7485 results about "Miniaturization" patented technology

The invention discloses an electromagnetic ultrasonic thickness detection method and system based on a miniaturized low-power-consumption internet of things, and the method comprises the steps: carrying out the parameter optimization processing through a pulse coding excitation algorithm according to the electromagnetic characteristic parameters of a target material and a preset detection precision requirement, and outputting a low-power-consumption excitation parameter set; driving an electromagnetic ultrasonic transducer to generate a detection signal based on the low-power-consumption excitation parameter set, and outputting a compressed echo signal; performing multi-scale intrinsic mode decomposition on the compressed echo signal, and outputting a thickness correlation characteristic parameter set; inputting the thickness correlation characteristic parameter set into a depth residual error-attention network model, and outputting a thickness prediction result; and performing multi-node data fusion on the thickness prediction result based on an Internet of Things cloud platform to generate a final thickness detection report. According to the embodiment of the invention, high-precision and traceable thickness detection can be realized based on the miniaturized low-power-consumption Internet of Things.

The invention relates to the technical field of gas detection, in particular to a multi-gas accurate detection method and system.The method comprises the following steps that gas to be detected flows through a miniature gas enrichment device prepared through an MEMS technology under driving of a miniature gas pump, and target gas is adsorbed and enriched through graphene and metal oxide composite sensitive materials on the surface of a spiral gas inlet flow channel in the miniature gas enrichment device; the desorption concentrated gas is heated to the multi-gas composite detector, and the sensor array reacts with the gas to generate an electric signal; the data acquisition unit performs noise reduction, amplification and analog-to-digital conversion preprocessing on the electric signal; the data processing unit extracts characteristic vectors such as a response curve peak value and a rising slope; inputting the feature vector into a pre-trained machine learning classification-regression combined model, and outputting a gas type identifier and an initial concentration; error compensation is carried out in combination with environment temperature and humidity and a cross sensitivity interference mode library, and finally accurate information of at least nine gases is output. The device has the advantages of high sensitivity, strong anti-interference performance and miniaturization.

The invention relates to a shear-based acceleration and pressure composite sensor and an assembly method thereof, and belongs to the field of composite sensors. According to the technical scheme of the acceleration and pressure composite sensor based on the shear type structure, an acceleration detection module comprises a mass block of a regular polygon prism structure, and each side face of the mass block is provided with an acceleration sensitive ceramic piece; the pressure detection module comprises a force transmission column of a regular polygon prism structure, and each side face of the force transmission column is provided with a pressure sensitive ceramic piece, an electrode piece and an insulation block. According to the scheme, the sensitive elements of the acceleration sensor and the pressure sensor core are arranged in a polygonal mode to form a spatial three-dimensional structure, the effective area of the sensitive elements in unit volume is increased, the multiple sensitive elements act together to form superposition of pressure signals, the detection precision and sensitivity of the two are guaranteed, and the detection precision is improved. Therefore, the overall size of the composite sensor is greatly reduced on the premise that the original precision is maintained, and the composite sensor is miniaturized.

The invention relates to the technical field of radio frequency integrated circuits and advanced semiconductor packaging, in particular to a multilayer spiral inductor structure based on an RDL process and a preparation method. The preparation method comprises the steps of seed layer deposition, gradient line width coil formation through photoetching and electroplating, alternate dielectric layer deposition, through hole etching to form vertical interconnection copper columns, air bridge forming through a photoresist sacrificial layer process and silicon nitride passivation packaging. Through fan-shaped topological layout, dielectric material collaborative optimization and three-dimensional interconnection structure design, the self-resonant frequency bandwidth is effectively improved, conductor and dielectric loss is reduced, and miniaturization integration and high reliability of high-frequency inductance elements are achieved.

The invention discloses a three-dimensional integrated packaging structure and a packaging process thereof. The three-dimensional integrated packaging structure comprises a flip or normal chip with a functional surface and an opposite back surface; the rewiring layer and the chip are vertically stacked and electrically connected with each other; electrically leading the rewiring layer out of the packaging structure; the stacking direction of the inductor and the chip is parallel to the thickness direction of the chip, the inductor and the chip, the rewiring layer and the lead-out structure are physically isolated through an insulating medium layer, the inductor is of a spiral, multi-ring layer overlapping or sectional winding structure, the inductor comprises a magnetic core, a spiral coil surrounding the surface of the magnetic core is formed through etching and electroplating processes, and the lead-out structure is arranged on the surface of the spiral coil. The spiral coil comprises a circuit A, a circuit B and a circuit C, and the magnetic core and the spiral coil are encapsulated by the insulating medium layer. The inductor and the chip are stacked in an inverted or normal mode, the three-dimensional structure saves space, reduces parasitic inductance, resistance and the like, signal transmission is stable, electromagnetic interference is small, and the three-dimensional structure is suitable for the chip packaging field of miniaturization, high integration and the like.

The invention discloses a metasurface filtering antenna with high out-of-band rejection. The metasurface filtering antenna comprises a first dielectric substrate, a bonding layer and a second dielectric substrate which are sequentially arranged from top to bottom, wherein the central position of the upper surface of the first dielectric substrate is provided with a metasurface structure, the metasurface structure comprises four same rectangular metal patches, and the four rectangular metal patches are arranged in a 2 * 2 array; the upper surface of the second dielectric substrate is of a defected ground structure, and a rectangular gap and four U-shaped grooves are etched in the center of the defected ground structure, wherein the four U-shaped grooves are symmetrically formed in the two sides of the rectangular gap at equal intervals; the lower surface of the second dielectric substrate is a feed structure, and the feed structure comprises a microstrip line and an I-shaped branch strip connected with the microstrip line; the first dielectric substrate and the second dielectric substrate are connected through a bonding layer. The metasurface filtering antenna can achieve good filtering and radiation performance in a millimeter wave frequency band, and meanwhile is simple in structure and low in machining difficulty, thereby being beneficial to achieving miniaturization design of a millimeter wave system.

The invention discloses an all-optical logic operation system and operation method based on a metasurface device, and mainly solves the technical problems that an existing optical logic gate is high in system complexity, not visual enough in judgment result, high in recognition difficulty, poor in practicability and the like. The logic operation system comprises a polaroid, an object plane, a metasurface device and a detector which are arranged in sequence. The polarizer is used for adjusting the polarization direction of incident light; a plurality of transparent target areas with different shapes are arranged on the object plane and are used for placing corresponding target images; the centers of all the target areas are uniformly distributed on a circle with the center of the object plane as the circle center and d as the radius; incident light reaches the metasurface device after passing through the polaroid and a target image on the object plane, optical logic operation is carried out through the metasurface device, and then the incident light is output to the detector for imaging. The invention has the advantages of simple structure, quick function switching, miniaturization, high integration and the like.

The invention discloses a Ka-band four-tilt-beam magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave radio frequency front-end devices. Based on a magnetoelectric dipole composite radiation structure, four centrosymmetric radiation units are integrated on a low-loss substrate. The antenna comprises a probe patch of a coaxial gamma-shaped feed probe, a radiation patch, a parasitic patch, an upper dielectric substrate, a lower dielectric substrate, a middle curing layer, a shorter metal through hole of the coaxial gamma-shaped feed probe, a longer metal through hole of the coaxial gamma-shaped feed probe, a metal through hole c of the radiation patch, a metal through hole d of the parasitic patch and a metal ground backboard, a probe patch, a radiation patch and a parasitic patch of the coaxial gamma-shaped feed probe are located on the upper surface of the upper-layer dielectric substrate, and a metal ground backboard is located on the lower surface of the lower-layer dielectric substrate; the antenna has ultra-wide impedance bandwidth, has the characteristics of low cost, miniaturization, low cross polarization and back lobe suppression, and is superior to a traditional inclined beam antenna and an antenna array scheme.

The invention relates to the field of circuit control, in particular to a relay low-power-consumption control circuit and method, and the method comprises the steps: enabling a signal module to generate and output an enabling signal, triggering a time-delay control circuit through the enabling signal, enabling a driving voltage module to drive a relay to be closed through a first driving voltage, and enabling a second driving voltage to be closed through a second driving voltage; and after the time delay, the second driving voltage is automatically switched to maintain the pull-in state of the relay. The invention also comprises a corresponding control method which comprises the following steps: receiving an enable signal, generating a delay control signal when the enable signal is valid, and switching and outputting the first driving voltage or the second driving voltage according to the delay control signal. Through a mode of switching the driving voltage in a time-sharing manner, on the premise of ensuring reliable pull-in and holding of the relay, the power consumption of the control circuit is remarkably reduced, heat is reduced, the system reliability is improved, support is provided for miniaturization design of the relay, the structure is simple, and the power consumption optimization effect is remarkable.

According to the glass phased-array antenna control module and the manufacturing method thereof, a control circuit is manufactured on a glass substrate through a TFT manufacturing process, high-precision control over a phased-array antenna is achieved, the accuracy of beam pointing of the phased-array antenna and the quality of signal processing are guaranteed, and the manufacturing cost of the phased-array antenna is reduced. Through the combination of a TFT manufacturing process and a TGV technology, the layout space of a control circuit is saved, the installation space of an antenna chip is saved through a COB packaging mode, the high integration level of the phased-array antenna is achieved, the requirements for miniaturization and multi-functionalization of the phased-array antenna are met, and the application range of the phased-array antenna is widened. According to the phased-array antenna, the grounding isolation holes are formed in the periphery of the antenna chip, so that good crosstalk resistance is achieved, the stability and reliability of the phased-array antenna are improved, the performance of the phased-array antenna is comprehensively improved, the phased-array antenna has higher competitiveness in the fields of satellite communication, vehicle-mounted radars, military radars and the like, and the application prospect is wide. And the requirements of various fields on high-performance phased-array antennas can be better met.

The invention discloses a piezoelectric air cooling device based on a piezoelectric film PZT technology, and relates to the technical field of MEMS. The device adopts a two-layer packaging structure of a piezoelectric cantilever beam MEMS chip and a PCB (Printed Circuit Board) with a vent hole. A cantilever beam of the MEMS chip is integrated with an SOI top silicon layer and an ultrathin PZT driving stack, low rigidity and high driving force are achieved, and the surface of the cantilever beam is covered with a PDMS flexible sealing layer to achieve dynamic sealing. When the device works, the cantilever beam is driven to resonate in an ultrasonic frequency band, and efficient synthetic jet is generated at the vent hole by periodically changing the volume of the pump cavity. The technical bottleneck that miniaturization and high performance are difficult to consider at the same time is broken through, and the device has the advantages of being compact in structure, mute and efficient and is suitable for precise heat dissipation of miniature electronic equipment.

The invention discloses a lightweight low-delay quantum key distribution method and system adaptive to an electric power scene, and belongs to the technical field of quantum communication and electric power communication crossing. The method comprises the steps cooperatively executed by a sending end and a receiving end: the sending end determines a basis vector based on a pre-associated quantum fingerprint sequence and a timestamp, sends a key through polarization-phase two-dimensional coding, generates a selection mark and executes privacy amplification; and a receiving end synchronizes a timestamp to determine a basis vector, compares the basis vector with the quantum fingerprint to complete authentication, decodes through an integrated module, performs collaborative error correction and executes privacy amplification. The system comprises functional modules of a sending end and a receiving end, is integrated on a miniaturized board card, and supports common-fiber transmission and protocol conversion. According to the method, the problems of high time delay, high deployment cost and poor adaptability of the traditional QKD are solved, the end-to-end time delay is reduced to 14 microseconds, the deployment cost is reduced by more than 60%, the requirements of high safety, low time delay and lightweight deployment of a power system are met, and the method is suitable for key services such as power dispatching and relay protection.

The invention provides a filter, a chuck, a shower head and semiconductor equipment. The inductor of the filter comprises a magnetic core and a winding; the magnetic core comprises a winding area; the winding comprises at least two winding wires, the at least two winding wires are gathered together and jointly wound on the winding area, at least one winding wire is used for transmitting a first current signal, at least one winding wire is used for transmitting a second current signal, and the current directions of the first current signal and the second current signal are opposite. One end of each winding wire is connected with a power supply, and the other end is connected with the chuck and an electrode of a heater of the shower head. According to the technical scheme of the invention, the inductor of the filter has high integration level, high inductance and good differential mode characteristic, so that the miniaturization of the filter is realized, the filtering performance of the filter is improved, the heating performance of a chuck or a shower head is stable, and semiconductor equipment can always have good working reliability.

An external TPMS sensor for heavy-duty trucks comprises a helical antenna and a 1225 cell, and is installed outside a tire of a vehicle; and system power consumption is reduced by increasing the communication rate of the TPMS sensor, and / or decreasing the sampling period, and / or decreasing the number of data frames transmitted every time, and / or decreasing RF output power, and / or disposing an LNA circuit at an input terminal of a corresponding receiver antenna. The requirement of the TPMS sensor for a long service life is met by reducing system power consumption; the helical antenna, the matching network, and the 5 dBm chip for outputting power are used to realize miniaturization of the TPMS sensor; and the 1225 cell is used, which, compared with traditional TPMS sensors, allows the diameter of the TPMS sensor to be reduced by about 8 mm and the weight of the TPMS sensor to be reduced by over ⅓, such that miniaturization of the TPMS sensor is further realized.

The invention provides a knuckle module and a dexterous hand. The knuckle module comprises a first knuckle section, a motor, a control circuit board, a reversing mechanism and a speed reducer, wherein the motor and the control circuit board are arranged in the first knuckle section, and the reversing mechanism and the speed reducer are arranged in the end portion of one end of the first knuckle section. The direction of an output shaft of the motor is parallel to the length direction of the first knuckle section, the direction of an output shaft of the speed reducer is perpendicular to the direction of the output shaft of the motor, and the reversing mechanism is arranged between the motor and the speed reducer and used for converting rotation of the output shaft of the motor into rotation of an input shaft of the speed reducer. The control circuit board is arranged at the end, away from the reversing mechanism, of the motor and electrically connected with the motor. According to the knuckle module provided by the invention, the use requirements of light weight and miniaturization of finger joints can be met, the motion control precision of the finger joints is greatly improved, meanwhile, modularization is realized, a plurality of knuckle modules can be stacked to be connected into a finger, and the knuckle module is convenient to disassemble and assemble and easy to maintain.

A miniaturized interferometric integrated photonic gyroscope structure with top silicon oxide, middle silicon oxide and bottom silicon oxide deposited on a silicon substrate comprises broadband optical source or a semiconductor optical amplifier with silicon nitride ring resonator wavelength filter, connected with a thin film lithium niobate or piezoelectrically actuated silicon nitride phase modulator vertically coupled with a silicon nitride waveguide spiral loop. The silicon nitride waveguide spiral loop is patterned on thin bottom oxide layer with air trenches below it and connected with a germanium detector either through photonic wire bonding or vertically integrated through reflecting mirror embedded into silicon wafer. Various methods of coupling alternative materials are described and the potential of connecting several spiral waveguides for enhanced sensitivity in a gyroscope application.

The invention relates to the technical field of array antennas, and discloses a common-caliber layout-based ultra-wideband array antenna, which comprises a low-frequency unit and a high-frequency unit which are arranged based on a common caliber, and is characterized in that the working frequency of the low-frequency unit covers an fmin-f0 frequency band, and the working frequency of the high-frequency unit covers an f0-fmax frequency band. The low-frequency unit is a broadband dual-polarized antenna, a uniform tight coupling array distributed at equal intervals is formed by adopting a tight coupling principle, and the unit interval is calculated based on a grating lobe suppression condition at the frequency f0. The high-frequency unit is a miniaturized broadband dual-polarized antenna and adopts a sparse array form; the initial unit spacing and the unit number of the sparse array are calculated based on the grating lobe suppression condition at the highest frequency f2 of the f1-f2 frequency band with the side lobe requirement between the f0-fmax frequency bands. The ultra-wideband array antenna gives consideration to full-band array performance, can provide sufficient space for active circuit arrangement, and effectively reduces power consumption and cost.

The invention discloses an electronic device, a heat dissipation method and a computer readable storage medium, and is applied to the field of electronic device heat dissipation, and the electronic device comprises a case and at least one heat dissipation system arranged in the case; the heat dissipation system comprises cold plates, the cold plates comprise the first cold plate and the second cold plate, the first cold plate is perpendicular to the main board, and the second cold plate is parallel to the main board; a liquid storage component, a flow pump and a liquid cooling pipeline; a liquid outlet of the first cold plate is flush with a liquid inlet of the liquid return manifold assembly in the extending direction of the main plate; the liquid storage part and the liquid inlet of the second cold plate are arranged in the first direction and are arranged on the two sides of the main plate respectively. According to the electronic equipment disclosed by the invention, the internal space of the case can be fully utilized, and the heat dissipation requirement can be met while the miniaturization requirement of the edge server is met.

The utility model discloses a novel wavelength selection switch, which relates to the technical field of all-optical communication and comprises an optical fiber collimation array, a Fourier lens, a 4f imaging system, a diffraction grating, an LCOS (Liquid Crystal On Silicon) device and an MEMS (Micro Electro Mechanical System) device which are sequentially arranged along the direction of an optical path. According to the utility model, by utilizing the fine modulation and deflection characteristics of the LCOS device to the light beam and combining the wide-angle scanning characteristic of the MEMS device, the wavelength selective switch capable of greatly increasing the number of output ports is provided, the reconfigurable optical add-drop multiplexing function is realized, the miniaturization and standardization of the WSS module are realized, and the optical communication technology is high in efficiency and wide in universality.

The invention provides a novel low-cost miniaturized TRSiP packaging structure, which relates to the field of wireless communication equipment and comprises an upper ceramic dielectric plate, a lower ceramic dielectric plate, a radio frequency circuit and a metal enclosure frame, a first metal bonding pad is arranged on the upper surface of the upper-layer ceramic dielectric plate, and a second metal bonding pad is arranged on the upper surface of the lower-layer ceramic dielectric plate; the radio frequency circuit comprises a radio frequency generation assembly and a metal column. The radio frequency generation assembly is arranged on the lower ceramic dielectric plate, the radio frequency generation assembly is connected with the second metal bonding pad, the lower end of the metal column is connected with the second metal bonding pad, and the upper end of the metal column is connected with the first metal bonding pad; and the metal enclosure frame is arranged between the upper-layer ceramic dielectric plate and the lower-layer ceramic dielectric plate and surrounds the radio frequency circuit. The structure has the advantages of being low in cost, small in size, high in integration, good in air tightness and high in structural strength, and the reliability is greatly improved.

The invention relates to the crossing field of computer technology and biomedical engineering, and discloses a miniaturized intelligent blood glucose monitoring and analyzing method integrating edge computing. The method comprises the steps that glucose concentration and time sequence multi-source physiological signals are collected through a wearable sensor; performing data segmentation and multi-modal feature alignment based on the circadian rhythm; inputting the features into a lightweight student model obtained through knowledge distillation for blood glucose prediction; and the reasoning frequency is adaptively adjusted in combination with a memory feedback mechanism. The system comprises a sensing unit, a preprocessing unit, a lightweight model execution unit and a risk early warning unit. While the prediction precision is guaranteed, the model is compressed to be within 150 thousand parameters, a 512 KB on-chip memory is adapted, and low-power-consumption and high-stability end-side continuous blood glucose monitoring and early warning are achieved.

The invention discloses a miniaturized and light direct insertion type waterproof connector which comprises a plug and a square plate socket. The plug comprises a housing, a coupling nut, a spring, a steel ball, a stop ring, a snap spring, a crimping jack assembly and a bonding jack insulator assembly. The connecting nut and the shell are limited through the steel ball, the spring can be compressed by pressing the connecting nut, limiting of the steel ball is relieved, and rapid butt joint and locking of the plug and the socket are achieved. An F-shaped stop groove is formed in the shell and matched with the stop ring, and the spring can be prevented from resetting during pre-installation. The housing is provided with a three-key position, and the three-key position is matched with the three-key groove of the socket to prevent misplug. Through an innovative locking and mistake proofing structure and in combination with compact hole position arrangement, miniaturization and light weight of the connector are realized on the premise of ensuring an IP67 waterproof grade and reliable connection, and compared with a traditional J599 series connector, more contact bodies can be accommodated under the same shell size.

The invention discloses a miniature camera and laser common-caliber optical system and a use method, and relates to the field of laser optical instruments. The problem that an existing multi-band common-caliber optical system cannot achieve integration, multi-functionalization and miniaturization at the same time is solved. The miniature camera and laser common-aperture optical system comprises a zoom optical lens group, a beam expanding telescope group, an electromagnetic galvanometer, a spectroscope, a fast reflecting mirror and a laser light source. The laser converging zoom optical lens group and the fine tracking imaging branch are respectively connected with the zoom cam lens cone and the fine tracking lens cone, the beam expanding telescope group is connected with the antenna frame, and the electromagnetic galvanometer, the spectroscope and the reflector are all connected with respective bases. The optical axis collinear coupling design is adopted among the components, it is ensured that a laser path and an image path are completely overlapped, and high-precision image guide striking control is achieved. The small mobile platform is suitable for industrial precision machining and rapid identification, high-precision tracking and laser precise striking of short-range dynamic targets.

The invention discloses a broadband miniaturized microstrip antenna applied to wireless terminal equipment, and the structure of the antenna comprises double layers of dielectric substrates, a coupling metal patch layer disposed on the upper surface of the first layer of first dielectric substrate, and a second layer of second dielectric substrate stacked on the first layer of first dielectric substrate. The radiation metal patch layer is arranged on the upper surface of the second dielectric substrate on the second layer and is etched with a U-shaped groove which is nested inside and outside, the grounding metal plate layer is arranged below the air layer on the first layer and is etched with an L-shaped groove, and a feed source point connected to the coupling metal patch layer is arranged on a grounding metal patch. The microstrip antenna provided by the invention is compact in structure and small in size, is easy to be integrated in a small wireless terminal device, can work in two working frequency bands of 2.45 GHz-2. 76 GHz and 3.22 GHz-4. 56 GHz at the same time, and can cover N41 / N77 / N78 and other core communication frequency bands in 5G Sub-6.

The dielectric filter with the built-in negative coupling structure comprises a dielectric block, a conductive layer and the negative coupling structure, at least two resonance holes are formed in the dielectric block, the conductive layer is laid on the surface of the dielectric block and the inner walls of the resonance holes, and the negative coupling structure is arranged between two adjacent resonators divided by the two resonance holes. The negative coupling structure comprises the two conducting strips which are arranged in parallel at an interval and the metalized via hole for connecting the two conducting strips, and the conducting strips and the metalized via hole are embedded in the dielectric block and are not connected with the resonance hole and the conducting layer, so that coupling can be realized in the dielectric block, exposure is not needed, and the strength is not reduced; according to the manufacturing method of the dielectric filter, the defects of deformation, local collapse and the like generated during firing can be avoided, the size of the dielectric filter can be greatly reduced, the requirement for miniaturization is met, the conducting strips and the metalized via holes are arranged in a prefabrication machining mode, the machining precision is high, the zero point position control is accurate, implementation is easy, and the yield is high.

The invention belongs to the technical field of aviation electromagnetic exploration, and particularly relates to a time domain aviation electromagnetic soft pod hard structure miniaturization compensation device and a design method.The device comprises a compensation-receiving coil and a transmitting coil, and the compensation-receiving coil and the transmitting coil are concentric; the compensation-receiving coil comprises a compensation coil and a receiving coil which are wound on the same annular framework, one terminal of the compensation coil is connected with a first point on the transmitting coil through a series impedance device, and the other terminal of the compensation coil is directly connected with a second point on the transmitting coil through a lead; and a transmitting coil interception section is arranged between the first point and the second point. The weight of exploration equipment can be reduced, and early noise brought by a primary field in the movement process is reduced.

The invention relates to the technical field of injection molding processes, in particular to an injection molding process for an ultrathin capacitor shell, which comprises the following steps: premixing ABS (Acrylonitrile Butadiene Styrene), polycarbonate and a reinforcing aid, and carrying out melt blending granulation on the obtained premix to obtain reinforced particles; the multi-cavity mold is preheated in advance; and the reinforced particles are fed into a screw extruder to be molten, then the molten reinforced particles are injected into a preheated multi-cavity mold, pressure maintaining treatment is carried out, then cooling and demolding are carried out, and the capacitor shell is obtained. The MBS and the modified glass fiber are added into the ABS / polycarbonate composite material to prepare the reinforced particles, so that the mechanical property of a product prepared from the reinforced particles is greatly improved, the product has good rigidity and toughness, and the tensile strength, bending strength and impact strength of the capacitor shell can be improved when the product is applied to the capacitor shell, and the service life of the capacitor shell is prolonged. Therefore, the shell of the capacitor can be made thinner on the premise of ensuring the quality, and the miniaturization of the capacitor is facilitated.

The invention relates to the technical field of audio driving, in particular to a driving circuit and method and electronic equipment. The method comprises the following steps: arranging two boosting units at the output end of the power amplifier, respectively receiving two paths of signals with opposite phases output by the power amplifier so as to realize that boosted signals output by the two boosting units are also signals with opposite phases, arranging one boosting unit to be connected with the positive electrode of the piezoelectric ceramic module, and arranging the other boosting unit to be connected with the negative electrode of the piezoelectric ceramic module; and the other boosting unit is connected with the negative electrode of the piezoelectric ceramic module, so that the driving voltage of the piezoelectric ceramic module is increased. The boost unit is simple in structure, occupies a small area of a circuit board, and can be effectively applied to miniaturized electronic equipment.

The invention relates to the technical field of power grid measurement, in particular to a miniaturized wireless self-powered alternating current electric field measurement method and system. Comprising the following steps: acquiring radio frequency energy in an electric field environment, and converting the radio frequency energy into direct current electric energy through a radio frequency energy acquisition system consisting of a microstrip antenna, a voltage doubling rectifying circuit and an energy management circuit; an alternating current electric field signal is collected through a differential dual-electrode sensor structure, and an electric field voltage signal is generated; amplifying the voltage signal through an instrument amplifier, and obtaining a digital signal of the electric field signal through an analog-to-digital conversion circuit; and processing and analyzing the alternating current electric field information according to the digital signal. By combining a radio frequency energy acquisition technology with a differential dual-electrode sensing structure, the electric field sensor has the performance characteristics of self energy supply, miniaturization, high precision, wide frequency response and low power consumption. The system can measure various types of electric field signals, including sine wave, triangular wave and square wave electric field signals, has a wide frequency range and a wide measuring range, and is excellent in linearity.

A locking mechanism, a door lock device, and a vehicle are disclosed. The locking mechanism includes a cam, a locking arm, and a first gear. The cam is rotatably connected to a first rotating shaft. The locking arm is rotatably connected to a second rotating shaft and is used to connect with the cam. The first gear is rotatably connected to the first rotating shaft and is used to connect with the cam. The locking mechanism includes a locked state and an unlocked state. In the locked state, the locking arm is connected to the first gear, so that the first gear is fixed relative to the first rotating shaft. During the process of switching from the locked state to the unlocked state, the cam rotates around the first rotating shaft and drives the locking arm to rotate around the second rotating shaft. The locking arm and the first gear separate, and the cam drives the first gear to rotate relative to the first rotating shaft. The above-mentioned locking mechanism has a simple structure, does not require a motor drive, and can achieve the design requirements of miniaturization and low cost.