KEYWORDS: Optical fibers, Design and modelling, Flame, Data conversion, Carbon, Signal processing, Signal intensity, Reflection, Tunable filters, Optical transmission
Aiming at the requirements of visible light and near infrared information detection in the special industrial environment of high temperature and pollution such as converter steelmaking, a system for collecting optical radiation information is designed from the point of view of high precision and low cost. After the furnace flame is collected by the optical radiation acquisition system, the acquisition and sampling of the radiation light are divided into several spectral segments through the optical fiber spectrum division system and sent to the multi-spectral light intensity composite detection system composed of multiple discrete single chromatogram line probes. Combined with the corresponding hardware and software, the instantaneous spectral line radiation intensity of the furnace flame is detected in real time. The experimental results show that the system can work stably in harsh environment and can monitor the changes of different spectral segments well. There is a good match between the curve of light intensity and the curve of decarbonization rate.
In the information society, voice communication is the most common and indispensable in daily life, so the communication security issue is particularly important. Aiming at the security problem of voice communication, a low-cost communication security system based on single chip microcomputer is designed. The system is mainly divided into a confidential sending module and a confidential receiving module, which can realize two functions of ordinary call and confidential call, and realize synchronous confidential communication by using a single chip computer to generate random keys. The test results show that the system can realize the function of communication security, and can realize the module miniaturization, which is convenient to make a high density communication security tool.
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