用于记录内燃机ECU传感器数据的CAN总线数据记录器的研制

Joel Palomino, Eddy Cuty, Alberto Huanachin
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引用次数: 3

摘要

CAN总线协议广泛应用于工业、医疗或汽车等各种技术领域。该协议由博世于20世纪80年代开发,主要用于商用车,通过引入电子控制来减少排放。它通过OBD-II连接器提供来自传感器和诊断代码的数据。许多供应商出售设备和软件工具,以友好的方式读取CAN总线数据,以换取每月的费用。这项工作的目的是开发一种低成本的OBD-II设备,由开源软件控制。为此,开发了一个专用板,使用带有microSD插槽和板上LCD屏幕的Arduino Nano。该设备通过OBD-II连接器收集车辆ECU与MCP2515发出的信息。本文介绍了该板的设计和构造阶段,并进行了验证测试,以确定其作为数据记录器的功能。最后,绘制了从OBD-II数据记录器记录的传感器数据的图表,显示为RPM与速度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of a CAN Bus datalogger for recording sensor data from an internal combustion ECU
The CAN Bus protocol is widely used in various technological areas such as industrial, medical, or automotive. Developed by Bosch in the 1980s, this protocol is predominantly used in commercial vehicles to reduce emissions with the introduction of electronic control. It makes data from sensors and diagnostics codes available through the OBD-II connector. Many vendors sell devices and software tools to read CAN Bus data in a friendly way in exchange for a monthly fee. The aim of this work is to develop a low cost OBD-II device controlled with an open-source software. A dedicated board using an Arduino Nano with a microSD slot and on-board LCD screen was developed for this purpose. This device collects information emitted by a vehicle ECU with the MCP2515 through an OBD-II connector. This article presents the stages of the design and construction of the board, and the validation tests carried out to determine its functionality as a datalogger. Finally, a graph that plots the sensor data recorded from the OBD-II datalogger is presented as RPM vs. speed.
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