Simulation method for random properties of nuclear signals

Abstract

The invention discloses a simulation method for the random properties of nuclear signals, which is characterized by comprising a digital signal processor (DSP), a detector, a signal processing module, a multichannel data acquisition analytical module, a power supply management module, a multichannel simulation signal output module, a man-machine interface and the like; the DSP digital signal processor is connected with the multichannel data acquisition analytical module, the multichannel simulation signal output module and the man-machine interface, and is also connected with a computer; the signal processing module is connected with the multichannel data acquisition analytical module and the detector respectively; and the multichannel data acquisition analytical module is connected with the DSP digital signal processor. In the simulation method, a parameterized model is adopted, so the random properties of the nuclear signals in a radioactive site can be learned conveniently and flexibly and can be simulated vividly by random sampling; and model parameters can be adjusted according to requirements so as to adapt to the simulation of the random properties of the nuclear signals under different radioactive measurement conditions and on-site environments. In addition, pulse signals of multiple waveforms also can be generated. The nuclear random signals generated by the simulation method meet the requirement of nuclear instruments on the diversification of the nuclear signals in the study of a nuclear signal processing process.

Description

Technical field [0001] The invention relates to a method for simulating the random characteristics of nuclear signals. Background technique [0002] In the research of digital nuclear signal processing methods and nuclear instruments, the reliability of processing methods and equipment performance can only be guaranteed based on the analysis of a large number of nuclear signals. Nuclear signals can be generated with the help of radioactive sources. In the actual working environment, the use of radioactive sources is often restricted by conditions such as the workplace and time; in particular, long-term radiation exposure will have a serious impact on the health of workers . Therefore, it is very necessary to simulate a variety of nuclear random signals. [0003] Due to the random nature of radionuclide decay, the ionization, excitation, photoelectric conversion and electron multiplication generated in the detector are also random. The random characteristic of the electrical outp...

AI Technical Summary

Problems solved by technology

When the current nuclear random signal generator simulates this random characteristic, it is either simply designed as a single basic distribution such as uniform distribution, Gaussian distribution, exponential distribution, multinomial distribution, and Poisson distribution, or as a simple combination of these basic distributions. , but in fact the random characteristics of nuclear signals are often more complicated, and it is inaccurate to describe them with a few basic distributions, and it is difficult to meet the flexibility and diversity requirements of random characteristics

In addition, current nuclear random signal generators do not take into account the test conditions or environment - such as detector resolution, radiation field, spectral drift, etc.

Therefore, the randomness of the pulse signal provided by these signal generators to the spectrometer is single and inflexible, and at the same time, it cannot simulate the radioactive scene realistically.

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