基于负差分电阻晶体管结构的光频气体流量计

A. Osadchuk, V. Osadchuk, I. Osadchuk, N. Titova, Olga Yu. Pinaeva, P. Kisała, S. Rakhmetullina, A. Kalizhanova, Zhanar Azeshova
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引用次数: 1

摘要

研究了一种基于负差分电阻晶体管结构的光频气体流量计。提出了一种工作在微波范围(0.85至1.5 GHz)的光频气体流传感器的原理图和设计,该传感器由双极场效应晶体管和肖特基势垒组成,作为使用光敏电阻的光敏元件。建立了一种基于负差分电阻晶体管结构的光频气体流量计的数学模型,该模型可以在较宽的频率范围内获得换能器的主要特性。理论和实验表明,通过控制电压和功率的变化来控制无功元件和负差分电阻的可能性,它扩展了光学换能器的功能,并允许转换函数在(0.1 - 0.2)%内线性化。实验研究表明,光频气体流量传感器的转换函数在3v ~ 3.5 V范围内灵敏度和线性度最高。所研制的基于晶体管结构的NDR光频气体流量传感器灵敏度为146 kHz/l /h,测量误差为±1.5%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optical-frequency gas flow meter on the basis of transistor structures with negative differential resistance
The article investigated the optical-frequency gas flow meter based on a transistor structure with negative differential resistance (NDR). A schematic diagram and design of an optical-frequency gas flow transducer that operates in the microwave range (0.85 to 1.5 GHz), which consists of a bipolar and field-effect transistor with a Schottky barrier, is proposed as a photosensitive element using a photoresistor. A mathematical model of an optical-frequency gas flow meter based on a transistor structure with negative differential resistance has been developed, which allows one to obtain the main characteristics of the transducer in a wide frequency range. Theoretically and experimentally, the possibility of controlling both the reactive component and the negative differential resistance from changes in control voltage and power is shown, it extends the functionality of optical transducers and allows linearization of the conversion function within (0.1 - 0.2)%. Experimental studies have shown that the greatest sensitivity and linearity of the conversion function of an opticalfrequency gas flow transducer lies in the range from 3 V to 3.5 V. The sensitivity of the developed optical-frequency gas flow transducer based on a transistor structure with NDR is 146 kHz/liter/hour, and the measurement error is ± 1.5%.
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