Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

51results about How to "Reasonable detection" patented technology

Video abnormity detection method based on graph structure under multi-scale transformation

The invention discloses a video abnormity detection method based on a graph structure under multi-scale transformation. First of all, video abnormity detection is carried out by use of an optical flow feature, and spatial correlation scales of video abnormity association optical flow features in different scenes are different. Under the condition that the spatial correlation structure of the video abnormity association optical flow features is maintained, since the calculation efficiency of video abnormity detection can be effectively improved by reducing the quantity of the optical flow features, it is brought forward that a network graph structure of the optical flow features is constructed based on spatial correlation, by use of multi-scale transformation of the graph structure under correlation constraints, the quantity of the optical flow features in the video abnormity detection is effectively reduced, under the condition that the detection precision is slightly reduced, the calculation efficiency of a video abnormity detection algorithm can be substantially improved, and detection of event abnormities is more rapid and reasonable.
Owner:杭州软库科技有限公司

Real person verification method via videos

InactiveCN107944416AEfficient discriminationSolve the problem of fake facesSpoof detectionPattern recognitionIn vivo
The invention discloses a real person verification method via videos Videos are collected continuously, continuous video frames in a video stream are converted into single-channel images, the single-channel images are combined into one multi-channel image, a trained deep learning model is used to process the synthesized multi-channel image, depth characteristics are extracted, an in-vivo determination method is used to determine whether there is a real person in the image, and a determination result is output. Thus, the real person can be determined effectively. The in-vivo is detected onlinevia a deep learning manner, and the problem that the face is faked via a picture, video or 3D model can be solved effectively.
Owner:CHENGDU REMARK TECH CO LTD +1

Feeding mounting device of releaser

The invention discloses a feeding mounting device of a releaser. The feeding mounting device comprises a vertical tube seat vibration plate, an ejection rod vibration plate, a main workbench, a rotary table, a vertical tube seat rotating structure, an upper valve seat transfer assembly robot, an upper valve seat assembly fixing robot and a finished product taking robot, wherein an upper valve seat loading robot, a vertical tube seat loading robot, an ejection rod loading assembly robot and an upper valve seat initial assembly fixing robot are arranged on the main workbench; a plurality of temporary fixtures are arranged on the rotary table, and a vertical tube seat accommodating groove and an upper valve seat accommodating groove are formed in each temporary fixture; a first vertical through hole communicating with each vertical tube seat accommodating groove is formed in the lower end of the vertical tube seat accommodating groove, and a second vertical through hole communicating with each valve body accommodating groove is formed in the lower end of each upper valve seat accommodating groove; and the vertical tube seat rotating structure comprises a rotary clamp head, an assembly motor and an assembly cylinder. The feeding mounting device has the beneficial effects that the structure is reasonable, the releaser can be assembled effectively, the automation degree is high, the assembly efficiency is high, and the effect is good.
Owner:ZHEJIANG ORIENTX FIRE SAFETY EQUIP

Equipment and method for on-line determination of tobacco shred structures

The invention relates to tobacco processing technology and equipment, in particular to a method and equipment for the on-line determination of tobacco shred structures by a weighing method. In order to solve the technical problem, the invention provides the method and the equipment for the on-line determination of the tobacco shred structures, so the tobacco shred structures can be accurately detected on line in real time. In order to realize the goal, the equipment for the on-line determination of the tobacco shred structures provided by the invention mainly comprises a vibration sieve, an air pipe, a pneumatic turning plate, a tobacco powder collection pipe, a powder accumulating box, an electronic scale and a control processor, and a matched determination method is provided, stability, reliability, harmlessness, simplicity and convenience are realized, the operation is easy, and simultaneously, the accuracy is high.
Owner:CHINA TOBACCO JIANGSU INDAL

Meat product cooking doneness control method and meat product cooking equipment

InactiveCN107668107AAccurate donenessUniform maturityBaking ovenScattering properties measurementsEngineeringWavelength
The invention relates to a meat product cooking doneness control method and meat product cooking equipment. The meat product cooking doneness control method comprises the following steps of scanning meat products to be cooked waves of which the wave length is within a characteristic spectrum wave band, and according to the obtained spectral reflectance value, determining the doneness of the meat products; and according to the determined doneness, judging whether cooking needs to be performed or not, wherein the characteristic spectrum wave band lies in that spectral reflectance values of the meat products of different doneness under the same wave length are different, and the maximum difference of the spectral reflectance value is greater than or equal to 0.1; and besides, according to thewave length band, the spectral reflectance value and the doneness of the meat products are positively related. Compared with the prior art, the testing result is more accurate, and the doneness of the cooked meat products is more unified.
Owner:HENAN UNIV OF SCI & TECH

Sensory quality detection method of electronic cigarette liquid

The invention provides a sensory quality detection method of an electronic cigarette liquid. The sensory quality detection method specifically comprises the following steps: (1) setting 9 sensory quality detection indexes; (2) by adopting an overall cyclic smoke-panel-test method, smoking the electronic cigarette liquid by smoke-panel-test personnel; (3) comprehensively grading the sensory quality of the electronic cigarette liquid by the smoke-panel-test personnel in a manner of centesimal system grading; and (4) counting the sensory quality detection results of the smoke-panel-test personnel. According to the sensory quality detection method of the electronic cigarette liquid provided by the invention, the sensory quality of the electronic cigarette liquid is comprehensively graded on the basis of the sensory quality detection method of cigarettes and in combination with the specific sensory quality style of the electronic cigarette liquid, thus providing a technical guidance for further developing the electronic cigarette liquid of a tobacco extract, and meeting the smoking needs of consumers on electronic cigarettes.
Owner:CHINA TOBACCO GUIZHOU IND

Community detection method based on block chain social platform

The invention discloses a community detection method based on a block chain social platform, and the method comprises the following steps: 1, obtaining all user addresses and account transfer information of the user addresses on the block chain social platform, and building an account transfer relation digraph according to the account transfer relation among the user addresses; 2, finding out abnormal points and / or abnormal paths appearing in the transfer relation directed graph, and confirming abnormal user information with abnormal transfer behaviors according to the found abnormal points and / or abnormal paths; 3, acquiring operation information of all users on the block chain social platform; 4, performing clustering analysis on the acquired operation information according to the time dimension, and searching for outlier user information which is greatly different from the normal behavior mode; and 5, aggregating the abnormal user information and the outlier user information in a weighted summation manner to obtain non-real user information and / or user information with low activeness. The abnormal behavior of the user is effectively and reasonably detected so as to judge the authenticity and effectiveness of the user.
Owner:上海七印信息科技有限公司

Full-size performance evaluating system for SCR denitration catalyst

The invention discloses a full-size performance evaluating system for an SCR denitration catalyst. The full-size performance evaluating system for the SCR denitration catalyst is characterized by comprising a control system as well as a gas supply system, a water replenishing system, a SO3 generation system, a NO generation system, a gas distribution system, a heating system, a reacting system, ananalyzing system and a tail gas treatment system which are connected with the control system, the output end of the gas supply system is connected with the gas distributing system, the output end ofthe gas distributing system is connected with the heating system, the input end of the heating system is connected with the water replenishing system, the SO3 generation system and the NO generation system, the output end of the heating system is connected with a mixing system, a first input end of the reacting system is connected with the mixing system, a second input end of the reacting system is connected with the analyzing system, and the output end of the reacting system is connected with the tail gas treatment system. The selectivity and sulfur tolerance of the catalyst under various low-temperature smoke conditions can be tested in a simulated manner under the working condition of smoke. The full-size performance evaluating system for the SCR denitration catalyst is provided with the tail gas treatment system, therefore, polluted gas of the smoke can be treated effectively, and the environment is protected.
Owner:YANCHENG ENVIRONMENTAL ENG TECH RES & DEV CENT TSINGHUA UNIV

Method for determining chrominum content in edible gelatine

The invention discloses a method for measuring chromium content in edible gelatin. After the edible gelatin sample is digested by microwaves, it is detected by an inductively coupled plasma atomic emission spectrometer, thereby obtaining the chromium content in the edible gelatin sample. Compared with the prior art, the present invention adopts the combination of inductively coupled plasma atomic emission spectrometry and microwave digestion, which has the characteristics of high sensitivity, good precision, wide linear range and fast analysis speed, and provides a new method for the detection of heavy metals in candies. A convenient, fast, accurate and reasonable detection method can meet the needs of enterprises and inspection and testing units.
Owner:广东省潮州市质量计量监督检测所

Angle iron cross diagonal member stable bearing capacity test device and method

InactiveCN108627400AReasonable detectionAccurate and stable bearing capacity calculationMaterial strength using tensile/compressive forcesFlexural torsionalInstability
The invention discloses an angle iron cross diagonal member stable bearing capacity test device and relates to the field of power supply test devices. The test device comprises two fixed structures, afirst supporting main material, a second supporting main material, a tension and pressure measurement assembly, a horizontal hydraulic jack and an electronic displacement meter, wherein the two fixedstructures are separately arranged, the first supporting main material and the second supporting main material are respectively hinged to one fixed structure, the tension and pressure measurement assembly comprises a height-adjustable pressure sensor which is fixedly arranged and used for measuring pressure or tension of the hydraulic jack, the horizontal hydraulic jack is fixedly arranged, and the electronic displacement meter is used for measuring displacement of the ends, far from the fixed structure of the first supporting main material and the second supporting main material. The angle iron cross diagonal member stable bearing test device disclosed by the invention takes restraining action of torsion rigidity of the other rod to a target press rod into consideration; compared with anexisting test device, a device platform which can detect flexural-torsional instability load data of angle iron members more reasonably and can obtain more accurate stable bearing capacity calculation values is provided.
Owner:ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +1

Multifunctional elevator testing system with self-defined settings

The invention discloses a multifunctional elevator testing system with self-defined settings. The multifunctional elevator testing system comprises a plurality of signal generation modules, a plurality of function detection modules, a plurality of processing modules and a plurality of process editing modules, wherein the processing modules are correspondingly connected with the function detectionmodules and the signal generation modules; and a plurality of functional sub-processes corresponding to the function detection modules and / or the signal generation modules and controlling the operation of the function detection modules and / or the signal generation modules are arranged in the processing modules; the process editing modules are connected with the processing modules, the functional sub-processes can be selected and edited through process editing units, the selected functional sub-processes are sorted, and the processing modules execute in sequence according to sorting and controls the corresponding functional detection modules and / or the signal generation modules to operate to drive an elevator to operate and detect; and according to different elevators and under different conditions, users can self set the execution sequence of the functional sub-processes to detect elevator equipment quickly and reasonably.
Owner:G TECH CO LTD

Human face recognition system

The invention discloses a human face recognition system. The system comprises an on-site input module, a data input module, a microprocessor and an image acquisition module. The on-site input module comprises a photo storage module, a face scanning module, a feature storage module and a data adding module. The data input module includes an ID card recognition module, a networked reading module andan ID card photo storage module. The microprocessor is specifically composed of a power supply module, a backup power supply module, a camera monitoring module and a camera transmission module. The image acquisition module consists of an analysis comparison module and an alarm module. The design is reasonable and novel, facial photo input and ID card information input can be combined at the sametime, and meanwhile the accuracy of face recognition is high. The system has the advantages of achieving the effects of supplying backup power and recording surveillance videos and high practicabilityand is suitable for wide application and popularization.
Owner:嘉兴贝斯特电子技术有限公司

Raw water control system based on direct drinking machine and control method thereof

The invention discloses a raw water control system based on a direct drinking machine and a control method thereof. The problem that a raw water quality detection method is simple and prone to misjudgment is solved. According to the technical scheme, if water quality data S1 are P times greater than a memory reference value V, a control module controls a TDS detection module to carry out a couple of times of successive detection to acquire water quality data S2, and the water quality data S2 are stored into a storage module; the control module calls the water quality data S2 in the storage module and sequentially compares the water quality data S2 with the memory reference value V; and if the water quality data S2 are P times greater than the memory reference value V, the control module controls an alarm module to start to enter an alarm mode, otherwise a standby mode is started. According to the invention, the water quality in a raw water tank is reasonably detected; a user can acquire standard drinking water in a use process; if the raw water quality is wrong, an alarm is given to remind the user; and the maintenance of the user is convenient.
Owner:宁波帅风电器制造有限公司

A method and system detecting network performance based on cloud service

The invention relates to a method and system detecting network performance based on cloud service. The method comprises the steps of selecting a network performance parameter to be analyzed; measuring the network performance parameter to obtain a plurality of performance data; uploading the plurality of performance data to a cloud server; and the cloud server receiving the plurality of performance data and processing the performance data to obtain detection results. According to the method and system detecting the network performance based on cloud service, reuse and sharing of the network performance data is realized, and the utilization rate of the network performance data is raised.
Owner:GUANGXI HUNTER INFORMATION IND

Small-size juice extractor

The invention discloses a small-size juice extractor. Juice production enterprises always need to master the amount of juice in the production process, and according to a traditional method, purely-manual operation is conducted, and the juice is squeezed manually to be detected. The small-size juice extractor comprises a support, a jack installed at the lower portion of the support, and a pressure gage which is connected with the jack and can measure the pressure of the jack. An upper barrel and a lower collection barrel are installed on the support through a supporting board and a fixed guide board, and are separated through a filter pore board. A fixed pressing board is fixed to the upper end of the support and is sleeved with the upper barrel. A nylon pressing board is also arranged in the upper barrel. When the small-size juice extractor operates, the barrels filled with detected fruit pulps move upwards integrally, the detected fruit pulps in the upper barrel are squeezed and produce juice, the requirement for detecting the juice immediately is met on the conditions of limiting a pressure value and time, the amount of the juice can be detected more accurately, scientifically and reasonably, and detection results are objective and clear.
Owner:合浦果香园食品有限公司

Unmanned aerial vehicle ground detection method and system based on confidence

The invention relates to an unmanned aerial vehicle ground detection method and system based on confidence, and the method comprises the steps: carrying out the forward reasoning of video data collected frame by frame based on a model file and a weight file of a trained target detection deep neural network, and obtaining a position region of a to-be-detected target, obtaining a candidate region corresponding to the position region of the to-be-detected target in the current video frame and a region consistent with the candidate region corresponding to the current video frame in the next videoframe, determining the position region of the to-be-detected target, taking the position region of the to-be-detected target as a target position, storing the target position in a target position setand carrying out outputting. According to the technical scheme provided by the invention, the video acquired by the unmanned aerial vehicle in real time is monitored by adopting the deep neural network target detection method, the detection efficiency of the unmanned aerial vehicle is improved, and the method and system have important application value.
Owner:NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI

Control device for switching and charging electric vehicle battery

ActiveCN106683280AReasonable and fast battery lifeFast battery lifeCharging stationsElectric vehicle charging technologyAC powerCard reader
The invention provides a control device for switching and charging an electric vehicle battery, and belongs to the field of electric power control. The device solves the problem of the slow charging speed of the traditional electric car battery. The technical key points includes the following content: the device converts 220V AC power to DC voltage to supply power to a single chip and batteries simultaneously; a battery life checking module and a battery lock which are located in a battery cylinder are connected with a directive input end and a directive output end of the single chip through relays; the single chip checks the putting-in and taking-away of batteries in the battery cylinder through checking the battery voltage; if a battery is put in the battery cylinder, the user swipes a card, a main control single chip reads an ID number of the card through an RFID card reader; if the ID identification is successful, an electrically controlled lock is controlled through a relay to lock the battery which is just put in the battery cylinder, at the same time, a fully charged battery is released, a corresponding charging switch is closed to charge the battery; if the identification fails, the card swiping operation is invalid. The control device for switching and charging electric vehicle battery can be used in urban areas and residential areas, wherein batteries can be replaced by fully charged batteries to continue driving in the manner of battery lease.
Owner:HARBIN UNIV OF SCI & TECH

Testing system

The invention provides a testing system. The testing system comprises a temperature control system, a nitrogen system, a control system, a first testing device for testing a one-way valve and a secondtesting device for testing a jet pump. The temperature control system, the nitrogen system, the first testing device and the second testing device are electrically connected with the control system.The temperature control system comprises a rapid temperature change box, the nitrogen system is connected with the rapid temperature change box, and the rapid temperature change box is provided with an air inlet end and an air outlet end. A first air inlet and a first air outlet are formed in the first testing device, the second testing device is provided with a second air inlet and a second air outlet, and the first air inlet and the second air inlet communicate with the air outlet end through heat-insulating pipelines correspondingly. The heat insulating pipelines are provided with circulating draught fan systems. By adoption of the testing system of the technical scheme, the testing efficiency of the testing system is high, the requirement of industry detecting standards is met, and thesafety of the testing process can be ensured.
Owner:广电计量检测(无锡)有限公司

Detection device for press-mounting quality of bearing sealing device

The invention discloses a detection device for press-mounting quality of a bearing sealing device. The detection device comprises a measuring table, a rotating mechanism, a bearing supporting mechanism and a locating mechanism. The rotating mechanism comprises a pair of rollers and a rotating ring; the rotating ring is arranged in an arc-shaped groove of the measuring table and is supported by therollers, and two locating holes are radially formed in the outer periphery of the rotating ring in a central symmetry manner; the bearing supporting mechanism comprises two supporting flat plates andfour supporting rods; the two supporting flat plates are fixed to the internal surface of the rotating ring, and the spacing of the two supporting flat plates is adaptive to the outside diameter of abearing to be detected; the four supporting rods are fixed to two sides of the two supporting flat plates, and the spacing of each pair of supporting rods is adaptive to the height of an outer ring of the bearing to be detected; the locating mechanism comprises a locating bracket and a locating pin; and the locating pin penetrates through a through hole in the locating bracket, then sequentiallypenetrates through a spring and a pressing plate and are abutted against the outer periphery of the rotating ring. According to the detection device disclosed by the invention, the mounting quality ofthe bearing sealing device can be efficiently and accurately measured.
Owner:SHANGHAI UNITED BEARING

Structure for improving accuracy of box type aftertreatment nitrogen oxide measuring point

The invention relates to a structure for improving accuracy of a box type aftertreatment nitrogen oxide measuring point. The structure comprises a box body, a box type purification module is arrangedin the box body, a front square partition plate and a rear square partition plate are arranged in the box type purification module, a front cavity is formed between a front space of the front square partition plate and the box body, a front exhaust temperature sensor base is arranged in the front cavity, a front square end cover is arranged on the box body at the front end of the front cavity, anair inlet pipe is connected to the front square end cover, and a urea nozzle base is arranged on the outer wall of the air inlet pipe; a space between the front square partition plate and the rear square partition plate forms a middle cavity, and a carrier assembly and a spoiler are arranged in the middle cavity; a mixing pipe is arranged above the spoiler, a rear square end cover is arranged at the tail end of the box body corresponding to the rear cavity, and an air outlet pipe is connected to the rear square end cover. The structure is simple, compact and reasonable, ammonia gas and tail gas can be fully mixed, the accuracy of the nitrogen oxide measuring point is greatly improved, and it is ensured that the nitrogen oxide in exhaust gas emission reaches the standard.
Owner:WUXI WEIFU LIDA CATALYTIC CONVERTER

Method for detecting the risk rate of high arch dam construction in the early-middle period

The invention relates to the diversion risk analysis technology of construction of hydraulic and hydroelectric engineering, and discloses a method for detecting the risk rate of high arch dam construction in the early-middle period, which features that the risk rate of high arch dam construction in the early-middle period is accurately and reasonably quantify, and the risk rate of high arch dam construction in the early-middle period is quantified to provide important theoretical basis for safety risk assessment, decision-making and distribution of diversion risk in flood season. The method includes the following steps: a, carrying out simulation analysis of the mid-term flood retardation and obtaining the data of the flood retardation; b, performing construction of a high arch dam mathematical model of medium-term diversion risk; c, carrying out parameter analysis on random factor of construction flood and diversion tunnel discharge capacity, and determining distribution parameters ofeach random factor; d, carrying out random dynamic simulation of flood level change process during flood control and flood season; e, carrying out calculation of the early-medium-term diversion riskrate of the high arch dam; f, conducting risk identification of diversion tunnel design scheme for high arch dam construction. The method is applicable to detection of the early-medium-term diversionrisk rate of the construction of the high arch dam.
Owner:POWERCHINA CHENGDU ENG

a test system

The invention provides a testing system. The testing system comprises a temperature control system, a nitrogen system, a control system, a first testing device for testing a one-way valve and a secondtesting device for testing a jet pump. The temperature control system, the nitrogen system, the first testing device and the second testing device are electrically connected with the control system.The temperature control system comprises a rapid temperature change box, the nitrogen system is connected with the rapid temperature change box, and the rapid temperature change box is provided with an air inlet end and an air outlet end. A first air inlet and a first air outlet are formed in the first testing device, the second testing device is provided with a second air inlet and a second air outlet, and the first air inlet and the second air inlet communicate with the air outlet end through heat-insulating pipelines correspondingly. The heat insulating pipelines are provided with circulating draught fan systems. By adoption of the testing system of the technical scheme, the testing efficiency of the testing system is high, the requirement of industry detecting standards is met, and thesafety of the testing process can be ensured.
Owner:广电计量检测(无锡)有限公司

On-line Monorail Pantograph Monitoring System

ActiveCN103175473BEliminate false extractionsEnsure wearUsing optical meansMeasurement deviceContact pressure
The invention discloses an online monorail car pantograph monitoring system which comprises a detection box body arranged on a steel rail, a bending contact line, a programmable logic controller (PLC), a double ultrasonic detection device, a photoelectric switch, a lateral contact pressure measurement device, a pantograph detection device and an automatic switch protection door. The system is ingenious and reasonable in design, the wrong vehicle information extraction is effectively avoided by employing the design of the double ultrasonic probes, wrong judgment is avoided, and the smooth operation and safety of rail transit is ensured. The bending contact line has the bending structural design, and the abrasion conditions of the sliding plate are conveniently, clearly, intuitively and accurately obtained; the whole detection process of the lateral contact pressure measurement device is rapid and flexible, and the measurement accuracy and stability of the product are wholly improved; and moreover, the automatically opened / closed protection door can open or close the detection window, waterproof, dustproof and other functions are realized on the basis that the detection vision field of the detection equipment is not blocked during operation, and normal operation of the detection equipment is guaranteed.
Owner:DONGGUAN NANNAR ELECTRONICS TECH

Intelligent driving automobile accident detection system

PendingCN114750754ASolving the Incident Detection ProblemTimely detectionControl devicesTraffic crashAutomobile Accident
The invention provides an intelligent driving automobile accident detection system, which comprises a microphone array module, an acoustic electronic control unit, a central control unit, a look-around module, a look-around ultrasonic radar module, a positioning module and a remote information processor, and is characterized in that the central control unit comprises a multi-sensor fusion judgment module. And the multi-sensor fusion judgment module is used for generating an accident detection result according to one or more of the acoustic collision risk assessment result, the acoustic positioning information, the ultrasonic radar detection result, the ultrasonic radar identifier, the visual collision risk assessment result and the camera identifier. According to the intelligent driving automobile accident detection system provided by the embodiment of the invention, traffic accidents can be reasonably, effectively and quickly detected, and automobile owners or automobile responsible persons can be timely notified of accident-related information.
Owner:FAW VOLKSWAGEN AUTOMOTIVE CO LTD

A feed installation device for a releaser

The invention discloses a feeding mounting device of a releaser. The feeding mounting device comprises a vertical tube seat vibration plate, an ejection rod vibration plate, a main workbench, a rotary table, a vertical tube seat rotating structure, an upper valve seat transfer assembly robot, an upper valve seat assembly fixing robot and a finished product taking robot, wherein an upper valve seat loading robot, a vertical tube seat loading robot, an ejection rod loading assembly robot and an upper valve seat initial assembly fixing robot are arranged on the main workbench; a plurality of temporary fixtures are arranged on the rotary table, and a vertical tube seat accommodating groove and an upper valve seat accommodating groove are formed in each temporary fixture; a first vertical through hole communicating with each vertical tube seat accommodating groove is formed in the lower end of the vertical tube seat accommodating groove, and a second vertical through hole communicating with each valve body accommodating groove is formed in the lower end of each upper valve seat accommodating groove; and the vertical tube seat rotating structure comprises a rotary clamp head, an assembly motor and an assembly cylinder. The feeding mounting device has the beneficial effects that the structure is reasonable, the releaser can be assembled effectively, the automation degree is high, the assembly efficiency is high, and the effect is good.
Owner:ZHEJIANG ORIENTX FIRE SAFETY EQUIP

The detection method of diversion risk rate in the early-middle stage of construction of high arch dam

The invention relates to water conservancy and hydropower engineering construction diversion risk analysis technology, and discloses a method for detecting the diversion risk rate in the early-middle stage of construction of a high arch dam, which accurately and reasonably quantifies the diversion risk rate in the early-middle stage of construction of a high arch dam. Construction flood safety risk assessment, diversion risk decision-making, distribution, etc. provide important theoretical basis. The method includes the following steps: a. Carrying out a simulation analysis of the water-retaining degree in flood season in the early-middle stage of the construction of the high arch dam, and obtaining the data of the water-retaining degree in the flood season; b. Constructing a mathematical model of diversion risk in the early-middle stage of the construction of the high arch dam; c. Parameter analysis is carried out on the random factors of construction flood and the discharge capacity of diversion tunnel, and the distribution parameters of each random factor are determined; d. Random dynamic simulation of flood control degree and flood level change process is carried out; e. Calculation of flow risk rate; f. Risk identification of diversion tunnel design scheme for high arch dam construction. The invention is suitable for the detection of the diversion risk rate in the early-middle stage of high arch dam construction.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE

Guide light effect detection device and method for building light guide films and products thereof

The invention discloses a guide light effect detection device and method for building light guide films and products thereof and belongs to the field of building light guide film detection. The device comprises a metering box and a light source, the metering box is made of a light-proof sheet, the inner surface of the bottom wall of the metering box is gray, the inner surface of the side wall and the inner surface of the top wall of the metering box are white, an installation window used for installing light guide film test piece is formed in the side wall of the metering box, at least two luminous sensors are evenly distributed on the inner surface of the bottom wall of the metering box, and incandescent light bulbs are arranged on the inner surface of the top wall of the metering box. By the arrangement, difference of light guide performance of different products is easily compared, and high operability is achieved; use conditions of the building light guide films and the products thereof under the actual working condition can be simulated; comprehensive detection data are achieved, and the device and method is easy to be accepted by architects.
Owner:CHINA TEST & CERTIFICATION INT GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products