Optical cargo detection
US7381939B2 · kind B2 · utility
0Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2005 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Feb 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detector for detecting cargo in a container has a controller block, a transmitter for transmitting light into the field of view, a receiver for receiving reflected light, and a threshold comparator for determining whether the received light meets a threshold for cargo detection. The receiver includes a DC block for removing effects of ambient light. The detector performs detection multiple times and averages the results, which can be compared with a previously stored condition of cargo presence or absence to increase the detection accuracy further.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.