Device and method for measuring glass deformation of motor train unit in high-altitude environment

Abstract

The invention discloses a motor train unit glass deformation measuring device and method for a high-altitude environment, and relates to the technical field of railway vehicles, and the device comprises a fixed support which is used for being fixedly connected with a motor train floor; the stay wire displacement sensor and the laser displacement sensor are arranged on the fixed bracket; the hardware module is used for converting analog signals obtained by monitoring of the stay wire displacement sensor and the laser displacement sensor into digital signals; the software module is used for receiving the digital signal converted by the hardware module and carrying out glass deformation analysis to obtain a glass displacement value; and the early warning information module is used for issuing early warning information when the glass displacement value is greater than a preset glass displacement threshold value. Based on the requirement of glass displacement measurement of the motor train unit in a high-altitude area, the difficulty in outer glass measurement is solved by utilizing the reflection characteristic of laser displacement, the relative displacement between the displacement sensor and the motor train is overcome through a special tool, the related limit value is analyzed and early warned in real time, and the actual requirement is met.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, specifically to a device and method for measuring the glass deformation of high-speed trains in high-altitude environments. Background Technology

[0002] With the gradual formation of the national "eight vertical and eight horizontal" railway network and the ongoing expansion of the high-speed railway network into high-altitude regions in central and western China, the safety adaptability of high-speed trains operating in high-altitude areas is becoming increasingly important. Currently, the main issue with high-speed trains operating in high-altitude areas is that the side windows bulge to varying degrees towards the passenger compartment and the outside of the train. According to GB / T 39805-2021 "Insulating Glass for High-Speed ​​Trains," the maximum displacement of the glass should not exceed 10mm. Therefore, it is necessary to measure the displacement of the side windows in high-altitude areas relative to low-altitude areas to assess whether the side window glass exceeds the limit or even risks breakage, thus protecting the safety of passengers and railway operations.

[0003] The side window glass structure of the EMU consists of 5mm physically tempered glass, 14mm hollow layer, 4mm physically tempered glass, 0.76mm PVB and 3mm semi-tempered glass, from the outside to the inside of the car. The 14mm hollow cavity of the side window is pre-filled with argon inert gas at 1 atmosphere.

[0004] As the train travels from a low-altitude area to a high-altitude area, the pressure inside the hollow cavity will decrease slightly due to the increased volume of the glass bulging. The pressure values ​​inside and outside the train will decrease to varying degrees as the altitude increases. Therefore, there is a positive pressure difference between the hollow layer and the inside and outside of the train. Moreover, the pressure difference will increase as the altitude increases, which is manifested by the side window glass bulging.

[0005] Current technology involves using laboratory measurements to determine the difference between the theoretical atmospheric pressure at the highest altitude and the theoretical pressure inside the glass cavity. By controlling this pressure difference, air is injected into the glass cavity to calculate the theoretical maximum displacement. However, this method fails to account for the actual operating conditions of the high-speed train, such as train speed, tunnel conditions, and ambient temperature and humidity, as well as the actual decrease in pressure within the glass cavity. Therefore, it cannot accurately assess the safety and breakage risk of the glass, making it impossible to verify with data whether high-speed trains can safely operate on high-altitude lines.

[0006] Therefore, to meet practical needs, a technology for measuring the glass deformation of high-speed trains in high-altitude environments is now provided. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this application is to provide a device and method for measuring glass deformation in high-altitude environments for high-speed trains. Based on the need for glass displacement measurement in high-altitude areas of high-speed trains, and considering the special application scenarios of train operation, the application utilizes the reflective characteristics of laser displacement to solve the difficulty of measuring the outer glass layer. Furthermore, it overcomes the relative displacement between the displacement sensor and the train through special tooling, and uses software to analyze and warn relevant limits in real time, thus meeting practical needs.

[0008] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0009] In a first aspect, this application provides a device for measuring the glass deformation of high-speed trains in high-altitude environments, the device comprising:

[0010] Fixed brackets for fixed connection with the floor of the train;

[0011] A wire displacement sensor and a laser displacement sensor are mounted on the fixed bracket;

[0012] A hardware module, which is connected to the wire displacement sensor and the laser displacement sensor, is used to convert the analog signals monitored and obtained by the wire displacement sensor and the laser displacement sensor into digital signals;

[0013] The software module receives the digital signal converted by the hardware module, performs glass deformation analysis, and obtains the glass displacement value.

