JPH1062164A - Measurement method of separation distance between two adjacent tracks - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a measuring and inspection method in which the isolation distance between two tracks is measured by making use of a track inspection and measuring vehicle so as to inspect whether the isolation distance is good or not. SOLUTION: Measuring optical systems 4A, 4B each of which is composed of a projector 41 and of two image-receiving cameras 42a, 42b and a data collection device 5 which is arranged inside a vehicle body 31 at a track inspection and measuring vehicle 3 are installed on both the right and left sides of the vehicle body 31 at the track inspection and measuring vehicle 3. A ground processing device 6 which is composed of an image processing part 61 and of a data processing part 62 is installed on the ground. While the track inspection and measuring vehicle 3 is being run, a slit light belt Lr with which an adjacent track 1B is irradiated is imaged by both image-receiving cameras 42a, 42b, their respective images are collected, their image signals are processed by the ground processing device 6, an isolation distance in the rocking state of the vehicle body 31 is computed, and, when the isolation distance is not good, data on a running distance which specifies a bad point is added to data on the isolation distance so as to be output.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring a separation distance between two orbits adjacent to each other and checking whether or not the distance is right or wrong.

[0002]

2. Description of the Related Art Two or more tracks are laid in parallel in a station yard of a double track section or a single track section of a railway track, and a train or a vehicle may run on each track at the same time. If any of the trains touch each other, a serious accident will occur, so the tracks are separated by a standard separation distance or more. FIG. 5 shows a right-angle cross section of two adjacent tracks 1A and 1B. (a) is a case of a straight section, and both tracks 1A and 1B are composed of a roadbed 1a raised on a horizontal roadbed B, a sleeper 1b arranged thereon, and two left and right tracks.
The tracks 1A and 1B are horizontal and the same height. D ₁ both rails 1c shown, 1d shows an interval (called gauge) of, respectively, with the reference size by such as the well-known narrow gauge or broad gauge is defined. Further, D ₂ represents both track 1A, 1B horizontal distance between the center point p ₁ and p ₂ of the gauge D ₁ of the, which is the separation distance between adjacent second track. Separation distance D ₂ is also a reference value is defined, if D ₂ is narrow than the reference value, the train 2A traveling both track 1A, a 1B, there is a risk that 2B are in contact with each other. FIG. 5 (b) shows the case of a curved section,
The two tracks 1A, 1B are laid inclining with respect to the roadbed B, and the rails 1c, 1d are provided with a height difference (kant). However, the center points p ₁ and p ₂ of the _two are assumed to be the same height, and that their horizontal distance is the separation distance D ₂
This is the same as in the case of the straight section.

[0003]

