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Electric vehicle braking energy recovery system data acquisition method

A technology of braking energy recovery and electric vehicles, applied in signal transmission systems, instruments, etc.

Active Publication Date: 2015-05-13
JIANGSU UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0008] In view of this, the present invention provides a data acquisition method for the braking energy recovery system of electric vehicles to solve the shortcomings of using the existing technology to collect data

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  • Electric vehicle braking energy recovery system data acquisition method
  • Electric vehicle braking energy recovery system data acquisition method
  • Electric vehicle braking energy recovery system data acquisition method

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] combine first figure 1 : The signals collected by the brake recovery controller MCU include wheel speed, vehicle acceleration signal, vehicle brake signal, monitoring circuit temperature signal, bus current signal, super capacitor voltage signal, and the sensor of the brake recovery controller MCU of the lower machine will receive The analog signal is converted into a digital signal by AD and then transmitted to the host computer through the communication interface; each set of data transmitted by the lower computer has its own ID number; the lower computer transmits data at a fixed time interval; the lower computer every fixed time Send a message to the host computer to ensure that the communication is normal.

[0043] second combination figure 2 : ① After the program starts, the upper computer data acquisition system initi...

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Abstract

The invention discloses an electric vehicle braking energy recovery system data acquisition method. When data sending or receiving through arbitrary network interface is detected, sampling is carried out on the sent or received data, the motor bus output current, supercapacitor terminal voltage, electric vehicle wheel rotation speed, and DC-DC circuit duty ratio can be flexibly acquired during electric vehicle braking energy recovery. The invention also has the improvements of real-time data acquisition, real-time diagnosis of fault data, and automatic filtering of fault data transmitted due to interference to a lower computer, each set of data is provided with special flag bit to avoid making mistakes, and each set of data is reserved with an expansion interface to facilitate butt joint with other data. The method provided by the invention also can realize waveform curve online display and off-line reduction of acquired data, and is more convenient and effective than the traditional method that firstly inputs data and then analyzes waveform curve change conditions.

Description

technical field [0001] The invention relates to data acquisition and network communication in the field of electric vehicles, in particular to a data acquisition method for a braking energy recovery system of an electric vehicle. Background technique [0002] At present, there are mainly the following five schemes when collecting and storing electric vehicle braking energy recovery data: [0003] The first solution is that the interface of the data acquisition system is single: only one type of interface of the lower computer can be used for data acquisition, and it cannot be applied to the communication interface of multiple types of lower computers. [0004] The second solution is collection and storage at equal time intervals: the data collection system simply collects real-time data at regular intervals and saves all of these data. [0005] The third scheme is to collect at equal time intervals, but only store data exceeding a certain threshold: this scheme improves the...

Claims

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Application Information

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IPC IPC(8): G08C17/02
Inventor 盘朝奉陈燎陈龙江浩斌谢明维张秀丽刘迎
Owner JIANGSU UNIV
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