JP2007288893A - Electric-car line pantograph bounce detection device and electric-car line pantograph bounce detection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pantograph bounce detection method which can easily detect a position where a rubbing plate of a pantograph has been bounced. <P>SOLUTION: In this detection device 10, a camera 18A and an illuminance sensor 20A are arranged toward a contact point of the rubber plate of the pantograph and an electric-car line. Also in the electric-car line at one side, a camera 18B and an illuminance sensor 20B are arranged toward the contact point of the rubber plate of the pantograph and the electric-car line. A comparator 26A which compares output values, and outputs an alarm when the difference of the outputs is not lower than a certain value is connected to the illuminance sensor, and similarly to the illuminance sensor at one side, a comparator 26B is connected, which compares output values, and outputs an alarm when the difference of the outputs is not lower than the certain value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to maintenance and inspection work on a train line installed to supply power to a vehicle along a track such as a monorail or an electric railroad, and in particular, checks a contact state between a current collector having a pantograph and a train line. In addition, the present invention relates to a train line separation detection device and a train line separation detection method for detecting a separation line position.

  Train lines that supply power to vehicles such as railways and monorails are inspected for the presence or absence of separation from the pantograph rubbing plates that constitute the current collector, due to new wear and due to daily wear and corrosion. For example, the scraping of the scraper causes the following event.

  A) When the wire is separated, an arc is generated at that moment, and depending on the arc duration, the hard copper train wire is softened, leading to local abnormal wear and breaking of the overhead cable.

  B) A momentary power failure of the vehicle occurs due to poor current collection, resulting in malfunction of the electronic devices in the vehicle.

  C) A spark sound at the time of arc occurrence becomes noise to the surroundings.

  From the above, since it is necessary to perform maintenance and correction on all the train lines in the travel section so as to reduce the disconnection, it is necessary to specify the disconnection point. The conventional separation line detection method and its problems are described below.

a) Separation detection method based on detection of pantograph side voltage drop This is a method of detecting a phenomenon in which the pantograph voltage on the vehicle side instantaneously drops due to the separation line, and detecting it by a voltage difference with other vehicles that are normally collecting current. This method cannot be used for recent vehicles in which a plurality of pantographs are connected by a high-voltage bus in order to compensate for the current collection failure.

b) Separation detection method by detecting a current value drop on the pantograph side This is a method in which an ammeter such as a clamp meter is installed in the power supply cable coming out of the pantograph and the separation line is detected from an instantaneous drop in the current value. In this method, even when a high-voltage bus as described above is passed, detection is possible by installing an ammeter on the pantograph side of the bus. However, since the current value becomes extremely low when the train is traveling by inertia regardless of the motor, detection is difficult in this section.

c) Derailment detection method detected by taking a photo at night from the ground A camera is installed on the side of the route, and it is detected during a long exposure at the night while the vehicle passes, and the arc is detected as a light spot near the train line. It is a method to do. In this method, the arc generation location can be identified at a glance, but it can be performed only under specific conditions, such as the surrounding lighting being an obstacle and the camera installation being difficult in mountainous areas and bridges. Furthermore, since the range that can be photographed at one time is limited, it is not suitable for detection over all lines.

d) Separation detection method by brightness detection using illuminance sensor or light sensor Install illuminance sensor or light sensor toward the contact point of pantograph and train line on the vehicle, and detect from sensor output by arc light Is the method. In this method, as in c), detection is difficult unless the surroundings are sufficiently dark, such as night driving or a tunnel section.

e) Detection method of line separation by video camera photography and image analysis Video contact point of pantograph and train line is continuously recorded and recorded by camera mounted on the vehicle, and the image is continuously compared and analyzed based on brightness or color. This is a method of detecting an arc by doing. This method also has a problem that it is difficult to detect when the ambient illuminance changes continuously, as in the case of c), which requires a certain level of surrounding darkness that allows comparative analysis.

  In the above detection method, it is difficult to specify the arc generation location as it is except when observing from the ground of c). Therefore, the position can be specified in association with the arc detection location based on the time from the starting point and speed of the traveling vehicle. In a suspended train line, the range of arc detection points is specified by counting the columns installed at intervals.

