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    • 2. 发明授权
    • Non-visible particle detection based on smart phone
    • 基于智能手机的不可见粒子检测
    • US08735842B2
    • 2014-05-27
    • US13355525
    • 2012-01-21
    • Din Ping TsaiChih-Chieh WuTai-Shan LiaoChi-Hung Huang
    • Din Ping TsaiChih-Chieh WuTai-Shan LiaoChi-Hung Huang
    • G01T1/20
    • G01T1/023G01T7/00
    • A non-visible particle detection device includes an optical module capable of converting an ionizing radiation into visible light. The optical module includes has an attachment unit that is configured to removably attach the optical module to the image capturing module of a mobile device. The image capturing module generates a photon digital image based on the photons converted from the ionizing radiation. The mobile device can be implemented with a radiation dose determining module to execute a radiation dose equivalent calculation method. Based on the pixel brightness analysis of the photon digital image, the radiation equivalent dose can be determined. This method sums up the total brightness of all pixels in the images, determines whether the total brightness is smaller than the minimum effective brightness, and determines the radiation equivalent dose when the total brightness is equal to or larger than the minimum effective brightness.
    • 不可见的粒子检测装置包括能够将电离辐射转换成可见光的光学模块。 光学模块包括具有附接单元,其被配置为将光学模块可移除地附接到移动设备的图像捕获模块。 图像捕获模块基于从电离辐射转换的光子产生光子数字图像。 移动设备可以用辐射剂量确定模块实现,以执行辐射剂量等效的计算方法。 基于光子数字图像的像素亮度分析,可以确定辐射等效剂量。 该方法将图像中所有像素的总亮度相加,确定总亮度是否小于最小有效亮度,并且当总亮度等于或大于最小有效亮度时确定辐射等效剂量。
    • 8. 发明授权
    • Light spot position-to-pulse width converter
    • 光点位置到脉冲宽度转换器
    • US5936457A
    • 1999-08-10
    • US901582
    • 1997-07-28
    • Tai-Shan LiaoChun-Ming Chang
    • Tai-Shan LiaoChun-Ming Chang
    • G01S3/781G01S3/783H01L31/00
    • G01S3/783G01S3/781
    • A converter for providing an electrical signal according to the status of a light spot applied thereto, comprises: a sensor for sensing the light spot and generating a position current according to the position of the light spot sensed thereat; and an operating circuit for providing the sensor with an operating current when the light spot is sensed by the sensor and for outputting a status current corresponding to the operating current. The sensor comprises two electrodes each providing a current with magnitude determined according to the distance between it and the position of the light spot sensed thereat. The position current is obtained by subtracting the first electrode current from the second electrode current. A pulse width modulator characterized by a narrow pulse generator is further included to output a sequence of pulses each with pulse width determined according to the position current and with cycle period determined according to the period of a sequence of narrow pulses generated by the narrow pulse generator.
    • A转换器,用于根据施加到其上的光斑的状态提供电信号,包括:传感器,用于感测光点并根据其上感测到的光斑的位置产生位置电流; 以及操作电路,用于当传感器感测到光点并输出与工作电流对应的状态电流时,为传感器提供工作电流。 传感器包括两个电极,每个电极提供根据其在其上感测到的光点的距离确定的大小的电流。 通过从第二电极电流减去第一电极电流获得位置电流。 还包括具有窄脉冲发生器的脉冲宽度调制器,以输出脉冲序列,每个脉冲序列具有根据位置电流确定的脉冲宽度,并具有根据由窄脉冲发生器产生的窄脉冲序列周期确定的周期周期 。