[0014] The early warning information module is used to issue an early warning information when the glass displacement value exceeds a preset glass displacement threshold; wherein,

[0015] The wire displacement sensor and the laser displacement sensor are arranged side by side in the vertical direction or side by side in the horizontal direction;

[0016] The plane in which the wire displacement sensor and the laser displacement sensor are located is parallel to the vertical direction.

[0017] Based on the above technical solution, the software module is also used to measure the distance between the wire displacement sensor and the side window glass inside the vehicle, and record it as the first distance;

[0018] The software module is also used to measure the distance between the laser displacement sensor and the side window glass on the outside of the vehicle, and record it as the second distance;

[0019] The warning information module is also used to issue a warning when the first distance is greater than a preset first glass displacement threshold or the second distance is greater than a preset second glass displacement threshold.

[0020] Secondly, this application provides a measurement method based on the high-altitude environment high-speed train glass deformation measurement device mentioned in the first aspect, the method comprising the following steps:

[0021] The fixed bracket is fixedly installed on the floor of the train set to be tested.

[0022] The wire displacement sensor and the laser displacement sensor are arranged side by side in the vertical direction or parallel to the length direction of the train floor.

[0023] Connect the measuring end of the wire displacement sensor to the side window glass located on the inside of the train set under test;

[0024] The measuring end of the laser displacement sensor is positioned facing the side window glass on the outside of the train set to be tested;

[0025] A flat piece of paper with a reflective surface is installed on the outside of the side window glass on the outside of the vehicle.

[0026] The distance between the wire displacement sensor and the side window glass inside the vehicle is measured and recorded as the first distance.

[0027] The distance between the laser displacement sensor and the side window glass on the outside of the vehicle is measured and recorded as the second distance;

[0028] When the first distance is greater than a preset first glass displacement threshold or the second distance is greater than a preset second glass displacement threshold, an early warning message is issued.

[0029] Compared with the prior art, the advantages of this application are:

[0030] Based on the need for glass displacement measurement in high-altitude areas of high-speed trains, this application considers the special application scenarios of high-speed train operation, utilizes the reflection characteristics of laser displacement to solve the difficulty of measuring the outer glass, overcomes the relative displacement between the displacement sensor and the high-speed train through special tooling, and analyzes and warns relevant limits in real time through software to meet actual needs. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram illustrating the implementation status of the high-altitude train glass deformation measuring device according to an embodiment of this application.

[0033] Figure 2 This is a schematic diagram illustrating the technical principle of a high-altitude train glass deformation measuring device according to an embodiment of this application.

[0034] Figure 3 This is a schematic diagram of the structure of the high-speed train glass that the high-altitude environment glass deformation measuring device for this application embodiment addresses.

[0035] Figure 4 This is a schematic diagram of the assembly structure of the EMU glass to be used by the EMU glass deformation measuring device for high-altitude environments according to an embodiment of this application.

[0036] Figure 5 This is a schematic diagram of the deformation state of the train glass in response to the high-altitude environment glass deformation measuring device of this application embodiment.

[0037] In the picture:

[0038] 1. Fixed bracket; 2. Wire displacement sensor; 3. Laser displacement sensor; A. Vehicle side wall; B. Insulating glass; C. Bosch sealant; D. Bosch structural adhesive; E. Bosch structural adhesive. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0041] This application provides a device and method for measuring glass deformation in high-altitude environments for high-speed trains. Based on the need for glass displacement measurement in high-altitude areas of high-speed trains, and considering the special application scenarios of train operation, the method utilizes the reflection characteristics of laser displacement to solve the difficulty of measuring the outer glass layer. It also overcomes the relative displacement between the displacement sensor and the train through special tooling, and uses software to analyze and warn relevant limits in real time to meet actual needs.

[0042] To achieve the aforementioned technical effects, the overall concept of this application is as follows:

[0043] A device for measuring the glass deformation of high-speed trains in high-altitude environments, the device comprising:

[0044] 1. Fixed bracket for fixed connection with the floor of the train;

[0045] The wire displacement sensor 2 and the laser displacement sensor 3 are mounted on the fixed bracket 1;

[0046] A hardware module, which is connected to the wire displacement sensor 2 and the laser displacement sensor 3, is used to convert the analog signals monitored by the wire displacement sensor 2 and the laser displacement sensor 3 into digital signals.

[0047] The software module receives the digital signal converted by the hardware module, performs glass deformation analysis, and obtains the glass displacement value.

