SU146970A1 - Device for measuring the magnetic field gradient - Google Patents

Device for measuring the magnetic field gradient

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Publication number
SU146970A1
SU146970A1 SU668474A SU668474A SU146970A1 SU 146970 A1 SU146970 A1 SU 146970A1 SU 668474 A SU668474 A SU 668474A SU 668474 A SU668474 A SU 668474A SU 146970 A1 SU146970 A1 SU 146970A1
Authority
SU
USSR - Soviet Union
Prior art keywords
magnetic field
measuring
field gradient
ferrosonde
fluxgate
Prior art date
Application number
SU668474A
Other languages
Russian (ru)
Inventor
Ю.В. Афанасьев
В.П. Катков
Original Assignee
Ю.В. Афанасьев
В.П. Катков
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ю.В. Афанасьев, В.П. Катков filed Critical Ю.В. Афанасьев
Priority to SU668474A priority Critical patent/SU146970A1/en
Application granted granted Critical
Publication of SU146970A1 publication Critical patent/SU146970A1/en

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Description

Известные устройства дл  измерени  градиента магнитного пол  с помощью дифференциального феррозонда, снабженные каналом автоматической компенсации напр женности пол , действующего вдоль продольных осей полуэлементов феррозонда, имеют низкую точность измерени , так как измер ема  величина намного меньше общей напр женности геомагнитного пол  земли, на фоне которого производ тс  эти измерени .The known devices for measuring the magnetic field gradient using a differential fluxgate, equipped with a channel for automatic compensation of the field strength acting along the longitudinal axes of the semi-elements of the fluxgate, have a low measurement accuracy, since the measured value is much less than the total earth's magnetic field strength, against which ts these measurements.

Предлагаемое устройство отличаетс  от известных, тем, что оно снабжено каналом автоматического обеспечени  магнитной соосности полуэлементов феррозонда с отрицательной обратной св зью по инфранизким частотам сигнала. Это позволило значительно повысить точность измерени На фиг. 1 приведена принципиальна  схема дифференциального феррозонда, содержащего два полуэлемента, расположенные на некотором рассто нии S относительно друг друга,  вл ющемс  базой феррозонда.The proposed device differs from the known ones in that it is provided with a channel for automatically providing the magnetic coaxiality of the half-elements of the fluxgate with negative feedback on the infra-low signal frequencies. This made it possible to significantly improve the measurement accuracy. In FIG. Figure 1 shows a schematic diagram of a differential ferrosonde containing two half-cells located at a certain distance S relative to each other, which is the base of the ferrosonde.

Каждый полуэлемент содержит пермалоевые сердечн ики / и 2 с распределенными по их длине первичными 5 и 4 и вторичными 5 и 6 обмотками.Each half element contains permalloy cores / and 2 with primary 5 and 4 distributed along their length and secondary 5 and 6 windings.

Первичные обмотки включены параллельно и предназначены дл  возбуждени  сердечников переменным током. Вторичные обмотки включены навстречу друг другу и служат дл  съема э-д.с. сигнала, пропорционального действующему на базе S градиенту магнитного пол . Частота э.д.с. сигнала равна удвоенной частоте тока возбуждени .The primary windings are connected in parallel and are designed to excite the cores with alternating current. The secondary windings are connected towards each other and serve for the removal of e-ds. a signal proportional to the magnetic field gradient acting on the base of S. Emf frequency signal equal to twice the frequency of the excitation current.

На фиг- 2 приведена принципиальна  схема предлагаемого устройства дл  измерени  градиента магнитного пол  с помощью описанного дифференциального феррозонда.Fig. 2 is a schematic diagram of the proposed device for measuring the magnetic field gradient using the described differential ferrosonde.

Сигнал с феррозонда 7, усилива сь в усилителе S, поступает на синхронный детектор 9 и далее на регистрирующий прибор 10. Феррозонд и синхронный детектор питаютс  от общего генератора //- ПаралThe signal from the flux-gate 7, amplified in the amplifier S, is fed to the synchronous detector 9 and then to the recording device 10. The ferrosonde and the synchronous detector are fed from a common generator // - Parallel

SU668474A 1960-05-30 1960-05-30 Device for measuring the magnetic field gradient SU146970A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU668474A SU146970A1 (en) 1960-05-30 1960-05-30 Device for measuring the magnetic field gradient

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU668474A SU146970A1 (en) 1960-05-30 1960-05-30 Device for measuring the magnetic field gradient

Publications (1)

Publication Number Publication Date
SU146970A1 true SU146970A1 (en) 1961-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU668474A SU146970A1 (en) 1960-05-30 1960-05-30 Device for measuring the magnetic field gradient

Country Status (1)

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SU (1) SU146970A1 (en)

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