam bar on the horizontal plane through the inclined surface, The first limit switch or the second limit switch may generate the detection signal from the contact with the inclined surface of the cam bar.

Here, the fault detection unit may determine the failure of the line changer by using any one of a current amount in each time section set in the load pattern, a pattern shape in each time section, and a reception timing of the detection signal. have.

Here, the failure detector may determine that a failure has occurred in a frequency converter of the line converter when the average value of the current included in the initial delay period set in the load pattern is equal to or greater than a reference delay value.

Here, the failure detection unit, if the maximum peak value of the current included in the unlocking section or the locking section set in the load pattern exceeds the locking peak value, it is determined that the locking device for fixing the position of the tongue rail has occurred, When the average value of the current included in the unlocking section or the locking section exceeds the reference locking value it can be determined that a jam or stuck in the motor driving the locking device.

Here, the fault detection unit, if the maximum peak value of the current included in the identification section set in the load pattern exceeds the identification peak value, or the average value of the current included in the identification section exceeds the reference identification value, It can be determined that jamming or sticking has occurred.

Here, when the average value of the current included in the end section set in the load pattern exceeds the reference end value, the fault detection unit may be determined by the performance degradation of the motor driving the tong rail or malfunction of the position detection sensor of the motor. have.

Here, the failure detection unit generates a pattern shape including an increase or decrease pattern from a plurality of consecutive samples extracted in the unlocking or locking interval set in the load pattern, and if the generated pattern shape is different from the reference locking pattern It may be determined by an error of the frequency converter or the motor position sensor of the line converter.

Here, the failure detection unit generates a pattern shape including an increase or decrease pattern from a plurality of consecutive samples extracted in the identification section set in the load pattern, and if the generated pattern shape is different from the reference identification pattern, the tow rail It can be determined that an abnormality has occurred in driving of.

In this case, when the tungsten rail is moved from the face to the face, the fault detection unit includes a first holding time from the start time of the identification section set in the load pattern to the end of the detection of the face detection signal, and the time of detection of the face detection signal. To measure the second holding time from the identification period to the end time, and if the first holding time and the second holding time are outside the standard holding time range, it may be determined that a failure has occurred in the limit switch or the tongue rail. .

Here, the monitoring device of the line changer according to an embodiment of the present invention, classify the severity according to the type of the failure extracted by the failure detection unit, set the warning step according to the severity, warning corresponding to each warning step It may further include a failure analysis unit for outputting.

In addition, the solution of the said subject does not enumerate all the characteristics of this invention. Various features of the present invention and the advantages and effects thereof may be understood in more detail with reference to the following specific embodiments.

The apparatus for monitoring a line changer according to an embodiment of the present invention can detect a failure of the line changer in real time, and can automatically determine the type of failure. That is, since it is possible to automate the fault detection and fault diagnosis for the line changer, it is possible to greatly reduce the manpower required for the management of the line changer, it is possible to perform the diagnosis of the line changer even in a time difficult for human management.

The apparatus for monitoring a line changer according to an embodiment of the present invention monitors the line changer by using the amount of current in each time section set in the load pattern, the pattern shape in each time section, the reception timing of the detection signal, and the like. As a result, accurate fault detection and fault diagnosis are possible.

1 is a schematic diagram showing a line switch monitoring system according to an embodiment of the present invention.
Figure 2 is a block diagram showing a line switch monitoring device according to an embodiment of the present invention.
3 and 4 is a schematic diagram showing a load pattern of the line converter monitoring apparatus according to an embodiment of the present invention.
5 is a schematic diagram showing generation of detection signals according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. However, in describing the preferred embodiment of the present invention in detail, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when a part is 'connected' to another part, it is not only 'directly connected' but also 'indirectly connected' with another element in between. Include. In addition, the term 'comprising' of an element means that the element may further include other elements, not to exclude other elements unless specifically stated otherwise. In addition, terms such as “unit” and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.

1 is a schematic diagram showing a line switch monitoring system according to an embodiment of the present invention.

Referring to FIG. 1, the line changeover monitoring system according to an embodiment of the present invention may include a line changer 1 and a line changer monitoring apparatus 100.

Hereinafter, a line converter monitoring system according to an embodiment of the present invention will be described with reference to FIG. 1.

