KR20090085214A - System and method to monitor a rail - Google Patents
System and method to monitor a rail Download PDFInfo
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- KR20090085214A KR20090085214A KR1020080010995A KR20080010995A KR20090085214A KR 20090085214 A KR20090085214 A KR 20090085214A KR 1020080010995 A KR1020080010995 A KR 1020080010995A KR 20080010995 A KR20080010995 A KR 20080010995A KR 20090085214 A KR20090085214 A KR 20090085214A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 130
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
- B61K9/10—Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0018—Communication with or on the vehicle or train
- B61L15/0027—Radio-based, e.g. using GSM-R
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/042—Track changes detection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/042—Track changes detection
- B61L23/045—Rail wear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The present invention relates to a "rail monitoring system and method" for monitoring a rail condition, and more particularly, comprising: an imaging unit comprising one or more thermal imaging cameras to photograph a thermal image of a rail temperature distribution after a train passes; An image processor analyzing a thermal image of a rail temperature distribution photographed by the image photographing unit; A position detecting unit detecting a rail detecting position; An operation switch unit comprising one or more switches operated by a user; A display alarm unit which shows monitoring results such as a rail state, a detection result, and a detection position; A monitoring database unit for storing the rail monitoring result; And controlling the operation of the image photographing unit, the image processing unit, the position detecting unit, the operation switch unit, the display alarm unit, and the monitoring database unit to detect the rail state from the image of the rail temperature distribution after the train has passed, and monitoring results. And a control unit for controlling to make a database.
In particular, the present invention analyzes the temperature distribution of the rails raised due to the passing of the train by taking a thermal image of the temperature distribution of the rail just after the train running at a commercial running speed, and checks whether there is an abnormality or gap between the rails. Rail detection by detecting and displaying the monitoring result along with the location information and making a database and sending a signal to the train operation system or the central control system when the rail condition is considered to be extremely dangerous. It is possible to prevent accidents caused by the accident, to facilitate the maintenance and management of the rail and to improve the detection efficiency.
Description
The present invention relates to a "rail monitoring system and method" for monitoring rail status, and more particularly, to operate a train at a commercial driving speed and obtain a thermal image of the rail temperature distribution after the train passes to check the temperature and abnormality of the rail. Monitoring and database the monitoring results with the location information, and if the rail status is considered to be dangerous, by notifying subsequent trains indicating the signal, to prevent accidents due to rail abnormality, maintenance and maintenance of the rail This is to facilitate management.
In describing the present specification, the train driving control device is ATP (AUTOMATIC TRAIN PROTECTOR), ATC (AUTOMATIC TRAIN CONTROL SYSTEM), ATO (AUTOMATIC TRAIN OPERATING SYSTEM: Train automatic driving device). ) And TCU (TRAIN CONTROL UNIT). Same as below.
As is well known, trains are a mass transportation mode where high safety must be ensured as a top priority, and many devices have been continuously developed to secure the safety of trains and passengers, improve operating efficiency and improve driving convenience.
Train operation control devices such as ATP, ATC, ATO, etc. are representative devices to secure the safety of trains, increase the operating efficiency, and improve driving convenience.
Such a train operation control device is a device that secures the safety of the train by detecting the occupation of the track of the preceding train and controls the operation of the train, and further enables unmanned automatic operation by exchanging information on the train operation.
As technology advances further, safety becomes more important as the train speeds up, the number of trips increases, and passenger traffic increases, and the concept of safety has advanced from safety to the train itself to safety around the train.
Safety on the rails on which trains run directly is an important safety factor that causes major disasters such as train derailment and overturning in the event of an accident.
The safety check on these rails is performed using a rail flaw detector or a rail flawless vehicle.
The rail flaw detector is a device that allows a skilled worker to move along a rail and directly detects a defect of a rail. The rail flaw detector has a working capacity of about 2 km per day.
The rail flawless vehicle is a device for solving the problems of work ability and safety generated in the work using the rail flaw detector. The probes installed on the left and right proceed closely on the water-sprayed rail and emit ultrasonic waves to the rail surface. Analyze the reflected ultrasound to record the type, size, and location of the defect as a report, and display the state of the head, bottom, and abdomen of the rail in a graph, and spray paint on the spot where the defect is found for easy maintenance. It has a working capacity of about 20 km per hour.
