CN105157790A - Aided non-full-pipe detection device for electromagnetic flowmeter - Google Patents
Aided non-full-pipe detection device for electromagnetic flowmeter Download PDFInfo
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- CN105157790A CN105157790A CN201510695404.1A CN201510695404A CN105157790A CN 105157790 A CN105157790 A CN 105157790A CN 201510695404 A CN201510695404 A CN 201510695404A CN 105157790 A CN105157790 A CN 105157790A
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Abstract
The invention discloses an aided non-full-pipe detection device for an electromagnetic flowmeter. According to the aided non-full-pipe detection device, a first 1-MHz ultrasonic transducer and a second 1-MHz ultrasonic transducer are oppositely inlaid into a pipe body; the aided detection device comprises a signal detection circuit, wherein a single chip microcomputer IO1 is connected with a first pin of the first 1-MHz ultrasonic transducer, a first pin of the second 1-MHz ultrasonic transducer is connected with a resistor R3, the other end of the R3 is connected with the in-phase end of an operational amplifier U1, the reverse-phase end of the U1 is connected with a resistor R1 and a resistor R2, the other end of the R2 is connected with the output end of the operational amplifier U1 and a positive electrode of a diode D1, a negative electrode of the D1 is connected with a resistor R4, the other end of the resistor R4 is connected with a capacitor C1, a resistor R5 and the reverse-phase end of an operational amplifier U2, the in-phase end of the operational amplifier U2 is connected with a resistor R6 and a resistor R7, the other end of the resistor R7 is connected with a resistor R8 and a resistor R9, the other end of the resistor R9 is connected with a power supply VCC, and the other end of the resistor R6 is connected with the output end of the operational amplifier U2 and a single chip microcomputer IO2. The aided detection device is high in measuring stability and reliability.
Description
Technical field
The present invention relates to field of flow measurement, particularly relate to a kind of electromagnetic flowmeter auxiliary detection non-full pipe device.
Background technology
Most electromagnetic flowmeters only can measure the flow of conductive liquid of full pipe condition, and in non-full pipe state, electromagnetic flowmeter can not accurate measuring channel fluid flow.Although most of electromagnetic flowmeter is known as have non-full pipe measuring ability, but it realizes principle is realized by the conductance of detection liquid in pipe, because the conductance of the on-the-spot various liquid of operating mode is had nothing in common with each other, and by the critical conditions of full packages to non-full pipe pipe process, measure liquid in pipe conductance often close with full pipe condition, accurately can not judge the non-full pipe state in pipe.
Summary of the invention
The present invention, in order to accurately judge the non-full pipe state in electromagnetic flowmeter pipe, provides a kind of electromagnetic flowmeter auxiliary detection non-full pipe device, accurately can judge the fluid state in electromagnetic flowmeter pipe.
The technical scheme adopted for realizing object of the present invention is:
Comprise 1MHz ultrasonic transducer A, 1MHz ultrasonic transducer B and signal deteching circuit;
Described 1MHz ultrasonic transducer A and 1MHz ultrasonic transducer B opposing insert enter body, and are 10 ° of angles with body vertical direction;
Described signal deteching circuit is specially: 1 pin of single-chip microcomputer IO1 and 1MHz ultrasonic transducer A is connected, the 2 pin ground connection of 1MHz ultrasonic transducer A, the 2 pin ground connection of 1MHz ultrasonic transducer B, 1 pin and the resistance R3 of 1MHz ultrasonic transducer B are connected, the in-phase end of the resistance R3 other end and operational amplifier U1 is connected, the end of oppisite phase of operational amplifier U1 and resistance R1 and resistance R2 are connected, resistance R1 other end ground connection, the output terminal of the resistance R2 other end and operational amplifier U1 and the positive pole of diode D1 are connected, negative pole and the resistance R4 of diode D1 are connected, the resistance R4 other end and electric capacity C1, resistance R5, the end of oppisite phase of operational amplifier U2 is connected, electric capacity C1, the other end ground connection of resistance R5, the in-phase end of operational amplifier U2 and resistance R6 and resistance R7 are connected, the other end of resistance R7 and resistance R8 and resistance R9 are connected, resistance R8 other end ground connection, another termination power of resistance R9 VCC, output terminal and the single-chip microcomputer IO2 of the resistance R6 other end and operational amplifier U2 are connected.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention accurately can judge blank pipe, full pipe condition in electromagnetic flowmeter pipe, by the principle that the attenuation coefficient difference of ultrasound wave in liquid, gas is very large, accurately can judge electromagnetic flowmeter tube fluid state, Measurement sensibility, reliability are high, a kind of electromagnetic flowmeter auxiliary detection of the present invention blank pipe device, practical, accessible site enters electromagnetic flowmeter inside, also in the outside independent use of electromagnetic flowmeter, the industry spot using electromagnetic flowmeter survey can be widely used in.
Accompanying drawing explanation
Figure 1 shows that mechanical construction drawing of the present invention;
Figure 2 shows that signal deteching circuit figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Figure 1 shows that mechanical construction drawing of the present invention, body 1,1MHz ultrasonic transducer A2 and 1MHz ultrasonic transducer B3, wherein 1MHz ultrasonic transducer A and 1MHz ultrasonic transducer B opposing insert enter body, and are θ angle with body numerical value direction, are about 10 °.
Figure 2 shows that signal deteching circuit figure of the present invention, comprise: single-chip microcomputer IO1 and 1MHz ultrasonic transducer A(Y1) 1 pin be connected, 1MHz ultrasonic transducer A(Y2) 2 pin ground connection, the 2 pin ground connection of 1MHz ultrasonic transducer B, 1 pin and the resistance R3 of 1MHz ultrasonic transducer B are connected, the in-phase end of the R3 other end and operational amplifier U1 is connected, the end of oppisite phase of U1 and resistance R1 and resistance R2 are connected, resistance R1 other end ground connection, the output terminal of the R2 other end and operational amplifier U1 and the positive pole of diode D1 are connected, negative pole and the resistance R4 of D1 are connected, the resistance R4 other end and electric capacity C1, resistance R5, the end of oppisite phase of operational amplifier U2 is connected, electric capacity C1, the other end ground connection of resistance R5, the in-phase end of operational amplifier U2 and resistance R6 and resistance R7 are connected, the other end of resistance R7 and resistance R8 and resistance R9 are connected, resistance R8 other end ground connection, another termination power of resistance R9 VCC, output terminal and the single-chip microcomputer IO2 of the resistance R6 other end and operational amplifier U2 are connected.
Concrete detecting step is: the fixing 1MHz pulse signal that exports of single-chip microcomputer IO1 is to 1MHz ultrasonic transducer A, 1MHz ultrasonic transducer A sends 1MHz ultrasonic signal, if pipe interior is full pipe condition, 1MHz ultrasonic transducer B will receive ultrasonic signal, in the output terminal output low level of operational amplifier U2; If pipe interior is non-full pipe state, 1MHz ultrasonic transducer B cannot receive signal, export high level at the output terminal of operational amplifier U2, thus judge the level of the output terminal of operational amplifier U2, accurately can judge that pipeline is full packages or non-full pipe state.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. an electromagnetic flowmeter auxiliary detection non-full pipe device, is characterized in that: comprise 1MHz ultrasonic transducer A, 1MHz ultrasonic transducer B and signal deteching circuit;
Described 1MHz ultrasonic transducer A and 1MHz ultrasonic transducer B opposing insert enter body, and are 10 ° of angles with body vertical direction;
Described signal deteching circuit is specially: 1 pin of single-chip microcomputer IO1 and 1MHz ultrasonic transducer A is connected, the 2 pin ground connection of 1MHz ultrasonic transducer A, the 2 pin ground connection of 1MHz ultrasonic transducer B, 1 pin and the resistance R3 of 1MHz ultrasonic transducer B are connected, the in-phase end of the resistance R3 other end and operational amplifier U1 is connected, the end of oppisite phase of operational amplifier U1 and resistance R1 and resistance R2 are connected, resistance R1 other end ground connection, the output terminal of the resistance R2 other end and operational amplifier U1 and the positive pole of diode D1 are connected, negative pole