CN207540624U - Novel digital display electronic liquid level gauge based on equidistant contact - Google Patents
Novel digital display electronic liquid level gauge based on equidistant contact Download PDFInfo
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- CN207540624U CN207540624U CN201721606340.4U CN201721606340U CN207540624U CN 207540624 U CN207540624 U CN 207540624U CN 201721606340 U CN201721606340 U CN 201721606340U CN 207540624 U CN207540624 U CN 207540624U
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Abstract
The utility model discloses a kind of novel digital display electronic liquid level gauges based on equidistant contact, and including insulated mounting plate and the conductive contact being serially connected, each conductive contact is plugged in insulated mounting plate.High level or low transition output are digital signal by level catch circuit by each conductive contact.The parallel-to-serial converter is electrically connected by cable with level catch circuit, and above-mentioned digital signal is converted output as parallel digital signal by the parallel-to-serial converter.The parallel-to-serial converter is electrically connected by SPI interface with main control unit, and above-mentioned parallel digital signal is converted output as serial digital signal by the parallel-to-serial converter.Novel digital display electronic liquid level gauge based on equidistant contact disclosed in the utility model equally spacedly sets several conductive contacts along liquid level vertical direction and is immersed in the grounding body of conducting liquid, judges liquid level position according to the high low potential of each conductive contact.
Description
Technical field
The utility model belongs to field of measuring techniques, and in particular to a kind of novel digital display electronic level based on equidistant contact
Ruler.
Background technology
Liquid level ruler can navigation, it is motor-driven, ensure in indicate the filling liquid state relation of each liquid tank.Traditional mechanical level ruler exists
When measuring the liquid level of each liquid tank, complex steps and it can not omit.Need to judge whether pressure meets measurement item of uncapping in liquid tank first
Part, crewman need to operate valve, constantly observation pressure gauge ensures liquid tank internal and external pressure balance, then open liquid tank sealing cover, repeatedly
Insertion/pull-out liquid level ruler carries out the sequence of operations such as reading and obtains correct liquid level trace line.It, need to be by liquid level ruler after the completion of reading
It correctly puts back to, ensures liquid tank good seal, also need to restore pressure original in liquid tank sometimes.In face of it is large number of, characteristic is different
Various liquid tanks, the original pressure state of liquid tank will be influenced with filling pressure discharge operations simultaneously by reading liquid level using liquid level ruler mode,
The meetings such as liquid tank internal liquid shakes, fluctuation produce bigger effect measurement.Generally requiring more people in measurement process coordinates ability complete
Into taking considerable time and energy.Meanwhile there is also subjectivities for the reading of liquid level ruler, inevitably introduce measurement error.
It is worth noting that, liquid level ruler is suspended in by free gravity inside liquid tank, shaken in liquid tank internal liquid,
It is difficult to correct liquid level is measured by liquid level ruler.When substantially motor-driven, liquid level ruler is not fixed with liquid tank, easily in liquid tank
Wall collides.Mechanical level ruler existing defects in liquid level is measured, it is mainly complex for operation step, it takes considerable time；Accidentally
It is poor big；Need duplicate measurements；Means are original；Under special circumstances (liquid tank pressurizes, the ullage of motor-driven generation shakes etc.), liquid level
Ruler can not measure.
Utility model content
The utility model is directed to the situation of the prior art, for above-mentioned condition, provides a kind of based on the novel of equidistant contact
Digital display electronic liquid level ruler.
The utility model uses following technical scheme, and the novel digital display electronic liquid level gauge based on equidistant contact includes：
Insulated mounting plate and the conductive contact being serially connected, each conductive contact are plugged in insulated mounting plate；
Level catch circuit, parallel-to-serial converter and main control unit, wherein：
High level or low transition output are digital signal by level catch circuit by each conductive contact；
The parallel-to-serial converter is electrically connected by cable with level catch circuit, and the parallel-to-serial converter is by above-mentioned number
Word signal converts output as parallel digital signal；
The parallel-to-serial converter is electrically connected by SPI interface with main control unit, the parallel-to-serial converter by it is above-mentioned simultaneously
Row digital signal converts output as serial digital signal.
According to above-mentioned technical proposal, the novel digital display electronic liquid level gauge based on equidistant contact further includes Parallel Digital amount
Interface, the Parallel Digital amount interface are set between level catch circuit and parallel-to-serial converter.
According to above-mentioned technical proposal, the level catch circuit includes semi-conductor electricity sub switch, and the semiconductor electronic is opened
Pass connects with the contact site of conductive contact.
