JP2008037270A - Mileage conversion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily convert GPS measurement data of a railway vehicle into mileage and obtain the accurate mileage of the railway vehicle even in the middle of a distance post. <P>SOLUTION: This mileage conversion device is provided with track management information DB 26 registering mileage indicating a distance from a starting point to each reference point in a line zone where the railway vehicle is traveled and coordinates in the longitude and latitude coordinate system at each reference point; and a mileage conversion processing part 23 fetching GPS measurement data from a GPS receiver 24 mounted to the railway vehicle and outputting mileage indicating the position of the railway vehicle. The mileage conversion processing part 23 allocates the position of the railway vehicle between the coordinates in the longitude and latitude coordinate system of the two reference points closest to the coordinates in the longitude and latitude coordinate system of the measurement data. Specifically, when a distance from the GPS measurement point to one of the reference points is defined as a and a distance to the other reference point as b, the mileage conversion processing part 23 allocates the position of the railway vehicle in the position of proportional distribution by the distances a, b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a kilometer-distance conversion device that converts GPS (Global Positioning System) positioning data into kilometer that is a distance from a starting point on an orbit.

  Conventionally, various facilities (signs, railroad crossing security facilities, traffic lights, distance posts, and other ground facilities) are installed along the tracks (including railways). These railway facilities are managed and operated at a distance of about a kilometer from a predetermined starting point for each track. On the other hand, an attempt is made to detect the position of a railway vehicle that is traveling on a track with a GPS receiver mounted on the vehicle, and to use the GPS positioning data and the railway equipment in association with driving assistance (for example, Patent Document 1). reference).

  FIG. 8 is a conceptual diagram of a railway vehicle described in Patent Document 1. The railway vehicle 2 traveling on the track 1 is provided with a vehicle position calculation device 3. The vehicle position calculation device 3 is a positioning means for positioning the vehicle position of the railway vehicle 2 using the GPS satellite 4 and a GPS antenna 5 for receiving radio waves emitted from the GPS satellite 4 and the position of which is previously determined. Compared to a case where a GPS satellite is used based on a position correction antenna 7 that receives a radio wave including error information of a GPS signal from a reference station 6 and a radio wave received by the GPS antenna 5 and a radio wave received by the position correction antenna 7. And a GPS receiver 8 for calculating highly precise longitude and latitude coordinate system coordinates (latitude, longitude, altitude).

  Further, the vehicle position calculation device 3 includes a kilometer calculation unit that calculates the position of the railway vehicle 2 from the preset starting point based on the vehicle position information obtained from the GPS receiver 8. As the kilometer calculation means, the on-board processor 9, the map information DB 10 for storing the map information including the position information of the track, and the track management storing the kilometer for each of the plurality of reference points set along the track 1 It includes a track management information DB 11 for storing information (reference kilometer information). The map information DB 10 is a database in which information related to various elements constituting geography is associated with a common map coordinate system. The track management information DB 11 is a database that stores information related to ground facilities for operation management installed along the track 1 in association with “about a kilometer”.

  In the vehicle position calculation device 3 configured as described above, the longitude and latitude coordinate system coordinates of the current vehicle position are measured by the GPS receiver 8 (FIG. 8B), and the background is determined for each ground facility in the trajectory management information DB 11. Since the degree coordinate system coordinate and the kilometer distance are associated with each other, the ground facility nearest to the starting point with respect to the vehicle position and the kilometer distance are detected by comparing the coordinates (FIG. 8 (c)). The vehicle position is calculated by calculating the actual distance Lr (unit: km) along the track from the ground equipment closest to the starting point to the vehicle position, and adding the calculated actual distance Lr to the kilometer of the installation position of the ground equipment. Calculate the kilometer. First, the latitude and longitude coordinate system coordinates of the vehicle position and the longitude and latitude coordinate system coordinates of the installation position of the ground equipment closest to the starting point are respectively converted into a map coordinate system to obtain each position on the map (FIG. 8D ), (E)). Then, the trajectory vector data is read from the trajectory layer of the map information DB 10 (FIG. 8 (f)), and the length Lm along the trajectory 1 from the vehicle position to the nearest ground equipment on the starting point side is calculated (FIG. 8). (G)), the actual distance Lr is calculated from the scale of the map (FIG. 8 (h)). By adding the calculated actual distance Lr to the kilometer of the nearest ground facility on the starting side, the kilometer of the vehicle position is calculated (FIG. 8 (j)). In the case of the figure, the value obtained by adding the actual distance Lr to the distance “67.120 (km)” of the ground equipment 03 nearest to the starting point is the distance of the vehicle position.

