169results about How to "Simple implementation steps" patented technology

The invention provides an InAs / GaSb superlattice infrared photoelectric detector and a manufacturing method thereof. The InAs / GaSb superlattice infrared photoelectric detector comprises a substrate, an epitaxy structure deposited on the substrate, an upper metal electrode formed above steps, a lower metal electrode formed under the steps and a passivation layer, wherein the epitaxy structure comprises an n-type doping buffer layer, an n-type electrode contact layer, a barrier layer, an intrinsic absorption layer, a p-type electrode contact layer and a cover layer, the steps are formed on two sides of the epitaxy structure through etching, the intrinsic absorption layer is composed of a plurality of periodical InAs / InSb / GaSb / InSb superlattice structures. In the InAs / GaSb superlattice infrared photoelectric detector, InSb is respectively inserted into two interfaces of each superlattice period of the intrinsic absorption layer to form strained superlattices, the stress between the superlattices and the substrate is effectively balanced, the material growing quality is improved, and accordingly the photoelectric performance of the detector is improved.

The invention discloses a full working stroke thermal error compensation method of a numerically-controlled machine tool feeding system and an implementation system thereof. Reduction of whole machine machining accuracy is mainly caused by thermal errors of the numerically-controlled machine tool feeding system, and a whole set of the technical scheme for measuring, analyzing and compensating the feeding system is provided. Application techniques of thermal error measurement, thermal key point identification, thermal error compensation modeling and thermal error on-line compensation of the numerically-controlled machine tool feeding system under typical working conditions are surveyed. On that basis, a thermal error on-line compensation system of the numerically-controlled machine tool feeding system is constructed. Taking an X-direction high-speed feeding system of a Longmen numerical control machining center in a certain model as an example, measurement, analysis and modeling compensation of the thermal errors are carried out respectively, and compensation effects are obvious. The full working stroke thermal error compensation method can be used for solving the thermal error compensation problem of the numerically-controlled machine tool feeding system and provides technical supports for machining accuracy and stability of a numerically-controlled machine tool.

The invention discloses a dynamic deviation estimation method based on the Gaussian average value movement registration and comprises the following steps: step one, an objective state is measured by a sensor in a multi-platform system; step two, a Gaussian density estimator of the method of Gaussian average value movement is constructed; step three, the objective state is estimated by an extended Kalman filter; step four, an estimation value of a measurement value of the objective state is computed; step five, an estimation value of the dynamic deviation of the sensor is computed; step six, the estimation value of the dynamic deviation is calibrated; step seven, the convergence judgment of the estimation value of the dynamic deviation is calibrated. By only using the measurement data of one target, the method of the invention quickly and accurately estimates the dynamic deviation of the sensor. The method is simple, effective and easy to implement, and can be widely used for various fields such as robots, intelligent transportation, aerial transportation supervision, space flights, aviation and sailing, etc.

The invention discloses a method and a device for automatically detecting and compensating the zero position deviation of a rotary transformer. After output analog signals of the rotary transformer are decoded by a signal decoding circuit of the rotary transformer, the output analog signals are sent to a microcontroller. Current of a motor phase winding is detected by a Hall current sensor, and after the current is adjusted, the current is sent to the microcontroller by an analog-digital conversion circuit. The average value of sent voltage signals is calculated by the microcontroller. According to the current phase current average value and the last zero position deviation compensation value of the rotary transformer, the direction is adjusted, and then the best zero position deviation compensation value of the rotary transformer is calculated; and meanwhile, motor control signals of the microcontroller are subjected to power amplification by a power driving circuit for driving a tested motor to normally run. According to the method and the device disclosed by the invention, zero position deviation detection implementation steps of the rotary transformer are obviously simplified, the difficulty for detecting the zero position deviation of the rotary transformer is reduced, and the automatic compensation to the zero position deviation of the rotary transformer is realized. The method and the device for automatically detecting and compensating zero position deviation of the rotary transformer also have the advantages of convenience in operation, powerful adaptability and low cost.

The invention discloses an automatic detection and compensation device and method for installation errors of a Hall position sensor of a motor. The device comprises a micro-controller module and a power supply module, wherein the input end of the micro-controller module is connected with a Hall signal conditioning circuit module and a motor winding current detection circuit module; the motor winding current detection circuit module is composed of a Hall current sensor, a current signal conditioning circuit module and an A / D (Analog-to-digital) conversion circuit module which are connected in sequence; the A / D conversion circuit module is connected with the input end of the micro-controller module; and the output end of the micro-controller module is connected with a motor driving circuit module. The method comprises the following steps of: step one, acquiring a reference current Iref; and step two, detecting and compensating the installation errora of the Hall position sensor of the motor to be detected. The device is simple in structure, novel and reasonable in design, convenient to operate, high in automation degree, high in detection efficiency, low in realization cost, high in practicability, good in use effect and convenient to popularize and use.

