330results about How to "Good adaptability" patented technology

The invention discloses an automatic guide and obstacle avoidance method for a robot. The method comprises steps as follows: a global route from a start position to a target position is planned according to an acquired scene map; the robot moves toward the target position in an automatic navigation and location manner according to the scene map and the well planned global path, and a sensor is used for acquiring information of the front of the route in real time; when a dynamitic barrier is determined to exist in the front, whether the robot can cross the dynamic barrier in an obstacle avoidance manner is judged; if yes, the robot crosses the dynamic barrier in an obstacle avoidance manner, and otherwise, a route leading to the target position is replanned with the current position serving as the start position, and the deviation between the new planned route and the original global route doesn't exceed a threshold; or when the distance between the robot and the dynamitic barrier is in the threshold range, the dynamitic barrier is reminded to leave the current route in a voice manner, and the robot continues moving toward the target position. According to the method, the scene environment is not required to be modified, and the robot can automatically avoid the barrier and has higher adaptability.

The invention discloses a digital signature method for escrowing the private key of a mobile terminal. The mobile terminal needs to provide digital signature service in the development of e-government application, however, at present, the mobile terminal is lack of a safety condition providing a private key saving digital signature, the private key is likely to be stolen by a hacker at the mobile terminal, so that the digital signature cannot be realized directly by the mobile terminal. The invention provides a digital signature technology for the mobile terminal. The digital signature technology comprises the mobile terminal, a signature server and a KMC server cipher machine. The signature server is responsible for managing the signature private key of the user, all private keys of the system are encrypted and then saved in the cipher machine, the encrypted user' private key is mastered by the user, and the cipher machine is only communicated with the signature server. When a certificate is downloaded by a user, the terminal application packs a Hash value in digital signature and user identity information together to form digital signature request message, the digital signature request message is sent to the signature server through a short message, after the user request validation is passed, the cipher machine is called, and after the user' private key is digitally signed, the result is returned to the user to complete the digital signature process.

Reversed glenoid implants, and related kits and methods, are described that include an anchor member having a proximal head and a baseplate having a distal end with a first aperture sized to accept the proximal head of the anchor member. The proximal head is inserted along an un-threaded length thereof from the distal end into the first aperture, and the anchor member is restrained against axial translation with respect to the baseplate but is permitted to rotate with respect to the baseplate.

The invention discloses a voice frequency sleep assisting device based on brain wave signals. The device utilizes a digital signal processor (DSP) as the core to achieve real-time analysis of brain wave signals, pulses, eye movement, head movement and the like. The fact that a user is in the sleep state is defined according to a signal analyzing comprehensive result, and different voice frequencies in a voice frequency storage are selected according to the sleep degree to help the user to enter the sleep. After the user enters the sleep, the device enters the standby mode, and the voice frequencies are closed automatically. The device is good in sleep assisting effect and has good adaptability on a human body, a measurement sensor and an electrode are installed in a head belt which is bound to the forehead of the user and does not affect the sleep gesture of the user. The system is operated full automatically without any external adjusting command. The voice frequency output adopts a paster headset or a bone transfer module sensor which is arranged in the head belt or a pillow and is not arranged in the auditory meatus, and no long-term discomfort is generated.

The invention relates to the technical field of surface defect detecting of cold-rolled strip steel, and provides an online detecting method for surface defects of the cold-rolled strip steel. The method is characterized by comprising the following steps of: S1, irradiating the cold-rolled strip steel by using light and receiving an image reflected by the cold-rolled strip steel; S2, preprocessingthe image; S3, constructing a deep learning network for the surface defect detecting of the cold-rolled strip steel, extracting defect features of the defect image by utilizing the deep learning network for the surface defect detecting of the cold-rolled strip steel and identifying defect types of the defect features; and S4, determining the quality grade of the cold-rolled strip steel accordingto the defect types, the severity degree, the quantity of the defect features and the distribution situation of the detects. The online detecting method for the surface defects of the cold-rolled strip steel, which is provided by the invention, is capable of quickly identifying the essential defect types of the surface defects of the cold-rolled strip steel and is good in adaptability.

