The invention concerns a system (1) and a method for scanning a person (2) before access to a restricted access area (3), comprising a processing unit (14) and a metal detector (10, 70) for detecting metal in the shoes (20) or in a waist portion of the person walking on a surface (15). The processing unit controls an indication unit (12, 13) for: letting the person walk towards the restricted area if a first scan indicates the probability of the presence of metal lower than a first threshold; in case of a probability higher than the first threshold, prompting the person to carry out a second scan close to a mark (11) on the carpet; and prompting the user to remove his shoes or object if the first scan indicates a probability higher than a second threshold, or if the second scan indicates a probability higher than a third threshold.

The invention concerns a system (1) and a method for scanning a person (2) before access to a restricted access area (3), comprising a processing unit (14) and a metal detector (10, 70) for detecting metal in the shoes (20) or in a waist portion of the person walking on a surface (15). The processing unit controls an indication unit (12, 13) for: letting the person walk towards the restricted area if a first scan indicates the probability of the presence of metal lower than a first threshold; in case of a probability higher than the first threshold, prompting the person to carry out a second scan close to a mark (11) on the carpet; and prompting the user to remove his shoes or object if the first scan indicates a probability higher than a second threshold, or if the second scan indicates a probability higher than a third threshold.

A robotic vehicle for moving above ground while fabricating a subsurface polymer layer to protect an underground structure is provided. The robotic vehicle includes: a body; a rotational member that contacts the ground and moves the body over the ground; a ripper assembly having a proximal end that moves with the body, and a distal end that moves underground at a fabrication depth in response to the movement of the proximal end while fabricating the polymer layer; a ground penetrating radar (GPR) that locates and measures a depth of the underground structure below the ground; and a computerized control system that controls the rotational member, the distal end of the ripper assembly, and the GPR to move the body over the located underground structure while tracking the location of the underground structure and fabricating the polymer layer at the fabrication depth and above the measured depth of the underground structure.

A robotic vehicle for moving above ground while fabricating a subsurface polymer layer to protect an underground structure is provided. The robotic vehicle includes: a body; a rotational member that contacts the ground and moves the body over the ground; a ripper assembly having a proximal end that moves with the body, and a distal end that moves underground at a fabrication depth in response to the movement of the proximal end while fabricating the polymer layer; a ground penetrating radar (GPR) that locates and measures a depth of the underground structure below the ground; and a computerized control system that controls the rotational member, the distal end of the ripper assembly, and the GPR to move the body over the located underground structure while tracking the location of the underground structure and fabricating the polymer layer at the fabrication depth and above the measured depth of the underground structure.

An electronic computing system preserves a pre-error state of a processing unit by receiving a first stream of inputs; buffering the first stream of inputs to generate a buffered stream of inputs identical to the first stream of inputs; conveying the first stream to a primary instance of a first program; conveying the buffered stream to a secondary instance of the first program; executing the primary instance on the first stream in real time; executing the secondary instance on the buffered stream with a predefined time delay with respect to execution of the primary instance on the first stream; detecting an error state resulting from execution of the primary instance; and in response to detecting the error state, pausing the secondary instance and preserving a current state of the secondary instance, wherein the current state of the secondary instance corresponds to a pre-error state of the primary instance.

An electronic computing system preserves a pre-error state of a processing unit by receiving a first stream of inputs; buffering the first stream of inputs to generate a buffered stream of inputs identical to the first stream of inputs; conveying the first stream to a primary instance of a first program; conveying the buffered stream to a secondary instance of the first program; executing the primary instance on the first stream in real time; executing the secondary instance on the buffered stream with a predefined time delay with respect to execution of the primary instance on the first stream; detecting an error state resulting from execution of the primary instance; and in response to detecting the error state, pausing the secondary instance and preserving a current state of the secondary instance, wherein the current state of the secondary instance corresponds to a pre-error state of the primary instance.

The present disclosure sets forth a motion sensing outdoor security light with the flexibility of being mounted to either a wall structure or to an eave or ceiling structure. An adjustable spherical motion sensor housing may be provided with the rotationally adjustable outdoor security light, allowing easy adjustment of motion detection ranges under different mounting schemes without comprising the aesthetic design of the light. The adjustable spherical motion sensor housing may also provide an enlarged horizontal field of view for better performance.

The present disclosure sets forth a motion sensing outdoor security light with the flexibility of being mounted to either a wall structure or to an eave or ceiling structure. An adjustable spherical motion sensor housing may be provided with the rotationally adjustable outdoor security light, allowing easy adjustment of motion detection ranges under different mounting schemes without comprising the aesthetic design of the light. The adjustable spherical motion sensor housing may also provide an enlarged horizontal field of view for better performance.

A method and system for ensuring quality of buried asset detection data over a communications network includes a server for receiving buried asset detection data from an electromagnetic locator device (ELD), evaluating a quality of the buried asset detection data and responsive to determining that the quality of the buried asset detection data meets a predefined threshold, transmitting an approval signal to the ELD. Responsive to determining that the quality of the buried asset detection data does not meets the predefined threshold, transmitting a rejection signal to the ELD and closing access for receiving buried asset detection data from the ELD for other sites. The ELD for collecting buried asset detection data at a site, transmitting the buried asset detection data to the server, and receiving signals from the server.

A marine survey node can include a body to be deployed to a seabed, a marine survey receiver coupled to the body and to acquire marine survey data, and a soil sample module associated with the body to collect a soil sample from the seabed. A soil sample module can include a vessel, a first valve coupled to the vessel, and a spike coupled to the vessel. The spike can penetrate an earth surface. The first valve can maintain a pressure difference between the vessel and the spike when closed and equalize a pressure between the vessel and the spike when open. An inlet in the spike can equalize pressure between an inside of the spike and an outside of the spike and to collect a soil sample from the earth surface.