四轮定位仪基本知识(国外英文资料).doc

四轮定位仪基本知识(国外英文资料) Basic knowledge of four wheel position finder 1. Classification of four wheel alignment technologies 1, by means of communication: A, without communication B, wired communication C and infrared wireless communication D, Bluetooth wireless communication 2, according to measurement methods: A, pull type angular displacement sensor + gravity hammer inclinometer B, pull angle displacement sensor + electronic tilt sensor C, laser and photoelectric receiving board + electronic inclination sensor D, infrared and PSD+ electronic tilt sensor E, infrared and CCD+ electronic tilt sensor F, infrared and CMOS image sensors G and 3D technologies (using array CCD) 3, press show mode: A, the sensor head is displayed directly (usually LCD screen) B, digital display C, computer display Two. Basic concepts 1, host computer: that is, data processing, display and output of the computer, this computer is the four wheel positioning device control center, the operator want to complete what kind of operation, are through the control of the computer to achieve. For the digital display of the four wheel positioning device, the computer is usually developed by the manufacturer using a single board computer development. For the computer display of the four wheel positioning device, the upper computer refers to the popular PC machine in the market. 2, lower computer: that is what we usually call the sensor head, it is the entire four wheel locator core components, are produced by the manufacturers research and development, production. The actual sense, computer is a computer, but its function is relatively simple, it contains CPU, memory, control unit, under the software coordination, complete PC orders. 3 、 pull type angular displacement sensor: the sensor is actually a precision variable resistance, under the driving of the shaft, to produce voltage changes, through analog to digital conversion, forming a relative rotation angle. 4, laser is a new light source, it is the esse