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A measuring device and measuring method for multi-layer coil board

A technology of multi-layer coils and measuring devices, which is applied in the direction of measuring devices, measuring electrical variables, measuring electricity, etc., can solve the problems of poor sampling accuracy and large error in measurement results, and achieve the effect of improving the effect of noise reduction

Active Publication Date: 2020-08-18
NANJING ALLFAVOR ELECTRONICS
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  • Claims
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Problems solved by technology

However, the sampling accuracy of this detection device is poor, and the error of the measurement result is large

Method used

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  • A measuring device and measuring method for multi-layer coil board
  • A measuring device and measuring method for multi-layer coil board

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Embodiment Construction

[0015] The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt mature bolts, rivets, welding in the prior art , pasting and other conventional means, no longer described in detail here.

[0016] refer to Figure 1-2 , a specific embodiment of the invention comprises two magnetic field output probes 1, the magnetic field directions of the two magnetic field output probes 1 are perpendicular to each other, and the input end of each magnetic field output probe 1 is connected with an independent signal generator 2, and the two signal generators 2 Outputting sine wave signals, the signal frequencies are 20-30Hz and 150-200Hz respectively; it also includes a signal output circuit 3, the output terminal of the signal output circuit 3 is connected to the controller 4, and the signal output terminal 3 c...

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Abstract

The invention discloses a measuring device applied to a multilayer coil plate. The measuring device comprises two magnetic field output probes. The magnetic field directions of two magnetic field output probes are perpendicular to each other. The input end of each magnetic field output probe is connected with an independent signal generator. Two signal generators output sinusoidal signals with thefrequencies of 20 to 30 Hz and 150 to 200 Hz respectively. The measuring device further comprises a signal output circuit. The output end of the signal output circuit is connected with a controller.The signal output end collects the inductance energy-storage voltage on the multilayer coil plate, and sends the voltage value to the controller. According to the invention, the deficiencies of the prior art can be improved, and the detection accuracy of a PCB board is improved.

Description

technical field [0001] The invention relates to the technical field of PCB board detection, in particular to a measuring device and a measuring method for a multilayer coil board. Background technique [0002] The inner layer circuit of multi-layer PBC board cannot be observed intuitively, and the open and short circuit condition of the inner layer can only be determined through electrical testing. It will affect the connection of the line. This kind of problem PCB cannot be tested through the electrical measurement process. At this time, the method of inductance test can be used to judge. Chinese utility model patent CN 205809224U discloses a non-contact PCB coil turn-to-turn short circuit detection device, which detects the PCB board by placing the PCB board in an alternating magnetic field and measuring the energy storage change of the PCB board inductance. However, the sampling accuracy of this detection device is poor, and the error of the measurement result is large. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/28
CPCG01R31/2812
Inventor 邵福书陈爱莲刘健赵伟平
Owner NANJING ALLFAVOR ELECTRONICS
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