CPLD Based Multi-sensor Data Acquisition Board Design And Implimetation

With the extensive application of wireless sensor networks and rapiddevelopment of programmable processor technology, such as CPLD and FPGA inrecent years, smart sensor data acquisition has become the focus of people’s studies.Nowadays, the American Association of Electronics Engineers organization alsolaunched for the future development of the smart sensor specification, which is todevelop a series of specification of the interface definition from the sensor to the datacollection. As the wireless sensor network is more used in military, environmentalmonitoring and medical field, so this puts forward new demands of the speed of dataacquisition, the number of sensor and real-time. So this paper studied the latest CPLDField Programmable technology as well as IEEE1451smart sensor standards,designed and implemented data acquisition board for wireless sensor networks, tomeet the system reliability and real-time requirements.This paper did research in wireless sensor data collection method as well asgeneral data acquisition process, theory and methods. Finally, it summed up a generalmodel suitable for wireless sensor data collection standards. By designed the everypart circuit of different functions, this design finished a new sensor data acquisitionboard based CPLD processer from schematic design to PCB printed circuit boarddrawing. In order to verify the performance of the system, a water environmentmonitoring project has been added to this prototype system as an application platform.In order to adapt to the needs of the project appropriate, some sensors were replaced.Through the study of the theory of knowledge and technology, by combiningindependent design of data acquisition card to system verification, this paper finallycompleted the transformation process from theory to practice. With theimplementation of the CPLD field programmable chip and intelligent sensor ofIEEE1451protocol, this paper did not only make a new attempt to the intelligent datacollection in wireless sensor networks, but also provided a new model of reference forthe development of the next generation of intelligent sensor.