CN104266699A - Photoelectric transmission electromagnetic flow meter - Google Patents
Photoelectric transmission electromagnetic flow meter Download PDFInfo
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- CN104266699A CN104266699A CN201410562382.7A CN201410562382A CN104266699A CN 104266699 A CN104266699 A CN 104266699A CN 201410562382 A CN201410562382 A CN 201410562382A CN 104266699 A CN104266699 A CN 104266699A
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- converter
- electromagnetic flowmeter
- transmission according
- photoelectricity transmission
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Abstract
The invention discloses a photoelectric transmission electromagnetic flow meter which comprises a converter, an exciting coil and an electrode. The exciting coil is connected with an exciting drive circuit, the electrode is connected to the converter through a photoelectric data transmission device, the photoelectric data transmission device can utilize an optical fiber transmission mode or an infrared transmission mode and the like. Due to the fact that electromagnetic influence on optical signals is small, the accuracy of data transmission can be ensured, interference is reduced, and the detection accuracy of the electromagnetic flow meter is improved.
Description
Technical field
The present invention relates to a kind of electromagnetic flowmeter of photoelectricity transmission.
Background technology
Electromagnetic flowmeter passes through electromagnetic inductor, the volume signals of the conducting liquid flow through in pipeline is converted to electric signal, its transfer principle is according to Faraday's electromagnetic induction law, when conducting liquid is by magnetic field intercepts electromagnetic wire, to electromotive force be produced, be recorded the flow of conducting liquid by electromotive force.Electromagnetic Flow is in respect of many advantages, but the electromagnetism that the magnetizing coil of electromagnetic flowmeter produces can produce interference to signal wire, causes precision to reduce.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of electromagnetic flowmeter of photoelectricity transmission.
The technical solution adopted for the present invention to solve the technical problems is:
An electromagnetic flowmeter for photoelectricity transmission, comprises converter, magnetizing coil, electrode, and described magnetizing coil is connected with excitatory driving circuit, and described electrode is connected to converter by a photooptical data transmitting device.
Described photooptical data transmitting device comprises the infrared launcher being arranged on electrode place and the infrared receiving device arranged on the switch.
Described infrared launcher is configured with signal amplifier.
Described converter includes signal processing circuit, microprocessor, A/D converter.
Described signal processing circuit comprises filtering circuit, feedback circuit, and signal exports after circuit, feedback circuit successively after filtering.
Described microprocessor is the MSP430 single-chip microcomputer of Hong Kong TI company or Dutch PHILIPS company 80C552 single-chip microcomputer.
Described A/D converter is the ICL7135 monolithic dual integ ration ADC of American I NTERSIL company.
The invention has the beneficial effects as follows: a kind of electromagnetic flowmeter of photoelectricity transmission, comprise converter, magnetizing coil, electrode, described magnetizing coil is connected with excitatory driving circuit, described electrode is crossed a photooptical data transmitting device and is connected to converter, this photooptical data transmitting device can adopt optical fiber, the transmission mode such as infrared, because the impact of electromagnetism on light signal is less, therefore can ensure the accuracy that data are transmitted, reduce interference, improve the precision that electromagnetic flowmeter detects.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention.
Embodiment
With reference to Fig. 1, Fig. 1 is the structural representation of the present invention's specific embodiment, as shown in the figure, a kind of electromagnetic flowmeter of photoelectricity transmission, comprise converter 1, magnetizing coil 2, electrode 3, described magnetizing coil 2 is connected with excitatory driving circuit, and described electrode 3 is connected to converter 1 by a photooptical data transmitting device, and this photooptical data transmitting device can adopt optical fiber, the transmission mode such as infrared.
In the present embodiment, as preferably, described photooptical data transmitting device adopts Infrared Transmission, it comprises the infrared launcher 51 being arranged on electrode 3 place and the infrared receiving device 52 be arranged on converter 1, because the impact of electromagnetism on light signal is less, therefore the accuracy that data are transmitted can be ensured, reduce interference, improve the precision that electromagnetic flowmeter detects.
Further, be configured with signal amplifier at infrared launcher 51, launch again after signal is amplified, reduce the damage of signal, improve the efficiency of transmission.
As preferably, described converter 1 includes signal processing circuit, microprocessor, A/D converter, described signal processing circuit comprises filtering circuit, feedback circuit, signal exports after circuit, feedback circuit successively after filtering, reduce the impact of interference noise, obtain the first-harmonic of flow velocity signal, and make the power of multiple interference noise reduce with bandwidth and reduce, improve signal to noise ratio (S/N ratio), improve the measuring accuracy of electromagnetic flowmeter.
As preferably, described microprocessor is the MSP430 single-chip microcomputer of Hong Kong TI company or Dutch PHILIPS company 80C552 single-chip microcomputer.
As preferably, described A/D converter is the ICL7135 monolithic dual integ ration ADC of American I NTERSIL company.
Above better enforcement of the present invention is illustrated; certainly; the present invention can also adopt form different from the embodiment described above; the equivalent conversion that those of ordinary skill in the art do under the prerequisite without prejudice to spirit of the present invention or change accordingly, all should belong in protection scope of the present invention.
Claims (7)
1. the electromagnetic flowmeter of a photoelectricity transmission, it is characterized in that: comprise converter (1), magnetizing coil (2), electrode (3), described magnetizing coil (2) is connected with excitatory driving circuit, and described electrode (3) is connected to converter (1) by a photooptical data transmitting device.
2. the electromagnetic flowmeter of a kind of photoelectricity transmission according to claim 1, is characterized in that: described photooptical data transmitting device comprises the infrared launcher (51) being arranged on electrode (3) place and the infrared receiving device (52) be arranged on converter (1).
3. the electromagnetic flowmeter of a kind of photoelectricity transmission according to claim 2, is characterized in that: described infrared launcher (51) is configured with signal amplifier.
4. the electromagnetic flowmeter of a kind of photoelectricity transmission according to claim 2, is characterized in that: described converter (1) includes signal processing circuit, microprocessor, A/D converter.
5. the electromagnetic flowmeter of a kind of photoelectricity transmission according to claim 4, is characterized in that: described signal processing circuit comprises filtering circuit, feedback circuit, and signal exports after circuit, feedback circuit successively after filtering.
6. the electromagnetic flowmeter of a kind of photoelectricity transmission according to claim 5, is characterized in that: described microprocessor is the MSP430 single-chip microcomputer of Hong Kong TI company or Dutch PHILIPS company 80C552 single-chip microcomputer.
7. the electromagnetic flowmeter of a kind of photoelectricity transmission according to claim 5, is characterized in that: described A/D converter is the ICL7135 monolithic dual integ ration ADC of American I NTERSIL company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562382.7A CN104266699A (en) | 2014-10-22 | 2014-10-22 | Photoelectric transmission electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562382.7A CN104266699A (en) | 2014-10-22 | 2014-10-22 | Photoelectric transmission electromagnetic flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104266699A true CN104266699A (en) | 2015-01-07 |
Family
ID=52158240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410562382.7A Pending CN104266699A (en) | 2014-10-22 | 2014-10-22 | Photoelectric transmission electromagnetic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104266699A (en) |
-
2014
- 2014-10-22 CN CN201410562382.7A patent/CN104266699A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 蔡武昌: "《电磁流量计》", 31 March 2004 * |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |