Fall monitoring system and fall monitoring method

Abstract

According to the present invention, even if a passenger falls between the train and the platform, the onboard camera can accurately confirm the situation. [Solution] The fall monitoring system of the present invention comprises an on-board camera mounted on a railway vehicle, a video data analysis unit that detects when a passenger falls between the vehicle and the platform from the video captured by the on-board camera, and a control unit that controls the on-board camera so that it can capture the fall situation when a fall is detected. One pair of on-board cameras can be mounted on each vehicle, facing each other in the direction of travel and the opposite direction of travel. Furthermore, when a fall is detected, the on-board camera may be controlled to point downwards so that it can capture the fall situation, and may also be zoomed. In addition, the fall situation captured by the on-board camera is displayed on a monitor.

Description

Technical Field

[0001] The present invention relates to a fall monitoring system and a fall monitoring method.

Background Art

[0002] In recent years, the use of boarding and alighting monitoring systems that monitor whether dangerous events occur during boarding and alighting using the images of on-vehicle cameras installed on the sides of railway vehicles has been increasing.

[0003] FIG. 1 is a schematic diagram showing an example of the arrangement of an on-vehicle camera on a railway vehicle in a conventional boarding and alighting monitoring system. FIG. 1(a) is a view of vehicle 1 equipped with on-vehicle camera 2 from above, and FIG. 1(b) is a view of one vehicle 1 from the side. In order to monitor the vicinity of vehicle door 3 during boarding and alighting, a pair of on-vehicle cameras 2 are provided on both sides of vehicle 1 facing each other in the vehicle traveling direction and the opposite direction of the traveling direction. The images captured by on-vehicle camera 2 are displayed on, for example, a monitor installed in the driver's cab to monitor the situation of passengers near vehicle door 3, and are used to ensure safety and improve services for passengers.

[0004] For example, Patent Document 1 discloses a technique for supporting passengers who require assistance, such as wheelchair passengers and passengers with white canes, using such a boarding and alighting monitoring system. In Patent Document 1, the recognition of passengers who require assistance is performed by analyzing the images captured by the on-vehicle camera with an information processing device, enabling accurate recognition of passengers who require assistance.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In conventional passenger boarding and alighting monitoring systems, the on-board camera 2 is installed at an angle that allows it to photograph all of the multiple vehicle doors 3 located on the vehicle 1 in order to check the status of passengers boarding and alighting. Figure 2 is a schematic diagram showing an example of the installation of an on-board camera in a passenger boarding and alighting monitoring system. Area 4 is a schematic shooting range depending on the position and orientation of the on-board camera 2. Although it can monitor the normal boarding and alighting situation of passengers, if a passenger falls between the vehicle 1 and the platform, it falls outside the shooting range, so the on-board camera 2 could not be used to check the situation of a passenger falling.

[0007] Regarding passengers falling onto the tracks, conventional technologies include installing fall detection mats beneath the platform to detect the pressure of falling objects, and installing two levels of line sensors beneath the platform facing the direction of the train to detect falls when objects cross them. However, none of these technologies can confirm the circumstances of a fall; they only detect falls, and they also have problems with installation costs and false positives.

[0008] Therefore, the present invention aims to provide a fall monitoring technology that uses an in-vehicle camera to accurately confirm the situation when a passenger falls between the vehicle and the platform. [Means for solving the problem]

[0009] To solve the above problems, one representative fall monitoring system of the present invention comprises an on-board camera mounted on a railway vehicle, a video data analysis unit that detects when a passenger falls between the vehicle and the platform from the video captured by the on-board camera, and a control unit that controls the on-board camera to capture the fall situation when a fall is detected. [Effects of the Invention]

