CN108242803A - Pressure transmitter circuit - Google Patents
Pressure transmitter circuit Download PDFInfo
- Publication number
- CN108242803A CN108242803A CN201611208167.2A CN201611208167A CN108242803A CN 108242803 A CN108242803 A CN 108242803A CN 201611208167 A CN201611208167 A CN 201611208167A CN 108242803 A CN108242803 A CN 108242803A
- Authority
- CN
- China
- Prior art keywords
- voltage
- inverting circuit
- protection module
- power supply
- pressure inverting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000011888 foil Substances 0.000 claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000006641 stabilisation Effects 0.000 claims abstract description 6
- 238000011105 stabilization Methods 0.000 claims abstract description 6
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000008054 signal transmission Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Abstract
The invention discloses a kind of pressure inverting circuit, including clamper protection module, linear voltage regulator and foil gauge；The input terminal of clamper protection module is electrically connected with power supply, and the output terminal of clamper protection module is electrically connected by linear voltage regulator with the feeder ear of foil gauge；Clamper protection module is used to carry out the input voltage of power supply limit filtration processing, and voltage is delivered to linear voltage regulator by treated；Linear voltage stabilization is used to carry out the voltage of input voltage stabilizing processing, and voltage is delivered to foil gauge by treated.Clamper protection module in the present invention realizes input voltage (being delivered to pressure transmitter circuit through distribution wire) limit filtration processing; moment big voltage and current is filtered; effectively overcome the impulse disturbances of input voltage; and then the Hz noise generated by distribution wire and pressure signal transmission line coupling has been filtered significantly; the strong anti-interference performance and stability of circuit are enhanced, and the pressure transmitter circuit of the present invention is simple in structure.
Description
Technical field
The present invention relates to a kind of pressure transmitter circuits.
Background technology
During industrial production and manufacturing, wirking pressure transmitter measures liquid level, density and the pressure of liquid, gas or steam
Power is measured with supplying the secondary meters such as indicator alarm, recorder, adjuster or control system, indicated and procedure regulation.
In the pressure transmitter course of work, since the distribution wire of pressure transmitter is easily produced with neighbouring pressure signal transmission line by coupling
Raw Hz noise, due to the presence of above-mentioned interference can influence the data acquisition of pressure transmitter accuracy and data transmission it is steady
It is qualitative.In the prior art, though there is anti-interference protective circuit, there are the defects of interference free performance difference and bad stability.
Invention content
The technical problem to be solved by the present invention is in order to overcome pressure transmitter circuit interference free performance of the prior art
The defects of poor and stability is bad, provides a kind of pressure transmitter circuit.
The present invention is to solve above-mentioned technical problem by following technical proposals：
A kind of pressure inverting circuit, feature are that the pressure inverting circuit includes clamper protection module, linear voltage stabilization
Device and foil gauge；
The input terminal of the clamper protection module is electrically connected with power supply, and the output terminal of the clamper protection module passes through
The linear voltage regulator is electrically connected with the feeder ear of the foil gauge；
The clamper protection module is used to carry out limit filtration processing to the input voltage of power supply, and by treated
Voltage is delivered to the linear voltage regulator；
The linear voltage stabilization is used to carry out the voltage of input voltage stabilizing processing, and voltage is delivered to described answer by treated
Become piece.
In the present solution, clamper protection module realizes limit to input voltage (being delivered to pressure transmitter circuit through distribution wire)
Width filtering process has filtered moment big voltage and current, has effectively overcomed the impulse disturbances of input voltage, and then filtered significantly
Because of the Hz noise that distribution wire and pressure signal transmission line coupling generate, the strong anti-interference performance and stabilization of circuit are enhanced
Property, and the pressure transmitter circuit of the present invention is simple in structure.
Preferably, the pressure inverting circuit further includes power supply source input interface, the input terminal of the clamper protection module
It is electrically connected by the power supply source input interface with the power supply.Pressure transmitter is convenient in the setting of power supply source input interface
The connection of circuit and power supply.
Preferably, the pressure inverting circuit further includes analog voltage output interface, the output terminal of the foil gauge and institute
State the electrical connection of analog voltage output interface.The setting of analog voltage output interface is convenient for pressure transmitter circuit and the company of load
It connects.
Preferably, the pressure inverting circuit further includes instrument amplifier；
The output terminal of the foil gauge is electrically connected by the instrument amplifier with the analog voltage output interface；
The linear voltage regulator is powered for the instrument amplifier.
Preferably, the pressure inverting circuit further includes dual operational amplifier；
The output terminal of the foil gauge passes through the instrument amplifier and the dual operational amplifier and the analog voltage
Output interface electrical connection output terminal electrical connection.
Preferably, the power supply source input interface further includes diode, the cathode of the diode is protected with the clamper
The input terminal electrical connection of module, anode are electrically connected with the power supply.
Preferably, the power supply source input interface further includes a capacitance, the capacitance of the capacitance is 10nF；
One end ground connection of the capacitance, the other end are electrically connected with the cathode of the diode.
Preferably, the clamper protection module includes ceramic discharge tube in parallel, varistor, transient suppression diode.
Preferably, the foil gauge is attached on an elastomer.
The positive effect of the present invention is：Clamper protection module in the present invention is (defeated through distribution wire to input voltage
Send to pressure transmitter circuit) limit filtration processing is realized, moment big voltage and current has been filtered, has effectively overcomed input
The impulse disturbances of voltage, and then the Hz noise generated by distribution wire and pressure signal transmission line coupling, enhancing have been filtered significantly
The strong anti-interference performance and stability of circuit, and the pressure transmitter circuit of the present invention is simple in structure.
Description of the drawings
Fig. 1 is a preferred embodiment of the present invention the module diagram of pressure inverting circuit.
Specific embodiment
It is further illustrated the present invention below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
The pressure inverting circuit of the present embodiment include power supply source input interface 1, clamper protection module 2, linear voltage regulator 3,
Foil gauge 4, instrument amplifier 5, dual operational amplifier 6 and analog voltage output interface 7.The input terminal of clamper protection module and confession
8 input interface of power supply is electrically connected, and the output terminal of clamper protection module 2 passes through the feeder ear of linear voltage regulator 3 and foil gauge 4 electricity
Connection, the output terminal of foil gauge 4 are electrically connected by instrument amplification 5 and dual operational amplifier 6 with analog voltage output interface 7, and
Foil gauge, which is attached to an elastomer, (can be promptly restored to the macromolecule material close to original state and size after a kind of stress relaxation
Material) on.Clamper protection module in the present embodiment includes ceramic discharge tube in parallel, varistor, transient suppression diode.
When pressure inverting circuit works, power supply source input interface is electrically connected with power supply, and power supply is external electrical
Source provides the electric energy needed for work for the component in pressure inverting circuit.Make to play reverse protection to pressure inverting circuit
With the power supply source input interface of the present embodiment includes diode, then the cathode of diode and the input of clamper protection module at this time
End electrical connection, anode are electrically connected with power supply.The power supply source input interface further includes capacitance, capacitance 10nF, capacitance
One end is grounded, and the other end is electrically connected with the cathode of diode.So as to which the input voltage that power supply is exported through distribution wire passes through two
The filtering of the high-voltage capacitance of pole pipe reverse protection and ground connection, exports to clamper protection module, clamper protection module is to input voltage
It carries out limit filtration processing and is sent to linear voltage regulator, clamper protection module has filtered moment big voltage and current, effectively
Overcome the impulse disturbances of input voltage.Processed power supplying line voltage-stablizer, linear voltage stabilization carry out the voltage of input
Voltage stabilizing is handled, and by treated, voltage is delivered to foil gauge and instrument amplifier, and electricity is provided for foil gauge and instrument amplifier
Pressure.When the pressure action of the tested fluid flowed is in elastomer, elastomer deforms upon, the foil gauge hair being attached on elastomer
Raw resistance strain effect.Based on Hooke's law, in elastic limit, the deformation of object is with the original that causes the external force of deformation directly proportional
Pressure is converted linear electric signal by the foil gauge on elastomer by reason, i.e., under pressure, elastomer generates micro
Deformation after the foil gauge of the upper end experiences its deformation, generates electricresistance effect and simultaneously exports voltage directly proportional to actuating pressure size and believe
Number, amplify through instrument amplifier level-one, after the amplification of double operational two level, analog voltage signal is exported to secondary meter or control system
System, to realize further measurement or procedure regulation.