  In the former position identification method, it is necessary to take out a speed signal from the vehicle, and accurate position identification can be performed by calculating speed and time. However, since the track facility has only a route distance display in units of 100 meters, However, it is necessary to measure the exact position with a tape measure at the site, and it takes time and effort to specify the separation line position.

  In the latter method, since the overhead wire posts are installed at an interval of about 10 m, it is possible to identify the position where the separation line is generated in a relatively narrow range, but it may be difficult to detect when the shape and installation distance of the posts are different. There are problems such as. Also, it cannot be applied to tunnel sections or monorails that are suspended directly from the wall surface.

Patent Document 1 discloses a detection device that detects the amount of wear of a trolley wire. This detector pays attention to the fact that the trolley wire is made of copper-coated steel, and wavelength-disperses the arc discharge light generated by sliding the trolley wire and the pantograph with a spectroscope. When the light is detected, it is detected that the wear has reached the copper core wire. Although this detection device can detect the wear of the trolley wire, it does not have means for specifying the position of all the wires. Further, Patent Document 2 discloses a pantograph arc detection device, but this also does not have means for specifying the position in all lines.
Japanese Patent Laid-Open No. 9-5035 JP-A-11-46402

  SUMMARY OF THE INVENTION An object of the present invention is to overcome the problems in each of the above-mentioned separation line detection methods, and to easily detect a position where a rubbing plate of a train pantograph is separated from the train line and a train line. It is to provide a method for detecting separation.

  In order to achieve the above object, the invention according to claim 1 is mounted on a train, and is mounted on the train, and a detector that detects that a rubbing plate of a pantograph of the train is disconnected from the train line. In addition, a positioning receiver that acquires the current position of the train based on position information from the artificial satellite, and a recording unit that records the current position of the train received by the positioning receiver when the detection unit detects a separation line And a control unit for recording the data.

  According to the first aspect of the present invention, when separation is detected by the detection unit, the control unit records the position information from the artificial satellite received by the positioning receiver at that time in the recording unit. Therefore, the separation line position can be easily specified by reading the position information recorded in the recording unit. Since the positional information from the artificial satellite has an error of about 2 to 3 mm, it does not take time to detect the actual separating line position at the specified separating line position.

  The invention according to claim 2 is provided with imaging means for imaging a contact point between the rubbing plate and the train line in claim 1, and the control unit detects the separation line by the detection unit. It is characterized in that separation detection information is added to the image captured by the imaging means and recorded in a recording unit.

  According to the second aspect of the present invention, when the line separation is detected by the detection unit, the line separation detection information is added to the image captured by the imaging unit and recorded in the recording unit. Image search becomes easy. Further, by reading out the image, it is possible to visually confirm the state of separation at the separation point. Moreover, by photographing the same part after inspection and repair, those images become comparative verification materials. Based on the position information received by the positioning receiver, the image at the same location after inspection and repair can be easily obtained by imaging the contact point with the imaging means when positioned at the separation line. .

  According to a third aspect of the present invention, in the second aspect, the control unit associates the latitude and longitude information of the current position acquired by the positioning receiver with the images continuously captured by the imaging unit. It is recorded in a recording unit.

  According to the third aspect of the present invention, the control unit causes the recording unit to record the latitude / longitude information of the current position acquired by the positioning receiver in association with the images continuously captured by the imaging unit. In this way, by continuously capturing images with the image capturing means, it is possible to easily confirm the state of the train line at an arbitrary position located for every predetermined distance of the entire route, not just the part of the separation line.

  According to a fourth aspect of the present invention, in the first, second, or third aspect, the control unit displays the positional information obtained by the positioning receiver in correspondence with the signal output of the detection of the separation line of the detection unit. And the display unit displays the separated line detection position superimposed on the map information stored in advance.

  According to the invention described in claim 4, the display unit displays the separation line detection position superimposed on the map information stored in advance, so that the operator can easily identify the separation line part and the separation line part in real time. Can be confirmed.

  A fifth aspect of the present invention is the first, second, third, or fourth aspect, wherein the detection unit outputs light or brightness of two illuminance detectors or spectroscopic altimeters for one off-line observation point. Detecting means for detecting the brightness of the contact point between the rubbing plate and the train line, and the other detecting means is a separation line emitted from a separation line observation point. It is installed at a position that does not directly accept the arc light by and detects the brightness around it, and the detection unit compares the brightness or light intensity detected by both detection means by a comparison means, and exceeds a certain level. When there is a difference, a separation detection signal is output.