In the case of JR, etc.,
Strives to ensure safety of train operation by keeping the separation distance D ₂ reference value or more to the provision of each orbit. However, due to the orbital change and disaster recovery work performed in the course of a long history, the separation distance D
There is a place where ₂ is narrower than the reference value, and there are cases of contact accidents caused by this. In recent years, train speeds have increased, and vehicle sway tends to be larger than before. If the sway is large, the risk of a collision accident is high,
The separation distance D ₂ of each track was measured again be examined the propriety are needed. However, it is not easy to manually perform the re-measurement and inspection on the trajectory of each line section over a wide range, and an efficient measurement method for quickly performing the re-measurement and inspection is desirable. Now, both rails 1c and 1d of the track 1 are
May each height and gauge D ₁ is changed deviated by various causes, in order to develop them as a reference value, to deploy the trajectory Kensokusha at a predetermined position, in operating the train moderate speed After traveling, the state of the track is measured during traveling to check the quality of the track. The track inspection car is equipped with a device that detects the movement of its own vehicle body and a device that calculates the distance traveled.If such a track inspection car is used, the separation distance can be measured quickly. Possible and efficient. The present invention has been made in view of the above, and it is an object of the present invention to provide a measurement and inspection method for measuring a separation distance between adjacent tracks by using a track inspection vehicle and checking whether or not the separation is possible.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a method for measuring and measuring a separation distance which achieves the above-mentioned object, wherein the separation distance between a self-track on which a track inspection vehicle runs and an adjacent track adjacent to the self-track is determined. The measurement target. A projector that is arranged on each of the left and right sides of the body of the track inspection car and projects a slit light band in a direction perpendicular to the adjacent track, and is arranged symmetrically with the same inclination angle to the slit light band A measurement optical system including two image receiving cameras and a data recording device disposed in a vehicle body are provided, and a ground processing device including an image processing unit and a data processing unit is provided on the ground. (1) While the track inspection car is running, the slit light band illuminating the adjacent track is imaged at appropriate time intervals by two image receiving cameras by the projector of the measuring optical system on the adjacent track side, and both image receiving cameras In response to the image signal to be output, the sway detection device and the mileage calculation device mounted on the track inspection vehicle sequentially output, respectively, the left and right sway data of the vehicle body and the mileage data of the track inspection vehicle in parallel. In addition, it is recorded on the data recording device. (2) In the ground processing device, the recorded image signals of the two image-receiving cameras are image-processed by the image processing unit, and the side of the head of the rail on the track inspection vehicle side of the adjacent track is extracted. By the processing of the data processing unit, the extracted oblique distance between the side surface of the head and the receiving camera, and the horizontal distance with respect to the oblique distance are calculated by correcting with the recorded left and right sway data of the vehicle body. The horizontal distance between the trajectory and the center of the trajectory of the self trajectory is calculated by correcting the horizontal sway data. The calculated horizontal distances are added to each other, and a half of the gauge is added. The horizontal distance between the center of the orbit of the own orbit and the center of the adjacent track is calculated as a separation distance. The calculated separation distance is compared with a preset limit value to determine whether or not the distance can be determined. When the distance cannot be determined, the recorded travel distance data is added to the separated distance data and output. In the above, distance data of the start and end points of the section to be measured from the traveling reference point and position information indicating an adjacent trajectory on the left or right side of the own trajectory are set in advance for the data processing / recording device, With reference to the distance data of the start and end points, the section to be measured is selected by the traveling distance data sequentially output by the traveling distance calculation device, and the measuring optical system on the adjacent track side is selected by the position information, and The image signals of both receiving cameras for the adjacent tracks are recorded in the data processing / recording device.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above-mentioned separation distance measuring and inspecting method, the measuring optical systems respectively arranged on the right and left sides of the body of the track inspection vehicle are arranged such that their light projectors make the slit light band perpendicular to the adjacent track. , And the two receiving cameras are arranged symmetrically at the same inclination angle with respect to the slit light band, and image the slit light band irradiated on the adjacent orbit in an oblique direction. The data processing / recording device installed in the vehicle body records the image signals from both receiving cameras, etc., and the ground processing device is installed at an appropriate place on the ground. The image processing unit performs image processing, and the data processing unit performs data processing. Perform each processing. The slit beam illuminated on the adjacent track is imaged at appropriate time intervals by two receiving cameras while the track inspection car is running, and the image signal output from each is mounted on the track inspection car. The left and right sway data of the vehicle body and the mileage data of the track inspection vehicle, which are sequentially output by the sway detection device and the mileage calculation device, respectively, are added in parallel and recorded in the data processing / recording device. In the ground processing apparatus, the image processing unit performs image processing on the recorded image signals of the two image receiving cameras to extract the side surface of the head of the rail on the track inspection vehicle side of the adjacent track. By the processing of the data processing unit, the extracted oblique distance between the side surface of the head and the receiving camera, and the horizontal distance with respect to the oblique distance are calculated by correcting with the recorded left and right sway data of the vehicle body. The horizontal distance between the trajectory and the center of the trajectory of the self trajectory is calculated by correcting the horizontal sway data. The calculated horizontal distances are added, and the half distance between the gauges is further added to calculate the horizontal distance between the center of the orbit of the own orbit and the orbital center of the adjacent orbit. This is the separation distance. The separation distance is compared with a preset limit value to determine whether or not the separation distance is acceptable. If the separation distance is not possible, the separation distance data is output by adding the recorded traveling distance data to the output, and the added traveling distance is output. The location where the separation distance is impossible is specified by the data. In the above, the data processing / recording device refers to the preset distance data of the start and end points of the measured section, selects the measured section based on the traveling distance data from the traveling distance calculation apparatus, and selects the adjacent section based on the position information. Since the side on which the trajectory exists is known, the measurement optical system on this side (if there are adjacent trajectories on both sides, both measurement optical systems on both sides) are selected, and only the image signal for the adjacent trajectory in the measured section is recorded, Image signals for other sections are not recorded. In this way, the recording of the image signal is efficiently performed without waste, and therefore, the ground processing device is also processed only in the section to be measured, and thus the efficiency is improved.

[0006]

1 to 4 show an embodiment of the present invention. FIG. 1 is a layout diagram of a measuring optical system 4, a data processing / recording device 5, and a ground processing device 6, and FIG. FIG. 3 is an explanatory diagram of a method of measuring a separation distance, and FIG. 4 is an explanatory diagram of an analysis of a position change of each part due to a lateral vibration of a vehicle body and a correction method for the vibration. is there.

