JP7212462B2 - Railway wayside equipment monitoring system and central equipment - Google Patents

Description

The present invention relates to a railway trackside facility monitoring system and the like.

In order to realize safe transportation in railways, various methods have been developed to monitor the status of railway equipment such as point machines, track circuits, and level crossings, and to quickly detect abnormalities and their signs. . For example, Patent Literature 1 discloses a method of comparing switching torque data related to one switching operation with stored past switching torque data as status monitoring of a point machine, which is an example of railway facility. discloses a technique for determining whether or not there is an abnormality in a point machine.

JP 2015-9651 A

Along with the development of information communication technology, as a technology for monitoring the condition of such railway lineside facilities, measuring instruments for measuring predetermined measurement items are attached to the railway lineside facilities to be monitored, and the measured data by these measuring instruments can be obtained remotely. A monitoring method has been developed and is being put into practical use. However, in order to ensure the reliability of measurement data, it is necessary to calibrate the measuring instruments periodically.

If the number of railway lineside facilities to be monitored is small, the problem will be small. Therefore, it is expected that it will take time and effort to manage each measuring instrument so that the calibration period does not expire. In addition, since the calibration of the measuring instruments itself is carried out at the factory of the specified manufacturer, it is necessary to calibrate the measuring instruments during the hours when maintenance work is possible (mainly at night when trains are not running) at the site of railway facilities. It will be a task to replace it with another measuring instrument that has already been used. Therefore, it is necessary to adjust the maintenance schedule for replacement work of measuring instruments and to prepare calibrated measuring instruments before the calibration deadline. The task of managing the calibration of many measuring instruments requires a great deal of time and effort.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to provide a technique for accurately realizing management related to calibration when monitoring the condition of railway lineside facilities based on the measurement data of measuring instruments. It is to be.

A first invention for solving the above problems is
A measuring instrument having calibration timing information (eg, "calibration completion date" in the embodiment) for measuring a predetermined measurement item for railroad facility (eg, point machine 50 in FIG. 1); a transmitter that transmits measurement data in which the result of measurement by the device, the measurement date and time, and the calibration time information are associated;
a storage unit for storing the measurement data received from the measurement terminal; and a predetermined inspection on a new measurement result to be inspected using the past measurement results of the same railroad facility included in the measurement data as reference data. and a replacement notification unit that notifies when to replace the measuring device and/or the measuring terminal based on the calibration time information included in the measurement data;
is a railway trackside facility monitoring system configured by connecting to communication.

Also, as another invention,
The measuring terminal of a railway lineside facility monitoring system configured by connecting a measuring terminal and a central device for communication,
A measuring instrument with calibration timing information for measuring predetermined measurement items for railway equipment,
a transmitter that transmits measurement data in which the measurement result by the measuring device, the measurement date and time, and the calibration time information are associated;
with
The central unit includes a storage unit for storing the measurement data received from the measurement terminal, and a new measurement result to be inspected using the past measurement result related to the same railroad facility included in the measurement data as reference data. and a replacement notification unit that notifies when to replace the measuring device and/or the measuring terminal based on the calibration time information included in the measurement data,
A measurement terminal may be configured.

As yet another invention,
The central device of a railway lineside facility monitoring system configured by connecting a measurement terminal and a central device for communication,
The measurement terminal stores a measuring instrument having calibration time information for measuring predetermined measurement items for railway facilities, and measurement data in which the measurement results of the measuring instrument, the measurement date and time, and the calibration time information are associated with each other. a transmitter for transmitting;
a storage unit that stores the measurement data received from the measurement terminal;
an inspection unit that performs a predetermined inspection on a new measurement result to be inspected using past measurement results related to the same railroad facility included in the measurement data as reference data;
a replacement notification unit that notifies when to replace the measuring device and/or the measuring terminal based on the calibration time information included in the measurement data;
You may constitute the central apparatus provided with.

According to the first invention and the like, the time to replace the measuring device and/or the measuring terminal is notified based on the calibration time information included in the measurement data received from the measuring terminal. As a result, the replacement of the measuring instrument and/or the measuring terminal whose calibration deadline is approaching can be urged, and the expiration of the calibration deadline can be prevented, so that calibration-related management can be implemented accurately.

A second invention is the railway trackside facility monitoring system of the first invention,
The central device is
an output unit that outputs each measurement result included in the measurement data stored in the storage unit in a list in association with calibration time information;
This is a railway line facility monitoring system.

According to the second invention, each measurement result can be associated with calibration time information and output in a list form, so that the management of calibration is clarified and the reliability of each measurement result is ensured. be able to.

A third invention is the railway trackside facility monitoring system of the first or second invention,
The central device is
When the calibration time information of the past measurement result used as the reference data and the calibration time information of the new measurement result to be inspected do not satisfy a predetermined same calibration condition in common, it is determined as a calibration transition period and a transition period process is performed. further comprising a transition processing unit that performs
This is a railway line facility monitoring system.

According to the third aspect of the present invention, when the calibration time information of the past measurement result used as the reference data and the calibration time information of the new measurement result to be inspected do not satisfy the same predetermined calibration condition in common, the calibration transient It is determined as a period, and transitional period processing is performed. For example, when the measuring terminal is replaced, the calibration time information of the measuring terminal is different before and after the replacement, so if the measurement results before and after the replacement are used as reference data, the same calibration conditions are not satisfied. In such cases, it is possible to monitor the status of railway lineside facilities by taking into account the discontinuity of measurement results due to the replacement of measuring instruments during calibration by performing a predetermined transitional process during the calibration transitional period. becomes.

A fourth invention is a railway trackside equipment monitoring system according to the third invention,
The transitional period processing unit performs a process of suppressing the inspection by the inspection unit as the transitional period process,
This is a railway line facility monitoring system.

According to the fourth invention, processing for suppressing inspection is performed as the transitional processing. With calibrated measuring instruments, a certain range of measurement error (for example, about ± several percent) is allowed for measurement results, and different measuring instruments give different measurement results, so when the same calibration conditions are not met However, it is inevitable that the reliability of test results will decrease. In such a case, the inspection itself can be avoided.

A fifth invention is a railway trackside facility monitoring system according to any one of the first to fourth inventions,
The inspection unit selects a past measurement result whose calibration time information is the same as the new measurement result to be inspected by going back from the new measurement result and using it as the reference data.
This is a railway line facility monitoring system.

For example, when the measuring terminal is replaced, the measurement result may change discontinuously before and after the replacement because the calibration time information of the measuring terminal is different before and after the replacement. Therefore, in the fifth aspect of the present invention, a predetermined inspection is performed using a past measurement result whose calibration time information is the same as that of a new measurement result to be inspected as reference data. This eliminates the need for inspections using different measurement results from measuring instruments before and after replacement, making it possible to monitor the status of railway lineside facilities while taking into consideration the discontinuity of measurement results due to the replacement of measuring instruments during calibration. Become.

A sixth invention is the railway trackside facility monitoring system according to any one of the first to fifth inventions,
The measurement terminal further comprises a non-volatile memory that stores the calibration time information set by a predetermined setting device connected when calibrating the measuring instrument,
This is a railway line facility monitoring system.

According to the sixth invention, the calibration time information of the measuring device is stored in the non-volatile memory of the measuring terminal by a predetermined setting device connected when calibrating the measuring device. As a result, for example, it is possible to prevent unintended rewriting of the calibration measurement information after shipment of the measurement terminal, and improve reliability.

1 is a schematic configuration diagram of a railway line facility monitoring system; FIG. Explanatory drawing of operation data. Explanatory drawing of preparation of average motion data. Explanatory drawing of the test|inspection regarding operation data. The functional block diagram of a central apparatus. Data configuration example of cumulative motion DB. A data configuration example of an inspection DB. 4 is a flow chart of a railway line facility monitoring process;

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 a schematic configuration diagram of a railway trackside facility monitoring system 1 according to the present embodiment. According to FIG. 1, the railway lineside facility monitoring system 1 includes a central device 10 and a plurality of measurement terminals 30 installed in association with each point machine 50, which is an example of the railway lineside facility. and configured to be communicatively connected via

The point machine 50 is an electric point machine that uses an electric motor 52 as a power source. 54. In the point machine 50, the rotational output of the electric motor 52 is transmitted to the conversion gear group by the clutch, converted into torque suitable for driving the conversion mechanism by the conversion gear group, and the operation stick 54 is linearly moved by the conversion mechanism. A series of conversion operations is performed, such as the conversion movement of the tongue rail by movement, the conversion operation of the turnout to the normal position/reversal position, and the contact of the tongue rail with the basic rail.

The measurement terminal 30 is detachably attached to the Point machine 50 , measures predetermined measurement items related to the Point machine 50 , and transmits measurement data to the central device 10 . The measuring terminal 30 has a measuring instrument 32 , a control section 34 , a transmitter 36 , a clock section 38 , a nonvolatile memory 40 and a data memory 42 .

