Title :
Research of Automobile Speed Measuring System Based on Linear CCD
Author :
Guangping, Yu ; Yangen, Xie
Author_Institution :
Inf. Coll., Shenyang Univ. of Technol., Shenyang, China
Abstract :
One automobile speed measuring system based on linear CCD is designed. The linear CCD is the front detecting device, and the MCU processed the CCD output signal using the edge identification arithmetic to achieve automobile accurate localizing on one moment. In this way, the automobile speed can be measured accurately on slope. In this article, the architecture and principle of CCD have been elaborated in detail, one timing sequence driving design method of linear CCD based on the CPLD chip of EPM7128 is described, while the principle and composition of the speed measuring system are introduced as well. Through experiments, the speed measuring range of the system is 5 m/h~160 km/h and the error is less than 0.5 km/h. Right now this system has already been successfully used as an examine system for drivers driving with a ramp. It has been proved that it is accurate with sensitive responsiveness.
Keywords :
charge-coupled devices; edge detection; programmable logic devices; velocity measurement; CCD output signal; CPLD chip; EPM7128; MCU; automobile accurate localizing; automobile speed measuring system; edge identification arithmetic; front detecting device; linear CCD; timing sequence driving design method; Automobiles; Charge coupled devices; Coils; Doppler radar; Laser radar; Magnetic field measurement; Semiconductor device measurement; Sensor arrays; Ultrasonic variables measurement; Velocity measurement; Automobile Speed Measuring; Edge Identification; Linear CCD; MCU; Timing Sequence Driving;
Conference_Titel :
Control, Automation and Systems Engineering, 2009. CASE 2009. IITA International Conference on
Conference_Location :
Zhangjiajie
Print_ISBN :
978-0-7695-3728-3
DOI :
10.1109/CASE.2009.64
