CN105424108A - Magnetic field anomaly detection device of electromagnetic flowmeter sensor - Google Patents
Magnetic field anomaly detection device of electromagnetic flowmeter sensor Download PDFInfo
- Publication number
- CN105424108A CN105424108A CN201610000679.3A CN201610000679A CN105424108A CN 105424108 A CN105424108 A CN 105424108A CN 201610000679 A CN201610000679 A CN 201610000679A CN 105424108 A CN105424108 A CN 105424108A
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- Prior art keywords
- magnetic field
- module
- flow meter
- alarm
- interference
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/007—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus comprising means to prevent fraud
Abstract
The invention discloses a magnetic field anomaly detection device of an electromagnetic flowmeter sensor, and relates to the technical field of devices which measure flow or mass of a fluid or a fluid solid material continuously passing through an instrument. The device comprises a magnetic field detection module, an interference identification module, an alarm output module, and an alarm recording module. The magnetic field detection module is embedded in an electromagnetic flowmeter sensor. The signal output end of the magnetic field detection module is connected with the signal input end of the interference identification module. The alarm output module is connected with the signal output end of the interference identification module. The recording signal output end of the alarm output module is connected with the signal input end of the alarm recording module. The device can detect whether electromagnetic interference has been occurred to the sensor. When electromagnetic interference occurs, the device gives out an alarm signal and records an electromagnetic interference event, so related working personnel can find interference on the flowmeter by illegal personnel in time.
Description
Technical field
The present invention relates to the device technique field measured and continue through the fluid of instrument or the flow of flowing solid material or quality, particularly relate to a kind of magnetic field abnormal detector of electromagnet flow meter sensor.
Background technology
Electromagnetic flowmeter is the instrument utilizing the principle of Faraday's electromagnetic induction law (as shown in Figure 1) to measure conducting liquid volumetric flow rate.Be illustrated in figure 2 the inner structure of electromagnet flow meter sensor, comprise lining 1, field coil 2, electrode 3 etc.The effect of field coil 2 is used to produce constant alternation square wave field, and when tested conducting liquid 4 flows in pipeline 5, the magnetic induction line that meeting perpendicular cuts is produced by field coil 2 also produces induction electromotive force E on electrode 3.Induction electromotive force E is proportional to the flowing velocity V of conducting liquid 4.Therefore just can obtain the flow velocity V of conducting liquid 4 by the voltage at potential electrode 3 two ends thus calculate the volumetric flow rate of conducting liquid 4.
According to the principle of work of electromagnetic flowmeter, this instrument is very responsive to magnetic field.This just needs to carry out magnetic field shielding design to sensor, even if but there is the electromagnet flow meter sensor of very good Magnetic Shielding Effectiveness, can not 100% the impact of high-intensity magnetic field interference on flow measurement of shielding outside.
Find through actual test, when using magnet to apply strong static magnetic field magnetic interference near electromagnet flow meter sensor, will there is relatively large deviation with actual flow in the instantaneous delivery that flowmeter survey obtains.Its reason is exactly the magnetic field that additional static magnetic field have impact on sensor excitation, therefore creates deviation.
Experiment shows when applying strong magnetic at the sensor proximity of electromagnetic flowmeter, and measuring flow will be made less than actual flow when particularly applying strong magnetic near ground electrode, and externally-applied magnetic field is stronger, it is larger that the flow that flow measurement obtains can depart from actual flow.If this defect of electromagnetic flowmeter is found be used by illegal user, to directly affect the measuring accuracy of flowmeter and the actual delivery rate that the actual flow recorded of flowmeter can be caused to be less than supplier (is used in water industry, be exactly steal water behavior), trade settlement dispute can be caused.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of magnetic field abnormal detector of electromagnet flow meter sensor, described device can detect whether described sensor electromagnetic interference (EMI) occurred, send alerting signal when there is electromagnetic interference (EMI) and record this electromagnetic interference (EMI) event, make relevant staff can the interference of Timeliness coverage lawless people flow meter, reduce the loss caused to enterprise, and avoid unnecessary dispute, improve the service level of enterprise.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of magnetic field abnormal detector of electromagnet flow meter sensor, it is characterized in that: comprise magnetic field detection module, disturbance ecology module, alarm output module and alarm logging module, described magnetic field detection Module-embedding in described electromagnet flow meter sensor, for gathering the electromagnetic signal of described sensor; The signal output part of described magnetic field detection module is connected with the signal input part of described disturbance ecology module, and described disturbance ecology module is for identifying that current magnetic field is the alternating magnetic field of described sensor body or the strong magnetic interference in the external world; Described alarm output module is connected with the signal output part of described disturbance ecology module, the tracer signal output terminal of described alarm output module is connected with the signal input part of alarm logging module, described alarm output module is used for when disturbance ecology module detects strong magnetic interference, send alerting signal, the alert event that described alarm logging module sends for recording alarm module.
