178results about How to "Meet miniaturization requirements" patented technology

The invention provides a millimeter wave miniaturized multichannel transceiving component device and a phase compensation method thereof. The transceiving component device of the invention comprises a transmitting branch, a receiving branch, a switch, a power splitting circuit and a metal box body, belonging to the radar component technical field. The transceiving component device is realized by a millimeter wave periplanatic integrated circuit based on MMIC (millimeter wave monolithic integrated circuit) technology, and no source phase-shift device is arranged inside a transceiving component. The interchannel phase compensation method of the invention is to utilize a micro strip loading high dielectric constant medium which plays a part in cascade connection in the transceiving component. Phase error compensation within the range of 0 to 360 DEG can be realized by selecting different loading media, and the amplitude consistency is not affected. The invention has the advantages of simple and convenient debugging, skillful design, miniaturization and so on and is a transceiving component device with strong operability and effectiveness and a phase compensation method thereof.

The invention discloses a low-frequency multidirectional vibration energy recovery device, which comprises a mass block and an outer frame, wherein the mass block is positioned in the outer frame; the mass block is connected with the outer frame by foldable elastic beams; each foldable elastic beam is provided with a piezoelectric sheet; the periphery of the mass block is provided with the foldable elastic beams with the same folding mode; and the folding mode of the foldable elastic beams is characterized by folding by layers from outside to inside and decreasing the folding length progressively. The device can be used for low-frequency vibration energy recovery in various large machine engine bases or vibration elements, automobile engines, blenders, washing machines and various micro-structures, and can provide electric power for various types of portable equipment, wireless sensors and micro electro mechanical systems.

The invention relates to a vacuum sealing packaging structure and a packaging method for an infrared focal plane detector chip. The packaging method comprises the following specific steps of: firstly, mounting the infrared focal plane detector chip and a getter in a chamber of a packaging casing and enabling the getter to be positioned between the infrared focal plane detector chip and the bottom of the packaging casing; and secondly, connecting an optical window with the packaging casing in a sealing manner to form a vacuum sealing chamber. According to the vacuum sealing packaging structure and the packaging method disclosed by the invention, the volume of the vacuum sealing packaging structure of the infrared focal plane detector chip is remarkably reduced; a traditional parallel mounting mode of the infrared focal plane detector chip and the getter is changed into a vertical mounting mode; and the requirement of portable infrared thermal imaging application to the packaging structure of the infrared focal plane detector chip on miniaturization is met. In addition, the packaging structure also provides a concise and effective thermal insulating structure and realizes an insulated work mode of the concise and effective thermal insulating structure; and the packaging structure is concise in structure and low in cost.

The invention provides an antenna structure integrated in a metal shell. The antenna structure comprises a metal shell of an electronic device, a circuit substrate arranged in the metal shell, and an antenna radiation circuit, wherein the antenna radiation circuit with a certain shape is formed by bending of a long bar-shaped metal and is arranged at the circuit substrate. The metal shell includes a plurality of side surfaces; and a slit is arranged at one of the multiple side surfaces. One end of the antenna radiation circuit is contacted with the side surface provided with the slit and approaches one end of the slit; and the side surface that is not contacted with the antenna radiation circuit and approaches the other end of the slit is grounded. With the antenna structure, because the slit is arranged at one side of the metal shell, and one end of the side is contacted with the antenna radiation circuit and the other end is grounded, the slit of the shell is used as one part of the antenna radiation circuit, so that a problem that the existing antenna has to avoid to use a shell made of the metal material can be solved; and thus the antenna has the good characteristics and the product miniaturization requirement is also met.

The invention provides a method for locally burying a PCB (Printed Circuit Board) daughter board in a PCB. The method comprises the following steps of: firstly, providing a PCB mother board, the PCB daughter board to be buried and a high-flow prepreg, wherein a burying groove corresponding to the PCB daughter board is arranged on the PCB mother board, a plurality of locating holes are formed in the burying groove, a plurality of through holes corresponding to the locating holes are formed on the PCB daughter board, a plurality of penetration holes corresponding to the plurality of through holes are formed on the high-flow prepreg, and the depth of the burying groove is equal to the thickness sum of the PCB daughter board and the high-flow prepreg; secondly, putting the high-flow prepreg and the PCB daughter board in the burying groove in sequence; thirdly, sequentially penetrating the through holes on the PCB daughter board and the penetration holes on the high-flow prepreg by pins, and then fixing the pins in the locating holes in the burying groove; and fourthly, performing high-temperature laminating to connect the PCB daughter board with the PCB mother board so as to ensure that the upper surface of the PCB daughter board is located in the same plane with the upper surface of the PCB mother board.

The invention provides a liquid cooling rack of a miniature array device. Flow dividers are connected with an external cooling liquid source through self-sealing bayonet liquid connectors. Main flow channels of the flow dividers are provided with branch flow channels for dividing cooling liquid to module cold plates and power cold plates. The module cold plates are communicated with the flow dividers through blind insertion liquid connectors. A mounting space for a receiving and dispatching module is formed between the adjacent module cold plates. The two power cold plates are fixedly arranged above and below the integration of the module cold plates respectively. The power cold plates are connected with a digital processing module integrated liquid cooling structure through self-sealing blind insertion liquid connectors. The liquid cooling rack has the functions of complex flow channel organization, heat dissipation and force bearing; through a compact and ingenious structural layout and flow channel design, heat dissipation of the receiving and dispatching module with high heating flux density is achieved through limited liquid cooling resources; meanwhile, effective heat management of multiple functional modules with differentiated heat dissipation requirements is achieved, and the miniaturization requirement for platform loading is met.

The invention relates to a miniature large-field-of-view laser fuze transmitting-receiving optical system. The miniature large-field-of-view laser fuze transmitting-receiving optical system is composed of three transmitting optical systems and three receiving optical systems; the three transmitting optical systems and the three receiving optical systems are arranged in series in a circumferential direction; each transmitting optical system and each receiving optical system are arranged adjacently and alternately; an included angle between the central optical axes of two adjacent transmitting optical systems is 120 degrees; an included angle between the central optical axes of two adjacent receiving optical systems is 120 degrees; in an arc vector direction, each transmitting optical system uses a 120-degree transmitting field of view, and each receiving optical system uses a 120-degree transmitting field of view; and in a meridian direction, each transmitting optical system uses a 1-degree transmitting field of view, and each receiving optical system uses a 2-to-8-degree receiving field of view. With the miniature large-field-of-view laser fuze transmitting-receiving optical system of the invention adopted, laser fuze can perform large-field-of-view, circumferential and leakage-free detection on any target, and a requirement for the miniaturization of the laser fuze is satisfied. The miniature large-field-of-view laser fuze transmitting-receiving optical system has the advantages of accurate target positioning, high detection precision and strong anti-interference capability.

The invention discloses a working electrolyte employed by an aluminium electrolytic capacitor used by an LED lamp. The ingredients of the electrolyte comprise the following parts, by weight: 38.5% to 85.9% of a main solvent, 5% to 25% of an auxiliary solvent, 4% to 20% of a solute, 5% to 15% of a property-modifying additive, 0.2% to 1% of a hydrogen elimination agent and 0.1% to 0.5% of a water-proof mixture; and the main solvent is glycerol. According to the invention, a working electrolyte of an aluminium electrolytic capacitor is improved. At the same time, materials including an anode aluminum foil and a piece of electrolytic paper are optimized; product design is improved; and a volume of an external form of a product is diminished. Moreover, a sealing technology of the product is enhanced and a square waisted wheel is used for assembly, so that volatility of the electrolyte is reduced and product service life is improved. An aluminium electrolytic capacitor, which has high performance and long service life and is used for an LED lamp, is successfully developed.

The invention discloses a cross-type light curtain detection device based on an FPGA. Light receiving tubes are each connected with analog comparators with operational amplifiers, and the analog comparators with the operational amplifiers are each connected with the FPGA. Each light receiving tube receives the light pulses emitted by all the infrared transmitting tubes, and the analog comparatorswith the operational amplifiers are used for simultaneously realizing the amplification of a weak electric signal and the digitization of an analog signal. The FPGA is used for simultaneous receivingand parallel processing of multi-channel signals, thereby achieving the in-place detection of a miniature moving object. The infrared transmitting tubes employ the two-stage control of MOS tubes and distance triodes, and the driving circuits of the infrared transmitting tubes employ the distance triodes to switch the power resistance. The device is characterized in that the device is high in detection precision, is high in data processing speed, is strong in anti-interference ability, is convenient to upgrade, can be used for various industrial harsh environments, is particularly suitable fora silicon steel sheet production line of the metallurgical industry, and can realize the in-place detection of a small high-speed moving object with a thickness of less than 1 mm.

The invention relates to the technical field of radar. The invention discloses laser radar. The laser radar comprises a laser and a receiving system, the laser is used for emitting a laser to a target to be detected, the receiving system is used for receiving a laser reflected by the target to be detected, the receiving system at least comprises a first receiving system and a second receiving system, the first receiving system and the laser are arranged at intervals, the second receiving system is arranged between the first receiving system and the laser, the first receiving system is used for receiving the laser reflected by the target to be detected in a range from a first near point to a first far point, the second receiving system is used for receiving a laser reflected by the target to be detected in a range from a second near point to a second far point, and the distance from the second near point to the laser is less than the distance from the first near point to the laser, is smaller than or equal to the distance from the second far point to the laser and is smaller than the distance from the first far point to the laser. The laser radar has an ultra-small blind area or even has no blind area and can meet the miniaturization requirement.

The invention provides a fractal structure-based dual-band circularly polarized antenna, which comprises an upper dielectric slab, an upper radiation paster, a lower dielectric slab, a lower radiation paster, a support column, an air layer and a bottom feeder line. The upper radiation patch is a Sierpinski third-order fractal structure. The lower-layer radiation paster is provided with a hollow structure. The miniaturization requirement of the actual application of the antenna can be met. Not only the double-frequency working requirements of a current communication system can be met, but also the anti-interference requirements of circularly polarized waves during the wireless wave antenna transmission process of the antenna can be met. The difference between two working frequency bands is larger, so that the two working frequency bands are less likely to be interfered by each other. The antenna is designed to be of a fractal structure, so that the bandwidth of the antenna is improved, wherein the circularly polarized bandwidth is at least larger than 200 MHz. A graded structure is adopted by the antenna for the generation of circularly polarized waves, so that the structure is simpler. The feed is simple and compact. By adopting the micro-strip line feed manner, the antenna is suitable for antenna installation and assembly. Compared with the conventional coaxial feed-point feeding manner and the multi-feed-point feeding manner, the feeding manner of the above antenna is greatly simplified.

The invention relates to the field of computer vision, in particular to an embedded real-time human shape detection method and device, and the method comprises the steps: obtaining a human shape detection model based on a convolutional neural network through training in advance; carrying out image acquisition in a to-be-detected space range by utilizing a human shape detection device, and calculating an ROI region; selecting a detection stage according to the ROI area, dynamically adjusting the image resolution, and inputting the adjusted image into a human shape detection model; carrying outconvolution operation on the input image by utilizing a human shape detection model and combining a multi-core parallel algorithm and a fast convolution algorithm, and extracting feature data; and obtaining a plurality of human-shaped candidate frames according to the feature data, screening and fusing the human-shaped candidate frames, and finally determining a human-shaped target. Model trainingis carried out based on the convolutional neural network, the detection precision is high, meanwhile, the multi-core parallel and fast convolution algorithm is combined, the model resolution and focal length are dynamically adjusted, the hardware requirement is low, and the miniaturization requirement of a human body detection module can be met.

The embodiment of the invention discloses a folding angle detection method of a folding screen and electronic equipment, and aims to solve the problem of low folding angle detection precision of the folding screen in related technologies. The method is applied to the electronic equipment with the folding screen, the folding screen comprises two screen parts, flexible pressure sensors are arrangedat the folding positions of the two screen parts, the flexible pressure sensors are connected with the two screen parts respectively, and the method comprises the steps that pressure signals of the flexible pressure sensors are detected; and the folding angle of the folding screen is determined according to the pressure signals.

The invention relates to a driving mechanism and a lens anti-shake device, the driving mechanism is provided with a driving rod and an SMA wire, the driving rod is provided with a power input end, a power output end and a transfer part, and the distance from the power input end to the transfer part is smaller than the distance from the power output end to the transfer part; the transfer part provides a fulcrum for synchronous rotation of the power input end and the power output end; one end of the SMA wire is connected with the power input end of the driving rod, the other end of the SMA wireis fixedly arranged, and the SMA wire provides actuating force to drive the power input end of the driving rod to rotate, so that the power output end synchronously follows rotation and enlarges the rotation arc length. In the lens anti-shake device, the power output end acts on the lens carrier, so that the lens carrier rotates around the optical axis of the lens, the optical anti-shake functionis realized, and the use performance of the lens is improved. The driving mechanism is small in size, the driving structure is simplified, the requirement for product miniaturization is met, large-stroke anti-shaking is achieved through the lever principle, control is easy, convenient and accurate, and the driving mechanism is suitable for application and popularization.

A slant hinge includes a cylindrical body, a flange element, a hinge rod, and a friction cam gear. The cylindrical body is arranged in either of a first housing and a second housing which can be opened and closed with each other. The cylindrical body is provided with a bottom which is small in diameter and is short in length. The flange element is arranged on an open end of the cylindrical body, and is arranged in the other housing. The hinge rod is arranged along the central axis direction of the cylindrical body and is fixed on either of the cylindrical body or the flange element, so the hinge rod can be pivotedly supported to rotate to another direction. The friction cam gear has the friction function and the adsorption function and is provided with a first cam, a cam element, and an elastic element. An electronic device which possesses the slant hinge is also disclosed.

The invention provides a circuit breaker, which comprises a moving contact, a static contact, a rotation shaft and an operation mechanism, wherein the moving contact can rotate around the rotation center of the rotation shaft relative to the static contact, and through contact or breaking between the moving contact and the static contact, connection or disconnection of the circuit is realized; the operation mechanism comprises an upper connection rod, a lower connection rod and a handle, the upper connection rod is set to rotate around one end of the upper connection rod under the driving effects of the handle, the other end of the upper connection rod is connected onto one end of the lower connection rod in a rotary mode through a connection rod hinging shaft, the other end of the lower connection rod is hinged with the rotation shaft, the rotation shaft can be driven to drive the moving contact to rotate, the working length of the upper connection rod and the working length of the lower connection rod, and the working length of the upper connection rod and the distance between the hinging point between the lower connection rod and the rotation shaft and the rotation center of the rotation shaft have predetermined proportion relationships, the rotation angle of the moving contact formed after the moving contact and the static contact are disconnected is larger than 30 DEG, and the purpose of improving the breaking ability of the circuit breaker is realized.

The invention discloses a refraction-reflection optical fingerprint sensor structure comprising an acquisition prism, a light source, a lens, and an imaging device which are all installed in a housing. The acquisition prism at least comprises an incident surface, an acquisition surface, a total reflection surface, an exit surface 1 and an exit surface 2. The incident surface and the total reflection surface are arranged in the same plane. The exit surface 1 and an exit surface 2 are arranged in parallel. An intersection angle 1 is arranged between the exit surface 1 and the total reflection surface. A reflector is correspondingly disposed on the outer surface of the exit surface 1 of the acquisition surface. An intersection angle 2 is arranged between the exit surface 1 and the reflector. The imaging device is correspondingly disposed on the outer surface of the exit surface 2 of the acquisition surface. A diaphragm is installed between the imaging device and the exit surface 2. An intersection angle 3 is arranged between the exit surface 2 and the imaging device. Optical path reflection and refraction are achieved on the acquisition prism such that the length and focal depth of an optical axis are effectively increased. Therefore, high manufacture precision is achieved and product requirements for easy manufacturability and miniaturization are achieved.

The invention discloses a deflection warhead. The deflection warhead comprises a swinging cone, a spherical surface pair shell, a warhead shell and a driving mechanism, wherein the warhead shell is a circular platform and is provided with a cavity penetrating through the bottom surface and the top surface of the warhead shell; the swinging cone comprises a cone, a rotary sphere body and a square shaft; a plane is turned on the outer surface of the rotary sphere body; the rotary sphere body is fixed at the center of the bottom surface of the cone through the plane; a spherical surface opposite to the plane is matched with the spherical surface pair shell to form a spherical surface pair; the other end of the spherical surface pair shell is connected with one end, with the small bottom area, of the warhead shell; one end of the square shaft is fixed on the rotary sphere body and the other end of the square shaft is located in the warhead shell; the driving mechanism is located in the warhead shell. According to the deflection warhead, the aim that the swinging cone swings in a relatively large range can be realized and the deflection warhead has the advantages of high control precision and rapid response.

The invention discloses a coupling transformer, which consists of an insulating sheath, coils and a magnetic ring, wherein the magnetic ring is made of manganese zinc ferrite; the coils are formed by winding two groups of enameled wire coils, namely a primary coil and a secondary coil in parallel, and are uniformly distributed on the periphery of the magnetic ring; and the insulating sheath is sleeved outside the magnetic ring and the coils. The coupling transformer has a simple and reliable structure and a small volume, both input signals and output signals are 1MHz pulse signals, the rise and fall times of the signals are 300ns, and the coupling transformer improves the coupling capability between the coils, reduces the loss and is used for coupling 1553B buses.