38 results about "Zero Defects" patented technology

The invention discloses a self-adapting special interference suppressing technology aim at phased array radar. The conventional phased array radar can suppress the noise to inhibit the interference by self-adapting, firstly the interference data received by the radar receiver can be learned then to form a zero point on the interference direction. The zero point depth and width generated by the conventional processing method all can be influenced by the array error and are not suitable for the special interferences, such as the dense cheating interference, the movement interference, the fast transforming clearance type interference or the composite interference and so on complicated interference forms. Adopting the ultra-lower secondary lobe aerial is the most effective anti-interference method, but under the present technology and technological level, the over-high secondary lobe requirement for the phased array aerial is impractical. The invention can implement the estimations of the interference source number and the orientation by the space spectrum estimating technology firstly, and then can construct the interfering data covariance matrix by using the analog signals, then can obtain the self-adapting minor lobe cancellation weight vector calculated by the self-adapting method, thereby forming the wide zero point and deep zero defect self-adapting directional diagram to inhibit the complicated interferences. The technology of the invention can be used for the signal processing system of the phased array radar, the implementing is simple, and the invention has wide practical application prospects.

The invention discloses a method for detecting heat sealing defects of an external packaging transparent film. The heat sealing defects are detected through a non-contact digital image processing technology. The heat sealing face of the external packaging transparent film is converted to digital image information through a CCD camera; the image information is input to a computer for preprocessing; size adjustment and gray-scale processing are carried out, and a median filter is adopted for denoising; preprocessed images are segmented, a zero-defect original image serves as a tool image to carry out deduction operation on the segmented images, and a background image is removed; edge detection is carried out on defect characteristics in the images through a Roberts operator; an image defective region is marked through a BWlabel algorithm, and the number and area of the defect characteristics are counted through a Regionprops algorithm. The number and area of the defect characteristics extracted out according to image analysis are compared with the qualification standard, so that the effect of detecting the defects of the external packaging transparent film is achieved. The heat sealing defects of the external packaging transparent film are detected through a computer processing technology, and the method can be applied to a packaging production line for automatic detection.

The utility model relates to a non-destructive examination method for the magnetostriction guided wave, which belongs to the technical field of non-destructive examination; wherein, a group of signals are extracted respectively from the zero defects signals of standard samples and the actual detection signals as reference signals and detection signals according to definite length and starting point of the data. The method one is that: a group of signals are acquired via the difference between the detection signals and the reference signals; defects are detected by judging whether the signals are deformed or not; the loss amounts of the section surface of tested members are measured by using the peak-to-peak value of the signals according to the linear relationship between the peak-to-peak value of the defect signals and the loss amounts of the section surface of the tested members. The method two is that: a group of signals are acquired via the difference between the square of the detection signals and the reference signals; defects are examined by judging whether the signals are deformed or not. The originally indistinguishable signals of small defects are processed into signals with easily distinguishable defects through the signal processing method, thus realizing the examination of minor defects defying examination and greatly enhancing the precision of measurement.

The invention discloses a zero-defect construction method for a secondary lining of a tunnel. The method comprises the following steps: S1, controlling smooth blasting quality; S2, detecting and controlling a primary lining section; S3, performing under-excavation treatment on the primary lining section; S4, hanging a waterproof board; S5, feeding window by window, vibrating layer by layer and grouting plate by plate, wherein no less than two punching holes are punched for concrete grouting of secondary lining and a two-vibration mode is adopted in which an insertion vibrator acts mainly and an adhesion type vibrator acts auxiliary for a side wall part while the adhesion type vibrator acts mainly and the insertion vibrator acts auxiliary for an arch part so as to implement concrete grouting of secondary lining; S6, performing mold grouting 2 hours after the completion of concrete grouting of second lining; S7, after mold grouting is completed, performing pipe maintenance and implementing non-destructive detection of secondary lining concrete at the same time. The invention prevents defects such as insufficient thickness and void in tunnel lining construction, guides the whole process of tunnel quality defect treatment, and ensures zero defect of lining quality.

