False alarm rate of artificial radioactive aerosol continuous monitor is inevitable. When the standard deviation of artificial radioactive aerosol concentration is determined, the minimum detection limit and false alarm rate are a pair of contradictory relations. This paper proposes the concept of alarm measure, transforms the results obtained by several deduction algorithms into alarm measure, and then uses DS evidence theory to fuse several alarm measures. The fused results are used as the basis for whether to alarm. This method can greatly reduce the false alarm rate while keeping the minimum detection limit unchanged. The experiment proves the effectiveness of this method.
Cite this paper
Wen, L. and Gu, M. (2024). Artificial Radioactive Aerosol Continuous Monitor with Low False Alarm Rate Based on DS Evidence Theory. Open Access Library Journal, 11, e1280. doi: http://dx.doi.org/10.4236/oalib.1111280.
Li, H.B. (2013) Research on Continuous Monitoring Technology and Equipment Development of Plutonium Aerosol in High Radon Environment. Ph.D. Thesis, Tsinghua University, Beijing.
Li, A.W. and Wang, S.Q. (2001) High Sensitivity Continuous Monitoring Instrument for Radioactive Aerosol. Nuclear Electronics and Detection Technology, 21, 356-361. (In Chinese)
Jin, Y. (2009) Research Progress of Real-Time and Rapid Radioactive Aerosol Monitoring Technology. New Technology and New Technology, 1, 61-64. (In Chinese)
Chu, C.S., Huang, R.L., Liu, X.Y., et al. (2006) Study on False Alarm Rate in Nuclear Monitoring Process. Nuclear Technology, 29, 392-395. (In Chinese)
Siiskonen, T. and P?ll?nen, R. (2005) Advanced Simulation Code for Alpha Spectrometry. Nuclear Instruments & Methods in Physics Research, 550, 425-434.
https://doi.org/10.1016/j.nima.2005.05.045
Bortels, G. and Collaers, P. (1987) Analytical Function for Fitting Peaks in Alpha-Particle Spectra from Si Detectors. International Journal of Radiation Applications & Instrumentation Part A: Applied Radiation & Isotopes, 38, 831-837.
https://doi.org/10.1016/0883-2889(87)90180-8
Konzen, K. and Brey, R. (2012) A Method of Discriminating Transuranic Radionuclides from Radon Progeny Using Low-Resolution Alpha Spectroscopy and Curve-Fitting Techniques. Health Physics, 102, S53.
https://doi.org/10.1097/HP.0b013e31824641a8
Ke, X.-L. (2016) Research and Application of Synthesis Method of Trust Function in Evidence Theory. Ph.D. Thesis, University of Science and Technology of China, Hefei.