[0010] According to the present invention, even if a passenger falls between the train and the platform, the onboard camera can accurately confirm the situation. Issues, structures, and effects other than those mentioned above will be clarified by the following explanation of the implementation methods. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a schematic diagram showing an example of the arrangement of on-board cameras on a railway vehicle in a conventional passenger boarding / alighting monitoring system. [Figure 2] Figure 2 is a schematic diagram showing an example of the installation of an in-vehicle camera in a passenger boarding and alighting monitoring system. [Figure 3] Figure 3 shows an example configuration of a fall monitoring system according to one embodiment of the present invention. [Figure 4] Figure 4 is a schematic diagram illustrating an example of how an in-vehicle camera is mounted on a vehicle. [Figure 5] Figure 5 shows an example of the control flow in the fall monitoring system of the first embodiment. [Figure 6] Figure 6 shows an example of the control flow in the fall monitoring system of the second embodiment. [Figure 7] Figure 7 is a schematic diagram showing the situation where the entire body of the fallen passenger 22 has fallen below the platform 21. [Figure 8] Figure 8 shows an example of the control flow in the fall monitoring system of the third embodiment. [Figure 9] Figure 9 shows an example of the control flow in the fall monitoring system of the fourth embodiment. [Modes for carrying out the invention]

[0012] Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited by this embodiment. In addition, the same parts are denoted by the same reference numerals in the drawings.

[0013] (Fall and circumstances of the fall) In this disclosure, "falling" means an event in which at least a part of a passenger's body falls between the train and the platform. The fall situation refers to the situation of passengers getting on and off the train during a fall. For example, it includes situations where one foot has fallen under the platform and the passenger is crouching, the lower body from the abdomen is sandwiched between the vehicle and the platform, the part from the neck has fallen under the platform, and the whole body is under the platform.

[0014] [System Configuration] FIG. 3 is a diagram showing a configuration example of a fall monitoring system according to an embodiment of the present invention. The railway vehicle is composed of a leading vehicle 10a, one or more intermediate vehicles 10b, and a trailing vehicle 10c. The fall monitoring system in this embodiment includes an in-vehicle camera 11, a hub 12, a monitor 13, a video data storage unit 14, a video data analysis unit 15, a control unit 16, and a communication unit 17. Each functional unit constituting the fall monitoring system is connected via the hub 12 to form a network. On the ground side, devices such as a fall detection mat 18, an under-platform camera 19, and an under-platform lighting 20 are provided.

[0015] (In-vehicle Camera) In each vehicle, an in-vehicle camera 11 installed on the front side in the traveling direction (which shoots the rear with respect to the traveling direction. Hereinafter referred to as the "in-vehicle camera 11 on the front side in the traveling direction") and an in-vehicle camera 11 installed on the rear side in the traveling direction (which shoots the front with respect to the traveling direction. Hereinafter referred to as the "in-vehicle camera 11 on the rear side in the traveling direction") are provided in a pair facing each other (see FIG. 1). Note that the in-vehicle cameras 11 may be provided in a pair for each vehicle door rather than for each vehicle. It is also possible to install only one of the in-vehicle cameras. Both the in-vehicle camera 11 on the front side in the traveling direction and the in-vehicle camera 11 on the rear side in the traveling direction continuously shoot during operation, and the videos shot by both in-vehicle cameras 11 are stored (recorded) in the video data storage unit 14 described later.

[0016] FIG. 4 is a schematic diagram showing an example of the attachment of the in-vehicle camera 11 to the vehicle 10a. FIG. 4(a) is a view of the in-vehicle camera 11 seen from the side, and (b) is a view of the in-vehicle camera seen from the front. The onboard camera 11 is rotatable around an axis located on the side of the vehicle body and can be installed in any rotational position. Normally, it is installed in a rotational position appropriate for checking the boarding and alighting status of passengers at all doors of the vehicle.

[0017] (Hub) Hub 12 constitutes the entire vehicle network. The hubs 12 of each vehicle 10a, 10b, and 10c are connected to the hubs 12 of adjacent vehicles by network cables. The network cables are connected to junction boxes (not shown) via the underfloor of the vehicles, and the junction boxes of adjacent vehicles are connected by jumper wires.

[0018] (Monitor) Monitor 13 is a display device that displays images captured by the onboard camera 11 and visually informs the driver of the fall situation as detected by the fall monitoring system. In Figure 2, Monitor 13 is installed in the driver's cab of the leading car 10a and the last car 10c. In addition to the driver's cab, Monitor 13 may also be installed in station premises or the central operation control room.

[0019] Preferably, the monitor 13 has a divided display screen, and the images captured by each in-vehicle camera 11 are assigned to and displayed on their respective display screens. The display screen of the monitor 13 may always be divided according to each in-vehicle camera 11, or the division may be changed in response to the detection of a fall, with part or all of it being assigned to display the fall situation. Furthermore, it is possible to display a list of fall situations and their detection locations on a single screen without splitting the display screen of monitor 13. If information about the location where a fall is detected is not needed, this information can be omitted, and only the fall situation can be displayed.

