CN2575673Y - Round plugging electric meter base - Google Patents
Round plugging electric meter base Download PDFInfo
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- CN2575673Y CN2575673Y CN 02280834 CN02280834U CN2575673Y CN 2575673 Y CN2575673 Y CN 2575673Y CN 02280834 CN02280834 CN 02280834 CN 02280834 U CN02280834 U CN 02280834U CN 2575673 Y CN2575673 Y CN 2575673Y
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- magnetic core
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- electromagnetic sensor
- negative voltage
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Abstract
The utility model belongs to a dynamic tracking positioning device used for automatic flaw detection of welding seam of a welded tube, which particularly relates to an electromagnetic dynamic tracking positioning device for a welding seam automatic flaw detection system. The utility model is composed of an electromagnetic sensor and a tracking controller, wherein, the electromagnetic sensor is composed of a ferrite E-shaped magnetic core, a primary coil, a secondary coil, an oscillator and an amplifier, the electromagnetic sensor is sealed in a cylinder made of non-permeability magnetic material, such as a thin wall aluminum tube, and the tracking controller is composed of a filter, a differential amplifier and a positive negative voltage ejection follower without loss of electrical level. The electromagnetic sensor has sensitive position identification function to permeability magnetic material, and the controller amplifies the output signal of the sensor, obtains the positive negative voltage which is directly proportional with the position deviation and directly controls the rotation direction and the rotation speed of a servo motor. Consequently, the utility model can trace and locking the target position of a moving system in real time and can be used for the welding seam automatic flaw detection system. The utility model has the characteristics of high sensitivity, high response speed and flexible and reliable control.
Description
Technical field the utility model belongs to a kind of dynamic tracking locating device that is used for the weld joint automatized flaw detection of welded tube, particularly relates to a kind of electromagnetic type dynamic tracking locating device that is applicable to weld joint automatized fault detection system.
Background technology is present, the multiple dynamic tracking localization method that is applicable to weld joint automatized fault detection system is arranged, such as mechanical roller localization method, CCD image capture method, electromagnetic induction method, laser scanning method etc. both at home and abroad.In the automatic ultrasonic inspection system of longitudinal welded pipe and spiral welded pipe weld seam, the dynamic tracking of relative position location is one of gordian technique that guarantees system performance index between probe and weld seam, is the problem of constantly exploring both at home and abroad for many years always.Traditional dynamic tracking localization method as: there is the low shortcoming of tracking accuracy in mechanical roller method; The CCD image capture method is a kind of optical means, because the weld seam supersonic detection water that need be coupled, and the waste heat of welding position produces steam, can cause the CCD optical system can't operate as normal; Laser scanning method cost is too high and practicality is relatively poor; The electromagnetic induction method has the advantage that cost is low, practical and not influenced by aqueous vapor, but precision is lower, if can further improve the precision of electromagnetic induction method, will be probe tracking localization method more satisfactory in the weld joint automatized inspection field.
The technical matters that summary of the invention the utility model is solved is in the automatic ultrasonic inspection system of longitudinal welded pipe and spiral welded pipe weld seam, but a kind of having of electromagnetic sensor and tracking control unit formation electromagnetism follow-up control apparatus highly sensitive, the fast direct drive servovalve motor of response speed that adopts is provided.
The utility model electromagnetism follow-up control apparatus technical scheme content Description:
The utility model is a kind of weld joint automatized fault detection system that is applicable to, the electromagnetism follow-up control apparatus that constitutes by electromagnetic sensor and tracking control unit, it is characterized in that: adopt ferrite " E " type magnetic core and primary and secondary coil and oscillator, amplifier, form electromagnetic sensor, and be packaged in the non-magnet material cylinder, in thin-wall aluminium pipe; The generating positive and negative voltage emitter follower that adopt wave filter, differential amplifier, does not lose level is formed tracking control unit;
Electromagnetic sensor, adopt integrated circuit to form multivibrator, and obtain the square wave of same duty cycle through the trigger frequency division, adopt 4 transistors to form the current driving circuit of timesharing alternate conduction, the primary coil of de-energisation ferrite " E " type magnetic core, the primary coil branch is around in the both sides of " E " type magnetic core, both sides equal turn numbers and composition series loop, " E " type magnetic core be shaped as " E " shape, its physical dimension should satisfy M≤S≤L, wherein S is the physical dimension of permeability magnetic material tracking target, and M is the interior hole dimension of " E " type magnetic core, and L is the housing size of " E " type magnetic core; The both sides of " E " type magnetic core are twined the secondary coil of two groups of equal turn numbers respectively, adopt 2 integrated amplifiers that performance is identical, amplify the induced voltage signal of 2 groups of secondary coils that are wound in " E " type magnetic core both sides respectively.
Tracking control unit adopts diode and RC parallel circuit to form wave filter, to eliminate the adverse effect that electromagnetic sensor two-way output waveform distortions and phase differential produce tracking effect, changes the RC time constant and can change tracking response speed; Adopt the integrated differential amplifier of secondary, amplify electromagnetic sensor 2 tunnel output signals behind filter filtering the DC voltage pressure difference signal and obtain positive and negative voltage output, with difference position deviation direction; Adopt 2 PNP transistors and 2 NPN transistor, form the generating positive and negative voltage emitter follower that does not lose level, can directly drive to watch and use motor, thereby its rotating speed of real-time regulated is followed the tracks of dynamic object and the constant purpose of locking relative position with turning to reach.
The utility model electromagnetism follow-up control apparatus, the electromagnetic sensor of this device has responsive location recognition function to permeability magnetic material, controller amplifies the generating positive and negative voltage that the back acquisition is directly proportional with position deviation to the signal of sensor output, can directly control the sense of rotation and the rotating speed of servomotor, but thereby the target location of real-time follow-up lock motion system, compare with existing conventional method, tracking accuracy height, fast, the practical advantage of response speed are arranged.
Description of drawings
Fig. 1 is the structured flowchart of electromagnetism follow-up control apparatus
Fig. 2 is the electromagnetic sensor electrical schematic diagram
Fig. 3 is the tracking control unit electrical schematic diagram
Fig. 4 is the contour structures synoptic diagram of ferrite E type magnetic core and tracking target
Specific implementation method the utility model electromagnetism follow-up control apparatus is to realize like this.Be described further in conjunction with the accompanying drawings, see that Fig. 1 is the structured flowchart of electromagnetism follow-up control apparatus, frame of broken lines [I] is an electromagnetic sensor, and frame of broken lines [II] is a tracking control unit.Among the figure: the 1st, ferrite " E " type magnetic core and primary and secondary coil, the 2nd, oscillator and current driver, the 3, the 4th, integrated amplifier, the 5, the 6th, wave filter, the 7, the 8th, differential amplifier, the 9th, do not lose the generating positive and negative voltage emitter follower of level.
See that Fig. 2 is the electromagnetic sensor electrical schematic diagram, integrated reverser (such as CD4049) IC1, IC2 and R1, C1, W1 form multivibrator, W1 scalable oscillation frequency, behind trigger (such as CD4013) frequency division, obtain the square wave of same duty cycle, obtain the timesharing conducting current driving circuit that reverse square wave de-energisation is made up of TR1, TR2, TR3, TR4 respectively through integrated reverser (such as CD4049) 1C3, IC4, wherein D1, D2 and D3, D4 play temperature compensation function; Be wound in the primary coil L1 and the L2 equal turn numbers of ferrite " E " type magnetic core both sides and form series loop; Be wound in the secondary coil L3 and the L4 equal turn numbers of " E " type magnetic core both sides, its induced voltage signal is delivered to integrated amplifier (such as MAX412) IC6 respectively and IC7 amplifies, two-way output " A " and " B " should equate when unloaded, can regulate by W2 and W3.
Fig. 3 is the tracking control unit electrical schematic diagram, D1, R5, C3 and D2, R6, C4 form 2 path filters, handle oscillator signal respectively from electromagnetic sensor two-way output terminal " A " and " B ", C1 and C2 are coupling capacitances, R1, R3 and R2, R4 and W1 form two-way and divide hydraulic circuit, and the voltage on resistance R 7, the R8 is equated; IC1 and IC2 form two differential amplifier (such as MAX412), and enlargement factor is regulated by W1 and W2, export the generating positive and negative voltage that is directly proportional with left and right sides position deviation from R11; TR1, TR2, TR3, TR4 form the emitter follower that does not lose level, but the direct drive servovalve motor, and R12, C5 eliminate the bursty interference level; EW is pointer gauge outfit, and the size of indication output generating positive and negative voltage is regulated W1 and made pointer be designated as zero when unloaded.
See that Fig. 4 is " E " type magnetic core and tracking target contour structures synoptic diagram, the 1st, " E " type magnetic core, it is shaped as " E " shape, and the jut size S of tracking target is several sizes of watching of tracking target, such as weld width.The primary coil branch is around in the both sides of " E " type magnetic core, both sides equal turn numbers and composition series loop, the physical dimension of " E " type magnetic core should satisfy M≤S≤L, and wherein S is the physical dimension of permeability magnetic material tracking target, M is the interior hole dimension of " E " type magnetic core, and L is the housing size of " E " type magnetic core; The both sides of " E " type magnetic core are twined the secondary coil of two groups of equal turn numbers respectively, adopt 2 integrated amplifiers that performance is identical, amplify the induced voltage signal of 2 groups of secondary coils respectively.
Claims (3)
1, a kind ofly is used for weld joint automatized fault detection system, the electromagnetism follow-up control apparatus that constitutes by electromagnetic sensor and tracking control unit, it is characterized in that: adopt ferrite " E " type magnetic core and primary and secondary coil and oscillator, amplifier, form electromagnetic sensor, and be packaged in the non-magnet material cylinder, in thin-wall aluminium pipe; The generating positive and negative voltage emitter follower that adopt wave filter, differential amplifier, does not lose level is formed tracking control unit.
2, electromagnetic sensor according to claim 1, it is characterized in that: adopt integrated circuit to form multivibrator, and obtain the square wave of same duty cycle through the trigger frequency division, adopt 4 transistors to form the current driving circuit of timesharing alternate conduction, the primary coil of de-energisation ferrite " E " type magnetic core; The primary coil branch is around in the both sides of " E " type magnetic core, both sides equal turn numbers and composition series loop, " E " type magnetic core be shaped as " E " shape, its physical dimension should satisfy M≤S≤L, wherein S is the physical dimension of permeability magnetic material tracking target, M is the interior hole dimension of E type magnetic core, and L is the housing size of " E " type magnetic core; The both sides of " E " type magnetic core are twined the secondary coil of two groups of equal turn numbers respectively, adopt 2 integrated amplifiers that performance is identical, amplify the induced voltage signal of 2 groups of secondary coils that are wound in " E " type magnetic core both sides respectively.
3, tracking control unit according to claim 1 is characterized in that: adopt diode and RC parallel circuit to form wave filter; Adopt the integrated differential amplifier of secondary, amplify electromagnetic sensor 2 tunnel output signals behind filter filtering the DC voltage pressure difference signal and obtain positive and negative voltage output; Adopt 2 PNP transistors and 2 NPN transistor, form the generating positive and negative voltage emitter follower that does not lose level, but the direct drive servovalve motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02280834 CN2575673Y (en) | 2002-11-01 | 2002-11-01 | Round plugging electric meter base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02280834 CN2575673Y (en) | 2002-11-01 | 2002-11-01 | Round plugging electric meter base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575673Y true CN2575673Y (en) | 2003-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02280834 Expired - Lifetime CN2575673Y (en) | 2002-11-01 | 2002-11-01 | Round plugging electric meter base |
Country Status (1)
| Country | Link |
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| CN (1) | CN2575673Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311743B (en) * | 2007-05-24 | 2011-05-25 | 三洋电机株式会社 | Signal detection circuit |
| CN102289215A (en) * | 2010-06-21 | 2011-12-21 | 中国石油天然气集团公司 | Synchronous control system for digital rays of circular welding seam on pipe |
| CN101248996B (en) * | 2007-02-23 | 2013-09-04 | 通用电气公司 | Coil arrangement for electromagnetic tracking method and system |
| CN108982651A (en) * | 2018-08-09 | 2018-12-11 | 苏州热工研究院有限公司 | Exchange leakage field sensor based on ferromagnetic butt plates welding seam crack detection and the method using its progress crack detection |
| CN111201720A (en) * | 2017-10-12 | 2020-05-26 | 谷歌有限责任公司 | Hemispherical blur correction in electromagnetic position tracking systems |
-
2002
- 2002-11-01 CN CN 02280834 patent/CN2575673Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101248996B (en) * | 2007-02-23 | 2013-09-04 | 通用电气公司 | Coil arrangement for electromagnetic tracking method and system |
| CN101311743B (en) * | 2007-05-24 | 2011-05-25 | 三洋电机株式会社 | Signal detection circuit |
| CN102289215A (en) * | 2010-06-21 | 2011-12-21 | 中国石油天然气集团公司 | Synchronous control system for digital rays of circular welding seam on pipe |
| CN102289215B (en) * | 2010-06-21 | 2013-04-24 | 中国石油天然气集团公司 | Synchronous control system for digital rays of circular welding seam on pipe |
| CN111201720A (en) * | 2017-10-12 | 2020-05-26 | 谷歌有限责任公司 | Hemispherical blur correction in electromagnetic position tracking systems |
| CN111201720B (en) * | 2017-10-12 | 2021-10-19 | 谷歌有限责任公司 | Hemispherical blur correction in electromagnetic position tracking systems |
| CN108982651A (en) * | 2018-08-09 | 2018-12-11 | 苏州热工研究院有限公司 | Exchange leakage field sensor based on ferromagnetic butt plates welding seam crack detection and the method using its progress crack detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANSHAN MEISI MEASUREMENT TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ANSHAN MEISI DETECTOR OF DEFECTS CO., LTD. Effective date: 20050225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050225 Address after: 114014 Yongning Street, Anshan Economic Development Zone, Liaoning, 9 Patentee after: Meisi Crack Detection Equipment Co Ltd, Anshan Address before: 114014 Yongning Street, Anshan Economic Development Zone, Liaoning, 9 Patentee before: Meisi Crack Detection Equipment Co Ltd, Anshan |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121101 Granted publication date: 20030924 |