JP2022181387A - Information processing system, information processing device, information generating method and program - Google Patents

Abstract

To provide a method by which useful information for management of a track on which a traveling body runs is generated.SOLUTION: On a train 1, a receiver 300, a measuring device 400 and a data logger 500 are mounted. The receiver acquires position information of a plurality of measuring positions 6 along an orbit 2 using a satellite positioning system 200. The measuring device measures orbit diagnosing information which is at least one of an acceleration, an inclination and a track gage. The data logger causes the position information of the measuring positions 6 acquired by the receiver 300 and the orbit diagnosing information measured by the measuring device 400 to be synchronized in time and gathers and stores them. A high precision positioning in centimeter class is achieved by means of an interference positioning by using GNSS (Global Navigation Satellite System) as a satellite positioning system 200. An information processing unit 600 replaces position information of the measuring positions 6 gathered by the data logger 500 with position information of reference points 5 closest thereto. The reference points 5 are set along the orbit 2 with, for example, 25 cm interval and position information of the points is a known value.SELECTED DRAWING: Figure 1

Description

The present invention relates to an information processing system, an information processing apparatus, an information generation method, and a program for generating information used for managing a track on which a moving body travels.

As a technology related to the management of tracks on which running bodies such as trains run, Patent Document 1, for example, discloses a train oscillation location detection system using GPS that enables identification of locations where train oscillation exceeds a reference value. . In Patent Document 1, based on the position information, time information, speed information from the GPS device, and the reference position information, the distance traveled by the train against time is obtained, and the time when the train vibration exceeds the reference value is the time of the distance traveled. to identify locations where train sway exceeds the reference value.

Japanese Patent No. 4056050

However, when positioning is performed using GPS as in Patent Document 1, the positioning accuracy may be rough. If the positioning accuracy is low, even if an attempt is made to identify a location where train vibration exceeds the reference value during on-site inspection, the location cannot be identified with high accuracy. In addition, train sway that is not abnormal may occur due to the structure of the track such as rail joints, branch sections, and railroad crossings. It becomes impossible to accurately separate whether a train sway due to deterioration of the track (abnormal train sway) has occurred.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to generate useful information for managing a track on which a vehicle travels.

An information processing system of the present invention is an information processing system that generates information used for managing a trajectory on which a running body travels, and is mounted on the running body and uses a satellite positioning system to track along the trajectory. an acquisition device that acquires position information of a plurality of positioning positions; a measurement device that is mounted on the traveling body and measures track diagnostic information that is at least one of acceleration, angular velocity, inclination, and gauge; A collection means for synchronizing and collecting the position information of the positioning position acquired by the acquisition device and the trajectory diagnosis information measured by the measurement device; and correction means for correcting based on the positional information of the reference points set along the trajectory.
An information processing device according to the present invention is an information processing device that generates information used for managing a trajectory on which a running body travels, and is mounted on the running body and uses a satellite positioning system to track along the trajectory. Using an acquisition device that acquires position information of a plurality of positioning positions, and a measurement device that is mounted on the traveling body and measures track diagnostic information that is at least one of acceleration, angular velocity, inclination, and gauge. an input means for inputting the collected position information of the positioning position and the trajectory diagnosis information in which time is synchronized; and setting the position information of the positioning position inputted by the input means along the track correction means for correcting based on the position information of the reference point.
An information generating method of the present invention is an information generating method for generating information used for managing a trajectory on which a running body travels, and is mounted on the running body and along the trajectory using a satellite positioning system. Using an acquisition device that acquires position information of a plurality of positioning positions, and a measurement device that is mounted on the traveling body and measures track diagnostic information that is at least one of acceleration, angular velocity, inclination, and gauge. a step of collecting the position information of the positioning positions and the trajectory diagnosis information by synchronizing the time; and collecting the collected position information of the positioning positions based on position information of reference points set along the trajectory. and a step of correcting by
A program of the present invention is a program for generating information used for managing a trajectory on which a traveling body travels, and is mounted on the traveling body and uses a satellite positioning system to track a plurality of points along the trajectory. Using an acquisition device that acquires position information of the positioning position and a measurement device that is mounted on the traveling body and measures track diagnostic information that is at least one of acceleration, angular velocity, inclination, and gauge, A process of collecting the position information of the positioning position and the trajectory diagnostic information in synchronization with the time, and correcting the collected position information of the positioning position based on the position information of the reference points set along the trajectory. causes the computer to execute the processing to be performed.

