The Test System Design Of Missile-embedded Computer Based On LabVIEW

As the core of missile flight control system, the performance of missile-embeded computer will directly affect the precision strike capability of missile. Therefore a test platform should be built for the comprehensive test of missile-embeded computer, which has the characterastic of strong expansibility, short development cycle and good reliability. In order to test the validity of a certain type missile-embeded computer and improve the efficiency of its development, an automatic test system based on LabVIEW is designed.This system cannot only accurately complete for the testing three working modes of full function, recorder and excitation source, but also take the advantage of the rich signal processing module of LabVIEW, which can complete the function of system initialization,parameter configuration, signal surveillance, data acquisition and processing, data storage and so on consistently and efficiently.This thesis first introduces the development status of the virtual instruments, and then proposes the overall design of the system according to the analysis of system requirements.The key technology used in the design is also introduced, which includes multithreading and database. Then the hardware interface card used in the system is introduced and design ideas and implementation principle of the key circuit board is introduced in detail. Again the function, design ideas and the matters needing attention of each software module of the system are introduced, which especially illustrates the implementation method of database application, hardware trigger, dynamic call and user-defined control in detail. Finally, the system function is verified from the aspect of hardware and software. For the hardware, it mainly tests the simulation output of thermal battery, A/D channel, acquisition and output of analog signal and the communication of digital signal. And on the aspect of software, three working modes of the system are carried for strict test, which especially introduces the test offull function mode in detail.Test result shows that the system has the advantages of stable working, easy operation and strong expansibility, which has been applied for practical production and improved the development efficiency of the missile-embeded computer greatly.