[0020] There are no particular restrictions on how the footage of a fall is displayed. Passengers who have fallen can be highlighted by surrounding them with a red frame, a warning can be added with text, or an overlay can be used as appropriate. However, it is desirable to consider that if the display becomes too complex, it will burden the driver and delay them in taking the necessary action.

[0021] (Video data storage section) The video data storage unit 14 stores (records) the video captured by the in-vehicle camera 11 as video data.

[0022] (Video Data Analysis Department) The video data analysis unit 15 has the function of detecting a fall from the video footage captured by the in-vehicle camera 11. The method used to detect falls in the video data analysis unit 15 is not particularly limited. For example, it is possible to recognize passengers using an AI-based analysis algorithm and detect that their direction of movement is vertical by using motion vectors, or to detect falls by using skeletal detection of passengers so that part of their body is not visible on the platform. Furthermore, the video data analysis unit 15 can also detect events that may be precursors or causes of a fall from the video footage captured by the in-vehicle camera 11. For example, these events include rushing in just before the vehicle doors close, approaching the vehicle after the vehicle doors have closed, and getting caught in the vehicle doors.

[0023] (Control Unit) The control unit 16 has the function of controlling the operation of the entire fall monitoring system. Based on operational information such as vehicle door opening and closing information and vehicle door boarding / alighting information (whether or not it is the vehicle door on the side that will be used as a boarding / alighting area at the next station) from a higher-level operation control device (not shown) that manages the overall operation of railway vehicles, such as a TMS (TRAIN MANAGEMENT SYSTEM), the control unit 16 controls each component of the fall monitoring system to perform the necessary processing in a timely manner (for example, by activating the onboard camera on the side of the vehicle door that opens and closes at a designated station).

[0024] Furthermore, the control unit 16 also has the function of exchanging information with ground-side devices such as the fall detection mat 18, the under-platform camera 19, and the under-platform lighting 20, which will be described later, via the communication unit 17. Furthermore, the control unit 16 also has functions for controlling the in-vehicle camera 11, such as functions for controlling parameters related to the images captured by the in-vehicle camera 11 (e.g., zoom in / out, resolution, frame rate, aperture, etc.) and functions for controlling the operation (orientation, etc.) of the in-vehicle camera 11.

[0025] (Ground-side equipment) In this embodiment, the ground-side equipment that works in conjunction with the fall monitoring system includes a fall detection mat 18, a platform-side camera 19, and platform-side lighting 20. The fall detection mat 18 is a mat-shaped pressure sensor laid beside the tracks beneath the platform. It has the function of detecting when an object falls onto the mat, as well as mitigating the impact if a passenger accidentally falls from the platform. Since laying it along the entire length of the platform would be costly, it is also possible to consider laying it only in areas where the platform curves (areas where the distance between the train and the platform is large and falls are likely to occur).

[0026] The platform-under-platform camera 19 is a camera installed from under the platform, facing towards the tracks, and is used to photograph the conditions beside and on the tracks below the platform. The platform-under-platform camera 19 may be configured as a rotating camera, with one camera corresponding to each train car, or as a fixed camera, with multiple cameras corresponding to each train car.

[0027] The platform under-lighting 20 is installed under the platform along its entire length, illuminating the area beside and on the tracks beneath the platform. It is also used during track maintenance work.

[0028] In this embodiment, the hardware configuration involves the video data analysis unit 15 and the control unit 16, where each function is executed by program processing performed by a computer processor such as a CPU. These functional units also include random access semiconductor memory, memory devices, or storage media (either volatile or non-volatile) for storing programs (algorithms) and data. When realizing different functions through program processing by the processor and memory, they may be arranged as separate hardware components, or a single piece of hardware may be shared by switching or selecting functions using software.

