Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Micro-water content test system based on resonant cavity perturbation method

A micro-moisture content and testing system technology, which is applied in the direction of using microwaves to test moisture content, can solve problems such as the influence of measurement results

Inactive Publication Date: 2009-12-30
周建明
View PDF5 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing moisture measurement principle that can realize online non-destructive measurement, the measurement results are mostly affected by the density of the material to be measured

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micro-water content test system based on resonant cavity perturbation method
  • Micro-water content test system based on resonant cavity perturbation method
  • Micro-water content test system based on resonant cavity perturbation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] 5.1 The overall scheme of the micro-water content test system by the resonant cavity perturbation method

[0014] According to the volume suitable for the solid resonant cavity, the industrially applicable frequency and the development of electronic technology, the parameters such as the frequency of the resonant cavity perturbation method micro-water content testing system are optimized. According to the frequency allocation of the Radio Regulatory Commission, the frequency of 2.4GHz is relatively used in this topic.

[0015] Resonant cavity perturbation method micro-water content test system scheme such as figure 1 As shown, this system includes a single-port resonant cavity 1, a waveguide microstrip transition device 2, a ring bridge 3, a VCO voltage-controlled oscillator (HMC385) 4, a PLL chip (AD4106) 5, a constant temperature crystal oscillator (100MHz) 6, and a detector (AD8318) 7, amplifier (HMC385) 8, ADC (AD7656) 9, FPGA (XC3S400) 10, DSP (TMS320F2812) 11, pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a micro-water content test system based on a resonant cavity perturbation method, which covers the technical fields of resonant cavities, frequency synthesizers, transmit-receive modules, signal processing and system design proposals. The system provides a proposal of frequency prescience; the proposal adopts technology of a constant temperature reference crystal oscillator and a phase-locked loop (PLL) to realize the output of a smaller stepping frequency signal; a mater controller can control the PLL according to a measurement process; VCO output frequency is set to a required frequency point so that the frequency is not needed to be measured in the process of measuring a Q value; and the proposal can accurately measure the Q value of the resonant cavity under the conditions of on-load and no-load. The system eliminates a frequency measurement module, greatly reduces the technical difficulty of the system and reduces the cost.

Description

1. Technical field [0001] The invention relates to a resonant cavity perturbation method micro-water content testing system, and the system covers the technical fields of a resonant cavity, a frequency synthesizer, a transceiver module, signal processing, and system design schemes. The microwave resonant cavity perturbation method to measure the water content in turbine oil is based on the perturbation of the resonant cavity, that is, the principle that the resonant frequency of the resonant cavity shifts with the change of the dielectric constant of the dielectric in the cavity. The system can be applied to the measurement of micro-water content in petroleum, water conservancy, etc. 2. Background technology [0002] The National Metrology Technical Specification defines the content of water in solid and liquid substances as moisture. Moisture is one of the most important parameters to know during production, transport, storage, trade and handling of solid and liquid substa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N22/04
Inventor 周建明
Owner 周建明
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com