Study On The Signal Acquisition And Control Technology In The Single Camera Precision Target

The firing precision can be verified by the test of firing dispersion has great significance in the field of weapon tests. The existing methods of measuring the firing dispersion were summa-rized. And then the signal acquisition and control circuit of the single linear CCD camera precision target measurement system is designed. The corresponding circuit hardware and program has been designed, which are verified by tests.Firstly, the measuring principle of single linear array CCD camera is studied, and then the overall measurement scheme of the single linear array CCD camera precision target is put forw-ard, including the scheme of both the lens type light screen for trigger and the delay trigger control card.Secondly, according to the design scheme of the lens type light screen and the trigger control system, the hardware design of signal processing circuit for lens type screen, the control software design of the lens style curtains lower machine,the hardware circuit design of trigger control card, and the logic circuit design of trigger control card are designed. The lens-type light screen signal processing circuit has a status monitoring, programmable amplification and other functions. Beside a simple gain control algorithms is designed. The trigger control card can adjust signal input conditioning circuit through the program, and receive various amplitude screen light trigger signals. Moreover, a kind of multi-byte parameter configuration logic circuit is designed on the base of UART asynchronous serial communications. The initial configuration for trigger control card for each logic module is completed.Finally, lens style curtains prototypes are built. The functions experiments of lens style curtains and trigger control card for each module independently is established. And the entire system in accordance with single-camera accuracy target test system was set up to complete the signal acquisition. Experiments show that the performance of lens type light screen is good, the function of the pre-coupled amplifier circuit is working normally, and the function of the multi-byte serial data configuration logic circuit with simple logic and less resource is normal.