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    • 9. 发明申请
    • PIEZOELECTRIC CHROMIC IMPACT SENSOR
    • 压电感光度传感器
    • US20110239790A1
    • 2011-10-06
    • US12754851
    • 2010-04-06
    • Joseph KuczynskiArvind Kumar SinhaKevin Albert SplittstoesserTimothy Jerome Tofil
    • Joseph KuczynskiArvind Kumar SinhaKevin Albert SplittstoesserTimothy Jerome Tofil
    • G01L1/16G01L1/24
    • G01L5/0052G01L1/16G01L1/24
    • An impact sensor includes a piezoelectric transducer operatively connected to a chromic device. The chromic device includes a chromic material that changes from a first color state to a second color state in response to electric power generated by the piezoelectric transducer when exposed to a given level of impact force. The chromic material is bistable so that the chromic material remains in the second color state for a significant amount of time. An impact force to which the sensor has been subjected may be quantified by observing the chromic device. In one embodiment, the chromic material is an electrochromic material, such as a viologen, that changes through a color gradient of light transmission states from the first color state to the second color state. A printed color gradient may be used to aid in quantifying the impact force. In another embodiment, the chromic device includes a thermochromic material.
    • 冲击传感器包括可操作地连接到铬装置的压电传感器。 铬装置包括当暴露于给定水平的冲击力时响应于由压电换能器产生的电力而从第一颜色状态改变到第二颜色状态的铬材料。 铬材料是双稳态的,使得铬材料在相当长的时间内保持在第二颜色状态。 传感器已经受到的冲击力可以通过观察铬装置来量化。 在一个实施例中,铬材料是电致变色材料,例如紫精,其通过从第一颜色状态到第二颜色状态的光透射状态的颜色梯度变化。 可以使用印刷的色彩梯度来帮助量化冲击力。 在另一个实施方案中,铬装置包括热变色材料。