SU443295A1 - Device for processing eddy-current flaw detector signal - Google Patents
Device for processing eddy-current flaw detector signalInfo
- Publication number
- SU443295A1 SU443295A1 SU1767400A SU1767400A SU443295A1 SU 443295 A1 SU443295 A1 SU 443295A1 SU 1767400 A SU1767400 A SU 1767400A SU 1767400 A SU1767400 A SU 1767400A SU 443295 A1 SU443295 A1 SU 443295A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phase
- detector
- amplitude
- low
- amplifier
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
Изобретение относитс к области измерительной техники, в частности к обработке сигнала в дефектоскопии.The invention relates to the field of measurement technology, in particular to signal processing in flaw detection.
Известны устройства обработки сигнала токовихревых дефектоскопов , содержащие генератор, датчик и вторичную схему обработки сигналав Эти устройства имеют один : канал обработки сигнала содержащий компенсаторы.Known devices for signal processing of eddy-current flaw detectors include a generator, a sensor, and a secondary signal processing circuit. These devices have one: a signal processing channel containing compensators.
Целью изобретени вл етс повышение чувствительности и упрощение технологии обработки сигнала , а также автоматизаци процесса .The aim of the invention is to increase the sensitivity and simplify the signal processing technology, as well as automate the process.
Дл дос5 ижени этой цели в предлагаемом устройстве использована двухканальна схема обработки сигнала, в которой имеютс два канала: амплитудный и фазовый .To achieve this goal, the proposed device uses a two-channel signal processing circuit in which there are two channels: amplitude and phase.
мплитудный канал состоит из детекора , аильтраНч , усилител НЧ . азогай канал состоит из фазорращател , двух усилителей ограничителей , фазового детектора, фильтра Н ч и усилител НЧ ,The amplitude channel consists of a detector, aerial, and a low frequency amplifier. The azogay channel consists of a phase shifter, two limiter amplifiers, a phase detector, an Nh filter, and an LF amplifier,
На- чертеже приведена принципиальна схема предложенного устройства , где обозначены: I - генератор; 2 - дашчик; 3 - фазовращатель; 4 - амплитудный детектор: 5 - фильтр НЧ ; 6 - усилитель НЧ | 7-8 - усилители ограничители; 9 Фазовый детектор; 10 - фильтр НЧ | II усилитель НЧ ; 12 - коррел тор.The drawing shows a schematic diagram of the proposed device, where indicated: I - generator; 2 - Dashchik; 3 - phase shifter; 4 - amplitude detector: 5 - low pass filter; 6 - bass amplifier | 7-8 - amplifier limiters; 9 Phase detector; 10 - low pass filter | II bass booster; 12 - correl tor.
Устройство работает следующим образом.The device works as follows.
Сигнал с токовихревого датчика 2 дефектоскопа поступает на первый канал - на амплитудный детектор , который выдел ет модулирующий сигнал.Высокочастотна составл юща последнего отфильтровываетс фильтром НЧ 5 и усиливаетс усилителем НЧ 6.The signal from the eddy current sensor 2 is fed to the first channel - to the amplitude detector, which extracts the modulating signal. The high-frequency component of the latter is filtered by the low-pass filter 5 and amplified by the low-frequency amplifier 6.
и помощью фазовращател 3 фаза опорного сигнала сдвигаетс относительно исследуемого на 90°.and using the phase shifter 3, the phase of the reference signal is shifted relative to the investigated signal by 90 °.
Усилителивограничители 7 и 8 формируют пр моугольные импульсы, поступающие на фазовый детектор 9, который выдел ет фазовую составл ющую моделирующего сигнала, Вч, составл юща которого отфильтровываетс фильтром НЧ 10, усиливаетс усилителем НЧ II.Сигналы с обоих усилителей НЧ поступают на коооел тоо 12, с помощью котооого i устран етс вли ние мешающего фактора .Amplifiers 7 and 8 form square-wave pulses arriving at phase detector 9, which separates the phase component of the simulating signal, HF, which is filtered by the low pass filter 10, amplified by the low pass amplifier II. Signals from both low pass amplifiers are fed to the front end 12, by which i, the influence of the interfering factor is eliminated.
Изобретение может быть использовано дл неразрушающего контрол В- промышленности.The invention can be used for non-destructive testing of the B-industry.
ПРЕДМЕТ ИЗОБРЕТЕНИЯSUBJECT OF INVENTION
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1767400A SU443295A1 (en) | 1972-04-10 | 1972-04-10 | Device for processing eddy-current flaw detector signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1767400A SU443295A1 (en) | 1972-04-10 | 1972-04-10 | Device for processing eddy-current flaw detector signal |
Publications (1)
Publication Number | Publication Date |
---|---|
SU443295A1 true SU443295A1 (en) | 1974-09-15 |
Family
ID=20509000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1767400A SU443295A1 (en) | 1972-04-10 | 1972-04-10 | Device for processing eddy-current flaw detector signal |
Country Status (1)
Country | Link |
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SU (1) | SU443295A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU201551U1 (en) * | 2020-09-08 | 2020-12-21 | Общество с ограниченной ответственностью "Алтек-Наука" | Handheld scanner for non-destructive testing of the edge of the hub and adjacent fillet transitions of wheels of rail vehicles |
-
1972
- 1972-04-10 SU SU1767400A patent/SU443295A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU201551U1 (en) * | 2020-09-08 | 2020-12-21 | Общество с ограниченной ответственностью "Алтек-Наука" | Handheld scanner for non-destructive testing of the edge of the hub and adjacent fillet transitions of wheels of rail vehicles |
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