Diagnostic instrument for EPS controller

Abstract

The invention discloses a diagnostic instrument for an EPS controller. The diagnostic instrument for the EPS controller comprises a display unit, a power source unit, a diagnosis control unit and a 5V switch; the power source unit comprises a 12V power source, a 12V-to-5V conversion module, a 3.7V charging management module, 3.7V-to-5V conversion module, a 3.7V-to-12V conversion module and a 3.7V battery; and the diagnostic control unit comprises a K line / LIN line communication module, an CAN line communication module, an MCU module, a voltage diagnosis module, a voltage detection module, an IG signal module and a diagnostic interface. In the diagnostic instrument for the EPS controller of the present invention is compatible with a production line and the different use conditions of actual vehicles. Production line calibration diagnosis and actual vehicle calibration diagnosis are performed on one diagnostic instrument. The diagnostic instrument is a special diagnostic instrument designed according to the characteristics of the EPS controller. The diagnostic instrument for the EPS controller has the advantages of convenient equipment operation, low cost, small size and portable convenience.

Description

technical field [0001] The invention relates to the technical field of diagnostic equipment, in particular to an EPS controller diagnostic instrument. Background technique [0002] Existing diagnostic instruments generally diagnose the diagnosis of various electronic devices in the vehicle. In the case of a real vehicle, the EPS controller is diagnosed through OBD. After the vehicle is ignited, the EPS controller is diagnosed, mainly for current status detection and historical fault codes There are few functions for reading and parameter calibration; in the case of a production line, the production equipment dedicated to the production line is generally used for calibration and diagnosis. [0003] The compatibility of the existing diagnostic equipment with working conditions is not good, and it cannot meet the requirements of production line calibration diagnosis and real vehicle calibration diagnosis on one diagnostic instrument; and it is not specifically for EPS controlle...

AI Technical Summary

Problems solved by technology

[0003] The compatibility of the existing diagnostic equipment with working conditions is not good, and it cannot meet the requirements of production line calibration diagnosis and real vehicle calibration diagnosis on one diagnostic instrument; and it is not specifically for EPS controllers, with many integrated functions, inconvenient operation, and high cost. Higher, fewer parameters for diagnosis and calibration, not suitable for situations where EPS controller calibration and diagnosis require higher requirements

In the actual vehicle calibration, the EPS controller can only be diagnosed after the vehicle is ignited. When the vehicle is ignited, it may occur that the EPS controller is diagnosed or calibrated during the driving of the vehicle. If the parameter settings are wrong, steering may occur. The risk of out of control, the safety is not very good; in the case of the production line, generally use the equipment dedicated to the production line for calibration and diagnosis, the equipment is large in size and inconvenient to carry or move

[0004] Moreover, the diagnostic instrument integrates multiple functions, which leads to inconvenient operation and high cost; the diagnostic instrument has limited resources and many integrated functions, so it can only perform a rough diagnosis; the diagnostic instrument that is not specialized in diagnosing EPS controllers cannot be compatible with production conditions and Real vehicle condition

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