JP7227066B2 - Turnout contact degree change detection method and turnout contact degree monitoring device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turnout contact degree change detection method and the like for detecting a change in contact degree between a base rail and a tongue rail in a turnout.

As maintenance work for turnouts in railways, measurement is performed to determine whether the contact force between the tongue rail and the base rail is appropriate. This work is carried out by a maintenance worker visiting the site, and various types of adhesion measuring devices used for this work are known (see, for example, Patent Document 1).

JP 2014-21033 A

Railway maintenance work is often performed at night, when trains are not in service, and is time-constrained. In recent years, construction of a system for centralized remote monitoring of the condition of railroad facilities is progressing, and it is desired to be able to constantly monitor the contact force of turnouts. Adhesion itself needs to be measured by actually going to the site and using a dedicated measuring device. It is possible to quickly discover signs of failure and use it for maintenance and restoration work.

A problem to be solved by the present invention is to provide a new technique capable of constantly monitoring a turnout and detecting a change in adhesion force.

A first invention for solving the above problems is
One of the close contact state in which the tongue rail is in close contact with the basic rail on the normal side and the opposite close state in which the tongue rail is in close contact with the basic rail on the opposite side is branched from one of the close contact state to the other. A data acquisition step (for example, step S1 in FIG. 9) of acquiring vibration data for each switching operation of the electric point machine that switches the instrument;
Based on the vibration data, a separation period vibration value indicating the magnitude of vibration in the separation period for separating the one contact state, and a contact period vibration value indicating the magnitude of vibration in the contact period for bringing the other contact state into contact. A calculation step (for example, steps S3 and S5 in FIG. 9) for calculating the
a detection step (for example, steps S7 and S9 in FIG. 9) of detecting a change in the degree of contact between the tongue rail and the base rail based on the separation period vibration value and the contact period vibration value; ,
It is a turnout close contact degree change detection method including.

Also, as another invention,
One of the close contact state in which the tongue rail is in close contact with the basic rail on the normal side and the opposite close state in which the tongue rail is in close contact with the basic rail on the opposite side is branched from one of the close contact state to the other. A data acquisition unit (for example, the data acquisition unit 202 in FIG. 5) that acquires vibration data for each switching operation of the electric point machine that switches the instrument;
Based on the vibration data, a separation period vibration value indicating the magnitude of vibration in the separation period for separating the one contact state, and a contact period vibration value indicating the magnitude of vibration in the contact period for bringing the other contact state into contact. A calculation unit (for example, the vibration value calculation unit 204 in FIG. 5) that calculates the
A detecting unit (for example, the contact degree detecting unit 206 in FIG. 5) that detects that the contact degree of the tongue rail in contact with the base rail has changed based on the separation period vibration value and the contact period vibration value. and,
(for example, the turnout close contact degree monitoring device 1 in FIG. 5) may be configured.

According to the first invention, etc., it is possible to detect a change in the degree of close contact between the tongue rail and the base rail from the vibration data for each switching operation of the turnout by the electric point machine. That is, the turnout can be constantly monitored to detect changes in adhesion. Vibration is generated when the tongue rail is converted by the conversion operation of the electric point machine, and this vibration is acquired as vibration data of the electric point machine. When the contact force between the base rail and the tongue rail changes, the vibration caused when the tongue rail is turned to come into contact with or separate from the base rail changes. As a result, it is possible to detect a change in the contact force between the base rail and the tongue rail of the turnout from the change in the vibration data of the electric point machine.

A second invention is based on the first invention,
The calculating step calculates a separation period vibration value and a contact period vibration value for each of the localization side and the contraposition side based on the vibration data for a plurality of consecutive times,
The detection step includes
A step (for example, step S7 in FIG. 9) of determining an abnormality in the degree of close contact on the localization side using the detection result based on the localization side separation period vibration value and the detection result based on the localization side close contact period vibration value. )and,
A step of determining an abnormality in the degree of contact on the contralateral side using the detection result based on the vibration value in the separation period on the contralateral side and the result of detection based on the vibration value in the contact period on the contralateral side (for example, FIG. 9 step S9) of
including,
This is a turnout close contact degree change detection method.

According to the second aspect of the invention, since the turning direction of the turnout changes for each turning operation, it is possible to distinguish between the normal position side and the anti-position side of the turnout and detect the change in the degree of close contact. In addition, since it is based on changes in vibration both when the tongue rail separates from the basic rail and when it comes into close contact with the base rail, it is possible to detect changes in the degree of close contact with higher accuracy.

A third invention is the first or second invention,
The calculating step extracts a data portion of a period predetermined as the separation period and the contact period during one conversion operation from the vibration data, and calculates the separation period vibration value and the contact period vibration value. ,
This is a turnout close contact degree change detection method.

According to the third invention, the separation period and the contact period are predetermined periods during the conversion operation, and the vibration value can be easily calculated by extracting the data portion of each period.

An example of an application system of the turnout close contact degree monitoring device. An example of vibration data. Explanatory drawing of the detection of the change of close_contact|adherence degree. Explanatory drawing of the detection of the change of close_contact|adherence degree. The functional block diagram of a turnout contact|adherence degree monitoring apparatus. An example of period setting data. An example of an adhesion degree change detection table. An example of detection result data. 4 is a flowchart of turnout close contact degree monitoring processing;

Preferred embodiments of the present invention will be described below with reference to the drawings. In addition, the present invention is not limited by the embodiments described below, and the forms to which the present invention can be applied are not limited to the following embodiments. Also, in the description of the drawings, the same reference numerals are given to the same elements.

[System configuration]
FIG. 1 is an application system example of a turnout close contact degree monitoring device 1 according to the present embodiment. According to FIG. 1, the turnout close contact degree monitoring device 1 is connected to a plurality of control terminals 20 installed corresponding to each point machine 10 via a communication network N so as to be able to communicate with each other.

The point machine 10 is an electric point machine that uses an electric motor 12 as a power source, and has an electric motor 12, a clutch, a changeover gear group 13, an operation lever 14, a lock lever, etc. as main components. The point machine 10 transmits the rotation output of the electric motor 12 to the conversion gear group 13 via the clutch, and the conversion gear group 13 converts it into torque suitable for driving the conversion mechanism and the lock mechanism. The operating stick 14 is linearly moved. As a result, the tongue rail connected to the operating rod 14 is changed and moved to change the position of the turnout. More specifically, as will be described later with reference to FIG. 2, after the locking mechanism has performed the unlocking operation, the contact between the tongue rail and the basic rail is released to separate the tongue rail from the basic rail. to transition during a change to a change direction. After the tongue rail is brought into close contact with the basic rail at the final stage of the conversion, the operation stick 14 is fixed by the locking operation of the locking mechanism. A series of these conversion operations are performed. The switching operation of the point machine 10 is executed under a control terminal for drive control according to a switching command output by an interlocking device (not shown). The turn command includes turn direction instructions and turn start instructions. The control terminal for drive control performs drive control regarding the rotation direction of the electric motor 12 and the start and stop of the rotation operation according to this conversion command. When the conversion is completed, the control terminal for drive control notifies the interlock device of a signal that the conversion is completed.

The point machine 10 also has a built-in or external vibration sensor 16 in the vicinity of the operation stick 14 for detecting vibration of the operation stick 14 that occurs during the switching operation. There are various kinds of vibrations that occur during the conversion operation, but vibrations generated from the operation stick 14 are large except for instantaneous impulse-like vibrations. The operating stick 14 vibrates due to the vibration transmitted from the tongue rail connected to the operating stick 14 . In particular, vibrations are large when the tongue rail is separated from or in close contact with the base rail. The vibration of the operation stick 14 can be detected by fixing the vibration sensor 16 to the housing of the rolling point machine 10 or the like. It is suitable because it can detect waves. The vibration sensor 16 is implemented by, for example, an acceleration sensor. A detection signal from the vibration sensor 16 is output to the corresponding control terminal 20 at any time.

The control terminal 20 is installed in the vicinity of the corresponding Point machine 10 or inside the housing of the Point machine 10 . The control terminal 20 also has a vibration data extracting section 24 , a transmitting/receiving section 26 and a clock section 28 .

The vibration data extraction unit 24 extracts vibration data related to one switching operation of the rolling point machine 10 from the detection signal of the vibration sensor 16 . One conversion operation is a period from the start to the stop of the rotation operation of the electric motor 12, and the timing of the start and end of the period can be determined from the information obtained from the interlocking device. Since the interlocking device outputs a conversion command including a conversion direction and a conversion start instruction to the control terminal for drive control, when the control terminal 20 acquires a signal indicating that the conversion command has been output, The timing of the start of the period can be determined. Further, when the conversion is completed, the control terminal for drive control notifies the interlocking device of a signal indicating that the conversion has been completed. By acquiring from the device, the end timing of the period can be determined. Then, the extracted vibration data is associated with data such as the turning direction and the date and time when the turning operation was performed, and is transmitted to the turnout close contact degree monitoring device 1 .

The transmission/reception unit 26 transmits/receives data to/from an external device such as the turnout close contact degree monitoring device 1 via the communication network N. FIG. The clock unit 28 measures the current date and time and the elapsed time from the specified timing.

The turnout close contact degree monitoring device 1 is realized as one device or one function of a central device of a railway equipment monitoring system that centrally monitors railway equipment including the point machine 10 . The turnout close contact degree monitoring device 1 is based on the vibration data for each switching operation of the point machine 10 acquired from the control terminal 20 for each point machine 10, and the turnout that the point machine 10 converts. A change in the degree of contact is detected by monitoring the degree of contact indicating the contact force between the base rail and the tongue rail.

[principle]
Detection of change in the degree of adhesion of the turnout based on vibration data of the point machine 10 performed by the degree-of-adhesion monitoring device 1 will be described. FIG. 2 is a diagram showing an outline of vibration data relating to one turning operation. FIG. 2 schematically shows the waveform of the detection signal from the vibration sensor 16, with the horizontal axis representing time. The switching operation of the point machine 10 includes (1) an unlocking process, which is a period in which the electric motor 12 starts rotating and the locking mechanism is unlocked from the time when the operation lever 14 is in a stopped state after being locked. (2) By starting linear motion of the action stick 14 by the conversion mechanism, the tongue rail is separated from the basic rail to start conversion, and after converting the tongue rail on the opposite side until it comes into contact with the basic rail, the tongue (3) a period until the end of the rail is brought into close contact with the basic rail; There is a locking process.

As shown in FIG. 2, as a feature of the vibration data related to one switching operation, the fluctuation of the signal waveform in the first and last periods of the switching process is larger than that in the other periods. Vibration generated when the tongue rail separates from or comes into close contact with the basic rail is transmitted to the operation stick 14 connected to the tongue rail and detected by the vibration sensor 16 built in the rolling point machine 10. It is from. Sliding vibration occurs when the tongue rail moves on the floor plate during separation/contact, but it is smaller than the vibration during separation/contact.

In other words, during the first period of the conversion process (hereinafter referred to as the "separation period"), the tongue rail, which has been in close contact with the base rail, is vibrated when it separates from the base rail after starting conversion. be. Further, in the last period of the conversion process (hereinafter referred to as the "close contact period"), the tongue rail, which has been separated from the base rail, contacts the base rail and is pressed so as to be in close contact with the base rail. This is the vibration that occurs in In the present embodiment, attention is focused on the vibration that occurs when the tongue rail separates from and comes into close contact with the basic rail, and index values (vibration values in this embodiment) of the signal waveform in the separation period and the close contact period of the vibration data are determined in advance. A change in the degree of contact (that is, whether the degree of contact has changed from the reference) is detected depending on whether it is within the reference range or outside the reference range.

If the point machine is the same, there is no great difference in the length of the vibration data period for one switching operation, and the length of each process of the unlocking process, the switching process, and the locking process is constant. can be regarded as Therefore, it is possible to divide the vibration data relating to one switching operation into each of the unlocking process, the in-transforming process, and the locking process. Then, in the in-converting process, a period of a predetermined length from the start point of the period is defined as the separation period, and a period of a predetermined length retroactively from the end point of the period is defined as the close contact period. The length of the separation period and the contact period can be determined for each point machine based on the measurement results at the time of installation of the turnout or the point machine or at the time of periodic inspection.

