CN207894364U - A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester - Google Patents
A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester Download PDFInfo
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- CN207894364U CN207894364U CN201820361924.8U CN201820361924U CN207894364U CN 207894364 U CN207894364 U CN 207894364U CN 201820361924 U CN201820361924 U CN 201820361924U CN 207894364 U CN207894364 U CN 207894364U
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- magnetostrictive displacement
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Abstract
A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester, including two identical magnetostrictive displacement sensors, a magnetostrictive displacement sensor forward direction installation, another magnetostrictive displacement sensor is reversely installed.Two identical magnetostrictive displacement sensors connect the Analog input mModule of controller by the different core wires in same root cable；Controller is used to collected two-way magnetostrictive displacement sensor displacement signal making the numerical value being averaged to handle.Displacement is connect using a kind of governor master of electromagnetism interference of the utility model and accurately measures harvester, governor master can obviously be eliminated and connect the influence of electromagnetic interference signal and governor servomotor deformation of timbering to measurement collection result in displacement signal transmission process, it avoids measuring collected displacement signal distortion and saltus step, ensures that governor master connects the accurate measurement acquisition of displacement signal.
Description
Technical field
A kind of governor master of electromagnetism interference of the utility model connects displacement and accurately measures harvester, is related to governor master
Connect displacement signal measurement technical field.
Background technology
Currently, governor master, which connects displacement signal measurement acquisition, generally uses magnetostrictive displacement sensor.Sensor is general
By servomotor in water wheel chamber, and acquisition controller is located in governor electric panel cabinet, general very to disk cabinet distance from now
Far.Since displacement sensor output loop anti-electromagnetic interference capability is poor, the current signal Long Distant Transmit of 4~20mA be easy by
The electromagnetic interference influence of ambient enviroment；There are when the strong-electromagnetic fields interference source such as motor around especially, collected displacement is measured
Signal is easy distortion, generates hopping phenomenon.
Further, since the sliding block of the first magnetostrictive displacement sensor 1 and the second magnetostrictive displacement sensor 2 is fixed on
On servomotor displacement sensor side stand, when governor servomotor moves, side stand will produce deformation, and measurement is caused to collect
Displacement signal it is inaccurate.
Invention content
Displacement is connect using single magnetostrictive displacement sensor measurement governor master for solution is existing, is easy dry by electromagnetism
It disturbs distortion, generate hopping phenomenon；And deformation of timbering influences the problem of accuracy of measurement.The utility model provides a kind of anti-electromagnetism
The governor master of interference connects displacement and accurately measures harvester, based on double magnetostrictive displacement sensor output signals, using difference
Method is divided to eliminate the influence of outside electromagnetic interference and governor servomotor side stand deformation to measurement collection result, it is accurate to measure
Acquisition governor master connects displacement.
The technical solution that the utility model is taken is：
A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester, including two identical magnetostriction
Displacement sensor, a magnetostrictive displacement sensor forward direction installation, another magnetostrictive displacement sensor are reversely installed；
Two identical magnetostrictive displacement sensors connect the mould of controller by the different core wires in same root cable
Analog quantity input module；
Controller is used to make collected two-way magnetostrictive displacement sensor displacement signal at the numerical value being averaged
Reason.
A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester, the first magnetostrictive displacement sensing
Device, the second magnetostrictive displacement sensor are collateral mounted on servomotor displacement sensor by the first sliding block, the second sliding block respectively
On frame, the first magnetostrictive displacement sensor forward direction installation, the second magnetostrictive displacement sensor is reversely installed, first magnetic
Telescopic displacement sensor, the second magnetostrictive displacement sensor is caused to connect the analog quantity of PLC controller by signal-transmitting cable
Input module, Measurement channel are respectively channel 1#, channel 2#.
The servomotor displacement sensor side stand connects servomotor displacement arm, and servomotor displacement arm bottom is located at servomotor
In pressure chamber.
Displacement is connect using a kind of governor master of electromagnetism interference of the utility model and accurately measures harvester, it can be apparent
Elimination governor master connects electromagnetic interference signal and governor servomotor deformation of timbering in displacement signal transmission process and is acquired to measuring
As a result influence avoids measuring collected displacement signal distortion and saltus step, ensures that governor master connects the accurate survey of displacement signal
Amount acquisition.
Description of the drawings
Fig. 1 is the signal of two identical magnetostrictive displacement sensor installations in the utility model exemplary embodiment
Figure.
