A method and system for estimating a resistivity of a formation. A method for estimating a resistivity of a formation may comprise disposing a downhole tool into a borehole, wherein the downhole tool comprises a pad, an injector electrode, and a return electrode, injecting a current signal into the formation from the injector electrode, measuring a voltage signal between the injector electrode and the return electrode; and determining a formation resistivity and a formation dielectric constant from at least one of the voltage signal, at least one property of the downhole tool, and at least one property of the borehole. A system for estimating a resistivity of a formation may comprise a downhole tool. The downhole tool may comprise a pad, wherein the pad comprises an injector electrode and a return electrode. The system may further comprise a conveyance for disposing the downhole tool in a borehole and an information handling system.

A method and system for estimating a resistivity of a formation. A method for estimating a resistivity of a formation may comprise disposing a downhole tool into a borehole, wherein the downhole tool comprises a pad, an injector electrode, and a return electrode, injecting a current signal into the formation from the injector electrode, measuring a voltage signal between the injector electrode and the return electrode; and determining a formation resistivity and a formation dielectric constant from at least one of the voltage signal, at least one property of the downhole tool, and at least one property of the borehole. A system for estimating a resistivity of a formation may comprise a downhole tool. The downhole tool may comprise a pad, wherein the pad comprises an injector electrode and a return electrode. The system may further comprise a conveyance for disposing the downhole tool in a borehole and an information handling system.

An external field response distribution visualization device includes: an induction circuit that induces a first field component from each of induction positions; a sensor that senses a field strength at sensing positions for each of the induction positions; and an information processing circuit that generates an image showing an external field response distribution. The information processing circuit: calculates, using the sensing result as a boundary condition, an induction position dependent field function that takes an induction and sensing positions as inputs and outputs the field strength; calculates an imaging function that takes an imaging target position as an input and outputs an image intensity, and is defined based on the strength output from the induction position dependent field function in response to inputting the imaging target position; and generates the image based on the imaging function.

Embodiments describe an eartip including an eartip body having an attachment end and an interfacing end opposite from the attachment end. The eartip body can include an inner eartip body having a sidewall extending between the interfacing end and the attachment end, the sidewall defining a channel and having a first thickness near the attachment end and a second thickness different from the first thickness at the interfacing end. The eartip can also include an attachment structure coupled to the inner eartip body at the attachment end, the attachment structure having an inner surface and an outer surface. The attachment structure can include an upper region interfacing with the sidewall and defining discrete through-holes, a lower region below the upper region where the inner surface defines a plurality of recesses positioned around the lower region, and a mesh extending across the channel and into the upper region.

A wireless lighting device for vehicle accessories includes a signal transmitter and an encapsulated light board. The light board includes a unitary baseplate, a backlight module, a power module, and a top cover. The backlight module including a circuit board, light emitting elements, a transceiver, and a control module configured to turn the light emitting elements on and off according to the detected signal. The power module including a battery and a conductive strip configured to electrically connect the battery to the circuit board. The top cover configured to be irreversibly sealed to the baseplate with a customizable light permeable region covering the light elements. The transmitter configured to be installed on a door or a frame of a vehicle, and the light board configured to be installed in a vehicle accessory. The wireless lighting device having at least a ten year operational life without replacement of the batteries therein.

A wireless lighting device for vehicle accessories includes a signal transmitter and an encapsulated light board. The light board includes a unitary baseplate, a backlight module, a power module, and a top cover. The backlight module including a circuit board, light emitting elements, a transceiver, and a control module configured to turn the light emitting elements on and off according to the detected signal. The power module including a battery and a conductive strip configured to electrically connect the battery to the circuit board. The top cover configured to be irreversibly sealed to the baseplate with a customizable light permeable region covering the light elements. The transmitter configured to be installed on a door or a frame of a vehicle, and the light board configured to be installed in a vehicle accessory. The wireless lighting device having at least a ten year operational life without replacement of the batteries therein.

A core electrode based on multiple rods, which is a core electrode employed in an underwater electric field sensor electrode, includes: a signal part to which a signal line is connected; a seawater reaction part that electrochemically reacts with seawater; and a waterproof molding part for waterproofing the signal part, in which the seawater reaction part is composed of a plurality of rods made of a silver-silver chloride.

The invention discloses an integrated detection method of electromagnetic searching, locating and tracking for subsea cables. After being launched into water, the cable-tracking AUV carries out primary Z-shaped reciprocating sailing to search the electromagnetic signal of the target subsea cable, when the electromagnetic signal reaches a preset threshold value, the AUV executes the cable-tracking detection. In the tracking process, if the target electromagnetic signal intensity is lower than the preset threshold, it is determined that subsea cable tracking is lost. At this time, the secondary Z-shaped cable-researching route planning and tracking are performed based on the lost point. In the process that the AUV autonomously tracks and detects the subsea cable, relative locating between AUV and subsea cable is performed based on the electromagnetic signal radiated by the subsea cable, and autonomous tracking control under the guidance of the electromagnetic locating signal is performed.

A security system including a detection device, an imaging device and a controller. The detection device being a detection device through which people traverse. The detection device producing a signal representative of at least one of an object being carried by a person and a distribution of metal carried by the person. The imaging device produces an image of the person. The controller executing the steps of determining whether the signal from the detection device exceeds a predetermined value; instructing the imaging device to capture an image of the person if the determining step indicates that the signal exceeds the predetermined value thereby creating a captured image; transmitting the captured image to selected data devices assigned to trusted individuals; and receiving a response from at least one of the data devices, the response indicating an action to be taken regarding the person.

A sensor device includes a first electrode and a first signal generation device configured to apply an electrical signal to the first electrode such that the first electrode emits a first electrical field. The sensor device further includes a second electrode located at a first distance from the first electrode and configured to pick up the first electrical field. A third electrode and a second signal generation device configured to apply an electrical signal to the third electrode such that the third electrode emits a second electrical field is included in the sensor device.