Wireless test system for electric vehicle driving

Abstract

The invention discloses a wireless running process test system for an electric vehicle, and relates to an electric performance detection instrument. The system comprises a sensor group, a wireless communication unit, a signal acquisition mechanism and a signal analysis system, wherein the sensor group is arranged on the electric vehicle to be tested and used for acquiring original data in the running process of the electric vehicle to be tested; the wireless communication unit is used for transmitting the original data acquired by the sensor group to the signal acquisition mechanism; the signal acquisition mechanism is used for receiving the original data acquired by the sensor group, processing the original data and storing and displaying the processed data; and the signal analysis system is used for receiving the data transmitted by the signal acquisition mechanism, analyzing the data and outputting test results. By adopting the system, the data in the running process of the medium and large-sized electric vehicle can be exchanged through the wireless communication unit, the data are uniformly acquired, analyzed and recorded, and various test results in the running process of the electric vehicle are output to facilitate the observation of vehicle testers.

Description

technical field [0001] The invention relates to an electric performance testing instrument, in particular to a test and analysis system for the driving process of medium and large electric vehicles such as electric cars, electric trucks, and electric passenger cars. Background technique [0002] For the test of the electric vehicle driving process, when the communication bus protocol is not open, or the signals provided in the communication bus cannot meet the requirements, such as the signal update frequency is low, or the number of signals is insufficient, which brings inconvenience to the test analysis. For medium and large electric vehicles, the body is large, and the sensors are distributed in different parts of the vehicle. It is difficult to connect all the sensors to the test analyzer. In addition, in the process of experimental research, various components and signal lines need to be adjusted frequently, which is very inconvenient and easy to cause failure. [0003...

AI Technical Summary

Problems solved by technology

[0002] For the test of the electric vehicle driving process, when the communication bus protocol is not open, or the signals provided in the communication bus cannot meet the requirements, such as the signal update frequency is low, or the number of signals is insufficient, which brings inconvenience to the test analysis

For medium and large electric vehicles, the body is relatively large, and the sensors are distributed in different parts of the vehicle. It is difficult to connect all the sensors to the test analyzer.

In addition, in the process of experimental research, various components and signal lines need to be adjusted frequently, which is very inconvenient and prone to failure

[0003] There are still some technical rationality problems in the existing electric vehicle driving process test system: (1) Some instruments do not have recording function. Even if there is recording function, the data collection of each instrument is not synchronized, which brings errors to performance analysis

(2) For vehicle performance analysis, signal acquisition is required to have high real-time and sampling frequency, and it is difficult to make all the instruments purchased have this function

(3) Since the sensors and corresponding instruments are distributed in different parts of the vehicle, it is not convenient for the tester to observe at the same time

(4) Since the instruments are not designed for electric vehicles, they are independent of each other, cannot work together, and cannot directly reflect the driving status of the vehicle, such as speed ratio calculation, slope calculation, power and efficiency analysis, etc.

These problems bring difficulties to the performance analysis of electric vehicles during driving

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