CN107543485A - Portable type full-automatic eddy current displacement sensor automatic calibration device - Google Patents
Portable type full-automatic eddy current displacement sensor automatic calibration device Download PDFInfo
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- CN107543485A CN107543485A CN201710291782.2A CN201710291782A CN107543485A CN 107543485 A CN107543485 A CN 107543485A CN 201710291782 A CN201710291782 A CN 201710291782A CN 107543485 A CN107543485 A CN 107543485A
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- 238000012360 testing method Methods 0.000 description 3
- 238000013500 data storage Methods 0.000 description 2
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- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The invention discloses a kind of Portable type full-automatic eddy current displacement sensor automatic calibration device, mounting base is provided with casing, signal pickup assembly, transmission device assembly, 24V power supplys and encoder are mounted with mounting base；Electronic component, guide rail, electric machine controller are installed in installation panel；Guide rail is fixed in installation panel, and mobile support is arranged on guide rail and forms sliding pair；Mobile support is fixed on the mobile platform of transmission device assembly；Transmission device assembly drives mobile support horizontal rectilinear motion on guide rail.Portable type full-automatic eddy current displacement sensor automatic calibration device provided by the invention, realize the Fast Calibration of eddy current displacement sensor, the linearity of sensor is can show that simultaneously, and can feed back the slope K value and intercept b values of eddy current displacement sensor the very first time.The device improves staking-out work efficiency, and compact-sized small volume is easy to carry.
Description
Technical field
The invention discloses a kind of Portable type full-automatic eddy current displacement sensor automatic calibration device.
Background technology
Eddy current displacement sensor is a kind of contactless closely displacement transducer.With the hair of Engineering Testing Technique
Exhibition, eddy current displacement sensor (eddy current displacement sensor) is in the on-line monitoring and fault diagnosis of large rotating machinery state
It is used widely.Positively related linear pass is presented in the fed-back output voltage of the eddy current displacement sensor of standard and tested distance
System.The general magnitude of voltage using measurement eddy current displacement sensor output end in engineering, to converse tested distance.In electric whirlpool
Displacement transducer is flowed before use, must be demarcated, and determines coefficient (slope K and the intercept b) of sensor.Therefore, accurate mark
The coefficient of sensor is made, it is particularly important.
Current stage, on the market traditional eddy current displacement sensor marking apparatus only possess basis displacement regulatory function,
During demarcation, manually adjust micrometer and be moved to known distance position, while measurement sensor output end signal voltage, by this
Group data carry out manual record.Then this operation is repeated, by measuring the output voltage of multiple known location points, is finally determined
The coefficient of sensor.
Traditional eddy current displacement sensor marking apparatus has the following disadvantages：
1st, need that tested distance is adjusted by manually rotating screw micrometer, it is low to demarcate efficiency；
2nd, do not possess data storage function, often adjust primary measured distance, it is necessary to distance that manual record is adjusted and
The output voltage of sensor；
3rd, do not possess sensor function of supplying power, need the another power supply for preparing sensor during demarcation；(current vortex displacement passes
The general power supply mode of sensor is -24V DC)
4th, the coefficient of sensor can not be calculated automatically, generally require and demarcation record is input manually into Excel, utilize
Excel chart function, draws out the linearity of sensor, and calculates the coefficient of sensor.
With the gradual quickening of current industrial production rhythm, the weak point of traditional eddy current displacement sensor marking apparatus
Increasingly highlight.To improve the demarcation efficiency of spot sensor, further meet the requirement in Practical Project, JP is sent newly
The eddy current displacement sensor caliberating device of type.
The content of the invention
It is an object of the invention to provide a kind of full automatic eddy current displacement sensor caliberating device.It possesses following wound
New advantage：
1st, the full-automation of transducer calibration, operating in a key are realized by mechanical structure.Without adjusting manually during demarcation
Its tested distance is saved, demarcates efficiency high；
2nd, possess data storage function, can automatically record and store nominal data, then without manually recording；
3rd, possesses sensor power supply, without being separately equipped with sensor power supply again during demarcation；
4th, possess the automatic computing function of sensor coefficient, the coefficient of sensor can directly be calculated and displayed, and can be directly perceived
Ground shows the linear degree of sensor.
5th, it the compact design of integrated form, can be convenient for carrying, advantageously be used in field calibration.
In order to achieve the above object, the technical solution adopted by the present invention is：
Portable type full-automatic eddy current displacement sensor automatic calibration device, including casing, casing have lid, set on casing
Mounting base is equipped with, installation panel is provided with mounting base；Be mounted with described mounting base signal pickup assembly,
Transmission device assembly, 24V power supplys and encoder；Transmission device assembly, including stepper motor, reductor, the shaft coupling being sequentially connected
Device, ball-screw, mobile platform are arranged on ball-screw, and mobile platform also forms sliding pair with line slideway；
Stepper motor is connected with electric machine controller and encoder, and signal pickup assembly is connected with mobile support, 24V power supplys point
Be not stepper motor, encoder, signal pickup assembly power supply is provided；
Electronic component, guide rail, electric machine controller are installed in described installation panel；Described guide rail is fixed on mounting surface
On plate, mobile support is arranged on guide rail and forms sliding pair；Mobile support is fixed on the mobile platform of transmission device assembly；Transmission
Assembly of devices drives mobile support horizontal rectilinear motion on guide rail.
Electronic component includes RS232 interface, button switch, 220V power outlets, cable interface socket, binding post；
Described RS232 interface is connected with electric machine controller, and described 220V power outlets, button switch are connected with 24V power supplys successively,
Described binding post connection 24V power supplys, described cable interface socket are connected with signal pickup assembly.
The Portable type full-automatic eddy current displacement sensor automatic calibration device, mainly transported by power-supply system, machine automatization
Row system and signal acquiring system three parts composition.
Power-supply system：Power-supply system is made up of 220V power supplies line and+24V D.C. regulated power supplies, is follow-up work system
System and the power supply of tested sensor.
Machine automatization runtime：Machine automatization runtime is driven by two-phase stepper motor, electric machine controller, motor
Device, motor encoder, reductor, shaft coupling, ball screw assembly, and fixed rack composition, major function are to make tested object of reference
It can be automatically moved according to the logical program of setting.
Signal acquiring system：Signal acquiring system by signal pickup assembly and processor group into.
Technical scheme is specially：
1st, the automatic displacement for realizing calibrated reference using stepper motor changes.Pass through controllor for step-by-step motor and driver
The movement logic programming of stepper motor is carried out, to realize that the logically automatic running of motor controls.
2nd, it is scaled according to the fixed output rotating speed progress for becoming comparison stepper motor using planetary reducer, to take
Obtain less output speed.
3rd, the output shaft of planetary reducer is connected on ball screw assembly, by shaft coupling, passes through ball-screw adjutant's motor
Convert rotational motion into ball-screw nut linear motion.Ball-screw is assemblied in line slideway, and feed screw nut drives
Line slideway platform moves.Installation probe calibrated reference on line slideway platform.
4th, the feedback voltage signal of the pulse output signals of signal pickup assembly collection motor encoder and sensor, it is whole
Individual system is linear system, therefore the moving displacement of object of reference can be calculated by the pulse signal that motor encoder exports.
The information that final computer is collected signal pickup assembly carries out finishing analysis, draws out feedback signal and the demarcation of sensor
The curved line relation of displacement, the calibration coefficient of sensor can be calculated by this curved line relation.
The operation principle of the Portable type full-automatic eddy current displacement sensor automatic calibration device is as follows：
Eddy current probe is a kind of sensor of contactless close-in measurement displacement in itself, and its range ability is smaller, typically
No more than 10mm.Therefore such a sensor is demarcated, it is necessary to accurately known micro-displacement need to be provided.In order to obtain accurate and understand
Micro-displacement, the present apparatus takes transmission and the acquisition mode of a kind of electric-mechanic control system, to realize the Accurate Calibration of sensor.
