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    • 1. 发明授权
    • Sensitivity adjusting equipment of photoelectric smoke detector
    • 光电式烟雾探测器灵敏度调节装置
    • US06797959B2
    • 2004-09-28
    • US10223240
    • 2002-08-19
    • Shenq-Tsong ChangHo-Lin TsayTai-Shan LiaoBih-Chang WangTing-Ming Huang
    • Shenq-Tsong ChangHo-Lin TsayTai-Shan LiaoBih-Chang WangTing-Ming Huang
    • G01J508
    • G08B29/22G08B17/107G08B17/113
    • The sensitivity adjusting equipment applied to a photoelectric smoke detector is provided. The photoelectric smoke detector includes a luminous component for providing an input light and a detecting component for receiving an even output light. The sensitivity adjusting equipment includes a light-scattering device having a scattering component and an adjustable hole for scattering the input light evenly and adjusting an intensity of the input light so as to output the even output light to the detecting component. The sensitivity adjusting equipment also includes a movable platform having a first brace connected to the photoelectric smoke detector and a supporting base having a second brace connected to the light-scattering device. The movable platform is moved to make the photoelectric smoke detector and the light-scattering device combined to adjust the sensitivity of the photoelectric smoke detector.
    • 提供了应用于光电式烟雾探测器的灵敏度调节设备。 光电式烟雾检测器包括用于提供输入光的发光部件和用于接收均匀输出光的检测部件。 灵敏度调节装置包括具有散射分量的光散射装置和用于均匀地散射输入光的可调节孔,并且调节输入光的强度,以将均匀的输出光输出到检测部件。 灵敏度调节设备还包括具有连接到光电烟雾探测器的第一支架的可移动平台和具有连接到光散射装置的第二支架的支撑座。 移动平台移动,使光电式烟雾探测器和光散射装置相结合,调节光电式烟雾探测器的灵敏度。
    • 5. 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 。