An abnormal temperature field diagnosis equipment for EMU contactors
By designing the temperature field abnormality diagnosis equipment of the EMU contactor, using the combination of infrared imager and spherical gimbal, the problem of lack of effective detection methods in the prior art is solved, and accurate detection and fault prediction of the temperature field of the contactor are achieved.
Patent Information
- Application Number
- CN202421429480.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing technology lacks effective detection and prediction methods, which mainly involves replacement when the EMU contactor fails, and there may be problems such as over-inspection and partial failure.
Design a temperature field abnormality diagnosis equipment for EMU contactors, including infrared imager, tablet computer, tablet stand, thermal imager stand and spherical gimbal. The temperature detection is carried out through infrared imager, and combined with the flexible adjustment of spherical gimbal, the abnormal position of the contactor temperature field is accurately detected.
Accurate detection of the temperature field of the EMU contactor is realized, abnormal locations can be identified in a timely manner, excessive inspection is avoided, and the accuracy and efficiency of detection are improved.
Smart Images
Figure CN222748122U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of contactor temperature diagnosis equipment, and in particular relates to abnormal temperature field diagnosis equipment for a motor vehicle contactor. Background Art
[0002] In recent years, the development speed of domestic high-speed trains has been getting faster and faster, and their internal networks and circuit control systems have become increasingly complex, and higher requirements have been placed on circuit automatic control. Contactors are key components of logic control circuits and have the ability to control the on and off of electrical networks. During the operation of high-speed trains, if a contactor fails, it will cause the EMU early warning system to falsely report a fault, causing the train's internal electrical system, traction, and braking systems to fail, thus affecting the normal operation of the EMU.
[0003] There is currently a lack of effective detection and prediction methods for contactor failures on high-speed trains. Nowadays, contactor failures during the operation of EMUs are mainly replaced. During advanced maintenance, specific contactors are replaced in batches according to the maintenance process, which may lead to problems such as over-maintenance and undetected contactors.
[0004] Contactor failure is generally caused by dust, oil and metal oxidation, which increase the contact resistance and thus the contact temperature. Or the wire is not connected properly, which reduces the contact pressure at the connection between the wire and the contactor, resulting in a decrease in the number of conductive spots, an increase in contact resistance and a weak arc, which generates high temperature at the connection between the wire and the contactor.
[0005] In summary, it is necessary to design a device that can diagnose abnormal temperature fields in EMU contactors. Utility Model Content
[0006] The utility model aims to provide a diagnosis device for abnormal temperature field of contactor of a motor vehicle group, so as to solve the above problems existing in the prior art.
[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0008] A device for diagnosing abnormal temperature field of a contactor of a train unit comprises an infrared imager and a tablet computer electrically connected to the infrared imager, and also comprises a tablet bracket, a thermal imager bracket and a ball-type pan-tilt head. The tablet computer and the thermal imager bracket are both mounted on the tablet bracket, the ball-type pan-tilt head is mounted on the thermal imager bracket, and the infrared imager is mounted on the ball-type pan-tilt head.
[0009] As a preferred technical solution in the utility model, the tablet bracket includes a movable tripod and a horizontal support plate, and the horizontal support plate is installed on the vertical pole of the movable tripod; the tablet computer and the thermal imager bracket are both installed on the horizontal support plate.
[0010] As a preferred technical solution in the utility model, the vertical rod of the movable tripod is a telescopic rod, and the length of the telescopic rod is 68-125 cm.
[0011] As a preferred technical solution in the utility model, the thermal imager bracket is a gooseneck tube.
[0012] As a preferred technical solution in the present utility model, the length of the thermal imager bracket is 100 cm.
[0013] As a preferred technical solution in the utility model, the ball head is a ball head capable of rotating the infrared imager 360 degrees horizontally and 90 degrees vertically.
[0014] As a preferred technical solution in the utility model, the infrared imager is an Optris XI400 series infrared imager with a frame rate of 80 Hz. The optical resolution of the infrared imager is 382x288 pixels and the thermal sensitivity is 80 mK.
[0015] As a preferred technical solution in the present invention, the tablet computer is Advantech PWS-872 series industrial tablet computer.
[0016] Beneficial effects: The utility model can ensure the stability of the tablet computer when in use, thereby facilitating real-time observation of the data displayed on the tablet computer, and the infrared imager can flexibly adjust the angle with the help of the ball-type pan / tilt head to perform temperature detection as comprehensively as possible, thereby accurately detecting the abnormal position of the temperature field of the EMU contactor, and then accurately repairing the problematic position. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model.
[0018] In the figure: 1-infrared imager; 2-tablet computer; 3-tablet stand; 31-movable tripod; 32-horizontal support plate; 4-imager stand; 5-ball head. DETAILED DESCRIPTION
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.
[0020] Example:
[0021] like Figure 1 As shown, this embodiment provides an abnormal temperature field diagnosis equipment for a contactor of an EMU, including an infrared imager 1 and a tablet computer 2 electrically connected to the infrared imager 1, and also including a tablet bracket 3, a thermal imager bracket 4 and a ball head 5. The tablet bracket 3 is preferably provided with a pulley at the lower end, and can be quickly moved between train carriages through the pulley. The tablet computer 2 and the thermal imager bracket 4 are both installed on the tablet bracket 3, the ball head 5 is installed on the thermal imager bracket 4, and the infrared imager 1 is installed on the ball head 5, so as to perform temperature detection as comprehensively as possible and facilitate real-time observation of the data displayed on the tablet computer 2.
