CN2537000Y - Digital fuel gauge contactless digital fuel meter - Google Patents
Digital fuel gauge contactless digital fuel meter Download PDFInfo
- Publication number
- CN2537000Y CN2537000Y CN 02221578 CN02221578U CN2537000Y CN 2537000 Y CN2537000 Y CN 2537000Y CN 02221578 CN02221578 CN 02221578 CN 02221578 U CN02221578 U CN 02221578U CN 2537000 Y CN2537000 Y CN 2537000Y
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- CN
- China
- Prior art keywords
- fuel
- utility
- model
- magnet
- rotor
- 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
The utility model relates to a non contact digital display fuel gauge used for indicating the fuel stored in the automobile fuel tank, comprising a meter case (1), an A/D converter (2) in the meter, a single chip microcomputer (3), an LED digital display (4) and a power supply (5); the utility model is characterized in that the non contact displacement sensing mechanism arranged on the oil tank comprises a rotor (7), a mighty magnet (8), a magnetic-sensing element (9), a preamplifier (10), a rotating arm (11)and a float (12). The utility model is characterized in that the magnetic-sensing element is used to measure the angular displacement for realizing non contact, thus, the oil level and the oil quantity can be measured, the linear problem of sensor output can be solved from structure and data processing, the oil quantity in the oil tank can be digitally displayed through data processing. The utility model has the advantages that the measurement precision is higher than the traditional fuel gauge; the fuel gauge is highly reliable, has long service life and is favorable to driver for mastering the fuel consumption and oil quantity accurately at any moment.
Description
Technical field
The utility model relates to fuel gauge, particularly is used to indicate the contactless digital display fuel gauge of the trapped fuel amount in the fuel tank of vehicle.
Technical background
At present, the trapped fuel amount in the electrothermal fuel gauge indication fuel tank commonly used on the automobile.The electrothermal fuel gauge is made up of the fuel oil face indicating gauge and the fuel head sensor of band voltage stabilizer.Electric current, is got back to accumulator and is formed the closed-loop path through the bimetallic strip of voltage stabilizer, the resistance wire of fuel oil face indicating gauge, the variable resistor and the skate contact of fuel head sensor from accumulator.When the fuel head in the fuel tank is zero, float position on the pasta is minimum, its skate contact is positioned at variable-resistance right-hand member, at this moment sensor is exported the resistance maximum and the electric current minimum in loop, the resistance wire of indicating gauge only gives out the heat of pettiness, make bimetallic strip produce a spot of thermal deformation, the fuel gauge pointer correspondingly refers on " 0 " scale mark.Along with the increase of fuel head, a left side is to move gradually for the skate contact, and loop current increases thereupon thereupon reducing to cause sensor output resistance, and the fuel gauge pointer also increases deflection to the right gradually because of the thermal deformation of bimetallic strip, indicates corresponding reading.When fuel oil was full of fuel tank, it is maximum that the electric current in loop reaches, and pointer points on the rightmost scale mark.This fuel level gauge is because the restriction on structure and the principle, only can reflect the roughly variation of amount of fuel from low level to high-order interval, linear difference and can not indicate accurate amount of fuel numerical value, and wire-wound resistor weares and teares easily with sliding contact and is intercepted poor reliability by greasy dirt.In practice, the consumption that needs accurately to grasp the vehicle fuel amount changes, so that understand the performance change of automobile; In the way of travelling, the driver need determine refueling time according to amount of fuel and mileage, and when fuel up, the driver also needs to reflect exactly the numerical value that adds amount of fuel.
The purpose of this utility model is the deficiency that exists at prior art, provides a kind of and can accurately indicate amount of fuel, reliable and stable contactless digital display fuel gauge.
The content of innovation and creation
The purpose of this utility model is achieved through the following technical solutions: contactless digital display fuel gauge comprises meter case, be contained in A/D converter, one chip microcomputer, LED nixie display in the instrument, power supply is characterized in that: be installed in contactless displacement sensing mechanism on the fuel tank by support, be contained in rotor on the support, be fixed on the powerful magnet on the rotor circumference, the magnet-sensitive element that is contained in rotor center, the prime amplifier that is connected with magnet-sensitive element, be connected the swivel arm of rotor one end and the float that is connected on the swivel arm is formed; Prime amplifier is connected with A/D converter.Because the utility model has been realized oncontacting and revealed, and reliability of products is improved greatly, prolong serviceable life; Help controlling transportation cost, increase economic efficiency.
Described contactless digital display fuel gauge, it is characterized in that: float places in the fuel tank, with the pasta lifting and drive swivel arm rotation, magnet-sensitive element changes into corresponding electric signal with the angular displacement of swivel arm rotation through prime amplifier, reach A/D converter and convert digital signal to, after one chip microcomputer is handled, by the oil mass in the LED nixie display demonstration fuel tank.The utility model uses the displacement of magnet-sensitive element measured angular, measure the pasta height with this, thereby the reflection oil mass how much, on structure, solved the linear problem of sensor output with data processing, and pass through data processing, show oil mass in the fuel tank with numeral,, help the driver and accurately grasp fuel consumption and the oil mass situation that adds in the fuel tank at any time than traditional fuel gauge precision height.
Description of drawings
Fig. 1 (a) is the utility model table body type synoptic diagram especially, (b) is the left view of (a).
Fig. 2 (c) is the contactless displacement sensing structural scheme of mechanism of the utility model, (d) is the left view of (c).
Fig. 3 is the utility model electrical equipment connection diagram.
Fig. 4 is the utility model circuit diagram.
Embodiment
Referring to accompanying drawing, A/D converter 2 is connected single-sheet miniature calculate 3, one chip microcomputer 3 connects LED nixie display 4 and is contained in the instrument, and meter case 1 is installed on the bridge; The support 6 of contactless displacement sensing mechanism is installed on the fuel tank, powerful magnet 8 is fixed on the circumference of rotor 7, and magnet-sensitive element 9 is contained in the center of rotor 7, and an end of rotor 7 is connected with an end of swivel arm 11, the other end of swivel arm 11 is connected with float 12, and float 12 places in the fuel tank; Magnet-sensitive element 9 is connected with prime amplifier 10, prime amplifier 10 with A/D converter 2 is connected; Energized 5 then.Float 12 is with the pasta lifting and drive swivel arm 11 rotations, magnet-sensitive element 9 changes into corresponding electric signal with the angular displacement of swivel arm 11 rotations through prime amplifier 10, reach A/D converter 2 and convert digital signal to, after one chip microcomputer 3 is handled, by the oil mass in the LED nixie display 4 demonstration fuel tanks.
Claims (2)
1, contactless digital display fuel gauge comprises meter case (1), be contained in A/D converter (2), one chip microcomputer (3), LED nixie display (4) in the instrument, power supply (5) is characterized in that: be installed in contactless displacement sensing mechanism on the fuel tank by support (6), be contained in rotor (7) on the support, be fixed on the powerful magnet (8) on the rotor circumference, the magnet-sensitive element (9) that is contained in rotor center, the prime amplifier (10) that is connected with magnet-sensitive element, the swivel arm (11) that is connected rotor one end and the float (12) that is connected on the swivel arm is formed; Prime amplifier (10) is connected with A/D converter (2).
2, the described contactless digital display fuel gauge of claim 1, it is characterized in that: float (12) places in the fuel tank, with the pasta lifting and drive swivel arm (11) rotation, magnet-sensitive element (9) changes into corresponding electric signal with the angular displacement of swivel arm (11) rotation through prime amplifier (10), reach A/D converter (2) and convert digital signal to, handle through one chip microcomputer (3), by the oil mass in LED nixie display (4) the demonstration fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221578 CN2537000Y (en) | 2002-02-06 | 2002-02-06 | Digital fuel gauge contactless digital fuel meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221578 CN2537000Y (en) | 2002-02-06 | 2002-02-06 | Digital fuel gauge contactless digital fuel meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2537000Y true CN2537000Y (en) | 2003-02-19 |
Family
ID=33699657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02221578 Expired - Fee Related CN2537000Y (en) | 2002-02-06 | 2002-02-06 | Digital fuel gauge contactless digital fuel meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2537000Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7013728B2 (en) | 2003-01-09 | 2006-03-21 | Hitachi Ltd. | System for detecting level of liquid in tank |
| CN102023042A (en) * | 2010-08-05 | 2011-04-20 | 深圳市赛格导航科技股份有限公司 | Method, system and vehicle for detecting liquid quantity of box body by adopting detecting apparatus |
| CN102221393A (en) * | 2010-04-13 | 2011-10-19 | 王恺 | Signal source device for accurately measuring oil quantity of oil tank of motor vehicle |
| CN105444842A (en) * | 2015-12-01 | 2016-03-30 | 重庆铭凯科技发展有限公司 | Electronic oil pointer |
-
2002
- 2002-02-06 CN CN 02221578 patent/CN2537000Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7013728B2 (en) | 2003-01-09 | 2006-03-21 | Hitachi Ltd. | System for detecting level of liquid in tank |
| CN102221393A (en) * | 2010-04-13 | 2011-10-19 | 王恺 | Signal source device for accurately measuring oil quantity of oil tank of motor vehicle |
| CN102023042A (en) * | 2010-08-05 | 2011-04-20 | 深圳市赛格导航科技股份有限公司 | Method, system and vehicle for detecting liquid quantity of box body by adopting detecting apparatus |
| CN102023042B (en) * | 2010-08-05 | 2013-02-13 | 深圳市赛格导航科技股份有限公司 | Method, system and vehicle for detecting liquid quantity of box body by adopting detecting apparatus |
| 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 | ||
| 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 |