235results about How to "Reduce technical risk" patented technology

The invention discloses a semi-physical simulation testing platform of a train control network, which comprises a vehicle-mounted electrical control system, a software simulation control system and / or a physical control system and a data acquisition interactive system, wherein the software simulation control system and / or the physical control system is connected with the vehicle-mounted electrical control system; the data acquisition interactive system is connected with the vehicle-mounted electrical control system so as to convert a signal output by the vehicle-mounted electrical control system into a digital signal or convert the digital signal into an input signal required by the vehicle-mounted electrical control system; and the data acquisition interactive system is connected with the software simulation control system and / or the physical control system so as to convert the digital signal connected and output by the software simulation control system and / or the physical control system into a switching value signal or convert the switching value signal into the digital signal required by the software simulation control system and / or the physical control system. The semi-physical simulation testing platform of the train control network is capable of comprehensively implementing evaluation and verification on the design of a train network control system, eliminating possibledesign errors, rapidly positioning faults to ask for reasons, and reducing the production debugging cost and the technical risks of real trains.

The invention relates to the technical field of solar energy thermal power generation and discloses a tower-typed solar energy thermal power generation system with two-stage thermal storage. The system at least comprises a photo-thermal conversion subsystem, a two-stage thermal storage subsystem and a power subsystem; wherein, the photo-thermal conversion subsystem is used for receiving and converging solar radiation energy, converting the received solar radiation energy into heat energy, and transmitting the heat energy to the power subsystem or the two-stage thermal storage subsystem; the two-stage thermal storage subsystem is used for storing the heat energy input by the photo-thermal conversion subsystem and providing the heat energy for the power subsystem when the solar radiation energy is not enough; the power subsystem is used for converting the received heat energy into electrical energy and outputting the electrical energy. By adopting the invention, the problem that the steam is difficult to store is solved, and the difficulty that the running of a steam turbine in the previous tower-typed solar energy thermal power generation proposal by taking the steam as heat absorption working substance is influenced by the unstable and discontinuous solar radiation is overcome.

The present invention belongs to a denitration method by utilizing biomass direct combustion and secondary combustion and flue gas recirculating process and its equipment, and relates to a coal powder boiler low NOx combustion process and its equipment. The invented method includes the following steps: making coal powder be passed through the combustor of coal powder boiler and fed into main combustion zone to make combustion and form the flue gas containing NOx; utilizing the mixture of once air and recirculating tail portion flue gas to spray biomass particles into secondary combustion reduction zone and make NOx formed in the main combustion zone be reacted and formed into N2; at the same time make the biomass coke ad NOx produce isophase reduction reaction to form Nz; spraying burning air from upper portion of secondary combustion reduction zone to make non-burnt combustible material be burnt up.

The invention relates to an open cross-platform system for cloud computing mobile network terminal equipment. The system comprises a mobile network terminal, a cloud computing server and a personal computer. A cloud open cross-platform middleware system is set in the mobile network terminal, and consists of an interpreter, an information processing program module, a platform interface service module and a terminal connecting layer. The cloud computing server consists of an application downloading and updating server, a gateway module and a server connecting layer. The application downloading and updating server is connected with an application program manager. The gateway module is connected with a community service module, a cloud service module, a WEB server, a third-party calling module, a third-party service module and the server connecting layer. The server connecting layer is connected with the terminal connecting layer. The open cross-platform system solves the problem of convenience in the multi-equipment operations of equipment users and application developers, and realizes rapid publishing.

The invention provides a detection system for detecting the quality defects of a building external wall. The system comprises a flight device, a surface condition gathering device and a monitoring system, wherein the monitoring system comprises a man-machine interactive system, a control system and a data processing system; the man-machine interactive system controls the flight device and the surface condition gathering device through the control system, gathers external wall surface conditions, and outputs gathered information to the data processing system, so as to process the gathered information; a processed result is displayed through the man-machine interactive system. The invention further provides a detection method for detecting the quality defects of a building external wall. The method comprises the steps that the control system controls the flight of the flight device and meanwhile controls the surface condition gathering device to gather external wall quality information, transmits flight positions and gathered information in real time to the data process system through a wireless signal emission device, so as to process the flight positions and the gathered information, and further obtains a detection conclusion. The detection system and method can realize convenient, efficient and accurate detection of the quality defects of the building external wall.

