Data generation device, gait measurement system, data generation 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 road surface determination unit that determines the road surface condition of the walkway at the location corresponding to the aforementioned location data, A generation unit that generates gait data using the aforementioned sensor data, A correction unit that corrects the gait data according to the road surface condition of the walkway, A data generation device comprising: an output unit that outputs the corrected gait data.

2. The road surface discrimination unit is Using a road surface discrimination model that outputs the road surface category of the walkway at the location of the location data in response to the input of the location data, the road surface category of the walkway at the user's location is determined. The generating unit is The data generation device according to claim 1, which corrects the gait data measured according to the user's walking to

3. The aforementioned road surface discrimination model is This machine learning model is generated by machine learning using a dataset where the aforementioned location data is the explanatory variable and the aforementioned road surface category is the target variable, as training data. The aforementioned gait data correction model is: The data generation device according to claim 2, wherein the machine learning model is trained using a dataset in which the gait data measured for each of the aforementioned road surface categories is used as explanatory variables and the reference gait data measured on the reference road surface is used as the target variable.

4. The road surface discrimination unit is The data generation device according to claim 2, which corrects the gait data measured according to the user's walking to

5. The road surface discrimination unit is The road surface category is determined for each of the multiple locations within the accuracy range of the position data. The correction unit, For each of the multiple positions within the accuracy range, the gait data is corrected according to the road surface category. A weight corresponding to the area ratio of the road surface category included in the accuracy range is multiplied by each of the multiple gait data corrected for each road surface category. The data generation device according to claim 2, which calculates the sum of a plurality of gait data corrected for each road surface category, each weighted according to the area ratio of the road surface category, as the corrected gait data.

6. The output unit is, The data generation device according to claim 1, which displays information corresponding to the road surface condition of the walkway on which the user is walking on the screen of a mobile terminal used by the user.

7. The output unit is, The data generation device according to claim 6, which is optimized to the road surface conditions of the walkway on which the user walks, and displays information that prompts the user to make a decision on the screen of the mobile terminal carried by the user.

8. A data generation device according to any one of claims 1 to 7, A gait measurement system comprising: a sensor for measuring acceleration and angular velocity; a measuring device for generating sensor data using the acceleration and angular velocity measured by the sensor; and transmitting the generated sensor data to the data generation 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. Determine the road surface condition of the walkway at the location corresponding to the aforementioned location data, Gait data is generated using the aforementioned sensor data. The gait data is corrected to match the road surface condition of the aforementioned walkway. A data generation method for outputting the corrected gait data.

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 determining the road surface condition of the walkway at the location corresponding to the aforementioned location data, A process for generating gait data using the aforementioned sensor data, A process to correct the gait data according to the road surface condition of the walkway, A program that causes a computer to perform a process to output the corrected gait data.