The average value of the amplitude of the signal waveform in each of the separation period and the contact period is used as a vibration value indicating the magnitude of vibration in the period. The average value of the amplitudes representing the magnitude of vibration in the separation period is called the vibration value in the separation period, and the average value of the amplitudes representing the magnitude of vibration in the contact period is called the vibration value in the contact period.

When the contact force between the base rail and the tip of the tongue rail changes (becomes weaker), the vibration generated when the tongue rail contacts or separates from the base rail changes. The magnitude (vibration value) changes. A proportional relationship can be seen between the change in the degree of adhesion and the vibration value. For this reason, the range of vibration values considered to be no change in the degree of adhesion is defined as a threshold range, and if the vibration value is within the threshold range, it is determined that there is no change in the degree of adhesion, and if the vibration value is outside the threshold range , it is determined that there is a change in the degree of adhesion. This threshold range can be determined, for example, based on the results of measurement at the time of installation of the turnout or point machine or at the time of periodic inspection.

In the turnout, one of the left and right tongue rails is on the close contact side with the basic rail, and the other tongue rail is on the open side away from the basic rail. By switching the tongue rails, the contact side and the opening side are reversed, one tongue rail being the opening side and the other tongue rail being the contact side. Therefore, it is necessary to distinguish between the left and right tongue rails and detect a change in the degree of close contact. In addition, for each of the left and right tongue rails, changes in the degree of contact are detected for each vibration when separating from the basic rail and when coming into close contact with the basic rail, and from the detection results, the corresponding tongue rail is detected. Determines whether there is an abnormality in the degree of close contact.

3 and 4 are diagrams for explaining detection of changes in the degree of contact. FIG. 3 shows the case where the splitter is converted from the normal position to the reverse position, and FIG. 4 shows the case where the splitter is changed from the reverse position to the normal position. In both FIGS. 3 and 4, the upper side shows the positional relationship of the tongue rail with respect to the base rail, and the lower side shows an outline of the vibration data related to the turning operation. A state in which the tongue rail 30a is in close contact with the basic rail and the tongue rail 30b is separated from the basic rail is defined as a normal position, and a state in which the tongue rail 30a is separated from the basic rail and the tongue rail 30b is in close contact with the basic rail. is reversed. A state in which the tongue rail 30a on the normal side is in close contact with the basic rail is called a normal side close contact state, and a state in which the tongue rail 30b on the opposite side is in close contact with the basic rail is called a non-side close contact state.

As shown in FIG. 3, in the vibration data when the turnout converts from the normal position to the opposite position, the main component of the separation period is the vibration when the tongue rail 30a on the normal position side, which was in the close contact state, separates from the basic rail. becomes. For this reason, this interval period is called a "location-side interval period", and the vibration value (an interval-period oscillation value) in the localization-side discrete period is called an "localization-side interval-period oscillation value". In the close contact period, the main component is the vibration when the tongue rail 30b on the opposite side, which has been separated, comes into close contact with the base rail. For this reason, this close contact period is called the "anti-contact side contact period", and the vibration value in the contact contact period on the anti-position side (contact period vibration value) is called the "anti-contact side contact period vibration value".

As shown in FIG. 4, in the vibration data when the turnout is switched from the opposite position to the normal position, the separation period mainly consists of the vibration when the tongue rail 30b on the opposite position side, which has been in close contact, separates from the base rail. become an ingredient. For this reason, this separation period is referred to as the "antiposition side separation period", and the vibration value (the separation period vibration value) in the antiposition side discrete period is referred to as the "antiposition side separation period vibration value". In the close contact period, the main component is the vibration when the tongue rail 30a on the localization side, which has been separated, comes in close contact with the base rail. For this reason, this close contact period is called the "localization side close contact period", and the oscillation vibration value (close contact period amplitude) in the localization side close contact period is called the "localization side close contact period vibration value".

