Device for detecting and recording impulse of locomotive body

Abstract

The utility model provides a device for detecting and recording the impulse of a locomotive body, and belongs to the technical field of locomotive body running impulse detection. The problems that an existing train stability detection means is long in time, high in cost and incapable of being used for normal train operation are solved. Comprising a data recording unit and an impulse detection unit which are split, the data recording unit comprises a data acquisition host and a communication port, and the data acquisition host is connected with a locomotive power supply, the impulse detection unit, a locomotive position detection device and a locomotive state data acquisition port through the communication port. The impulse detection unit is fixed on a locomotive body, and an MEMS three-dimensional acceleration sensor is used for detecting the acceleration of the locomotive in the vertical direction, the transverse direction and the longitudinal direction; the device is applied to locomotive body impulse detection.

Description

Technical Field

[0001] The utility model provides a device for detecting and recording impulses of a locomotive body, belonging to the technical field of detecting impulse conditions during the operation of the locomotive body. Background Art

[0002] Railways are the primary mode of transporting bulk cargo worldwide. Freight trains carry large tractive loads, and the smooth operation of rolling stock is a key indicator of preventing derailment, overturning, coupling breakage, and separation. Currently, train smoothness is primarily measured using dynamometric couplers and wheelsets. These require machining and embedding strain gauges, while dynamometric wheelsets require drilling and embedding strain gauges. This method offers the advantage of calculating the forces acting on the coupler and wheels using bridged strain gauges and algorithms. This allows for analysis of maximum coupler forces and parameters such as the wheelset's derailment coefficient and load reduction ratio, making it a recognized mainstream testing method. However, this testing method also has significant drawbacks. First, it requires regular calibration of the strain gauge output accuracy. This process involves disassembly, transportation, laboratory calibration, and assembly of the coupler and wheelset, a cumbersome process. Disassembly and assembly of large components is particularly time-consuming and poses safety risks. Second, the dynamometer wheelset must be installed on a closed-door vehicle, with no braking permitted, to prevent factors such as excessive temperatures from affecting the strain gauges. Third, the dynamometer coupler and wheelset require numerous connecting wires, making their manufacture complex and costly, both directly and indirectly. Due to these shortcomings, the dynamometer coupler and wheelset testing method is limited to test trains, making it difficult to conduct routine testing and recordkeeping on operating trains. Utility Model Content

[0003] To address the issues of existing train stability detection methods, such as long time consumption, high cost, and impracticality for normal train operation, this utility model proposes a device for detecting and recording locomotive body impulses. This device uses acceleration to detect the overall force applied to the body or large components, i.e., the resultant force. The device is simple to install, does not damage the body or components being tested, and requires minimal or no installation effort, with minimal or no impact on transportation production.

[0004] The technical solution adopted by the utility model is: a device for detecting and recording impulses on a locomotive body, comprising a split data recording unit and an impulse detection unit, wherein the data recording unit comprises a data acquisition host and a communication port, wherein the data acquisition host is connected to a locomotive power supply, an impulse detection unit, a locomotive position detection device and a locomotive status data acquisition port via the communication port, and the impulse detection unit is fixed on the body of the locomotive and adopts a MEMS three-dimensional acceleration sensor to detect the acceleration of the locomotive in the vertical, lateral and longitudinal directions.

[0005] Furthermore, the data recording unit includes a shell, a data acquisition host is installed in the shell, and a communication port is installed at one end of the shell.

[0006] Furthermore, a battery module slot is provided on one side of the shell, and a battery module fixing hole is provided on the battery module slot.

[0007] Furthermore, it also includes a battery module, the data acquisition host is connected to the power interface of the battery module through the communication port, and the battery module is inserted into the battery module slot.

[0008] Furthermore, the impulse detection unit includes a bottom plate with fixing screw holes formed around it, and a MEMS three-dimensional acceleration sensor is mounted on the bottom plate.

[0009] Furthermore, the locomotive position detection device is a locomotive TAX box or LKJ device.

[0010] Furthermore, the locomotive status data acquisition port is a locomotive gateway or an MVB port of a locomotive TCMS network.

[0011] Furthermore, the communication port includes a DC110V power supply port connected to the locomotive power supply port, a DC24V power supply port connected to the battery module, an RS485 communication bus port connected to the locomotive TAX box or LKJ device, an Ethernet port connected to the locomotive gateway, an MVB port connected to the locomotive TCMS network, and a CAN port connected to the impulse detection unit.

