CN107340036A - A kind of New Liquid Level Transducer device and preparation method thereof - Google Patents
A kind of New Liquid Level Transducer device and preparation method thereof Download PDFInfo
- Publication number
- CN107340036A CN107340036A CN201610279105.4A CN201610279105A CN107340036A CN 107340036 A CN107340036 A CN 107340036A CN 201610279105 A CN201610279105 A CN 201610279105A CN 107340036 A CN107340036 A CN 107340036A
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- straight
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- liquid level
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- 239000007788 liquid Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 239000011796 hollow space material Substances 0.000 claims description 12
- 239000011800 void material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- G01F23/64—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 of the free float type without mechanical transmission elements
- G01F23/72—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 of the free float type without mechanical transmission elements using magnetically actuated indicating means
Abstract
The invention discloses a kind of preparation method of New Liquid Level Transducer device, this method uses the straight-bar structure of inner hollow as matrix, when straight-bar is inserted in liquid, its liquid can flow into the hollow part of straight-bar, in the hollow interior setting movable magnetic float of straight-bar, the magnetic float fluctuates with the height of liquid level, at least two magnetosensitive chip is embedded in straight-bar both sides, magnetic float contacts when fluctuating with the magnetosensitive chip of diverse location, corresponding magnetosensitive magnetosensitive chip exports high level signal, follow-up process circuit calculates the height of liquid level according to the signal for receiving diverse location magnetosensitive chip, the present invention is simple in construction, it is easy to make, it is practical.
Description
Technical field
The present invention relates to liquid measure technical field, especially a kind of New Liquid Level Transducer device and preparation method thereof.
Background technology
The depth of accurate measurement liquid is needed in many occasions, for different medium, liquid under varying environment, the liquid level sensor of use is also different, liquid level sensor in the market mainly has differential pressure type, magnetostriction type, condenser type, this four major class of magnetic float-type, these products have respective advantage and disadvantage (1), the height of liquid is mainly calculated in liquid level transducer of differential pressure type using pressure difference caused by the liquid of different height, the liquid height scope that this fluid level transmitter can measure is narrower, and need to do subsequent conditioning circuit the adjustment of different parameters for the liquid of different densities, universality is poor；（2）, Liquid Level Sensor Based on Magnetostriction mainly designed using magnetostriction principle, this kind of liquid level gauge is mainly to be designed by magnetostriction principle.During working sensor, its circuit part sends a pulse current, and electric current conducts along waveguide filament, and heavy current produces magnetic field around waveguide filament.There is a ball float outside the side lever of liquid level gauge, ball float can slide up and down along pole.There are some permanent magnets inside ball float.When magnetic field caused by the magnetic field as caused by waveguide filament and permanent magnet is met, magnetic waveguide filament is caused to produce torsion in the presence of field force, at this moment waveguide filament, which produces, reverses wave impulse.Only it is to be understood that the time difference of the pulse current of transmitting and the torsion wave impulse received, so that it may measure actual liquid level, but this metering system needs complicated subsequent conditioning circuit to provide support, it is expensive that this results in this fluid level transmitter, typically more than 3000 yuan；（3）, capacitance level transducer be the height that liquid is measured according to the difference of capacitance, different liquids highly cause the dielectric constant of medium in capacitor to change, so as to change capacitance, subsequent conditioning circuit calculates the height of liquid by measuring the difference of capacitance, the circuit that this metering system is also required to complexity calculates to coordinate, and with the change of temperature, great changes have taken place due to the electric capacity in circuit, it is narrower that this allows for the temperature range that this mode can measure, typically between -40 DEG C to+70 DEG C, and price is typically more than 1000 yuan；（4）, magnetic float-type liquid level sensor cardinal principle be that tongue tube is in the conduction state in the presence of saturation magnetic field, magnetic float moves up and down with the height of liquid level, the tongue tube of diverse location turns on the close of magnetic float, the height of liquid level is calculated after being handled via subsequent conditioning circuit, the precision of this metering system is not high, and tongue tube is glass structure, being easily damaged causes liquid level gauge to be out of order and shows inaccurate, the liquid level gauge volume of other dry reed-pipe structure is larger, required space is larger during installation, and price is typically more than 500 yuan.
The content of the invention
The technical problems to be solved by the invention are：There is provided a kind of structure letter to answer, practical New Liquid Level Transducer device and preparation method thereof, with overcome the deficiencies in the prior art.
What the present invention was realized in：
A kind of preparation method of New Liquid Level Transducer device, this method uses the straight-bar structure of inner hollow as matrix, when straight-bar is inserted in liquid, its liquid can flow into the hollow part of straight-bar, in the hollow interior setting movable magnetic float of straight-bar, the magnetic float fluctuates with the height of liquid level, at least two magnetosensitive chip is embedded in straight-bar both sides, magnetic float contacts when fluctuating with the magnetosensitive chip of diverse location, corresponding magnetosensitive magnetosensitive chip exports high level signal, follow-up process circuit calculates the height of liquid level according to the signal for receiving diverse location magnetosensitive chip.
In a kind of preparation method of foregoing New Liquid Level Transducer device, the internal void of the straight-bar is divided into rectangular parallelepiped structure.
In a kind of preparation method of foregoing New Liquid Level Transducer device, the magnetosensitive chip is symmetrically embedded in straight-bar both sides, and the magnetosensitive chip of straight-bar both sides is realized using laying method is intersected, i.e., the adjacent magnetosensitive chip chamber spacing of straight-bar side is the thickness that straight-bar opposite side corresponds to magnetosensitive chip.
In a kind of preparation method of foregoing New Liquid Level Transducer device, the consistency of thickness of each magnetosensitive chip, and the consistency of thickness of the thickness of the magnetic float and magnetosensitive chip.
In a kind of preparation method of foregoing New Liquid Level Transducer device, the magnetosensitive chip uses CC7001 magnetic foot switch chips, and the chip is full level type magnetosensitive chip, and the chip exports low level and high level under the conditions of zero magnetic field and saturation magnetic field respectively.
A kind of New Liquid Level Transducer device, including straight-bar, hollow space is set in straight-bar, magnetic float is placed in hollow space and can be extended down to hollow space and fluctuates, at least two magnetic chip is embedded in straight-bar in a manner of stacking, and the magnetic chip is engaged with magnetic float.
In a kind of foregoing New Liquid Level Transducer device, the hollow space of the straight-bar is rectangular parallelepiped structure, and the structure effectively can prevent magnetic float from rotating in the horizontal direction and cause measurement inaccurate.
In a kind of foregoing New Liquid Level Transducer device, the magnetosensitive chip is symmetrically embedded in straight-bar both sides, and the magnetosensitive chip of straight-bar both sides is realized using laying method is intersected, i.e. the adjacent magnetosensitive chip chamber spacing of straight-bar side is the thickness that straight-bar opposite side corresponds to magnetosensitive chip, in the both sides of bar magnetoresistive chip is fixed by the way of placement is intersected, improve measurement accuracy, according to the same side, magnetosensitive chip is set, when magnetic float shifts, errors are larger, during using alternating, error can be effectively reduced.
In a kind of foregoing New Liquid Level Transducer device, the consistency of thickness of each magnetosensitive chip, and the consistency of thickness of the thickness of the magnetic float and magnetosensitive chip, using each magnetic chip and magnetic float consistency of thickness, so that magnetic float can contact during moving up and down with corresponding magnetic chip so that magnetic chip energy magnetic sends high ordinary mail number.
With the above mentioned technical proposal, compared with prior art, the present invention passes through in the embedded magnetic chip of straight-bar alternating, and each chip thickness is consistent, after in straight-bar insertion liquid, magnetic float can fluctuate with liquid, due to magnetic float thickness and magnetic chip consistency of thickness, so that magnetic float persistently keeps contacting with corresponding magnetic chip so that magnetic chip can continuously send out high ordinary mail number（The magnetic chip differs in size with magnetic float contact area, and the high flat signal magnitude of output is also inconsistent so that obtains accurate liquid level size）, the present invention is simple in construction, easy to make, practical.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Accompanying drawing 2 is reluctance switch chip concept schematic diagram in the present invention；
Accompanying drawing 3 is the electric current output schematic diagram under reluctance switch chip corresponding pressure in the present invention.
Embodiment
Embodiments of the invention：A kind of preparation method of New Liquid Level Transducer device, this method uses the straight-bar structure of inner hollow as matrix, when straight-bar is inserted in liquid, its liquid can flow into the hollow part of straight-bar, in the hollow interior setting movable magnetic float of straight-bar, the magnetic float fluctuates with the height of liquid level, at least two magnetosensitive chip is embedded in straight-bar both sides, magnetic float contacts when fluctuating with the magnetosensitive chip of diverse location, corresponding magnetosensitive magnetosensitive chip exports high level signal, follow-up process circuit calculates the height of liquid level according to the signal for receiving diverse location magnetosensitive chip.
The internal void of the wherein straight-bar is divided into rectangular parallelepiped structure, the magnetosensitive chip is symmetrically embedded in straight-bar both sides, and the magnetosensitive chip of straight-bar both sides is realized using laying method is intersected, i.e. the adjacent magnetosensitive chip chamber spacing of straight-bar side is the thickness that straight-bar opposite side corresponds to magnetosensitive chip, the consistency of thickness of each magnetosensitive chip, and the consistency of thickness of the thickness of the magnetic float and magnetosensitive chip, and magnetosensitive chip uses CC7001 magnetic foot switch chips, the chip is full level type magnetosensitive chip, and the chip exports low level and high level under the conditions of zero magnetic field and saturation magnetic field respectively.
A kind of New Liquid Level Transducer device formed according to the above method, as shown in drawings, including straight-bar 1, hollow space 2 is set in straight-bar 1, magnetic float 3 is placed in hollow space 2 and can be extended down to hollow space 2 and fluctuates, at least two magnetic chip 4 is embedded in a manner of stacking in straight-bar 1, and the magnetic chip 4 is engaged with magnetic float 3.
Wherein the hollow space 2 of the straight-bar 1 is rectangular parallelepiped structure, the magnetosensitive chip 4 is symmetrically embedded in the both sides of straight-bar 1, and the magnetosensitive chip 4 of the both sides of straight-bar 1 is realized using laying method is intersected, i.e., 4 spacing of adjacent magnetosensitive chip of the side of straight-bar 1 are the thickness that the opposite side of straight-bar 1 corresponds to magnetosensitive chip 4
9th, a kind of New Liquid Level Transducer device according to claim 1, it is characterised in that：The consistency of thickness of each magnetosensitive chip 4, and the consistency of thickness of the thickness of the magnetic float 3 and magnetosensitive chip 4.
Relate generally to principle
The magneto-dependent sensor that the present embodiment uses is the CC7001 reluctance switch chips produced by Guizhou Yaguang Electronic Technology Co., Ltd., and the chip can be respectively in zero magnetic field and saturation magnetic field（More than 15 Gausses）Under conditions of export low level（0）And high level（1）（Accompanying drawing 2）, the static working current of chip is 3 microamperes（Under 3V input conditions）（Fig. 3）, there are a string of magnetosensitive chips straight-bar both sides, and the signal of the chip output of diverse location corresponds to different liquid levels.Magnetic float can trigger the magnetic induction switch output high level signal of diverse location when being fluctuated with the height of liquid level（And the high level signal size of same magnetic chip is linear with the contact area of the magnetic chip and magnetic float）, follow-up process circuit is understood calculate the height of liquid level according to the signal of the diverse location chip received（Accompanying drawing 1）The measurement accuracy of this fluid level transmitter is unrelated with measurement liquid depth, it is only relevant with the size of chip, existing chip is SOT-23 encapsulation, chip size is 3mm*2.5mm*1mm, because this chip is full polar form magnetosensitive chip, then minimum precision can be risen into 1.5mm by the way of placement is intersected on straight-bar both sides, if using smaller packaged type, minimum precision of the invention can also reduce.Because sensor is prepared by magnetosensitive chip, so magnetosensitive chip can be placed in the space of sealing, prevent that measure liquid has an impact to chip, this has been considerably improved the life-span of this fluid level transmitter.And because the temperature stability of the chip of the invention used is good, operating temperature range can be at -40 DEG C~+120 DEG C, and this just considerably increases the application of this liquid level gauge.According to measuring and calculating, the liquid level sensor price prepared using new magnetic resistance switch chip is about 300 or so.
The description of such scheme is the invention for being understood that and using for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to embodiment.Therefore, the invention is not restricted to above-mentioned real scheme, those skilled in the art's the method according to the invention, does not depart from improvement that scope made and modification all should be within protection scope of the present invention.
Claims (9)
- A kind of 1. preparation method of New Liquid Level Transducer device, it is characterised in that：This method uses the straight-bar structure of inner hollow as matrix, when straight-bar is inserted in liquid, its liquid can flow into the hollow part of straight-bar, in the hollow interior setting movable magnetic float of straight-bar, the magnetic float fluctuates with the height of liquid level, at least two magnetosensitive chip is embedded in straight-bar both sides, magnetic float contacts when fluctuating with the magnetosensitive chip of diverse location, corresponding magnetosensitive magnetosensitive chip exports high level signal, and follow-up process circuit calculates the height of liquid level according to the signal for receiving diverse location magnetosensitive chip.
- A kind of 2. preparation method of New Liquid Level Transducer device according to claim 1, it is characterised in that：The internal void of the straight-bar is divided into rectangular parallelepiped structure.
- A kind of 3. preparation method of New Liquid Level Transducer device according to claim 1, it is characterised in that：The magnetosensitive chip is symmetrically embedded in straight-bar both sides, and the magnetosensitive chip of straight-bar both sides is realized using laying method is intersected, i.e., the adjacent magnetosensitive chip chamber spacing of straight-bar side is the thickness that straight-bar opposite side corresponds to magnetosensitive chip.
- A kind of 4. preparation method of New Liquid Level Transducer device according to claim 1, it is characterised in that：The consistency of thickness of each magnetosensitive chip, and the consistency of thickness of the thickness of the magnetic float and magnetosensitive chip.
