CN2572338Y - Bubble electric resistance type levelness sensor - Google Patents
Bubble electric resistance type levelness sensor Download PDFInfo
- Publication number
- CN2572338Y CN2572338Y CN 02260684 CN02260684U CN2572338Y CN 2572338 Y CN2572338 Y CN 2572338Y CN 02260684 CN02260684 CN 02260684 CN 02260684 U CN02260684 U CN 02260684U CN 2572338 Y CN2572338 Y CN 2572338Y
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- bubble
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- closed container
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Abstract
The utility model relates to an air-bubble resistance-type levelness sensor, which belongs to the field of instruments and meters. The utility model mainly comprises a closed container, a conducting liquid, an air bubble and electrode films, wherein, the conducting liquid is filled in the inner cavity of the closed container; air in the inner cavity forms the air bubble both sides of the inner cavity are coated with the electrode films. The utility model has the advantages of high precision, wide measuring range, long service life, stable and reliable performance, simple structure, small size, light weight and good corresponding property of frequency, and meanwhile, the utility model can work normally under the severe conditions of high temperature, low temperature, high pressure, intense vibration, strong magnetic fields, nuclear radiation, chemical corrosion, etc.
Description
Technical field
This reality is novel, and what relate to is a kind of sensor device, and particularly a kind of bubble resistance-type levelness sensor belongs to instrument field.
Background technology
Automated information all will obtain by sensor, and be converted to the electric signal of easy transmission and processing by it, the effect of levelness sensor is that it can be the levelness situation of object with voltage (or electric current, resistance, electric capacity) form shows, find through the literature search to prior art: the patent No. is 94212521.5, patent name: the utility model patent of bubble condenser type levelness sensor, this sensor construction is simple, easy to use, but exist serious defective, mainly show as: 1, temperature is to the influence of physical dimension, the change of environment temperature will cause the variation of each part geometry size of capacitance type sensor and mutual geometric position, thereby cause capacitance type sensor to produce temperature error.2, temperature is to the influence of medium specific inductive capacity, the capacitance of sensor is directly proportional with the specific inductive capacity of medium, therefore if the non-vanishing temperature coefficient of the specific inductive capacity of medium (in this sensor, the fluid temperature coefficient of level is non-vanishing) just must cause the variation of sensor capacitance value, thus cause Additional temperature error.3, the influence of edge effect and parasitic parameter, edge effect makes designing and calculating complicated, produces sensitivity non-linear and the reduction sensor; The influence of capacitance type sensor measuring system parasitic parameter mainly is meant the influence of the electric capacity in parallel with the sensor capacitance pole plate, because the sensor capacitance value is very little, often stray capacitance is much bigger, and capacitive transducer can not be used.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, a kind of bubble resistance-type levelness sensor is provided, make it on the basis of adopting advanced diaphragm type strain electrode and resistance-type measuring method, avoided the adverse consequences of bringing to measurement because of environment temperature.The utility model is achieved through the following technical solutions, mainly comprise: closed container, conducting liquid, bubble and electrode film (4), (5), (6), (7), (8), conducting liquid fills the closed container inner chamber, air in the chamber forms a bubble, the both sides of inner chamber are coated with electrode film (4), (5), (6), (7), (8), wherein membrane electrode (4) is as the public input end or the output terminal of system, membrane electrode (5), (8), be the spacing electrode of sensor, be used to control the maximum range of sensor.The potential difference (PD) of membrane electrode (6) and (7) has reflected the levelness situation of testee indirectly.Closed container is made by insulating material.
The utility model is mainly by being transformed into the position angle of object resistance correspondingly, convert to through metering circuit again and be convenient to voltage (or electric current) signal that transmits and write down, a closed container made from insulating material is arranged on the structure, container intracavity has filled the conducting liquid that accounts for most of volume, and the air that leaves a constant volume forms a bubble, the both sides of inner chamber are coated with electrode film, one side is as the input pole plate of system, opposite side is the derivation pole plate of system, wherein derives the maximum range of the limited potential electrode film in both sides of end with control system.The electrode of sensor and external circuit are interrelated, liquid is automatic horizontal under action of gravity, disturbed by bubble, the contact area of liquid and each membrane electrode changes, this variation shows with signal by control system, it has truly reflected the vergence direction and the degree of testee, thereby can come the levelness of accurate positioning object by the contact area that changes liquid and film.
