581results about How to "Resolution cycle" patented technology

The invention relates to the field of tunnel engineering construction, in particular to a control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections. According to the control method, problems in the existing methods that managing circle is long, reinforcing range and effect are bad, secondary geological disasters are triggered easily because of deformation and cracking of exceeding clearance limit of preliminary bracing and the like are solved. The method includes the following steps: searching and analyzing factors leading to collapse and disaster degree, stabilizing exposed face of an accumulation body and dewatering and decompressing deep parts, strengthening supporting intensity in the collapse sections and influencing areas, outburst prevention filling and strengthening the collapse accumulation body, grouting reinforcing asymmetrical peripheral curtains, confirming an excavating method in grouting reinforcing collapse sections and primary supporting patterns, replenishing grouting in parts, excavating inverted arches, and constructing second liners. The control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections has the advantages that collapse disposing construction period of water-rich very-broken surrounding rock tunnels is shortened, reinforcing range and intensity of the surrounding rocks are guaranteed, grouting reinforcement is fully conducted on the surrounding rocks in direct collapse areas, deformation in the preliminary bracing is relieved, occurrence of the exceeding clearance limit and the secondary geological disasters is avoided, disposing quality of collapse accidents is improved effectively, and good social benefit and economical benefit are created.

The invention provides an electrolytic machining method for a thin-wall machine case of an aero-engine, belonging to the technical field of electrolytic machining. The electrolytic machining method mainly aims at the machining of a surface concave-convex structure of a complicated thin-wall rotary body part in the aviation field, and is characterized in that a tool cathode is of a thin-wall strip-shaped structure or a rigid rotary body structure; window or lug boss structures with different shapes are distributed on the surface of the cathode. In a machining process, a workpiece anode automatically rotates and the tool cathode is fed to the anode in a peripheral movement process. In the whole machining process, electrodes do not need to be replaced, and the surface concave-convex structure of the thin-wall rotary body part is machined and molded once through rolling sleeve electrolytic action of a cathode window.

The invention discloses a numerically-controlled processing method of a nozzle housing piece. According to the method, a numerically-controlled machining / milling combined processing center is adopted and comprises two main shafts and an on-line measurement device; the workblank of the nozzle housing piece is a die-forged part, and the die-forged part is made of a nickel-based high-temperature alloy. The method comprises the following steps: designing a nozzle housing processing path; performing polishing treatment on the die-forged part to remove burrs from the die-parting face and end-face die-drawing taper; coarsely machining the tail part of the work piece; performing numerically-controlled machining / milling on the whole work piece; performing numerically-controlled fine machining of the head part of the work piece; cleaning and marking the work piece; and inspecting. The method provides the reasonable designs of processing path and processing method of the work piece as well as the processing positioning reference of the work piece, and completes the processing of the inner cavity, the outer circle, the lateral adapter, the positioning pin and other parts of the nozzle housing piece within one-step loading process. The method solves the problem that the die-forged part has a complex structure and a thin wall and has strict requirements for dimensional precision and positional precision; and overcomes the defects of long processing period, low production efficiency and poor dimensional precision and positional precision.

The invention discloses a method for pig CMAH gene specific knockout through CRISPR-Cas9 and sgRNA for specially targeting a CMAH gene. A target sequence of the sgRNA for specially targeting the CMAH gene on the CMAH gene meets a 5'-N(20)NGG-3' sequence arrangement rule, wherein the N(20) represents 20 continuous bases, and each N represents A, T, C or G; the target sequence on the CMAH gene locates at a 5-exon coding area or a junction position of adjacent introns of an N end of the CMAH gene; and the target sequence on the CMAH gene is unique. The sgRNA is used in a method for pig CMAH gene specific knockout through the CRISPR-Cas9, the pig CMAH gene can be rapidly, accurately, efficiently and specifically knocked out, and the problems of the long period and high cost of construction of a CMAH gene knockout pig are effectively solved.

The invention discloses a method for CRISPR-Cas9 specific knockout of a pig GGTA1 gene and sgRNA for a specific targeted GGTA1 gene. The target sequence of the sgRNA for the specific targeted GGTA1 gene on the GGTA1 gene is in accordance with the sequence arrangement rule of 5'-N(20)NGG-3', wherein N(20) represents 20 continuous bases, and each N represents A or T ot C or G; the target sequence on the GGTA1 gene is positioned at a junction of 5 exon coding areas and / or adjacent introns of the N-end of the GGTA1 gene; and the target sequence on the GGTA1 gene is unique. According to the method for CRISPR-Cas9 specific knockout of the pig GGTA1 gene via sgRNA, specific knockout of the pig GGTA1 gene can be rapidly and accurately realized with high efficiency, and the problems of long period and high cost for constructing the knockout of the pig GGTA1 gene can be effectively solved.

