226results about How to "Strong guidance" patented technology

A super-large-effective-area (SLA) optical fiber that is suitable for communicating over a wide wavelength range and that, because of its large effective area, suppresses nonlinear effects that typically result from interaction between signal channels. The effective area, Aeff, of the SLA fiber of the present invention preferably is equal to or greater than approximately 80 μm2 at a wavelength window around 1310 nm. The cutoff wavelength of the SLA fiber of the present invention preferably is less than 1310 nm. Thus, the SLA fiber of the present invention has a very large effective area and a very low cutoff wavelength. In accordance with the present invention, a variety of SLA fibers are provided that all have very large effective areas and desirable transmission properties. The large effective areas of the SLA fibers of the present invention enable nonlinear effects to be suppressed, as well as Stimulated Brillouin Scattering in analog transmission. The large effective areas also enable attenuation to be reduced. The result of suppressing nonlinear effects and reducing attenuation enable signals to be transmitted over long distances and over a broad bandwidth.

The invention discloses a testing method of the shearing resistance between a sealing gum and a stuck sample interface of a stuck base material, which manufactures the stuck base material into two samples, and a cavity with specified size is reserved in the middle for injecting the sealing gum, thus integrating the stuck base material and the sealing gum into a whole stuck sample which is placed in the environment with the temperature of 20 DEG C minus or plus 2 DEG C and the relative humidity of 65 percent minus or plus 5 percent for being conserved for 28 days, and the samples are respectively placed into an upper shearing box and a lower shearing box, positive pressure P1 is exerted on an upper part, and horizontal force P2 is exerted simultaneously. The shearing force exerted on the samples is measured by a dynamic meter 5. The shearing force P2 is exerted with specified loading rate, and until a shearing surface between the stuck base material and the sealing gum is destroyed, and the largest force measured by the dynamic meter 5 is the shearing resistant force. The value obtained by dividing the shearing resistant force by the area of the stuck sample interface is the shearing resistance between the bonding interfaces of the stuck base material and the sealing gum under the positive pressure P1. The testing method of the shearing resistance between the sealing gum and the stuck sample interface of the stuck base material has simple operation, convenient use and favorable popularization, has no need of new additional equipments, and has strong guidance to specific industrial practices.

The invention relates to a method for cultivating seedlings of oil peonies, and belongs to the field of agricultural seedling cultivation. The method comprises the following steps: selecting a nursery; performing weeding in advance; performing deep ploughing and tedding; performing soil preparation and making furrow ridges; harvesting seeds; processing the harvested seeds; sorting the processed seeds; processing the sorted seeds before cultivation; sowing the processed seeds; managing seedlings; managing nursery stocks. The characteristics of soil are changed by the method of combining farm manure with a chemical fertilizer. The seeds for sowing are harvested at the best harvesting time; the seeds to be cultivated are processed by gibberellin, ethyl alcohol, sodium p(dimethylamino) benzenediazo sulfonate solution, carbendazim and plant ash, and a culture solution is generated during the cultivation of onions, so that the seed dormancy is broken, the germinating time is advanced, and the germination rate is increased. Diseases are prevented during cultivation, and different medicaments are sprayed in different seasons so as to prevent diseases, so that the seedling survival percent is increased. After being cultivated by the method disclosed by the invention, the nursery stocks are thick in plants, the seedling survival percent is high, the quality is greatly improved, after the nursery stocks are planted, the seed setting rate is high, and the nursery stocks cultivated by the method disclosed by the invention are good varieties for the oil peonies.

The invention discloses batch calibration equipment and a batch calibration method for intelligent pointer-type pressure gages. The batch calibration equipment comprises a horizontal calibration platform, a horizontal testing pipe, a plurality of quick connectors for being installed on a plurality of calibration pressure meters respectively, two image acquisition devices which are located in front of the horizontal calibration platform, an image processing device, a pressurization device and a pressure regulation device which regulates pressure in the horizontal testing pipe. The batch calibration method comprises the following steps of: firstly, doing a preparation work before calibration; secondly, inputting and matching models of the pressure gages to be calibrated; thirdly, obtaining data of dial plate templates; fourth, acquiring and dividing images of dial plates, and detecting straight lines at which pointers are located; fifth, matching the templates; sixth, obtaining numberical reading of the pressure meters, and the numberical reading obtaining process comprises the following steps of: obtaining dial plate image information to be processed, matching binocular stereo-vision images and processing the data. The batch calibration equipment disclosed by the invention is reasonable in design, simple and convenient in use and operation, has a good use effect, and calibration efficiency and calibration accuracy of the pointer-type pressure gages are greatly improved.

