On-line fault detection method, device and fault detection circuit of hybrid circuit chip

Abstract

An embodiment of the invention discloses a hybrid circuit chip on-line fault detection method and device and a fault detection circuit. The method is characterized by pre-determining a fault diagnosiscircuit, and embedding the fault diagnosis circuit into a processing circuit where a hybrid circuit chip to be detected is located. The on-line fault detection process comprises the following steps:in the process of normal operation of equipment where the hybrid circuit chip is located, collecting parameter values of preset fault sensitive parameters of the hybrid circuit chip in real time; carrying out feature extraction on the collected parameter value of each fault sensitive parameter to obtain current oscillogram characteristics of each fault sensitive parameter; matching the obtained current oscillogram characteristics of each fault sensitive parameter with a preset correspondence relation between oscillogram characteristics and fault modes to obtain a fault mode corresponding to the current oscillogram characteristics; and according to the obtained fault mode, determining a fault diagnosis result and outputting the result. The method achieves a purpose of detecting online whether the hybrid circuit chip has fault.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to an online fault detection method, device and fault detection circuit of a hybrid circuit chip. Background technique [0002] With the rapid development of large-scale integrated circuits, radio frequency circuits, analog circuits, and digital circuits are integrated into the same chip, which is collectively referred to as SOC (System on Chip, system on chip). This system-on-chip chip can also be called a hybrid circuit. chip. This hybrid circuit chip structure has many advantages, but at the same time it brings a series of challenges to the test and fault detection of the chip. [0003] At present, the fault detection of the hybrid circuit chip is performed offline, that is, the fault detection is performed when the circuit board where the hybrid circuit chip is located is not in normal use. For example, the built-in self-test needs to interrupt the original communi...

AI Technical Summary

Problems solved by technology

This hybrid circuit chip structure has many advantages, but at the same time it brings a series of challenges to the test and fault detection of the chip

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