The invention discloses a monitoring system for a container Bay. A first image capture device is installed on the bottom of a trolley for carrying out real-time tracking on a container; a second image capture device is installed on the center position of the front big arm of a bridge crane cross beam for monitoring container Bay information; at least one third image capture device is installed on the seaside of a wharf for identifying a container number; the landside of the wharf is provided with at least one fourth image capture device for identifying the container number; a travelling bridge PLC (Programmable Logic Controller) and an identification server are arranged in a travelling bridge control room; the PLC carries out linkage control on the identification server to send the real-time coordinates of a travelling bridge trolley and a sling for lifting loads to the image capture devices to enable the image capture devices to obtain the real-time position of the container; in a container loading and unloading process, the image capture devices on different positions are triggered to carry out accurate capture on a plurality of surfaces of the containers; and obtained image information is uploaded to the identification server to identify the number of the container, and is uploaded to a monitoring management center.

The invention discloses a multi-channel data acquisition device for a submarine pipeline magnetic flux leakage internal detector. The multi-channel data acquisition device comprises a hall sensor, a multi-path switch, an instrument amplifier, an analog-to-digital (AD) conversion module, a field programmable gate array (FPGA), a digital signal processor (DSP) and a secure digital memory (SD) card, wherein the multi-path switch has a two-stage series structure; the multi-channel data acquisition device is provided with heat insulation cotton so as to adapt to a specific high-temperature and high-corrosion environment of a submarine pipeline; the hall sensor converts the magnetic induction density into voltage; the voltage is switched by the multi-path switch, so that a signal is transmitted to the instrument amplifier; the instrument amplifier amplifies a weak signal; the AD conversion module sets sampling for eight times through software, performs analog-to-digital conversion, and transmits a digital value to the FPGA after the conversion; and the DSP receives FPGA cached data, digitally filters and compresses the cached data, and finally stores the data into the SD card. Due to a dual central processing unit (CPU) structure consisting of the FPGA and the DSP, a large amount of data can be stored and processed; the device has the characteristics of high speed, multiple channels, high resolution and the like; furthermore, pipeline transportation safety is guaranteed; and early maintenance is facilitated.

The invention discloses an aluminum film baffle device and a pulse solid engine applying the same. The aluminum film baffle device takes a flexible aluminum film baffle as a fracture element and is matched with a hollow-carved baffle support in a cross-shaped supporting structure. The aluminum film baffle can bear high pressure and cannot be fractured in the direction where the aluminum film baffle is supported by the baffle support while the flexible aluminum film baffle can be fractured easily in the direction where the aluminum film baffle is not supported by the baffle support. One side of the aluminum baffle, which cannot be fractured, is dead against a first pulse grain so as to prevent the aluminum baffle from being fractured during the burning process of the first pulse grain of the engine. Therefore, a second pulse grain of the engine can be protected. When the second pulse grain is ignited, the aluminum film baffle rapidly is fractured so that gas passes through the aluminum film baffle device. The device provided by the invention has stable and reliable performance and the material of the baffle is easy to get and process. The fragments of the fractured aluminum film baffle can not affect the operation of the engine and the device has no special requirements on a loading device and an igniter.

The invention relates to a method for detecting collision of a curtain wall through the BIM technology. The method comprises the following steps that a parameterized curtain wall BIM model is established in BIM software; internal collision detection is conducted on all model units forming the BIM model in the prior step; the curtain wall BIM model and an external relevant professional BIM model are overlapped and integrated to form a task model and external collision detection is conducted on the task model; after external collision detection meets requirements, collision data are output and a detection report is submitted. According to the method, by establishing the parameterized curtain wall BIM model, conducting internal collision detection on the model and conducting external collision detection on the relevant professional BIM model, the optimal solution of curtain wall designing parameters can be solved easily by using the collision data detected through the method, therefore, it is guaranteed that the scheme is practicable after BIM model adjustment, efficient design and construction of complex curtain wall systems in large construction engineering projects are realized, and meanwhile, the technical risk of the projects is lowered. The method for detecting collision of the curtain wall through the BIM technology can be applied to curtain wall designing.

A technology for treating and purifying copper electrolyte by vortex electrolysis relates to the technical field of copper electrolyte purification. The treatment process comprises the steps of: 1. carrying out secondary filter on copper electrolyte to be purified and treated; 2. sending into a vortex electrolysis system to produce standard cathode copper; 3. after three segments of vortex electrolysis, sending the solution with a copper content of 2-4g / L to a vortex electrolysis powder impurity removal stage; 4. removing impurities of arsenic, antimony and bismuth in a powder vortex electrolytic tank; and 5. forming a small amount of black copper ash with a low copper content in a filter cake after press filtration and sending a filtrate into a next operation. The technology of the invention can substitute a traditional induction copper and impurity removal method for purifying and treating copper electrolysis waste liquid, so as to provide an electrolysis technical scheme, which is efficient and reliable, and has simple process flow, simple operation and low cost, for purifying copper electrolysis waste liquid.

The invention discloses a rotational-flow electrolysis method and a device thereof, which represent new technology for performing selective electrolysis (electrodeposition) on valuable metals and are particularly suitable for performing selective electrolysis (electrodeposition) separation and purification on low-concentration solution, which has complex composition in the metallurgy industry, and stripping heavy metal ions from waste water. Due to the adoption of the technology, the problems of small electrolytic current density, non-uniform current distribution, great difficulty in removing impurities from solution, long process flow, high production cost, low overall efficiency and the like existing in the electrolysis process of conventional flat plate (frame) electrolysis technology (device) can be solved effectively. Moreover, an electrolysis technical solution (device), which has the advantages of high efficiency, reliability, simple process flow, simple and convenient operation and low cost in the presence of complex solution composition, is provided.

The invention belongs to the field of the Internet, and particularly relates to a crawler identification method and device for a website server. The method comprises the following processes that: on the basis of the IP (Internet Protocol) address of a user, marking an access user; dividing user access requests, classifying the user access requests with the same request resource, request domain name, subdomain name and access path in the user access request into the same type of access requests; on the basis of resource type of each class of access requests, dividing a core resource access request; on the basis of the request time continuity, the request content continuity, the access duration and the access frequency of the core resource access request of the access user, carrying out crawler access judgment; and processing the user who is judged as crawler access. By use of the method, through various means, the crawler behavior of the user is effectively identified, implementation cost is low, a coupling degree with website businesses is low, and transportability is high. The method is independent of website business service logic, is easy in updating and upgrading and is low in operation and maintenance cost and technical risks.

The invention discloses a double-stage heat storage trough type solar thermal power generation system. The system comprises a double-stage trough type solar heat collection field, a double-stage heat storage sub-system and a power generation sub-system. The double-stage trough type solar heat collection field comprises a high-temperature heat collection field and a low-temperature heat collection field and is used for receiving and collecting solar radiation energy. The high-temperature heat collection field is used for converting the collected solar radiation energy into heat of high-temperature heat conducting oil. The low-temperature heat collection field is used for converting the solar radiation energy into heat of low-temperature heat conducting oil. The double-stage heat storage sub-system comprises a high-temperature heat accumulator and a low-temperature heat accumulator. The high-temperature heat accumulator is used for storing the high-temperature heat conducting oil output by the high-temperature heat collection field. The low-temperature heat accumulator is used for storing the low-temperature heat conducting oil output by the low-temperature heat collection field. The power generation sub-system is used for converting the heat of the heat conducting oil into steam, converting the steam into electric energy and outputting the electric energy. By using the system disclosed by the invention, a problem of reduction of heat collecting efficiency resulted from high average heat absorption temperature of a mirror field is resolved; furthermore, problems of high high-temperature resistance performance of the mirror field to the conducting oil, high investment of the conducting oil and high power generation cost are resolved.

The invention relates to a method for quantificationally distinguishing contributions of different factors in a water cycle evolution process, which includes the following steps: building a binary water cycle model; judging evolution conditions of water cycle factors under action of different factors; calculating quantitative evaluation indexes of water cycle factor evolution in different conditions; and quantificationally distinguishing contributions of different factors in the water cycle evolution process. The method combines the fingerprint identification technology in the meteorology and climatology and the binary water cycle model in the hydrology and water resource science, and is a technique capable of quantificationally distinguishing contributions of natural factors and human activities in the water cycle evolution process, and can quantificationally distinguish contributions of the natural factors and the human activities in the water cycle evolution process by adopting the distributed river basin water cycle simulation technology, the climate mode and hydrological model coupling technology, a Monte Carlo statistical method and the fingerprint identification technology and comparing the quantitative evaluation indexes of water cycle factor change conditions in different conditions.

The invention, which belongs to the technical field of optical machine assembling adjustment, discloses a device and method for centering mounting adjustment of a large-calibre aspheric-surface reflector. The method is characterized in that a to-be-adjusted aspheric-surface reflector is fixed at a rotary adjusting mechanism of a centering device; deviation between an optical axis of the aspheric-surface reflector and a reference axis is measured in real time by using an eccentricity measuring system in the device and the position and direction of the deviation are displayed at a display device; and the position attitude of the aspheric-surface reflector is adjusted, so that the overlapping error between the reflector optical axis and the reference axis is smaller than a designed allowance value and thus centering assembling adjustment of the aspheric-surface reflector is completed. With the device and method, a centering problem of a large-calibre rotary symmetric aspheric-surface reflector can be solved. The device and method have characteristics of simple instrument erecting, great convenience in operation, and high centering precision and the like.

The invention provides a process for recycling copper through electrodeposition by treating scrap copper materials by adopting a cyclone electrolysis technology, belonging to the technical field of recycling copper from wastes containing copper. The process is characterized by taking various purchased wastes containing copper as raw materials, preliminarily screening and grinding the wastes, adding the materials to a dissolved copper leaching bath device to undergo continuous copper dissolving to obtain a copper sulfate solution, then filtering the solution with precision filter equipment, decoppering the obtained filtrate through cyclone electrolysis, scalding an obtained copper pipe with weak acid and then feeding the copper pipe into a product processing unit to process a standard copper plate. The process has the following beneficial effects: through portable or module assembly, the cyclone electrolysis bath and support equipment are convenient to install, dismantle and move; the solution circulates in a closed loop, thus avoiding emission of harmful gases; electrolytic deposition is carried out on the metals selectively and the copper can be better purified by applying the cyclone electrolysis technology; higher current density and current efficiency are ensured, fewer reagents are consumed, the production cost is lowered and the enterprise revenue is improved; and high efficiency and high purity electrolytic extraction is carried out on the solution, the recycled copper is the standard cathode copper and the total recycling rate is above 96%.

The invention discloses an aircraft carrier rocket assist catapult which is mainly composed of a catapult track, a booster rocket and a canister launcher. The catapult track is arranged on a hangar foreground of a shipboard aircraft. The shipboard aircraft catapults directly on the catapult track. The rear side of the catapult track and a hangar floor are located in the same plane and connected through a pin shaft, a catapult track groove is formed in the middle, the rocket canister launcher is arranged on the lower side, and an upper opening of the canister launcher is tightly attached to the track groove. A sliding block tractor is arranged in the groove. A tractor hanging machine pull rod part is arranged on the upper portion of the catapult track, and a rocket hanging device is arranged on the portion, stretching into the canister launcher, of the lower portion of the catapult track. A backflow discharge flue and the canister launcher are arranged side by side. The booster rocket can be repeatedly used. After a first airplane is ignited and launched, the canister launcher is blown, then an appropriate amount of liquid propellant is injected into the booster rocket, and ignition is carried for launching again. The front and back slope of the catapult track can be adjusted through a hydraulic lifting device, and the sliding block tractor and the canister launcher automatically return under the effect of a spring and the track slope.

The invention discloses a method for planting coprinus comatus through shiitake waste. The method includes the following steps of 1, producing coprinus comatus bags, wherein the first step of compost preparation, the second step of bagging, the third step of sterilization, the fourth step of cooling, the fifth step of inoculation and the sixth step of culture are carried out; 2, carrying out soil-covered culture and management on the coprinus comatus bags, wherein the first step of soil-covering material selection and treatment, the second step of soil covering and the third step of mycelium culture and management after soil covering are carried out; 3, carrying out fruiting management. The method has the advantages of being high in yield and resource comprehensive utilization rate, low in planting cost and easy to popularize.

The invention belongs to the field of artificial intelligence, and particularly discloses an artificial intelligence edge computing device which comprises a core board and an interface expansion boardused for assisting function and interface expansion, and the core board is a minimum computing system which can work independently without depending on the interface expansion board. According to thescheme, the computing device can have the high operational capability, low power consumption and abundant expansion interfaces, adopts the modular design at the aspect of hardware, can be expanded according to the product requirements, has the very good scene applicability, and solves the problem that at present, in various artificial intelligence application scenes, an appropriate edge computingplatform and an appropriate end intelligent platform lack is solved. According to the present invention, an available platform is provided for edge calculation, and the platform has high flexibility,is particularly suitable for the edge calculation and end intelligence of various scenes, and is beneficial to the rapid productization and implementation of the edge calculation and end intelligencein various application scenes.

The invention relates to a wind power station LVRT (Low Voltage Ride Through) device which comprises a wind power station, electric reactors, diodes, adjustable voltage sources, a circuit breaker and a grid system. One adjustable voltage source is connected in parallel with one diode after being connected in series with one electric reactor to form one group of fault current limiting circuit; and after two groups of fault current limiting circuits are connected in series, one end of the obtained circuit is connected with the wind power station and the other end of the obtained circuit is connected with the grid system by the current breaker. The wind power station LVRT device is low in cost and easy to implement. When the LVRT function is implemented, the short current limiting capacity is improved; and by the non delay input of the current limiting electric reactors connected in series, the large-area talk around accident caused by the short circuit inside the wind power station can be avoided. The wind power station LVRT device has low requirement for the control characteristic of a unit plant; and a power electronic valve string of the wind power station LVRT device adopts a diode set string with low cost, large through-current capacity and strong short-time overload capacity, so that the system cost is reduced.

The embodiment of the invention provides a process monitoring method and device. The method comprises the following steps: monitoring a system parent process; when the creation of a sub-process by the parent process is monitored, importing an environment monitoring module into the new sub-process; transmitting a monitoring command to the environment monitoring module, and monitoring the sub-process through the environment monitoring module; when running of the sub-process is in accordance with a monitoring strategy in the environment monitoring module, acquiring the running data of the sub-process. According to the process monitoring method, a monitoring program is dynamically injected into the sub-process during establishment of the sub-process by the parent process without making any change to a source code under the situation of not influencing normal running, so that monitoring of system processes is realized, the technical risk is low, and the development cost is low. Moreover, when update or repair of bugs is required, involvement of a large quantity of source codes is avoided, so that the technical threshold is low, and greater convenience is brought to modification and use.

The invention provides a complementary type distributed energy system integrating internal combustion engine tail gas into the thermochemical process. The system comprises an internal combustion engine power generation subsystem, a thermochemistry waste heat utilization subsystem, an absorption refrigeration subsystem and a low-temperature exhaust waste heat utilization subsystem. According to the system, based on the energy utilization principle of parallel temperature and gradient utilization, exhaust waste heat recovery is conducted through thermochemical reaction, absorption refrigeration, heat supply and the like in sequence, high-temperature exhaust waste heat is utilized scientifically and reasonably in a gradient mode, heat, electric and cold diversified energy product output is achieved, and the energy utilization efficiency and grade of exhaust waste heat are improved greatly.

The invention discloses a simply-supported slab bridge jack-up method and a height-adjustable combined cushion structure applied therein. The simply-supported bridge jack-up method includes: firstly, setting up distributive girders under a girder, arranging jacks and putting up temporary supports, and then entirely synchronously jacking up a simply-supported slab to the height 1-3mm higher than design elevation; preliminarily supporting the bridge by the aid of the height-adjustable combined cushion structure and supports prior to performing zero-clearance girder falling to the designed elevation, and then demounting the jacks and the temporary supports. The height-adjustable combined cushion structure comprises a precast portion composed of precast supports and a height-adjustment combined mechanism capable of adjusting the height of the precast supports and a cast-in-situ portion coating a height-adjustable mechanism and part of the precast supports. The simply-supported slab bridge jack-up method and the height-adjustable combined cushion structure applied therein have the advantages of high applicability, controllable security, high construction precision, high operability, high economical efficiency, good application prospect and the like, thereby being capable of being used in support replacement projects of expressways and the bridges of urban roads and especially applicable to jack-up engineering when jack-up height of a sole-across simply-supported girder (slab) is larger than the stroke of one jack.

The invention relates to the technical field of low-temperature refrigeration, in particular to a superfluid helium low-temperature cycle system comprising a compressor unit, a helium liquefaction unit, a first storage tank, a second storage tank and a superfluid helium cycle unit. The ejector-based superfluid helium cycle system is designed, thus a mechanical moving part is omitted for existing superfluid helium cycle, design difficulties of these mechanical moving parts are avoided, the requirement of long-term maintenance-free operation of the low-temperature cycle system is met, meanwhile,reliability of cycle operation is improved, technical risk is lowered, and the size of the whole low-temperature cycle system is kept more compact.

The invention relates to an oil transportation pipeline leakage flow estimating device and method based on KPCA-RBF curve fitting, and belongs to the technical field of oil transportation pipeline detection. According to the estimating method, the dimensionality of data, in which non-linear relationships exist, of an oil transportation pipeline is reduced by using kernel principal component analysis (KPCA), and therefore the number of principal component variables is greatly reduced; the leakage flow is estimated in the mode of KPCA-RBF neural network curve fitting, solution of a high-order equation set is avoided, and accuracy and precision of leakage flow estimation are improved; in addition, information affecting the leakage flow serves as system input, so that the estimating method effectively adapts to the complex and changeful environment, and the practicability of the leakage flow estimating method is improved. An FPGA and DSP architecture is adopted, and compared with a single FPGA system or a single DSP system, an FPGA and DSP system has higher calculation processing capacity; the FPGA and DSP framework simultaneously has the advantages of good real-time performance of an FPGA and low development difficulty of a DSP, shortens a development cycle, reduces technical risks, and is more suitable for real-time data processing, system functions are partitioned clearly, and the overall performance indexes of the system are greatly increased.

The invention relates to the technical field of aircraft design and especially relates to an aircraft effectiveness sensitivity analysis method. The aircraft effectiveness sensitivity analysis method comprises following steps: 1. establishing a preset operational effectiveness requirement set of different air combat superiorities; 2. establishing a combat tactics set corresponding to the different requirements in the preset operational effectiveness requirement set; 3. performing large sample optimization on aircraft tactical index values to obtain an optimized interval of the aircraft tactical index values; step 3 comprises following steps: 3.1 setting an initial aircraft tactical index value as simulation input; 3.2 using the combat tactics set as a simulation scheme to carry out simulation experiment; 3.3 using the preset operational effectiveness requirement set as the evaluation criteria of simulation results. By means of the tactical index effectiveness sensitivity analysis method of the invention, aircraft optimized design is guided and combat effectiveness is increased, the related cost of development stages is reduced and technical risk is reduced.

The invention relates to a self-driven fan large-bypass-ratio turbofan engine with an inner loop air turbine and a design method. The self-driven fan large-bypass-ratio turbofan engine is characterized in that an outer bypass part is provided with a self-driven fan rotor with a larger bypass ratio and with an inner loop air turbine, the rotor comprises an auxiliary bypass fan rotor (1), an air-driving turbine rotor (3) and a rotating medium casing (5); an auxiliary bypass fan stator (2) is arranged on the downstream of the auxiliary bypass fan rotor (1); an air-driving turbine stator (4) is arranged on the downstream of the air-driving turbine rotor (3). The self-driven fan large-bypass-ratio turbofan engine has advantages: (1) while the bypass ratio is increased, the problem of the large-bypass-ratio turbofan that the rotation speed of the fan is not matched with that of the low voltage rotor can be avoided; (2) compared with the scheme of a gear turbofan engine (GTF) and a three-rotor turbofan engine for solving the mismatch problem of the rotation speed, the structure is simplified; (3) the self-driven fan large-bypass-ratio turbofan engine can be improved on the basis of the existing two-rotor turbofan engine, so that the technical risk and research cost can be reduced, and the research period can be shortened.

The invention relates to a method for processing fly ash, which comprises the following steps: adding sodium carbonate in the ground fly ash for roasting, then leaching by using water, leaching liquid carbon to obtain silica gel and aluminium hydroxide; neutralizing silica gel and aluminium hydroxide by hydrochloric acid, filtering to obtain the silica gel, processing and calcining to obtain white carbon black; performing evaporative concentration on the obtained aluminium chloride solution, crystallizing to obtain the aluminium chloride crystals, performing pyrolysis on the crystals to obtain initial alumina; and processing the initial alumina by a barer process to obtain the metallurgical-grade alumina and high iron slag, wherein the high iron slag can be a raw material for ironmaking. According to the invention, extraction for useful elements such as aluminium, silicon and iron in the fly ash can be realized, recovery rate can reach more than 90%, residue amount after extraction accounts for lower than 10% of mount of fly ash, carbon dioxide, acid and alkali required in the invention can be recovered and used, zero discharge can be realized during a whole technical process, and no secondary pollution can be generated on environment.

The invention discloses a redundancy configuration structure of an inertial measurement unit. According to the redundancy configuration structure of the inertial measurement unit, an IMU1 is installed on the lateral side 1 of a regular tetrahedron, the center of the bottom surface of the IMU1 coincides with the center of the lateral side 1, the X1 axis of the IMU1 is parallel to the side BD, the Y1 axis of the IMU1 is perpendicular to the side BD, the X1 axis, Y1 axis and Z1 axis of the IMU1 coincide with the X axis, Y axis and Z axis of a carrier coordinate system respectively, an IMU2 and an IMU3 are embedded in the lateral side 2 and in the lateral side 3 respectively, the center of the bottom surface of the IMU2 coincides with the center of the lateral side 2, the center of the bottom surface of the IMU3 coincides with the center of the lateral side 3, the Z1 axis of the IMU1 is arranged facing the outside and is perpendicular to the lateral side 1, the Z2 axis of the IMU2 and the Z3 axis of the IMU3 are arranged facing the outside and are perpendicular to the lateral 2 and the lateral side 3 respectively, the Y1 axis of the IMU1, the Y2 axis of the IMU2 and the Y3 axis of the IMU3 are all perpendicular to the bottom edges and point to the peaks of the regular tetrahedron, then the X1 axis, the X2 axis and the X3 axis are parallel to the bottom edges, and the redundancy configuration structure with the three IMU modules arranged in an oblique crossing mode is formed. According to the redundancy configuration structure of the inertial measurement unit, MAUV omni-posture navigation is achieved, and reliability of a navigation system is improved remarkably.