To dynamically and automatically set up an optimum threshold level in a driving mode detection device.SOLUTION: A driving mode detection device includes: a threshold optimization unit 54 that collects time series operational data, and that dynamically creates and optimizes threshold time-series data used for detecting a driving mode; a template creation unit 55 that creates template time-series data corresponding to the driving mode using the threshold time-series data; and a driving mode determination unit 56 that detects the driving mode by applying the template time-series data to the newly collected time-series operational data.SELECTED DRAWING: Figure 1
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