Safety device for personal mobility device

Abstract

The present invention relates to a safety device for a personal mobility device, the safety device which is mounted on the personal mobility device to generate different virtual sounds for each driving speed and which, when a collision occurs, notifies an emergency operation center server of a collision situation so as to recognize the on-site situation. The safety device comprises: an acceleration detection unit (100) configured to detect acceleration of the personal mobility device; an ultrasonic detection unit (110) configured to detect, by using ultrasonic waves, a distance from an obstacle in front of the personal mobility device; an angular velocity detection unit (120) configured to detect the angular velocity of the personal mobility device; a sound output unit (300) configured to output sound; and a control unit (200) configured to receive acceleration detection data from the acceleration sensing unit and calculate a driving speed of the personal mobility device, receive distance detection data from the ultrasonic detection unit and calculate a distance from the front obstacle, output different virtual sounds for each driving speed by providing, to the sound output unit, a sound reproduction signal corresponding to the driving speed, generate an alarm by providing an alarm reproduction signal to the sound output unit when the distance from the front obstacle becomes less than or equal to a set distance, determine whether the personal mobility device collides, on the basis of the acceleration detection data and angular velocity detection data, and when a collision occurs, notify the emergency operation center server (400) of the collision situation through a user terminal (M).

Description

Safety device for personal mobility devices

[0001] The present invention relates to a safety device for a personal mobility device, and more specifically, to a safety device for a personal mobility device such as an electric scooter or an electric two-wheeled vehicle that is equipped with a virtual sound different according to the driving speed to make pedestrians aware of the driving speed of the electric scooter, and also generates an alarm signal (horn sound, safety warning sound, etc.) when it is close to a pedestrian to prevent safety accidents caused by contact, and notifies an emergency control room server of the dispatch situation in the event of a collision to take action.

[0002]

[0003] Electric scooters, which are personal mobility devices, can be easily ridden at speeds of around 25 km / h (low-speed safety). They are eco-friendly mobility devices that consume little energy because they use low-output electric motors and small batteries. Like bicycles, they offer a high return on investment compared to facility costs, so they do not place a significant burden on road traffic. As the number of electric scooter users increases, related accidents have also increased rapidly. Furthermore, electric scooters have become a threat to pedestrians.

[0004] However, since electric scooters use electricity as their power source, they are characterized by producing almost no noise, which can lead to serious accidents if the user is unable to perceive the speed and collides with people or obstacles.

[0005] [Prior Art Literature]

[0006] [Patent Literature]

[0007] (Patent Document 1) Korean Published Patent Application No. 10-2022-0090864 (Title of Invention: Surrounding Object Detection and Alarm Actuator Using Radar Sensor Dedicated to Personal Mobility Devices)

[0008]

[0009] Accordingly, the present invention has been made to solve the above-mentioned problems, and the objective of the present invention is to provide a safety device for a personal mobility device that prevents safety accidents caused by contact between the user of the personal mobility device and obstacles (pedestrians, vehicles, building walls, etc.) and can notify an emergency control room server of the occurrence of a collision to take action.

[0010]

[0011] To achieve the above objective, a safety device for a personal mobility device according to an embodiment of the present invention is a safety device for a personal mobility device that is mounted on the personal mobility device, generates different virtual sounds according to the driving speed, and notifies an emergency control room server of the collision situation in the event of a collision to recognize the situation at the scene, and comprises: an acceleration detection unit configured to detect the acceleration of the personal mobility device; an ultrasonic detection unit configured to detect the distance to an obstacle in front of the personal mobility device using ultrasound; an angular velocity detection unit configured to detect the angular velocity of the personal mobility device; and an acoustic output unit configured to output sound. The control unit is configured to receive acceleration detection data from the acceleration detection unit to calculate the driving speed of the personal mobility device, receive distance detection data from the ultrasonic detection unit to calculate the distance to a front obstacle, provide a sound playback signal corresponding to the driving speed to the sound output unit to output a different virtual sound for each driving speed, provide an alarm playback signal to the sound output unit to generate an alarm when the distance to the front obstacle becomes less than or equal to a set distance, determine whether the personal mobility device will collide based on the acceleration detection data and angular velocity detection data, and notify the emergency situation room server of the collision situation through a user terminal when a collision occurs; characterized by including

[0012] In the safety device of a personal mobility device according to the above embodiment, the control unit can input the acceleration detection data and angular velocity detection data into a deep learning model learned from a dataset of acceleration data, angular velocity data and collision detection data to obtain collision detection data and determine whether a collision occurs.

