JP2021024368A - Field control terminal and determination device - Google Patents

Abstract

To realize a wholly novel technology related to acquisition of information that can be a criterion of whether or not a changeover operation of a point switch is abnormal without newly installing a measurement terminal.SOLUTION: A field control terminal 30 identifies a signal line allocated with an input/output signal to a point switch 41 based on timing of change in a bit of a parallel signal lines connected to a field equipment side terminal 34 and calculates a changeover time of the point switch. The calculated changeover time is output to a determination device 10 via a coordinated logical unit 20 together with a changeover direction of the point switch 41, and the determination device 10 determines the point switch 41 and the changeover direction corresponding to the input changeover time, and makes a status determination on whether or not a changeover operation of the corresponding point switch 41 is abnormal based on the changeover time.SELECTED DRAWING: Figure 2

Description

The present invention relates to a field control terminal or the like that performs signal conversion between an interlocking logic unit and a field device.

In railways, in order to realize safe transportation, various methods have been developed to monitor the condition of a turning machine, which is one of the railway equipment, and to quickly detect abnormalities and their signs. For example, in Patent Document 1, as a condition monitoring of a turning machine, the conversion torque data related to one conversion operation is compared with the stored past conversion torque data of the turning machine. A technique for determining the presence or absence of an abnormality in the conversion operation is disclosed.

Japanese Unexamined Patent Publication No. 2015-9651

In recent years, with the development of information and communication technology, the development of technology for centrally monitoring the state of railway equipment has been promoted. In other words, the measurement data measured by the measurement terminal installed in the railway equipment to be monitored (in the case of a rotating machine, the measurement data at the time of conversion operation such as conversion torque data and operating current data) is transmitted to the equipment room, etc. via the transmission line. This is a method of transmitting to the determination device installed in the vehicle and determining the state of the railway equipment to be monitored based on the received measurement data.

A large number of tumblers are installed along the railway line, and in the form of transmitting the measurement data (conversion torque data and operating current data) for each conversion operation of each of these many tumblers to the determination device, the determination is made. A large amount of data will be transmitted to the device, and if the communication capacity of the transmission line connecting the judgment device and each measurement terminal of the railway equipment is limited, problems such as data loss during transmission will occur. obtain. In addition, the determination device is required to have a relatively high processing capacity because it performs state determination for a large number of turning machines in parallel. In addition, it is necessary to provide a measuring terminal for each rolling machine, and there is also a problem of cost required for installation and maintenance of the measuring terminal.

The problem to be solved by the present invention is to realize a completely new technique for acquiring information that can be used as a criterion for determining whether or not the conversion operation of the rolling machine is abnormal without installing a new measuring terminal. That is.

The first invention for solving the above problems is
A parallel signal line of one or more field equipment including at least a turning machine is connected to the field equipment side terminal, an interlocking logic unit is connected to the interlocking logic unit side terminal, and the interlocking logic unit and the field equipment are connected. It is a field control terminal that performs signal conversion between
A signal line (hereinafter referred to as "conversion control line") to which a conversion control instruction signal for the switch is assigned based on the change timing of bits of each signal line connected to the field equipment side terminal, and the above. Specific means for identifying the signal line to which the display information of the turning machine is assigned (hereinafter referred to as "conversion display line"), and
A calculation means for calculating the conversion time related to the conversion operation of the turning machine based on the bit change of the conversion control line and the conversion display line.
An output control means for outputting the calculated information indicating the conversion time to the outside,
It is a site control terminal equipped with.

According to the first invention, in the field control terminal, the parallel signal lines connected to the field control terminal are connected to the field device side terminals even if the input / output signals are not assigned to the field devices from the outside. Based on the change timing of the bits of the signal line, the signal line to which the input / output signal is assigned to the switch can be specified, and the conversion time of the switch can be calculated. Then, the calculated conversion time is output to the outside. The amount of data is smaller than, for example, when transmitting conventional measurement data such as conversion torque data and operating current. Further, the conversion time is one of the information that can be used as a criterion for determining whether or not the conversion operation of the turning machine is abnormal. Therefore, according to the present invention, it is possible to realize a completely new technique for acquiring information that can be used as a criterion for determining whether or not the conversion operation of the turning machine is abnormal without providing a new measuring terminal. it can.

The second invention is the first invention.
The specific means
As the conversion control line, a first control line to which an instruction signal for conversion control on one side of the localization side and the reverse side in the conversion direction is assigned, and a second control line to which an instruction signal for conversion control on the other side is assigned. Identify the control line and
As the conversion display line, a first display line to which display information indicating that the conversion state is on one side is assigned and a second display line to which display information indicating that the conversion state is on the other side are assigned are specified. To do
It is a site control terminal.

According to the second invention, a signal line to which a signal relating to the conversion operation to one of the localization side and the reverse side of the turning machine is assigned and a signal relating to the conversion operation to the other side are assigned. The signal line can be distinguished and specified.

The third invention is the second invention.
The calculation means calculates the time from the bit change of the first control line to the bit change of the first display line, or the time from the bit change of the second control line to the bit change of the second display line. Calculated as the conversion time,
It is a site control terminal.

According to the third invention, the conversion time required for the conversion operation to one of the localization side and the reverse side of the turning machine and the conversion time required for the conversion time to the other side are separately calculated. be able to.

The fourth invention is the second or third invention.
The specific means
Of the signal lines connected to the field equipment side terminals, the first signal line in which the bit value changes to the output bit value and the first change in which the bit value of the first signal line changes to the output bit value. The second signal line in which the bit value changes from the timing to the bit value without output within a predetermined allowable time range, and the second signal line in which the bit value changes to the bit value with output within the predetermined conversion equivalent time range from the first change timing. The combination of the first to third signal lines with the three signal lines is detected, the first signal line is used as the first control line, the second signal line is used as the second display line, and the third signal line is used as the third signal line. Specified as the first display line,
It is a site control terminal.

According to the fourth invention, it is possible to specify a signal line to which an input / output signal relating to a conversion operation to one of the localization side and the reverse side of the tumbler is assigned.

The fifth invention is the fourth invention.
The specific means further
Of each signal line connected to the field equipment side terminal, the fourth signal line whose bit value has changed to the bit value with output is detected.
As the third signal line, the bit value is changed to the output bit value within the conversion equivalent time range from the first change timing, and the bit value of the fourth signal line is changed to the output bit value. 2 The third signal line in which the bit value changes to the no output bit value within the permissible time range from the change timing is detected.
As the second signal line, the bit value changes from the first change timing to the no output bit value within the permissible time range, and the bit value is output within the conversion equivalent time range from the second change timing. The second signal line changed to a bit value is detected,
The fourth signal line is specified as the second control line.
It is a site control terminal.

According to the fifth invention, it is possible to specify the signal line to which the input / output signals related to the conversion operation on the other side are assigned.

The sixth invention is the sixth invention in any of the second to fifth inventions.
The specific means
When the specified first control line and the second control line simultaneously have output bit values, or when the specified first display line and second display line simultaneously have output bit values, the said It has a specific canceling means for canceling the identification of the conversion control line and the identification of the conversion display line.
It is a site control terminal.

According to the sixth invention, when the signal line of the tumbler is erroneously specified, the erroneous identification can be canceled. Since the signal lines of other on-site equipment other than the turning machine can be connected to the on-site control terminal, the signal lines of other on-site equipment may be changed depending on the timing of bit change of the signal line of other on-site equipment. There is a possibility that it will be mistakenly identified as the signal line of one machine. For example, since the conversion control to the localization side and the conversion control to the reverse side with respect to the tumbler are not performed at the same time, when the specified first control line and second control line simultaneously have output bit values. Can cancel the identification of the signal line by judging that it is an error. Similarly, regarding the display information, since the conversion state of the turning machine is either the localization side or the reverse side and cannot occur at the same time, the specified first display line and second display line are If the bit value with output is reached at the same time, the identification of the signal line can be canceled by judging that it is an error.

A seventh invention is a determination device capable of acquiring the conversion time output from the field control terminal of any one of the first to sixth inventions.
A storage unit that stores a plurality of the conversion times, an evaluation standard setting means that sets an evaluation standard based on the plurality of stored conversion times, and an evaluation standard setting means.
Based on the evaluation criteria, a determination means for determining whether or not the new conversion time when the turning machine performs a new conversion operation is abnormal, and
It is a determination device provided with.

According to the seventh invention, a plurality of conversion times of the tumbling machine acquired from the field control terminal are stored, and the tumbling machine newly performs a conversion operation based on the plurality of conversion times. It is possible to determine whether or not the new conversion time at that time is abnormal. If it is the same rolling machine, the conversion time will be almost the same, so set an evaluation standard for each rolling machine and check whether the conversion operation of the rolling machine is abnormal. Can be determined.

Application example of field control terminal. Explanatory drawing of input / output information of site control terminal. An example of changes in input / output information related to a tumbling machine. A specific explanatory diagram of a signal line to which input / output information about a tumbler is assigned. An example of determining the state of a rolling machine. Functional configuration diagram of the site control terminal. An example of an assignment table. Functional configuration diagram of the judgment device.

Hereinafter, an example of a preferred embodiment of the present invention will be described with reference to the drawings. It should be noted that the embodiments described below do not limit the present invention, and the embodiments to which the present invention can be applied are not limited to the following embodiments. Further, in the description of the drawings, the same elements are designated by the same reference numerals.

[System configuration]
FIG. 1 is an application example of the field control terminal of the present embodiment. As shown in FIG. 1, the field control terminal 30 of the present embodiment is a device that constitutes an electronic interlocking device together with the interlocking logic unit 20, and can communicate data with the interlocking logic unit 20 via a transmission line. It is connected. The control range of the electronic interlocking device is, for example, the premises of one station. The interlocking logic unit 20 is installed in the equipment room of the target station, and the site control terminal 30 is located in the equipment room of the target station or in the vicinity of the site equipment 40 such as the turning machine 41, the traffic light 42, and the track circuit 43 in the premises. Will be installed.