Then, for one tongue rail, a change in the degree of close contact is detected using vibration data relating to at least two turning motions in different turning directions. That is, for the localization side tongue rail 30a, the localization side interval period vibration value (see FIG. 3) in the vibration data when the turnout is switched from the localization to the antiposition, and the It is detected based on the close contact vibration value (see FIG. 4) on the localization side in the actual vibration data. Specifically, when both the localization-side separation period vibration value and the localization-side contact period vibration value are outside the predetermined threshold range, that is, when there is a change, it is determined that the contact degree of the localization-side tongue rail 30a is abnormal. do.

Regarding the tongue rail 30b on the antiposition side, the contact period vibration value (see FIG. 3) on the antiposition side in the vibration data when the turnout is switched from the normal position to the antiposition and the It is detected based on the anti-position side separation period vibration value (see FIG. 4) in the vibration data at the time of conversion. Specifically, when both the vibration value during the separation period of the opposite side and the vibration value during the contact period of the opposite side are outside the predetermined threshold range, that is, when there is a change, the degree of contact of the tongue rail 30b on the opposite side is abnormal. , and determine.

Note that the threshold range may be different or the same between the separation period and the close contact period. Also, the tongue rail on the localization side and the tongue rail on the anti-position side may be different or may be the same.

[Function configuration]
FIG. 5 is a block diagram showing the functional configuration of the turnout close contact degree monitoring device 1. As shown in FIG. 5, the turnout close contact degree monitoring device 1 includes an operation unit 102, a display unit 104, a sound output unit 106, a communication unit 108, a processing unit 200, and a storage unit 300. It can be configured as a computer.

The operation unit 102 is realized by an input device such as a button switch, a touch panel, or a keyboard, and outputs an operation signal to the processing unit 200 according to the operation performed. The display unit 104 is implemented by, for example, a display device such as an LCD (Liquid Crystal Display) or a touch panel, and performs various displays according to display signals from the processing unit 200 . The sound output unit 106 is implemented by, for example, a sound output device such as a speaker, and performs various sound outputs according to sound signals from the processing unit 200 . The communication unit 108 is implemented by, for example, a wired or wireless communication device, and communicates with each control terminal 20 via the communication network N. FIG.

The processing unit 200 is realized by an arithmetic device such as a CPU (Central Processing Unit), for example, and based on programs, data, etc. stored in the storage unit 300, issues instructions to each unit constituting the turnout close contact degree monitoring device 1, and the like. Data transfer is performed, and overall control of the turnout contact degree monitoring device 1 is performed. In addition, the processing unit 200 functions as each functional block of the data acquisition unit 202, the vibration value calculation unit 204, and the adhesion degree detection unit 206 by executing the turnout contact degree monitoring program 302 stored in the storage unit 300. do. However, these functional blocks can also be configured as independent arithmetic circuits by ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), or the like.

The processing unit 200 manages all the point machines 10 to be monitored by the turnout close contact degree monitoring device 1 using the point machine management data 310 stored in the storage unit 300 . The point machine management data 310 is generated for each point machine 10, and includes a point machine ID 312 for identifying the point machine 10, period setting data 314, a contact degree change detection table 316, and a detection table 316. Result data 318 and are stored.

FIG. 6 is an example of the period setting data 314. As shown in FIG. According to FIG. 6, the period setting data 314 includes each of the unlocking process, the in-transforming process, and the locking process in one switching operation, and the separation period and contact period in the in-transforming process. , the start time and end time of the period are defined with reference to the start time of the conversion operation. In this embodiment, the common period setting data 314 is used regardless of the turning direction. may be

FIG. 7 is an example of the contact degree change detection table 316. As shown in FIG. According to FIG. 7, the contact degree change detection table 316 is a data table that defines the threshold range of the vibration value for determining whether or not the degree of contact has changed. are associated and stored. This threshold range can be determined, for example, based on the results of measurement at the time of installation of the turnout or point machine or at the time of periodic inspection.

