Light Screen Target Calibrator Based on FPGA and STM32
Light screen target is an instrument that can measure the flight speed of projectiles.It is necessary for the verification and calibration of light screen target to ensure the accuracy and reliability of test data.In response to the problems of complicated op-eration,high cost,weak specificity,and low measurement efficiency in current calibration and testing equipment for light screen tar-gets,this paper designed a portable light screen target calibration instrument based on FPGA and STM 32,proposed an overall scheme for light screen target calibration instrument,analyzed and designed the synchronous and asynchronous calibration signals,introduced the principle of direct digital synthesizer(DDS)technology,designed the FPGA,STM32,DA module hardware circuits,optoelec-tronic fixtures,serial touch screen and battery module,and completed the selection of corresponding chips and devices;The FPGA was developed on the LabVIEW platform,The DDS technology was used to generate the trigger signals through the DA module.The data processing and transmission were implemented through the STM 32,and the serial touch screen was used to achieve the human-machine interaction.Finally,the signal was output by the photoelectric fixture;The experimental results show that the synchroniza-tion time consistency error of the output signal on the light screen target calibrator is between 330 ns and 370 ns,and the asyn-chronous delay accuracy is within±0.1 μs.It has the characteristics of small error,high accuracy,portability and lightweight,meet-ing the application requirements of fast calibration on light screen targets,it provides a technical guarantee for improving the installa-tion and adjustment accuracy of light screen targets.
万方数据
维普
