62results about How to "Clear principle" patented technology

The invention discloses a simulation six-degree-of-freedom real sea condition random wave detection system and a simulation six-degree-of-freedom real sea condition random wave detection method. The simulation six-degree-of-freedom real sea condition random wave detection system comprises the following parts: a wave direction reproduction mechanism for simulating a real sea condition sea surface motion attitude, placing a wave buoy or a wave sensor and providing the motion attitude; the horizontal rotation driving mechanism is used for driving the wave direction reproduction mechanism to horizontally rotate; the laser ranging mechanism is used for calculating the wave height of the wave direction reproduction mechanism; the photoelectric period measuring mechanism is used for calculating the wave period of the wave direction reproduction mechanism; the wave direction angle measuring mechanism is used for measuring the wave direction of the wave direction reproduction mechanism; the bottom plate mechanism provides a detection platform for the whole system; the overall angle measuring mechanism is used for indicating the azimuth angle of the bottom plate mechanism; the land wheel mechanism horizontally moves the whole system and adjusts the bottom plate mechanism to be in a horizontal posture; and the control unit is used for controlling six-degree-of-freedom actions of the wave direction reproduction mechanism, respectively acquiring data of each mechanism and acquiring wave direction, wave height and wave period numerical values. According to the invention, all-parameter detection and calibration can be realized, and high-quality reproduction and magnitude transmission of wave direction parameters are realized.

The invention provides a bad root cause analysis method and system based on a comprehensive analysis framework, and relates to the technical field of bad root cause analysis, and the method comprises the steps: obtaining bad data and processing process data; performing comprehensive analysis on the bad data and the processing process data according to the comprehensive analysis framework so as to position intermediate link factors related to the bad product; performing root cause positioning analysis on the processing process data according to the bad data so as to preliminarily position a root cause station and root cause machine equipment; root cause positioning analysis is carried out on the processing process data according to the intermediate link factors related to the bad products so as to further position root cause machine equipment; and performing fusion judgment on the root cause site and the root cause machine equipment which are preliminarily positioned and the root cause machine equipment which is further positioned to obtain a comprehensive root cause positioning result. The root cause positioning of the processing equipment is carried out based on the comprehensive analysis framework, and the problem that comprehensive analysis and judgment cannot be realized due to isolation between different bad root cause analysis means is solved.

The invention provides a dynamic loading friction braking energy dissipation ship lock anti-collision device and method. The device comprises a lifting mechanism, a braking mechanism, an arresting mechanism and a steering mechanism. The lifting mechanism comprises a motor, a transmission mechanism, a winding drum and a steel wire rope wound on the winding drum, and the blocking mechanism is moved to a preset height through the steel wire rope for blocking; the blocking mechanism comprises a lower end steel wire rope and an upper end steel wire rope which are arranged on the steering mechanism in parallel in the vertical direction. The steering mechanism is used for guiding the steel wire rope of the lifting mechanism in the vertical direction into the lower end steel wire rope and the upper end steel wire rope of the parallel blocking mechanism; the brake mechanism comprises a brake disc arranged on the winding drum and brake disc brakes installed on the two sides of the brake disc. The technical problems that in the prior art, an anti-collision device is complex in structure, redundant in arrangement, insufficient in blocking performance and the like can be solved.

The present invention discloses a method for improving the detection sensitivity of a four-wave lateral shearing interferometer, which belongs to the field of optical precision detection. The method only needs to sample an interference fringe pattern, and the wavefront slope sensitivity of the four-wave lateral shearing interferometer can be increased by two times through fringe processing. The advantage of the present invention is that it solves the problem that the traditional four-wave lateral shearing interferometer needs to adjust the distance between the grating and the camera target surface to improve the sensitivity, the operation is complicated, and the adjustment error is large. The principle is clear and the operation is convenient.

