Abstract: A falling detection method and an electronic system using the same are provided. The falling detection method includes: obtaining a video stream, and performing recognition on a person in an image of the video stream to obtain at least one human body feature; calculating based on the human body feature to obtain at least one falling related feature; calculating at least one movement trend in a plurality of directions of the person in the video stream by using an optical flow algorithm; inputting the falling related feature and the movement trend to a falling classifier, such that the falling classifier generates an output result indicating whether a falling event happens to the person; and sending an alarm according to the output result.

Abstract: A projection device including at least one projection module and at least one adjusting structure is provided. The projection module has at least one optical axis. The projection module is adapted to provide an image beam. The image beam is transmitted along a light transmission path to a projection target and forms a projection image. The adjusting structure is connected to the projection module. The adjusting structure is adapted to drive at least a part of the projection module to rotate along the optical axis such that the projection image rotates.

Abstract: In one aspect, sintered ceramic bodies are described herein which, in some embodiments, demonstrate improved resistance to wear and enhanced cutting lifetimes. For example, a sintered ceramic body comprises tungsten carbide (WC) in an amount of 40-95 weight percent, alumina in an amount of 5-30 weight percent and ditungsten carbide (W2C) in an amount of at least 1 weight percent.

Abstract: A suspension system of a single-axis optical actuator is provided, including an elastic suspension plate in the form of a frame having two opposite ends each extended, through a beveled edge and a bending section, to form a cantilever arm. The elastic suspension plate is provided with a magnetic device on one side thereof. The cantilever arms are supported on a reinforcement frame to carry an optical lens. When an electric current is supplied through a connector to the magnetic device of the actuator, a reciprocal attraction or repulsion force is generated and applied to one side of the elastic suspension plate so that the elastic suspension plate may function as an oscillation member with an imaginary axis line between the two bending sections of the frame body as an axis to carry the optical lens to generate fast and position-constrained oscillation at two sides.

Abstract: A connection structure for assembling shower, that includes: a shower, on which is disposed a first connection hanging piece; and a shower head, on which is disposed a second connection hanging piece connected in cooperation with the first connection hanging piece, such that the first connection hanging piece and the second connection hanging piece are connected and hung in cooperation, to realize connection of the shower with the shower head. For this connection structure, the shower can be placed conveniently on the shower head, and it can be produced easily, to achieve good economic results.

Abstract: A suspension system of a biaxial optical actuator is provided, including a circuit-carrying base and an oscillation member, which is provided, in a center thereof, with an optical lens. An elastic suspension plate is coupled to the oscillation member and has four corners each forming an elastic unit that projects outside the oscillation member. The elastic units collaborate with support posts to support the elastic suspension plate and the oscillation member at a location above the base. The oscillation member is provided, on each of four sides thereof, with a magnetic device. The four magnetic devices is sequentially activated to apply a magnetic force such that the oscillation member together with the optical lens carried thereon to rotate about two imaginary axes of the elastic suspension plate respectively defined between each pair of two opposite magnetic devices to thereby serve as a rotation axes of the oscillation member.

Abstract: A sensor for monitoring a species which is a component of a fluid. The sensor includes an internal reflection window which, in use, is in direct contact with the fluid. The sensor further includes a mid-infrared light source which directs a beam of mid-infrared radiation into said window for attenuated internal reflection at an interface between the window and the fluid. The sensor further includes a first narrow bandpass filter which preferentially transmits mid-infrared radiation over a band of wavelengths corresponding to an absorbance peak of the species. The sensor further includes an infrared detector which detects filtered mid-infrared radiation transmitted through the first filter and a processor for measuring the intensity of the detected mid-infrared radiation transmitted through the first filter, and determines therefrom an amount of the species in the fluid.

Abstract: The disclosure generally relates to power over fiber technology configured to provide electrical power and communications via fiber to one or more sensors of one or more varieties. More particularly, the disclosure relates to a sensor system comprising a laser data module operatively connected to a powered sensor module, wherein the powered sensor module receives a light, converts the light to electrical power, and powers a sensor with the electrical power, and wherein the powered sensor module transmits signals from the sensor to a laser data module.

Abstract: A falling detection method and an electronic system using the same are provided. The falling detection method includes: obtaining a video stream, and performing recognition on a person in an image of the video stream to obtain at least one human body feature; calculating based on the human body feature to obtain at least one falling related feature; calculating at least one movement trend in a plurality of directions of the person in the video stream by using an optical flow algorithm; inputting the falling related feature and the movement trend to a falling classifier, such that the falling classifier generates an output result indicating whether a falling event happens to the person; and sending an alarm according to the output result.

Abstract: A water saving device is disclosed, which comprises a base having a water flow channel, a throttle ring and a support seat made of an elastic material, and a capacity space is formed in the base, and the support seat is disposed in the capacity space. An annular channel is formed between the support seat and the base. The water channel is in communication with the annular channel. The throttle ring is disposed in the annular channel. When the water pressure is increased to a certain extent, the throttle ring is deformed, and the cross-sectional area of the water flow channel is reduced. The water saving device can effectively prevent the throttle ring from shifting or falling off, and it also has good structural strength and stability that is not easily deformed or broken by external force.

Abstract: Provided is a photovoltaic power converter receiver, including a photovoltaic cell, a waveguide coupled to the photovoltaic cell, and an optical transmission device of which an end is coupled to the waveguide for transmitting an optical wave to the photovoltaic cell through the waveguide, wherein the end of the optical transmission device is offset from a longitudinal central axis of the waveguide by a distance Doffset.

Abstract: A suspension system of a biaxial optical actuator is provided, including a circuit-carrying base and an oscillation member, which is provided, in a center thereof, with an optical lens. An elastic suspension plate is coupled to the oscillation member and has four corners each forming an elastic unit that projects outside the oscillation member. The elastic units collaborate with support posts to support the elastic suspension plate and the oscillation member at a location above the base. The oscillation member is provided, on each of four sides thereof, with a magnetic device. The four magnetic devices is sequentially activated to apply a magnetic force such that the oscillation member together with the optical lens carried thereon to rotate about two imaginary axes of the elastic suspension plate respectively defined between each pair of two opposite magnetic devices to thereby serve as a rotation axes of the oscillation member.

Abstract: A projection device including at least one projection module, at least one reflecting element, and at least one adjusting structure is provided. The projection module has at least one optical axis. The projection module is adapted to provide a projection beam. The projection beam is transmitted along a light transmission path to a projection target to form a projection image. The reflecting element is disposed between the at least one projection module and the projection target and located on the optical axis and has a reflecting surface, wherein the reflecting surface is adapted to reflect the projection beam to the projection target. The adjusting structure is connected to the projection module and the reflecting element. The adjusting structure is adapted to drive the projection module and the reflecting element to rotate along a second axis such that the projection image rotates.

Abstract: A projection device including at least one projection module, at least one reflecting element, and at least one adjusting structure is provided. The projection module has at least one optical axis. The projection module is adapted to provide a projection beam. The projection beam is transmitted along a light transmission path to a projection target to form a projection image. The reflecting element is disposed between the at least one projection module and the projection target and located on the optical axis and has a reflecting surface, wherein the reflecting surface is adapted to reflect the projection beam to the projection target. The adjusting structure is connected to the reflecting element. The adjusting structure is adapted to drive the reflecting element to rotate along a first axis such that the projection image moves horizontally.

Abstract: An integrated approach for cleaning an active surface of a petrochemical sensor. Sensors in the petrochemical industry are often deployed in locations where they are prone to fouling. By heating the active surface fouling substances may be removed from the active surface. Heating the surface above a supercritical point of a fluid being sensed may create a fluid that may serve to clean the active surface. Limiting the duration of the applied heating and/or pulsing the heating may mitigate adverse effects of use of high temperatures. A doped active surface, such as a doped diamond window may be designed to have conductive areas in the window that may be used for resistive heating of the window.

Abstract: A sensor for monitoring a species which is a component of a fluid. The sensor includes an internal reflection window which, in use, is in direct contact with the fluid. The sensor further includes a mid-infrared light source which directs a beam of mid-infrared radiation into said window for attenuated internal reflection at an interface between the window and the fluid. The sensor further includes a first narrow bandpass filter which preferentially transmits mid-infrared radiation over a band of wavelengths corresponding to an absorbance peak of the species. The sensor further includes an infrared detector which detects filtered mid-infrared radiation transmitted through the first filter and a processor for measuring the intensity of the detected mid-infrared radiation transmitted through the first filter, and determines therefrom an amount of the species in the fluid.

Abstract: An artificial magnetic conductor comprising a base board, a first conducting element, a second conducting element and a first lumped element is provided. The first conducting element is disposed at a first side of the base board. The first conducting element includes an opening. The second conducting element is disposed at a second side of the base board. The first lumped element is disposed on the corresponding first conducting element. An electronic device including the artificial magnetic conductor is also provided.

Abstract: A push button switching spool includes a switching body. The switching body includes a housing, a water inlet and a water outlet, wherein the housing comprises an upper casing and a lower casing with a gap for passing water. A mandrel is disposed in the housing, and the mandrel axially moved within the housing. The mandrel comprises a plurality of grooves with sealing rings. And, a left protrusion and a right protrusion are formed on each groove, wherein a diameter of the left protrusion is the same as a diameter of the right protrusion. The push button switching spool can normally switch water paths at high water pressure.