FIG. 8 is an example of the detection result data 318. As shown in FIG. According to FIG. 8, the detection result data 318 is generated for each switching operation of the point machine 10, and includes the switching date and time when the switching operation was performed, the switching direction, the vibration data, the interval period vibration value, It stores the close contact period vibration value and the determination result of the close contact degree. The date and time of change, the direction of change, and the vibration data are acquired by the data acquisition unit 202 . The separation period vibration value and the contact period vibration value are calculated by the vibration value calculator 204 . If the turning direction is opposite to the normal position, the separation period vibration value is the separation period vibration value on the normal position side, and the contact period vibration value is the contact period vibration value on the opposite position side. If the conversion direction is from antiposition to normalization, the separation period vibration value is the separation period vibration value on the antiposition side, and the contact period vibration value is the contact period vibration value on the normalization side. The determination result of the degree of contact is the result of determination by the degree of contact detection unit 206 .

The data acquisition unit 202 acquires, from the control terminal 20 , vibration data for each switching operation of the point machine 10 together with information indicating the switching direction and the switching date and time of the point machine 10 . When the data acquisition unit 202 acquires the vibration data related to one conversion motion, the data acquisition unit 202 generates detection result data 318 related to the conversion motion.

Based on the vibration data acquired by the data acquisition unit 202, the vibration value calculation unit 204 calculates a separation period vibration value indicating the magnitude of vibration in the separation period and a contact period vibration value indicating the magnitude of vibration in the contact period. , is calculated. That is, from the vibration data, the data portion of the predetermined period as the separation period and the contact period during one conversion operation is extracted and the average amplitude is obtained, thereby calculating the separation period vibration value and the contact period vibration value. . The periods of the separation period and the contact period in the vibration data are defined as the period setting data 314 of the corresponding point machine management data 310 .

Since the turning direction of the turnout changes for each switching operation, by calculating the separation period vibration value and the contact period vibration value for each vibration data relating to one switching operation, , the separation period vibration value and the contact period vibration value are calculated for each of the localization side and the contraposition side. In addition, out of multiple vibration data with different directions of change, based on the vibration data when the contact state changes from the contact state on the localization side, the separation period vibration value on the localization side and the contact period vibration value on the opposite position side are calculated. Based on the vibration data when the contact state is changed from the contact state on the contralateral side, the separation period vibration value on the contralateral side and the contact period vibration value on the localization side are calculated.

The degree-of-contact detection unit 206 detects that there is a change in the degree of contact with which the turnout brings the tongue rail into contact with the base rail, based on the vibration value in the separation period and the vibration value in the contact period calculated by the vibration value calculation unit 204. do. In other words, it is determined whether or not the localization-side separation period vibration value and the localization-side contact period vibration value are outside the predetermined threshold range. do. Further, it is determined whether or not each of the vibration value during the separation period on the contralateral side and the vibration value during the contact period on the contralateral side is outside a predetermined threshold range. Judged as abnormal. A threshold range of vibration values for determining whether or not there is a change in the degree of contact is defined in the contact degree change detection table 316 of the relevant point machine management data 310 .

The storage unit 300 is implemented by a storage device such as a hard disk, a ROM (Read Only Memory), a RAM (Random Access Memory), etc., and stores programs and data for the processing unit 200 to integrally control the turnout contact degree monitoring device 1. , etc., and is used as a work area for the processing unit 200, and temporarily stores calculation results executed by the processing unit 200 according to various programs, input data via the operation unit 102 and the communication unit 108, and the like. be. In this embodiment, the storage unit 300 stores a turnout close contact degree monitoring program 302 and point machine management data 310 .

[Process flow]
FIG. 9 is a flowchart for explaining the flow of the turnout contact degree monitoring process. This processing is executed in parallel by the processing unit 200 in the turnout close contact degree monitoring device 1 for each of the point machines 10 .

First, the data acquisition unit 202 acquires vibration data for each turning motion transmitted from the control terminal 20 (step S1). This vibration data is added with information indicating the turning direction and the turning date and time of the turnout. Then, the vibration value calculation unit 204 extracts the data portion of the separation period period from the obtained vibration data, and calculates the average amplitude of the separation period vibration value indicating the magnitude of the vibration (step S3 ). If the conversion direction is opposite to normalization, the vibration value of the interval period is on the localization side. Further, a contact period vibration value indicating the magnitude of vibration is calculated by extracting the data portion of the contact period period from the vibration data and obtaining the average amplitude (step S5). If the conversion direction is opposite to normalization, the contact period vibration value on the opposite side is obtained.

