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46results about How to "Avoid human influence" patented technology

Method for monitoring and measuring full section of tunnel through three-dimensional laser

The invention relates to a method for monitoring and measuring a full section of a tunnel through three-dimensional laser, and belongs to the field of tunnel engineering construction monitoring. The method comprises the following steps of: arranging target points in a tunnel to be measured according to a requirement; determining whether to adopt one-station scan or multi-station scan according to the monitoring length of the tunnel; erecting an instrument at a proper position and scanning the full section of the tunnel; after the scan is finished, importing data into a computer; registering point cloud data acquired through the scan to generate a three-dimensional model by applying three-dimensional data processing software; and generating a comparison model by combining a previous three-dimensional model for the same tunnel at different time, and selecting a specific section and characteristic points to generate a variation analysis chart and a variation analysis sheet for a corresponding position. By the method, the full section of the tunnel is monitored in real time, the speed and accuracy of monitoring and measuring work are improved, manpower and material resources are saved, the speed and quality for monitoring and measuring the tunnel are improved, and reliable guarantee is provided for tunnel engineering construction.
Owner:BEIJING UNIV OF TECH +1

Device for testing performance of optical module

The invention discloses a device for testing the performance of an optical module and aims at providing a convenient and quick test environment. The invention is realized by the following technical scheme: a PC is connected to a server through an RJ45 network cable, is connected to an optical module performance test board through a USB data line, and is connected to an optical power meter throughan RS232 serial line, the optical power meter is connected to an ROSA optical device through an optical fiber splitter, a tested optical module is connected to the test board through a gold finger slot, the average optical power of the TX end of the tested optical module is divided into two by the optical fiber splitter, one path is sent to the ROSA optical device, and the other path is sent to the optical power meter, the PC obtains the average optical power value of the optical module measured by the optical power meter, and then compares the average optical power value with an optical powerthreshold that have been configured by the server, and determines whether the average optical power value of the tested optical module is within a normal range by using the comparison result. An alarm light visually displays various performance test results of the tested optical module.
Owner:四川泰瑞创通讯技术股份有限公司

System and method for checking and accepting quality of precast concrete component

The invention relates to a system and method for checking and accepting the quality of a precast concrete component. The system comprises a built-in wireless radio frequency electronic tag (5), an ultrahigh-frequency electronic tag read-write system (4), a front end operating platform (3) and a background service platform (2) with a central database (1). The method includes the operating steps that the operating platform obtains incoming component information; the component information is loaded through the ultrahigh-frequency electronic tag read-write system; the wireless radio frequency electronic tag which is arranged inside the precast concrete component in a built-in mode is scanned; whether the precast concrete component is to be checked and accepted is judged through display information; an item record is checked and accepted; 'passing check and acceptance' or 'returning to factory' is selected through click; qualified information is written in the wireless radio frequency electronic tag; the fact that checking and accepting are over is hinted and then a database file is generated; the checking and accepting record and a checking and accepting remark are uploaded to the operating platform; data are managed and then uploaded to the operating platform.
Owner:SHANGHAI UNIV

Multi-energy complementally driven dehumidification air-conditioning system

The invention discloses a multi-energy complementally driven dehumidification air-conditioning system which comprises a room internal partition wall, a room wall, a hollow fiber membrane, an indoor air return port, an indoor circulating fan, a wind driven generator, a storage battery, a solar thermal collector, a heat exchanger, an ultrasonic atomizer, an ultrasonic generator, a solution regenerator, an energy storage reservoir, a solution collection reservoir, a solution circulating pump, a liquid return pump and a plurality of valves. The solution regenerator is composed of an atomizing chamber, an air inlet, a solution baffle, a demister and an exhaust fan. The multi-energy complementally driven dehumidification air-conditioning system uses solar energy as the regeneration thermal source of a dehumidification solution, improves dehumidification solution regeneration efficiency by aid of the ultrasonic atomization effect, solves the problem of the solution dehumidification system that the air contains liquid by aid of the hollow fiber reverse osmosis membrane, is provided with electricity through wind power generation, and achieves diversification of system driving energy. The multi-energy complementally driven dehumidification air-conditioning system can meet architectural indoor dehumidification requirements in high-humidity seasons such as the spring and the summer, can supply heat to the buildings in summer, is especially suitable for being used in moist areas with cold winter and hot summer, and has remarkable social benefit and economic benefit.
Owner:SHANGHAI JIAO TONG UNIV +1

