CN103335690A - Pressure-sensitive oil level sensor - Google Patents
Pressure-sensitive oil level sensor Download PDFInfo
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- CN103335690A CN103335690A CN2013100274238A CN201310027423A CN103335690A CN 103335690 A CN103335690 A CN 103335690A CN 2013100274238 A CN2013100274238 A CN 2013100274238A CN 201310027423 A CN201310027423 A CN 201310027423A CN 103335690 A CN103335690 A CN 103335690A
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- pressure
- strain
- module
- level sensor
- oil
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Abstract
The invention relates to a pressure-sensitive oil level sensor which comprises a housing and an upper cover fixed and connected hermetically, wherein the upper cover is provided with an electrical socket assembly fixedly connected with the upper cover; a control circuit board which is fixed and connected hermetically with a bottom board is arranged on the bottom board of the housing, and electrically connected with the electrical socket assembly; a pressure-sensitive probe and a pressure strain module are arranged on the control circuit board; the bottom board of the housing is provided with an oil through hole in a position corresponding to the pressure-sensitive probe; the pressure strain module converts a pressure strain into a strain electrical signal; and the strain electrical signal is acquired and output to an automobile instrument system after processed by a control conversion module. The pressure-sensitive oil level sensor has the benefits that oil pressure of an oil tank is measured by the pressure-sensitive probe, and the electrical signal indicating the reserve oil quantity of the oil tank is output to the automobile instrument system after the oil pressure is processed by the pressure strain module and the control conversion module, so that the pressure-sensitive oil level sensor has the advantages of long service life, high reaction sensitivity and stable performance.
Description
Technical field
The present invention relates to the fuel level sensor of a kind of vehicle fuel system, relate in particular to a kind of pressure inductive fuel level sensor.
Background technology
At present, fuel level sensor be operated in automotive oil tank inside oil level information can be passed to automobile instrument panel, make the automobile driver can understand the device of oil level information constantly.The fuel level sensor of prior art comprises a float swing arm assembly, during the fuel level sensor operate as normal, because the gravity of self and the buoyancy of fuel oil, float swing arm assembly can remain on certain height in fluid, when oil level changes, the relative position of float swing arm assembly also can change, this change meeting directly influences the relative rotation position that is attached thereto the swing arm support that connects, swing arm supporting band moving contact rack rotates around the resistor disc support together followed by the swing arm support, thereby change the relative position of contact on resistor disc, namely changed the variation of the resistance value of certain position correspondence, and automobile ECU can be by gathering the variation of resistance value on the fuel level sensor, be translated into corresponding electric signal and flow to automobile instrument system, make the driver can in time understand the situation of present automotive oil tank oil level.The fuel level sensor of prior art exists that breakpoint is many, the life-span is short and shortcomings such as reaction sensitivity difference and unstable properties.
Summary of the invention
Purpose of the present invention overcomes the deficiencies in the prior art exactly, and the fuel level sensor of a kind of long service life, reaction sensitivity height and stable performance is provided.
The technical solution adopted in the present invention is: the pressure inductive fuel level sensor, the housing and the loam cake that comprise fixed seal connection, be covered with the electrical receptacle assembly of fixedlying connected with it on described, the base plate of described housing is provided with the control circuit board of fixedlying connected with it, and described control circuit board is electrically connected with electrical receptacle assembly; Described control circuit board is provided with pressure sensitive probe and pressure-strain module, the base plate of described housing is provided with an oil through in the position corresponding with the pressure sensitive probe, described pressure-strain module is converted into the electrostrictive strain signal with pressure-strain, and described electrostrictive strain signal outputs to automobile instrument system through collection after controlling module processing.
Beneficial effect of the present invention is: because the present invention adopts pressure sensitive to pop one's head in to measure the oil pressure of fuel tank, give automobile instrument system through the electric signal of output indication fuel tank oil reserve after pressure-strain module and the control module processing again, cancelled resistor disc and the contact of prior art.Thereby has an advantage of long service life, reaction sensitivity height and stable performance.
Description of drawings
Fig. 1: be structural representation of the present invention;
Fig. 2: be electrical principle block diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Shown in Fig. 1-2, the pressure inductive fuel level sensor, the housing 1 and the loam cake 2 that comprise fixed seal connection, described loam cake 2 is provided with the electrical receptacle assembly 3 of fixedlying connected with it, the base plate 4 of described housing 1 is provided with the control circuit board 5 of fixedlying connected with it, and the control circuit board 5 of this enforcement also carries out casting glue to be handled.Described control circuit board 5 is electrically connected with electrical receptacle assembly 3; Described control circuit board 5 is provided with pressure sensitive probe and pressure-strain module, the base plate 4 of described housing 1 is provided with an oil through 6 in the position corresponding with the pressure sensitive probe, described pressure-strain module is converted into the electrostrictive strain signal with pressure-strain, and described electrostrictive strain signal outputs to automobile instrument system through collection after controlling module processing.
Described control modular converter comprises signal amplification module, signal buffer module and the signal conversion module that is electrically connected successively; Described pressure-strain module also is electrically connected with temperature compensation module.Big damping hole in little outside described oil through 6 is made as.The inner ring of described housing 1 also is provided with thermal insulation board 7.
Signal buffer module and damping hole can solve automotive oil tank better and rock, the problem of the pressure surge that causes.
Temperature compensation module is that the automotive oil tank temperature fluctuation produces the problem of zero point drift in the car running process to the pressure-strain module in order to solve better.
During use, the present invention is packed in the fuel tank, fuel oil imports to the pressure sensitive probe by oil through 6, the distortion that is under pressure of pressure-strain sheet in the pressure sensitive probe, the pressure-strain module is converted into the electrostrictive strain signal with pressure-strain, after the electrostrictive strain signal is temperature compensated, carries out signal through the signal amplification module again and amplify; Before carrying out the signal conversion, carry out buffered by the signal buffer module earlier, guarantee the stability of signal, carry out the photoelectricity coupling by signal conversion module again, further strengthen the control to signal stabilization, gather at last and transmit signal, the electric signal of conveying and automobile instrument system are coordinated mutually.
Claims (5)
1. pressure inductive fuel level sensor, it is characterized in that: the housing and the loam cake that comprise fixed seal connection, be covered with the electrical receptacle assembly of fixedlying connected with it on described, the base plate of described housing is provided with the control circuit board of fixedlying connected with it, and described control circuit board is electrically connected with electrical receptacle assembly; Described control circuit board is provided with pressure sensitive probe and pressure-strain module, the base plate of described housing is provided with an oil through in the position corresponding with the pressure sensitive probe, described pressure-strain module is converted into the electrostrictive strain signal with pressure-strain, and described electrostrictive strain signal outputs to automobile instrument system through collection after controlling module processing.
2. pressure inductive fuel level sensor according to claim 1 is characterized in that: described control modular converter comprises signal amplification module, signal buffer module and the signal conversion module that is electrically connected successively.
3. pressure inductive fuel level sensor according to claim 1 and 2, it is characterized in that: described pressure-strain module also is electrically connected with temperature compensation module.
4. pressure inductive fuel level sensor according to claim 1 and 2 is characterized in that: big damping hole in little outside described oil through is made as.
5. pressure inductive fuel level sensor according to claim 1 and 2, it is characterized in that: the inner ring of described housing also is provided with thermal insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100274238A CN103335690A (en) | 2013-01-15 | 2013-01-15 | Pressure-sensitive oil level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100274238A CN103335690A (en) | 2013-01-15 | 2013-01-15 | Pressure-sensitive oil level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103335690A true CN103335690A (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100274238A Pending CN103335690A (en) | 2013-01-15 | 2013-01-15 | Pressure-sensitive oil level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103335690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768130A (en) * | 2015-11-24 | 2017-05-31 | 中航贵州飞机有限责任公司 | A kind of aircraft pasta signal filtering device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207504U (en) * | 1987-04-29 | 1988-03-16 | 宝鸡市秦岭晶体管厂 | Liquid depth transducer of silicon piezoresistance type |
| CN2089621U (en) * | 1991-02-02 | 1991-11-27 | 蒋继申 | Liquid level transmitter |
| CN2190781Y (en) * | 1994-03-18 | 1995-03-01 | 李载达 | Water level transmitter |
| CN2226282Y (en) * | 1994-12-16 | 1996-05-01 | 烟台市招远自动化仪表厂 | Static pressure liquid level-meter sensor device |
| JPH10111163A (en) * | 1996-10-08 | 1998-04-28 | Ebara Corp | Submerging water pressure-type water level sensor |
| CN2449208Y (en) * | 2000-11-02 | 2001-09-19 | 麦克传感器有限公司 | Pressure-resistance type liquid level transmitters |
| CN1621784A (en) * | 2004-12-31 | 2005-06-01 | 北京塞尔瑟斯仪表科技有限公司 | Two-wire system multiple sensors liquid level transmitting instrument |
| CN201569467U (en) * | 2009-09-22 | 2010-09-01 | 上海凡宜科技电子有限公司 | Pressure content gauge |
| CN201844891U (en) * | 2010-11-23 | 2011-05-25 | 中国地质调查局水文地质环境地质调查中心 | Monitor for liquid level and temperature |
| CN102200461A (en) * | 2011-03-04 | 2011-09-28 | 上海盛迪传感技术有限公司 | Liquid level transmitter |
| CN202614327U (en) * | 2012-05-14 | 2012-12-19 | 常州迪泰科特测控设备有限公司 | Mining water level sensor |
| CN203069233U (en) * | 2013-01-15 | 2013-07-17 | 汇润机电有限公司 | Pressure induction type oil level sensor |
-
2013
- 2013-01-15 CN CN2013100274238A patent/CN103335690A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207504U (en) * | 1987-04-29 | 1988-03-16 | 宝鸡市秦岭晶体管厂 | Liquid depth transducer of silicon piezoresistance type |
| CN2089621U (en) * | 1991-02-02 | 1991-11-27 | 蒋继申 | Liquid level transmitter |
| CN2190781Y (en) * | 1994-03-18 | 1995-03-01 | 李载达 | Water level transmitter |
| CN2226282Y (en) * | 1994-12-16 | 1996-05-01 | 烟台市招远自动化仪表厂 | Static pressure liquid level-meter sensor device |
| JPH10111163A (en) * | 1996-10-08 | 1998-04-28 | Ebara Corp | Submerging water pressure-type water level sensor |
| CN2449208Y (en) * | 2000-11-02 | 2001-09-19 | 麦克传感器有限公司 | Pressure-resistance type liquid level transmitters |
| CN1621784A (en) * | 2004-12-31 | 2005-06-01 | 北京塞尔瑟斯仪表科技有限公司 | Two-wire system multiple sensors liquid level transmitting instrument |
| CN201569467U (en) * | 2009-09-22 | 2010-09-01 | 上海凡宜科技电子有限公司 | Pressure content gauge |
| CN201844891U (en) * | 2010-11-23 | 2011-05-25 | 中国地质调查局水文地质环境地质调查中心 | Monitor for liquid level and temperature |
| CN102200461A (en) * | 2011-03-04 | 2011-09-28 | 上海盛迪传感技术有限公司 | Liquid level transmitter |
| CN202614327U (en) * | 2012-05-14 | 2012-12-19 | 常州迪泰科特测控设备有限公司 | Mining water level sensor |
| CN203069233U (en) * | 2013-01-15 | 2013-07-17 | 汇润机电有限公司 | Pressure induction type oil level sensor |
Non-Patent Citations (1)
| Title |
|---|
| 孙宝元等: "《传感器及其应用手册》", 30 April 2004, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768130A (en) * | 2015-11-24 | 2017-05-31 | 中航贵州飞机有限责任公司 | A kind of aircraft pasta signal filtering device |
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| DD01 | Delivery of document by public notice |
Addressee: Xia Chunyang Document name: Notification of Acceptance of Patent Application |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131002 |