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Pulse measurement method

A measurement method and pulse technology, which is applied in the field of online reactor nuclear data measurement and reactor online nuclear instrumentation, can solve the problems of low efficiency and high cost

Active Publication Date: 2017-02-15
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

[0006] The invention provides a pulse measurement method, which solves the technical problems of high cost and low efficiency in the existing reactor nuclear instrumentation system nuclear measurement device or method to correct the accumulation results by experimental methods, and realizes high-efficiency and low-cost completion pulse Measured Technical Effects

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Embodiment 1

[0028] In Example 1, please refer to Figure 1-Figure 4 , providing a pulse measurement method, the method comprising:

[0029] Step 1: Obtain the output signal of the boron-based proportional counter tube, and amplify the output signal proportionally;

[0030] Step 2: Obtain the amplified signal, and calculate the pulse width of the amplified signal;

[0031] Step 3: Obtain the drift time of the ions in the boron-based proportional counter tube;

[0032] Step 4: Based on the pulse width and drift time, judge whether pulse accumulation has occurred in the output signal of the boron-lined proportional counter tube. If pulse accumulation occurs, perform pulse accumulation repair processing. If no pulse accumulation is sent, no processing will be performed. ;

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Abstract

The invention discloses a pulse measurement method. The method includes the following steps that: step 1, the output signals of a boron-lined proportional counter tube are obtained, and equal-proportion amplification is performed on the output signals; step 2, amplified signals are obtained, and the pulse width of the amplified signals is calculated; step 3, the drift time of icons in the boron-lined proportional counter tube is obtained; step 4, whether pulse stacking occurs on the output signals of the boron-lined proportional counter tube is judged based on the pulse width and the drift time, if pulse stacking occurs on the output signals of the boron-lined proportional counter tube, restoration processing for the pulse stacking is carried out, if pulse stacking does not occur on the output signals of the boron-lined proportional counter tube, no processing is performed; and sep 5, signals outputted from the step 4 are transmitted to a pulse counting measuring instrument for pulse measurement. With the pulse measurement method of the invention adopted, pulse measurement can be realized efficiently with low cost.

Description

technical field [0001] The invention relates to the field of reactor online nuclear instrumentation and online reactor nuclear data measurement, in particular to the measurement of pulse counting rate in a source area in a nuclear measurement device of a reactor nuclear instrumentation system. Background technique [0002] For a long time, the nuclear measurement device of the reactor nuclear instrumentation system has been the most important equipment for monitoring the nuclear state of the reactor during operation. Reactor nuclear measurement source area instruments are generally realized by boron lining-based proportional counter tubes and pulse counting measuring instruments. Due to the randomness of processes such as neutrons being captured in the detector, the output signal of boron-lined proportional counter tubes will appear pulse accumulation. (That is, two pulses are stacked together to form a pulse), and the pulse counting instrument in the source area is an instr...

Claims

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Application Information

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IPC IPC(8): G01T1/18
CPCG01T1/18
Inventor 朱宏亮曾少立刘艳阳刘立新李昆包超
Owner NUCLEAR POWER INSTITUTE OF CHINA
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