CN108444570A - A kind of resonant mode liquid level emasuring device - Google Patents
A kind of resonant mode liquid level emasuring device Download PDFInfo
- Publication number
- CN108444570A CN108444570A CN201810329229.8A CN201810329229A CN108444570A CN 108444570 A CN108444570 A CN 108444570A CN 201810329229 A CN201810329229 A CN 201810329229A CN 108444570 A CN108444570 A CN 108444570A
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- China
- Prior art keywords
- hole
- auxiliary electrode
- electrode
- liquid level
- fixed seat
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention relates to level measuring instrument design fields, disclose a kind of resonant mode liquid level emasuring device, including three hole pedestals and the upper cover plate being interlocked with three hole pedestals, the groove body of through-hole and accommodating fixed seat is offered on the three hole pedestals, the cavity containing through-hole is processed in fixed seat, vibrating reed is sequentially placed in cavity from bottom to up, lower electrode, piezoelectric element and top electrode, lower electrode is overlapped with lower auxiliary electrode, top electrode and upper auxiliary electrode overlap joint, fixed seat is fastened with upper cover plate and is sealed, lower auxiliary electrode and upper auxiliary electrode are respectively connected to signal generator and carry out frequency sweep processing, signal generator is electrically connected with frequency spectrograph.By designing a detector with piezoelectric element, in conjunction with the measurement analysis resonated to the detector, the measurement to liquid quality to be measured may be implemented, and then calculate the liquid level of testing liquid in the present apparatus.
Description
Technical field
The present invention relates to level measuring instrument design fields, more particularly to a kind of resonant mode liquid level emasuring device.
Background technology
In the prior art, the measuring instrument and measurement method of liquid level are varied, are most intuitively external transparent
Altimeter can intuitively see the height of liquid, and certainly, use is there are limitation, the observation for small-sized low liquid level, meat
Eye often can not directly judge, in addition, for some need high leakproofness and can not layout designs device end prepare liquid
For body, since the intuitive survey tool such as altimeter can not be used, it is necessary to which some sensors pass through itself work(of sensor
Can, the parameters such as liquid level are become into electric signal, indirect interpretive analysis goes out liquid level numerical value.However, aforesaid operations are inaccurate there is also measuring,
The shortcoming of complex structural designs, needs further improvement.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of resonant mode liquid level emasuring device, the devices
Structure design is unique, and each element combination using effect is good, and final measurement is accurate, and practical application effect is good.
In order to achieve the above object, the technical solution adopted by the present invention is：A kind of resonant mode liquid level emasuring device, including three
Hole pedestal and the upper cover plate being interlocked with three hole pedestals offer the slot of through-hole and accommodating fixed seat on the three hole pedestals
Body processes the cavity containing through-hole in fixed seat, be sequentially placed from bottom to up in cavity vibrating reed, lower electrode, piezoelectric element and
Top electrode, lower electrode are overlapped with lower auxiliary electrode, and top electrode and upper auxiliary electrode overlap joint, fixed seat are fastened with upper cover plate and sealed,
Lower auxiliary electrode and upper auxiliary electrode are respectively connected to signal generator and carry out frequency sweep processing, and signal generator is electrically connected with frequency spectrograph
It connects.
Further, the step of three hole as described above pedestal is equipped with limited post.
Further, limited post as described above is each passed through lower auxiliary electrode and upper auxiliary electrode.
Further, the matching size of the limit hole of limited post and upper cover plate as described above closes.
Further, the through-hole in fixed seat cavity as described above is matched with the clear size of opening on three hole pedestals.
Further, the cavity both sides of fixed seat as described above are machined with shallow slot, place lower electrode in the shallow slot respectively
With lower auxiliary electrode lap and top electrode and upper auxiliary electrode lap.
Compared with prior art, the beneficial effects of the invention are as follows：The present apparatus is by designing a detection with piezoelectric element
In conjunction with the measurement analysis resonated to the detector measurement to liquid quality to be measured may be implemented, and then calculate prepare liquid in device
The liquid level of body, the panel detector structure is ingenious in design, and assembly and disassembly are replaced convenient.
