Object monitoring using multi spectral radiation

摘要

A method for monitoring objects for example for facilitating the identification and/or authentication of objects comprises: in a first recording phase: irradiating an object with a suitable source of radiation, collecting intensity information about radiation emergent from the object, resolving the intensity information spectroscopically between at least two energy bands, and storing the resultant dataset as a reference dataset; and in a second verification phase: irradiating an object with a suitable source of radiation, collecting intensity information about radiation emergent from the object, resolving the intensity information spectroscopically between at least two energy bands, and using the resultant dataset as a test dataset; identifying the object and retrieving its corresponding reference dataset; comparing the test dataset and the reference dataset within predetermined tolerance limits, and: in the event that the reference dataset and the test dataset correspond within the predetermined tolerance limits, treating the object as verified or in the event that the reference dataset and the test dataset differ by more than the predetermined tolerance limits, in a third identification phase: numerically processing the resolved intensity information from the test dataset to derive therefrom a dataset of information characteristic of the composition of the object, and using this information to identify the composition of the object.

主权项

1. A method for monitoring objects, the method comprising:
in a first phase: irradiating a reference object with a suitable source of radiation, collecting intensity information about radiation emergent from the reference object, resolving the intensity information spectroscopically between at least two energy bands, and storing the resultant spectroscopically resolved intensity dataset as a reference dataset representing a reference condition for the reference object; repeating the irradiating for a plurality of reference objects to create a reference database corresponding to the plurality of reference objects; and in a second phase, performed independently: irradiating a test object with the suitable source of radiation, collecting intensity information about radiation emergent from the test object, resolving the intensity information spectroscopically between at least two energy bands, and using the resultant spectroscopically resolved intensity dataset as a test dataset representing a test condition for the test object; identifying the test object and retrieving a reference dataset from the reference database, the reference dataset corresponding to the test object; comparing the test dataset and the reference dataset within predetermined tolerance limits to determine whether a test object remains in the reference condition, and in the event that the reference dataset and the test dataset correspond within the predetermined tolerance limits, treating the test object as verified or in the event that the reference dataset and the test dataset differ by more than the predetermined tolerance limits, in a third phase: and numerically processing the resolved intensity information from the test dataset to derive therefrom a third dataset of information characteristic of the composition of the test object, and using this information to identify the composition of the test object.