Next, the contact degree detection unit 206 detects the separation period vibration value and the contact period vibration value calculated from the vibration data acquired this time and the separation period vibration value and the contact period vibration value calculated from the vibration data acquired last time. Based on this, a change in the contact degree of the turnout is detected.

In other words, if the current turning direction is opposite to the orientation, the separation period vibration value on the orientation side calculated from the vibration data acquired this time, and the close contact period vibration value on the orientation side calculated from the vibration data acquired last time, respectively. Whether or not there is a change in the degree of close contact is determined. If the direction of change this time is from opposite orientation to orientation, for each of the localization side contact period vibration value calculated from the vibration data acquired this time and the orientation side separation period vibration value calculated from the vibration data acquired last time, Determine whether or not there is a change in the degree of close contact. Then, regardless of the switching direction, the determination result for the localization-side separation period vibration value indicates that there is a change in the degree of contact, and the determination result for the localization-side contact period vibration value indicates that there is a change in the degree of contact. , it is finally determined that there is a change in the degree of close contact on the localization side (step S7).

Also, if the current conversion direction is opposite to the normal position, the contact period vibration value on the opposite position side calculated from the vibration data acquired this time, and the separation period vibration value on the opposite position side calculated from the vibration data acquired last time Whether or not there is a change in the degree of close contact is determined for each value. If the current conversion direction is from antiposition to normalization, the separation period vibration value of the antiposition side calculated from the vibration data acquired this time, and the contact period vibration value of the contraposition side calculated from the vibration data acquired last time, respectively Whether or not there is a change in the degree of close contact is determined. Then, regardless of the switching direction, the determination result for the vibration value during the separation period on the contralateral side indicates that there is a change in the degree of adhesion, and the determination result for the vibration value during the contact period on the contralateral side indicates that there is no change in the degree of adhesion. When there is a change, it is finally determined that there is a change in the contact degree on the contralateral side (step S9).

After performing the above processing, the processing unit 200 determines whether to end this processing, and if not (step S11: NO), returns to step S1. If it ends (step S11: YES), this process ends.

[Effect]
As described above, according to the turnout contact degree monitoring device 1 of the present embodiment, changes in the degree of contact between the tongue rail and the basic rail are detected from the vibration data for each switching operation of the turnout by the point machine 10. By doing so, it is possible to constantly monitor the turnout and detect changes in the contact force. That is, vibration occurs when the tongue rail is converted by the switching operation of the point machine 10, but this vibration is transmitted to the point machine 10 connected to the tongue rail, and the vibration sensor of the point machine 10 16 as vibration data. When the contact force between the base rail and the tongue rail changes, the vibration caused when the tongue rail is turned to come into contact with or separate from the base rail changes. As a result, it is possible to detect a change in the contact force between the base rail and the tongue rail of the turnout from the change in the vibration data of the point machine 10 .

[Modification]
It goes without saying that the embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be changed as appropriate without departing from the scope of the present invention.

(A) Determining whether or not there is a change In the above-described embodiment, it is determined that there is a change in the degree of contact when the vibration value of the separation period vibration value and the contact period vibration value is outside the predetermined threshold range. However, this determination of "changed" may be made step by step. Specifically, in the contact degree change detection table 316 (see FIG. 7), the range of vibration values in which the degree of contact is “changed” is defined as a plurality of stepwise ranges, and from the threshold range for determining “no change” The degree of "changed" is determined to increase as the distance increases, such as "slightly changed" or "largely changed". Then, depending on the combination of the degree of "changed" determined for each vibration value, the degree of "abnormality" in the adhesion degree on the localization side or the antiposition side is changed to "sign of abnormality" or "inspection required". step by step.

(B) Vibration sensor 16
The vibration sensor 16 can use a multi-axis sensor such as a two-axis sensor or a three-axis sensor. For example, when a two-axis vibration sensor is used, it is preferable to provide a plane formed by two orthogonal axes to coincide with the movement plane of the tongue rail. In the case of a three-axis vibration sensor, the installation posture is arbitrary, but for example, the plane formed by two of the three axes coincides with the movement plane of the tongue rail, and one of the two axes It is preferable to adopt a posture in which the axis of the operation stick 14 coincides with the linear motion direction. When these multiaxial vibration sensors are used, the values detected by each axis may be regarded as vectors having components in the directions of the axes, and the magnitude of these vectors may be treated as the values detected by the sensors.