According to above-mentioned technical proposal, the semi-conductor electricity sub switch includes but not limited to P-channel metal-oxide-semiconductor, IGBT, PNP tri-
Pole pipe.
According to above-mentioned technical proposal, the level catch circuit further includes base resistance, the contact site of the conductive contact
Connected by base resistance with the base stage of PNP triode, the grounded collector of the PNP triode, the hair of the PNP triode
Emitter-base bandgap grading is external in Parallel Digital amount interface.
According to above-mentioned technical proposal, above-mentioned PNP triode uses discrete patch type PNP triode.
Novel digital display electronic liquid level gauge based on equidistant contact disclosed in the utility model, advantage is, along liquid
Face vertical direction equally spacedly sets several conductive contacts and is immersed in the grounding body of conducting liquid, according to each conductive contact
High low potential judge liquid level position, realize that equidistant contact measures liquid level function.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the preferred embodiment in the utility model.
Fig. 2 is the conductive contact distribution schematic diagram of the preferred embodiment in the utility model.
Fig. 3 is the circuit structure diagram of the preferred embodiment in the utility model.
Fig. 4 is the circuit structure diagram of the preferred embodiment in the utility model.
Fig. 5 is the level catch circuit diagram on the basis of Fig. 1 and Fig. 2.
Fig. 6 is the schematic diagram of the improved level catch circuit of the preferred embodiment in the utility model.
Specific embodiment
The utility model discloses a kind of novel digital display electronic liquid level gauge based on equidistant contact, with reference to preferred implementation
Example, is further described specific embodiment of the present utility model.
Referring to Figure 1 of the drawings and Fig. 2, Fig. 1 show the mould of the novel digital display electronic liquid level gauge based on equidistant contact
Block structure, Fig. 2 shows the conductive contact distribution schematic diagrams of the novel digital display electronic liquid level gauge based on equidistant contact.
It is noted that it is described based on the novel digital display electronic liquid level gauge of equidistant contact along between liquid level vertical direction etc.
Several conductive contacts are set away from ground, while are additionally provided with a grounding body flooded by conducting liquid.When liquid level does not flood conduction
During contact, insulating air is full of between the conductive contact and grounding body that are not submerged, therefore the conductive contact output not being submerged
High potential.When liquid level rises, when gradually flooding conductive contact, the conductive contact and grounding body being submerged are short-circuit, therefore are submerged
Conductive contact output low potential.In other words, all conductive contacts more than liquid level be high potential, and positioned at liquid level with
Under all conductive contacts by conducting liquid short circuit export low potential.According to current potential difference it may determine that the real-time position of liquid level
It puts.
It is noted that for corrosion is avoided to cause the security risks such as leakage current, the end of above-mentioned conductive contact is preferably adopted
It is made of the graphite not with conducting liquid (for example, seawater) electrochemical reaction.Conductive contact is made according to common metal, with leading
The contact for a long time of electro-hydraulic body may lead to conductive contact, and there are weak currents at work.
Preferably, the vertical interval of adjacent conductive contact is 5 millimeters；Every group of conductive contact is 32, altogether 14 groups.Change and
Yan Zhi, the resolving power of the novel digital display electronic liquid level gauge based on equidistant contact and accuracy are correspondingly controlled at 5 millimeters.
Preferably, each conductive contact be external in independently of each other pull-up resistor (using 4 conductive contacts as example in Fig. 1,
It is correspondingly provided with R1 to R4 and amounts to 4 pull-up resistors).Meanwhile each conductive contact is external in level catch circuit simultaneously, passes through
Level catch circuit obtains the level state (high level or low level) of each conductive contact.
According to above preferred embodiment, the novel digital display electronic liquid level gauge based on equidistant contact includes insulated mounting plate
With the conductive contact being serially connected, each conductive contact is plugged in insulated mounting plate.
Referring to Fig. 3 to Fig. 6 of attached drawing, according to above preferred embodiment, the novel digital display electronics based on equidistant contact
Liquid level ruler further includes level catch circuit, parallel-to-serial converter and main control unit；Wherein, each conductive contact passes through level catch
High level or low transition output are digital signal (Fig. 5) by circuit；Wherein, the parallel-to-serial converter and level catch
Circuit is electrically connected by cable, and above-mentioned digital signal is converted output as parallel digital signal by the parallel-to-serial converter；Wherein,
The parallel-to-serial converter is electrically connected (Fig. 3) by SPI interface with main control unit, and the parallel-to-serial converter is by above-mentioned and line number
The conversion output of word signal is the serial digital signal that can be identified by main control unit.