and the resistance R4 of diode D1 are connected, the resistance R4 other end and electric capacity C1, resistance R5, the end of oppisite phase of operational amplifier U2 is connected, electric capacity C1, the other end ground connection of resistance R5, the in-phase end of operational amplifier U2 and resistance R6 and resistance R7 are connected, the other end of resistance R7 and resistance R8 and resistance R9 are connected, resistance R8 other end ground connection, another termination power of resistance R9 VCC, output terminal and the single-chip microcomputer IO2 of the resistance R6 other end and operational amplifier U2 are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695404.1A CN105157790A (en) | 2015-10-26 | 2015-10-26 | Aided non-full-pipe detection device for electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695404.1A CN105157790A (en) | 2015-10-26 | 2015-10-26 | Aided non-full-pipe detection device for electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105157790A true CN105157790A (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510695404.1A Pending CN105157790A (en) | 2015-10-26 | 2015-10-26 | Aided non-full-pipe detection device for electromagnetic flowmeter |
Country Status (1)
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| CN (1) | CN105157790A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069123A (en) * | 1991-07-29 | 1993-02-17 | 基·雷/森索尔有限公司 | Time gate ultrasonic sensor and method |
| KR20060112925A (en) * | 2005-04-28 | 2006-11-02 | (주)우진후로텍 | Ultrasonic and pressure complex level measuring type flow meter for partially filled pipeline |
| CN102879045A (en) * | 2012-09-25 | 2013-01-16 | 天津市求精科技发展有限公司 | Ultrasonic flowmeter for partly-filled pipe |
| CN103575346A (en) * | 2013-10-12 | 2014-02-12 | 苏州赛斯德工程设备有限公司 | Ultrasonic flowmeter |
| CA2911338A1 (en) * | 2013-06-21 | 2014-12-24 | Flow-Tronic S.A. | Method of converting a measurement of local speed of a fluid in a channel or a duct into a mean speed |
| CN104280081A (en) * | 2014-10-22 | 2015-01-14 | 中山欧麦克仪器设备有限公司 | Intelligent large-diameter electromagnetic flowmeter |
| CN205049208U (en) * | 2015-10-26 | 2016-02-24 | 天津商业大学 | Non - full packages device of supplementary detection of electric -magnetic flow meter |
-
2015
- 2015-10-26 CN CN201510695404.1A patent/CN105157790A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069123A (en) * | 1991-07-29 | 1993-02-17 | 基·雷/森索尔有限公司 | Time gate ultrasonic sensor and method |
| KR20060112925A (en) * | 2005-04-28 | 2006-11-02 | (주)우진후로텍 | Ultrasonic and pressure complex level measuring type flow meter for partially filled pipeline |
| CN102879045A (en) * | 2012-09-25 | 2013-01-16 | 天津市求精科技发展有限公司 | Ultrasonic flowmeter for partly-filled pipe |
| CA2911338A1 (en) * | 2013-06-21 | 2014-12-24 | Flow-Tronic S.A. | Method of converting a measurement of local speed of a fluid in a channel or a duct into a mean speed |
| CN103575346A (en) * | 2013-10-12 | 2014-02-12 | 苏州赛斯德工程设备有限公司 | Ultrasonic flowmeter |
| CN104280081A (en) * | 2014-10-22 | 2015-01-14 | 中山欧麦克仪器设备有限公司 | Intelligent large-diameter electromagnetic flowmeter |
| CN205049208U (en) * | 2015-10-26 | 2016-02-24 | 天津商业大学 | Non - full packages device of supplementary detection of electric -magnetic flow meter |
Non-Patent Citations (3)
| Title |
|---|
| 何希才，任力颖，杨静: "《实用传感器接口电路实例》", 31 May 2007 * |
| 章瑞平，李国锋: "超声波流量计在液体测量中的应用", 《廊坊师范学院学报》 * |
| 黄彤: "非满管电磁流量计在污水测量中的应用", 《工业仪表与自动化装置》 * |
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Application publication date: 20151216 |
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| RJ01 | Rejection of invention patent application after publication |