31results about How to "Reduce structural design requirements" patented technology

The invention discloses an acrylonitrile-styrene copolymer material for promoting ultrasonic attenuation and a preparation method thereof, belonging to the technical field of polymer materials. The acrylonitrile-styrene copolymer material for promoting ultrasonic attenuation according to the present invention comprises the following components in parts by weight: 40-90 parts of acrylonitrile-styrene resin and 10-50 parts of ultrasonic attenuation agent; the ultrasonic attenuation agent comprises acrylonitrile -Styrene-Acrylate Copolymer, Acrylonitrile-Styrene-Butadiene Copolymer, Acrylonitrile-Styrene-Ethylene-propylene Rubber Copolymer, Acrylate-Styrene-Butadiene Copolymer, Styrene-Ethylene- At least one of butene-styrene copolymers. The acrylonitrile-styrene copolymer material prepared by the formula of the present invention can make the radar wave signal of false alarm to be lost in the transmission process, and can be used to prepare the grille, bumper and car logo of the vehicle equipped with the ultrasonic radar wave detector and other auto parts.

The invention relates to a wavelength selecting switch with a gravity acceleration sensor and a control method. The wavelength selecting switch is provided with an optical system, a switching attenuation unit, a switching attenuation control unit, a gravity acceleration sensor and a microprocessor, which are arranged in a main body, wherein the switching attenuation control unit is connected with the switching attenuation unit; a signal input end of the microprocessor is connected with the gravity acceleration sensor; and a signal output end of the microprocessor is connected with the signal input end of the switching attenuation control unit. The method comprises the following steps: sending a signal to the microprocessor by the gravity acceleration sensor; treating, storing, comparing and judging the signal by the microprocessor and outputting acceleration values after being changed in all directions; and controlling the switching attenuation unit by the switching attenuation control unit according to the received values. The wavelength selecting switch provided by the invention is simple in structure, low in cost and easily realized. The wavelength selecting switch can be applied to any optical communication device which is similar to the wavelength selecting switch, has a built-in switching attenuation unit and is based on a free space platform optical system. The problem of related index change, such as insertion loss, and the like, caused by different placing states or running states, is efficiently solved by using the wavelength selecting switch.

The present invention provides a TV voice camera control system and method, which collects key control signals input by users and detects the real-time working status of the voice camera, and outputs control signals according to the key control information and real-time working status, thereby outputting the working voltage or Cut off the working voltage of the voice camera. Through the above technical solution, it is possible to control the power-on or power-off of the voice camera according to the power-on control signal and the power-off control signal input by the user, which is convenient for protecting the privacy of the user and improving the user experience; at the same time, compared with the prior art, only through direct The way of pulling out the wire is used to control the power on and off. The technical solution of the present invention has the advantage of simple and reasonable operation.

The invention discloses a dedusting system of a polishing chamber, and belongs to the technical field of wood processing. The dedusting system of the polishing chamber comprises a conveying belt, a polishing chamber, a dedusting chamber and a separating wall, wherein the dedusting chamber and the polishing chamber are separated by the separating wall; the conveying belt is positioned on the middle and lower section of the polishing chamber; the top of the dedusting chamber is provided with a spraying system comprising a water accumulation tank, a spraying pipeline and a spraying head; the water accumulation tank is positioned on the top of the dedusting chamber; the spraying pipeline is communicated with the water accumulation tank; the sprayer is installed at the outlet end of the spraying pipeline. According to the technical scheme, the enclosed polishing chamber is externally provided with the dedusting chamber, and dust in the polishing chamber is discharged into the dedusting chamber so as to achieve an effect of removing the dust in the polishing chamber effectively; the spraying system is arranged in the dedusting chamber, the dust discharged from the polishing chamber is sprayed into a water tank below, and is collected into the water accumulation tank, so that the safety of the dedusting chamber is ensured; the damage to the health of workers is avoided; meanwhile, the environmental pollution is reduced greatly.

A method for realizing automatic focusing of a miniature camera and the miniature camera thereof, the miniature camera includes a housing, a lens installed at the front end of the housing, a sensor including an imaging photosensitive device and a phase detection unit installed in the housing, and the adjustment distance is calculated according to the sensor detection signal and the direction controller and the focus adjustment mechanism for automatically aligning the photosensitive surface of the sensor with the focal plane, the focus adjustment mechanism is an electromagnetically driven position adjustment mechanism, its movable end is connected with the sensor, and the other end is fixed at the rear of the housing end, after receiving the control signal output by the controller to adjust the position and direction, drive its movable end to move, and drive the photosensitive surface of the sensor to move to the position of the focal plane. The invention adopts electromagnetic drive, which reduces the difficulty in the structural design and production process of the camera phone, further reduces the production cost of the phone, and is beneficial to the popularization and popularization of the camera phone with the auto-focus function.

The invention belongs to the field of nuclear power plant instrument control system and main control room control panel, and specifically relates to a nuclear power plant control panel physical isolation device and method, the device includes external incoming cables, terminal sets, closed metal wire slots, and metal hoses a. Metal hose b. Isolation keel and panel equipment; among them, the external incoming cable is connected to the incoming terminal of the terminal group, and the outgoing terminal of the terminal group is respectively connected to the closed metal trunking and the metal hose a, and the closed metal trunking It is connected with metal hose b, metal hose a and metal hose b are connected with one end of the isolation keel, and the other end of the isolation keel is connected with the panel equipment. The physical isolating device of the present invention utilizes the form of keel and detachable metal plate that comes with the equipment, which saves installation space, solves the problems of difficult installation of traditional isolating devices, reduces the requirements for the design of the plate structure, and shortens the processing and manufacturing cycle of the plate. Save on implementation costs.

The invention provides a fuel switch of a fuel tank for an internal-combustion engine. The fuel switch comprises a switch body, a switch component, a oil-charging component, a fixedly-connected flange, an oil-gas separator, a fuel fine filter filtration core and a fine filtration oil cup, and is characterized in that: the oil-gas separator and the body of the switch are integrated into a whole, and are positioned above the fuel fine filter filtration core; and the width of an inner cavity of the oil-gas separator is no less than 10mm, the height is no less than 20mm and the length is no less than 25mm.

The invention provides an electromechanical coupling model-based shaped reflector antenna electrical performance prediction method. The method comprises the steps of determining a structure scheme of a shaped reflector antenna; building a finite element model of the structure of the shaped reflector antenna; calculating self-gravity deformation of the structure of the shaped reflector antenna; calculating impact terms of shaped surface error and feed source error of the shaped reflector antenna on antenna aperture field amplitude and phase position; calculating the electrical performance of the deformed shaped reflector antenna by using an electromechanical coupling model of the shaped reflector antenna; judging whether the result meets design requirements. The method can accurately analyze the influence of a gravity load on the structure of a shaped reflector antenna and achieve coupling analysis of the structure of a shaped reflector antenna and electric and magnetic fields. The method can analyze the influence of various kinds of structure error on working performance of an antenna, find out main structure factors, provide reasonable structure precision requirements according to actual requirements, shorten a development period and reduce development costs.

The invention relates to an athletic-track paving material and a preparation method thereof. The material is prepared from the following components: 100 parts of aggregate and 6 to 8 parts of asphalt, wherein the aggregate is prepared from the following components in percentage by volume: 25 to 52 percent of coarse aggregate, 42 to 75 percent of rubber powder and 6 to 8 parts of glass bead; the coarse aggregate is prepared from the following components in percentage by volume: 30 to 50 percent of haycite and 50 to 70 percent of rubber particle. All the components of the aggregate are uniformly mixed at 110 DEG C, an obtained first mixture is agitated with an asphalt material formed at 150 DEG C, and an obtained second mixture is made into the athletic-track paving material; the pollution in the material self and a construction process is little; the environmental protection performance is favorable; the athletic-track paving material has properties of being good in flatness, resistant to wear, wide in hardness range, appropriate in elasticity, excellent in shock absorption performance, capable of being applied in an all-weather manner and stable in physical performance, and the like, has quite low requirements on a device, personnel and structural design when being used for track surfacing, is simple in construction technique, is convenient to popularize and apply, and is easier in the control of construction quality; the cost is decreased; moreover, the material is convenient to repair and maintain when being used for the track surfacing, and can be recycled; a long-term environmental problem does not exist.

The invention relates to the technical field of HUD, and specifically discloses an HUD optical path system that can be used with polarized sunglasses and eliminates ghosting. The HUD optical path system includes a light source module and a reflection module, wherein the light source module emits P polarized light; and the reflection module includes a reflector module arranged in the HUD and an automobile windshield which can reflect P light and transmit S light. The HUD optical path system that can be used with polarized sunglasses and eliminates ghosting has the advantages of adopting the automobile windshield with a three-layer structure including at least glass inner surface, P light reflection layer and glass outer surface, thus being able to reflect P light and transmit S light whilethe P light emitted from HUD is not filtered when a driver wears the sunglasses and the image does not become darker, so that observation of the image is not influenced, and having no demand for the inner and outer surface angles of the windshield, so that the windshield can be parallel glass, and the manufacturing difficulty is reduced and the cost is lower. Besides, the windshield reflecting theP light coordinates with the HUD emitting the P light, so that ghosting does not occurs during image projection, and the requirement for the optical path and structural design inside the HUD is lower.