CN107200140B - Oil mass sensor and aircraft - Google Patents
Oil mass sensor and aircraft Download PDFInfo
- Publication number
- CN107200140B CN107200140B CN201710361079.4A CN201710361079A CN107200140B CN 107200140 B CN107200140 B CN 107200140B CN 201710361079 A CN201710361079 A CN 201710361079A CN 107200140 B CN107200140 B CN 107200140B
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- electrode tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/005—Accessories not provided for in the groups B64D37/02 - B64D37/28
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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
- G01F23/26—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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses an oil mass sensor and an aircraft with the oil mass sensor, wherein the oil mass sensor comprises an end cover, the end cover comprises a mounting disc, a connecting end and an accommodating end, the connecting end and the accommodating end are separated by the mounting disc, a mounting cavity is formed in the connecting end, and an accommodating cavity is formed in the accommodating end; the signal converter is arranged in the accommodating cavity and used for converting the measured capacitance signal into a digital signal; the detection assembly, this detection assembly's one end install in the installation cavity, detection assembly includes the probe, the mounting disc is equipped with first through-hole, probe one end is passed first through-hole with signal converter connects, and the other end is located detection assembly to detect the capacitance signal, be equipped with first sealing member in this first through-hole. According to the technical scheme, the probe is designed, and the sealing piece is arranged in the first through hole to seal a gap between the probe and the first through hole so as to prevent the siphonage.
Description
Technical Field
The invention relates to the technical field of oil mass measurement, in particular to an oil mass sensor and an aircraft with the oil mass sensor.
Background
The oil mass sensor that current aircraft adopted is mostly capacitanc sensor, and this oil mass sensor includes the end cover usually, and this end cover lower extreme is the link, installs the condenser pipe, and this end cover upper end is the holding end, installs signal converter.
And the oil mass sensor is generally inserted vertically to one side and is installed inside the oil tank, and this end cover department need set up detection components and parts, and the setting detects components and parts department and can produce fit clearance, and this department easily produces siphon phenomenon, and the water that contains in the aviation kerosene can shift up and get into to the holding end of end cover for signal converter's electronic chip takes place short circuit or inefficacy phenomenon easily.
Disclosure of Invention
The invention mainly aims to provide an oil quantity sensor, aiming at preventing the occurrence of siphon phenomenon in the oil quantity sensor.
In order to achieve the above object, the present invention provides an oil sensor, comprising
The end cover comprises a mounting disc, a connecting end and an accommodating end, wherein the connecting end and the accommodating end are separated by the mounting disc;
the signal converter is arranged in the accommodating cavity and used for converting the measured capacitance signal into a digital signal;
the detection assembly, this detection assembly's one end install in the installation cavity, detection assembly includes the probe, the mounting disc is equipped with first through-hole, probe one end is passed first through-hole with signal converter connects, and the other end is located detection assembly to detect the capacitance signal, be equipped with first sealing member in this first through-hole.
Preferably, the oil sensor further comprises a first insulating member, the first insulating member is mounted on the mounting disc and located between the mounting disc and the detection assembly, the first insulating member is provided with a second through hole which penetrates through the first through hole and is used for the probe to pass through, a first mounting groove is formed in the upper end of the first insulating member, and a second sealing member is mounted in the first mounting groove.
Preferably, the oil mass sensor further comprises a temperature sensor, the mounting disc is provided with a third through hole, the first insulating part is provided with a fourth through hole, the temperature sensor penetrates through the third through hole and is hermetically mounted in the fourth through hole
Preferably, the oil mass sensor still includes the installed part, the installed part is equipped with first mounting hole, temperature sensor install in first mounting hole, the installed part runs through the third through-hole install in the fourth through-hole.
Preferably, the detection assembly comprises an inner electrode tube and an outer electrode tube sleeved outside the inner electrode tube, the inner electrode tube and one end of the outer electrode tube are fixedly connected to the first insulating part, a detection gap is arranged between the inner electrode tube and the outer electrode tube, and one end of the probe extends into the detection gap.
Preferably, the oil mass sensor still includes interior end cap, first insulating part is equipped with the groove of stepping down, interior end cap install in the groove of stepping down, just the upper end of interior end cap corresponds fourth through-hole is equipped with the second mounting hole, the lower extreme of interior end cap cup joint in interior electrode tube, the installed part runs through the third through-hole with fourth through-hole install in the second mounting hole.
Preferably, the upper end face of the inner plug is attached to the bottom wall of the abdicating groove; the upper end face of the inner plug is provided with a second mounting groove, and a third sealing element is mounted in the second mounting groove.
Preferably, the axial diameter of the upper end of the inner plug is equal to the outer diameter of the inner electrode tube, the axial diameter of the lower end of the inner plug is equal to the inner diameter of the inner electrode tube, and part of the inner electrode tube is accommodated in the abdicating groove.
Preferably, the mounting part is a screw, the second mounting hole is a threaded hole, the oil sensor further includes a second insulating part, the second insulating part is provided with a fifth through hole for the screw to pass through, and the second insulating part is mounted on the second through hole.
The invention also provides an aircraft, which comprises an oil tank shell and an oil mass sensor, wherein the oil mass sensor is arranged on the oil tank shell, the oil mass sensor comprises an end cover, the end cover comprises a mounting disc, a connecting end and an accommodating end, the connecting end and the accommodating end are separated by the mounting disc, a mounting cavity is formed in the connecting end, and an accommodating cavity is formed in the accommodating end;
the signal converter is arranged in the accommodating cavity and used for converting the measured capacitance signal into a digital signal;
the detection assembly, this detection assembly's one end install in the installation cavity, detection assembly includes the probe, the mounting disc is equipped with first through-hole, probe one end is passed first through-hole with signal converter connects, and the other end is located detection assembly to detect the capacitance signal, be equipped with first sealing member in this first through-hole.
According to the technical scheme, the first sealing piece is arranged in the first through hole provided with the probe to seal the gap between the probe and the first through hole, so that the siphonage phenomenon is prevented.
Specifically, the capacitance signal of the detection assembly is transmitted to the signal converter by designing the probe, and because the probe has a good glue injection sealing effect, a gap between the probe and the first through hole is sealed by arranging a first sealing element in the first through hole; so as to prevent the occurrence of siphon phenomenon, which causes the moisture to move up along the probe to the signal converter through the gap to cause short circuit or failure of the electronic chip.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an oil level sensor according to the present invention;
FIG. 2 is an enlarged view of a portion of the seed A of FIG. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides an oil amount sensor 100, where the oil amount sensor 100 includes:
the end cover 10 comprises a mounting disc 13, and a connecting end 12 and a containing end 11 which are separated by the mounting disc 13, wherein a mounting cavity (not shown) is formed in the connecting end 12, and a containing cavity (not shown) is formed in the containing end 11;
the signal converter 120 is installed in the accommodating cavity, and converts the measured capacitance signal into a digital signal;
the detection assembly 4, one end of this detection assembly 4 install in the installation cavity, detection assembly 4 includes probe 1, mounting disc 13 is equipped with first through-hole (not marking), probe 1 one end pass first through-hole with signal converter 120 is connected, and the other end is located detection assembly 4 to detect the capacitance signal, be equipped with first sealing member (not marking) in this first through-hole.
According to the technical scheme, the probe 1 is designed, and the first through hole is internally provided with the first sealing piece so as to seal a gap between the probe 1 and the first through hole; so as to prevent the occurrence of siphon phenomenon.
Specifically, the probe 1 is designed to transmit the capacitance signal of the detection assembly 4 to the signal converter 120, and since the probe 1 has a good glue injection sealing effect, a sealing member is arranged in the first through hole to seal a gap between the probe 1 and the first through hole; to prevent the occurrence of a siphon phenomenon that causes moisture to move up through the gap along the probe 1 to the signal converter 120, causing short-circuiting or failure of its electronic chip.
The end cap 10 may be a straight end cap 10 or an inclined end cap 10, and may be selected according to the installation manner of the oil sensor 100.
In this embodiment, referring to fig. 2, the oil sensor 100 further includes a first insulating member 20, the first insulating member 20 is installed on the mounting plate 13 and located between the mounting plate 13 and the detection assembly 4, an upper end surface of the first insulating member 20 is tightly attached to the mounting plate 13, the first insulating member 20 is provided with a second through hole (not labeled) which penetrates through the first through hole and through which the probe 1 passes, and the mounting plate 13 and the first insulating member 20 isolate the accommodating cavity from the mounting cavity, that is, the other end of the probe 1 connected to the signal sensor needs to pass through the first through hole and the second through hole and enter the detection assembly 4; the upper end of the first insulating member 20 is provided with a first mounting groove (not labeled) in which the second sealing member 2 is mounted.
This technical scheme is convenient for install determine module 4 through setting up first insulating part 20, further prevents the siphon through setting up second sealing member 2 to make the holding chamber of mounting disc 13 upper end reach further isolated effect with the installation cavity of lower extreme. Therefore, the anti-siphon effect is better, the aviation kerosene leakage caused by the siphon phenomenon can be prevented, and the harm factors caused by the leakage are avoided.
In the present embodiment, it is preferable that the second sealing member 2 is provided at an upper end surface edge of the first insulating member 20.
Wherein the second sealing element 2 may be provided as an O-ring. The O-shaped sealing ring 2 is made of oil-resistant rubber material, and has simple structure, convenient installation and good sealing performance. Preferably, the upward facing surface of the double-layer O-ring 2 is chamfered to form a flat surface to be closely attached to the lower surface of the mounting plate 13, so that the sealing effect is better.
In this embodiment, the oil amount sensor 100 further includes a temperature sensor 70, the mounting plate 13 is provided with a third through hole (not labeled), the first insulating member 20 is provided with a fourth through hole (not labeled), and the temperature sensor 70 penetrates through the third through hole and is hermetically mounted in the fourth through hole. The temperature sensor 70 of the technical scheme of the invention is used for measuring the temperature of the fuel oil, because the change of the temperature of the fuel oil can cause the change of the density and the dielectric constant of the fuel oil, the calculation of the mass fuel oil quantity of the fuel oil is compensated and revised through the interpolation calculation of a density-temperature curve after the temperature of the fuel oil is measured, thereby realizing the precision requirement of the fuel oil quantity measurement.
The following embodiments provide benefits in terms of anti-siphoning while providing a smart mounting for the temperature sensor 70.
Further, the oil amount sensor 100 is further provided with a mounting member 60, the mounting member 60 is provided with a first mounting hole (not labeled), the temperature sensor 70 is mounted in the first mounting hole, and the mounting member 60 is mounted in the fourth through hole through the third through hole.
Further, the detection assembly 4 includes an inner electrode tube 40 and an outer electrode tube 30 sleeved outside the inner electrode tube 40, one end of the inner electrode tube 40 and one end of the outer electrode tube 30 are fixedly connected to the first insulating member 20, a detection gap is provided between the inner electrode tube 40 and the outer electrode tube 30, and one end of the probe 1 extends into the detection gap.
Preferably, the first insulating member 20 can be a stepped shaft-shaped arrangement with a shaft diameter gradually decreasing from top to bottom, and includes a first shaft section 22, a second shaft section 23, a third shaft section 24 and a fourth shaft section 25, and the outer electrode tube 30 is sleeved on the third shaft section 24. By arranging the first insulating part 20 in this way, the structure is ingenious, the installation of the inner electrode tube 40 and the outer electrode tube 30 in the detection assembly 4 is convenient, and the specified design interval is easily kept between the inner electrode tube 30 and the outer electrode tube 30.
Further, the oil mass sensor 100 further comprises an inner plug 50, the first insulating member 20 is provided with a yielding groove 21, the inner plug 50 is installed in the yielding groove 21, the upper end of the inner plug 50 corresponds to the fourth through hole 51, the lower end of the inner plug 50 is sleeved on the inner electrode tube 40, and the installation member 60 penetrates through the third through hole and the fourth through hole and is installed in the second installation hole 51. Through setting up interior end cap 50, both can play the installation fixed action, can play the shutoff effect again.
Further, the upper end surface of the inner plug 50 is attached to the bottom wall 210 of the abdicating groove; the upper end surface of the inner plug 50 is provided with a second mounting groove (not marked), and the second mounting groove is provided with a third sealing element 3. Wherein, this third sealing member 3 also can select the O type sealing washer for use, and also can carry out the edging and form the plane and hug closely with the diapire 210 of the groove of stepping down.
In summary, the oil sensor 100 has a compact overall structure, and the double-layer sealing combination, i.e., the second sealing element 2 and the third sealing element 3, better realizes the isolation of the upper end and the lower end of the end cover 10, so as to achieve the effect of thoroughly preventing siphonage.
In this embodiment, the axial diameter of the upper end of the inner plug 50 is equal to the outer diameter of the inner electrode tube 40, the axial diameter of the lower end of the inner plug 50 is equal to the inner diameter of the inner electrode tube 40, and a part of the inner electrode tube 40 is accommodated in the receding groove 21. So first insulating part 20 has centre gripping fixed action to interior electrode tube 40, and interior end cap 50 and interior electrode tube 40 and the little excessive cooperation in shaft hole 21 in addition for moisture or kerosene are difficult for entering into the holding chamber to the upper end of mounting disc 13 through the cooperation gap.
Further, the mounting member 60 is a screw, the second mounting hole 51 is a threaded hole, the oil sensor 100 further includes a second insulating member 80, the second insulating member 80 is provided with a fifth through hole for the screw to pass through, and the second insulating member 80 is mounted in the third through hole.
Specifically, this fuel level sensor 100 still is equipped with second insulator 80, installed part 60 adopts outer hex bolts, second mounting hole 51 sets up to the screw hole of this outer hex bolts of adaptation, second insulator 80 is the step shaft form, and is equipped with this second insulator 80 and supplies the fifth through-hole (not sign) that outer hex bolts 60 passed, this second insulator 80 includes major diameter section 81 and path section 82, the up end of major diameter section 81 with the head laminating of outer hex bolts 60, the lower terminal surface with the upper surface laminating of mounting disc 13, the external diameter of path section 82 equals the aperture of third through-hole 130, the aperture of fourth through-hole equals the diameter of outer hex bolts 60. By providing the second insulator 80 for isolating the socket head cap screw 60 from the mounting plate 13, the mounting member 60 is made easy to mount and dismount by the socket head cap screw.
In this embodiment, referring to fig. 1 or fig. 2, the oil amount sensor 100 is further provided with a cover plate 90, and the cover plate 90 is disposed on the upper end surface of the accommodating end 11. Change and pass through screw fixed connection between the up end of apron 90 and holding end 11, in order to avoid signal sensor to be corroded by the fuel, be equipped with the sealing washer in apron 90 and holding end 11 lid department of closing, this sealing washer adopts polytetrafluoroethylene, and polytetrafluoroethylene has fine corrosion-resistant characteristic to aviation fuel, plays better sealed effect simultaneously. By the arrangement, the signal converter 120 is sealed inside the accommodating end 11, and the working environment of the signal transmission module is kept clean and dry.
In this embodiment, referring to fig. 2, the oil amount sensor 100 further includes a protective sleeve 110, and the protective sleeve 110 is sleeved on the second shaft section 24 of the first insulating member 20. By providing the protective sheath 110 with interference shielding and preventing leakage of kerosene, it is preferable to add an electromagnetic shielding sheath 140 to effectively shield electromagnetic interference.
Further, a fixing column 131 is convexly arranged on the surface of the mounting plate 13 facing the accommodating end 11, the signal sensor is fixedly mounted on the fixing column 131, and a cavity is formed between the signal sensor and the mounting plate 13.
The invention further provides an aircraft, which comprises a fuel tank shell and a fuel quantity sensor 100 installed on the fuel tank shell, wherein the specific structure of the fuel quantity sensor 100 refers to the above embodiments, and the aircraft adopts all technical solutions of all the above embodiments, so that at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An oil amount sensor, characterized by comprising:
the end cover comprises a mounting disc, a connecting end and an accommodating end, wherein the connecting end and the accommodating end are separated by the mounting disc;
the signal converter is arranged in the accommodating cavity and used for converting the measured capacitance signal into a digital signal;
the detection assembly, this detection assembly's one end install in the installation cavity, detection assembly includes the probe, the mounting disc is equipped with first through-hole, probe one end is passed first through-hole with signal converter connects, and the other end is located detection assembly to detect the capacitance signal, be equipped with first sealing member in this first through-hole.
2. The fuel sensor according to claim 1, further comprising a first insulating member installed on the mounting plate between the mounting plate and the sensing unit, wherein the first insulating member has a second through hole penetrating the first through hole and allowing the probe to pass therethrough, and a first mounting groove is formed at an upper end of the first insulating member and receives a second sealing member.
