CN208860868U - Move axially the linear acceleration measuring device of object - Google Patents
Move axially the linear acceleration measuring device of object Download PDFInfo
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- CN208860868U CN208860868U CN201821105595.7U CN201821105595U CN208860868U CN 208860868 U CN208860868 U CN 208860868U CN 201821105595 U CN201821105595 U CN 201821105595U CN 208860868 U CN208860868 U CN 208860868U
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- pedestal
- electric pole
- lower electrode
- electrode plate
- pole plate
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Abstract
A kind of linear acceleration measuring device moving axially object, the device is equipped with pedestal, lower part is equipped with flexible pendulum in pedestal, the upper and lower surface of the flexibility pendulum all has positive charge, electric pole plate and lower electrode plate are respectively equipped in the two sides up and down of the flexible pendulum, it is respectively provided with just on the electric pole plate and lower electrode plate, negative electrical charge, upper end cover is sealedly connected at the top of the pedestal, the lower end of pedestal is sealedly connected with sealing seat, electric signal input end and output terminal are connected separately on the electric pole plate and lower electrode plate, the circuit board with control circuit is equipped in pedestal internal upper part, the flexibility pendulum, electric pole plate and lower electrode plate respectively with the circuit board electrical connection, the base bottom is equipped with to the vacuum orifice vacuumized in pedestal.The features such as the utility model has structure simple, is quick on the draw, and can measure small acceleration, and measurement accuracy is high, small in size.
Description
[technical field]
The utility model relates to the acceleration analyses of object, survey more particularly to a kind of linear acceleration for moving axially object
Measure device.
[background technique]
It is known that linear acceleration is to describe physical quantity of the size and Orientation to time rate of change of rigid body linear velocity.Line
Acceleration is usually measured by acceleration transducer, be can measure the acceleration of moving object campaign and is exported acceleration signal
Device.It includes strain chip, differential transformer type and piezoelectric type etc..Wherein, the elasticity of chip acceleration transducer is strained
Element is beam type, has a mass block in the end of beam, when object is with acceleration operation, work of the elastic element by inertia force
With and generate flexible deformation, and deform it is directly proportional to acceleration, the strain for measuring cantilever beam can measure the size of acceleration.Difference
Dynamic transformer type acceleration transducer be by shell, coil etc. and spring plate group at component be fixed on measured piece, when tested
When part is with acceleration movement, the inertia force of iron core acts on spring leaf and generates displacement deformation, then differential transformer has output,
It is that acceleration is directly proportional that it, which is exported to iron core displacement,.Piezoelectric acceleration transducer then be using piezo-electric crystal piezoelectric effect into
Row measurement.Existing acceleration transducer respectively has its scope of application and an object, and all can due to measuring condition difference and influence
Its measuring speed and precision, especially for measuring small acceleration, and the occasion that measurement accuracy is more demanding, existing acceleration
Sensor just has apparent limitation.For especially existing acceleration transducer due to using magnetic device, performance can be with
Time and die down, cause its performance unstable.
[summary of the invention]
The purpose of the utility model is to solve the above problems and to provide a kind of structure is simple, it is quick on the draw, can measure small acceleration
Degree, and measurement accuracy is high, the linear acceleration measuring device of axial movement object small in size.
To achieve the above object, the utility model provides a kind of linear acceleration measuring device for moving axially object, the dress
Pedestal is installed, lower part is equipped with flexible pendulum in pedestal, and the upper and lower surface of the flexibility pendulum all has positive charge, in the flexibility
The two sides up and down of pendulum are respectively equipped with electric pole plate and lower electrode plate, are respectively provided on the electric pole plate and lower electrode plate positive and negative
Charge, is sealedly connected with upper end cover at the top of the pedestal, and the lower end of pedestal is sealedly connected with sealing seat, the electric pole plate and
It is connected separately with electric signal input end and output terminal on lower electrode plate, is equipped with the circuit with control circuit in pedestal internal upper part
Plate, the flexibility pendulum, electric pole plate and lower electrode plate are respectively with the circuit board electrical connection, and the base bottom is equipped with to base
The vacuum orifice vacuumized in seat.
The pedestal is tubular body, is made of metal material, and pedestal outer surface is equipped with the convex edge of fixed testee,
The convex edge is equipped with multiple connecting holes, and base bottom is equipped with the ring-shaped step of fixed lower electrode plate, and base bottom is equipped with to downward
The boss stretched.
