SU148533A1 - Instrument with sensor for contactless control of the size of metal products by the method of eddy currents - Google Patents
Instrument with sensor for contactless control of the size of metal products by the method of eddy currentsInfo
- Publication number
- SU148533A1 SU148533A1 SU695721A SU695721A SU148533A1 SU 148533 A1 SU148533 A1 SU 148533A1 SU 695721 A SU695721 A SU 695721A SU 695721 A SU695721 A SU 695721A SU 148533 A1 SU148533 A1 SU 148533A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sensor
- instrument
- size
- eddy currents
- metal products
- Prior art date
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
Известны приборы дл бесконтактного контрол размеров механических изделий, например, толщины стенок стальных труб, способом вихревых токов, состо щие из индуктивных датчиков, генератора, усилителей , детекторов, индикаторного устройства и др.Instruments are known for contactless control of the dimensions of mechanical products, for example, wall thicknesses of steel pipes, by means of eddy currents, consisting of inductive sensors, a generator, amplifiers, detectors, an indicator device, etc.
Недостатком известных приборов вл етс то, что они не обеспечивают надлежащей точности измерений, так как изменени результирующего магнитного пол возникают не только вследствие изменений контролируемого параметра, например толщины стенки трубы, но и вследствие изменени рассто ни между датчиком и контролируемым изделием.A disadvantage of the known devices is that they do not provide adequate measurement accuracy, since changes in the resulting magnetic field arise not only due to changes in the monitored parameter, such as pipe wall thickness, but also due to a change in the distance between the sensor and the product being monitored.
Дл устранени этого недостатка в описываемом приборе применена фазочувствительна след ща система, удерживающа датчик на заданном рассто нии от поверхности контролируемого издели .To eliminate this drawback, a phase-sensitive tracking system is used in the device described, which holds the sensor at a predetermined distance from the surface of the test item.
На чертеже изображена структурна схема описываемого прибора .The drawing shows a block diagram of the described device.
Напр жение высокой частоты с генератора / подаетс на соединенные параллельно токовые обмотки основного датчика 2 и эталонного датчика 3. С измерительных обмоток, включенных последовательно и встречно, напр жение подаетс на усилитель 4, выходное напр жение которого поступает на два капала: канал индикатора 5 и канал фазового детектора 5 след щей системы. В канале индикатора напр жение высокой частоты детектируетс амплитудным детектором 7 и регистрируетс индикаторным устройством 5, которое может быть ламповым вольтметром со стрелочным прибором, или залисывающим устройством, или каким-либо другим устройством, реагирующим на изменени величины посто нного напр жени . В канале след щей системы напр жение с усилител 4 поступает на фазовый детектор 6, на выходе которого напр жение мен етс в соответствии с изменением фазы напр жени на выходе системы датчиков. Это напр жение усиливаетThe high frequency voltage from the generator / is supplied to the parallel windings of the main sensor 2 and the reference sensor 3. From the measuring windings connected in series and counter, the voltage is applied to the amplifier 4, the output voltage of which goes to two drops: the indicator channel 5 and The channel of the phase detector 5 is a tracking system. In the indicator channel, a high-frequency voltage is detected by an amplitude detector 7 and recorded by an indicator device 5, which can be a lamp voltmeter with a pointer device, or a sling device, or some other device that reacts to changes in DC voltage. In the channel of the servo system, the voltage from the amplifier 4 is fed to the phase detector 6, at the output of which the voltage varies in accordance with the change in the phase of the voltage at the output of the sensor system. This stress increases
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU695721A SU148533A1 (en) | 1961-02-01 | 1961-02-01 | Instrument with sensor for contactless control of the size of metal products by the method of eddy currents |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU695721A SU148533A1 (en) | 1961-02-01 | 1961-02-01 | Instrument with sensor for contactless control of the size of metal products by the method of eddy currents |
Publications (1)
Publication Number | Publication Date |
---|---|
SU148533A1 true SU148533A1 (en) | 1961-11-30 |
Family
ID=48303775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU695721A SU148533A1 (en) | 1961-02-01 | 1961-02-01 | Instrument with sensor for contactless control of the size of metal products by the method of eddy currents |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU148533A1 (en) |
-
1961
- 1961-02-01 SU SU695721A patent/SU148533A1/en active
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