44results about How to "Simple physical structure" patented technology

The invention discloses an electronic voltage transformer using data fusion technology and an error calibration method thereof. The error calibration method comprises the following steps of: acquiring a secondary measured voltage by using a capacitive voltage divider and a sampling resistor R, accessing the voltage to a data acquisition processor for sampling, and tracing the frequency of the voltage; accessing a signal of a temperature sensor to the data acquisition processor, and computing the temperatures of measuring points; dynamically computing a divided voltage ratio of the capacitive voltage divider according to the temperature variation of the measuring points by using data acquisition device processing software so as to modify a transformation ratio error of the transformer; dynamically computing phase deviation according to signal frequency variation by using the data acquisition device processing software so as to modify a phase error; and outputting a digital sampling value through an optical fiber interface. The device is simple in structure, safe and practical; errors caused by manufacturing factors, temperature and signal acquisition circuits and the like can be effectively modified and restrained; and the measuring accuracy, temperature stability and transient performance of the electronic voltage transformer according to a capacitive voltage division principle are improved.

The invention relates to a device and a method for on-orbit monitoring of charging of a satellite material surface, belonging to the technical field of space application. The device comprises an electron gun, a non-contact potentiometer probe, a three-dimensional transmission mechanism, a non-contact surface potentiometer, an electron beam current density measuring system, a monitoring electrode,a supporting structure, a first electromagnetic valve, a second electromagnetic valve, a diffusion pump, a third electromagnetic valve, a vacuum box, a mechanical pump, a vacuum penetrating wall, a measurement circuit interface and a measurement circuit. The test method comprises the steps as follows: sending an electron to a sample for monitoring the electrode surface under a vacuum condition, adjusting the position of the non-contact potentiometer probe through the three-dimensional transmission mechanism, recording charging potential Vsurface on the sample surface, measuring leakage current I through the measurement circuit, and finally obtaining a proportional relation coefficient K by known sample resistance rho according to the formula that Vsurface is proportional to KrhoI. According to the invention, the on-orbit surface charging condition of the satellite material is inverted by monitoring the leakage current of the sample in a space environment, and the device and the methodhas the advantage of simple physical structure and is easy to carry in space.

The invention discloses an axial-mode cylindrical helical antenna. The axial-mode cylindrical helical antenna comprises a helical radiator, a medium supporter, a feed matcher, a grounding board and a radio-frequency (RF) coaxial connector, wherein the helical radiator is of a cylindrical shape which is formed in a manner that a copper pipe is sequentially and helically encircled rightwards, and a variable-lift-angle helical structure is formed in a manner that the helical radiator extends to the circumference of a cylindrical bottom face from the circle center of the bottom face along the radial direction and then extends along the axial direction in a rising manner; the medium supporter is fixedly arranged on the grounding board; the feed matcher is of an inverted-L-shaped microstrip structure and divided into a horizontal part and a vertical part; the starting end of the helical radiator is arranged on the horizontal part which is stuck to the upper surface of the medium supporter and supported by the medium supporter; the RF coaxial connector is vertically arranged on the grounding board, and the top end of an inner conductor of the RF coaxial connector is connected with the vertical part; and an outer conductor of the RF coaxial connector is connected with the grounding board. The axial-mode cylindrical helical antenna has the advantages of flexible design, simple physical structure, excellent antenna performance and wide application.

The invention discloses a quantum chaotic image encryption method based on bit scrambling. The method comprises steps: a Logistic quantum chaotic system is used for generating a chaotic sequence, bit scrambling is carried out on R, G and B three-primary color component pixel values of an original image p, and a middle scrambling image I is obtained; and then, encryption operation is carried out on the middle scrambling image I, and a final encryption image q is obtained. The encryption method of the invention greatly increases the secret key space, the safety, the encryption effect and the secret key sensitivity are higher, the anti-attack ability is stronger, and the deciphering difficulty is greatly improved.

The invention discloses an underwater positioning method based on single acoustic beacon distance measurement; the method comprises the following steps: an underwater vehicle carries out slope distance measurement with an acoustic beacon in a fixed position via an underwater acoustic communication set at a fixed frequency, the acoustic beacon sends self depth to the vehicle, the vehicle combines the acoustic beacon and self real time depth so as to calculate the depth difference and horizontal distance between the vehicle and the acoustic beacon; secondarily, in a navigation process, the vehicle uses a compass and a Doppler tachymeter to obtain self accuracy course and speed, thus obtaining the accurate navigation locus of the vehicle in certain period; finally, the vehicle uses the rangefinding sequence and the curse as constraints, uses the acoustic beacon position as reference, and matches and positions a real time relative navigation locus in an acoustic beacon coverage area, thusdetermining the present position. An existing underwater acoustic positioning method has more elements, is complex in structure, high in cost, and a curse reckoning method has accumulated errors andneeds the start point position information in calculation; the underwater positioning method based on single acoustic beacon distance measurement can solve said problems.

The invention discloses an intelligent network water and electricity pile system. The system comprises a pile body hardware system and a corresponding management software system; a pile body comprises a control module and a pile body function peripheral device, and the pile body can operate independently; the pile body can have access to the internet; the pile body can automatically obtain a dynamic IP address of the internet; the pile body can conduct remote control through the internet; the pile body can serve as a secondary pile, and multiple primary piles are additionally arranged to be matched with the secondary pile to form a distributed primary-secondary pipe body hardware service support system. According to the intelligent network water and electricity pile system, intelligent network water and electricity pile software is combined with intelligent water and electricity pile hardware, the system can help a client to precisely find campsites such as caravan campsites, scenic regions, scenic spots and agritainment and electric car charging stations or electric car charging piles which are distributed all over the country, and online reservation and payment can be conducted. By means of real-time communication with an operation management center, requirements of users can be responded to in time.

The invention relates to an alternating-current header box adopting carrier communication and a photovoltaic power station. The alternating-current header box comprises an intelligent acquisition unit, a busbar, an input breaker, a current transformer and a lightning protector, wherein the intelligent acquisition unit is used for acquiring a signal, then loading the acquired signal to the current of a power supply cable in a high-frequency signal mode and then transmitting the current by use of power; the low voltage side of a box transformer substation is provided with a carrier wave module and a communication management unit; the carrier wave module is used for decomposing the high-frequency signal from the current of the power supply cable; and the acquired signal is transmitted to a monitoring system by virtue of the communication management unit. According to the alternating-current header box, a power-line carrier technology is adopted for transmitting data, so that the alternating-current header box is simple in structure, relatively low in cost, stable in performance and convenient in system overhaul and maintenance.

The invention provides a trusted computing system and method based on a trusted computing environment, and the system comprises a trusted hardware layer which comprises a CPU and an RPMB secure storage area; the TEE environment comprises a Trusted OS layer and a trusted root TA layer; the secure communication layer is used for realizing state switching and data exchange between the REE environment and the TEE environment through a secure message instruction provided by the CPU; the REE environment comprises a trusted firmware UEFI-BIOS module, a trusted bootstrap program Trusted Grub module, a trusted kernel Trusted Kernel module and a trusted client module from bottom to top; each module in the REE comprises a trusted base; and the application layer comprises various business applications. According to the trusted computing system and method based on the trusted computing environment, the production and manufacturing cost of a host can be saved, the physical structure of the system is simplified, the operational capability and the communication rate are improved, and maintenance and upgrading are facilitated.

The invention relates to an image encryption method, and particularly relates to a chaotic image encryption method based on area-preserving Baker mapping. The method has a simple process, the space-time complexity can be enhanced, the computer precision restriction problem can be solved, and the encryption algorithm complexity can be increased. Meanwhile, as the chaotic system of the invention adopts a quantum chaotic system which is more complex that a common chaotic system, in the quantum chaotic system, the addition of disturbing momentum enables the chaotic system to be better in aperiodicity and stronger in sequence randomness, and problems of a fixed point and a stable window existing in the common chaotic system can be improved and solved.

The invention discloses an electronic voltage transformer using data fusion technology and an error calibration method thereof. The error calibration method comprises the following steps of: acquiring a secondary measured voltage by using a capacitive voltage divider and a sampling resistor R, accessing the voltage to a data acquisition processor for sampling, and tracing the frequency of the voltage; accessing a signal of a temperature sensor to the data acquisition processor, and computing the temperatures of measuring points; dynamically computing a divided voltage ratio of the capacitive voltage divider according to the temperature variation of the measuring points by using data acquisition device processing software so as to modify a transformation ratio error of the transformer; dynamically computing phase deviation according to signal frequency variation by using the data acquisition device processing software so as to modify a phase error; and outputting a digital sampling value through an optical fiber interface. The device is simple in structure, safe and practical; errors caused by manufacturing factors, temperature and signal acquisition circuits and the like can be effectively modified and restrained; and the measuring accuracy, temperature stability and transient performance of the electronic voltage transformer according to a capacitive voltage division principle are improved.

The invention relates to a data returning method and device, a terminal, an unmanned aerial vehicle and a readable storage medium. The method comprises the steps that a terminal receives a downlink control signal issued by an unmanned aerial vehicle according to a preset frame structure, the downlink control signal carries an instruction used for indicating the terminal to receive and analyze service data, and the terminal is in wireless direct connection communication with the unmanned aerial vehicle; Wherein the preset frame structure comprises a downlink control channel sub-frame for directly transmitting a downlink control signal, an uplink control channel sub-frame for directly transmitting an uplink control signal and a service channel sub-frame for directly transmitting service data; And the terminal sends a response to the unmanned aerial vehicle on a frequency domain resource corresponding to the uplink control channel subframe according to the downlink control signal, and receives service data directly transmitted by the unmanned aerial vehicle on the frequency domain resource corresponding to the service channel subframe. By adopting the method, the unmanned aerial vehicle can directly return the service data to the terminal, base station transfer is not needed, the physical structure is simple, and the robustness is high.

The invention discloses a heat shrink film manufacturing winding machine capable of being replaced without shutdown and a using method of the heat shrink film manufacturing winding machine, and relates to the technical field of heat shrink film manufacturing. The heat shrink film manufacturing winding machine capable of being replaced without shutdown comprises a bottom plate, a mounting plate and a driving motor are fixed to the top of the bottom plate, and two longitudinally-arranged rotating shafts are arranged between the front side and the rear side of the mounting plate in a penetrating mode. According to the heat shrink film manufacturing winding machine capable of being replaced without shutdown and the using method of the heat shrink film manufacturing winding machine, the two rotating shafts with the opposite rotating directions are arranged so that two winding rollers can be driven to achieve the reverse rotating effect, and one winding roller can achieve the winding effect on a heat shrink film; and when the thickness of the heat shrinkage film wound on one winding roller reaches the maximum value, an automatic cutting-off mechanism can automatically cut off the heat shrinkage film, so that the replacement effect of the winding rollers without shutdown is achieved when the heat shrinkage film is wound, and the winding efficiency of the winding machine on the heat shrinkage film is improved.

The invention discloses a hanging insulator string split detection robot, which comprises a frame, a roller mounted on the frame and capable of rotating on the frame, a controllable motorized winch that drives the roller to rotate, and one end fixedly connected to the roller The twisted grinding rope on the twisted grinding rope, the body of the insulator detection device fixed on the other end of the twisted grinding rope, the insulator detection unit installed on the body of the insulator detection device, the body of the insulator detection device includes a second controller chip, a second communication module, a second motor The driver, the third motor driver and the signal conditioning module, the insulator detection unit includes the first mechanical gripper, the first probe, the first gripping rotating motor, the first robotic arm, the first arm rotating shaft, the arm rotating motor, and the distance measuring sensor and detection sensor unit bracket and top rotation shaft mount. The invention has the advantages of simple physical structure, convenient tower climbing, high operation safety and the like.

The invention relates to a device and a method for on-orbit monitoring of charging of a satellite material surface, belonging to the technical field of space application. The device comprises an electron gun, a non-contact potentiometer probe, a three-dimensional transmission mechanism, a non-contact surface potentiometer, an electron beam current density measuring system, a monitoring electrode,a supporting structure, a first electromagnetic valve, a second electromagnetic valve, a diffusion pump, a third electromagnetic valve, a vacuum box, a mechanical pump, a vacuum penetrating wall, a measurement circuit interface and a measurement circuit. The test method comprises the steps as follows: sending an electron to a sample for monitoring the electrode surface under a vacuum condition, adjusting the position of the non-contact potentiometer probe through the three-dimensional transmission mechanism, recording charging potential Vsurface on the sample surface, measuring leakage current I through the measurement circuit, and finally obtaining a proportional relation coefficient K by known sample resistance rho according to the formula that Vsurface is proportional to KrhoI. According to the invention, the on-orbit surface charging condition of the satellite material is inverted by monitoring the leakage current of the sample in a space environment, and the device and the methodhas the advantage of simple physical structure and is easy to carry in space.

Disclosed is a programmable logic circuit control apparatus capable of managing data with various bit widths and data lengths, generated by various processes to be executed by a programmable logic circuit, with a simple structure. A module address memory section (4) stores data indicating addresses of modules or conditions for branching processes and jump distances page by page. A write address and a read address of an internal data memory (2) are also stored in a page where the address of a module is stored. A circuit control section (5) reads data of each page from the module address memory section (4), and, according to the read data, reads a module, reconfigures a programmable logic circuit and reads data of a next page, or performs jump. When the programmable logic circuit is to be reconfigured, the circuit control section (5) performs an operation of supplying a write address and a read address to the internal data memory (2).

The invention relates to a method for direct force pulse width modulation at an aircraft end. Characteristics of an existing aircraft rail-controlled direct force control mode are analyzed and a direct force pulse width modulation control method is put forward. To be specific, according to the method, direct engine nozzles are distributed in a cross-shaped manner and the direct thrust can not be adjusted; and an objective of controlling direct force lasting time is achieved by turning on an opposite valve. Besides, the direct force control strategy of the control method includes: providing a thrust equivalent principle based on the characteristics of the control method and deducing direct engine startup time; according to the thrust equivalent principle, calculating residual flight time and an estimated miss distance and designing maneuver estimation on the target based on an extended state observer; and designing a zero-miss-distance-based variable structure guidance law to solve a displacement correction limit problem of the thrust equivalent principle.

The invention discloses a high-energy electron defending method of a foldable mechanism. The method is achieved through an inflating unfolding film, an inflating device, a solid powder releasing device, a temperature maintaining device and a sensor system; by combining the inflating unfolding film and spread solid powder, space high-energy electrons can be effectively defended. The high-energy electron defending method of the foldable mechanism has the advantages of being simple in physical structure, light in weight, easy to implement and the like.

The invention discloses a quantum chaotic image encryption method based on bit scrambling. The method comprises steps: a Logistic quantum chaotic system is used for generating a chaotic sequence, bit scrambling is carried out on R, G and B three-primary color component pixel values of an original image p, and a middle scrambling image I is obtained; and then, encryption operation is carried out on the middle scrambling image I, and a final encryption image q is obtained. The encryption method of the invention greatly increases the secret key space, the safety, the encryption effect and the secret key sensitivity are higher, the anti-attack ability is stronger, and the deciphering difficulty is greatly improved.

The invention belongs to the field of automation control controlled by a PLC (programmable logic controller), and particularly relates to an intelligent granary control cabinet suitable for a granary and a use method of the intelligent granary control cabinet. The intelligent granary control cabinet comprises a circular inflation and air-conditioning unit, an intelligent ventilation unit, a grain condition detection unit and a safe warehousing unit, wherein the grain condition detection unit provides data support for the circular inflation and air-conditioning unit, the intelligent ventilation unit and the safe warehousing unit; a 1#PLC is arranged in the control cabinet, the 1#PLC analyzes and judges real-time data uploaded by PLCs of all the units, the units are actively coordinated to work in a matched mode, grain ventilation is not allowed and personnel are not allowed to enter the granary during circular inflation and air-conditioning operation, and at the moment, a granary door is automatically locked; and after the personnel enter the granary, the circular inflation and air-conditioning operation and the like are not allowed to be started, and at the moment, the program of the circular inflation and air-conditioning unit executes safety protection. Therefore, data sharing and mutual cooperation among the units provide guarantee for high-quality storage of grains in the granary and safe warehousing of personnel.

The invention relates to a vehicle front cover locking force measuring device and a vehicle front cover locking force measuring method. The method for measuring the locking force of the front cover of an automobile is characterized in that it includes the following steps: a fixing step of placing the lock cylinder of the front cover of the automobile in the box structure tooling and fixing the box structure tooling to the vehicle body; The two sides of the structural tool form the deformation beam forming step of two deformation beams; the strain gage setting step of pasting a plurality of strain gauges on the deformation beam; the electric bridge forming step of electrically connecting the plurality of strain gauges to form an electric bridge ; The pressure measurement step of obtaining the force received by the front lock of the automobile by measuring the output voltage of the electric bridge. By using the vehicle front cover locking force measuring device and the automobile front cover locking force measuring method of the present invention, the pressure on the front cover lock can be accurately measured without destroying the original vehicle structure.

A contact-type artificial anal sphincter prosthesis limit protection switch device, comprising: a motor casing, a transmission mechanism arranged in the motor casing, a swing arm mechanism, a limit mechanism and a controller, wherein: the swing arm mechanism and the transmission mechanism Connected, the limit mechanism includes: two limit switches connected to the controller respectively arranged on the swing arm mechanism and the motor casing, the first limit switch and the second limit switch are both switch round buttons and connected in series A limit switch circuit composed of a 10K resistor, the limit switch circuit leads to a high-level wire, a signal wire and a ground wire. In the present invention, by setting the limit switch, the switch round button can be pressed at the limit position where the swing arm of the lower ring swings to the left and right, respectively, to trigger the limit signal, and the limit signal generated by the limit switch will be transmitted to the controller for further processing. processing, simple structure, easy to realize, and high stability.

The present invention provides a manufacturing method for a semiconductor memory device. The method comprises: providing a substrate, wherein a gate structure of a memory transistor is formed on a memory area of the substrate, and a first layer used for forming a gate structure of a peripheral transistor is formed on a peripheral area of the substrate; performing lightly doped drain ion implantation on an upper part of a portion, on two sides of the gate structure of the memory transistor, of the memory area of the substrate by applying the first layer as a mask of the peripheral area; and etching the first layer to form the gate structure of the peripheral transistor. According to the present invention, an ion diffusion degree of source and drain electrodes of the memory area may be effectively increased, and the uniformity of a memory cell device is improved.

This invention relates to a locking force measurement method and a locking force measurement device for an automobile front cover. The locking force measurement method for the automobile front cover comprises steps of putting an automobile front cover key cylinder in a box structure tooling which is fixed with the automobile body, forming the two sides of the box structure tooling into two deformable beams, adhering a plurality of strain gauges on the deformable beams, forming an electric bridge through electrically connecting the plurality of strain gauges, and obtaining the received force on the automobile front lock by measuring the voltage outputted by the electrical bridge. By utilizing the locking force measurement method and the locking force measurement device for the automobile front cover, the pressure applied on the front cover lock can be accurately measured without destroying the conventional structure of the automobile.

The invention provides a sensing method of a fiber grating earth sound sensing system. A fiber grating earth sound sensing probe is included, and comprises a fiber, a chirping weak grating, a spring,a mass block, another chirping weak grating and a cylinder; the two ends of the spring are connected with the mass block and the cylinder respectively; and the two ends of the fiber are glued to the mass block and the cylinder respectively. The two chirping gratings including low-reflectivity gratings with the same reflection spectrum, the reflectivity is lower than 1%, and the gratings are arranged beyond a strain sensing area to prevent the grating themselves from strain influence. The invention also discloses a sensing system based on the ground sound sensing probe, and multiple probes canbe multiplexed in a large scale in the system. The sensing probe is simple in structure and high in sensitivity, the time division multiplexing sensing system is constructed based on the probe, the number and sensitivity of a sensor can be configured flexibly according to the concrete application scene, large-scale wide-area sensing monitoring is realized, and the application prospects are good.

The present invention provides a manufacturing method for a semiconductor memory device. The method comprises: providing a substrate, wherein a gate structure of a memory transistor is formed on a memory area of the substrate, and a first layer used for forming a gate structure of a peripheral transistor is formed on a peripheral area of the substrate; performing lightly doped drain ion implantation on an upper part of a portion, on two sides of the gate structure of the memory transistor, of the memory area of the substrate by applying the first layer as a mask of the peripheral area; and etching the first layer to form the gate structure of the peripheral transistor. According to the present invention, an ion diffusion degree of source and drain electrodes of the memory area may be effectively increased, and the uniformity of a memory cell device is improved.

The invention discloses an axial-mode cylindrical helical antenna. The axial-mode cylindrical helical antenna comprises a helical radiator, a medium supporter, a feed matcher, a grounding board and a radio-frequency (RF) coaxial connector, wherein the helical radiator is of a cylindrical shape which is formed in a manner that a copper pipe is sequentially and helically encircled rightwards, and a variable-lift-angle helical structure is formed in a manner that the helical radiator extends to the circumference of a cylindrical bottom face from the circle center of the bottom face along the radial direction and then extends along the axial direction in a rising manner; the medium supporter is fixedly arranged on the grounding board; the feed matcher is of an inverted-L-shaped microstrip structure and divided into a horizontal part and a vertical part; the starting end of the helical radiator is arranged on the horizontal part which is stuck to the upper surface of the medium supporter and supported by the medium supporter; the RF coaxial connector is vertically arranged on the grounding board, and the top end of an inner conductor of the RF coaxial connector is connected with the vertical part; and an outer conductor of the RF coaxial connector is connected with the grounding board. The axial-mode cylindrical helical antenna has the advantages of flexible design, simple physical structure, excellent antenna performance and wide application.

The invention discloses an intelligent network water and electricity pile system. The system comprises a pile body hardware system and a corresponding management software system; a pile body comprises a control module and a pile body function peripheral device, and the pile body can operate independently; the pile body can have access to the internet; the pile body can automatically obtain a dynamic IP address of the internet; the pile body can conduct remote control through the internet; the pile body can serve as a secondary pile, and multiple primary piles are additionally arranged to be matched with the secondary pile to form a distributed primary-secondary pipe body hardware service support system. According to the intelligent network water and electricity pile system, intelligent network water and electricity pile software is combined with intelligent water and electricity pile hardware, the system can help a client to precisely find campsites such as caravan campsites, scenic regions, scenic spots and agritainment and electric car charging stations or electric car charging piles which are distributed all over the country, and online reservation and payment can be conducted. By means of real-time communication with an operation management center, requirements of users can be responded to in time.

The present application provides an iron tower monitoring method, device, computer equipment and storage medium for receiving the first transmission time of the first radio signal sent from the first communication device to the second communication device, the first communication device is fixed at the position of the first iron tower, The second communication device is fixed at the position of the second iron tower; receiving the first receiving time of the second radio signal received by the first communication device and forwarded by the second communication device according to the first radio signal; according to the first receiving time and the first sending Time, determine the first duration value of the round trip of the radio signal between the first communication device and the second communication device, with the first communication device as the master device; determine the tower monitoring result according to the first duration value and the preset threshold. In this way, the monitoring result is accurate. At the same time, the required physical structure is simple, and the cost of the required equipment is low, and it only needs to install the communication equipment at the corresponding position.