Pass through the stepper motor -- linear mechanical system of planetary reducer -- ball screw assembly, -- line slideway, by stepping electricity
The rotary motion of machine is converted into the linear motion of guide rail according to known no-load voltage ratio.Wherein, the speed reducing ratio of planetary reducer is 1：8,
The helical pitch of ball-screw is 1mm.Therefore stepper motor often rotates 1 turn, and 0.125mm is moved equivalent to line slideway.Meanwhile motor
1 turn is often rotated, the encoder of stepper motor will export 3200 pulses.This pulse signal is received by signal pickup assembly, obtained
To following linear ratio relation：Motor rotates 1 turn-encoder and sends 3200 pulses-line slideway motion 0.125mm.
According to aforementioned proportion relation, 32 pulse signals represent line slideway motion 0.00125mm.By above-mentioned conversion,
Step-wise displacement signal is uniformly compactly converted into pulse signal.Signal pickup assembly can be calculated by acquisition pulse signal
Go out the displacement of line slideway.
Portable type full-automatic eddy current displacement sensor automatic calibration device provided by the invention, realize that current vortex displacement passes
The Fast Calibration of sensor, while the linearity of sensor is can show that, and can feed back current vortex displacement sensing the very first time
The slope K value and intercept b values of device.The device can effectively reduce the demarcation man-hour of eddy current displacement sensor, greatly improve mark
Determine operating efficiency.The caliberating device compact overall structure small volume, it is easy to carry, using quick, it is highly suitable for portable existing
Field carries out batch demarcation.
Brief description of the drawings
Fig. 1 is the installation panel structural representation of the present invention；
Fig. 2 is the transmission device assembly structure schematic diagram of the present invention；
Fig. 3 is the mounting base structural representation of the present invention；
Fig. 4 is the mobile support and transmission device assembly connection diagram of the present invention；
Fig. 5 is the electrical block diagram of the present invention；
Connection diagram when Fig. 6 is the test of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the present invention will be described in detail.
The annexation of all parts of device is described for clearly clear, the assembly connection relation of the device is divided into
3 regions illustrate respectively.3 assembly areas of the present apparatus are respectively：External box of microvave region, mounting base region, installation panel area
Domain.
External box of microvave region：
Critical piece is casing 1, and directly form assembly relation therewith is mounting base 2 and installation panel 5.Mounting base
2 utilizations are bolted to the interior bottom portion of casing 1.Installation panel 5 utilizes and is bolted to the cavity top of casing 1.
As shown in figure 3, mounting base region：
It is mounted with mounting base 2 with lower component：Signal pickup assembly 3, transmission device assembly 4,24V power supplys 10
With encoder 11.As shown in Fig. 2 transmission device assembly 4 includes：Shaft coupling 4.1, stepper motor 4.2, reductor 4.3, ball wire
The line slideway 4.6 of 4.4 mobile platform of thick stick 4.5.Wherein signal pickup assembly 3,24V power supplys 10 and encoder 11 are bolted
On mounting base 2, with brill when screwed hole assembles.Transmission device assembly 4 is fixed on mounting base 2 by regulating bolt.Letter
Number harvester 3, transmission device assembly 4,24V power supplys 10 and encoder 11 and regulation stud are not present assembling and closed from each other
System, but have wire connection between electronic component, as shown in figure 5, stepper motor 4.2 is connected with encoder 11, the He of electric machine controller 9
Encoder 11 is connected, and signal pickup assembly 3 is connected with mobile support 8, and 24V power supplys 10 are respectively stepper motor 4.2, encoder 11
Power supply is provided；
As shown in figure 1, installation panel region：
It is mounted with installation panel 5 with lower component：Electronic component 6, guide rail 7, electric machine controller 9.Electronics member
Device 6 includes：RS232 interface 6.1, button switch 6.2,220V power outlets 6.3, cable interface socket 6.4, binding post
6.5.As shown in figure 5, electronic component 6 connects including RS232 interface 6.1, button switch 6.2,220V power outlets 6.3, netting twine
Mouth socket 6.4, binding post 6.5；Described RS232 interface 6.1 is connected with electric machine controller 9, described 220V power outlets
6.3rd, button switch 6.2 is connected with 24V power supplys 10 successively, described binding post 6.5 connection 24V power supplys 10, described netting twine
Interface socket 6.4 is connected with signal pickup assembly 3.
The mounting hole of good above-mentioned part is reserved when installation panel 5 is processed, the hole position of above-mentioned part insertion relevant position is complete
Into assembling.Its middle guide 7 is bolted in installation panel 5.Space holding movable between guide rail 7 and installation panel 5
Support 8.Therefore, guide rail 7 and installation panel 5 are to rigidly fix relation, and moving support 8 can form in guide rail 7 and installation panel 5
Space in relatively move.Effect of contraction is played in movement of the guide rail 7 to mobile support 8, it is therefore an objective to which the mobile support 8 of order is constrained on
Guide rail direction moves forward and backward.All parts in installation panel region, it is moveable only to move support 8, and miscellaneous part is complete
All it is fixed in installation panel 5.
After installation panel region and the installation of mounting base region, as shown in figure 4, mobile support 8 is passed through into bolt
It is fixed on 4.5 on the mobile platform in transmission device assembly 4.
After transmission device assembly 4 and the mobile assembly connection of support 8 are completed, installation floor region and installation panel region two
Individual region has then been indirectly connected with by transmission system mobile support 8 being driven horizontal straight into an entirety, transmission device assembly 4
Line moves.The horizontal rectilinear motion of mobile support 8 forms the spy that sensor 100 is calibrated on guide rail 7 relative to being fixed on
First 200 relative displacement, as probe 200 provides the relative displacement of test target, and this displacement is linear and known
Displacement, and then the purpose of the tested sensor of demarcation.
Stepper motor 4.2, reductor 4.3, shaft coupling 4.1, ball-screw 4.4, mobile platform 4.5 are arranged on ball-screw
On 4.4, mobile platform 4.5 also forms sliding pair with line slideway 4.6；
The model TKK6010C-A1-150-F0 of ball-screw 4.4.It is logical between stepper motor 4.2 and reductor 4.3
Bolt is crossed to be fixedly connected；Reductor 4.3 is to be bolted to connection with shaft coupling 4.1；Shaft coupling 4.1 is directly connected to ball
On leading screw 4.4 and line slideway 4.6.
There are mounting base 2, mobile support 8 in the part of assembly relation with transmission device assembly 4.The He of transmission device assembly 4
Mounting base 2 is fixed by M5 regulation studs.Mounting base 2 is the basis that all parts are fixed in casing.
Transmission system operation principle：
The mechanical actuating mechanism transmission system of sensor automatic Calibration platform mainly by shaft coupling 4.1, stepper motor 4.2, subtract
Fast machine 4.3, ball-screw 4.4, mobile platform 4.5, line slideway 4.6, mobile support 8 form.Control to stepper motor 4.2
Completed by electric machine controller 9 and encoder 11.
Stepper motor 4.2 uses two phase mixing stepper motor (stepping angle for 1.8 °, moment of torsion 0.52N.m).Stepper motor
The torque of 4.2 output shafts output is decreased to suitable rotating speed by reductor 4.3 according to a rated transformation ratio.The output of reductor 4.3
Axle is by shaft coupling 4.1, by the stable output of moment of torsion to ball-screw 4.4.After ball screw 4.4 is driven in rotation, it will drive
The mobile platform 4.5 on its top moves horizontally.Mobile support 8 is moved horizontally and moved with mobile platform 4.5.
As shown in fig. 6, the probe 200 for being calibrated sensor 100 is integrally fixed on guide rail 7, sensor 100 is calibrated
Probe 200 is motionless, and the motion of mobile support 8 provides the change in displacement of object of reference for probe 200.By stepper motor 4.2
Revolution is converted into known calibrated reference displacement in strict accordance with linear scale, and then realizes the mark to being calibrated sensor 100
Fixed work.The device compact overall structure, and can be patrolled by the motion of PMC100B control unit programming realization automatic Calibrations
Collect control.
