Method and device for monitoring position of radioactive materials in vehicles
US7239245B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Feb 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and device for monitoring the position of radioactive materials in vehicles relates to a technical field of monitoring of radioactive materials. The method comprises following steps: powering on a monitoring device, after initializing, the device automatically enters into background mode to acquire and process gamma and neutron detection data so as to obtain and update a background count rate in real time, and an image surveillance system enters into surveillance state; occupancy detector detects that a vehicle enters into monitoring channel, meanwhile the monitoring device automatically enters into occupancy mode, and performs data acquisition process for gamma and neutron detection under the occupancy mode in accordance with the time required by an alarm algorithm, so as to obtain respective total count rates; speed detector detects the times T1 and T2 for the vehicle when it reaches two points with a distance L, and then calculates out the vehicle's speed V; obtaining an alarm threshold by using a special algorithm on the basis of alarming algorithm, particularly, the background count rate updated in real time, and sending an alarm signal when the total count rate excee…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.