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a piezoelectric chip

A piezoelectric chip and chip technology, applied in the direction of using electric devices, using electromagnetic means, instruments, etc., can solve the problems of unfavorable weak signal and low-frequency signal acquisition, high rigidity, low output efficiency, etc., to facilitate mathematical modeling analysis and Calculation, good linear characteristics, the effect of increasing the output charge

Inactive Publication Date: 2021-08-03
西安陆海地球物理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the advantages of the circular piezoelectric sheet are large effective area, simple structure, and small volume when used as a structural part. However, due to its circular structure, it is difficult to analyze its performance by mathematical modeling, and its rigidity is large, which is not conducive to Acquisition of weak signals and low frequency signals
like figure 2 As shown, the piezoelectric sheet in the form of a single cantilever beam is simple to manufacture, easy to establish a mathematical model, and easy to control the rigidity of the system. The disadvantage is that when used as a structural part, the structural design is complicated, the volume is large, and the output efficiency is low.

Method used

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Experimental program
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Effect test

Embodiment 1

[0027] refer to image 3 and Figure 4 , a piezoelectric wafer, including a piezoelectric wafer 1 and a spring sheet 2 that are tightly fitted and consistent in shape, the piezoelectric wafer 1 includes a circular wafer 101 with a hole in the middle, and a plurality of strips arranged on the circular wafer 101 Shape wafer 103; Leaf spring 2 comprises the circular reed 202 with hole in the middle, and a plurality of bar reeds 203 that are arranged on the circular reed 202, the quantity of described bar wafer 103 and bar reed 203 Equal and one-to-one correspondence.

[0028] image 3 Among them, the number of strip wafers 103 and strip reeds 203 is 6, and 6 strip wafers 103 are evenly distributed on the circumferential direction of the circular wafer 101, and 6 strip reeds 203 are evenly distributed on the circular reed 202 in the circumferential direction.

[0029] Specifically, the length of the strip reed 203 is greater than the length of the strip wafer 103, and the end ...

Embodiment 2

[0034] Such as Figure 5 As shown, a piezoelectric wafer 1 includes a piezoelectric wafer 1 and a spring sheet 2 that are tightly fitted and consistent in shape. A plurality of strip wafers 103 ; the spring piece 2 includes a circular reed 202 with a hole in the middle, and a plurality of strip reeds 203 arranged on the circular reed 202 . Among the figure, the quantity of strip wafer 103 and strip reed 203 is 4, and 4 strip wafers 103 are evenly distributed on the circumferential direction of circular wafer 101, and 4 strip reeds 203 are evenly distributed on the circular spring. In the circumferential direction of the sheet 202. Specifically, the length of the strip reed 203 is greater than the length of the strip wafer 103, and the end of the strip reed 203 forms a mounting platform, which can be fixedly installed inside the sensor.

Embodiment 3

[0036] Such as Figure 6 As shown, a piezoelectric wafer 1 includes a piezoelectric wafer 1 and a spring sheet 2 that are tightly fitted and consistent in shape. A plurality of strip wafers 103 ; the spring piece 2 includes a circular reed 202 with a hole in the middle, and a plurality of strip reeds 203 arranged on the circular reed 202 . Among the figure, the quantity of strip wafer 103 and strip reed 203 is 3, and 3 strip wafers 103 are evenly distributed on the circumferential direction of circular wafer 101, and 3 strip reeds 203 are evenly distributed on the circular spring. In the circumferential direction of the sheet 202. Specifically, the length of the strip reed 203 is greater than the length of the strip wafer 103, and the end of the strip reed 203 forms a mounting platform, which can be fixedly installed inside the sensor.

[0037] It should be noted that the number of strip wafers and strip reeds may be N, where N is a natural number greater than or equal to 2....

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Abstract

The invention discloses a piezoelectric wafer, which belongs to the application field of piezoelectric technology. The piezoelectric wafer includes a piezoelectric wafer and a spring piece that are closely fitted and consistent in shape. The piezoelectric wafer includes a circular wafer with a hole in the middle, and a set A plurality of bar-shaped wafers in the circumferential direction of the circular wafer; the spring leaf includes a circular reed with a hole in the middle and a plurality of strip-shaped reeds arranged in the circumferential direction of the circular reed. The present invention fully combines the advantages of the circular piezoelectric sheet and the single cantilever piezoelectric sheet to form a novel piezoelectric chip with multiple cantilever beams. This structure not only retains the advantages of the single cantilever beam for easy mathematical modeling, rigidity and easy control, but also The electromechanical conversion sensitivity of the single cantilever piezoelectric chip is improved.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric energy conversion, and in particular relates to a piezoelectric chip. Background technique [0002] Piezoelectric chip belongs to the application field of piezoelectric technology. Its main function is to convert mechanical energy into electrical energy. When the same material and material properties are determined, under the action of a force F, its conversion ability is the same as the deformation of the piezoelectric sheet △ h is proportional to the area S of the piezoelectric sheet. [0003] At present, piezoelectric wafers are widely used, and their main forms are circular structures and single cantilever beam structures. Such as figure 1 As shown, the advantages of the circular piezoelectric sheet are large effective area, simple structure, and small volume when used as a structural part. However, due to its circular structure, it is difficult to analyze its performance by mathematic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H11/08
CPCG01H11/08
Inventor 庞海军
Owner 西安陆海地球物理科技有限公司