Short circuit detector based on electromagnetic induction principle and detection method of short circuit detector

Abstract

The invention relates to a short circuit detector based on an electromagnetic induction principle and a detection method of the short circuit detector. The short circuit detector comprises a processor, and a magnetic head, a signal conditioning circuit and an A / D (Analog / Digital) conversion circuit which are connected in sequence, wherein the output end of the A / D conversion circuit is connected with the processor; the D / A conversion circuit, a V / I (Voltage / Current) conversion circuit and a loudspeaker or an earphone are connected in sequence; the input end of the D / A conversion circuit is connected with the processor; the signal conditioning circuit comprises an I / V (Current / Voltage) conversion circuit and a gain conversion circuit; and the gain conversion circuit is controlled by the processor. According to the invention, a certain power supply is applied to a detected circuit board to generate an electric field for inducing a magnetic field, then the magnetic field is scanned by the magnetic head; and the induced magnetic field is converted into induction current for detecting short circuit points. The short circuit detector designed by the invention is convenient and fast to detect short circuit points.

Description

technical field [0001] The invention relates to a circuit board short circuit detector and a detection method thereof, in particular to a short circuit detector based on the principle of electromagnetic induction and a detection method thereof. Background technique [0002] The inexplicable short-circuit detection problems encountered by the hardware design circuit board during debugging, such as short-circuit of power supply and signal short-circuit, are all short-circuit faults. When debugging a circuit board, almost every hardware engineer will encounter this problem: There is a short circuit fault somewhere on the circuit board. Detecting short-circuit points is basically the most time-consuming process in the hardware debugging process, and it is also the most troublesome thing for all hardware engineers. Even experienced engineers are helpless. It is not as traceable as debugging functional circuits. If the short-circuit point cannot be detected, the next step of debu...

AI Technical Summary

Problems solved by technology

When debugging a circuit board, almost every hardware engineer will encounter this problem: there is a short circuit fault somewhere on the circuit board

If the short-circuit point cannot be detected, the next debugging work cannot be carried out, and even the product will be damaged and the loss will be heavy.

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