The flexibility pendulum is made of microcrystal glass material, and surface is coated with metal conductive film.
The electric pole plate and lower electrode plate are made of microcrystal glass material, and surface is coated with metal conductive film.
The upper end cover is the goblet that Open Side Down made of metal material, top convex edge with outward extension,
The convex edge of upper end cover and the upper surface of the pedestal are welded and fixed to merging.
It is fixed that electric pole plate, flexible pendulum and lower electrode plate are compressed by the inner pressure ring and outer press ring that are mounted in electric pole plate top
Position, wherein the lower end of the inner pressure ring is equipped with convex edge, and outer press ring is housed at the convex edge, and the inner pressure ring is pressed on described
On electrode plate, outer press ring is pressed on the convex edge of inner pressure ring, and the upper end of outer press ring is in contact with the lower end of the upper end cover.
Circuit board is fixed on the inner pressure ring top, and control circuit thereon is servo amplifier, the servo amplifier point
It is not electrically connected with the electric pole plate, flexible pendulum and lower electrode plate, output signal is exported through electrical signal
To external equipment.
The vacuum orifice of the pedestal is sealed by sealing seat, which is threadedly coupled with the boss of pedestal, with pedestal
Vacuum orifice between be filled with sealant.
The connecting hole on convex edge that the measuring device passes through the pedestal is connected with testee, to measure axial movement
The linear acceleration of object.
The contribution of the utility model is, effectively overcomes the limitation of the prior art.The utility model passes through by scratching
Property the core devices that constitute of pendulum and electric pole plate and lower electrode plate formed by electric field driven and the flexibility under vacuum condition
Acceleration analysis mode is not only easy to control, and is quick on the draw, and can be used for measuring small acceleration, and measurement accuracy is high.This
The features such as utility model also has structure simple, small in size.
[Detailed description of the invention]
Fig. 1 is the overall structure cross-sectional view of the utility model.
Fig. 2 is the circuit diagram of the utility model.
[specific embodiment]
The following example is being explained further and illustrate to the utility model, does not constitute any limit to the utility model
System.
Refering to fig. 1, the linear acceleration measuring device of the axial movement object of the utility model includes pedestal 10, flexible pendulum
Piece 20, electric pole plate 30, lower electrode plate 40, upper end cover 50, sealing seat 60, input terminal 71, output terminal 72 and circuit board 80.
As shown in Figure 1, the pedestal 10 is tubular body, it is made of metal material, in the present embodiment, the pedestal 10 is by aluminium
Alloy material is made.It is equipped with the convex edge 12 of fixation measuring device in 10 outer surface of pedestal, which is equipped with multiple connections
Hole 121, pedestal 10 can be connected by the connecting hole 121 with external equipment.Bottom is equipped with ring-shaped step 13 in pedestal 10,
For fixed lower electrode plate 40.10 bottom of pedestal is equipped with to the vacuum orifice 11 vacuumized in pedestal, in the present embodiment,
Air exhaust nozzle is housed at the vacuum orifice 11, the measuring appliance in it can be made to vacuumizing inside pedestal 10 by the vacuum orifice 11
Part works under vacuum conditions.It is sealedly connected with upper end cover 50 at the top of the pedestal 10, which is aluminium alloy material
The goblet that Open Side Down made of material, upper end cover top convex edge 51 with outward extension, the outer diameter and pedestal of the convex edge 51
10 outer diameters are identical, and the convex edge 51 of upper end cover and the upper surface of the pedestal 10 are welded and fixed to merging.10 bottom of pedestal be equipped with to
The boss 14 of lower extension, which is the tubular body of lower ending opening, and it has external screw thread, for connecting sealing seat 60, base
The lower end of seat 10 is sealedly connected with sealing seat 60, the tapped goblet made of aluminum alloy materials of sealing seat 60,
Center is provided with the aspirating hole placed for air exhaust nozzle, and sealant 61 is filled between the sealing seat 60 and air exhaust nozzle.
In Fig. 1, lower part is equipped with flexible pendulum 20 in pedestal 10, which is the core device of the measuring device
Part, it is the plates made of microcrystal glass material, and the outer surface of flexible pendulum 20 is coated with metal conductive film, so that above and below it
Surface all has positive charge.
