Fault information diagnosis system

Abstract

The invention relates to a fault information diagnosis system. The fault information diagnosis system comprises a circuit board. The circuit board comprises a core layer, a metal layer and an electrostatic protective structure. The core layer is provided with a first surface and a second surface. The metal layer is arranged at the first surface of the core layer and is provided with multiple lead wires. The electrostatic protective structure comprises a first portion, a second portion and a connecting portion. The first portion is arranged on the first surface and is isolated from the lead wires, the first portion is electrically coupled to at least one lead wire segment, the second portion is arranged on the second surface, and the connecting portion is arranged between the first portion and the second portion and is electrically connected with the first portion and the second portion to enable the electrostatic protective structure to be of an annular structure. According to the invention, through arranging the electrostatic protective structure of the annular metal structure on the circuit board, the interference phenomenon generated when electrostatic discharge is generated on the circuit board is inhibited, and circuit components in a circuit structure are protected from being interfered or damaged.

Description

technical field [0001] The invention relates to a fault information diagnosis system. Background technique [0002] At present, a fault information diagnosis system is usually installed on a car, usually called an ECU, which is used to detect various parameters of the car engine, thereby judging whether there is a fault. ECU usually includes a circuit board with various electrical components and microcontrollers. When electrostatic discharge occurs, these electrical components are often affected by the sudden large current generated by electrostatic discharge, resulting in unstable work and even damage. [0003] In the prior art, generally corresponding electronic components are arranged on paths where electrostatic discharge may be generated to divert energy generated during electrostatic discharge. These electronic components are expensive, resulting in an increase in the manufacturing cost of the product; in addition, there is also the use of installing a cutting-edge d...

AI Technical Summary

Problems solved by technology

These electronic components are expensive, resulting in an increase in the manufacturing cost of the product; in addition, there is also the use of installing a cutting-edge discharge circuit on the electrostatic discharge path to discharge the energy generated during electrostatic discharge.

However, the tip discharge circuit is arranged on each path where electrostatic discharge may occur, which increases the area of ​​the circuit board and increases the manufacturing cost.

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