The Design And Implementation Of Virtual Instruments Of Electric Cars

Driving process, if the driver wants to know the vehicle driving some of the basicparameters, must be done through vehicle instrument display.But early vehicle instrument ismechanical, this kind of instrument exists many shortcomings, such as the content of the tip,small ICONS, slow response, less easy to damage, etc.In recent years, modern technology hasdeveloped by leaps and bounds in the electronics industry, the modern automobile instrumentsystem upgrade is more rapid, mechanical and electrical analog instrument gradually replacedthe traditional mechanical instrument, relative mechanical instrument, electrical andmechanical simulation instrument has a fast response, good accuracy, durability and othercharacteristics.But the mechanical and electrical analog meter digital level is not high, only ina few places adopted digital design.In order to solve the shortage of the traditional instrument,virtual instrument will be in the future become the main development direction of automotiveinstrument, virtual instrument in the field of research and development is particularly showsthe good practical significance and economic value, and has good prospects for development.Powered electric vehicles refers to vehicle power supply, by the rotation of the motorvehicle to provide motivation.Electric vehicle is mainly composed of motor, controller,battery management system.Due to the particularity of electric vehicles, communicationwiring harness extremely complex, and difficult maintenance check line, we will CAN bustechnology is introduced on the design.Data acquisition module CAN be in a timely mannerto electric car mileage, speed, alarm prompt, motor speed, mileage and battery temperatureand other kinds of data acquisition, by CAN bus send these information to the onboardcomputer and carry on the analysis of the related processing.CAN bus CAN not onlyreal-time transmission of data, and speed.Can also share all data of the node to a differentcontroller, to strengthen the information sharing between the electric vehicles every majorcontroller.This topic through to the electric vehicle virtual instrument development presentsituation and future prospects for research, put forward the principle of virtual instrument of reasonable design, formulate a set of more comprehensive design, thus reasonable division ofelectric vehicle virtual instrument system module, the grind degrees TREK-753on-boardcomputer and Visual Studio.NET technology to realize system model of expectation.TREK-753of the on-board computer not only for CAN bus data analysis processing,will also calculate good data displayed by the LCD screen, electric vehicle virtual instrumentCAN through the touch screen man-machine interaction, TREK to archive-753CAN also beall kinds of data, so that as a reference when the late maintenance upgrade.In the process ofdriving, if found abnormal data, the screen will be displayed in the scarlet letter out alarminformation, and send out alarm sound, remind consumer to abnormalities in check.This system mainly includes: data acquisition module, data communication module, datacalculation module, data record module, fault diagnosis module and hardware failuremodule.Through the development and debugging, realize the basic function of the electricvehicle virtual instrument, data from the data module through calculation, record and displayon the screen, to achieve the virtualization digital electric meter.Through the strict test, it is concluded that the virtual instrument system model in thedisplay of information, timely, accurate and reliable transmission, rich in content andcharacteristics of convenient operation, and application scope is broad, with largerdevelopment space.