136results about How to "Reduce headroom" patented technology

A gain control circuit adjusts the signal level of a received signal responsive to the bandwidth a received signal and / or the delay spread of the channel in which the signal has propagated. The bandwidth and delay spread are evaluated to estimate the amount of signal variation that is expected due to fast fading. Adjustments to the signal level are then made to avoid clipping while at the same time ensuring that the dynamic range of a receiver component is efficiently utilized.

An electrical tool includes a multi-stage gear transmission (10) located in the gear transmission housing (6) and having at least two axially displaceable indexing gear (42a, 42b), a shifting device (12) for shifting the gear transmission from one stage to another stage and having a shifting slide (14) linearly displaceable between different shifting positions, and at least two connection elements (32) for connecting the shifting slide (14) with respective indexing gears (42a, 42b), with the shifting slide (14) having a tracing profile (20) having two control tracks (22, 24), and the connection elements each having a first and second tracing sections (30a, 30b) to which the tracing profile (20) applies a shifting force in stages and which are arranged on opposite sides of a pivot axis (SA) of a respective connection element (32).

A system for tuning a radio-frequency signal includes a first input path, a second input path, a common reference generator, a selector, a mixer, and a filter. The first input path and the second input path propagate a first single-ended input signal and a second single-ended input signal, respectively, to the selector. The selector converts the first single-ended input signal and the second single-ended input signal into a first differential input signal and a second differential input signal, respectively, using a reference signal generated by the common reference generator.The selector selectively couples one of the first and the second input path to an input of the mixer. The mixer downconverts a selected on of the differential input signals received from the selector. The filter attenuates a portion of the downconverted input signal outside a passband associated with the filter.

A mobile device having a periphery and including a substrate, a feeding line, and a resonance element is provided. The substrate has a ground plane and the feeding line is disposed on the substrate. The resonance element is formed on at least a portion of the periphery. The resonance element is electrically connected to the feeding line and the ground plane respectively via a first feeding point and a first ground point, so as to form a first excitation path. The resonance element receives and transmits a first radio frequency signal and a second radio frequency signal via the first excitation path.

A multi-band antenna including a metal plate and a radiation element is provided. The metal plate is electrically connected to a ground plane and has a slot. A resonant path is formed by the edges of the slot. The radiation element has a feeding point and is located in the slot of the metal plate. A feeding signal from the radiation element is coupled to the metal plate, and the multi-band antenna excites a resonant mode by the resonant path of the metal plate, so as to receive or transmit a first radio frequency signal.

Certain example embodiments relate to techniques for creating improved photovoltaic (PV) modules. In certain example embodiments and first and second glass substrate are provided. A PV array is provided between the first and second glass substrates. The first and second substrates are laminated together with the PV array between the glass substrates. In certain example embodiments the PV module is dimensioned to be similar to an existing roof system (e.g., a sunroof) in a vehicle.

A system for tuning a radio-frequency signal includes a first input path, a second input path, a common reference generator, a selector, a mixer, and a filter. The first input path and the second input path propagate a first single-ended input signal and a second single-ended input signal, respectively, to the selector. The selector converts the first single-ended input signal and the second single-ended input signal into a first differential input signal and a second differential input signal, respectively, using a reference signal generated by the common reference generator. The selector selectively couples one of the first and the second input path to an input of the mixer. The mixer downconverts a selected on of the differential input signals received from the selector. The filter attenuates a portion of the downconverted input signal outside a passband associated with the filter.

A multi-band antenna including a metal plate and a radiation element is provided. The metal plate is electrically connected to a ground plane and has a slot. A resonant path is formed by the edges of the slot. The radiation element has a feeding point and is located in the slot of the metal plate. A feeding signal from the radiation element is coupled to the metal plate, and the multi-band antenna excites a resonant mode by the resonant path of the metal plate, so as to receive or transmit a first radio frequency signal.

An apparatus includes an operational amplifier and a plurality of capacitors coupled to an input terminal of the operational amplifier and configured to be selectively coupled to receive one of an input voltage signal and an output voltage signal of the operational amplifier.

