742results about How to "Conducive to miniaturization design" patented technology

The invention discloses a bias output three freedom spherical parallel mechanism with a central spherical hinge, which consists of a three freedom spherical parallel mechanism, the central spherical hinge and a bias output link unit, and is characterized in that the lower end of a lower support bar (3) of the central spherical hinge is fixed to a fixed platform (1); the axis of the lower support bar (3) passes through the central point of the fixed platform (1); a cylindrical straight output link (8) passes through the center of a moving platform (7), is fixed to the moving platform or connected with the moving platform through a prismatic pair; the upper end of the straight output link (8) is fixedly connected with a bias output link (9) at the point of intersection (A) of central lines; the axial included angle alpha h of the cylindrical straight output link (8) and the bias output link (9) ranges from 0 DEG to100 DEG; and the bias direction is random. The bias output three freedom spherical parallel mechanism has the advantages of high restriction, high rigidity, large working space, unloading function and greatly improved mechanical property of mechanism.

The present application provides a male connector, a female connector, a connector assembly and a communication equipment. The male connector comprises a male conductive base, wherein a plurality of first through holes are arranged on the male conductive base; a plurality of shielding sleeves which are fixed on the male conductive base and electrically connected with the male conductive base, theshielding sleeves have a sleeve structure, a front-back through shielding cavity is formed in the shielding sleeves, a plurality of the shielding sleeves are corresponding to a plurality of first through holes in a one-to-one way and the shielding cavity is communicated with the corresponding first through holes; and a plurality of male differential pairs, wherein a plurality of male differentialpairs are corresponding to a plurality of shielding sleeves in a one-to-one way, the male differential pairs are fixed in the shielding cavity by penetrating through the first through holes and the male differential pairs are electrically insulated from the male conductive base and the shielding sleeves. Compared with the connectors in the prior art, the connector has the advantages of convenientprocessing, high mechanical strength and good shielding effect.

The invention discloses a catalyst for preparing methane by low-temperature oxidization of methane and a preparation method and application thereof. The catalyst consists of a molecular sieve carrier and an active ingredient supported on the carrier; and the active ingredient comprises copper oxide or copper oxide and noble metal compound active ingredient, wherein the mass ratio of the molecular sieve to the copper in the copper oxide to the noble metal is 100:1-5:0-1. The molecular sieve serves as the carrier, and the preparation method for the catalyst comprises the following steps of: mixing a precursor copper acetate of the basic active ingredient or/and a metal precursor of the noble metal active ingredient in a certain ratio to prepare solution; and soaking the molecular sieve in the solution to allow the metals of the active ingredient to be supported on the carrier, and washing, drying and baking to prepare the catalyst. The catalyst can catalyze the methane oxidation at low temperature to prepare the methanol; a catalytic reaction system is simple; and the yield and selectivity of the target product methanol are high.

A pan-tilt 100 comprsies a driving mechanism 40 comprising a rotor assembly 43, an installing member 432 used for bearing an external load, a driving member arranged on the installing member 431; a stator rotatably abutting against the driving member 433 and comprising a spherical surface 411 contacted with the driving member 433, wherein the driving member 433 can drive the installing member 431 to rotate relative to the stator 41; and a first sensor 62 arranged on the rotor assembly 43 used for deteting the motion state of the rotor assembly 43, wherein a detection result of the first sensor 62 can be used to adjust the motion of the rotor assembly 43.

The invention discloses an ultra-wideband radar pulse transmitter and method, relating to a pulse signal generating technology. The pulse transmitter comprises a microwave audion, an SRD (Step Recovery Diode) and a Scotty diode. A signal with a rapider edge is formed by utilizing switching characteristic of the microwave audion through the charging and discharging process of a capacitor so that the SRD is changed from a switch-on state to a switch-off state, and an ultra-wideband Gaussian narrow pulse is generated. By changing the power supply voltage and the charging and discharging capacitance, the width and the amplitude of the Gaussian pulse can be adjusted. The pulse transmitter provided by the invention comprises a subnanosecond pulse circuit, a nanosecond pulse circuit, a single-period pulse circuit or a bipolar pair pulse circuit, and the generated pulse signal has good waveform quality and can meet the application needs of different pulse radar transmitter systems.

The invention discloses a phased array beam tracking method. The method includes the steps that an annular syntype phased array traverses all wave potentials on an azimuth by controlling beams on the azimuth, and a wave potential of the azimuth where a tracking target is located is determined; the wave potential on the azimuth is controlled to point to the wave potential where the tracking target is located, and the wave potential serves as a center wave potential of tracking loop scanning; the center wave potential serves as the center of the annular syntype phased array, tracking loop scanning is carried out on three wave potentials in adjacent airspaces of the tracking target, and target echo energy is recorded; the annular syntype phased array compares the magnitudes of the target echo energy of the three wave potentials in the adjacent airspace of the tracking target, and the wave potential where the target echo energy is largest is determined to be a center wave potential of next tracking circulating scanning. The direction of the target is determined according to the magnitudes of the target echo energy, the phased array achieves a beam tracking function on the azimuth, complexity of phased array design is effectively reduced, design space is reduced and miniaturization design of the phased array is facilitated.

The invention relates to a millimeter wave active antenna unit and an inter-PCB (Printed Circuit Board) interconnection structure. The inter-PCB interconnection structure comprises a main board and anAIP (Antenna in package) antenna module. The main board is a first multilayer PCB and provided with a signal transmission line and a first pad electrically connected with the signal transmission line. The AIP antenna module is a second multilayer PCB and provided with a second pad, an impedance matching transmission branch, an impedance line and a signal processing circuit. The main board and theAIP antenna module adopts a mode of direct welding interconnection between the multilayer PCBs, thereby saving an expensive millimeter wave interconnection assembly on the one hand, and thus being very low in cost; On the other hand, the mode of direct welding between the boards improves the reliability of the product, the interconnection design between the multilayer PCBs can be realized, and the integration between the multilayer PCBs is greatly improved, thereby being conducive to the miniaturization design of millimeter wave equipment. In addition, the second pad and the signal processingcircuit are provided with the impedance matching transformation branch and the impedance line therebetween, thereby being suitable for a wider frequency range and a wider lamination number range.

The invention discloses a system for receiving an ultra wide band pulsed radar, which is composed of an ultra wide band receiver and a control unit, wherein the ultra wide band receiver takes a sampling phase detector (SPD) as the key component of a receiver sampling gate; a microwave triode is used for generating sampling pulses by combining with a capacitance charging and discharging process; and the sampling bandwidth is 6GHz; and the control unit takes a PIC (peripheral interface controller) singlechip as a core and provides a sampling clock signal for the receiver by combining with a programmable time delay chip. In the system for receiving the ultra wide band non-carrier frequency pulsed radar, the waveform of an ultra wide band signal from an antenna can be accurately reconstructed so as to collect signals by low-speed A/D and lower system cost.

The invention relates to an SVPWM (Space Vector Pulse Width Modulation) control method for a Z-source inverter, belongs to the technical field of inverter control and solves the problem of generation of a larger inductive current ripple caused by the existing SVPWM control method for the Z-source inverter. The states of three switching tubes of an upper bridge arm are represented by eight vectors, and the eight vectors divide a control interval into six sectors. For taking the third (III) sector as an example, the vectors taking actions in Ts in each SVPWM period are allocated sequentially from left to right as 111, 110, 100, 000, 000, 100, 110 and 111, wherein the total acting time of a traditional zero vector is set as T0; the total acting time of a direct-through zero vector is set as t0 which is greater than 0 and less than or equal to T0; and the total acting time t0 of the direct-through zero vector is divided into four sections inserted between the acting times of the traditional zero vector and an adjacent effective vector, thereby realizing SVPWM control of the Z-source inverter. The SVPWM control method is suitable for the SVPWM control of the Z-source inverter.

The invention discloses an electronic equipment control method and a system comprising a touch terminal. The method is characterized in that through wireless communication of the touch terminal and electronic equipment, horizontal switching of a display interface of the electronic equipment is controlled by horizontal sliding on the touch region of the touch terminal, and vertical switching of the display interface of the electronic equipment is controlled by vertical sliding on the touch region of the touch terminal. The method and the system have the following beneficial effects: horizontal switching and vertical switching of the display interface are achieved by utilizing horizontal sliding touch and vertical sliding touch of the touch terminal, so that the user feels more convenient and time-saving and trouble-saving when using the touch terminal; turn-on adjustment of the volume is achieved through sliding touch for moving two points upward, and turn-down adjustment of the volume is achieved through sliding touch for moving the points downward; and narrowing of the display interface is achieved through sliding touch for ensuring the two points to draw close inward, and amplification of the display interface is achieved through sliding touch for separating the two points outward, thus further perfecting the use functions of the touch terminal.

The invention discloses a miniature holder type mobile phone. The miniature holder mobile phone comprises an intelligent mobile phone, a miniature holder and a lens module. The miniature holder is provided with three or more stages of rocker arms, which comprise driving arms and moving arms. The moving arm of the previous stage of the rocker arm is the driving arm of the next stage of the rocker arm; and the intelligent mobile phone is set as the driving arm of the first stage of the rocker arm. When the number of lens groups is set to be two or more, a binocular vision system is formed, and an active rotation offset motion of the miniature holder can be controlled through a program to obtain depth-of-field information and three-dimensional information of an object so as to simulate humanvision for establishing stereoscopic vision. By implementing the technical scheme of the miniature holder, a technical scheme for achieving a full-screen mobile phone is obtained incidentally.

The present invention discloses an electronic device with a fingerprint identification function. The electronic device comprises a camera module comprising a camera and a transparent cover plate located at one side of a camera light inlet, wherein the transparent cover plate comprises a transparent substrate and a transparent electrode located on the surface of the transparent substrate; an induction chip electrically connected with the transparent electrode and used for obtaining the fingerprint texture information of a finger touching the transparent cover plate via the transparent electrode; a processor electrically connected with a fingerprint detection chip and used for controlling the electronic device to execute the preset functions according to the fingerprint texture information. According to the electronic device of the technical scheme of the present invention, the transparent electrode is arranged on the surface of the transparent substrate of the transparent cover plate of the camera module, and the fingerprint texture information of the finger is obtained by the transparent electrode, so that the integration degree is improved, the slotting on a display panel and a fingerprint identification module are not needed, the manufacturing cost is reduced, and the miniaturization design of the electronic device is convenient.

The invention discloses a containment passive pressure suppression system. A pressure suppression pool of the system comprises a water space and an air space, wherein the water space is arranged around a reactor pit and communicates with a containment drywell; cooling water is contained in the water space; the initial water level in the water space is higher than a reactor core in the reactor pit; the air space is arranged around the water space and communicates with the water space. The water space and the air space are in transverse arrangement, so that the height of the pressure suppression pool is reduced, so that the space volume of the pressure suppression pool occupied by the containment is reduced; the dimension of the containment can be further reduced; meanwhile, the duplex isolation function can be realized; the realization of the radiation shielding function is facilitated, so that the containment can use the single layer structure; the structure is simpler; the small-size design of the containment of a marine nuclear power station is facilitated. In addition, the air isolation is realized between the water space and the air space; the air-water isolation can also be ensured in the swinging environment.

The invention discloses a hidden bracket, which comprises an underframe, wherein the underframe is assembled with guide rails fixedly arranged on a cabinet body in a sliding way to realize the extension and hiding of the bracket; a support is hinged to the underframe, is retracted when the bracket is hidden, is expanded when the bracket extends, and comprises support rods extending along straight lines. The hidden bracket is characterized in that the support also comprises underframe connecting rods, wherein one end of each underframe connecting rod is integrated or fixedly connected with the corresponding support rod, and the other end of each underframe connecting rod is correspondingly hinged to the underframe; hinging central axes on hinged parts, correspondingly hinged to the underframe, on the support rods and the underframe connecting rods are eccentric; the underframe, the underframe connecting rods and the support rods form a connecting rod mechanism capable of retracting the support rods to positions at which the extension directions of the support rods are parallel to the sliding direction of the underframe when the support is retracted. According to the bracket, the support rods can be retracted to the positions at which the extension directions of the support rods are parallel to the sliding direction of the underframe, so that the space occupied by the support is maximally reduced, and the requirement of the bracket on the space of the cabinet body is lowered.

The embodiment of the invention discloses an antenna which comprises two antenna arrays. Each antenna array comprises two microstrip antenna units, the feed magnitudes of every two microstrip antenna units are equal, the feed phase difference between the every two microstrip antenna units is 180 degrees, the work frequencies of every two microstrip antenna units are the same, and the distance between the centers of every two microstrip antenna units ranges from 0.5 wave length to 1 wave length of the center frequency of a work frequency band of any one microstrip antenna unit. The included angle between the two antenna arrays ranges from 30 to 150 degrees in the same plane, and the distance between the middle point of the distance between the centers of the two microstrip antenna units of the first antenna array and the middle point of the distance between the centers of the two microstrip antenna units of the second antenna array is smaller than or equal to 3 wave lengths of the center frequency of the work frequency band of the microstrip antenna unit with the shortest wave length. The embodiment of the invention further discloses a wireless signal transmit-receive system. By means of the antenna and the wireless signal transmit-receive system, the uniformity of antenna radiation signals can be improved, and the blind area of radiation coverage is reduced.

The invention provides laser projection equipment. The laser projection equipment comprises a light combination module and a light splitting module, wherein the light combination module comprises a first laser light source group, a quarter-wave plate, a first spectroscope and a reflector; the first laser light source group comprises a first laser light source and a second laser light source, which are oppositely arranged and are used for respectively transmitting first polarized light and second polarized light with the same polarization; the first spectroscope is inclined to the quarter-wave plate for reflecting the second polarized light to penetrate the quarter-wave plate and reflecting the first polarized light; the reflector is parallel to the quarter-wave plate and is adjacent to the first laser light source group for reflecting the second polarized light to the quarter-wave plate so as to cause the second polarized light to penetrate through the first spectroscope and to be combined with the first polarized light to form laser beam after penetrating through the quarter-wave plate. The light splitting module is used for receiving the laser beam so as to split the laser beam into a plurality of imaging colored light.

The invention discloses a low earth orbit satellite data transmission system, comprising a low earth orbit satellite transceiving end and a ground user terminal. The ground user terminal sends position information to the low earth orbit satellite transceiving end. A sending antenna of the low earth orbit satellite transceiving end points to the ground user terminal and sends service data.