KR20230024717A - System and Method for limiting speed of railroad vehicles in curved sections - Google Patents

Abstract

The present invention relates to a system and method for limiting speed in a curved section of a railroad vehicle, and is capable of overspeeding due to a driver's mistake when driving a railroad vehicle on a curved section of a track, or speeding beyond the speed limit passing through a curve when changing an operating line due to unexpected track maintenance. Driving can be fundamentally prevented, and as a result, derailment of railroad vehicles in curved sections can be prevented, and errors or failures of existing signal systems such as ATC and ATS for vehicle operation control can occur because they can be used by being installed on the railroad cars themselves. Provides a system and method for limiting speed in a curve section of a railway vehicle, which is very effective in preventing derailment accidents due to speeding in a curve section.

Description

System and method for limiting speed of railroad vehicles in curved sections {System and Method for limiting speed of railroad vehicles in curved sections}

The present invention relates to a system and method for limiting speed in a curved section of a railroad vehicle, and more particularly, when a railroad vehicle travels on a curved section of a track, the driving speed is overspeeding beyond the limit speed passing through the curve due to human error such as a driver's mistake. It relates to a system and method for limiting speed in a curved section of a railroad vehicle that can prevent accidents by limiting the

In general, a straight section and a curved section exist in a track on which a railroad vehicle operates.

In particular, since the curve section is largely related to the steering performance or driving safety of the railroad vehicle, studies on the driving of the railroad vehicle in the curved section are being actively conducted.

As such, in the study of active steering control to improve the curve driving performance by actively steering the wheelset to suit the curve radius when driving in the curved section of the railroad vehicle, the work of measuring the curvature radius of the curved section in real time is preceded by priority. It should be.

Regarding means or methods for estimating or measuring the actual radius of curvature of such a curved section, Registration Patent No. 10-1131777 (Reference 1), Registration Patent No. 10-1785413 (Reference 2), etc. have been proposed. .

First, Reference 1 relates to a method for estimating the radius of curvature of a curved section of a railroad car. a relative displacement and relative angle measurement step of measuring a relative displacement in the longitudinal direction between the vehicle body and measuring a relative angle between the vehicle body and the front and rear bogies using the measured relative displacement; A method for estimating the radius of curvature in a curved section of a railway vehicle is proposed, including a step of estimating the radius of curvature in a curved section using the measured relative displacement and relative angle.

In addition, Reference 2 relates to an apparatus and method for estimating the curvature radius of a joint bogie-type railroad vehicle when driving in a curved section, and receives displacement measurements of the front and rear vehicle bodies from displacement sensors installed on one side of the front and rear vehicle bodies of the joint bogie-type railroad vehicle. An apparatus and method for calculating the radius of curvature using the measured amount of displacement between the front and rear vehicle bodies are proposed.

However, all of the methods and devices proposed in the above references use the relative angle and relative displacement between the body and the bogie, which occurs when the railroad vehicle travels on a curved section, or the position data of the center of the bogie, so that the railroad vehicle moves. It is for estimating the driving curvature radius, and it is a curve detection and curvature radius estimation method of an active steering bogie that is being developed to reduce the wear and noise of a joint bogie-type tilting train or wheel to improve speed when driving in a curved section of a track. Although it can be applied and utilized efficiently, no method has been proposed to suppress overspeed and prevent derailment when a railway vehicle travels on such a curved section.

Therefore, when an unexpected situation occurs, such as a human error such as a driver's mistake or a change in the operating track due to unexpected track maintenance while driving a railroad car on a curved section of the track, the railroad car may exceed the speed limit of the curved section. There is a high risk of accidents such as derailment due to speeding because speeding is not restricted.

Reference 1: Registered Patent No. 10-1131777 Reference 2: Registered Patent No. 10-1785413

Therefore, the present invention is to solve these problems, and the present invention provides a system and method for limiting the speed of a railway vehicle in a curved section of a railroad vehicle so that it does not exceed the speed limit for passing the curve of the section when the railroad vehicle travels in a curved section of the track. It has a purpose.

