PROBLEM TO BE SOLVED: To provide a blink detection system using a doppler sensor, capable of detecting a blink with high accuracy without the need of machine learning.SOLUTION: A blink detection system comprises: a doppler sensor for acquiring a doppler signal； a first detection unit for determining an amplitude signal of the doppler signal, dividing the amplitude signal into plural cells which are continuous in time axial direction, determining a first threshold based on amplitude values of preceding and succeeding cells which are not adjacent to a cell of interest, and then detecting a signal component which is equal to or greater than the first threshold in the cell of interest； and a blink determination unit for, based on characteristics of a blink waveform, removing an erroneous detection from the signal component which is equal to or greater than the first threshold, and determining a residual signal component as a blink.SELECTED DRAWING: Figure 1【課題】機械学習が不要で高精度な瞬き検出を可能とする、ドップラーセンサを用いた瞬き検出システムを提供すること。【解決手段】本瞬き検出システムは、ドップラー信号を得るドップラーセンサと、前記ドップラー信号の振幅信号を求め、前記振幅信号を時間軸方向に連続する複数のセルに分割し、注目するセルに隣接しない前後のセルの振幅値に基づいて第１閾値を決定し、前記注目するセルにおいて前記第１閾値以上の信号成分を検出する第１検出部と、瞬き波形の特徴に基づいて、前記第１閾値以上の信号成分の中から誤検出を除去し、残りの信号成分を瞬きと判定する瞬き判定部と、を有する。【選択図】図１