  As described above, the latitude and longitude coordinate system coordinates of the current vehicle position are measured by the GPS receiver 8, and the GPS positioning data and the longitude and latitude coordinate system coordinates of the nearest ground facility are converted into map coordinate system coordinates. Then I calculated the distance on the map coordinate system to find the kilometer.

Moreover, there exists a thing using a coordinate and kilometer conversion table as what converts the position of a rail vehicle into kilometer easily (for example, refer patent document 2). The one described in Patent Document 2 has a coordinate / kilometre conversion table that associates distance posts (kilometers) set at regular intervals along the trajectory with the GPS position coordinate values of the distance posts. In addition, the GPS positioning data of the railway vehicle is converted into kilometer of the nearest distance post.
JP 2005-186651 A JP-A-2005-24437

  However, the one described in Patent Document 1 converts the GPS positioning data and the longitude and latitude coordinate system coordinates of the nearest ground facility on the starting point side to the map coordinate system coordinates, and then the nearest ground facility on the starting point side in the map coordinate system. This is complicated processing such as obtaining the distance from the GPS positioning point to the GPS positioning point on the scale. Considering that the current position of the railway vehicle moving at the required speed is converted to kilometer in real time, the process described in Patent Document 1 is complicated, so it is enormous when trying to ensure a sufficient response speed. It is necessary to process such operations at high speed.

  Moreover, since the thing of patent document 2 has converted the GPS positioning data of a rail vehicle into the kilometer of the nearest distance post, when a rail vehicle exists in the middle from one distance post to the next distance post Has the problem of not getting the exact kilometer.

  The present invention has been made in view of the above circumstances, and can easily convert the GPS positioning data of the railway vehicle into kilometres, and the exact kilometer of the railway car even in the middle of the distance post. It is an object of the present invention to provide a kilometer conversion device capable of obtaining

  The kilometer conversion device according to the present invention is configured such that, for each reference point set along the track of the line section where the vehicle travels, the kilometer indicating the distance from the starting point in the line section and the longitude and latitude coordinate system coordinates of each reference point And the vehicle position measurement data represented by the coordinates of the latitude and longitude coordinates from the GPS receiver mounted on the vehicle traveling on the track of the line section, and the vehicle position in the line section is obtained. A kilometer conversion means for outputting a kilometer distance, and the kilometer conversion means takes out the latitude and longitude coordinate system coordinates of the two reference points closest to the longitude and latitude coordinate system coordinates of the positioning data from the database. , The distance from the longitude and latitude coordinate system coordinates of the positioning data to the longitude and latitude coordinate system coordinates of the two reference points, respectively, and the vehicle indicated by the positioning data according to the obtained distance to each reference point Allocation position between the two reference points, and outputs the kilometrage of the assigned location as the vehicle position information.

  According to the kilometer conversion device configured as described above, the position of the positioning data output from the GPS receiver on the longitude and latitude coordinate system and the two reference points closest to the longitude and latitude coordinate system coordinates of the positioning data. Since the vehicle position is allocated between two reference points from the relationship and the kilometer is obtained, the conversion from the latitude / longitude coordinate system coordinates to the map coordinate system coordinates and the distance measurement and scale conversion on the scale map based on the map coordinate system Such a process becomes unnecessary, and the GPS positioning data of the railway vehicle can be easily converted into kilometers.

In the kilometer conversion device, the kilometer conversion means sets the coordinates of the GPS positioning point indicating the positioning data as (X _P , Y _P ) and the coordinates of one reference point on the starting point side as (X _A , Y _A ). , The coordinates of the other reference point are (X _B , Y _B ), and a coefficient t is obtained from these coordinate positions based on the following equation (1):
t = − {(X _A −X _P ) (X _B −X _A ) − (Y _A −Y _P ) (Y _B −Y _A )}
/ {(X _B -X _A ) ² + (Y _B -Y _A ) ² } (1)
Where (X _A -X _P ) is the distance in the x-axis direction between one reference point and the GPS positioning point (X _B -X _A ) is the distance in the x-axis direction between the other reference point and one reference point ( Y _A -Y _P ) is the distance in the y-axis direction between one reference point and the GPS positioning point (Y _B -Y _A ) is the distance in the y-axis direction between the other reference point and one reference point 0 ≦ t ≦ 1.0, the distance between two reference points is L, and from the assigned point assigned between one reference point and the other reference point to one reference point based on the following equation (2) The distance C is obtained.
C = L × t (2)

  Thereby, the GPS positioning point used as a vehicle position can be allocated between two reference points by proportional distribution of each distance from a GPS positioning point to two reference points.

  The driving support system of the present invention takes in vehicle position information expressed in kilometers from the kilometer conversion device, creates driving support information using the vehicle position information expressed in kilometers, and presents it to the vehicle driver. It is characterized by doing.

  Thereby, since driving support information can be created using the vehicle position information expressed in kilometres, it is possible to provide driving support information that is intuitive and easy to grasp for the vehicle driver.

  The vehicle control system of the present invention takes in vehicle position information expressed in kilometres from the kilometer conversion device and the vehicle position information expressed in kilometres as the operation timing of a vehicle device that operates at a specific point in a line section. It is obtained from

  Thereby, the vehicle position information expressed in kilos can be used for the operation timing of the vehicle device.

  The railway line survey portable device of the present invention is a railway line survey portable apparatus carried by an investigator who investigates the situation of the railway line while moving along the railway line, and is represented by coordinates of longitude and latitude coordinates. For each reference point set along the track of the line section where the vehicle travels and the GPS receiver that outputs the measured positioning data, the kilometer indicating the distance from the starting point in the line section and the latitude and longitude coordinates of each reference point A database in which system coordinates are registered, a kilometer conversion means for inputting positioning data output from the GPS receiver and outputting a kilometer indicating a survey position in the line section, and a survey from the kilometer conversion means Railroad line survey status management means for capturing the kilometer information indicating the position, and distinguishing and recording the section moved along the railway line and the section moved away from the railway line by a predetermined distance, The kilometer conversion means takes out the latitude and longitude coordinate system coordinates of the two reference points closest to the longitude and latitude coordinate system coordinates of the positioning data from the database, and uses the two reference points from the longitude and latitude coordinate system coordinates of the positioning data. The distance to the longitude and latitude coordinate system coordinates of each point is obtained, and the survey position indicated by the positioning data is assigned between the two reference points according to the obtained distance to each reference point. It is characterized by outputting the kilometer distance as survey position information.

  According to the mobile device for surveying railway lines configured in this way, the travel route of the investigator can be obtained in a kilometer format, and the section moved along the railway line and moved away from the railway line by a predetermined distance or more. Sections can be recorded separately from each other, and sections that have been confirmed by the survey and sections that have not been confirmed by the survey can be managed in kilometers.

  It is desirable to manage the situation report input from the investigator who is investigating the state of the railway line while moving along the railway line with the investigation position information expressed in kilometers.

  The center device for railroad line survey of the present invention is for the railroad line survey from a portable device for railroad line survey, in which an investigator who investigates the state of the railroad line inputs a report on the status of the railroad line while moving along the railroad line. In a railway line survey center device that receives positioning data and situation reports expressed in the longitude and latitude coordinate system coordinates of the portable device, for each reference point set along the trajectory of the line section where the vehicle travels, A database in which the kilometer indicating the distance from the starting point in the ward and the longitude and latitude coordinate system coordinates of each reference point are registered, and the positioning data received from the mobile device for surveying the railway line, and the survey position in the ward A kilometer conversion means for outputting a kilometer distance indicating the distance, and a kilometer information indicating a survey position from the kilometer distance conversion means, and a predetermined distance from the section moved along the railway line and the railway road line. Railway line survey status management means for distinguishing and recording sections that have moved away from each other, and the kilometer conversion means is the history of the two reference points closest to the latitude and longitude coordinate system coordinates of the positioning data The degree coordinate system coordinates are extracted from the database, the distances from the longitude and latitude coordinate system coordinates of the positioning data to the longitude and latitude coordinate system coordinates of the two reference points are determined, and the distances to the respective reference points thus obtained are determined. The survey position indicated by the positioning data is allocated between the two reference points, and the kilometer of the allocated position is output as the survey position information.

  According to the present invention, the GPS positioning data of a railway vehicle can be easily converted into kilometres, and an accurate kilometer of a railway vehicle can be obtained even in the middle of a distance post.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram of a railway vehicle system to which the kilometer conversion device of the present invention is applied. As shown in the figure, the railway vehicle system according to the present embodiment is mounted on a railway vehicle that travels on a track. A controller 20 having a kilometer conversion function and a driver are provided with the current position of the railway vehicle. A driving support system 21 that performs various driving support such as displaying in kilometres, and a vehicle control system 22 that performs operation control such as speed control are provided.

  The controller 20 includes a kilometer conversion processing unit 23 that executes processing for converting the GPS positioning data into kilometer. The controller 20 is connected to a GPS receiver 24 and a communication module 25 mounted on the railway vehicle. The controller 20 is always supplied with GPS positioning data that represents the current position of the railway vehicle output from the GPS receiver 24 in the coordinates of the latitude and longitude coordinates. The controller 20 communicates with a command center (not shown) via the communication module 25. The controller 20 transmits position information on the railcar side to the command center and is distributed from the command center. Receives information about operations.

  The kilometer conversion processing unit 23 refers to the track management information DB 26 and sets the GPS positioning point on the track center line from the two reference points closest to the current position of the railway vehicle and the GPS positioning point of the railway vehicle. Assign between two reference points and find the kilometer of the assigned position. If there is no error in the GPS positioning data and no error is included in the orbital position information, the GPS positioning point is located on the orbit. However, since errors are actually included in both the GPS positioning data and the trajectory position information, the GPS positioning point may indicate a location deviating from the trajectory (track center line). Therefore, the process of returning the GPS positioning point to the track center line is performed in the kilometer conversion process.

  In the trajectory management information DB 26, a reference point identification number 26a for identifying a reference point, a kilometer 26b indicating a distance from the starting point to each reference point in the line section, and a latitude / longitude coordinate system coordinate 26c at each reference point are registered. It is a database. Signs, railroad crossing security equipment, traffic lights, distance posts, and other ground equipment set along the track of the line are the reference points.

  Next, a principle of converting the GPS positioning point of the railway vehicle between two adjacent reference points and converting the position into kilometer will be described. The distance between the reference points is assumed to be a distance that can be regarded as a straight line in practice, and errors caused by the distance are not accumulated.

  A symbol R shown in FIG. 2 indicates a center line of a railroad track that is a track on which the railcar travels. A railway vehicle travels between a post A and a post B which are distance posts. At this time, it is assumed that the GPS positioning data of the GPS receiver 24 indicates the GPS positioning point P1. It is assumed that the reference points closest to the GPS positioning point P1 are the A post and the B post.

In the present embodiment, the GPS positioning point P1 is rubbed (assigned) at a predetermined position between the A post and the B post in the longitude and latitude coordinate system. In the rectangular coordinate system (x, y), the coordinates of the GPS positioning point P1, A post and B post are GPS positioning point P1 = (X _P , Y _P ), A post ((X _A , Y _A ), B post = (X _B , Y _B ) The coefficient t is obtained from these coordinate positions based on the following equation (1).
t = − {(X _A −X _P ) (X _B −X _A ) − (Y _A −Y _P ) (Y _B −Y _A )}
/ {(X _B -X _A ) ² + (Y _B -Y _A ) ² } (1)
However, (X _A -X _P ) is the distance in the x-axis direction between the A post and the GPS positioning point P 1 (X _B -X _A ) is the distance in the x-axis direction between the B post and the A post (Y _A -Y _P ) Is the distance in the y-axis direction between the A post and the GPS positioning point P1 (Y _B -Y _A ) is the distance in the y-axis direction between the B post and the A post, and when 0 ≦ t ≦ 1.0, Based on 2), the distance C from the starting point P11 allocated between the A post and the B post to the post A from the starting point is obtained.
C = L × t (2)
Where L is the distance between the A post and the B post.
As a result, the GPS positioning point P1 is assigned to the position P11 at a distance C from the A post that is one reference point toward the B post that is the other reference point.
As in the specific example shown in FIG. 2, if the distance of the A post is about 34 k200 m and the distance of the B post is about 34 k300 m, then L = 100 m, and the distance C can be calculated from the equations (1) and (2).
In the above description, the kilometer conversion is performed based on the rectangular coordinate system, but the GPS positioning point and the reference point are shown in the longitude-latitude coordinate system. However, since the distance between two points required for conversion in kilometer is about tens of meters to 100m as an actual value, the error is very large even in the latitude near Japan even if it is calculated by the equation of the longitude and latitude coordinate system. Even if it is small (about 0.03%) and calculated according to the above formulas (1) and (2) from the coordinate values shown in the longitude and latitude coordinate system, there is no practical problem. Therefore, in this specification, the kilometer conversion based on the rectangular coordinate system is regarded as the kilometer conversion in the longitude-latitude coordinate system.

The processing content of the kilometer conversion processing unit 23 in the present embodiment configured as described above will be described in detail.
FIG. 3 is a flowchart showing the processing contents for converting the GPS positioning data into kilometer in the kilometer conversion processing unit 23. The kilometer conversion processing unit 23 takes in GPS positioning data (coordinates of latitude and longitude coordinates) that is the current vehicle position from the GPS receiver 24 by using a predetermined cycle (for example, several ten seconds) or an external request as a trigger (step S1). ). Two reference points that are closest to the longitude and latitude coordinate system coordinates indicated by the captured GPS positioning data are searched from the trajectory management information DB 26 (step S2). Since the longitude and latitude coordinate system coordinates of each reference point are registered in the trajectory management information DB 26, it is possible to search on the longitude and latitude coordinate system without performing coordinate system conversion. As shown in FIG. 2, it is assumed that the A post and the B post are searched as two reference points that can be regarded as a straight line section closest to the longitude and latitude coordinate system coordinates indicated by the GPS positioning data.

  The kilometer conversion processing unit 23 assigns the GPS positioning point P1 between the A post and the B post, and calculates the distance C from the assigned position P11 to the A post (step S3). That is, the coefficient t is calculated from the above formula (1) using the coordinate values of the GPS positioning point P1, the A post and the B post on the longitude and latitude coordinate system. ) To obtain the distance C from the point P11 allocated between the A post and the B post to the post A from the starting point. (Step S4).

  Next, the distance C is added to the kilometer (34 k200 m) of the reference point (A post) on the starting point side in the line section (step S5). As a result, a kilometer (34 k240 m) at the arbitrary position P11 obtained by assigning the GPS positioning data of the vehicle position between the two reference points is obtained. The kilometer thus obtained is output as the kilometer of the vehicle position (step S6).

  The kilometer information of the vehicle position is input to the driving support system 21 and the vehicle control system 22. The driving support system 21 is a system that creates driving support information using kilometer information of the vehicle position and provides information to the driver. FIG. 4 is a diagram illustrating a configuration example of a driving support screen on which the driving support system 21 displays driving support information. On the driving support screen M, the kilometer (near 118 k210 m) supplied from the controller 20 (kilomile conversion processing unit 23) is displayed as the current position information 31. Further, ground equipment near the railway vehicle is taken out from the track management information DB 26 based on the kilometer of the vehicle position. In the track management information DB 26, the ground facilities are managed in about a kilometer, so the peripheral facilities can be easily searched. In FIG. 4, the sign S <b> 1 is installed at a position closest to the first, and then the traffic light S <b> 2 is installed at a position closest to the second. The kilometer information 32 of the sign S1 and the kilometer information 33 of the traffic light S2 are displayed together with the name of the ground equipment. The driving support screen M is provided with an operation screen 34 that displays the own vehicle, the traveling direction, and the ground facilities in the vicinity of the vehicle on the track, and the line area information 35 and the section information 36 are also displayed on the operation screen 34. It is desirable to display.

  Thus, by displaying the current position in kilometres and displaying the surrounding ground facilities in kilometres, the driver can sensibly recognize the distance to the surrounding ground facilities.

  The vehicle control system 22 uses the kilometer of the vehicle position to control any vehicle device at a specific point. For example, a wheel flange lubricator that reduces friction between the wheel flange and the rail at a sharp curve part, a pendulum train actuator that intentionally tilts the vehicle body at a curved part, and an overspeed at a specific point such as a curved part is monitored and warned A vehicle device such as a warning track device that emits a warning signal is operated at a specific point such as a curved part of a track or a speed limit point. Therefore, the distance of about a kilometer of the current position is monitored to detect that the vehicle has reached a specific point, and an appropriate vehicle device is controlled appropriately.

  As described above, according to the present embodiment, two reference points that are close to the GPS positioning point are determined from the GPS positioning data indicating the current position of the railway vehicle, and the GPS positioning points are proportionally distributed between the two reference points. As compared with the method described in Patent Document 1, it can be converted into kilometer much more easily.

  In addition, although the above description demonstrated the case where the kilometer conversion apparatus was mounted on a rail vehicle, you may make it install in facilities other than a rail vehicle, such as a command center. In this case, the controller 20 of the railway vehicle transmits GPS positioning data via the communication module 25 in real time.

(Second Embodiment)
Next, a second embodiment in which the kilometer conversion device according to the present invention is applied to a mobile device for railway track survey will be described.

  First, an example of an outline of railway line survey will be described. Regularly or in the event of an earthquake, in order to investigate the state of the railway line, the investigator moves along the railway line and conducts a survey to confirm the damage situation. The railway lines to be surveyed include terrestrial tracks and viaducts, but here we will mainly explain viaducts. However, the investigation object of the present invention is not limited to the viaduct. For example, the investigator conducts a survey to check the damage status of the viaduct from under the viaduct while moving under the viaduct with a car or the like.

  As shown in FIG. 7, there are generally sections A1 and A2 where side roads exist along the underpass and sections B1 and B2 where no side roads exist. If the investigator wants to check the damage situation within a relatively short time by moving under the viaduct by car, such as when a large-scale earthquake occurs, the situation is investigated for the sections B1 and B2 where there is no side road. It is possible that there is not. As the survey status information, it is necessary to distinguish between the section that has been confirmed and the section that could not be surveyed.

  Here, the position information of the investigator can be easily obtained in the longitude and latitude coordinate system coordinates by using the GPS receiver. However, since the railway track and the viaduct are maintained and managed in kilometres, it is desirable that the survey status information on the ground tracks and viaducts can be managed in kilometres.

  In the second embodiment, the section (section A1, A2 where the side road exists) that the investigator was able to check and the section (section B1, B2 where the side road does not exist) that could not be checked are managed in kilometers. In addition to making it possible, the location of damage on the viaduct can be managed in kilometers.

  FIG. 5 is a schematic functional block diagram of the railway line survey portable device according to the second embodiment. In addition, the same code | symbol is attached | subjected to the same component as the rail vehicle system shown in FIG. 1, and duplication of description is avoided.

  The railway line survey portable device according to the present embodiment is a general portable personal computer in which application software developed for a land line and viaduct survey is installed, and a GPS reception function and a radio communication function It has.

  The railway line survey status management unit 51 is mainly composed of application software developed for surveying the terrestrial tracks and viaducts, and manages the terrestrial tracks and viaduct survey status input by the investigator based on the kilometer. The ground line and viaduct survey status is input to the railway line survey status management unit 51 from the input device 52 composed of a keyboard, a mouse and the like. Then, the railway track survey status management unit 51 displays the ground track and viaduct survey status information that associates the input ground track and viaduct survey status with the calculated kilometer distance on the display 53. The system configuration is such that the ground line and viaduct survey status information is wirelessly communicated from the communication module 25 to the command center and the like so that the command center can check the ground track and viaduct survey status in real time.

  FIG. 6 is a specific example of ground track and viaduct survey status information displayed on the display 53. A distance post 41 set at a predetermined interval with respect to the track 40 represented by a straight line is displayed. In addition, the sections A1, A2,... That have already been confirmed by the investigator along the ground track and the viaduct side road are displayed with thick lines 42a, 42b, 42c corresponding to the distance post 41, and the investigator has not confirmed the investigation. The sections B1, B2,... Are displayed with broken lines 43a and 43b corresponding to the distance posts 41. Further, when some damage is found on the ground line and the viaduct in the sections A1, A2,... That have been checked, the damage status report memos 44a and 44b and the kilometer distances 45a and 45b are displayed. In addition, the current position 46 of the surveyor is displayed together with about a kilometer. Note that the viaduct survey status information shown in FIG. 6 is an example, and can be modified as appropriate according to the application and purpose.

Next, the operation of the second embodiment configured as described above will be described.
The investigator carries the railway line survey portable device, searches for a road along the ground line and the viaduct with a moving means such as an automobile, and moves. At this time, the kilometer conversion processing unit 23 takes in the GPS positioning data from the GPS receiver 24 at a predetermined cycle, executes the same processing as in the first embodiment described above, converts the GPS positioning data into kilometer, and trains Output to the route survey status management unit 51. That is, the current position of the investigator is converted into kilometer from the kilometer conversion processing unit 23 and sequentially input to the railway line survey status management unit 51.

  The investigator investigates the situation of the ground track and viaduct while moving on the side road by car. When it is found that damage has occurred on the ground track and the viaduct, a report memo explaining the damage situation is input from the input device 33. When a report memo is input from the input device 33, the railway line survey status management unit 51 additionally displays the currently input report memo and the kilometer of the current position at the position where the current position is displayed. In this way, the report memo about the damage discovered by the investigator and the kilometer of the damage location are registered in pairs. In FIG. 6, a report memo 44 a such as “a crack has occurred on a pier” is recorded as damage to a viaduct discovered at a point 650 m from the starting point of a certain line section. In addition, a report memo 44b such as “falling concrete piece” is recorded as damage to the viaduct discovered at a point 1 k900 m from the starting point. In each of the report memos 44a and 44b, the locations where the damage has occurred are displayed in kilometers 45a and 45b. Further, the current position 46 is displayed in real time on the same line segment where the report memos 44a and 44b are displayed, and the kilometer of the current position 46 is also displayed. The report notes 44 a and 44 b and the kilometer of the current position 46 are information input from the kilometer conversion processing unit 23.

  Further, when the investigator moves on the side road by the automobile and reaches the end of the side road, the researcher inputs from the input device 52 that it is the end of the survey confirmation section. For example, a survey confirmation section start / end button is provided on the screen of the display 53, and the start / end of the survey confirmation section can be input by pressing this start / end button. The start button is pressed when entering the section A1, A2,... Where the side road exists, and the end button is pressed when the terminal reaches the end of the side road and leaves the side road. When returning to the side road again from the sections B1 and B2 where no side road exists, the start button is pressed.

  When the start button is pressed, the railway line survey status management unit 51 starts drawing thick lines (42a, 42b, 42c) indicating the survey confirmation sections A1, A2,. When the end button is pressed, the line type is changed from a thick line to broken lines (43a, 43b) indicating sections B1, B2,. In this way, the sections (A1, A2,...) That have been confirmed by the survey and the sections (B1, B2,...) That have not been confirmed by the survey are distinguished and displayed by line types such as thick lines and broken lines.

  In addition, the railway line survey status management unit 51 transmits survey status information (including about a kilometer) of each place on the viaduct from the communication module 25 to the command center. The command center manages the survey status of the ground tracks and viaducts based on kilometers.

  Thus, according to the present embodiment, the current position when the investigator carries the railway line survey portable device and searches for the road along the ground line and the viaduct with the moving means such as an automobile is sequentially measured in kilometers. Since it was converted to about, the survey confirmed / unconfirmed section (A1, A2 ..., B1, B2 ...) and the damage location were recorded, so the survey status information of each place on the ground track and viaduct is also about a kilometer Can manage.

  In the above description, the start / end of the survey confirmation section is determined by pressing the start / end button, but the distance (a) from the GPS positioning point to the closest reference point in the kilometer conversion processing unit 23 Compared with a predetermined value (for example, 5 m), it is determined that the distance a exceeds the predetermined value, and it is determined that the vehicle has moved from the side road. When the distance a is within the predetermined value, it is determined that the side road is moving. Anyway. Thus, if it comprises so that distance (a) from the GPS positioning point to the nearest reference point and predetermined value (for example, 5 m) may be compared, operation by an investigator can be reduced.

  It should be noted that the above-described kilometer conversion process and the railway line survey status management based on the kilometer may be performed in a center apparatus such as a command center capable of wireless communication with the railway line survey portable device. The kilometer conversion processing unit 23, the trajectory management information DB 26, and the railway line survey status management unit 51 are arranged in the center device, and the GPS receiver 24, the communication module 25, and the surveyor appropriately input to the railway line survey portable device. The system configuration includes a simple status management unit that manages status reports on tracks and viaducts. The railway line survey portable device always transmits the GPS positioning data from the GPS receiver 24 to the center device, and when the surveyor inputs the status report, the status report is transmitted to the center device. The investigator presses the start button displayed on the screen when entering the side road, and presses the end button when leaving the side road. The pressing information of the start / end button is also transmitted from the railway line survey portable device to the center device. The center device calculates the kilometer of the survey position from the GPS positioning data and the two adjacent reference points as described above, and from the section (A1, A2...) Moved along the ground line and the viaduct and the ground line and the viaduct. The section (B1, B2,...) That has moved away by a predetermined distance or more is distinguished and recorded. When a status report is received, it is managed and recorded in association with a kilometer calculated based on GPS positioning data received at the same time.

  The present invention is not limited to the above-described embodiment and modifications thereof, and various modifications can be made without departing from the spirit of the present invention.

The block diagram of the rail vehicle system which concerns on the 1st Embodiment of this invention Explanatory drawing for demonstrating the kilometer conversion principle in the rail vehicle system of the said 1st Embodiment. Flow chart showing kilometer conversion operation in the above embodiment Configuration diagram of the driving support screen in the above embodiment The block diagram of the portable apparatus for railroad line investigation which concerns on the 2nd Embodiment of this invention The figure which shows the screen structure which displayed the viaduct investigation status information in the portable apparatus for railway track investigation of the said 2nd Embodiment. Explanatory diagram for explaining the outline of the viaduct survey Conceptual diagram for explaining a calculation method in a conventional vehicle position calculation device

Explanation of symbols

  DESCRIPTION OF SYMBOLS 20 ... Controller, 21 ... Driving support system, 22 ... Vehicle control system, 23 ... Kilometer conversion processing part, 24 ... GPS receiver, 25 ... Communication module, 26 ... Trajectory management information DB, M ... Driving support screen, 31 ... Current position information, 40 ... orbit, 41 ... distance post, 42a, 42b, 42c ... survey confirmed section, 43a, 43b ... unchecked section, 44a, 44b ... report memo, 45a, 45b ... about kilometer, 51 ... railway track survey Situation management unit 52 ... input device 53 ... display

Claims (7)

For each reference point set along the track of the line section where the vehicle travels, a database in which the kilometer indicating the distance from the starting point in the line section and the longitude and latitude coordinate system coordinates of each reference point are registered,
Kilometer distance that captures the positioning data of the vehicle position represented by the longitude and latitude coordinate system coordinates from the GPS receiver mounted on the vehicle traveling on the track of the line area, and outputs the distance indicating the vehicle position in the line area Conversion means,
The kilometer conversion means takes out the latitude and longitude coordinate system coordinates of the two reference points closest to the longitude and latitude coordinate system coordinates of the positioning data from the database, and uses the two reference points from the longitude and latitude coordinate system coordinates of the positioning data. The distance of each point to the latitude and longitude coordinate system coordinates is obtained, and the vehicle position indicated by the positioning data is assigned between the two reference points according to the obtained distance to each reference point. The kilometer conversion device characterized in that the kilometer is output as vehicle position information. The kilometer conversion means includes coordinates of a GPS positioning point indicating the positioning data as (X _P , Y _P ), coordinates of one reference point on the origin side (X _A , Y _A ), and coordinates of the other reference point. And (X _B , Y _B ), the coefficient t is obtained from these coordinate positions based on the following equation (1),
t = − {(X _A −X _P ) (X _B −X _A ) − (Y _A −Y _P ) (Y _B −Y _A )}
/ {(X _B -X _A ) ² + (Y _B -Y _A ) ² } (1)
Where (X _A -X _P ) is the distance in the x-axis direction between one reference point and the GPS positioning point (X _B -X _A ) is the distance in the x-axis direction between the other reference point and one reference point ( Y _A -Y _P ) is the distance in the y-axis direction between one reference point and the GPS positioning point (Y _B -Y _A ) is the distance in the y-axis direction between the other reference point and one reference point 0 ≦ t ≦ 1.0, the distance between two reference points is L, and from the assigned point assigned between one reference point and the other reference point to one reference point based on the following equation (2) The distance conversion device according to claim 1, wherein the distance C is calculated.
C = L × t (2)   The vehicle position information expressed in kilometers is taken from the kilometer conversion device according to claim 1 or 2, and driving support information is created using the vehicle position information expressed in kilometers and presented to the vehicle driver. Driving support system.   The vehicle position information represented by the kilometer as the operation timing of the vehicle device that takes in the vehicle position information represented by the kilometer from the kilometer conversion device according to claim 1 or 2 and operates at a specific point in the line section. A vehicle control system obtained from the above. A mobile device for surveying railway lines carried by an investigator who investigates the status of the railway line while moving along the railway line,
A GPS receiver that outputs positioning data expressed in coordinates of longitude and latitude coordinates;
For each reference point set along the track of the line section where the vehicle travels, a database in which the kilometer indicating the distance from the starting point in the line section and the longitude and latitude coordinate system coordinates of each reference point are registered,
A kilometer conversion means for inputting the positioning data output from the GPS receiver and outputting the kilometer indicating the survey position in the line section;
Railway route survey status management means that captures kilometer information indicating the survey position from the kilometer conversion means, and distinguishes and records a section that has moved along the railway line and a section that has moved away from the railway line by a predetermined distance or more. And comprising
The kilometer conversion means takes out the latitude and longitude coordinate system coordinates of the two reference points closest to the longitude and latitude coordinate system coordinates of the positioning data from the database, and uses the two reference points from the longitude and latitude coordinate system coordinates of the positioning data. The distance to the longitude and latitude coordinate system coordinates of each point is obtained, and the survey position indicated by the positioning data is assigned between the two reference points according to the obtained distance to each reference point. A mobile device for surveying railway lines, characterized in that a kilometer is output as survey position information.   The railway line survey status management means manages a status report input from an investigator investigating the status of the railway line while moving along the railway line, using survey position information expressed in kilometers. The mobile device for railway line survey according to claim 5. An investigator who investigates the status of the railway line while moving along the railway line is represented by the coordinates of the latitude and longitude coordinate system of the portable apparatus for surveying the railway line from the portable apparatus for surveying the railway line that inputs the status report of the railway line. In the railway line survey center device that receives the positioning data and the status report,
For each reference point set along the track of the line section where the vehicle travels, a database in which the kilometer indicating the distance from the starting point in the line section and the longitude and latitude coordinate system coordinates of each reference point are registered,
Kilometer distance converting means for inputting the positioning data received from the railway line survey portable device and outputting the kilometer indicating the survey position in the line section;
Railway route survey status management means that captures kilometer information indicating the survey position from the kilometer conversion means, and distinguishes and records a section that has moved along the railway line and a section that has moved away from the railway line by a predetermined distance or more. And comprising
The kilometer conversion means takes out the latitude and longitude coordinate system coordinates of the two reference points closest to the longitude and latitude coordinate system coordinates of the positioning data from the database, and uses the two reference points from the longitude and latitude coordinate system coordinates of the positioning data. The distance to the longitude and latitude coordinate system coordinates of each point is obtained, and the survey position indicated by the positioning data is assigned between the two reference points according to the obtained distance to each reference point. A railway railway line survey center device characterized in that a kilometer is output as survey position information.

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