Active vehicle-mounted running state monitoring and fault forecasting method

Abstract

The invention discloses an active vehicle-mounted running state monitoring and fault forecasting method which comprises the following steps that: firstly, a fault forecasting system comprising a fault model database is obtained, and the fault model database comprises a corresponding relation between fault information of a to-be-monitored fault type and instantaneous rotating speed change characteristics; during use, in the running process of a real vehicle, rotating speed signals of a rotating speed sensor installed on the real vehicle are collected in real time or at regular intervals through the data collection module, rotating speed conversion is carried out on the rotating speed signals, and possible instantaneous rotating speed change characteristics are extracted one by one according to the types of the instantaneous rotating speed change characteristics in the fault model database; and corresponding fault information is matched in the fault model database according to the instantaneous rotating speed change characteristics for forecasting. The running state of the automobile can be actively monitored, and the fault is pre-judged according to the running state, so that a driver is prompted to process the fault as soon as possible, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle detection, in particular to an active on-vehicle running state monitoring and fault forecasting method. Background technique [0002] Early car fault diagnosis is mainly aimed at the problems that affect the normal use of the car (such as the engine cannot be started, or the power is insufficient, etc.), and the source of the problem is determined by dismantling and inspecting the car engine. With the development of science and technology, the fault diagnosis of automobiles has already developed to monitor the real-time running status of automobiles through a series of precision sensors, such as monitoring engine temperature through temperature sensors, tire pressure through tire pressure sensors, and engine oil pressure through pressure sensors, etc. Etc., when the oil temperature is too high, the intake pump oil pressure is insufficient and other problems occur during the driving of the car, the...

AI Technical Summary

Problems solved by technology

[0003] However, the function of this kind of monitoring system is relatively basic, it can only show whether there is a fault state at present, roughly judge the running state of the car, and cannot further identify the fault state

Moreover, the existing monitoring system usually only passively prompts the driver when the car failure problem is serious

The car transmission system is the core of the vehicle form. Once the car shows a fault status related to the transmission system, it is usually accompanied by a more serious fault, and the maintenance cost is relatively high.

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