[0048] The early warning information module is used to issue an early warning information when the glass displacement value exceeds a preset glass displacement threshold; wherein,

[0049] The wire displacement sensor 2 and the laser displacement sensor 3 are arranged side by side in the vertical direction or side by side in the horizontal direction;

[0050] The planes on which the wire displacement sensor 2 and the laser displacement sensor 3 are located are parallel to the vertical direction.

[0051] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0052] Firstly, see [the following] Figures 1-5 As shown in the figure, this application provides a device for measuring the glass deformation of high-speed trains in high-altitude environments. The device includes:

[0053] 1. Fixed bracket for fixed connection with the floor of the train;

[0054] The wire displacement sensor 2 and the laser displacement sensor 3 are mounted on the fixed bracket 1;

[0055] A hardware module, which is connected to the wire displacement sensor 2 and the laser displacement sensor 3, is used to convert the analog signals monitored by the wire displacement sensor 2 and the laser displacement sensor 3 into digital signals.

[0056] The software module receives the digital signal converted by the hardware module, performs glass deformation analysis, and obtains the glass displacement value.

[0057] The early warning information module is used to issue an early warning information when the glass displacement value exceeds a preset glass displacement threshold; wherein,

[0058] The wire displacement sensor 2 and the laser displacement sensor 3 are arranged side by side in the vertical direction or side by side in the horizontal direction;

[0059] The planes on which the wire displacement sensor 2 and the laser displacement sensor 3 are located are parallel to the vertical direction.

[0060] Specifically, the software module will use the wire displacement sensor 2 to measure the distance between it and the side window glass inside the vehicle, and record it as the first distance;

[0061] The software module will use the laser displacement sensor 3 to measure the distance between it and the side window glass on the outside of the vehicle, and record it as the second distance;

[0062] The early warning information module is used to issue early warning information when the first distance is greater than a preset first glass displacement threshold or the second distance is greater than a preset second glass displacement threshold.

[0063] In this embodiment, based on the need for glass displacement measurement in high-altitude areas of high-speed trains and considering the special application scenarios of train operation, the reflection characteristics of laser displacement are used to solve the difficulty of measuring the outer glass. Special tooling is used to overcome the relative displacement between the displacement sensor and the train, and software is used to analyze and warn relevant limits in real time to meet actual needs.

[0064] It should be noted that the device provided by the technical solution of this application embodiment is implemented in real time during the operation of the train. All external factors affecting the glass bulging are taken into account. No ideal assumptions are made compared with laboratory tests, such as train speed, tunnel (group) and weather temperature and humidity.

[0065] Due to track safety considerations, no sensors of any kind can be installed on the outer glass of the side windows during train operation. Therefore, a laser displacement sensor 3 installed in the passenger compartment emits a laser that passes through the inner layer, the hollow layer and the outer layer. A flat paper with a reflective surface is attached to the outermost layer, and the laser then passes through the outer layer, the hollow layer and the inner layer in sequence and is reflected back into the laser displacement sensor 3 to ensure that effective displacement data is collected.

[0066] The analog signals from the wire displacement sensor 2 and the laser displacement sensor 3 are amplified and filtered before entering the A / D module, where the analog displacement signals are converted into digital signals. Then, the digital displacement signals are transmitted to the software module via the signal sending module and the signal transmission module.

[0067] The software module receives the signal, filters it, and then processes and analyzes it to output the real-time glass displacement value. This value is then sent to the warning information module, which compares it with the preset limit in real time to determine whether the glass displacement value exceeds the limit.

[0068] Specifically, as shown in the attached diagram of the instruction manual. Figure 1 The diagram shown is a schematic representation of the implementation status of the technical solution in this application.

[0069] As shown in the attached diagram of the instruction manual. Figure 2The diagram shown is a technical principle framework diagram of the technical solution of the embodiment of this application;

[0070] As shown in the attached diagram of the instruction manual. Figure 3 As shown, it is a structural schematic diagram of the EMU glass addressed by the technical solution of this application embodiment;

[0071] As shown in the attached diagram of the instruction manual. Figure 4 As shown, it is a schematic diagram of the assembly structure of the EMU glass addressed by the technical solution of this application embodiment;

[0072] As shown in the attached diagram of the instruction manual. Figure 5 As shown, it is a schematic diagram of the deformation state of the train set glass as addressed by the technical solution of the embodiment of this application.

[0073] It should be noted that, Figure 5 In the diagram, A represents the side wall of the vehicle body, B represents the insulated glass, C represents Boss sealant, D represents Boss structural adhesive, and E represents Boss structural adhesive.

[0074] Secondly, embodiments of this application provide a measurement method based on the high-altitude environment high-speed train glass deformation measurement device mentioned in the first aspect, the method comprising the following steps:

[0075] The fixed bracket 1 is fixedly installed on the floor of the train set to be tested;

[0076] The wire displacement sensor 2 and the laser displacement sensor 3 are arranged side by side in the vertical direction or parallel to the length direction of the train floor.

[0077] Connect the measuring end of the wire displacement sensor 2 to the side window glass located on the inside of the train set under test;

[0078] The measuring end of the laser displacement sensor 3 is positioned facing the side window glass on the outside of the train set to be tested.

[0079] A flat piece of paper with a reflective surface is installed on the outside of the side window glass on the outside of the vehicle.

[0080] The distance between the wire displacement sensor 2 and the side window glass inside the vehicle is measured and recorded as the first distance;

[0081] The distance between the laser displacement sensor 3 and the side window glass on the outside of the vehicle is measured and recorded as the second distance;

[0082] When the first distance is greater than a preset first glass displacement threshold or the second distance is greater than a preset second glass displacement threshold, an early warning message is issued.

[0083] In this embodiment, based on the need for glass displacement measurement in high-altitude areas of high-speed trains and considering the special application scenarios of train operation, the reflection characteristics of laser displacement are used to solve the difficulty of measuring the outer glass. Special tooling is used to overcome the relative displacement between the displacement sensor and the train, and software is used to analyze and warn relevant limits in real time to meet actual needs.

[0084] It should be noted that the technical solution of this application embodiment is implemented as follows:

[0085] Set up the relevant hardware and configure the relevant software parameters;

[0086] When a high-speed train stops at a station in a low-altitude area, the displacement signals inside and outside the train are reset to zero.

[0087] Start the system and record data, then display the displacement curve in real time.

[0088] The high-speed train stops at a station in a high-altitude area and ceases data recording.

[0089] The method for measuring the deformation of high-speed train glass in high-altitude environments provided in this application embodiment adopts the same technical principle as the device for measuring the deformation of high-speed train glass in high-altitude environments mentioned in the first aspect in terms of technical problems, technical solutions, and technical effects, so it will not be described in detail here.

[0090] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0091] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0092] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A bullet train glass deformation measuring device for high altitude environment, characterized in that, The device comprises: a fixed support (1) for fixed connection with the floor of the motor train; a wire displacement sensor (2) and a laser displacement sensor (3) arranged on the fixed support (1); a hardware module connected in signal with the wire displacement sensor (2) and the laser displacement sensor (3) for converting analog signals obtained by the wire displacement sensor (2) and the laser displacement sensor (3) into digital signals; a software module receiving the digital signals converted by the hardware module, performing glass deformation analysis, and obtaining a glass displacement value; a warning information module for issuing a warning information when the glass displacement value is greater than a preset glass displacement threshold value; wherein, the wire displacement sensor (2) and the laser displacement sensor (3) are arranged side by side in a vertical direction or side by side in a horizontal direction; the plane where the wire displacement sensor (2) and the laser displacement sensor (3) are located is parallel to the vertical direction.

2. The motor train glass deformation measuring device for high-altitude environment according to claim 1, wherein: the software module is further configured to measure the distance between the wire displacement sensor (2) and the side window glass on the inside of the vehicle as a first distance; the software module is further configured to measure the distance between the laser displacement sensor (3) and the side window glass on the outside of the vehicle as a second distance; the warning information module is further configured to issue a warning information when the first distance is greater than a preset first glass displacement threshold value or the second distance is greater than a preset second glass displacement threshold value.

3. A measurement method of the high-altitude environment-oriented EMU glass deformation measurement device according to any one of claims 1 to 2, characterized by, The method comprises the following steps: fixing the fixed support (1) on the floor of the motor train to be measured; arranging the wire displacement sensor (2) and the laser displacement sensor (3) side by side in a vertical direction or parallel to the length direction of the floor of the motor train; connecting the measuring end of the wire displacement sensor (2) with the side window glass on the inside of the vehicle of the motor train to be measured; directing the measuring end of the laser displacement sensor (3) to the side window glass on the outside of the vehicle of the motor train to be measured; arranging a plane paper with a reflecting surface outside the side window glass on the outside of the vehicle; measuring the distance between the wire displacement sensor (2) and the side window glass on the inside of the vehicle as a first distance; measuring the distance between the laser displacement sensor (3) and the side window glass on the outside of the vehicle as a second distance; issuing a warning information when the first distance is greater than a preset first glass displacement threshold value or the second distance is greater than a preset second glass displacement threshold value.

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