[0012] Furthermore, the locomotive data collection host is also connected to a storage module.

[0013] Compared to existing technologies, this utility model offers the following advantages: It utilizes a split-type design capable of detecting the impulsive acceleration of locomotives, vehicle bodies, and key components. This allows for both long-term monitoring and short-term temporary testing. The device is powered by a lithium battery module, facilitating the analysis of the impulsive acceleration experienced by locomotive bodies and key components. The device can also collect locomotive TAX box data and locomotive gateway data, significantly contributing to identifying the causes of locomotive and vehicle impulsive events and improving train operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] Figure 1 It is the overall block diagram of the device of the utility model;

[0016] Figure 2 This is a schematic diagram of the communication port of the data recording unit of the utility model;

[0017] Figure 3This is a schematic diagram of the control module of the data recording unit of the utility model;

[0018] Figure 4 This is a structural diagram of the data recording unit of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the impulse detection unit of the present utility model;

[0020] Figure 6 This is a schematic structural diagram of the battery module of the utility model;

[0021] In the figure: 1 is the data recording unit, 2 is the battery module fixing shell, and 3 is the battery module slot. DETAILED DESCRIPTION

[0022] like Figures 1 to 6 As shown, the present invention provides a device for detecting and recording locomotive body impulses, comprising a data recording unit, an impulse detection unit, a battery module (optional), and a ground processing module. The device employs a separate detection and recording design. The data recording unit not only records the longitudinal, vertical, and lateral values ​​of impulse acceleration, but also records information such as the train's running position, recording time, locomotive traction / power braking force, train pipe pressure, and running speed. The impulse detection unit is used to detect three-dimensional impulse acceleration data of the locomotive, vehicle body, or other large components in real time, and transmits the data to the data recording unit in real time. The battery module is primarily used when detecting freight vehicle bodies or large components. Since existing ordinary freight vehicles lack a power supply, a lithium battery assembly module is used for power supply. The ground processing module reproduces the train's running impulse conditions throughout the entire journey using the data recorded by the data recording unit in the form of a curve.

[0023] The data recording unit is a platform built on an ARM core board, using an embedded Ubuntu system, with a storage capacity of 128G and equipped with CAN, RS485, USB, Ethernet and other ports.

[0024] The data recording unit can be powered by the locomotive DC110V power supply or by a DC24V lithium battery module. Figure 2As shown, X1 port: DC110V power supply port, which is the power supply port for the locomotive; X2 port: DC24V power supply port, which is used to power the lithium battery assembly module; X3 port: RS485 communication bus port, which is used to connect to the TAX2 box or LKJ device to obtain the locomotive position data; X4 port: Ethernet communication port, which is used to connect to the locomotive gateway to obtain the locomotive status data (the locomotive's train pipe pressure, equalizing air cylinder pressure, traction, power braking force and other information can also be collected from the MVB port of the locomotive TCMS network (Train Control and Management System), replacing the locomotive gateway collection solution); X5 port: Communication port with the impulse detection unit, which provides power for the impulse detection unit.

[0025] When the device detects that the X2 port is providing more than 15V DC power, it automatically disconnects the 110V DC power supply to the corresponding circuit of the X1 port. The data recorded by the data recording unit includes longitudinal, vertical, and lateral impulse acceleration values, locomotive TAX2 box data, and locomotive gateway data. All data is recorded synchronously, ensuring data synchronization between different data sources.

[0026] Specifically, the data recording unit can be built based on the M3352 core board, such as Figure 3 As shown, the specific functional parameters are: main frequency 800MHz, operating system: Ubuntu, electronic hard disk: 512MB NandFlash, memory: 512MB DDR3, Ethernet port: 2 channels, RS485-Bus port: 3 channels, CAN-Bus port: 2 channels, T-Flash storage capacity: 256G.

[0027] like Figure 4 As shown, a battery module slot 3 is provided on the side of the housing of the data recording unit 1, and a battery module fixing hole 2 is provided on the battery module slot 3. Figure 6 The battery module is inserted into the battery module slot 3 and fastened to the housing of the data recording unit 1 via bolts passing through the battery module fixing holes 2, thereby integrating the two. A power cable connects the power port on the battery module to the corresponding power port on the data recording unit 1. The battery module can be removed when no longer needed.

[0028] The impulse detection unit uses a MEMS 3D accelerometer to detect vertical, lateral, and longitudinal accelerations of the locomotive, with a range of -0.5G to +0.5G. The nominal power supply voltage is 15V, and the data output port is RS485.