[0029] [Control Flow] Next, the control flow of the in-vehicle camera 11 by the control unit 16 will be described. (First Embodiment) Figure 5 shows an example of the control flow in the fall monitoring system of the first embodiment. When a train arrives at a station, the fall prevention system is activated. The video captured by the onboard camera 11 on the front side in the direction of travel, near the passenger entrance, is displayed on the monitor 13 in the driver's cab (step S11), supporting the driver in confirming the boarding and alighting status of passengers. In this embodiment, the onboard camera 11 on the front side in the direction of travel is kept continuously recording while the railway vehicle is in operation, and the video is displayed on the monitor 13 when the vehicle arrives at a station. However, recording may be started in conjunction with the activation of the fall monitoring system, and the video may be displayed on the monitor 13 at the same time.

[0030] The video captured by the in-vehicle camera 11 is sent to the video data analysis unit 15 in real time for analysis. When a fall is detected (step S12), the control unit 16 controls the in-vehicle camera 11 to point downwards so that it can capture the fall situation (step S13). As a result, the fall situation captured by the downward-facing onboard camera 11 is transmitted in real time and displayed as live video on the monitor 13 in the driver's cab (step S14).

[0031] In this embodiment, the video displayed on the monitor 13 is captured by the onboard camera 11, which is controlled to face downwards, so that the situation of the fall can be conveyed to the driver more accurately. This prevents the driver from overlooking a person who has fallen and departing the train, and also allows them to request necessary rescue from station staff depending on the situation of the fall.

[0032] (Second Embodiment) Figure 6 shows an example of the control flow in the fall monitoring system of the second embodiment. The steps from the start of the control flow to step S22 in this embodiment are the same as from the start of the control flow to step 12 in the first embodiment, so the explanation will be omitted.

[0033] The video captured by the front-facing onboard camera 11 in the direction of travel is sent to the video data analysis unit 15 for analysis. When a fall is detected (step S22), the control unit 16 displays the video captured by the rear-facing onboard camera 11 in the direction of travel on the monitor 13 (step S23), and both onboard cameras 11 are controlled to point downwards so that they can capture the fall situation (step S24). As a result, the fall situation captured by both onboard cameras 11 is transmitted in real time and displayed as split live video on the monitor 13 in the driver's cab (step S25).

[0034] In this embodiment, since both onboard cameras 11 can capture the fall situation from two opposing directions, the driver can be accurately informed of the fall situation, even if it is difficult to see from one direction due to other passengers getting on or off the train. Furthermore, in step S24, instead of both onboard cameras 11 being controlled to point downwards, only one of the onboard cameras 11 may be controlled to point downwards. In this case, the onboard camera 11 that is not controlled to point downwards can be used to check the situation of passengers getting on and off the train around the area where the fall occurred.

[0035] (Third embodiment) Figure 7 is a schematic diagram showing the situation where the entire body of the fallen passenger 22 has fallen below the platform 21. If the distance between the train and the platform is large, a fall may occur in which part of the body gets trapped between the train and the platform, causing the entire body to fall below the platform without stopping. In the control flows of the first and second embodiments, it is difficult to accurately capture such a fall using the onboard camera 11, and the third embodiment addresses this type of fall. Figure 8 shows an example of the control flow in the fall monitoring system of the third embodiment. The steps from the start of the control flow to step S32 in this embodiment are the same as from the start of the control flow to step 12 in the first embodiment, so the explanation will be omitted.

[0036] The video captured by the onboard camera 11 on the front side in the direction of travel is sent to the video data analysis unit 15 for analysis. When a fall is detected (step S32), the control unit 16 controls the onboard camera 11 on the front side in the direction of travel to point downward so that the fall situation can be captured (step S33), turns on the platform under lighting 20 (step S35), and simultaneously starts recording with the platform under camera 19 (step S36). As a result, in addition to the video captured by the onboard camera 11, the video captured by the platform-side camera 19 is also transmitted in real time and displayed separately as live video on the monitor 13 in the driver's cab (step S34).

[0037] In this embodiment, by coordinating with the platform-under-the-platform camera 19, the system can accurately communicate to the train driver even the fall situation shown in Figure 7.

[0038] (Fourth Embodiment) Figure 9 shows an example of the control flow in the fall monitoring system of the fourth embodiment. The steps from the start of the control flow to step S42 in this embodiment are the same as from the start of the control flow to step 12 in the first embodiment, so the explanation will be omitted.

[0039] The video captured by the on-board camera 11 on the front side in the direction of travel is sent to the video data analysis unit 15 for analysis. When a fall is detected (step S42), the control unit 16 controls the on-board camera 11 on the front side in the direction of travel to point downward so that the fall situation can be captured (step S43). In this embodiment, at this time, a playback video is created by extracting video footage from the video data stored in the video data storage unit for a predetermined time before and after the fall detection (step S45). As a result, the generated playback video is displayed on the monitor 13 in the driver's cab, split across the screen, along with the live video captured by the onboard camera 11 (step S44).

[0040] In this embodiment, by displaying the playback video on the monitor, it is possible to convey not only the circumstances of the fall but also the process leading up to it to the driver.

[0041] [Example of changes] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention. The embodiments described above may be combined. For example, the step of extracting and playing back video footage before and after the fall in the fourth embodiment can be applied to other embodiments as well.

[0042] (Zoom control) In the embodiment described above, the on-board camera 11 was controlled to point downwards in order to accurately photograph the fall situation, but zoom control may also be used in combination with this. Specifically, by further zooming in on the on-board camera 11, which is controlled to point downwards, either automatically or by the driver, it becomes possible to grasp the fall situation in more detail. Both optical zoom and digital zoom can be used for zoom control. Here, in addition to the method of controlling downwards, there is also a control method that magnifies the downward portion using digital zoom, etc. Specifically, the onboard camera 11 may capture a wider field of view in advance, and then crop the necessary position as needed and display it on the monitor 13. This cropping of the image has the effect of eliminating the need for physical mechanical control.

[0043] (Fall detection means) In the embodiment described above, video analysis by the video data analysis unit 15 was used to detect falls, but other means may be used to assist or replace fall detection. For example, ground-side detection means such as existing platform cameras (not shown), the fall detection mat 18 described above, or upper and lower two-tiered line sensors (not shown) installed below the platform can be used as auxiliary or alternative means to the video data analysis unit 15. This prevents overlooking falls even if the video data analysis unit 15 fails to detect a fall or if the video data analysis unit 15 is unusable due to malfunction or other reasons. Furthermore, the video data analysis unit 15 can be used not only to detect falls, but also to detect events that may foreshadow or cause falls. This allows for the detection of events such as passengers rushing in just before the doors close, approaching the vehicle after the doors have closed, or passengers getting caught in the doors, in order to ensure the safety of passengers by informing the driver of these events before a fall is detected.

[0044] (Notification method) In the above-described embodiment, the detection of a fall and the circumstances of the fall were communicated to the train driver, but in addition to this, it is also possible to communicate this information to station staff, the central control room, etc. Furthermore, in order to detect a fall and inform the driver of the circumstances of the fall, in addition to the display on monitor 13, sound means such as a buzzer or voice means may be used in combination.

[0045] The following describes, but is not limited to, embodiments that may constitute the present invention. (Aspect 1) A fall monitoring system that monitors the situation when a passenger falls between a train and the platform, The onboard camera mounted on the aforementioned railway vehicle, A video data analysis unit that detects the fall from the video captured by the in-vehicle camera, A fall monitoring system comprising a control unit that controls the in-vehicle camera to capture images of the fall when the fall is detected. (Aspect 2) In the fall monitoring system described in Embodiment 1, The aforementioned controlled in-vehicle camera is part of a fall monitoring system whose orientation is controlled. (Aspect 3) In the fall monitoring system described in Embodiment 2, The in-vehicle camera whose orientation is controlled is controlled to face downwards in a fall monitoring system. (Aspect 4) In the fall monitoring system described in Embodiment 3, The aforementioned in-vehicle camera, which is controlled to point downwards, is further zoom-controlled, forming a fall monitoring system. (Appendix 5) In the fall monitoring system described in Embodiment 1, The aforementioned in-vehicle cameras are mounted in pairs on each vehicle, facing in the direction of travel and the opposite direction of travel. A fall monitoring system in which, when the aforementioned fall is detected, at least one of the pair of in-vehicle cameras is controlled to be oriented so as to capture the fall situation. (Aspect 6) In the fall monitoring system described in Embodiment 5, The in-vehicle camera whose orientation is controlled is controlled to face downwards in a fall monitoring system. (Aspect 7) In the fall monitoring system described in Embodiment 6, The aforementioned in-vehicle camera, which is controlled to point downwards, is further zoom-controlled, forming a fall monitoring system. (Pattern 8) In the fall monitoring system described in any one of embodiments 1 to 7, A fall monitoring system further includes a monitor that displays the video footage captured by the aforementioned in-vehicle camera. (Aspect 9) In the fall monitoring system described in Embodiment 8, When a fall is detected, the system turns on the lights installed below the platform and starts recording with a camera installed below the platform, and the video captured by the camera installed below the platform is displayed on the monitor, thus providing a fall monitoring system. (Aspect 10) In the fall monitoring system described in embodiment 8 or 9, The vehicle further includes a video data storage unit for storing video footage captured by the aforementioned in-vehicle camera. A fall monitoring system in which, upon detection of a fall, the control unit extracts video data from the video data storage unit showing the period before and after the fall to create a playback video, and the playback video is displayed on the monitor. (Aspect 11) A fall monitoring method for monitoring the situation when a passenger falls between a train and the platform, Images of the passengers getting on and off are acquired by an onboard camera mounted on the aforementioned railway vehicle. The video data analysis unit detects the fall from the video captured by the in-vehicle camera. A fall monitoring method in which, when the aforementioned fall is detected, the control unit controls the in-vehicle camera to capture the fall situation. [Explanation of Symbols]