[0022] The utility model can ensure the stability of the tablet computer 2 when in use, thereby facilitating real-time observation of the data displayed on the tablet computer 2, and the infrared imager 1 can flexibly adjust the angle with the help of the ball-type pan / tilt head 5 to perform temperature detection as comprehensively as possible, thereby accurately detecting the abnormal position of the temperature field of the EMU contactor, and then accurately repairing the problematic position.
[0023] The infrared imager uses an infrared detector, an optical imaging objective lens and an optomechanical scanning system to receive the infrared radiation energy distribution pattern of the target to be measured and reflect it on the photosensitive element of the infrared detector. Between the optical system and the infrared detector, there is an optomechanical scanning mechanism to scan the infrared thermal image of the object to be measured and focus it on a unit or spectroscopic detector. The detector converts the infrared radiation energy into an electrical signal, which is amplified, converted or displayed as a standard video signal through a television screen or monitor.
[0024] When an abnormality occurs in the contactor, the temperature of the abnormal part will rise. The infrared imager is used to collect the contactor temperature image. The collected image is processed by recognition software. The highest temperature in the selected area is compared with the set threshold to determine whether the contactor will have a tendency to fail.
[0025] As a preferred implementation scheme in this embodiment, it needs to be further explained that the tablet bracket 3 includes a movable tripod 31 and a horizontal support plate 32, and the horizontal support plate 32 is installed on the vertical pole of the movable tripod 31 to ensure the stability of the horizontal support plate 32; the tablet computer 2 and the thermal imager bracket 4 are both installed on the horizontal support plate 32 to ensure the stability of the tablet computer 2 and the thermal imager bracket 4.
[0026] As a preferred implementation scheme in this embodiment, it needs to be further explained that the vertical rod of the movable tripod 31 is a telescopic rod, and the length of the telescopic rod is 68-125 cm, which is convenient for flexible adjustment according to actual conditions.
[0027] As a preferred implementation scheme in this embodiment, it needs to be further explained that the thermal imager bracket 4 is a gooseneck tube, which can not only play a supporting role, but also flexibly move the position of the infrared imager 1, thereby improving practicality and making it more convenient to perform comprehensive temperature detection.
[0028] As a preferred implementation scheme in this embodiment, it needs to be further explained that the length of the thermal imager bracket 4 is 100 cm, and when matched with the movable tripod 31, the detection at different height planes is more comprehensive.
[0029] As a preferred implementation scheme in this embodiment, it needs to be further explained that the ball head 5 is a ball head capable of rotating the infrared imager 1 360 degrees horizontally and 90 degrees vertically, so that the adjustment of the infrared imager 1 is more flexible.
[0030] As a preferred implementation scheme in this embodiment, it needs to be further explained that the infrared imager 1 is an Optris XI400 series infrared imager with a frame rate of 80Hz. The optical resolution of the infrared imager 1 is 382x288 pixels and the thermal sensitivity is 80mK, which can detect rapidly changing temperatures and the temperature of small objects at a long distance.
[0031] As a preferred implementation scheme in this embodiment, it needs to be further explained that the tablet computer 2 is Advantech PWS-872 series industrial tablet computer, the tablet CPU is preferably Intel's fifth-generation processor, the memory and storage capacity are 8GB and 120GB respectively, the screen is 10 inches with a resolution of 1920x1080, and the overall weight is 1.4 kg, which meets the requirements of on-site detection and has the characteristics of strong computing power, clear image quality, and easy to carry.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A diagnostic device for abnormal temperature field of a contactor of a train set, comprising an infrared imager (1) and a tablet computer (2) electrically connected to the infrared imager (1), characterized in that: The device also comprises a tablet bracket (3), a thermal imager bracket (4) and a ball-type pan-tilt head (5); the tablet computer (2) and the thermal imager bracket (4) are both mounted on the tablet bracket (3); the ball-type pan-tilt head (5) is mounted on the thermal imager bracket (4); and the infrared imager (1) is mounted on the ball-type pan-tilt head (5).
2. The abnormal temperature field diagnosis equipment of the contactor of a train set according to claim 1 is characterized in that: The tablet support (3) comprises a movable tripod (31) and a horizontal support plate (32), wherein the horizontal support plate (32) is mounted on a vertical pole of the movable tripod (31); and the tablet computer (2) and the thermal imaging camera support (4) are both mounted on the horizontal support plate (32).
3. The abnormal temperature field diagnosis equipment of the contactor of a train set according to claim 2 is characterized in that: The vertical rod of the movable tripod (31) is a telescopic rod, and the length of the telescopic rod is 68-125 cm.
4. A diagnostic equipment for abnormal temperature field of EMU contactor according to any one of claims 1 to 3, characterized in that: The thermal imager bracket (4) is a gooseneck tube.
5. The abnormal temperature field diagnosis equipment of the contactor of a train set according to claim 4 is characterized in that: The length of the thermal imager bracket (4) is 100 cm.
6. The abnormal temperature field diagnosis equipment of the contactor of a train set according to claim 1 is characterized in that: The spherical pan / tilt head (5) is a spherical pan / tilt head capable of rotating the infrared imager (1) 360 degrees horizontally and 90 degrees vertically.
7. The abnormal temperature field diagnosis equipment of the contactor of a train set according to claim 1 is characterized in that: The infrared imager (1) is an Optris XI400 series infrared imager with a frame rate of 80 Hz. The optical resolution of the infrared imager (1) is 382 x 288 pixels and the thermal sensitivity is 80 mK.
8. The abnormal temperature field diagnosis equipment of the contactor of a train set according to claim 1 is characterized in that: The tablet computer (2) is an Advantech PWS-872 series industrial tablet computer.