CN206788385U - A kind of geophone signal Acquisition Circuit - Google Patents
A kind of geophone signal Acquisition Circuit Download PDFInfo
- Publication number
- CN206788385U CN206788385U CN201720487750.5U CN201720487750U CN206788385U CN 206788385 U CN206788385 U CN 206788385U CN 201720487750 U CN201720487750 U CN 201720487750U CN 206788385 U CN206788385 U CN 206788385U
- Authority
- CN
- China
- Prior art keywords
- movement
- circuit
- amplifier
- signal acquisition
- sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses a kind of geophone signal Acquisition Circuit, belong to piezoelectric seismometer technical field, the signal acquisition circuit includes amplifying circuit and filter circuit, and filter circuit is connected with bridge-type vibrating sensing circuit by amplifying circuit, and bridge-type vibrating sensing circuit includes two groups of sensing movements.The utility model is based on vibrating sensing unit and Double deference amplifying circuit, provide a kind of input and output of full-balance, with high common mode inhibition capacity, the interference of electromagnetic field in the external world can be effectively offset, the higher input useful signal of signal to noise ratio is improved for subsequent acquisition circuit.
Description
Technical field
The utility model belongs to piezoelectric seismometer field, more particularly to a kind of geophone signal Acquisition Circuit.
Background technology
To adapt to the complicated needs of the geological prospecting field construction environment such as oil, wave detector requirement provides low noise for seismic detector
The ground deep layer useful signal of sound.Therefore, wave detector is made up of vibrating sensing unit and signal conditioning circuit.But wave detector no matter from
Sensing unit or signal conditioning circuit are inevitably disturbed by external electromagnetic field, because deep layer vibration signal is unusual
It is faint cause vibrating sensing unit amplitude output signal it is very low, traditional detector Acquisition Circuit poor anti jamming capability, often by
To the interference of outer signals, clearly useful signal can not be obtained, it is difficult to reach higher signal to noise ratio.
Meanwhile the connection between common wave detector vibrating sensing movement and signal conditioning circuit uses independent sensing unit
With the connection of finishing circuit, although circuit can use Differential Input mode, vibrating sensing unit is disturbed to be believed as differential mode
It number can all act on the input of circuit, because the common-mode rejection ratio of single circuit is also impossible to be made very high, signal conditioning circuit
Itself noise and the interference being subject to equally can also act on next stage Acquisition Circuit as difference mode signal.So when movement is defeated
When the useful signal gone out is very weak, useful signal is highly susceptible to external electromagnetic field or the rustle of leaves in the wind environmental disturbances, and make
Useful signal is submerged among noise, even if signal conditioning circuit and follow-up signal processing mode how advanced be also impossible to
Achieve one's goal to obtain required signal message.
The content of the invention
In view of this, the utility model is based on vibrating sensing unit and Double deference amplifying circuit, there is provided a kind of full balance
The input and output of formula, there is high common mode inhibition capacity, can effectively offset the interference of electromagnetic field in the external world, be subsequent acquisition electricity
Improve the higher input useful signal of signal to noise ratio in road.
The utility model is solved the above problems by following technological means：
A kind of geophone signal Acquisition Circuit, including amplifying circuit and filter circuit, it is characterised in that the filter circuit
Bridge-type vibrating sensing circuit is connected with by amplifying circuit, the bridge-type vibrating sensing circuit includes two groups of sensing movements, two groups
Sensing movement is respectively the first movement and the second movement, and one end of first movement is grounded, the other end of first movement
Amplifying circuit is connected, first resistor is provided between the other end and ground of first movement；One termination of second movement
Ground, the other end connection amplifying circuit of second movement, is provided with the second electricity between the other end and ground of second movement
Resistance.
Further, the sensing movement includes moving-coil type vibrating sensing movement or piezoelectric type sensing movement.
Further, the piezoelectric type sensing movement includes core shell, movement gland, piezoelectric chip and piezoelectric chip
The movement mass body of upper setting, the movement mass body are maked somebody a mere figurehead in core shell by piezoelectric chip.
Further, the amplifying circuit is that Double deference amplifying circuit includes two groups of amplifiers, and two groups of amplifiers are respectively
First amplifier and the second amplifier, the input of first amplifier connect the first movement, first amplifier it is defeated
Go out end connection filter circuit；The input of second amplifier connects the second movement, and the output end of second amplifier connects
Connect filter circuit.
Further, first amplifier and the second amplifier select LT6013 type amplifiers.
Further, the filter circuit includes balanced type high-pass filtering circuit and second order balanced type low-pass filter circuit,
The output signal of the amplifying circuit passes through the balanced type high-pass filtering circuit and second order balanced type low-pass filter circuit successively
Carry out signal filtering.
A kind of geophone signal Acquisition Circuit of the present utility model has the advantages that：
The utility model discloses a kind of geophone signal Acquisition Circuit, belong to piezoelectric seismometer technical field, the signal
Acquisition Circuit includes amplifying circuit and filter circuit, and filter circuit is connected with bridge-type vibrating sensing circuit, bridge by amplifying circuit
Formula vibrating sensing circuit includes two groups of sensing movements.The utility model is based on vibrating sensing unit and Double deference amplifying circuit, carries
A kind of input and output of full-balance have been supplied, there is high common mode inhibition capacity, the electromagnetic field that can effectively offset the external world is done
Disturb, the higher input useful signal of signal to noise ratio is improved for subsequent acquisition circuit.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, below by embodiment it is required use it is attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation of geophone signal Acquisition Circuit of the utility model；
Fig. 2 is a kind of piezoelectric type sensing cassette mechanism structure schematic diagram of geophone signal Acquisition Circuit of the utility model；
Fig. 3 is a kind of circuit diagram of geophone signal Acquisition Circuit of the utility model.
Embodiment
In description of the present utility model, it is to be understood that term " " center ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply and be signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
New limitation.Term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In description of the present utility model, unless otherwise indicated, the implication of " multiple "
It is two or more.
The utility model is described in detail below with reference to accompanying drawing.
As shown in figure 1, a kind of geophone signal Acquisition Circuit, including amplifying circuit and filter circuit, the filter circuit
Bridge-type vibrating sensing circuit is connected with by amplifying circuit, the bridge-type vibrating sensing circuit includes two groups of sensing movements, two groups
Sensing movement is respectively the first movement and the second movement, and one end of first movement is grounded, the other end of first movement
Amplifying circuit is connected, first resistor R1 is provided between the other end and ground of first movement；One end of second movement
Ground connection, the other end connection amplifying circuit of second movement, second is provided between the other end and ground of second movement
Resistance R2.
Specifically, the sensing movement includes moving-coil type vibrating sensing movement or piezoelectric type sensing movement.
As shown in Fig. 2 piezoelectric type sensing movement is included on core shell, movement gland, piezoelectric chip and piezoelectric chip
The movement mass body of setting, the movement mass body are maked somebody a mere figurehead in core shell by piezoelectric chip.
Specifically, the bottom of core shell is provided with mounting seat, the core shell is tight by piezoelectric chip by packing ring
It is pressed in mounting seat.
It should be noted that piezoelectric type sensing movement can also select LHJX-1A types to sense movement.
As shown in figure 3, the amplifying circuit, which is Double deference amplifying circuit, includes two groups of amplifiers, two groups of amplifiers are respectively
First amplifier and the second amplifier, the input of first amplifier connect the first movement, first amplifier it is defeated
Go out end connection filter circuit；The input of second amplifier connects the second movement, and the output end of second amplifier connects
Connect filter circuit.
Specifically, first amplifier and the second amplifier select LT6013 type amplifiers.
As shown in figure 3, amplifying circuit selects LT6013 type precision operational-amplifiers, itself and 3rd resistor R3, the 4th resistance
R4, the 5th resistance R5 form Double deference amplifying circuit.