However, the conventional rail detection method as described above has a problem that the operation speed is slow, depends on the level of skill of the skilled person, and the measured value varies depending on the state of the rail, the state of the probe, and the like.
This will be described in detail as follows.
In the case of a rail flawless vehicle, firstly, there are limited rails that can be inspected (e.g., 50KgN, 60KgN) .Other rails cannot be inspected.Secondly, the rails have not been rusted recently. Alternatively, when the head surface is rusty due to the low number of driving, there is a problem that it is difficult to accurately inspect due to the poor penetration of ultrasonic waves. Third, in the case of a severely weared or stagnant rail, the probe proceeds out of the center of the head of the rail so that an error may occur. Even if it passes through the center, the ultrasonic wave is poor in the half state, so it is difficult to detect the precision. Fourth, in the case of the pole rail, the joint where the step is generated is not recognized as a joint, and the probe is damaged due to the severe impact during the inspection. Fifth, the rail and the wheel of the flaw wheel friction in the sharp curve section In addition, the frequency of the generated noise is the same as the frequency of the ultrasonic wave used in the flaw detection vehicle, causing an error and spraying a large amount of paint. Sixth, the slow speed of the flawless vehicle hinders the operation of other trains. There were problems such as giving.
An object of the present invention is to solve the conventional problems as described above, in particular, by taking a thermal image of the temperature distribution of the rail rises due to the train immediately after the train passes in real time to analyze the temperature and abnormality of the rail Monitoring and database the monitoring results with location information, and if the rail status is considered dangerous, by notifying the following trains to prevent accidents due to rail abnormality, and easy maintenance and repair of the rail It is to provide a "rail monitoring system and method" that can be made, as well as a quick detection.
In other words, by installing a thermal imaging camera at the rear of the train and taking a thermal image of the rail whose temperature has risen due to the passing of the train, and analyzing its temperature distribution, it detects the rail's temperature, cracks, damage, gauges, etc. If the status of the rail is determined to be dangerous enough for the train to operate, the information is provided to the following trains through a train control system or wireless communication network such as ATP, ATC or ATO. This is to prevent accidents caused by abnormal rails and to facilitate maintenance, maintenance and repair.
An image taking unit which includes one or more thermal imaging cameras and photographs a thermal image of a rail temperature distribution after a train passes;
An image processor analyzing a thermal image of a rail temperature distribution photographed by the image photographing unit;
A position detecting unit detecting a rail detecting position;
An operation switch unit comprising one or more switches operated by a user;
A display alarm unit which shows monitoring results such as a rail state, a detection result, and a detection position;
A monitoring database unit for storing the rail monitoring result; And,
By controlling the operation of the image capturing unit, the image processing unit, the position detecting unit, the operation switch unit, the display alarm unit, and the monitoring database unit, the rail state is detected from the image of the rail temperature distribution after the train is displayed to display the monitoring result. And a control unit for controlling to make a database.
In the above configuration, the wireless communication unit is connected to the control unit for transmitting a signal indicating that the rail state is not normal to the central control system; characterized in that it further comprises a.
This monitors the condition of the rails, so if the rails are extremely poor and require immediate repair, or if the train is dangerous, the signal is sent to the central control system located at a remote location through the wireless communication unit. In order to prevent accidents due to bad rails by controlling the operation of subsequent trains.
The central control system refers to a control system that monitors and controls the status of trains operating on all routes.
In the above configuration, the signal output unit connected to the control unit for applying a signal indicating that the rail state is not normal to the train driving control device; characterized in that it further comprises a.
This is because, as a result of monitoring the rail condition, the rail condition is extremely poor and requires immediate repair, or when the train operation is dangerous, a signal indicating this is transmitted to the train operation control device so that the train following the train operation control device, Or to inform the central control system of the situation to prevent accidents due to rail failure.
