CN201191202Y - Static/dynamic detector of full-automatic electric eddy current sensor - Google Patents
Static/dynamic detector of full-automatic electric eddy current sensor Download PDFInfo
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- CN201191202Y CN201191202Y CNU2008200574805U CN200820057480U CN201191202Y CN 201191202 Y CN201191202 Y CN 201191202Y CN U2008200574805 U CNU2008200574805 U CN U2008200574805U CN 200820057480 U CN200820057480 U CN 200820057480U CN 201191202 Y CN201191202 Y CN 201191202Y
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- current sensor
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Abstract
A full automatic electric eddy sensor static/dynamic check meter belongings to the measurement technical field comprises a static test unit and a central controller with a touch screen, wherein the static test unit comprises a static calibration test piece disc and a static check probe mounting frame. The full automatic electric eddy sensor static/dynamic check meter is characterized by comprising a linear module group whose guide rail expansion frame is provided with the static calibration test piece disc, wherein the disc surface of the check meter is arranged with the static check probe mounting frame, the guide rail expansion frame and the liner module group are correspondingly provided with a positioning stopper and a non-mechanical touch type positioning switch, the communication interface of the central controller via a step motor driver is connected with a step motor, the non-mechanical touch type positioning switch via a step motor control circuit is connected with the step motor driver, the probe via a signal check sampling circuit is connected with a periphery function expansion interface circuit of the central controller. The full automatic electric eddy sensor static/dynamic check meter realizes automation in the whole test, to improve the accuracy of calibration result, having wide application for the calibrations of different electric eddy sensors.
Description
Technical field
The utility model belongs to field of measuring technique, relates in particular to a kind of calibration equipment that is used for current vortex sensor.
Background technology
The vital role of sensor technology in social development is along with rapid development of science and technology, the test of non-physical quantity and control technology, be applied to technical fields such as space flight, aviation, communications and transportation, metallurgy, machine-building, petrochemical industry, light industry, technical supervision and test more and more widely, and just progressively introduce in the daily life and go.
What current vortex sensor adopted is the induced electricity vortex principle, and when the coil that has high-frequency current during near tested metal, the electromagnetic field of high frequency that high-frequency current produced on the coil just produces induction current on the metal surface, be referred to as current vortex on the electromagnetics.Eddy current effect and tested intermetallic distance and conductivity, magnetic permeability, the geometric configuration of coil, physical dimension, relating to parameters such as power frequency.
Can convert tested metal to voltage or electric current variation with respect to the variable in distance between the sensor probe by circuit.Current vortex sensor is according to displacement, the vibration isoparametric measurement of this principle realization to metal object.
Current vortex sensor is a kind of non-cpntact measurement sensor of superior performance, this sensor is applicable to the vibration to machinery, displacement, the direct on-line monitoring of running statuses such as rotating speed, in the status monitoring of large rotating machinery, be widely adopted, comprising abundant operating states of the units information in its output signal, it links to each other with relevant device, can realize the online detection and the monitoring of parameter, also can be used for fault diagnosis, its volume is little, compact conformation is firm, corrosion-resistant, moisture-proof heat, thereby be widely used in electric power, petrochemical industry, industries such as machinery just are familiar with by numerous engineering technical personnel and are paid attention to.
As a kind of detection sensor, must there be the problem of verification, usually, the verification of current vortex sensor is broadly divided into the verification of dispatching from the factory (also claiming to demarcate) and user's verification, and the verification that the user did is generally periodic check.
This periodic check, normally the user utilizes the prophylactic repair of plant equipment, and current vortex sensor mounted thereto is carried out verification.
Because due to the work characteristics of current vortex sensor, feasible most user (infield that refers to user's plant equipment) at the scene carries out verification to it, it can only be disassembled, deliver to special laboratory, instrument check chamber or sensor production producer inspect verification by ready samples, the censorship verification required time of sensor calibration is long, for some large-scale units or be equipped with for the user of a plurality of current vortex sensors, this be one very time-consuming, effort, the work that takes fund, and can not satisfy the time needs of quick maintenance or breakdown repair, to the safety of main equipment or complicated machinery, stable operation brings hidden danger.
Simultaneously, because eddy current sensor dynamic, the method of calibration of static check, the difference of calibration equipment structure, the most of function singlenesses of existing tester, and the origin correction of existing instrument, moving of static examination dish or probe erecting frame, regulate, the location all adopts manual mode to realize, its measuring accuracy is subjected to the restriction of survey instrument (milscale) and regulative mode (manually and by eye observing), can only reach the millimeter level, and error is bigger, the institute that had both increased verification is time-consuming, strengthened tester's workload, be unfavorable for respectively testing giving full play to of tester function again, the check results precision is lower.
The utility model content
Technical problem to be solved in the utility model provides a kind of full-automatic eddy current sensor quiet/dynamic check instrument, its whole checking procedure is automatically carried out, need not manual intervention, check results precision height, test record output is directly perceived, convenient, can satisfy user's time needs of maintenance or breakdown repair fast fully, for safety, the stable operation of main equipment or complicated machinery provides reliable assurance, also help alleviating tester's workload, improve verification work efficiency and checking precision.
The technical solution of the utility model is: provide a kind of full-automatic eddy current sensor quiet/the dynamic check instrument, comprise static test unit and central control unit, its static test unit comprises static demarcating test specimen dish and static check probe mounting bracket at least, its central control unit has touch screen display unit, it is characterized in that: a linear module driven by stepper motors is set, the packaged type guide rail extensible frame that is driven by it is set on linear module, and correspondence is provided with location link stopper and on-mechanical contact positioning switch on guide rail extensible frame and linear module; Static demarcating test specimen dish is set on the guide rail extensible frame, fixing static check probe mounting bracket is set on the tester card; The communication interface of described central control unit is connected with stepper motor through stepper motor driver; Described on-mechanical contact positioning switch is connected with stepper motor driver through stepping motor control circuit; Described probe is connected with the peripheral function expansion interface circuit of central control unit through the input sample circuit.
Its linear module is parallel with the tester card, is arranged on tester card below.
Be connected for worm Gear-Worm external member coupling between the driving shaft of its guide rail extensible frame and linear module.
Its on-mechanical contact positioning switch is optoelectronic switch positioning component, standard electric eddy current sensor positioning component or grating chi positioning component.
Its static check probe mounting bracket is fixedly installed on the direction with linear module parallel axes, and its central axis overlaps with the central point of static demarcating test specimen dish.
Its central control unit is the flush bonding processor micro-computer circuit.
The communication interface of its control module is the RS232C communication interface.
Its touch-screen is connected with embedded micro computer unit bus through relative interface circuit.
Its control module is integrated with data communication interface RS232C, USB or the Ethernet port that can carry out exchanges data with host computer.
Its peripheral function expansion interface circuit comprises step motor control, data acquisition/conversion and A102 expansion board side interface logical circuit at least.
Compared with the prior art, the utility model has the advantages that:
1. the actuator unit of linear module formation driven by stepper motors and the original point position unit that is made of on-mechanical contact positioning switch are set, make the original point position robotization, need not manual intervention, test record output is directly perceived, convenient, can satisfy user's needs fully;
2. the moving-member in the static check (static demarcating test specimen dish) is arranged on the packaged type guide rail extensible frame on the linear module, make on the one hand the user can finish static check in the equipment erecting stage to current vortex sensor, on the other hand, combine with actuator unit and original point position unit, realized the full-automation of whole test process, the check results precision improves greatly;
3. its control module is integrated with the several data communication interface, made things convenient for the external data exchange and/or and host computer between data transmission, improved user's data collection and collection work efficient.
Description of drawings
Fig. 1 to Fig. 2 is a physical construction synoptic diagram of the present utility model;
Fig. 3 is the utility model electrical module block scheme;
Fig. 4 is the electrical module block scheme of its peripheral function expansion interface circuit.
1 is static demarcating test specimen dish among the figure, and 2 are static check probe mounting bracket, and 6 is linear module, and 6-1 is a stepper motor, and 6-2 is a packaged type guide rail extensible frame, and 7-1 is the location link stopper, and 7-2 is an on-mechanical contact positioning switch, and 8 for to be popped one's head in by the school.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Among Fig. 1 to Fig. 2, physical construction of the present utility model comprises the static test unit that is made of static demarcating test specimen dish 1 and static check probe mounting bracket 2 at least, its inventive point is to be provided with a linear module 6 that is driven by stepper motor 6-1, be provided with a packaged type guide rail extensible frame 6-2 who is driven by it on linear module, correspondence is provided with location link stopper 7-1 and on-mechanical contact positioning switch 7-2 on guide rail extensible frame and linear module; Static demarcating test specimen dish is set on the guide rail extensible frame, fixing static check probe mounting bracket 1 is set on tester card (not shown).
Further, its linear module is parallel with the tester card, is arranged on tester card below.
Be connected for worm Gear-Worm external member coupling between the driving shaft of its guide rail extensible frame and linear module.
Its on-mechanical contact positioning switch is optoelectronic switch positioning component, standard electric eddy current sensor positioning component or grating chi positioning component.
Its static check probe mounting bracket is fixedly installed on the direction with linear module parallel axes, and its central axis overlaps with the central point of static demarcating test specimen dish.
Because adopting optoelectronic switch positioning component, standard electric eddy current sensor positioning component or grating chi positioning component to carry out pinpoint technical scheme is prior art, its concrete structure and working method are no longer narrated at this.
Owing to be provided with actuator unit and original point position unit, moving-member in the static check (static demarcating test specimen dish) is arranged on packaged type guide rail extensible frame on the linear module, adopt on-mechanical contact positioning switch as locating device, realized that the robotization of high-precision original point position and original point position carries out, and then realized the full-automation of whole test process, need not manual intervention, the check results precision improves the workload that also helps alleviating the tester greatly, has improved verification work efficiency and checking precision.
Through actual test, adopted the tester of technique scheme, its minimum check bit length of moving one's steps can reach 0.1 μ m, and precision also can reach 0.1 μ m, and than the millimetre-sized measurement result of prior art, its measuring accuracy has had the raising of " matter " on the order of magnitude.
Among Fig. 3, technical in the available circuit modular structure, the communication interface of the central control unit of the electric part of this device is connected with stepper motor through stepper motor driver, and communication interface is connected with main drive motor through main motor driver simultaneously.Its on-mechanical contact positioning switch is connected with stepper motor driver through stepping motor control circuit.Its probe is connected with the peripheral function expansion interface circuit of central control unit through the input sample circuit.
Its central control unit is the flush bonding processor micro-computer circuit.
The communication interface of its control module is the RS232C communication interface.
Its touch-screen is connected with embedded micro computer unit bus through relative interface circuit.
Its control module is integrated with data communication interface RS232C, USB or the Ethernet port (representing with " data communication interface 1 " to " data communication interface N " among the figure) that can carry out exchanges data with host computer.
Because above-mentioned each functional circuit and its connected mode each other are prior art, its concrete circuit and principle of work are no longer narrated at this, those skilled in the art is after understanding and having grasped intention of the present utility model and inventive point, need not through performing creative labour, can easily reproduce technique scheme, realize its technique effect.
Owing to adopt on-mechanical contact positioning switch as locating device, and control module integrated the several data communication interface, make the original point position robotization carry out, measuring accuracy improves greatly, realized the full-automation of whole test process, test record output is directly perceived, readability, made things convenient for the external data exchange and/or and host computer between data transmission, the work efficiency that has improved the user data collection and gathered.
Among Fig. 4, provide the electrical module block scheme of this device peripheral function expansion interface circuit embodiment, its peripheral function expansion interface circuit comprises step motor control, data acquisition/conversion and A102 expansion board side interface logical circuit at least.
As seen from the figure, the main devices of function expander board selects for use CPLD to realize step motor control pulse producer, frequency detecting logic, A/D conversion and control and automaticdata sampling time sequence logic and A102 expansion board side interface logic, 16 A/D converters of data sampling main devices, guarantee like this, to greatest extent sampling precision, sample rate and and master control system between exchanges data speed.
Because of above-mentioned functions of modules circuit is prior art, those skilled in the art is after understanding and having grasped intention of the present utility model and inventive point, fully can be without performing creative labour, reproduce the technical solution of the utility model, realize its technique effect, so the concrete circuit of above-mentioned module and annexation are each other no longer narrated at this.
Flush bonding processor micro-computer circuit and expansion board are designed to independently two circuit boards, connect by A102 function expansion slot between the two, can guarantee not influence the data rate and the coupling reliability of circuit like this, and modular design helps the installation of circuit, debugging and maintenance.
The static test workflow of this device comprises the steps: at least
A, on static check probe mounting bracket, install and pop one's head in, and connect corresponding signal connecting line by the school;
B, manual adjustment are made its probe end face fully contact with static demarcating test specimen panel surface by the school probe;
C, set consecutive point displacement interval and number of scan points by touch-screen;
D, startup AUTOMATIC STATIC checking routine;
E, central control unit are through the entry into service of stepper motor driver control step motor;
F, step motor drive are equipped with the static check probe mounting bracket of sensor, and the direction that increases to pop one's head in end face and static demarcating test specimen dish gap moves;
Voltage output signal value and position that G, central control unit detect and write down according to by the variation of school probe output valve, judge whether it enters the linear work zone;
H, if the output valve of being popped one's head in by the school enters the linear work zone, enter next step, otherwise, repeat above-mentioned F, G step;
The linear initial gap that I, record are popped one's head in by the school and at the linear gap magnitude of voltage of linear work starting point;
J, basis be the consecutive point spacing and the number of scan points of input in advance, the single step run step-length of calculated step motor;
K, central control unit are according to the step-length of setting, and the control step motor remains in operation, and drive static check probe mounting bracket and move to next displacement point to the direction of probe end face and the increase of static demarcating test specimen dish gap;
L, record are by the linear gap magnitude of voltage of school probe at this displacement point;
M, central control unit write down, store the gap voltage value of each point automatically;
N, central control unit are horizontal ordinate with the displacement on display screen, the gap voltage value is an ordinate, real-time rendering, show static linear response and/or the sensitivity error curve treat the school probe, simultaneously adding up with completed number of scan points and/or the test shift length finished;
O, if number of scan points sum and/or always test shift length reaches default definite value, enter next step, otherwise, repeat above-mentioned K, L, M, N step;
P, central control unit calculate the linear starting potential of probe, linear initial gap, sensitivity, sensitivity error, nonlinearity erron automatically, and the output format form.
In order to satisfy user's test needs better, after above-mentioned M finishes step by step suddenly, can also continue to treat the test that the probing head carries out the non-linear domain static characteristic curve, more fully and all sidedly the performance of test probe by the program setting.
During actual test, install probe to be tested, and on request after the wiring, will fully be contacted with static demarcating test specimen dish end face by the school end face of popping one's head in by the outstanding button of manual adjustment, at this moment, probe should rotate to horizontal level.
After setting consecutive point spacing and number of scan points by touch-screen, start the AUTOMATIC STATIC verification, afterwards, tester will be equipped with sensor automatically according to the step-length control step motor-driven of setting probe erecting frame moves to probe end face and static demarcating test specimen dish gap increase direction, and scan each point gap voltage value and record successively, on display screen, be horizontal ordinate simultaneously with the displacement, the gap voltage value is an ordinate real-time rendering static demarcating curve, whole checking procedure does not need manual intervention, tester calculates linear starting potential automatically after the been scanned, linear initial gap, sensitivity, sensitivity error, nonlinearity erron etc., and output format form.
By above-mentioned working routine, can obtain the static linear response or the correlation parameter of probe to be measured convenient, fast, accurately and efficiently.
Above said content only is used for explaining and illustrating the technical scheme of the utility model, rather than with the qualification of doing the invention scope of the utility model claim, those of ordinary skill in the art, can under the situation that does not deviate from thinking of the present invention and scope, make various variations that are equal to or distortion fully to the utility model.
Those of ordinary skill in the art will be appreciated that, as long as in connotation scope of the present utility model, to variation or the distortion of above each embodiment, all will drop in the application's the desired protection domain of claim.
To sum up, because the utility model is provided with actuator unit and original point position unit, moving-member in the static check (static demarcating test specimen dish) is arranged on packaged type guide rail extensible frame on the linear module, adopt on-mechanical contact positioning switch as locating device, and control module integrated the several data communication interface, make the user can finish static check in the equipment erecting stage to current vortex sensor, the original point position robotization is carried out, realized the full-automation of whole test process, need not manual intervention, the check results precision improves greatly, test record output is directly perceived, readability, made things convenient for the external data exchange and/or and host computer between data transmission, the work efficiency that has improved the user data collection and gathered, can satisfy the time needs of quick maintenance of user or breakdown repair fully, also help alleviating tester's workload, improve verification work efficiency and checking precision.
The utility model can be widely used in the verification field of all size model current vortex sensor.
Claims (6)
- A full-automatic eddy current sensor quiet/the dynamic check instrument, comprise static test unit and central control unit, its static test unit comprises static demarcating test specimen dish and static check probe mounting bracket at least, and its central control unit has touch screen display unit, it is characterized in that:One linear module driven by stepper motors is set, the packaged type guide rail extensible frame that is driven by it is set on linear module, correspondence is provided with location link stopper and on-mechanical contact positioning switch on guide rail extensible frame and linear module;Static demarcating test specimen dish is set on the guide rail extensible frame, fixing static check probe mounting bracket is set on the tester card;The communication interface of described central control unit is connected with stepper motor through stepper motor driver;Described on-mechanical contact positioning switch is connected with stepper motor driver through stepping motor control circuit;Described probe is connected with the peripheral function expansion interface circuit of central control unit through the input sample circuit.
- According to the described full-automatic eddy current sensor of claim 1 quiet/the dynamic check instrument, it is characterized in that described linear module is parallel with the tester card, be arranged on tester card below; Be connected for worm gear-endless screw external member coupling between the driving shaft of described guide rail extensible frame and linear module.
- According to the described full-automatic eddy current sensor of claim 1 quiet/the dynamic check instrument, it is characterized in that described on-mechanical contact positioning switch is optoelectronic switch positioning component, standard electric eddy current sensor positioning component or grating chi positioning component.
- According to the described full-automatic eddy current sensor of claim 1 quiet/the dynamic check instrument, it is characterized in that described static check probe mounting bracket is fixedly installed on the direction with linear module parallel axes, its central axis overlaps with the central point of static demarcating test specimen dish.
- According to the described full-automatic eddy current sensor of claim 1 quiet/the dynamic check instrument, it is characterized in that described central control unit is the flush bonding processor micro-computer circuit; The communication interface of described control module is the RS232C communication interface; Described touch-screen is connected with embedded micro computer unit bus through relative interface circuit; Described control module is integrated with data communication interface RS232C, USB or the Ethernet port that can carry out exchanges data with host computer.
- According to the described full-automatic eddy current sensor of claim 1 quiet/the dynamic check instrument, it is characterized in that described peripheral function expansion interface circuit comprises step motor control, data acquisition/conversion and A102 expansion board side interface logical circuit at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200574805U CN201191202Y (en) | 2008-04-18 | 2008-04-18 | Static/dynamic detector of full-automatic electric eddy current sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200574805U CN201191202Y (en) | 2008-04-18 | 2008-04-18 | Static/dynamic detector of full-automatic electric eddy current sensor |
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| CN201191202Y true CN201191202Y (en) | 2009-02-04 |
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| CNU2008200574805U Expired - Fee Related CN201191202Y (en) | 2008-04-18 | 2008-04-18 | Static/dynamic detector of full-automatic electric eddy current sensor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221379A (en) * | 2010-04-16 | 2011-10-19 | 上海森太克汽车电子有限公司 | Detection equipment and method for distance measure sensor |
| CN103411744A (en) * | 2013-07-26 | 2013-11-27 | 浙江大学 | Electric eddy transducer dynamic calibration device |
| CN103791806A (en) * | 2014-02-25 | 2014-05-14 | 福建宁德核电有限公司 | Rapid adjustment and installation mechanism for eddy current displacement sensor |
| CN104697480A (en) * | 2013-12-10 | 2015-06-10 | 中国航空工业第六一八研究所 | Automatic testing method of sensors in different zero positions |
| CN107543485A (en) * | 2017-04-28 | 2018-01-05 | 中国水利水电科学研究院 | Portable type full-automatic eddy current displacement sensor automatic calibration device |
| CN110057392A (en) * | 2019-05-31 | 2019-07-26 | 中国航发湖南动力机械研究所 | Calibration system for current vortex sensor |
| CN110118525A (en) * | 2019-04-24 | 2019-08-13 | 武汉理工大学 | Multiple spot matrix form current vortex sensor detects metal flat degree detection method |
| CN112432697A (en) * | 2020-10-22 | 2021-03-02 | 沈阳鼓风机集团安装检修配件有限公司 | Vibration measurement probe field fault diagnosis method |
| CN113074767A (en) * | 2021-03-30 | 2021-07-06 | 宁夏计量质量检验检测研究院 | Eddy current sensor dynamic and static integrated calibrating device |
-
2008
- 2008-04-18 CN CNU2008200574805U patent/CN201191202Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221379A (en) * | 2010-04-16 | 2011-10-19 | 上海森太克汽车电子有限公司 | Detection equipment and method for distance measure sensor |
| CN103411744A (en) * | 2013-07-26 | 2013-11-27 | 浙江大学 | Electric eddy transducer dynamic calibration device |
| CN103411744B (en) * | 2013-07-26 | 2016-01-13 | 浙江大学 | Electric eddy transducer dynamic calibration device |
| CN104697480A (en) * | 2013-12-10 | 2015-06-10 | 中国航空工业第六一八研究所 | Automatic testing method of sensors in different zero positions |
| CN104697480B (en) * | 2013-12-10 | 2018-03-02 | 中国航空工业第六一八研究所 | A kind of automatic test approach of multiple sensors of different null positions |
| CN103791806A (en) * | 2014-02-25 | 2014-05-14 | 福建宁德核电有限公司 | Rapid adjustment and installation mechanism for eddy current displacement sensor |
| CN107543485A (en) * | 2017-04-28 | 2018-01-05 | 中国水利水电科学研究院 | Portable type full-automatic eddy current displacement sensor automatic calibration device |
| CN110118525A (en) * | 2019-04-24 | 2019-08-13 | 武汉理工大学 | Multiple spot matrix form current vortex sensor detects metal flat degree detection method |
| CN110057392A (en) * | 2019-05-31 | 2019-07-26 | 中国航发湖南动力机械研究所 | Calibration system for current vortex sensor |
| CN112432697A (en) * | 2020-10-22 | 2021-03-02 | 沈阳鼓风机集团安装检修配件有限公司 | Vibration measurement probe field fault diagnosis method |
| CN113074767A (en) * | 2021-03-30 | 2021-07-06 | 宁夏计量质量检验检测研究院 | Eddy current sensor dynamic and static integrated calibrating device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20140418 |