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A novel opto-electronics interface-circuit design for sensingapplications

机译:用于传感的新型光电接口电路设计应用领域

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A new and practical opto-electronic sensor interface is presented.It consists of a transmitter and a receiver for sensors measuringoptical attenuation. Emphasis is given to commonly-neglectedbackground-noise-interference and dynamic-range-limitation problems. Thedesign of the electronic circuitry allows sensors to operate inmanufacturing environments. A modulated laser-diode, together withoptical and electrical filtering, reduces the optical noise to less thana measurable level, even in extremely bright“light-infested” surroundings. In addition, a novel approachis introduced which substantially increases the sensor's dynamic range.The power of the light-source is monitored in a dynamicintensity-control loop designed to perform “floating-point”measurements according to the attenuation in the optical path. Thesensor acquires the combined dynamic ranges of the detector andlight-source circuits
机译:提出了一种新的实用的光电传感器接口。 它由用于传感器测量的发射器和接收器组成 光学衰减。重点放在常被忽视的地方 背景噪声干扰和动态范围限制问题。这 电子电路的设计允许传感器在 制造环境。调制的激光二极管,以及 光学和电气滤波,将光学噪声降低到小于 可测量的水平,即使在非常明亮的情况下 “充满光”的环境。另外,一种新颖的方法 引入,大大增加了传感器的动态范围。 动态监控光源的功率 强度控制回路,旨在执行“浮点” 根据光路中的衰减进行测量。这 传感器获取检测器的组合动态范围,然后 光源电路

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