CN2530834Y - Digital oil level display for automotive vehicle - Google Patents
Digital oil level display for automotive vehicle Download PDFInfo
- Publication number
- CN2530834Y CN2530834Y CN 02203197 CN02203197U CN2530834Y CN 2530834 Y CN2530834 Y CN 2530834Y CN 02203197 CN02203197 CN 02203197 CN 02203197 U CN02203197 U CN 02203197U CN 2530834 Y CN2530834 Y CN 2530834Y
- Authority
- CN
- China
- Prior art keywords
- oil level
- oil
- oil pipe
- digital
- float
- 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 digital vehicle oil level indicator comprises an oil pipe which is made of insulation material. An oil passing opening is arranged on the bottom lateral of the oil pipe and an air opening is arranged on the top. A float is arranged in the oil pipe. A pair of capacitance pole boards are arranged under the float and on the bottom of the oil pipe, which are in series connection with a high frequency signal source and a measuring resistance via conducting wires. One end of the measuring resistance is orderly connected with an amplifier and a detection circuit, and then is connected with a digital meter. The utility model has the advantage that the oil level is changed into electric signal by the capacitance pole boards moving with the oil level, and then the oil level is displayed by the digital displaying meter. The digital meter can be arranged in the cab for convenient observation.
Description
Technical field
The utility model relates to a kind of self-propelled vehicle oil mass meter, particularly a kind of digital self-propelled vehicle oil level telltale.
Background technology
I disclose a kind of self-propelled vehicle oil mass meter in the patent No. is the utility model patent of ZL00205917.7, the basic structure of this oil measurer be one with shell that fuel tank is communicated with on transparent perpendicular elongated slot is arranged, there is scale at its edge, by this transparent elongated slot observation oil level.The shortcoming of this oil measurer is just can observe oil level by the driver must arrive fuel tank, very inconvenience; And oil level shows also not too obvious.
Summary of the invention
The purpose of this utility model just provides a kind of digital self-propelled vehicle oil level telltale that can just can observe oil level at operator's compartment.
Technical solutions of the utility model are: comprise the oil pipe of being made by insulating material, in its bottom sides logical hydraulic fluid port is arranged, at its top vent is arranged, float is arranged within it, below this float and oil pipe in the bottom a pair of capacitor plate is arranged, this capacitor plate is connected with high-frequency signal source and measuring resistor by lead, and measuring resistor one end is connected with digital watch after connecting amplifier and detecting circuit successively.
The utility model has the advantages that to move with oil level by capacitor plate oil level is transformed into electric signal, directly demonstrate the height of oil level then with the numeric display gauge outfit, digital watch can be installed in operator's compartment, and it is convenient to observe.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings
Fig. 1 is the later-model overall structure scheme drawing of this reality;
Fig. 2 is the embodiment circuit diagram of amplifier of the present utility model, detector;
Fig. 3 is oil pipe of the present utility model and motor vehicle oil tank bonded assembly scheme drawing.
The specific embodiment
Referring to Fig. 1, the utility model comprises the oil pipe of being made by glass or other insulating materials 1, in its bottom sides logical hydraulic fluid port 2 is arranged, and at its top vent is arranged, and this vent is connected with bend pipe 3.Float 4 is arranged in oil pipe 1, below this float 4 and oil pipe in the bottom a pair of capacitor plate 5 is arranged, this capacitor plate 5 is connected with high-frequency signal source E and measuring resistor R1 by lead 6, is connected with digital watch G after connecting amplifier B and detecting circuit F behind the measuring resistor R1 two ends taking-up voltage signal successively.
Referring to Fig. 2, amplifier B of the present utility model is by amplifier A, R2-R4 and C
1Form C
1The R1 upper end of front end and Fig. 1 be connected C
1The rear end be connected with the end of R2 and R4, the other end of R2 is connected with the backward end of A, its forward end is by resistance R 3 ground connection, the mouth of another termination A of R4, this mouth is connected with the input end of detecting circuit F.
Detecting circuit F comprises detector diode D, and its positive pole is connected with the mouth of amplifier B, and its negative pole is connected with the end of C2 and R5, the other end ground connection of C3, the other end of R5 is connected with the end of C3 and R6, C3 other end ground connection, and the other end of R6 is connected with digital watch.R6 is a potential device, can regulate the full scale of gauge outfit.
Referring to Fig. 3, the logical hydraulic fluid port 2 of the lower end of oil pipe 1 of the present utility model is connected with the original mouth of pipe 9 in motor vehicle oil tank 8 bottoms by pipeline 7, and oil pipe 1 is fixed in the side of fuel tank 8 and makes it vertical with horizontal surface.With the as far as possible close oil pipe of circuit part (amplifier B and detecting circuit F), to reduce the influence of stray capacitance.Digital watch G is arranged on operator's compartment.
Principle of work of the present utility model is: the pasta in the oil pipe 1 is identical with oil levels in the fuel tank 8, and the float 4 in the oil pipe drives capacitor plate 5 and moves capacitor C x of two capacitor plates, 5 formations with oil level.The high-frequency signal that HF signal generator E produces is by electric current I=2 π fu ε S/d of Cx, and the f in the formula is the frequency of high-frequency signal source, and U is a signal source voltage, and ε is a specific inductance capacity, and S is the area of capacitor plate 5, and d is the distance of two capacitor plates 5.Can draw oil level (capacitor plate spacing) by measuring electric current I (or voltage) as can be known by following formula.Behind amplifier B and detecting circuit F, become d. c. voltage signal from the R1 taking-up with I correspondent voltage signal, change magnification factor, and regulate the numerical value that R6 can make digital watch G demonstration oil level by the feedback resistance R4 that regulates amplifier A.
Claims (1)
1, a kind of digital self-propelled vehicle oil level telltale, it is characterized in that: comprise the oil pipe of making by insulating material, in its bottom sides logical hydraulic fluid port is arranged, at its top vent is arranged, float is arranged within it, below this float and the bottom in the oil pipe a pair of capacitor plate is arranged, this capacitor plate is connected with high-frequency signal source and measuring resistor by lead, measuring resistor one end is connected with digital watch after connecting amplifier and detecting circuit successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203197 CN2530834Y (en) | 2002-02-07 | 2002-02-07 | Digital oil level display for automotive vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203197 CN2530834Y (en) | 2002-02-07 | 2002-02-07 | Digital oil level display for automotive vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2530834Y true CN2530834Y (en) | 2003-01-15 |
Family
ID=33685498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02203197 Expired - Fee Related CN2530834Y (en) | 2002-02-07 | 2002-02-07 | Digital oil level display for automotive vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2530834Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323416A (en) * | 2016-09-23 | 2017-01-11 | 惠州华阳通用电子有限公司 | Capacitive oil mass measuring device |
| CN109580075A (en) * | 2018-12-11 | 2019-04-05 | 武汉大学 | A kind of hydraulic pressure automatic measurement system |
| CN109974809A (en) * | 2019-04-24 | 2019-07-05 | 北京晨淼科技有限公司 | Oil level measuring device |
-
2002
- 2002-02-07 CN CN 02203197 patent/CN2530834Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323416A (en) * | 2016-09-23 | 2017-01-11 | 惠州华阳通用电子有限公司 | Capacitive oil mass measuring device |
| CN109580075A (en) * | 2018-12-11 | 2019-04-05 | 武汉大学 | A kind of hydraulic pressure automatic measurement system |
| CN109974809A (en) * | 2019-04-24 | 2019-07-05 | 北京晨淼科技有限公司 | Oil level measuring device |
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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 |