During Measuring Object, sensor is placed on the reference plane of object, gravitate, bubble can move along wall and change the contact area of conducting liquid and pole plate.When testee was in horizontality, bubble was positioned at the central authorities upper end of container, and conducting liquid equates that with two output pole plate contacts area the impedance of sensor two ends output terminal equates; When testee during with an angle tilt, bubble departs from container central authorities and tends to a certain end, be subjected to aeration, the electrode film of this end and the contact area of conducting liquid reduce, its output resistance becomes big, the other end causes its impedance to reduce owing to electrode film and conducting liquid contact area increase, the variation of impedance shows with voltage form through metering circuit, thereby can differentiate object tilt direction and degree accurately by central control unit, the spacing electrode film of both sides then is a maximum range of having controlled sensor, avoided because of the sensor angle deviating is excessive can't indicating value, further standard operating process.
The utlity model has 1) precision height, measurement range be wide; 2) long service life, stable and reliable for performance; 3) simple in structure, size is little, in light weight; 4) the frequency individual features is good, can be under mal-conditions such as high temperature, low temperature, high pressure, judder, high-intensity magnetic field nuclear radiation and chemical corrosion operate as normal.
Description of drawings
Fig. 1 the utility model structural representation
Embodiment
As shown in Figure 1, the utility model mainly comprises: closed container (1), conducting liquid (2), bubble (3) and electrode film (4), (5), (6), (7), (8), conducting liquid (2) fills closed container (1) inner chamber, air in the chamber forms a bubble (3), the both sides of inner chamber are coated with electrode film (4), (5), (6), (7), (8), wherein membrane electrode (4) is the public input end or the output terminal of system, membrane electrode (5), (8) are the spacing electrode of sensor, and closed container (1) is made by insulating material.
Claims (3)
1, a kind of bubble resistance-type levelness sensor, mainly comprise: closed container (1), conducting liquid (2), bubble (3), it is characterized in that also comprising: electrode film (4), (5), (6), (7), (8), conducting liquid (2) fills closed container (1) inner chamber, air in the chamber forms a bubble (3), the both sides of inner chamber are coated with electrode film (4), (5), (6), (7), (8)
2, this bubble resistance-type levelness sensor according to claim 1 is characterized in that membrane electrode (4) is the public input end or the output terminal of system, and membrane electrode (5), (8) are the spacing electrode of sensor.
3, this bubble resistance-type levelness sensor according to claim 1 is characterized in that closed container (1) made by insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260684 CN2572338Y (en) | 2002-10-15 | 2002-10-15 | Bubble electric resistance type levelness sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260684 CN2572338Y (en) | 2002-10-15 | 2002-10-15 | Bubble electric resistance type levelness sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2572338Y true CN2572338Y (en) | 2003-09-10 |
Family
ID=33727677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02260684 Expired - Fee Related CN2572338Y (en) | 2002-10-15 | 2002-10-15 | Bubble electric resistance type levelness sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2572338Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180901A (en) * | 2015-10-07 | 2015-12-23 | 湖南科技学院 | Spherical capacitive plane level detection sensor |
| CN110186425A (en) * | 2019-06-28 | 2019-08-30 | 刘涛 | A kind of self-leveling engineering survey level of bubble type |
-
2002
- 2002-10-15 CN CN 02260684 patent/CN2572338Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180901A (en) * | 2015-10-07 | 2015-12-23 | 湖南科技学院 | Spherical capacitive plane level detection sensor |
| CN110186425A (en) * | 2019-06-28 | 2019-08-30 | 刘涛 | A kind of self-leveling engineering survey level of bubble type |
| CN110186425B (en) * | 2019-06-28 | 2023-08-18 | 河北博茗检验检测服务有限公司 | Bubble type automatic leveling level for engineering measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |