Design And Implementation Of Data Acquisition And Control System Based On SPCE061A

SPCE061A is a kind of 16-bit microcontroller withμ'nSP^TM kernel,the microcontroller can be achieved not only the basic control functions and also has some DSP functions.The chip embedded 32K FLASH ROM and 2K bytes of SRAM, but also integrates ADC,DAC,AGC amplifier circuit and so on,it is a powerful SOC chip,in order to handle complex arithmetic operations also added a hardware multiplier,n items to carry out operations within the plot.The maximum system clock can achieve 49MHz,higher processing speed can be very easy to make SPCE061A fast complex arithmetic logic operations,and it is a better choice in data acquisition system design.In this paper,the single-chip real-time data acquisition and control systems have been studied from the aspects of hardware and software programming,analyzed the structure and function of the overall system,given the module circuit design and analysis on the hardware platform,and realize the system software program design. The hardware includes SPCE061A single-chip microcomputer and peripheral circuits, sensor amplifying circuit,power driver circuit,Keystroke and digital display circuit and embedded S3C2440 development board,researched the key issues in the process of hardware design,completed part of the hardware circuit design and physical hardware assembly and debugging.In the software design,this paper mainly expounds the principle of the PID control,realization of digital PID and single-chip temperature control structure, analyzes theμC/OS-Ⅱoperating system structure,and gives the main contents of theμC/OS-Ⅱsystem transplantation.And then designs the main processes of the system software,applied the PID control technology and WindowsCE to the data acquisition system,realize the design of the temperature A/D conversion processing,keyboard control,voice playing,digital PID calculation,relay control,SPCE061A serial transmission,the embedded database and PC application program.PC receives data by using visual C++ programming design,graphics interface includes serial port settings,function buttons,real-time temperature display and the curve output window; embedded database application is designed by using VS2008.Finally,the design of hardware and software were tested,testing results showed that the success running of the designed software in the hardware system.The data collected by the sensor can be displayed accurately,PC could correctly observed temperature curve,and embedded ARM platform could receive serial data and restore temperature in the embedded database.The system achieves the design requirements.It is expected that the comprehensive application of the about SPCE061A's AD, Timer,UART and many other resources has played an outstanding performance.