JP-7854704-B2 - Information notification system

JP7854704B2JP 7854704 B2JP7854704 B2JP 7854704B2JP-7854704-B2

Inventors

江夏偉鵬
ブリセニョ穂世
岡本和久

Assignees

株式会社岩崎

Dates

Publication Date: 20260507
Application Date: 20220330

Claims (2)

Vehicles that travel on the tracks, A server connected to the aforementioned vehicle via an information and communication network and configured to send and receive information about the vehicle, An information notification system for notifying information from the server to the moving vehicle, comprising: The aforementioned vehicle is A position measuring unit for measuring the position of the aforementioned moving vehicle, A tilt detection unit for detecting the degree of tilt of the vehicle being driven, An information transmission unit transmits to the server the first position and a second position measured after the measurement of the first position as the measured position of the moving vehicle, and the first degree of tilt corresponding to the first position and the second degree of tilt corresponding to the second position as the detected degree of tilt of the moving vehicle. Equipped with, The aforementioned server, An information storage unit that stores the first position and the first degree of tilt in a storage device, A correlation generation unit generates a learning model obtained by machine learning based on the first position and the first degree of tilt, which is the correlation between the position of the vehicle and the degree of tilt of the vehicle. A tilt estimation unit that estimates the degree of tilt of a comparison vehicle by inputting the second position of the transmitted vehicle into the generated learning model, An information notification unit notifies the vehicle of information to prompt a warning based on a comparison between the second degree of tilt of the transmitted vehicle and the estimated degree of tilt of the comparison vehicle. Equipped with, If the information storage unit determines that the second degree of tilt is normal by the information notification unit, it updates the database of the storage device by adding the second position and the second degree of tilt as a new first position and a new first degree of tilt, The correlation generation unit generates a dataset from the updated database and updates the learning model by machine learning using the dataset as training data . The first degree of tilt and the second degree of tilt each have a roll angle, a pitch angle, and a yaw angle, respectively. The aforementioned information notification unit, An information notification system that, when any one of the following three conditions is met, indicates an abnormality and notifies the vehicle in motion of information to prompt a warning; 1. If the absolute value of the difference between the roll angle used for comparison and the roll angle actually detected is greater than or equal to a predetermined value, 2. If the absolute value of the difference between the pitch angle used for comparison and the pitch angle actually detected is greater than or equal to a predetermined value, 3. When the absolute value of the difference between the yaw angle used for comparison and the yaw angle actually detected is greater than or equal to a predetermined value.
The information notification system according to claim 1, wherein the degree of tilt of the comparison vehicle is within a safe range when there is no abnormality in the track.

Description

This invention relates to an information notification system, which is a system for notifying information to a vehicle traveling on a track such as a railway line. Conventionally, technologies for detecting abnormalities in railway vehicles, which are vehicles that run on tracks, are known. Generally, railway vehicles often have axle-beam type bogies, and technologies have been developed that target these bogies for abnormality detection. In one such technology, the device disclosed in Patent Document 1 calculates the rotation angle of the bogie's axle beam, and abnormalities are detected based on the calculated rotation angle. Japanese Patent Publication No. 2020-164021 (Claim 1, paragraph 0026, etc.) According to the device described in Patent Document 1, changes in the rotation angle due to events such as a decrease in the rigidity of the bogie's axle box support system or deterioration of the rubber between the bogie frame and the axle box can be acquired, enabling the detection of bogie abnormalities. However, since this type of vehicle typically has multiple axle beams, multiple rotation angle sensors are required for each axle beam in order to accurately determine abnormalities. Therefore, the configuration of the device for abnormality detection becomes complex. Furthermore, even if an abnormality in the bogie itself can be detected, it is difficult to detect abnormalities caused by factors other than the bogie, such as track deformation. Therefore, accurate abnormality detection is difficult with this device. For these reasons, there is a need for a technology that can accurately and easily determine abnormalities in vehicles running on tracks and notify the vehicle of information to warn it. Therefore, in view of the above requirements, the present invention aims to provide a system for notifying a vehicle traveling on a track of information that can accurately and easily detect anomalies and notify the vehicle of information to prompt a warning. This is an overall schematic diagram of an information notification system according to an embodiment of the present invention.Figure 1 is a side view of the vehicle in motion.Figure 1 is a front view of a moving vehicle, illustrating the state in which the vehicle tilts around an axis along its longitudinal direction.Figure 1 is a side view of a moving vehicle, illustrating the state in which the vehicle tilts around an axis along the width direction of the vehicle.Figure 1 is a plan view of a moving vehicle, illustrating the state in which the vehicle tilts around an axis along the height direction.Figure 1 is a functional block diagram of the vehicle in operation.This is a time chart illustrating the measurement and transmission timing of the first position, second position, first tilt degree, and second tilt degree for the vehicle shown in Figure 1.Figure 1 is a functional block diagram of the server.This figure shows an example of the manner of travel and position measurement when the vehicle shown in Figure 1 travels on a railway track.This figure shows an example of a database and dataset generated by the server shown in Figure 1.This figure illustrates the process of estimating the degree of slope for comparison based on the correlation, which is a learning model obtained from the server shown in Figure 1.Figure 1 is a flowchart showing the actual operation of the information notification system. The embodiments of the present invention will be described below with reference to the drawings. <Information Notification System> As shown in Figure 1, the information notification system 100 according to an embodiment of the present invention is a system for notifying a moving vehicle 10 of information to prompt a warning. The information notification system 100 comprises a moving vehicle 10 and a server 20. The moving vehicle 10, which travels on a track, is connected to the server 20 via an information communication network N. Information acquired by the moving vehicle 10 can be transmitted to the server 20 via wireless communication. Server 20 is a cloud server or similar system that receives and stores information transmitted from the vehicle 10. Server 20 is located in a different location from the vehicle 10. Furthermore, based on the stored information and the information transmitted from the vehicle 10, Server 20 notifies the vehicle 10 of information to prompt a warning. <Vehicles in operation> As shown in Figures 2 and 6, the running vehicle 10 comprises a body 11, a current collector 12, a running gear 13, a display device 14, a positioning device 15, a tilt detection device 16, a control device 17, and a communication device 18. In this embodiment, the running vehicle 10 travels on a track such as a railway track R and makes periodic stops at stations located on the railway track R. In this embodiment, the running vehicle 10 allows passengers to board and alight at the stations and is used to transport passengers. The running vehicle 10 may