Further technical scheme is: described alarm output module comprises display screen, there is strong magnetic interference event for showing.
Further technical scheme is: described alarm output module also comprises long range radio transmissions module, for sending the strong magnetic interference event occurred to remote terminal.
Further technical scheme is: described remote terminal comprises mobile phone, computer or PDA.
Further technical scheme is: described disturbance ecology module judges whether to there is strong magnetic interference by the character in magnetic field intensity and magnetic field.
Further technical scheme is: described disturbance ecology module is that alternating magnetic field or static magnetic field judge whether to there is strong magnetic interference by magnetic field intensity and magnetic field.
Further technical scheme is: described magnetic field detection module is linear hall sensor.
The beneficial effect adopting technique scheme to produce is: the magnetic field intensity signal near electromagnet flow meter sensor is passed to disturbance ecology module by the magnetic field detection module on described device, disturbance ecology module goes the magnetic field intensity near discriminating sensor whether to there is strong magnetic interference after receiving this signal, when there being strong magnetic interference near disturbance ecology module judges, control alarm module and send alerting signal teletransmission to client, also mark of reporting to the police can be produced on a display screen, and this alert event is carried out record by alarm logging module, make relevant staff can the interference of Timeliness coverage lawless people flow meter, reduce the loss caused to enterprise, and avoid unnecessary dispute, improve the service level of enterprise.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the principle schematic of Faraday's electromagnetic induction law;
Fig. 2 is the structural representation of electromagnetic flowmeter in prior art;
Fig. 3 is the theory diagram of device of the present invention;
Wherein: 1, lining 2, field coil 3, electrode 4, conducting liquid 5, pipeline 6, exciting current 7, induction electromotive force.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
As shown in Figure 3, the invention discloses a kind of magnetic field abnormal detector of electromagnet flow meter sensor, described device comprises magnetic field detection module, disturbance ecology module, alarm output module and alarm logging module, described magnetic field detection Module-embedding in described electromagnet flow meter sensor, for gathering the electromagnetic signal of described sensor; The signal output part of described magnetic field detection module is connected with the signal input part of described disturbance ecology module, and described disturbance ecology module is for identifying that current magnetic field is the alternating magnetic field of described sensor body or the strong magnetic interference in the external world.In embodiments of the present invention, described disturbance ecology module judges whether to there is strong magnetic interference by the character in magnetic field intensity and magnetic field, further, described disturbance ecology module is that alternating magnetic field or static magnetic field judge whether to there is strong magnetic interference by magnetic field intensity and magnetic field.
Described alarm output module is connected with the signal output part of described disturbance ecology module, and the tracer signal output terminal of described alarm output module is connected with the signal input part of alarm logging module.Described alarm output module is used for when disturbance ecology module detects strong magnetic interference, sends alerting signal, the alert event that described alarm logging module sends for recording alarm module.Described alarm output module comprises display screen and long range radio transmissions module, strong magnetic interference event is there is in described display screen for showing, described long range radio transmissions module is used for sending the strong magnetic interference event (alerting signal) occurred to remote terminal, and described remote terminal can comprise the equipment of mobile phone, computer, PDA or some other routine.
Magnetic field intensity signal near electromagnet flow meter sensor is passed to disturbance ecology module by the magnetic field detection module on described device, disturbance ecology module goes the magnetic field intensity near discriminating sensor whether to there is strong magnetic interference after receiving this signal, when there being strong magnetic interference near disturbance ecology module judges, control alarm module and send alerting signal teletransmission to client, also mark of reporting to the police can be produced on a display screen, and this alert event is carried out record by alarm logging module, make relevant staff can the interference of Timeliness coverage lawless people flow meter, reduce the loss caused to enterprise, and avoid unnecessary dispute, improve the service level of enterprise.
Claims (7)
1. the magnetic field abnormal detector of an electromagnet flow meter sensor, it is characterized in that: comprise magnetic field detection module, disturbance ecology module, alarm output module and alarm logging module, described magnetic field detection Module-embedding in described electromagnet flow meter sensor, for gathering the electromagnetic signal of described sensor; The signal output part of described magnetic field detection module is connected with the signal input part of described disturbance ecology module, and described disturbance ecology module is for identifying that current magnetic field is the alternating magnetic field of described sensor body or the strong magnetic interference in the external world; Described alarm output module is connected with the signal output part of described disturbance ecology module, the tracer signal output terminal of described alarm output module is connected with the signal input part of alarm logging module, described alarm output module is used for when disturbance ecology module detects strong magnetic interference, send alerting signal, the alert event that described alarm logging module sends for recording alarm module.
2. the magnetic field abnormal detector of electromagnet flow meter sensor as claimed in claim 1, is characterized in that: described alarm output module comprises display screen there is strong magnetic interference event for showing.
