Multipoint state monitoring device for contact line of electrified railway

Abstract

The invention discloses an electrified railway contact line multi-point state monitoring device, and relates to the technical field of pantograph-catenary systems, the electrified railway contact line multi-point state monitoring device comprises a monitoring group, the monitoring group comprises an area-array camera, a data acquisition instrument and a local upper computer, the area-array camera is arranged towards a positioning point and a dropper point of a contact line, and the data acquisition instrument is connected with the local upper computer; the horizontal height of the area-array camera is higher than or lower than that of the contact line, and the area-array camera is electrically connected with a local upper computer through a data acquisition instrument; according to the invention, the area-array camera can be used for synchronously monitoring the positioning point and the dropper point to obtain the dynamic characteristics of the multi-point position, so that the monitoring effect is improved, and meanwhile, the area-array camera does not need to be arranged on the pantograph, can be arranged on one side of the contact line, is not restricted by vehicle movement and plans, can be used for monitoring in real time, and improves the application range.

Description

Technical Field

[0001] This invention relates to the field of pantograph-catenary system technology, and in particular to a multi-point status monitoring device for the contact wire of electrified railways. Background Technology

[0002] In electrified railways, the overhead contact line-pantograph system (pantograph-catenary system) is the only channel for providing electrical energy to trains. Specifically, the pantograph slides and contacts the contact wire through a sliding plate, transmitting current from the overhead contact line to the pantograph, which then supplies the train. During train operation, the pantograph and the contact wire maintain dynamic contact to ensure stable current transmission. Therefore, the dynamic characteristics of the contact wire directly affect the quality of current collection for the train.

[0003] During high-speed operation, the dynamic characteristics at the contact points on the overhead contact line are one of the weak points of the pantograph-catenary system, directly affecting train speed and driving safety. The applicant knows that the dynamic characteristics at the contact points are mainly measured by sensors installed on the pantograph in a contact manner. This detection method has the following disadvantages: 1) It can only measure the dynamic characteristics of the pantograph contact points and cannot analyze the vibration at other locations caused by wave propagation, and the detection accuracy is very limited; 2) The speed of the dynamic detection vehicle is limited, and it cannot analyze the system characteristics at higher speeds; 3) It is constrained by the detection plan, and the detection period and monitoring location are very limited.

[0004] Therefore, there is an urgent need for a multi-point status monitoring device for electrified railway contact lines that has good monitoring performance and a wide range of applications. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-point status monitoring device for the contact line of electrified railways to solve the problems existing in the prior art. It utilizes an area array camera to acquire data over a large area, thereby improving the monitoring effect. At the same time, it is not restricted by the vehicle and has a wide range of applications.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a multi-point status monitoring device for the contact line of an electrified railway, comprising a monitoring group, the monitoring group comprising an area array camera, a data acquisition instrument, and a local host computer, the area array camera being positioned toward the positioning point and the dropper point of the contact line, the horizontal height of the area array camera being higher or lower than the horizontal height of the contact line, and the area array camera being electrically connected to the local host computer through the data acquisition instrument.

[0007] Preferably, the multi-point status monitoring device for the electrified railway contact line further includes a temperature sensor, which is positioned close to the contact line.

[0008] Preferably, both the temperature sensor and the area array camera are connected to a clock synchronization device.

[0009] Preferably, the multi-point status monitoring device for the electrified railway contact line further includes a wind power generation system, wherein the wind power generation system, the area array camera, the data acquisition instrument, and the local host computer are all electrically connected to the battery.

[0010] Preferably, the multi-point status monitoring device for the electrified railway contact line further includes a solar power generation system, which is electrically connected to the battery.

[0011] Preferably, the area array camera is connected to the rotating end of an electric rotating device or a mechanical rotating device.

[0012] Preferably, multiple area scan cameras are provided, and the multiple area scan cameras are arranged in an arc shape.

[0013] Preferably, the positioning points and suspension points of the contact wire are covered with calibration labels.