Although FIG. 1 shows an example of one interlocking logic unit 20 and one on-site control terminal 30, the number of on-site control terminals 30 constituting the electronic interlocking device is not limited to one, but may be a plurality of. There may be. For example, a configuration in which site control terminals 30 are installed in a plurality of ranges obtained by dividing the premises of one station, or site control terminals 30 are installed in each station with the entire line section including a plurality of stations as a control range, and an interlocking logic unit 20 is set. It is conceivable to install it at a base station or central command center in the line section.

The interlocking logic unit 20 performs interlocking processing on the target station by using the route control information from a higher-level device such as PRC (Programmed Route Control), and controls the control information of the on-site equipment 40 according to the result of the interlocking processing. Output to terminal 30.

The field control terminal 30 has an interface function between the interlocking logic unit 20 and the field equipment 40, outputs control information from the interlocking logic unit 20 to the field equipment 40 for control, and captures the operating state of the field equipment 40. , Is output to the interlocking logic unit 20 as display information.

Further, the determination device 10 is connected to the interlocking logic unit 20. The determination device 10 is installed in a central command center, a signal equipment room, or the like, acquires a conversion time related to a conversion operation of the turning machine 41 via an interlocking logic unit 20, and rolls based on the acquired conversion time. A state determination such as whether or not the conversion operation of the machine 41 is abnormal is performed. Further, although not shown, the determination device 10 is connected to the interlocking logic unit 20 of the electronic interlocking device installed at each station of the entire line section, and the rolling machine 41 installed at each station of the entire line section. The state of the conversion operation is determined for each.

FIG. 2 is a diagram showing input / output information of the site control terminal 30 interposed between the interlocking logic unit 20 and the site device 40. The field control terminal 30 has an interlocking logic unit side terminal 32 to which the interlocking logic unit 20 is connected, and a field equipment side terminal 34 to which the field equipment 40 is connected. The communication between the field control terminal 30 and the interlocking logic unit 20 is serial communication, and the interlocking logic unit side terminal 32 has an input terminal and an output terminal to which the serial signal line of the interlocking logic unit 20 is connected. Further, the communication between the field control terminal 30 and the field device 40 is parallel communication, and the field device side terminal 34 has a plurality of output terminals and input terminals to which parallel signal lines of the plurality of field devices 40 are connected. ..

Display information input from each of the field equipment 40 and control information output to each of the field equipment 40 are assigned to each of the plurality of input terminals and output terminals which are the field equipment side terminals 34. Specifically, on the signal line connected to the input terminal of the field equipment side terminal 34, display information (localization display) indicating that the conversion state of the turning machine 41 is on the localization side and on the reverse side A signal line to which display information (inversion display) indicating the existence is assigned (hereinafter, collectively referred to as “conversion display line”) is included. To the signal line connected to the output terminal, an instruction signal for conversion control to the localization side (localization control) and an instruction signal for conversion control to the reverse side (reverse position control) are assigned to the turning machine 41. Signal lines (hereinafter collectively referred to as "conversion control lines") are included. Further, there are a signal line to which the lighting control condition for the signal 42 is assigned as output information to the other field equipment 40, a signal line to which the current state of the track circuit 43 is assigned as input information, and the like.

The field control terminal 30 converts the control information, which is a serial signal input from the interlocking logic unit side terminal 32, into a parallel signal and outputs it from the corresponding output terminal of the field equipment side terminal 34, and inputs the field equipment side terminal 34. Serial-parallel signal conversion is performed, such as converting the display information which is a parallel signal input from the terminal into a serial signal and outputting it from the interlocking logic unit side terminal 32. Further, the field control terminal 30 of the present embodiment calculates the conversion time related to the conversion operation of the turning machine 41 from the bit change of the parallel signal line connected to the field equipment side terminal 34, as will be described in detail later. Then, the calculated conversion time is included in the display information and output to the interlocking logic unit 20. Generally, the execution cycle of serial communication performed by the interlocking logic unit 20 with the field control terminal 30 and the determination device 10 coincides with the processing cycle of the interlocking logic unit 20, and the parallel communication performed by the field control terminal 30 with the field equipment 40. The communication execution cycle coincides with the processing cycle of the field control terminal 30. Unlike the former cycle and the latter cycle, the latter is shorter. For example, the execution cycle of the former serial communication is 300 milliseconds, and the execution cycle of the latter parallel communication is 50 milliseconds. Therefore, by calculating the conversion time by the on-site control terminal 30 having a short processing cycle, it is possible to calculate the conversion time more accurately as compared with the case where the interlocking logic unit 20 and the determination device 10 calculate the conversion time. It becomes.

