An ultrasound system is disclosed that includes an ultrasound imaging device including a display screen, a processor and memory having stored thereon logic, and an ultrasound probe. The logic of the ultrasound imaging device, upon execution by the processor, can causes an alteration of content displayed on the display screen in accordance of with ultrasound probe movement-related data. The ultrasound imaging device can include a light source configured to provide incident light to the optical fiber cable, the optical fiber cable including a plurality of reflective gratings disposed along a length thereof. Each of the plurality of reflective gratings can be configured to reflect light with different specific spectral widths to provide distributed measurements in accordance with strain applied to the optical fiber cable. The ultrasound imaging device can obtain the ultrasound probe movement-related data through an optical fiber.

An apparatus for sensing an elastic deformation of a hollow element, wherein the apparatus comprises at least one sensor that is arranged in a watertight capsule which is connected in a watertight manner to a connector device comprising at least one watertight electrical connector that is electrically connected to the at least one sensor, the at least one watertight electrical connector forming a first waterproof barrier of the connector device between an outside of the watertight capsule and the at least one sensor, and wherein the connector device comprises at least one further waterproof barrier that is formed between the first waterproof barrier and the at least one sensor.

Aspects of the subject technology relate to a sensor for a downhole tool. The downhole tool can include a collar and a sensor. The sensor can be secured to the collar for measuring one or more operational characteristics of the downhole tool during operation of the downhole tool. The sensor can include a substrate. The sensor can also include a plurality of strain gauges disposed on the substrate. The plurality of strain gauges can be configured to measure axial strains and torsional strains on the collar for measuring the one or more operational characteristics of the downhole tool.

Aspects of the subject technology relate to a sensor for a downhole tool. The downhole tool can include a collar and a sensor. The sensor can be secured to the collar for measuring one or more operational characteristics of the downhole tool during operation of the downhole tool. The sensor can include a substrate. The sensor can also include a plurality of strain gauges disposed on the substrate. The plurality of strain gauges can be configured to measure axial strains and torsional strains on the collar for measuring the one or more operational characteristics of the downhole tool.

A force sensor includes a circuit board, a sensing element, and a first gel. The sensing element is disposed on the circuit board, wherein the sensing element has a top surface and a bottom surface opposite to each other and has a sensing portion. The bottom surface faces the circuit board. The sensing portion is located at the top surface. The first gel is disposed on the top surface and covers the sensing portion, wherein the sensing portion is adapted to generate a sensing signal through an external force transferred from the first gel to the top surface.

A force sensor includes a circuit board, a sensing element, and a first gel. The sensing element is disposed on the circuit board, wherein the sensing element has a top surface and a bottom surface opposite to each other and has a sensing portion. The bottom surface faces the circuit board. The sensing portion is located at the top surface. The first gel is disposed on the top surface and covers the sensing portion, wherein the sensing portion is adapted to generate a sensing signal through an external force transferred from the first gel to the top surface.

A force sensor includes a strain body including a base portion, a displacement portion configured to make a displacement relative to the base portion under external force, and an elastic connection portion configured to elastically connect the base portion and the displacement portion, a board including a detection unit configured to detect the displacement of the displacement portion relative to the base portion in a first direction, and an interposed member interposed between the strain body and the board, the interposed member including an extending portion extending in a second direction intersecting a surface of the board and the first direction.

A sensor system includes a sensor network comprising at least one optical fiber having one or more optical sensors. At least one of the optical sensors is arranged to sense vibration of an electrical device and to produce a time variation in light output in response to the vibration. A detector generates an electrical time domain signal in response to the time variation in light output. An analyzer acquires a snapshot frequency component signal which comprises one or more time varying signals of frequency components of the time domain signal over a data acquisition time period. The analyzer detects a condition of the electrical device based on the snapshot frequency component signal.

A guidewire including an optical fiber containing three fiber cores, each supporting a strain-sensing fiber Bragg grating (FBG) is described. The three FBGs are susceptible to changes in strain so that axial and lateral force vectors imparted to the FBGs can be ascertained. An optical connector detachably connects the guidewire optic fiber to a proximal optical fiber. The proximal optical fiber in turn is connected to a controller, which in addition to ascertaining the axial and lateral force vectors imparted to each of the FBGs, is programmed to calculate the spatial orientation of the guidewire as it is advanced through the vasculature. This capability is extremely useful for positioning the guidewire at a body site of interest prior to performing a medical procedure. A temperature-sensing FBG is used to compensate for changes in the ambient temperature.

Various implementations include a switch assembly that includes a housing and at least one printed circuit board (PCB) disposed within the housing, and one or more force sensors disposed on the PCB. Overload protection is provided for the one or more force sensors using one or both of an energy absorbing pad and/or a force transfer plate having one or more protrusions that engage with a platform defined by the housing to prevent excessive forces from being transferred to the one or more force sensors and damaging them and/or other components of the switch assembly.