In Fig. 1, it is respectively equipped with electric pole plate 30 and lower electrode plate 40 in the two sides up and down of the flexible pendulum 20, this is powered on
Pole plate 30 and lower electrode plate 40 are the plate bodys made of microcrystal glass material, and surface is coated with metal conductive film, so that on this
Positive and negative charge is respectively provided on electrode plate 30 and lower electrode plate 40.In the present embodiment, positive charge is had on electric pole plate 30,
Negative electrical charge is had on lower electrode plate 40.The positive and negative charge of 40 bands of the electric pole plate 30 and lower electrode plate will generate electricity after being powered
, so that flexible pendulum 20 is acted on by electric field force and generates micro-strain.In the present embodiment, lower 40 lower part of electrode plate is set
There is protrusion corresponding with the ring-shaped step 13 in pedestal 10, lower electrode plate 40 passes through its protrusion and the ring-shaped step in pedestal 10
13 pairs of merging positioning.Electric pole plate 30 and lower electrode plate 40 clamp flexible pendulum 20 wherein, and by electric pole plate 30
The inner pressure ring 91 and outer press ring 92 in portion compress positioning.The lower end of the inner pressure ring 91 is equipped with outside convex edge 911, in the convex edge
Outer press ring 92 is housed, the inner pressure ring 91 is pressed on the electric pole plate 30, for limiting the axial direction of electric pole plate 30 at 911
It is mobile.The outer press ring 92 is pressed on the convex edge 911 of inner pressure ring, the lower end phase of the upper end of outer press ring 92 and the upper end cover 50
Contact, upper end cover 50 limit electric pole plate 30, lower electrode plate 40 and flexible pendulum 20 through outer press ring 92, inner pressure ring 91.It is described
It is connected separately with electric signal input end 71 and output terminal 72 on electric pole plate 30 and lower electrode plate 40, is used for circuit board
Control circuit on 80 sends control signal or exports acceleration detection signal by control circuit.
In Fig. 1, the circuit board 80 with control circuit, in the present embodiment, the circuit board 80 are equipped in 10 internal upper part of pedestal
It is fixed on 91 top of inner pressure ring.The flexibility pendulum 20, electric pole plate 30 and lower electrode plate 40 respectively with the circuit board
80 electrical connections, and the circuit board 80 and the external equipment for issuing instruction, such as the wired or wireless connection of computer, Ipad, mobile phone.Institute
Circuit board 80 is stated equipped with control circuit, in the present embodiment, control circuit is servo amplifier, servo amplifier 80A difference
It is electrically connected with the electric pole plate 30, flexible pendulum 20 and lower electrode plate 40, output signal is through electrical signal
72 are output to external equipment.The flexibility pendulum 20 and generation between electric pole plate 30 and lower electrode plate 40 are proportional with rotation angle
Voltage change, and pass through servo amplifier carry out phase detection amplification.Electric pole plate 30 and lower electrode plate 40 generate instead at this time
Supply current, the polarity of the electric current are that pendulum is made to tend to zero-bit, the i.e. torque of the moment of flexure as caused by acceleration and electric field force generation
It balances each other.
The linear acceleration measuring device of the axial movement object of the utility model passes through the convex edge of the pedestal when in use
Connecting hole 121 on 12 is connected on testee, to measure the linear acceleration of axial movement object.
After the working principle of the utility model is as shown in Fig. 2, the measuring device is powered, electric pole plate 30 and lower electrode plate
40 generate electric field, and flexible pendulum 20 is in the electric field by the effect of electric field force.If acting on a certain acceleration in input axis direction,
Then flexible pendulum 20 generates small deformation, generates and rotates between flexible pendulum 20 and electric pole plate 30 and lower electrode plate 40
The proportional voltage change in angle, and phase detection amplification is carried out by servo amplifier.Electric pole plate 30 and lower electrode plate at this time
40 generate feedback current, and the polarity of the electric current makes pendulum tend to zero-bit, i.e., the moment of flexure as caused by acceleration and electric field force occur
Torque balance each other.The linear acceleration of axial movement object can be calculated accordingly.
Although being disclosed by above embodiments to the utility model, the scope of the utility model is not limited to
In this, under conditions of conceiving without departing from the utility model, above each component can be understood similar with technical field personnel
Or equivalent element is replaced.
