CN106969806A - A kind of two-wire system series system high-efficiency energy-storage circuit - Google Patents
A kind of two-wire system series system high-efficiency energy-storage circuit Download PDFInfo
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- CN106969806A CN106969806A CN201710173117.3A CN201710173117A CN106969806A CN 106969806 A CN106969806 A CN 106969806A CN 201710173117 A CN201710173117 A CN 201710173117A CN 106969806 A CN106969806 A CN 106969806A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 17
- 230000005284 excitation Effects 0.000 claims abstract description 59
- 230000006698 induction Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- G01F1/60—Circuits therefor
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a kind of two-wire system series system high-efficiency energy-storage circuit, including control circuit, excitation unit, induction electrode, signal processing circuit, electric power management circuit and accumulator, the current output terminal and excitation unit for controlling circuit pass through connection, induction electrode is placed in the side of excitation unit, induced electromotive force at induction electrode induced excitation device, induction electrode passes through connection with signal processing circuit, signal processing circuit passes through connection with control circuit, circuit is controlled to control excitation unit to carry out variable frequency excitation according to induced electromotive force, control circuit is connected with electric power management circuit, electric power management circuit is connected with accumulator, accumulator is also connected with excitation unit.Compared with the prior art, the present invention is by intelligent frequency-conversion control, and measurement range is wide, improves the utilization ratio of energy, enhances magnetic field intensity, enhances primary signal, lifts signal to noise ratio, has ensured the stable accurate metering of instrument.
Description
Technical field
The present invention relates to electromagnetic flowmeter technical field, more particularly to a kind of two-wire system series system high-efficiency energy-storage circuit.
Background technology
Electromagnetic flowmeter is a kind of foundation Faraday's electromagnetic induction law to measure the instrument of conducting liquid volume flow.Its
Magnetic field is applied to detected fluid by magnet exciting coil, so that by detecting in magnetic field the induced electromotive force of moving fluid and carrying out phase
The signal transacting answered realizes that flow is accurately measured.Electromagnetic flowmeter is made due to its sensor its structural design and its measuring principle
Obtain and substantial amounts of noise is doped with its output signal, such as orthogonal interference (differential interference), same mutually interference (eddy current effect), power frequency are done
Disturb (common mode disturbances, series mode interference), polarization noise, hydrodynamic noise and slurries noise etc..These noise bands spread all over signal bandwidth,
And amplitude is even more than the amplitude of signal.It is main from excitation mode and signal in application at present to eliminate the influence of these noises
From the aspect of processing two.So, the excitation con-trol technology and signal processing technology of electromagnetic flowmeter are the keys of electromagnetic flowmeter.
Electromagnetic flowmeter survey bore is bigger, and power consumption is bigger, and because two-wire system electromagnetic flowmeter belongs to low-power consumption product,
The current limit of loop service causes the universal bore of two-wire system electromagnetic flowmeter smaller in the range of 4-20mA, tries out narrow range,
The current traditional power taking of two-wire system electromagnetic flowmeter is that, by power taking in parallel on loop, due to power taking in parallel, system works, communication etc.
The electric current divided in bus, because bus current is very low, only 4-20mA, after shunting, the energy of supply excitation driving is just
It is very limited, thus cause the not enough situation of energy supply and occur, or can not normal work under conditions of loop low current
Make.
The content of the invention
The technical problems to be solved by the invention are to provide one kind by power taking and the energy storage mode of connecting, and improve energy
Utilization ratio, enhances magnetic field intensity, enhances primary signal, lifts signal to noise ratio, has ensured instrument stabilization is accurately measured two
Line series system high-efficiency energy-storage circuit.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of two-wire system series system high-efficiency energy-storage circuit,
Including control circuit, excitation unit, induction electrode, signal processing circuit, electric power management circuit and accumulator, the control electricity
The current output terminal on road is with the excitation unit by connection, and the induction electrode is placed in the side of the excitation unit,
The induction electrode senses the induced electromotive force at the excitation unit, the signal output part of the induction electrode and the signal
The signal input part of process circuit passes through connection, the signal output part of the signal processing circuit and the control circuit
Signal input part is by connection, and the control circuit controls excitation unit to carry out variable frequency excitation, institute according to induced electromotive force
The current input terminal for stating control circuit is connected with the current output terminal of the electric power management circuit, the electricity of the electric power management circuit
Stream input is connected with the current output terminal of the accumulator, and the current output terminal of the accumulator is also filled with the excitation
Put connection.