In FIG. 1, a track inspection car 3 has a self-track 1
A runs on A, and there is an adjacent track 1B on the right side thereof. For convenience, both rails of the adjacent track 1B are represented by 1c 'and 1d'. The body 31 of the track inspection car 3 is provided with measurement optical systems 4B and 4A on both left and right sides thereof, and corresponds to adjacent tracks on both left and right sides. A data processing / recording device 5 is disposed on a floor 311 of the vehicle body 31, and a ground processing device 6 including an image processing unit 61 and a data processing unit 62 is disposed at an appropriate place on the ground. The data processing / recording device 5 is set in advance with distance data of the start and end points of the section to be measured from the traveling reference point and position information indicating an adjacent trajectory on the left or right side of the own trajectory. advance to the data processing unit 62 of the 6, the limit value for the separation distance D ₂ is set. Both measuring optical systems 4A and 4B are composed of a projector 41 and two image receiving cameras 42a and 42b.
Projector 41 is perpendicular slit light band L _T to the adjacent track 1B, projecting to a suitable range before and after the rail 1c '. Two image-receiving cameras 41a, 42b may form a same angle phi ₁ with respect to the slit light band L _T for each optical axis in a horizontal plane, the body 31
Are set symmetrically with respect to the floor surface 311 at an angle φ _2, and their optical axes intersect with the rail 1 c ′ when the adjacent track 1 B is at the reference separation distance D ₂ , and the rail 1 c ′ and their respectively the imaged slit light band L _T irradiation before and after. The rail 1c 'has a top surface (tread surface) 11 of the head, a side surface 12 of the head, a side surface 13 of the middle part,
There is the base 14, the right portion of the top surface 11 is not imaged since been a smooth by the wheel regularly reflected slit light band L _T.
In contrast, the left part of the top surface 11 shown in heavy black line, the head side 12, intermediate side face 13, since the base portion 14 is generally rusted, slit light band L _T is clearly imaged. It also is imaged sleepers 1b and the track bed 1a be reflected slit light band L _T randomly. Here, the upper end of the side surface 12 of the head of the rail 1c 'is a measurement point on the track side.

In FIG. 2, a sway measuring device 7 mounted on a track inspection vehicle 3 includes a tilt angle detecting section 71 and a horizontal displacement detecting section 72.
Consisting of The tilt angle detecting unit 71 includes two vertical interval detecting sensors 711a and 711b and a tilt angle calculating circuit 712, and detects a right and left tilt angle θ of the vehicle body 31 with respect to the bogie 32. The horizontal displacement detector 72 is provided at the position shown in the figure, and detects the horizontal displacement Δd of the vehicle body 31 with respect to the bogie 32. The traveling distance calculating device 8
Is a pulse generator 81 directly connected to the axle and a distance calculation circuit 82
The traveling distance of the track inspection vehicle 3 from the traveling reference point is calculated. The left-right inclination angle θ, the horizontal displacement amount Δd, and the traveling distance are respectively detected or calculated during traveling of the track inspection vehicle 3 and are sequentially output.

[0009] In FIG. 3 (a), during running of the track Kensokusha 3, a slit light band L _T than the projector 41 is projected on the front and back and a point Q rails 1c ', 2 pieces of picture camera 42a,
42b images this at appropriate time intervals. During traveling, the data processing / recording device 5 refers to the distance data at the set start and end points of the measured section, and calculates the traveling distance calculation device 8.
The section to be measured is selected based on the travel distance data, and the position information is referred to, for example, the measurement optical system 4A on the adjacent track 1B side is selected, and the image signals of the two receiving cameras 42a and 42b are recorded. At the same time, the amount of sway data and the mileage data output by the sway measuring device 7 and the mileage calculating device 8 are recorded in parallel. (B) in Fig. 2 (b) shows the receiving camera 42.
The image Q is located on the right side of the optical axis of the image receiving camera 41a (the lower side in (a)), and thus the image is shifted to the right with respect to the center line C of the screen. The image of the image receiving camera 42b shown in (b) is deviated to the left, and the amount of these deviations corresponds to the displacement distance between the image receiving camera 42 and the side surface 12 of the head. Now, assume that the vehicle body 31 does not shake, and the image processing unit 61 of the ground processing device 6
By processing both of the above recorded images, the respective head side surfaces 12 are shifted left and right so as to coincide with the center line C, and when the two are AND-combined, the head side surfaces 12 as shown in FIG. Only the extracted image is obtained. Data processing unit 62
In processes to detect the shift amount, the diagonal distance d ₁ of the image receiving camera 42 and the head side 12 shown in FIG. (A) it will be obtained. Also by obtaining the address of the upper end q of the head side surface 12, and the reflected light L _R of the floor 311 and the point Q 'are Introduction, further, the angle phi _2' angle phi ₂ forming in the vertical plane said and By applying the solid triangle method to the angle φ ₁ in the horizontal plane of
_The horizontal distance d ₂ is obtained from ₁ . The horizontal distance d ₁ (in the case of no shaking) between the orbit center p ₁ of the self-orbit 1A and the image receiving camera 42 is measured or calculated in advance,
When adding ₁ of a 1/2 horizontal distance d _2, both track 1A when the vehicle 31 is not upset, separation distance D ₂ of 1B is calculated.

Next, referring to FIG. 4, a correction method when the vehicle body 31 shakes will be described. In FIG. 4 (a), the self-orbit 1A
It is in the curved section, and is inclined at an angle theta ₁ to the left.
On the other hand, the sway of the vehicle body 31 is broken down into a horizontal displacement of the horizontal center point O of the floor 311 and a horizontal rotation of the vehicle body 31 about the center point O as a center of rotation. Figure (a) shows the center point O is only horizontal displacement Δd right at some point, by rotating the further angle theta ₂ only clockwise, showing a state where the center point O is displaced to the position of the O '.
In this state, the angle phi ₂ 'of the reflected light L _R, the angle (θ ₂ -θ ₁₎ only direction changes. Since the angle θ ₂ is calculated by the inclination angle detection unit 71, if θ ₁ is known, the change angle (θ ₂ −θ ₁ ) is known, and this is added to the angle φ ₂ ′ to receive the image in the sway state. The oblique distance d ₁ ′ between the camera 42 and the head side surface 12 is calculated, and the horizontal distance d ₂ ′ with respect to this is calculated. In contrast, since the changes raceway center p ₁ and the image receiving camera 42 Mari horizontal distance d ₃ by upset it is necessary to correct this, explaining the correction method by (b). In FIG. 4B, an XY coordinate system having a center point O (x ₀ , y ₀ ) of the floor surface 311 when not oscillating as an origin is used. Coordinates (x _P , y _P ) of the orbit center p _{1 with} respect to the center point O;
The coordinate value (x ₁ , y ₁ ) of the measurement center point O ₁ of the image receiving camera 42 and the distance L between the origin O and the measurement center point O ₁ can be calculated by actual measurement or from a layout diagram. Due to the oscillation of the body 31,
The center point O is at O ′ (x ₀ ′, y ₀ ′), and the measurement center point O ₁ is at O ′ (x ₀ ′, y ₀ ′).
_{1 '(x 1', y} 1 ') move respectively. This coordinate value (x
₁ ', y _1') can be calculated by the inclination angle theta ₂ and the distance L between the horizontal displacement [Delta] d. When (x ₁ ′ −x ₀ ) is obtained from this, this is the amount of horizontal displacement of the image receiving camera 42 due to shaking, and the horizontal distance d ₃ is corrected by using this as a correction amount, thereby obtaining the separation distance D in the shaking state. ₂ is calculated.

The separation distance D ₂ in the oscillating state calculated as described above is compared with a limit value set in the data processing section 62. The recorded traveling distance data is added and output. The image processing method of the image signal and the correction method for the fluctuation of the separation distance are merely examples, and there may be different methods.
It goes without saying that the present invention is included in the present invention as long as the method falls within the described range.

[0012]

As described above, in the separation distance measuring and inspecting method according to the present invention, a track inspection vehicle is used to correct the amount of vibration of a vehicle body caused by running, thereby obtaining a separation distance between a self-track and an adjacent track. Is quickly measured and further compared with a limit value to determine whether or not it is possible, and when it is not possible, mileage data specifying the location is added and output, and by selecting and recording an image signal An efficient method of image processing and the like are considered, and there is a great effect that contributes to the efficiency of the measurement and inspection of the separation distance for a large number of tracks laid over a wide range.

[Brief description of the drawings]

FIG. 1 is a layout diagram of a measurement optical system, a data processing / recording device, and a ground processing device.

FIG. 2 is a schematic configuration diagram of a sway measurement device and a travel distance calculation device.