The invention discloses a die-casting forming method free from shrinkage cavity and shrinkage porosity defects for a thick wall die-casting fitting. By the adoption of the method, the problems of shrinkage cavity, shrinkage porosity and air hole defects which are likely to happen to a thick wall aluminum alloy die-casting fitting frequently can be solved effectively. The die-casting forming method includes the main contents that a specific pouring method with the low superheat degree is adopted, large fullness pouring with the pressure chamber fullness being 60%-70% is used, the high-pressure mold filling die-casting technique is utilized, and the internal compactness zero-defect performance of the die-casting fitting is achieved. The local pressurization structure is added in mold design, and pressurization feeding at the thick wall position far away from the position of an inner casting gate is realized. By the adoption of the method, the casting defects of the thick wall die-casting fitting can be reduced, the rejection rate of products is lowered, material wasting is avoided, cost is reduced and benefits are increased.

The invention relates to a power transmission line grounding construction method, and the method comprises the following steps: S1, digging a grounding groove; S2, laying a grounding device; S3, connecting the grounding device; S4, refilling the grounding groove; S5, measuring grounding resistance. The beneficial effects of the invention are that the method can meet the requirements of excellent standards of national construction inspection rules and quality evaluation standard rules, guarantees the zero-defect hand-over of an electric pole construction project, and avoids severe construction quality accidents and quality management accidents.

The invention provides a demolding mechanism and injection mold for a cup handle. The demolding mechanism and injection mold comprises a mold base structure assembly, a forming assembly, an upper internal core-pulling mechanism assembly, a side core-pulling demolding mechanism assembly, a lower internal pulling mechanism assembly and a primary parting control assembly, wherein the mold adopts two times of parting mold opening; the mold adopts the layout of one cavity per mold; a pouring system adopts a cold runner injection molding mode. With adoption of the technical scheme, the mold overcomes the defects that a mold design mechanism has design difficulty, the actual processing and manufacturing difficulties are large, sufficient filling cannot be guaranteed by the forming and pouring modes, the forming quality is affected by more flash of products and the like in a molding and injection molding process of cup handle products, zero-defect automatic molding production of the products is realized with simple mechanisms, the product forming quality is guaranteed effectively, and the mold is reasonable in structural design, compact in structure, stable in work, safe and reliable.

The invention discloses a safety information management system and method of construction equipment of a nuclear power plant. The system comprises an information platform used for storing basic data and equipment maintenance information of the construction equipment, a quick response code module arranged on the construction equipment and used for generating a quick response code corresponding to the construction equipment according to the construction equipment, and a reading input device used for scanning the quick response code and sending a request access signal to the information platform;the information platform receives the request access signal, sends the basic data and the equipment maintenance information of the construction equipment to the reading input device, determines whether the reading input device has an information input permission, and opens an information input port and sends an information input signal if the reading input device has the information input permission; and the reading input device receives the information input signal and updates the equipment maintenance information into the information platform. According to the system and method, the informationization of safety management of the construction equipment of nuclear power engineering is realized, and the achievement of goals of zero damage and zero defect of equipment management can be ensured.

The invention discloses a method and a device for linear pre-coding of a communication system. The method comprises the following steps of: setting an initial value of a receiving beam forming matrix RBFM of the current sub-carries according to channel characteristics of sub-carries which are related to a current sub-carrier of ith user equipment; determining an equivalent combined channel compensation matrix of the ith user equipment in pth iteration of the current sub-carrier according to the RBFM of the ith user equipment in (p-1)th iteration, wherein the p is a natural number; obtaining a right singular vector set of a left zero defect space of the equivalent combined channel compensation matrix and setting the right singular vector set into a transmitting beam forming matrix TBFM of the ith user equipment in the pth iteration; and setting the TBFM of the ith user equipment into a pre-coding matrix Fi of the ith user equipment according to a convergence rule. According to the method and the device disclosed by the embodiment of the invention, a pre-coding matrix can be rapidly and simply obtained, the throughput rate of the system can be increased and the system performance can be improved.

