54results about How to "In line with the trend of miniaturization" patented technology

A nanometer ceramic material dopant, medium material of ceramic capacitor and their production are disclosed. The formula of the dopant consists of aA.bB.cC.dR2 O3.eSiO2; A contains Na2O; B contains one or multiple of MgO and CaO; C contains one or multiple of MnO2 and Co3O4; R contains one of multiple of Y, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, among them a, b, c, d and e are coefficient, by computing mol%, 0<=a<=10%, 0<=b<=25%, 0<=c<=15%, 20%<=d<=60%, 10%<=e<=50% and b and c can't be zero at same time. Its advantages include large capacity, adjustable material formula, low sintering temperature, less medium loss, high dielectric constant and better reliability.

The invention discloses a distributed microphone array multi-sound-source positioning system in a reverberation room. The system mainly solves the problem that the number of microphone array sound sources in the reverberation room is always greater than the number of microphones. The distributed microphone array multi-sound-source positioning system in a reverberation room is characterized by comprising a microphone array consisting of M microphones and a positioning system, wherein a plurality of instructions are stored in the positioning; the instructions are loaded by a processor and restores a block sparse signal by an observation signal X received by M microphones and a compressed observation matrix; and the sparse support set of the block sparse signal S in the space-frequency domaincorresponds to the number and the positions of actual sound sources. The system positions multiple sound sources by using the distributed microphone array having an underdetermined number of microphones in the reverberation room, is not constrained by the array type, and greatly reduces the size of the array compared with current massive arrays with practical values, thereby reducing hardware cost and computational burden.

The invention relates to the sensing technology field and discloses a three-dimensional sensing system based on a vertical cavity surface transmission laser device array. The system comprises a signaltransmission sub-module, a signal receiving sub-module, an optical path adjustment module and a data processing module, wherein the signal transmission submodule is used for transmitting a laser signal to a target under the first condition, the signal receiving submodule is used for receiving the laser signal reflected by the target under the second condition, the optical path adjustment module is used for shaping the laser transmitted by the signal transmission sub-module into parallel light which is then transmitted to the target and used for shaping the laser reflected by the target into parallel light which is then transmitted to the signal receiving sub-module, and the data processing module is used for analyzing and processing the laser signal reflected by the target. The system isadvantaged in that both the signal transmission sub-module and the signal receiving sub-module are vertical cavity surface transmission laser device (VCSEL) arrays, the signal transmission sub-moduleand the signal receiving sub-module are integrated on the same motherboard, and the integration degree is relatively high.

The invention relates to a pitting corrosion method for aluminum foil. The pitting corrosion method comprises N stages of pitting corrosion treatment and N-1 times of stripping treatment, wherein N is an integer which is equal to or greater than two. Stripping treatment is conducted once between every two stages of pitting corrosion treatment. Each stage of pitting corrosion treatment comprises the steps that the aluminum foil is placed in corrosive liquid containing sulfuric acid and hydrochloric acid so as to be soaked, and currents are applied for electrolytic corrosion at the same time. Each time of stripping treatment comprises the step that the aluminum foil is placed in a fluosilicic acid solution so as to be soaked. The invention further relates to a preparation method of etched foil. The preparation method comprises the steps of pretreatment, pitting corrosion, hole-expanding corrosion and aftertreatment, and the step of pitting corrosion is conducted through the pitting corrosion method. By adoption of the pitting corrosion method, the uniformity and number of pits of the aluminum foil can be improved, and thus the specific volume of the etched foil is improved; and the pitting corrosion method has the advantages that the pitting corrosion method is easy to realize, the thickness is decreased, and the size of a capacitor can be reduced easily.

