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METHODS TO REDUCE POWER CONSUMPTION OF AN OPTICAL PARTICLE SENSOR VIA AN ASIC DESIGN
METHODS TO REDUCE POWER CONSUMPTION OF AN OPTICAL PARTICLE SENSOR VIA AN ASIC DESIGN
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机译:通过ASIC设计降低光学颗粒传感器功耗的方法
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摘要
A portable communication device includes one or more optical detectors to generate an analog signal in response to a change in an intra-cavity or an emitted optical power of a light source due to light backscattered from a particle and an application-specific integrated circuit (ASIC). The particle is illuminated via a light source. The ASIC includes an analog-to-digital converter (ADC) circuit, a digital delay circuit, a particle detector module and a processor. The ADC converts the analog signal to a digital signal. The digital delay circuit can store the digital signal for a predetermined or dynamically variable time interval. The particle detector module can analyze the digital signal and can generate an enable signal upon detecting a particle signature in the digital signal. The processor is coupled to the digital delay circuit and can start processing the digital signal in response to the enable signal.
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