ULTRASONIC TRANSMITTER-RECEIVER

• Main Authors: MATSUMOTO SAYURI, KATAKURA KAGEYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 08.12.2016
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

PROBLEM TO BE SOLVED: To improve a spatial resolution and reduce an unobservable region to be formed in the vicinity in a three-dimensional measurement device performing sweep irradiation of ultrasonic signals.SOLUTION: A measurement device using ultrasonic signals is configured to: include a transmitter provided with a one-dimensionally-arrayed vibrator divided into many partial apertures; transmit an ultrasonic signal by applying a drive signal for each partial aperture; and involve a receiver which receives a signal obtained by reflecting the transmitted signal on a target object. In the measurement device, an azimuth resolution and observation region restriction can be simultaneously improved with selection of the configuration of the receiver, the configuration of concave convergence and the configuration of the drive signal.SELECTED DRAWING: Figure 12 【課題】超音波信号の掃引照射による三次元計測装置において、空間分解能を改善し、近傍に形成される観測不能領域を減少させる。【解決手段】超音波信号による計測装置において、一次元配列振動子を多数の部分口径に分割した送波器を有し、該部分口径ごとに駆動信号を印加して超音波信号を送信し、該送信信号が、目的物体により反射された信号を受信する受波器を有する構成において、受波器の構成と凹面収束の構成および、駆動信号の構成を選定する事により、方位分解能および観察領域制限を同時に改善可能とする。【選択図】図１２