[0013] In the safety device of the personal mobility device according to the above embodiment, the virtual sound that differs according to the driving speed may be a sound having a higher volume as the driving speed increases.

[0014] In the safety device of the personal mobility device according to the above embodiment, the virtual sound that differs according to the driving speed may be a sound having a higher frequency as the driving speed increases.

[0015]

[0016] According to the safety device of a personal mobility device according to an embodiment of the present invention, acceleration detection data is received from an acceleration detection unit to calculate the driving speed of the personal mobility device, and distance detection data is received from an ultrasonic detection unit to calculate the distance to a front obstacle. A sound playback signal corresponding to the driving speed is provided to a sound output unit to output a virtual sound different from the driving speed. When the distance to the front obstacle becomes less than or equal to a set distance, an alarm playback signal is provided to the sound output unit to generate an alarm. Based on the acceleration detection data and the angular velocity detection data received from the angular velocity detection unit, the collision of the personal mobility device is determined, and when a collision occurs, the collision situation is reported to an emergency control room server through a user terminal. This provides an excellent effect of preventing safety accidents caused by contact between the user of the personal mobility device and an obstacle (pedestrian, vehicle, building wall, etc.) and allowing the emergency control room server to be notified of the collision when it occurs to take action.

[0017]

[0018] FIG. 1 is a block diagram of a safety device for a personal mobility device according to an embodiment of the present invention.

[0019] Figure 2 is a drawing showing the safety device of the personal mobility device of Figure 1 mounted on the personal mobility device.

[0020] Figure 3 is a diagram showing a volume table by driving speed, which is configured to have a higher volume as the driving speed increases in order to determine different virtual sounds by driving speed in the control unit of Figure 1.

[0021] Figure 4 is an example diagram showing that an alarm is generated when the distance to a front obstacle in the sound output unit of Figure 1 becomes less than or equal to a set distance.

[0022] FIG. 5 is a flowchart for explaining the operation of a safety device of a personal mobility device according to an embodiment of the present invention.

[0023]

[0024] In describing the embodiments of the present invention, if it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the essence of the present invention, such detailed description will be omitted. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intentions or practices of the user or operator. Therefore, such definitions should be based on the content throughout this specification. Terms used in the detailed description are intended merely to describe the embodiments of the present invention and should not be interpreted restrictively. Unless explicitly stated otherwise, expressions in the singular form include the meaning of the plural form. In this description, expressions such as "include" or "comprise" are intended to refer to certain characteristics, numbers, steps, actions, elements, parts thereof, or combinations thereof, and should not be interpreted as excluding the existence or possibility of one or more other characteristics, numbers, steps, actions, elements, parts thereof, or combinations thereof other than those described.

[0025] In each system illustrated in the drawings, elements in some cases may have the same or different reference numbers, suggesting that the represented elements may be different or similar. However, elements may have different implementations and may operate with some or all of the systems shown or described herein. The various elements illustrated in the drawings may be the same or different. It is optional which is referred to as the first element and which is referred to as the second element.

[0026] In this specification, the phrase “transmits,” “delives,” or “provides” data or signals from one component to another component includes not only the direct transmission of data or signals from one component to another component, but also the transmission of data or signals to another component through at least one other component.

[0027]

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0029] FIG. 1 is a block diagram of a safety device for a personal mobility device according to an embodiment of the present invention, FIG. 2 is a diagram showing the safety device of the personal mobility device of FIG. 1 mounted on the personal mobility device, FIG. 3 is a diagram showing a volume table for each driving speed in which the volume increases as the driving speed increases in order to determine different virtual sounds for each driving speed in the control unit of FIG. 1, FIG. 4 is an example diagram showing that an alarm is generated when the distance to a front obstacle in the sound output unit of FIG. 1 becomes less than or equal to a set distance.

[0030]

[0031] The safety device of a personal mobility device according to an embodiment of the present invention is exemplified as being mounted on the center of the handle of a personal mobility device (electric kickboard, electric two-wheeled vehicle, etc.) as shown in FIGS. 1 to 4, but the location is not particularly limited as long as it is on the body of the personal mobility device. The safety device of a personal mobility device according to an embodiment of the present invention includes an acceleration sensing unit (100), an ultrasonic sensing unit (110), an angular velocity sensing unit (120), an acoustic output unit (300), and a control unit (200).

[0032]

[0033] The acceleration detection unit (100) detects the acceleration of the personal mobility device and inputs the acceleration detection data to the control unit (200).

[0034]

[0035] The ultrasonic detection unit (110) uses ultrasound to detect the distance to an obstacle in front of the personal mobility device. That is, the ultrasonic detection unit (110) can calculate the distance to the obstacle through the speed of the sound wave (340 m / s) and the return time (see Equation 1).

[0036]

[0037] [Mathematical Formula 1]

[0038]

[0039] [τ: Time taken from the start of sound wave transmission to the completion of sound wave reception (s), υ: Speed ​​of sound (m / s), R: Distance from ultrasonic sensor to obstacle (m)]

[0040]

[0041] The angular velocity detection unit (120) is a gyroscope sensor that detects the angular velocity of the personal mobility device and inputs an angular velocity detection signal to the control unit (200).

[0042]

[0043] The sound output unit (300) receives sound playback signals and alarm playback signals from the control unit (200) and outputs virtual sounds and alarms that differ according to driving speed. Virtual sounds that differ according to driving speed can be implemented in two types. First, virtual sounds that have a higher volume as driving speed increases (see FIG. 3). Second, virtual sounds that have a higher frequency as driving speed increases.

[0044]

[0045] The control unit (200) is a microcomputer that controls all components, receives acceleration detection data from the acceleration detection unit (100), integrates it to calculate the driving speed of the personal mobility device, receives distance detection data from the ultrasonic detection unit (110) to calculate the distance to the obstacle in front, provides a sound playback signal corresponding to the calculated driving speed to the sound output unit (300) to output a different virtual sound (a virtual sound with a different volume or a virtual sound with a different frequency) depending on the driving speed, and when the distance to the obstacle in front becomes less than or equal to a set distance (e.g., 5m in FIG. 4), provides an alarm playback signal to the sound output unit (300) to generate an alarm, determines whether the personal mobility device will collide based on the acceleration detection data input from the acceleration detection unit (100) and the angular velocity detection data input from the angular velocity detection unit (120), and when a collision occurs, notifies the emergency situation room server (400) of the collision situation through the user terminal (M).

[0046] The control unit (200) can input acceleration detection data and angular velocity detection data into a deep learning model (learned from a dataset of acceleration data, angular velocity data and collision data) to obtain collision data and determine whether a collision has occurred.

[0047] When the emergency situation room server (400) receives notification of a collision situation from the control unit (200), it also receives collision location data from the user terminal (M), deploys a drone (D) to the collision site location to photograph the site and acquire a site image, and can provide command data to the ambulance terminal to recognize the site situation by analyzing the site image with AI and taking appropriate measures for the recognized site situation. The process of recognizing the site situation by analyzing the acquired site image with AI can be achieved by inputting the acquired site image data into a deep learning model trained on a dataset of image data and site situation data to acquire the site situation data and recognize it through this.

[0048]

[0049] Hereinafter, the operation of the safety device of a personal mobility device according to an embodiment of the present invention, which is composed of the components as described above, will be explained.

[0050]

[0051] FIG. 5 is a flowchart for explaining the operation of a safety device of a personal mobility device according to an embodiment of the present invention.

[0052]

[0053] First, the control unit (200) receives acceleration detection data from the acceleration detection unit (100) (S100), receives distance detection data from the ultrasonic detection unit (110) (S110), and receives angular velocity detection data from the angular velocity detection unit (120) (S120).

[0054]

[0055] Next, the control unit (200) obtains collision data of the personal mobility device based on acceleration data and angular velocity data (S130), and determines whether there is a collision (S140).

[0056]

[0057] If no collision occurs in the above step (S140) (N), the control unit (200) integrates the acceleration detection data input in step (S100) to calculate (convert) the driving speed of the personal mobility device (S150).

[0058]

[0059] Next, the control unit (200) obtains sound volume data corresponding to the driving speed calculated using the sound volume table for each driving speed of FIG. 3 (S160). Here, frequency data may be obtained instead of sound volume data.

[0060]

[0061] Next, the control unit (200) provides a sound playback signal corresponding to the acquired volume data (or frequency data) to the sound output unit (300) to output sound of the acquired volume (or frequency) (S170).

