Gamma dose rate probe adopting Kalman filter

A Kalman filter and dose rate technology, applied in dosimeters, radiation measurement, instruments, etc., can solve the problems of data instability, short response time, long response time, etc., and achieve simple logic implementation and low hardware circuit requirements Effect

Pending Publication Date: 2022-03-15
中广核久源(成都)科技有限公司
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Problems solved by technology

The common gamma dose rate meter adopts the conventional data smoothing method, which is difficult to achieve both stability and sensitivity. The equipment with stable data has a long response time; the equipment with short response time has unstable data.

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  • Gamma dose rate probe adopting Kalman filter

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Embodiment Construction

[0013] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] In the following description, references to "one embodiment," "an embodiment," "an example," "example," etc. indicate that such described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitations, but not every embodiment or example necessarily includes the specific feature, structure, characteristic, property, element or limitation. Additionally, repeated use of the phrase "according to one embodiment of the present application" does not necessarily refer to the same embodiment, although it may.

[0015] For simplicity, some technical features known to those skilled in the art are omitted from the following description.

[0016] According to an embodiment of the prese...

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Abstract

The invention provides a gamma dose rate probe adopting a Kalman filter. The gamma dose rate probe comprises a nuclear radiation detector, a signal forming circuit, an MCU and an external circuit, the MCU adopts a counter to receive the primary signal, adopts a plurality of Kalman filters to carry out data processing on the received pulse signal data, and realizes burr of the primary signal by adjusting the process noise variance and observation noise variance of the Kalman filters. The device has the following advantages: (1) the stability of output data is improved, and a Kalman filter with proper parameters is automatically selected for filtering according to the fluctuation degree of the data; and outputting the response time of the data, and realizing the switching or parameter correction of the Kalman filter through the discrimination condition of the data discriminator, thereby controlling the response time of the data. And (2) according to the set parameters, the stability and response time of the data can be automatically balanced, and the optimal output level is achieved. And (3) the whole process is automatically and continuously carried out, the algorithm is realized in the MCU, and the realization logic is relatively simple.

Description

technical field [0001] The invention specifically relates to a gamma dose rate probe using a Kalman filter. Background technique [0002] In the field of nuclear instrumentation and nuclear radiation monitoring, the gamma dose rate can measure the gamma dose rate in a certain area. By measuring the gamma dose rate in a certain area, it can remind or warn the surrounding personnel or monitor the distribution of radioactive substances in the area, which is beneficial to ensure the safety of personnel and track the leakage of radioactive substances. When measuring the gamma dose rate in the environment, it is hoped to have a long-term stable gamma dose rate value; in the case of radioactivity enhancement or reduction, it is hoped that the data can respond quickly and be stable near the actual dose rate value. [0003] At low dose rate levels, small-volume Geiger counter tube detectors or other low-count rate nuclear radiation detectors can only output a small amount of origina...

Claims

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Application Information

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IPC IPC(8): G01T1/02G01T7/00
CPCG01T1/02G01T7/00
Inventor 祝宣淋肖明王俊丽祝远帅
Owner 中广核久源(成都)科技有限公司
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