Small-sized electric control gasoline engine touching-type HMI calibration method based on CAN bus

A technology of CAN bus and calibration method, which is applied in the field of touch-type HMI calibration system for small electronically controlled gasoline engines, and can solve problems such as non-general small gasoline engines

Inactive Publication Date: 2015-12-02
JIANGSU UNIV
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Although these invention patents are also oriented to the calibration system,

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  • Small-sized electric control gasoline engine touching-type HMI calibration method based on CAN bus
  • Small-sized electric control gasoline engine touching-type HMI calibration method based on CAN bus
  • Small-sized electric control gasoline engine touching-type HMI calibration method based on CAN bus

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Embodiment Construction

[0041] The object of the present invention is accomplished through the following technical solutions:

[0042] The development content of the calibration system includes two parts: the calibration software of the upper computer and the ECU calibration module of the lower computer. On the software and hardware platform of the electronic control system of the small gasoline engine, through the "bridge" of the upper and lower computers——CAN bus, real-time and reliable data communication tasks. The upper computer calibration software is developed on the basis of touch-type human-computer interaction equipment (HMI), including three sub-modules of front-end interface, data management and communication control. Among them, the calibration interface provides human-computer interactive access and responds to user operations, data management optimizes global variables and establishes project files, and communication control rationally organizes, sends and receives data, which are the k...

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Abstract

The invention discloses a small-sized electric control gasoline engine touching-type HMI calibration method based on a CAN bus. Calibration system development content comprises an upper host calibration software and a lower host ECU calibration module. A controller local area network (CAN) bus technology is applied on a small-sized gasoline engine electric control system software and hardware platform to achieve communication. The upper host calibration software carries out development with a touching-type man-machine interaction device (HMI) as a carrier. A lower host ECU main chip selects Freescale MC9S12P128. The HMI edition calibration software employs a Kinco company configuration editing software for design, a CANopen custom calibration protocol is applied, and the calibration method has functions of real-time monitoring of operation parameters, fault diagnosis communication, on-line calibration, data storage and the like. CAN communication is the basis of achieving the calibration protocol, redistribution of memory resources is the premise of achieving MAP erasing, and Flash erasing is a main method of achieving a calibration function.

Description

technical field [0001] The invention relates to a CAN bus-based touch-type HMI calibration system for a small electronically controlled gasoline engine, which includes two parts: an upper computer calibration software and a lower computer ECU calibration module. technical background [0002] At present, the electronic control engine based on the table look-up strategy needs to control the engine fuel injection, ignition and other operations according to the MAP. These MAP and control parameters are stored in the Flash of the ECU. After the ECU is powered on, the code and data are copied from the Flash to the RAM. run in. The calibration software can be used to adjust the MAP and control parameters running in the RAM online, and flash the Flash data to obtain better air-fuel ratio control and more precise fuel injection ignition control to improve engine performance, reduce engine emissions, and meet increasingly stringent requirements. Regulatory requirements. [0003] Int...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0243
Inventor 李捷辉毛功平钟光耀
Owner JIANGSU UNIV
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