1733results about How to "Reduce technical difficulty" patented technology

An active transdermal medicament patch includes a planar substrate with a therapeutic face releasably retainable against the skin of a patient. A return electrode and a medicament matrix susceptible to permeation by medicament are secured at separated locations on the therapeutic face. Each electrically conductively engages the skin, when the substrate is retained thereon. A power source carried on the substrate is electrically coupled between the medicament matrix and a programmed microprocessor also carried on the substrate. A substantially invariant voltage presented at an output contact of the microprocessor is applied during a predetermined therapy period across the skin between the medicament matrix and the return electrode, inducing transcutaneous migration of medicament into the skin at a substantially constant rate. A light-emitting diode carried on the substrate and coupled to the microprocessor communicates that the patch is operating.

The invention discloses a unified extensible firmware interface (UEFI) trusted supporting system and a method for controlling the same. The UEFI trusted supporting system comprises UEFI trusted supporting system firmware and a trusted platform control module (TPCM), wherein the UEFI trusted supporting system firmware is stored on a nonvolatile memory and connected with the TPCM by a system bus; and the TPCM is connected with a trusted computation platform by the system bus. The method for controlling the UEFI trusted supporting system comprises the following steps of: firstly, loading a driver for the TPCM; secondly, sequentially authenticating the identity of users, performing measurement validation on a basis input / output system (BIOS), the characteristic data of hardware and a master boot record (MBR) / operating system (OS) Loader / OS Kernel, controlling different hardware peripheral interfaces according to an I / O strategy of the users, and performing safety guide setting on the system by a safety guide module; and finally, controlling by the BIOS or the OS. By the system and the method, trusted computation, the configuration management of the TPCM, the backup / recovery of the BIOS / MBR / OS Loader / OS Kernel and the physical protection of key data are realized on a firmware layer. The invention can be simultaneously applied to a Linux system which opens source codes and a Windows system which does not open the source codes, so that a fault does not occur in a trust chain between BIOS firmware and OS software, and the safety of a computer and the friendliness of human-computer interaction are improved.

The invention relates to a truck combination hinge angle measuring and controlling system, which mainly consists of a truck combination hinge angle measuring portion and a hinge angle controlling portion and particularly comprises a GPS (global positioning system) tester, input equipment, a microprocessor, a steering wheel rotation angle sensor, a driving front-wheel steering controller, an executing mechanism and power supply equipment. The GPS tester, the input equipment and the steering wheel rotation angle sensor are respectively connected with the microprocessor, the steering wheel rotation angle sensor is connected with a steering wheel of the truck combination, the microprocessor is connected with the driving front-wheel steering controller which is connected with the executing mechanism, the executing mechanism is connected with a truck combination steering mechanism, and the power supply equipment supplies power for the integral system. By the truck combination hinge angle measuring and controlling system, truck combination hinge angle can be measured accurately, steering harmony and running stability of the truck combination during insufficient steering and over-steeringcan be effectively controlled by the truck combination hinge angle measuring and controlling system utilizing the hinge angle as control variable.

The invention discloses a solid-state two-dimensional scanning laser radar and a scanning method thereof. The solid-state two-dimensional scanning laser radar comprises a control processing module and also comprises a laser transmitting module and a laser receiving module connected to the control processing module. The laser transmitting module includes a laser, a collimating lens and a vibrating lens. The collimating mirror collimates a detection laser beam emitted by the laser to the vibrating lens, and the detection laser beam is transmitted in different angles by the vibrating lens. The laser receiving module comprises a first mirror, the vibrating lens, a receiving telescope and a light detector, laser echo reflected from the surface of a target object is reflected to the vibrating lens through the first mirror and then is emitted to the receiving telescope in a fixed direction. The control processing module controls and perceives the working states of the laser, the vibrating lens and the light detector and carries out data processing and analysis. The MEMS vibrating lens is used as a scanning device and also is used as a receiving device, the structure is simplified, the cost is reduced, and the synchronization of the attitudes of the scanning device and the receiving device is not needed.

The invention discloses a frequency offset compensation method, which comprises the following steps that: a base station performs frequency offset estimation on received uplink signals to obtain a frequency offset estimation result, and pre frequency offset compensation is performed on downlink signals according to the frequency offset estimation result; a terminal detects the frequency of the received downlink signals after the frequency offset compensation, the emission frequency of the uplink signals is determined according to the detected frequency of the downlink signals, and the uplink signals are emitted in the determined frequency; and a terminal side performs the pre frequency offset compensation by the same method. The invention also discloses a frequency offset compensation device, which comprises a frequency offset estimation module, a pre frequency offset compensation module and a frequency detection and frequency modulation module. The method and the device can effectively reduce the frequency offset of uplinks and downlinks, perform the frequency offset compensation of the uplinks and the downlinks, and not only reduce the relative frequency offset between the base station and the terminal, but also reduce frequency jump variable when the terminal switches between the base stations, so that both the base station and the terminal can correctly correct the receivedsignals to ensure communication quality.

The invention discloses a rope net type space debris capturing and cleaning system which comprises a transmission subsystem and a fly net subsystem. The transmission subsystem comprises a transmitter, a net cabin, a net cabin cover ejecting device, a buffer device, a tying rope tension control device and a tying rope cutter, and the fly net subsystem comprises a rope net and four mass blocks; a net cabin cover can be ejected out of an outlet of the net cabin, and the rope net can be driven by the net cabin cover to be drawn out of the net cabin; the transmitter works at the moment when the fly net and a tying rope are straightened, the sides of the rope net are driven by four mass blocks according to preset transmitting opening angles, so that the rope net can fly out and is opened simultaneously until the rope net is fully opened, an object is netted after the rope net reaches the objective position, a port of the rope net is tightened under the control of the mass bocks, and the object can be completely captured; after the tying rope draws the captured object aircraft away from an orbit, the tying rope cutter cuts off the tying rope, and the object aircraft can be separated from a satellite platform. The rope net type space debris capturing and cleaning system has the advantages that a secondary transmission mode is adopted, so that twining and knotting can be prevented in rope net spreading procedures; the mass blocks are pushed to be synchronously transmitted, so that a millisecond-level synchronous transmission effect can be realized, and the shape of the rope net can be controlled advantageously.

The invention relates to a quick client development frame for a manufacturing execution system and a software development method for the frame. The frame comprises a client layer and a service layer, wherein the client layer is used for realizing client interface interaction and comprises an interface view layer, an interface model layer and a model; and the service layer is used for realizing a business logic and data storage, receiving data sent by a client, reconstructing the data of the client according to a business requirement and sending the data to a database. The software development method for the frame comprises the steps of determining a data structure and the business logic of a development page as needed; designing UML class graph automatic generation codes; adding the codes into corresponding layers of project engineering in sequence; and compiling the project engineering to generate system software. According to the frame and the method, the code writing workload of the manufacturing execution system can be greatly reduced and the code quality and the system stability can be improved; and meanwhile, by applying a layered architecture and a configuration file, the software generated by the frame can be conveniently transplanted in different database systems.

Disclosed is a high-durability protective layer compound pile. The structure of high-durability protective layer compound pile comprises: the compound pile is composed of a core bearing structure which is wrapped with a high-durability protective layer, the material of the protective layer adopts plastic or other modified products, asphalt and mortar or concrete, alkali activated material and the mortar or the concrete, geopolymer and the mortar or the concrete, reactive powder concrete, fiber reinforcement concrete base material, and resin mortar or concrete; The manufacturing and the construction can adopt six methods: firstly, site-casting can be performed to the protective layer and a core structure simultaneously; secondly, after the site-casting is performed to the protection wall of the protective layer, the site-casting is performed to the site-cast protective wall; thirdly, prefabrication is performed to the sleeve of the protective layer, and site-casting is carried out to the prefabricated sleeve of the site cast core structure of the sunk tube; fourthly, prefabrication is performed to the sleeve of the protective layer, the sleeve is taken as an outer mould plate to prefabricate the prefabricated sleeve of the core structure; fifthly, prefabrication is performed to the core structure, the core structure is taken as an inner mould plate to prefabricate the prefabricated sleeve of the core structure; and sixthly, site-casting is implemented to the protective layer and the core structure simultaneously.

The invention discloses a virtual reconstruction ubiquitous network architecture based on identity-position separation. The virtual reconstruction ubiquitous network architecture comprises a terminal and stub network layer, an edge access network layer, a virtual reconstitution core network layer, an application layer and a service support layer. The terminal and stub network layer comprises an intelligent multi-mode terminal supporting an identity-position separation mechanism, and a traditional terminal and stub network which has direct access to an edge access network or has access to the edge access network through a ubiquitous network gateway; the edge access network layer comprises wired and wireless access networks, provides access capability of an IP core network for a bottomlayer terminal, and achieves separation of control and bearing; the application layer comprises an application server, and provides unified service access capacity for heterogeneous users; the service support layer comprises various functional entities, and provides necessary function support. According to the virtual reconstruction ubiquitous network architecture based on identity-position separation, efficient convergence between heterogeneous networks is achieved through virtual reconstruction and identity-position separation, and support to terminal mobility and multi-connection capacity of users and terminals is achieved.

The invention discloses a method of detecting the residue of small-molecule substances harmful to the human body and a special kit. The special kit comprises a non-transparent micro-porous plate and a light-emitting compound, wherein each hole of the non-transparent micro-porous plate is filled with a coat antigen which is simultaneously coated with three kinds of small-molecule substances. The invention makes full use of the multi-color marking function of QDs, establishes a novel kit for simple and rapid detection of the residue and a method thereof, and realizes the multi-color marking through indirect marking of polyclonal antibodies and monoclonal antibodies in the veterinary drug by coupling the QDs with different particle sizes and targets with functional groups (such as an amino) with specific surfaces. The method comprises: obtaining quantum dots with different fluorescent characteristics through separation and purification, namely, multi-color antibody markers, using the multi-color antibody markers as fluorescent probes, and establishing a reaction system for synchronous analysis of various antigen components of different kinds, thereby realizing the synchronous detection of multiple kinds of residues of the veterinary drug in animal food. Moreover, the method has the advantages of simple operation, high fluorescence intensity and long stabilization time.

The invention relates to the technical field of patrol inspection of electric power circuits and more specifically relates to an intelligent flight control method and system for fine patrol inspection of a UAV. According to the invention, first, through manual fine patrol inspection, patrol inspection path nodes can be recorded in detail and patrol inspection paths are played back and optimized. Second, pilot fight verification is performed continuous optimization is executed. Finally, a fine patrol inspection path database for each iron tower is formed. Based on the optimized patrol inspection path databases, full automatic flight patrol inspection for the iron towers can be realized. By adopting the iron tower fine patrol inspection operation mode, patrol inspection flight paths are optimized; the positioning precision is far higher than that of manual operation, flight photographing is normalized and quality is ensured. Besides, each UAV can provide patrol inspection for multiple iron towers, outside-visibility range photographing can be realized and battery consumption in a flight process can be in fine control, so that patrol inspection efficiency can be improved. Besides, technical difficulties for patrol inspection operation workers are reduced and the application range is enlarged.

The invention provides a method for suppressing the gene expression of insects through feeding dsRNA, which belongs to the growth development field of adjusting and controlling insects through naturally feeding the dsRNA of the silenced and specific gene. The method selects a gene fragment SeA3 on chitin synthetase enzyme gene SeCHS-A, and studies the impact on the insects after the natural feeding. The method mainly comprises the steps: a proper expression vector L4440 is selected to construct a recombinant expression vector L4440-SeA3 with a purpose gene fragment SeA3; the recombinant vector is induced and expressed in specific recipient cell coliform bacteria HT115 (DE3) under vitro adaptive condition; and the recipient bacterium htLSA3 which expresses dsRNA is added into the feedstuff of the insects, the insect larvae are naturally fed with the feedstuff, the situation of the insects suppressing the gene expression is detected after the feeding, and the change of the phenotype of the insects is recorded. By adopting natural feeding to suppress the expression of the insect genes, the method explores new paths for controlling the insects.

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 an interactive low power consumption live broadcasting and recorded broadcasting system and method for teaching. The student side adopts a special low power consumption interaction terminal, and is provided with a live broadcasting control all-in-one machine; the live broadcasting control all-in-one machine can acquire audio and video streaming media, course and teaching plan pictures or files and attached media file for time axis synchronization, generate a real-time coarse data stream, and upload the real-time coarse data stream to a live broadcasting and recorded broadcasting center server; the live broadcasting control all-in-one machine further acquires the coarse data stream from the live broadcasting and recorded broadcasting center server for demultiplexing, enables the audio and video streaming media and the attached media files to reappear, and pushes the course and teaching plan pictures or files to the low power consumption interaction terminal for synchronous displaying. The system further realizes interaction between interacting contents and interacting messages. The invention provides a two-dimensional time axis synchronization technology based on an intensive timestamp and the content overlap ratio, and synchronous association of the interacting contents, the interacting messages and the real-time coarse data stream is realized.

This invention relates to a method and system of e-commerce through the consumer registering the businesses number name. A system and method to achievement e-commerce transactions In a public network through Member Name, including,at least terminal devices for consumer, commercial tenants pay device, the card issuing bank payment gateway devices, payment platform devices and the third party logistics unit. Its property is through bundling with the establishment of the card issuing bank payment gateway Member name and their bank cards card number, when consumers apply for e-commerce transactions to the business community, need not submit personal information of bank cards will be able to activate the e-commerce transactions logic, the logic coverage of the state of e-commerce transactions, through unbundling transactions steps to improve the authenticity of transactions, reliability, safety; passage of this invention, consumers can break through the traditional limitations of electronic commerce terminal devices, more convenient, flexible in e-commerce, without worrying about their bank cards leaked confidential information, while businesses can be more convenient and credible conduct of e-commerce; card-issuing banks can develop electronic commerce based on depay without changing existing business processes.

Embodiments of the invention provide a panoramic selfie taking method and a mobile terminal, which are applied to mobile terminals comprising cameras and flexible screens. The method comprises: receiving a panoramic selfie taking command input by a mobile terminal user; controlling a flexible screen to axially rotate, and controlling a camera to continuously acquire each frame image; detecting whether preset shooting finish conditions are met; when the preset shooting finish conditions are met, finishing the rotation of the flexible screen and the image acquisition of the camera; and based on the acquired each frame image, performing image splicing, thereby generating a panoramic selfie. According to the panoramic selfie taking method provided by the embodiments of the invention, the mobile terminal only needs to rotate for a relatively smaller angle, and then can acquire one panoramic selfie.

Disclosed is a fiber reinforcement compound material reinforced concrete pile. The structure thereof comprises the following compositions: the fiber reinforcement compound material (FRP) reinforced concrete pile which is composed of a base body material and reinforcements; the base body material, which adopts the current various concrete; a reinforcement compound material (FRP), which adopts one of a plurality of the materials of carbon fibers, aramid fibers, glass fibers, PBO organic fibers, boron fibers, ceramic fibers, high-tenacity polyethylene fibers, basalt fibers and hybrid fibers; the FRP material used in the FRP concrete pile adopts bar stock, sheet material, section material, sandwich plate, honeycomb plate and grid material; the sectional shape adopts a round, rectangular or an irregular shape; the surface is smooth, with various uneven patterns; the FRP concrete pile is manufactured through a cast-in-situ method, and the prefabrication method can be also adopted; the reinforcement material connection adopts bundling with durable fiber material, bonding with durable colloidal material, or durable bolts; pre-stress can be exerted to the FRP reinforcement material in the reinforcement compound material (FRP) concrete pile.

The invention provides a cloud-computing-based HTML5 application packaging, installation, unloading and operation method and system. The system comprises a server and a plurality of clients, wherein interaction can be conducted between the clients and the server. Each client comprises a transceiver, a procedure file uploading module, an application configuration module, an application calling module, a procedure file loading module, a control creation module, an API interface module and an API and operation space set module. The server comprises a communication interface, a data center, a client code storage module, an application package analysis module, an application package creation module and a user identification module. The system has the functions of creating application packages, installing applications to a remote server, uploading the applications on the remote server, loading and applying the applications on the clients and closing the applications running on the clients. By means of the cloud-computing-based HTML5 application packaging, installation, unloading and operation method and system, users can install the applications to the remote server, the applications can be loaded to the local server to be run when in use, the local space is saved, and the applications are available at any place after being installed once.

The invention discloses a test paper making and automatic test paper marking system and method. The system comprises a question bank, a test paper making platform and an automatic test paper marking machine. Through the system, test paper making and automatic test paper marking are combined into a whole so as to solve the problem that test paper information needs to be identified under a situationthat automatic test paper marking is independently carried out. The system comprehensively applies the following technologies of question feature labeling, graph code marking, image scanning processing, handwriting identification, image printing and the like. The automatic test paper marking without answer sheets is realized, a test paper marking trace is left on the test paper, wrong questions on the test paper of a student are subjected to automatic statistics, a knowledge point mastering situation is subjected to statistics, and therefore, teachers can carry out collection, analysis and feedback on the basis of the examination data of students so as to provide targeted teaching.

Disclosed are a building structure and a construction method. The building structure comprises upright columns, prefabricated plates or prefabricated frames and columnar connecting parts. Each prefabricated plate or prefabricated frame comprises reinforced beams or section crossbeams and embedded connecting parts, wherein the reinforced beams or section crossbeams are embedded in the prefabricated plates or prefabricated frames, and the embedded connecting parts are arranged at connecting joints for connecting the reinforced beams or section crossbeams; the columnar connecting parts are mounted at connecting joints of the prefabricated plates or prefabricated frames; the number of the columnar connecting parts is smaller than or equal to that of the embedded connecting parts; each embedded connecting part comprises a first positioning mechanism; each columnar connecting part comprises one to four second positioning mechanisms matching with the corresponding first positioning mechanisms in a one-to-one correspondence manner; and the first positioning mechanisms and the corresponding second positioning mechanisms are vertically connected in an inserted manner, and the columnar connecting parts are fixed with the one to four embedded connecting parts at the connecting joints. The building structure and the construction method have the advantages that various portions of the building structure can be mechanically assembled and disassembled, can be reused, and are convenient in assembly and disassembly, and the connecting joints are firm and reliable in connection and fine in load-carrying capability.

The invention discloses a rotary stamping compressed rotor plane cascade experimental system comprising an air supply system, a wind tunnel barrel, a Laval nozzle, a plane cascade experimental section, and an experimental test and data acquisition system. The plane cascade experimental section is composed of an upper cover plate, a lower end wall, a lower support plate, partition plates, a compression surface, a throat, a pressure expansion surface, a throttle valve, a throttle valve motor, a throttle valve frequency converter, and a rotatable platform. The plane cascade experimental section is provided with an odd number of air inlet flow paths which are partitioned by an even number of partition plates. The Laval nozzle is arranged before the plane cascade experimental section, high supersonic flow is achieved with low cost and low technical difficulty, and the inlet flow Mach number can be adjusted by replacing the Laval nozzle, so that rotary stamping compressed rotor plane cascade experimental study under different flow Mach numbers is realized. Moreover, rotary stamping compressed rotor plane cascade experimental study under different back pressures, different flow angles of attack and different partition top gaps can be carried out.

The invention relates to using a mouse able to generate human IgGl heavy chain- k light chain to prepare humanized monoclonal antibody and its application. The characteristic: respectively knocking in huma k-chain and gl-chain constant gene at the sites of gene in mouse k- light chain constant region and heavy chain gl constant region; the humanized monoclonal antibody: the constant region is fully the same as that of human antibody and the variable region is mouse sourece, and the preparing steps: obtaining mouse k-chain and gl-chain gene groups; constructing a knoncking-in carrier; making homologous recombination in ES cell; producing the mouse with light-heave conversion; further mating to obtain a mouse with complete chimeric gene; the application: taking spleen and marrow cells of an immunized chemeric mouse to make fusion and culture; screening hybridomas of humanized monoclonal antibody generating antigenic specificity; preparing the humanized monoclonal antibody with antigenic specificity. The advantages is easy to obtain high-affinity human-mouse chimeric antibody.

The invention relates to a method for configuring a product multi-BOM tree based on base products, which is characterized by comprising the following steps of: establishment of a unified material library, a base product library and a product multi-BOM tree configurator; and selection of a base product design BOM and configuration of the product multi-BOM tree, which comprises the following processes of: decomposing client product feature attributes downwards; searching substituted and newly added materials; configuring first-layer materials of the product design BOM tree; finely adjusting the materials in the product BOM tree; and configuring the client product multi-BOM tree. The method has the obvious advantages of intuitively configuring the logic subordinate relationships among parts in the product at different stages of the life cycle, contributing to product information management, reducing the difficulty and workload of maintaining the consistency of information of the parts among different BOM tree structures and ensuring the effectiveness of data of each BOM tree structure of the product. The product multi-BOM tree configurator can be independently used and also can be embedded into a CAD / CAPP / PDM / ERP system.

The invention provides a redundancy backup method and system of a production server. The redundancy backup system comprises a production server, a standby server, an optical fiber switchboard and a concentrated storage device, wherein the production server is connected with the concentrated storage device through the optical fiber switchboard, the standby server is connected with the concentrated storage device through the optical fiber switchboard; the production server comprises an operating system storage unit, an environment configuration storage unit, a concentrated storage device scheduling unit and a bus adapter unit; the standby server comprises an operating system backup unit, an environment configuration backup unit, a concentrated storage unit identifying / switching unit and a bus adapter unit; the optical fiber switchboard comprises a mapping relationship storage unit and a concentrated storage device access unit; and the concentrated storage device comprises a database storage unit, a middleware storage unit, an application software storage unit and a service data storage unit. According to the invention, the problem of rapid adaption of the standby server to the failed production server is solved.

The invention relates to a graphite material for a monocrystalline silicon growth thermal field in a solar photovoltaic industry. In the graphite material, an aggregate is calcined petroleum coke, wherein the true density of the calcined petroleum coke is more than or equal to 2.1g / cm <3>, and the ash content of the calcined petroleum coke is less than or equal to 0.3%; a binder is medium temperature pitch, wherein the softening point of the medium temperature pitch is 83-86 DEG C, and the coking value of the medium temperature pitch is more than or equal to 49%; and the volume density of the graphite material is larger than or equal to 1.80g / cm<3>, the resistivity of the graphite material is less than or equal to 7.0 mu omega m, the compression strength of the graphite material is larger than or equal to 38Mpa, the rupture strength of the graphite material is more than or equal to 18Mpa, the porosity of the graphite material is less than or equal to 14%, the ash content of the graphite material is less than or equal to 0.2%, and the thermal expansion coefficient of the graphite material is less than or equal to 2*10<-6> / DEG C. The preparation method of the graphite material comprises the following steps: smashing raw materials, sieving, burdening, kneading, molding, primarily roasting, secondarily roasting, secondarily dipping, and thirdly roasting; and graphitizing, thus obtaining a finished product.

The invention discloses a two-dimension code user registration certification system and a method of the two-dimension code user registration certification system. The system is characterized in that a mobile terminal shoots a two-dimension code and obtains a service provider ID in the two-dimension code, and the mobile terminal sends a registration certification request containing the service provider ID and the mobile terminal number to a registration certification array server; an application server extracts and analyzes the registration certification request from the request array of the registration certification array server, and verifies whether the mobile terminal number is registered as a registered user corresponding to the service provider ID; if not, registering the mobile terminal number as the registered user corresponding to the service provider ID; and if so, activating a corresponding service provider client to execute member service functions on the registered user. According to the invention, the user registration and user certification operations are finished by the flexible and easy manner with high experience of shooting the two-dimension code, thereby being convenient for the user to register as a member and enjoy the member service.

The invention provides an LED (Light Emitting Diode) indoor positioning navigation method and a positioning navigation system. An LED lamp serves as an emitting terminal; an emitting terminal driving device is used for controlling the strength of current so as to cause the change of brightness of the light and transfer the physical position data; the data frame with clear hierarchy of code element information is designed; zero bit filling is introduced into the sending and receiving of the data frame, so as to realize the transparent transmission and distinguish the frame header, the verifying code of the physical position information and the frame tail; the frame header has a specific coding sequence and can be detected, so that the validity of the data frame can be judged; the frame length of data frame can be analyzed; the invalid data frame can be timely detected and abandoned; different sizes of LED lamp sets with grid unit topology network structures can be designed according to different illuminating areas; only one of the LED lamps of a positioning unit is used for emitting the data frame at each time slot, and meanwhile, the other LED lamps all emit equidistant full zero data frames; the inter-symbol interference and the background noise are extremely reduced; the safety and reliability of the data frame are ensured.

The invention discloses a method for directly positioning a ground target by self-checking POS. The method comprises the steps of: according to the ultimate principle of directly positioning ground target, deducing a theory relationship between an error in an image exterior orientation element and an error in a target point measurement, building a POS system error compensation module, guiding the module into a space intersection rigor formula based on a collinear condition, building a strict error compensation module for self-checking POS directly positioning ground target, and then solving a three-dimensional ground coordinate of an additional parameter and a point to be fixed according to the least squares error compensation principle so as to directly position ground target by self-checking POS having the additional parameter. The precision for directly positioning ground target by self-checking POS meets the demand of measuring the detail point of aerial survey topography mapping, avoids building a specific checking field to check required by using the POS system, decreases the technical difficulty of aerial photograph, saves the measuring cost of aerial photograph and provides a method for decreasing the vertical parallax for rebuilding a three-dimensional model.

The invention relates to a truck combination hinge angle measuring and controlling system, which mainly consists of a truck combination hinge angle measuring portion and a hinge angle controlling portion and particularly comprises a GPS (global positioning system) tester, input equipment, a microprocessor, a steering wheel rotation angle sensor, a driving front-wheel steering controller, an executing mechanism and power supply equipment. The GPS tester, the input equipment and the steering wheel rotation angle sensor are respectively connected with the microprocessor, the steering wheel rotation angle sensor is connected with a steering wheel of the truck combination, the microprocessor is connected with the driving front-wheel steering controller which is connected with the executing mechanism, the executing mechanism is connected with a truck combination steering mechanism, and the power supply equipment supplies power for the integral system. By the truck combination hinge angle measuring and controlling system, truck combination hinge angle can be measured accurately, steering harmony and running stability of the truck combination during insufficient steering and over-steering can be effectively controlled by the truck combination hinge angle measuring and controlling system utilizing the hinge angle as control variable.