3. The fuel sensor of claim 2, further comprising a temperature sensor, wherein the mounting plate is provided with a third through hole, the first insulator is provided with a fourth through hole, and the temperature sensor penetrates through the third through hole and is hermetically mounted in the fourth through hole.
4. The fuel level sensor of claim 3 further comprising a mounting member having a first mounting hole, wherein the temperature sensor is mounted in the first mounting hole, and wherein the mounting member is mounted in the fourth through hole through the third through hole.
5. The oil sensor according to claim 4, wherein the detecting assembly comprises an inner electrode tube and an outer electrode tube sleeved outside the inner electrode tube, one end of the inner electrode tube and one end of the outer electrode tube are fixedly connected to the first insulating member, a detecting gap is formed between the inner electrode tube and the outer electrode tube, and one end of the probe extends into the detecting gap.
6. The oil sensor according to claim 5, characterized in that the oil sensor further comprises an inner plug, the first insulating member is provided with a recess groove, the inner plug is mounted in the recess groove, a second mounting hole is formed in the upper end of the inner plug corresponding to the fourth mounting hole, the lower end of the inner plug is sleeved on the inner electrode tube, and the mounting member penetrates through the third through hole and the fourth mounting hole and is mounted in the second mounting hole.
7. The oil mass sensor of claim 6, wherein the upper end surface of the inner plug is attached to the bottom wall of the abdicating groove; the upper end face of the inner plug is provided with a second mounting groove, and a third sealing element is mounted in the second mounting groove.
8. The oil sensor according to claim 7, wherein the inner plug has an upper end with an axial diameter equal to the outer diameter of the inner electrode tube, a lower end with an axial diameter equal to the inner diameter of the inner electrode tube, and the inner electrode tube is partially received in the offset groove.
9. The fuel amount sensor according to claim 7, wherein the mounting member is a screw, the second mounting hole is a threaded hole, and the fuel amount sensor further comprises a second insulator provided with a fifth through hole for the screw to pass through, the second insulator being mounted to the second through hole.
10. An aircraft comprising a tank housing, characterized in that it further comprises a fuel quantity sensor according to any one of claims 1-9, which fuel quantity sensor is mounted to the tank housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361079.4A CN107200140B (en) | 2017-05-19 | 2017-05-19 | Oil mass sensor and aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361079.4A CN107200140B (en) | 2017-05-19 | 2017-05-19 | Oil mass sensor and aircraft |
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| CN107200140A CN107200140A (en) | 2017-09-26 |
| CN107200140B true CN107200140B (en) | 2020-04-03 |
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| CN201710361079.4A Active CN107200140B (en) | 2017-05-19 | 2017-05-19 | Oil mass sensor and aircraft |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613716B (en) * | 2018-05-09 | 2020-04-14 | 上海航天设备制造总厂有限公司 | Capacitance type liquid level measuring device for aviation fuel oil continuous measurement |
| CN114054555B (en) * | 2021-11-11 | 2024-04-05 | 四川泛华航空仪表电器有限公司 | Capacitive sensor with bending design |
| GB2624252A (en) * | 2022-11-14 | 2024-05-15 | Airbus Operations Ltd | Aircraft access cover |
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| JP2014021043A (en) * | 2012-07-23 | 2014-02-03 | Denso Corp | Fuel property sensor |
| JP2016211870A (en) * | 2015-04-30 | 2016-12-15 | 愛三工業株式会社 | Sensor device |
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| CN2475007Y (en) * | 2001-04-29 | 2002-01-30 | 沈庆度 | Frequency change type liquid level control sensor capable of inserting into water tank |
| CN1914487A (en) * | 2004-10-29 | 2007-02-14 | 日本特殊陶业株式会社 | Liquid state detecting sensor |
| CN202171493U (en) * | 2011-08-05 | 2012-03-21 | 光阳工业股份有限公司 | Vertical fuel gauge structure for vehicles |
| CN204388964U (en) * | 2014-11-11 | 2015-06-10 | 深圳市南航电子工业有限公司 | A kind of capacitance-type fuel quantity survey sensor with shield assembly and system |
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