Claims (9)
1. a kind of linear acceleration measuring device for moving axially object, which is characterized in that the device is equipped with pedestal (10), pedestal
(10) interior lower part is equipped with flexible pendulum (20), and the upper and lower surface of the flexibility pendulum (20) all has positive charge, in the flexible pendulum
The two sides up and down of piece (20) are respectively equipped with electric pole plate (30) and lower electrode plate (40), the electric pole plate (30) and lower electrode plate
(40) it is respectively provided with positive and negative charge on, is sealedly connected with upper end cover (50) at the top of the pedestal (10), the lower end of pedestal (10)
It is sealedly connected with sealing seat (60), electric signal input end is connected separately on the electric pole plate (30) and lower electrode plate (40)
(71) and output terminal (72) circuit board (80) with control circuit, the flexibility pendulum, are equipped in pedestal (10) internal upper part
(20), electric pole plate (30) and lower electrode plate (40) are electrically connected with the circuit board (80) respectively, and pedestal (10) bottom is set
Have to the vacuum orifice (11) vacuumized in pedestal.
2. the linear acceleration measuring device of axial movement object as described in claim 1, which is characterized in that the pedestal (10)
It for tubular body, is made of metal material, pedestal (10) outer surface is equipped with the convex edge (12) of fixed testee, the convex edge
(12) multiple connecting holes (121) are equipped with, pedestal (10) bottom is equipped with the ring-shaped step (13) of fixed lower electrode plate (40), pedestal
(10) bottom is equipped with the boss (14) extended downwardly.
3. the linear acceleration measuring device of axial movement object as described in claim 1, which is characterized in that the flexibility pendulum
(20) it is made of microcrystal glass material, surface is coated with metal conductive film.
4. the linear acceleration measuring device of axial movement object as described in claim 1, which is characterized in that the electric pole plate
(30) it is made with lower electrode plate (40) of microcrystal glass material, surface is coated with metal conductive film.
5. the linear acceleration measuring device of axial movement object as described in claim 1, which is characterized in that the upper end cover
(50) be the goblet that Open Side Down made of metal material, top convex edge (51) with outward extension, upper end cover it is convex
It is welded and fixed along (51) and the upper surface of the pedestal (10) to merging.
6. the linear acceleration measuring device of axial movement object as described in claim 1, which is characterized in that the electric pole plate
(30), flexible pendulum (20) and lower electrode plate (40) are by the inner pressure ring (91) and outer press ring (92) mounted in electric pole plate (30) top
Compress positioning, wherein the lower end of the inner pressure ring (91) is equipped with convex edge (911), and outer press ring is housed at the convex edge (911)
(92), the inner pressure ring (91) is pressed on the electric pole plate (30), and outer press ring (92) is pressed on the convex edge (911) of inner pressure ring
On, the upper end of outer press ring (92) is in contact with the lower end of the upper end cover (50).
7. the linear acceleration measuring device of axial movement object as claimed in claim 6, which is characterized in that the circuit board
(80) it is fixed on the inner pressure ring (91) top, control circuit thereon is servo amplifier, and the servo amplifier (80A) is respectively
It is electrically connected with the electric pole plate (30), flexible pendulum (20) and lower electrode plate (40), output signal is defeated through the electric signal
Terminal (72) is output to external equipment out.
8. the linear acceleration measuring device of axial movement object as described in claim 1, which is characterized in that the pedestal (10)
Vacuum orifice (11) by sealing seat (60) seal, which is threadedly coupled with the boss (14) of pedestal, with pedestal
Vacuum orifice (11) between be filled with sealant (61).
9. the linear acceleration measuring device of the axial movement object as described in any bar in claim 1 to 8, which is characterized in that
The connecting hole (121) on convex edge (12) that the measuring device passes through the pedestal is connected with testee, moves so that measurement is axial
The linear acceleration of animal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821105595.7U CN208860868U (en) | 2018-07-12 | 2018-07-12 | Move axially the linear acceleration measuring device of object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821105595.7U CN208860868U (en) | 2018-07-12 | 2018-07-12 | Move axially the linear acceleration measuring device of object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208860868U true CN208860868U (en) | 2019-05-14 |
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ID=66412496
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821105595.7U Active CN208860868U (en) | 2018-07-12 | 2018-07-12 | Move axially the linear acceleration measuring device of object |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693381A (en) * | 2018-07-12 | 2018-10-23 | 湖南科众兄弟科技有限公司 | Move axially the linear acceleration measuring device of object |
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2018
- 2018-07-12 CN CN201821105595.7U patent/CN208860868U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693381A (en) * | 2018-07-12 | 2018-10-23 | 湖南科众兄弟科技有限公司 | Move axially the linear acceleration measuring device of object |
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