The invention discloses a semi-arid region degraded wetland close-to-nature recovery method for slow-release water consumption conflict, belongs to the technical field of wetland ecological engineering, and solves the restrictive problems of prominent water consumption conflict and low wetland close-to-nature sustainable recovery efficiency in the collaborative development process of agricultural production and wetland recovery in a semi-arid region. The method comprises the following steps: 1, recovering wetland site selection and farmland water quantity accounting; 2, constructing an ecological water delivery network; 3, quantitatively blending farmland recession; 4, seed resource bionic introduction; 5, water resources are distributed in a timed and targeted mode; and sixthly, water resources are stored, monitored and evaluated in a staggered mode. The method is used for near-natural recovery of the degraded wetland in the semi-arid region on the premise of slow-release water conflict.

A flow velocity measuring tube, a main control module, a communication module and a lithium battery are all installed on a sinking frame, the sinking frame sinks into a riverbed and enables the flow velocity measuring tube to be in the water flow direction, and the flow velocity measuring tube is a reducer tube and comprises a first tube part and a second tube part; the pipe diameter of the first pipe part is larger than that of the second pipe part in the water flow direction, pressure sensors are arranged in the circumferential direction of the first pipe part and the circumferential direction of the second pipe part, the lithium battery provides electric energy for the pressure sensors, the main control module and the communication module, and the floating body floats on the water surface and is fixed to the sinking frame through a connecting rope. The communication module and the pressure sensor are connected with the main control module. Based on the Bernoulli principle, high-precision simultaneous measurement of the flow velocity and the water level of the river is realized by adopting a differential pressure measurement mode. The sensor is simple in design structure, clear in principle, free of interference and stable in data.

The invention discloses a pressurized water reactor nuclear power plant airborne C-14 annual discharge amount determination method, which comprises the following steps: S1, selecting a pressurized water reactor nuclear power plant which is of the same type and has been operated as a reference pressurized water reactor nuclear power plant, and taking C-14 operation discharge monitoring data of the reference pressurized water reactor nuclear power plant as a basis; and S2, calculating the C-14-year discharge amount of the pressurized water reactor nuclear power plant to be determined according to a formula. According to the method, on the basis of C-14 operation emission monitoring data of operated pressurized water reactor nuclear power plants of the same type, the airborne C-14 annual emission amount of the pressurized water reactor nuclear power plants is determined through factors such as reactor power, coolant density, energy utilization rate and radioactive effluent emission management plans; the method for determining the airborne C-14 concentrated emission amount according to the emission management factors of the reference nuclear power plant is clear in principle, simple in process and high in applicability, is suitable for analyzing the expected C-14 annual emission amount of the pressurized water reactor nuclear power plant and is also suitable for determining the conservative C-14 annual emission amount and the emission amount application value.

The invention discloses a demand side flexible resource participation multi-objective optimization modeling method and a related device. The method comprises the following steps: determining initial data including wind power generation, thermal power generating units, electric vehicle disordered charging, distributed electric heating and user side energy storage; an objective function of the multi-objective optimization model is determined, boundary conditions of the multi-objective optimization model are designed according to the objective function and the basic data, and the multi-objective optimization model is constructed; designing a conventional thermal power adjustment scene and a typical demand side flexible resource adjustment scene based on the auxiliary service market; based on a conventional thermal power adjustment scene and a typical demand side flexible resource adjustment scene, the obtained initial data are utilized, an improved particle swarm optimization algorithm is adopted to solve a multi-target optimization model, and an optimization solving result is output. According to the method, the regulation capability of the power grid is optimized, the wind curtailment rate and the wind curtailment cost are effectively reduced, the absorption capability of new energy is improved, the problem of power curtailment caused by blockage of a delivery section is reduced, and the method has important significance in promoting sustainable development of the new energy.

The invention belongs to the technical field of aviation machinery control, and relates to a method for automatically identifying an external hanging object, which comprises the following steps of: 1, defining an identification position for a hole position on an external hanging object connector; 2, defining a hole site on the external hanging object connector to put an external hanging object; 3, the external store is hung on the airplane through the hanging frame, the external store connector is in butt joint with the hanging frame connector, and the hook connector is in butt joint with the hanging frame connector; 4, the hook outputs a ground signal to the airborne task system through a hook connector, meanwhile, an identification signal of the external store is output to the airborne task system through a connector of the external store, the airborne task system collects the ground signal of the hook and the identification signal of the external store at the same time through a collection circuit, meanwhile, the airplane is in a ground state, and the hook is connected with the external store. The airborne task system completes automatic identification of the external store; and 5, reporting the type of the external store to a display control system through a bus after the identification is completed.

The application discloses an airborne equipment weighing device, which comprises an article support, a ball, a ball support, a pressure sensor, a pressure sensor display instrument, a pressure sensor support and a support base, the article support is supported on the ball, the ball is inlaid on the ball support, one end of the ball supports the article support, the other end of the ball is pressed on the pressure sensor, one end of the pressure sensor supports the ball, the other end of the pressure sensor is connected with the pressure sensor display instrument through a wire, the pressure sensor is installed on the pressure sensor support through screw threads, and the pressure sensor support is arranged on the support base. The application has the advantages of simple operation, small error, clear principle, convenient production, high practicability, easy popularization and application and great value.

This utility model discloses a vulcanized rubber sealing structure, including a metal skeleton and a rubber body. One end of the metal skeleton is tapered, and the diameter of the tapered structure gradually decreases outward along the axis. The apex angle of the axial section of the tapered structure is 1. The tapered surface of the metal skeleton is provided with an annular groove perpendicular to the center along the radial direction. The rubber body is placed in the annular groove and vulcanized with the metal skeleton. The outer surface of the rubber body is a tapered structure, and the apex angle of the axial section is 2. By controlling the angle between the vulcanized rubber and the sealing surface, the vulcanized rubber sealing structure is optimized to prevent the rubber from cracking due to pressure during sealing, resulting in high reliability.

A broadband voltage transformer error compensation method is proposed. First, a broadband test platform is constructed using a signal generator, power amplifier, standard voltage transformer, and high-bandwidth data acquisition system. The ratio and phase errors of the transformer at multiple frequency points are acquired through primary-side excitation and secondary-side synchronous acquisition. Based on the slope, first derivative, and second derivative characteristics of the error curve, the entire frequency band is adaptively divided into segments. Within each segment, multiple candidate models are fitted using a polynomial or exponential-linear combination model. The optimal model is selected based on the coefficient of determination, mean absolute error, and root mean square error. Ratio and phase error compensators are constructed based on the fitting functions of each segment, and error compensation is achieved using a feedforward approach. This method can significantly reduce amplitude and phase errors over a wide frequency range, improving the dynamic measurement accuracy of the voltage transformer.

The invention provides a mine drainage system design method integrating calculation, model selection and verification. The mine drainage system design method comprises the following steps that a drainage system design program is opened through double clicks, relevant basic parameters of a mine drainage system are input into a system, a'calculation and model selection basis' button is clicked, and relevant parameters of a water pump model selection basis are obtained through calculation; selecting a water pump and a motor according to relevant parameters of a water pump type selection basis, inputting the relevant parameters, and clicking a'drainage capacity checking calculation 'button to check whether the drainage capacity of the selected water pump and the motor meets relevant regulations of safety regulations or not; inputting the pipe diameter and the wall thickness of the primarily selected drainage pipe, clicking a'pipeline parameter calculation 'button, and checking whether the selected drainage pipe is reasonable or not. According to the mine drainage system design method integrating calculation, model selection and verification, the model selection efficiency is improved, the professional knowledge reserve capacity required by calculation and verification of the mine drainage system by related personnel is reduced, and a new thought is provided for design, model selection and calculation of related industry personnel.