The interlocking logic unit 20 outputs control information for localization control and reversal control, which is control information for the turning machine 41, which is the on-site equipment 40, to the on-site control terminal 30 according to the result of the interlocking processing. Further, the control information including the output information for the field equipment 40 other than the turning machine 41 is output to the field control terminal 30. The display information input from the field control terminal 30 to the interlocking logic unit 20 includes the localization display and the reverse position display, which are the display information of the turning machine 41, as well as the field equipment 40 other than the turning machine 41. In addition to the input information, the conversion time of the turning machine 41 calculated by the site control terminal 30 is included. The interlocking logic unit 20 includes all the display information including the localization display and the reverse position display of the turning machine 41 input from the field control terminal 30, the conversion time, and the turning machine 41 output to the field control terminal 30. All the information of the control information including the conversion control (localization control and reverse position control) is output to the determination device 10. The determination device 10 is included in the display information from the localization display and the reverse position display of the turning machine 41 input from the interlocking logic unit 20 and the conversion control (localization control and the reverse position control) for the turning machine 41. The turning machine 41 corresponding to the turning time and the turning direction thereof are determined. Then, it is associated with the determined identification information (turning machine ID, etc.) of the turning machine 41 and the conversion direction, and it is determined whether or not the conversion operation of the turning machine 41 is abnormal based on the conversion time.

[Specify signal line]
In the field control terminal 30, display information and control information are assigned to the signal line connected to the field device side terminal 34 (hereinafter referred to as "assignment of the field control terminal 30"), and the signal line is mounted on the field control terminal 30. Serialization between the interlocking logic unit 20 and the field equipment 40 in order to freely replace the control boards (for example, the control boards of a plurality of field control terminals 30 are exchanged with each other or replaced with spare boards). -When performing parallel signal conversion, the assignment of input / output information of the terminal 34 on the field equipment side is not stored. The interlocking logic unit 20 grasps and manages the assignment (assignment) of the input / output information of the on-site device side terminal 34 of the site control terminal 30, and the interlocking logic unit 20 assigns to each site device 40 according to this assignment (assignment). The field control terminal 30 generates serial data stored in the order of each output terminal of the field equipment side terminal 34 of the field control terminal 30 and outputs the control information to the field control terminal 30, and the field control terminal 30 sequentially outputs the control information from the interlocking logic unit 20. It is converted in parallel and output to each output terminal of the field equipment side terminal 34. Further, the field control terminal 30 generates display information by serially converting the input results in the terminal order of each input terminal of the field equipment side terminal 34 and outputs the display information to the interlocking logic unit 20, and the interlocking logic unit 20 controls the site. The display information of each field device 40 is extracted from the serial data from the terminal 30.

The field control terminal 30 of the present embodiment does not store the assignment of its own machine, but identifies the signal line (assignment) to which the input / output information for the turning machine 41 is assigned from the bit change of the signal line. The conversion time of the turning machine 41 can be calculated.

FIG. 3 is a diagram showing an example of input / output information of the field control terminal 30 with respect to the turning machine 41. In FIG. 3, with the horizontal direction as the time axis, in order from the top, as output information for the turning machine 41, localization control which is conversion control to the localization side and reversal control which is conversion control to the reversal side And, as the input information from the turning machine 41, the localization display which is the display information indicating that the conversion state is the localization side, and the inversion display which is the display information indicating that the conversion state is the inversion side. And. Further, for reference, the operation of the turning machine 41 according to the conversion control is shown at the bottom. In the present embodiment, the input / output information has an H level indicating that there is an output and an L level indicating that there is no output.

First, as an initial state, the conversion state of the turning machine 41 is on the opposite side. The localization control and the reverse position control, which are the conversion controls output from the on-site control terminal 30 to the turning machine 41, are both at the L level, and the display input from the on-site control terminal 41 to the on-site control terminal 30. As for the information, the localization display is the L level and the inversion display is the H level.

From this state, first, at timing t _1, localization control from field control terminal 30 is output to the point lock unit 41 is changed from L level to H level. That is, an instruction signal for conversion control to the localization side is output to the turning machine 41. Then, the turning machine 41 starts the conversion operation from the reverse side to the localization side. When the tumbling machine 41 starts the conversion operation, the reversal display input from the tumbling machine 41 to the site control terminal 30 changes from the H level to the L level. _{The timing t 2} at which the inversion display changes from the H level to the L level is a timing slightly delayed from the timing _{t 1.} The time interval ΔT ₁₂ of the timings t ₁ and t ₂ is caused by the operating time of the relay of the rotary machine 41 (for example, about 10 milliseconds), and the signal line connected to the field equipment side terminal 34 by the field control terminal 30. The time is in units of the bit value acquisition cycle (parallel communication execution cycle, for example, 50 milliseconds).

Then, when the conversion operation of the tumbling machine 41 to the localization side is completed, the localization display input from the tumbling machine 41 to the site control terminal 30 changes from the L level to the H level. The timing of this localization display is changed to H level and t _3. The time interval ΔT ₁₃ from the timing t ₁ to the timing t ₃ is included in the conversion equivalent time range (for example, between 5 seconds and 7 seconds) determined for each type of the turning machine 41. It should be noted that the change of the localization display to the H level is output from the site control terminal 30 to the interlocking logic unit 20, and the interlocking logic unit 20 sets the localization control to the L level, so that the conversion control to the localization side is completed. However, in the case of conversion control by a single lever operation for forcibly continuing the localization control, the localization control remains at the H level until the operation is completed.

