PROBLEM TO BE SOLVED: To provide an improvement technology related to the setting of the maximum transmission voltage satisfying a safety standard of an ultrasonic wave.SOLUTION: A voltage estimation part 52 successively calculates a new estimate for each irradiation parameter of a plurality of irradiation parameters related to an ultrasonic wave based on an upper limit of the irradiation parameter and an estimate of a transmission voltage calculated in the past. A voltage evaluation part 54 determines whether or not the maximum estimate satisfying a safety requirement, in which the plurality of irradiation parameters are equal to or lower than the upper limit, is an optimum solution, of the estimates of the transmission voltages successively calculated by the voltage estimation part 52. A voltage setting part 55 sets the maximum estimate determined as the optimum solution as the maximum transmission voltage.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】超音波の安全規格を満たす最大送信電圧の設定に係る改良技術を提供する。【解決手段】電圧推定部52は、超音波に係る複数の照射パラメータの各照射パラメータごとに、その照射パラメータの上限値と過去に算出された送信電圧の推定値に基づいて新たな推定値を次々に算出する。電圧評価部54は、電圧推定部52が次々に算出する送信電圧の推定値のうち、複数の照射パラメータが上限値以下となる安全要求を満たした最大の推定値が最適解か否かを判定する。電圧設定部55は、最適解であると判定された最大の推定値を最大送信電圧として設定する。【選択図】図2
