CN201548292U - Non-contact type oil level sensor - Google Patents
Non-contact type oil level sensor Download PDFInfo
- Publication number
- CN201548292U CN201548292U CN2009202202159U CN200920220215U CN201548292U CN 201548292 U CN201548292 U CN 201548292U CN 2009202202159 U CN2009202202159 U CN 2009202202159U CN 200920220215 U CN200920220215 U CN 200920220215U CN 201548292 U CN201548292 U CN 201548292U
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- CN
- China
- Prior art keywords
- magnetic rotation
- level sensor
- resistance
- swing arm
- fuel level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Level Indicators Using A Float (AREA)
Abstract
A non-contact type oil level sensor includes a float and a linkage rod connected together, wherein a circuit board is in sealing fixed in a preset storage space of a permanent seat, a power-supply circuit, a magnetic rotation encoder, an analog microcontroller, and a digital potentiometer are provided on the circuit board, a swing arm is hinged on the permanent seat, an induction magnet fixed with a magnetic rotation encoder is sealed on the swing arm, the power-supply circuit supplies power to the magnetic rotation encoder, the analog microcontroller and the digital potentiometer, the detection signal of the magnetic rotation encoder is converted into the resistor variation through the analog microcontroller, the resistor variation performs resistor output through the digital potentiometer process. The non-contact type oil level sensor has long service life, high output electrical resistance accuracy and no output of error resistor signals.
Description
Technical field:
The utility model liquid level sensor technical field more specifically in automotive oil tank inside how many oil masses being measured, sends automobile oil gauge to, the liquid level sensor that shows after the processing.
Background technology:
Fuel level sensor is the sensor that automotive oil tank must be equipped, and it can in time indicate the amount of fuel in the fuel tank with after automobile power system, oil level gage are connected.
Traditional electronic type Hall element adopts accurate thick-film resistor to realize variable resistor, and at present main resistance change is 40～300 ohm, and this working sensor principle is simple, and just a variable resistor is put into fuel tank and got final product.Its weak point is: 1, variable resistor is a contact, and serviceable life is short, and its life-span is 2～4 years.2, output signal resolution is low, and the output resistance precision is not high.3, contacts of contactor produces and easily produces layer of metal sulfide oxidation film, increases the contact resistance resistance, makes the resistance signal of sensor output error.
The utility model content:
The purpose of this utility model is to provide contactless fuel level sensor, its long service life, and output resistance precision height can the output error resistance signal.
Technology solution of the present utility model is as follows:
Contactless fuel level sensor, comprise the float and the connecting rod that link together, default receiving space sealing and fixing has wiring board in the holder, have power circuit, magnetic rotation scrambler, simulation microcontroller, digital regulation resistance on the wiring board, swing arm is that the axle center is hinged on the holder with the bearing pin, and sealing and fixing has the induced magnet of magnetic rotation scrambler in the swing arm;
Power circuit is given magnetic rotation scrambler, simulation microcontroller, digital regulation resistance power supply, and the detection signal of magnetic rotation scrambler is converted into resistance variations through the simulation microcontroller, and this resistance variations is handled through digital regulation resistance and carried out resistance output.
Described magnetic rotation scrambler B is that AS5030 type, simulation microcontroller C are that 78F9202 type, digital regulation resistance D are the CAT5113 type.
Form springhole in the described swing arm.
The opening part ultrasonic heat of the default receiving space of the holder that described plastic material is manufactured is dissolved with the plastic cement cover plate.
The wiring pin injection moulding of each circuit unit is fixed on the plastic cement cover plate in the described wiring board.
The beneficial effects of the utility model are:
1, the utility model utilizes swing arm to drive the induced magnet rotation of magnetic rotation scrambler, and magnet and magnetic rotation scrambler all do not contact with oily medium, does not produce oxide film and the output error resistance signal so can not resemble the prior art.
2, it uses magnetic rotation scrambler B to be the CAT5113 type as AS5030 type, simulation microcontroller C as 78F9202 type, digital regulation resistance D, and its output resistance scope is adjustable, and output accuracy improves greatly simultaneously.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is an electric functional-block diagram of the present utility model;
Fig. 3 is the utility model structural representation;
Fig. 4 is the A-A cut-open view of Fig. 3.
Embodiment:
Embodiment, see Fig. 1～4, contactless fuel level sensor, comprise the float 1 and the connecting rod 2 that link together, default receiving space 32 sealing and fixing have wiring board 4 in the holder 3, have power circuit A, magnetic rotation scrambler B, simulation microcontroller C, digital regulation resistance D on the wiring board, swing arm 5 is that the axle center is hinged on the holder 3 with bearing pin 6, and sealing and fixing has the induced magnet B1 of magnetic rotation scrambler B in the swing arm 5;
Power circuit A gives magnetic rotation scrambler B, simulation microcontroller C, digital regulation resistance D power supply, and the detection signal of magnetic rotation scrambler B is converted into resistance variations through simulation microcontroller C, and this resistance variations is handled through digital regulation resistance D and carried out resistance output.
Described magnetic rotation scrambler B is that AS5030 type, simulation microcontroller C are that 78F9202 type, digital regulation resistance D are the CAT5113 type.
Form springhole 51 in the described swing arm 5.Being convenient to connecting rod 2 is plugged in the swing arm 5 fast.
The opening part ultrasonic heat of the default receiving space 32 of the holder 3 that described plastic material is manufactured is dissolved with plastic cement cover plate 31.
Wiring pin 41 injection mouldings of each circuit unit are fixed on the plastic cement cover plate 31 in the described wiring board 4.
Principle of work: the utility model utilizes swing arm 5 to drive the induced magnet B1 rotation of magnetic rotation scrambler B, and magnet B 1 and magnetic rotation scrambler B do not contact with oily medium, does not produce oxide film and the output error resistance signal so can not resemble the prior art.Power circuit A gives magnetic rotation scrambler B, simulation microcontroller C, digital regulation resistance D power supply, and the detection signal of magnetic rotation scrambler B is converted into resistance variations through simulation microcontroller C, and this resistance variations is handled through digital regulation resistance D and carried out resistance output.
Claims (5)
1. contactless fuel level sensor, comprise the float (1) and the connecting rod (2) that link together, it is characterized in that: default receiving space (32) sealing and fixing has wiring board (4) in the holder (3), have power circuit (A), magnetic rotation scrambler (B), simulation microcontroller (C), digital regulation resistance (D) on the wiring board, swing arm (5) is that the axle center is hinged on the holder (3) with bearing pin (6), and the induced magnet (B1) that sealing and fixing has magnetic rotation scrambler (B) is gone up in swing arm (5);
Power circuit (A) is given magnetic rotation scrambler (B), simulation microcontroller (C), digital regulation resistance (D) power supply, the detection signal of magnetic rotation scrambler (B) is converted into resistance variations through simulation microcontroller (C), and this resistance variations is handled through digital regulation resistance (D) and carried out resistance output.
2. contactless fuel level sensor according to claim 1 is characterized in that: magnetic rotation scrambler (B) is that AS5030 type, simulation microcontroller (C) are the CAT5113 type for 78F9202 type, digital regulation resistance (D).
3. contactless fuel level sensor according to claim 1 is characterized in that: form springhole (51) in the swing arm (5).
4. contactless fuel level sensor according to claim 1 is characterized in that: the opening part ultrasonic heat of the default receiving space (32) of the holder that plastic material is manufactured (3) is dissolved with plastic cement cover plate (31).
5. contactless fuel level sensor according to claim 3 is characterized in that: wiring pin (41) injection moulding of each circuit unit is fixed on the plastic cement cover plate (31) in the wiring board (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202202159U CN201548292U (en) | 2009-10-26 | 2009-10-26 | Non-contact type oil level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202202159U CN201548292U (en) | 2009-10-26 | 2009-10-26 | Non-contact type oil level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201548292U true CN201548292U (en) | 2010-08-11 |
Family
ID=42603467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202202159U Expired - Fee Related CN201548292U (en) | 2009-10-26 | 2009-10-26 | Non-contact type oil level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201548292U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401683A (en) * | 2011-11-23 | 2012-04-04 | 蒋勤舟 | Electronic oil level sensor and control method thereof |
| CN103270398A (en) * | 2010-12-27 | 2013-08-28 | Abb技术有限公司 | Oil level indicator with electronic output |
| CN103759790A (en) * | 2013-12-24 | 2014-04-30 | 合肥邦立电子股份有限公司 | Oscillating bar type liquid level sensor |
| CN105444841A (en) * | 2015-12-01 | 2016-03-30 | 重庆铭凯科技发展有限公司 | Electromechanical dual-purpose oil pointer |
| CN105444842A (en) * | 2015-12-01 | 2016-03-30 | 重庆铭凯科技发展有限公司 | Electronic oil pointer |
-
2009
- 2009-10-26 CN CN2009202202159U patent/CN201548292U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270398A (en) * | 2010-12-27 | 2013-08-28 | Abb技术有限公司 | Oil level indicator with electronic output |
| CN102401683A (en) * | 2011-11-23 | 2012-04-04 | 蒋勤舟 | Electronic oil level sensor and control method thereof |
| CN102401683B (en) * | 2011-11-23 | 2013-04-10 | 蒋勤舟 | Electronic oil level sensor and control method thereof |
| CN103759790A (en) * | 2013-12-24 | 2014-04-30 | 合肥邦立电子股份有限公司 | Oscillating bar type liquid level sensor |
| CN105444841A (en) * | 2015-12-01 | 2016-03-30 | 重庆铭凯科技发展有限公司 | Electromechanical dual-purpose oil pointer |
| CN105444842A (en) * | 2015-12-01 | 2016-03-30 | 重庆铭凯科技发展有限公司 | Electronic oil pointer |
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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: 20100811 Termination date: 20141026 |
|
| EXPY | Termination of patent right or utility model |