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Drop Analyzer optical capacitor signal processing circuit

Author: ZhangChunSong
Tutor: HaoYangMei；SongQing
School: Beijing University of Posts and Telecommunications
Course: Mechanical and Electronic Engineering
Keywords: Optical , capacitive Drop Analyzer Optical signal processing circuit Capacitor signal processing circuit Signal acquisition Droplets fingerprint
CLC: TH83
Type: Master's thesis
Year: 2011
Downloads: 30
Quote: 0
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Abstract


Optical , capacitive Drop Analyzer (FCDA: Fiber-Capacitive Drop Analyzer) analysis technique is the use of fiber-optic and capacitive droplet droplets drops analyze technical design of the new analytical instruments, use of monitoring optical signal droplet growth process and capacitance signal changes worth to \The fingerprint can be obtained through the liquid to be measured on the physical and chemical properties. Using this principle , the instrument can distinguish nuances of liquid measurement , and in environmental protection, pharmaceutical technology , food and beverage and all other areas involving liquid detection . This topic from the \instrument \. In this thesis, completed the following tasks: ( a ) for the design of optical signal processing circuit is analyzed in detail : including the light source modulation circuit design, photoelectric conversion and preamplifier circuit design , linear detector circuit design, circuit design and reverse amplification a / D converter design ; ( 2 ) the FM signal capacitance measurement circuit for a detailed analysis of the design include: the capacitance signal into the frequency of the oscillation circuit , the frequency measurement circuit , the interface circuit ; on the use of the pulse counting method measuring frequency error analysis ; and describes the microcontroller and PC serial communication ; ( 3 ) on the fiber-optic signal processing circuit capacitor circuit system board, system board introduced the objectives , design methods , techniques and circuit wiring interference prevention measures ; ( 4 ) debugging fiber capacitor signal processing circuit , the circuit performance and system stability test experiments, and through the VC control data acquisition card collection procedures to perform optical and capacitive signal acquisition ; ( 5 ) according to the actual finished circuit debugging results by collecting the fiber capacitance signal , samples were tested for typical experiment , the experimental results curve - \

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Component analysis instrument
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