The beneficial effects of the invention are as follows：By the way that as above, maximization will be reached using energy efficiency, so as to limited
There is provided stronger magnetic field under power condition, the measurement range of low-power consumption two-wire system electromagnetic flowmeter is effectively improved；Furthermore pass through storage
Can the direct waste that excitation is carried out to excitation unit, intermediate energy is reduced of circuit.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, in addition to telecommunication circuit, the telecommunication circuit passes through connection with the control circuit.
Beneficial effect using above-mentioned further scheme is：Telecommunication circuit is easy to outside to controlling circuit to carry out data transmission
And control.
Further, in addition to key circuit, the key circuit passes through connection with the control circuit.
Beneficial effect using above-mentioned further scheme is：Key circuit is easy to be controlled control circuit and parameter is set
Put.
Further, in addition to display device, the display device passes through connection with the control circuit.
Beneficial effect using above-mentioned further scheme is：Display device is easy to the number in testing result and test process
According to being shown.
Further, it is described to control circuit to 4~20mA of the excitation unit output current.
Beneficial effect using above-mentioned further scheme is：Increase test scope, lift measuring accuracy.
Further, the signal processing circuit includes signal amplification unit and AD conversion unit, and the signal amplification is single
The signal input part of member is connected with the signal output part of the induction electrode, the signal output part and mould of the signal amplification unit
The signal input part connection of number converting unit, the signal of the signal output part of the AD conversion unit and the control circuit is defeated
Enter end connection.
Beneficial effect using above-mentioned further scheme is：Signal amplification unit and AD conversion unit coordinate operation, it is real
Signal amplification and analog-to-digital conversion, lifting detection data precision now are carried out to the detection signal of induction electrode.
Brief description of the drawings
Fig. 1 is a kind of module frame chart of two-wire system series system high-efficiency energy-storage circuit of the invention；
Fig. 2 is the module frame chart of signal processing circuit；
Fig. 3 is the change schematic diagram for the primary signal that excitation unit series connection power taking is produced.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, circuit is controlled, 2, excitation unit, 3, induction electrode；
4th, signal processing circuit, 41, signal amplification unit, 42, AD conversion unit；
5th, electric power management circuit, 6, accumulator, 7, telecommunication circuit, 8, key circuit, 9, display device.
B representation signal intensity in Fig. 3, T represents the time.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figures 1 to 3, a kind of two-wire system series system high-efficiency energy-storage circuit, including control circuit 1, excitation unit 2,
Induction electrode 3, signal processing circuit 4, electric power management circuit 5 and accumulator 6, it is described control circuit 1 current output terminal with
The excitation unit 2 is by connection, and the induction electrode 3 is placed in the side of the excitation unit 2, the induction electrode 3
Sense the induced electromotive force at the excitation unit 2, the signal output part of the induction electrode 3 and the signal processing circuit 4
Signal input part by connection, the signal of the signal output part of the signal processing circuit 4 and the control circuit 1 is defeated
Enter end by connection, the control circuit 1 controls excitation unit 2 to carry out variable frequency excitation, the control according to induced electromotive force
The current input terminal of circuit 1 processed is connected with the current output terminal of the electric power management circuit 5, the electricity of the electric power management circuit 5
Stream input is connected with the current output terminal of the accumulator 6, the current output terminal of the accumulator 6 also with the excitation
Device 2 is connected.
The present embodiment controls circuit 1 to be powered to excitation unit 2 into row energization, has electric current to flow through on the coil of excitation unit 2,
Magnetic field can be produced, when exciting current reaches stable state, electric current will produce stable magnetic field, according to farad not in change in space
The law of electromagnetic induction, in magnetic field, the electric charge of motion can produce electromotive force, can be produced between excitation unit 2 and induction electrode 3
Electromotive force E, as shown in figure 3, due to the induced electromotive force E of induction electrode 3, generating induced signal, passes through 4 pairs of senses of signal processing circuit
Induction signal carries out signal transacting, and the induced signal after processing is exported to control circuit 1, and the signal of the flow of measurement is bigger,
Coil current on the coil of excitation unit 2 is bigger, and the electromotive force E that induced signal is shown is also bigger, when coil current reaches more greatly
Coil current on setting electric current threshold values, the control control coil of excitation unit 2 of circuit 1, is encouraged using corresponding excitation frequency
Magnetic, using excitation frequency is improved, by unnecessary energy utilization, frequency is higher, and response speed is faster, has so both solved response
Speed issue, also rationally utilizes energy；Furthermore excitation is directly carried out to excitation unit 2 by accumulator 6, middle energy is reduced
The waste of amount, during excitation, accumulator 6 releases energy, and allows excitation unit 2 to quickly reach magnetic saturation, after excitation terminates, and closes
Excitation, energy storage is carried out to accumulator 6, and such dynamic circulation ensures energy stabilization, improves efficiency of energy utilization, reduced
Loss in journey, so as to greatly improve performance, while enhancing primary signal, lifts signal to noise ratio, has ensured that instrument is stable accurate
Really metering.
