CN101793536A - Optical-fiber magnetic suspension photoelectric scanning type flow meter - Google Patents
Optical-fiber magnetic suspension photoelectric scanning type flow meter Download PDFInfo
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- CN101793536A CN101793536A CN200910311826A CN200910311826A CN101793536A CN 101793536 A CN101793536 A CN 101793536A CN 200910311826 A CN200910311826 A CN 200910311826A CN 200910311826 A CN200910311826 A CN 200910311826A CN 101793536 A CN101793536 A CN 101793536A
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Abstract
The invention relates to a flow meter, in particular to an optical-fiber magnetic suspension photoelectric scanning type flow meter. The optical-fiber magnetic suspension photoelectric scanning type flow meter at least comprises a shell, a conical pipe and a floater, wherein the conical pipe and the floater are arranged in the shell. The optical-fiber magnetic suspension photoelectric scanning type flow meter is characterized in that the shell comprises an inner shell and an outer shell, wherein a magnetic suspension photoelectric scanning circuit is arranged between seal cavities of the inner shell and the outer shell; the conical pipe is arranged in the inner shell and is internally provided with the magnetic floater; an outer arm of the inner shell is provided with a flow mark; the floater inside the conical pipe moves up and down; the magnetic suspension photoelectric scanning circuit arranged between the inner shell and the outer shell reads the flow mark positioned on the outer arm of the inner shell and converts the read flow mark into a flow signal for output through a processing unit; and a processor is electrically connected with a light-emitting diode, sends read and processed flow information to the input end of an optical fiber coupler through the light-emitting diode and then sends to a secondary meter through optical fibers. The invention can not only ensure the precision of flow, but also simplify the processing process of the flow meter.
Description
Technical field
The present invention relates to a kind of flow instrument, particularly optical-fiber magnetic suspension photoelectric scanning type flow meter.
Background technology
Existing float flowmeter is made up of vertical taper pipe and a float group that moves up and down along the Taper Pipe axle of a bottom-up expansion.When detected fluid is passed through the annular space of Taper Pipe and float formation from bottom to top, the float upper and lower side produces differential pressure and forms the power that float rises, when the suffered raising force of float when being immersed in the fluid float weight, float just rises, and the annular space area increases thereupon, and annular space place rate of flow of fluid descends immediately, float upper and lower side differential pressure reduces, the raising force that acts on float is also along with minimizing, and when raising force equaled to be immersed in the fluid float weight, float just was stabilized in a certain height.Float height and flow of passing through in Taper Pipe have corresponding relation.The flow number majority is an indicator formula structure in this instrument, adopt and digitally then read by magnetic reading head by the magnetic position in the float, show by processing of circuit, because magnetic position is limited by the magnetic reading head conversion accuracy, influenced the precision of float flowmeter, the highest design is in the precision of 1 grade of table.
Summary of the invention
The purpose of this invention is to provide the high optical-fiber magnetic suspension photoelectric scanning type flow meter of a kind of precision.
The object of the present invention is achieved like this, optical-fiber magnetic suspension photoelectric scanning type flow meter, which comprises at least, tapered tube and float in the housing, housing, it is characterized in that: housing comprises inner and outer shell, and the magnetic-suspension optoelectronic scanning circuit is arranged between the inner and outer shell annular seal space; Tapered tube is in inner housing, the magnetic float is arranged in the tapered tube, the inner housing outer arm has the flow mark, magnetic float in the tapered tube moves up and down, magnetic-suspension optoelectronic scanning circuit between the inner and outer shell reads the flow mark of inner housing outer arm, and the magnetic-suspension optoelectronic scanning circuit converts the flow mark that reads to flow signal by processing unit and exports; Processor is electrically connected with light emitting diode, and the flow information that processor will read and handle sends to the input end of fiber coupler by light emitting diode, is sent to secondary instrument by optical fiber again.
The flow mark of described inner housing outer arm is the linear marker.
The flow mark right and wrong linear marker of described inner housing outer arm.
The flow mark of described inner housing outer arm is a Gray code.