The measuring device 32 has sensors for measuring the voltage (motor voltage) and current (motor current) of the electric motor 52 and the stroke position, which is the displacement position of the operation stick 54, as measurement items related to the point machine 50. FIG. Specifically, it has a voltage-current sensor that measures the drive voltage and drive current of the electric motor 52 as a sensor that measures the motor voltage and the motor current. Further, as a sensor for measuring the stroke position, there is a sensor for optically detecting the amount of movement of the operation stick 54, and an optical or magnetic sensor for detecting the amount of rotation of gears of the changeover gear group. If the electric motor 52 is a servomotor, the servomotor performs constant rotation speed control in which the rotation speed is kept constant by controlling the operating current. Therefore, the stroke position can be obtained from the rotation speed and the rotation angle. can. In the present embodiment, these sensors are collectively referred to as the measuring device 32 for the sake of simplicity of explanation, but each sensor can also be said to be the measuring device 32 .

The control unit 34 associates the measured value, which is the result of measurement by the measuring device 32, with the measurement date and time clocked by the clock unit 38, and the calibration completion date and the device ID stored in the nonvolatile memory 40, to create one It is stored in the data memory 42 as measurement data. Then, at an arbitrary timing, a plurality of pieces of measurement data stored in the data memory 42 are collectively transmitted as one measurement data group to the central unit 10 by the transmitter 36 .

The nonvolatile memory 40 can be composed of, for example, ROM, flash memory, MRAM, FeRAM, or the like. The calibration completion date, which is an example of calibration time information for the measuring device 32 , and the device ID, which is identification information for the measuring terminal 30 , are stored in the nonvolatile memory 40 .

The calibration completion date is the date when the calibration for the measuring instrument 32 is completed. The calibration of the measuring instrument 32 is carried out in the factory of the manufacturer who has been certified to carry out the calibration work. When the calibration is completed, the date when the calibration is completed (calibration completion date) is written in the nonvolatile memory 40 together with the device ID by the operator's operation using a predetermined setting device. In this way, the measuring terminal 30 is put into actual operation after the measuring device 32 has been calibrated and the calibration completion date has been written into the nonvolatile memory 40, and is externally attached to the railway lineside facilities to be measured. installed.

Further, calibration of the measuring instrument 32 is repeatedly performed at a predetermined calibration cycle. That is, when the deadline for calibration of the measuring device 32 of the measuring terminal 30 installed for a certain railroad facility approaches, the measuring terminal 30 is removed from the railroad facility, and another measuring device that has been calibrated is removed from the railroad facility. The terminal 30 is replaced. The removed measurement terminal 30 is taken back to the manufacturer's factory and calibrated again, and after a new calibration completion date is set in the non-volatile memory 40, it is shipped. The calibration deadline is the date after a predetermined calibration cycle has passed since the calibration completion date.

The data memory 42 is, for example, a rewritable memory such as a DRAM or an SRAM. Measurement data is stored in the data memory 42 in an accumulative manner by the control unit 34 .

Based on the measurement data relating to the point machine 50 acquired from the measurement terminal 30, the central device 10 inspects the point machine 50, manages the calibration deadline of the measuring device 32 in the measurement terminal 30, and the like. .

[test]
The inspection of the point machine 50 by the central device 10 will be described. The central device 10 creates motion data related to one switching operation of the relevant point machine 50 from the measurement data acquired from the measurement terminal 30, and stores this data as the past operation of the relevant point machine 50. The point machine 50 is inspected by comparing the data as reference data.

FIG. 2 is an example of motion data. In FIG. 2, the horizontal axis is the stroke position L, which is the displacement position of the operation stick 54, and the vertical axis is the load torque T. In FIG. change). The load torque T can be obtained from the motor current. Motor voltage, motor current, and stroke position, which are measured values, are measured by separate sensors for each measurement item, but since all of them are obtained as measured values for the measurement date and time, they can be associated with each other based on the measurement date and time. That is, by obtaining the load torque T from the motor current for each stroke position L, the load torque T for each stroke position L can be obtained.

A series of switching operations of the point machine 50 includes (1) unlocking, which is a period in which the electric motor 52 starts rotating and the locking mechanism is unlocked from a locked state in which the operation lever 54 is stopped; (2) a switching process in which the tip of the tongue rail is brought into close contact with the basic rail after the switching mechanism drives the operation rod 54 to switch the tongue rail until it comes into contact with the basic rail; (3) locking; a locking step during which the mechanism is locked so that the operating pin 54 is brought to a halt and the electric motor 52 stops operating.