[0046] 1: Vehicle, 2: Onboard camera, 3: Vehicle door, 10a: Leading car, 10b: Middle car, 10c: Last car, 11: Onboard camera, 12: Hub, 13: Monitor, 14: Video data storage unit, 15: Video data analysis unit, 16: Control unit, 17: Communication unit, 18: Fall detection mat, 19: Under-platform camera, 20: Under-platform lighting, 21: Platform, 22: Passenger who fell

Claims

1. A fall monitoring system that monitors the situation when a passenger falls between a train and the platform, The onboard camera mounted on the aforementioned railway vehicle, A video data analysis unit that detects the fall from the video captured by the in-vehicle camera, A fall monitoring system comprising a control unit that controls the in-vehicle camera to capture images of the fall when the fall is detected.

2. In the fall monitoring system described in claim 1, The aforementioned controlled in-vehicle camera is part of a fall monitoring system whose orientation is controlled.

3. In the fall monitoring system described in claim 2, The in-vehicle camera whose orientation is controlled is controlled to face downwards in a fall monitoring system.

4. In the fall monitoring system described in claim 3, The aforementioned in-vehicle camera, which is controlled to point downwards, is further zoom-controlled, forming a fall monitoring system.

5. In the fall monitoring system described in claim 1, The aforementioned in-vehicle cameras are mounted in pairs on each vehicle, facing in the direction of travel and the opposite direction of travel. A fall monitoring system in which, when a fall is detected, the control unit controls the orientation of at least one of the pair of in-vehicle cameras so that it can capture the fall situation.

6. In the fall monitoring system described in claim 5, The in-vehicle camera whose orientation is controlled is controlled to face downwards in a fall monitoring system.

7. In the fall monitoring system described in claim 6, The aforementioned in-vehicle camera, which is controlled to point downwards, is further zoom-controlled, forming a fall monitoring system.

8. In the fall monitoring system according to any one of claims 1 to 7, A fall monitoring system further includes a monitor that displays the video footage captured by the aforementioned in-vehicle camera.

9. In the fall monitoring system according to claim 8, When a fall is detected, the control unit turns on the lights installed below the platform and starts recording with a camera installed below the platform, and the video captured by the camera installed below the platform is displayed on the monitor, in a fall monitoring system.

10. In the fall monitoring system according to claim 8, The vehicle further includes a video data storage unit for storing video footage captured by the aforementioned in-vehicle camera. A fall monitoring system in which, upon detection of a fall, the control unit extracts video data from the video data storage unit showing the period before and after the fall to create a playback video, and the playback video is displayed on the monitor.

11. A fall monitoring method for monitoring the situation when a passenger falls between a train and the platform, The onboard camera installed in the aforementioned railway vehicle captures images of the passengers getting on and off the train. The video data analysis unit detects the fall from the video captured by the in-vehicle camera. A fall monitoring method in which, when the aforementioned fall is detected, the control unit controls the in-vehicle camera to capture the fall situation.

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