| Reconstruction often classified into three types, including reconfigurable software, hardware and system. Among them, the reconfigurable software has become a consensus a common sense, and widely used in various kinds of application. With the development of microelectronics technology and computer technology, software and hardware are becoming increasingly blurred in the traditional sense, and the reconfigurable technology based on chip level has become the research hot spot. Combining ideals of hardware into software and software into hardware circuit, through FPGA for reconstruction of the processing resources, can enhance the processing speed and performance, and have been a special focus on image processing, etc. As well as the evolvable hardware designed with reconfigurable technology, use a single resource to adapt to a variety of functions, also have formed a unique advantage in space technology, etc. Therefore, research on reconfigurable technology not only has academic value, but also has important application significance.In industrial field, temperature signal detection accounted for more than 70% all the detection signals. In this paper, temperature transmitter as the carrier and the object, research on reconfigurable temperature transmitter design and reconstruction method, to achieve a single hardware to satisfy a variety type of temperature sensors, and enhance the reusability and swap capacity, and increase its convenience. In this study, firstly, make a design of automatic identification method and reconstruction file’s storage structure. Then, using the ideal of static reconfigurable technology, develop a reconfigurable temperature transmitter which can automatically reconfiguration. Further, use the ideal of dynamical partial reconfigurable technology to improve the logic resource utilization, shorten reconstruction time and improve equipment availability. This paper studies on these issues and mainly completes the follows tasks:1. According to the type of temperature sensor accessing transmitter, temperature transmitter loads different reconstruction files into internal logic, to change the reconfigurable device internal hardware circuit. Study the identification method of the temperature sensor firstly. Aiming at the thermal resistance temperature sensor commonly used in industry, identifies include connection mode and material type of sensor. Improve the existing temperature transmitter structure, and then put forward the temperature resistance characteristic difference reasoning method which can automatically identify sensor connection mode and sensor material. In process of reconstructing temperature transmitter, reconstruction files’structure has a vital impact on external memory utilization rate and the speed of accessing. So design an efficient storage structure to hold the reconstruction files.2. In order to solve the shortage of existing temperature transmitter, using static reconfigurable technology design temperature transmitter. Temperature transmitter need to take the initiative reconfiguration 2 times with four steps:reconstruction identification, reconstruction plan, reconstruction deployment, reconstruction evaluation, so that the temperature transmitter can adaptive the type of temperature sensor. As we work on design, using a dedicated EDA tools to create the reconstruction files library, according to the available temperature sensor. Within the four steps of static reconstruction, a detail design of reconstruction identification method, reconstruction plan strategy, reconstruction deployment method, reconstruction evaluation strategy is presented. Finally, verify the effectiveness of this design on the development board.3. Due to the static reconfigurable technology can only reconfigure entire FPGA offline, the reconstruction file is larger. Using dynamical partial reconfigurable technology improve the system performance about resource utilization and reconfiguration time. Replace the FPGA by a device with reconfigurable capacity on the static reconfigurable temperature transmitter. Build a system on programmable chip on dynamical partial reconfigurable temperature transmitter, to replace the microprocessors and reconfigurable devices. According to the characteristics of dynamic partial reconfigurable technology, partition the reconfigurable region, and make a wrapper model and a freeze model, and build a partial reconfigurable host, and build a partial reconfigurable files library, and then reconfigure by the four steps of reconfiguration. Finally, verify the effectiveness of this design on a platform. |