The invention discloses a decision-making method for an intelligent type dynamic route guidance system and a guidance unit. The method comprises the following steps: firstly, the turning rate of the road section to the downstream road section during the period p is obtained; secondly, the predicted guidance turning rate corresponding to all guidance information in a knowledge base is updated; thirdly, the traffic flow in different directions during the period of p plus1 is predicted to form proportion; fourthly, the optimum guidance information of the traffic flow in the different directions is withdrawn from the knowledge base; fifthly, according to the state of the road net of the guidance unit, the composition of the traffic flow and the corresponding optimum guidance information thereof are comprehensively considered, and the comprehensive guidance information for the guidance unit during the period of p plus 1 is obtained; and sixthly, the guidance period is updated, i.e. the P is equal to p plus 1, and the guidance information acts on the traffic flow through a VMS. The invention adopts the intelligent method to handle the guidance compliance rate, solves the problem that the influence range of the data (such as guidance compliance rate, guidance information, and the like) to the traffic flow is not easy to be obtained, and obtains better effect. The implementation steps are simpler, and a great amount of matrix operation in the transitional method is not cited. Therefore, the implementation is easy.

The invention provides an area array infrared camera quick scaling and heterogeneity calibrating method based on the variant integral time, which includes the following steps: electrifying an infrared area array camera imaging system, and then shielding an optical path by an anti-dazzling screen driven by a micro motor; generating 3 kinds of integral time T1, T2 and T3 by a timing sequence drive module, simultaneously collecting response data X1<n>(i,j), X2<n>(i,j) and X3<n>(i,j) of F (F is not smaller than 50) frames through an image acquisition module at different kinds of integral time, and calculating out the respective mean values: X1(i,j), X2(i,j) and X3(i,j), wherein n=1-50, and (i,j) is the pixel coordinate. The area array infrared camera quick scaling and heterogeneity calibrating method based on the variant integral time is simple in implementation process, does not depend on a black body and a temperature control device thereof, needs less integral time points, and the integration with an infrared imaging process hardware system is easy.

The invention discloses a preparation method of a high-toughness equal-hole polymer hollow fiber separating membrane. The preparation method comprises the following steps: dissolving a segmented copolymer and an additive or packing into a selective solvent which contains a segmented copolymer, so as to form a casting membrane solution, spinning the casting membrane solution to form hollow fibers, staying in air for appropriate time, and then immerging nascent fibers into a coagulating bath which contains a segmented copolymer, so as to solidify the nascent fibers to form the high-toughness equal-hole polymer hollow fiber separating membrane. According to the high-toughness equal-hole polymer hollow fiber membrane prepared by using the method, the ratio of the maximum hole diameter D to the minimum hole diameter d is less than 2.5, the breaking elongation is 5% to 1000%, and the tensile strength is 5MPa to 500MPa. The prepared high-toughness equal-hole polymer hollow fiber membrane has the relatively high separation accuracy and the relatively good processing and packaging performances.

The invention relates to an automotive wiring harness conduction detection method. A method for detecting the connection of a single circuit comprises the following steps of: setting voltages V1 and V2 as voltages of the two ends of an automotive wiring harness loop respectively, applying a standard voltage to V1 and performing logic comparison on the voltage V2 to obtain a voltage Vo; and judging the voltage Vo to obtain a judgment result indicating whether a wiring harness is qualified or not. The automotive wiring harness detection method for detecting and judging a multi-loop multi-endpoint circuit comprises the following steps of: when all the endpoints of an automotive wiring harness need to be judged, defining a sending end and a receiving end, identifying each circuit, sending a standard voltage signal at the sending end, receiving the signal at the receiving end, comparing received data with standard data and judging to obtain the on-off and wiring conditions of the whole wiring harness; displaying a test result graph on a liquid crystal display and providing a voice prompt; and after all circuits pass the test, printing a product qualified tag or outputting a signal to control an automatic tool to pop up the automotive wiring harness. The method has a reasonable design and obvious effect.

The invention discloses a casing head and annular sealing device tripping-in tool for deepwater well drilling, and an application method thereof. The tool comprises a mandrel. A suspension structure is in sealing connection with the upper portion of the outer wall of the mandrel through a torque transmission structure. One end of the mandrel penetrates a piston slidably. An communication valve structure is arranged between the inner wall of the torque transmission structure and the outer wall of the mandrel. The suspension structure comprises a suspension barrel. An elastic pin capable of rotating to hook or release an annular sealing device is arranged at the bottom of the outer wall of the suspension barrel. A rotating barrel is in sealed and fixed connection with the lower portion of the inner wall of the suspension barrel. The inner wall of the rotating barrel is connected to the outer wall of the piston through a thread. An open lock ring sleeves one end of the piston, and can radially extend to hook a casing head or radially contract to release the casing head. The casing head and annular sealing device tripping-in tool and the application method thereof have the advantages of capability of mounting the casing head and the annular sealing device at a benthonic underwater wellhead, few mounting and constructing step and low cost.

The invention discloses a coordination method for an intelligent type dynamic route guidance system and a guidance subarea. The method comprises the following steps: firstly, the same road junction guidance units in the guidance subarea are coordinated, the optimum guidance information is withdrawn from a knowledge base, and the saturatation degree of the road section of a connecting road junction is re-predicted; secondly, after the guidance information is added in, the states of the guidance units of the downstream relevant road junctions are readjusted from the most up-stream road junction in the guidance subarea according to the obtained saturatation degree (the step 1) of the road section of the connecting road junction by prediction; and thirdly, if the states of the guidance units for the downstream road junction are not changed, the coordination between the two road junctions is ended; otherwise, the states of the relevant guidance units for the downstream road junction are adjusted. The mutually independent guidance units in the guidance subarea are connected through the states of the guidance units under the intelligent type DRGS frame; and meanwhile, the influence of the traffic flow of the upstream guidance units as well as the traffic flow of other guidance units for the same road junction on the decision-making guidance units are reflected.

The invention discloses a tire and pavement contact pressure characteristic-based pavement skid resistance condition evaluation method. The tire and pavement contact pressure characteristic-based pavement skid resistance condition evaluation method comprises the following steps: 1. adopting at least two pressure induction films, placing the pressure induction films on a bottom surface of a tested automobile tire and between the tire and different pavements to be tested; 2. contacting the tire of the tested automobile to the pressure induction film in a dead weight manner; 3. taking out the pressure induction film; (4) scanning the pressure induction film to acquire the pressure intensity value of each tested point of each pressure induction film; (5) determining the area M having the pressure intensity value of 0-0.2MPa of the contact surface of each pressure induction film and the tire; (6) calculating P which is equal to M / the area of the contact surface of the pressure induction film and the tire respectively; and (7) comparing all P values and evaluating the pavement skid resistance of all pavements to be tested. According to the method, the pressure induction film is utilized for measuring the pressure distribution of the tire and the pavement, the pavement skid resistance condition can be evaluated and the evaluation result is accurate; and besides, according to the tire and pavement contact pressure characteristic-based pavement skid resistance condition evaluation method, the cost is low, the use is convenient and the popularization is easy.

The present invention discloses an intelligent video monitoring method based on a router. The method comprises the steps of using a shooting device to acquire the video data and transmit to the router; using the router to detect the received video data, determining whether the video data exists a privacy part, if yes, using the router to carry out the fuzzy processing operation on the detected privacy part in the video data; otherwise entering a step of using the router to propagate the video data to a network. The present invention also provides an intelligent router characterized by comprising an information obtaining module, a detection module, a fuzzy processing module and an information sending module. The detection module is connected with the information obtaining module and the fuzzy processing module separately, and the information sending module is connected with the detection module and the fuzzy processing module separately. The method and the intelligent router of the present invention are simple to implement, and can monitor just with the help of a local router, thereby saving the manpower resources, reducing the human participation degree of the network videos, and fundamentally controlling the bad videos to flow into the network.

The invention discloses a feature data mining and neural network-based tumor classification method. The method includes the following steps that: the man-made scoring data of the effective lesion features of a tumor ultrasonic image are selected as an original feature data set; a bi-clustering algorithm is adopted to acquire effective local diagnosis modes from the original training data set; features of higher levels are extracted according to the effective local diagnosis modes, so that new feature vectors are formed; with the new feature vectors adopted as the input of a neural network, training is carried out, so that an effective multi-class classifier can be obtained; and feature vectors are extracted from a test sample by using the same manner mentioned above, and the multi-class classifier which is obtained through training is utilized to classify the feature vectors, and the specific classification result of a tumor can be obtained. With the feature data mining and neural network-based tumor classification method adopted, the defect that a traditional computer-assisted method is limited to low-level image features can be eliminated; and higher-level effective features are mined from a large number of man-made scoring feature data sets, and the classifier which can identify many types of tumors can be obtained through training by using a popular neural network classification method.

The invention relates to a tunnel ground surface settlement monitoring device based on distributed optical fiber sensing and a monitoring method. The tunnel ground surface settlement monitoring device based on distributed optical fiber sensing comprises distributed optical fibers, a datum point arranged at the position 3-5 times of the tunnel hole diameter away from the horizontal distance of the tunnel axis and multiple monitoring points which are symmetrically distributed at equal intervals by taking the tunnel axis as an axis; the datum point and the monitoring points are each provided with an installation base, the distributed optical fibers are arranged in the installation bases of the datum point and the monitoring points and communicate the datum point with the monitoring points. The tunnel ground surface settlement monitoring device based on distributed optical fiber sensing and the monitoring method are simple in step, high in operability and lower in cost.

The invention relates to a method for tissue culture taking lotus reproduction and rooting into account and belongs to the technical field of plant tissue culture. The method comprises the steps of selecting full ripe seeds, taking mature embryos as explants, taking out the embryos after cleaning and sterilization, inoculating the embryos to a sterilized MS solid culture medium with the pH of 5.7 and perform cultivation in a culture room with temperature of 25+ / -2 DEG C, photoperiod of 16 / 8 hours and light intensity of 2400 lux. After the preliminary generation is cultivated for 4 weeks, aseptic seedlings with good growth conditions and free of browning are transferred into a reproduction culture medium to be cultivated, the MS culture medium is taken as a base culture medium by the reproduction culture medium, 6-BA with concentration of 0.3-3 mg / L, NAA with concentration of 0.3-1 mg / L, sucrose with concentration of 30 g / L and agar of 0.3% are added, and the pH value is 5.7. According to the method, roots are induced while bud reproduction can be performed quickly in the reproduction and cultivation process, so that a large amount of lotus tissue culture seedlings are obtained, the time for expanding propagation is shortened, and the cost is reduced.

The invention discloses a synthetic method of a polystyrene block copolymer for an ultramicro filter membrane. The method comprises the following steps: mixing a first monomer, an initiator, a chain transfer agent and a solvent A to form a homogeneous solution, polymerizing in an inert atmosphere for a certain time, adding styrene and a second monomer, continuously polymerizing for a proper time, and settling a polymer solution to obtain the polystyrene block copolymer. The prepared block copolymer has the molecular weight of 5,000-750,000g / mol and the polydispersity index of 1.05-1.55, and can be used for preparing a homopore membrane, a nanofiber membrane, a self-repair ultramicro filter membrane and a composite membrane material.

The invention relates to a method of establishing an efficient regeneration system of shoot tips of dendrocalamus hamiltonii. The method comprises the following five steps: S1, induced culture of a lateral bud callus; S2, subculture of the callus; S3, differentiation culture of a seedling; S4, rooting culture of the seedling; and S5, hardening-seedling and transplanting of a regenerated plant. The invention relates to a plant tissue culture method which takes the shoot tip of the lateral bud of the dendrocalamus hamiltonii as an explant and is a beneficial attempt of obtaining the inductivity of an efficient embryonic callus obtained through tissue culture by taking the lateral bud of the bamboo as the explant. By adopting the method, the callus can be efficiently induced from the explant to establish an efficient somatic cell regeneration system, thereby creating beneficial conditions for genetic transformation and cell engineering research of the dendrocalamus hamiltonii and laying a good foundation for breeding by mean of the transgenic technology. The method is simple and feasible, beneficial to popularize, loose in implementing condition and remarkable in effect.

The invention discloses a reactive power measurement method based on a finite impulse response (FIR) digital filter, which mainly comprises the following steps of: sampling data of real-time voltage and current of a live wire; providing transient main frequency and current sampling frequency; correcting phases of a voltage signal and a current signal during calculating reactive power by using an FIR digital filter algorithm, wherein parameters of the FIR digital filer is made into a table in advance and is stored in algorithm sub-modules; acquiring relevant parameters by searching the table during actual correction; and finally calculating to obtain a reactive power value. Compared with the traditional reactive power calculation method, the method has the advantages that measurement precision is improved, implementation stage is simplified, construction cost is low, electric energy metering accuracy is obviously improved, and actual effect is outstanding.

The invention discloses a VLAN (Virtual Local Area Network) distribution method for different terminal services, belonging to the field of communication; the method comprises the following steps: (1) in a PON (Passive Optical Network) plus EOC (Ethernet Over Cable) / LAN (Local Area Network) environment, starting a QinQ at a PON port of an OLT (Optical Line Terminal) device and ending the QinQ at the port of a BRAS (Broadband Remote Access Server), namely deploying an internal layer VLAN below the PON of the OLT, simultaneously arranging an external layer VLAN at the PON, and transparently passing the external layer VLAN above the PON; (2) from the OLT to a network end-point, deploying a service VLAN; (3) planning continuous thirty internal layer VLANs for one building node; and (4) planning one service VLAN for continuous eight building nodes. By combining with technological methods such as QinQ and the like in VLAN planning to carry out reasonable extension on VLAN resources to meet use requirements of the services: through taking the external layer VLAN of the QinQ as a sub-front end identifier or an access device identifier for planning and taking the internal layer VLAN as a user or service identifier for planning, the problems of conflict, waste and the like of resource use occurred in a bidirectional access network are effectively solved, and the requirements on precise recognition and safety isolation of the services are realized. According to the VLAN distribution method for the different terminal services disclosed by the invention, the implementation steps are simple, so the method is easy for promotion and use.

The invention discloses a device and method for measuring solid surface free energy in an adsorption way. The object lies in that the surface energy of a test aggregate and other solids can be directly tested, and the evaluation on the water damage performance of an asphalt mixture can be rapidly and effectively completed. The method comprises the following steps: (1) placing a prepared sample in a vacuum chamber; (2) releasing probe steam into the vacuum chamber, maintaining the vacuum chamber at a constant temperature, measuring the probe steam adsorption amount on the surface of the sample, measuring the probe steam pressure, and establishing an isotherm of the probe steam adsorption amount and relative steam pressure relation; (3) introducing the probe steam into the vacuum chamber until the steam reaches the saturated steam pressure, calculating the dispersion pressure of the probe steam under the saturated steam pressure, calculating the specific surface area of the sample by utilizing the addition amount of the probe steam pressure and the adsorption steam amount; (4) obtaining a linear equation by utilizing the dispersion pressure of the probe steam under the saturated steam pressure and the known surface free energy of the probe steam, and acquiring the surface free energy of the sample.

The invention relates to a method for overcoming a vitrification phenomenon of sisal hemp tissue culture seedlings. The method comprises the following steps of under an in vitro condition, after utilizing stem tips of sisal hemp to perform surface disinfection for explants, inoculating the explants to an improved SH culture medium which is added with 6-BA to perform primary culture for about 45 days, and then inoculating the aseptic explants to the improved SH culture medium which includes 6-BA to perform induced differentiation and culturing, performing subculture multiplication for the induced cluster bud in each 45-day by utilizing the culture medium with the same induced differentiation, so that a large amount of healthy seedlings can be obtained through rooting culture. The method can be used for controlling the vitrification phenomenon of the tissue culture seedlings by adjusting the effective components of the culture medium, thus, the method is simple, convenient, economic andhighly efficient; producing the tissue culture seedlings by the common sisal hemp using the method can effectively overcome the vitrification phenomenon, therefore, the method has a wide application prospect.

The invention discloses a river vegetation group wake zone length measurement method. A fluorescence tracer is utilized to trace motion locus of vegetation group wake whirlpools, and motion process videos of the vegetation group wake whirlpools are acquired; a Matlab program and a video processing code are utilized to convert chroma of the fluorescence tracer into a corresponding value, and standard deviation of the fluorescence tracer chroma and a current direction standard deviation trend line are calculated; the position of a vegetation group tail end and a riverbed mark point in standard deviation distribution are determined according to the standard deviation trend line; length Lvv of a wake zone generated by vertical whirlpools is calculated according to a formula Lvv=(L1+L2) / 2+ / -(L2-L1) / 2; length Lkv of a wake zone generated by horizontal whirlpools is calculated according to a formula Lkv=(L3+L4) / 2+ / -(L4-L3) / 2; length of a wake zone of a submerged vegetation group is Lw=min(Lvv, Lkv), and length of a wake zone of a non-submerged vegetation group is Lw=Lkv. The method is advantaged in that the method is simple, length of the wake zone of the submerged or non-submerged vegetation group can be rapidly and accurately measured.

The invention provides a detection method for an initial position of a rotor in a static state of a PMSM. A voltage vector is injected along the direction of a random phase of stator, and proper voltage pulse injection time is determined; a pair of basic space voltage vectors in positive and negative directions is injected to the PMSM in the static state along the direction of each of three phasesof stators, and a three-phase current value of the PMSM is detected and recorded the moment that a pulse effect of each basic space voltage vector ends; and current values, obtained by sampling, of each phase are accumulated algebraically, and an angle of the initial position of the rotor of the PMSM is calculated according to a formula. The method does not needs a lot of data operation, a realization algorithm is simple, steps are simple, realization is easy, and the engineering practicality is higher; the method is not limited by the saliency of the rotor, and can be widely applied to surface-mounted and embedded PMSMs.

The embodiment of the invention discloses a digital health self-adjusting system. The system comprises a body detection device and an information server, wherein the body detection device is used for detecting the body health index of a user and comprises a monitor, a main control module, an alarm device, a radio signal emitter and a display screen; and the information server is connected with the body detection device and used for performing data transmission, has data processing capability, receives and processes information transmitted by a monitoring device and feeds a data analysis result and a recommended body-building video tutorial and reasonable diet information back to the user. The system is implemented, so that great convenience is brought to the user, physical examination can be performed indoors at any time and a large amount of time and money is saved.

The present invention relates to a method for leaving household convenient message by TV, including a television signal receiving system and a television remote control circuit. The method includes steps of: (1) providing a recording processing module composed by a microphone, an auto-gain circuit and an A / D conversion circuit, wherein, the recording processing module is connected to an audio processing module and a timing module provided in the prior system; (2) using the memory space, namely flash memory medium, of the prior system to store the sampled audio information; (3) combining the self-bonding timing function of the system, to book to listen to voice messages; (4) providing quick-speed recording and quick-speed broadcasting shortcut keys on a remote control circuit including a remote controller; triggering the recording function by one key, and the sampling module starting working after triggering; and pressing a key to listen to the speech information. The present invention realizes the household speech mailbox function by adding a sound recording processing module of the television; and provides a time booking speech prompt through a timer, so as to provide great convenience for the TV users.

The embodiment of the invention discloses a digital television system, which comprises a digital television, a domestic gateway control terminal and a moveable control terminal. The domestic gateway control terminal comprises a theme control module, a sound effect control module, a database module, an intelligent downloading module and a message feedback module. The embodiment of the invention discloses a method for switching theme mode in digital television. Through the method of the invention, an individual setting button can be added in a remote controller. The method of the invention is realized by modifying procedure, has simple implement steps, can bring convenience to user and can take great benefit to the merchant.

The invention discloses a 3D memory device and a manufacturing method thereof. The 3D memory device includes a substrate, a gate stack structure, a plurality of channel columns and a plurality of channel holes, a doped region, a first conductive layer and a core part, wherein the gate stack structure is positioned above the substrate and comprises a plurality of gate conductors and a plurality ofinterlayer insulating layers which are alternately stacked; the plurality of channel columns and the plurality of channel holes penetrate through the gate stack structure; the doped region is locatedat the bottom of the channel hole and is formed in the substrate; the first conductive layer covers the inner wall of the channel hole and is in contact with the doped region; and the core part is located in the channel hole and above the doped region, the core part is doped polycrystalline silicon doped with impurity atoms with a certain concentration, and the doping concentration of the impurity atoms is adjusted so as to realize continuous adjustment of the surface warping degree of the 3D memory device. The warping degree of a wafer in an X direction or a Y direction is continuously adjusted by changing the doping concentration of impurity atoms doped in the core part in a grid line gap of the 3D storage device, and the problem of wafer warping is solved.

The invention relates to an intelligent television channel switching method with high efficiency. A television signal reception system comprises an antenna, a tuner, a saw filter, a medium frequency processing chip, a base band video processing chip, a display control chip, a microprocessor, a memory, an OSD generator, a display screen, an ADC converter and a power supply processing module which are connected together. The implementation step is as follows: when the system is started for the first time, the space of a nonvolatile store is allocated so as to deposit a common watched channel list and is divided into two channels: one channel counts the time of switching channels of the user and the watching time of every channel when one channel meets a common switching operation of the user, ranks the common watched channel list; whether the list is updated or not is decided; if yes, the list is updated, and a station caption sectional drawing is established; if not, an appointed channel is switched to; the other channel displays the common watched channel list when the other channel meets a common watched channel key of the user; the user selects by top and bottom, right and left, and then updates the list and establishes a station caption sectional drawing. The step of the method is easy, thus effectively solving the difficult problem of switching television programs frequently.