The invention discloses a method using CRISPR-Cas9 to specifically knock off pig PDX1 gene and sgRNA of PDX1 gene for specific targeting. The target sequence of sgRNA of PDX1 gene for specific targeting on PDX1 gene is accord with the sequence alignment rule of 5'-N(20)NGG-3', wherein N(20) represents 20 continuous bases, and each N represent A, T, C or G; the target sequence of PDX1 gene is arranged in the first exon coding region on the N terminal of PDX1 gene or a junction between the coding region and neighbored intron, and the target sequence of PDX1 gene is unique. The provided method can rapidly, precisely, efficiently and specifically knock off PDX1 gene of pigs, and solves the problems of long period and high cost of pig PDX1 gene knocking.

The invention provides a mirror image storage and distribution system for virtual machines. The mirror image storage and distribution system comprises cluster management servers, local object storage servers, DHT-MAP mapping servers and QEMU block drivers, wherein the local object storage servers, the DHT-MAP mapping servers and the QEMU block drivers run on test computers of a distributed cloud computing platform. By the adoption of the mirror image storage and distribution system, batch and fast deployment of distributed cross-region virtual machines can be achieved, and the defects that the period is long, dynamic extension can not be achieved and usability is low when a traditional system and method are used for deploying the virtual machines can be overcome.

The invention provides a glaze for fast-fired crystal glaze ceramic tile and a preparation method and applications of ceramic tile. The glaze comprises basic crystal glaze and a color developing agent, wherein the basic crystal glaze comprises the following raw materials: zinc oxide, titanium dioxide, quartz, cryolite, zinc phosphate, kaolin, and lead frit. A proper amount of zinc phosphate is introduced into the glaze to avoid the raw material frit treatment, which is carried out to ensure the residual amount of nucleating agent, the requirements on the glaze granularity are reduced, the manufacture technologies of crystal glaze and ceramic tiles are simplified, and the technical difficulties that the crystal glaze sintering technology is complicated, the crystal patterns are difficult to control, and the production cost is high are solved. Moreover, the addition amount of quartz and lead frit is precisely controlled to obtain crystal glaze art ceramic tiles which have the advantages of good crystallization effect, strong three-dimensional effect, and good artistic effect. The provided preparation method has the advantages of simpleness, lower sintering temperature, shorter period, and suitability for massive industrial production.

A formation method of a lithium ion battery comprises the following steps of placing an aged battery in a formation device for formation in a high-temperature pressurized environment, charging by using 0.1-0.5CmA current during charging until to a cut-off voltage of 3.7V, and then charging by using 0.5-2.0CmA current until to a cut-off voltage of 4.0V; increasing the temperature and keeping the pressure unchanged, and carrying out heat preservation and pressure maintaining on the battery; reducing the temperature and the pressure, and cooling the battery; and carrying out vacuum pumping and secondary sealing on the battery subjected to cooling finish, and completing formation. According to the formation method, a battery core is placed in a high temperature and certain pressure condition for large-current charging formation, the processing time is shortened, and the production efficiency is improved; moreover, the contact of an operator to the lithium battery core is reduced, and the cost problems caused by poor appearance, damage and the like are reduced; and the consistencies on the thickness, the capacity and pole piece interface states of the battery are higher, and the cycle ability is improved.

The invention discloses a rapid propagation method of grape grafted seedlings. The winter grape hard branch is taken as a rootstock and a scion. Through an appropriate temperature, the graft union is firstly in thermal synthesis. Afterwards the rootstock surface is heated for the callus of the graft union. A medicament with an proper formula is adopted for the dipping of the injured face to facilitate the healing of the graft union and the wound healing and rooting of the rootstock lower part, in which the step is that the first is the rootstock branch treatment, the second is the ear shoot treatment, the third is the inlaying grafting and connecting of the rootstock branch and ear shoot, as well as the ear opening bandaging, the fourth is the heat wound healing of the graft union, the fifth is the wound healing and rooting of the rootstock opening, the sixth is the transplanting and container transplanting seedling. The invention is simple and practical with convenient operation, short seedling cycle which only needs 1 to 8 months, high survival rate which can be more than 90%, low production cost, strong seedling growth, long growth period, fully aging branches and tendrils and good seedling quality, thereby the mechanical large-scale factory production is facilitated.

The invention discloses an intelligent distribution patrol and management system and a work flow thereof. The system comprises a local area network composed of a GIS work station and a GIS server and an RFID mobile patrol terminal, wherein a wireless network transmission device is used for transmission between the local area network and the RFID mobile patrol terminal. By using the non-contact automatic identification technology of the RFID system, each distribution equipment is printed with a unique electronic marker, and a unique identification marker of each equipment is established in a distribution GIS system database. Patrol staff can accurately track the running condition of each equipment and import data into the distribution GIS system database by using the RFID mobile patrol terminal. Thus, the defects of inappropriate patrol, unscheduled patrol and nonstandard recording on the distribution equipment can be fundamentally solved, and simultaneously, the complicated and repeated work of recording equipment defects in the charge of group members can be avoided, thereby relieving the patrol workload of the group and improving the patrol efficiency and accuracy.

The invention discloses a similarity mining method of similar behaviors between multiple views and a behavior recognition method. The behavior recognition method is based on the similarity mining method. The similarity mining method comprises calculating a Hessian matrix response of every pixel in every frame of gray images of video streaming of different views of the similar behaviors frame by frame; determining feature points according to the matrix responses; building space-time feature descriptors of the feature points and obtaining posture description vectors after dimensionality reduction; calculating a similarity recurrence plot matrix with the posture description vectors as low-level features; and obtaining recursiveness descriptors according to the recurrence plot matrix and clustering the recursiveness descriptors. According to the similarity mining method of the similar behaviors between the multiple views and the behavior recognition method, posture modeling is achieved through a space-time feature point method and recursive similarity between the multiple views is mined through a recurrence plot, so that the problem that background segmentation dependency is easy to cause distortion of human body postures is solved and the accuracy of similarity mining and the robustness of behavior recognition are improved.

The invention discloses an automatic test system for onboard cable integrity. The automatic test system comprises a test host and multiple test terminals, wherein the test host and the test terminals are connected through a CAN bus network, and the test terminals are distributed at the portions needing to be tested of an airplane. Each test terminal comprises a CAN bus input interface, a CAN bus node processor, a cable test extension box, a switch board, an analog bus and a digital bus. The test host gives out a control command, after the test terminals receive the command through the CAN, relays on the switch boards are controlled to be switched on, thus, a test loop of a cable is formed, and a function test is finished. Through the technology of CAN application, database drive and the like, the automatic test system has the advantages of being high in test speed and accuracy, capable of reducing the length of the switching cable and the like.

The invention provides a head medical model quick forming method based on 3D printing. According to the method, CT / MR multimode medical images are used, a three-dimensional model is quickly established for head tissue / organs, and a 3D printing method is used for carrying out quick forming on the three-dimensional model. The method comprises the steps that (1) a multimode image registration technology is used, and the CT / MR images are registered into a unified space coordinate system; (2) according to medical information provided by the CT / MR images, different kinds of head tissue / organs are extracted; (3) the three-dimensional model is established for the extracted tissue / organs; and (4) the three-dimensional model is subjected to layering layer by layer, cross section data after layering are obtained, and 3D printing is carried out according to the cross section data. According to the CT / MR images, the head tissue / organs can be subjected to quick and accurate modeling, the manufacturing speed and the accuracy of a head medical model can be effectively improved, and a customized and personalized head medical model can be provided.

The invention relates to a method for preparing an ecological organic fertilizer from organic waste. The method comprises the following steps of putting the organic waste of which the moisture content is within 95% into a subcritical water reaction kettle, adding biomass which is 0-10% of the organic waste, feeding NaOH to the reaction kettle to adjust the pH to 7.5-8.5; leading steam into the reaction kettle, adjusting the temperature to 150-300 DEG C and the pressure to 0.5-5.0MPa to react for 15-60 minutes; baking or dewatering the product until the moisture content is 50-65%; feeding a microbial agent which is 0.5-1% of weight of the product to the baked or dewatered product; evenly mixing and then piling, heating the pile to 60-70 DEG C after 2-3 days to be stable, and carrying out heat preservation at 55-65 DEG C to maintain for 5-7 days, and turning when the temperature exceeds 65 DEG C and preparing the product until the temperature is not changed. By adopting the method, the limitation of the traditional aerobic fermentation is broken through; pathogene can be thoroughly killed; no bad smell or heavy metal pollution appears; the treatment cost is reduced; the treatment efficiency is improved; and the highest target of resource utilization of the organic waste is achieved.

The invention discloses macroporous konjac glucomannan granules, specific surface area and pore volume of which are respectively 5-15m2 / g and 0.1-0.8 ml / g. The invention also discloses a preparation method of konjac glucomannan granules. Pore-foaming agent is added in konjac glucomannan aqueous solution; macroporous konjac glucomannan granules of different specifications and pore volumes can be prepared by adjusting the content of pore-foaming agent. The preparation method provided by the invention that adopts balling and crosslinking one step reaction shortens production period and simplifies balling process steps, which results in that only 5-12 hours and simple reaction device can produce; besides, the macroporous konjac glucomannan granules provided by the invention can be widely applied to the separation and the purification of the protein.

The invention belongs to the field of an external wall insulation material of a building, and particularly relates to a high-performance foam concrete insulation board and a preparation method thereof. The high-performance foam concrete insulation board is prepared from the following raw materials in parts by weight: 45-250 parts of cement, 10-125 parts of admixture, 6-30 parts of foaming agent, 40-130 parts of water, 0.8-5.5 parts of additive, and 2-11 parts of modifier in a mixed casting manner. The insulation board provided by the invention is light in weight, high in strength and excellent in waterproofness.

The invention belongs to the technical field of soil remediation, and in particular relates to an ecological remediation device for electroplating waste land polluted soil. The ecological remediation device comprises an ecological soil remediation pond, a nutrient liquid adjusting pond, a first atomizer and a first sucking pump, wherein the ecological soil remediation pond comprises a rainwater collecting tank positioned at the bottom and a polluted soil piling area positioned above the rainwater collecting tank; aquatic plants and terrestrial plants are planted in the polluted soil piling area; the rainwater collecting tank is connected with the nutrient liquid adjusting pond through a first pipeline; the nutrient liquid adjusting pond is connected with the first atomizer through a second pipeline; the first sucking pump is arranged on the second pipeline; the first atomizer is positioned above the polluted soil piling area. Compared with the prior art, the device has the characteristics of economy, environment-friendliness, high efficiency and short remediation period when being used for remedying electroplating waste land polluted soil. In addition, the invention further discloses an ecological remediation method for electroplating waste land polluted soil.

The invention relates to a diesel, in particular to an explosion-proof diesel, which is applicable to anti-explosion power devices on various fixed and mobile equipment underground coal mine, solving the problems that no explosion-proof diesel product exists in domestic market, while the imported explosion-proof diesel has complicated structure, high price, long lead time of components and parts, untimely service, high maintenance costs and the like. The invention comprises a diesel body, a cooling system, a fuel supply system, an exhaust system and an air intake system, wherein, the cooling system, the fuel supply system, the exhaust system and the air intake system are connected with the diesel body assortatively; an exhaust manifold and an exhaust pipe in the exhaust system are all provided with water jackets; an outlet of the exhaust pipe is connected with a waste gas processing box; the air intake pipeline of the air intake system is provided with an air intake barrier; the invention is further provided with an air starter and protection system. The invention solves the problems of difficult assortment, difficult maintenance and long period of vulnerable components of imported machine types; the air starter and protection system adopts a compressed air starter to start and has the advantages of safety and reliability, convenient maintenance under the mine; the air exhaust is safer and the discharging is effectively reduced.

A remote monitoring system for engineering equipment includes monitoring computer, modem, internet, mobile communication net and at least one engineering equipment with monitoring computer connected with the internal through the modem. The control part for the engineering equipment consists of signal collecting unit, PLC controller, radio communication processor and executing mechanism. The PLC controller transmits the parameters indicating the operation state of each part of the equipment collected by a collecting unit to the radio communication processor after they are processed by the PLC controller, the processed parameters are sent to the mobile communication net by the radio communication processor, and furthermore are sent to the monitoring computer via internet by mobile communication net.

The invention discloses a real-time detection method for drought status in a detected area based on a miniature unmanned plane. By employing the miniature unmanned plane and a matched remote controller and a host computer, the host computer and the miniature unmanned plane are connected through a wireless transmission module, a cloud deck mechanism with a camera is loaded on the miniature unmanned plane; sub areas are divided, image acquisition points, coordinate position, height and aerial photography angles can be set, and are sent to the miniature unmanned plan according to a sampling sequence, the coordinate position information received by the miniature unmanned plane is used, automatic cruise acquisition detection is carried out, the plane images in the detected area can be obtained by splicing images, and the drought status can be determined through a meteorology drought grade standard. The drought status detection is carried out by employing the camera of the unmanned plane, the camera can substitute a satellite for real-time monitoring, acquisition of high-resolution image is realized, disadvantage that image can not be obtained due to shielding of a cloud layer by satellite remote sensing can be made up, and problems of long revisiting period and untimely emergency of traditional satellite remote sensing can be solved.

The invention discloses a skid-mounted supercharging and hydrogenation unit which comprises a frame and further comprises an instrument air system, an air unloading pipe, supercharging equipment, a closed type cooling water system, refilling equipment, a control system and ventilation equipment which are integrated to the frame. According to the skid-mounted supercharging and hydrogenation unit, the other structures except for a storage device are all integrated to the frame, and therefore the skid-mounted supercharging and hydrogenation unit at least has the beneficial effects that all equipment of a hydrogen refueling station can be highly integrated, and the problems that transportation is difficult, the occupied area is large, and the station building period is long are solved; and highly integration of functions and control of the skid-mounted hydrogen refueling station meets the market diversification requirement, and market promotion of hydrogen energy equipment is facilitated.

The invention provides an archaistic building and a manufacturing method thereof, relating to the technical field of manufacturing of historic buildings. The archaistic building comprises a ground foundation, a main body steel structure, archaistic upright pillars and archaistic joint tiles, wherein the archaistic joint tiles and the archaistic upright pillars are made of modified cement and are factory prefabricates with lifelike forms and excellent assembling and archaistic effects. Besides, the steps of the manufacturing method are simple, and the manufactured archaistic joint tiles are scientific in physical dimension design and reasonably butted and have the advantages that water seepage and rain leakage are avoided, the texture is real, the durability is good, and the appearance and the proportion are accordant with traditional tiles. According to the manufacturing method, the technical problems of long construction cycle and short service life in the prior art are solved, the construction of the archaistic building is relatively reasonable, and the application of the archaistic building is relatively wide.

The present invention discloses a comprehensive stress acceleration test method, comprising selecting failure stresses, such as S and S, having smaller coupling effects from all failure stresses S of a product as test comprehensive stress; determining the maximum stress levels S<max> and S<max> under the condition that the failure mechanism of the product is not changed according to existing test information or history similar product fault information; designing an orthogonal test based on the information according to reasonable selection of the test stress levels and reasonable selection of test samples; obtaining failure data t<hlk> of the samples under combination of different comprehensive stress levels; obtaining an acceleration model of the stress S satisfying product characteristics by fitting according to data of failure changes of the product along with changes of the magnitude of the stress S under the condition that the magnitude of the stress S is constant, and obtaining an acceleration model of the product under the stress S in the same way; obtaining acceleration model parameters under the various stresses; converting the failure data t<hlk> under the comprehensive acceleration stress into failure data t'<hlk> under the conventional comprehensive stress; and finally fitting a product fault probability distribution expression in a failure probability distribution manner, and completing verification or evaluation of indexes of product reliability.

The invention discloses a programmable analog unit for processing a sensor signal, which comprises a first programmable switched capacitor group, a second programmable switched capacitor group, a programmable main fully differential operation amplifier, a first programmable auxiliary fully differential operation amplifier, a second programmable auxiliary fully differential operation amplifier, an output multiway selector and an output control module, wherein the first programmable switched capacitor group is used for receiving an external sensor differential signal; the second programmable switched capacitor group is used for receiving an external sensor differential signal; the programmable main fully differential operation amplifier is used for generating and outputting a main fully differential signal after signal processing; the first programmable auxiliary fully differential operation amplifier is used for generating and outputting an auxiliary fully differential signal; the second programmable auxiliary fully differential operation amplifier is used for generating and outputting an auxiliary fully differential signal; the output multiway selector is used for selecting and outputting one way of differential output signal; and the output control module is used for generating and outputting a positive-negative reverse-phase or modulated differential output signal. The programmable analog unit for processing the sensor signal can read out small capacitance and small voltage sensing signals and process analog signals, is applied to sensor signal detection of physical quantities such as an angular velocity, an accelerated velocity and the like, and is suitable for circuits of an FPAA (field programmable analog array), a FPMA (fixed preassigned multiple access) and a PSOC (programmable system on chip).

