JP2004098878A - Train rocking part detecting system using gps - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately and shortly specify a part of train rolling exceeding a reference value by utilizing a GPS. <P>SOLUTION: This system comprises a measuring device 1 for measuring a time change of train rolling, a GPS device 2 provided in a train for outputting position information, time information and speed information, a database 4 storing information for a plurality of reference positions on a track, and a data processor 3 for inputting measurement data from the measuring device and the position information, time information and speed information from the GPS device. The data processor finds the kilometrage of the train per time in accordance with the position information, time information and speed information from the GPS device and the information for the reference positions stored in the database, coordinates a time for train rolling exceeding the reference value to a time for the kilometrage and specifies the part of train rolling exceeding the reference value. <P>COPYRIGHT: (C)2004,JPO

Description

TECHNICAL FIELD OF THE INVENTION
The present invention relates to a system capable of accurately specifying a location on a track where a train swing exceeding a reference value has occurred in a short time using a GPS.
[Prior art]
In the conventional train sway management, for example, a measuring device is carried into a vehicle, and the pitch and roll of the train are measured as gal (G) values. Re-inspection and repair work are performed by identifying the location on the orbit where the values were recorded (oscillation location). In this case, during the measurement by the measuring device, manually input the position information at predetermined intervals, and also use a video camera installed on the train to search around the track so that it is possible to search for a place where the vibration exceeds the reference value. Based on the measurement data and the video image, the user has identified the shaking point that exceeds the reference value while looking at the experience and the map. In addition, there is a type in which a measuring device is permanently installed in a train, but the specification of a shaking point exceeding a reference value is basically the same.
[Problems to be solved by the invention]
However, it was extremely time-consuming for a tracker to find a shaking point exceeding a reference value based on a video image. Therefore, it is conceivable to search for a shaking point exceeding a reference value by utilizing the GPS.
By the way, an operation management system that detects a driving abnormality by comparing a train speed and a driving route generated from GPS data by installing a GPS receiver in a train with a standard speed database and a standard route database has been proposed ( For example, see Patent Document 1).
It has also been proposed to install a GPS receiver in a train to acquire the position of the own vehicle and acquire the position of another vehicle by a communication line to ensure the safety of train operation (for example, see Patent Document 2). .
[Patent Document 1]
JP 2001-341644 A (FIGS. 1, 2, 3, and 4)
[Patent Document 2]
JP-A-2000-318613 (FIGS. 1 and 2)
As described above, it has been proposed to use the GPS as a means for determining the position of a running train. However, it is intended to utilize the GPS as a means for accurately and quickly specifying a location where the train sway exceeds a reference value. No idea.
[Means for Solving the Problems]
The present invention is intended to solve the above-described problem, and aims to accurately and quickly identify a location where train sway exceeds a reference value by using GPS.
For this purpose, the present invention stores a measurement device that measures the time change of train sway, a GPS device that is provided in the train and outputs position information, time information, and speed information, and a plurality of reference position information on a track. A database, and a data processing device to which measurement data from the measurement device, position information, time information, and speed information from the GPS device are input, wherein the data processing device includes position information, time information, and speed from the GPS device. Information, and the travel distance of the train with respect to time is obtained based on the reference position information stored in the database, and the time when the train sway exceeds the reference value corresponds to the time of the travel kilometers, and the train sway exceeds the reference value. It is characterized by specifying the place where it was done.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a conceptual diagram showing a system configuration of the present embodiment.
The measuring device 1 is a portable type or a permanent type which is conventionally used, and measures and records a gal (G) value of a train sway (pitch, roll) as change data with respect to time.
The GPS device 2 is attached to a train and calculates and outputs time information, position information, and train speed information from radio signals from a plurality of satellites received by an antenna (not shown), and commercially available products can be used.
The data processing device 3 is composed of a personal computer or the like, and has a database 4 in which positional information (eg, a kilometer from a starting position, etc.) of a fixed reference position on a track, such as a station or a railroad crossing, is stored. From the time based on the time information, the position information and the train speed information from the vehicle, and from the time (time) when the G value exceeds the reference value in the measurement data of the measuring device 1, the location (km ) Is specified. The time information of the measurement data may be obtained by incorporating a clock in the measurement device 1, or the measurement data may be acquired in real time by the data processing device 3 and obtained by the clock mechanism of the data processing device. Good.
The output device 5 is a display such as a CRT, a printer, or an external storage device, and can display, print, or store data as needed.
FIG. 2 is a diagram showing an example of the measurement data.
Data of the G value indicating the magnitude of the fluctuation is fetched from the measuring device 1 to the data processing device 3 from time to time and stored as a change in the G value with respect to time (time). In the illustrated example, the time (time) when the G value exceeds the reference value is Tg, and the point on the trajectory at that time is P.
FIG. 3 is a diagram illustrating time information and position information (latitude / longitude) output by the GPS device.
In the present embodiment, the latitude / longitude (position shown as a measurement point in the figure) of the train every three seconds output from the GPS device 2 is taken into the data processing device 3 and stored as position information on the time axis. Further, a relative positional relationship between the measurement point and the reference position is also obtained.
FIG. 4 is a diagram showing a train traveling kilometer with respect to time.
In the GPS device 1, the speed information of the train is obtained and output from the position information with a narrower time interval. By multiplying this by 3 seconds, the travel distance at the measurement point interval in FIG. 3 is obtained. Then, since the reference position is about a kilometer from the first train or the like, if the travel distance for three seconds is obtained, the kilometer of the train traveling with respect to time is obtained from the kilometer of the reference position. By associating the time of FIG. 4 obtained in this way with the time of the measurement data of FIG. 2, the train traveled kilometers at the time (time) Tg at which the G value exceeded the reference value, that is, the G value was less than the reference value. Exceeded point P is required. In this way, it is possible to accurately specify the point P where the G value exceeds the reference value in a very short time.
【The invention's effect】
As described above, according to the present invention, the time between the position information, time information, and speed information from the GPS device, the kilometer relative to the time obtained from the reference position data, and the G value change data with respect to the time of the measuring device is calculated. By doing so, it is possible to accurately and remarkably identify a portion where the G value exceeds the reference value as compared with the related art.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram illustrating a system configuration according to an embodiment.
FIG. 2 is a diagram showing an example of measurement data.
FIG. 3 is a diagram illustrating time information and position information (latitude / longitude) output by a GPS device.
FIG. 4 is a diagram showing a train traveling kilometers with respect to time.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Measuring device, 2 ... GPS device, 3 ... Data processing device, 4 ... Reference position database, 5 ... Output device.

Claims (1)

A measuring device for measuring a time change of the train sway,
A GPS device provided on the train to output position information, time information, and speed information;
A database storing information on a plurality of reference positions on the orbit,
A data processing device to which measurement data from the measurement device, position information from the GPS device, time information, and speed information are input;
The data processing device obtains the travel distance of the train with respect to time based on the position information, time information, speed information from the GPS device and the reference position information stored in the database, and determines the time when the train sway exceeds the reference value. A train sway location detection system using a GPS, wherein a location where the train sway exceeds a reference value is specified in correspondence with the traveled kilometer time.

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