Description of the drawings
Fig. 1 is the decomposition diagram of the present invention；
Fig. 2 is the annexation figure of the present invention.
Label in attached drawing be：1. three hole pedestals；2. fixed seat；Auxiliary electrode on 3.；4. top electrode；5. piezoelectric element；
6. lower electrode；7. lower auxiliary electrode；8. vibrating reed.
Specific implementation mode
It is described in detail with reference to attached drawing with reference to embodiment, to be carried out more to technical characteristic and advantage of the invention
Deep annotation.
As shown in Figs. 1-2, a kind of resonant mode liquid level emasuring device of the invention, including three hole pedestals 1 and with three hole pedestals 1
The upper cover plate being interlocked offers the groove body of through-hole and accommodating fixed seat 2 on the three hole pedestals 1, processes and contain in fixed seat 2
There is the cavity of through-hole, is sequentially placed vibrating reed 8, lower electrode 6, piezoelectric element 5 and top electrode 4, lower electrode 6 in cavity from bottom to up
It is overlapped with lower auxiliary electrode 7, top electrode 4 and upper auxiliary electrode 3 overlap, and fixed seat 2 is fastened with upper cover plate and sealed, it is ensured that liquid is not
It can penetrate into piezoelectric element 5, lower auxiliary electrode 7 and upper auxiliary electrode 3 are respectively connected to signal generator and carry out frequency sweep processing, letter
Number generator is electrically connected with frequency spectrograph and the signal that frequency sweep obtains is measured and handled, and signal generator model is selected
DG5101, frequency spectrograph model DSA815.
Further, the step of the three hole pedestals 1 is equipped with limited post, and the limited post is each passed through lower auxiliary
The matching size of the limit hole of electrode 7 and upper auxiliary electrode 3, the limited post and upper cover plate closes, 2 cavity of fixed seat
In through-hole matched with the clear size of opening on three hole pedestals 1, the cavity both sides of the fixed seat 2 are machined with shallow slot, this is shallow
Lower electrode 6 and lower 7 lap of auxiliary electrode and top electrode 4 and 3 lap of upper auxiliary electrode are placed in slot respectively.
Further, the vibrating reed 8 is using quartz crystal and only bottom is contacted by through-hole with liquid, described
The material of lower electrode 6 and top electrode 4 is aluminium, and prepares aluminium film, 3 He of upper auxiliary electrode using the method for vacuum evaporation
Lower auxiliary electrode 7 is aluminum slice, and the piezoelectric element 5 is piezoelectric ceramic piece.
Apparatus of the present invention give the concrete structure design of liquid level emasuring device, by the way that the device is placed in liquid, by
In the difference of liquid level, the pumping signal that vibrating reed 8 is subject to also differs, using inverse piezoelectric effect, top electrode 4, piezoelectric element 5,
Lower electrode 6 and vibrating reed 8 are since assembly relation vibrates jointly, and amplitude when reaching intrinsic frequency is maximum, due to liquid level
Difference, it is known that liquid is contacted with vibrating reed 8 can change its equivalent mass, to influence its intrinsic frequency, pass through measure vibration
The different resonant condition of piece 8 can analyze the liquid level for obtaining liquid from spectrogram.
In apparatus of the present invention, electrode, piezoelectric element 5 and vibrating reed 8 etc. are the prior art or material, affiliated technology people
Member can directly buy from market or tailor-made according to required product type and specification.
