CN205353223U - Vibration capacitanc electrostatic transducer - Google Patents
Vibration capacitanc electrostatic transducer Download PDFInfo
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- CN205353223U CN205353223U CN201620077005.9U CN201620077005U CN205353223U CN 205353223 U CN205353223 U CN 205353223U CN 201620077005 U CN201620077005 U CN 201620077005U CN 205353223 U CN205353223 U CN 205353223U
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- pole plate
- signal
- sensing pole
- vibrating device
- metal film
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Abstract
The utility model discloses a vibration capacitanc electrostatic transducer, include: the induction pole board for measured object response output static signal is close, insulating fixing part, one end with vibrating device is fixed, the other end with the induction pole board is fixed, vibrating device for drive according to the control signal periodic vibration the induction pole board along insulating fixing part's length direction vibration, wherein the range of induction pole panel vibration is less than 1 millimeter, signal processing unit, with the induction pole board with vibrating device electricity respectively connects, is used for output control signal is with the drive the vibrating device vibration is received simultaneously the output of induction pole board the static signal, it is right output corresponds voltage signal behind the static signal processing. The utility model discloses electrostatic transducer can realize the test of continuous static, and the low signal -to -noise ratio, is convenient for lay and arranges.
Description
Technical field
This utility model relates to electrostatic detection technology field, especially relates to a kind of capacitance-type vibration formula electrostatic transducer.
Background technology
Electrostatic is a kind of general physical phenomenon, and the harm that the active force of electrostatic, electric discharge and induction cause is extremely serious, also brings great potential safety hazard enemy for Field Force, equipment in actual production is lived.Eliminate at present the method for electrostatic hazard and mainly carry out electrostatic defending and electrostatic leakage, but still cannot intuitively to understand the electrostatic charge that whether there is electrostatic and accumulation on sensitive equipment how many for people.
Electrostatic potential has again the features such as high potential, highfield, transient high-current, so electrostatic potential test is different from AC and DC potential test, it is impossible to measure with conventional voltage table.Electrostatic potential tester popular in the market mainly has contactless and contact two kinds, but existing electrostatic potential tester is fixed due to sensing pole plate, close to measured object during test, generally can only carry out single electrostatic test, test needs reset to test again, it is impossible to realize continuous print electrostatic test.It addition, existing electrostatic potential tester exists, signal to noise ratio is low, not easily the problem such as lay.
Utility model content
The purpose of this utility model is to provide a kind of capacitance-type vibration formula electrostatic transducer, to realize continuous electrostatic test.
This utility model, it is a further objective that provide a kind of capacitance-type vibration formula electrostatic transducer, solves the problems such as existing electrostatic potential tester can not be measured continuously, signal to noise ratio is low, not easily lay.
In order to solve above-mentioned technical problem, this utility model provides a kind of capacitance-type vibration formula electrostatic transducer, including sensing pole plate, insulating fixing piece, vibrating device and signal processing unit；Described sensing pole plate, for exporting electrostatic signal close to measured object sensing；Described insulating fixing piece, one end and described vibrating device are fixed, and the other end and described sensing pole plate are fixed；Described vibrating device, for driving described sensing pole plate to vibrate along the length direction of described insulating fixing piece according to control signal periodic vibration, the amplitude of wherein said induction pole panel vibration is less than 1 millimeter；Described signal processing unit, it is electrically connected with described sensing pole plate and described vibrating device, for exporting described control signal to drive described vibrating device to vibrate, receive the described electrostatic signal of described sensing pole plate output, output corresponding voltage signal after described electrostatic signal is processed simultaneously.
When this utility model is implemented, signal processing unit exports control signal to drive described vibrating device periodic vibration to drive described sensing pole plate to carry out small vibration along the length direction of described insulating fixing piece, receive the electrostatic signal of described sensing pole plate sensing output simultaneously, output corresponding voltage signal after described electrostatic signal is processed, thus realizing electrostatic test output.Due to sensing pole plate periodic vibration so that this utility model can realize online continuous acquisition and carry out electrostatic test, it is not necessary to reset, simple and convenient.
In one embodiment, described insulating fixing piece is the cylindrical columns that ABS isolation material is made, good insulating, and the installation surface reducing the impact on electrostatic test, described cylindrical columns and described vibrating device and described sensing pole plate is respectively perpendicular.Adopting the program, along the direction vibration vertical with sensing polar board surface during sensing pole plate periodic vibration, electrostatic acquisition precision is high, improves the degree of accuracy of electrostatic test.
Further, described sensing pole plate is circular sensing pole plate, rectangle sensing pole plate, triangle sensing pole plate or oval sensing pole plate.
