Trace substance detecting device and trace substance detecting method based on parameter excitation and synchronous resonance
A technology of parameter excitation and detection device, applied to the device of desynchronization resonance principle, based on the field of parameter excitation and synchronization, it can solve the problems of inaccurate detection of bifurcation points, limitation of frequency sweep step size, etc., so as to suppress energy dissipation and improve Sensitivity, high-sensitivity effects
Pending Publication Date: 2018-11-23
JILIN UNIV
View PDF0 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The above results show that parametric excitation can achieve higher resolution, but limited by the sweep step size, the bifurcation point detection is not accurate
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] see figure 1 , including at least one reference beam 2, at least one reference beam 1, and at least one vibration pickup beam 3, wherein the vibration pickup beam 3 is a cantilever short beam, one end of which is fixed on the base two 5, the reference excitation beam 2, the reference beam 3 The two ends of beam 1 are respectively fixedly connected with base 1 4 and base 2 5, the synchronous coupling beam 1 6 is fixedly connected with base 1 4, and respectively connected with reference beam 1 and reference beam 2, and the synchronous coupling beam 2 7 is connected with base 2 5 is fixedly connected, and is also connected to the reference beam 1, the reference beam 2 and the vibration pickup beam 3 respectively. There is a piezoelectric excitation induction electrode 301 on the upper surface of the vibration pickup beam 3 close to the joint with the synchronous coupling beam 2 7, and the reference beam 1 There is a piezoelectric excitation electrode 1 101 on the upper sur...
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
Login to View More Abstract
The invention relates to a trace substance detecting device and a trace substance detecting method based on parameter excitation and synchronous resonance, and belongs to trace substance detecting devices and trace substance detecting methods. The trace substance detecting device comprises at least one parametrical excitation beam, at least one reference beam, at least one vibration pickup beam, two substrates, two synchronous coupling beams, a piezoelectric excitation electrode, a piezoelectric sensing electrode, a piezoelectric excitation sensing electrode and a sensitive layer; the vibration pickup beams are cantilever beams, and the parametrical excitation beams and the reference beams are fixed beams; the parametrical excitation beams are used for receiving external stimulation, the inherent frequency of the parametrical excitation beams is changed, and triggering and sensing functions are realized through excitation and frequency sweep of the electrodes; the reference beams are used for generating synchronous resonance along with the parametrical excitation beams under triggering to suppress energy loss. The trace substance detecting device and the trace substance detecting method have the advantages that the structure is novel, materials are reduced and the functions are complete; the parametrical excitation beams and the reference beams generate synchronous resonance, the parametrical excitation beams and the vibration pickup beams generate synchronous resonance, and the parametrical excitation principle is applied to realize the triggering and sensing functions respectively, so that frequency multiplication is achieved, the sensitivity of the device is improved, and energy dissipation is inhibited.
Description
technical field [0001] The invention belongs to a trace substance detection device and method, in particular to a device and method based on the principle of parameter excitation and synchronization and desynchronization resonance which can realize two functions of triggering and sensing. Background technique [0002] Based on the synchronous resonance principle of nonlinear vibration mechanics, the frequency multiplication effect of low frequency excitation and high frequency pickup can be realized. When there is a certain integer ratio relationship between the natural frequencies of two harmonic oscillators, synchronous resonance occurs. The phenomenon that the vibration frequencies of two harmonic oscillators maintain a certain multiple relationship is called phase locking, also known as phase locking. The team of Tohoku University in Japan determined the phase locking phenomenon through the study of two coupled beams in the state of synchronous resonance, measured the w...
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
Login to View More IPC IPC(8): G01N19/00G01N33/00G01N5/02
CPCG01N5/02G01N19/00G01N33/00
Inventor 王东方杜旭安临君郑果文夏操万胜来冯昊楠孙超超滕浩王昕杨旭刘欣殷志富
Owner JILIN UNIV