Clear, complete description is carried out to the present invention by the technical solution in above example, it is clear that described reality
The embodiment that example is a present invention part is applied, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
Claims (6)
1. a kind of resonant mode liquid level emasuring device, which is characterized in that including three hole pedestals（1）With with three hole pedestals（1）It is interlocked
Upper cover plate, the three hole pedestals（1）On offer through-hole and accommodating fixed seat（2）Groove body, fixed seat（2）Middle processing contains
There is the cavity of through-hole, vibrating reed is sequentially placed from bottom to up in cavity（8）, lower electrode（6）, piezoelectric element（5）And top electrode
（4）, lower electrode（6）With lower auxiliary electrode（7）Overlap joint, top electrode（4）With upper auxiliary electrode（3）Overlap joint, fixed seat（2）With upper cover
Plate fastens sealing, lower auxiliary electrode（7）With upper auxiliary electrode（3）It is respectively connected to signal generator and carries out frequency sweep processing, signal hair
Raw device is electrically connected with frequency spectrograph.
2. a kind of resonant mode liquid level emasuring device according to claim 1, which is characterized in that the three hole pedestals（1）
Step be equipped with limited post.
3. a kind of resonant mode liquid level emasuring device according to claim 2, which is characterized in that the limited post is worn respectively
Cross down auxiliary electrode（7）With upper auxiliary electrode（3）.
4. a kind of resonant mode liquid level emasuring device according to claim 3, which is characterized in that the limited post and upper cover
The matching size of the limit hole of plate closes.
5. a kind of resonant mode liquid level emasuring device according to claim 4, which is characterized in that the fixed seat（2）It is empty
Through-hole in chamber and three hole pedestals（1）On clear size of opening match.
6. a kind of resonant mode liquid level emasuring device according to claim 5, which is characterized in that the fixed seat（2）'s
Cavity both sides are machined with shallow slot, place lower electrode in the shallow slot respectively（6）With lower auxiliary electrode（7）Lap and top electrode
（4）With upper auxiliary electrode（3）Lap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329229.8A CN108444570A (en) | 2018-04-13 | 2018-04-13 | A kind of resonant mode liquid level emasuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329229.8A CN108444570A (en) | 2018-04-13 | 2018-04-13 | A kind of resonant mode liquid level emasuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108444570A true CN108444570A (en) | 2018-08-24 |
Family
ID=63199837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810329229.8A Pending CN108444570A (en) | 2018-04-13 | 2018-04-13 | A kind of resonant mode liquid level emasuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108444570A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274645A (en) * | 1999-05-20 | 2000-11-29 | 精工爱普生株式会社 | Liquid detecting piezoelectric device, liquid container and mounting module body thereof |
| CN1799845A (en) * | 2004-12-13 | 2006-07-12 | 精工爱普生株式会社 | Container having liquid detecting function |
| FR2930033A1 (en) * | 2008-04-14 | 2009-10-16 | Commissariat Energie Atomique | DEVICE AND METHOD FOR DETECTING ELEMENTS IN A FLUIDIC ENVIRONMENT |
| CN103389142A (en) * | 2013-07-09 | 2013-11-13 | 珠海市晶芯有限公司 | Sensor for measuring ink amount in ink box and ink box |
| CN207991642U (en) * | 2018-04-13 | 2018-10-19 | 东莞理工学院 | A kind of resonant mode liquid level emasuring device |
-
2018
- 2018-04-13 CN CN201810329229.8A patent/CN108444570A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274645A (en) * | 1999-05-20 | 2000-11-29 | 精工爱普生株式会社 | Liquid detecting piezoelectric device, liquid container and mounting module body thereof |
| CN1799845A (en) * | 2004-12-13 | 2006-07-12 | 精工爱普生株式会社 | Container having liquid detecting function |
| FR2930033A1 (en) * | 2008-04-14 | 2009-10-16 | Commissariat Energie Atomique | DEVICE AND METHOD FOR DETECTING ELEMENTS IN A FLUIDIC ENVIRONMENT |
| CN103389142A (en) * | 2013-07-09 | 2013-11-13 | 珠海市晶芯有限公司 | Sensor for measuring ink amount in ink box and ink box |
| CN207991642U (en) * | 2018-04-13 | 2018-10-19 | 东莞理工学院 | A kind of resonant mode liquid level emasuring device |
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