[0014] Preferably, the multi-point status monitoring device for the electrified railway contact line further includes a wireless transmission device, which is connected to the local host computer.

[0015] Preferably, multiple monitoring groups are spaced apart along the length of the contact line.

[0016] The present invention achieves the following main technical effects compared to the prior art:

[0017] Using area array cameras, positioning points and dropper points can be monitored simultaneously to obtain the dynamic characteristics of multiple positions, thereby improving the monitoring effect. At the same time, area array cameras do not need to be installed on the pantograph; they can be installed on the side of the contact wire, which is not restricted by vehicle movement or planning. They can monitor in real time, thus improving the applicability.

[0018] Other solutions of the present invention achieve the following technical effects compared with the prior art:

[0019] Temperature sensors can monitor temperature data in real time, thereby detecting abnormal temperature conditions and temperature rises, thus improving monitoring effectiveness.

[0020] By using a clock synchronization device, the time stamps of the temperature sensor and the area scan camera measurement data are kept consistent, laying the foundation for data analysis.

[0021] Calibration tags can be used to calibrate coordinates, thereby improving monitoring accuracy.

[0022] Rotating the area array camera or arranging multiple area array cameras in an arc shape can increase the monitoring range and improve the monitoring effect.

[0023] Using wireless transmission devices, real-time wireless transmission can be achieved, enabling 24 / 7 monitoring and unattended local operation.

[0024] Multiple monitoring groups can achieve multi-point monitoring, or they can use a local host computer to perform joint analysis of multiple sets of monitoring data at the same time, thereby improving monitoring accuracy. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the multi-point status monitoring device for the contact line of an electrified railway monitoring system, which monitors three points to be measured, in an embodiment of the present invention.

[0027] The components include: 1. Area array camera; 2. Data acquisition instrument; 3. Local host computer; 4. Temperature sensor; 5. Clock synchronization device; 6. Wind turbine; 7. Solar panel; 8. Wind-solar hybrid controller; 9. Storage battery; 10. Calibration tag; 11. Wireless transmission device; 12. Contact wire; 13. Column. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide a multi-point status monitoring device for the contact line of electrified railways to solve the problems existing in the prior art. It utilizes an area array camera to acquire data over a large area, thereby improving the monitoring effect. At the same time, it is not restricted by the vehicle and has a wide range of applications.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Please refer to the following: Figure 1As shown, a multi-point status monitoring device for the contact line of an electrified railway is provided, including a monitoring group comprising an area array camera 1, a data acquisition instrument 2, and a local host computer 3. The area array camera 1 is positioned facing the positioning point and dropper point of the contact line 12 to acquire the dynamic characteristics of multiple positions, thereby improving the monitoring effect. The area array camera 1 can be directly installed on the column 13 of the contact network system, or a separate support column can be erected to support the area array camera 1. It does not need to be installed on the pantograph and is not constrained by vehicle movement or schedules. It can perform real-time monitoring, thus improving the applicability. The horizontal height of the area array camera 1 is higher or lower than the horizontal height of the contact line 12, and it takes pictures of the contact line 12 at an inclined angle to better capture the dynamic characteristics of the points to be measured. The area array camera 1 is electrically connected to the local host computer 3 through the data acquisition instrument 2. The local host computer 3 analyzes the data captured by the area array camera 1 acquired by the data acquisition instrument 2 to obtain the dynamic characteristics of the monitoring points. The main dynamic characteristic analyzed is the vibration of the contact line 12. The vibration amplitude is determined by acquiring the vibration displacement of the contact line 12.

[0032] The local host computer 3 can be connected to the audible and visual alarm to provide an alarm prompt when the monitored dynamic characteristics are abnormal.

[0033] In one embodiment, to improve the monitoring effect, an additional temperature sensor 4 is provided. The temperature sensor 4 is located near the contact wire 12. Specifically, the temperature sensor 4 can be set on the column 13 of the contact wire system or on a separately established support to obtain temperature data around the contact wire 12, thereby obtaining abnormal temperature conditions and temperature rise, and improving the monitoring effect. The temperature sensor 4 is electrically connected to the data acquisition instrument 2, so that the data can be transmitted to the local host computer 3 for analysis through the data acquisition instrument 2.

[0034] Temperature sensor 4 can be directly mounted on area scan camera 1 without affecting the shooting of area scan camera 1.

[0035] Temperature sensor 4 and area array camera 1 are both located on the side of contact wire 12 and are spaced apart from contact wire 12 to avoid affecting the normal operation of pantograph-catenary system.

[0036] Temperature sensor 4 and area scan camera 1 are both connected to clock synchronization device 5. Using clock synchronization device 5, the time stamps of the measurement data of temperature sensor 4 and area scan camera 1 are kept consistent, laying the foundation for data analysis.

[0037] In one embodiment, a wind power generation system is also provided. The wind power generation system, the area array camera 1, the data acquisition instrument 2, and the local host computer 3 are all electrically connected to the storage battery 9. The wind power generation system can generate electricity through wind power and store the electrical energy using the storage battery 9, which is then supplied to the area array camera 1, the data acquisition instrument 2, and the local host computer 3 to achieve self-powered operation. This allows the entire monitoring group to be flexibly deployed in various scenarios where the power grid system is difficult to deploy, such as remote mountainous areas.

[0038] The wind turbine 6 of the wind power generation system can be installed on the column 13 of the overhead contact system, or the wind turbine 6 can be supported by a separate support column.

[0039] In one embodiment, a solar power generation system is also provided. The solar power generation system is electrically connected to the storage battery 9 and uses solar energy to generate electricity to supply the storage battery 9, further improving the overall device's self-power supply capability. The solar panels 7 of the solar power generation system can be installed on the columns 13 of the contact network system, or on separately designed pillars, or on the surrounding ground.

[0040] When both solar power generation systems and wind power generation systems are installed, they are connected to the battery 9 through a wind-solar hybrid controller 8.

[0041] In one embodiment, the area scan camera 1 is connected to the rotating end of an electric rotating device or a mechanical rotating device. The electric rotating device is a rotary motor, and the area scan camera 1 is mounted on the rotating end of the rotary motor. The mechanical rotating device may include a rotating platform and a rotating base. The rotating platform is rotatably mounted on the rotating base via bearings. In this case, the area scan camera 1 can be mounted on the rotating platform, and the rotation of the area scan camera 1 can be achieved by manually adjusting the rotating platform. Alternatively, other devices capable of rotating the area scan camera 1 can be used to drive the area scan camera 1 to rotate.

[0042] When a rotating stage and a rotating base are used to drive the area array camera 1 to rotate, a corresponding locking structure can be set to lock the rotational position between the rotating stage and the rotating base. For example, a vertical plate can be set on the rotating base corresponding to the outer periphery of the rotating stage, with a through hole on the vertical plate and multiple holes on the circumference of the rotating stage. Each hole can be rotated to correspond to the through hole. At this time, a rod can be inserted into the hole after passing through the through hole to complete the locking. When rotation is needed, the rod can be pulled out. Of course, other locking structures can also be used to replace the vertical plate, with the aim of achieving locking and unlocking of the rotating stage and the rotating base.

[0043] When temperature sensor 4 is installed on the column 13 of the contact wire, temperature sensor 4 is installed on the rotating end of the rotating device and rotates together with the area scan camera 1.

[0044] In one embodiment, multiple area scan cameras 1 are provided, and the multiple area scan cameras 1 are arranged in an arc shape to achieve wide-angle shooting.

[0045] When temperature sensor 4 is installed on the contact wire post 13, multiple temperature sensors 4 are arranged in an arc shape to match multiple area array cameras 1.

[0046] Whether it is designing a rotating device to drive the area array camera 1 to rotate, or setting multiple area array cameras 1 in an arc shape, the monitoring range can be increased, thereby improving the monitoring effect.

[0047] In one embodiment, the area array camera 1 and the temperature sensor 4 can be designed to be mounted on the rotating end, column 13 or support of the rotating device via a ball joint structure with locking function, so as to adjust the orientation of the area array camera 1.

[0048] In one embodiment, the positioning point and the dropper point of the contact wire 12 are covered with a calibration label 10, which can calibrate coordinates (e.g., as the origin coordinates of calibration when the contact wire 12 is stationary), thereby improving monitoring accuracy.

[0049] In one embodiment, a wireless transmission device 11 is also provided. The wireless transmission device 11 is electrically connected to the local host computer 3 and can transmit the analysis information of the local host computer 3 to the remote terminal, so as to achieve all-weather monitoring and local unattended operation.

[0050] The data acquisition device 2, local host computer 3, wireless transmission device 11, wind-solar hybrid controller 8, and battery 9 can be installed on the base of the column 13 of the contact network system, and can be protected by a protective shell. Ventilation louvers can be opened on the protective shell for ventilation and heat dissipation.

[0051] In one embodiment, multiple monitoring groups are spaced apart along the length of the contact line 12, which can realize multi-point monitoring and also use the local host computer 3 to realize joint analysis of multiple sets of monitoring data at the same time, thereby improving monitoring accuracy.

[0052] In actual use, install each component and check whether each component is working properly. Connect the calibration tag 10 to the position to be tested (positioning point and suspension point), start the device to start monitoring. During the monitoring process, the monitoring data of the area array camera 1 and temperature sensor 4 are transmitted to the local host computer 3 through the data acquisition instrument 2 for analysis, and transmitted to the remote terminal through the wireless transmission device 11. The analysis structure can be used to determine whether an abnormality has occurred, and an automatic alarm will be triggered when an abnormality occurs.

[0053] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0054] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A multi-point condition monitoring device for the contact wire of an electrified railway, characterized in that, The system includes a monitoring group, which comprises an area array camera, a data acquisition unit, and a local host computer. The area array camera is positioned facing the positioning point and the suspension point of the contact line. The horizontal height of the area array camera is higher or lower than the horizontal height of the contact line. The area array camera is electrically connected to the local host computer through the data acquisition unit.

2. The multi-point status monitoring device for electrified railway contact lines according to claim 1, characterized in that, The multi-point status monitoring device for the electrified railway contact line also includes a temperature sensor, which is positioned close to the contact line.

3. The multi-point status monitoring device for electrified railway contact lines according to claim 2, characterized in that, Both the temperature sensor and the area scan camera are connected to a clock synchronization device.

4. The multi-point status monitoring device for electrified railway contact lines according to claim 1, characterized in that, The electrified railway contact line multi-point status monitoring device also includes a wind power generation system, and the wind power generation system, the area array camera, the data acquisition instrument and the local host computer are all electrically connected to the storage battery.

5. The multi-point status monitoring device for electrified railway contact lines according to claim 4, characterized in that, The multi-point status monitoring device for the electrified railway contact line also includes a solar power generation system, which is electrically connected to the battery.

6. The multi-point status monitoring device for electrified railway contact lines according to claim 1, characterized in that, The area array camera is connected to the rotating end of an electric or mechanical rotating device.

7. The multi-point status monitoring device for electrified railway contact lines according to claim 1, characterized in that, The area scan camera is provided in multiple ways, and the multiple area scan cameras are arranged in an arc shape.

8. The multi-point status monitoring device for electrified railway contact lines according to claim 1, characterized in that, The positioning points of the contact wire and the suspension points are covered with calibration labels.

9. The multi-point status monitoring device for electrified railway contact lines according to claim 1, characterized in that, The electrified railway contact line multi-point status monitoring device also includes a wireless transmission device, which is connected to the local host computer.

10. The multi-point status monitoring device for electrified railway contact lines according to claim 1, characterized in that, Multiple monitoring groups are spaced apart along the length of the contact line.

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