A method and system for performing fault tolerant static timing analysis for an electronic network. A composite timing graph is generated by making K+1 copies of the zero-defect timing graph of the network, where K is a predetermined maximum number of defects present on a path of the network, and static timing analysis is performed on the composite timing graph.

The invention relates to a hot rolling wire rod production method for improving the surface quality. The steps include billet preparation, heating processing, pass rolling, reducing and sizing, coil collecting and finishing. Rough rolling, intermediate rolling and pre-finish-rolling are included, the step pitch is increased during the heating processing, the box pass is adopted for billets firstly, exchange in the ellipse pass and the circle pass is then achieved, and the square billets are rolled into semi-finished products with circular fracture surfaces; the box pass, ellipse pass and circle pass combined pass is adopted for the rough rolling, the square billets are compressed under large pressure, the box pass is adopted for the first three passes of the rough rolling, box type hole base angles are increased, the ellipse pass and the circle pass are adopted for the fourth pass and the fifth pass of the rough rolling, and the circular shape is achieved after the rough rolling; and induction heating is added between the rough rolling and the intermediate rolling, and the problem that the head and tail temperature difference of red steel heads is large is solved. A spiral guide pipe is added to a lifting spiral pipe structure for the coil collecting, the circle shape of tail portions is regularized through the spiral guide pipe after the tail portions lose tension during the coil collecting, and therefore the circle shape of the tail portions is controlled and the problem that the tail portions are scratched is solved. The hot rolling wire rod production method meets the zero defect quality requirement.

The invention discloses a method for no-reference quantitative inspection of panel thinning defect based on Lamb wave. The method comprises the following steps: solving a coefficient of the required Lamb wave reflection modal; solving a green function in a zero-defect panel; constructing a boundary integral equation by use of the dynamics reciprocal theory and far-field basic solution; substituting a reflection coefficient into the boundary integral equation and performing inverse Fourier transform to finally obtain a defect expression; and reconstructing the defect position and shape in the panel. In the invention, the problems of quantitative inspection of panel thinning defect are effectively solved, the panel defect is reconstructed by directly using the reflection information of Lamb wave without referring to any condition in advance, and an efficient and accurate method is provided for engineering quantitative detection.

The invention provides a PET membrane punching mold forming by IMR and a using method thereof. The problems that edge trimming is difficult to achieve automatic production for the control board products needing to adopt the IMR forming process technology, burrs are more, edge deformation and the like are even caused after edge trimming are solved. The novel membrane punching mold is designed, a membrane positioning mechanism, a membrane exhaust mechanism and an edge pressing device are additionally arranged in the mold, so that the phenomenon that the burrs are more and the membrane is deformed after punching when the membrane is punched in the IMR process is eliminated, so that the zero-defect automatic production of products is realized, the product forming quality is effectively guaranteed, the mold structure design is novel, and the mold has relatively good production and application values.

The invention relates to a manual and automatic integrated wire calibrating system and method of electrical equipment. Wire calibration is conducted by combining light, current and resistance as wellas information technologies, so that accuracy degree and credibility of wire calibration are improved, on-site use is facilitated, heavy wire calibration and cost burdens are reduced for workers, andfoundation is laid for zero-defect commissioning of the subsequent electrical equipment. The system comprises a first wire calibration module and a second wire calibration module which are the same; the positive or negative polarity output port of the first wire calibration module is connected to a to-be-calibrated wire on the same side of the electrical equipment; the rest other polarity output port of the first wire calibration module is connected with a ground wire; the second wire calibration module selects the opposite polarity output port connected with the first wire calibration moduleand the to-be-calibrated wire to be connected to the opposite side of the to-be-calibrated wire of the electrical equipment; the rest other polarity output port of the second wire calibration module is connected with the ground wire; the first wire calibration module and the second wire calibration module perform instruction and signal transmission as well as information sharing through the own wireless transmission modules and crossly judge the correctness and the integrity of the to-be-calibrated wire of the electrical equipment.

