Signal conversion collecting device for test platform of motor drive system of electric automobile

Abstract

The invention provides a device for converting and collecting signals on a test platform of a motor driving system of an electric car, and the device is provided with a direct current dynamic line and a high-frequency alternating current line, a current sensor is arranged on the direct current dynamic line and the high-frequency alternating current line, a voltage sensor and a signal converting module are arranged between two paths of the direct current dynamic line and between any two phases of the high-frequency alternating current line, and the tested parameters of the current sensor and the voltage sensor are converted to uniform standard signals which are collected and processed. The interfaces of the device are uniform, and the actual physical quality can adopt standard physical interfaces to realize rapid connection of the testing system. The tested signals are processed in real time by the signal converting module which is arranged in the system and are programmed into specific CAN bus signals and wireless signals, thus being convenient for data receiving and processing, realizing high speed, high efficiency and convenience of data transmission and being beneficial to remote control and data transmission of the system.

Description

technical field [0001] The invention relates to the field of electric vehicle motor drive system testing, in particular to a signal conversion and acquisition device for a test platform of the electric vehicle motor drive system. Background technique [0002] The testing work of electric vehicle motor drive system provides a strong technical support for the development of electric vehicles, but the current test platform for the motor drive system has different signal conversions and inconsistent data formats. There are direct voltage and current signals, as well as 485 bus, Various forms such as LIN bus and Ethernet bus cannot achieve better data sharing, and communication is difficult. At the same time, the environment of the test site is harsh, and the complicated signal lines are likely to cause test failures. In the actual test process, due to too many direct cable connections, it is easy to connect high-voltage signals to the man-machine interface, resulting in persona...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an electric vehicle motor drive system that overcomes the shortcomings of complex structure and inconsistent data signals in the test of the electric vehicle motor drive system, and can realize the unification, convenience and wireless of the test of the motor drive system Test platform signal conversion acquisition device

Images