Advantage of the present invention is: because the inner housing outer arm has the flow mark, tapered tube is the magnetic float, it between the inner and outer shell magnetic-suspension optoelectronic scanning circuit, during fluctuations in discharge, the magnetic float moves up and down at tapered tube, read the flow mark of inner housing outer arm, the magnetic-suspension optoelectronic scanning circuit converts the flow mark that reads to flow signal by processing unit and exports.And the flow mark adopts Gray code, and the flow mark can be linear marker or non-linear mark.Read by the magnetic-suspension optoelectronic scanning circuit at last and carry out secondary treating, precision that can not only dependable flow, and simplified the processing technology of flowmeter.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing:
Fig. 1 is an embodiment of the invention structural representation;
Fig. 2 is the circuit theory diagrams that the magnetic-suspension optoelectronic scanning circuit has radio circuit;
Fig. 3 is the circuit theory diagrams of magnetic-suspension optoelectronic scanning circuit band fiber coupler.
Among the figure: 1, inner housing; 2, magnet ring; 3, shell body; 4, backstay; 5, fluid flow pass; 6, magnetic-suspension optoelectronic scanning circuit; 7, tapered tube; 8, inner and outer shell annular seal space; 9, magnetic float; 10, locating rack; 11, luminotron; 12, fiber coupler; 13, optical fiber; 14, radio-frequency transmissions circuit; 15, Gray code flow mark; 16, photoelectricity reads circuit; 17, battery; 18, processor; 19, bias light light emitting diode; 20, photoelectric receiving tube; 21, outer timing circuit; 22, secondary instrument; 23, radio-frequency (RF) receiving circuit.
Embodiment
As shown in Figure 1, optical-fiber magnetic suspension photoelectric scanning type flow meter, the housing of flowmeter comprise inner housing 1 and shell body 3, and magnetic-suspension optoelectronic scanning circuit 6 is arranged between the inner and outer shell annular seal space 8; Magnetic-suspension optoelectronic scanning circuit 6 is fixed in the annular casing, and annular casing upper end or lower end be magnet ring 2 fixedly, and inner housing 1 outer arm has Gray code flow mark 15, and Gray code flow mark 15 can be linear marker's flow, also can right and wrong linear marker flow.At inner housing internal fixation tapered tube 7, magnetic float 9 is arranged in the tapered tube 7, when flow passes through, magnetic float 9 in tapered tube 7 on or move down, form the gap between magnetic float 9 and the tapered tube 7, the size in gap is relevant with flow, and fluid flows out gap length and Gray's encoding stream amount mark 15 corresponding (linear or non-linear corresponding) by fluid flow pass 5.Read the Gray code flow mark 15 of inner housing 1 outer arm by the magnetic-suspension optoelectronic scanning circuit 6 between the inner and outer shell, magnetic-suspension optoelectronic scanning circuit 6 converts the flow mark that reads to flow signal by processing unit and exports.In order to make magnetic float 9 be in position balanced in the tapered tube 7 always, magnetic float 9 has backstay 4 up and down, and backstay 4 is positioned in the slideway of locating rack 10, and locating rack 10 can not influence fluid and flow.The magnet ring supporting with magnetic float 9 arranged at magnetic-suspension optoelectronic scanning circuit 6 bottom that suspends, when magnetic float 9 moves up and down, and the Gray code flow mark 15 of magnetic-suspension optoelectronic scanning circuit 6 scanning inner housings 1 outer arm.