Fig. 2 is that the deformation of servomotor displacement sensor side stand influences schematic diagram to measurement result in the utility model.
Fig. 3 is the schematic diagram of two magnetostrictive displacement sensor output signal transmission channels in the utility model.
Wherein：
The first magnetostrictive displacement sensors of 1-, the second magnetostrictive displacement sensors of 2-, 3- servomotor displacement arms, 4- connect
Power device displacement sensor side stand, 5- servomotor pressure chambers.
The-the first magnetostrictive displacement sensor of A planes is worked to the last minute displacement,
The-the first magnetostrictive displacement sensor null drift of B planes,
The a certain displacement of servomotor in C planes-magnetostrictive displacement sensor range ability,
M- motors,
Offset deviation caused by the deformation of △ X- governor servomotor side stands,
The electromagnetic interference signal of the strong-electromagnetic fields interference sources such as △ I- motors release.
Specific implementation mode
A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester, using two identical magnetostriction
Displacement sensor, a magnetostrictive displacement sensor forward direction installation, a magnetostrictive displacement sensor are reversely installed.
Forward direction installation is that the displacement measurement signal of sensor output increases with the increase of displacement.
Reversed installation is that the displacement measurement signal of sensor output reduces with the increase of displacement.
In utility model device, when governor master connects in a certain position, by two-way magnetostrictive displacement sensor
Measurement output signal, the different core wires being all made of in same root cable are delivered to the Analog input mModule of controller.
In utility model device, the collected two-way magnetostrictive displacement sensor displacement signal of PLC controller is made
The numerical value processing being averaged.Since two magnetostrictive displacement sensors are reversely installed each other, actually acquired to measuring
Signal carries out difference processing.
Electromagnetism interference displacement is accurately measured acquisition method and is applied to speed governing by one embodiment of utility model device
Device master connects displacement measurement.
The utility model is described further with exemplary embodiment below with reference to accompanying drawings.
Fig. 1 is two identical magnetostrictive displacement sensor scheme of installation in the utility model exemplary embodiment.
As shown in Figure 1, the utility model uses two identical magnetostrictive displacement sensors：First magnetostrictive displacement sensor 1,
Second magnetostrictive displacement sensor 2, the first magnetostrictive displacement sensor 1, the second magnetostrictive displacement sensor 2 are fixed on
In mounting seat, the positive installation of the first magnetostrictive displacement sensor 1, the second reversely installation of magnetostrictive displacement sensor 2, when
When governor master connects displacement and is in B location, when the first magnetostrictive displacement sensor 1 exports 4mA, the second magnetostrictive displacement passes
Sensor 2 exports 20mA；When governor master connects displacement and is in location A, when the first magnetostrictive displacement sensor 1 exports 20mA, the
Two magnetostrictive displacement sensors 2 export 4mA.
Fig. 2 is that the deformation of servomotor displacement sensor side stand influences schematic diagram to measurement result in the utility model.Such as Fig. 2
It is shown, when governor master, which connects displacement, is in location of C in magnetostrictive displacement sensor range ability, the first magnetostrictive displacement
Sensor 1, the second magnetostrictive displacement sensor 2 measurement output signal be respectively C1 and C2.Due to servomotor displacement sensing
Device side stand 4 deforms, and leads to the output signal of the first magnetostrictive displacement sensor 1 big △ X of corresponding Displacement Ratio actual displacement,
It is that just, the output signal of sensor full scale 20mA subtracts the second magnetostrictive displacement sensor 2 is corresponding with arrow direction in Fig. 2
Displacement Ratio actual displacement small △ X, △ X are offset deviation caused by the deformation of governor servomotor side stand.
Fig. 3 is the schematic diagram of two magnetostrictive displacement sensor output signal transmission channels in the utility model.Such as Fig. 3
The shown measurement output signal by the first magnetostrictive displacement sensor 1, the second magnetostrictive displacement sensor 2 is all made of same
The not same core of a piece cable is delivered to the Analog input mModule of PLC controller, and Measurement channel is respectively：Channel 1#, channel 2#,
This ensure that the external electromagnetic environment of two paths of signals is the same, the electromagnetic interference signal that signal transmission is subject to is consistent, is △ I.
PLC controller collects the first magnetostrictive displacement sensor 1 by Analog input mModule, the second magnetostrictive displacement senses
The measurement output signal of device 2 is respectively C1+ △ I and C2+ △ I.
In the utility model exemplary embodiment, PLC controller collects the displacement of the first magnetostrictive displacement sensor 1
Signal is k*（C1+△I-4mA）- △ X, the displacement signal for collecting the second magnetostrictive displacement sensor 2 are k* [20mA-（C2
+△I）]+△ X, wherein k is the conversion no-load voltage ratio of the displacement and current signal of magnetostrictive displacement sensor.Using two paths of signals
The numerical value processing mode being averaged, it is { k* that PLC controller, which collects displacement signal,（C1+△I-4mA）-△X+ k*[20mA-
（C2+△I）]+△ X/2, i.e. k*（16mA+C1-C2）/2.
In the utility model exemplary embodiment, PLC controller collects dry without electromagnetism in the final expression formula of displacement signal
Disturb signal △ I and side stand deforming position transposition △ X, it can be seen that, using the device of the utility model, it can obviously eliminate tune
Fast device master connects the influence of electromagnetic interference signal in displacement signal transmission process, avoids measuring collected displacement signal distortion and jump
Become, ensures that governor master connects the accurate measurement acquisition of displacement signal.
Claims (3)
1. a kind of governor master of electromagnetism interference connects displacement and accurately measures harvester, it is characterised in that：It is identical including two
Magnetostrictive displacement sensor, the installation of magnetostrictive displacement sensor forward direction, another magnetostrictive displacement sensor
Reversed installation；Two identical magnetostrictive displacement sensors connect the mould of controller by the different core wires in same root cable
Analog quantity input module；Controller is used to collected two-way magnetostrictive displacement sensor displacement signal making the number being averaged
Value processing.
2. a kind of governor master of electromagnetism interference connects displacement and accurately measures harvester, feature according to claim 1
It is：First magnetostrictive displacement sensor（1）, the second magnetostrictive displacement sensor（2）Pass through the first sliding block, second respectively
Sliding block is mounted on servomotor displacement sensor side stand（4）On, the first magnetostrictive displacement sensor（1）Forward direction installation, second
Magnetostrictive displacement sensor（2）Reversed installation, first magnetostrictive displacement sensor（1）, the second magnetostrictive displacement
Sensor（2）By signal-transmitting cable connect PLC controller Analog input mModule, Measurement channel be respectively channel 1#,
Channel 2#.
3. a kind of governor master of electromagnetism interference connects displacement and accurately measures harvester, feature according to claim 2
It is：The servomotor displacement sensor side stand（4）Connect servomotor displacement arm（3）, servomotor displacement arm（3）Bottom is located at
Servomotor pressure chamber（5）It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820361924.8U CN207894364U (en) | 2018-03-16 | 2018-03-16 | A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820361924.8U CN207894364U (en) | 2018-03-16 | 2018-03-16 | A kind of governor master of electromagnetism interference connects displacement and accurately measures harvester |
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| Publication Number | Publication Date |
|---|---|
| CN207894364U true CN207894364U (en) | 2018-09-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113110280A (en) * | 2021-04-20 | 2021-07-13 | 中国长江电力股份有限公司 | PLC analog quantity acquisition module for remote anti-electromagnetic interference transmission of analog quantity signal |
| CN113225140A (en) * | 2021-04-20 | 2021-08-06 | 中国长江电力股份有限公司 | Analog quantity twin signal receiver for remote anti-electromagnetic interference transmission of analog quantity signal |
| CN114941716A (en) * | 2022-05-16 | 2022-08-26 | 中海石油(中国)有限公司 | Regulating valve prying body with flow metering function and regulating method thereof |
-
2018
- 2018-03-16 CN CN201820361924.8U patent/CN207894364U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113110280A (en) * | 2021-04-20 | 2021-07-13 | 中国长江电力股份有限公司 | PLC analog quantity acquisition module for remote anti-electromagnetic interference transmission of analog quantity signal |
| CN113225140A (en) * | 2021-04-20 | 2021-08-06 | 中国长江电力股份有限公司 | Analog quantity twin signal receiver for remote anti-electromagnetic interference transmission of analog quantity signal |
| CN113110280B (en) * | 2021-04-20 | 2023-01-13 | 中国长江电力股份有限公司 | PLC analog quantity acquisition module for remote anti-electromagnetic interference transmission of analog quantity |
| CN114941716A (en) * | 2022-05-16 | 2022-08-26 | 中海石油(中国)有限公司 | Regulating valve prying body with flow metering function and regulating method thereof |
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