138results about How to "Strong engineering applicability" patented technology

The invention provides a portable ultraphonic phased array detection imager which has simple, convenient and natural man-machine interaction and high engineer applicability and comprises a touch screen, a computer, an ultraphonic phased array circuit system, an ultraphonic phased array probe and detection imaging software, wherein the touch screen is connected with the computer; the computer is connected with the ultraphonic phased array circuit system through a data bus; the touch screen, the computer and the ultraphonic phased array circuit system are integrated to form a main imager body which is externally connected with the ultraphonic phased array probe through a cable; and the detection imaging software is arranged on the computer. The invention can be used for manual detection, can obtain defective A, B or S scanning images, can also be used for the automatic nondestructive inspection in the industry field by connecting with a scanner with one or two freedom degrees and installing the ultraphonic phased array probe on a clamp of the scanner and can obtain detective A, B, C scanning images, and therefore, the invention is very suitable for the nondestructive inspection in the industry field.

The invention relates to a self-centering unmanned ship suitable for adverse sea conditions and a self-centering work manner of the self-centering unmanned ship, and belongs to the field of unmanned ship equipment and techniques. The unmanned ship comprises a main hull, a self-centering deck, equipment, a pipeline mast, a propeller, a radar, an air intake and exhaust system and a host machine system. According to the self-centering unmanned ship disclosed by the invention, the water-tight deck is designed, so that the hull of the unmanned ship has a self-centering function, the possibility of ship overturning of the unmanned ship is avoided, and additionally allocating self-centering equipment is not needed; besides, through the inner structure of the unmanned ship and the self-centering working manner, when a heeling angle of the hull exceeds a certain angle, a host machine and the air intake and exhaust system can be automatically turned off, so that the purpose that the whole ship is in a water-tight condition is realized; and when the heeling angle of the hull is returned to a small angle, the air intake and exhaust system and the host machine are automatically turned on, the mechanism is easy to operate, and the purpose of protecting a propelling system can be realized. During high-speed sailing in deep high sea, the unmanned ship can effectively and continuously work, and the unmanned ship is a reliable, economical and high-efficiency unmanned ship.

The invention discloses a frequency-adjustable wireless electric energy transmission device, which comprises an adjustable active crystal oscillator array, a multistage amplifier circuit, an energy emission system, an energy receiving system and a commutating and voltage-stabilizing matching system. As a signal source, the adjustable active crystal oscillator array is used for generating high-frequency small signals with different energy transmission frequencies; the multistage amplifier circuit is used for performing stage-by-stage amplification on the high-frequency small signals generated by the adjustable active crystal oscillator array to provide energy for the energy emission system; the energy emission system is used for generating a high-frequency electromagnetic energy field; the energy receiving system is used for receiving the high-frequency electromagnetic energy field generated by the energy emission system and converting the high-frequency electromagnetic energy field into high-frequency electric energy; and the commutating and voltage-stabilizing matching system is used for performing rectifying and voltage-stabilizing on the high-frequency electric energy converted by the energy receiving system so as to match with the electric energy required by a load. The frequency-adjustable wireless electric energy transmission device disclosed by the invention has the characteristics of strong frequency selectivity, simple operations and the like, and is a new breakthrough for a frequency-adjustable wireless electric energy transmission system to move towards engineering.

The invention discloses a motor driven culvert lift fan gearing-down mechanism. A motor is placed in a symmetry plane of an airplane, a transmission shaft is horizontally arranged on a mode of being vertical to the symmetry plane of the airplane, the motor drives the transmission shaft through a gear reducer, two ends of the transmission shaft are coaxially connected with a bevel gear respectively, the bevel gears is vertical to and meshed with a bevel gear which is coaxially and fixedly connected with fans to drive the two culvert fans in wings to rotate. The motor driven culvert lift fan gearing-down mechanism overcomes twisting moment, can effectively decreases size of the bevel gears, obtains good aerodynamic efficiency, gives consideration to requirements for efficiency and weight, and is low in cost and strong in project applicability.

The invention discloses an ice melting power triangle based ice coating lead ice melting current obtaining method and belongs to the technology of ice melting of an ice coating lead. The ice melting power triangle based ice coating lead ice melting current obtaining method aims at solving the problems that the engineering applicability is not strong due to the fact that the error of the existing calculation method of ice melting power and ice melting currents is large. The ice melting power triangle based ice coating lead ice melting current obtaining method comprises the following steps of firstly establishing an ice melting power triangle; enabling power P required for ice melting to be equivalent to a sum of an ice coating absorption power Pr and wasted power Ps of other parts; calculating the ice melting power under different set ice melting time; calculating ice melting ice currents. The ice melting power triangle based ice coating lead ice melting current obtaining method can describe a relationship between the ice melting power P and an ice coating parameter with high accuracy, is simple in parameter calculation, enables the calculation error to be smaller than 10%, is strong in engineering applicability and is applicable to ice melting and ice proof of the ice coating lead.