Further, described circular sensing pole plate includes: round insulation base layer, described round insulation base layer adopts epoxy resin to make, and described round insulation base layer home position is provided with via；Signal electrode metal film, is arranged on the upper surface of described round insulation base layer；Bucking electrode metal film, it is arranged on the lower surface of described round insulation base layer, fixing with the other end of described insulating fixing piece, and described bucking electrode metal film is provided with positive terminal pad and negative terminal pad, described positive terminal pad and described bucking electrode metal film separate insulation；Described signal electrode metal film is electrically connected with described positive terminal pad by described via, and described bucking electrode metal film electrically connects with described negative terminal pad；Described positive terminal pad and negative terminal pad are connected with described signal processing unit respectively through holding wire.
Adopt such scheme, owing to the electrostatic acquisition precision of circle sensing pole plate is higher so that this utility model gathers static value and has significantly high stability and accuracy.
Further, described signal electrode metal film and the circular metal film that described bucking electrode metal film is that diameter is identical, and the diameter of this circular metal film is less than the diameter of described round insulation base layer.
In one embodiment, described signal processing unit includes wave filter, impedance transformer and the amplifier that signal connects successively；Described holding wire electrically connects with described wave filter；Described signal processing unit also includes processing unit, electrically connects with described vibrating device, is used for exporting described control signal.Adopting the program, wave filter is for filtering interference signals, and impedance transformer is used for increasing input impedance, improves signal stabilization, and described amplifier is used for amplifying faint useful signal, the final raising accuracy of detection of electrostatic transducer, stability and accuracy.
In one embodiment, the first insulating concrete cylinder installed part and the second insulating concrete cylinder installed part are also included；Described vibrating device is fixed on one end of described second insulating concrete cylinder installation portion, and the other end of described second insulating concrete cylinder installation portion is connected with described first insulating concrete cylinder installed part, and described signal processing unit is arranged in described first insulating concrete cylinder installed part.The program is adopted to be easy to the installation of this electrostatic transducer, small volume.
In one embodiment, also including metallic cylinder housing, its one end is provided with metal plug, and the other end is opening, and described metal plug is provided with communication interface；Described sensing pole plate, insulating fixing piece, vibrating device are fit in described metallic cylinder housing with signal processing unit together with described first insulating concrete cylinder installed part and the second insulating concrete cylinder installed part, described sensing pole plate is positioned at inside the open at one end of described metallic cylinder housing, and has gap between described sensing pole plate and described metallic cylinder inner walls；Described communication interface electrically connects with described signal processing unit.Adopt the program, be that electrostatic transducer has shielding shell, signal to noise ratio can be effectively improved.
Further, described metal plug offering installing hole, described communication interface is installed on described installing hole.
The beneficial effects of the utility model are: due to sensing pole plate periodic vibration in this utility model scheme so that this utility model can realize online continuous acquisition and carry out electrostatic test, it is not necessary to reset, simple and convenient.It addition, in some preferred versions, the electrostatic transducer signal to noise ratio that this utility model scheme provides is low, easily lay, accuracy of detection is high, stability and accuracy also higher.
Accompanying drawing explanation
Fig. 1 is the capacitance-type vibration formula electrostatic transducer schematic diagram shown in this utility model embodiment；
Fig. 2 is the surface structure schematic diagram sensing pole plate in this utility model embodiment；
Fig. 3 is the lower surface configuration schematic diagram sensing pole plate in this utility model embodiment；
Fig. 4 is signal processing unit theory diagram in this utility model embodiment；
Fig. 5 is capacitance-type vibration another schematic diagram of formula electrostatic transducer shown in this utility model embodiment.
Detailed description of the invention
Below in conjunction with drawings and embodiments, this utility model is further described.
Capacitance-type vibration formula electrostatic transducer as shown in Figure 1, including sensing pole plate 1, insulating fixing piece 2, vibrating device 3 and signal processing unit 4；Described sensing pole plate 1, for exporting electrostatic signal close to measured object sensing；Described insulating fixing piece 2, one end is fixed with described vibrating device 3, and the other end is fixed with described sensing pole plate 1；Described vibrating device 3, for driving described sensing pole plate 1 to vibrate along the length direction (in figure the direction of arrow) of described insulating fixing piece 2 according to control signal periodic vibration, the amplitude of wherein said sensing pole plate 1 vibration is less than 1 millimeter；Described signal processing unit 4, it is electrically connected (not shown) with described sensing pole plate 1 and described vibrating device 3, for exporting described control signal to drive described vibrating device 3 to vibrate, receive the described electrostatic signal of described sensing pole plate 1 output, output corresponding voltage signal after described electrostatic signal is processed simultaneously.
