Unlock instant, AI-driven research and patent intelligence for your innovation.

Anti-noise piezoelectric detection closed-loop control device for window

A technology of piezoelectric detection and closed-loop control, which is applied in the field of indoor noise reduction, can solve problems such as the inability to reduce noise, and achieve the effect of reducing and suppressing noise

Inactive Publication Date: 2015-04-29
HEILONGJIANG UNIV
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem that the existing noise is mostly transmitted into the living room through the window, and the noise cannot be reduced from being transmitted into the room through the glass. The present invention provides a closed-loop control device for anti-noise piezoelectric detection of the window

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
  • Anti-noise piezoelectric detection closed-loop control device for window
  • Anti-noise piezoelectric detection closed-loop control device for window
  • Anti-noise piezoelectric detection closed-loop control device for window

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0037] Specific implementation mode one: see image 3 with Figure 4 Describe this embodiment, the anti-noise piezoelectric detection closed-loop control device for windows described in this embodiment, it includes No. 1 piezoelectric sensor 1-1, No. 2 piezoelectric sensor 1-2, controller 2, and No. 1 piezoelectric sensor Ceramic sheet 3-1 and No. 2 piezoelectric ceramic sheet 3-2;

[0038] The No. 1 piezoelectric sensor 1-1 and the No. 2 piezoelectric sensor 1-2 have the same shape, and the two are respectively fixed on the two surfaces of the glass. The No. 1 piezoelectric sensor 1-1 and the No. 2 piezoelectric sensor Piezoelectric sensor 1-2 is mirror-symmetrically arranged with glass as a mirror; No. 1 piezoelectric ceramic sheet 3-1 and No. 2 piezoelectric ceramic sheet 3-2 have the same shape, and they are respectively pasted on the two surfaces of the glass Above, the No. 1 piezoelectric ceramic sheet 3-1 and the No. 2 piezoelectric ceramic sheet 3-2 are mirror-symmet...

specific Embodiment approach 2

[0043] Embodiment 2: The difference between this embodiment and the anti-noise piezoelectric detection closed-loop control device for windows described in Embodiment 1 is that the controller 2 includes a control unit and a drive unit,

[0044] Wherein, the control unit is used to collect the voltage signal output by No. 1 piezoelectric sensor 1-1 and the voltage signal output by No. 2 piezoelectric sensor 1-2 to obtain No. 1 piezoelectric sensor 1-1 and No. 2 piezoelectric sensor 1 -2 differential pressure signal,

[0045] It is also used to obtain the driving voltage of the No. 1 piezoelectric ceramic sheet 3-1 and the No. 2 piezoelectric ceramic sheet 3-2 according to the differential pressure signal, and according to the No. 1 piezoelectric ceramic sheet 3-1 and the No. 2 piezoelectric ceramic sheet The drive voltage of chip 3-2 generates a PWM drive signal with a corresponding duty cycle and outputs it to the drive unit;

[0046] The driving unit is used to send driving s...

specific Embodiment approach 3

[0047] Specific implementation mode three: see Figure 5 Describe this embodiment. The difference between this embodiment and the anti-noise piezoelectric detection closed-loop control device for windows described in Embodiment 2 is that the control unit is realized by a single-chip microcomputer, and the type of the single-chip microcomputer is C8051F120 single-chip microcomputer. The drive unit includes No. 1 FET M1, No. 2 FET M2, No. 1 inductor L1, No. 2 inductor L2, No. 1 capacitor C1 and No. 2 capacitor C2;

[0048] The pin AIN0.0 of the C8051F120 single-chip microcomputer is connected with the data signal output end of No. 1 piezoelectric sensor 1-1,

[0049] The pin AIN0.1 of the C8051F120 single-chip microcomputer is connected to the data signal output end of the No. 2 piezoelectric sensor 1-2,

[0050] The pin COM of the C8051F120 single-chip microcomputer and the ground terminal of the No. 1 piezoelectric sensor 1-1, the ground terminal of the No. 2 piezoelectric se...

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 provides an anti-noise piezoelectric detection closed-loop control device for a window, belongs to the field of indoor noise removal, and solves the problems that most existing noise is transmitted into a room through the window and noise transmitted into the room through the window cannot be reduced. The anti-noise piezoelectric detection closed-loop control device for the window comprises a piezoelectric sensor I, a piezoelectric sensor II, a controller, a piezoelectric ceramic piece I and a piezoelectric ceramic piece II, wherein the piezoelectric sensor I and the piezoelectric sensor II have the same shape, are fixed on two surfaces of glass respectively and are arranged in a mirror symmetry mode with the glass serving as a mirror plane; the piezoelectric ceramic piece I and the piezoelectric ceramic piece II have the same shape, are stuck on the two surfaces of the glass respectively and are arranged in a mirror symmetry mode with the glass serving as the mirror plane; the piezoelectric sensor I and the piezoelectric ceramic piece I are located on the same side of the glass. The anti-noise piezoelectric detection closed-loop control device is mainly applied to window glass.

Description

technical field [0001] The invention belongs to the field of noise reduction in living rooms. Background technique [0002] There are often noise disturbances from the external environment in the living room. Most of these noises are introduced from the windows, which are indoor noises caused by external noise acting on the window glass to make it vibrate. Therefore, one of the main ways to reduce the noise of living room windows is to reduce the vibration of windows caused by external noise. [0003] Scientific experiments have proved that: piezoelectric ceramic materials have direct piezoelectric effect and inverse piezoelectric effect, respectively see figure 1 with figure 2 . When the piezoelectric ceramic material is extruded by external force, there will be positive and negative charges on the piezoelectric ceramic material, which is the positive piezoelectric effect, and the deformation generates voltage, which produces a piezoelectric sensor. When electricity i...

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): H02N2/00F16F15/02
Inventor 王丁孙书利
Owner HEILONGJIANG UNIV