Abstract: Systems for identifying one or more defined objects and alerting a user, and components of such systems. The system includes: a plurality of sensors configured to sense environmental information within a defined range; a plurality of alert devices configured to emit an alert; and a communications module communicatively connected to the sensors, the devices, and one or more processors configured to assess sensed environmental information to identify the one or more defined objects. The communications module is configured so that responsive to communicating with the sensors, the one or more processors, and the alert devices, the module communicates an alert signal to each alert device registered with a sensing zone to cause each registered alert device to emit the alert.

Abstract: System/method identifying a defined object (e.g., hazard): a sensor detecting and defining a digital representation of an object; a processor (connected to the sensor) which executes two techniques to identify a signature of the defined object; a memory (connected to the processor) storing reference data relating to two signatures derived, respectively, by the two techniques; responsive to the processor receiving the digital representation from the sensor, the processor executes the two techniques, each technique assessing the digital representation to identify any signature candidate defined by the object, derive feature data from each identified signature candidate, compare the feature data to the reference data, and derive a likelihood value of the signature candidate corresponding with the respective signature; combining likelihood values to derive a composite likelihood value and thus determine whether the object in the digital representation is the defined object.

Abstract: Systems for identifying one or more defined objects and alerting a user, and components of such systems. The system includes: a plurality of sensors configured to sense environmental information within a defined range; a plurality of alert devices configured to emit an alert; and a communications module communicatively connected to the sensors, the devices, and one or more processors configured to assess sensed environmental information to identify the one or more defined objects. The communications module is configured so that responsive to communicating with the sensors, the one or more processors, and the alert devices, the module communicates an alert signal to each alert device registered with a sensing zone to cause each registered alert device to emit the alert.