First electric capacity C1, the second electric capacity C2 and the tenth resistance R10 Compositional balance formula high-pass filtering circuits, the 3rd electric capacity C3,
4th electric capacity C4 and the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9 composition second order balanced type LPFs
Circuit.
Specifically, the filter circuit includes balanced type high-pass filtering circuit and second order balanced type low-pass filter circuit, institute
The output signal for stating amplifying circuit is entered by the balanced type high-pass filtering circuit and second order balanced type low-pass filter circuit successively
Row signal filters.
It should be noted that bridge-type vibrating sensing circuit passes sequentially through amplifying circuit, filter circuit connection signal acquisition system
System.Under actual conditions, either which kind of sensing mode, perception can be all equivalent to, the mode that capacitive, the resistance of resistive or LC combine,
It is inevitably disturbed by the external world, particularly the interference of electromagnetic field, but class bridge-type balances combination entirely, makes class bridge-type complete
The common mode disturbances suffered by symmetrical device on balancing circuitry, can be offset accordingly, on the premise of signal is certain, noise
It is largely increased than S/N.Similarly, the double input of signal conditioning circuit, fully balanced circuit design and difference output, together
Sample ensure that the common mode interference signal being subject to can be eliminated or weaken.So as to ensure that the letter for being input to subordinate's acquisition system
Number higher signal to noise ratio.
During concrete operations, foregoing circuit is slightly changed using following equivalent technology scheme, can also realize the utility model
Purpose：
1. a single vibrating sensing movement and single amplifying circuit composition one detection unit, wave filter etc. are still using balance
Mode, now, amplifying circuit can be made of one with movement unit, be easy to the optimization of mechanical structure.
2. a single vibrating sensing movement and nonequilibrium signal conditioning circuit form a detection unit, except movement and letter
Number finishing circuit is still that the connection of class bridge-type is outer, between two detection units and wave detector output subsequent acquisition circuit and with class bridge
Formula mode come realize balanced differential export.Such mode can be integral such as by single movement and circuit independence, is easy to structure
Optimization.
The utility model discloses a kind of geophone signal Acquisition Circuit, belong to piezoelectric seismometer technical field, the signal
Acquisition Circuit includes amplifying circuit and filter circuit, and filter circuit is connected with bridge-type vibrating sensing circuit, bridge by amplifying circuit
Formula vibrating sensing circuit includes two groups of sensing movements.The utility model is based on vibrating sensing unit and Double deference amplifying circuit, carries
A kind of input and output of full-balance have been supplied, there is high common mode inhibition capacity, the electromagnetic field that can effectively offset the external world is done
Disturb, the higher input useful signal of signal to noise ratio is improved for subsequent acquisition circuit.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (6)
1. a kind of geophone signal Acquisition Circuit, including amplifying circuit and filter circuit, it is characterised in that the filter circuit leads to
Cross amplifying circuit and be connected with bridge-type vibrating sensing circuit, the bridge-type vibrating sensing circuit includes two groups of sensing movements, two groups of biographies
Sense movement is respectively the first movement and the second movement, and one end of first movement is grounded, and the other end of first movement connects
Amplifying circuit is connect, first resistor is provided between the other end and ground of first movement；One end ground connection of second movement,
The other end connection amplifying circuit of second movement, second resistance is provided between the other end and ground of second movement.
2. geophone signal Acquisition Circuit according to claim 1, it is characterised in that：The sensing movement includes moving-coil type
Vibrating sensing movement or piezoelectric type sensing movement.
3. geophone signal Acquisition Circuit according to claim 2, it is characterised in that：The piezoelectric type sensing movement includes
The movement mass body set on core shell, movement gland, piezoelectric chip and piezoelectric chip, the movement mass body is by piezoelectricity
Chip is maked somebody a mere figurehead in core shell.
4. geophone signal Acquisition Circuit according to claim 3, it is characterised in that：The amplifying circuit is put for Double deference
Big circuit includes two groups of amplifiers, and two groups of amplifiers are respectively the first amplifier and the second amplifier, first amplifier
Input connects the first movement, the output end connection filter circuit of first amplifier；The input of second amplifier
Connect the second movement, the output end connection filter circuit of second amplifier.