In particular, the present invention controls the driving speed of a rolling stock so that it travels below the speed limit for passing through a curve in the corresponding section even when a human error such as a driver's mistake or a change in operating line due to unexpected track maintenance occurs. An object of the present invention is to provide a system and method for limiting speed in a curved section of a railroad vehicle, which can prevent vehicle derailment in a curved section by inducing safe running of the railroad vehicle by controlling it.

The present invention to solve such a technical problem;

A curve detection unit that extracts curve information when a railroad vehicle travels on a curved section of a track, and a curve passage limit speed calculation unit that calculates a curve passage limit speed according to the curve information extracted through the curve detection unit, and the traveling of the railroad vehicle A speed limit signal to a vehicle speed detection unit that measures speed and a train control unit that controls the operation of a railway vehicle to limit the traveling speed of the railway vehicle to the speed limit or less when the traveling speed of the railway vehicle exceeds the speed limit passing through the curve It provides a system for limiting speed in a curved section of a railway vehicle, characterized in that it includes a vehicle speed determination unit for transmitting.

At this time, the curve detection unit extracts the curvature radius of the curved section of the track as curve information, and the curve passing limit speed calculation unit calculates the curve passing limit speed corresponding to the curvature information of the point where the railroad vehicle is traveling. .

And, the vehicle speed detection unit is characterized in that it is a speed sensor provided in the railway vehicle to detect the traveling speed.

In addition, the vehicle speed determining unit transmits a warning signal to the operation and display panel provided in the railway vehicle cab so that the driver of the railway vehicle can recognize when the driving speed of the railway vehicle is higher than the speed limit for passing the curve, and the train control unit transmits a warning signal to the speed limiter. It is characterized by transmitting a signal.

In addition, the present invention;

A first step of receiving curve information extracted in real time through a curve detection unit when a railway vehicle travels on a curved section of a track; a second step of calculating a speed limit passing through the curve that matches the curve information extracted from the curve detection unit; a third step of detecting a running speed of a running railroad car mounted on the railroad car through a vehicle speed detection unit; a fourth step of comparing whether or not the traveling speed of the railway vehicle measured by the vehicle speed detection unit is equal to or greater than the curve passing limit speed extracted by the curve passing limit speed calculation unit; and a fifth step of transmitting a speed limit signal to the train control unit to lower the traveling speed of the rolling stock when it is determined that the running speed of the rolling stock exceeds the speed limit for passing the curve. A section speed limit method is also provided.

At this time, in the second step, the vehicle speed detection unit is characterized in that it is a speed sensor mounted on a railway vehicle.

In addition, in the fifth step, if the driving speed of the rolling stock exceeds the speed limit for passing the curve, a warning signal is transmitted to the operation and display panel provided in the rolling stock cab so that the driver of the rolling stock can recognize it, and the speed limit signal is sent to the train control unit. It is characterized in that the step of transmitting.

And, after the fifth step, if the driving speed of the railroad car is below the curve passing limit speed, a sixth step of comparing whether or not the operation of the railroad car is terminated and performing the first step if the operation is not terminated; further comprising characterized by

According to the present invention, it is possible to fundamentally prevent overspeeding due to a driver's mistake when a railroad vehicle travels on a curved section of a track, or overspeeding at a speed exceeding the speed limit passing through a curve when an operating track is changed due to unexpected track maintenance, thereby reducing the curve section The derailment of rolling stock at the station can also be prevented.

In addition, the present invention can be installed and used on the railway vehicle itself, so that it can operate independently even when errors or failures occur in existing signal systems such as ATC and ATS for vehicle operation control, thereby preventing derailment accidents due to speeding in curved sections. Very effective for prevention.

1 is a block diagram of a system for limiting speed in a curved section of a railway vehicle according to the present invention;
2 is a control flow chart for limiting speed in a curved section of a railway vehicle according to the present invention.

Hereinafter, the features of a system and method for limiting speed in a curved section of a railway vehicle according to the present invention will be understood by an embodiment described in detail with reference to the accompanying drawings.

Prior to this, the terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventor appropriately uses the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so at the time of this application, they can be replaced. It should be understood that there may be many equivalents and variations.

Referring to FIG. 1, the system for limiting speed in a curve section of a railroad vehicle according to the present invention restricts the railroad vehicle from speeding beyond the speed limit for passing the curve of the section when driving in a curved section of a track, thereby derailing the railroad vehicle in the curved section. It is a system that can prevent the overspeeding of railroad cars in real time in the curved section of the track by being provided in the railroad cars.

As such, the present invention has a curve detection unit 10 that extracts curve information when a railroad vehicle travels on a curved section of a track, and a curve passing limit speed (V _lim ) set according to the curve information extracted through the curve detection unit 10 A curve passing limit speed calculation unit 20 that calculates, a vehicle speed detection unit 30 that measures the traveling speed V of the railroad vehicle, and the traveling speed V of the railroad vehicle measured by the vehicle speed detection unit 30 ) is over the curve passing limit speed (V _lim ) extracted by the curve passing limit speed calculation unit 20, the train controls the operation of the railroad car to limit the running speed of the railroad car to the limit speed (V _lim ) or less and a vehicle speed determination unit 40 that transmits a speed limit signal to the control unit 50.

Hereinafter, the configuration of each part of the present invention will be described in detail.

First of all, the curve detection unit 10 performs a function of detecting the curve of the track and extracting curve information such as the radius of curvature by using various measurement methods using a curvature sensor or the like when the railway vehicle travels on a curved section of the track.

The method of detecting the curve and extracting the radius of curvature when driving in the curved section of the track uses the relative displacement and relative angle between the car body and the bogie, as in the method for estimating the radius of curvature in the curved section of a railroad vehicle in Patent Registration No. 10-1131777. A method of estimating the radius or a method of estimating the radius of curvature by measuring the center position of the bogie, or a joint bogie type as in Patent Registration No. 10-1785413 Apparatus and method for estimating the radius of curvature when driving in a curved section of a railroad car An apparatus and method for calculating a radius of curvature by receiving displacement measurements of the front and rear bodies from displacement sensors installed on one side of the front and rear bodies of a railway vehicle and using the displacement measurements between the front and rear bodies can be used.

Therefore, since the curve detection unit 10 is a configuration that can be configured in various known ways, a detailed description thereof will be omitted below.

On the other hand, the curve passing limit speed calculation unit 20 calculates the curve passing limit speed (V _lim ) that matches the curve information extracted from the curve detection unit 10, and this curve information is the curvature of the point where the railroad vehicle is traveling Using the information, a curve passing limit speed (V _lim ) corresponding to the curvature information is calculated.

At this time, according to the radius of curvature of the curved section of the line, the limit speed for passing the curve is presented for each railway operating institution, and the limit speed for passing the curve (V _lim ) is determined according to the extracted radius of curvature.

Accordingly, the curve passing limit speed calculation unit 20 refers to the curve passing limit speed (V _lim ) information according to a plurality of previously stored curvature radii, and the curve passing limit speed according to the curvature radius of the curve information extracted from the curve detection unit 10 (V _lim ) is calculated.

The speed limit for passing through a curve (V _lim ) is the speed at which a railroad vehicle can travel at its maximum when traveling in a corresponding curved section, and when overspeeding, the railroad vehicle may deviate from the track.

In addition, the vehicle speed detection unit 30 performs a function of detecting the traveling speed V of a running railroad vehicle and utilizes a speed sensor as a speed measuring device mounted on an existing railroad vehicle.

Of course, the device capable of measuring the driving speed may also calculate the speed using the location information of the GPS receiver, and it is obvious that such a configuration also falls within the scope of the present invention.

In addition, the vehicle speed detection unit 30 may receive the running speed V of the railroad vehicle from the train control unit 50 that controls the train without directly receiving speed information from the speed sensor mounted on the existing railroad vehicle. .

On the other hand, the vehicle speed determination unit 40 calculates the traveling speed V of the railway vehicle measured by the vehicle speed detection unit 30 and the curve passing limit speed extracted by the curve passing limit speed calculation unit 20 (V _lim ) , and the vehicle speed determining unit 40 sends a warning signal to the driver 60 of the railroad vehicle when the traveling speed V of the railroad vehicle exceeds the speed limit V _lim passing through the curve, so that the driver In addition to recognizing overspeed, a speed limit signal is transmitted to the train control unit 50.

Of course, when the speed limit signal is input, the train control unit 50 lowers the traveling speed of the railroad car by controlling the running speed of the railroad car to be less than the limit speed V _lim .

In this case, the vehicle speed determining unit 40 calculates the traveling speed V of the railway vehicle measured by the vehicle speed detecting unit 30 and the curve passing limit speed V _lim presented by the curve passing limit speed calculation unit 20 In comparison, if the driving speed V is overspeeding the curve passage limit speed V _lim , a warning signal is transmitted to the driver and a speed limit signal is transmitted to the train control unit 50 to reduce the driving speed of the vehicle to the limit speed V _lim ) performs the function of limiting to the following.

In this case, the vehicle speed determination unit 40 transmits a warning signal to an operation and display panel (not shown) provided in the railway vehicle driver's cab so that the driver 60 of the railway vehicle can recognize the warning, and to the operation and display panel. By outputting such warning information as a warning sound or a warning screen, the driver 60 can recognize or confirm it.

Hereinafter, with reference to FIG. 2, a method for limiting speed in a curved section of a railway vehicle according to the present invention will be described.

First, when the railway vehicle runs on a curved section of the track, the curve detection unit 10 detects the curve using a curvature sensor, etc., and extracts the curvature radius, which is curve information, in real time. (S1)

Then, the curve passing limit speed calculation unit 20 calculates the curve passing limit speed V _lim that matches the curve information extracted from the curve detection unit 10. (S2)

Then, the traveling speed (V) of the running railway vehicle is detected through the speed sensor mounted on the railway vehicle, which is the vehicle speed detection unit 30. (S3)

In addition, the vehicle speed determining unit 40 receives the traveling speed V of the railway vehicle measured by the vehicle speed detecting unit 30 and the curve passing limit speed V _lim extracted from the curve passing limit speed calculation unit 20. It is compared and judged whether the driving speed (V) of the railway vehicle is equal to or greater than the curve passing limit speed (V _lim ) (S4).

In the step (S4), the vehicle speed determination unit 40 transmits a warning signal to the driver 60 of the railroad vehicle when it is determined that the driving speed V of the railroad vehicle is equal to or greater than the curve passing limit speed V _lim , so that the driver In addition to recognizing overspeed, a speed limit signal is transmitted to the train control unit 50 to lower the running speed of the railway vehicle through the train control unit 50 (S5).

On the other hand, in the step S4, the vehicle speed determination unit 40 compares whether the operation of the railroad vehicle is terminated when it is determined that the traveling speed V of the railroad vehicle is equal to or less than the speed limit passing through the curve (V _lim ). (S6)

Whether or not the operation of the step (S6) has ended can be determined by receiving an operation end signal from the train control unit 50, for example. Steps regarding whether or not the driving speed (V) is overspeeding the curve passing limit speed (V _lim ) are repeatedly performed.

Summarizing the overspeed limiting method in the curve section of the railway vehicle described above,

The first step of receiving the curve information extracted in real time through the curve detection unit 10 when the railroad vehicle travels on the curved section of the track, and the first step of calculating the curve passing limit speed that matches the curve information extracted from the curve detection unit 10 Step 2 and Step 3 of detecting the traveling speed of the rolling stock mounted on the rolling stock through the vehicle speed detecting unit 30, and limiting the traveling speed of the rolling stock measured by the vehicle speed detecting unit 30 to pass through the curve A fourth step of comparing whether or not the speed is equal to or higher than the speed limit for passing the curve extracted by the speed calculation unit 20, and a train control unit to lower the speed of the train when it is determined that the speed of the train exceeds the speed limit for passing the curve ( 50) includes a fifth step of transmitting a speed limit signal.

And, in the second step, the vehicle speed detection unit 30 may be formed of a speed sensor mounted on a railway vehicle.

In addition, in the fifth step, a warning signal is transmitted to the operation and display panel provided in the railway vehicle cab so that the driver of the railway vehicle can recognize when the driving speed of the railway vehicle exceeds the speed limit for passing the curve, and the train control unit 50 transmits a warning signal. It may consist of transmitting a speed limit signal.

And, after the fifth step, if the driving speed of the railroad vehicle is below the curve passing limit speed, a sixth step of comparing whether or not the operation of the railroad vehicle has ended and performing the first step if the operation is not ended may be further included. there is.

As above, from the start of the train to the end of the run, overspeeding is detected and judged in real time while driving on the curved section of the track to prevent the train from running at a speed higher than the speed limit. It can be prevented.

In addition, the present invention is an invention for fundamentally preventing derailment accidents due to speeding when driving in a curved section of a railroad car, and can be applied to overall railroad vehicles, and even if applied only to the front car or the rear car in a train, it prevents accidents due to speeding can be used very efficiently.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art can make various modifications and variations without departing from the essential characteristics of the present invention. The protection scope of should be interpreted by the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: curve detection unit 20: curve passage limit speed calculation unit
30: vehicle speed detection unit 40: vehicle speed determination unit
50: train control unit 60: driver

Claims (8)

A curve detection unit that extracts curve information when a railroad vehicle travels on a curved section of a track, and a curve passage limit speed calculation unit that calculates a curve passage limit speed according to the curve information extracted through the curve detection unit, and the traveling of the railroad vehicle A speed limit signal to a vehicle speed detection unit that measures speed and a train control unit that controls the operation of a railway vehicle to limit the traveling speed of the railway vehicle to the speed limit or less when the traveling speed of the railway vehicle exceeds the speed limit passing through the curve A system for limiting speed in a curved section of a railway vehicle, characterized in that it comprises a vehicle speed determination unit for transmitting.
According to claim 1,
The curve detection unit extracts the radius of curvature of the curved section of the line as curve information,
Wherein the curve passing limit speed calculation unit calculates the curve passing limit speed corresponding to the curvature information of the point at which the railroad vehicle is traveling.
According to claim 1,
The vehicle speed detection unit is a speed sensor provided in the railway vehicle and detecting the traveling speed.
According to claim 1,
The vehicle speed determining unit transmits a warning signal to the operation and display panel provided in the railway vehicle driver's cab so that the driver of the railway vehicle can recognize when the driving speed of the railway vehicle is higher than the speed limit passing through the curve, and transmits a speed limit signal to the train control unit. A system for limiting speed in a curved section of a railway vehicle, characterized in that for transmission.
A first step of receiving curve information extracted in real time through a curve detection unit when a railway vehicle travels on a curved section of a track;
a second step of calculating a speed limit passing through the curve that matches the curve information extracted from the curve detection unit;
a third step of detecting a travel speed of a running railroad car mounted on the railroad car through a vehicle speed detection unit;
a fourth step of comparing whether or not the traveling speed of the railway vehicle measured by the vehicle speed detection unit is equal to or greater than the curve passing limit speed extracted by the curve passing limit speed calculation unit; and
and a fifth step of transmitting a speed limit signal to the train control unit to lower the traveling speed of the rolling stock when it is determined that the running speed of the rolling stock exceeds the speed limit for passing the curve. How to limit speed.
According to claim 5,
In the second step, the vehicle speed detection unit is a speed sensor mounted on the railroad vehicle.
According to claim 5,
In the fifth step, if the driving speed of the rolling stock exceeds the speed limit for passing the curve, a warning signal is transmitted to the operation and display panel provided in the rolling stock cab so that the driver of the rolling stock can recognize it, and a speed limit signal is transmitted to the train control unit. A method for limiting speed in a curved section of a railway vehicle, characterized in that the step of doing.
According to claim 5,
and a sixth step of comparing whether or not the operation of the railway vehicle is terminated if the running speed of the railway vehicle after the fifth step is less than or equal to the speed limit passing through the curve, and performing the first step if the operation is not terminated. A method for limiting speed in a curved section of a railroad vehicle.

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