The invention relates to a shield tunnel excavation surface stability centrifuge model test matching apparatus. The apparatus comprises a model case, and a model tunnel, a rigid tunnel support surface, a power assembly, a transmission assembly and a data acquisition assembly are arranged in the model case, wherein the model tunnel is positioned in the model case, and the outside of the model tunnel is filled with test foundation soil; the rigid tunnel support surface is arranged at the top in the model tunnel; the power assembly is arranged at the outside of the model tunnel; the transmission assembly is arranged in the model tunnel and is connected with the power assembly and the rigid tunnel support surface; the data acquisition assembly comprises a force transducer, an LVDT displacement meter and a soil pressure gauge; the power assembly provides power for the rigid tunnel support surface through the transmission assembly, and drives the rigid tunnel support surface to move to control the displacement of the rigid tunnel support surface and stimulate the instability process of tunnel excavation surface soil, and the data acquisition assembly synchronously acquires data. Compared with apparatuses in the prior art, the apparatus provided by the invention has the advantages of simple structure, use convenience, stable and sensitive running, and wide application range.

The invention provides a paleo-water-depth quantitative calculation method aiming at lake facies deposition. The method comprises: a step 1, screening out lakes similar to a researched region; a step 2, aiming at the lakes screened out, establishing a quantitative relation between a lakebed deposit and a water body depth; a step 3, aiming at the researched region, carrying out a mudstone TOC test, and carrying out statistics on the formation thickness of target layers; a step 4, establishing a quantitative relation between paleo-water-depth data and the formation thickness; and a step 5, drawing a paleo-water-depth planar distribution graph. By adopting the paleo-water-depth quantitative calculation method aiming at the lacustrine deposition, the paleo-water-depth recovery means is further improved, and a new research idea and technical means are provided for the paleo-lake deposition evolution process research and the prediction of multi-type lake facies sand bodies.

The invention introduces a feeder fault handling method, which comprises the following steps of: 1) conducting online search and locating a feeder fault; 2) conducting network topology analysis to draw a conclusion; 3) finding out the section of the fault; 4) searching for the boundary switch of the fault section and making a fault isolation plan; 5) defining non-fault power outage areas; 6) making power supply restoration plans for outage areas on the upstream side and the downstream side of the fault; 7) conducting safety evaluation to the downstream power supply restoration plan; and 8) executing the plans according to the safety evaluation obtained at the step 7. The feeder fault handling method has the advantages that: 1) the method is suitable for the automatic construction of feeders of a power distribution network which is wired in any way; 2) the practicability is high, the impedance parameters of the equipment of the distribution network are not required and the power flow calculation module is not required to be called; and 3) the power supply restoration can be separately conducted to the non-fault sections, so as to reduce the power outage range and decrease the poweroutage duration as much as possible.

The invention discloses a method for determining full-field-of-view apparent spectral radiance of a satellite-borne optical remote sensor. The method comprises the steps that firstly, an optical remote sensing satellite observation model and a scene are simulated, a satellite remote sensor model, an observation object, a satellite orbit and an attitude parameter are set, and the scene is restrained; secondly, an optical remote sensing satellite full-field-of-view observation parameter is calculated; finally, the optical remote sensing satellite full-field-of-view apparent spectral radiance is determined. According to the method, determination of the apparent spectral radiance received by the remote sensor is based on a radiation transfer theory, and simulation is conducted on the whole radiation transfer link including the earth, a ground object target, the background characteristics, the atmospheric conditions and the satellite-borne optical remote sensor according to the operating characteristics of a satellite platform and the remote sensor; the apparent spectral radiance received by the view field positions corresponding to pixels at different positions of the focal plane of the remote sensor is determined according to the pixels one by one through radiation transfer model software.

The invention provides a bidirectional slip-type physical model box for simulating a cross-fault tunnel, which comprises a support frame, a loading hopper, a guide rail, a slider and a bidirectional power system. The loading hopper comprises a fixed hopper and a movable hopper. With the cooperation of the movable hopper with the slider, the guide rail and the bidirectional power system, the movable hopper can move horizontally and longitudinally at the same time, simulation of composite dislocation movement is realized, the actual project condition can be restored more truly, and the accuracyof the research on the mechanical behavior characteristics of the cross-fault tunnel is improved. On the basis of the bidirectional slip-type physical model box, the invention also provides a cross-fault tunnel mechanical behavior testing method.

The invention discloses a method for testing interface impervious strength of the sample bonded by sealant and concrete. The method comprises: reserving a seam cavity of a certain size in the middle of the concrete bonded sample, filling in sealant to bond the concrete and the sealant into an integral body to obtain a truncated cone shaped bonded impervious sample; placing the bonded impervious sample on the permeability instrument; increasing the water pressure of the impervious instrument at regular intervals for 0.1MPa each time from 0.1MPa until water seeps from the sample surface; and determining the previous water pressure as the impervious strength of the interface of concrete and sealant. The invention achieves the advantages of simple operation, unique and convenient using, need not adding other equipments, is convenient for popularization; it can detect the impervious strength of any composite material structure, has good instructiveness to engineering practice, is especially suitable for detecting the impervious strength of concrete construction seam and expansion joint such as simulated reservoir dam surface, channel expansion joint, aqueduct expansion joint and pipeline expansion joint, achieves great practical engineering value.

The invention discloses a grain mass and heat transfer and condensation parameter detection device and method. The grain mass and heat transfer and condensation parameter detection device comprises acuboid simulation experiment bin, wherein each wall surface of the simulation experiment bin is of an inner layer-outer layer structure, and the inner layers of the wall surfaces define a cuboid cavity; the two opposite bin walls of the simulation experiment bin are connected with a cold source and a heat source respectively; a plurality of sampling ports and wall surface temperature detection ports are arranged on the cold and hot wall surfaces of the simulation experiment bin separately; and a cube of an external heating source can be placed in the center of the inner cavity. The detection device and method can be used for detecting the grain damp heat transfer rule and the condensation critical parameter and disclosing a coupling relation of the mass and heat transfer phenomenon of thegrain pile and micro-environment factors, and has important significance for guiding and improving the grain storage conditions, preventing condensation and reducing grain loss.

The invention discloses a community population security surveillance system and relates to the technical field of security and protection systems. The community population security surveillance system comprises a plurality of district security and protection nodes and a community central monitoring point respectively connected with the district security and protection nodes, wherein, the district security and protection nodes comprise district gate control nodes and cell gate access control systems, the cell gate access control systems and the district gate control nodes form a local area network, and each district gate control node comprises a switchboard receiving information of the access control systems, and a transceiver, an information reader-writer and a camera respectively connected with the switchboard. The system provided in the invention can monitor access situation of floating population in all the districts and discards the conventional management mode that considerable manpower and material resources are employed for extensive patrol, which enables manpower and material resources to be saved and targeted monitoring and arresting to be realized, thereby improving case handling efficiency.

The invention relates to a hazardous chemical substance transportation safety risk prevention and control system and method. The system comprises an original data acquisition module used for periodically acquiring the data including the enterprise operation safety, the production safety, the employee quality and the vehicle conditions; a data preprocessing module which is used for preprocessing; an evaluation index calculation module which is used for calculating the magnitude of each evaluation index according to the constructed comprehensive evaluation index system; an evaluation model generation module which is used for constructing a safety risk evaluation model according to the evaluation indexes; and a system auxiliary decision module which is used for generating an enterprise security risk assessment result according to the management target and the actual requirement based on the result obtained by the model and generating a security risk assessment report with a fixed format. Compared with the prior art, the hazardous chemical substance transportation safety level can be further improved, and the objective basis is provided for the supervision of the departments, the leakage detection and deficiency filling of the enterprises, timely taking the improvement measures and preventing the accidents.