5. geophone signal Acquisition Circuit according to claim 4, it is characterised in that：First amplifier and second is put
Big device selects LT6013 type amplifiers.
6. geophone signal Acquisition Circuit according to claim 5, it is characterised in that：The filter circuit includes balanced type
High-pass filtering circuit and second order balanced type low-pass filter circuit, the output signal of the amplifying circuit pass through the balanced type successively
High-pass filtering circuit and second order balanced type low-pass filter circuit carry out signal filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720487750.5U CN206788385U (en) | 2017-05-04 | 2017-05-04 | A kind of geophone signal Acquisition Circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720487750.5U CN206788385U (en) | 2017-05-04 | 2017-05-04 | A kind of geophone signal Acquisition Circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206788385U true CN206788385U (en) | 2017-12-22 |
Family
ID=60710865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720487750.5U Expired - Fee Related CN206788385U (en) | 2017-05-04 | 2017-05-04 | A kind of geophone signal Acquisition Circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206788385U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001796A (en) * | 2018-06-12 | 2018-12-14 | 西安陆海地球物理科技有限公司 | A kind of geophone signal conditioning circuit |
| CN109347445A (en) * | 2018-08-24 | 2019-02-15 | 西安陆海地球物理科技有限公司 | A kind of wave detector amplifying circuit |
-
2017
- 2017-05-04 CN CN201720487750.5U patent/CN206788385U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001796A (en) * | 2018-06-12 | 2018-12-14 | 西安陆海地球物理科技有限公司 | A kind of geophone signal conditioning circuit |
| CN109347445A (en) * | 2018-08-24 | 2019-02-15 | 西安陆海地球物理科技有限公司 | A kind of wave detector amplifying circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206788385U (en) | A kind of geophone signal Acquisition Circuit | |
| CN104061969B (en) | A kind of capacitance-type electromagnetic flow signal adapter | |
| CN204789958U (en) | Magneto resistive sensor operating circuit | |
| CN102998696B (en) | A kind of micro seismic oscillation sniffer | |
| CN104020490A (en) | Full-digital MEMS three-component geophone | |
| CN104880143B (en) | A kind of multi-modal failure detector of bridge-type resistance strain sensor | |
| CN106526659B (en) | Array electrochemistry feedback seismograph | |
| CN105974338A (en) | Magnetic sensor | |
| CN101408595A (en) | Torsional pendulum type minitype magnetic sensor | |
| CN206583845U (en) | Adaptive density of hydrogen detection circuit based on hydrogen gas sensor | |
| CN205404830U (en) | Dynamic balance formula wide band vibrations wave detector | |
| CN207215885U (en) | A kind of closed-loop current sensors | |
| CN205940716U (en) | Liquid level sensor | |
| CN108120439A (en) | A kind of three-component induction coil attitude measurement method and device | |
| CN104729544B (en) | HALIOS-based eddy current sensor resistant to strong magnetic interference | |
| CN107247288A (en) | A kind of seismic observation system and the method for generating earthquake transmission function | |
| CN103575383B (en) | The low frequency multi output passive servo vibrating sensor of acceleration and speed can be measured simultaneously | |
| CN102778585B (en) | Sensing device | |
| CN205607997U (en) | Cantilever beam biochemical sensor based on huge pressure drag structure | |
| CN208537725U (en) | A kind of geophone signal processing circuit | |
| CN204457763U (en) | A kind of receiving circuit of three-component induction logging loop construction | |
| CN209055666U (en) | A kind of signal acquisition circuit of digital geophone | |
| CN202720048U (en) | Low frequency multiple output passive servo vibration sensor capable of simultaneously measuring acceleration and velocity | |
| CN215066770U (en) | Low-noise capacitive MEMS acceleration sensor | |
| CN208187333U (en) | A kind of capacitive displacement sensing device transmitted at a distance based on transformer secondary output |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 |