Self-excitation resonance signal detection method for membrane materials and self-excitation resonance signal treatment method for membrane materials
A technology of resonant signal and detection method, which is applied in the direction of analyzing solids using sonic/ultrasonic/infrasonic waves, can solve the problems of insensitivity to weak amplitude signals, low signal-to-noise ratio, etc., and achieves fast response to received signals, high measurement accuracy, and wide market. Foreground effect
Inactive Publication Date: 2015-07-29
SUZHOU DANPINGGE INSTR CO LTD
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The advantage of this method is that it does not need to be made into a self-sustaining film, and it can measure films whose thickness is more than an order of magnitude lower than that of the sound velocity method, but there are disadvantages such as weak amplitude signals, insensitivity, and low signal-to-noise ratio.
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] see Figure 1-Figure 2 , the embodiment of the present invention includes:
[0024] A method for detecting a self-excited resonance signal of a film material, comprising the following steps:
[0025] Use a signal generator to transmit the excitation signal to the excitation electrode, the membrane is arranged in parallel with the excitation electrode, the membrane self-excited resonance, and generates the first resonance signal with a natural frequency of ω, and at the same time, a carrier generator is used t...
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The invention discloses a self-excitation resonance signal detection method for membrane materials and a self-excitation resonance signal treatment method for membrane materials. The self-excitation resonance signal detection method for membrane materials comprises the following steps: transmitting an excitation signal to an exciting electrode by a signal generator, arranging a membrane to be parallel to the exciting electrode, enabling the membrane to be subjected to self-excitation resonance to generate a first resonance signal with an inherent frequency omega, at the same time, transmitting a carrier signal with the frequency omega<0> to the membrane by using a carrier generator, enabling the carrier signal and the first resonance signal to be subjected to modulation, transmitting the signals subjected to modulation to a signal receiver through a receiving electrode parallel to the membrane, and obtaining a resonance signal of the membrane through a demodulator. Through the adoption of the manner, the self-excitation resonance signal detection method for membrane materials and the self-excitation resonance signal treatment method for membrane materials have the advantages of being high in signal receiving response, capable of treating the weak membrane resonance signal, and high in measuring precision, and have wide market prospect in popularization of the self-excitation resonance signal detection method for membrane materials and the self-excitation resonance signal treatment method for membrane materials.
Description
technical field [0001] The invention relates to the technical detection field of membrane materials, in particular to a method for detecting self-excited resonance signals of membrane materials and a signal processing method. Background technique [0002] Membrane materials include metals, ceramics, and polymer membranes, which are traditional and vital materials in membrane materials. It is widely used in the fields of electronics, microelectronics, information and optics. In recent years, its application has expanded from traditional electronic devices such as resistors and transistors to solar cells, gas sensors, windows of cruise missiles, etc. Due to the good application prospects of membrane materials, how to accurately measure its mechanical, electrical, optical and other physical parameters has become the research focus of this functional membrane material. [0003] When studying the mechanical properties of a membrane, it is first necessary to know its elasticity ...
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Inventor郭丽君庄重程帜军王先平方前锋
OwnerSUZHOU DANPINGGE INSTR CO LTD