So as to which the pressure transmitter circuit of the present embodiment not only realizes reverse protection, and over-current over-voltage protection also has anti-
The advantages that jamming performance is strong, and stability is good, and then the measuring accuracy of pressure transmitter circuit is improved, make its application range more
Extensively.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (9)
1. a kind of pressure inverting circuit, which is characterized in that the pressure inverting circuit includes clamper protection module, linear voltage regulator
And foil gauge；
The input terminal of the clamper protection module is electrically connected with power supply, and the output terminal of the clamper protection module passes through described
Linear voltage regulator is electrically connected with the feeder ear of the foil gauge；
The clamper protection module is used to carry out the input voltage of power supply limit filtration processing, and will treated voltage
It is delivered to the linear voltage regulator；
The linear voltage stabilization is used to carry out the voltage of input voltage stabilizing processing, and voltage is delivered to the strain by treated
Piece.
2. pressure inverting circuit as described in claim 1, which is characterized in that it is defeated that the pressure inverting circuit further includes power supply source
Incoming interface, the input terminal of the clamper protection module are electrically connected by the power supply source input interface with the power supply.
3. pressure inverting circuit as described in claim 1, which is characterized in that the pressure inverting circuit further includes analog voltage
Output interface, the output terminal of the foil gauge are electrically connected with the analog voltage output interface.
4. pressure inverting circuit as claimed in claim 3, which is characterized in that the pressure inverting circuit further includes instrument amplification
Device；
The output terminal of the foil gauge is electrically connected by the instrument amplifier with the analog voltage output interface；
The linear voltage regulator is powered for the instrument amplifier.
5. pressure inverting circuit as claimed in claim 4, which is characterized in that the pressure inverting circuit further includes double operations and puts
Big device；
The output terminal of the foil gauge is exported by the instrument amplifier and the dual operational amplifier with the analog voltage
Interface electrical connection output terminal electrical connection.
6. pressure inverting circuit as claimed in claim 2, which is characterized in that the power supply source input interface further includes two poles
Pipe, the cathode of the diode are electrically connected with the input terminal of the clamper protection module, and anode is electrically connected with the power supply.
7. pressure inverting circuit as claimed in claim 6, which is characterized in that the power supply source input interface further includes an electricity
Hold, the capacitance of the capacitance is 10nF；
One end ground connection of the capacitance, the other end are electrically connected with the cathode of the diode.
8. pressure inverting circuit as described in claim 1, which is characterized in that the clamper protection module includes ceramics in parallel
Discharge tube, varistor, transient suppression diode.