[0029] Its working mode is as follows: after the system is powered on, the impulse detection unit sends the detected real-time acceleration data to the data recording unit. The data acquisition host performs CRC check on the data and then compiles the record information for storage.

[0030] like Figure 5 As shown, the impulse detection unit includes a base plate with fixing screw holes on all sides, and a MEMS three-dimensional acceleration sensor is installed on the base plate. The impulse detection unit has the advantages of small size, light weight, and low power consumption. During long-term testing, it can be fixed to the body of the locomotive vehicle by screws or clips; if temporary testing or short-term phased testing is required, it can be adhered to the surface of the installation location with strong glue.

[0031] The battery module can be used as Figure 6 The lithium battery module shown is an optional component and can be secured and removed using the slides / slots on the side of the data logging unit 1. The flexible cable connector on the lithium battery module provides power to the data logging unit 1 through the X2 port on the data logging unit.

[0032] The utility model has the following advantages:

[0033] 1. Applicable to the impulse detection device of railway locomotives, vehicle bodies and key large components, real-time detection of the three-dimensional acceleration of the detected parts.

[0034] 2. It has two power supply modes: locomotive power supply and lithium battery power supply, which can meet the impulse detection needs of locomotives and vehicles.

[0035] 3. It can comprehensively collect the data of locomotive TAX box and locomotive gateway, and synchronize them with the three-dimensional acceleration values ​​of the detected target to form a record.

[0036] 4. It can reproduce the impulse situation of the entire train operation process in the form of curves.

[0037] 5. The device adopts a split design of impulse detection unit and data recording unit, which improves the applicability of the device.

[0038] Regarding the specific structure of the present invention, it should be noted that the connection relationship between the various component modules adopted in the present invention is definite and feasible. Except for the special instructions in the embodiments, the specific connection relationship can bring about corresponding technical effects and solve the technical problems raised by the present invention without relying on the execution of the corresponding software program. The components, modules, models of specific components appearing in the present invention, the connection methods between each other, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, except for the specific instructions, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technology and common knowledge in this field, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete, and feasible, and the corresponding physical products can be reproduced or obtained based on this technical means.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting and recording locomotive body impulses, characterized in that: It includes a split data recording unit and an impulse detection unit. The data recording unit includes a data acquisition host and a communication port. The data acquisition host is connected to the locomotive power supply, impulse detection unit, locomotive position detection device and locomotive status data acquisition port through the communication port. The impulse detection unit is fixed on the locomotive body and uses a MEMS three-dimensional acceleration sensor to detect the acceleration of the locomotive in the vertical, lateral and longitudinal directions.

2. The device for detecting and recording locomotive body impulses according to claim 1, characterized in that: The data recording unit comprises a shell, a data acquisition host is installed in the shell, and a communication port is installed at one end of the shell.

3. The device for detecting and recording locomotive body impulses according to claim 2, characterized in that: A battery module slot is provided on one side of the shell, and a battery module fixing hole is provided on the battery module slot.

4. The device for detecting and recording locomotive body impulses according to claim 2, characterized in that: It also includes a battery module. The data acquisition host is connected to the power interface of the battery module through the communication port, and the battery module is inserted into the battery module slot.

5. The device for detecting and recording locomotive body impulses according to claim 1 or 4, characterized in that: The impulse detection unit comprises a bottom plate with fixing screw holes formed on all sides, and a MEMS three-dimensional acceleration sensor is mounted on the bottom plate.

6. The device for detecting and recording locomotive body impulses according to claim 5, characterized in that: The locomotive position detection device is a locomotive TAX box or LKJ device.

7. The device for detecting and recording locomotive body impulses according to claim 5, characterized in that: The locomotive status data acquisition port is the locomotive gateway or the MVB port of the locomotive TCMS network.

8. The device for detecting and recording locomotive body impulses according to claim 5, characterized in that: The communication ports include a DC110V power supply port connected to the locomotive power supply port, a DC24V power supply port connected to the battery module, an RS485 communication bus port connected to the locomotive TAX box or LKJ device, an Ethernet port connected to the locomotive gateway, an MVB port connected to the locomotive TCMS network, and a CAN port connected to the impulse detection unit.

9. The device for detecting and recording locomotive body impulses according to claim 5, characterized in that: The locomotive data collection host is also connected to a storage module.

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