Method and apparatus for testing the quality of fruit
    1.
    发明授权
    Method and apparatus for testing the quality of fruit 失效
    测试水果质量的方法和装置

    公开(公告)号:US5811680A

    公开(公告)日:1998-09-22

    申请号:US557130

    申请日:1996-03-20

    摘要: A method of testing the quality of a fruit including applying a dynamic impact force to the fruit, detecting the mechanical response of the fruit to the dynamic force via a piezoelectric film transducer supported on a displaceable resilient base member such that the film transducer is bent by the dynamic impact force, to induce a strain in the film transducer, and the film transducer outputs an electrical signal corresponding to the change of the induced strain in the film transducer caused by the dynamic force and analyzing the electrical signal to indicate the quality of the fruit. Apparatus for carrying out the method is also described and claimed.

    摘要翻译: PCT No.PCT / US94 / 06869 Sec。 371日期:1996年3月20日 102(e)1996年3月20日PCT 1994年6月13日PCT公布。 公开号WO94 / 29715 日期1994年12月22日一种测试水果质量的方法,包括对果实施加动态冲击力,通过支撑在可位移的弹性基底构件上的压电薄膜换能器检测果实对动力的机械响应, 膜传感器通过动态冲击力弯曲,引起薄膜换能器中的应变,并且薄膜换能器输出对应于由动力引起的薄膜换能器中的感应应变的变化的电信号,并分析电信号 表明水果的质量。 还描述和要求保护用于执行该方法的装置。

    Method for a non-destructive determination of quality parameters in
fresh produce
    2.
    发明授权
    Method for a non-destructive determination of quality parameters in fresh produce 失效
    用于非破坏性测定新鲜农产品质量参数的方法

    公开(公告)号:US5589209A

    公开(公告)日:1996-12-31

    申请号:US427219

    申请日:1995-04-24

    摘要: A method and a system for a non-destructive determination of quality parameters in fresh produce. Ultrasonic sound waves are transmitted into the produce from a transducer and are received by a nearby transducer, both gripped via special arrangement cage, allowing local ultrasonic tests on the produce. Various acoustical parameters such as wave velocity and signal attenuation of the detected sound waves are analyzed in conjunction with the maturity of the sample.

    摘要翻译: 一种用于非破坏性测定新鲜农产品质量参数的方法和系统。 超声波从传感器传输到产品中,并由附近的传感器接收,两个传感器通过特殊的布置保持架来抓握,从而允许对产品进行局部超声波测试。 结合样本的成熟度分析各种声学参数,如检测到的声波的波速和信号衰减。