|
This issue is to provide a reliable , efficient , portable , special test equipment to a telemetry system development and production of digital converter . With the rapid development of embedded technology , will be integrated into a single circuit board control computer functions and FPGA logic control all functions of the original digital converter test bed , it improve the reliability , reduce the size , power consumption reduced. Following : First , on the basis of the traditional test equipment , its control of the computer part to improve the ARM microprocessor control computer replacement , improvements to upgrade the hardware , power consumption of the test station . After analysis tasks given technical indicators , embedded test station design : the main control part of the system to the ARM microprocessor and FPGA , ARM microprocessor to achieve all the features of the original computer , FPGA test system logic control and interface timing . Secondly, the introduction of embedded test station communication interface hardware circuit , and realized in FPGA the PCM stops , asynchronous serial data transmit and receive data compiled frame . Communications interface between USB, TF card next introduced ARM microprocessor , LCD peripheral interface circuit , microprocessor and FPGA implementation method selection and communication ; Finally, the operating system for embedded test bench , select the operating system migration and part of the drive to write . Upgraded embedded test bench completed the following functions : analog to generate a bit of control , computer word , high-precision control instructions ; sending and receiving data , comparative analysis of the send and receive data , and generate test reports . And target of the work than the traditional test bench , the embedded test bench can be successfully completed tasks of traditional test sets , and the smaller size , lower power consumption , reduce overall system costs and maintenance costs .
|