DETERMINATION RESULT OUTPUT DEVICE AND ABNORMALITY DETECTION DEVICE

To determine any one of a first state in which there is a vehicle in a target section, a second state in which there is no vehicle in the target section and there is a vehicle in an adjacent section, and a third state in which there is no vehicle in both the target section and the adjacent section, by using a track voltage and a phase difference between the track voltage and a localized voltage.SOLUTION: A first acquisition unit 111 acquires a value of a track voltage of a target section measured by a measurement unit 10. A second acquisition unit 112 acquires a phase difference between the track voltage measured by the measurement unit 10 and a localized voltage. A calculation unit 113 calculates a moving average of the track voltage. The calculation unit 113 calculates the moving average of the phase difference. A determination unit 114 determines that a state of the target section becomes a first state when the moving average of the track voltage is changed to be less than a threshold as compared with the threshold. Further, the determination unit 114 observes the change of the moving average of the phase difference when it is determined that the state of the target section is in the second state and then determines that the state of the target section becomes the third state when the phase difference crosses a specified value.SELECTED DRAWING: Figure 8 【課題】対象区間に車両が有る第１状態、対象区間に車両が無く、かつ、隣接区間に車両が有る第２状態、及び、対象区間にも隣接区間にも車両が無い第３状態のいずれであるかを、軌道電圧と、軌道電圧・局部電圧の位相差と、を用いて判定する。【解決手段】第１取得部１１１は、計測部１０で計測された対象区間の軌道電圧の値を取得する。第２取得部１１２は、計測部１０で計測された軌道電圧と、局部電圧との位相差を取得する。算出部１１３は、軌道電圧の移動平均を算出する。また、算出部１１３は、位相差の移動平均を算出する。判定部１１４は、軌道電圧の移動平均を閾値と比較して、閾値未満に変化したときに、対象区間の状態が第１状態になったと判定する。また、判定部１１４は、対象区間の状態が第２状態であると判定するとき、位相差の移動平均の変化を観察し、この位相差が所定値を横切ったときに、対象区間の状態が第３状態になったと判定する。【選択図】図８