9. pressure inverting circuit as described in claim 1, which is characterized in that the foil gauge is attached on an elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208167.2A CN108242803A (en) | 2016-12-23 | 2016-12-23 | Pressure transmitter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208167.2A CN108242803A (en) | 2016-12-23 | 2016-12-23 | Pressure transmitter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108242803A true CN108242803A (en) | 2018-07-03 |
Family
ID=62704191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611208167.2A Withdrawn CN108242803A (en) | 2016-12-23 | 2016-12-23 | Pressure transmitter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108242803A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08322143A (en) * | 1995-05-26 | 1996-12-03 | Fujitsu Ltd | Power supply for communication unit with fast transient noise suppressing function |
| US6220103B1 (en) * | 1996-07-15 | 2001-04-24 | Engineering Measurements Company | Vortex detector and flow meter |
| CN101266145A (en) * | 2008-04-14 | 2008-09-17 | 西安理工大学 | Atmospheric pressure altimeter for measuring using multilayer perception machine nerval net and the measurement method |
| CN201409086Y (en) * | 2009-05-15 | 2010-02-17 | 天津肯泰仪表有限公司 | Antijamming power supply circuit of pressure transmitter |
| JP2011033385A (en) * | 2009-07-30 | 2011-02-17 | Yokogawa Electric Corp | Coriolis mass flowmeter |
| CN102806900A (en) * | 2012-08-16 | 2012-12-05 | 安徽江淮汽车股份有限公司 | Vacuum assist brake controller for electric automobile |
| US20130191059A1 (en) * | 2011-12-23 | 2013-07-25 | Chauvin Arnoux | Earth/ground clamp for measuring earth resistance of electrical installations |
| WO2013163879A1 (en) * | 2012-05-03 | 2013-11-07 | 华为技术有限公司 | Clamping protection circuit, resonance circuit and convertor |
| CN103487209A (en) * | 2012-06-13 | 2014-01-01 | 中国石油化工股份有限公司 | Multi-station differential pressure and pressure transmitter calibration table |
| CN103915829A (en) * | 2012-12-28 | 2014-07-09 | 北京谊安医疗系统股份有限公司 | Overvoltage absorption protection circuit |
| CN204680195U (en) * | 2015-05-25 | 2015-09-30 | 唐国富 | A kind of pressure unit and digital signal pressure transmission device |
| CN106093494A (en) * | 2016-08-22 | 2016-11-09 | 四方继保（武汉）软件有限公司 | A kind of signal for electronic mutual inductor protects filter circuit |
| CN206379721U (en) * | 2016-12-23 | 2017-08-04 | 上海朝辉压力仪器有限公司 | Pressure transmitter circuit |
-
2016
- 2016-12-23 CN CN201611208167.2A patent/CN108242803A/en not_active Withdrawn
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08322143A (en) * | 1995-05-26 | 1996-12-03 | Fujitsu Ltd | Power supply for communication unit with fast transient noise suppressing function |
| US6220103B1 (en) * | 1996-07-15 | 2001-04-24 | Engineering Measurements Company | Vortex detector and flow meter |
| CN101266145A (en) * | 2008-04-14 | 2008-09-17 | 西安理工大学 | Atmospheric pressure altimeter for measuring using multilayer perception machine nerval net and the measurement method |
| CN201409086Y (en) * | 2009-05-15 | 2010-02-17 | 天津肯泰仪表有限公司 | Antijamming power supply circuit of pressure transmitter |
| JP2011033385A (en) * | 2009-07-30 | 2011-02-17 | Yokogawa Electric Corp | Coriolis mass flowmeter |
| US20130191059A1 (en) * | 2011-12-23 | 2013-07-25 | Chauvin Arnoux | Earth/ground clamp for measuring earth resistance of electrical installations |
| WO2013163879A1 (en) * | 2012-05-03 | 2013-11-07 | 华为技术有限公司 | Clamping protection circuit, resonance circuit and convertor |
| CN103487209A (en) * | 2012-06-13 | 2014-01-01 | 中国石油化工股份有限公司 | Multi-station differential pressure and pressure transmitter calibration table |
| CN102806900A (en) * | 2012-08-16 | 2012-12-05 | 安徽江淮汽车股份有限公司 | Vacuum assist brake controller for electric automobile |
| CN103915829A (en) * | 2012-12-28 | 2014-07-09 | 北京谊安医疗系统股份有限公司 | Overvoltage absorption protection circuit |
| CN204680195U (en) * | 2015-05-25 | 2015-09-30 | 唐国富 | A kind of pressure unit and digital signal pressure transmission device |
| CN106093494A (en) * | 2016-08-22 | 2016-11-09 | 四方继保（武汉）软件有限公司 | A kind of signal for electronic mutual inductor protects filter circuit |
| CN206379721U (en) * | 2016-12-23 | 2017-08-04 | 上海朝辉压力仪器有限公司 | Pressure transmitter circuit |
Non-Patent Citations (2)
| Title |
|---|
| 王长密;马小永;: "HART协议通用压力变送器的设计", 中国仪器仪表, no. 12 * |
| 赵宏伟等: "《尺蠖型压电旋转驱动器钳位特性分析》", 《西安交通大学学报》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180703 |
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| WW01 | Invention patent application withdrawn after publication |