JPH07107245B2 - How to check the track condition - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is intended to quantitatively carry out this in a confirmation vehicle in which the work of a railroad is performed at night by a Shinkansen or the like, and then the state of the railroad is confirmed before the operation of the first train. Regarding the method of checking the orbital condition.

[0002]

2. Description of the Related Art Conventionally, the confirmation of the track condition depends on the subjective judgment such as the visual observation and the physical feeling of the personnel onboard the confirmation vehicle.

[0003]

[Problems to be Solved by the Invention] In the recent plan to improve the speed of commercial trains,
The need has arisen to make the subjective work of sensation quantitative, and to make it objective.

The present invention aims to achieve this.

[0005]

In order to achieve the above object, in the method for checking the orbital state of the present invention ,
While continuously measuring the spatial position of the track on the running vehicle
The original waveform for evaluating the orbital deviation is obtained, and the original waveform is calculated.
Calculate the evaluation value to evaluate the deviation of the trajectory based on the waveform
However, the maximum value of the above evaluation values within a certain length of lot is
The display on the vehicle is determined by determining it as the evaluation representative value of the lot.
It is displayed as an image in b and the evaluation representative value is the management target value.
If it exceeds the limit, an alarm will be issued on the vehicle and
Regarding the lot with the alarm and the lots before and after it,
The evaluation representative value is printed out.

[0006]

According to the orbit state confirmation method of the present invention, first,
A vehicle running on a track continuously measures the spatial position of the track.
Determine the original waveform to measure and evaluate the orbital deviation. example
For example, measuring the spatial position in the vertical direction of the railroad track to determine the height of the track
The original waveform for evaluating can be obtained. Also,
If you measure the spatial position of the track in the left-right direction, the track will go wrong.
The original waveform for evaluating can be obtained. these
The original waveforms of the
Vehicle running using known measuring equipment for acceleration changes etc.
It is possible by continuously obtaining the above. For the present invention
In the method, while obtaining the original waveform in this way,
Calculate the evaluation value to evaluate the deviation of the trajectory based on the waveform
The maximum evaluation value within a lot of a certain length
Image is displayed on the vehicle as a representative evaluation value.
Displayed as a page. Therefore, on the vehicle
Confirm the orbital condition while recognizing the evaluation value as an image
You can Moreover, each lot determined in this way
Whether the evaluation representative value of the vehicle exceeds the management target value
Judgment is made on both sides, and if exceeded, an alarm is issued on the vehicle.
To call attention. Moreover, there was this alarm
For the lot and the lots before and after it,
Lint out. Therefore, the track condition on the vehicle
You can check the evaluation representative value for each lot as an image.
In addition, if the evaluation representative value exceeds the management target value,
This will not be overlooked by an alarm, and
Print out representative evaluation values of
Therefore, the objective numerical value can be confirmed immediately.
And this numerical confirmation is also performed with the numerical values of the lot before and after.
Therefore, it is possible to compare the situation of out of order with the lot before and after.
It is possible to make an objective numerical evaluation while making comparisons. Also,
Track misalignment is a so-called rail track defect
This is a numerical value for its management.
Is required to be expressed as. In this case, one lot
By adopting a style that evaluates with a representative value,
One of the features of the present invention is that data compression is also possible.
Can be said. And one evaluation fee for each lot
Since this is a method of determining table values, determine this representative value.
It suffices to obtain the original waveform of the lot. Yo
Therefore, the above image display does not deviate from the real time.
Since it is performed, the orbital condition can be easily viewed. By using such a method, before the start of business after night work on high-speed trains such as the Shinkansen, its safety and good riding comfort,
Since it depends on the conventional subjective judgment of visual inspection / sensation by the low-speed confirmation vehicle , it can be easily confirmed even when the high-speed confirmation vehicle is operated with objective data.

[0007]

EXAMPLES Examples will be described with reference to the drawings.

FIG. 1 shows a state in which a vertical accelerometer 2 for picking up the position of the top of the rail head relative to the vertical inertial space is attached to the axle box 1 of the confirmation vehicle in order to detect the deviation of the track. It is shown. A similar vertical accelerometer 2'is provided on the axle box 1'at the other end of the same wheel axle for measuring other rails on the same track. On the other hand, in FIG. 2, in order to detect the deviation of the track, the left and right arms 3 that reach the positions facing the mounting rails 8 are provided in the axle box 1 of the confirmation vehicle, and the left and right directions of the rails 8 with respect to the inertial space are provided here. For picking up the position of the eddy current type electromagnetic sensor 4 for picking up the relative position of the tip of the left and right arm 3 and the rail 8, and for left and right for picking up the position of the eddy current type electromagnetic sensor 4 with respect to the inertial space. It shows a state in which the accelerometer 5 is attached.

FIG. 3 shows a method for processing these inputs, and regarding height deviation, vibrations caused by vertical accelerometers 2 and 2'mounted on axle boxes 1 and 1'on both left and right sides of one wheel axle. After amplifying the waveform with an amplifier, the distance pulse generated by the pulse generator 6 of FIG. 1 attached to another axle box is used to perform double integration and double integration within the required spatial frequency range by the filter circuit to obtain a high or low trajectory. Get the original waveform for the deviation. After adjusting this to an accurate waveform through a phase compensation circuit and an output adjustment circuit, it is A / D converted and placed in a computer.

With respect to the deviation, the same processing is performed as for the output of the left and right accelerometers 5 attached to the position of the eddy current electromagnetic sensor 4 when the deviation is high or low. After amplifying the relative waveform between the left and right accelerometers 5 with an amplifier, setting it in the required spatial frequency range with a filter circuit, adjusting it to an accurate waveform through the phase compensation circuit and output adjustment circuit, and then adding Get the original waveform for wandering. Furthermore, this is A / D converted and put in the computer on the car.

In the on-vehicle computer, as shown in FIG. 4, the 1m representative value, which is the maximum value of the 1m section as a lot, is calculated from these original waveforms, and the target value is managed for the time being. Calculate 10m chord and 40m chord,
This is written on the hard disk, and the distance pulse is used to calculate the lot in units of 20m accurately, and the maximum value of the above 10m and 40m string Masaya of the left and right deviations and deviations in this lot. And display these on the screen of the display as representative values. This example is shown in FIG.

Further, when these exceed the target safety management value, an alarm is issued and, at the same time, in order to confirm the state of change in deviation at this location, these values are checked together with the representative values of the lots before and after that. Output to printer. FIG. 6 shows these representative values together with the representative values of the preceding and following lots when this example is exceeded in successive lots.

[0013] About the confirmation section in units of about 50 km, after completion of the work, recorded on the hard disk, the left and right deviations of the height and the deviation of 10 meters of the string Masaya and 40 m
The 1 m representative value of the string Masaya is transferred to a floppy disk, and used for processing such as printing out a graph of the 20 m representative value of each deviation displayed on the vehicle on the ground and displaying the deviation shape of a necessary portion.

When migrating from a hard disk of this typical value of 1 m to a floppy disk, 10
In addition to the 1-m representative value of the m-string and the 40-m-string Masaya, it is also possible to use the 1-m representative value of a more basic original waveform.

In the above example, in order to more accurately obtain the deviation at a position 14 mm from the top surface of the rail head, it is necessary to use an optical rail position detecting device using laser light.

If necessary, it is easy to add an out-of-gauge and out-of-range detection device to this device.

In the case of obtaining the displacement with respect to the inertial space of high and low deviations and deviations, the embodiment has been described here by the method of integrating twice directly from the accelerometer. However, when it is necessary to obtain better accuracy, the spring is used. The method of providing an accelerometer on the upper body, integrating it twice, and adding the relative displacement between the body and the axle box or the sensor for determining the relative displacement between the body and the rail is used. good.

[0018]

Since the present invention is constructed and functions as described above, it has the following effects.

(1) By using the method for checking the track condition according to the present invention, the track condition which could be confirmed only by visual inspection and sensation in the past can be automatically alarmed at a seriously crazy place only by driving the confirmation vehicle. Can be obtained.

(2) By using the method for confirming the orbital state according to the present invention, it is possible to obtain objective numerical information about the orbital state, including those in the lots before and after the drastic deviation.

(3) By using the method for checking the track condition according to the present invention, it is possible to obtain more information than before regarding the check of the track condition even if the speed of the checking vehicle is improved.

[Brief description of drawings]

FIG. 1 is a schematic side view of an accelerometer for detecting height deviation and a pulse generator mounted on a confirmation vehicle.

FIG. 2 is a schematic view of an eddy current electromagnetic sensor and an accelerometer mounting arm attached to an axle box for detecting a deviation.

FIG. 3 is a hardware configuration diagram of a track state confirmation device.

FIG. 4 is an explanatory diagram of processing performed by a computer on the vehicle.

FIG. 5 is a display diagram of 20 m representative values of a 10 m string Masaya and a 40 m string Masaya, which are displayed on the screen of the track condition confirmation device and which are upside down and left and right.

FIG. 6 is an exemplary diagram of output of a management target value excess portion output to a printer of a track state confirmation device.

[Explanation of symbols]

 1, 1'Axis box 2, 2'Up and down accelerometer 3 Left and right arm 4 Eddy current electromagnetic sensor 5 Left and right accelerometer 6 Pulse generator

Claims (1)

[Claims] 1. The spatial position of a track in a vehicle running on a track
Wave for assessing orbital deviation while continuously measuring position
Determine the shape and evaluate the trajectory deviation based on the original waveform
Calculate the evaluation value for
Determine the maximum evaluation value as the evaluation representative value for the lot.
Displayed as an image on the display on the vehicle,
On the vehicle when the evaluation representative value exceeds the management target value
And the lot that had the alarm and before that
A method for confirming a track state, characterized in that the evaluation representative value is printed out for subsequent lots .