The track switch 1 is installed where the track is branched, and can control the driving direction of the train. That is, the line converter 1 may drive a cam bar (not shown) to move the locking unit 11 to the left or right, in which case the tungsten t fixed on the locking unit 11 is the left rail. It can be attached to or attached to the right rail. Here, the line converter may be a sleeper type line converter or a nose-operated line converter.

As shown in FIG. 1, when the tongue rail t is in close contact with the right rail, the train may travel in a straight direction, and when the tongue rail t is in close contact with the left rail, the train runs in the right direction. can do. Here, the driving direction of the train according to the contact direction of the t-rail (t) may be variously set according to the embodiment.

Since the driving direction of the train is determined by the track switcher 1, when the track switcher 1 malfunctions or malfunctions, there is a risk of large-scale damage such as a train accident. Therefore, it is necessary to accurately monitor the operation of the line changer 1 to determine whether a failure occurs.

The line switch monitoring device 100 may monitor the operation of the line switch 1, and may automatically determine whether the line switch 1 has a failure or the type of a failure. In detail, the line switch monitoring device 100 receives a load current measured when the line switch 1 operates and a detection signal received from a limit sensor provided at positions corresponding to the position or the position of the tungle t, respectively. By using this method, failure determination and monitoring of the line changer 1 can be performed.

Figure 2 is a block diagram showing a line switch monitoring device according to an embodiment of the present invention.

Referring to FIG. 2, the apparatus 100 for monitoring a line changer according to an exemplary embodiment may include a load pattern measuring unit 110, a detection signal receiving unit 120, a failure detecting unit 130, and a failure analyzing unit 140. It may include.

Hereinafter, the line switch monitoring device 100 according to an embodiment of the present invention will be described with reference to FIG. 2.

The load pattern measuring unit 110 may generate a load pattern by using the load current measured when the line converter 1 operates. The load current can be measured as shown in Fig. 3A. Subsequently, the load pattern measuring unit 110 converts the load current into a root mean square (RMS) as shown in FIG. 3 (b), and then, as shown in FIG. Can be generated. That is, the load pattern measuring unit 110 may generate a load pattern as shown in FIG. 4 by using the load current. When the load pattern is generated in this way, the measured load current can be treated as a constant for each section and element, and through this, it is possible to effectively perform logical judgment. The measured load current, rms value, and load pattern can be stored in a database.

The load pattern measuring unit 110 may divide the load pattern into a plurality of time intervals according to a preset time interval. That is, as shown in Figure 4, the load pattern is the entire measurement section (A), the initial delay section (B), the unlocking section (C), the identification section (D), the locking section (E) and the end section (F). ) Can be distinguished.

Specifically, the entire measurement section A corresponds to the time required for the line changer 1 to move the tongue rail t once, and the initial delay section B is initially determined when the line changer 1 operates. Corresponds to the delay time required. The unlocking section (C) corresponds to the time interval for releasing the lock so that the locking unit (11) is movable, and the identification section (D) moves the locking unit (11) to shift the tongue rail from position to position or from position to position. Corresponds to the moving section. In addition, the locking section (E) corresponds to a section for locking the locking unit 11 is fixed to the moved position or face, the end section (F) corresponds to the preliminary section after the movement of the tongue rail.

Here, each time period may be distinguished according to a preset time interval. For example, when designing the line converter 1, the time interval set to be consumed in each time period is distinguished, or the time interval is measured by the average time required for each section by measuring the operation of the line switch 1. Can be set in advance. In addition, according to the exemplary embodiment, the load pattern measuring unit 110 may automatically distinguish the patterns shown in the load patterns by analyzing them.

The detection signal receiving unit 120 may receive a detection signal indicating the position of the tongue rail t according to the operation of the line switch 1. The first limit switch s1 may be positioned at the position and the second limit switch s2 may be positioned at the position. Subsequently, when the cam bar cb moves to move the tongue rail t, the first limit switch s1 or the second limit switch s2 may touch the cam bar cb and the cam bar cb. The touched limit switches s1 and s2 may output detection signals in response to the touch.

Specifically, as shown in FIG. 5, the cam bar cb may have an inclined surface f1 and a horizontal surface f2, and when the cam bar cb moves to the top, the first limit switch s1 may be present. The contact may be maintained on the horizontal surface f2 past the inclined surface f1 of the cam bar cb. That is, the first limit switch s1 may be in contact with the inclined surface f1 while the cam bar cb is moving. When the cam bar cb is finished and the tongue rail t is positioned at the positive position, the first limit switch s1 may be formed. One limit switch s1 may contact the horizontal plane f2 of the cam bar cb. Here, since the first limit switch s1 generates a detection signal when pressed by the cam bar cb, the first limit switch s1 may generate and transmit a stereotactic detection signal from the contact with the inclined surface f1. Even when the cam bar cb moves to the face, the second limit switch s2 can generate and transmit the face detection signal in the same manner. Therefore, the detection signal receiver 120 may receive a position detection signal or a face detection signal transmitted by the first limit switch s1 or the second limit switch s2. That is, the received detection signal can be used to determine whether the current tongle (t) is located in position or face.

The failure detection unit 130 may determine a failure occurring in the line switch 1 using the load pattern and the detection signal. Specifically, the failure detection unit 130 may determine the failure of the line switch 1 by using the amount of current in each time period set in the load pattern, the pattern shape in each time period, the reception timing of the detection signal, and the like. have.

First, the failure detector 130 may determine the failure of the line switch 1 using the amount of current in the time interval.

The failure detector 130 may calculate an average value of the current included in the initial delay period B, and compare the calculated average value with a preset reference delay value. Here, when the calculated average value is greater than or equal to the reference delay value, it may be determined that a failure has occurred in the frequency converter of the line converter 1. That is, since the initial delay section B is before the line switch 1 operates, in the normal case, no current greater than the reference delay value should occur in the initial delay section B. FIG. When a current higher than the reference delay value occurs in the initial delay section B, it may be considered that there is a problem in the initial start-up function of the frequency converter of the line converter 1. Therefore, the failure detector 130 may determine that a failure occurs in the frequency converter of the line switch 1 when the average value of the current in the initial delay period B is equal to or greater than the reference delay value.

In addition, the failure detection unit 130 may extract the maximum peak value of the current included in the unlocking section (C) or the locking section (E), it is possible to compare the extracted maximum peak value with a preset lock peak value. Subsequently, when the maximum peak value exceeds the locked peak value, it can be determined that a jam has occurred in the locking device for fixing the position of the toe rail t. The higher current required to drive the lock as compared to the normal case can be seen that more force is required to drive the lock. Therefore, the failure detection unit 130 may determine that a failure such as a jam in the locking device has occurred. In addition, the failure detection unit 130 may calculate an average value of the current included in the unlocking section C or the locking section E. When the calculated average value exceeds the reference locking value, the motor driving the locking device It can be determined that jamming or sticking has occurred.

In addition, the failure detection unit 130 may calculate the maximum peak value and the average value of the current included in the identification section (D) set in the load pattern, the maximum peak value and the average value, respectively, the preset peak peak value and reference identification value Can be compared with Here, when the maximum peak value is larger than the identification peak value or the average value exceeds the reference identification value, it can be determined that a jam or sticking occurs in the tongue rail.

In addition, when the average value of the current included in the end section (F) exceeds the preset reference end value, the failure detection unit 130 determines that the performance of the motor driving the tongue rail or the malfunction of the position detection sensor of the motor has occurred. can do. That is, in the normal case, the operation is already completed in the end section F so that the load current does not occur more than the reference end value in the line converter 1. Therefore, the generation of a current equal to or greater than the reference end value in the end section F may result in a decrease in the performance of the motor and the operation of the motor, such as a lock, is already completed in the end section F. However, it may be determined that the motor corresponds to the case where the motor is continuously operated due to an abnormality in the position detection sensor of the motor.

On the other hand, according to the embodiment, it is also possible for the failure detection unit 130 to detect a failure using the pattern shape in each time section.

Specifically, the failure detection unit 130 may extract a plurality of consecutive samples in the unlocking section C or the locking section E, and generates a pattern shape including an increase or decrease pattern for the size of the extracted samples. can do. Thereafter, the generated pattern shape is compared with the preset reference locking pattern, and when the reference locking pattern and the generated pattern shape are different from each other, it may be determined that a failure has occurred. That is, in the normal case, there may be a formal pattern of increase and decrease according to time sequence (increase-> decrease-> increase-> decrease-> increase). Therefore, when the extracted pattern shape does not match the standard reference locking pattern, it may be determined that a failure occurs in the line switch 1. Specifically, when the pattern shape in the unlocking section C or the locking section E is different, it may be determined that an error of the frequency converter or the motor position detecting sensor of the line switch 1 occurs.

In addition, the failure detection unit 130 may extract a pattern shape including an increase or decrease pattern by extracting each sample even in the identification section D, and compare the extracted pattern shape with a reference identification pattern. Here, when the generated pattern shape is different from the reference identification pattern, it can be determined that an abnormality has occurred in driving the tong rail.

In addition, the failure detection unit 130 may detect a failure of the line switch 1 using the reception timing of the detection signal. That is, referring to FIG. 4, when the fault detection unit 130 moves the tongue rail t from the face to the face, from the start time of the identification section D set in the load pattern to the end of detection of the face detection signal. The second holding time T2 and the first holding time T1 from the time of detecting the position detection signal to the end time of the identification section can be measured, respectively. Thereafter, the failure detection unit 130 may compare the first holding time T1 and the second holding time T2 with a reference holding time range, and the first holding time T1 or the second holding time T2 is based on the comparison. If it is out of the holding time range, it can be determined that a failure has occurred in the limit switch or the tongue rail.

Specifically, since the anti-counter detection signal is maintained until the second limit switch s2 descends the inclined surface f1 of the cam bar cb, the anti-counter detection signal can be detected within the identification section D. FIG. Thereafter, when all the slopes f1 are lowered, signals may not be input. On the other hand, the stereotactic detection signal may be detected when the first limit switch s1 contacts the inclined surface f1 of the cam bar cb before the identification section D is completed. Thereafter, when the identification section D is completed, the first limit switch s1 may be in contact with the horizontal plane f2 of the cam bar cb to maintain the position detection signal.

Therefore, each of the first holding time T1 and the second holding time T2 sensed in the identification section D may be determined by states of the cam bar and the limit sensor. Therefore, when the first holding time T1 or the second holding time T2 is out of the allowable reference holding time range, it may be determined that an abnormality has occurred in the limit switch or the tongue rail.

In addition, the failure detection unit 130 may determine whether or not the failure by detecting a variety of cases, such as the load current is not measured, or the measurement of the load current is interrupted in the middle.

The failure analysis unit 140 may classify the severity according to the type of the fault extracted from the failure detection unit 130 and set a warning level according to the severity. Then, the failure analysis unit 140 may output a warning corresponding to each warning step, to notify the operator of the failure.

For example, as shown in Table 1 below, the severity can be classified into high, medium, and low, and an alert level corresponding to each severity can be set to generate an alert. Here, the occurrence conditions corresponding to each warning step may be set in advance. Therefore, when the failure analysis unit 140 corresponds to the occurrence condition, it is possible to distinguish each warning step and output a corresponding warning.

Severity Warning steps occurrence condition Follow-up Ha Tier 1 warning 1) 1 step or more unit warning occurs Check request medium Tier 2 warning 1) One or more unit warnings occur in two stages 2) More than 10% of unit warnings occur in one stage Check request Prize Tier 3 warning 1) One or more unit warnings occur in three levels 2) More than 10% of unit warnings occur in two levels Check request

On the other hand, the occurrence conditions corresponding to each warning step may be set according to Table 2 below.

Severity warning
step Diagnosis result about occurrence condition Remarks Diagnostic conditions Early
delay
section Locked
release
section Sympathy
section Locked
section End
section Ha Stage 1 1) Current amount diagnosis ○ × × × ○ 2) pattern diagnosis × ○ × ○ × 3) Detection signal diagnosis × × ○ × × medium Tier 2 1) Current amount diagnosis × × ○ ○ × 2) pattern diagnosis × × × × ○ 3) Detection signal diagnosis × × × × × Prize Tier 3 1) Current amount diagnosis × ○ × × × 2) pattern diagnosis × × ○ × × 3) Detection signal diagnosis × × × × ×

Failure analysis unit 140 may generate a warning according to the warning step, to inform the operator that the failure occurs in the line switch (1). In this case, the failure analysis unit 140 may output a warning sound or output a warning sentence to a display device to notify the operator of the warning. According to the embodiment, it is also possible to send an alert text message or send an e-mail or the like to the operator's mobile phone.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be substituted, modified, and changed in accordance with the present invention without departing from the spirit of the present invention.