Fig. 2 is magnetic-suspension optoelectronic scanning circuit 6 circuit theory diagrams that pass through optical fiber 13 to secondary table delivery rate information, magnetic-suspension optoelectronic scanning circuit 6 comprises that photoelectricity reads circuit 16, battery 17 and processor 18 (single-chip microcomputer EM78P458), single-chip microcomputer EM78P458I/O mouth is electrically connected with photoelectricity and reads circuit 16, photoelectricity reads circuit 16 and is made up of bias light light emitting diode 19 and photoelectric receiving tube 20, bias light light emitting diode 19 is worked luminous when reading Gray code flow mark 15, cavity between inner housing 1 and shell body 3 provides light intensity, photoelectric receiving tube 20 is corresponding one by one with Gray's encoding stream amount mark 15 each code channel, during bias light light emitting diode 19 luminous (work following time of 100US), single-chip microcomputer EM78P458 reads the intensity signal of each photoelectric receiving tube 20 by the I/O mouth of correspondence, the value of reading is 1 during for high level, and the value of reading is 0 (also can on the contrary) during for low level.At last the flow information that reads is sent to fiber coupler 12 on the shell body 3 by infraluminescence pipe 11, send to secondary instrument 22 by optical fiber 13 again.
Fig. 3 is magnetic-suspension optoelectronic scanning circuit 6 circuit theory diagrams that pass through the radio-frequency transmissions circuit to secondary table delivery rate information, magnetic-suspension optoelectronic scanning circuit 6 comprises that photoelectricity reads circuit 16, battery 17 and processor 18 (single-chip microcomputer EM78P458), single-chip microcomputer EM78P458I/O mouth is electrically connected with photoelectricity and reads circuit 16, photoelectricity reads circuit 16 and is made up of bias light light emitting diode 19 and photoelectric receiving tube 20, bias light light emitting diode 19 is worked luminous when reading Gray code flow mark 15, cavity between inner housing 1 and shell body 3 provides light intensity, photoelectric receiving tube 20 is corresponding one by one with Gray's encoding stream amount mark 15 each sign indicating number, during bias light light emitting diode 19 luminous (work following time of 100US), single-chip microcomputer EM78P458 reads the intensity signal of each photoelectric receiving tube 20 by the I/O mouth of correspondence, the value of reading is 1 during for high level, and the value of reading is 0 (also can on the contrary) during for low level.At last the flow information that reads is sent to radio-frequency (RF) receiving circuit 23 by radio-frequency transmissions circuit 14, be electrically connected with secondary instrument 22 by interface, show flow by secondary instrument 22 by radio-frequency (RF) receiving circuit 23.
Because single-chip microcomputer EM78P458 can not work under continuous duty, power consumption is big like this, and the electric current that is provided by battery 17 can run out of under the very short time, therefore, single-chip microcomputer EM78P458 carries out with periodic working method, and every 0.1S-1S works once, each working time 200US.Can keep long work like this, adopt 3.6V/2A as battery 17, but the flowmeter continuous working be more than 3 years.Guarantee that single-chip microcomputer EM78P458 timing working is provided the timing of 0.1S-1S by the outer timing circuit 21 that is electrically connected.
Claims (5)
1. optical-fiber magnetic suspension photoelectric scanning type flow meter, it comprises, tapered tube and float in the housing, housing, it is characterized in that: housing comprises inner and outer shell, and magnetic-suspension optoelectronic scanning circuit (6) is arranged between the inner and outer shell annular seal space (8); Tapered tube (7) is in inner housing (1), magnetic float (9) is arranged in the tapered tube (7), inner housing (1) outer arm has the flow mark, magnetic float (9) in the tapered tube (7) moves up and down, magnetic-suspension optoelectronic scanning circuit (6) between the inner and outer shell reads the flow mark of inner housing outer arm, and magnetic-suspension optoelectronic scanning circuit (6) converts the flow mark that reads to flow signal by processing unit and exports; Processor (18) is electrically connected with light emitting diode, and the flow information that processor (18) will read and handle sends to the input end of fiber coupler (12) by light emitting diode, is sent to secondary instrument (22) by optical fiber (13) again.
2. the described optical-fiber magnetic suspension photoelectric scanning type flow meter of root institute claim 1, it is characterized in that: the flow mark of described inner housing (1) outer arm is the linear marker.
3. the described optical-fiber magnetic suspension photoelectric scanning type flow meter of root institute claim 1 is characterized in that: the flow mark right and wrong linear marker of described inner housing (1) outer arm.
4. the described optical-fiber magnetic suspension photoelectric scanning type flow meter of root institute claim 1, it is characterized in that: the flow mark of described inner housing (1) outer arm is a Gray code.
