Information detection device for monitoring overhead lines

Abstract

To provide an Information detection device for monitoring overhead lines that enables, with a simple configuration, quickly obtaining highly urgent monitoring information which requires particularly prompt response measures.SOLUTION: An Information detection device 1 for monitoring overhead lines is attached to a monitoring target such as a tension balancer in railway overhead line equipment, and comprises information recording media such as wireless tags 4 on each of which identification information for identifying the monitoring target and management information related to a monitoring state are pre-recorded; and this recorded information is read by information acquisition means such as a tag reader. The Information detection device further comprises: a media connection body 2 in which the multiple wireless tags 4 are arranged along a displacement direction of an inner cylinder that undergoes relative displacement with respect to an outer cylinder of the tension balancer; and a cover 3 with a reading window 5 through which information on the information recording medium can be read, the information being changed in response to displacement of the inner cylinder from a reference position. One end of the cover 3 is pivotally supported on the outer cylinder in a manner of being freely unwounded and wounded while being biased with a constant load in a winding direction, and the other end is fixed to the inner cylinder, and made of flexible steel that can expand and contract in response to a relative displacement of the inner cylinder.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an information detection device for monitoring overhead lines that attaches information recording media such as wireless tags and QR codes (registered trademark) to railway overhead line equipment and reads information changes based on displacement states to monitor the equipment. [Background technology]

[0002] Conventionally, a monitoring system for electric railroad tracks has been proposed in which a measurement unit receives signals from wireless tags attached to the monitored objects using multiple receiving antennas at different positions, and a location server multiplies the time difference in reception time by the propagation speed of the signals to calculate the difference in distance from the wireless tags to each receiving antenna, thereby estimating the relative displacement between the monitored objects (see Patent Document 1). In addition, a monitoring system for electric train tracks has been proposed in which wireless tags with sensors that detect the condition are attached to the poles or associated equipment of electric train tracks in a specified section, forming a network in which information is transmitted sequentially between adjacent wireless tags (see Patent Document 2). Furthermore, a facility information management system has been disclosed in which a communication device is attached to a mobile body that moves along the facility to be monitored, a wireless tag stores facility information from sensors installed in the facility, and the facility information is transmitted to the communication device upon receiving a start-up instruction signal from the communication device (see Patent Document 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-67207 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-28535 [Patent Document 3] Japanese Patent Application Laid-Open No. 2012-174176 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] In the above-mentioned conventional train track monitoring systems, sensors for detecting conditions and active wireless tags are used, which require a power source, making the configuration complex and inevitably increasing costs. In addition, it takes time to collect data and obtain the necessary monitoring information through calculation processing, which prevents the monitoring information from being disseminated in a short period of time. Therefore, an object of the present invention is to provide an overhead line monitoring information detection device that has a simple configuration and that can easily and quickly obtain highly urgent monitoring information that requires particularly rapid response measures. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides an information detection device 1 for monitoring overhead wires, which includes an information recording medium such as a wireless tag 4 on which identification information for identifying a monitoring target such as a tension balancer B in railway overhead wire equipment and management information related to the status of the monitoring target are recorded, and from which this recorded information is read by information acquisition means. The device includes a medium connecting body 2 having multiple information recording media lined up in the displacement direction of a movable part such as an inner tube B2 that undergoes relative displacement with respect to a fixed part of the monitoring target such as the outer tube B1 of tension balancer B, and a cover 3 having a reading window 5 through which information from the information recording media corresponding to the displacement of the movable part can be read. [Effects of the Invention]

[0006] The present invention has the advantage of being able to reduce costs with a simple configuration that uses passive wireless tags and QR codes (registered trademark), without using sensors to detect conditions and active wireless tags, and being able to easily and quickly obtain monitoring information that is particularly urgent and requires prompt response measures. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic front view of an installation state of an information detection device for monitoring overhead wires according to the present invention; [Figure 2] In the front view of the overhead line monitoring information detection device of FIG. 1, (A) shows the covering body in a reference state, and (B) shows the covering body in a displaced state. [Figure 3] FIG. 2 is a perspective view of a cover of the overhead line monitoring information detection device. [Figure 4] FIG. 10 is a schematic front view of the overhead line monitoring information detection device in another installation state. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the present invention will be described with reference to the drawings. In Figure 1, at least one of the support poles P of a trolley wire T, a railway overhead wire installed between adjacent support poles in the extension direction along the railway track, is provided with a spring-type tension balancer B, which is the object of monitoring and applies a predetermined tension to the trolley wire T. This tension balancer B has an inner cylinder B2, which is a movable part, nested within an outer cylinder B1, which is a fixed part connected to a structure, with a spring interposed between the outer cylinder B1 and the inner cylinder B2, and the trolley wire T connected to the tip of the inner cylinder B2. The inner cylinder B2 is pulled out to a predetermined distance in advance, and the trolley wire T is connected with the spring in a compressed state, thereby applying a predetermined tension to the electric rail regardless of its expansion or contraction.

