CN106404123A - Liquid level sensor for automobile - Google Patents
Liquid level sensor for automobile Download PDFInfo
- Publication number
- CN106404123A CN106404123A CN201611056828.4A CN201611056828A CN106404123A CN 106404123 A CN106404123 A CN 106404123A CN 201611056828 A CN201611056828 A CN 201611056828A CN 106404123 A CN106404123 A CN 106404123A
- Authority
- CN
- China
- Prior art keywords
- liquid level
- sensor
- level sensor
- sensor unit
- magnetic
- 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.)
- Pending
Links
Classifications
-
- 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
- G01F23/30—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 floats
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses a liquid level sensor for an automobile. The liquid level sensor structurally comprises a plug body, a sensor assembly and a sensor body, wherein the plug body is connected with the sensor assembly; the sensor body is fixed at the lower end of the sensor assembly; the sensor body comprises a sliding rod, a magnetic float and a PCB (Printed Circuit Board); the magnetic float is fixed on a magnetic ring through a plurality of magnetic steel; the magnetic ring can slide on the sliding rod; the PCB is located in the sliding rod and is connected with the sensor assembly; the PCB is provided with a reed switch; and when the magnetic float is driven by a liquid level to move up and down, the PCB is used for determining the height of the liquid level according to the change of the reed switch along with the magnetic flux; and the liquid level sensor for the automobile has the advantages of simple structure and accuracy in position measurement.
Description
Technical field
The present invention relates to sensor field, more particularly, to a kind of for the liquid level sensor on automobile.
Background technology
The structure that magnetic floating ball liquidometer is different from other floating ball lever meters differs primarily in that it is based on buoyancy and magnetostatic
Field principle design produces, the ball float with magnet（Abbreviation ball float）Position in measured medium is affected by buoyancy：Liquid
The change of position leads to change, the magnet in ball float and the sensor of magnetic float position（Magnetic reed switch）Effect, makes series winding enter electricity
The element on road（As fixed value resistance）Quantity change, and then so that the electrical quantities of appliance circuit system is changed, that is,
Make the change of magnetic float position cause the change of electrical quantities, reflect the feelings of liquid level in container by detecting the change of electrical quantities
Condition, this instrument can directly output resistance value signal it is also possible to cooperation R-I transducer, output current value（4～20mA）Signal；
Coordinate other transducers, output voltage signal and its switching signal simultaneously, thus realizing remote transmission and the control of the signal of telecommunication, existing
High with the presence of magnetic floating ball liquidometer cost, the shortcomings of not being durable.
Content of the invention
The present invention is directed to the disadvantages mentioned above of existing product, proposes following design, this automobile liquid level sensor structure
Including header body, sensor unit, sensing head body, described header body is connected with described sensor unit, described sensing
Device body is fixed on the lower end of institute's sensor unit, and described sensor body includes slide bar, magnetic float, pcb board, described magnetic float
It is fixed on magnetosphere by some magnet steel, described magnetosphere can slide on described slide bar, described pcb board is located in described slide bar
Portion, and be connected with described sensor unit, described pcb board there is tongue tube, will be integrated to the PCB of sensor, plug,
Reduce small product size；
Preferably, described tongue tube is wrapped with high temperature resistant silicon sebific duct, extend the life of product of tongue tube；
Preferably, described tongue tube have one or more, along described pcb board genesis analysis, multiple tongue tubes and link electricity
Road plate, can more accurately detect liquid level；
Preferably, there being the slot for the insertion of described header body on described sensor unit, it passes through this slot and described plug
Body connects, easy to disassemble and local failure replacement.
In sum, the present invention, for existing product, has small volume, replacing easy to disassemble, and detection is accurately
Feature.
Brief description
Fig. 1 is the present invention the first visual angle schematic diagram.
Fig. 2 is vertical section schematic diagram of the present invention.
Fig. 3 is principle of the invention figure.
Specific embodiment
Embodiment one
This automobile liquid level sensor structure includes header body 11, sensor unit 12, sensing head body, described header body
11 are connected with described sensor unit 12, and described sensor body is fixed on the lower end of institute's sensor unit 12, described sensor
Body includes slide bar 13, magnetic float 14, pcb board 21, and described magnetic float 14 is fixed on magnetosphere 16 by some magnet steel 15, described
Magnetosphere 16 can slide on described slide bar, described pcb board 21 be located at described slide bar 13 inside, and with described sensor unit 12
Connect, described pcb board 21 bottom is fixed with tongue tube 22, will be integrated to the PCB of sensor, plug, reduces product body
Long-pending；
Preferably, described tongue tube 22 is wrapped with high temperature resistant silicon sebific duct, extend the life of product of tongue tube；
Preferably, described tongue tube has one；
Preferably, the slot 23 for the insertion of described header body 11 is had on described sensor unit 12, its pass through this slot 23 with
Described header body 11 connects, easy to disassemble and local failure replacement.
These are only preferred embodiments of the present invention, therefore the scope of present invention enforcement can not be limited according to this, that is, according to the present invention
Equivalence changes and decoration that description is made, all should belong in the range of present invention covering.
Claims (4)
1. a kind of automobile liquid level sensor it is characterised in that：Its structure includes header body, sensor unit, sensing head
Body, described header body is connected with described sensor unit, and described sensor body is fixed on the lower end of institute's sensor unit,
Described sensor body includes slide bar, magnetic float, pcb board, and described magnetic float is fixed on magnetosphere by some magnet steel, described magnetic
Circle can slide on described slide bar, and described pcb board is located inside described slide bar, and is connected with described sensor unit, described
Tongue tube is had on pcb board.
2. according to claim 1 automobile liquid level sensor it is characterised in that：Described tongue tube is wrapped with high temperature resistant silicon
Sebific duct.
3. according to claim 1 automobile liquid level sensor it is characterised in that：Described tongue tube has one or more, edge
Described pcb board genesis analysis.
4. according to claim 1 automobile liquid level sensor it is characterised in that：Have on described sensor unit and insert for described
The slot of head body insertion, it is connected with described header body by this slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056828.4A CN106404123A (en) | 2016-11-26 | 2016-11-26 | Liquid level sensor for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611056828.4A CN106404123A (en) | 2016-11-26 | 2016-11-26 | Liquid level sensor for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404123A true CN106404123A (en) | 2017-02-15 |
Family
ID=58081974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611056828.4A Pending CN106404123A (en) | 2016-11-26 | 2016-11-26 | Liquid level sensor for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404123A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328453A (en) * | 2017-08-25 | 2017-11-07 | 浙江胜王传感科技有限公司 | A kind of more firm fuel level sensor of shell |
| CN111964754A (en) * | 2020-08-25 | 2020-11-20 | 芜湖联诺电器有限公司 | Liquid level sensor for special-shaped oil tank |
-
2016
- 2016-11-26 CN CN201611056828.4A patent/CN106404123A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328453A (en) * | 2017-08-25 | 2017-11-07 | 浙江胜王传感科技有限公司 | A kind of more firm fuel level sensor of shell |
| CN111964754A (en) * | 2020-08-25 | 2020-11-20 | 芜湖联诺电器有限公司 | Liquid level sensor for special-shaped oil tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |