74results about How to "Guaranteed normal launch" patented technology

The invention discloses a laser radar based on diffraction optics and a scanning method of the laser radar. The laser radar based on diffraction optics comprises a laser transmitting unit, a diffraction optical element, a laser echo signal receiving unit, a signal control unit, a signal acquiring unit and an optical scanning unit. A single-laser structure is adopted. The laser radar based on diffraction optics has the characteristics of low cost and high sensitivity. The problem of high cost and swollen structure due to multiple lasers is solved, and the laser radar based on diffraction opticshas quite high market competitiveness in future market promotion.

The present invention provides a search method for a multi-constrained earth-moon transfer orbit cluster with equal launch intervals. The method is used for designing n earth-moon transfer orbit clusters meeting multiple constraints and with equal launch intervals within a launch day, and the method takes full advantage of a feature that rocket launch parameters can be adjusted. The method is completed through outer-layer and inner-layer search, and the inner-layer search comprises preliminary search and refine search of a single orbit. A preliminary orbit search algorithm adopts a simulated annealing simplex hybrid algorithm, and a refine orbit search algorithm adopts a class differential correction algorithm. Firstly, preliminary design and search of the orbit are carried out based on an improved conic curve splicing method, an initial orbit parameter value is rapidly calculated, the refine orbit search algorithm is used to carry out refine design on the orbit, and an earth-moon orbit meeting the constrained condition is obtained. The outer-layer search completes continuous multi-orbit search with equal launch intervals, so that n earth-moon transfer orbits meeting the multiple constrained conditions with equal launch intervals are finally obtained.

The invention relates to the field of touch control and discloses a system for achieving capacitance detection and electromagnetic detection. A transverse row of wires and a vertical row of wires included by a sensing antenna multiplex array are located in a touch area of a touch control screen panel, a capacitance and electromagnetic touch control chip is provided with a TX end, an RX end and an EM Detect end, one end of the TX end, one end of the RX end and one end of the EM Detect end are respectively provided with one chip lead in a multiplex mode, and the other end of the TX end, the other end of the RX end and the other end of the EM Detect end are connected with one end of the transverse row of the wires and one end of the vertical row of the wires. When capacitance touch detection is carried out on the system, all switches in a switch array are turned off, and the transverse row of the wires and the vertical row of the wires constitute sensors of a capacitance screen; when electromagnetic touch detection is carried out on the system, all the switches are turned on, and the transverse row of the wires and the vertical row of the wires constitute antenna loops of an electromagnetic screen; when a part of the switches are turned off and a part of the switches are turned on, a part of the transverse row of the wires and a part of the vertical row of the wires constitute the sensors of the capacitance screen, and a part of the transverse row of the wires and a part of the vertical row of the wires constitute the antenna loops of the electromagnetic screen. Compared with the prior art, time division multiplex access of capacitance detection and electromagnetic detection is achieved through one set of sensing antennas on the single chip.

The invention provides a CT (current transducer) energy acquisition-based ultrasonic bird repelling device for a series compensation platform, and can effectively prevent and control the problem of bird trouble of a series capacitor compensation device. In the ultrasonic bird repelling device, a circuit energy acquisition CT is adopted to supply power, large current passing through a circuit is converted into a required current, the current passes through an isolated CT realize electrical isolation, the high frequency part of power frequency current is filtered by virtue of a low-pass filter, direct current voltage is rectified and output by virtue of a rectifier, a high-frequency signal generator generates a high-frequency voltage signal between 16 and 25kHz immediately, and the high-frequency voltage signal is loaded to a piezoelectric ceramic plate of an ultrasonic speaker and is amplified to generate a high-volume ultrasonic wave which is between 16 and 25kHz and has a sound pressure level not lower than 90dB by virtue of the speaker. According to the bird repelling device, the energy acquisition CT is used as a power supply to guarantee stable high-power output, so that all-weather 24-hour uninterrupted large-area bird repelling is guaranteed; and a mode that two ultrasonic speakers are connected in parallel is adopted, and ultrasonic wave with variable frequencies is alternately and continuously generated, so that birds cannot adapt to the ultrasonic wave, and the durability of bird repelling effect is guaranteed.

The invention relates to manufacturing methods of back covers, particularly to a manufacturing method of a breakable launcher back cover of a weapon system. The method comprises firstly, fabricating a flange ring and processing mounting external threads at one end of the flange ring; secondly, fabricating a holder in an approximate skullcap shape; thirdly, making prepreg glass fiber cloth into type A composite material sealing pieces and type B composite material sealing pieces, putting a plurality of the type B composite material sealing pieces inside the holder, then putting a plurality of the type B composite material sealing pieces outside the holder and further putting a plurality of the type A composite material sealing pieces outside the holder; placing the holder with the stacked composite material sealing pieces inside a mould, performing compression molding, heating and pressurizing to achieve solidification forming; lastly, performing demoulding and forming slots in the inner side of the composite material sealing layer. The launcher back cover is breakable, and the roots of broken pieces are tied to the flange ring and avoid drop-off, so that normal launching can be guaranteed, and meanwhile floor cleanliness and tidiness of a launch site can be maintained.

Disclosed in the present invention are a mobile terminal and an NFC antenna, wherein the mobile terminal comprises: a terminal main body having a back on which a back longitudinal axis and a back horizontal axis are limited; and an NFC antenna located on the back of the terminal main body. At least one of the back longitudinal axis and the back horizontal axis of the terminal main body drills through the NFC antenna, and the NFC antenna is configured to be unsymmetrical relative to the at least one of the back longitudinal axis and the back horizontal axis. The mobile terminal according to the embodiments of the present invention has a smaller resonance frequency offset when processing a P2P operation, and has advantages such as high communication sensitivity, high communication success rate and good communication capability.

The invention discloses a heat shrinkage film take-up device. The heat shrinkage film take-up device comprises a frame, driving gears and a first rack, wherein a take-up shaft is arranged on the frame; one end of the take-up shaft is rotationally connected with the frame, and the other end of the take-up shaft is a cantilevered end; a film roll with axial freedom sleeves the take-up shaft; a compression roller with vertical freedom only is arranged above the take-up shaft; a vertically upward second rack is arranged at the upper end of the compression roller; the second rack comprises a toothed part and a non-toothed part positioned at the lower end of the toothed part; the driving gears mesh with the toothed part; the first rack is horizontally arranged on the side surface of the take-up shaft; a transmission mechanism capable for converting circular motion of the driving gears into horizontal motion of the second rack is arranged on the frame; a limiting buckle allowing the first rack to penetrate is arranged on the frame; a first elastic piece is arranged between the limiting buckle and the end, close to the side of the take-up shaft, of the first rack; and the first rack can be driven by the first elastic piece to push the film roll out of the take-up shaft. By adoption of the scheme, the problem that automatic unrolling cannot be finished in the prior art can be effectively solved.

The invention relates to a variable band width frequency-shift and frequency-selective digital repeater which comprises a base station, an access machine and a remote machine, wherein the access machine comprises a downlink duplexer, a step attenuator, a downlink frequency shifter, a power amplifier and an uplink duplexer that are sequentially connected with each other in a downlink way; the access machine further comprises a low noise amplifier, an uplink frequency shifter and a downlink duplexer that are sequentially connected with each other in an uplink way; the uplink frequency shifter and the downlink frequency shifter are internally cured with frequency conversion program; the remote machine includes a downlink duplexer, a downlink low noise power amplifier, a downlink digital frequency-shift and frequency-selective module, a downlink companding frequency-shift unit and a downlink power amplifier which are sequentially connected with each other in a downlink way; the remote machine further includes an uplink duplexer, an uplink low noise power amplifier, an uplink digital frequency-shift and frequency-selective module, an uplink companding frequency-shift unit and an uplinkpower amplifier that are sequentially connected with each other in an uplink way; and the uplink and the downlink digital frequency-shift and frequency-selective modules are internally cured with frequency-shift and frequency-selective program. The digital repeater can achieve the aim of controlling band width by the frequency conversion program and the frequency-shift and frequency-selective program, thus having strong noise suppression capability and low frequency interference risk.

An embodiment of the invention relates to the technical field of semiconductor lasers, and more particularly to a semiconductor laser driving method and driving circuit for solving the problems of complicated structure and high cost as a speckle eliminating device is added mostly outside a laser in the prior art. In the embodiment of the invention, driving signals are generated in accordance with driving periods of a semiconductor laser, one driving period includes a high level duration segment and a low level duration segment, and driving signals in the high level duration segment of one driving period are composed of N pulses, where N is an integer greater than one; peak values of at least two of the N pulses are not equal, and/or at least two pulse intervals in N-1 pulse intervals formed by the N pulses are not equal; and the driving signals are outputted to the semiconductor laser. Therefore, the speckle suppression or elimination can be performed without the addition of a speckle eliminating device, and the structural complexity is reduced.

The invention relates to the technical field of floor drains, in particular to an odor-resistant floor drain with a gas-preventive barrel. By the aid of the odor-resistant floor drain, the technical problem of poor odor-resistant effects of existing floor drains in the prior art can be solved. The odor-resistant floor drain comprises a floor drain, a floor drain cover and a floater. The floor drain cover is arranged at an opening in the upper end of the floor drain; the lower end of the floor drain is connected with a drain pipe; the floater is arranged inside the floor drain and is arranged on the upper side of the drain pipe, the gas-preventive barrel is arranged at the lower end of the floater and sleeves the drain pipe, and the bottom of the floater is matched with the upper side of the drain pipe and the inner wall of the floor drain. The odor-resistant floor drain has the advantages that the gas-preventive barrel is arranged at the bottom of the floor drain, can be opened when sufficient water flows through the gas-preventive barrel and can be closed when no water flows through the gas-preventive barrel or only insufficient water flows through the gas-preventive barrel, accordingly, sealing effects can be realized, and the technical problem of the poor odor-resistant effects of the existing floor drains can be solved.

The invention relates to the technical field of floor drains, in particular to a floater and a deodorizing floor drain. The floater comprises a floater body and a functional part which is arranged in the floater body and used for stretching into a water outlet of a shell of the deodorizing floor drain. When buoyancy generated when water in the shell of the floor drain acts on the floater can overcome the gravity of the floater, the floater floats so that the portion between the outer surface of the functional part and the water outlet is switched from a sealed matching state to a separated state, and water can flow out from the water outlet of the floor drain. By means of the floor drain of the floater, the peculiar smell backflow problem of the floor drain can be effectively solved.

The invention relates to a novel compressed air purifying system based on Internet of Things. The novel compressed air purifying system based on Internet of Things comprises a central control unit and a purifying mechanism which are in wireless connection, wherein the purifying mechanism comprises an air compression mechanism, a cooling separation mechanism, a storage mechanism and a filtering and purifying mechanism which are in sequential connection. The novel compressed air purifying system based on Internet of Things has the advantages that by the aid of a resonance circuit consisting of a second inductor, a third inductor, an adjustable capacitor and a third capacitor in a wireless transmission circuit, signal transmission within specific frequency can be guaranteed, so that anti-interference capability for external signals is improved maximally; the adjustable capacitor is used for frequency trimming, and accordingly wireless transmission circuit practicality is improved; a dry filter and a drying machine are used for drying and filtering compressed air, and a precision filter is used for filtering the compressed air sufficiently, so that compressed air quality is guaranteed sufficiently; since heat in an aftercooler is absorbed by a heat absorbing pipeline, system energy utilization rate is increased.

The invention discloses a wireless charging device and a charging method. The invention relates to a wireless charging device. The wireless charging device comprises an energy transmitting device, a position adjusting device for installing the energy transmitting device, a first acquisition device for acquiring output energy information transmitted by the energy transmitting device, a second acquisition device, a processor communicating with the first acquisition device and the second acquisition device, and a controller which communicates with the processor and the position adjusting device and is used for controlling the position adjusting device according to the real-time energy loss calculated by the processor, and adjusting the energy transmitting device and to-be-charged equipment to a target relative position where the real-time energy loss is equal to a set value, wherein the second acquisition device is used for acquiring received energy information received by an energy receiving device. The wireless charging device and the charging method disclosed by the invention are high in charging efficiency and low in heat emission.

The invention relates to the technical field of floor drains, in particular to a through-type deodorization floor drain with a float. The through-type deodorization floor drain is used for solving the technical problem that in the prior art, the deodorization effect of an existing floor drain is bad. The through-type deodorization floor drain comprises a shell, a cover and the float; the end, facing the cover, of the shell is open, and a water outlet is formed in the end, far away from the cover, of the shell; the float is arranged in an inner cavity of the shell and separably connected to the water outlet of the shell in an abutting mode; the cover is arranged on the shell and provided with a water inlet communicated with the inner cavity of the shell; the middle of the shell is provided with a float channel for allowing the float to stretch out. The through-type deodorization floor drain with the float can effectively solve the technical problem that the deodorization effect of the floor drain is bad.

The invention discloses an offshore launching platform capable of bearing a plurality of unmanned aerial vehicles, which belongs to the technical field of unmanned aerial vehicle working platforms. The offshore launching platform capable of bearing the plurality of unmanned aerial vehicles comprises a base, a protective cover arranged on the base, a multi-stage parking device and an unmanned aerial vehicle launching runway; the protective cover is provided with a transmitting window and used for launching unmanned aerial vehicles; the multi-stage parking device is connected with the base through a rotating structure and a lifting mechanism in sequence; the multi-stage parking device comprises a fixing shaft and a plurality of parking positions fixedly arranged on the fixing shaft and is used for parking the unmanned aerial vehicles; the unmanned aerial vehicle launching runway is connected with the base through an angle adjusting structure, and the angle adjusting structure is used foradjusting the inclination angle of the unmanned aerial vehicle launching runway. The offshore launching platform capable of bearing the multiple unmanned aerial vehicles can provide space for parkingof the multiple unmanned aerial vehicles, the number of the unmanned aerial vehicles borne by the unmanned aerial vehicle launching platform is effectively increased, the cost is reduced, and resources are saved.