The invention relates to a method for extracting cyclic adenosine monophosphate (cAMP) from red jujubes, which comprises the steps of cleaning of the red jujubes, soaking of the red jujubes at normal temperature, precooking and pulping, zymohydrolysis on pectin mixed enzyme, filter pressing, anion resin combination, formic acid elution, nano-filtration and interception of formic acid with nano-filtration membrane, and purification, thus obtaining a finished product. The method solves the problems of complex current process, long period, low product purity and the like, and has the advantages of rich raw material sources, simple process, large processing amount, high extraction rate, high product purity and the like; the product is a natural non-toxic product; the finished product cAMP can be used for medical raw materials or used as food additive; the extracted byproduct red jujube juice can be continuously and deeply processed to promote the industrial chain of comprehensive development and achieve pollution-free production; the modern nano-filtration technology is applied to industrial production, therefore, not only the cost is reduced, but also a better path for deeply processing the red jujube raw material is provided, and the consumption of energy is greatly reduced; and the method not only has important economic benefit, but also has remarkable social benefits.

The invention discloses a method for inducing blueberries to root by using liquid culture media and permeable matrix, comprising the following steps: (1) preparing rooting culturing media; (2) transferring the healthy and strong blueberry seedlings which are subcultured for 40d and are 3-4 cm high into the rooting culturing media, culturing the blueberry seedlings for 7-10d in the dark and for 12h / d for about 20d under intermitted illumination condition until the blueberry seedlings have 3-7 root systems of 0.5-2 cm long; and (3) transplanting the test-tube blueberry seedlings which are cultured for 30d to root, are 3-6 cm high and have the root length of 0.5-2 cm into the media in which the proportion of turfy soil to moss is 1:1, and managing the blueberry seedlings. The rooting culturing media is prepared according to the following substeps: 1) preparing 0.8 cm*1.2 cm filtering paper balls or defatted cotton balls or 0.2 cm*0.6 cm vermiculites which function as the matrix of the rooting culturing media; 2) preparing rooting culturing solution which has the WPM of 1 / 2, the IBA of 1.0-5.0 mg.L-1, the edible white sugar of 2 percent and the pH value of 5.0-5.2; and 3) adding 6-10 filtering paper balls or defatted cotton balls or 20-30 vermiculites which are soaked by the rooting culturing solution and adding 3-5 ml rooting culturing solution to each culturing bottle and capping the culturing to sterilize according to the routine method. The invention has short rooting period and low production cost, can ensure that 100 percent of the blueberry seedlings can root and over 95 percent of the transplanted blueberry seedlings can survive and realize the rapid industrialized propagation of the blueberry seedlings on a large scale.

The invention discloses an acoustical method and a device for detecting low-concentration sulfur hexafluoride gas. The method comprises the following steps of: utilizing a relation between velocity of ultrasonic wave transmitting in gas and gas molar mass, measuring travel time when the acoustic wave passes through a detection channel with fixed length by a method of amplitude modulation and envelope detection applied to communication, calculating the travel time in air without mixed sulfur hexafluoride under a current environmental condition at the same time, and representing sulfur hexafluoride concentration by use of time difference of ultrasonic wave detection propagation delay and reference propagation delay. The method has a good detection effect and high precision, and problems of insufficient detection precision of the travel time and a cross cycle in a conventional low-concentration sulfur hexafluoride acoustic velocity detection technology are solved, and precise detection of low-concentration sulfur hexafluoride concentration in a single channel manner is realized.

The invention discloses a mobile evolved packet network system comprising a base station which is connected with user terminals and used for receiving messages and first service requests from the user terminals, an MME (Microsoft Mobile Explorer) which is connected with the base station and used for receiving the first service requests through the base station and generating second service requests related to the first service requests, an OPENFLOW controller which is connected with the MME and used for receiving the second service requests and generating message forwarding commands based on the second service requests, and forwarding face equipment which is connected with the OPENFLOW controller and the base station and used for forwarding the messages under the control of the message forwarding commands.

The present invention relates to a method for quickly measuring speed with high precision, in particular to a method for quickly measuring the speed of a motor with high precision. By labeling a Hall signal of the detected motor, the rotation rate of the motor which is accurately acquired by using a small section of signal in the rotation process of the motor is realized. Under the condition of stable speed, and the magnitude relation of the lengths of three Hall signals which are generated during the process of one complete revolution of the detected motor is labeled for determining the corresponding relation of a Hall element and different poles during the actual operation. Meanwhile, the trace and the positioning of the corresponding poles of the Hall signals during the operation process of the motor are completed. The primary advantage of the method is to use the small section of the signal generated during one complete revolution of the motor to accurately acquire the rotating speed of the motor speed. The quick and highly-precise speed measurement is realized.