During the work of this utility model electrostatic transducer, signal processing unit 4 exports control signal to drive described vibrating device 3 periodic vibration to drive described sensing pole plate 1 to carry out the vibration of slight amplitude along the length direction of described insulating fixing piece 2, sensing pole plate 1 will sense faint electrostatic signal, electrostatic signal is sent to signal processing unit 4, signal processing unit 4 receives the electrostatic signal of described sensing pole plate 1 sensing output, output corresponding voltage signal after described electrostatic signal is processed, thus realizing electrostatic test output.Due to sensing pole plate periodic vibration so that this utility model can realize online continuous acquisition and carry out electrostatic test, it is not necessary to reset, simple and convenient.
Concrete, in one embodiment, the cylindrical columns that described insulating fixing piece 2 is made for ABS isolation material, good insulating, the installation surface reducing the impact on electrostatic test, described cylindrical columns and described vibrating device 3 and described sensing pole plate 1 is respectively perpendicular.Adopting the program, along direction (axial direction along the cylindrical columns) vibration vertical with sensing pole plate 1 surface during sensing pole plate 1 periodic vibration, electrostatic acquisition precision is high, improves the degree of accuracy of electrostatic test.
Further, described sensing pole plate 1 is circular sensing pole plate, rectangle sensing pole plate, triangle sensing pole plate or oval sensing pole plate.Can certainly be the sensing pole plate of other shapes, this is not construed as limiting.
Owing to the electrostatic acquisition precision of circle sensing pole plate is higher so that this utility model gathers static value and has significantly high stability and accuracy.The present embodiment circular sensing pole plate, referring to Fig. 2-3, described sensing pole plate 1, namely described circular sensing pole plate includes: round insulation base layer 10, described round insulation base layer 10 adopts epoxy resin to make, and described round insulation base layer 10 home position is provided with via 103；Signal electrode metal film 101, is arranged on the upper surface of described round insulation base layer 10；Bucking electrode metal film 102, it is arranged on the lower surface of described round insulation base layer 10, fix with the other end of described insulating fixing piece 2, and described bucking electrode metal film 102 is provided with positive terminal pad 105 and negative terminal pad 106, described positive terminal pad 105 separates insulation (as indentation separates, not shown) with described bucking electrode metal film 102；Described signal electrode metal film 101 electrically connects with described positive terminal pad 105 especially by the wire 104 through described via 103, and described bucking electrode metal film 102 electrically connects with described negative terminal pad 106；Described wire 104 and described bucking electrode metal film 102 separate insulation (as corrosion indentation separates, not shown)；Described positive terminal pad 105 and negative terminal pad 106 are connected with described signal processing unit 4 respectively through holding wire (not shown), as an example, described holding wire can be connected along the surface extension being fitted in described insulating fixing piece 2 and vibrating device 3 with described signal processing unit 4.Signal electrode metal film described in the present embodiment 101 is the circular metal film that diameter is identical with described bucking electrode metal film 102, and the diameter of this circular metal film is slightly less than the diameter of described round insulation base layer 10.When sensing pole plate 1 vibrates, will sensing faint electrostatic signal on the signal electrode metal film 101 of sensing pole plate 1, electrostatic signal is sent to signal processing unit 4 by the holding wire being connected with positive terminal pad 105.
Described signal electrode metal film 101, bucking electrode metal film 102 and described round insulation base layer 10 three share a center of circle, described signal electrode metal film 101 is identical and more smaller than round insulation base layer 10 radius with the radius of bucking electrode metal film 102.Sensing pole plate 1 upper and lower surface in the present embodiment and be covered with metal film, namely described signal electrode metal film 101 and bucking electrode metal film 102, be used separately as signal electrode and bucking electrode.Enough gaps are left to reach insulation between positive terminal pad 105 and metallic circuit (i.e. wire 104) and bucking electrode.Signal electrode and signal electrode metal film 101 are used for sensing electrostatic signal, bucking electrode and bucking electrode metal film 102 and are connected to ground, provide function of shielding for signal electrode, increase the capacity of resisting disturbance of induced signal.
In one embodiment, referring to Fig. 4, described signal processing unit 4 includes wave filter, impedance transformer and the amplifier that signal connects successively；Described holding wire (not shown) electrically connects with described wave filter；Described signal processing unit 4 also includes processing unit (not shown), electrically connects with described vibrating device 3, is used for exporting described control signal (such as sinusoidal drive signals).Adopt the program, wave filter is used for the interference signal filtering in the electrostatic signal received, and impedance transformer is used for increasing input impedance, improves signal stabilization, described amplifier is used for amplifying faint useful signal, the final raising accuracy of detection of electrostatic transducer, stability and accuracy.