The start and end of the series of switching operations of the point machine 50 can be determined from the rotation of the electric motor 52 . That is, the time when the electric motor 52 starts rotating is the start of the unlocking process (start of the conversion operation), and the time when the electric motor 52 finishes rotating is the end of the locking process (end of the conversion operation). Also, the start and end of the conversion process can be determined from the stroke position L. That is, the conversion process starts when the stroke position L starts to be displaced, and ends when the displacement of the stroke position L ends. Also, from the displacement direction of the stroke position L, it is possible to determine the conversion direction (orientation/reversal). In this embodiment, the transition of the load torque T in this series of conversion operations is used as operation data, but only the conversion process may be used as operation data.

When inspecting the point machine 50 based on certain motion data, average motion data is created from the reference data, and this average motion data is compared with the motion data to be inspected.

FIG. 3 is a diagram for explaining the creation of average motion data. As shown in FIG. 3, the past operation data of the point machine 50 are the operation data to be inspected and the turning direction are the same, and the measurement date and time are the latest predetermined number (X in FIG. 3). (X≧2)) is extracted as reference data. Then, an average value Ti of the load torque T at each stroke position is obtained for each of the extracted motion data (reference data) to create average motion data.

式（１）において、「Ｔｉ（Ｌ）」は、検査対象の動作データにおけるストローク位置Ｌでの負荷トルクであり、「Ｔａ（Ｌ）」は、平均動作データにおけるストローク位置Ｌでの負荷トルクであり、「Ｌｍ」は、転換動作の開始から終了までのストローク位置の変化量である。そして、この近似度Ｄを所定のしきい値と比較することで、転てつ機５０について異常の有無を判断するといった検査を行うことができる。 Subsequently, as shown in FIG. 4, the degree of approximation D is calculated as the difference between the motion data of the object to be inspected and the average motion data. The degree of approximation D can be obtained from the following equation (1), for example.

In equation (1), "Ti(L)" is the load torque at stroke position L in the motion data to be inspected, and "Ta(L)" is the load torque at stroke position L in the average motion data. and "Lm" is the amount of change in stroke position from the start to the end of the conversion operation. By comparing the degree of approximation D with a predetermined threshold value, it is possible to inspect the point machine 50 to determine whether or not there is an abnormality.

[Calibration transition period]
When the measurement terminal 30 installed for the point machine 50 is replaced due to the arrival of the calibration deadline or failure, etc., before and after the replacement, the measurement data of the point machine 50 will include the calibration completion date. will contain different data. The calibrated measuring instrument 32 allows only a certain range of measurement error (for example, about ±several percent) as the reliability of its measured value, but conversely, that certain range of measurement error is allowed. . In other words, even with the same rolling point machine 50, if the measuring device 32 that performs the measurement is different, the obtained measured value may be different, although it is within the guaranteed measurement error range.

For this reason, if the motion data extracted as reference data includes motion data to be inspected and motion data with a calibration completion date different from that of the motion data, it is immediately after the replacement of the measuring terminal 30, and a plurality of measurements made by different measuring instruments 32 are performed. It is determined that the values have been extracted as reference data, and the result of the inspection using such reference data is notified together with the inspection results. For example, when the inspection results are displayed and output, the above information is displayed together with the inspection results, and when the inspection results are printed out, the above information is printed together with the inspection results. output.

Since X pieces of motion data with the most recent measurement date and time are extracted as reference data in order, immediately after the replacement of the measuring terminal, motion data based on the measured values of the respective measuring terminals 30 before and after the replacement are mixed and extracted. However, after a certain amount of time has passed since the replacement, all of the extracted motion data will be motion data based on measured values by the measuring terminal 30 after the replacement.

[Calibration deadline management]
Also, the central device 10 manages the calibration deadline of the measuring device 32 of the measuring terminal 30 based on the measurement data received from the measuring terminal 30 . That is, since the calibration cycle is predetermined for each type of measuring instrument 32, the date after the calibration cycle has passed from the calibration completion date included in the received measurement data is set as the calibration deadline, and the number of days remaining until the calibration deadline is the predetermined number of days. In the following cases, the replacement of the measurement terminal 30 is notified with the calibration deadline as the replacement time.

[Function configuration]
FIG. 5 is a block diagram showing the functional configuration of the central unit 10. As shown in FIG. 5, the central unit 10 includes an operation unit 102, a display unit 104, a sound output unit 106, a communication unit 108, a printing unit 110, a processing unit 200, and a storage unit 300. 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 measurement terminal 30 via the communication line N. FIG. The printing unit 110 is realized by, for example, a printing device such as a printer, and prints text and images on a printing medium such as paper.

The processing unit 200 is realized by an arithmetic unit such as a CPU (Central Processing Unit), for example. , performs overall control of the central unit 10 . In addition, the processing unit 200 executes the railway lineside equipment monitoring program 302 stored in the storage unit 300 to perform the measurement data storage unit 202, the inspection unit 204, the transition period processing unit 206, the replacement notification unit 208, the output control unit 210 and a clock unit 212 function as functional blocks. 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 50 to be monitored by the railway lineside facility monitoring system 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 50, and includes a point machine ID 312 for identifying the point machine 50, an accumulated measurement DB (data base) 314, and an accumulated action DB 316. , inspection DB 318 , and replacement notification condition information 320 .

The accumulated measurement DB 314 is a DB that accumulates measurement data about the point machine 50 received from the measurement terminal 30 installed in association with the point machine 50 . One piece of measurement data includes a measurement date and time, a measured value, a calibration completion date, and a device ID.

The cumulative motion DB 316 is a DB in which motion data related to one switching motion of the point machine 50 is accumulated, which is created using the measurement data accumulated and stored as the cumulative measurement DB 314 . As shown in FIG. 6, each piece of motion data is stored in association with a data ID that identifies the motion data, a turning direction, a measurement date and time, a calibration completion date, and a device ID.

The inspection DB 318 is a DB in which data relating to inspection of the point machine 50 is accumulated. As shown in FIG. 7, for each inspection, a reference data list listing data IDs of operation data to be inspected, data IDs of operation data extracted as reference data, and inspection results are stored in association with each other. are doing.

The replacement notification condition information 320 is a condition (replacement notification condition) for notifying replacement of the measuring terminal 30 installed for the point machine 50 . Specifically, the replacement notification condition is a condition for notifying replacement of the measuring terminal 30 due to the approaching calibration deadline of the measuring instrument 32, and is defined as a condition of the number of days remaining until the calibration deadline, for example, within two months. be done. The calibration deadline is the date after the calibration cycle determined for each type of measuring instrument 32 has elapsed from the calibration completion date. The replacement notification condition information 320 may include a calibration cycle for each type of measuring instrument 32 .

The measurement data accumulation unit 202 adds each measurement data included in the measurement data group received from the measurement terminal 30 to the accumulation measurement DB 314 in the point machine management data 310 for the corresponding point machine 50 .

The inspection unit 204 performs a predetermined inspection on a new measurement result to be inspected, using the past measurement result of the same railroad facility included in the measurement data as reference data. Specifically, based on the measurement data included in the measurement data group received from the measurement terminal 30, motion data relating to one conversion motion of the corresponding point machine 50 is created, and this data is sent to the inspection object. It is used as operation data. Next, from among the past motion data of the point machine 50 stored as the cumulative motion DB 316, a predetermined number of motion data having the same turning direction as the motion data to be inspected and having the most recent measurement date and time are selected. , is extracted as reference data. Then, average motion data is created by calculating the average value of the load torque at each stroke position for each of the extracted motion data. Subsequently, as the difference between the motion data to be inspected and the created average motion data, the degree of approximation D is calculated according to Equation (1), and the calculated degree of approximation D is compared with a predetermined threshold value to obtain the conversion. Conduct inspections such as determining the presence or absence of abnormalities in the iron machine.

When the inspection is completed, the motion data of the inspection object is added to the accumulated motion DB 316 and the data about the inspection is added to the inspection DB 318 . Also, the inspection results are notified. As the notification, for example, together with the identification information (such as the point machine ID) of the relevant point machine 50, the inspection result is displayed on the display unit 104, output by sound from the sound output unit 106, or output from the printing unit 110. For example, it can be printed out.

The transition period processing unit 206 sets the calibration completion date, which is calibration time information for each of the past operation data extracted as reference data for inspection by the inspection unit 204, and the calibration completion date, which is calibration time information for the operation data to be inspected. If the predetermined same calibration conditions for which the dates are common are not met, it is judged to be in the transitional period for calibration, and the transitional period processing is performed. Specifically, the same calibration condition is that the calibration completion date of all motion data extracted as reference data is the same as the calibration completion date of the motion data to be inspected. Since X pieces of motion data whose measurement date and time are traced back in order and extracted as reference data, immediately after the replacement of the measuring terminal 30, the motion data based on the measured values of the respective measuring terminals 30 before and after the replacement are mixed and extracted. Therefore, although the same calibration conditions are not satisfied, after a certain amount of time has passed since the replacement, all of the extracted motion data will be based on the measurement values of the measurement terminal 30 after the replacement, and the same calibration conditions will be satisfied. become.

If the same calibration condition is not satisfied, it is determined that it is a calibration transitional period in which operation data from a plurality of measuring terminals 30 before and after the replacement of the measuring terminal 30 are mixed, and predetermined transitional period processing is performed. As a transition period process, when notifying the inspection result by the inspection unit 204, it is also notified that the inspection result is obtained using the measurement value of the measuring terminal 30 which differs depending on the replacement as the reference data. Alternatively, the inspection itself by the inspection unit 204 may not be performed (suppressed) as transitional processing.

The replacement notification unit 208 notifies when to replace the measuring terminal 30 based on the calibration completion date, which is calibration time information included in the measurement data received from the measuring terminal 30 . Specifically, from the calibration completion date included in the measurement data included in the measurement data group received from the measurement terminal 30, the date after the calibration cycle of the corresponding measuring instrument 32 has elapsed is determined as the calibration deadline. It is determined whether the remaining number of days from the current date and time to this calibration deadline, which is measured in , satisfies the replacement notification condition defined by the replacement notification condition information 320 .

When the exchange notification condition is satisfied, a predetermined notification prompting the exchange is performed. As the notification, for example, a message prompting replacement of the measuring terminal 30, the calibration deadline, the remaining days until the calibration deadline, etc. are displayed on the display unit 104 along with the identification information of the corresponding measuring terminal 30 and the point machine 50. , audio output from the sound output unit 106, and print output from the printing unit 110 can be performed.

The output control unit 210 performs control to output each measurement result included in the measurement data stored in the storage unit 300 in the form of a list in association with calibration time information. Specifically, the measurement value included in each measurement data accumulated and stored as the accumulation measurement DB 314 is associated with the calibration completion date, and a list arranged in chronological order according to the measurement date and time is created. The output is controlled such that the image is displayed and output by the printing unit 110 . In addition, as a list, measurement data is extracted for each predetermined unit period such as a month or a year according to the measurement date and time, and the measurement values of each of the extracted measurement data are associated with the calibration completion date to create a form arranged in chronological order in a predetermined format. can also

The clock unit 212 uses the system clock to measure the current date and time and the elapsed time from the designated timing.

The storage unit 300 is realized by a storage device such as a hard disk, a ROM (Read Only Memory), a RAM (Random Access Memory), etc., and stores programs, data, etc. for the processing unit 200 to integrally control the central unit 10. In addition, it is used as a work area of 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. In this embodiment, the storage unit 300 stores a railway trackside facility monitoring program 302 and point machine management data 310 .

[Process flow]
FIG. 8 is a flowchart for explaining the flow of the railroad facility state determination process. This processing is executed by the processing unit 200 in parallel for each of the point machines 50 .

First, when a measurement data group related to the Point machine 50 is received from the measurement terminal 30 installed for the target Point machine 50 (step S1: YES), the measurement data accumulation unit 202 The measurement data included in the received measurement data group is added to the accumulated measurement DB 314 of the corresponding point machine management data 310 (step S3).

Next, based on the calibration completion date included in each measurement data of the received measurement data group, the replacement notification unit 208 determines whether the replacement notification condition defined by the replacement notification condition information 320 of the corresponding point machine management data 310 is met. is determined (step S5). If it is determined that the replacement notification condition is satisfied (step S7: YES), for example, a message is displayed to prompt replacement of the measuring terminal 30 along with the calibration deadline (step S9).

Subsequently, the inspection unit 204 creates new motion data based on each measurement data of the received measurement data group, and uses it as motion data to be inspected (step S11). Next, from the cumulative motion DB 316 of the relevant point machine management data 310, a predetermined number of motion data having the same turning direction as the motion data to be inspected and having the most recent measurement date and time are extracted as reference data (step S13). ). Subsequently, average motion data is created by averaging the reference data, and the motion data to be inspected is compared with the average motion data, thereby performing an inspection on the motion data to be inspected (step S15). Then, for example, the inspection result is notified by displaying the inspection result together with the identification information of the point machine 50 (step S17).

Also, the transition period processing unit 206 determines whether the motion data extracted as the reference data satisfies the same calibration condition that the motion data to be inspected and the calibration completion date are common (step S19). If it is determined that the same calibration condition is not satisfied (step S21: NO), along with the notification of the inspection result by the inspection unit 204, the inspection result is the operation data whose calibration completion date is not common to the operation data to be inspected. as reference data (step S23).

After that, the data related to the motion data to be inspected is added to the accumulated motion DB 316 of the corresponding point machine management data 310 (step S25). In addition, the data regarding the performed inspection is added to the inspection DB 318 of the corresponding point machine management data 310 (step S27). After performing the above processing, the process returns to step S1 and repeats the same processing.