FIG. 3 is an explanatory view of a method of measuring a separation distance, in which (a) is an explanatory view of a measurement state of a track inspection vehicle, (b) and
(c) is an explanatory view of a measurement image.

FIG. 4 is an explanatory diagram of an analysis of a change in position of each part due to a vibration of a vehicle body and a correction method for the vibration, and FIG.
Is an explanatory view of a vehicle body displacement, and (b) is an explanatory view of the displacement relationship.

FIGS. 5A and 5B are cross-sectional views of two adjacent tracks at right angles. FIG. 5A is an explanatory diagram for a straight section, and FIG. 5B is an explanatory diagram for a curved section.

[Explanation of symbols]

1A: track or self-track, 1B: track or adjacent track, 1a: track bed, 1b: sleeper, 1c, 1d: rail, 11 ...
Rail treads, 12 ... head side, 13 ... middle side, 14 ... base, 2A, 2B ... train, 3 ... track inspection car, 31 ... body, 31
1 ... floor surface of vehicle body, 32 ... trolley, 4, 4A, 4B ... measuring optical system, 41 ... projector, 42, 42a, 42b ... receiving camera, 5 ... data processing / recording device, 6 ... ground processing device, 61 ... Image processing unit, 62: data processing unit, 7: sway measurement device, 71: inclination angle calculation unit, 72: horizontal displacement detection unit, 8: travel distance calculation device.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication location G01B 21/16 G01B 21/16 21/22 21/22 G06T 1/00 G06F 15/62 380 (72 ) Inventor Toyohiko Yamada 1-4-1 Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture Inside Tokai Passenger Railway Co., Ltd. Inside (72) Inventor Yasuo Takenaka 3-16-3 Higashi, Shibuya-ku, Tokyo Hitachi Electronics Engineering Co., Ltd. (72) Inventor Ryoichi Tamura 3-16-3 Higashi, Shibuya-ku, Tokyo Hitachi Electronics Engineering Co., Ltd. (72) Inventor Nobuyuki Iizuka 3-16-3 Higashi, Shibuya-ku, Tokyo Inside Hitachi Electronics Engineering Co., Ltd.

Claims (2)

[Claims] 1. A distance between a self-track on which a track inspection vehicle runs and an adjacent track adjacent to the self-track is measured.
A projector which is arranged on each of the left and right sides of the vehicle body of the track inspection vehicle and projects a slit light band in a direction perpendicular to the adjacent track, and symmetrically forming the same inclination angle with respect to the slit light band. A measuring optical system including two arranged image receiving cameras and a data processing / recording device disposed in the vehicle body, and a ground processing device including an image processing unit and a data processing unit provided on the ground; (1) While the track inspection vehicle is running, the slit light band illuminating the adjacent track is imaged at appropriate time intervals by the two image-receiving cameras by the projector of the measuring optical system on the adjacent track side. The left and right sway data of the vehicle body and the trajectory inspection are output sequentially by a sway detection device and a mileage calculation device provided in the trajectory inspection vehicle in response to the image signals output by the two receiving cameras. In parallel with vehicle mileage data In addition, the data is recorded in the data processing / recording device. (2) In the ground processing device, the recorded image signals of the two receiving cameras are image-processed by the image processing unit, and the trajectory detection of the adjacent trajectory is performed. The side face of the head of the rail on the vehicle measurement side is extracted, and by the processing of the data processing unit, the oblique distance between the extracted head side and the image receiving camera and the horizontal distance with respect to the oblique distance are recorded. The horizontal distance between the receiving camera and the center of the trajectory of the self-track is calculated and corrected using the horizontal sway data, and the calculated horizontal distances are calculated. And then add 1/2 of the gauge,
The horizontal distance between the center of the orbit of the self-orbit and the adjacent orbit is calculated as the separation distance, and the calculated separation distance is compared with a preset limit value to determine whether or not it is possible. The recorded distance data is added to the distance data and output.
Orbit separation distance measurement inspection method. 2. The data processing / recording apparatus according to claim 1,
Distance data of the start and end points of the measured section from the travel reference point;
Position information indicating the adjacent trajectory on the left or right side with respect to the own trajectory is set, and by referring to the distance data at the start and end points, the travel distance data sequentially output by the mileage calculation device is used to determine the position of the vehicle. A measuring section is selected, and a measuring optical system on the side of the adjacent track is selected based on the position information, and the image signals of the two receiving cameras for the adjacent track of the section to be measured are recorded in the data processing / recording apparatus. 2. The method for measuring and measuring a separation distance between two adjacent tracks according to claim 1, wherein: