A device includes a housing, one or more sensors configured to detect at least one of a voltage or a current in proximity to the device, one or more lighting elements configured to output light responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more speakers configured to output audio responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more network interfaces configured to communicatively couple the device to one or more additional devices, and one or more fastening mechanisms configured to secure the device to a surface.

A device includes a housing, one or more sensors configured to detect at least one of a voltage or a current in proximity to the device, one or more lighting elements configured to output light responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more speakers configured to output audio responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more network interfaces configured to communicatively couple the device to one or more additional devices, and one or more fastening mechanisms configured to secure the device to a surface.

Methods and systems are provided in which an electric field above a threshold strength may be detected at one or more wearable articles and in which at least a haptic actuator of the one or more wearable articles is energized in response so as to warn the wearer and thereby effectively prevent electrical injury even if other modes of notification are unavailable.

Disclosed is a device and method for extracting electric network frequency (ENF). An ENF extraction device includes an electric conductor configured to receive an electromagnetic wave generated by an adjacent alternating current (AC) power source; a sampling device configured to sample an output signal of the electric conductor; and a processor configured to extract ENF based on an output signal of the sampling device.

Certain exemplary embodiments can provide a device comprising an upper housing, a lower housing, an electronics module, an electronics button, a side button, and a strip magnet. The strip magnet is coupled to the lower housing. The strip magnet is constructed to cause resistance to motion across a metal fastener. The resistance to motion is perceptible to a user of the device. The resistance is indicative of a location of the metal fastener and, thereby, allows the user of the device to locate the metal fastener if the electronics module fails to detect the metal fastener.

Systems and methods for locating and/or mapping buried utilities are disclosed. In one embodiment, one or more magnetic field sensing locating devices include antenna node(s) to sense magnetic field signals emitted from a buried utility and a processing unit to receive the sensed magnetic field signals may be mounted on a vehicle. The received magnetic field signals may be processed in conjunction with sensed vehicle velocity data to determine information associated with location of the buried utility such as depth and position.

The present disclosure relates to electromagnetic marker devices for locating hidden or buried objects. One embodiment includes an antenna having a plurality of conductive windings enclosed in a housing made of a low dielectric constant material and an electronic circuit including a circuit board having circuit elements disposed thereon and electrically coupled to the conductive windings through a connector. The circuit elements receive an input signal having a first frequency from an above-ground transmitter, convert the input signal to a power supply to power up the electronic circuit, generate, in response to the input signal, an output signal having a second frequency different from the first frequency, and provide the output signal, via the antenna element, to an above-ground receiver.

In accordance with the present disclosure, voltage sensing techniques using a voltage sensing device are employed to identify sources of electromagnetic radiation and provide warnings to a user about high levels of electromagnetic radiation. By way of example, the voltage sensing device may be a wearable device and may provide auditory, visual, and tactile alerts to a user.

A transmission line monitoring system and central processing facility are used to determine the geometry, such as a height, of one or more conductors of a power transmission line and real-time monitoring of other properties of the conductors.

Methods, systems and apparatus, for an unmanned aerial vehicle electromagnetic avoidance and utilization system. One of the methods includes obtaining a flight package indicating a flight pattern associated with inspecting a structure, the flight pattern causing the UAV to remain at a standoff distance from the structure, wherein the standoff distance is based on an electromagnetic field associated with the structure, and wherein the flight pattern is laterally constrained according to a property geofence associated with a right of way of the structure. The UAV is navigated according to the flight pattern, and the UAV captures images of the structure. For an initial portion of the flight pattern, the UAV navigates at an altitude based on the standoff distance and the property geofence towards the structure. The UAV determines a location at which to capture images of the structure, and the UAV provides the captured images to a user device.