CN202947988U - Capacitance sensor of portable type oil quality rapid analyzer - Google Patents
Capacitance sensor of portable type oil quality rapid analyzer Download PDFInfo
- Publication number
- CN202947988U CN202947988U CN 201220414904 CN201220414904U CN202947988U CN 202947988 U CN202947988 U CN 202947988U CN 201220414904 CN201220414904 CN 201220414904 CN 201220414904 U CN201220414904 U CN 201220414904U CN 202947988 U CN202947988 U CN 202947988U
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- sensor
- type oil
- portable type
- oil quality
- capacitive transducer
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Abstract
The utility model discloses a capacitance sensor of a portable type oil quality rapid analyzer, particularly the portable type oil quality rapid detector mainly utilizing a detecting technology of a digital excitation noise modulation probability filtering capacitor. The capacitance sensor of the portable type oil quality rapid analyzer is characterized in that the capacitance sensor is realized by utilizing a PCB (printed circuit board) process, the PCB line of the sensor is produced through a hard nickel and gold electroless plating process, the sensor line is of a double helix structure with a continuously variable curvature, and is of a wire sizing design. The sensor has a lower machining cost and good consistency, the portable type oil quality rapid analyzer produced by utilizing the sensor disclosed by the utility model is high in the precision of system repeatability, is not affected by operators, is strong in capability of anti-electromagnetic interference and anti-environmental disturbance, and is resistant to corrosion, friction and organic solvent.
Description
Technical field
The utility model belongs to capacitive transducer, comes the test analysis oil quality by means of the dielectric-constant property of measuring fluid, particularly is mainly used in using the portable quick oil quality detection instrument of digital actuation noise modulated probability filtering capacitance detecting technology.
Background technology
Environmental interference and bridge measurement method that the mimic channel itself that traditional technology adopts exists have limited the instrument system repeatability precision, and the bridge measurement method is used to such an extent that mimic channel easily is subjected to electromagnetic interference (EMI) and environmental interference; Use the bridge sensor method to be subjected to the operating influences such as operating personnel's oiling, wiping, zeroing very large, system's repeatability precision of instrument is low; The metal material that sensor adopts, for the corrosion-resistant of the materials such as organic solvent, organic acid, the frequent easy effect of attrition sensor parameters of wiping sensor sheet face sensor in the portable detector test process; In the sensor process, cost is high, and the not high overall performance that limits product of consistance.
The utility model content
In order to overcome with above-mentioned prior art shortcoming, the utility model purpose of design will design a kind of capacitive transducer exactly, utilize the use digital actuation noise modulated probability filtering capacitance detecting fabrication techniques oil liquid quality quick analysis instrument of this sensor production have system's repeatability precision high and be not subjected to that operating personnel's factor affects, anti-electromagnetic interference (EMI) and the characteristics such as environmental interference is strong, corrosion-resistant friction organic solvent-resistant.
In order to achieve the above object, the technical scheme taked of the utility model is:
Adopt the PCB printed circuit board technology to realize capacitive transducer, the PCB material adopts epoxy resin material or the contour dielectric constant PCB printed circuit board (PCB) of teflon material.Sensor PCB lines adopt hard plating nickel gold technique, adopt plating nickel gold thickness 0.03 to 0.5 μ m.The sensor lines are to change continuously the curvature double-spiral structure, adopt variable curvature camber line rat tail piecemeal, and each segmental arc of lines junction curvature equates.The wide design of sensor lines modified line, sensor outer ring lines chap, live width is 2 to 5mm.
Owing to having adopted high dielectric constant material, variable curvature double-spiral structure, the sensor electrical magnetic field gradient is changed evenly, be fit to use digital actuation noise modulated probability filtering capacitance detecting technology, electromagnetic interference influence and environmental interference impact have improved system's repeatability precision; Owing to having used the wide design of sensor lines modified line, make measuring accuracy not affected by operating personnel's factor, improved system's repeatability precision; Adopt hard plating nickel gold technique, sensor surface is protected, realized corrosion-resistant friction organic solvent-resistant; Use PCB technique to make sensor, make that sensor batch production consistance is high, cost is low.
