CN113985066B - High-impact acceleration sensor and manufacturing method thereof - Google Patents
High-impact acceleration sensor and manufacturing method thereof Download PDFInfo
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- CN113985066B CN113985066B CN202111624687.2A CN202111624687A CN113985066B CN 113985066 B CN113985066 B CN 113985066B CN 202111624687 A CN202111624687 A CN 202111624687A CN 113985066 B CN113985066 B CN 113985066B
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- 230000001133 acceleration Effects 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 49
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005538 encapsulation Methods 0.000 claims description 6
- 238000004382 potting Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000011257 shell material Substances 0.000 abstract description 42
- 238000001914 filtration Methods 0.000 abstract description 11
- 230000005684 electric field Effects 0.000 abstract description 4
- 230000005291 magnetic effect Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
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Abstract
The invention provides a high-impact acceleration sensor and a manufacturing method thereof, relating to the technical field of acceleration sensors and comprising the following steps: the core body is connected with the cable shell; a first built-in groove is formed in the core body, and the top of the first built-in groove is connected with a second built-in groove; the side wall of the first built-in groove is sleeved with a fixed sleeve; the piezoelectric material is arranged inside the fixed sleeve; fixing the fixed sleeve and the piezoelectric material inside the first built-in groove by pouring a filter material; a binding post is fixedly arranged in the cable shell; the first end of the binding post extends into the core body and penetrates through the second built-in groove to be electrically connected with the piezoelectric material; and the second end of the binding post is connected with an output cable. The core body and the cable shell are respectively made of titanium alloy materials. And a filtering material is poured into the core body, so that internal mechanical filtering is increased, and the problem of high impact zero drift is solved. The core and the cable shell made of the titanium alloy shell material have the advantages of good rigidity, light weight, resonant frequency improvement and electric field and magnetic field interference resistance.
Description
Technical Field
The invention relates to the technical field of acceleration sensors, in particular to a high-impact acceleration sensor with a mechanical filter and ground insulation and a manufacturing method thereof.
Background
The existing high impact (the finger range is 5 kg and above) piezoelectric acceleration transducer mainly has two types of insulation type and non-insulation type, and the signal output form is divided into two types of charge and voltage.
Because the sensitivity of the high impact acceleration sensor is extremely low, the signal of the high impact acceleration sensor is extremely easy to be interfered by the outside, particularly the electric field and the magnetic field of the installation surface, and the superposition frequency is extremely easy to excite the resonance frequency of the sensor, thereby causing the signal of the sensor to have the phenomenon of zero drift, and causing the false triggering or invalid acquisition of the signal acquisition.
Disclosure of Invention
The invention provides a high-impact acceleration sensor which can resist the interference of an electric field and a magnetic field and solve the problem of high-impact zero drift;
the high impact type acceleration sensor includes: the core body is connected with the cable shell;
a first built-in groove is formed in the core body, and the top of the first built-in groove is connected with a second built-in groove; the side wall of the first built-in groove is sleeved with a fixed sleeve; the piezoelectric material is arranged inside the fixed sleeve;
fixing the fixed sleeve and the piezoelectric material inside the first built-in groove by pouring a filter material;
a binding post is fixedly arranged in the cable shell; the first end of the binding post extends into the core body, penetrates through the second built-in groove, extends into the first built-in groove and is electrically connected with the piezoelectric material;
and the second end of the binding post is connected with an output cable.
The core body and the cable shell are respectively made of titanium alloy materials.
It is further noted that the binding post is fixed inside the cable shell by pouring potting protective glue into the cable shell;
the connecting point of the binding post and the output cable is arranged inside the encapsulation protective glue.
One end of the cable shell connected with the core body is provided with a through hole;
a sintering sealing head is arranged in the through hole;
the first end of the binding post passes through the sintering sealing head and extends to the inside of the core body.
It should be further noted that a protective sleeve is sleeved on the outer side wall of the first built-in groove.
The bottom of the second built-in groove is connected with the top of the first built-in groove, a built-in circuit is arranged at the bottom of the second built-in groove, and the built-in circuit is electrically connected with the piezoelectric material.
It should be further noted that the cable case cover is provided with a cover plate;
the cover plate is covered on the encapsulation protective glue.
It is further noted that the core and the cable sheath are each formed in a hexagonal configuration.