The invention relates to polycarboxylic efficient concrete water reducer for high-performance prefabricated parts and a synthesis method thereof. The polycarboxylic efficient concrete water reducer in a comb structure is characterized by being formed by using TPEG 2400 (methyl alkenyl polyoxyethylene ether), unsaturated crylic acid and activated monomer AMPS (2-acrylamide 2- methylpro panesulfonic acid), and using a redox system (hydrogen peroxide-VC (ascorbic acid)) for one-step mid-temperature aqueous free radical polymerization. The polycarboxylic efficient concrete water reducer is provided with active groups such as ether bonds, carboxylic acid groups, sulfonic acid groups, polyoxyethylene alkyl ethers and amide groups on long main chains and side chains. The product with 40% solid content has the effects of high water reducing rate, high early strength, low gas content, low chlorine, low alkali and no rusting to reinforcement steel bars. The product is prepared into the product with 20% solid content for use. After 1.0-1.2% of cementing material is added, the product has fine wrapping performance and water retentivity when slump is 30-50mm. The product can be used for concrete for high-performance prefabricated parts, such as C80 high-strength tubular piles and C60 prefabricated beams.

The invention discloses a description and evaluation method for spatial distribution of sand bodies, of a seismic attribute, in a clastic rock reservoir. The method comprises the following steps that 1) batten interpolation and encrypted sampling are carried out on post-stack seismic data to obtain encrypted sampled seismic data; 2) according to sensitive relations between the seismic attribute and lithology, pore permeability and petroliferous performance, a seismic attribute combination is optimized, and an integrated seismic attribute is obtained; 3) spatial distribution of dessert sand bodies is identified according to the integrated seismic attribute; and 4) spatial distribution of dessert sand bodies is combined, and a logging porosity and the petroliferous performance are calibrated to realize identification and integrated evaluation for sand bodies of the clastic rock reservoir. According to the method, features of the seismic attribute data calibrated by the logging data are considered in an integrated manner, technologies of logging data calibration, batten interpolation and encrypted sampling of seismic data, seismic attribute extraction and analysis on slicing zero points of the attribute are applied comprehensively, the thickness and physical parameters of the sand bodies of the seismic attribute are evaluated, and the prediction and evaluation precision of the sand bodies of the reservoir are improved.

A tool (10) is disclosed for fine machining of optically active surfaces (F), with a base body (12) that can be attached to a tool spindle of a machine tool, and an elastic membrane (14) that has a machining section (16) to which connects a gaiter section (18) by means of which the membrane is attached to the base body such that it can be rotated therewith. The base body and the membrane delimit a pressure medium chamber (20) which via a channel (22) can be optionally pressurized with a pressure medium in order to apply a machining pressure via the machining section during machining of the optically active surface. A guide element (24) guided longitudinally mobile on the base body is actively connected with the machining section so that the machining section can be moved in the longitudinal direction of the guide element and held in the transverse direction to the guide element, although under an elastic deformation of the gaiter section it is tilt-mobile in relation to the guide element. The result is a tool of simple design and reliable function which has an excellent adaptability to a wide range of geometries to be machined.

A penetration-crystallization type cement-base water-proof material for building is prepared from silicate cement, sodium methyl naphthalenesulfonate condensate, water silane emulsion, dodecahydrated aluminium potassium sulfate, magnesium hydroxide, calcium hydroxide, sodium silicate, bentone and quartz sand through proportional mixing. Its advantages are high penetrability and crystallinity, permanent water-proof effect, and self-repairing of fine cracking.

This invention relates to a small load trace and control device, whose circuit is to adopt SPI series connection between one main control single machine and one assistant single machine, wherein, the four series mouths are through RS-232 level conversion chip with one connected to electron panel and other three as outer series communication interfaces separately connecting one image process module, one wireless remote communication module and one load machine; there is also one angle sensor composed of three circuit single axis speed with output signals orderly through one high band filter and one low band wave as signal amplifier into main control single machine.

The invention discloses a staggered spoke type stretchable tool for friction stir welding. The staggered spoke type stretchable tool comprises a bearing, a bearing sleeve, a first supporting ring, a second supporting ring, a third supporting ring and a plurality of supporting plates, the bearing is used for connecting the spoke type tool with a cross-shaped operation machine type dislodgement machine, the bearing sleeve is rotationally arranged on the bearing in a sleeving manner, the first supporting ring is annular, an inner ring fixing sleeve is arranged on the bearing sleeve and can rotatealong with the bearing sleeve, the multiple first air cylinder assemblies are arranged on the outer ring of the first supporting ring and distributed on the outer side of the first supporting ring ina circumferential array equal-interval manner, the second supporting ring is annular, is concentric with the first supporting ring and is arranged on the outer side of the first supporting ring, a plurality of round holes are formed in the second supporting ring, air cylinders can penetrate the round holes, the supporting plates are arc-shaped plates, and the first air cylinder assemblies can bedetached to be far away from one end of the third supporting ring. The invention further discloses an adjusting method of the staggered spoke type stretchable tool for friction stir welding.

The invention discloses an ELF file release method, an ELF file verification method, a server and a terminal, and belongs to the technical field of the Internet. The server splices a first hash valueobtained by performing hash calculation on an ELF file with description information to obtain a spliced character string, encrypts the ELF file and the spliced character string to obtain signature information, generates a signature file and releases the signature file. As the released signature file is generated according to the whole ELF file, after obtaining the signature file released by the server, the terminal can verify the whole ELF file, so that the verification result is more accurate and is independent from the verification mode based on byte encryption and decryption, no matter thesystem of the terminal supports the byte encryption and decryption or not, the terminal can verify the ELF file, so that the adaptability is better. In addition, by means of the description information in the signature file, the terminal can also perform upgraded verification on the ELF file stored in a local memory, thereby enriching the verification contents.

The invention provides an electromagnetic safety analysis method for a near field of a plane phased control array antenna on a system platform, which analyses electromagnetic safety of personnel and equipment close to the plane phased control array antenna on the system platform by calculating the near field electromagnetic environment of phase control array antenna radiation. The near field of the plane phased control array antenna is obtained by overlaying a radiation field of each active (motivation) array element in a array; enabling a near field area of the plane array antenna to be a far field area relative to the array elements; obtaining the near field of the array antenna after overlaying and rectifying the radiation far fields and solving the radiation far field of each array element in the array; and diagnosing the electromagnetic safety of the personnel and the equipment which are located at the near field of the phase control array antenna on the system platform by comparing near field electric field data with an electric field limit value specified by a electromagnetic safety standard. Each step of the method is based on strict principles, and the strictness of the principles ensures accuracy of calculation results, so that the electromagnetic safety of the personnel and the equipment located in the antenna near field area can be accurately analyzed.

The invention relates to a control technology of a fused wire deposition molding 3D printing device and aims at providing a wire feeding speed control system and a wire feeding speed control method of an FDM rapid molding machine. The system comprises a pressure sensor arranged on an FDM printing nozzle; the pressure sensor and a pressure setting module are connected with a closed ring control module; the closed ring control module is sequentially connected with a motor control module and a wire feeding motor by a signal wire; and the wire feeding motor is connected with a friction wheel by transmission equipment. According to the system, a wire feeding speed is indirectly controlled according to the pressure of fused printing materials in a printing nozzle mold cavity, so that a wire feeding mount and a wire discharging amount are the same and the molding quality of fused wire deposition molding (FDM) is improved. The control on the wire feedings peed has better self-adaptability; and the influence on the wire feeding amount, caused by various interference factors of the outside, can be overcome through real-time online closed ring calculation control of the closed ring control module, so that the printing nozzle keeps a fixe wire discharging speed to print and the printing quality is improved.

The invention discloses an automatic adjustment system for automobile rearview mirrors. Two camcorder lenses are mounted on an inner rearview mirror, face to the head of a driver, and are used for detecting and extracting the orientation and the position of the head and the orientation and the position of the body of the driver; a corner sensor is mounted on a steering wheel and is used for detecting the rotating angle of the steering wheel so as to obtain the direction of automobile front wheels; a vehicle-mounted computer extracts out the orientation of the head of the driver, the three-dimensional space movement of the body of the driver, and the gazing direction of eyes of the driver through images shot by two independent optical image sensors, and through cradle heads, the directions of three rearview mirrors are adjusted so that the driver obtains the best view. According to the automatic adjustment system disclosed by the invention, the rearview mirrors can be automatically adjusted to provide the driver with the view of the most needed region, the disadvantages that a conventional rearview mirror system cannot be dynamically adjusted, view blind areas exist, and objective views are inconsistent with actual views are overcome, and the automatic adjustment system has enormous aids to the driving of the driver on roads.

The invention provides a three-dimensional curved surface measuring device and a method based on instant random illumination. The device comprises two digital cameras, a control circuit board, an instant random light field projection device, a computer and a calibration board. The computer controls the two cameras through the control circuit board to synchronically take a three-dimensional image pair without auxiliary light projection, then a projecting apparatus is immediately started to project a purely random image onto the surface of an object to be measured, and the two cameras synchronically re-take another three-dimensional image pair of the object to be measured under the irradiation of a random light field; the first three-dimensional image pair is used for synthesizing multi-angle measurement and generating textures of a three-dimensional model; according to the three-dimensional image pair of the measured object under the irradiation of the random light field (the second three-dimensional image pair), a weighted least square method is adopted with the constraints of geometry and grayscale to build sub-pixel correspondence among image points, and at the same time, a dense three-dimensional point cloud is acquired. The method is characterized by short measurement duration, simple structure, easy realization, and suitability for on-site measurement.

The invention discloses a six-wheel-leg movable operation robot test platform which comprises a robot body and six robot single leg structures. The six robot single leg structures are evenly installed on the robot body in the circumferential direction. Each single leg structure can be designed into two structures, one is a wheel-leg structure with a walking function and a wheel-traveling function, and the other is a leg-arm operation structure with a walking function and an operation function. The two single leg structures can be specifically selected according to different mission requirements. Meanwhile, the interior of the robot body is divided into a sensing layer, a driving layer, a control layer and a power layer by partition plates, the interior of the robot body is used for installing a control system, and motion control over a robot is achieved. The six-wheel-leg movable operation robot test platform has the advantages that the walking function and the wheel-traveling function are integrated, and the adaptability of the robot to the road environment is good; and the special operation legs are arranged, and different end effectors can be configured to meet different mission requirements.

The invention provides a similar picture identification method and a similar picture identification device, which are used for acquiring image signatures corresponding to content information of input images, performing Hash operation to the image signatures, querying table items corresponding to results of the Hash operation in a pre-stored Hash table and identifying images similar to the input images in candidate images corresponding to queried table items. The similar picture identification method and the similar picture identification device solve the fault tolerance problem existing in a pattern identification technology and can accurately identify required similar images.

The invention discloses a hand blender with a built-in 2-speed gearbox with its output shaft rotating clockwise whenever the motor rotates clockwise or anticlockwise, by means of a differential transmission assembly and a one-way bearing, two different output speeds are realized. Thus, different food can be processed with different stirring speeds, and single type of food can be processed with different stirring speed in different mixing stage of a stirring process.

A method for dispatching parallel transmission of stream media data includes setting a sending module on steam media server; setting a sending module and a receiving module separately on each node for receiving stream media data; defining parameters of rate of sending, packet size and number of sending, signal transmission time, time of data overtime and packet loss for father node on receiving module; sending command packet for distributing transmission task simultaneously to each father node according to their network property and their distribution ratio for holding maximum set distribution ratio while network stable transmission state is ensured .

The invention provides a dragging, translating and lowering device for dismantling a pier top beam section and a pier. The device comprises four supporting points, wherein each supporting point comprises four steel pipe piles, four steel pipe supporting frames, four transverse girders, four longitudinal translation beams, two longitudinal translation devices and two lifting and lowering systems; transverse translation beams can move in a transverse direction; the longitudinal translation devices are arranged at the upper parts of the transverse translation beams; the lifting and lowering systems are fixed on the longitudinal translation devices; the transverse translation beams are used for adjusting transverse positions of the lifting and lowering systems; the longitudinal translation devices are used for adjusting longitudinal positions of the lifting and lowering systems; and the lifting and lowering systems are used for lifting or lowering the pier top beam section and the pier. A dragging, translating and lowering method for dismantling the pier top beam section and the pier, provided by the invention, is capable of economically and efficiently solving a dismantling problem of a pier top box beam and pier structure under in the absence of the hoisting of a crane, suitable for dismantling the pier top beam section and the pier of a beam bridge or a bridge with a concrete girder and especially suitable for dismantling engineering for the pier top box beam and pier structure of a multi-span continuous beam bridge using a whole-span lowering dismantling technology.

The invention discloses a derrick arrangement of tools for replacing a steel arch bridge suspender and a replacing method of replacing the steel arch bridge suspender. The derrick arrangement of tools for replacing the steel arch bridge comprises limit devices arranged symmetrically on two sides of the suspender, steel wire ropes, an intermediate converting device, a steel strand and a pocket lifting device fixedly arranged below a crossbeam of the suspender. The limit devices comprises horizontal limit devices and vertical limit devices, wherein the horizontal limit devices are arranged on an arc face of the top portion of an arch ring, and the vertical limit devices are arranged at two sides of the arch ring. Rubber cushions are laid between the horizontal limit devices and the top face of the arch ring, and the steel wire ropes are wound on the arch ring and are fixed by the limit devices. Two ends of the steel wire ropes are connected with the intermediate converting device, the other end of the intermediate converting device is connected with the upper end of the steel strand, and the lower end of the steel strand is connected with the pocket lifting device. The bottom portion of the pocket lifting device is connected with a lifting jack used for tensioning the steel strand. The derrick arrangement of tools for replacing the steel arch bridge is used for the method of replacing the steel arch suspender. The derrick arrangement of tools for replacing the steel arch bridge and the method of replacing the steel arch bridge have the advantages of being good in applicability, simple in structure, convenient to operate, space-saving, safe, reliable and economical, and good in application prospects.

The invention relates to an object tracking system implementation method based on a Cortex system multi-core processor. The method includes the following steps: acquiring a video; programming to implement a target tracking algorithm based on SURF registration and KALMAN prediction; performing program porting cross operation systems; establishing an embedded system basic platform which is implemented by the target tracking algorithm; implementing cross-hardware porting of a PC terminal with the target tracking algorithm; and realizing the cooperative work between the ARM core and a DSP core inside a panda board. According to the invention, the system herein operates the target tracking algorithm on independent single-board device, which eliminates the reliance on the PC terminal of traditional image algorithm, realizes embedded image processing, makes the algorithm more flexible and expandable, and provides a much easier and more flexible interface for the follow up unmanned aerial plane tracking platform; and in a more complex moving background, can real-time and accurately tracking a moving object.

The invention relates to a mutually-cyclical solid fuel gasification device with double fluidized beds and a solid fuel gasification method. The method comprises the following steps: performing a pyrolysis gasification reaction between a solid fuel and a gas for fluidizations and reactions in a fluidized bed gasification reactor so as to generate a combustible gas, as well as solid coke and semicoke which are not subjected to incomplete pyrolysis gasification reaction, wherein the heat required by the pyrolysis reaction is obtained from high-temperature heat-carrying circulating bed materials; feeding the solid coke/the semicoke and the heat-carrying circulating bed materials with heat discharge into a pneumatic back-feeder through a cyclone separator or an overflow device according to a running state in the reactor; controllably sending the solid coke/the semicoke and the heat-carrying circulating bed materials into a combustion reactor; reheating the heat-carrying circulating bed materials due to the combustion of the solid coke/the semicoke in the combustion reactor; and refeeding the heated heat-carrying circulating bed materials into the gasification reactor through a back-feeding device so as to provide the heat for the pyrolysis gasification reaction. Thus, the device is gasified while the running parameters of the bubbling fluidization and the fast fluidization are adapted. As a result, the solid fuel gasification device provided by the invention has the good adaptability for various combustible solids; and the high running efficiency of the whole device is realized.

A cantilever retroversion-proof cushioning apparatus comprises: an actuating cylinder (10), the actuating cylinder (10) comprising a main cylinder body (20); a piston (21) dividing a piston cavity into a rod cavity (22) and a rod free cavity (23), a damping passageway (24) in communication with the two cavities being disposed between the rod cavity (22) and the rod free cavity (23); a piston rod (25); a damping control system (40), connected to the cantilever and the actuating cylinder (10), and calculating a current optimal cushioning force of cantilever retroversion according to impact parameter information; and a field generator, for changing field intensity in the actuating cylinder (10). The cantilever retroversion-proof cushioning apparatus can calculate the optimal cushioning force of the cushioning apparatus before the lifting beam overturns, and when the overturn occurs, adjust the cushioning force in real time through fast response of liquid capable of reversible phase change, and the precise control can satisfy cantilever retroversion cushioning processing under different working conditions.

The invention discloses a vibratory picking head for picking oil-tea camerallia fruits. The vibratory picking head as shown in Figure 1 described in the specification comprises an oscillating guide bar mechanism consisting of a crank (1), a sliding block (2) and a guide bar (3); the length of the crank of the mechanism is designed to be adjustable. The oscillating guide bar mechanism is installed inside a chuck (9) and driven by a hydraulic motor (4). The chuck is driven by a hydraulic cylinder (10) and suspended below a vibrating head rack (8); the vibrating head rack (8) is supported by two transverse beams (5) on a support plate (6); and four groups of isolation springs (7) are arranged between the vibrating head rack and the supporting plate. The vibratory picking head for picking oil-tea camerallia fruits, disclosed by the invention, has the advantages of good adaptability to picking environments, high picking efficiency, continuous picking actions and small loss to oil-tea camerallia trees and provides powerful technical support for research and popularization of oil-tea camerallia fruit picking machines.

The invention relates to a tungsten-containing waste treating method and device thereof. The method comprises the following steps: pelletizing tungsten-containing wastes to obtain granular tungsten-containing wastes; roasting the granular tungsten-containing wastes obtained in step 1 to obtain a roasted material; adding an additive into the hot roasted material obtained in step 2; and reacting through the afterheat after roasting to obtain a melt; and dipping the melt obtained in step 3 into water to obtain a solution and a solid. The device comprises a pelletizing device, a roasting device, adust collecting device, a water dipping tank, a conveying pump, a solid-liquid separation device, a concentrating device, a drying device and a packing device. The method is short in process and highin recovering rate; special limitation to the content of impurity elements in the tungsten-containing wastes is avoided; the raw material adaptability is high; and the method is a green and environmentally-friendly treatment method.

The invention belongs to the technical field of agricultural machinery and particularly relates to a smashed straw quantitative ditch-buried and returning-to-field device. A two-sided ditching plow of the device opens a straw burying ditch, a roller blind driving mechanism drives a roller blind (12) to be opened and fixes the positions of a spiral nut (10) and a connecting plate (11), the opened roller blind (12) blocks smashed straw (22) sent by a smashing mechanism in the front, the smashed straw (22) falls into a spiral conveying mechanism (7), a left spiral blade (702) and a right spiral blade (703) on a rotating shaft (701) convey the smashed straw from the two ends to the middle, and through a central hole of a spiral conveying casing (8), the smashed straw (22) blocked by the roller blind (12) is guided into the straw burying ditch through a straw guiding casing (14). The smashed straw returns to fields partially by burial and partially by earth surface covering, the quantitative adjustment of the proportion of the smashed straw returning to field by ditch burial is achieved, and the adaptability is good under the conditions of a large straw amount.

The invention discloses a method for solid-phase synthesis of a polycarboxylate water reducer by virtue of microwave assistance, belonging to the technical field of concrete admixtures in building materials. All the existing polycarboxylate water reducer synthesis processes need to be performed in a reaction medium that takes water as a solvent, the production time is 6-10 hours, only a water product of which the solid content is 20-45 percent is obtained, and the transportation cost is relatively high during use, so the invention provides a method for the solid-phase synthesis of the polycarboxylate water reducer by virtue of microwave assistance, the synthesis time is short, and a solid product can be directly obtained. Specifically the method comprises the steps: putting a pasty mixture consisting of a polyether monomer, an initiating agent, a small-molecular monomer, a reducing agent, a chain transfer agent and water of which the mass is 50% of the mass of the small-molecular monomer into a power-adjustable microwave oven, and reacting for a certain time to obtain a solid or pasty polycarboxylate water reducer. The method is wide in application range, and all the polyether type polycarboxylate water reducers in the current markets can be prepared by the method.

The invention relates to a method for using a one-phase photovoltaic grid-connected inverter to detect a network voltage phase. The method for using the one-phase photovoltaic grid-connected inverter to detect the network voltage phase is characterized by comprising the following steps of (1) carrying out filtering processing on collected network voltage signals, removing higher harmonic except direct-current components and fundamental frequencies through filtration, and obtaining a signal Valpha; (2) carrying out 90-degree phase shifting on the obtained signal Valpha, and generating a signal Vbeta, namely, generating a set of orthogonal signals; (3) carrying out d-q conversion on the obtained orthogonal signal Valpha and the obtained orthogonal signal Vbeta according to an estimation angle theta' of a power grid, and obtaining a Vd and a Vq, wherein the initial value of the estimation angle theta' of the power grid is set to be zero, the operation value can be updated through the step (4) and the step (5), and thus the estimation angle theta' can reach the real network voltage phase after the transient state process ends. The method for using the one-phase photovoltaic grid-connected inverter to detect the network voltage phase has the advantages that interference of the harmonic in the collected network voltage signals can be removed through filtration, signals, with the direct-current components, in the collected network voltage signals can be removed through filtration, and higher phase locking accuracy can be achieved.