Research And Implementation Of Wireless Display Meter And Remote Control System For Construction Machinery

The applications of Construction Machineries, which cover all fields of the national economy, have improved operational efficiencies in some important areas of national economy such as railway transport, highway transport, port logistics, coal mining, infrastructure development, and so on.With the continued large-scale and intelligent applications of Engineering Machinery, as well as with the increased rotary and long-range operations of driving cab, it is that the traditional way of transmitting types of signals by cable does result in more faults so as to affect the transmission reliability, and this way has become more and more unable to meet needs. However, in recent years, with the rapid development of radio frequency (RF) communication technology, a new way which can effectively eliminate the inherent drawbacks of cable transmission and can ensure the quality and reliability data transmission is used for driving cab instruments display wirelessly kinds of signals.Here, aiming at the telecommunication problems of instrument display in driver cab for diverse signals in different places and remote control, the author proposed a scheme for realizing wireless data communication based on RF trans -ceiver of nRF2401, and completed the system design and prototypes development.Based on analysis of short-rang RF communications and its key technologies, a way how to design the system's prototypes on software and hardware was given have. Morever, the author improves the reliability of the system by doing spread spectrum protocol of adaptive frequency-hopping software to avoid signal interference and data loss, enhances the security of the system by doing authentic–ation algorithm based on address to stop misoperation, and increases the applicability of the system by doing design UART and USB dual-interfaces to solve single interface issues of the traditional host computer communication.Of course, many relevant tests on HZB908A-JAC and prototypes have show that this system can transmit effectively within 100 meters, as well as with some advantages as low power consumption, anti-interference, easy to carry and so on.