According to an aspect of the disclosure, a user input device is provided comprising a substrate to couple to a user, a sensing unit coupled to the substrate and including a first sensor of a first type and being configured to generate a first signal indicative of a change in deformation of the user's skin, and a second sensor of a second type different from the first type and being configured to generate a second signal indicative of a deformation level of the user's skin, and a controller configured to receive the first signal and the second signal, determine, based on the first signal, a number of motions performed by a user, determine, based on the second signal, a type of the motions performed by the user, and determine a gesture performed by the user based on the determination of the number of motions and the type of motions.

A pressing force sensor that includes a sensor element configured with a piezoelectric film, a lead terminal for connection to an external circuit, a wiring conductor which connects pressing force detection electrodes and the lead terminal, and a flexible printed circuit board which withstands solder reflow temperatures. The flexible printed circuit board has the pressing force detection electrodes formed on a first principal surface thereof, and is folded via a folding line while the first principal surface faces inward. The sensor element is deflected by a pressing force applied to a second principal surface which faces outward and is in a first area of the flexible printed circuit board which is on one side with respect to the folding line, and a signal corresponding to the pressing force is thus taken out from the pressing force detection electrodes.

The invention disclosed is a pressure sensor, comprising: a pressure sensing plate and a strain sensing unit which are arranged in a stacked manner, wherein the thickness of the pressure sensing plate is 0.2 3 mm, and the material of the pressure sensing plate is an elastic material with a. Young's modulus not greater than 120 GPa. Also disclosed is a display apparatus, comprising a panel, a pressure sensing plate and a strain sensing unit which are arranged in a stacked manner in sequence, wherein the thickness of the pressure sensing plate is 0.2 3 mm, and the material of the pressure sensing plate is an elastic material with a Young's modulus not greater than 120 GPa. Also disclosed is an electronic device comprising the pressure sensor, and an electronic device comprising the display apparatus. The pressure sensor, the display apparatus and the electronic device disclosed can magnify the size of pressure and deformation, so that a pressure deformation signal can be detected using a relatively small pressure, and detection precision is improved.

The invention disclosed is a pressure sensor, comprising: a pressure sensing plate and a strain sensing unit which are arranged in a stacked manner, wherein the thickness of the pressure sensing plate is 0.2 3 mm, and the material of the pressure sensing plate is an elastic material with a. Young's modulus not greater than 120 GPa. Also disclosed is a display apparatus, comprising a panel, a pressure sensing plate and a strain sensing unit which are arranged in a stacked manner in sequence, wherein the thickness of the pressure sensing plate is 0.2 3 mm, and the material of the pressure sensing plate is an elastic material with a Young's modulus not greater than 120 GPa. Also disclosed is an electronic device comprising the pressure sensor, and an electronic device comprising the display apparatus. The pressure sensor, the display apparatus and the electronic device disclosed can magnify the size of pressure and deformation, so that a pressure deformation signal can be detected using a relatively small pressure, and detection precision is improved.

Embodiments of present disclosure relates to method and device for controlled emission of radiation. Device comprises probe unit, sensor unit and switch unit. Probe unit is configured to emit radiation on surface of object. Probe unit is supported, via an elastic, to supporting structure of device. Sensor unit is placed at predefined distance from probe unit, along supporting structure, to establish contact with surface. Sensor unit comprises flexible material, mounted to supporting structure, with cavity and first force sensing unit placed in cavity of flexible material. First force sensing unit is configured to detect first force transferred from surface sensor unit. Switch unit is configured to control emission of radiation on surface, based on first force detected by first force sensing unit, upon contact of sensor unit with surface and identification of probe unit to be one of in contact with surface or at minimal distance from surface.

Embodiments of present disclosure relates to method and device for controlled emission of radiation. Device comprises probe unit, sensor unit and switch unit. Probe unit is configured to emit radiation on surface of object. Probe unit is supported, via an elastic, to supporting structure of device. Sensor unit is placed at predefined distance from probe unit, along supporting structure, to establish contact with surface. Sensor unit comprises flexible material, mounted to supporting structure, with cavity and first force sensing unit placed in cavity of flexible material. First force sensing unit is configured to detect first force transferred from surface sensor unit. Switch unit is configured to control emission of radiation on surface, based on first force detected by first force sensing unit, upon contact of sensor unit with surface and identification of probe unit to be one of in contact with surface or at minimal distance from surface.

A flywheel energy storage system incorporates various embodiments in design and processing to achieve a very high ratio of energy stored per unit cost. The system uses a high-strength steel rotor rotating in a vacuum envelope. The rotor has a geometry that ensures high yield strength throughout its cross-section using various low-cost quenched and tempered alloy steels. Low-cost is also achieved by forging the rotor in a single piece with integral shafts. A high energy density is achieved with adequate safety margins through a pre-conditioning treatment. The bearing and suspension system utilizes an electromagnet that off-loads the rotor allowing for the use of low-cost, conventional rolling contact bearings over an operating lifetime of several years.

A force sensing device includes: a frame; a plurality of contact blocks disposed on a first side of the frame; at least one force sensor disposed between adjacent contact blocks among the plurality of contact blocks; and at least one pressing member protruding outwardly from a second side of the frame, wherein the at least one pressing member is disposed in a region corresponding to one or more of the contact blocks.

A force sensing device includes: a frame; a plurality of contact blocks disposed on a first side of the frame; at least one force sensor disposed between adjacent contact blocks among the plurality of contact blocks; and at least one pressing member protruding outwardly from a second side of the frame, wherein the at least one pressing member is disposed in a region corresponding to one or more of the contact blocks.

Embodiments of the present disclosure are directed to load cell assemblies configured for measuring loads or weight associated with a semi-trailer. In one embodiment, a load cell assembly includes a shear plate load cell configured to be coupled between a frame and a support member of the semi-trailer. The shear plate load cell detects or measures the trailer's weight with a sensor positioned on a strain sensing section of a plate. The strain sensing section is positioned at a location offset from the plate's centerline. The shear plate load cell is accordingly configured to provide an ideal moment balance that allows accurate load measurements independent of where the load is applied relative to the load cell or the support member.