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DC and low frequency magnetic field signal detection device and detection method thereof

A signal detection, low-frequency magnetic field technology, applied in the direction of the size/direction of the magnetic field, measurement device, sound wave re-radiation, etc., can solve the problems of difficulty in practical application, high product noise, increase the size and complexity of the sensor, and achieve a simple structure. , The effect of reducing test error and noise is completely practical

Inactive Publication Date: 2011-04-06
曹宜
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Problems solved by technology

[0004] The present invention mainly solves the technical problems that the circuit in the prior art often needs a special packaging shell, which increases the volume and complexity of the entire sensor in structure, and the product is noisy and difficult to be practical; it provides a Simple structure, low noise and completely practical DC and low frequency magnetic field signal detection equipment and its detection method

Method used

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  • DC and low frequency magnetic field signal detection device and detection method thereof
  • DC and low frequency magnetic field signal detection device and detection method thereof
  • DC and low frequency magnetic field signal detection device and detection method thereof

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Embodiment

[0039] A DC and low-frequency magnetic field signal detection device includes a probe device 30 and a detection module 31 connected to the probe device 30 . The probe device 30 includes at least two skeletons 2 provided with placement slots 3 and wire retaining wings 4 at both ends. The magnetic core 1 is arranged in the placement slots 3 , and the coil winding 37 is wound on the skeletons 2 . The present invention also includes a retaining line 8 provided with a plurality of metallized hole pads 5, a plurality of metallized hole pads 5 are arranged on the retaining line wings 4, and the retaining lines 8 are stacked and fixed on the retaining line wings 4, the The periphery of the metallized hole pad 5 is provided with a copper clad layer 6 . Such as figure 1 , Select the magnetic core 1 as an amorphous strip with high permeability and low coercive force, with a width of 2mm and a length of 20mm. Such as figure 2 , image 3 , Figure 4 , using the printed circuit board ...

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Abstract

The invention relates to a detection device and a detection method thereof, in particular to a DC and low frequency magnetic field signal detection device and a detection method thereof. The DC and low frequency magnetic field signal detection device is characterized by comprising a probe device (30) and a detection module (31) connected with the probe device (30). Thus, the invention has the following advantages that the design is reasonable, the structure is simple, noise is lower, the practicability is complete, the output zero of the entire test device can not be changed along with temperature variation so that test errors are greatly reduced, and the output signal of the entire device can not produce nonlinearity.

Description

technical field [0001] The invention relates to a detection device and a wave detection method thereof, in particular to a DC and low-frequency magnetic field signal detection device and a wave detection method thereof. Background technique [0002] When the measured magnetic field has a component parallel to the longitudinal direction of the probe, under the excitation of the symmetrical alternating magnetic field, the magnetic state of the magnetic core will change "asymmetrically", and the induced voltage on the induction coil outside the magnetic core will change with the external magnetic field. The component of the magnetic field vector can be measured by using this mechanism. Corresponding detection devices are widely used to measure the earth's magnetic field, underground pipelines and ferromagnetic object detection, geological exploration, etc., and can also be used for current testing. [0003] At present, the fixing of the probe on the circuit board needs to proc...

Claims

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Application Information

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IPC IPC(8): G01R33/02G01V3/10
Inventor 曹宜
Owner 曹宜
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