CN107300384A - A kind of piezoelectric acceleration seeks ground sensor - Google Patents
A kind of piezoelectric acceleration seeks ground sensor Download PDFInfo
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- CN107300384A CN107300384A CN201610242756.6A CN201610242756A CN107300384A CN 107300384 A CN107300384 A CN 107300384A CN 201610242756 A CN201610242756 A CN 201610242756A CN 107300384 A CN107300384 A CN 107300384A
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- pedestal
- electric crystal
- inertial mass
- piezoelectric acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Gyroscopes (AREA)
Abstract
Ground sensor is sought the present invention relates to a kind of piezoelectric acceleration, it includes：Inertial mass, is fitted on the inertial mass, the piezo-electric crystal of lower surface, an insulation force-transmitting block on the outside of every piezo-electric crystal, and installs the pedestal of the inertial mass, piezo-electric crystal and force-transmitting block.There is the pre-loading screw for heading on force-transmitting block the upper and lower part of pedestal, piezo-electric crystal is connected by wire with the power amplifier module on pedestal, the output end of power amplifier module is connected with the filtration module on pedestal, and filtration module is again by electric signal output to the microcomputer chip on pedestal.The sensor utilizes piezo-electric effect and acceleration of gravity principle, simple in construction, and reliability is high, is realized available for big overload flight instruments and seeks ground purpose.
Description
Technical field
Ground sensor is sought the present invention relates to one kind, relates more specifically to the piezoelectricity of a kind of utilization piezo-electric effect and acceleration of gravity principle
Acceleration seeks ground sensor, belongs to piezoelectric transducer technical field.
Background technology
At present, relatively common ground sensor of seeking includes gyroscope and magnetic field sensor etc..
Gyroscope is the sensor of conventional determination flight body posture parameter, using the gyroscopic inertia and precession of gyro, can be measured
Posture and the instrument for seeking north；Because traditional gyroscope has rotatable parts, complete independence, and time is long, therefore deposits
In many deficiencies.Precision still compares high when short time works, but the accumulated error produced when working long hours in the presence of drift,
Initial error has nonlinearity erron, the alignment error of accelerometer, take off before gyro driftage, non-linear angular transducer causes
Error etc..And exist it is complicated, involve great expense, assembling and setting cycle long problem because its component is containing valuable
The accurate electromechanical instrument of metal, it is under the working condition used it needs to be determined that time and with special energy source gunpowder, accumulation of energy
Device etc..Its application is restricted under the conditions of high overload.
Magnetic field sensor is can to measure magnetic field of the earth, in the case of not by magnetic disturbance, if it is known that local longitude and latitude and sea
Pull out, it becomes possible to after earth magnetism field direction is measured, calculate magnetic dip angle, magnetic declination using various magnetic field of the earth models, be then able to
Calculate extremely north and posture etc..Magnetic field sensor advantage be do not allow simply it is perishable, but easily by magnetic disturbance, to use environment requirement
Compare high.
The content of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, proposes that the piezoelectricity of a kind of utilization piezo-electric effect and acceleration of gravity principle accelerates
Degree seeks ground sensor, and its simple in construction, reliability is high, available for various complex environments and big overload flight instruments.
In a test system, the external force produced by vibrating or impacting is acted on the mainly application of common piezoelectric acceleration sensor
In sensor, the dielectric of sensor is set to produce piezo-electric effect, so as to produce electric signal.The present invention's focuses on, and utilizes pressure
The deadweight of electric principle and mass, realize itself revolution flyer (for example rotating guided munition) seeks ground function.
To achieve these goals, the present invention uses following technical scheme：A kind of piezoelectric acceleration seeks ground sensor, including：
Inertial mass, is fitted in the piezo-electric crystal of the upper and lower end face of the inertial mass, one on the outside of every piezo-electric crystal
Insulation force-transmitting block and the pedestal for installing the inertial mass, piezo-electric crystal and force-transmitting block.The upper and lower part of pedestal is headed on
Pre-loading screw, the piezo-electric crystal of force-transmitting block are connected by wire with the power amplifier module on pedestal, the output end of power amplifier module
It is connected with the filtration module on pedestal, filtration module is again by electric signal output to the microcomputer chip on pedestal.
Preferably, the right side of the pedestal is connection screw thread, and left side is cylindrical section and is provided with groove, cylindrical section is divided into by groove,
Respectively there is a screw hole in lower two parts entity, upper and lower two parts entity centre position, and groove has parallel upper surface and following table
Face, and the side surface between upper surface and lower surface, side surface have two and enter what row conductor was connected with higher level's control system
Through hole.
Preferably, carry out insulation processing to the inertial mass, its upper surface and lower surface respectively with High-strength adhesive with it is upper,
Piezo-electric crystal bonding in lower end turns into an entirety, and the barycenter and base axis of inertial mass are coplanar, inertial mass with it is upper and lower
Side pressure electric crystal cross section is in the same size, can be rectangle, rhombus, circle, ellipse or polygon, and piezo-electric crystal can be
Quartz wafer or piezoelectric ceramics.
Preferably, the upper and lower end piezo-electric crystal High-strength adhesive and the upper and lower surface of pedestal are connected, pretension spiral shell
Upper and lower two parts that nail is arranged on the left of pedestal physically and hold out against upper and lower end piezo-electric crystal, make upper and lower end piezo-electric crystal and
Inertial mass is integrally attached to the groove centre position of pedestal, the face symmetrical above and below of inertial mass and the diameter parallel of pedestal.
Preferably, the force-transmitting block insulate and is relatively fixed with piezo-electric crystal, and respectively there are a pilot hole, pretension spiral shell in the outside of force-transmitting block
Nail is withstood on force-transmitting block by the screw hole of pedestal and the pilot hole of force-transmitting block.
Preferably, the upper and lower end piezoelectric ceramics respectively constitutes a signal output part, and the entity of pedestal constitutes another signal
Output end.
Preferably, the power amplifier module is fixed on the side surface of pedestal, its three inputs by wire respectively with above-mentioned signal
Output end is connected, the signal after the output amplification of two output end to filtration module.
Preferably, the filtration module is fixed on the side surface of pedestal, two input by wire respectively with power amplifier module
Output end connection, two output end exports filtered signal to microcomputer chip.
Preferably, the microcomputer chip is also secured on the side surface of pedestal, and two input is by wire respectively with filtering mould
The output end connection of block, two output end is exported by wire calculates treated signal to higher level's control system.
Preferably, the power amplifier module, filtration module, microcomputer chip can not have any in addition to wire with the piezo-electric crystal of pedestal
Metal is contacted, and can not have any metal contact in addition to wire between power amplifier module, filtration module, microcomputer chip.
Ground system is sought the invention further relates to one kind, it includes spiraling object and above-mentioned piezoelectric acceleration seeks ground sensor, wherein
Piezoelectric acceleration seeks rotation axis measurement of the barycenter installed in spiraling object of the inertial mass of ground sensor.
Using the piezoelectric acceleration seek ground sensor carry out seek ground method include：Ensured using structure design, installation and debugging by this
Piezoelectric acceleration seeks rotation axis measurement of the barycenter installed in spiraling object of the inertial mass of ground sensor.In initial rank
Section, piezo-electric crystal is parallel to the ground, and now inertial mass is self gravitation to the pressure of piezo-electric crystal, when sensor is with thing
When body rotates, due to tilting, the gravity of inertial mass is broken down into perpendicular to piezo-electric crystal and parallel to two of piezo-electric crystal
Component, now, component of the only inertial mass perpendicular to its surface that piezo-electric crystal is subject to.With being continually changing for stress,
The electric charge that the surface of piezo-electric crystal is produced is continually changing, and can export a cycle sinusoidal signal, when surface and the ground of piezo-electric crystal
When face is parallel, signal is in peak value, when the surface of piezo-electric crystal is perpendicular to the ground, and signal is in 0 value.Pass through flyer
Rotating speed and sinusoidal signal can calculate the angle that flyer is turned at any time, while can be calculated according to the amplitude of signal winged
The angle of pitch (i.e. flyer axis and the angle on ground) of row object.
Compared with gyroscope and magnetic field sensor, beneficial effects of the present invention include：1), error is small, and precision is high；2), tie
Structure is simple, and component is few, and cost is low；3), not by magnetic interference.
Brief description of the drawings
Fig. 1 is the structural front view that ground sensor is sought according to the piezoelectric acceleration of the present invention；
Fig. 2 is the structural side view that ground sensor is sought according to the piezoelectric acceleration of the present invention；
Fig. 3 is the base construction figure that ground sensor is sought according to the piezoelectric acceleration of the present invention.
Reference：
1：Inertial mass, 2：Piezo-electric crystal, 3：Force-transmitting block, 4：Pedestal, 5：Pre-loading screw, 6：Power amplifier module, 7：
Filtration module, 8：Microcomputer chip, 9：Wire, 10：Part entity on pedestal, 11：Part entity under pedestal, 12：Screw
Hole, 13：Upper surface, 14：Lower surface, 15：Side surface, 16：Through hole, 17：Connection screw thread.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, a kind of piezoelectric acceleration seeks ground sensor, including：Inertial mass 1, is fitted in the inertia
On mass 1, the piezo-electric crystal 2 of lower surface, an insulation force-transmitting block 3, Yi Jian installed in the every outside of piezo-electric crystal 2
Fill the pedestal 4 of the inertial mass 1, piezo-electric crystal 2 and force-transmitting block 3.The upper and lower part of pedestal 4, which has, heads on force-transmitting block 3
Pre-loading screw 5, piezo-electric crystal 2 is connected by wire 9 with the power amplifier module 6 on the pedestal 4, power amplifier module 6 it is defeated
Go out end to be connected with the filtration module 7 on pedestal 4, filtration module 7 is again by electric signal output on pedestal 4
Microcomputer chip 8.
The right side of pedestal 4 is connection screw thread 17, and left side is cylindrical section and is provided with groove, and cylindrical section is divided into upper and lower two by groove
Divide entity 10,11, respectively there is a screw hole 12 in the centre position of upper and lower two parts entity 10,11, and groove has parallel
Upper surface 13 and lower surface 14, and the side surface 15 between upper surface 13 and lower surface 14, side surface 15 has two
Enter the through hole 16 that row conductor is connected with higher level's control system.
Upper and lower end piezo-electric crystal 2 is connected with High-strength adhesive with the upper surface 13 of pedestal 4 and lower surface 14, pre-loading screw
5 are arranged on upper and lower two parts entity 10,11 in the left side of pedestal 4 and hold out against upper and lower end piezo-electric crystal 2, make upper and lower end
Piezo-electric crystal 2 and inertial mass 1 are integrally attached to the groove centre position of pedestal 4, the face symmetrical above and below of inertial mass 1
With the diameter parallel of pedestal 4.
Force-transmitting block 3 insulate and is relatively fixed with piezo-electric crystal 2, and respectively there are a pilot hole, pre-loading screw 5 in the outside of force-transmitting block 3
Withstood on by the screw hole 12 of pedestal 4 and the pilot hole of force-transmitting block 3 on force-transmitting block 3.
As shown in figure 3, carrying out insulation processing to inertial mass 1, its upper surface 13 is viscous with high intensity respectively with lower surface 14
Connect agent Nian Jie with upper and lower end piezo-electric crystal 2 as an entirety, barycenter and the axis co-planar of pedestal 4 of inertial mass 1 are used to
Property gauge block 1 and the cross section of upper and lower end piezo-electric crystal 2 are in the same size, can be rectangle, rhombus, circle, ellipse or many
Side shape, piezo-electric crystal 2 can be quartz wafer or piezoelectric ceramics.
With continued reference to Fig. 1 and Fig. 2, upper and lower end piezo-electric crystal 2 respectively constitutes a signal output part, the entity structure of pedestal 4
Into another signal output part.Power amplifier module 6 is fixed on the side surface 15 of pedestal 4, and its three inputs pass through 9 points of wire
It is not connected with two above-mentioned signal output parts, the signal after the output amplification of two output end to filtration module 7.Filtration module 7
Be fixed on High-strength adhesive on the side surface 15 of pedestal 4, two input by wire 9 respectively with power amplifier module 6
Output end is connected, and two output end exports filtered signal to microcomputer chip 8.Microcomputer chip 8 is also secured at pedestal 4
Side surface 15 on, output end of two input by wire 9 respectively with filtration module 7 is connected, two output end lead to
Cross the output of wire 9 and calculate treated signal to higher level's control system.Power amplifier module 6, filtration module 7, microcomputer chip 8 can not
There is any metal in addition to wire 9 to contact with pedestal 4, piezo-electric crystal 2, power amplifier module 6, filtration module 7, microcomputer chip
There can not be any metal contact in addition to wire 9 between 8.
Above-mentioned piezoelectric acceleration is sought into ground sensor application when spiraling object constitutes and seeks ground system, piezoelectric acceleration is passed with seeking
The barycenter of the inertial mass 1 of sensor is arranged on the rotation axis measurement of spiraling object.
Using the piezoelectric acceleration seek ground sensor carry out seek ground method include：Ensured using structure design, installation and debugging by this
Piezoelectric acceleration seeks rotation axis measurement of the barycenter installed in spiraling object of the inertial mass 1 of ground sensor.Initial
Stage, piezo-electric crystal 2 is parallel to the ground, and now inertial mass 1 is self gravitation to the pressure of piezo-electric crystal 2, works as biography
When sensor rotates with object, due to tilting, the gravity of inertial mass 1 is broken down into perpendicular to piezo-electric crystal 2 and parallel to pressure
Two component of electric crystal 2, now, component of the only inertial mass 1 perpendicular to its surface that piezo-electric crystal 2 is subject to.With
Being continually changing for stress, the electric charge that the surface of piezo-electric crystal 2 is produced is continually changing, and can export a cycle sinusoidal signal,
When the surface of piezo-electric crystal 2 is parallel to the ground, signal is in peak value, when the surface of piezo-electric crystal 2 is perpendicular to the ground, letter
Number in 0 value.The angle that flyer is turned over can be calculated at any time by the rotating speed and sinusoidal signal of flyer, while root
It is believed that number amplitude can calculate the angle of pitch (i.e. flyer axis and the angle on ground) of flyer, it is achieved thereby that seeking
Ground purpose.
Embodiment described above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is carried out
Limit, on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art make to technical scheme
In various modifications and change, the protection domain that claims of the present invention determination all should be fallen into.
Claims (12)
1. a kind of piezoelectric acceleration seeks ground sensor, including：Inertial mass (1), be fitted on the inertial mass (1),
The piezo-electric crystal (2) of lower surface, an insulation force-transmitting block (3) on the outside of every piezo-electric crystal (2), and installation should
The pedestal (4) of inertial mass (1), piezo-electric crystal (2) and force-transmitting block (3), the upper and lower part of pedestal (4) is headed on
The pre-loading screw (5) of force-transmitting block (3), piezo-electric crystal (2) passes through wire (9) and the power amplifier mould on pedestal (4)
Block (6) is connected, and the output end of power amplifier module (6) is connected with the filtration module (7) on pedestal (4), filters mould
Block (7) is again by electric signal output to the microcomputer chip (8) on pedestal (4).
2. a kind of piezoelectric acceleration according to claim 1 seeks ground sensor, it is characterised in that the right side of pedestal (4)
For connection screw thread (17), left side is cylindrical section and is provided with groove, and cylindrical section is divided into upper and lower two parts entity (10,11) by groove,
Respectively there is a screw hole (12) in the centre position of upper and lower two parts entity (10,11), and groove has parallel upper surface (13)
With lower surface (14), and the side surface (15) between upper surface (13) and lower surface (14), side surface (15) tool
There are two to enter the through hole (16) that row conductor is connected with higher level's control system.
3. a kind of piezoelectric acceleration according to claim 2 seeks ground sensor, it is characterised in that upper and lower end piezo-electric crystal
(2) it is connected with High-strength adhesive with the upper surface (13) of pedestal (4) and lower surface (14), pre-loading screw (5) is installed
On upper and lower two parts entity (10,11) on the left of pedestal (4) and upper and lower end piezo-electric crystal (2) is held out against, made upper and lower
Side pressure electric crystal (2) and inertial mass (1) are integrally attached to the groove centre position of pedestal (4), inertial mass (1)
Face symmetrical above and below and pedestal (4) diameter parallel.
4. a kind of piezoelectric acceleration according to claim 2 seeks ground sensor, it is characterised in that force-transmitting block (3) insulate
And be relatively fixed with piezo-electric crystal (2), respectively there is a pilot hole in the outside of force-transmitting block (3), and pre-loading screw (5) passes through pedestal
(4) screw hole (12) and the pilot hole of force-transmitting block (3) is withstood on force-transmitting block 3.
5. a kind of piezoelectric acceleration according to claim 2 seeks ground sensor, it is characterised in that to inertial mass (1)
Insulation processing is carried out, its upper surface (13) is with lower surface (14) respectively with High-strength adhesive and upper and lower end piezo-electric crystal (2)
Bonding turns into entirety, barycenter and pedestal (4) axis co-planar of inertial mass (1), inertial mass (1) with it is upper,
The cross section of lower end piezo-electric crystal 2 is in the same size, is rectangle, rhombus, circle, ellipse or polygon, and piezo-electric crystal 2 is stone
English chip or piezoelectric ceramics.
6. a kind of piezoelectric acceleration according to claim 1 seeks ground sensor, it is characterised in that upper and lower end piezo-electric crystal
(2) signal output part is respectively constituted, the entity of pedestal (4) constitutes another signal output part.
7. a kind of piezoelectric acceleration according to claim 6 seeks ground sensor, it is characterised in that power amplifier module (6) is solid
Be scheduled on the side surface of pedestal (4) (15), its three inputs by wire (9) respectively with two signal output parts
Connection, two output end exports the signal after amplification to filtration module (7).