The invention also provides a manufacturing method of the high-impact acceleration sensor, which comprises the following steps:
welding positive and negative leads on the piezoelectric material;
placing a piezoelectric material and a fixing sleeve inside a first built-in groove;
the filter material is poured into the first built-in groove and between the piezoelectric material and the fixed sleeve by the pouring mechanical filter, so that the piezoelectric material and the fixed sleeve are fixed together and are fixed in the first built-in groove;
penetrating the second end of the binding post into the cable shell through the through hole and connecting the second end of the binding post with an output cable in a welding mode;
butting the core body with the cable shell, enabling the first end of the binding post to extend into the core body, penetrate through the second built-in groove, extend into the first built-in groove and be electrically connected with the piezoelectric material;
connecting the core body with the cable shell in a welding mode;
pouring a potting protective adhesive into the cable shell to fix the wiring terminal and the output cable;
covering the cover plate on the cable shell and welding the cover plate with the cable shell;
and connecting the cable joint with the output cable.
According to the technical scheme, the invention has the following advantages:
according to the high-impact acceleration sensor, the filter material is poured into the core body, so that internal mechanical filtering is added, and the problem of high-impact zero drift is solved. The core and the cable shell made of the titanium alloy shell material have the advantages of good rigidity, light weight, resonant frequency improvement and electric field and magnetic field interference resistance.
The invention also provides an IEPE voltage type impact sensor, which increases the electronic filtering function and has better using effect when being matched with a mechanical filter.
The high-impact acceleration sensor is integrally made of titanium alloy materials, and has the advantages of light overall weight and better frequency response. The core and the cable shell are hexagonal, so that the cable shell is convenient to install and use, the core is of an annular shearing structure, and a high polymer material is configured to serve as a filtering material, so that the cable shell has a certain anti-interference effect.
The high-impact acceleration sensor manufactured by the manufacturing method provided by the invention realizes simple and reliable ground insulation, enhances the mechanical property and improves the performance of the sensor. Electronic filtering is further added to the IEPE voltage type acceleration sensor.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a high-impact acceleration sensor;
FIG. 2 is a schematic diagram of a voltage mode sensor.
Description of reference numerals:
1-core body, 2-piezoelectric material, 3-filter material, 4-fixing sleeve, 5-binding post, 6-sintering sealing head, 7-protective sleeve, 8-cable shell, 9-encapsulating protective glue, 10-cover plate, 11-output cable, 13-first built-in groove and 14-second built-in groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the high impact type acceleration sensor provided by the present invention, when an element or layer is referred to as being "on" or "connected" or "coupled" to another element or layer, it may be directly on, connected or coupled to the other element or layer, or intervening elements or layers may also be present. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. Like numbers refer to like elements throughout. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The high-impact type acceleration sensor provided by the present invention may use spatially relative terms such as "under …", "below", "lower", "above", and the like for ease of description to describe one element or feature's relationship to another element or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
The terminology used in the high-impact type acceleration sensor is for the purpose of describing particular embodiments only and is not intended to be limiting of the description in this document. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
As shown in fig. 1, the high impact type acceleration sensor includes: the cable comprises a core body 1, wherein the core body 1 is connected with a cable shell 8;
a first built-in groove 13 is arranged in the core body 1, and the top of the first built-in groove 13 is connected with a second built-in groove 14; the side wall of the first built-in groove 13 is sleeved with a fixed sleeve 4; the piezoelectric material 2 is arranged in the fixed sleeve 4; fixing the fixing sleeve 4 and the piezoelectric material 2 inside the first built-in groove 13 by pouring the filter material 3; a binding post 5 is fixedly arranged in the cable shell 8; the first end of the binding post 5 extends into the core body 1, penetrates through the second built-in groove 14, extends into the first built-in groove 13, and is electrically connected with the piezoelectric material 2 through a lead; the second end of the terminal 5 is connected with an output cable 11. The binding post is electrically connected with the piezoelectric material through a lead.
The core body 1 and the cable shell 8 are made of titanium alloy materials respectively. The core body 1 and the cable shell 8 made of the titanium alloy shell material have the advantages of good rigidity, light weight and easiness in improving the resonant frequency.
The core body 1 can be a ring-shaped structure shearing core body, and has small output and good rigidity. The filter material 3 is poured into the core body 1, so that the mechanical filtering effect is realized, and the size of the sensor can be reduced. The structure of the high-impact acceleration sensor is more reliable and easy to maintain.
In the invention, the wiring terminal 5 is fixed inside the cable shell 8 by pouring the potting protective glue 9 into the cable shell 8; the connection point of the binding post 5 and the output cable 11 is arranged inside the encapsulation protective glue 9. The cable shell 8 is covered with a cover plate 10; the cover plate 10 covers the potting protection glue 9. The cable shell 8 and the cover plate 10 are connected in a welding mode.
The output cable 11 is connected with the cable connector and can transmit the sensing data of the sensor to the terminal.
In order to ensure the sealing performance of the core body 1 and reduce external interference, a through hole is formed at one end of the cable shell 8 connected with the core body 1; a sintering sealing head 6 is arranged in the through hole; the first end of the terminal post 5 extends through the sintered sealing head 6 to the inside of the core body 1.
As shown in fig. 2, the diameter of the first built-in groove 13 in the present invention is smaller than that of the second built-in groove 14. The bottom of the second built-in groove 14 is connected with the top of the first built-in groove 13, and the bottom of the second built-in groove 14 is provided with a built-in circuit which is electrically connected with the piezoelectric material 2. Thus, the high-impact type acceleration sensor is a voltage type sensor.
In order to protect the high impact type acceleration sensor, the protective sleeve 7 is sleeved on the outer side wall of the first built-in groove 13, and the protective sleeve 7 plays a role in protecting the high impact type acceleration sensor. The protective sleeve can be made of rubber materials.
The high-impact acceleration sensor based on the invention adopts a brand-new core body structure, increases internal mechanical filtering and solves the problem of high-impact zero drift. The high-impact acceleration sensor solves the problems of large external insulation size and heavy weight caused by the increase of a common structure. The invention also provides an IEPE voltage type impact sensor, which increases the electronic filtering function and has better using effect when being matched with a mechanical filter.
The high-impact acceleration sensor is integrally made of titanium alloy materials, and has the advantages of light overall weight and better frequency response. The core body 1 and the cable shell 8 are hexagonal, so that the cable shell is convenient to install and use, the core body is of an annular shearing structure, and a high polymer material is configured to serve as a filtering material, so that the cable shell has a certain anti-interference effect.
Based on the high-impact acceleration sensor, the invention also provides a manufacturing method of the high-impact acceleration sensor, which comprises the following steps:
welding positive and negative leads on the piezoelectric material 2;
placing the piezoelectric material 2 and the fixing sleeve 4 inside the first built-in groove 13;
the filter material 3 is poured into the first built-in groove 13 and between the piezoelectric material 2 and the fixed sleeve 4 by the pouring mechanical filter, so that the piezoelectric material 2 and the fixed sleeve 4 are fixed together and are fixed inside the first built-in groove 13;
the second end of the binding post 5 penetrates into the cable shell 8 through the through hole and is connected with the output cable 11 in a welding mode;
butting the core body 1 with the cable shell 8, and enabling a first end of the binding post 5 to extend into the core body 1, penetrate through the second built-in groove 14, extend into the first built-in groove 13 and be electrically connected with the piezoelectric material 2;
the core body 1 is connected with the cable shell 8 in a welding mode;
pouring a potting protective adhesive 9 into the cable shell 8 to fix the terminal post 5 and the output cable 11;
covering the cable shell 8 with a cover plate 10, and welding the cover plate with the cable shell 8;
the cable joint is connected to the output cable 11.
The high-impact acceleration sensor manufactured by the manufacturing method provided by the invention has a simpler structure, a central column with higher processing difficulty and a memory metal ring with extremely high material cost are omitted, and a mechanical filter device is added, so that the high-impact acceleration sensor is simpler in structure, more reliable, stronger in function and lower in material cost. The high-impact acceleration sensor realizes simple and reliable ground insulation, enhances the mechanical property and improves the performance of the sensor. Electronic filtering is further added to the IEPE voltage type acceleration sensor.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A manufacturing method of a high-impact acceleration sensor is characterized in that the manufacturing method is used for manufacturing the high-impact acceleration sensor;
the high impact type acceleration sensor includes: the cable comprises a core body (1), wherein the core body (1) is connected with a cable shell (8);
a first built-in groove (13) is arranged in the core body (1), and the top of the first built-in groove (13) is connected with a second built-in groove (14); the side wall of the first built-in groove (13) is sleeved with a fixed sleeve (4); the piezoelectric material (2) is arranged in the fixed sleeve (4);
fixing the fixing sleeve (4) and the piezoelectric material (2) inside the first built-in groove (13) by pouring a filter material (3);
a binding post (5) is fixedly arranged in the cable shell (8); the first end of the binding post (5) extends into the core body (1), penetrates through the second built-in groove (14), extends into the first built-in groove (13), and is electrically connected with the piezoelectric material (2);
