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    • 1. 发明申请
    • CONTROL APPARATUS AND METHOD FOR ELECTROMECHANICAL TRANSDUCER DEVICE, AND MEASUREMENT SYSTEM
    • 电动传感器装置的控制装置和方法及测量系统
    • WO2011062208A1
    • 2011-05-26
    • PCT/JP2010/070523
    • 2010-11-11
    • CANON KABUSHIKI KAISHAKANDORI, AtsushiMAJIMA, Masao
    • KANDORI, AtsushiMAJIMA, Masao
    • B06B1/02G01N29/24G01N21/17
    • B06B1/0292G01N21/1702G01N29/2418
    • There is a case in which a generated acoustic wave is decreased owing to the attenuation of light, whereby a desired output is not obtained from an electromechanical transducer device that receives the acoustic wave. The control apparatus for controlling an electromechanical transducer device of the present invention includes: a conversion unit that converts a current output from a first electrode of the electromechanical transducer device to a voltage; a DC voltage applying unit that applies a DC voltage to a second electrode arranged with a gap between itself and the first electrode; and a generation unit that generates a control signal which makes at least one of the DC voltage and a conversion ratio for converting the current to the voltage be changed, on the basis of information about an elapsed time from a point in time at which an inspection object was irradiated with light.
    • 存在由于光的衰减而产生的声波降低的情况,从而从接收声波的机电换能器装置未获得期望的输出。 本发明的机电换能器装置的控制装置包括:转换单元,其将从机电换能器装置的第一电极输出的电流转换为电压; 直流电压施加单元,其向在其自身和所述第一电极之间设置有间隙的第二电极施加DC电压; 以及生成单元,其基于关于从检查的时间点起的经过时间的信息,生成将DC电压和用于将电流转换为电压的转换比中的至少一个变化的控制信号 物体用光照射。
    • 7. 发明申请
    • ELECTROMECHANICAL TRANSDUCER
    • 机电传感器
    • WO2011070756A1
    • 2011-06-16
    • PCT/JP2010/007059
    • 2010-12-03
    • CANON KABUSHIKI KAISHAKANDORI, AtsushiMAJIMA, Masao
    • KANDORI, AtsushiMAJIMA, Masao
    • B06B1/02G01N29/24H04R19/00
    • B06B1/0269G01N29/2412G01S15/02
    • Provided is an electromechanical transducer which is capable of correcting or compensating a fluctuation in the transmission/reception characteristics of an elastic wave transmitting/receiving unit due to applied pressure. The electromechanical transducer (102) which transmits/receives elastic waves such as ultrasound includes the elastic wave transmitting/receiving unit (201) for transmitting/receiving elastic waves, a pressure detecting unit (203) for detecting pressure that is applied to the elastic wave transmitting/receiving unit, and a correcting unit (204). Based on pressure information which is detected by the pressure detecting unit, the correcting unit performs at least one of a correction of elastic wave transmitted/received signals relevant to the elastic wave transmitting/receiving unit and a correction of the transmission/reception characteristics of the elastic wave transmitting/receiving unit.
    • 提供一种机电换能器,其能够由于施加的压力来校正或补偿弹性波发送/接收单元的发送/接收特性的波动。 发送/接收诸如超声波之类的弹性波的机电换能器(102)包括用于发送/接收弹性波的弹性波发送/接收单元(201),用于检测应用于弹性波的压力的压力检测单元(203) 发送/接收单元和校正单元(204)。 基于由压力检测单元检测到的压力信息,校正单元执行与弹性波发送/接收单元相关的弹性波发送/接收信号的校正和校正发送/接收特性的校正中的至少一个 弹性波发射/接收单元。