It is preferred that, in addition to telecommunication circuit 7, the telecommunication circuit 7 and the control circuit 1 pass through connection.
The telecommunication circuit 7 of the present embodiment realizes external device (ED) by wireless signal to control by being connected with control circuit 1
Circuit 1 sends control signal, and control circuit 1 is controlled, and can also be transmitted by telecommunication circuit 7 to outside and detect data,
It is convenient for data analysis.
It is preferred that, in addition to key circuit 8, the key circuit 8 and the control circuit 1 pass through connection.
The key circuit 8 of the present embodiment can send control signal to control circuit 1, be easy to the control to controlling circuit 1,
The parameter for controlling circuit 1 can also be configured so that the need for the control running of circuit 1 adapts to various test conditions, carry
Rise accurate testing and the scope of application.
It is preferred that, in addition to display device 9, the display device 9 and the control circuit 1 pass through connection.
The display device 9 of the present embodiment can be shown to the data in testing result and test process in real time, be easy to survey
Examination personnel are adjusted in real time, so that the present apparatus adapts to different test environments.
It is preferred that, it is described to control circuit 1 to the 4~20mA of output current of excitation unit 2.
The control circuit 1 of the present embodiment can increase excitation unit 2 to the 4~20mA of output current of excitation unit 2
Test scope, lifts measuring accuracy.
It is preferred that, as shown in Fig. 2 the signal processing circuit 4 includes signal amplification unit 41 and AD conversion unit 42,
The signal input part of the signal amplification unit 41 is connected with the signal output part of the induction electrode 3, and the signal amplification is single
The signal input part connection of the signal output part and AD conversion unit 42 of member 41, the signal output of the AD conversion unit 42
The signal input part with the control circuit 1 is held to be connected.
The induced signal of induction electrode 3 of the present embodiment only has the rank of tens microvolts, and control circuit 1 can not be recognized effectively,
Just signal enhanced processing must be carried out by signal amplification unit 41, after having amplified, turned by the modulus of AD conversion unit 42
Change, the data signal for controlling circuit 1 to recognize is converted into, by controlling the internal algorithm of circuit 1 to calculate present flow rate
Value, compares according to present flow rate value with the range that instrument is set, and exports corresponding 4-20mA coil current signals.
The present apparatus will reach maximization, so as in limited power by intelligent frequency-conversion control using energy efficiency
Under the conditions of there is provided stronger magnetic field, effectively improve the measurement range of low-power consumption two-wire system electromagnetic flowmeter；Electrode is carried out at technique
Reason, reduces the noise jamming in signal, and signal to noise ratio increase realizes more accurate measurement, obtains the less number of error
According to；Furthermore excitation is directly carried out to excitation unit 2 by accumulator 6, the waste of intermediate energy is reduced, during excitation, energy storage electricity
Road 6 releases energy, and allows excitation unit 2 to quickly reach magnetic saturation, after excitation terminates, and closes excitation, accumulator 6 is stored up
Can, such dynamic circulation ensures energy stabilization, improves efficiency of energy utilization, the loss during reduction, so as to greatly promote
Performance.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (6)
1. a kind of two-wire system series system high-efficiency energy-storage circuit, it is characterised in that：Including control circuit (1), excitation unit (2),
Induction electrode (3), signal processing circuit (4), electric power management circuit (5) and accumulator (6), the electricity of the control circuit (1)
Output end is flowed with the excitation unit (2) by connection, and the induction electrode (3) is placed in the one of the excitation unit (2)
Side, the induction electrode (3) senses the induced electromotive force at excitation unit (2) place, the signal output of the induction electrode (3)
End and the signal input part of the signal processing circuit (4) pass through connection, the signal output of the signal processing circuit (4)
End is with the signal input part for controlling circuit (1) by connection, and the control circuit (1) is according to induced electromotive force control
Excitation unit (2) carries out variable frequency excitation, the current input terminal of the control circuit (1) and the electricity of the electric power management circuit (5)
Output end connection is flowed, the current input terminal of the electric power management circuit (5) connects with the current output terminal of the accumulator (6)
Connect, the current output terminal of the accumulator (6) is also connected with the excitation unit (2).
2. a kind of two-wire system series system high-efficiency energy-storage circuit according to claim 1, it is characterised in that：Also include communication electricity
Road (7), the telecommunication circuit (7) passes through connection with the control circuit (1).
3. a kind of two-wire system series system high-efficiency energy-storage circuit according to claim 1, it is characterised in that：Also include button electricity
Road (8), the key circuit (8) passes through connection with the control circuit (1).
4. a kind of two-wire system series system high-efficiency energy-storage circuit according to claim 1, it is characterised in that：Also include display dress
Put (9), the display device (9) passes through connection with the control circuit (1).
5. a kind of two-wire system series system high-efficiency energy-storage circuit according to claim 1, it is characterised in that：The control circuit
(1) to the excitation unit (2) 4~20mA of output current.
6. according to a kind of any one of claim 1 to 5 two-wire system series system high-efficiency energy-storage circuit, it is characterised in that：Institute
Stating signal processing circuit (4) includes signal amplification unit (41) and AD conversion unit (42), the signal amplification unit (41)
Signal input part be connected with the signal output part of the induction electrode (3), the signal output of the signal amplification unit (41)
The signal input part of end and AD conversion unit (42) is connected, signal output part and the control of the AD conversion unit (42)
The signal input part connection of circuit (1) processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173117.3A CN106969806A (en) | 2017-03-22 | 2017-03-22 | A kind of two-wire system series system high-efficiency energy-storage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173117.3A CN106969806A (en) | 2017-03-22 | 2017-03-22 | A kind of two-wire system series system high-efficiency energy-storage circuit |
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| Publication Number | Publication Date |
|---|---|
| CN106969806A true CN106969806A (en) | 2017-07-21 |
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| CN201710173117.3A Pending CN106969806A (en) | 2017-03-22 | 2017-03-22 | A kind of two-wire system series system high-efficiency energy-storage circuit |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762370A (en) * | 2009-12-31 | 2010-06-30 | 苏州东菱振动试验仪器有限公司 | Centralized control method for vibration experiment system in multiple integrated environments and device thereof |
| CN102622961A (en) * | 2012-03-30 | 2012-08-01 | 山东大学 | Real-time information display system and method for similarity model test |
| CN103453951A (en) * | 2013-08-20 | 2013-12-18 | 杭州云谷科技有限公司 | Synchronous sampling method and device for signals of electromagnetic flowmeter |
| CN203561384U (en) * | 2013-10-09 | 2014-04-23 | 杭州泰格医药科技股份有限公司 | Improved data collector |
| CN203758557U (en) * | 2014-03-17 | 2014-08-06 | 浙江迪元仪表有限公司 | Intelligent electromagnetic flowmeter sensor |
| CN105021241A (en) * | 2015-07-10 | 2015-11-04 | 合肥工业大学 | PWM electromagnetic flowmeter excitation control system based on current error control |
| CN204831411U (en) * | 2015-07-23 | 2015-12-02 | 深圳市拓安信计控仪表有限公司 | Electromagnetic water meter |
| CN105806426A (en) * | 2014-12-31 | 2016-07-27 | 重庆川仪自动化股份有限公司 | Short-time excitation and signal processing method for electromagnetic flowmeter |
| CN206959923U (en) * | 2017-03-22 | 2018-02-02 | 重庆川仪自动化股份有限公司 | A kind of two-wire system series system high-efficiency energy-storage circuit |
-
2017
- 2017-03-22 CN CN201710173117.3A patent/CN106969806A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762370A (en) * | 2009-12-31 | 2010-06-30 | 苏州东菱振动试验仪器有限公司 | Centralized control method for vibration experiment system in multiple integrated environments and device thereof |
| CN102622961A (en) * | 2012-03-30 | 2012-08-01 | 山东大学 | Real-time information display system and method for similarity model test |
| CN103453951A (en) * | 2013-08-20 | 2013-12-18 | 杭州云谷科技有限公司 | Synchronous sampling method and device for signals of electromagnetic flowmeter |
| CN203561384U (en) * | 2013-10-09 | 2014-04-23 | 杭州泰格医药科技股份有限公司 | Improved data collector |
| CN203758557U (en) * | 2014-03-17 | 2014-08-06 | 浙江迪元仪表有限公司 | Intelligent electromagnetic flowmeter sensor |
| CN105806426A (en) * | 2014-12-31 | 2016-07-27 | 重庆川仪自动化股份有限公司 | Short-time excitation and signal processing method for electromagnetic flowmeter |
| CN105021241A (en) * | 2015-07-10 | 2015-11-04 | 合肥工业大学 | PWM electromagnetic flowmeter excitation control system based on current error control |
| CN204831411U (en) * | 2015-07-23 | 2015-12-02 | 深圳市拓安信计控仪表有限公司 | Electromagnetic water meter |
| CN206959923U (en) * | 2017-03-22 | 2018-02-02 | 重庆川仪自动化股份有限公司 | A kind of two-wire system series system high-efficiency energy-storage circuit |
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Application publication date: 20170721 |