The invention belongs to the technical field of communication, and provides a broadband transconductance enhanced low-noise amplifier which is used for solving the problems that an existing traditional gm-boost low-noise amplifier is narrow in bandwidth, and gain and noise cannot meet design requirements. A three-stage structure of a first-stage differential amplifier, a second-stage differential amplifier and a third-stage neutralizing capacitor amplifier is adopted, the two-stage differential amplifier is designed on the basis of a gm-boost structure, compared with a traditional gm-boost structure, the structure has the advantages that the input mode is improved, source input is changed into grid input, gain and isolation are increased, input impedance of the amplifier is changed gently, a large bandwidth can be obtained through matching, meanwhile, noise can be reduced, and ultra-low noise is achieved through the two-stage differential amplifier and optimal noise matching; moreover, the bandwidth of the low-noise amplifier is effectively expanded through the differential structure design of the two-stage differential amplifier, the input, the output and the inter-stage transformer matching, and the peak shifting design of the three-stage amplifier.

The invention discloses a method for broken-line aircraft approach guidance through a microwave landing system. The method comprises the following steps: establishing an airport landing point rectangular coordinate system, wherein the rectangular coordinate system is established with an airport landing point serving as an original point, the central line of a runner serves as the X axis of the coordinate system, the direction to the tail end of the runner serves as a positive direction, the Y axis and the X axis are located on a same horizontal plane, and the Z axis is directed to the sky; acquiring orientation, elevation and distance information of an aircraft during broken-line aircraft approach; and carrying out staged landing guidance through the microwave landing system according to aplanned flight route, wherein the intersection of an extension line of a selected glide angle of the aircraft in each stage and the X axis or the Y axis serves as a virtual landing point of the corresponding stage, and elevations of the aircraft relative to the virtual landing points are calculated, which are then reported, together with information of orientations and distances of the aircraft relative to the airport landing point, to a pilot and a flight control system for reference. The method is provided for the broken-line aircraft approach guidance through the microwave landing system,is applicable to an aircraft approach scenario with a fixed landing flight route, and particularly meets the requirements of autopilot landing or unmanned aerial vehicle landing.

The invention discloses a measurement method of the thickness of a subsurface damaged layer of a bucky optical material. The measurement method comprises the following steps: processing the surface of a sample by a magneto rheological process to form a specific cutting plane; cutting the subsurface damaged layer and reflecting a subsurface damage to the cutting plane; processing the cutting planewith a corrosive chemical agent to expose and amplify subsurface cracks on the cutting plane; measuring roughness values of different positions on the cutting plane by a roughness measurement tool toobtain a roughness value change curve; working out a height difference between a critical point or a climax and a starting point recorded in measurement process, or a height difference between two points projected on an original surface, i.e. the thickness d of the subsurface damaged layer of the sample, wherein the critical point or climax to level off is obtained from a roughness curve by the data processing. The measurement method can quickly and accurately measure optical samples of multiple surface shapes and multiple materials and can realize heavy-calibre and engineered application.

The invention discloses a device for the real-time measurement of the deep horizontal displacement and surface settlement of soil. The device comprises a displacement measurement sensor, a distributedoptical fiber demodulating device and a data analysis system. The displacement measurement sensor comprises a monitoring rod, a U-shaped optical fiber in the whole arranged on the monitoring rod, anda settlement measurement sensor arranged at an upper end part of the monitoring rod. The monitoring rod includes a measuring rod with a tip at a bottom and an elongated rod screwed to the upper partof the measuring rod. One end of the optical fiber is connected to the distributed optical fiber demodulating device, and the data analysis system is connected to the distributed optical fiber demodulating device. Compared with the traditional monitoring technology, the technology of the invention has the advantages that drilling is not needed, the measuring rod is vertically punched into the soilsection by section by using a static load extrusion method, the construction is convenient and rapid, the monitoring rod and the optical fiber can be recycled and reused after a project is finished,the design is simple, settlement monitoring and horizontal displacement monitoring are integrated into one body, the measuring speed is fast, the display is visual, and the engineering application ishigh.