  The invention relating to the detection unit according to claim 5 focuses on the arc light generated by the separation line, one detection means for detecting the brightness of the arc light, and the brightness of the surroundings not directly accepting the arc light. The other detection means for detecting the brightness and the light intensity detected by both of the detection means, and a comparison means for outputting a separation detection signal when there is a difference (experience value) that exceeds a certain level in the output. Have. Thereby, even if an illuminance change occurs in the surroundings, the arc light can be discriminated from the surrounding light, so that the separation line can be reliably detected.

  The invention according to claim 6 is characterized in that, in claim 5, the train is a straddle-type monorail or a suspended monorail, and the detection means is arranged inside a cover that covers the pantograph. And

  According to the sixth aspect of the present invention, the detection means is installed inside a carriage cover (commonly referred to as a skirt) that covers the pantograph unique to the monorail, that is, in a dark environment, but the illuminance is used as the detection means. When the detector is used, the illuminance detector can detect ultraviolet light in an ambient illuminance environment of, for example, about 1000 lx, and therefore can sufficiently detect and detect arc light with strong ultraviolet light even in a dark environment. In addition, by arranging the detection means in such a dark environment, it is possible to suppress fluctuations in the output value of the other detection means that detects ambient light, so that the comparison control algorithm circuit in the comparison means can be easily designed. become.

  As described above, according to the train line separation line detection device according to the present invention, the separation line position can be detected even when the ambient illuminance changes, the separation line position can be detected even during coasting, regardless of the power supply type of the vehicle, and The location of the separation line generation can be easily determined regardless of the train line suspension form or the column shape.

  According to a seventh aspect of the present invention, in order to achieve the above object, the train pantograph rubbing plate is separated from the train line by using any one of the train line separation detection devices of claims 1 to 6. It is characterized by detecting the position.

  According to the train line separation line detection device according to the present invention, the separation line position can be detected even when the ambient illuminance changes, the separation line position can be detected even during coasting, regardless of the vehicle power supply type, and the separation line occurrence position can be detected. The identification can be easily performed regardless of the train line suspension form or the column shape.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a train line separation detection device according to the present invention will be described in detail below with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing an overall configuration of a train line separation / separation detection device 10 according to an embodiment. This train line separation line detection device 10 is intended to detect a train line separation line in straddle-type monorail traffic, and on the + side of the train line 12A, a contact point between the rubbing plate 16A of the pantograph 14A and the train line 12A ( A camera (imaging means) 18A and an illuminance sensor (detection unit: detection means) 20A are installed toward the separation line observation point), and the arc light 22A emitted from the contact point is not directly captured, and around the pantograph 14A. An illuminance sensor 24A configured to capture illuminance is installed. Similarly, on the minus-side train line 12B, a camera (imaging means) 18B and an illuminance sensor (detection means) 20B are installed toward the contact point between the rubbing plate 16B of the pantograph 14B and the train line 12B. An illuminance sensor 24B that does not directly capture the arc light 22B emitted from the contact point and captures the illuminance around the pantograph 14B is provided.

  Further, the two illuminance sensors 20A and 24A on the + side are connected with a comparator (comparison means) 26A that compares the output values and outputs an alarm when the output difference (experience value) exceeds a certain value. The two illuminance sensors 20B and 24B on the side are also connected with a comparator (comparison means) 26B that compares the output values and outputs an alarm when the output difference (experience value) is greater than a certain value. The alarm outputs from these comparators 26A and 26B are output to a personal computer (control unit) 34, and the personal computer 34 has a recording device 30 and a GPS device for continuously recording images of the cameras 18A and 18B and the vehicle window camera 28. (Positioning receiver) 32 is connected.

  The vehicle window camera 28 is installed in the driver's seat so as to capture the scenery in front of the monorail. The GPS device 32 includes a GPS antenna 36 and a GPS unit 38, and the GPS unit 38 detects the current position (latitude of the GPS antenna 36) based on position information from an artificial satellite (not shown) received by the GPS antenna 36. It is a well-known global positioning system that calculates (longitude). The GPS antenna 36 is preferably arranged close to the rubbing plates 16A and 16B in order to detect the position of the separation line, but in order to receive the position information from the artificial satellite without any obstacle, and to specify the position of the rubbing plates 16A and 16B. In order to achieve this, it is preferable to install the vehicle directly above the rubbing plates 16A and 16B on the ceiling of the vehicle.

  The personal computer 34 to which the GPS device 32 is connected contains a program that can take in an electronic drawing file (map) representing a monorail route in a plane. Further, the program has a function of recognizing each point on the route as coordinates by inputting latitude and longitude coordinate data acquired from the GPS device 32 in advance to an arbitrary point on the electronic map. In addition, the program represents the position information obtained from the GPS device 32 as a point O on the map 34B of FIG. 2 displayed on the display 34A of the personal computer 34, and is output from the comparators 26A and 26B of FIG. The coordinates of the separation line position can be recorded and managed by linking to the alarm signal and displayed on the map 34B of the display 34A. In addition to the map 34B, the display 34A displays the latitude and longitude of the point O, the date, the time, and the monorail speed.

  The image P1 including the map 34B displayed on the display 34A of the personal computer 34 is transferred to the recording device 30 together with the images of the cameras 18A and 18B and the vehicle window camera 28. Then, on the display 40A of the monitor 40 connected to the recording device 30, in addition to the image P2 of the contact point between the rubbing plate 16A and the train line 12A, and the image P3 of the contact point between the rubbing plate 16B and the train line 12B, Four screens are simultaneously displayed together with the landscape image P4 and are simultaneously recorded in the recording device 30 at the same time. This landscape image P4 can be used for approximate position recognition. In addition, the code | symbol 42 in the display 40A of the monitor 40 is a running rail (girder), and the codes | symbols 44A and 44B are running tires.

  The monorail pantographs 14A and 14B are installed inside the bogie covers 52A and 52B under the floor of the vehicle 50 shown in FIGS. 3 (A), (B), and (C). There is a gap between the carriage covers 52A and 52B and the traveling rail 42, and the illuminance is constantly changing depending on the incident light intensity of the outside light in the traveling section. However, since the illuminance sensors 20A and 20B can detect UV light in an ambient illuminance environment of about 1000 lx, the arc light 22A and 22B having strong ultraviolet rays can be sufficiently identified and detected even in such an environment. Even if the illuminance sensors 20A and 20B mistakenly recognize a separation line, the images P2 and P3 captured by the cameras 18A and 18B can be easily determined by visually observing the images on the monitor 40.

  Furthermore, since the personal computer 34 in FIG. 1 can record a disconnection point as a point O (point) on the map 34B, even if it goes to repair work of the disconnection point later, several meters (2 to 3 m) that the GPS device 32 has. ) It is easy to get to the site with accuracy, and since the coordinates are electronically managed, the coordinates are transferred to a handy type GPS device (not shown), and the GPS device is carried by the operator so that there is no map. But it's easier to get to the site.

  To reiterate, according to the train line separation / separation detection device 10 of the embodiment, when the alarm signal from the comparator 26A and / or the comparator 26B is output to the personal computer 34, the personal computer 34 is received by the GPS device 32 at that time. The recorded position information from the artificial satellite is recorded in the recording device 30. Therefore, the separation line position can be easily specified by reading the position information recorded in the recording device 30.

  Further, when the separation line is detected by the comparator 26A and / or the comparator 26B, the personal computer 34 adds the separation line detection information to the contact point images P2 and P3 imaged by the cameras 18A and 18B and causes the recording device 30 to record them. Therefore, it is easy to search for an image at the time of separation performed later. Further, by reading out the image, it is possible to visually confirm the state of separation at the separation point. Moreover, by photographing the same part after inspection and repair, those images become comparative verification materials. Based on the position information received by the GPS device 32, the image at the same location after the inspection and repair can be easily obtained by capturing the contact point with the cameras 18A and 18B when positioned at the separation line. .

  Furthermore, if the personal computer 34 records the latitude / longitude information of the current position acquired by the GPS device 32 on the recording device 30 in association with the images continuously captured by the cameras 18A and 18B, It is possible to easily check the state of the train lines 12A and 12B at arbitrary positions located at predetermined distances on all the routes.

  Further, the display 34A of the personal computer 34 displays the separation line detection position (point O) superimposed on the map information stored in advance, so that the operator can easily identify the separation line part and check the separation line part in real time. be able to.

  As described above, according to the train line separation line detection device 10 and the separation line detection method of the embodiment, the separation line position can be detected even when the ambient illuminance changes, and the separation line position can be detected even during coasting, regardless of the vehicle power supply type. Can be detected, and the position where the separation line is generated can be easily determined regardless of the train line suspension form or the column shape.

  In the train line separation detection device 10 according to the embodiment, the illuminance sensors 20A and 20B are used for detecting the arc light 22A and 22B. However, the spectrophotometer or the like is used, and the light wavelength peculiar to ultraviolet rays or copper sparks. May be detected.

  Further, even when the illuminance sensors 20A and 20B are used, the illumination that does not hinder the detection of arc light is applied to the contact portions of the rubbing plates 16A and 16B and the train lines 12A and 12B to stabilize the ambient illuminance. The arc light detection accuracy can be improved.

  Furthermore, although the straddle-type monorail has been described in the embodiment, the present invention is not limited to this, and the train line separation detection device 10 of the embodiment can be applied to a suspended monorail. In the case of a suspended monorail, since a current collector including a pantograph is installed in a cylindrical cover that covers the traveling rail, the cameras 18A and 18B and the illuminance sensors 20A and 20B of the embodiment are installed inside the cover. What is necessary is just to install 24A, 24B.

Device configuration diagram of a preferred embodiment of a train line separation detector according to the present invention Explanatory drawing which showed the example of a personal computer screen display of the electronic map and GPS data of the train line separation detection apparatus of FIG. It is explanatory drawing of a straddle-type monorail, Comprising: Explanatory drawing which showed the attachment position of the camera and illumination intensity sensor with respect to a cover

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Train line departure detection apparatus, 12A, 12B ... Train line, 14A, 14B ... Pantograph, 16A, 16B ... Scrap plate, 18A, 18B ... Camera, 20A, 20B ... Illuminance sensor, 22A, 22B ... Arc light, 24A, 24B ... Illuminance sensor, 26A, 26B ... Comparator, 28 ... Car window camera, 30 ... Recording device, 32 ... GPS device, 34 ... Personal computer, 40 ... Monitor, 50 ... Vehicle, 52A, 52B ... Cart cover

Claims (7)

A detector that is mounted on the train and detects that the pantograph scraper of the train is separated from the train line,
A positioning receiver that is mounted on the train and acquires the current position of the train based on position information from an artificial satellite;
A control unit that records the current position of the train received by the positioning receiver in the recording unit when a line separation is detected by the detection unit;
A train line separation detection device. Comprising imaging means for imaging a contact point between the rubbing plate and the train line;
2. The train line according to claim 1, wherein when the detection unit detects a separation line, the control unit adds the separation line detection information to the image captured by the imaging unit and causes the recording unit to record the train line. Line separation detector.   The control unit causes the recording unit to record latitude and longitude information of the current position acquired by the positioning receiver in association with images continuously captured by the imaging unit. The described train line separation detection device.   The control unit outputs the position information obtained by the positioning receiver in association with the signal output for detecting the separation line of the detection unit, and outputs the position information to the display unit, and the display unit stores the map information stored in advance. 4. The train line separation detection device according to claim 1, wherein the separation line detection position is superimposed and displayed. The detection unit includes detection means for detecting light or brightness such as two illuminance detectors or a spectroscopic altimeter according to the intensity of one separation line observation point,
One detection means is installed at a position to detect the brightness of the contact point between the rubbing plate and the train line,
The other detection means is installed at a position that does not directly accept arc light caused by the separation line emitted from the separation line observation point and detects the brightness of the surrounding area.
The detection unit causes the comparison unit to compare brightness or light intensity detected by both detection units, and outputs a separation detection signal when there is a certain difference or more. 4. The train line separation detection device according to any one of 4 above. The train is a straddle-type monorail or a suspended monorail,
The train line separation detection device according to claim 5, wherein the detection unit is disposed inside a cover that covers the pantograph.   A train line separation detection method, comprising: detecting a position where a rubbing plate of a pantograph of a train is separated from the train line by using any one of the train line separation detection devices.

Images