- A kind of 5. preparation method of New Liquid Level Transducer device according to claim 1, it is characterised in that：The magnetosensitive chip uses CC7001 magnetic foot switch chips, and the chip is full level type magnetosensitive chip, and the chip exports low level and high level under the conditions of zero magnetic field and saturation magnetic field respectively.
- 6. a kind of New Liquid Level Transducer device, including straight-bar（1）, it is characterised in that：In straight-bar（1）Interior setting hollow space（2）, magnetic float（3）It is placed on hollow space（2）It is interior and can be extended down to hollow space（2）Fluctuate, at least two magnetic chip（4）Straight-bar is embedded in a manner of stacking（1）It is interior, the magnetic chip（4）With magnetic float（3）It is engaged.
- A kind of 7. New Liquid Level Transducer device according to claim 6, it is characterised in that：The straight-bar（1）Hollow space（2）For rectangular parallelepiped structure.
- A kind of 8. New Liquid Level Transducer device according to claim 6, it is characterised in that：The magnetosensitive chip（4）Symmetrically it is embedded in straight-bar（1）Both sides, and straight-bar（1）The magnetosensitive chip of both sides（4）Realized using laying method is intersected, i.e. straight-bar（1）The adjacent magnetosensitive chip of side（4）Between spacing be straight-bar（1）Opposite side corresponds to magnetosensitive chip（4）Thickness.
- A kind of 9. New Liquid Level Transducer device according to claim 6, it is characterised in that：Each magnetosensitive chip（4）Consistency of thickness, and the magnetic float（3）Thickness and magnetosensitive chip（4）Consistency of thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610279105.4A CN107340036A (en) | 2016-05-03 | 2016-05-03 | A kind of New Liquid Level Transducer device and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610279105.4A CN107340036A (en) | 2016-05-03 | 2016-05-03 | A kind of New Liquid Level Transducer device and preparation method thereof |
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| CN107340036A true CN107340036A (en) | 2017-11-10 |
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| CN201610279105.4A Pending CN107340036A (en) | 2016-05-03 | 2016-05-03 | A kind of New Liquid Level Transducer device and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303279Y (en) * | 1997-07-24 | 1999-01-06 | 汪文良 | Magnetic suspension and tracking type meter for measuring liquid level |
| DE102007037933A1 (en) * | 2007-08-11 | 2009-02-19 | Hella Kgaa Hueck & Co. | Liquid sensor, in particular for measuring the oil level in a motor vehicle |
| CN101527206A (en) * | 2009-03-30 | 2009-09-09 | 浙江大学 | Hydraulic operating mechanism of high voltage circuit breaker |
| CN201697698U (en) * | 2010-05-27 | 2011-01-05 | 南京艾驰电子科技有限公司 | Zero-power liquid level alarm |
| CN102121844A (en) * | 2010-01-07 | 2011-07-13 | 李臻 | Non-contact liquid level meter based on giant magneto-resistance sensors |
| CN202403772U (en) * | 2011-12-14 | 2012-08-29 | 丹东通博电器(集团)有限公司 | Probe tube mechanism for magnetostriction liquid indicator |
| CN204188237U (en) * | 2014-09-29 | 2015-03-04 | 江苏凯龙宝顿动力科技有限公司 | Hall liquid level pick-up unit |
| CN204269198U (en) * | 2014-12-09 | 2015-04-15 | 上海雄风自控工程有限公司 | A kind of float of adjustable density |
-
2016
- 2016-05-03 CN CN201610279105.4A patent/CN107340036A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303279Y (en) * | 1997-07-24 | 1999-01-06 | 汪文良 | Magnetic suspension and tracking type meter for measuring liquid level |
| DE102007037933A1 (en) * | 2007-08-11 | 2009-02-19 | Hella Kgaa Hueck & Co. | Liquid sensor, in particular for measuring the oil level in a motor vehicle |
| CN101527206A (en) * | 2009-03-30 | 2009-09-09 | 浙江大学 | Hydraulic operating mechanism of high voltage circuit breaker |
| CN102121844A (en) * | 2010-01-07 | 2011-07-13 | 李臻 | Non-contact liquid level meter based on giant magneto-resistance sensors |
| CN201697698U (en) * | 2010-05-27 | 2011-01-05 | 南京艾驰电子科技有限公司 | Zero-power liquid level alarm |
| CN202403772U (en) * | 2011-12-14 | 2012-08-29 | 丹东通博电器(集团)有限公司 | Probe tube mechanism for magnetostriction liquid indicator |
| CN204188237U (en) * | 2014-09-29 | 2015-03-04 | 江苏凯龙宝顿动力科技有限公司 | Hall liquid level pick-up unit |
| CN204269198U (en) * | 2014-12-09 | 2015-04-15 | 上海雄风自控工程有限公司 | A kind of float of adjustable density |
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Application publication date: 20171110 |