For example, a signal indicating a rail failure is applied to an ATO to inform a subsequent train of a signal indicating this in the ATO, or the ATO transmits a signal indicating this to a central control system, and a subsequent train in the central control system. By controlling the operation of the above object is achieved.
In the above configuration, the map database unit is connected to the control unit, the map data for storing the train running route; characterized in that it further comprises a.
The map database unit reads the map data of the train position and displays the display alarm unit so that the rail state can be easily detected.
The map data stores information such as an installation position of the rail, an installation environment, and bending.
The thermal imaging camera of the image capturing unit is preferably composed of an infrared camera for photographing the temperature of the subject in different colors.
The image processor may detect a temperature of a rail by analyzing a thermal image photographed by the image photographing unit.
The image processor may detect an abnormal high temperature point of the rail by analyzing the thermal image photographed by the image photographing unit.
The image processor may detect an abnormal low temperature point of a rail by analyzing a thermal image photographed by the image photographing unit.
The image processor detects a rail by comparing each pixel of the thermal image having a color different according to temperature with an adjacent pixel, and then detects the temperature of the rail from the color of each pixel constituting the rail, and the temperature change is preset. When the temperature is above a certain value, the abnormally high temperature point is detected.
In other words, each pixel constituting the rail is compared with a temperature value of adjacent pixels constituting the rail, and when the value is a certain percentage, or above or below a certain temperature, it is determined as an abnormal high temperature point or an abnormal low temperature point.
The abnormal high temperature point, or the abnormal low temperature point is a point where the state of the rail is not normal.
In other words, if there is no defect in the rail, the elevated rail temperature due to the train should be spread evenly, but if damage such as cracks, abrasion, shading, etc. occurs inside the rail, heat transfer is uneven, resulting in abnormal high temperature points (or abnormal low temperature points). ), And the abnormal high temperature point or the part where the abnormal low temperature point is generated is judged as a bad rail condition.
For example, if a crack occurs inside the rail, the heat transfer is not normal, resulting in an abnormal high temperature point or abnormal low temperature point, and the part where the train wheels cannot reach due to abrasion generates an abnormal low temperature point. In the case of the illing, a stained temperature distribution occurs depending on the degree of progress.
The image processor may detect a gap, which is a distance between the rail and the rail, by analyzing the thermal image photographed by the image photographing unit.
In other words, each pixel of the thermal image is analyzed to connect the points having the same or similar temperature (same or similar color) to detect left and right lines, and the distance between the detected left and right sides is measured to detect whether the gauge is normal. In this case, the image processing is performed by referring to the distance between the normal gauges (for example, 1435 mm in the case of the standard gauge) when the rails on the left and right sides are detected.
Since image processing technology for detecting a certain object by image processing a still image or a moving image and measuring the distance between the object and another object is well known, its detailed description is omitted.
The image processing unit may be configured by mounting an image processing routine in a microcomputer or a computer system constituting a control unit, or may be configured as a known image processing dedicated processor.
The position detection unit is characterized in that configured as a GPS receiver.
The position detector is for detecting the current position of the train through the GPS receiver for receiving and outputting data on the position and time from the GPS satellites.
Since the technique of detecting the position through the GPS receiver is well known, its detailed description is omitted.
The position detection unit, GPS receiver; And, automatic navigation device; characterized in that comprises a.
The position detecting unit is for detecting the position through the automatic navigation device when the position cannot be detected by the GPS receiver such as a tunnel or a mountainous region.
Since the configuration and operation of the automatic navigation device which consists of a gyroscope, a speed detector, etc. and calculates a moving direction and a distance are well known, detailed description is abbreviate | omitted.
The display alarm unit includes a visual display unit for visually displaying a monitoring result; And an audible display unit that shows the monitoring result as an auditory sound.
The visual display unit is preferably composed of a monitor or a touch screen.
Preferably, the auditory display unit is configured as a voice synthesis device or an alarm sound generating device for guiding a voice that the rail state is not normal.
Since the configuration and operation of the speech synthesis device or the alarm sound generating device that outputs different guidance texts according to the given conditions are well known, detailed description thereof will be omitted.
The operation switch unit is characterized in that configured on the touch screen constituting the display alarm unit.
The operation switch unit is configured to facilitate configuration and operation by providing an operation switch on the screen after configuring the visual display unit of the display alarm unit as a touch screen without configuring a separate switch for inputting a control command.
The monitoring database unit and the map database unit may be configured as an internal memory of the controller or an external memory under the control of the controller.
The monitoring database unit or the map database unit may be configured as a memory card.
The monitoring database unit and the map database unit store the monitoring results using a memory card (eg, a flash memory card) to facilitate movement, exchange and management.
That is, when the monitoring result is moved after the rail detection is completed, the memory card is used to facilitate the movement and management, and the memory card in which the map data is stored even when the train route is changed is changed. The exchange of data is made.
The control unit is preferably composed of a microcomputer or a computer system having an input / output terminal, a calculation module, a memory, a communication module, and an A / D converter function.
The wireless communication unit preferably comprises a known wireless communication device for wireless communication with a central control system, or a mobile communication device for wireless communication with the central control system using a mobile communication network.
Since the configuration and operation of the wireless communication device and the mobile communication device are well known, detailed description thereof will be omitted.
The signal output unit is preferably composed of a known interface circuit for converting the signal format output from the control unit into a signal format suitable for the train operation control apparatus.
Since the interfacing circuit for converting a signal format transmitted from one device to a signal format input to another device is well known, its detailed description is omitted.
In the
An image capturing unit comprising one or more thermal imaging cameras and a CCD camera, for capturing a thermal image and a general image of a rail temperature distribution after a train passes;
An image processor analyzing the thermal image and the general image photographed by the image capturing unit;
A position detecting unit detecting a rail detecting position;
An operation switch unit comprising one or more switches operated by a user;
A display alarm unit which shows monitoring results such as a rail state, a detection result, and a detection position;
A monitoring database unit for storing the rail monitoring result; And,
The operation of the image photographing unit, the image processing unit, the position detecting unit, the operation switch unit, the display alarm unit, and the monitoring database unit controls the operation of the rail temperature from the image and the general image of the rail temperature distribution after the train is monitored. It is characterized in that the technical configuration comprises a; control unit to display the results, and to control the database.
The image processor detects a rail temperature, an abnormal high temperature point and an abnormal low temperature point by analyzing a thermal image of a rail temperature distribution photographed by a thermal imaging camera of the image photographing unit, and captures a general image captured by a CCD camera. It is characterized by detecting the gauge.
In the
On the other hand,
An image photographing step of photographing a thermal image, or a thermal image and a general image of a rail temperature distribution after a train passes;
A monitoring step of monitoring a rail state by analyzing the thermal image or the thermal image and the general image photographed by performing the image capturing step;
A position detection step of detecting a rail detection position after performing the monitoring step;
A display alarm step indicating a monitoring result and a detection position after performing the position detection step;
And a database step of databaseting the monitoring result and the detection position after performing the display alarming step.
In the above configuration, after performing the database step, it is determined whether the rail condition is extremely bad enough for immediate repair or the train operation is impossible, and if it is determined that the rail condition is extremely poor, the signal indicating this is centered. Characterized in that it further comprises a control system, or a dangerous signal transmission step of transmitting to a subsequent train.
When monitoring the rail state in the monitoring step, characterized in that the temperature of the rail is detected.
In the case of monitoring the rail state in the monitoring step, it is characterized by determining whether the rail is normal by detecting the abnormal high temperature point of the rail.
When monitoring the rail state in the monitoring step, it characterized in that the detection of the abnormal low temperature point of the rail to determine whether the rail is normal.
That is, the rail is detected by analyzing the color of each pixel constituting the thermal image, and the temperature of the rail and the abnormal high temperature point and the abnormal low temperature point are detected to detect whether the rail is normal.
When the rail state is analyzed in the monitoring step, the distance between the rail and the rail is detected to determine whether the gauge is normal.
That is, the rail is recognized by analyzing the thermal image or the general image, and the distance between the rails is detected to determine whether the gauge is normal.
In the
An image photographing step of photographing a thermal image, or a thermal image and a general image of a rail temperature distribution after a train passes;
A monitoring step of monitoring a rail state by analyzing the thermal image or the thermal image and the general image photographed by performing the image capturing step;
A position detection step of detecting a rail detection position after performing the monitoring step;
A map data reading step of reading map data of a current location after performing the location detecting step;
A display alarm step indicating a monitoring result, a detection position, and map data after performing the map data reading step;
And a database step of databaseting the monitoring result and the detection position after performing the display alarming step.
The
The present invention, "rail monitoring system and method", in particular, the train running at a commercial running speed and the thermal image of the rail temperature distribution immediately after the train passes by analyzing the temperature distribution of the rail rising due to the train passing the rail Detects abnormality and gauges, displays the monitoring results along with the location information, makes a database, and sends a signal to the train operation system or the central control system when the rail condition is considered to be extremely dangerous. It is a very useful invention that improves the detection efficiency and the effect that can prevent the accident due to rail abnormality, and facilitate the maintenance and management of the rail by informing the train.
When the technical concept of the "rail monitoring system and method" of the present invention configured as described above is described in detail by way of example.
In describing, the same name and the same code | symbol are used for the component which has the same or similar structure and function.
<Example>
This embodiment shows an embodiment of the
Therefore, in the present embodiment, the image capturing unit is composed of a thermal imaging camera and a CCD camera, and each of the thermal imaging camera and the CCD camera is mounted on the rear of the train so that an image of the same point is arranged to be described as an example. do.
In addition, in the present embodiment, when the rail condition is dangerous, a signal indicating this is transmitted to the central control system through the wireless communication unit, and the following description will be given by controlling the operation of a subsequent train in the central control system.
In the present embodiment, whether the abnormal high temperature point, the abnormal low temperature point, and the rail state are extremely poor is determined that the temperature of the detection pixel is higher or lower than the temperature of the adjacent pixel adjacent to the pixel to be detected. It will be described by taking an example of determining the time as an abnormal high temperature point or an abnormal low temperature point with respect to the detection pixel point.
In this embodiment, an abnormal high temperature point and an abnormal low temperature point are determined when the temperature of the detection pixel is 10% or more higher or lower than the temperature of the surrounding pixel, and an abnormal low temperature point is determined when the temperature of the detection pixel is higher or lower than 30%. Explain.
In addition, in this embodiment, the position detection unit will be described using an example constructed using a GPS receiver and an automatic navigation device.
In addition, in this embodiment, a description is given with an example provided with a map database portion for the rail installation position.
In the present embodiment, an image processing unit is configured using an image processing microprocessor as an example.
In addition, in the present embodiment, the control unit will be described by using a computer system as an example, and the display alarm unit will be described by an example including a visual display unit and an audio display unit.
In the present embodiment, the time display unit is composed of a monitor, an alarm, and the like, and the audio display unit is configured by using an audio synthesizing device and an alarm sound generating device.
In the present embodiment, the monitoring database section and the map database section will be described with an example of a memory card.
The reason why the present embodiment is configured as described above is that other embodiments according to the spirit of the present invention can be easily understood from the present embodiment.
Hereinafter, the configuration of the present embodiment will be described in detail with reference to the accompanying drawings.
First, as shown by the solid line in FIG. 2, the
The
Then, as shown in Figure 3, after installing the
1 shows an example of a configuration of a
In Fig. 1, 191a is a thermal image, 191b is a map data, 191c is a normal image, 191d is an abnormal high temperature point, 191e is a gauge, 191f, and 191g are detected states. Display window (191h) is a temperature contrast window according to color, (191i) is an alarm light, (192a) is a speaker, (131) is an emergency button, (132) is an operation button, (133) is a stop button The
Hereinafter, the operation and the effect of the present embodiment configured as described above will be described in detail with reference to the accompanying drawings.
First, a reference value determined as an abnormal high temperature point or an abnormal low temperature point in an internal memory of the
Similarly, when the gauge is wider than a predetermined width, it stores the reference value which determines that it is a bad gap, and the reference value which determines that a gap should be repaired immediately.
The
Thereafter, when the train is operating at a commercial speed, when the
That is, the
After performing the image capturing step S10, the monitoring step S20 is performed to monitor the rail state by analyzing the captured thermal image and the general image by performing the image capturing step S10.
That is, the thermal image is analyzed to detect the rail temperature, the abnormal high temperature point and the abnormal low temperature point are detected, and the gauge is measured to monitor the rail state.
This will be described as follows.
As is well known, a thermal image represents a temperature in color, and detects a color of a pixel constituting a rail to detect a rail temperature, and detects an abnormal high temperature point and an abnormal low temperature point among these rail temperatures to detect a rail state.
That is, when the temperature of the rail configuration pixel to be detected is 10% higher than the temperature of the other pixels constituting the rail, the abnormal high temperature point and the low temperature point of 10% or more are recognized as the abnormal low temperature point, and when the temperature is higher or lower than 30%. The rail condition is considered extremely dangerous.
Similarly, the gauge is detected by detecting the distance between the rail and the rail.
Image processing technology for recognizing a specific object such as a rail by analyzing a thermal image or a general image, analyzing each pixel constituting the recognized object, and calculating a distance between the objects is well known. Is omitted.
After performing the monitoring step (S20), the position detection step (S30), the map data reading step (S40), the display alarm step (S50) and the database step (S60) are sequentially performed as shown in FIG. In addition, monitoring results, detection location, and map data are displayed.
That is, the detection position is detected through the
In this case, as shown in FIG. 1, when an abnormal
On the other hand, as a result of performing the monitoring step (S20), the rail condition is extremely bad, or the gauge state is extremely poor, requiring immediate repair, or if the train operation is dangerous, perform the dangerous signal transmission step (S70) Is transmitted to the central control system (3) via the
Then the central control system (3) to control the subsequent operation of the train to prevent accidents due to rail failure, or gap gauge, until the
The monitoring results for the rail temperature, defects, and gauge gauges detected through the above process are analyzed after the train operation is completed, and maintenance, management, and repair work for the corresponding point is performed.
In this case, since the data about the position of the rail and the track where the defect is generated is stored in the monitoring result, it can be easily known without a separate display (paint injection) like a conventional flawless vehicle.
In other words, a separate monitoring result analyzer (eg, a laptop computer) is used to perform maintenance, maintenance and management.
In FIG. 1, the
As described above, the present embodiment captures a thermal image of the rail temperature distribution immediately after the train through a thermal imaging camera and a CCD camera mounted on the rear of the train to detect the rail temperature, defects, and gauges to detect the rail state. In case that it is determined that the rail condition is extremely poor and requires immediate repair or the train cannot be operated, the signal indicating this to the central control system is transmitted to the central control system through the wireless communication unit. By controlling the operation, it is possible to prevent an accident due to a rail defect and a bad gap.
However, in the above embodiment, although the image capturing unit is configured with a thermal imaging camera, one camera, and one CCD camera, the technical spirit of the present invention is not limited thereto.
That is, it is understood that the image capturing unit may be configured by one thermal imaging camera to detect temperature, defects and gaps of the rail, or the image capturing unit may be configured by a plurality of thermal imaging cameras and CCD cameras.
In addition, in the above embodiment, when the rail condition is extremely dangerous, a signal indicating this is transmitted to the central control system through the wireless communication unit, and the following train control is controlled under the control of the central control system, resulting in an accident due to a bad rail. It is configured to prevent the but the technical concept of the present invention is not limited to this.
That is, as indicated by a dotted line in FIG. 2, a signal indicating a danger is applied to a train driving control device through a signal output unit to signal a signal indicating a danger to a subsequent train or a central control system in the train driving control device (eg, ATO). Note that you can send.
In addition, in the above embodiment, it is configured to determine whether or not an abnormal high temperature point (or an abnormal low temperature point) for each pixel constituting the thermal image, but the technical idea of the present invention is not limited thereto.
That is, the average value of the pixels adjacent to the pixel to be detected can be detected and compared, and the function can be performed in units of a predetermined range of pixels. In addition, it is possible to detect abnormal high temperature points, abnormal low temperature points, and gauges using other known image processing techniques, such as detecting contours of pixels within the same temperature or a certain allowable range to perform the above function. To reveal.
In addition, in the above embodiment, the criteria for determining that the abnormal high temperature point and abnormal low temperature point or the rail state are extremely dangerous are described as 10% and 30% of the ambient temperature. However, these figures are only examples for explanation. It is noted that the technical idea of the present invention is not limited thereto.
In other words, it is possible to select an appropriate value depending on the detection environment or other factors.
In addition, in the above embodiment, the position detection unit is configured by using both the GPS receiver and the automatic navigation device, but the technical spirit of the present invention is not limited thereto.
In other words, it can be understood that only one of the above components can be configured.
In the above embodiment, the image processing unit is configured by using an image processor dedicated microprocessor, but the technical spirit of the present invention is not limited thereto.
In other words, it is understood that an image processing routine may be mounted in a computer system or a microcomputer constituting a control unit to perform the function.
In the above embodiment, the monitoring database unit and the map database unit are described using an example of a memory card, but the technical spirit of the present invention is not limited thereto.
1 is a configuration diagram showing an embodiment of the "rail monitoring system" of the present invention;
2 is a block diagram showing the configuration of the "rail monitoring system" of the present invention;
3 is a system configuration diagram showing a configuration of the present invention "rail monitoring system",
4 is a control flow diagram illustrating the present invention "rail monitoring method".
Explanation of symbols on the main parts of the drawings
100: rail monitoring system 110: imaging unit
111: thermal imaging camera 112: CCD camera
120: image processing unit 130: operation switch unit
140: signal output unit 150: wireless communication unit
160: control unit 170: monitoring database unit
180: position detector 181: GPS receiver
182: automatic navigation device 190: display alarm unit
191: time display unit 192: auditory display unit
200: map database unit
S10: imaging step S20: monitoring step
S30: location detection step S40: map data reading step
S50: display alarm step S60: database step
S70: danger signal transmission step
Claims (19)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080010995A KR20090085214A (en) | 2008-02-04 | 2008-02-04 | System and method to monitor a rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080010995A KR20090085214A (en) | 2008-02-04 | 2008-02-04 | System and method to monitor a rail |
Publications (1)
| Publication Number | Publication Date |
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| KR20090085214A true KR20090085214A (en) | 2009-08-07 |
Family
ID=41205271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| KR1020080010995A KR20090085214A (en) | 2008-02-04 | 2008-02-04 | System and method to monitor a rail |
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| Country | Link |
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| KR (1) | KR20090085214A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101275916B1 (en) * | 2011-08-10 | 2013-06-17 | 한밭대학교 산학협력단 | Inspection apparatus for railroad |
| CN106828534A (en) * | 2017-03-02 | 2017-06-13 | 西南交通大学 | The apparatus and method that Wheel/Rail Contact Point on rail is detected during train driving |
| KR20190015868A (en) * | 2017-08-07 | 2019-02-15 | 주식회사보다텍 | Response System For a Fall From Railroad Platform |
| KR20190024447A (en) | 2017-08-31 | 2019-03-08 | 투아이시스(주) | Real-time line defect detection system |
| KR20190028213A (en) * | 2017-09-08 | 2019-03-18 | 동희오토주식회사 | Smart Monitoring System and Painting System thereby |
-
2008
- 2008-02-04 KR KR1020080010995A patent/KR20090085214A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101275916B1 (en) * | 2011-08-10 | 2013-06-17 | 한밭대학교 산학협력단 | Inspection apparatus for railroad |
| CN106828534A (en) * | 2017-03-02 | 2017-06-13 | 西南交通大学 | The apparatus and method that Wheel/Rail Contact Point on rail is detected during train driving |
| KR20190015868A (en) * | 2017-08-07 | 2019-02-15 | 주식회사보다텍 | Response System For a Fall From Railroad Platform |
| KR20190024447A (en) | 2017-08-31 | 2019-03-08 | 투아이시스(주) | Real-time line defect detection system |
| KR20190028213A (en) * | 2017-09-08 | 2019-03-18 | 동희오토주식회사 | Smart Monitoring System and Painting System thereby |
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