In one embodiment, referring again to Fig. 1, this electrostatic transducer also includes the first insulating concrete cylinder installed part 5 and the second insulating concrete cylinder installed part 6；Described vibrating device 3 is fixed on one end of described second insulating concrete cylinder installed part 6, the other end of described second insulating concrete cylinder installed part 6 is connected with described first insulating concrete cylinder installed part 5, in the present embodiment, both the first insulating concrete cylinder installed part 5 and the second insulating concrete cylinder installed part 6 are threaded by built-in screw 501, can certainly be that other connect fixed form, this is not limited as.Described signal processing unit 4 is arranged in described first insulating concrete cylinder installed part 5.The program is adopted to be easy to the installation of this electrostatic transducer, it is simple to arrange and install, small volume.
In one embodiment, referring to Fig. 5, this electrostatic transducer also includes metallic cylinder housing 7, and its one end is provided with metal plug 8, and the other end is opening, and described metal plug 8 is provided with communication interface 9；Described sensing pole plate 1, insulating fixing piece 2, vibrating device 3 with signal processing unit 4 along with described first insulating concrete cylinder installed part 5 is fit in described metallic cylinder housing 7 together with the second insulating concrete cylinder installed part 6, described sensing pole plate 1 is positioned at inside the open at one end of described metallic cylinder housing 7, and has gap between described sensing pole plate 1 and described metallic cylinder housing 7 inwall；Described communication interface 9 electrically connects (as wire is connected, not shown) with described signal processing unit 4.Described first insulating concrete cylinder installed part 5 and the second insulating concrete cylinder installed part 6 fit in sensor housing and described metallic cylinder housing 7 inwall; signal processing unit 4 and fixing vibrating device 3 can be protected; and the employing program, make electrostatic transducer have shielding shell, signal to noise ratio can be effectively improved.
Further, described metal plug 8 offering installing hole (not shown), described communication interface 9 is installed on described installing hole.Described communication interface 9 is used for carrying out data transmission.By wire, signal processing unit 4 and communication interface 9 are attached, provide power path and signal path for signal processing unit 4 by outside.In one example, the driving signal of vibrating device is input to signal processing unit 4 by communication interface 9, it is made to vibrate in a predetermined manner by output after processing unit processes therein to vibrating device 3, dynamic answers pole plate 1 to vibrate according to the same manner further, the signal electrode metal film 101 of sensing pole plate 1 will sense faint electrostatic signal, electrostatic signal is sent to signal processing unit 4 by the holding wire being connected with positive terminal pad 105, by arriving peripheral hardware again through communication interface 9 output after a series of process such as filtering, impedance transformation and amplification.
Due to sensing pole plate periodic vibration in this utility model scheme so that this utility model can realize online continuous acquisition and carry out electrostatic test, it is not necessary to reset, simple and convenient.It addition, in some preferred versions, the electrostatic transducer signal to noise ratio that this utility model scheme provides is low, easily lay, accuracy of detection is high, stability and accuracy also higher.
Above this this utility model being described in detail, this principle of the present utility model and embodiment are set forth by specific case used herein.The explanation of above example is only intended to help and understands this core concept of the present utility model；Simultaneously for one of ordinary skill in the art, according to this thought of the present utility model, all will change in specific embodiments and applications, in sum, this specification content should not be construed as this restriction of the present utility model.
Claims (9)
1. a capacitance-type vibration formula electrostatic transducer, it is characterised in that include sensing pole plate, insulating fixing piece, vibrating device and signal processing unit；
Described sensing pole plate, for exporting electrostatic signal close to measured object sensing；
Described insulating fixing piece, one end and described vibrating device are fixed, and the other end and described sensing pole plate are fixed；
Described vibrating device, for driving described sensing pole plate along described according to control signal periodic vibration
The length direction vibration of insulating fixing piece, the amplitude of wherein said induction pole panel vibration is less than 1 millimeter；
Described signal processing unit, it is electrically connected with described sensing pole plate and described vibrating device, for exporting described control signal to drive described vibrating device to vibrate, receive the described electrostatic signal of described sensing pole plate output, output corresponding voltage signal after described electrostatic signal is processed simultaneously.
2. capacitance-type vibration formula electrostatic transducer according to claim 1, it is characterised in that described insulating fixing piece is the cylindrical columns that ABS isolation material is made, the installation surface of described cylindrical columns and described vibrating device and described sensing pole plate is respectively perpendicular.
3. capacitance-type vibration formula electrostatic transducer according to claim 2, it is characterised in that described sensing pole plate is circular sensing pole plate, rectangle sensing pole plate, triangle sensing pole plate or oval sensing pole plate.
4. capacitance-type vibration formula electrostatic transducer according to claim 3, it is characterised in that described circular sensing pole plate includes:
Round insulation base layer, described round insulation base layer adopts epoxy resin to make, and described round insulation base layer home position is provided with via；
Signal electrode metal film, is arranged on the upper surface of described round insulation base layer；
Bucking electrode metal film, it is arranged on the lower surface of described round insulation base layer, fixing with the other end of described insulating fixing piece, and described bucking electrode metal film is provided with positive terminal pad and negative terminal pad, described positive terminal pad and described bucking electrode metal film separate insulation；
Described signal electrode metal film is electrically connected with described positive terminal pad by described via, and described bucking electrode metal film electrically connects with described negative terminal pad；
Described positive terminal pad and negative terminal pad are connected with described signal processing unit respectively through holding wire.
5. capacitance-type vibration formula electrostatic transducer according to claim 4, it is characterized in that, described signal electrode metal film and the circular metal film that described bucking electrode metal film is that diameter is identical, and the diameter of this circular metal film is less than the diameter of described round insulation base layer.
6. capacitance-type vibration formula electrostatic transducer according to claim 4, it is characterised in that described signal processing unit includes wave filter, impedance transformer and the amplifier that signal connects successively；Described holding wire electrically connects with described wave filter；Described signal processing unit also includes processing unit, electrically connects with described vibrating device, is used for exporting described control signal.
7. capacitance-type vibration formula electrostatic transducer according to claim 6, it is characterised in that also include the first insulating concrete cylinder installed part and the second insulating concrete cylinder installed part；
Described vibrating device is fixed on one end of described second insulating concrete cylinder installation portion, and the other end of described second insulating concrete cylinder installation portion is connected with described first insulating concrete cylinder installed part, and described signal processing unit is arranged in described first insulating concrete cylinder installed part.
8. capacitance-type vibration formula electrostatic transducer according to claim 7, it is characterised in that also including metallic cylinder housing, its one end is provided with metal plug, and the other end is opening, and described metal plug is provided with communication interface；Described sensing pole plate, insulating fixing piece, vibrating device are fit in described metallic cylinder housing with signal processing unit together with described first insulating concrete cylinder installed part and the second insulating concrete cylinder installed part, described sensing pole plate is positioned at inside the open at one end of described metallic cylinder housing, and has gap between described sensing pole plate and described metallic cylinder inner walls；Described communication interface electrically connects with described signal processing unit.
9. capacitance-type vibration formula electrostatic transducer according to claim 8, it is characterised in that offering installing hole on described metal plug, described communication interface is installed on described installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077005.9U CN205353223U (en) | 2016-01-26 | 2016-01-26 | Vibration capacitanc electrostatic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077005.9U CN205353223U (en) | 2016-01-26 | 2016-01-26 | Vibration capacitanc electrostatic transducer |
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| Publication Number | Publication Date |
|---|---|
| CN205353223U true CN205353223U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620077005.9U Withdrawn - After Issue CN205353223U (en) | 2016-01-26 | 2016-01-26 | Vibration capacitanc electrostatic transducer |
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| CN (1) | CN205353223U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527505A (en) * | 2016-01-26 | 2016-04-27 | 王德言 | Vibration capacitance type electrostatic sensor |
| CN109856467A (en) * | 2019-03-20 | 2019-06-07 | 西安邮电大学 | A kind of static electricity on human body's measuring device |
-
2016
- 2016-01-26 CN CN201620077005.9U patent/CN205353223U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527505A (en) * | 2016-01-26 | 2016-04-27 | 王德言 | Vibration capacitance type electrostatic sensor |
| CN105527505B (en) * | 2016-01-26 | 2018-12-18 | 王雪颖 | A kind of capacitance-type vibration formula electrostatic transducer |
| CN109856467A (en) * | 2019-03-20 | 2019-06-07 | 西安邮电大学 | A kind of static electricity on human body's measuring device |
| CN109856467B (en) * | 2019-03-20 | 2023-09-15 | 西安邮电大学 | A kind of human body electrostatic measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170125 Address after: 610000 Sichuan, Chengdu, Chenghua District, South Building, No. two, building 8, building 3, unit 3, building 1, No. Patentee after: Wang Xueying Address before: Tianyu 611731 Chengdu Road, Sichuan province high tech Zone No. 19 Patentee before: Wang Deyan |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20181218 |