[0009] The overhead wire monitoring information detection device 1 according to the present invention comprises a medium connection body 2 fixed to the side of the outer tube B1 of a tension balancer B, and a cover 3 that covers the medium connection body 2. The medium connection body 2 in this embodiment is formed by fixing a plurality of wireless tags 4 arranged in the direction of extension and retraction of the inner tube B2. The wireless tags 4 are passive type, and pre-record identification information that identifies the tension balancer B and management information that indicates the state in which the protrusion length of the inner tube B2 is within a predetermined range, and are arranged so that the information can be acquired by a tag reader, which is information acquisition means (not shown).

[0010] One end of the covering body 3 is fixed to the base of the outer tube B1 of the tension balancer B, and the other end is fixed to the inner tube B2. It covers the surface of the connected medium body 2 to prevent information from being read, while having a reading window 5 in part to expose a wireless tag 4, which records management information about the current protrusion length of the inner tube B2, so that it can be read by a tag reader. As shown in FIG. 3, for example, this covering body 3 is made of a flexible, long steel strip 6 that is wound around a drum axially supported at both ends while being biased in the winding direction with a constant load, and is provided with a reading window 5 during unfolding. One end of the steel strip 6 is axially supported by the inner tube B2, and the other end is axially supported by the outer tube B1. The drum around one end shaft 6a is fixed around the shaft, and the drum around the other end shaft 6b is supported by the other end shaft 6b so that it can rotate freely and unwind and rewind the steel strip 6. Therefore, as the steel strip 6 unfolded from the drum around the other end shaft 6b is unwound and reeled in, the distance between the shafts flexibly expands and contracts so that the one end shaft 6a is displaced relative to the inner tube B2, and the tag reader acquires the recorded information of a specific wireless tag 4 at the displacement position corresponding to the reading window 5, thereby detecting the protrusion length.

[0011] As shown in Figure 4, the overhead line monitoring information detection device 1 may be placed below the tension balancer B of the support P, with one end fixed to the support P and the other end fixed to a connecting rod B3 extending laterally and fixed to the electric wire.In this case, too, the one end shaft 6a displaces relatively together with the connecting rod B3 which moves integrally with the inner tube B2, and the recorded information of a specific wireless tag 4 at the displaced position corresponding to the reading window 5 is acquired by the tag reader.

[0012] The information recording medium of the medium connector 2 can be a QR code (registered trademark) containing the above information or other well-known recording medium, and the recorded information of a specific recording medium at a displacement position corresponding to the reading window 5 of the cover 3 can be obtained by an information acquisition means such as a code reader.

[0013] The tag reader, code reader, or other information acquisition means can be carried by a maintenance worker to acquire information at the site, or can be mounted on a moving railway vehicle to acquire information. Furthermore, the object to be monitored by the overhead line monitoring information detection device 1 is not limited to the tension balancer B, but can be widely applied to other equipment, metal fittings or components that have parts that are subject to displacement within railway overhead line equipment, and the fixed part and the movable part are not limited to the parts of the object to be monitored themselves, and it goes without saying that the mounting positions of the medium connector 2 and the covering body 3 relative to the fixed part and the movable part can be changed relative to each other. [Explanation of symbols]

[0014] 1. Information detection device for monitoring overhead lines 2 Media concatenation 3 Covering 4. Wireless tags 5 Reading window 6 Steel strips 6a One end shaft 6b Other end shaft T contact wire P-post B Tension balancer B1 outer cylinder B2 inner cylinder B3 connection rod

Claims

1. An overhead line monitoring information detection device including an information recording medium on which identification information for identifying a monitoring target in railway overhead line equipment and management information relating to the status of the monitoring target are recorded, and from which the recorded information is read by an information acquisition means, a medium assembly including a plurality of the information recording media arranged along a displacement direction of a movable part that is displaced relative to a fixed part of the monitoring target; and a cover having a reading window through which information on the information recording medium corresponding to the displacement of the movable part can be read.

2. The information detection device for overhead line monitoring described in claim 1, characterized in that the covering body is deployed between the fixed part and the movable part in the arrangement direction of the information recording medium of the media connection body, and one end is supported on a shaft so that it can be freely unwound and reeled in while being biased with a constant load in the winding direction around the shaft, thereby being composed of a flexible steel band that can expand and contract in accordance with the relative displacement of the movable part.

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