Device is using operating process：
Operating process using the device normalization sensor is as follows：
1st, 220V power outlets 6.3 are first passed through to power for cabinet；
2nd, sensor 100 will be calibrated in installation panel 5, operation is as follows：The signal of sensor 100 will be calibrated
In line access binding post 6.5.The probe 200 for being calibrated sensor 100 is fixed on guide rail 7 by two nuts again, led
Rail 7 has reserved the hole being transmitted through for sensor；
3rd, by netting twine connected with network cable interface socket 6.4 and work computer, and acquisition software is opened；
4th, button switch 6.2 is opened, is electricity on package unit；
5th, the button that brings into operation in electric machine controller 9 is clicked on；
6th, after bringing into operation, device is straight by the relative probe 200 for being calibrated sensor 100 by automatic running, mobile support 8
Line moves；
7th, the relative displacement of the feedback signal for being calibrated sensor 100 and mobile support 8 is collected by computer can,
The coefficient of sensor is calculated by both sides relation；
8th, after completing demarcation, sensor 100 will be calibrated and pulled down, close power supply, extract netting twine.
Claims (2)
1. Portable type full-automatic eddy current displacement sensor automatic calibration device, including casing (1), casing (1) have lid, it is special
Sign is, mounting base (2) is provided with casing (1), installation panel (5) is provided with mounting base (2)；Described installation bottom
Signal pickup assembly (3), transmission device assembly (4), 24V power supplys (10) and encoder (11) are mounted with plate (2)；Transmission
Assembly of devices (4), including stepper motor (4.2), reductor (4.3), shaft coupling (4.1), the ball-screw being sequentially connected
(4.4), mobile platform (4.5) is arranged on ball-screw (4.4), and mobile platform (4.5) is also formed with line slideway (4.6) and slided
Dynamic pair；
Stepper motor (4.2) is connected with electric machine controller (9) and encoder (11), signal pickup assembly (3) and mobile support (8)
Connection, 24V power supplys (10) are respectively stepper motor (4.2), encoder (11), signal pickup assembly (3) offer power supply；
Electronic component (6), guide rail (7), electric machine controller (9) are installed in described installation panel (5)；Described guide rail (7)
It is fixed in installation panel (5), mobile support (8) is arranged on guide rail (7) and forms sliding pair；Mobile support (8) is fixed on transmission
On the mobile platform (4.5) of assembly of devices (4)；Transmission device assembly (4) drives mobile support (8) horizontal straight on guide rail (7)
Line moves.
2. Portable type full-automatic eddy current displacement sensor automatic calibration device according to claim 1, it is characterised in that
Electronic component (6) includes RS232 interface (6.1), button switch (6.2), 220V power outlets (6.3), cable interface socket
(6.4), binding post (6.5)；Described RS232 interface (6.1) is connected with electric machine controller (9), and described 220V power supplys are inserted
Seat (6.3), button switch (6.2) are connected with 24V power supplys (10) successively, described binding post (6.5) connection 24V power supplys
(10), described cable interface socket (6.4) is connected with signal pickup assembly (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291782.2A CN107543485A (en) | 2017-04-28 | 2017-04-28 | Portable type full-automatic eddy current displacement sensor automatic calibration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291782.2A CN107543485A (en) | 2017-04-28 | 2017-04-28 | Portable type full-automatic eddy current displacement sensor automatic calibration device |
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| Publication Number | Publication Date |
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| CN107543485A true CN107543485A (en) | 2018-01-05 |
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ID=60966844
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| CN201710291782.2A Pending CN107543485A (en) | 2017-04-28 | 2017-04-28 | Portable type full-automatic eddy current displacement sensor automatic calibration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649772A (en) * | 2020-04-01 | 2020-09-11 | 上海发电设备成套设计研究院有限责任公司 | Data acquisition and signal processing device and method capable of checking multiple sensors |
| CN116678302A (en) * | 2023-07-28 | 2023-09-01 | 三峡高科信息技术有限责任公司 | Micrometer-based calibration method for swing sensor |
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Application publication date: 20180105 |