Embodiments of the present invention provide a comprehensive system that integrates automatically gauging and correcting stations operating in a machine environment with a universal machine monitoring for detecting defective articles, quarantining the defective articles, ensuring the defective articles are safely quarantined, analyzing the machine and article related data for providing contextual information for the defective articles produced, predicting one or more necessary actions to be taken for minimizing defects in future and achieving near zero defect quality in machine production. The comprehensive system provides such contextual information about the defects/faults in the article or the machine operations in real time and locally and remotely to any human resource.

The invention relates to a compensation method of a modular radiator manufacturing process. The compensation method comprises the following steps: first, sawing an extruded section composed of a single heat storage substrate 1 and a fin 2, and then carrying out sorting and stacking before pressure closing; carrying out primary pressure closing on a plurality of the extruded sections composed of the single heat storage substrate 1 and the fin 2 to generate 2% compressive deformation; carrying out artificial aging treatment on a radiator module obtained from the primary pressure closing at the temperature of 175+/-5 DEG C for 8 hours; then carrying out secondary pressure closing on the radiator module subjected to aging hardening to generate a 1% secondary compressive deformation and obtaina modular radiator; and finally entering a digital control processing center to obtain a finished product. In the invention, on the basis of maintaining a 'modular radiator manufacturing method', thebonding strength level of the 'inner boundary' of the substrate of the radiator is further improved through using a secondary pressure closing process compensation method, thus being capable of obtaining crack defects on the surface of the substrate of the radiator and dye penetrant nondestructive detection zero-defect results.

A method for detecting atypical electronic components for the quality control of a set of n electronic components at the end of the manufacturing process, the components being subject to a number p of unit tests providing digital data, this set of n components consisting of electronic components whose response to each of the p unit tests is contained within pre-defined limits specific to each of the p tests, uses the multidimensional information of the p dimension responses of these n electronic components. The method uses a generalized principal component analysis for detecting atypical items in the semiconductor field, or in fields including modules assembled using electronic components (e.g. an ABS module, a smart card, etc.). The aim of the method is to get close to “zero defect”, in which no parts are detected as non-compliant by the client.

The invention discloses a navigation method for installation of prefabricated components of a prefabricated building. The method comprises the following steps: information in RFID tag is transmitted to BIM-RFID system for judgment and processing, and a construction sequence, ca omponent transportation sequence, ta ransportation train number, transportation routes and like are pl are reasonably arranged;, and implementation of zero-defect and zero-inventory idealized targets in lean construction is facilitated. Meanwhile, relevant information such as the actual progress of the construction sitecan also be fed back to a prefabricated part production factory in real time; and the factory adjusts the component production plan according to the fed-back construction site progress information, so that the probability of waiting for work and waiting for materials is almost zero, then the factory transmits the information of the adjustment plan to the construction site, information sharing isachieved, and smooth proceeding of engineering is facilitated.

The invention provides a zero-defect test method for numerically-controlled machine tool processing. A panel of a machine tool is detected before processing according to ideal parameters of the panelof the machine tool. The method comprises the specific following steps that step 1, a sample piece is trial-manufactured and traditionally detected to determine ideal parameters of the panel of the machine tool; step 2, the ideal parameters are determined and recorded, the panel is detected before part processing each time, and ideal parameters, required by corresponding parts, according with panel parameters are determined. According to the zero-defect test method, the detection link is brought in front of finished product processing, whether or not the panel parameters of the numerically-controlled machine tool meet the requirement is tested before processing, so that the aims of greatly lowering the rejection rate and increasing the finished product rate are achieved, the processing cost of a factory is lowered, the production efficiency is improved, and zero-defect processing is achieved.