CN101514912A - Charge inductive type rotation sensor and flow meter thereof - Google Patents
Charge inductive type rotation sensor and flow meter thereof Download PDFInfo
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- CN101514912A CN101514912A CNA2008100104749A CN200810010474A CN101514912A CN 101514912 A CN101514912 A CN 101514912A CN A2008100104749 A CNA2008100104749 A CN A2008100104749A CN 200810010474 A CN200810010474 A CN 200810010474A CN 101514912 A CN101514912 A CN 101514912A
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- impeller
- rotation sensor
- magnet
- flow meter
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Abstract
The invention relates to rotation sensor technology, and provides a charge inductive rotation sensor with high sensitivity and accuracy and capable of non-power consumption sensing operation and a flow meter thereof. The upper side and the lower side of an impeller or a turntable inside a sensor shell are fixedly provided with a dielectric body and a magnet respectively; a radius position of the dielectric body rotating along with the impeller or the turntable is fixedly provided with an induction electrode; the induction electrode is electrically connected with a switching amplifier; and the output of the switching amplifier extends out of the shell and is provided with an induction signal output line. The flow meter with the charge inductive type rotation sensor has a magnet pole of a rotary body arranged in like polarity relative to the magnet pole of the impeller or the turntable. The power consumption of the sensor provided by the technical proposal is far lower than that of a Wiegand sensor; therefore, the sensor can sense and transmit a rotation signal without adopting an external working power supply; the flow meter drives the impeller or the turntable by means of the principle of mutual repulsion between identical polarities, thereby forming a working state of magnetic suspension; therefore, the sensitivity, the accuracy and the reliability of the sensor are increased obviously and the service life of the sensor is also greatly prolonged.
Description
Technical field
The present invention relates to rotation sensor and have the flowmeter or the tachometer gage of rotation sensor.
Background technology
For flow type measurement instrument, especially intelligent flow measurement instrument requires rotation sensor wherein not only meeting the sensing requirement aspect sensitivity and the accuracy, also requires it to have extremely low power consumption.Existing a lot of rotation sensor does not all well satisfy above-mentioned request for utilization, has only generally good " Wei root sensor " to be most widely used, and it is also called oneself is " Zero-power consumption sensor ".But its transducing signal output terminal need seal in the pull-up resistor of 100K Ω, and in 3V power vd D operating circuit, this resistor current of flowing through is more than the 20 μ A; Next is, its induced signal a little less than, need add amplifier and power supply thereof in addition and could become and send the output driving signal; In addition, the structure of Wei root sensor constitutes the magnetic induction requirement very high, will have a strong impact on normal operation of sensor if rotary body magnet is in a single day contaminated, accuracy and sensitivity meeting reduce greatly, and this also is that " Wei root sensor " fails in the major technique reason of many technical field widespread usage such as portable tachometer gage, anemometer, flowmeter, intellectual water meter, intelligent gas meter.
Summary of the invention
The goal of the invention of patented claim of the present invention is to be provided under the prerequisite of no power consumption sensing work and realizes high sensitivity and accuracy technical purpose charge inductive type rotation sensor and flowmeter thereof.The charge inductive type rotation sensor technical scheme that the present patent application provides, its major technique content is: a kind of charge inductive type rotation sensor, its housing is provided with the fixedly impeller or the rotating disk of turning axle, the upper and lower side of impeller or rotating disk is fixed with dielectric and magnet respectively, be fixed with the induction electrode of responding in dielectric at dielectric in a position of impeller or rotating disk radius of turn, induction electrode is electrically connected on switching amplifier, and switching amplifier exports the housing peripheral hardware to the induced signal output line.
Patented claim of the present invention also provides a kind of flowmeter technical scheme with above-mentioned charge inductive type rotation sensor, be provided with the rotary body that promotes rotation by fluid in this flowmeter, this rotary body is provided with and sensor impeller or the corresponding magnet of rotating disk, and the magnet poles same sex of its magnet poles and impeller or rotating disk is oppositely arranged.
Charge inductive type rotation sensor that patented claim of the present invention provides and flowmeter technical scheme thereof, respond in dielectric with electrode, electrode moment generation induction current impels switching amplifier conducting output outwards to transmit an electric impulse signal, this signal intensity is higher, is enough to promote level on-off circuit thereafter.Because its switching amplifier output terminal still can operate as normal when sealing in the pull-up resistor of 10-20 megaohm, be under the working power of 3V promptly at VDD, working current only is below the 0.3 μ A, be the rotation sensor of a kind of power consumption far below Wei root sensor, it need not to add working power, can respond to become and send output induction rotating signal; In addition, the flowmeter that the technical program provided has been abandoned the magnetic force drive method of inhaling mutually with opposite pole in the prior art, original method exist promising prevent to throw switch have to increase the contradiction that therefore magnet suction but strengthen the impeller rotational resistance.The technical program is to upbraid principle of work mutually as with the same sex, has formed " magnetic levitation " duty, so the sensitivity of sensor and all raisings greatly of accuracy, also has high reliability features, and also prolong greatly serviceable life.
Description of drawings
Fig. 1 is the structural representation of charge inductive type rotation sensor of the present invention
Fig. 2 has the flowmeter fundamental diagram of charge inductive type rotation sensor for the present invention.
Embodiment
The charge inductive type rotation sensor one specific embodiment structure of patented claim of the present invention constitutes as shown in Figure 1, by top chock and step bearings one rotating shaft 8 is set in the housing 1 of this charge inductive type rotation sensor, impeller or wheel disc 7 are rotating shaft with this axle; Be set with magnet 6 and dielectric 5 respectively in the two sides up and down of impeller or wheel disc 7, as shown in Figure 2, promote impeller or rotating disk 7 by the magnet on the rotary body 11 of induced flow momentum 10, impeller or rotating disk 7 rotate; Respective side one stationkeeping that is positioned at dielectric 5 place radiuss of turn is provided with induction electrode 4, is fixed on the respective side that circuit board 3 is positioned at dielectric 5 place radiuss of turn at present embodiment induction electrode 4; Induction electrode 4 is electrically connected on switching amplifier 2 grids, and it is external that the output line 9 of switching amplifier 2 is connected in sensor shell.Detected liquid driven rotary body 11 and impeller or rotating disk 7 rotations, induction electrode 4 is responded in the dielectric 5 of impeller or rotating disk rotating signal each time, the immediate current that induction electrode 4 is produced impels switching amplifier 2 conductings, and it becomes feed signals by its output line 9 outputs.Flowmeter as shown in Figure 2 with above-mentioned charge inductive type rotation sensor, be provided with the rotary body 11 that promotes rotation by fluid in its flowmeter, this rotary body 11 is provided with the magnet 10 corresponding with sensor impeller or rotating disk, the magnet 6 magnetic pole same sexes of its magnet 10 magnetic poles and impeller or rotating disk are oppositely arranged, thereby make impeller or rotating disk 7 form " magnetic levitation " rotary work state.
Claims (2)
1. charge inductive type rotation sensor, be provided with the fixedly impeller or the rotating disk (7) of turning axle in its housing (1), the upper and lower side that it is characterized in that impeller or rotating disk is fixed with dielectric (5) and magnet (6) respectively, be fixed with the induction electrode of responding in dielectric (4) in a position of impeller or rotating disk radius of turn at dielectric, induction electrode is electrically connected on switching amplifier (2), and switching amplifier exports the housing peripheral hardware to the induced signal output line.
2, the flowmeter that has the described charge inductive type rotation sensor of claim 1, it is characterized in that being provided with in the flowmeter rotary body (11) that promotes rotation by fluid, this rotary body is provided with the magnet (10) corresponding with sensor impeller or rotating disk, and magnet (6) the magnetic pole same sex of its magnet (10) magnetic pole and impeller or rotating disk is oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100104749A CN101514912A (en) | 2008-02-23 | 2008-02-23 | Charge inductive type rotation sensor and flow meter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100104749A CN101514912A (en) | 2008-02-23 | 2008-02-23 | Charge inductive type rotation sensor and flow meter thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101514912A true CN101514912A (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100104749A Pending CN101514912A (en) | 2008-02-23 | 2008-02-23 | Charge inductive type rotation sensor and flow meter thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101514912A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015089899A1 (en) * | 2013-12-17 | 2015-06-25 | 奚勇 | Rotation-type flowmeter |
-
2008
- 2008-02-23 CN CNA2008100104749A patent/CN101514912A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015089899A1 (en) * | 2013-12-17 | 2015-06-25 | 奚勇 | Rotation-type flowmeter |
| US9970793B2 (en) | 2013-12-17 | 2018-05-15 | Shanghai Universoon Autoparts Co., Ltd. | Self-rotating flowmeter having a rotating mechanism including a hollow shaft and a disk having internal flow passages |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090826 |