CN112304390A - Induction capacitor of liquid level sensor based on flexible substrate - Google Patents
Induction capacitor of liquid level sensor based on flexible substrate Download PDFInfo
- Publication number
- CN112304390A CN112304390A CN202011297167.0A CN202011297167A CN112304390A CN 112304390 A CN112304390 A CN 112304390A CN 202011297167 A CN202011297167 A CN 202011297167A CN 112304390 A CN112304390 A CN 112304390A
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- installing zone
- electrode
- liquid level
- substrate layer
- flexible substrate
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- 239000000758 substrate Substances 0.000 title claims abstract description 27
- 239000003990 capacitor Substances 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 title abstract description 15
- 230000006698 induction Effects 0.000 title abstract description 6
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 230000001939 inductive effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- 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
- G01F23/26—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (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 invention discloses an induction capacitor of a liquid level sensor based on a flexible substrate, which comprises: the electrode layer comprises a substrate layer, first installing zone and second installing zone have been seted up on the substrate layer, first installing zone with the interval of second installing zone sets up, and equal rigid coupling has the electrode layer in first installing zone and the second installing zone, the first electrode of electrode level in the first installing zone, the electrode layer in the second installing zone is the second electrode. According to the invention, the application range of the non-contact capacitive sensor for liquid level detection is widened, the reliability in measurement is improved, and the sensor is tightly attached to the outer wall of a measured object.
Description
Technical Field
The invention relates to the technical field of inductive capacitors, in particular to an inductive capacitor of a liquid level sensor based on a flexible substrate.
Background
A non-contact capacitive sensor for level detection arranges the electric capacity polar plate on the plane PCB board of stereoplasm mostly, need guarantee during the use that induction capacitance closely laminates at the container outer wall that awaits measuring, however the stock solution container among the practical application is arc face shapes such as the cylinder of often becoming, circular cone, this moment, non-contact level sensor that the stereoplasm PCB board was made is difficult to closely laminate with the outer wall of stock solution container, this makes non-contact capacitive sensor receive the limitation with application scene on the accuracy of detection container liquid level.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the induction capacitor of the liquid level sensor based on the flexible substrate, broadens the application range of the non-contact capacitor type sensor for liquid level detection, improves the reliability in measurement and is tightly attached to the outer wall of a measured object. To achieve the above objects and other advantages in accordance with the present invention, there is provided an inductive capacitance of a flexible substrate based level sensor, comprising:
the electrode layer comprises a substrate layer, first installing zone and second installing zone have been seted up on the substrate layer, first installing zone with the interval of second installing zone sets up, and equal rigid coupling has the electrode layer in first installing zone and the second installing zone, the first electrode of electrode level in the first installing zone, the electrode layer in the second installing zone is the second electrode.
Preferably, the first installation area and the second installation area are both right-angled triangles, and the hypotenuse of the first installation area is opposite to the hypotenuse of the second installation area.
Preferably, the substrate layer is a flexible plate.
Preferably, the shape of the substrate layer is planar or arc-shaped.
Compared with the prior art, the invention has the beneficial effects that: and arranging the first electrode and the second electrode of the capacitor on a flexible substrate layer, and replacing the original rigid plate with the flexible substrate layer. According to the characteristics of the substrate layer, the problems that the rigid plate cannot be completely attached to the outer wall of the detection device and the like are well solved, the detection precision is guaranteed, the liquid level capacitive sensor has a wider detection range, the coplanar non-contact capacitive sensor manufactured through the substrate layer has the characteristics of small size and light weight, the mounting and the dismounting are convenient, and the manufacturing cost of production is reduced.
Drawings
FIG. 1 is a front view of the sensing capacitance for a non-contact level capacitive sensor according to the present invention;
FIG. 2 is a schematic diagram of a three-dimensional structure of a sensing capacitor for a non-contact capacitive level sensor according to the present invention.
In the figure: 1. a substrate layer; 2. a first electrode; 3. a second electrode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an inductive capacitance of a flexible substrate based level sensor includes: substrate layer 11, first installing zone and second installing zone have been seted up on substrate layer 1, first installing zone with the second installing zone interval sets up, and equal rigid coupling has the electrode layer in first installing zone and the second installing zone, the first electrode of electrode level 2 in the first installing zone, the electrode layer in the second installing zone is second electrode 3, substrate layer 1 is flexible panel, can closely laminate completely in square, the circular arc shape waits for to survey the container outer wall to the change of liquid level in the response container wall avoids causing the pollution or corrosion sensor scheduling problem with the liquid contact in the container, can the real-time liquid level state in the nonmetal airtight container of accurate measurement, can wide application in liquid level on-line monitoring field.
Further, first installing zone and second installing zone are right triangle, the hypotenuse of first installing zone with the second installing zone hypotenuse sets up relatively, forms two electrodes like this and can connect in electrically conductive interface, is connected with the ware original paper through electrically conductive interface, also conveniently changes when damaging, and need not wholly change, has improved this non-contact's liquid level capacitance sensor rate of utilization.
Furthermore, the defect that a capacitor plate is arranged on a hard planar PCB to lead the capacitor to be bent and attached to the outer wall of the container to be tested is eliminated, two electrode plates of the capacitor are designed on the same plane of the flexible circuit board, and a circuit conversion module which generates different capacitance values to pass through according to the change of solution in a tested area is converted into a change value of a corresponding liquid level.
Further, the shape of substrate layer 1 is plane or arc form, replaces original rigid plate with flexible panel, utilizes its high compliance, strengthens the equipment of three-dimensional space in limited space, realizes the integration of components and parts assembly and wire connection. In the design and processing process, because the welding points are reduced, the number of connectors is reduced, and the failure occurrence rate and the production cost are reduced. In installation and use, can freely bend, coil so that closely laminate the container outer wall that awaits measuring, solved the unable crooked problem in order to laminate in cylindrical container wall of induction capacitance that the rigid plate spread conductive metal and make, improve the credibility of product, effectively reduce product volume and weight simultaneously, increase convenience and the reuse nature in carrying and the use.
The number of devices and the scale of the processes described herein are intended to simplify the description of the invention, and applications, modifications and variations of the invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (4)
1. An inductive capacitance for a flexible substrate based level sensor, comprising:
the electrode layer comprises a substrate layer, first installing zone and second installing zone have been seted up on the substrate layer, first installing zone with the interval of second installing zone sets up, and equal rigid coupling has the electrode layer in first installing zone and the second installing zone, the first electrode of electrode level in the first installing zone, the electrode layer in the second installing zone is the second electrode.
2. The sensor capacitor of claim 1, wherein the first mounting region and the second mounting region are each a right triangle, and the oblique side of the first mounting region is opposite to the oblique side of the second mounting region.
3. The sensor capacitor of claim 1, wherein the substrate layer is a flexible sheet.
4. The sensor capacitor of claim 1, wherein the substrate layer is planar or arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011297167.0A CN112304390A (en) | 2020-11-18 | 2020-11-18 | Induction capacitor of liquid level sensor based on flexible substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011297167.0A CN112304390A (en) | 2020-11-18 | 2020-11-18 | Induction capacitor of liquid level sensor based on flexible substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112304390A true CN112304390A (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011297167.0A Pending CN112304390A (en) | 2020-11-18 | 2020-11-18 | Induction capacitor of liquid level sensor based on flexible substrate |
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| Country | Link |
|---|---|
| CN (1) | CN112304390A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6490920B1 (en) * | 1997-08-25 | 2002-12-10 | Millennium Sensors Ltd. | Compensated capacitive liquid level sensor |
| JP2013167651A (en) * | 2013-06-06 | 2013-08-29 | Kameoka Denshi Kk | Capacitance type liquid surface level sensor |
| CN205748545U (en) * | 2016-05-11 | 2016-11-30 | 深圳市星科创科技有限公司 | A kind of external labeling type pipeline liquid level sensor |
| CN107787233A (en) * | 2015-04-16 | 2018-03-09 | 赛诺菲-安万特德国有限公司 | For determining the sensor and sensor cluster of fill level by capacitance method |
| CN111595413A (en) * | 2020-06-23 | 2020-08-28 | 桂林电子科技大学信息科技学院 | Non-contact type container liquid level measuring device and method |
| CN211756148U (en) * | 2019-12-31 | 2020-10-27 | 上海理工大学 | Automatic atomizing and lubricating device for gynecological instrument based on Arduino |
| CN213932734U (en) * | 2020-11-18 | 2021-08-10 | 上海理工大学 | Induction capacitor of liquid level sensor based on flexible substrate |
-
2020
- 2020-11-18 CN CN202011297167.0A patent/CN112304390A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6490920B1 (en) * | 1997-08-25 | 2002-12-10 | Millennium Sensors Ltd. | Compensated capacitive liquid level sensor |
| JP2013167651A (en) * | 2013-06-06 | 2013-08-29 | Kameoka Denshi Kk | Capacitance type liquid surface level sensor |
| CN107787233A (en) * | 2015-04-16 | 2018-03-09 | 赛诺菲-安万特德国有限公司 | For determining the sensor and sensor cluster of fill level by capacitance method |
| CN205748545U (en) * | 2016-05-11 | 2016-11-30 | 深圳市星科创科技有限公司 | A kind of external labeling type pipeline liquid level sensor |
| CN211756148U (en) * | 2019-12-31 | 2020-10-27 | 上海理工大学 | Automatic atomizing and lubricating device for gynecological instrument based on Arduino |
| CN111595413A (en) * | 2020-06-23 | 2020-08-28 | 桂林电子科技大学信息科技学院 | Non-contact type container liquid level measuring device and method |
| CN213932734U (en) * | 2020-11-18 | 2021-08-10 | 上海理工大学 | Induction capacitor of liquid level sensor based on flexible substrate |
Non-Patent Citations (2)
| Title |
|---|
| CHEN YUANXUN: "High-Performan ce and Breathable Polypyrrole Coated Air-Laid Paper for Flexible All-Solid-State Supercapacitors", ADVANCED ENERGY MATERIALS, vol. 7, no. 21, 8 November 2017 (2017-11-08) * |
| 马靖雯: "集成式微量液体 精确加样模块的研究", 中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑, no. 02, 15 February 2020 (2020-02-15) * |
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