According to the present invention, it is possible to generate useful information for managing a track on which a moving body travels.

1 is a diagram showing a schematic configuration of an information processing system according to an embodiment; FIG. FIG. 3 is a schematic diagram for explaining an outline of a track; 4 is a diagram schematically showing an example of management information; FIG.

Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.
FIG. 1 is a diagram showing a schematic configuration of an information processing system 100 according to an embodiment. Moreover, FIG. 2 is a schematic diagram for explaining the outline of the track 2 on which the train 1 runs. The track 2 is a structure including rails 3, sleepers 4, and the like. The information processing system 100 generates information used for management of the track 2 (hereinafter referred to as management information).

As shown in FIG. 1, the train 1 is equipped with a receiver 300 , a measuring device 400 , a data logger 500 and an information processing device 600 .

The receiver 300 is an acquisition device that performs positioning using the satellite positioning system 200 and acquires position information consisting of latitude, longitude, and altitude. As the train 1 runs, as shown in FIG. 2, positional information of a plurality of positions (referred to as positioning positions in the present application) 6 along the track 2 is acquired. As the satellite positioning system 200, GNSS (Global Navigation Satellite System) including GPS (Global Positioning System) satellites and quasi-zenith satellite system Michibiki is used. By performing interferometric positioning using the phase of carrier waves from artificial satellites using GNSS, centimeter-level high-precision positioning can be performed, enabling highly accurate positioning. In experiments, it has been confirmed that by using the Quasi-Zenith Satellite System, it is possible to obtain positional information, for example, for horizontal position (latitude and longitude), even when moving, with an accuracy of over 90% and an error range of less than 20 cm. .

In addition, the receiver 300 incorporates an inertial sensor 301, and assuming a state in which reception from the satellite positioning system 200 is not possible (when entering a tunnel, etc.), the position information of the positioning position 6 can also be obtained based on the vehicle speed pulse of the train 1. is configured to obtain A well-known technique may be used for acquiring position information using an inertial sensor, and detailed description thereof will be omitted here.

The measuring device 400 measures track diagnostic information, which is at least one of acceleration, angular velocity, inclination, and gauge. That is, the measuring devices 400 include an acceleration measuring device for measuring the acceleration of the train 1, an angular velocity measuring device for measuring the angular velocity of the train 1, an inclination measuring device for measuring the inclination of the train 1, and a gauge measuring device for measuring the gauge of the track 2. All or part of the is installed. For example, an acceleration measuring device, an angular velocity measuring device, and an inclination measuring device may be configured by appropriately combining an acceleration sensor, an angular velocity sensor, and an inclination sensor. Further, the gauge measuring device may be configured to measure the gauge from the rail edge by a profile meter using laser light. The track diagnosis information is continuously output from the measuring device 400 at intervals of, for example, several milliseconds to ten-odd milliseconds.

The data logger 500 collects and stores the position information of the positioning position 6 acquired by the receiver 300 and the trajectory diagnosis information measured by the measuring device 400 in synchronization with each other. The data logger 500 uses a time server (not shown), based on the time obtained from the satellite positioning system 200, the position information of the positioning position 6 acquired by the receiver 300 and the trajectory measured by the measuring device 400 Synchronize time and collect diagnostic information. In this embodiment, the data logger 500 functions as the collecting means of the present invention.

The information processing device 600 generates management information based on the position information of the positioning position 6 collected by the data logger 500 and the track diagnosis information.
The information processing device 600 includes a storage unit 601 , an input unit 602 , a correction unit 603 , an arithmetic unit 604 and an output unit 605 .

The storage unit 601 stores the position information of the reference points 5 set along the track 2, as shown in FIG. The reference points 5 are set along the track 2 at intervals of several tens of centimeters (10 cm to 99 cm), for example, at intervals of 25 cm. The positional information of each fixed reference point 5 can be a known value by using, for example, a CAD drawing including primary reference points.

The storage unit 601 also stores position information of rail joints, position information of branch sections, and position information of railroad crossing sections. The positional information of each rail joint, branch section, and railroad crossing section can be set to a known value by using, for example, a CAD drawing including primary reference points.

The input unit 602 inputs the position information of the positioning position 6 collected by the data logger 500 and the track diagnosis information. The position information and the orbit diagnosis information are synchronized based on the time obtained from the satellite positioning system 200 as described above, and are associated with each other.

The correction unit 603 converts the position information of the positioning position 6 input by the input unit 602 (that is, the position information of the positioning position 6 collected by the data logger 500 ) into the position information of the reference point 5 stored in the storage unit 601 . corrected based on Specifically, the correction unit 603 replaces the position information of the positioning position 6 collected by the data logger 500 with the position information of the closest reference point 5, as exemplified by the arrow 7 in FIG. As a result, the position information of the reference point 5 and the track diagnosis information are associated with each other. Interferometric positioning using GNSS enables highly accurate positioning. Therefore, even if the position information of the positioning position 6 is replaced with the position information of the closest reference point 5, a large positional deviation will not occur. do not have. Note that the position information of a plurality of positioning positions 6 may be replaced with the position information of one reference point 5 . In this embodiment, the correction unit 603 of the information processing device 600 functions as the correction means of the present invention.

As mentioned above, interferometric positioning using GNSS enables highly accurate positioning. Location information may be slightly misaligned. Therefore, if the position information obtained by using the satellite positioning system 200 is used as it is, it becomes difficult to grasp the temporal change of the orbit diagnosis information at a fixed point, for example. Therefore, by replacing the position information obtained using the satellite positioning system 200 with the position information obtained at the closest reference point 5, it is possible to compare the orbit diagnosis information with different dates and times at a fixed position. It becomes easier to grasp changes over time in track diagnostic information at a fixed point.

The calculation unit 604 uses the track diagnostic information input by the input unit 602 (that is, the track diagnostic information collected by the data logger 500) to calculate the average value of the track diagnostic information for each reference point 5. A calculation including at least one of abnormal value cut processing, dispersion processing, and moving average processing is performed to obtain track diagnostic information at the reference point 5 . For example, when the position information of a plurality of positioning positions 6 is replaced with the position information of one reference point 5, the average value of the trajectory diagnostic information associated with the position information of the plurality of positioning positions 6 is calculated. The value is used as track diagnostic information at the reference point 5 . Also, the track diagnosis information at the reference point 5 may include gauge displacement, alignment displacement, level displacement, planarity displacement, elevation displacement, etc. obtained by abnormal value cut processing, dispersion processing, and moving average processing by filtering.

The output unit 605 outputs, as management information, information indicating the relationship between the information specifying the reference point 5 and the track diagnostic information at the reference point 5, as shown in FIG. 3, for example. The information specifying the reference point 5 may be, for example, the positional information of the reference point 5 itself, or may be the identification information when each reference point 5 is given identification information. The output unit 605 displays the management information on a display unit (not shown). Based on the management information generated in this way, for example, at the time of on-site inspection, an inspector brings a receiver of a portable satellite positioning system to determine the inspection position where the inspector is and the reference point near the inspection position. It is easy to compare with the track diagnosis information in 5, and the position where changes such as acceleration, angular velocity, inclination, and gauge appear can be specified with high accuracy.
As shown in FIG. 3, the management information includes the positional information of rail joints, the positional information of branch sections, and the positional information of railroad crossing sections stored in the storage unit 601 . As a result, when a change in acceleration, angular velocity, inclination, track gauge, etc. appears, it is possible to accurately separate whether the change is due to the structure of the track 2 or due to deterioration of the track 2. , the deterioration of the track 2 can be accurately captured.

Note that the management information shown in FIG. 3 is merely an example, and is not limited to this. For example, a map including the trajectory 2 may be displayed, and the trajectory diagnosis information at each reference point 5 may be displayed on the map. For example, the reference points 5 whose track diagnostic information is within the normal range are displayed in green, the reference points 5 whose track diagnostic information exceeds a predetermined threshold _th1 are displayed in yellow representing "caution", and the track diagnostic information is displayed in yellow. For example, the reference point 5 exceeding the threshold th ₂ (>th ₁ ) may be displayed in red to indicate "abnormal".
Also, an example in which management information is displayed on the display unit as an output from the output unit 605 has been described, but the present invention is not limited to this. As an output from the output unit 605, for example, management information may be stored in a storage area (not shown) or transmitted to another device.

The information processing device 600 configured as described above is configured by a computer device including, for example, a CPU, a ROM, and a RAM. function is realized.
Although the information processing device 600 is mounted on the train 1, the information processing device 600 is not limited to this, and may be installed at a location other than the train 1. FIG. Information collected by the data logger 500 while the train 1 is running is transmitted to an information processing device 600 installed at a location other than the train 1 via a network such as wireless communication to generate management information. good too. Further, the management information does not have to be generated in real time, and the information collected by the data logger 500 while the train 1 is running is input later to the information processing device 600 installed at a place other than the train 1, Management information may be generated.

