Research On Wheel Alignment System Based On Linux

Four wheel alignment is a special equipment that measures wheel alignment parameters,it is through the establishment of the geometric model of the wheel toe,camber,kingpin angle,caster angle,thrust angle,wheelbase and poor steering wheel before the opening angle and orientation parameters for testing.Existing domestic four wheel alignment has bulky,low accuracy,the use of inconvenient and other shortcomings.So,this paper is focus on the wheel alignment precision,small and easy for use,developing a four wheel alignment equipment for testing toe-in and toe-out,camber,SAL,caster and so on,using micro-computer to achieve small of wheel alignment,and through experiments on different measurement model of four wheel alignment for evaluating.The content as follows:First,it describes the effect of the four wheel alignment and the important parameters of four wheel parameters contained;Second,according to the needs of the measured data,Selecting wheel alignment sensors and sensor controller(LPC2132),through the LPC2132 realizes the control of sensor and reading and sending signal,etc;Third,using S3C2440A as the total control of Four wheel alignment.Its role is to control the sensor controller,to operate and deal with indirect measurement of the number of data,and to achieve human-machine communication by driving the display and touchpad;Fourth,using experimental setup to complete the calibration of tilt sensor,meeting the needs of measurement accuracy of the wheel alignment.As using a large number of microprocessors and integrated circuits,it makes that the wheel alignment achieves the purpose of miniaturization.Users can hand-held controller of wheel alignment,achieving the purposes that adjusting wheel profile while displaying measurement results.