Based On The ARM Small Digital Flight Parameters Test System Design

In this paper,a none-stop ETC system on speedway with ZigBee technology was presented,and introduce it in detail.Introduced measuring principle,hardware implementation process,as well as software programming in Dynamic Weighing System,dynamic weighing system is an important component of the system,as we know,the fee is based on the first volume under the load of vehicles to a net charge. Dynamic Weighing modules was composed of the master board and the slave board.There are six slave connected to the master board.the slave board module was composed of ADC module,MCU module,programming interface,temperature sensor modules,power modules etc.the slave board measure the pressure of the sensor directly.Dynamic Weighing is a complex process,In this issue we are based vehicles with the sensor output and speed of vehicles fitted to identify approximate relationship to show the relationship between stress and weight.Of course,this relationship is dependent on the specific system.ZigBee wireless sensor networks is very important part of the none-stop ETC system.It is responsible for the wireless transmission of data,and vehicle positioning and vehicle identification,and so on.ZigBee wireless sensor networks are dynamic ad-hoc network,the dynamic is very suitable for the vehicles accession and leaving from the network. Wireless sensor network node module is composed of power supply modules,LCD display module,ZigBee wireless module,keyboard,and several other components.It should be noted that none-stop ETC system is the main purpose of the circumstances that without the vehicle stoppingThe experimental results show that the system designed is rational,and effective,with better real-time performance and reliability of the system is basically designed to meet the need.