A boom protection system prevents damage to an insulated boom section. The boom protection system has a static strain-detection assembly, a pressure-detection assembly, and an alarm. The static strain-detection assembly is configured to determine a load disposed from an implement at a distal end of said insulated boom section. The static strain-detection assembly includes a subject plate presenting a void therein, a traversing member spanning the void, and a strain gauge disposed adjacent to the traversing member. The pressure-detection assembly is configured to detect pressure within a hydraulic cylinder that is associated with the insulated boom section. The pressure detection assembly comprises a first pressure gauge at a distal end of the hydraulic cylinder, and a second pressure gauge at a proximal end of the hydraulic cylinder. The alarm is configured to alert a user of potential structural damage to the insulated boom section.

A system includes a span block configured to couple with an extension from a top drive at a first end of the span block and configured to couple to a tubular at a second end of the span block. The system also includes a sensor block of the span block. The sensor block extends between the first end and the second end of the span block. Moreover, the sensor block is configured to provide an electronic indication of deformation of a portion of the sensor block in response to forces placed on the span block.

A patient support apparatus includes a base and a support frame. A lift system operates to lift and lower the support frame relative to the base. The lift system includes a first lift and a second lift. The first lift and the second lift are independently operable to place the support frame in one or more Trendelenburg positions. A plurality of load cells acts between the lifts and the support frame such that a load on the support frame is transmitted to the plurality of load cells to measure the load. The first lift includes a guided body arranged to move longitudinally relative to the base in response to operation of the second lift to move the support frame to the one or more Trendelenburg positions.

A foil sensor for force detection with direct force transducer, with a corresponding electrical contact line for detecting forces and force loads, wherein electrical signal can be derived from the foil sensor. At least two conductive electrodes are applied to the plastic film material which have a contacting area on the leads. On this surface of the plastic film material, a direct force transducer is applied, which absorbs the mechanical forces and deforms elastically when force is applied. A polymer nanocomposite material is also placed on this surface in such a way that the conductive electrodes are covered by the polymer nanocomposite material, which does not or only partially touches the direct force transducer, whereby a free area is formed between the material and transducer. The elastic material compression of the polymer nanocomposite can be detected by an impedance and/or electrical resistance measurement via the conductive electrodes.

A patient support apparatus includes a base and a support frame. A lift system operates to lift and lower the support frame relative to the base. The lift system includes a first lift and a second lift. The first lift and the second lift are independently operable to place the support frame in one or more Trendelenburg positions. A plurality of load cells acts between the lifts and the support frame such that a load on the support frame is transmitted to the plurality of load cells to measure the load. The first lift includes a guided body arranged to move longitudinally relative to the base in response to operation of the second lift to move the support frame to the one or more Trendelenburg positions.

A stretchable panel includes a stretchable substrate, and a strain sensor on the stretchable substrate, wherein the strain sensor includes a first gate electrode, a first polymer semiconductor layer overlapped with the first gate electrode along a thickness direction of the stretchable substrate and including polymer chains of the first polymer semiconductor layer, and a first source electrode and a first drain electrode electrically connected to the first polymer semiconductor layer and facing each other with the first polymer semiconductor layer interposed therebetween, and the polymer chains of the first polymer semiconductor layer are oriented so as to cross a first channel length direction extending from the first source electrode to the first drain electrode.