Then, the time from the timing t _{1 when the localization control changes to the H level to the timing t 3} when the localization display changes to the H level is the conversion time required for the turning machine 41 to perform the conversion operation from the reverse position to the localization. , And.

The same applies to the case where the rolling machine 41 subsequently shifts from the localization to the reverse position. That is, at the timing t _5, the anti-position control from the field control terminal 30 is output to the point lock unit 41 is changed from L level to H level. That is, an instruction signal for conversion control to the opposite side is output to the turning machine 41. Then, the turning machine 41 starts the conversion operation from the localization side to the opposite side. When the tumbling machine 41 starts the conversion operation, the localization display input from the tumbling machine 41 to the site control terminal 30 changes from the H level to the L level. _{The timing t 6} at which the localization display changes from the H level to the L level is a timing slightly delayed from the timing _{t 5.} The time interval ΔT ₅₆ of the timings t ₅ and t ₆ was connected to the on-site equipment side terminal by the on-site control terminal 30 due to the operation time of the relay of the turning machine 41 as well as the conversion operation to the localization side. The time is in units of the bit value capture cycle of the signal line.

Then, when the conversion operation of the turning machine 41 to the reverse side is completed, the reverse position display input from the turning machine 41 to the site control terminal 30 changes from the L level to the H level. The timing of the anti-position display is changed to H level and t _7. The time interval ΔT ₅₇ from the timing t ₅ to the timing t ₇ is included in the conversion equivalent time range (for example, between 5 seconds and 7 seconds) determined for each type of the turning machine 41. The fact that the reversal display has changed to the H level is output from the site control terminal 30 to the interlocking logic unit 20, and the interlocking logic unit 20 sets the reversal control to the L level to control the conversion to the reversal side. finish. However, in the case of conversion control by a single lever operation for forcibly continuing the reversal control, the reversal control remains at the H level until the operation is completed.

Then, the time from the timing t ₅ when the inversion control changed to the H level to the timing t ₇ when the inversion display changed to the H level required the turning machine 41 to perform the conversion operation from the localization to the inversion. It will be a conversion time.

In this way, the input / output information (control information, display information) for the tumbling machine 41 changes during the conversion operation of the tumbling machine 41. From this change in the input / output information, as shown in FIG. 4, it is possible to specify the signal line (assignment) to which the input / output information is assigned to the tumble machine 41. However, the field control terminal 30 cannot specify whether the conversion direction of the turning machine 41 is the localization side or the reverse side. However, since the turning machine 41 converts so that the conversion directions alternate, it is possible to distinguish between the two conversion directions as one side and the other side.

FIG. 4 shows a specific condition of the signal line based on the input / output information at the time of the conversion operation of the turning machine shown in FIG. Further, the conversion direction is such that the localization side is one side and the opposite side is the other side. As shown in FIG. 4 (1), as a specific condition when the conversion direction is one side (corresponding to the localization side in FIG. 3), the bit value of each signal line connected to the field equipment side terminal 34 is The three signal lines that have changed at the next timing are detected. That is, the first signal line in which the bit value changes to the H level which is the bit value with output, and the timing t _{1 which is the first change timing in which the bit value of the first signal line changes to the H level which is the bit value with output.} a second signal line bit value is changed to the L level is output without bit value within a predetermined allowable time range ΔTt from the bit values from the timing t ₁ is a first change timing within a predetermined conversion time corresponding range ΔTf Detects the combination of the first to third signal lines with the third signal line that has changed to the H level, which is the bit value with output.

Then, the first signal line is a signal line to which conversion control to one side, which is the first control line, is assigned, and the second signal line is assigned display information to the other side, which is the second display line. As a signal line, the third signal line is specified as a signal line to which display information to one side of the first display line is assigned.

Here, the conversion equivalent time range ΔTf is a time range corresponding to the conversion time of the turning machine 41 (corresponding to the time interval ΔT ₁₃ in FIG. 3), and is, for example, a time range of about 5 to 7 seconds. _{The permissible time range ΔTt is a time range (corresponding to the time interval ΔT 12} in FIG. 3) corresponding to the time delay between the output of the conversion control and the input of the display information, and is, for example, in a time range of about 50 to 100 milliseconds. is there. Both are arbitrarily set according to the model of the turning machine 41 and the like.

In this way, after specifying the signal line related to the conversion operation to one side, the signal line related to the conversion operation to the other side, which is the next conversion operation, can be specified as follows. As shown in FIG. 4 (2), as a specific condition when the conversion direction is the other side (corresponding to the reverse side in FIG. 3), the bit value of each signal line connected to the field equipment side terminal 34 Detects three signal lines that have changed at the next timing. That is the fourth signal line, a bit value there output bit value to the first change timing timing t ₁ from a predetermined conversion corresponding time range ΔTf is that changes to the H level is the bit value there output bit value changes to H level, and, second change timing at which the timing t ₅ the allowable time range ΔTt bit value without output bit value in which changes to the H level is the bit value there output bit value of the fourth signal line The third signal line changed to the L level, _{and the bit value changed from the timing t 1} which is the first change timing to the L level which is the bit value without output within the allowable time range ΔTt, and the second change timing detecting the second to the combination of the fourth signal line and the second signal line bit value to the timing t ₅ from the predetermined conversion corresponding time range ΔTf is changed to the H level is the bit value there output is.