(C) Vibration value In the above-described embodiment, the average value of the amplitude of the signal waveform in each period of the separation period and the contact period is used as the vibration value indicating the magnitude of the vibration in the period, and the signal waveform in the separation period and the contact period was used as an index value. However, instead of the average amplitude of the signal waveform, another index value representing the magnitude of vibration may be used. For example, the root mean square (RMS) of amplitude, effective value, crest factor, etc. may be used as index values.

(D) Final Determination of Change in Adhesion Degree In the above-described embodiment, for example, on the localization side, the determination result for the separation period vibration value on the localization side indicates that there is a change in the degree of adhesion on the localization side. It has been explained that when the determination result of the vibration value in contact period indicates that there is a change in the degree of contact, the final determination is made that there is a change in the degree of contact on the localization side. However, the final determination may be made based on one vibration data instead of combining the determination results of a plurality of vibration data. Further, the final determination may be made by combining the determination results of vibration data related to three or more consecutive conversion motions.

REFERENCE SIGNS LIST 1 turnout contact degree monitoring device 200 processing unit 202 data acquisition unit 204 vibration value calculation unit 206 contact degree detection unit 300 storage unit 302 turnout contact degree monitoring program 310 point machine management data 312... Point machine ID, 314... Period setting data 316... Adhesion degree change detection table, 318... Detection result data 10... Point machine 12... Electric motor, 13... Conversion gear group, 14... Operation pin, 16... Vibration sensor 20... Control terminal 24... Vibration data extraction unit 26... Transmission/reception unit 28... Clock unit

Claims (4)

One of the close contact state in which the tongue rail is in close contact with the basic rail on the normal side and the opposite close state in which the tongue rail is in close contact with the basic rail on the opposite side is branched from one of the close contact state to the other. a data acquisition step of acquiring vibration data for each switching operation of the electric point machine that switches the instrument;
Based on the vibration data, a separation period vibration value indicating the magnitude of vibration in the separation period for separating the one contact state, and a contact period vibration value indicating the magnitude of vibration in the contact period for bringing the other contact state into contact. a calculating step of calculating
a detection step of detecting a change in the degree of contact between the tongue rail and the base rail based on the separation period vibration value and the contact period vibration value;
A method for detecting a change in the degree of adhesion of a turnout. The calculating step calculates a separation period vibration value and a contact period vibration value for each of the localization side and the contraposition side based on the vibration data for a plurality of consecutive times,
The detection step includes
a step of determining an abnormality in the degree of close contact on the localization side using the detection result based on the localization side separation period vibration value and the detection result based on the localization side close contact period vibration value;
a step of determining an abnormality in the degree of contact on the contralateral side using the detection result based on the vibration value during the separation period of the contralateral side and the result of the detection based on the vibration value during the contact period on the contralateral side;
including,
2. The method for detecting a change in the contact degree of a turnout according to claim 1. The calculating step extracts a data portion of a period predetermined as the separation period and the contact period during one conversion operation from the vibration data, and calculates the separation period vibration value and the contact period vibration value. ,
3. The method for detecting a change in degree of adhesion of a turnout according to claim 1 or 2. One of the close contact state in which the tongue rail is in close contact with the base rail on the normal side and the opposite side close state in which the tongue rail is in close contact with the basic rail on the opposite side is branched from one of the close contact state to the other. a data acquisition unit that acquires vibration data for each conversion operation of an electric point machine that converts a container;
Based on the vibration data, a separation period vibration value indicating the magnitude of vibration during the separation period for separating the one contact state and a contact period vibration value indicating the magnitude of vibration during the contact period for bringing the other contact state into contact. a calculation unit that calculates and
a detection unit that detects a change in the degree of contact between the tongue rail and the base rail based on the separation period vibration value and the contact period vibration value;
A turnout close contact monitoring device.

Images