1: Line changer 11: Locking unit
100: line converter monitoring device 110: load pattern measurement unit
120: detection signal receiving unit 130: fault detection unit
140: failure analysis unit

Claims (14)

A load pattern measuring unit configured to generate a load pattern by using a load current measured during operation of the line changer;
A detection signal receiver for receiving a detection signal indicating a position of a tongle (locking unit) according to the operation of the line switcher; And
And a failure detection unit for determining a failure occurring in the line changer by using the load pattern and the detection signal.
The method of claim 1, wherein the load pattern measuring unit
And converting the load current into a root mean square (RMS), sampling the effective value, and generating the load pattern as the load pattern.
The method of claim 1, wherein the load pattern measuring unit
And the load pattern is divided into a plurality of time intervals according to a predetermined time interval.
The method of claim 1, wherein the detection signal receiving unit
When the first limit switch located at the position or the second limit switch located at the position is touched by the cam bar for moving the tongue rail, the detection signal output by the first limit switch or the second limit switch in response to the touch. Line switch monitoring device, characterized in that for receiving.
The method of claim 4, wherein
The cam bar includes an inclined surface and a horizontal surface,
When the cam bar moves to the face or face, the first limit switch or the second limit switch passes the inclined surface and maintains contact with the cam bar on the horizontal surface,
And the first limit switch or the second limit switch generates the detection signal from the contact with the inclined surface of the cam bar.
The method of claim 1, wherein the failure detection unit
A line changer monitoring characterized in that the failure of the line changer is determined by using any one of the amount of current in each time section set in the load pattern, the pattern shape in each time section, and the reception timing of the detection signal. Device.
The method of claim 6, wherein the fault detection unit
And determining that a failure has occurred in a frequency converter of the line converter when the average value of the current included in the initial delay period set in the load pattern is equal to or greater than a reference delay value.
The method of claim 6, wherein the fault detection unit
If the maximum peak value of the current included in the unlocking section or the locking section set in the load pattern exceeds the locking peak value, it is determined that the locking device for fixing the position of the tongue rail has occurred,
The device for monitoring the line changer, characterized in that the locked or stuck in the motor driving the lock device when the average value of the current in the unlocking section or the locking section exceeds the reference locking value.
The method of claim 6, wherein the fault detection unit
If the maximum peak value of the current included in the identification section set in the load pattern exceeds the identification peak value, or if the average value of the current included in the identification section exceeds the reference identification value, the jammed or stuck on the towrail has occurred. Line switch monitoring device characterized in that for determining.
The method of claim 6, wherein the fault detection unit
If the average value of the current included in the end section set in the load pattern exceeds the reference end value, the line changer monitoring characterized in that it is determined by the performance degradation of the motor driving the tongue rail or malfunction of the position detection sensor of the motor. Device.
The method of claim 6, wherein the fault detection unit
Generating a pattern shape including an increasing or decreasing pattern from a plurality of consecutive samples extracted in the unlocking or locking interval set in the load pattern, and if the generated pattern shape is different from the reference locking pattern, the frequency converter of the line converter Or determining by an error of the motor position sensor.
The method of claim 6, wherein the fault detection unit
A pattern shape including an increase or decrease pattern is generated from a plurality of consecutive samples extracted in the identification section set in the load pattern. When the generated pattern shape is different from a reference identification pattern, an abnormality occurs in driving of the tow rail. And a line switch monitoring device characterized in that it is determined.
The method of claim 6, wherein the fault detection unit
When the tungsten rail is moved from the face to the face, the first holding time from the start time of the identification section set in the load pattern to the end of detection of the face detection signal, and the end of the identification section from the detection time of the position detection signal. Measuring a second holding time up to a time, and if the first holding time and the second holding time are out of the reference holding time range, determining that the limit switch or the tongue rail has failed; .
The method of claim 1,
And a failure analysis unit for classifying the severity according to the type of the failure extracted by the failure detection unit, setting a warning level according to the severity, and outputting a warning corresponding to each warning step. .

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