Active electromagnetic detection primary field adaptive compensation method

A self-adaptive compensation and electromagnetic detection technology, which is applied in electric/magnetic exploration, radio wave measurement system, measurement device, etc., can solve the problems of difficult adjustment, electromagnetic field distortion, and difficult adjustment of magnetic sensor attitude, so as to reduce the position accuracy and the effect of attitude accuracy requirements on

Active Publication Date: 2020-01-10
中国船舶重工集团公司七五0试验场
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Problems solved by technology

According to the vector principle, when the angle between the sensitive axis of the magnetic sensor and the magnetic line of force at the position is , the signal detected by the magnetic sensor is proportional to it. Therefore, this method has very high requirements for the installation position and attitude accuracy of the magnetic sensor, and is affected by the deformation of the mounting platform. Larger, frequent adjustments or diff

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  • Active electromagnetic detection primary field adaptive compensation method
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Embodiment Construction

[0022] The specific implementation manners of the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] As attached to the manual figure 1 As shown, a primary field adaptive compensation method for active electromagnetic detection, the active electromagnetic detection primary field adaptive compensation method also includes a sampling coil 1, a gain controller 2, a delay regulator 3, a compensation coil 4, a magnetic sensor 5, Processor 6, signal source 7, power amplifier 8 and electromagnetic radiator 9, wherein,

[0024] The sampling coil 1 is placed near the electromagnetic radiator 9 or integrated with the electromagnetic radiator 9, which can fully couple the primary electromagnetic field generated by the electromagnetic radiator 9,

[0025] The compensation coil 4 is placed near the magnetic sensor 5, and the axial direction of the compensation coil 4 is consistent with the electromagnet...

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Abstract

The invention discloses an active electromagnetic detection primary field adaptive compensation method. The active electromagnetic detection primary field adaptive compensation method also comprises asampling coil (1), a gain controller (2), a delay regulator (3), a compensation coil (4), a magnetic sensor (5), a processor (6), a signal source (7), a power amplifier (8) and an electromagnetic radiator (9), wherein the sampling coil (1) is placed near the electromagnetic radiator (9) or is integrated with the electromagnetic radiator (9) into a whole, the compensation coil (4) is placed near the magnetic sensor (5), and the processor (6) performs parameter adjustment on the gain controller (2) and the delay regulator (9) and drives the compensation coil (4) to generate a compensation electromagnetic field. The method disclosed by the invention is convenient for engineering realization and can compensate primary field flunctuation generated by the electromagnetic radiator of an active electromagnetic detection system, so that a primary field component output by the magnetic sensor is minimum.

Description

technical field [0001] The invention relates to the technical field of active electromagnetic detection, in particular to an adaptive compensation method for primary field of active electromagnetic detection. Background technique [0002] Active electromagnetic detection is an important branch of electrical detection. The application of active electromagnetic detection involves the primary field and the secondary field. The primary field is the electromagnetic field directly radiated by the electromagnetic radiator, and the secondary field is the electromagnetic field generated by the primary field after refraction, scattering, and reflection. The principle of active electromagnetic detection is based on the difference between the magnetic permeability and dielectric properties of the target and the surrounding environment, so it will cause a sudden change in the secondary field, and the purpose of detecting the target is achieved by observing the change of the secondary fie...

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Application Information

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IPC IPC(8): G01V3/08G01V3/10G01V13/00
CPCG01V3/08G01V3/10G01V13/00
Inventor 王心怡焦瑜呈姜春华张国光纳杰斯
Owner 中国船舶重工集团公司七五0试验场
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