3. the magnetic field abnormal detector of electromagnet flow meter sensor as claimed in claim 1, is characterized in that: described alarm output module also comprises long range radio transmissions module, for sending the strong magnetic interference event occurred to remote terminal.
4. the magnetic field abnormal detector of electromagnet flow meter sensor as claimed in claim 3, is characterized in that: described remote terminal comprises mobile phone, computer or PDA.
5. the magnetic field abnormal detector of electromagnet flow meter sensor as claimed in claim 1, is characterized in that: described disturbance ecology module judges whether to there is strong magnetic interference by the character in magnetic field intensity and magnetic field.
6. the magnetic field abnormal detector of electromagnet flow meter sensor as claimed in claim 1, is characterized in that: described disturbance ecology module is that alternating magnetic field or static magnetic field judge whether to there is strong magnetic interference by magnetic field intensity and magnetic field.
7. the magnetic field abnormal detector of electromagnet flow meter sensor as claimed in claim 1, is characterized in that: described magnetic field detection module is linear hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610000679.3A CN105424108A (en) | 2016-01-04 | 2016-01-04 | Magnetic field anomaly detection device of electromagnetic flowmeter sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610000679.3A CN105424108A (en) | 2016-01-04 | 2016-01-04 | Magnetic field anomaly detection device of electromagnetic flowmeter sensor |
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| CN105424108A true CN105424108A (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610000679.3A Pending CN105424108A (en) | 2016-01-04 | 2016-01-04 | Magnetic field anomaly detection device of electromagnetic flowmeter sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806921A (en) * | 2017-11-23 | 2018-03-16 | 上海肯特仪表股份有限公司 | Electromagnetic flowmeter magnetic disturbance detects circuit and detection method |
| CN110260937A (en) * | 2019-06-24 | 2019-09-20 | 成都多彩任意门科技有限公司 | A kind of anti-magnetic disturbance flowmeter |
| CN113340383A (en) * | 2020-03-03 | 2021-09-03 | 上海锐铼水务科技有限公司 | Method and system for detecting magnetic field abnormality and compensating error of electromagnetic water meter |
| CN115311823A (en) * | 2022-08-11 | 2022-11-08 | 重庆宇泽森智能装备有限公司 | Gas pipeline monitoring and early warning system and method and storage medium |
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| WO2004044620A1 (en) * | 2002-11-12 | 2004-05-27 | Qinetiq Limited | Ferromagnetic object detector |
| CN101451867A (en) * | 2007-11-30 | 2009-06-10 | 上海银流计测仪器有限公司 | Slurry type electromagnetic flowmeter |
| CN203163780U (en) * | 2012-12-29 | 2013-08-28 | 天津开发区翔龙网络设备有限公司 | Bi-directional detection sensor assembly for intelligent water meter |
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| CN203704997U (en) * | 2014-03-05 | 2014-07-09 | 成都千嘉科技有限公司 | Magnetoelectric direct reading metering device |
| CN205748508U (en) * | 2016-01-04 | 2016-11-30 | 上海肯特仪表股份有限公司 | The magnetic field abnormal detector of electromagnet flow meter sensor |
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- 2016-01-04 CN CN201610000679.3A patent/CN105424108A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004044620A1 (en) * | 2002-11-12 | 2004-05-27 | Qinetiq Limited | Ferromagnetic object detector |
| CN101451867A (en) * | 2007-11-30 | 2009-06-10 | 上海银流计测仪器有限公司 | Slurry type electromagnetic flowmeter |
| CN203163780U (en) * | 2012-12-29 | 2013-08-28 | 天津开发区翔龙网络设备有限公司 | Bi-directional detection sensor assembly for intelligent water meter |
| CN203642975U (en) * | 2013-12-04 | 2014-06-11 | 上海矽睿科技有限公司 | Meter body capable of preventing magnetism invasion |
| CN203704997U (en) * | 2014-03-05 | 2014-07-09 | 成都千嘉科技有限公司 | Magnetoelectric direct reading metering device |
| CN205748508U (en) * | 2016-01-04 | 2016-11-30 | 上海肯特仪表股份有限公司 | The magnetic field abnormal detector of electromagnet flow meter sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806921A (en) * | 2017-11-23 | 2018-03-16 | 上海肯特仪表股份有限公司 | Electromagnetic flowmeter magnetic disturbance detects circuit and detection method |
| CN110260937A (en) * | 2019-06-24 | 2019-09-20 | 成都多彩任意门科技有限公司 | A kind of anti-magnetic disturbance flowmeter |
| CN113340383A (en) * | 2020-03-03 | 2021-09-03 | 上海锐铼水务科技有限公司 | Method and system for detecting magnetic field abnormality and compensating error of electromagnetic water meter |
| CN115311823A (en) * | 2022-08-11 | 2022-11-08 | 重庆宇泽森智能装备有限公司 | Gas pipeline monitoring and early warning system and method and storage medium |
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Application publication date: 20160323 |
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