The invention discloses a weldable aluminum alloy plate for a railway motor train unit with the speed of 200km per hour and a manufacturing method and relates to an aluminum alloy plate and the manufacturing method thereof. The invention aims at solving the problems of heavy car body and high cost caused by the use of stainless steel plates in the railway motor train unit with the speed of 200km per hour currently. The plate comprises the following compositions by weight percent: 0.30% of Si, 0.35% of Fe, 0.20% of Cu, 0.20-0.70% of Mn, 1.00-2.00% of Mg, 0.30% of Cr, 4.00-5.00% of Zn, 0.20% of Ti, 0.25% of Zr, 0.10% of V and the balance of Al. The method comprises the following steps: setting the solid-melting treatment temperature between 468 and 472 DEG C; pre-stretching a thick plate for 60 to 90 minutes, and cold quenching in the water with the temperature below 34 DEG C. The plate has a tensile strength not smaller than 315N / mm<2>, a disproportionate extension strength not smaller than 195N / mm<2>, a simple process and a high qualified rate of products.

The invention relates to a method for detecting an irregular circle based on Gauss pyramid decomposition. The existing circle detecting algorithm has the defects of error detection and omission detection in a high resolution ratio and multi-circle detection environment. The method comprises the following steps: aiming at a circle target in a digital image, decomposing an image into images with different resolution factors through a Gauss pyramid decomposition method; aiming at different levels of resolution factors, carrying out rough detection on an image with a lower resolution factor by using a detection method of different circles; and then carrying out precise circle detection on an image with a higher resolution factor, wherein in each detection step, a specific setting method is given for a corresponding threshold. By utilizing the method, the detection precision of irregular circle is improved and high-noise and multi-circle complicated images can be analyzed.

The invention discloses an evaluation method of the carbonatite reservoir volume acid fracturing flow guiding capacity and belongs to the technical field of exploration and development of oil and gas.An artificial joint forming device is adopted to conduct joint cutting and transverse slipping on a carbonatite rock board, and an upper rock board body and a lower rock board body with cracks are obtained; a first flow guiding capacity test is conducted, and the value of the first flow guiding capacity is obtained; acid liquid is injected between the upper rock board body and the lower rock board body, a second flow guiding capacity test is conducted, and the value of the second flow guiding capacity is obtained; the values of the first flow guiding capacity and the second flow guiding capacity are compared, and thus the increased degree of the flow guiding capacity after acid injection can be known; the crack forming mode of the test rock board accords with the actual stratum situationbetter, and thus the evaluation method of the carbonatite reservoir volume acid fracturing flow guiding capacity can provide scientific guidance for actual carbonatite reservoir volume acid fracturingconstruction parameter optimization, acid liquid system preferable selection and process optimization; and meanwhile the evaluation method is easy to operate, high in guidance and wide in applicationrange.

The invention discloses a method of preparing a tobacco sheet with the agilawood characteristic, and belongs to the technical field of cigarette production. The method comprises the following steps that a, raw agilawood is smashed and screened by a 60-mesh sieve, 5 times of 50% alcohol according to weight percentage is added to the smashed raw agilawood, and subjected to hot reflux extraction at 60-70 DEG C for 3-4h, and an extractive is filtered and concentrated to form an extract; b, residues after filtering are subjected to fine grinding to reach 10-40 DEG SR; c, 0.1-10wt% of the agilawood meeting the beating degree is added to tobacco sheet paper pulp, and mixed uniformly to form tobacco sheet pulp, and the required sheet is produced by a tobacco sheet papermaking method; and d, the extracted agilawood extract serves as a coating material, and added to the prepared tobacco sheet at 1-5wt%. The method has the advantages that the tobacco cigarette sheet serves as a carrier, and the sheet containing agilawood fibers and the extractive is added to a cigarette formula according to different proportions, so that the requirements of new cigarette product development and consumers are met, and the method has a better guiding function in reasonable agilawood development and production.

The invention relates to a method for compiling a paleogeologic map of carbonate rock strata based on the sequence stratigraphy, which comprises the steps of performing division calibration on sequence strata on the basis of basic data information, building carbonate connected well profile sequence stratigraphic framework and spatial sequence stratigraphic framework, analyzing the mutual superimposition relation of different strata on the profile and spatial development characteristics and distribution rules, specifying the mode and sequence structure of rhythmic strata of carbonate rocks, anddelimiting the structural boundary and range; taking a stratum thickness map as a base map, drawing stratum boundaries corresponding to different sequence stratigraphic interfaces according to the stratigraphic superimposition relation from old to new; and then correcting the stratigraphic boundaries according to the special geological phenomenon interpreted by the existing data, supplementing map elements and thus completing the drawing of the paleogeologic map. The method not only can ensure the accuracy of geological information, but also can guide the actual exploration and development more effectively, thus reducing the risk of exploration and development, and reducing the cost input of th exploration and development.

The invention discloses a method for selecting particle size distribution ranges and the filling amount ratio of heat-conducting silica gel thermal interface material powder filler. The method comprises the following steps of 1, selecting several types of heat-conducting powder filler different in particle size distribution range; 2, selecting the particle size distribution ranges and the filling amount ratio of the heat-conducting powder filler different in particle size distribution range; 3, adding the heat-conducting filler different in particle size distribution range into a silicone rubber base body in sequence from large particle size to small particle size according to the determined filling amount ratio, and conducting uniform mixing by mechanical manners such as stirring or smelting or banburying, so that a heat-conducting powder filler and silicone rubber mixture is obtained; and 4, further improving density of the silicone rubber mixture through a physical vibration method. The method for theoretically researching the filling amount ratio of the heat-conducting powder filler different in particle size distribution range is mainly provided. By means of the research method, a silicone rubber thermal interface material which is high in powder filler stacking density, high in heat conductivity coefficient and stable in performance can be prepared. The method has great theoretical instruction significance for selection of types and particle sizes of the powder filler and optimization of the filling amount of the heat-conducting powder filler different in particle size distribution range.

The invention discloses a road vehicle running danger state early warning method and system under a strong lateral wind effect, and belongs to the field of traffic safety. The invention aims at designing an effective road vehicle running danger state early warning system. When a vehicle runs in the strong lateral wind environment, the lateral wind acting force and the force moment are accurately estimated, the running danger state due to the lateral wind effect is predicted in time, and in addition, the warning is given to a driver in advance. On the basis of a Kallman filtering algorithm, the estimation method of the strong lateral wind on the vehicle acting force and the force moment is provided, a danger state evaluation index system of the road vehicle under the strong lateral wind effect is built from the restriction of the pavement attaching coefficient on the vehicle running, a four-stage warning mode is adopted, and the road vehicle running danger state early warning system under the strong lateral wind effect is designed. The road vehicle running danger state early warning method has the advantages that the running safety of the road vehicle under the strong lateral wind effect can be sufficiently ensured, and the system has the advantages of high reliability, high precision and the like.

The invention relates to an aeronautical equipment repair assistance system based on hybrid reality and a method for using the same. By using a head-mounted hybrid reality device to build a repair assistance system, and the system includes a login management identity authentication module for login authentication, a holographic three-dimensional model display module for demonstration, an image, audio and video presentation module used to explain the operation, a holographic three-dimensional animation superimposing display module for superimposing a reality and a virtual scene, a gesture recognition interaction processing module and a speech recognition interaction processing module for gesture interaction and speech interaction, a two-dimensional code and image recognition module for scanning and matching database feature information, and an operation record module for uploading and saving maintenance records. The invention has the advantages of simple operation, easy access to maintenance personnel, updating maintenance data, intuitively displaying maintenance operation, recording maintenance process in detail, facilitating enterprise traceability management, and greatly improving maintenance efficiency of aeronautical equipment.

The invention discloses a method for utilizing thin-layer interference amplitude recovery to identify an oil and gas reservoir. The method comprises a step of: 1) establishing wave impedance models of a reservoir under different conditions, carrying out forward modeling, and finding out the relation between an event time thickness and an amplitude value; 2) tracking a seismic reflection event which can best reflect the target reservoir, and extracting a horizon amplitude plane graph, superposing the horizon amplitude plane graph with a construction drawing, and identifying a target trap; 3) tracking two up-down adjacent seismic reflection events in the target trap; 4) according to three obtained seismic interpretation horizons, calculating the event time thickness; 5) according to the relation between the event time thickness and the amplitude value, obtaining a seismic amplitude plane graph; and 6) subtracting the seismic amplitude plane graph obtained in the step 5) from the seismic amplitude plane graph obtained in the step 2), obtaining an amplitude attribute map after amplitude recovery, and judging whether the target trap contains the oil and gas reservoir on the map. By adopting the method, the interference of the reservoir thickness to the oil and gas reservoir identification is effectively reduced, and the oil and gas reservoir can be identified more effectively.

A comprehensive sensory quality evaluation method for tea leaves is characterized by using two different tea sample processing methods for evaluation. In the first round, a steeping method is carried out to evaluate whether the tea leaves have defects or not; and in the second round, a brewing method is carried out to evaluate characteristic items. The method includes the steps of: 1) in the first round, steeping the tea and evaluating the tea; 2) in the second round, brewing the tea and evaluating the tea, and scoring the tea; and 3) scoring and ranking tea leaves, wherein comprehensive score is calculated, if Y > 7, the tea leaf is high-grade, if 4 < Y <= 7, the tea leaf is medium-grade, and if Y <= 4, the tea leaf is low-grade. The method can relatively comprehensively evaluate the sensory quality and characters of the tea leaves and is suitable for evaluating commercial property of finished tea. The evaluation method uses a part of evaluation methods of tea leaf sensory evaluation in national standard, and meanwhile, with a food flavor analysis method, the tea products are comprehensively analyzed according to drinking manners of the tea by consumers and internal taste layer change of brewed tea leaves, real quality status of the tea products is reflected more objectively.

The invention relates to a method for the pre-installation construction of the oven protection equipment of a coke oven, in particular to a method for the computer simulation of the installation construction of the oven protection equipment of a coke oven, which comprises building an analysis module, a computing module, a structure design module and a drawing module, wherein the analysis module receives in-situ equipment test data input by a terminal user; the computing module computes the qualification rate of equipment data in sampling inspection; the structure design module has a built-in equipment general assembly and several sub assemblies formed by subdividing the entire oven protection equipment of the coke oven, and according to an assembly model selected by a user, and the system assigns acquired equipment dimension data values to the assemblies to obtain a three-dimensional entity and installation deviations between different sets of equipment and between equipment and a brickwork and simulate the installation process of the oven protection equipment to obtain a relative position of the equipment during installation; and the drawing module outputs the distribution condition of the installed entity and a model of the entity. The invention overcome the drawbacks, such as complex construction, long time consumption, and human, money and material resource waste, of the traditional assembly method.

The invention discloses a part-level simulation test piece design verification method based on finite element simulation analysis. According to the method, simplification is performed on the basis ofan original aircraft structure, the real structure of an aircraft examination part is reserved, and it is ensured that the stress deformation of a simulation test piece examination part and the stressdeformation of the aircraft original structure examination part are consistent, namely, the structural form, the load bearing characteristic, the manufacturing process and the sealing process of theexamination part are consistent with the aircraft structure. Meanwhile, other structures of the simulation test piece are simplified according to the original structural force transmission path and the main structural form of the aircraft, and it is ensured that the simulation test piece can simulate structural internal environment changes under various working conditions of the aircraft. Therefore, the reliability is high when the part-level simulation test piece is adopted to carry out the verification test.

The invention discloses a far-field noise measurement method of a high-speed train module in an acoustic wind tunnel. Three rows of microphones with adjustable heights are placed on the side face of the high-speed train module to measure the far-field noise of the high-speed train module. The measurement data is processed in the following steps of correcting effects of a vent cap of a far-field microphone; correcting air sound adsorption; and converting a sound pressure value of an actual measurement point in the wind tunnel into a measurement value of the position of the far-field microphone. Compared with the prior art, the beneficial effects of the measurement method are that based on precise measurement and correction of wind tunnel experiment data of the high-speed train module, real train results are deduced; in the development state of the high-speed train, an important guidance function is achieved for module de-noising design; and the measurement method is highly instructive and specific in the aspect of current train de-noising method evaluation.

The invention provides a power grid investment measurement and calculation method and system based on grey relational analysis and a medium, and the method comprises the steps: an alternative index set obtaining step: collecting external factors affecting the power demands from the aspects of macroeconomy, industrial structures and the output values of all industries, and forming the alternative index set; and a correlation degree analysis step: performing correlation degree analysis on the obtained alternative index set, and extracting an index which is greatly correlated with the annual income increasing electric quantity index of the company from the alternative index set as a key external influence factor. According to the invention, a gray correlation analysis method is adopted to extract key political and economic indexes of power grid investment; and power grid investment prediction is carried out by adopting multiple linear regression according to the extracted key factor quantitative indexes, so that decision errors caused by ignoring political economic and environmental changes only by virtue of a time sequence are avoided, and the proposed prediction method has very strong guidance and universality for different provincial companies.

The invention discloses an oncoming vehicle real-time detection-based control device for a tunnel lighting system. The control device comprises a vehicle flow detection module, a central master control module and a tunnel lighting section control module, wherein the vehicle flow detection module comprises a plurality of oncoming vehicle flow detection sub-modules which are continuously distributed at the upstream part of a tunnel entrance, in a tunnel and at a tunnel exit at equal intervals along a road and are used for obtaining flow values of vehicles which pass through various tunnel lighting sections and periodically transmitting the flow values to the central master control module at preset time; the central master control module is used for comparing the flow values of the vehicles on a plurality of adjacent and continuous tunnel lighting sections and then transmitting a corresponding lighting state control instruction to the tunnel lighting section control module; and the tunnel lighting section control module comprises a plurality of tunnel lighting sub-controllers which are connected with lighting lamps of the lighting sections in the tunnel respectively. The invention further discloses an oncoming vehicle real-time detection-based control method for the tunnel lighting system. The oncoming vehicle real-time detection-based control device has the advantages of high actual adaptability and high operability, energy is saved and the traffic safety can be ensured.

The invention provides a multi-node distributed field intensity test system and method based on Bluetooth communication. The test system comprises a distributed measuring unit and a terminal device having Bluetooth communication with the distributed measuring unit. The distributed measuring unit comprises N field intensity testers arranged at N test nodes respectively. Each field intensity tester is used for acquiring field intensity measurement data of the corresponding test node. The field intensity measurement data obtained by the N field intensity testers are gathered to a specified test node wirelessly and transmitted to the terminal device by the specified test node through Bluetooth communication. The terminal device is used for performing fitting processing on the measurement data and obtaining the field intensity spatial distribution state of an area to be tested. According to the test system and method, communication between all the electromagnetic field testers in the area and the remote terminal is achieved through a Bluetooth communication module, and the test system and method are easy and convenient to operate, reliable in communication and high in cost performance; electromagnetic field vector distribution of the area to be tested is obtained through a multi-point measurement and interpolation fitting mode, and thus data are complete, display is visualized, and the test system and method are convenient to use.

The invention discloses a blockchain traceability system based on the Internet of Things, and belongs to the block chain technology field. A blockchain server is provided with a processor; the processor is in data connection with a data acquisition module, an anti-counterfeiting traceability module, a data storage module and a traceability query module; and the data acquisition module is in data connection with a camera, an audio collector and input equipment. The anti-counterfeiting traceability module is in data connection with an intelligent monitoring subsystem, an information adding module and an anti-counterfeiting code generation module; and the blockchain traceability system based on the Internet of Things is convenient for people to pass through the identity label, feature information and related article information of a corresponding product are obtained, the recognition degree of people to products is enhanced, the product traceability system has high guidance to people, alloperation traces are recorded and reserved in the circulation process of the products, the transparency of product production and flow is objectively improved, the authenticity and reliability of traceability system data are guaranteed, and product traceability is more efficient and reliable.