US 12,755,594 B2Granted

Method and system for controlling access to an environment

AssigneeInxpect S.p.A.

InventorsIvan Paderno, Gabriele Gasperi

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Abstract

A set of one or more radar sensors controls accesses of targets to an environment with a hazardous device. The radar sensors start the detection in a first region of interest in an access path to the environment. Upon the detection of a target, the hazardous device is commanded a first safety measure, the detection in the first region of interest is interrupted, and the detection is started at a second region of interest arranged more internally than the first region of interest. Upon the detection of a target in the second region of interest, a second safety measure is activated. Instead, in the absence of targets in the second region of interest for a predetermined time, the detection in the second region of interest is interrupted, and the detection in the first region of interest is restarted.

Claims10

Dependent claims

Method for controlling access to an environment, comprising:

positioning a set of one or more radar sensors along an access path to an environment in which a hazardous device is present,
controlling the set of radar sensors to start a first detection mode to detect access of targets to a first region of interest in the access path,
upon the detection of the access of a target in the first region of interest:
commanding the hazardous device to activate a first safety measure,
controlling the set of radar sensors to interrupt the detection of the access of targets in the first region of interest, and
controlling the set of radar sensors to start a second detection mode to detect access of targets to a second region of interest in the access path, the second region of interest being arranged to be encountered after the first region of interest by a target travelling the access path towards the hazardous device,
wherein a specific radar sensor of the set of one or more radar sensors is active in both modes, the specific radar sensor monitoring a first radar region in the first detection mode and a second radar region in the second detection mode,
wherein the first radar region is the whole or part of the first region of interest, and the second radar region is the whole or part of the second region of interest and is distinct from the first radar region,
upon the detection of the access of a target in the second region of interest, commanding the hazardous device to activate a second safety measure, different from the first safety measure, and
upon detection of absence of targets in the second region of interest for a first predetermined time:
controlling the set of radar sensors to interrupt the detection of the access of targets in the second region of interest, and
controlling the set of radar sensors to start the detection of access of targets to the first region of interest.

9 more elements

System for controlling access to an environment, comprising a set of one or more radar sensors positioned along an access path to an environment in which a hazardous device is present, and a control system configured for:

controlling the set of radar sensors to start a first detection mode to detect access of targets to a first region of interest in the access path,
upon the detection of the access of a target in the first region of interest by the set of radar sensors:
generating a control signal for the activation of a first safety measure by the hazardous device,
controlling the set of radar sensors to interrupt the detection of the access of targets in the first region of interest, and
controlling the set of radar sensors to start a second detection mode to detect access of targets to a second region of interest in the access path, the second region of interest being arranged to be encountered after the first region of interest by a target travelling the access path towards the hazardous device,
wherein a specific radar sensor of the set of one or more radar sensors is active in both modes, the specific radar sensor monitoring a first radar region in the first detection mode and a second radar region in the second detection mode,
wherein the first radar region is the whole or part of the first region of interest, and the second radar region is the whole or part of the second region of interest and is distinct from the second radar region,
upon the detection of the access of a target in the second region of interest by the set of radar sensors, generating a command signal for the activation of a second safety measure by the hazardous device, different from the first safety measure, and
upon detection of absence of targets in the second region of interest by the set of radar sensors for a first predetermined time:
controlling the set of radar sensors to interrupt the detection of the access of targets in the second region of interest, and
controlling the set of radar sensors to start the detection of access of targets to the first region of interest.

8 more elements

Dependencies are inferred from the claim text.