An Adaptive Compensation Method for Active Electromagnetic Detection Primary Field

A self-adaptive compensation and electromagnetic detection technology, applied in electric/magnetic exploration, radio wave measurement systems, measurement devices, etc., can solve problems such as difficult adjustment, difficult attitude adjustment of magnetic sensors, electromagnetic field distortion, etc., and reduce position accuracy. and the required effect of attitude accuracy
CN110673220BActive Publication Date: 2021-06-08750 TEST SITE OF CHINA SHIPBUILDING IND CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
750 TEST SITE OF CHINA SHIPBUILDING IND CORP
Publication Date
2021-06-08

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Abstract

The invention discloses a primary field adaptive compensation method for active electromagnetic detection, which further includes a sampling coil (1), a gain controller (2), a delay regulator (3), and a compensation coil (4), magnetic sensor (5), processor (6), signal source (7), power amplifier (8) and electromagnetic radiator (9), wherein, sampling coil (1) is placed on electromagnetic radiator (9) Nearby or integrated with the electromagnetic radiator (9), the compensation coil (4) is placed near the magnetic sensor (5), and the processor (6) adjusts the parameters of the gain controller (2) and the delay regulator (3), Driving the compensating coil (4) generates a compensating electromagnetic field. The method is convenient for engineering realization, can compensate the primary field fluctuation generated by the electromagnetic radiator of the active electromagnetic detection system, and minimize the primary field component output by the magnetic sensor.
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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...

Claims

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