CN113325190A

CN113325190A - Acceleration sensor with low-noise charge amplifier

Info

Publication number: CN113325190A
Application number: CN202110563148.6A
Authority: CN
Inventors: 康绳祖; 杨慧茹
Original assignee: Suzhou Huichenxu Intelligent Technology Co ltd
Current assignee: Suzhou Huichenxu Intelligent Technology Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-08-31

Abstract

The invention discloses an acceleration sensor with a low-noise charge amplifier, which comprises a sensor main body cover, a bracket and the charge amplifier, wherein plugs are embedded and installed on two sides of the top of the sensor main body cover, the sensor main body cover is embedded and installed on machine body equipment through the plugs, a supporting base is installed at the bottom of the sensor main body cover, a cable connector is embedded and installed on one side of the supporting base, and the charge amplifier is installed in the middle of the cable connector in an embedding manner; the bottom welding of bracket has the stabilizer plate, the top middle part of bracket is provided with the mounting groove, and supports the base and inlay and install in the mounting groove. Plugs are arranged on two sides of the top end of the sensor main body cover, and can be hoisted and fixed through the plugs, the bottom of the supporting base is embedded and installed on the supporting seat, the bottom of the supporting seat is welded with the stabilizing bottom plate, and the corner of the stabilizing bottom plate is provided with the installation hole through which a bolt can be installed on a machine body.

Description

Acceleration sensor with low-noise charge amplifier

Technical Field

The invention relates to the field of acceleration sensors, in particular to an acceleration sensor with a low-noise charge amplifier.

Background

The acceleration sensor is used for detecting acceleration, and the acceleration sensor is a sensor capable of measuring acceleration, and generally comprises a mass block, a damper, an elastic element, a sensitive element, an adaptive circuit and the like. In the acceleration process, the sensor obtains an acceleration value by measuring the inertial force borne by the mass block and utilizing Newton's second law. Common acceleration sensors include capacitive, inductive, strain, piezoresistive, piezoelectric, etc. depending on the sensor sensing element.

The acceleration sensor at the present stage has many disadvantages, for example, the acceleration sensor and the device needing to measure the acceleration are installed and fixed in a single mode, the detection process is easy to cause weak signals, the detection effect is affected, the outer side of the acceleration sensor cannot be protected, and the safety is not enough.

Disclosure of Invention

The invention aims to provide an acceleration sensor with a low-noise charge amplifier, which aims to solve the problems that the acceleration sensor and a device needing acceleration measurement in the background technology are single in installation and fixing mode, signals are weak easily in the detection process, the detection effect is influenced, the outer side of the acceleration sensor cannot be protected, and the safety is not enough.

In order to achieve the purpose, the invention provides the following technical scheme: an acceleration sensor with a low-noise charge amplifier comprises a sensor main body cover, a bracket and the charge amplifier, wherein plugs are embedded and installed on two sides of the top of the sensor main body cover, the sensor main body cover is embedded and installed on machine body equipment through the plugs, a supporting base is installed at the bottom of the sensor main body cover, a cable connector is embedded and installed on one side of the supporting base, and the charge amplifier is installed in the middle of the cable connector in an embedding mode; the welding of the bottom of bracket has stabilizer plate, the top middle part of bracket is provided with the mounting groove, and supports the base and inlay and install in the mounting groove, the rail guard is inlayed and installed to the top both sides of bracket, and the welding has the protective rod between the rail guard.

In a further embodiment, the middle parts of two sides of the top of the bracket are provided with fixing lugs of an integrated structure, and the fixing lugs are fixedly connected with two sides of the supporting base through bolts.

In a further embodiment, the middle part of mounting groove is provided with first jack, the top both sides of bracket are provided with the second jack, the inserted bar is all installed to the bottom middle part and both sides of support base, and fixed connection is all inlayed with first jack and second jack to the inserted bar.

In a further embodiment, the bottom end of the sensor body cover is welded with a mosaic head, and the sensor body cover is mounted on the top of the support base through the mosaic head in a mosaic mode.

In a further embodiment, a piezoelectric element is installed inside the sensor body cover, a mass block is installed on the top of the piezoelectric element, a pre-pressing spring is installed on the top of the mass block, and the pre-pressing spring, the mass block and the piezoelectric element are fixedly connected through a long bolt.

In a further embodiment, mounting holes are formed in corners of the stabilizing bottom plate, and the stabilizing bottom plate is fixed on the machine body needing acceleration measurement through mounting holes and bolts.

Compared with the prior art, the invention has the beneficial effects that:

1. plugs are arranged on two sides of the top end of the sensor main body cover, and can be hoisted and fixed through the plugs, the bottom of the supporting base is embedded and installed on the supporting seat, the bottom of the supporting seat is welded with the stabilizing bottom plate, and the corner of the stabilizing bottom plate is provided with the installation hole through which a bolt can be installed on a machine body.

2. Guard rails are embedded on two sides of the top of the bracket, a guard rod is arranged between the guard rails, the guard rails are arranged around the sensor main body cover, so that the sensor main body cover and the support base can be protected against explosion and impact, a cable joint is arranged on one side of the support base, and a charge amplifier is embedded on the cable joint and can amplify output charges, so that detected information is clearer and more stable in the conveying process.

Drawings

FIG. 1 is a schematic diagram of an acceleration sensor with a low noise charge amplifier according to the present invention;

FIG. 2 is a schematic view of the internal structure of the sensor body cover of the present invention;

FIG. 3 is a top view of the bracket of the present invention;

fig. 4 is a top view of the guard rail of the present invention.

In the figure: 1. a plug; 2. a gland; 3. a sensor body cover; 4. protecting the fence; 5. a support base; 6. a bracket; 7. stabilizing the bottom plate; 8. fixing the ear; 9. a charge amplifier; 10. a cable joint; 11. a mass block; 12. a piezoelectric element; 13. a damascene head; 14. pre-pressing a spring; 15. a long bolt; 16. mounting grooves; 17. a first jack; 18. a second jack; 19. a guard bar.

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.

Referring to fig. 1-4, an embodiment of the present invention is shown: an acceleration sensor with a low-noise charge amplifier comprises a sensor main body cover 3, a bracket 6 and a charge amplifier 9, wherein plugs 1 are embedded and installed on two sides of the top of the sensor main body cover 3, the sensor main body cover 3 is embedded and installed on machine body equipment through the plugs 1, a sensor main body can be embedded, hoisted and installed on a machine body through the plugs 1, a supporting base 5 is installed at the bottom of the sensor main body cover 3, the sensor main body cover 3 can be supported through the supporting base 5, a cable joint 10 is embedded and installed on one side of the supporting base 5, the cable joint 10 is used for installing a cable and transmitting detected information to a display module, the charge amplifier 9 is installed in the middle of the cable joint 10 in an embedding mode, and the charge amplifier 9 is composed of a charge conversion stage, an adaptive stage, a low-pass filter, a high-pass filter, a final-stage power amplifier, The power supply is composed of a plurality of parts and is used for increasing the output charges; the bottom welding of bracket 6 has stabilizer plate 7, be used for making bracket 6 carry out the stable support through stabilizer plate 7 and place, the top middle part of bracket 6 is provided with mounting groove 16, and supporting pedestal 5 inlays and installs in mounting groove 16, it is fixed to be used for inlaying the installation with supporting pedestal 5 through mounting groove 16, rail guard 4 is inlayed and installed to the top both sides of bracket 6, and the welding has protective bar 19 between the rail guard 4, be used for protecting the outside of sensor main part through protective bar 4 and the protective bar 19 between it.

Further, the top both sides middle part of bracket 6 is provided with the fixed ear 8 of a body structure, and fixed ear 8 and support base 5's both sides bolt fixed connection, and it is more firm to make bracket 6 and support base 5's connection fixed through fixed ear 8.

Further, the middle part of mounting groove 16 is provided with first jack 17, and the top both sides of bracket 6 are provided with second jack 18, and the inserted bar is all installed to the bottom middle part and the both sides of support base 5, and fixed connection is all inlayed with first jack 17 and second jack 18 to the inserted bar, conveniently inlays fixed connection with support base 5 and bracket 6 through first jack 17 and second jack 18.

Further, the bottom welding of sensor main part cover 3 has mosaic head 13, and sensor main part cover 3 inlays through mosaic head 13 and installs at the top of support base 5, makes sensor main part cover 3 inlay through mosaic head 13 and is connected fixedly with support base 5.