The invention belongs to the technical field of pressurized water reactor coolant systems, and particularly relates to a displacement design method for an overpressure protection valve of a reactor coolant system. Comprising the following steps: step 1, initial calculation input; 2, establishing a conservation relational expression; step 3, a discrete solving process; 4, physical property updating; and 5, valve displacement is determined. The method has the beneficial effects that aiming at the problem that the design capacity is too proper due to the fact that the calculation input in the preliminary estimation process of the discharge capacity of the pressure relief valve of the pressure stabilizer excessively depends on experience and the calculation hypothesis is unreasonable, the reasonable thermal process hypothesis is introduced; a system pressure dynamic response analysis mathematical model caused by thermal expansion of a coolant system under a reactor coolant system-voltage stabilizer accident transient condition is established, so that the reasonable range of the discharge capacity of the pressure relief valve can be accurately determined, and the design demonstration period and precision of the discharge capacity of the pressure relief valve of the voltage stabilizer are remarkably shortened and improved; the method has the remarkable characteristics of clear principle and quick calculation.

The invention discloses a spacecraft analysis redundancy autonomous mining method based on diagnostic capability quantitative characterization, and belongs to the technical field of spacecraft overall. Firstly, a system input and output expression is constructed according to a state equation of a spacecraft control system; then, constructing system input and output expressions of different measurement channel combinations and equivalent expressions of the system input and output expressions; thirdly, giving random characteristics of system equivalent input and output of different measurement channel combinations, and on the basis, giving an analysis redundancy criterion based on a system dynamic model; secondly, a test data matrix is constructed based on spacecraft test data, and an analysis redundancy criterion based on the test data is given; and finally, giving a spacecraft analysis redundancy comprehensive criterion, and realizing spacecraft analysis redundancy autonomous mining. The method can be used for autonomous mining and redundancy analysis of the spacecraft, the autonomous fault diagnosis capability of the spacecraft is improved, and a solution is provided for realizing autonomous fault diagnosis of the spacecraft.

A method for regulating the targeted proliferation of food sources for the intestinal microorganisms of red-crowned cranes belongs to the field of wetland ecological engineering technology, and solves the restrictive problems of low efficiency of the coordinated cultivation of food source biological resources for red-crowned cranes and the lack of pathways for regulating the intestinal microorganisms of red-crowned cranes in a near-natural way. The method includes: 1. Improvement of the substrate environment and micro-geomorphological construction; 2. Zoning replenishment of water resources and addition of microbial agents; 3. Introduction and combination of food source organisms; 4. Sectional regulation of hydrological conditions; 5. Comparative evaluation of intestinal microorganisms of red-crowned cranes. The present invention is suitable for the targeted proliferation of food source organisms with the goal of regulating the intestinal microorganisms of red-crowned cranes.

The embodiment of the utility model discloses an observation pillar based on an expansion fixing effect, the observation pillar comprises an observation pillar main body and a foundation, the foundation comprises an expansion pipe and a threaded pile, and the observation pillar main body is connected to the upper end of the threaded pile; the upper section of the expansion pipe is an equal-diameter section, the lower section of the expansion pipe is a variable-diameter section, concave threads are arranged on the inner wall of the expansion pipe, a plurality of anti-sliding blocks are arranged around the outer wall of the variable-diameter section, the inner diameter of the variable-diameter section is gradually reduced from top to bottom, the thickness of the pipe wall is gradually increased, a parting seam is formed in the variable-diameter section, and the variable-diameter section is divided into two semicircular pipes through the parting seam. The outer wall of the threaded pile is provided with outer convex threads coupled with the inner concave threads on the inner wall of the expansion pipe. The observation pillar aims at solving the problems that in the prior art, cost such as basic material consumption and foundation pit excavation volume of an observation pillar used for monitoring the apparent deformation of the waste slag field is high, and construction efficiency is low.

A centrifugal fan performance degradation assessment method and system based on operating parameters, comprising the following steps: Step 1, obtaining the operating data of the centrifugal fan for T consecutive days during the initial period of use as performance benchmark data; Step 2, obtaining the recent operating data of the centrifugal fan for T consecutive days of a pair of related parameters selected in step 1 as performance evaluation data; Step 3, calculating the two-dimensional discrete distribution matrix of the performance benchmark data set and the performance evaluation data set; Step 4, weighting the overlapping values ​​of each matrix interval to obtain a performance evaluation score; Step 5, judging whether the performance of the centrifugal fan has degraded according to the performance evaluation score. The present invention is based on the fact that the fan operating parameters are mainly performance parameters, and uses two-dimensional discrete distribution overlap analysis to calculate the performance score. The principle is clear and the performance score result is interpretable. It makes up for the problem of the lack of performance degradation analysis methods for centrifugal fans at present, and solves the technical difficulties of fan performance degradation analysis.