Certain example embodiments relate to techniques for creating improved photovoltaic (PV) modules. In certain example embodiments and first and second glass substrate are provided. A PV array is provided between the first and second glass substrates. The first and second substrates are laminated together with the PV array between the glass substrates. In certain example embodiments the PV module is dimensioned to be similar to an existing roof system (e.g., a sunroof) in a vehicle. In certain example embodiments, holes are provided in a PV module sandwiched between two substrates, the holes being shaped and arranged within the PV module so as to allow light transmission into the vehicle at desired level while still being substantially filled by the laminate or adhesive material used to secure the PV module to the two surrounding substrates.

The invention belongs to transmissions, in particular relates to a transmission with three shafts and two clutches. The transmission with three shafts and two clutches is characterized by comprising the two clutches, two input shafts and one output shaft; the two clutches are driven by an engine in a gear driving or belt driving manner and are respectively connected with the corresponding input shafts; a drive gear set with odd gears is arranged on one input shaft, while drive gear sets with even gears are arranged on the other input shaft; a driven gear set is arranged on the output shaft; the drive gears of the two input shafts share a corresponding driven gear; a drive gear of a reverse gear is arranged on one input shaft; a driven gear of the reverse gear is arranged on the other input shaft and meshed with the drive gear of the reverse gear; a joint gear ring of a parking mechanism is fixedly connected with a box and matched with a synchronous device of the output shaft; and a parking function is realized by pulling a shifting fork by a gear shifting pull wire. The transmission with three shafts and two clutches is compact in structure and low in cost; besides, the transmission does not employ a concentric shaft, therefore, the axial length of the transmission is reduced, the rigidity of the system is enhanced, and the performance is reliable.

The invention discloses a vehicle deceleration and vehicle spacing increase system. The system includes a device for identifying and dynamically displaying vehicle spacing information and traffic flow parameter controlled led lamp apparatuses paved at both sides of a traffic lane cut-off line. The traffic flow parameter controlled led lamp apparatuses paved at the both sides of the traffic lane cut-off line include led lamp belts and control units. The device for identifying and dynamically displaying vehicle spacing information includes a variable information plate, a wireless transmit-receive module, a video camera, vehicle velocity measurement radar, an identification module, a vehicle spacing calculation module, and a power supply. The vehicle deceleration and vehicle spacing increase system can induce drivers to reduce the vehicle velocity and increase the space headway, improves vehicle-following safety, effectively reduces traffic accidents, and has the advantages that the driving comfort is not reduced and the noise is not generated.

The invention belongs to a speed changer, and particularly relates to a three-shaft double-clutch speed changer. The speed changer is characterized in that the speed changer comprises two clutches, two input shafts and an output shaft, wherein the two clutches are driven by gear transmission or belt transmission by an engine and connected with the corresponding input shafts respectively; an odd-gear driving gear set is arranged on one input shaft; an even-gear driving gear set is arranged on the other input shaft; a driven gear set is arranged on the output shaft; driving gears of the two input shafts share the corresponding driven gears; reverse gear driving gears are arranged on one input shaft; reverse gear driven gears are arranged on the other input shaft and engaged with the reverse gear driving gears; the soldered tooth ring part of a parking mechanism is fixedly connected with a box body; and the parking mechanism is matched with an output shaft synchronizer and achieves a parking function by pulling a shifting fork with gear shifting stay wire. The speed changer is compact in structure, the cost is lowered, the axial length of the speed changer is shortened as no coaxial shaft is adopted, the system rigidity is improved, and the performance is reliable.

The invention discloses a self-adaptive collision energy absorption system of an automobile. The system is characterized by comprising a bumper cross beam, a universal ball joint, a self-adaptive energy absorber, an automobile longitudinal beam and a connecting plate, wherein the automobile longitudinal beam adopts a hollow structure, a casing of the self-adaptive energy absorber is arranged inside and fixed in a hollow cavity of the automobile longitudinal beam, a front-end piston rod of the self-adaptive energy absorber is in threaded connection of a ball of the universal ball joint, the connecting plate in the universal ball joint is fixedly connected on the bumper cross beam, and the universal ball joint keeps the piston rod of the self-adaptive energy absorber to move axially. Output signals are adjusted according to collision state information fed back by the self-adaptive energy absorber to control damping force of the self-adaptive energy absorber, and real-time self-adaptive adjustment of the damping force of the self-adaptive energy absorber is realized according to the magnitude of collision force.

A support beam of truss in tower used for chemical industry is prepared as connecting truss main beam with truss sub beam by support structural unit, connecting two ends of truss main beam to support base and connecting it with wall of tower by debber, hanging two ends of truss sub beam in the air.

A mobile device having a periphery and including a substrate, a feeding line, and a resonance element is provided. The substrate has a ground plane and the feeding line is disposed on the substrate. The resonance element is formed on at least a portion of the periphery. The resonance element is electrically connected to the feeding line and the ground plane respectively via a first feeding point and a first ground point, so as to form a first excitation path. The resonance element receives and transmits a first radio frequency signal and a second radio frequency signal via the first excitation path.

A method includes tracking a tuning voltage at a first circuit coupled to a first drain node of a first supply of a charge pump. The method also includes tracking the tuning voltage at a second circuit coupled to a second drain node of a second supply of the charge pump. The method further includes stabilizing a first voltage of the first drain node and a second voltage of the second drain node responsive to the tuning voltage.

An electrical tool includes a multi-stage gear transmission (10) located in the gear transmission housing (6) and having at least two axially displaceable indexing gear (42a, 42b), a shifting device (12) for shifting the gear transmission from one stage to another stage and having a shifting slide (14) linearly displaceable between different shifting positions, and at least two connection elements (32) for connecting the shifting slide (14) with respective indexing gears (42a, 42b), with the shifting slide (14) having a tracing profile (20) having two control tracks (22, 24), and the connection elements each having a first and second tracing sections (30a, 30b) to which the tracing profile (20) applies a shifting force in stages and which are arranged on opposite sides of a pivot axis (SA) of a respective connection element (32).

The invention discloses a driving mechanism for an isolating switch, comprising a gear transmission assembly, a crank arm assembly and a mounting frame, wherein the gear transmission assembly is a vertical shaft bevel gear transmission assembly comprising a first bevel gear and a second bevel gear; the first bevel gear rotates around a first rotating shaft, and the second bevel gear is driven by the first bevel gear and rotates around a second rotating shaft; the first rotating shaft and the second rotating shaft are vertically arranged; the basic shape of the mounting frame is a rectangular framework formed by combining a front wall, a rear wall, a left wall and a right wall; the crank arm assembly comprises a supporting arm fixed on the second rotating shaft, a transmission arm used fordriving an externally connected operation spindle to rotate and a connecting arm used for connecting the supporting arm and the transmission arm; both ends of the connecting arm are respectively connected with the supporting arm and one end of the transmission arm; and when the first bevel gear rotates, the second bevel gear is driven to rotate so as to further drive the supporting arm to rotate,and the externally connected operation spindle is driven to rotate through the connecting arm and the transmission arm. The driving mechanism is suitable for a high-voltage switch cabinet and can effectively reduce the volume of the switch cabinet.

The invention relates to a rail vehicle window and a mounting method thereof. A simple integral window frame structure with stable strength is adopted, so that integral mounting and detaching processes of the window are simplified, and efficiency of field mounting operation is improved. The window comprises a window frame and glass mounted on the window frame. The window frame is made of sections, a section structure of the window frame is provided with inwards concave slots and outwards convex flanges, the inwards concave slots are arranged on the inner side of the window, and the outwards convex flanges are arranged on the outer side of the window; and rubber strips are inserted in the slots, and the glass is fixedly sandwiched between the rubber strips and the flanges. The glass is directly fixed by the sections on the periphery of the window, accordingly more mounting parts do not need to be assembled on a vehicle in advance, and mounting process is simple. Besides, the window frame of the window is made of the sections, the section structure of the window frame is used for fixedly clamping the glass, the structure of the window is also simple, and production and assembly processes are also simplified to the greatest degree.

Embodiments of the present application provide a housing assembly, an antenna assembly, and an electronic device. The housing assembly includes: a substrate; a plastic frame which is disposed on the outer periphery of the substrate, wherein a groove is formed in an outer surface of the plastic frame, and side walls at the two sides of the groove are provided with mounting holes; a conductive metalpiece disposed in the groove, wherein edges of the conductive metal sheet have positioning portions, and the positioning portions penetrate into the mounting holes to make a fixed connection betweenthe conductive metal piece and the plastic frame. The clearance area of the antenna structure in the electronic device can be increased, and the radiation signal strength of the antenna structure canbe improved.

The invention relates to a track type environment inspection robot for an electric power system, and belongs to the technical field of environment inspection. The inspection robot comprises an I-shaped traveling track, a traveling mechanism traveling on the traveling track, a running gear driving the traveling mechanism, a lifting rotating mechanism, a monitoring device and an electric control device, wherein the running gear comprises a front cylindrical power wheel and a rear cylindrical power wheel which are attached to the bottom of the traveling track, running power is provided through transmission of a first gear motor, a first synchronous belt and a second synchronous belt, and the friction force between the power wheels and the traveling track is effectively increased; in addition,pressure regulating devices arranged below the power wheels can effectively regulate the friction force between the power wheels and the traveling track, the slipping phenomenon in the running process is prevented, and the robot can monitor the electric power system in all directions and is high in routing inspection efficiency and routing inspection precision through cooperation of the travelingtrack, the traveling mechanism and the running gear and carrying of the monitoring device.

The invention provides an electrical device mounting cabinet control system. The electrical device mounting cabinet control system comprises a DSP controller, a motor driving circuit and a mounting cabinet apparatus; the mounting cabinet apparatus comprises a cabinet body (9), and a left-side electrical device (94) and a right-side electrical device (95) both mounted in the internal space of the cabinet body; an operating window (91) open to an operator is arranged in the middle of the front side panel of the cabinet body (9); the internal space of the cabinet body is set to be a left-side enclosed box part for the left-side electrical device (94) and a right-side enclosed box part for the right-side electrical device (95) at the positions on the two sides of the operating window (91) respectively; the front side panels facing the operator, at the positions of the left-side enclosed box part and the right-side enclosed box part, are closed.

The invention discloses a three-in-one electric driving integrated system of a new energy vehicle. The system comprises a half-shaft mechanism, a controller, a motor and a transmission box, wherein the motor is provided with an integrated housing and an integrated end cover; the two ends of the half-shaft mechanism are fixedly connected with the integrated housing and the integrated end cover; thetransmission box is connected with the integrated housing of the motor; the integrated housing, the integrated end cover and the half-shaft cooperatively surround to form an odd space; the controlleris installed in the odd zero space and fixed to the housing of the motor. The motor housing and the right end cover of the transmission box are designed into an integrated structure, the output half-shaft supporting frame and the motor housing rear end cover are designed into an integrated structure, a half-shaft cage is moved back to the outer side of the rear end cover of the motor, so that previous space which is preserved for preventing the moving interfering of the output half-shaft and the motor and the controller is omitted, and therefore the central spacing between the output half-shaft of the input half-shaft of the transmission box is reduced to the minimum through the designing.

The invention discloses a multi-channel aeration facility with a front oblique tail pier. The multi-channel aeration facility is used for eliminating water crowns behind a gate pier of a spillway of hydraulic and hydropower engineering and performing aeration protection on flow surfaces. The multi-channel aeration facility comprises the oblique tail pier and an aeration facility. The oblique tail pier and the aeration facility are arranged behind the gate pier of the spillway, the oblique tail pier is arranged at the tail of the gate pier, the aeration facility is closely connected to the rear of the section side of the oblique tail pier, and the oblique tail pier is completely coincided with an initial section side which is formed by a bottom cavity of the aeration facility. The aeration facility can be selectively in a 'flip bucket and vertical drop' combination modes, a 'flip bucket and aeration groove' combination mode and the like. The multi-channel aeration facility has the advantages that air supply channels can be increased while the water crowns behind the gate pier can be effectively eliminated, a three-dimensional aeration cavity is formed, the bottom cavity and a natural tail cavity of the oblique tail pier can be communicated with each other via the three-dimensional aeration cavity, accordingly, the aeration areas of the inside of the cavities are increased, and the water aeration quantity, an air-water ratio and a flow surface aeration concentration are also correspondingly increased; a multi-channel air feeding effect is favorable for sufficient and uniform all-section aeration, the air speeds of two side ventilation wells are reduced, and an aeration protection function of the aeration facility is further strengthened.

The invention relates to a distributed energy system for solving corrosion and scaling of an open type cooling system of a combustion engine and a working method. The distributed energy system comprises an air inlet pipeline, an air inlet heat exchanger, a fuel gas inlet pipeline, an internal combustion engine, an internal combustion engine generator, a gas turbine, an atomizing air cooler, an LCIcooler, a turbine lubricating oil cooler, a waste heat boiler, a steam turbine, a steam turbine generator, a smoke type lithium bromide unit, a cooling water pump, a steam type lithium bromide unit,a circulating water pump, a water supplementing tank, a medical dosing water feeding pump, a medical dosing device, a compensation heat exchanger and an electric refrigeration device. According to thesystem and the method, on one hand, the air inlet temperature of the combustion engine can be effectively reduced, the heat of a cooling water is fully utilized, the operation efficiency of the combustion engine is improved, on the other hand, the corrosion of a cooling water system can be prevented, accumulating allowance of a heat exchange area needing to be considered during design of the heatexchangers is reduced, the gradient utilization of energy is realized, the energy of the exhaust gas and the energy of the steam can be effectively utilized, and the utilization efficiency of the energy is greatly improved.

The invention relates to the technical field of substations, and particularly relates to a compact American-type substation, which comprises a high voltage chamber, a low voltage chamber and a transformer chamber, and is characterized by further comprising a terminal control chamber, wherein the high voltage chamber is divided into a high voltage switch cabinet and a high voltage wire incoming cabinet; the low voltage chamber is divided into a low voltage general switch cabinet, a low voltage feeder line cabinet and a compensation cabinet; the compensation cabinet is internally provided with a compensator; the terminal control chamber is internally provided with a microcomputer comprehensive protection device, a meter, a high voltage on-load voltage regulation device and a data transmission unit; the high voltage chamber, the low voltage chamber and the terminal control chamber are arranged inside the box body; and the transformer chamber is located outside the box body. According to the compact American-type substation, the structure is simple, maintenance and feeder line increasing are convenient, intelligent management is realized conveniently, the working process is reduced due to phase sequence adjustment, reserved space is reduced, the covered area is reduced, remote control, remote communication and remote measurement on electrical equipment can be realized, and remote power grid data acquisition, detection, control and other performance requirements by the user can be met.

The invention relates to a magnesium water battery, particularly a magnesium water semi-fuel cell which is used in seawater and has a certain flexibility. The battery comprises an anode, a diaphragm, a cathode and an elastic saccular tube of a stationary battery. The single battery structure is in a sandwich form: a diaphragm is wrapped outside the anode strip, the anode is sandwiched by two cathodes and wrapped by the saccular tube with certain holes; the batteries are connected in parallel or in series or in a series-parallel connection mode; the anode is a magnesium-mercury alloy with a certain flexibility; the cathode is a catalyst-carried foam material; the diaphragm is a polymer non-woven porous membrane material; and the electrolyte is seawater which flows into the battery from the outside when the battery operates. The operating principle of the battery is as follows: the anode magnesium loses electrons to form magnesium ions which are diffused into the electrolyte, and the electrons are transferred to the cathode through a wire and react with water to generate hydrogen. The magnesium water battery is simple in structure. The battery has a certain flexibility, and thus, has the advantages of wider applicability and greater application convenience.

The invention discloses a compressor with wiring protection. The compressor comprises a compressor body, an overload protector and a wiring protection device, wherein the overload protector and the wiring protection device are arranged on the compressor body. A protective cover comprises an installation portion and a combination portion connected with the peripheral wall of the installation portion, a terminal protective cover comprises a protective cover body and a combination shade connected with the peripheral wall of the protective cover body, the installation portion is provided with a first positioning structure, a second positioning structure matched with the first positioning structure is arranged on the peripheral surface of a protector main body of the overload protector, the combination portion is provided with a first buckling structure, and the combination shade is provided with a second buckling structure buckled with the first buckling structure. The invention further provides the wiring protection device and the overload protector. By means of the wiring protection device, the overload protector can be positioned effectively, bias of the overload protector or damage to the overload protector when the overload protector is clamped into a first cavity of the protective cover is prevented, and wiring operation between a compressor terminal block and the overload protector is facilitated.