The Design And Devices Of Laser Elocmeter Based On Compensative Algorithm Of Speed

With the rapid development of transportation, automotive overloading is becoming more and more serious. At present, our country's road transport vehicle overloading is extremely widespread .In the serious areas, almost all freight vehicles have varying degrees of overloading. Overloading of vehicles is harmful to traffic safety, transportation, vehicle production order and road and bridge infrastructure. It is an important means for effective suppression of vehicles overloading to carry out weight charges, key technology of which is the dynamic weighing of vehicles. The study on dynamic weighing technology is highly valuable not only on academic, but also greater on society and economy. Dynamic weighing technology provides much convenience in transfinite transport management system, but the measurement accuracy of which has been a subject worthy of study.In this paper, the study is to pose a compensative algorithm of speed for advancing the precision of dynamic weighing system, and to design a Speed Sensor, which supports the Dynamic weighing system and improve measurement accuracy of it .Its main role is to provide the instantaneous of vehicles through the weighing device for dynamic weighing system, and increase the measurement accuracy of the entire system using this velocity as the speed compensation of weighing algorithm. The Speed sensor makes use of the principles of the light curtain and MCU controlling technology, which mainly uses light curtain By the composition of the laser emitter and receiver components on external sensor device and the chip AT89S52 on control circuit part.This article first gives a brief introduction about technology application and development of Dynamic weighing, and shows the significance and role to improve the accuracy of dynamic weighing. Then that leads to the Speed Sensor theoretical research background and practical topics significance.Followed by presentation and analysis of the current speed Detection and compensative algorithm of speed, this article leads to the theoretical background and design ideas of automobile velocimetry sensors designed in this paper after comparison, and introduces working principle, hardware and functional structure of this car Speed Sensor.Then according to the actual needs, the hardware circuit is designed, including five parts: the transmitter module, receiver module, single-chip peripheral control module, data display and communication module. Then the paper introduced the functions of various hardware circuit parts in the system, as well as described the working principle and performance parameters of the hardware circuit. Finally, we test and analysis the designed device. From the current testing results, vehicle Speed sensor designed in this article meets the basic design needs. Of course, the vehicle dynamic weighing system involves many aspects, multi-disciplinary knowledge. There are many difficulties at the present study, and a wide gap from the full application of the commercialization .But I believe that the vehicle speed sensor also have a light prospect.