Description of drawings
Fig. 1 is the utility model structural representation
Embodiment
Below in conjunction with accompanying drawing, the utility model is done concrete implementation:
In Fig. 1, the wide design of sensor lines modified line, sensor outer ring lines chap, live width is preferably at 3mm.
The sensor lines change the preferred 65 μ m of curvature double-spiral structure live width continuously, and spacing 65 μ m, the radius of circle of n circle are n 65 μ m doubly, realize the preferred variable curvature arc y=ax that adopts between each circle circle and next circle circle
3Line is rat tail piecemeal, and wherein a makes the curvature that satisfies arc on tie point equal the curvature of circle.When the length of the line segment of variable curvature arc is elongated along with arc length, the curvature of arc equals the doubly curvature of the arc of 65 μ m radiuses of next n+1.Curve copper cash thickness is 17 μ m, plating hard nickel gold 0.5 μ m.Specifying sheet material is FR-4 epoxy resin material PCB, according to the II class standard acceptance of work of IPC-A-600H.
Described sensor capacitance is 18pF.
This capacitive transducer is single-sensor, successively splash into standard oil and measured oil, fluid splashes into the sensor cavity and causes the appearance value of capacitive transducer to change, this moment, the digit pulse field wave was exported after through electric capacity and probability noise modulated, and 0 and 1 number changes, and what of variation have directly reacted model and the quality of fluid.
Claims (5)
1. the capacitive transducer of a portable oil liquid quality quick analysis instrument, it is characterized in that: adopt the PCB printed circuit board technology to realize capacitive transducer, sensor PCB lines adopt hard plating nickel gold technique, the sensor lines are to change continuously the curvature double-spiral structure, and the sensor lines are the wide designs of modified line.
2. the capacitive transducer of a kind of portable oil liquid quality quick analysis instrument according to claim 1, is characterized in that: the PCB printed circuit board (PCB) that adopts epoxy resin material or teflon material.
3. the capacitive transducer of a kind of portable oil liquid quality quick analysis instrument according to claim 1, is characterized in that: adopt plating nickel gold thickness 0.03 to 0.5 μ m.
4. the capacitive transducer of a kind of portable oil liquid quality quick analysis instrument according to claim 1 is characterized in that: adopt variable curvature camber line rat tail piecemeal, each segmental arc of lines junction curvature equates.
5. the capacitive transducer of a kind of portable oil liquid quality quick analysis instrument according to claim 1 is characterized in that: sensor outer ring lines chap, live width is 2 to 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220414904 CN202947988U (en) | 2012-08-21 | 2012-08-21 | Capacitance sensor of portable type oil quality rapid analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220414904 CN202947988U (en) | 2012-08-21 | 2012-08-21 | Capacitance sensor of portable type oil quality rapid analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202947988U true CN202947988U (en) | 2013-05-22 |
Family
ID=48423684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220414904 Expired - Fee Related CN202947988U (en) | 2012-08-21 | 2012-08-21 | Capacitance sensor of portable type oil quality rapid analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202947988U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132970A (en) * | 2014-08-06 | 2014-11-05 | 北京华安广通科技发展有限公司 | High-precision sensor for detecting ferromagnetic particles in lubricating oil |
| US11982665B2 (en) | 2020-11-20 | 2024-05-14 | Dodge Industrial, Inc. | Oil quality sensor |
-
2012
- 2012-08-21 CN CN 201220414904 patent/CN202947988U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132970A (en) * | 2014-08-06 | 2014-11-05 | 北京华安广通科技发展有限公司 | High-precision sensor for detecting ferromagnetic particles in lubricating oil |
| CN104132970B (en) * | 2014-08-06 | 2016-08-17 | 北京远瑞科技有限公司 | Ferromagnetic particle detection sensor in lubricating oil in high precision |
| US11982665B2 (en) | 2020-11-20 | 2024-05-14 | Dodge Industrial, Inc. | Oil quality sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20180821 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |