CN209676103U - A kind of adaptive vertical coupled vibrating sensor - Google Patents
A kind of adaptive vertical coupled vibrating sensor Download PDFInfo
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- CN209676103U CN209676103U CN201920538385.5U CN201920538385U CN209676103U CN 209676103 U CN209676103 U CN 209676103U CN 201920538385 U CN201920538385 U CN 201920538385U CN 209676103 U CN209676103 U CN 209676103U
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Abstract
The utility model relates to a kind of adaptive vertical coupled vibrating sensor, including cylinder, the resonant cavity of sealing is constituted in the cylinder, electromagnetical vibration system and piezoelectric vibration system are provided in cylinder;Extraneous vibration causes electromagnetical vibration system vibration to generate electromagnetic telecommunication number, and electromagnetical vibration system causes the airflow fluctuation in resonant cavity that piezoelectric vibration system generation vibration is made to generate piezoelectricity electric signal, realizes the coupling of electromagnetic telecommunication number and piezoelectricity electric signal when vibrating.The utility model electric and magnetic oscillation sensor and piezoelectric vibrator are installed in the resonant cavity sealed in cylinder, the spring of electric and magnetic oscillation sensor --- quality vibrational system generates vibration under the action of external vibration, cause airflow fluctuation in cavity, airflow fluctuation drives piezoelectric vibrator vibration to generate piezoelectricity electric signal, two kinds of effects are in once per revolution vibration, the frequency difference between signal is avoided, convenient for the post-processing of signal.
Description
Technical field
The utility model relates to vibrating sensor, specially a kind of adaptive vertical coupled vibrating sensor.This is practical new
Type can be used for various vibration detections, such as the geological prospecting of various geological conditions, vibration equipment, seismic monitoring etc..Especially
Seismic prospecting suitable for the environment such as the vibration monitoring in underwater sound field and ocean, lake, marsh.
Background technique
Electric and magnetic oscillation sensor is a kind of electromechanical transformation apparatus that vibrational energy is converted to electric energy.Coil suspension Yu Youyong
Magnet is formed by gap magnetic field, and vibration makes to generate relative motion between coil and magnet, and coil cutting magnetic line is in coil
Middle generation induced electromotive force, output form electric signal.Bobbin is suspended on lower generate of vibrational excitation effect by spring and moves back and forth,
Bobbin is made of metal, so that bobbin is generated current vortex in magnetic fields line during the motion, in turn in magnetic field
Vortex make again bobbin generate damping force, prevent bobbin vibrate.
According to Faraday's electromagnetic induction law, wire coil length is L transports perpendicular to magnetic flux density B, and perpendicular to speed v
It is dynamic, an electromotive force is generated at the both ends of coil, can be calculated as follows:
V=vBL
Voltage value is proportional to coil caused by seismic energy for the relative velocity of magnet, it can be assumed that magnetic flux density is basic
Upper is a constant, can complete the voltage signal that a circuit carrys out the generation of monitoring vibration sensor, this signal is generated to detect
The characteristic of vibrational structure.
Piezoelectric vibration pickup is the sensor based on piezoelectric effect.Its sensing element is made out of a piezoelectric material, and is
A kind of self-power generation type and electromechanical transformation formula sensor.Piezoelectric material stress rear surface generates charge.This charge is through charge amplifier
With the voltage output for being proportional to suffered external force after measuring circuit amplification and transforming impedance with regard to becoming.It is mainly used to measurement vibration, power
Etc. non-electrical physical quantity, advantage is bandwidth, high sensitivity, signal-to-noise ratio is high, structure is simple, reliable operation and light-weight etc..It lacks
Point is that certain piezoelectric materials need damp-proof treatment, and the DC response exported is poor, needs using high input impedance circuit or electricity
Lotus amplifier overcomes this defect.
Summary of the invention
The utility model proposes a kind of adaptive vertical coupled vibrating sensors, solve the problems of the prior art.
In order to reach the purpose of this utility model, the utility model proposes scheme it is as follows:
A kind of adaptive vertical coupled vibrating sensor, including cylinder, the interior resonant cavity for constituting sealing of the cylinder, in cylinder
It is provided with electromagnetical vibration system and piezoelectric vibration system in vivo;Extraneous vibration causes electromagnetical vibration system vibration to generate electromagnetic telecommunication
Number, electromagnetical vibration system causes the airflow fluctuation in resonant cavity to make piezoelectric vibration system that vibration generation piezoelectricity telecommunications occur when vibrating
Number, realize the coupling of electromagnetic telecommunication number and piezoelectricity electric signal.
Further, the electromagnetical vibration system includes rocker and the electric and magnetic oscillation sensor that is arranged on rocker, described
Rocker is arranged on the cinclides of cylinder by the bearing support mechanism at its both ends, and rocker can keep electric and magnetic oscillation sensor to hang down always
Directly;Shaft is set at the rocker both ends, the outer end of shaft connects binding post, and spring pressuring plate is pressed in binding post outer end;The electricity
The electric signal of magnetic vibration sensor connects shaft, and electric signal is reached binding post by shaft, and binding post passes through spring pressuring plate for telecommunications
Number outflow;The piezoelectric vibration system includes two groups of piezoelectric vibrators, and two groups of piezoelectric vibrators are separately positioned on cylinder upper and lower ends, is pressed
The electric signal of electric tachometer indicator is exported by the insulated terminal on barrel.
Further, the bearing support mechanism includes bearing block and the bearing that is arranged in bearing block, and bearing block passes through
Screw is fixed on the cinclides of cylinder, and the both ends of rocker are arranged in the bearing corresponding to them, and the spring pressuring plate passes through spiral shell
Nail is fixed on bearing block outer wall and is pressed on outside binding post.
Further, the electric and magnetic oscillation sensor include shell, upper magnetic boots, lower magnetic boots, online coil, offline coil,
Permanent magnet, upper spring piece, lower spring leaf, upper cover, lower cover and spring collar;The upper cover, lower cover are and cage connection;Upper magnetic
Boots, lower magnetic boots are arranged in permanent magnet upper and lower side;Online coil, lower coil frame are arranged between shell and upper and lower magnetic boots, are set in
Outside permanent magnet, equal winding coil in online coil, offline coil;Upper and lower bobbin is outstanding by upper and lower spring leaf and spring collar
It hangs over outside permanent magnet, upper and lower bobbin may be implemented to vibrate up and down.
Further, the piezoelectric vibrator includes piezoelectric disc, piezoelectric disc be adhered to the upper surface of substrate below or on
Lower two sides is bonded with electrode foil on piezoelectric disc.
Further, air channel is offered on the upper and lower cover.
Further, the piezoelectric disc is piezoelectric ceramics or piezopolymer.
Compared with prior art, the utility model has the beneficial effects that
1. the inspection that two kinds of couplings of piezoelectric effect and electromagnetic induction are used for vibration signal by the utility model sensor
It surveys, using piezoelectricity bandwidth, the small feature of distorted signals plays compensating action to high-frequency signal;Using electromagnetic induction in low
Frequency signal gain is high, and the two is complementary;The utility model electric and magnetic oscillation sensor and piezoelectric vibrator are installed on being total to for the interior sealing of cylinder
It shakes in chamber, the spring of electric and magnetic oscillation sensor --- quality vibrational system generates vibration under the action of external vibration, causes cavity
Middle airflow fluctuation, airflow fluctuation drive piezoelectric vibrator vibration to generate piezoelectricity electric signal, and two kinds of effects are in once per revolution vibration, avoid letter
Frequency difference between number, convenient for the post-processing of signal.
2. the electric and magnetic oscillation sensors use electromagnetic inductive effect of the utility model, generates inductive loop in bobbin,
To generate damping force, it is ensured that vibrational system has suitable damping effect;This damping action can guarantee that piezoelectricity shakes
Interference between the front and back signal of son seldom can help to improve the resolution of signal;The inductance of electromagnetic induction coil can be
Piezoelectric signal provides impedance, improves the feature for the DC response difference that piezoelectric effect generates, benefit can be played to electromagnetic induction signal
The effect of repaying makes the sensitivity of entire sensor get a promotion.
3. the cavity body structure of the sensor of the utility model be conducive to the underwater sound in terms of signal detection, pass electric and magnetic oscillation
Piezoelectric vibrator is excited to vibrate simultaneously when sensor vibrates, seal cavity resonates in turn, air-flow push the spring --- quality vibration system
System vibration, while electric and magnetic oscillation sensor being made also to generate electric signal output, this interaction is so that this sensor not only can be with
For underwater UNDERWATER ACOUSTIC SIGNAL DETECTION, while it can be used for the detection of the various structure vibration signals of land;Its signal can
Effectively to be reinforced and complementation.
4. the electric and magnetic oscillation sensor of the utility model is mounted on swing frame structure, whenever electric and magnetic oscillation all can guarantee
Sensor is in plumbness, and the work of electric and magnetic oscillation sensor can be effectively ensured.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model one embodiment;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the swing frame structure schematic diagram of the utility model one embodiment;
Fig. 4 is the electric and magnetic oscillation sensor structure schematic diagram of the utility model one embodiment;
Fig. 5 is the upper and lower cover structural schematic diagram of the utility model one embodiment;
Fig. 6 is the piezoelectric vibrator structural schematic diagram of the utility model one embodiment.
In figure, 1- cylinder, 2- rocker, 3- electric and magnetic oscillation sensor, 4- bearing support mechanism, 5- shaft, 6- binding post, 7-
Spring pressuring plate, 8- piezoelectric vibrator, 9- insulated terminal, 10- bearing block, 11- bearing, 12- sealing-plug, 13- shell, the upper magnetic boots of 14-,
Magnetic boots under 15-, the online coil of 16-, the offline coil of 17-, 18- permanent magnet, 19- upper spring piece, spring leaf under 20-, 21- upper cover,
22- lower cover, 23- spring collar, 24- coil, 25- air channel, 26- rectangle retainer ring, 27- piezoelectric disc, 28- substrate, 29- electrode
Thin slice, 30- terminal plate.
Specific embodiment
The utility model is described in further detail below by specific embodiment combination attached drawing.It is wherein different to implement
Similar component uses associated similar element numbers in mode.In the following embodiments, many datail descriptions are
In order to enable the application can be better understood.However, those skilled in the art can recognize without lifting an eyebrow, it is part of
Feature is dispensed in varied situations, or can be substituted by other elements, material, method.In some cases,
The relevant some operations of the application are there is no display in the description or describe, this is the core in order to avoid the application
It is flooded by excessive description, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary,
They can completely understand relevant operation according to the general technology knowledge of description and this field in specification.
The basic ideas and principle of the utility model are: by piezoelectric vibration sensors and electric and magnetic oscillation sensor compound one
Body is installed in the resonant cavity sealed in cylinder, and the spring of electric and magnetic oscillation sensor --- quality vibrational system is in extraneous vibration
It acting on lower generate to vibrate, causes airflow fluctuation in cavity, airflow fluctuation drives piezoelectric vibrator to vibrate and generates piezoelectricity electric signal, and two kinds
Effect is in once per revolution vibration, avoids the frequency difference between signal, convenient for the post-processing of signal;The mutual coupling of the two,
Effectively improve the receiving sensitivity of vibrating sensor.
It is further illustrated below by attached drawing:
A kind of adaptive vertical coupled vibrating sensor referring to figure 1 and figure 2, including cylinder 1, in the cylinder 1
The resonant cavity for constituting sealing, is provided with electromagnetical vibration system and piezoelectric vibration system in cylinder 1;Electromagnetical vibration system includes pendulum
Frame 2 and the electric and magnetic oscillation sensor 3 being arranged on rocker 2, rocker 2 are arranged by the bearing support mechanism 4 at its both ends in cylinder 1
Cinclides on, rocker 2 can keep electric and magnetic oscillation sensor 3 thereon vertical always;At 2 both ends of rocker, shaft 5, shaft 5 are set
Outer end connect binding post 6, spring pressuring plate 7 is pressed in 6 outer end of binding post;The electric signal of electric and magnetic oscillation sensor 3 is connected to shaft
5, electric signal is reached binding post 6 by shaft 5, and binding post 6 is spread out of electric signal by spring pressuring plate 7;Piezoelectric vibration system includes
Two groups of piezoelectric vibrators 8, two groups of piezoelectric vibrators 8 are separately positioned on the upper and lower ends of cylinder 1, and the electric signal of piezoelectric vibrator 8 passes through cylinder
Insulated terminal 9 on wall exports;All electric signal outputs are connected on external terminal plate 30 by conducting wire, realize signal
In series and parallel.
Referring to Fig. 3, bearing support mechanism 4 includes bearing block 10 and the bearing 11 being arranged in bearing block 10, bearing block 10
It is fixed by screws on the cinclides of cylinder 1, the bearing 11 corresponding to them is arranged in by boss structure for the both ends of rocker 2
In, spring pressuring plate 7 is fixed by screws in 10 outer wall of bearing block and is pressed on outside binding post 6, and sealing is arranged in bearing saddle bore
Plug 12 guarantees closed in cylinder 1.
Referring to fig. 4, electric and magnetic oscillation sensor 3 includes shell 13, upper magnetic boots 14, lower magnetic boots 15, online coil 16, lower coil
Frame 17, permanent magnet 18, upper spring piece 19, lower spring leaf 20, upper cover 21, lower cover 22 and spring collar 23;Upper cover 21, lower cover 22 are equal
It is connect with shell 13;Upper magnetic boots 14, lower magnetic boots 15 are arranged in 18 upper and lower side of permanent magnet;Online coil 16, offline coil 17 are arranged
Between shell 13 and upper and lower magnetic boots, it is set in outside permanent magnet 18, equal winding coil 24 in online coil 16, offline coil 17;
Upper and lower bobbin is suspended on outside permanent magnet 18 by upper and lower spring leaf and spring collar 23, and upper and lower bobbin may be implemented
Lower vibration.Referring to Fig. 5, air channel 25 is offered on upper and lower cover, to guarantee inside and outside ventilation.
Referring to Fig. 1 and Fig. 6, two groups of piezoelectric vibrators 8 are mounted on the both ends of cylinder 1, are fixed using rectangle retainer ring 26, pressure
Electric tachometer indicator 8 includes piezoelectric disc 27 and substrate 28, and piezoelectric disc 27 is adhered to the upper surface of substrate 28 or following or upper and lower surface, pressure
Electrode foil 29 is bonded on electric disk 27;Piezoelectric disc 27 is piezoelectric ceramics or piezopolymer.
Use above specific case is illustrated the utility model, is merely used to help understand the utility model, and
Not to limit the utility model.Think of for those skilled in the art of the present invention, according to the utility model
Think, several simple deductions, deformation or replacement can also be made.
Claims (7)
1. a kind of adaptive vertical coupled vibrating sensor, it is characterised in that: including cylinder, being total to for sealing is constituted in the cylinder
Shake chamber, and electromagnetical vibration system and piezoelectric vibration system are provided in cylinder;Extraneous vibration causes electromagnetical vibration system vibration to produce
Raw electromagnetic telecommunication number, electromagnetical vibration system cause the airflow fluctuation in resonant cavity to make piezoelectric vibration system that vibration production occur when vibrating
Raw piezoelectricity electric signal, realizes the coupling of electromagnetic telecommunication number and piezoelectricity electric signal.
2. adaptive vertical coupled vibrating sensor according to claim 1, it is characterised in that: the electromagnetical vibration system packet
The electric and magnetic oscillation sensor for including rocker and being arranged on rocker, the rocker are arranged by the bearing support mechanism at its both ends in cylinder
On the cinclides of body, rocker can keep electric and magnetic oscillation sensor vertical always;At the rocker both ends, shaft, the outer end of shaft are set
Binding post is connected, spring pressuring plate is pressed in binding post outer end;The electric signal of the electric and magnetic oscillation sensor connects shaft, and shaft will be electric
Signal reaches binding post, and binding post is spread out of electric signal by spring pressuring plate;The piezoelectric vibration system includes two groups of piezoelectricity vibrations
Son, two groups of piezoelectric vibrators are separately positioned on cylinder upper and lower ends, and the electric signal of piezoelectric vibrator is defeated by the insulated terminal on barrel
Out.
3. adaptive vertical coupled vibrating sensor according to claim 2, it is characterised in that: bearing support mechanism packet
The bearing for including bearing block and being arranged in bearing block, bearing block are fixed by screws on the cinclides of cylinder, and the both ends of rocker are set
It sets in the bearing corresponding to them, the spring pressuring plate is fixed by screws in bearing block outer wall and is pressed on outside binding post.
4. adaptive vertical coupled vibrating sensor according to claim 3, it is characterised in that: the electric and magnetic oscillation sensor
Including shell, upper magnetic boots, lower magnetic boots, online coil, offline coil, permanent magnet, upper spring piece, lower spring leaf, upper cover, lower cover and
Spring collar;The upper cover, lower cover are and cage connection;Upper magnetic boots, lower magnetic boots are arranged in permanent magnet upper and lower side;Online coil,
Lower coil frame is arranged between shell and upper and lower magnetic boots, is set in outside permanent magnet, equal winding line in online coil, offline coil
Circle;Upper and lower bobbin is suspended on outside permanent magnet by upper and lower spring leaf and spring collar, and upper and lower bobbin may be implemented up and down
Vibration.
5. adaptive vertical coupled vibrating sensor according to claim 4, it is characterised in that: the piezoelectric vibrator includes pressure
Electric disk, piezoelectric disc are adhered to the upper surface of substrate or following or upper and lower surface, are bonded with electrode foil on piezoelectric disc.
6. adaptive vertical coupled vibrating sensor according to claim 5, it is characterised in that: opened on the upper and lower cover
Equipped with air channel.
7. adaptive vertical coupled vibrating sensor according to claim 6, it is characterised in that: the piezoelectric disc is piezoelectricity
Ceramics or piezopolymer.
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CN201920538385.5U CN209676103U (en) | 2019-04-19 | 2019-04-19 | A kind of adaptive vertical coupled vibrating sensor |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109995215A (en) * | 2019-04-19 | 2019-07-09 | 西安工业大学 | Piezoelectricity and electromagnetic coupling vibrating sensor |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109995215A (en) * | 2019-04-19 | 2019-07-09 | 西安工业大学 | Piezoelectricity and electromagnetic coupling vibrating sensor |
CN109995215B (en) * | 2019-04-19 | 2024-08-20 | 西安工业大学 | Piezoelectric and electromagnetic coupling vibration sensor |
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