Further, a piezoelectric element 12 is installed inside the sensor body cover 3, a mass block 11 is installed on the top of the piezoelectric element 12, a pre-pressing spring 14 is installed on the top of the mass block 11, the pre-pressing spring 14, the mass block 11 and the piezoelectric element 12 are fixedly connected through a long bolt 15, the mass block 11 is controlled to apply pressure to the piezoelectric element 12 through the inertia effect, pressure information is transmitted to the cable connector 10 through the piezoelectric element 12, the cable connector 10 amplifies the charge through a charge amplifier 9 on the outer side of the cable connector, and the information is transmitted to the display module through a cable.

Further, the corner of stabilizer plate 7 is provided with the mounting hole, and stabilizer plate 7 passes through the mounting hole bolt fastening on the organism that needs survey the acceleration, and this kind of design improves the mounting means of sensor main part.

The working principle is as follows: when in use, the sensor main body cover 3 is connected and fixed with the top of the supporting base 5 through the mosaic head 13 at the bottom end of the sensor main body cover, so that the sensor main body cover 3 and the supporting base 5 are spliced and fixed with each other, the sensor body is hoisted and fixed on a machine body needing acceleration measurement through the plugs 1 at the two sides of the top of the sensor body cover 3, the supporting base 5 is installed on the installation groove 16 at the middle part of the bracket 6 in an embedding way, the bracket 6 is connected and fixed with the supporting base 5 through the fixing lugs 8, the outside of the sensor body cover 3 and the support base 5 is protected by the guard rail 4 and the guard bar 19 therebetween, can be protected from explosion and impact, the safety of the cable connector is improved, the cable connector 10 is connected with a cable, and the charge amplifier 9 is used for amplifying the detected output charges, so that the detected information is clearer.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An acceleration sensor with a low noise charge amplifier, comprising a sensor body cover (3), a bracket (6) and a charge amplifier (9), characterized in that: plugs (1) are mounted on two sides of the top of the sensor main body cover (3) in an embedded mode, the sensor main body cover (3) is mounted on machine body equipment in an embedded mode through the plugs (1), a supporting base (5) is mounted at the bottom of the sensor main body cover (3), a cable connector (10) is mounted on one side of the supporting base (5) in an embedded mode, and the charge amplifier (9) is mounted in the middle of the cable connector (10) in an embedded mode; the welding of the bottom of bracket (6) has stabilizer plate (7), the top middle part of bracket (6) is provided with mounting groove (16), and supporting pedestal (5) inlay and install in mounting groove (16), rail guard (4) are installed to the top both sides of bracket (6) are inlayed, and have protection rod (19) between rail guard (4).

2. An acceleration sensor with a low noise charge amplifier according to claim 1, characterized in that: the middle parts of two sides of the top of the bracket (6) are provided with fixing lugs (8) of an integrated structure, and the fixing lugs (8) are fixedly connected with bolts at two sides of the supporting base (5).

3. An acceleration sensor with a low noise charge amplifier according to claim 1, characterized in that: the middle part of mounting groove (16) is provided with first jack (17), the top both sides of bracket (6) are provided with second jack (18), the inserted bar is all installed to the bottom middle part and the both sides of support base (5), and fixed connection is all inlayed with first jack (17) and second jack (18) to the inserted bar.

4. An acceleration sensor with a low noise charge amplifier according to claim 1, characterized in that: the bottom welding of sensor main part cover (3) has mosaic head (13), and sensor main part cover (3) inlay through mosaic head (13) and install the top at support base (5).

5. An acceleration sensor with a low noise charge amplifier according to claim 1, characterized in that: the sensor is characterized in that a piezoelectric element (12) is arranged inside the sensor body cover (3), a mass block (11) is arranged at the top of the piezoelectric element (12), a pre-pressing spring (14) is arranged at the top of the mass block (11), and the pre-pressing spring (14), the mass block (11) and the piezoelectric element (12) are fixedly connected through a long bolt (15).

6. An acceleration sensor with a low noise charge amplifier according to claim 1, characterized in that: the corner of the stabilizing bottom plate (7) is provided with a mounting hole, and the stabilizing bottom plate (7) is fixed on a machine body needing acceleration measurement through a mounting hole bolt.