Then, the fourth signal line is a signal line to which conversion control to the other side, which is the second control line, is assigned, and the second signal line is assigned display information to the other side, which is the second display line. As a signal line, the third signal line is specified as a signal line to which display information to one side of the first display line is assigned. The first display line and the second display line specified here should be the same as the first display line and the second display line specified as the signal lines related to the conversion operation to one side described above.

When the signal line related to the conversion operation of the tumbler 41 is specified in this way, the time from the bit change of the first control line to the bit change of the first display line is set as the conversion time required for the conversion operation to one side. The time from the bit change of the second control line to the bit change of the second display line can be calculated as the conversion time required for the conversion operation to the other side.

However, there is a possibility that the identification of the signal line regarding the turning machine 41 is incorrect. That is, the signal lines of a plurality of field devices 40 including the turning machine 41 are connected in parallel to the field device side terminal 34, and the field control terminal 30 does not grasp the allocation of input / output information. .. Therefore, depending on the change timing of the input / output information for other field equipment such as a traffic light and a track circuit, the signal line to which the input / output information of these other field equipment is assigned may be mistaken for the signal line for the tumbler 41. There is a possibility of identifying it. In order to correct this error, after specifying the signal line related to the turning machine 41, if it is determined that the error is made, the specification is canceled.

Specifically, since the conversion control to the localization side and the conversion control to the reverse side with respect to the turning machine 41 are not performed at the same time, the conversion control to one side, which is the first control line, is performed. When both the assigned signal line and the signal line to which the conversion control to the other side, which is the second control line, is assigned reaches the H level, which is the bit value with output, it is related to the switch 41. It is determined that the signal line identification is incorrect. Further, as the display information indicating the conversion state of the turning machine 41, the localization display indicating that the rotation machine 41 is on the localization side and the reversal display on the reversal side are not input at the same time. Both the signal line to which the display information to one side of the line is assigned and the signal line to which the display information to the other side of the second display line is assigned have the H level which is the bit value with output. In this case, it is determined that the identification of the signal line regarding the turning machine 41 is incorrect.

[Judgment of the state of the rolling machine]
The determination device 10 determines a state such as whether or not the conversion operation of the tumbling machine 41 is abnormal based on the conversion time of the tumbling machine 41 calculated by the site control terminal 30. In the state determination of the turning machine 41 in the present embodiment, it is assumed that the data of the past conversion time is accumulated and stored in advance for each turning machine 41. Then, a new conversion is performed depending on whether or not the data of the conversion time (new conversion time) when a certain turning machine 41 performs a new conversion operation satisfies a predetermined evaluation standard based on the data of the past conversion time. Determine if the time is abnormal.

Specifically, as shown in FIG. 5, it is normal by the state determination from the data of the conversion time related to the same turning machine as the new conversion time and the data of the past conversion time having the same conversion direction. The data of the predetermined number of conversion times within the latest predetermined number of days determined to be determined is extracted. Then, the average value μlog (T) of the logarithmic log (T) of each extracted conversion time T (T _{1 to} T _{k) and the standard deviation σlog (T) are obtained.} Next, the deviation value of the logarithmic log (T _{k + 1 ) of the new conversion time T k + 1} is obtained by using the mean value μlog (T) and the standard deviation σlog (T). Then, by comparing this deviation value with a predetermined conversion time threshold value, it is determined whether or not the _{new conversion time T k + 1 is abnormal.}

The conversion time threshold is an evaluation standard for determining whether or not the conversion time is abnormal, and is set as follows. That is, the upper limit value and the lower limit value of the conversion time threshold value centered on the average value μlog (T) obtained from the past conversion time T (T _{1 to} T _{k) are obtained.} Then, if the deviation value for the new conversion time T _{k + 1} is outside the range of the conversion time threshold value, it is determined to be abnormal, and if it is within the range, it is determined to be normal.

[Functional configuration]
(A) Site control terminal FIG. 6 is a functional configuration diagram of the site control terminal 30. As shown in FIG. 6, the field control terminal 30 includes a signal conversion unit 302, a specific unit 304, and a conversion time calculation unit 306, and stores the assignment table 310.

The signal conversion unit 302 converts the control information, which is a serial signal input from the interlocking logic unit 20, into a parallel signal, outputs the control information to the field equipment 40, and is a parallel signal input from the field equipment 40. Serial-parallel signal conversion is performed, such as converting the display information into a serial signal and outputting it to the interlocking logic unit 20.