the second end of the binding post (5) is connected with an output cable (11);
the core body (1) and the cable shell (8) are respectively made of titanium alloy materials;
the wiring terminal (5) is fixed inside the cable shell (8) by pouring potting protective glue (9) into the cable shell (8);
the connection point of the binding post (5) and the output cable (11) is arranged inside the encapsulation protective glue (9);
a through hole is formed at one end of the cable shell (8) connected with the core body (1);
a sintering sealing head (6) is arranged in the through hole;
the first end of the binding post (5) passes through the sintering sealing head (6) and extends into the core body (1);
the outer side wall of the first built-in groove (13) is sleeved with a protective sleeve (7);
the bottom of the second built-in groove (14) is connected with the top of the first built-in groove (13), a built-in circuit is arranged at the bottom of the second built-in groove (14), and the built-in circuit is electrically connected with the piezoelectric material (2);
the cable shell (8) is covered with a cover plate (10);
the cover plate (10) is covered on the encapsulation protective glue (9);
the binding post (5) is electrically connected with the piezoelectric material (2) through a lead;
the core body (1) and the cable shell (8) respectively adopt a hexagonal structure;
the method comprises the following steps:
welding positive and negative leads on the piezoelectric material (2);
the piezoelectric material (2) and the fixing sleeve (4) are placed inside the first built-in groove (13);
the filter material (3) is poured into the first built-in groove (13) and between the piezoelectric material (2) and the fixing sleeve (4) by the pouring mechanical filter, so that the piezoelectric material (2) and the fixing sleeve (4) are fixed together and fixed into the first built-in groove (13);
the second end of the binding post (5) penetrates into the cable shell (8) through the through hole and is connected with the output cable (11) in a welding mode;
butting the core body (1) with the cable shell (8), extending the first end of the binding post (5) into the core body (1), penetrating through the second built-in groove (14), extending into the first built-in groove (13), and electrically connecting with the piezoelectric material (2);
the core body (1) is connected with the cable shell (8) in a welding mode;
pouring encapsulation protective glue (9) into the cable shell (8) to fix the terminal post (5) and the output cable (11);
covering the cover plate (10) on the cable shell (8) and welding the cover plate with the cable shell (8);
the cable joint is connected with an output cable (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111624687.2A CN113985066B (en) | 2021-12-29 | 2021-12-29 | High-impact acceleration sensor and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111624687.2A CN113985066B (en) | 2021-12-29 | 2021-12-29 | High-impact acceleration sensor and manufacturing method thereof |
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| CN113985066A CN113985066A (en) | 2022-01-28 |
| CN113985066B true CN113985066B (en) | 2022-05-13 |
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|---|---|---|---|---|
| US6198207B1 (en) * | 1998-09-01 | 2001-03-06 | Oceana Sensor Technologies | High-volume production, low cost piezoelectric transducer using low-shrink solder of bismuth or antimony alloy |
| CN2556648Y (en) * | 2002-05-17 | 2003-06-18 | 北京理工大学 | Piezoelectric film acceleration sensor for high impact overload detecting and controlling |
| CN102901557A (en) * | 2011-07-30 | 2013-01-30 | 重庆工商大学 | Isolation shear type piezoelectric acceleration transducer with internal integrated circuit |
| CN203164200U (en) * | 2013-04-16 | 2013-08-28 | 厦门乃尔电子有限公司 | Piezoelectric acceleration sensor |
| CN103792389A (en) * | 2014-02-18 | 2014-05-14 | 扬州英迈克测控技术有限公司 | High-impact piezoelectric accelerometer |
| CN108445257A (en) * | 2018-04-13 | 2018-08-24 | 北京强度环境研究所 | A kind of piezoelectric type high G-value shock transducer core |
| CN111999525A (en) * | 2020-09-18 | 2020-11-27 | 江苏东华测试技术股份有限公司 | Piezoelectric acceleration sensor capable of detecting working state in real time and detection method |
| CN112326016A (en) * | 2020-11-26 | 2021-02-05 | 江苏江凌测控科技股份有限公司 | Annular shearing type sensor for monitoring train wheel set state |
-
2021
- 2021-12-29 CN CN202111624687.2A patent/CN113985066B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198207B1 (en) * | 1998-09-01 | 2001-03-06 | Oceana Sensor Technologies | High-volume production, low cost piezoelectric transducer using low-shrink solder of bismuth or antimony alloy |
| CN2556648Y (en) * | 2002-05-17 | 2003-06-18 | 北京理工大学 | Piezoelectric film acceleration sensor for high impact overload detecting and controlling |
| CN102901557A (en) * | 2011-07-30 | 2013-01-30 | 重庆工商大学 | Isolation shear type piezoelectric acceleration transducer with internal integrated circuit |
| CN203164200U (en) * | 2013-04-16 | 2013-08-28 | 厦门乃尔电子有限公司 | Piezoelectric acceleration sensor |
| CN103792389A (en) * | 2014-02-18 | 2014-05-14 | 扬州英迈克测控技术有限公司 | High-impact piezoelectric accelerometer |
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