8. a kind of piezoelectric acceleration according to claim 7 seeks ground sensor, it is characterised in that filtration module (7) is used
High-strength adhesive is fixed on the side surface of pedestal (4) (15), two input by wire (9) respectively with power amplifier
The output end connection of module (6), two output end exports filtered signal to microcomputer chip (8).
9. a kind of piezoelectric acceleration according to claim 8 seeks ground sensor, it is characterised in that microcomputer chip (8)
It is fixed on the side surface of pedestal (4) (15), two input is defeated with filtration module (7) respectively by wire (9)
Go out end connection, two output end is exported by wire (9) calculates treated signal to higher level's control system.
10. a kind of piezoelectric acceleration according to claim 1 seeks ground sensor, it is characterised in that power amplifier module (6),
Filtration module (7), microcomputer chip (8) can not have any in addition to wire (9) with pedestal (4) and piezo-electric crystal (2)
Metal contact, can not have between power amplifier module (6), filtration module (7), microcomputer chip (8) it is any except wire (9) with
Outer metal contact.
11. one kind seeks ground system, including spiraling object and the piezoelectricity according to claim 1-10 any one accelerate
Degree seeks ground sensor, and wherein piezoelectric acceleration seeks the barycenter of the inertial mass (1) of ground sensor installed in spiraling object
Rotation axis measurement.
12. seek the method bag that ground sensor seek ground using a kind of piezoelectric acceleration described in claim 1-10 any one
Include：The barycenter for the inertial mass (1) for ensuring the piezoelectric acceleration seeking ground sensor using structure design, installation and debugging is installed
In the rotation axis measurement of spiraling object；In the starting stage, piezo-electric crystal (2) is parallel to the ground, now inertial mass
(1) pressure to piezo-electric crystal (2) is self gravitation；When sensor rotates with object, due to tilting, inertia mass
The gravity of block (1) is broken down into perpendicular to piezo-electric crystal (2) and parallel to two component of piezo-electric crystal (2), now, pressure
Component of the only inertial mass (1) perpendicular to its surface that electric crystal (2) is subject to；With being continually changing for stress, piezoelectricity
The electric charge that the surface of crystal (2) is produced is continually changing, and can export a cycle sinusoidal signal；When the table of piezo-electric crystal (2)
When face is parallel to the ground, signal is in peak value, when the surface of piezo-electric crystal (2) is perpendicular to the ground, and signal is in 0 value；It is logical
The rotating speed and sinusoidal signal for crossing flyer calculate the angle that flyer is turned at any time, while being calculated according to the amplitude of signal
The angle of pitch of flyer, i.e. flyer axis and the angle on ground, it is achieved thereby that seeking ground purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610242756.6A CN107300384A (en) | 2016-04-15 | 2016-04-15 | A kind of piezoelectric acceleration seeks ground sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610242756.6A CN107300384A (en) | 2016-04-15 | 2016-04-15 | A kind of piezoelectric acceleration seeks ground sensor |
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| Publication Number | Publication Date |
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| CN107300384A true CN107300384A (en) | 2017-10-27 |
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ID=60137453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610242756.6A Pending CN107300384A (en) | 2016-04-15 | 2016-04-15 | A kind of piezoelectric acceleration seeks ground sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725174A (en) * | 2019-03-07 | 2019-05-07 | 中国船舶重工集团公司第七0四研究所 | Composite vibrating acceleration transducer |
| CN110360899A (en) * | 2018-04-11 | 2019-10-22 | 西安理工大学 | A kind of bispin guided cartridge seeks ground detection system and its detection method |
| CN114413844A (en) * | 2021-12-10 | 2022-04-29 | 北京智芯微电子科技有限公司 | Intelligent sensor |
-
2016
- 2016-04-15 CN CN201610242756.6A patent/CN107300384A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360899A (en) * | 2018-04-11 | 2019-10-22 | 西安理工大学 | A kind of bispin guided cartridge seeks ground detection system and its detection method |
| CN109725174A (en) * | 2019-03-07 | 2019-05-07 | 中国船舶重工集团公司第七0四研究所 | Composite vibrating acceleration transducer |
| CN109725174B (en) * | 2019-03-07 | 2024-04-30 | 中国船舶重工集团公司第七0四研究所 | Composite vibration acceleration sensor |
| CN114413844A (en) * | 2021-12-10 | 2022-04-29 | 北京智芯微电子科技有限公司 | Intelligent sensor |
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Application publication date: 20171027 |