The identification unit 304 includes a signal line (conversion control line) to which a conversion control instruction signal for the switch 41 is assigned based on the bit change timing of each signal line connected to the field equipment side terminal 34. The signal line (conversion display line) to which the display information of the tumbling machine 41 is assigned is specified. Specifically, as the conversion control line, the first control line to which the conversion control instruction signal on one side of the localization side and the reverse side in the conversion direction is assigned, and the conversion control instruction signal on the other side are assigned. The second control line is specified, and as the conversion display line, the first display line to which the display information indicating that the conversion state is on one side is assigned and the display information indicating that the conversion state is on the other side are assigned. The second display line is specified (see FIGS. 3 and 4).

The signal line specified by the specific unit 304 is stored as the assignment table 310. FIG. 7 shows an example of the assignment table 310. As shown in FIG. 7, the assignment table 310 is a data table for storing assignments (assignments) of input / output information regarding the switch 41 with respect to the signal line, and is a localization side and a reverse side, which are conversion directions. For each of one side and the other side, the terminal numbers (terminal positions) of the terminals on the field equipment side to which the signal lines to which the conversion control and the display information are assigned are connected are stored in association with each other.

Further, the specific unit 304 monitors the bit value of the signal line, and is assigned a conversion control instruction signal specified as a conversion control line, which is one of the localization side and the reverse side in the conversion direction. When one control line and the second control line to which the conversion control instruction signal on the other side is assigned simultaneously reach the H level, which is the bit value with output, or the conversion state specified as the conversion display line is The first display line to which the display information indicating that it is on one side is assigned and the second display line to which the display information indicating that the conversion state is on the other side are assigned are H, which are bit values with output at the same time. When the level is reached, the conversion control line and conversion display line are canceled. That is, the contents of the assignment table 310 are cleared.

The conversion time calculation unit 306 calculates the conversion time related to the conversion operation of the turning machine 41 based on the bit changes of the conversion control line and the conversion display line. Specifically, with reference to the assignment table 310, the conversion state is changed from the bit change of the first control line to which the conversion control instruction signal of one of the localization side and the reverse side of the conversion direction is assigned. The time until the bit change of the first display line to which the display information indicating that it is on the side is assigned is calculated as the conversion time related to the conversion operation to one side, and the conversion control instruction signal on the other side is assigned. The time from the bit change of the second control line to the bit change of the second display line to which the display information indicating that the conversion state is on the other side is assigned is used as the conversion time related to the conversion operation to the other side. Calculate (see FIG. 3). Then, the calculated conversion time information is output to the signal conversion unit 302, included in the display information, and output to the external interlocking logic unit 20.

(B) Judgment device FIG. 8 is a functional configuration diagram of the determination device 10. As shown in FIG. 8, the determination device 10 includes an evaluation standard setting unit 102 and a determination unit 104, and stores the turning machine data 110.

The evaluation standard setting unit 102 sets the evaluation standard based on a plurality of conversion times stored as the turning machine data 110. Specifically, it is the latest predetermined conversion time data related to the turning machine 41 that is the same as the new conversion time, and is determined to be normal by the state determination from the data of the past conversion time having the same conversion direction. Extract a predetermined number of conversion time data within the number of days. Then, the average value calculated to Myulog (T) of the extracted each converted time _{T (T} 1 ~T _k) of the log-log (T), the upper limit of the switching time threshold around this average value Myulog a (T) and a lower limit The value is calculated and used as an evaluation standard (see FIG. 5).

The determination unit 104 determines whether or not the new conversion time when the turning machine 41 performs a new conversion operation is abnormal based on the evaluation standard set by the evaluation standard setting unit 102. That is, the average value μlog logarithm log (T) criteria setting unit 102 each switching times were extracted for setting criteria _{T (T 1 ~T k) (} T), and the standard deviation σlog (T) Is obtained, and the deviation value of the logarithmic log (T _{k + 1 ) of the new conversion time T k + 1} is obtained by using the mean value μlog (T) and the standard deviation σlog (T). Then, if the deviation value for the new conversion time T _{k + 1} is outside the range of the conversion time threshold set as the evaluation standard by the evaluation standard setting unit 102, it is determined to be abnormal, and if it is within the range, it is determined to be normal ( (See FIG. 5).

The tumbling machine data 110 stores a plurality of conversion time data for each tumbling machine 41 to be determined, in association with the tumbling machine ID that identifies the tumbling machine 41. The conversion time data includes the conversion time related to one conversion operation, the measurement date and time, the conversion direction, and the result of the state determination. The turning machine data 110 stores and stores data acquired from the interlocking logic unit 20.

[Action effect]
As described above, the field control terminal 30 of the present embodiment is a signal line even if input / output signals are not assigned to each field device 40 of the parallel signal lines connected to the field device side terminals 34 from the outside. Based on the bit change timing, it is possible to specify the signal line to which the input / output signals for the turning machine 41 are assigned and calculate the conversion time of the turning machine. The conversion time calculated by the site control terminal 30 is output to the determination device 10 via the external interlocking logic unit 20 together with the conversion direction of the corresponding turning machine 41, and the determination device 10 is output from the site control terminal 30. The turning machine 41 and the turning direction corresponding to the input conversion time are determined, and the state of whether or not the switching operation of the corresponding turning machine 41 is abnormal is determined based on the conversion time.

The conversion time is one of the information that can be used as a criterion for determining whether or not the conversion operation of the turning machine 41 is abnormal. Therefore, according to the present embodiment, a completely new technique for acquiring information that can be used as a criterion for determining whether or not the conversion operation of the turning machine 41 is abnormal is realized without providing a new measuring terminal. be able to. Further, since the on-site control terminal 30 outputs the data of the conversion time, the amount of the data is extremely small as compared with the case of transmitting the conventional measurement data such as the conversion torque data and the operating current. Become.

It should be noted that the applicable embodiments of the present invention are not limited to the above-described embodiments, and of course, they can be appropriately changed without departing from the spirit of the present invention.

For example, the control board mounted on the site control terminal 30 may be replaced, and the control board stores input / output information assignments (assignments) relating to another site control terminal 30 mounted before the replacement. May have been. Since this assignment is different from the assignment of the site control terminal 30 mounted after the replacement, inconvenience occurs in the calculation of the conversion time. Therefore, the input / output information allocation may be erased (reset) by the operation of the determination device 10.

10 ... Judgment device 102 ... Evaluation standard setting unit 104 ... Judgment unit 110 ... Rotating machine data 20 ... Interlocking logic unit 30 ... Site control terminal 32 ... Interlocking logic unit side terminal 34 ... Field equipment side terminal 302 ... Signal conversion unit 304 … Specific unit 306… Conversion time calculation unit 310… Assignment table 40… Field equipment 41… Rolling machine 42… Traffic light 43… Track circuit

Claims (7)

A parallel signal line of one or more field equipment including at least a turning machine is connected to the field equipment side terminal, an interlocking logic unit is connected to the interlocking logic unit side terminal, and the interlocking logic unit and the field equipment are connected. It is a field control terminal that performs signal conversion between
A signal line (hereinafter referred to as "conversion control line") to which a conversion control instruction signal for the switch is assigned based on the change timing of bits of each signal line connected to the field equipment side terminal, and the above. Specific means for identifying the signal line to which the display information of the turning machine is assigned (hereinafter referred to as "conversion display line"), and
A calculation means for calculating the conversion time related to the conversion operation of the turning machine based on the bit change of the conversion control line and the conversion display line.
An output control means for outputting the calculated information indicating the conversion time to the outside,
On-site control terminal equipped with. The specific means
As the conversion control line, a first control line to which an instruction signal for conversion control on one side of the localization side and the reverse side in the conversion direction is assigned, and a second control line to which an instruction signal for conversion control on the other side is assigned. Identify the control line and
As the conversion display line, a first display line to which display information indicating that the conversion state is on one side is assigned and a second display line to which display information indicating that the conversion state is on the other side are assigned are specified. To do
The field control terminal according to claim 1. The calculation means calculates the time from the bit change of the first control line to the bit change of the first display line, or the time from the bit change of the second control line to the bit change of the second display line. Calculated as the conversion time,
The field control terminal according to claim 2. The specific means
Of the signal lines connected to the field equipment side terminals, the first signal line in which the bit value changes to the output bit value and the first change in which the bit value of the first signal line changes to the output bit value. The second signal line in which the bit value changes from the timing to the bit value without output within a predetermined allowable time range, and the second signal line in which the bit value changes to the bit value with output within the predetermined conversion equivalent time range from the first change timing. The combination of the first to third signal lines with the three signal lines is detected, the first signal line is used as the first control line, the second signal line is used as the second display line, and the third signal line is used as the third signal line. Specified as the first display line,
The field control terminal according to claim 2 or 3. The specific means further
Of each signal line connected to the field equipment side terminal, the fourth signal line whose bit value has changed to the bit value with output is detected.
As the third signal line, the bit value is changed to the output bit value within the conversion equivalent time range from the first change timing, and the bit value of the fourth signal line is changed to the output bit value. 2 The third signal line in which the bit value changes to the no output bit value within the permissible time range from the change timing is detected.
As the second signal line, the bit value changes from the first change timing to the no output bit value within the permissible time range, and the bit value is output within the conversion equivalent time range from the second change timing. The second signal line changed to a bit value is detected,
The fourth signal line is specified as the second control line.
The field control terminal according to claim 4. The specific means
When the specified first control line and the second control line simultaneously have output bit values, or when the specified first display line and second display line simultaneously have output bit values, the said It has a specific canceling means for canceling the identification of the conversion control line and the identification of the conversion display line.
The field control terminal according to any one of claims 2 to 5. A determination device capable of acquiring the conversion time output from the on-site control terminal according to any one of claims 1 to 6.
A storage unit that stores a plurality of the conversion times, an evaluation standard setting means that sets an evaluation standard based on the plurality of stored conversion times, and an evaluation standard setting means.
Based on the evaluation criteria, a determination means for determining whether or not the new conversion time when the turning machine performs a new conversion operation is abnormal, and
Judgment device including.

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