[Effect]
As described above, in the railway lineside facility monitoring system 1 of the present embodiment, the measurement terminals 30 installed in each of the point machines 50, which are an example of the railway lineside facility to be monitored, obtain the measured value by the measuring device 32 and the relevant It is transmitted to the central unit 10 as one piece of measurement data in association with the calibration completion date set and stored when the measuring instrument 32 is calibrated.

The central device 10 determines the calibration deadline from the calibration completion date, which is the calibration time information included in the measurement data received from the measurement terminal 30, and if the number of days remaining until the calibration deadline satisfies the replacement notification condition, the measurement terminal 30 A predetermined notification is given to prompt replacement. With this notification, the maintenance worker grasps the measuring terminal 30 whose calibration deadline is approaching, adjusts the maintenance work schedule, prepares the calibrated measuring terminal 30, and smoothly replaces the measuring terminal 30. be able to. As a result, the expiration of the calibration period of the measuring device 32 is prevented, the reliability of the measured value by the measuring device 32 is ensured, and the validity of the inspection result performed using this measured value is ensured.

In addition, the central unit 10 creates motion data related to one switching motion of the corresponding point machine 50 based on the measurement data received from the measurement terminal 30, and stores this motion data to the stored By comparing past operation data of the point machine 50 as reference data, an inspection is performed to determine whether or not the point machine 50 is abnormal. At this time, if all the calibration completion dates of the past operation data extracted as reference data do not satisfy the same calibration conditions as those of the operation data to be inspected, this fact is notified together with the inspection results. do. As a result, it becomes possible to monitor the condition of the railway lineside facilities in consideration of the discontinuity of the measurement data due to the replacement of the measuring instrument 32 associated with the calibration.

[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) Reference Data For example, as a condition for extracting motion data as reference data, it may be added that the motion data to be inspected and the calibration completion date are the same. That is, a predetermined number of pieces of operation data having the same turning direction and the same calibration completion date as the inspection target operation data are selected and extracted from the measurement date and time. In this case, for example, immediately after the measurement terminal 30 is replaced, there is a possibility that the number of motion data to be extracted does not reach the predetermined number. It may be created and inspected, and the fact that the number of reference data is insufficient may be notified together with the inspection result, or the inspection may not be performed.

(B) Calibration Deadline Information In the above-described embodiment, the calibration time information of the measuring instrument 32 is the calibration completion date, but it may be the calibration deadline determined from the calibration completion date and the calibration cycle.

(C) Inspection In the above-described embodiment, as an inspection of the rolling point machine 50 based on the measurement data, the degree of approximation D is obtained according to the formula (1) and compared with a predetermined threshold value. , the inspection method is not limited to this. For example, X current values and voltage values that satisfy certain conditions during the conversion operation (for example, the peak value during the conversion process) are extracted in the same manner as in the above-described embodiment, and the average value is obtained. Of the measurement data, the inspection may be performed by performing threshold determination based on the difference between the current value and the voltage value that satisfy the same conditions.

(D) Central device 10
Also, as a function of the central unit 10, the stored measurement data may be output. For example, for each point machine 50, for each piece of measurement data stored as the accumulated measurement DB 314 of the corresponding point machine management data 310, measured values and calibration completion are displayed in chronological order according to the measurement date and time. Dates and device IDs (identification information of measuring terminals) are displayed and output as a list. Also, from the change in the calibration completion date of each measurement data stored as the accumulated measurement DB 314, the replacement of the measuring terminal 30 is determined, and the replacement timing, the device ID of the measuring terminal 30 before and after replacement, and the calibration completion date are determined. You may make it display-output.

(E) measuring instrument 32
In the above-described embodiment, the measuring terminal 30 including the measuring device 32 is replaced. good too. However, in that case, the nonvolatile memory 40 is built in the measuring instrument 32, and the ID of the measuring instrument 32 is stored in the nonvolatile memory 40 as the device ID.

(F) Railway line facilities In the above-described embodiment, the point machine was described as an example of railway line facilities, but the present invention can also be applied to other railway line facilities such as track circuits, railroad crossing barriers, and platform doors. equally applicable.

REFERENCE SIGNS LIST 1 railway trackside facility monitoring system 10 central device 200 processing unit 202 measurement data accumulation unit 204 inspection unit 206 transition processing unit 208 replacement notification unit 210 output control unit 212 clock unit 300 storage unit 302 Railway line facility monitoring program 310 Point machine management data 30 Measuring terminal 32 Measuring instrument 34 Control unit 36 Transmitter 38 Clock unit 40 Nonvolatile memory 42 Data memory 50 Point machine

Claims (7)

A measuring instrument having calibration time information for measuring predetermined measurement items for facilities along a railway line, and a transmitter for transmitting measurement data in which the measurement result of the measuring instrument, the measurement date and time, and the calibration time information are associated with each other. a measuring terminal comprising
a storage unit that stores the measurement data received from the measurement terminal ; an inspection unit that selects X measurement results (X≧2) as reference data and performs a predetermined inspection on the new measurement result using the reference data; and the calibration time information included in the measurement data. a central device comprising a replacement notification unit that notifies when to replace the measuring instrument and/or the measuring terminal based on
is a railway lineside facility monitoring system configured by communication connection ,
The central device is
When the calibration time information of the X measurement results as the reference data and the calibration time information of the new measurement result to be inspected do not all satisfy a common predetermined same calibration condition, measurement before and after the replacement A transition period processing unit that performs transition period processing to notify that it is a calibration transition period in which the result is mixed in the reference data,
Railway line equipment monitoring system. The transitional period processing unit performs a process of suppressing the inspection by the inspection unit as the transitional period process,
The railway trackside facility monitoring system according to claim 1 . A measuring instrument having calibration time information for measuring predetermined measurement items for facilities along a railway line, and a transmitter for transmitting measurement data in which the measurement result of the measuring instrument, the measurement date and time, and the calibration time information are associated with each other. a measuring terminal comprising
a storage unit for storing the measurement data received from the measurement terminal; and a storage unit for storing the measurement data received from the measurement terminal ; X pieces (X≧2) of the same past measurement results are selected from the new measurement result by tracing back the measurement date and time to be used as reference data, and a predetermined inspection is performed on the new measurement result using the reference data. a central device comprising: an inspection unit; and a replacement notification unit that notifies when to replace the measuring device and/or the measuring terminal based on the calibration time information included in the measurement data;
is a railway lineside facility monitoring system configured by communication connection ,
The central device is
a transition period processing unit that performs, as a transition period process, a process of suppressing the inspection by the inspection unit when X past measurement results having the same calibration time information as the new measurement result do not exist. ,
Railway line equipment monitoring system. The central device is
an output unit that outputs each measurement result included in the measurement data stored in the storage unit in a list in association with calibration time information;
A railway trackside equipment monitoring system according to any one of claims 1 to 3 . The measurement terminal further comprises a non-volatile memory that stores the calibration time information set by a predetermined setting device connected when calibrating the measuring instrument,
The railway lineside equipment monitoring system according to any one of claims 1 to 4 . The central device of a railway lineside facility monitoring system configured by connecting a measurement terminal and a central device for communication,
The measurement terminal stores a measuring instrument having calibration time information for measuring predetermined measurement items for railway facilities, and measurement data in which the measurement results of the measuring instrument, the measurement date and time, and the calibration time information are associated with each other. a transmitter for transmitting;
a storage unit that stores the measurement data received from the measurement terminal;
Among the past measurement results related to the same railroad facility included in the measurement data, X (X≧2) measurement results are selected as reference data from the new measurement results to be inspected by tracing back the measurement date and time. and an inspection unit that performs a predetermined inspection on the new measurement result using the reference data;
a replacement notification unit that notifies when to replace the measuring device and/or the measuring terminal based on the calibration time information included in the measurement data received from the measuring terminal;
When the calibration time information of the X measurement results as the reference data and the calibration time information of the new measurement result to be inspected do not all satisfy a common predetermined same calibration condition, measurement before and after the replacement a transition period processing unit that performs transition period processing for notifying that it is a calibration transition period in which the result is mixed with the reference data;
Central device with The central device of a railway lineside facility monitoring system configured by connecting a measurement terminal and a central device for communication,
The measurement terminal stores a measuring instrument having calibration time information for measuring predetermined measurement items for railway facilities, and measurement data in which the measurement results of the measuring instrument, the measurement date and time, and the calibration time information are associated with each other. a transmitter for transmitting;
a storage unit that stores the measurement data received from the measurement terminal;
Among the past measurement results related to the same railroad facility included in the measurement data, the past measurement results having the same calibration time information as the new measurement results to be inspected are obtained from the new measurement results from the measurement date and time. an inspection unit that traces back and selects X pieces (X≧2) as reference data, and performs a predetermined inspection on the new measurement result using the reference data ;
a transition period processing unit that performs, as a transition period process, a process of suppressing the inspection by the inspection unit when X past measurement results having the same calibration time information as the new measurement result do not exist;
a replacement notification unit that notifies when to replace the measuring device and/or the measuring terminal based on the calibration time information included in the measurement data received from the measuring terminal;
Central device with

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