The Research Of Embedded Drilling Pressure Measurement System

The embedded drilling pressure measurement system is designed by using ADuC848 micro converter and Keil environment, the system has many features such as high precision 16-bit A/D converter, data transmission and storage on real time, the highest run temperature 125℃, low power and high Integration.Using ISP, in-circuit programming is cable of adjusting the system software and application flexibility. This thesis researched the design and implementation of embedded drilling pressure measurement system.The main function of the system is pressure data acquisition, data processing, data storage and transfers etc. Firstly the paper discussed embedded system and measurement while drilling technology and then particularly analyzed the system function and structure, bsased on this, chose the SoC microcontroller ADuC848 for core processing chip, designed power supply circuit, reset circuit, data storage interface circuit, MCU peripheral interface circuit and upper computer communication etc, build the embedded drilling pressure measurement system, described circuit design of each function module and PCB design of system in detail.Then using Keil software design environment programmed system software and realized the system simulation.The system software was designed based on module method and completed the power on initialization subprogram ,data acquisition subprogram ,data storage read-write subprogram ,the serial port communication subprogram and watchdog detecting subprogram. Last hardware system was tested and software system was debugged, then the system was made running test.All the testing and running results achieved the prospective aim of design and given the methods to improve the system.