The invention provides a ship lock safety blocking device and method for dissipating energy through a hydraulic oil cylinder. The device comprises lifting mechanisms symmetrically arranged on a lock top, an energy absorption oil cylinder mechanism, a steel wire rope steering mechanism and a steel wire rope guide mechanism arranged in a lock wall gate groove. The lifting mechanism is used for winding, unwinding and braking the steel wire rope; and the steel wire rope passes through the guide mechanism to form a barrier line after being redirected by the steering mechanism. When a ship collides with the steel wire rope, collision force drives the piston rod of the energy absorption oil cylinder to stretch out, kinetic energy of the ship is converted into heat energy by compressing hydraulic oil, and stable buffering and efficient energy dissipation are achieved. The device is simple in structure, convenient to maintain and capable of adapting to water level changes and effectively absorbing high-impact kinetic energy, the reliability and performance of ship lock safety barrier are remarkably improved, and the technical problems that in an existing technical scheme, a barrier device is complex in structure, troublesome to overhaul and maintain, insufficient in barrier performance and the like can be solved.

The invention discloses a high-precision edge sensor for splicing mirror surfaces and a working method of the high-precision edge sensor in the technical field of mirror surface splicing, the high-precision edge sensor comprises a high-reflection bridging device, the bridging device is arranged in a gap between adjacent spliced sub-mirrors, and a Shack-Hartmann wavefront sensor is arranged behind the bridging device arranged in each sub-mirror. High-reflection bridging devices stretching across adjacent sub-mirrors are installed between splicing seams which are several millimeters wide of a narrow spliced mirror surface, a working light path of an optical system is utilized, the overall tilt error of each sub-mirror is obtained through a Shack-Hartmann wavefront sensor on a system focal plane, and meanwhile the overall tilt error of each sub-mirror is measured through the Shack-Hartmann wavefront sensor, and the overall tilt error of each sub-mirror is measured through the Shack-Hartmann wavefront sensor. And the inclination error at the abutted seam can be obtained (detected on the sub-aperture where the bridging device on the abutted seam is located). The invention has the advantages of extremely low price, stable performance and extremely high precision, is not influenced by environmental factors, and is extremely convenient to install, assemble and debug. The method is suitable for detecting the splicing error between the adjacent sub-mirrors of various optical splicing mirror surfaces.

The invention belongs to the technical field of the Internet of Things, and discloses an Internet of Things monitoring method and device for the growth state of lobsters in a rice field, and the device comprises a lobster collecting module, a solar charging module and a telescopic image recognition module, and the telescopic image recognition module obtains a lobster growth condition monitoring original image collected by the lobster collecting module; and the obtained lobster growth condition monitoring source is transmitted to the cloud data server through the 4G channel, so that the growth change of the lobster can be monitored. According to the method, the growth state of the lobsters in the rice field is monitored in an internet-of-things mode, and yield and productivity prediction in the lobster breeding process is achieved.

The present invention discloses a nondestructive detection device and method for grouting defects of concrete components based on impact echo, which specifically relates to the technical field of building structure detection, including a mounting base, a bracket fixedly provided at the middle of one end of the top surface of the mounting base and a support platform fixedly provided at the middle of the other end, a vertical plate fixedly provided at the position corresponding to the edge of the bracket on one side of the top surface of the mounting base, a driving mechanism provided between the vertical plate and the bracket, a hammering and impacting mechanism provided between the bracket and the support platform, and a linkage between the driving mechanism and the hammering and impacting mechanism. The present invention collects signals of grouting compact concrete components and grouting sleeve components to be detected by using impact echo, takes the component signal of sleeve grouting compactness as a comparison signal, and uses the signal thickness frequency and main frequency amplitude obtained by Fourier transform to judge whether the grouting in the sleeve has defects in real time, and simultaneously locates the sleeve with grouting defects, which is simple to operate, convenient to detect, and has good applicability.

The invention discloses a rice remote sensing mapping method based on unique spectral characteristics in a rice transplanting period, and relates to a rice remote sensing identification method. The method aims at solving the problems that an existing rice drawing method is poor in mobility, a large number of parameters or threshold values need to be set, and long-time-sequence or year-round remote sensing data are relied on. The method comprises the following steps: 1, determining a wave band combination reflecting a unique color in a rice transplanting period; 2, mapping a spectral band to a CIE color space; and 3, constructing a rice identification method in a CIE color space. The method is clear in principle, simple, rapid, high in automation degree and particularly suitable for large-scale (national / intercontinental / global) rice drawing, and has huge application potential and wide application space. The invention belongs to the field of remote sensing mapping.

The invention relates to the technical field of marine hydrological monitoring, and in particular to an underwater profile density measurement system and method. The system comprises a survey ship, an anchor, a steel wire rope, a wire walker, a parameter measuring device, a measurement and control transmission rope, and a data analysis system; the method comprises: throwing the anchor connected to the steel wire rope into the water bottom for anchoring and fixing; the parameter measuring device enters the water along the measurement and control transmission rope and keeps active connection with the steel wire rope; the measurement and control transmission rope is pulled upward from the anchor point along the steel wire rope according to marks at equal intervals one by one, and two water pressure values ​​and attitude angle values ​​measured by the parameter measuring device at different depths underwater are collected; the collected data are stored in the data analysis system, and the water body density around the parameter measuring device is obtained by a built-in algorithm; after the parameter measuring device moves upward from the anchor point out of the water, the data of each measured point are integrated to obtain the total water depth at the anchor point, and then the profile density values ​​of the measuring device at different depths underwater are obtained, and a generated curve is drawn.

The invention provides an inverter VSG control strategy introducing a negative droop link and a parameter design method thereof, and belongs to the field of inverter control, and the method comprises the following steps: 1, constructing a VSG active control ring, introducing the negative droop link in the VSG active control ring, and changing a VSG active power reference value; 2, determining an inertia coefficient in a VSG active control ring according to the inertia supporting capability requirement; step 3, determining a damping coefficient in the VSG active control loop under the inertia coefficient in the step 2 according to the stable operation requirement of the inverter; step 4, determining an equivalent droop coefficient to be embodied by the inverter according to a primary frequency modulation requirement; step 5, configuring a gain coefficient of a negative droop link to enable an equivalent droop coefficient which should be reflected by the inverter to meet requirements; by introducing a negative droop link, parameter design difficulty caused by coupling of a damping characteristic and a droop characteristic in VSG control is overcome, and the droop coefficient of the inverter is within a reasonable range while the stability of the inverter under VSG control is ensured.

The present invention belongs to the field of electrical technology, and relates to a servo DC-DC converter topology applied to an intelligent robot. In the topology of a half-bridge LLC circuit, the positions of L and C are adjusted and reactive current is added simultaneously so that the switch tube works in a soft switching state throughout the whole process. The conduction duty cycle of the switch tube Q1 is theoretically 0-99.99%, and the corresponding transmission gain is 0-infinity, which effectively solves the problem of the narrow adjustment range of the LLC circuit; the reactive current is introduced and the reactive current loop is relatively independent, so that the primary switch tubes Q1 and Q2 and the secondary diodes D3 and D4 are fully soft-switched, which solves the problem of non-full-range soft switching of the lagging arm of the phase-shifted full-bridge circuit; the circuit is simple, the principle is clear, and it is insensitive to the parameter accuracy of all devices, especially the leakage inductance of the transformer T1, and the inductance values ​​of L1 and L2, which greatly reduces the requirements for hardware parameters during production, and at the same time reduces the heat dissipation requirements, greatly reduces the volume of the servo power supply, and fully meets the characteristic requirements of the servo DC-DC of the intelligent robot.

The invention belongs to the technical field of antennas, and relates to a dual circular polarization reconfigurable antenna which comprises a dielectric substrate, a radiation layer arranged on the upper surface of the dielectric substrate and a floor layer arranged on the lower surface of the dielectric substrate. The radiation layer comprises a radiation patch, a branch patch and a microstrip line; the radiation patch is connected with the floor layer; the branch patch is of a V-shaped structure and is connected with a group of adjacent edges of the radiation patch through a pair of diodes in opposite directions; one end of the microstrip line is connected with the branch patch, and the other end of the microstrip line is connected with an external radio frequency port, so that the branch patch and the microstrip line form a Y-shaped structure; a direct current bias signal is input into the radio frequency port, so that one diode is switched on, and the other diode is switched off, and dual circular polarization reconfiguration of the antenna is realized. According to the invention, the bias control signal of the diode can be embedded into the radio frequency signal, and the polarization radiation reconfiguration of the dual-circular polarization electromagnetic wave of the antenna is realized.

The flight control power supply protection circuit comprises a high-reliability switch power supply module, an undervoltage detection module, an electric load module, a resistance voltage division and AD conversion module, a current sampling resistance module, a current AD conversion module and an MCU module. The high-reliability switch power supply circuit is used for transmitting power to the electricity load module; the under-voltage detection circuit is used for outputting a power supply protection signal if the power supply voltage output by the high-reliability switch power supply module is too low; the resistance voltage division and AD conversion module is used for performing resistance voltage division and AD conversion on the output voltage; the current sampling resistor module is used for acquiring a current sampling signal of a power supply; the current AD conversion module is used for amplifying the current sampling signal and then performing AD conversion; and the MCU module is used for receiving and detecting the converted current and voltage, and deciding whether to carry out autonomous power supply protection or to carry out power supply protection by the MCU according to the working state and the flight height of the aircraft. Special application requirements of the aircraft are fully considered, and the circuit is simple and high in reliability.

The present invention relates to a method for centering and adjusting the output shaft of an equipment and the input shaft of a product, and is used for the rapid centering and adjusting the input shaft of a main reducer and the connecting shaft of a high-speed gearbox; the centering tooling used in the present invention includes a first dial indicator and a second dial indicator; during installation, the fixed end of the base of the first dial indicator is fixed on the output shaft of the high-speed gearbox, the first dial indicator head contacts the end face of the diaphragm disc shaft, the second dial indicator is installed on the diaphragm disc-gear coupling through a bracket, and the second dial indicator head contacts the sealing mounting surface of the main reducer input shaft; wherein the second dial indicator head and the first dial indicator head are in the same plane and perpendicular to each other. By calculating the angular deviation of the axis of the main reducer input shaft and the output shaft of the high-speed gearbox of the test bench, a theoretical basis and guidance are provided for adjusting the angular deviation of the two within a reasonable range.

The invention discloses an anti-conductive roller copper plating device and method for acid copper plating equipment, and belongs to the technical field of electroplating equipment. The anti-conductive roller copper plating device comprises a first contact roller arranged at a plating solution outlet; the liquid squeezing roller is in pressure contact with the first contact roller; the contact point of the liquid squeezing roller and the first contact roller coincides with the tangent point of the base material film and the first contact roller. Physical extrusion removal is directly carried out on the first position where the plating solution is brought out, the amount of the plating solution flowing to the subsequent conductive roller is fundamentally reduced, and therefore the possibility that copper deposition occurs on the surface of the conductive roller is greatly reduced. Experiments show that after the method is adopted, the conductive roller can be kept clean for a long time and does not need to be cleaned frequently, and the method is clear in principle and can be widely applied to various acidic copper plating devices adopting roller transmission systems, especially continuous electroplating production lines of flexible base materials such as PET / PI and the like.