Vehicle-mounted fault detection and early warning system

Abstract

A vehicle-mounted fault detection and early warning system disclosed by the present invention mainly comprises a vehicle-mounted MCU, an on-board diagnostics (OBD) system interface, an ABS signal acquisition module, an automatic transmission connection module, a car light data acquisition module, a voice communication module and a 4S store detection, maintenance and service platform. The vehicle-mounted fault detection and early warning system of the present invention can accurately detect the vehicle faults and the concrete faulted parts and positions, alarms the faults, does not need to the professional instruments, does not require the technology levels for overhauling personnel, is convenient to carry, and can timely troubleshoot the faults which are not observed by the operators easily, but possibly cause the serious consequences.

Description

technical field [0001] The invention relates to a vehicle-mounted system, in particular to a vehicle-mounted fault detection and early warning system. Background technique [0002] When a car needs to be detected when a fault occurs, special instruments such as a fault diagnosis instrument are often used, which has defects such as high requirements for the technical level of the maintenance personnel, inconvenient portability, and high cost. [0003] And some faults on the car are not easy to be noticed by people, and may cause serious consequences when found, such as ABS break down, car lights are damaged or the brightness is not enough. [0004] OBD (On-Board Diagnostics, on-board automatic diagnosis system) is a software installed in the car ECU, which is used for car fault diagnosis and pollution exceeding the standard, and informs the driver to repair as soon as possible. The OBD of the prior art can only monitor the car electronic control system 70% to 80% of the faul...

AI Technical Summary

Problems solved by technology

[0002] When a car needs to be detected when a fault occurs, special instruments such as a fault diagnostic instrument are often used, which has defects such as high requirements for the technical level of the maintenance personnel, inconvenient portability, and high cost.

[0003] Some faults on the car are not easy to be noticed by people, and may cause serious consequences when they are discovered, such as ABS failure, damage to car lights or insufficient brightness, etc.

[0004] OBD (On-Board Diagnostics, on-board automatic diagnosis system) is a software installed in the car ECU, which is used for car fault diagnosis and pollution exceeding the standard, and informs the driver to repair as soon as possible. The OBD of the prior art can only monitor the car electronic control system 70% to 80% of the faults in the car, its reliability is also affected by the operating environment of the car. Under severe operating conditions and abnormal working environments, the system may make mistakes and generate wrong fault codes

When the electronic control system connected to the OBD fails, the OBD will store the fault in the form of a code in the internal RAM random access memory, and the stored fault code needs to be read by a special decoder during maintenance, which brings great inconvenience to the actual operation. Inconvenience

[0005] The OBD of the prior art also has defects such as no display function, no real-time networking of the measured data, no remote diagnosis, etc.

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