18results about How to "Improve rectification efficiency" patented technology

The invention relates to the field of electromagnetic compatibility, and discloses a simplified circuit design method and system for a high-efficiency EMC suppression rectifier diode, and the method comprises the steps: recognizing an interference frequency range of a diode application scene, determining a passive element and an active element of the diode application scene, and building a passive filter of the diode application scene; establishing an active filter of a diode application scene, and combining the passive filter and the active filter to obtain a multi-stage filter; establishing a protection circuit of the multi-stage filter and the target rectifier diode, and constructing a diode integrated circuit of the protection circuit, the multi-stage filter and the target rectifier diode; and simulating the diode integrated circuit to obtain EMC suppression data, calculating a circuit parameter value of the diode integrated circuit, and executing circuit optimization of the diode integrated circuit to obtain a target integrated circuit. According to the invention, the EMC suppression effect of the rectifier diode can be improved.

This invention discloses a collaborative control system and method for construction equipment based on digital twins, belonging to the field of collaborative control technology for construction equipment. The invention includes: S10: obtaining a real-time construction simulation model of the construction site; S20: determining the risk control points to be constructed in the construction plan; S30: finding the associated marked intelligent construction equipment for the risk control points; S40: determining the collaborative construction control benchmark between the risk control points and each associated marked intelligent construction equipment; S50: performing collaborative control of the associated marked intelligent construction equipment for the risk control points. This invention, by determining the collaborative construction control benchmark between the target intelligent construction equipment and each associated marked intelligent construction equipment, determines the control timing and sequence of the central control platform for each associated marked intelligent construction equipment, thereby achieving collaborative control of intelligent construction equipment during the construction rectification process.

The invention relates to the technical field of power supplies, and discloses a self-driven active bridge rectifier circuit and electronic equipment, and the circuit comprises a passive rectifier unit composed of a diode D2 and a diode D4, a switch tube Q1, a switch tube Q2, a first comparison circuit and a second comparison circuit. The positive electrode of the diode D2 is connected with the L end of the input power supply, the positive electrode of the diode D4 is connected with the N end of the input power supply, and the negative electrode is connected with a load. The drain electrode of the switch tube Q1 is connected with the L end of the input power supply, the source electrode is grounded, and the grid electrode is connected with the output end of the first comparison circuit. A first input end of the first comparison circuit is connected with an N end of an input power supply, and a second input end is connected with reference voltage. The drain electrode of the switch tube Q2 is connected with the N end of the input power supply, the source electrode is grounded, and the grid electrode is connected with the output end of the second comparison circuit. The first input end of the second comparison circuit is connected with the L end of the input power supply, and the second input end of the second comparison circuit is connected with reference voltage. The rectifying circuit can further improve the power density of the power supply.

The embodiment of the invention provides an AI-based SDK permission calling method and device, and relates to the technical field of computers. The method comprises the following steps: constructing a target reflection system corresponding to a target system; under the condition that the version of the target system is determined to be larger than a preset version, target HOOK operation is executed on a target API based on the target reflection system to generate target log information, the target API comprises an API corresponding to the sensitive operation and / or an API corresponding to the permission request operation, and the target log information comprises target interaction node feature data; and determining an SDK permission calling result according to the target log information. In this way, the SDK permission calling monitoring process can be simplified, the technical threshold and operation difficulty of SDK permission calling monitoring are reduced, the rectification difficulty of the third-party SDK is reduced, and the rectification efficiency of the third-party SDK is improved.

The invention relates to the technical field of remote control, in particular to an intelligent high-voltage large-current rectification system, whether the rectification process is qualified or not is analyzed according to the current value after rectification and filtering, secondary judgment is carried out based on the fluctuation condition of the current value after rectification in historical data, and the reason for the unqualified rectification process is analyzed. According to the method, the filtering process is analyzed to be unqualified when the variance of the current value of the historical data is large, the ripple coefficient is reduced by increasing the frequency of the signal source, so that the filtering effect is improved, but the frequency characteristic of the circuit can be influenced by the change of the frequency of the signal source, so that the filtering effect is improved. When the power supply frequency is close to the signal source frequency, the frequency mixing phenomenon is easily generated, and the signal quality and accuracy are influenced, the signal source frequency is adjusted according to the difference value between the signal source frequency and the power supply frequency, so that the frequency mixing phenomenon is avoided, and the signal filtering effect is improved while the signal quality is ensured.

The invention discloses a multi-output resonant flyback converter, which comprises a half-bridge circuit, a resonant capacitor, a resonant cavity and a multi-output circuit, and is characterized in that one end of the resonant inductor is connected to a central point of a half-bridge power switch tube of the half-bridge circuit, and the other end of the resonant inductor is connected in series with a synonym end of a primary excitation inductor of a transformer; one end of the resonant capacitor is connected in series with a dotted terminal of an excitation inductor of the transformer, the other end of the resonant capacitor is connected with a primary side reference potential of the transformer, and a synonym terminal of each secondary side winding of the multi-output winding is connected with an output synchronous rectification module matched with each output winding; the multi-output circuit comprises two output circuits; according to the invention, multipath isolated output can be realized, the resonant cavity is in a resonant state, the primary side switch tube can realize ZVS, and the transmission efficiency is improved.

The utility model relates to a quick charge adapter circuit, including transformation circuit and synchronous rectification circuit, transformation circuit includes transformer T1, transformer T1 includes first secondary side coil and second secondary side coil, the first end of second secondary side coil is used as the positive pole of direct current power supply VOUT2, synchronous rectification circuit includes NMOS transistor Q1 and rectification controller U4, the second end of second secondary side coil is used as the positive pole of direct current power supply VOUT2. The drain electrode of the NMOS tube Q1 is connected with the second end of the second secondary side coil, and the grid electrode of the NMOS tube Q1 is connected with the control end of the rectification controller U4; the power output end of the rectification controller U4 is connected with the first end of the first secondary side coil, the speed setting end of the rectification controller U4 is grounded through a resistor R75, and the monitoring end of the rectification controller U4 is connected with the drain electrode of the NMOS tube Q1 through a resistor R74. Compared with traditional diode rectification, the synchronous rectification circuit reduces conduction loss and improves rectification efficiency.

The invention discloses a GaN-based double-channel MIS grid mixed anode diode with an AlN etching stop layer and a preparation method of the GaN-based double-channel MIS grid mixed anode diode. The problem that in the prior art, the accurate GaN etching difficulty is too large is mainly solved. According to the scheme, the method comprises the following steps: 1) growing a heterojunction layer and a SiN passivation layer on a substrate layer; 2) arranging a groove for forming cathode contact on the epitaxial layer structure, and preparing a cathode; (3) grooves used for anode ohmic contact and Schottky contact are formed in the epitaxial layer structure through three-step etching; the invention discloses an MIS HEMT (Metal Insulator Semiconductor High Electron Mobility Transistor) structure and a manufacturing method thereof.According to the MIS HEMT structure and the manufacturing method thereof, the on resistance and the turn-on voltage can be obviously reduced, the rectification efficiency is improved, and the large current driving capability is achieved.

The utility model discloses a rectifying circuit and electronic equipment, and belongs to the technical field of wireless energy transmission. The rectifying circuit comprises a broadband matching network, a coupling network, a rectifying network and a direct current filtering network; the broadband matching network is connected with a signal source and is used for performing impedance matching with the signal source and receiving a radio frequency signal provided by the signal source; the coupling network is connected with the broadband matching network and the rectification network and is used for increasing the voltage of the radio frequency signal output by the broadband matching network and outputting the radio frequency signal with the increased voltage to the rectification network; the rectification network comprises a Schottky diode, is connected with the direct current filter network and is used for converting the received radio frequency signal into a direct current signal through the Schottky diode and outputting the direct current signal to the direct current filter network; and the direct current filter network is used for filtering the signal output by the rectification network to obtain and output the direct current signal.

The invention relates to the technical field of project acceptance, and discloses a dangerous and large project quality acceptance and management and control method based on an intelligent construction platform, and the method comprises the following steps: S1, constructing a construction scheme and a design file based on a dangerous and large project; s2, obtaining construction quality data corresponding to the dangerous large project digital model; s3, calculating the quality deviation of the construction quality data relative to the quality acceptance control index; s4, analyzing the construction quality state, and generating a quality risk identifier corresponding to the construction part; s5, judging whether a quality early warning triggering condition is met or not; s6, identifying the corresponding construction stage and risk level according to the quality risk; and S7, generating a rectification task corresponding to the quality problem. And association is carried out in a unified space framework through the constructed dangerous large project digital model, so that refined expression and structured display of a quality control object are achieved, and scientific data support is provided for subsequent quality monitoring, risk assessment and quality deviation analysis.

A synchronous rectifier and a wireless charging system, the synchronous rectifier comprises: two groups of low-position MOS tubes, respectively connected to the two ends of an AC output, each group of low-position MOS tubes having a plurality of low-position MOS tubes in parallel; two high-position MOS tubes, one end of which is respectively connected to the two ends of the AC output, and the other end is connected to the DC output end of the synchronous rectifier. By setting two groups of low-position MOS tubes, and controlling the on-off state of a plurality of parallel low-position MOS tubes in each group of low-position MOS tubes through a gate voltage control circuit, the plurality of parallel low-position MOS tubes have the following working states: simultaneously closed, the first number of low-position MOS tubes are opened, the second number of low-position MOS tubes are closed, and simultaneously opened, the corresponding synchronous rectifier can work under low current (0-1mA), small current (1mA-5mA) and medium-large current (greater than 5mA), the efficiency can reach up to 95%-99%, and it is suitable for a wide range of output currents, and can perform high-efficiency rectification for AC power in various current value ranges, and has a wide range of application prospects.

The invention discloses a low-leakage rectification circuit, a rectifier and wearable implantable equipment. The low-leakage rectifying circuit comprises a voltage input end used for being connected with an output end of an external power supply; the input end of the differential rectification circuit is connected with the voltage input end, and the differential rectification circuit is used for carrying out differential rectification on alternating current output by an external power supply and then outputting direct current; the input end of the leakage current suppression circuit is connected with the output end of the differential rectification circuit; the voltage output end is connected with the output end of the leakage current suppression circuit, the voltage output end is used for being connected with an electric device, and the leakage current suppression circuit is used for outputting the direct current output by the differential rectification circuit to the electric device through the voltage output end; the leakage current suppression circuit is also used for suppressing leakage current between the voltage output end and the differential rectification circuit. The invention aims to reduce the leakage current generated when the rectifying circuit works.

The invention discloses an enterprise supplier information security management method and system, and relates to the technical field of information security management, the system realizes automatic integration with a supplier system through a supplier information acquisition module, acquires key data and logs in real time, stores the key data and logs in a database, ensures the timeliness and accuracy of the data, and improves the safety of the supplier system. And a basis is provided for subsequent safety analysis. The preliminary safety analysis module and the compliance and data protection analysis module generate a safety score through a related safety algorithm by using the collected data, calculate a supplier comprehensive safety score Stot through the comprehensive analysis module, compare and evaluate the supplier comprehensive safety score Stot with a safety threshold S, identify a safety short board and generate an improvement suggestion. And through a problem tracking and rectification suggestion module, the system monitors the improvement condition of the supplier in real time, outputs an improvement effectiveness score Eimp and a safety capability improvement score, and automatically executes score deduction or further rectification prompt.

The utility model, which relates to the power supply field, discloses a high-power-factor cabinet lamp power supply comprising a rectification filtering module used for converting a commercial power voltage into a direct current; compared with the prior art, the beneficial effects of the utility model are that the rectification efficiency and the power factor of the power supply are improved and the electric energy loss is reduced by adopting the filter capacitor and the filter inductor which are made of the full-bridge rectifier and the low-loss material, and the power factor of the power supply is improved by optimizing the design of the power supply, so that the electric energy waste is reduced; the power supply efficiency is improved, and due to the improvement of the power supply efficiency, the energy consumption can be reduced, and the influence on the environment is reduced; by optimizing the power supply design, the temperature in the power supply is reduced, so that the service life of the lamp is prolonged; due to the improvement of the power supply efficiency, a more stable and uniform lighting effect can be provided, and the lighting quality is improved; the modular design is adopted, installation and maintenance are convenient, and the use cost is reduced.

The application relates to a self-adjusting bandwidth microstrip Yagi rectifier antenna and application, and belongs to the field of Internet of Things sensors. The application can be applied to Internet of Things sensors, and comprises a microstrip Yagi antenna and a rectifier. The microstrip Yagi antenna comprises a first substrate, an active oscillator, a reflector and a directive antenna. The rectifier comprises a microstrip line and an impedance changer. The application realizes self-power supply and saves electric energy. Meanwhile, the combination of a resistance voltage dividing circuit and a MOS tube is used. The combination of the DC voltage voltage dividing by the resistance voltage dividing circuit and the MOS tube controls the opening and closing of the directive antenna, various opening and closing combinations are formed, the bandwidth size is adjusted, and the problems that a traditional sensor needs active power supply and the communication bandwidth is narrow and unadjustable are solved.

The utility model discloses a charging structure based on a piezoelectric vibrator. The charging structure comprises a switch device, a piezoelectric energy acquisition device and a piezoelectric driver. In a first working state, the piezoelectric vibrator is connected with a first contact of the switching device, the piezoelectric energy collecting device is connected with a second contact of the switching device, and the piezoelectric vibrator is conducted with the piezoelectric energy collecting device and used for charging the piezoelectric energy collecting device; and in a second working state, the piezoelectric vibrator is connected with the first contact of the switching device, the piezoelectric driver is connected with the third contact of the switching device, the piezoelectric vibrator is conducted with the piezoelectric driver, and the piezoelectric driver drives the piezoelectric vibrator to vibrate. When the power of the wearable intelligent device is insufficient, electric energy can be provided for the wearable intelligent device.

The invention provides an ocean project rectification engineering supervision system, which comprises a data collection module, a data analysis module, an early warning module, a supervision module and an optimization module, and is used for executing an ocean project rectification engineering supervision method, and the method comprises the following steps: S1, collecting ocean project rectification engineering data through the data collection module, dividing the collected ocean project rectification engineering data into dimension rectification data; s2, carrying out dimension analysis on the dimension rectification data through a data analysis module, and obtaining a dimension analysis result; s3, carrying out dimension early warning by an early warning module according to a dimension analysis result; s4, the supervision module starts a supervision strategy for dimension early warning; and S5, the optimization module optimizes the ocean project rectification project according to the started supervision strategy. The system can improve the construction period, space and environment supervision efficiency and accuracy of a rectification project through the supervision means of data collection, analysis, early warning, supervision and optimization modules.

The present invention belongs to the field of biomedical telemetry, and relates to a small implantable rectifier antenna, comprising: a dielectric substrate, an antenna radiating unit, a floor, a rectifier circuit, a short-circuit probe, and a feeding coaxial probe, wherein: the dielectric substrate comprises a first layer of dielectric substrate, a second layer of dielectric substrate, and a third layer of dielectric substrate, the antenna radiating unit is located on the lower surface of the first layer of dielectric substrate, the floor is located on the lower surface of the second layer of dielectric substrate, the rectifier circuit is located on the lower surface of the third layer of dielectric substrate, the antenna radiating unit is electrically connected to the rectifier circuit through the feeding coaxial probe, the rectifier circuit is connected to the floor through the short-circuit probe, and the antenna radiating unit and the rectifier circuit share the floor. The antenna radiating unit forms a bending curve structure by loading multiple bending gaps, which effectively expands the bandwidth of the rectifier antenna. The present invention has the advantages of small size and high rectification efficiency under low power input, can be implanted in the human body, and can also be applied to the field of wireless energy transmission in biomedicine.