| 摘要 |
A method of detecting unauthorised transportation in a storage container 10 comprises installing within the container 10 a detector (22) to sense a physical parameter within the container 10 while the container 10 is in transit. On arrival of the container 10 at its destination, output signals generated by the detector (22) at intervals during the transit are analysed to determine the likelihood of the presence within the container 10 of unauthorised cargo. In an alternative embodiment the detector output may be remotely communicated (32) and analysed during transport. The detector (22) may comprise a gas ionisation detector, a carbon dioxide detector, an infrared detector, a sound or vibration detector, or a radar detector, or a combination thereof, to detect cargo such as radioactive materials, live animals, narcotics, or illegal immigrants. |
