Map update device, map generation system, map update method, and program

Claims

1. An acquisition unit that acquires sensor data measured by a measuring device mounted on the user's footwear and position data corresponding to the location where the sensor data was acquired, A gait data generation unit that generates gait data using the aforementioned sensor data, A road surface determination unit that determines the road surface condition of a walkway using the aforementioned gait data, A map update device comprising: an update unit that updates a road surface map in which the determined road surface conditions are associated with the location data and a display showing the road surface conditions for each location is set.

2. The aforementioned road surface discrimination unit is The gait data is input into a road surface discrimination model, which is a machine learning model generated by machine learning using a dataset as training data, where the gait data is used as an explanatory variable and the road surface category corresponding to the gait data is used as the target variable. The map update device according to claim 1, wherein the road surface category output from the road surface discrimination model in response to the input of the gait data is determined as the road surface condition at the location of the location data.

3. The system includes a determination unit that determines whether or not a road category is associated with the acquired location data by referring to a road category table in which the road category is associated with the location data corresponding to the location included in the road map. The determination unit, If the road surface category associated with the acquired position data is not registered in the road surface category table, an instruction to generate the gait data is output to the gait data generation unit. The aforementioned gait data generation unit, In response to instructions from the determination unit, the sensor data is used to generate the gait data. The aforementioned road surface discrimination unit is Using the aforementioned gait data, the condition of the road surface of the walkway is determined. The aforementioned update unit is, The map update device according to claim 2, which updates the road surface category table and the road surface map by associating the determined road surface condition with the position data.

4. The system includes a difference calculation unit that calculates the difference data between the generated gait data and the reference gait data. The aforementioned road surface discrimination unit is The map update device according to claim 1, which determines the road surface condition of a walkway using the calculated difference data.

5. The map update device according to claim 1, further comprising an output unit that displays information corresponding to the road surface conditions of the walkway on which the user is walking on the screen of a mobile terminal used by the user.

6. The output unit is, The map update device according to claim 5, which overlays a recommended route on the road surface map, indicating a missing area where the road surface condition cannot be determined, and displays it on the screen of the mobile terminal carried by the user.

7. The output unit is, The map update device according to claim 5, which is optimized to the road surface conditions of the walkway on which the user is walking, and displays information that prompts the user to make a decision on the screen of the mobile terminal carried by the user.

8. A map update device according to any one of claims 1 to 7, A map generation system comprising: a measuring device having sensors for measuring acceleration and angular velocity, generating sensor data using the acceleration and angular velocity measured by the sensors, and transmitting the generated sensor data to the map update device.

9. Computers The system acquires sensor data measured by a measuring device mounted on the user's footwear, and position data corresponding to the location where the sensor data was acquired. Gait data is generated using the acquired sensor data. The generated gait data is used to determine the surface condition of the walkway. A map update method that updates a road surface map in which the identified road surface conditions are associated with the location data and a display showing the road surface conditions for each location is set.

10. A process for acquiring sensor data measured by a measuring device mounted on the user's footwear and position data corresponding to the location where the sensor data was acquired, A process for generating gait data using the acquired sensor data, A process to determine the road surface condition of the walkway using the generated gait data, A program that causes a computer to perform the following steps: associate the identified road surface conditions with the aforementioned location data and update a road surface map that displays the road surface conditions for each location.