The invention discloses a multi-sound source localization method based on distributed microphone arrays in a reverberation room, and mainly solves the problem that the number of microphone array soundsources in the reverberant room is always larger than that of microphones. The method is mainly implemented by steps as follows: (1) constructing a compressed sensing localization algorithm accordingto characteristics of reverberation multi-sound source signal propagation and signal reception of the microphones; (2) constructing a compressed observation matrix with an Image method on the premisethat size of the room and positions of the microphones are known; (3) performing solution with a multi-sound source localization algorithm based on the microphone arrays with an undetermined number in the reverberation room by block sparsity optimization to obtain positions and number of the multiple sound sources in the space. Multi-sound source localization based on the distributed microphone arrays with an undetermined number in the reverberation room is achieved, the method is not constrained by formation, and compared with current mass arrays with practical value, the array size is greatly reduced, so that the hardware cost is reduced, and the computational burden is also reduced.

The invention relates to the technical field of laser, and discloses a laser radar device. The laser radar device comprises a signal transmitting module, a signal receiving module, an optical path adjusting module and a data processing module, wherein the signal transmitting module is used for transmitting a laser signal to a target object; the signal receiving module is integrated with the signaltransmitting module on the same laser radar main board, and is used for receiving the laser signal reflected by the target object; the optical path adjusting module is arranged on an optical path inwhich the laser signal locates, and is used for adjusting the optical path of laser; and the data processing module is connected with the signal receiving module, and is used for analyzing and processing the laser signal reflected by the target object. The signal transmitting module is a vertical cavity surface emitting laser (VCSEL) array. The signal transmitting module and the signal receiving module are integrated on the same laser radar main board, thereby greatly simplifying the structure of the laser radar device, reducing the size of the existing laser radar device, improving the integration degree, and conforming to the trend of miniaturization of the current laser radar.

The invention, which relates to the field of detecting technology, discloses a VCSEL-APD integrated chip and a preparation method thereof. The integrated chip comprises a signal transmitting unit, a signal receiving unit, a control unit and a data processing unit. The signal transmitting unit includes a first signal receiving structure layer and a first signal transmitting structure layer that arestacked; and the signal receiving unit includes a second signal receiving structure layer and a second signal transmitting structure layer that are laminated. Electrodes arranged on the first signaltransmitting structure layer are connected to one side of the signal transmitting unit electrically to form contact points; electrodes arranged on the second signal receiving structure layer are connected to one side of the signal receiving unit electrically to form contact points; and all contact points are connected to the control unit and the data processing unit respectively. The first signalreceiving structure layer and the second signal receiving structure layer are APD structure layers; and the first signal transmitting structure layer and the second signal transmitting structure layerare VCSEL structural layers. Therefore, a photoelectric sensing system with high integration of the VCSEL and APD is realized.

The invention provides a fuel transport module used in fuel cell, which includes a first substrate, a second substrate, and clapboard. The first substrate is provided with a reaction region; and the second substrate has a supply channel and a discharge channel which are connected to the reaction region; the clapboard is disposed between the first substrate and the second substrate, and has a first through hole and a second through hole, and the supply channel and the reaction region is connected by the first though hole, and the discharge channel and the reaction region is connected by the second though hole.

The invention provides a heat dissipation assembly, a device needing heat dissipation and a preparation method of the heat dissipation assembly. The heat dissipation assembly comprises an evaporationelement, a cooling element and a liquid absorption element located between the evaporation element and the cooling element. The liquid absorption element is of a micron-sized structure, the surface ofthe liquid absorption element is covered with a corrosion-resistant plating layer, the evaporation element and the cooling element form a sealed space used for containing a liquid working medium, theliquid absorption element is located in the sealed space, and the surface, facing the sealed space, of the evaporation element is a hydrophilic and hydrophobic mixed wetting surface. The heat dissipation assembly can have high temperature uniformity and a good cooling effect under the ultra-thin condition.

The invention relates to the technical field of carrier transferring, and particularly discloses a multi-section type carrier circulation switching machine. The machine comprises a rack, a transferring mechanism and two conveying mechanisms, and the transferring mechanism transfers a carrier between the two conveying mechanisms. Each conveying mechanism comprises a base plate, a first supporting plate, a second supporting plate, a first annular belt, a second annular belt, a first driving part and two jacking units, wherein the first supporting plate and the second supporting plate are arranged on the base plate and are parallel to each other, the first annular belt and the second annular belt are rotationally arranged on the first supporting plate and the second supporting plate respectively, and the first driving part is used for driving the annular belts, and the two jacking units are arranged on the two supporting plates; and each supporting plate is provided with a first containing hole, and each jacking unit comprises a second driving part and a supporting plate connected with the second driving part. The supporting plates of the two jacking units abut against and support thetwo ends of the carrier correspondingly. The second driving parts are mounted in the first containing holes, so that the thickness is reduced, the structural design is simplified, and the miniaturization development trend is met; and the jacking units jack up the carrier, the annular belts continuously convey the carrier, the transferring mechanism circularly moves the carrier between the two conveying mechanisms, and the conveying efficiency of the carrier is improved.

The invention relates to the field of low-voltage electric appliances, in particular to a circuit breaker. A button mechanism drives the circuit breaker to be closed / opened through an operating mechanism, and an electric mechanism drives the circuit breaker to be closed / opened through the button mechanism and / or the operating mechanism. The protection mechanism is matched with the operating mechanism to trigger the circuit breaker to trip. The wire inlet terminal and the wire outlet terminal are arranged at the two ends of the circuit breaker shell respectively. The operating mechanism is arranged in the middle of the circuit breaker shell. The arc extinguishing system and the protection mechanism are arranged between the operation mechanism and the wire inlet terminal side by side. The electric mechanism is arranged between the wire outlet terminal and the operating mechanism, and the electric mechanism and the wire outlet terminal are arranged on the same side of the button mechanism; the current sampling device is arranged between the protection mechanism and the wire inlet terminal, and the two ends of the sampling device are electrically connected with the protection mechanismand the wire inlet terminal respectively. The circuit breaker is reasonable in internal layout, compact in overall structure and high in safety.

The invention relates to a high-compactness low-temperature cofired ceramic package structure for packaging an electronic element and a high-compactness low-temperature cofired ceramic material thereof. The high-compactness low-temperature cofired ceramic package structure comprises a ceramic base, a silver layer and a metal cover. The ceramic base is made of the high-compactness low-temperature cofired ceramic material. A concave portion is arranged in the ceramic base and used for placing the electronic element, the silver layer is arranged on the top face of a lateral wall of the ceramic base, and a gold thin film is plated on the outer surface of the silver layer and used for jointing with the metal cover, so that the metal cover is arranged above the concave portion and covered on the concave portion. The silver layer is arranged on the top face of the lateral wall of the ceramic base in printing method, difficulty of arranging the silver layer is reduced, and a miniaturization trend of the packaging structure is fit.

The invention discloses a LTCC band-pass filter, comprising a base body, an input end electrode, an output end electrode, a grounding end electrode and an internal circuit. The internal circuit comprises three parallel resonators, three coupling inductors, two connecting capacitors and a source-load coupling capacitor, and also comprises three grounding polar plates, and one grounding polar plateadopts a defected ground structure. Conductors of the inductors and the capacitor elements are printed on the surface of LTCC raw porcelain, and a filter is manufactured through the processes of punching, hole filling, screen printing, laminating and sintering. An internal circuit adopts an LTCC vertical interconnection structure, an inductor adopts a double-layer laminated structure, a capacitoradopts an MIM type capacitor, and the inductor and the capacitor are connected through a vertical through hole. The band-pass filter is small in size, low in production cost, capable of being producedin batches, high in performance reliability due to the fact that the passband reaches 1GHz, the in-band insertion loss is small, three transmission zero points are introduced, out-of-band rejection is high, and the low-stop-band sideband is steep, and a mirror symmetry structure is adopted.

Antenna system comprises an antenna module and a radio frequency signal processing circuit. The antenna module comprises a first access point and a second access point. The antenna system also comprises a switching device for achieving respective connection of the first and second access points of the antenna module with the radio frequency signal processing circuit and a reference ground. The invention achieves switching between feeding points of the antenna module and grounding points in different cases by using the switching device; and produces two different antenna radiation mechanisms by using the same antenna module pattern and therefore can make full use of the radiation characteristics of the same antenna to produce different resonance and increase the bandwidth. In this way, the complexity of the antenna module pattern can be reduced, the wiring area of the antenna is narrowed, and the current trend of miniaturizing a terminal product is met.

An input and output linker used in portable communication device consists of a body case and circuit board in the case. The linker has an interface connetor on the body case. There are an inner side and outer side on the linker. Several conductors located on the outer side are used as interface for connecting input and output of peripheral unit. These conductors have their corresponding inner side connection points that can connect to the connection points located on side of cuicuit board.

The invention discloses a jack connection convergence socket based on a copper substrate. The socket comprises a base, first elastic contact bodies and a second elastic contact body. The base is provided with a plurality of upper holes side by side in the upper surface thereof, and the upper holes are provided with the first elastic contact bodies therein. A side hole is disposed in the lower halfof one side of the base, and the second elastic contact body is installed in the side hole. A threaded hole is arranged in the bottom surface of the base for positioning and fixing of the socket. Theupper holes are located in the upper half of the base. The side hole and the threaded hole are located in the lower half of the base. The upper holes, the side hole and the threaded hole are not in communication with one another. The socket of the invention adopts the whole copper material as the substrate to realize the large current convergence, and an adapted elastic spring retainer is installed in the hole after the precise drilling on one side so as to facilitate reliable connection with a wire crimping needle. The socket has the advantages of convenient use and maintenance. The "one-point multi-line restricted process" and hidden dangers brought by the flux residue are avoided. The production efficiency and processing reliability are increased.

The invention relates to the field of low-voltage electric appliances, particularly to a plug-in circuit breaker, which comprises a circuit breaker shell provided with at least one protection electrode assembly cavity and at least one protection electrode, wherein one end of the operation button of the protection electrode is inserted into the circuit breaker shell, the operation button, a first wire outlet terminal and a first wire inlet terminal are arranged at the two ends of the circuit breaker shell respectively, an arc extinguishing system is arranged in the middle of the protection electrode assembly cavity and located on one side of the first wire inlet terminal, an operation mechanism is arranged between the operation button and the arc extinguishing system, the protection mechanism is arranged on one side of the operation mechanism and located between the first wire outlet terminal and the arc extinguishing system, the plug-in circuit breaker is in a closed state, when a short circuit state or an overload state exists, the protection mechanism drives the operation mechanism to act so as to make the plug-in circuit breaker enter an opening state, and after a fault is eliminated, the operation button is pressed to drive the operation mechanism to act so as to make the plug-in circuit breaker enter a closed state. The plug-in circuit breaker is compact in structure and small in size.

The invention relates to a microwave sensor detection circuit for multiple detection scenes and a design method thereof. The design method comprises the following steps of S1, determining an optimal radio frequency point according to a microwave sensor structure and an application scene, and taking the optimal radio frequency point as a locking frequency of a phase-locked loop radio frequency source, S2, performing impedance matching on the microwave sensor and a phase-locked loop radio frequency source, S3, performing single-frequency-point radio frequency driving on the microwave sensor by adopting a phase-locked loop radio frequency source, S4, performing radio frequency power detection at the output end of the sensor, and reflecting the change of the to-be-measured parameter in real time according to the power loss change of the radio frequency signal on the microwave sensor, and S5, inputting analog parameter changes detected by the microwave sensor into the control chip through analog-to-digital conversion, and realizing real-time collection of change parameters of the microwave sensor. The invention provides a miniaturized, low-cost, low-power-consumption and high-precision detection circuit and a design method thereof.

The invention relates to a manufacturing method of a chip inductor with magnetic cores. The manufacturing method comprises the following steps: a) jointly injecting a non-conductive ferromagnetic matter and a volatile solvent to a die which is provided with a plurality of magnetic core mould cavities so as to form a plurality of magnetic core original shapes; b) after the magnetic core original shapes are condensed on the magnetic core mould cavities, demoulding; c) warming to be higher than vaporization temperature of the volatile solvent, wherein the volatile solvent in the magnetic core original shapes is vaporized to form a plurality of magnetic cores and a sunken winding part is formed on each magnetic core; d) respectively winding windings to the sunken winding parts of the magnetic cores. The chip inductor with the magnetic cores, which is small in volume and high in manufacturing yield, is manufactured by virtue of the method.

The invention provides an antenna structure which comprises a feed-in end, a first grounding end, a second grounding end, a first antenna and a second antenna. The first antenna comprises a first radiator and a second radiator which are sequentially connected with each other, the first radiator and the second radiator are connected with the feed-in end, the second antenna comprises a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion, the first radiation portion, the second radiation portion, the third radiation portion and the fourth radiation portion are sequentially connected with one another and form a semi-closed ring structure, the first radiation portion and the first radiator are arranged at intervals, the second radiation portion and the second radiator are arranged at intervals, and the first radiation portion and the fourth radiation portion are respectively connected with the first grounding end and the second grounding end. The antenna structure has the advantages that current signals are fed via the first antenna, the first antenna is coupled onto the second antenna, and accordingly wireless signals in various frequency bands can be received and transmitted by the antennas.

The invention provides a microstrip line. The microstrip line is applied in a circuit to play a role in impedance matching and is characterized in that: the microstrip line comprises an annular strip and two side strips, wherein the two side strips are arranged on the two sides of the annular strip and are respectively used for feeding in and feeding out an electromagnetic wave signal; and a groove is formed in the annular strip so as to increase an odd mode transmission route of the microstrip line. The invention also provides an impedance converter applying the microstrip line and a design method of the microstrip line; and the microstrip line designed by the method has good frequency response and greatly reduced size.

The invention relates to the field of low-voltage electric appliances, particularly to a plug-in circuit breaker, which comprises a protection electrode, wherein one end of the operation button of theprotection electrode is inserted into a circuit breaker shell, the operation button, a first wire outlet end and a first wire inlet terminal are arranged at the two ends of the circuit breaker shellrespectively, an arc extinguishing system is arranged in the middle of a protection electrode assembly cavity and located on one side of the first wire inlet terminal, an operation mechanism is arranged between the operation button and the arc extinguishing system, a protection mechanism is arranged between a first wire outlet terminal and the arc extinguishing system and located on one side of the operation mechanism, the plug-in circuit breaker is in a closed state, the operation mechanism is in a lock catch state, when a short circuit state or an overload state exists, the protection mechanism drives the operation mechanism to trip, the plug-in circuit breaker trips and the operation mechanism enters the tripping state, the operation button is pulled to move towards the opening direction, the operation mechanism is driven to recover to the lock catch state, and the plug-in circuit breaker enters the opening state. The plug-in circuit breaker is compact in structure and small in size.

The invention relates to the antenna field and especially relates to a ceramic antenna used for a mobile terminal and a production technology. The ceramic antenna comprises a ceramic rod, metal terminals located on two ends of the ceramic rod and a metal line winding a ceramic rod surface. A length of the ceramic rod is L, a diameter of the ceramic rod is D, a dielectric constant is Er, a speed oflight is c, a resonant frequency of the ceramic antenna is f, and a number of turns for the metal line to wind the ceramic rod surface is N, wherein the above parameters satisfy the following equation: N*pi*D+L=2*c / (Er*f+f). A production technology of the ceramic antenna is simple, a suitable range is wide and the size is small.

The invention discloses a TWS earphone with a low SAR value antenna structure, the TWS earphone comprises an earphone body, the earphone body comprises an upper half shell, a lower half shell, a PCB circuit board part and an antenna part, the upper half shell and the lower half shell cooperate with each other to form an accommodating cavity, and the PCB circuit board part is arranged in the accommodating cavity through a circuit board support; an independent installation groove is formed in the inner wall of the upper half shell, the antenna part is located at the top of the containing cavity and contained in the installation groove, the installation groove is provided with a sealing shielding piece, the antenna part and the PCB part are separated, and therefore electromagnetic interference between the antenna part and the PCB part is avoided. According to the TWS earphone with the low-SAR-value antenna structure, the structure of the Bluetooth antenna part is improved, so that the purposes of miniaturization, interference prevention, low SAR value and convenience in installation and mass production are achieved.