As described above, by performing interferometric positioning using GNSS and using the position information of the reference point 5, during on-site inspection, the inspection position where the inspector is present and the track diagnosis information near the inspection position Matching is easy, and positions where changes in acceleration, angular velocity, inclination, gauge, etc. appear can be specified with high accuracy, and track management on the order of centimeters becomes possible. In addition, when a change in acceleration, angular velocity, inclination, gauge, etc. appears, it is possible to accurately separate whether the change is caused by the structure of the track 2 or by deterioration of the track 2. 2 deterioration can be accurately grasped. Moreover, by using the positional information of the reference point 5, it becomes easier to grasp the temporal change of the track diagnostic information at the fixed point. In this way, information useful for managing track 2 can be generated.

As described above, the present invention has been described together with the embodiments, but the above-described embodiments merely show specific examples for carrying out the present invention, and the technical scope of the present invention is not construed in a limited manner. It should not be. That is, the present invention can be embodied in various forms without departing from its technical concept or main features.
(Other embodiments)
The present invention supplies a program that implements one or more functions of the above-described embodiments to a system or device via a network or a storage medium, and one or more processors in the computer of the system or device reads and executes the program. It can also be realized by processing to It can also be implemented by a circuit (for example, ASIC) that implements one or more functions.

1: train, 2: track, 100: information processing system, 200: satellite positioning system, 300: receiver, 400: measuring device, 500: data logger, 600: information processing device, 601: storage unit, 602: input unit , 603: correction unit, 604: calculation unit, 605: output unit

Claims (10)

An information processing system that generates information used for managing a track on which a traveling object travels,
an acquisition device that is mounted on the traveling body and acquires position information of a plurality of positioning positions along the orbit using a satellite positioning system;
a measuring device mounted on the running body for measuring track diagnostic information, which is at least one of acceleration, angular velocity, inclination and gauge;
a collection means for synchronizing the time and collecting the position information of the positioning position acquired by the acquisition device and the trajectory diagnosis information measured by the measurement device;
and correction means for correcting the position information of the positioning positions collected by the collecting means based on the position information of reference points set along the trajectory. 2. The information processing system according to claim 1, wherein said correcting means replaces the position information of said positioning position collected by said collecting means with the position information of said reference point closest thereto. At least one of averaging processing for calculating an average value of the trajectory diagnostic information for each reference point, abnormal value cut processing by filtering, dispersion processing, and moving average processing using the trajectory diagnostic information collected by the collecting means. 3. An information processing system according to claim 1, further comprising computing means for performing computation including one. 4. Storage means for storing at least one of position information of rail joints, position information of branch sections, and position information of railroad crossing sections. The information processing system according to . 5. The information processing system according to claim 1, wherein the reference points are set at intervals of about several tens of centimeters along the track. 6. The information processing system according to any one of claims 1 to 5, wherein said collecting means synchronizes based on the time obtained from said satellite positioning system. 7. The information processing system according to claim 1, wherein interferometric positioning is performed using a global satellite positioning system as said satellite positioning system. An information processing device that generates information used for managing a track on which a traveling object travels,
an acquisition device mounted on the running body and acquiring position information of a plurality of positioning positions along the orbit using a satellite positioning system; an input means for inputting the location information of the positioning position and the track diagnostic information collected by using at least one measuring device for measuring the track diagnostic information, and for inputting the time-synchronized position information of the positioning position and the track diagnostic information;
and correction means for correcting the position information of the positioning position input by the input means based on the position information of the reference points set along the trajectory. An information generating method for generating information used for managing a track on which a moving body travels,
an acquisition device mounted on the running body and acquiring position information of a plurality of positioning positions along the orbit using a satellite positioning system; a step of collecting the position information of the positioning position and the trajectory diagnostic information in synchronization with each other by using at least one measuring device for measuring the trajectory diagnostic information;
and correcting the collected positional information of the positioning positions based on the positional information of reference points set along the trajectory. A program for generating information used for managing a track on which a traveling object travels,
an acquisition device mounted on the running body and acquiring position information of a plurality of positioning positions along the orbit using a satellite positioning system; A process of collecting the position information of the positioning position and the trajectory diagnostic information in synchronization with each other using at least one measuring device for measuring the trajectory diagnostic information;
A program for causing a computer to execute a process of correcting the collected position information of the positioning positions based on the position information of reference points set along the track.

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