Further, the novel digital display electronic liquid level gauge based on equidistant contact further includes Parallel Digital amount interface (figure
4), the Parallel Digital amount interface is set between level catch circuit and parallel-to-serial converter, is led so that batch input is each
The parallel digital signal of electric contact.
Further, the level catch circuit includes semi-conductor electricity sub switch, the semi-conductor electricity sub switch and conduction
The contact site of contact connects.Wherein, the semi-conductor electricity sub switch includes but not limited to tri- pole of P-channel metal-oxide-semiconductor, IGBT and PNP
Pipe.For example, the level catch circuit further includes base resistance, the contact site of the conductive contact passes through base resistance and PNP
The base stage of triode connects, the grounded collector of the PNP triode, and the emitter of the PNP triode is external in and line number
Word amount interface (Fig. 6).
Wherein, above-mentioned PNP triode preferably uses discrete patch type PNP triode.
For a person skilled in the art, the technical solution recorded in foregoing embodiments can still be repaiied
Change or equivalent replacement is carried out to which part technical characteristic, within the spirit and principle of the utility model, that is made is any
Modification, equivalent replacement, improvement etc., should be included in the scope of protection of the utility model.
Claims (6)
1. a kind of novel digital display electronic liquid level gauge based on equidistant contact, which is characterized in that including：
Insulated mounting plate and the conductive contact being serially connected, each conductive contact are plugged in insulated mounting plate；
Level catch circuit, parallel-to-serial converter and main control unit, wherein：
High level or low transition output are digital signal by level catch circuit by each conductive contact；
The parallel-to-serial converter is electrically connected by cable with level catch circuit, and the parallel-to-serial converter believes above-mentioned number
Output number is converted as parallel digital signal；
The parallel-to-serial converter is electrically connected by SPI interface with main control unit, and the parallel-to-serial converter is by above-mentioned and line number
Word signal converts output as serial digital signal.
2. the novel digital display electronic liquid level gauge according to claim 1 based on equidistant contact, which is characterized in that described to be based on
The novel digital display electronic liquid level gauge of equidistant contact further includes Parallel Digital amount interface, and the Parallel Digital amount interface is set to level
Between lock-in circuit and parallel-to-serial converter.
3. the novel digital display electronic liquid level gauge according to claim 2 based on equidistant contact, which is characterized in that the level
Lock-in circuit includes semi-conductor electricity sub switch, and the semi-conductor electricity sub switch connects with the contact site of conductive contact.
4. the novel digital display electronic liquid level gauge according to claim 3 based on equidistant contact, which is characterized in that described partly to lead
Body electronic switch includes but not limited to P-channel metal-oxide-semiconductor, IGBT, PNP triode.
5. the novel digital display electronic liquid level gauge according to claim 4 based on equidistant contact, which is characterized in that the level
Lock-in circuit further includes base resistance, and the contact site of the conductive contact is connected by base resistance with the base stage of PNP triode,
The grounded collector of the PNP triode, the emitter of the PNP triode are external in Parallel Digital amount interface.
6. the novel digital display electronic liquid level gauge according to claim 4 based on equidistant contact, which is characterized in that above-mentioned PNP
Triode uses discrete patch type PNP triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606340.4U CN207540624U (en) | 2017-11-27 | 2017-11-27 | Novel digital display electronic liquid level gauge based on equidistant contact |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606340.4U CN207540624U (en) | 2017-11-27 | 2017-11-27 | Novel digital display electronic liquid level gauge based on equidistant contact |
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| Publication Number | Publication Date |
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| CN207540624U true CN207540624U (en) | 2018-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806918A (en) * | 2017-11-27 | 2018-03-16 | 浙江星天海洋科学技术有限公司 | Novel digital display electronic liquid level gauge based on equidistant contact |
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2017
- 2017-11-27 CN CN201721606340.4U patent/CN207540624U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806918A (en) * | 2017-11-27 | 2018-03-16 | 浙江星天海洋科学技术有限公司 | Novel digital display electronic liquid level gauge based on equidistant contact |
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 314000 room 2f225, No. 705, Asia Pacific Road, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Xingtian marine science and Technology Co.,Ltd. Address before: 314000 first and second floors of R & D workshop building, No. 153, Huixin Road, Daqiao Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG STARTEST MARINE SCIENCE AND TECHNOLOGY Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 314000 Floor 2, Building 2, No. 153, Huixin Road, Daqiao Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Xingtian marine science and Technology Co.,Ltd. Address before: 314000 room 2f225, No. 705, Asia Pacific Road, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: Zhejiang Xingtian marine science and Technology Co.,Ltd. |