5. wireless magnetic suspension photoelectric scanning flow instrument according to claim 1, it is characterized in that: described magnetic-suspension optoelectronic scanning circuit (6) comprises that photoelectricity reads circuit (16), battery (17) and processor (18), single-chip microcomputer EM78P458I/O mouth is electrically connected with photoelectricity and reads circuit (16), photoelectricity reads circuit (16) and is made up of bias light light emitting diode (19) and photoelectric receiving tube (20), bias light light emitting diode (19) is worked luminous when reading Gray code flow mark (15), cavity between inner housing (1) and shell body (3) provides light intensity, photoelectric receiving tube (20) is corresponding one by one with each code channel of Gray's encoding stream amount mark (15), when bias light light emitting diode (19) is luminous, single-chip microcomputer EM78P458 reads the intensity signal of each photoelectric receiving tube (20) by the I/O mouth of correspondence, the value of reading is 1 during for high level, and the value of reading is 0 during for low level; At last the flow information that reads is sent to fiber coupler (12) on the shell body (3) by the infraluminescence pipe, send to secondary instrument (22) by optical fiber (13) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910311826A CN101793536A (en) | 2009-12-20 | 2009-12-20 | Optical-fiber magnetic suspension photoelectric scanning type flow meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910311826A CN101793536A (en) | 2009-12-20 | 2009-12-20 | Optical-fiber magnetic suspension photoelectric scanning type flow meter |
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| CN101793536A true CN101793536A (en) | 2010-08-04 |
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| CN200910311826A Pending CN101793536A (en) | 2009-12-20 | 2009-12-20 | Optical-fiber magnetic suspension photoelectric scanning type flow meter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438943A (en) * | 2013-09-02 | 2013-12-11 | 山东大学 | Optical fiber conduction type rotor flow sensor |
| CN103604472A (en) * | 2013-11-25 | 2014-02-26 | 山东大学 | Digital gas flow sensor |
| CN110567539A (en) * | 2019-09-20 | 2019-12-13 | 长春工业大学 | grid dislocation type triboelectric float flowmeter |
| CN110567540A (en) * | 2019-09-20 | 2019-12-13 | 长春工业大学 | Triboelectric remote transmission float flowmeter |
| CN110567535A (en) * | 2019-09-20 | 2019-12-13 | 长春工业大学 | Turning plate type triboelectric rotor flow meter |
| CN114152295A (en) * | 2021-12-02 | 2022-03-08 | 浙江大学 | Integrated magnetic suspension flow controller |
-
2009
- 2009-12-20 CN CN200910311826A patent/CN101793536A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438943A (en) * | 2013-09-02 | 2013-12-11 | 山东大学 | Optical fiber conduction type rotor flow sensor |
| CN103438943B (en) * | 2013-09-02 | 2015-08-12 | 山东大学 | A kind of optical fiber conduction type rotor flow sensor |
| CN103604472A (en) * | 2013-11-25 | 2014-02-26 | 山东大学 | Digital gas flow sensor |
| CN103604472B (en) * | 2013-11-25 | 2015-12-30 | 山东大学 | A kind of digital gas flow sensor |
| CN110567539A (en) * | 2019-09-20 | 2019-12-13 | 长春工业大学 | grid dislocation type triboelectric float flowmeter |
| CN110567540A (en) * | 2019-09-20 | 2019-12-13 | 长春工业大学 | Triboelectric remote transmission float flowmeter |
| CN110567535A (en) * | 2019-09-20 | 2019-12-13 | 长春工业大学 | Turning plate type triboelectric rotor flow meter |
| CN110567540B (en) * | 2019-09-20 | 2020-10-23 | 长春工业大学 | Triboelectric remote transmission float flowmeter |
| CN114152295A (en) * | 2021-12-02 | 2022-03-08 | 浙江大学 | Integrated magnetic suspension flow controller |
| CN114152295B (en) * | 2021-12-02 | 2022-12-27 | 浙江大学 | Integrated magnetic suspension flow controller |
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Application publication date: 20100804 |