Research and Development of FPGA Navigation Control Board Test System

Inertial navigation system in positioning technology has been established in the mid-20thcentury, and it has been mainly used in aerospace, aviation, marine areas, especially in themilitary field. The navigation control board is the key of the SINS, so the test andacceptance check for various functions of the control board is very important. The purpose ofthe development of FPGA navigation control board test system is to test and accept thenavigation Master board veneer which can auto-complete the detection of the hardwaredevices and internal algorithms of navigation Master board veneer, and improve efficiencygreatly. Test results can be shown in PC and observed easily with the help of test equipmentRS232serial port.This test system design is divided into two aspects including hardware and software. Thehardware system are including main circuit module, pulse choose module, temperature choosemodule, serial protocol conversion module, WGAVI and power module. Altera company’sEP3C25Q240C8FPGA of cyclone III series has been chosen as controller in main module,the transform of RS232/RS422has been achieved by protocol conversion devices MAX3160in serial protocol conversion module, The isolation between FPGA and peripheral circuit hasbeen achieved by Light coupling isolation module HCPL0631in WGAVI and FPGA hasbeen protected with the help of Hex inverse schmidt trigger74HC1D and eight phase withthree-state buffers74ALVC244. The software system are including two parts. One isHardware logical design of FPGA which is used verilog language, the main function of it aresignal generation and system control. Another is DSP which is used C language, the mainpurpose of it is testing function of Navigation control board veneer. With the help of hardwareand software, the test work of whole system was done and result will be given in this paper.