Vehicle-mounted subway door V-degree monitoring device
By using an onboard subway door V-degree monitoring device that combines rollers and sensors, the problems of low accuracy and low efficiency in door V-degree measurement in existing technologies have been solved, achieving high-precision and high-efficiency door status monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SONGYANG COUNTY DIGITAL HIGHWAY ENGINEERING RESEARCH INSTITUTE
- Filing Date
- 2025-07-18
- Publication Date
- 2026-05-12
AI Technical Summary
In existing technologies, the measurement of V-degree of subway doors relies on manual operation, which is inaccurate and inefficient, making it difficult to meet the monitoring requirements of high precision and high efficiency.
Design an on-board subway door V-degree monitoring device, which combines rollers and sensors. The rollers measure the door displacement and convert it into an electrical signal. The DC-DC voltage conversion module and data processing control board are used for accurate calculation and display, so as to realize the real-time monitoring of the door V-degree.
It achieves high-precision real-time monitoring of the V-degree of the car door, reduces measurement costs, improves measurement accuracy and efficiency, and enables operators to detect abnormalities in a timely manner.
Smart Images
Figure CN224230882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of subway door detection technology, specifically to an on-board subway door V-degree monitoring device. Background Technology
[0002] With the rapid development of urban rail transit, the safety and reliability of subway door systems are receiving increasing attention. As a crucial passageway for passengers boarding and alighting, the normal operation of subway doors directly impacts passenger safety and the smooth operation of trains. Currently, door status identification is primarily monitored through two aspects: onboard door controller detection and periodic inspections at the depot. The onboard door controller, installed inside the door cover above the door panel, typically uses multiple door opening / closing signals, door open / closed signals, and door locked / closed signals to determine whether the door is properly closed and locked, thus identifying the door status. Periodic inspections at the depot involve manually measuring the door's V-degree with a measuring tape to identify the door status and manually adjusting the door's mechanical structure to repair doors with abnormal data.
[0003] In actual measurements, measuring tapes are mostly used. The measured values are then calculated to obtain the V-degree dimension of the door. Since machine measurement relies on the operator's feel and experience, the results of a single adjustment of parameters often do not meet the specifications, thus requiring repeated measurements, which is inefficient. In addition, measuring tapes have low accuracy and large errors. Utility Model Content
[0004] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide a vehicle-mounted subway door V-degree monitoring device.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a vehicle-mounted subway door V-degree monitoring device, comprising a measuring unit, wherein the measuring unit is installed on the car body, and there are at least two measuring units, located at the upper and lower parts of the door along the height direction of the door, respectively, to measure the horizontal length values of the upper and lower parts of the door during the opening process; wherein the measuring unit includes,
[0006] Rollers, the rollers being located at the upper and lower parts of the vehicle door, the rollers abutting against the vehicle door;
[0007] The outer casing is fixedly installed on the carriage, and the rollers are rotatably mounted on the outer casing;
[0008] A shaft, wherein the roller is rotatably mounted on the outside of the shaft, and the shaft is slidably mounted on the outer casing;
[0009] A spring, disposed within a housing, positioned between the roller and the housing, the spring providing a contact force between the roller and the door;
[0010] A sensor, mounted on the housing, converts the circumference of the roller rotation into an electrical signal;
[0011] It also includes a DC-DC voltage conversion module, which is connected to the sensor's electrical signal;
[0012] A data processing control board, which is electrically connected to a DC-DC voltage conversion module;
[0013] The data display module is electrically connected to the data processing control board.
[0014] Furthermore, it also includes a base for securing the outer casing, the base being a grooved metal, and the outer casing being snapped into the groove.
[0015] Furthermore, the diameter of the roller is 50mm.
[0016] Furthermore, it also includes a power module, which is installed on the carriage or the door, and the power module is electrically connected to the data processing control board.
[0017] Furthermore, the power module also includes a battery connected between the charging module and the DC-DC power conversion module.
[0018] Furthermore, it also includes a calibration fixture that provides a constant distance for roller ranging, wherein the calibration fixture is equipped with a 10*2*π*25mm roller ranging fixture with a graduated scale.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: the roller is located at the upper or lower part of the car door, responsible for contacting and measuring the displacement of the corresponding position of the car door; the sensor can convert the rotation circumference of the roller into an electrical signal; the DC-DC voltage conversion module is responsible for converting the voltage value input by the sensor through the electrical signal to adapt to the working voltage range of the data processing control board; after receiving the converted electrical signal, the data processing control board performs signal processing and calculation to determine whether the value of the upper displacement of the car door minus the lower displacement of the car door is between 1 mm and 1.5 mm; the data display module displays the displacement value exceeding this range in real time according to the output of the data processing control board, so that the operator can intuitively monitor and observe abnormal situations. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a top view of the overall structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the measuring structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the electrical control process of this utility model.
[0024] In the diagram: 1. Measuring section; 11. Roller; 12. Housing; 13. Shaft; 14. Spring; 15. Sensor; 2. Carriage; 3. Door; 4. Base. Detailed Implementation
[0025] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] Please see Figure 1 and Figure 2 This embodiment provides a vehicle-mounted subway door 3V degree monitoring device, including a measuring unit 1, which is installed on the car 2. There are at least two measuring units 1, located at the upper and lower parts of the door 3 along the height direction of the door, respectively, so as to measure the horizontal length values of the upper and lower parts of the door 3 during the opening process of the door 3; by measuring the displacement length of the upper part of the door 3 and the displacement length of the lower part of the door 3 through the measuring unit 1, the difference between the upper and lower parts of the door 3 can be obtained, and then the magnitude of V degree can be calculated.
[0027] Please see Figure 1 and Figure 3 The measuring unit 1 includes a roller 11 located at the upper and lower parts of the door 3, abutting against the door 3, wherein the roller 11 has a diameter of 50mm; a housing 12 fixedly mounted on the carriage 2, wherein the roller 11 is rotatably mounted on the housing 12; a shaft 13 on the outside of the roller 11, wherein the shaft 13 is slidably mounted on the housing 12; a spring 14 disposed inside the housing 12, located between the roller 11 and the housing 12, wherein the spring 14 provides abutment force between the roller 11 and the door 3; and a sensor 15 disposed on the housing 12, wherein the sensor 15 converts the rotation circumference of the roller 11 into an electrical signal.
[0028] Roller 11 is located on the upper or lower part of door 3, responsible for contacting and measuring the displacement of the corresponding position on door 3. Housing 12 is fixedly mounted on the vehicle body 2 to provide a stable mounting position and positioning for roller 11. A shaft 13 allows roller 11 to rotate freely and slide along housing 12, ensuring flexibility and stability during measurement. Spring 14 is installed inside the housing, located between shaft 13 and housing 12, providing constant pressure to keep roller 11 pressed tightly against door 3, ensuring measurement accuracy and reliability. The pressure is set to 3N, neither too tight nor too loose. Sensor 15 is mounted on housing 12, converting the rotational circumference of roller 11 into an electrical signal, which is transmitted to the controller for processing. By calculating the difference between the upper and lower displacements of door 3, the V-degree (i.e., the tilt angle relative to the horizontal plane) of door 3 can be obtained.
[0029] Among the existing devices, the TOF laser ranging module is used for distance detection. However, the distance difference detected by V-degree is relatively small, generally between 1 mm and 1.5 mm. Therefore, a high-precision TOF laser ranging module is required, which costs more than 3,000 yuan per module. This high price makes it difficult to apply to large-scale online monitoring of car doors. In contrast, the roller in this device can achieve a measurement accuracy of 0.01 mm by converting the voltage value formed by the sensor, and the cost is also lower.
[0030] It also includes a base 4 for fixing the outer shell 12. The base 4 is fixedly installed on the carriage 2. The base 4 is a groove-shaped metal, and the outer shell 12 is snapped into the groove.
[0031] Please see Figure 4 The controller mainly consists of a DC-DC voltage conversion module, which is electrically connected to the sensor 15; a data processing control board, which is electrically connected to the DC-DC voltage conversion module; and a data display module, which is electrically connected to the data processing control board.
[0032] The DC-DC voltage conversion module converts the voltage value input by sensor 15 via electrical signals to suit the operating voltage range of the data processing control board. Upon receiving the converted electrical signal, the data processing control board processes and calculates the signal to determine if the difference between the upper and lower displacements of door 3 is between 1 mm and 1.5 mm. The data display module, based on the output of the data processing control board, displays displacement values exceeding this range in real time, allowing operators to intuitively monitor and observe abnormalities. Specifically, sensor 15 monitors the upper and lower displacements of door 3 and converts these physical changes into electrical signals. The DC-DC voltage conversion module converts these signals into a voltage suitable for the data processing control board's operating voltage. The data processing control board analyzes and processes the converted signals, calculates the displacement difference, and determines whether it exceeds the safe range. If it does, the data display module displays the result in real time, helping operators to promptly detect and handle abnormalities.
[0033] It also includes a power module, which is mounted on the carriage 2 or the door 3, and is electrically connected to the data processing control board. The power module also includes a battery, which is connected between the charging module and the DC-DC power conversion module.
[0034] It also includes a calibration fixture that provides a constant distance for the roller 11 ranging, wherein the calibration fixture is equipped with a 10*2*π*25mm roller 11 ranging fixture with a graduated scale. By operating the calibration fixture, it is easy for staff to verify whether the data on the data display module is accurate.
[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A vehicle-mounted subway door (3) V-degree monitoring device, characterized in that, Includes a measuring unit (1), which is installed on the carriage (2). There are at least two measuring units (1), which are located at the upper and lower parts of the door (3) along the height direction of the door, so as to measure the horizontal length values of the upper and lower parts of the door (3) during the opening of the door (3). The measuring unit (1) includes, Roller (11), the roller (11) is located at the upper and lower parts of the door (3), and the roller (11) abuts against the door (3); The outer casing (12) is fixedly installed on the carriage (2), and the rollers (11) are rotatably mounted on the outer casing (12); A shaft (13) is rotatably disposed on the outside of the shaft (13), and the shaft (13) is slidably disposed on the outer shell (12); A spring (14) is disposed inside a housing (12) and is located between a roller (11) and a housing (12) to provide a contact force between the roller (11) and the door (3); A sensor (15) is disposed on the housing (12), the sensor (15) converting the rotation circumference of the roller (11) into an electrical signal; It also includes a DC-DC voltage conversion module, which is electrically connected to the sensor (15); A data processing control board, which is electrically connected to a DC-DC voltage conversion module; The data display module is electrically connected to the data processing control board.
2. The vehicle-mounted subway door (3) V-degree monitoring device according to claim 1, characterized in that, It also includes a base (4) for fixing the outer shell (12), the base (4) being fixedly installed on the carriage (2), the base (4) being a groove-shaped metal, and the outer shell (12) being snapped into the groove.
3. The vehicle-mounted subway door (3) V-degree monitoring device according to claim 1, characterized in that, The roller (11) has a diameter of 50 mm.
4. The vehicle-mounted subway door (3) V-degree monitoring device according to claim 1, characterized in that, It also includes a power module, which is installed on the carriage (2) or the door (3). The power module is electrically connected to the sensor (15), the DC-DC voltage conversion module, the data processing control board and the data display module.
5. The vehicle-mounted subway door (3) V-degree monitoring device according to claim 4, characterized in that, The power module also includes a battery, which is connected between the charging module and the DC-DC power conversion module.
6. The vehicle-mounted subway door (3) V-degree monitoring device according to claim 1, characterized in that, It also includes a calibration fixture that provides a constant distance for the roller (11) ranging, wherein the calibration fixture is provided with a 10*2*π*25mm roller (11) ranging fixture with a scale.