[0062]

[0063] Next, the control unit (200) receives distance detection data from the ultrasonic detection unit (110), calculates the distance to the obstacle ahead, and determines whether the distance to the obstacle ahead is less than or equal to a set distance (S180).

[0064]

[0065] If the distance to the obstacle ahead is greater than the set distance (N) in the above step (S180), proceed to the above step (S100), while if the distance to the obstacle ahead is less than or equal to the set distance (Y) in the above step (S180), the control unit (200) provides an alarm playback signal to the sound output unit (300) to generate an alarm (S190).

[0066]

[0067] Meanwhile, if a collision occurs in the above step (S140) (Y), the control unit (200) notifies the emergency situation room server (400) of the collision situation through the user terminal (M), and also provides collision location data from the user terminal (M) to the emergency situation room server (400) (S200).

[0068] Next, the emergency situation room server (400) deploys a drone (D) to the collision site location to photograph the site and obtain a site image (S210), and analyzes the site image with AI to recognize the situation at the site and provides command data to the ambulance terminal to take appropriate measures for the recognized situation at the site (S220).

[0069]

[0070] According to the safety device of a personal mobility device according to an embodiment of the present invention, acceleration detection data is received from an acceleration detection unit to calculate the driving speed of the personal mobility device, and distance detection data is received from an ultrasonic detection unit to calculate the distance to a front obstacle, and a sound playback signal corresponding to the driving speed is provided to a sound output unit to output a virtual sound different from the driving speed, and when the distance to the front obstacle becomes less than or equal to a set distance, an alarm playback signal is provided to the sound output unit to generate an alarm, and based on the acceleration detection data and the angular velocity detection data received from the angular velocity detection unit, the collision of the personal mobility device is determined, and when a collision occurs, the collision situation is reported to an emergency control room server through a user terminal, thereby preventing safety accidents caused by contact between the user of the personal mobility device and an obstacle (pedestrian, vehicle, building wall, etc.) and allowing the emergency control room server to be notified of the collision when it occurs to take action.

[0071]

[0072] Optimal embodiments have been disclosed in the drawings and specification, and specific terms have been used, but these are used only for the purpose of describing the embodiments of the invention and are not intended to limit the meaning or the scope of the invention as described in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the invention should be determined by the technical spirit of the appended claims.

Claims

1. A safety device for a personal mobility device that is installed on the personal mobility device, generates different virtual sounds depending on the driving speed, and notifies an emergency control room server of the collision situation in the event of a collision to recognize the situation at the scene, An acceleration sensing unit (100) configured to detect the acceleration of the above personal mobility device; An ultrasonic detection unit (110) configured to detect the distance to an obstacle in front of the personal mobility device using ultrasound; An angular velocity detection unit (120) configured to detect the angular velocity of the above personal mobility device; A sound output unit (300) configured to output sound; and A safety device for a personal mobility device comprising: a control unit (200) configured to receive acceleration detection data from the acceleration detection unit to calculate the driving speed of the personal mobility device, receive distance detection data from the ultrasonic detection unit to calculate the distance to a front obstacle, provide a sound playback signal corresponding to the driving speed to the sound output unit to output a virtual sound different from the driving speed, provide an alarm playback signal to the sound output unit to generate an alarm when the distance to the front obstacle becomes less than or equal to a set distance, determine whether the personal mobility device will collide based on the acceleration detection data and angular velocity detection data, and notify the emergency situation room server (400) of the collision situation through the user terminal (M) when a collision occurs.

2. In Paragraph 1, The above control unit (200) is A safety device for a personal mobility device that inputs the above acceleration detection data and angular velocity detection data into a deep learning model trained on a dataset of acceleration data, angular velocity data, and collision detection data to obtain collision detection data and determine whether a collision occurs.

3. In Paragraph 1, The above-mentioned virtual sound, which varies according to driving speed, is a safety device for a personal mobility device that has a higher volume as driving speed increases.

4. In Paragraph 1, The above-mentioned virtual sound, which varies according to driving speed, is a safety device for a personal mobility device having a sound with a higher frequency as driving speed increases.

5. In Paragraph 3, The above control unit (200) is a safety device for a personal mobility device that obtains data of the volume using a speed-volume table based on the driving speed data.

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