Confining pressure hydraulic fracturing experiment device and use method thereof

The invention discloses a confining pressure hydraulic fracturing experiment device and a use method thereof, and relates to samples. The confining pressure hydraulic fracturing experiment device comprises a confining pressure device and a collecting device, wherein the collecting device is used for collecting information related to events when the events of the samples occur. The confining pressure device comprises a pressure bearing shaft, an end cover, a cavity forming a sealing space with the end cover, an exhaust valve, a first water injection valve, a second water injection valve, a third water injection valve, a vacuum pump, a pressure transmitter, a water pump and a water injection pipe. The collecting device comprises an acoustic emission sensor, a sound receiver, a stress-strain piece and a stress-strain instrument. According to the confining pressure hydraulic fracturing experiment device and the use method thereof, the shortcoming that cracks can not be located in the prior art is overcome, and man-made influence existing in a traditional method based on continuum mechanics is avoided; according to the acoustic emission principle and the stress-strain effect, parameters of the fracturing process can be obtained really, the fracturing position can be located, a series of characteristics of wave forms and frequency released by fracturing can be recorded, and related parameter changing and fracturing laws of hydraulic fracturing of different coal and rock samples under different confining pressure conditions can be simulated.
Owner:ANHUI UNIV OF SCI & TECH

Measuring and reading device for a water and soil erosion survey pin and using method thereof

The invention discloses a measuring and reading device for a water and soil erosion survey pin. The measuring and reading device comprises a movable outer barrel and a guide inner barrel arranged inside, which are in sliding connection, wherein a limiting top cap is arranged above the top end of the guide inner barrel; a back cover is arranged at the bottom end of the guide inner barrel; the guide inner barrel and the movable outer barrel are equal in length; scales are formed in the guide inner barrel; the outer diameter of the guide inner barrel is greater than the outer diameter of the survey cap. The invention further discloses a using method for the measuring and reading device for the water and soil erosion survey pin. The measuring and reading device has the characteristics of being operated outdoors, capable of avoiding artificial interferences, accurate in reading, simple in structure, easy to grasp, low in using cost, reliable in performance, and the like. Compared with the conventional survey pin with the scales, the measuring and reading device can be used for overcoming the defects that the scales on the survey pin are easy to peel off, the rust corrosion is polluted, the reading is difficult, the efficiency is low, the requirements for the survey pin processing process are high, the cost is high, and the like.
Owner:TIANJIN UNIV

Device for detecting pins of liquid crystal display panel automatically

The invention relates to a device for detecting pins of a liquid crystal display panel automatically. The device for detecting the pins of the liquid crystal display panel automatically comprises a base plate and air cylinders, wherein positioning columns are fixed to the four corners of the base plate, adjustment screws are connected to the two sides of one end of the bottom surface of the base plate in a threaded mode, a guide rod is arranged between every two adjacent positioning columns in the longitudinal direction, two movable testing plates and two fixed testing plates are arranged between the guide rods on the two sides in a moving and penetrating mode, the two fixed testing plates are arranged between the two movable testing plates, the two the side faces of the two movable testing plates are connected to the air cylinders, the two fixed testing plates are fixed to the guide rods through fastening bolts arranged on the two sides of the fixed testing plates, a testing circuit board is arranged on the side face, near to the corresponding movable testing plate, of each fixed testing plate, a limiting clamping plate is arranged on the upper surface of each fixed testing plate, quantitative labels are arranged on the upper surfaces of the movable testing plates, the number of the quantitative labels corresponds to the number of the pins of the liquid crystal display panel, and the overall width of the quantitative labels corresponds to the overall width of the pins of the liquid crystal display panel. The device for detecting the pins of the liquid crystal display panel automatically is suitable for liquid crystal display panels in different specifications, the visual angle can be adjusted and detected automatically, and detection precision, the detection reliability and the detection timeliness can be improved easily.
Owner:HEFEI CHENGHUI ELECTRONICS

Micro-channel radiator and micro-scale topological optimization design method thereof

The invention belongs to the related technical field of heat flow coupling topological optimization design, and discloses a micro-channel radiator and a micro-scale topological optimization design method thereof, and the method comprises the following steps: firstly, carrying out the local feature extraction of the micro-channel radiator to obtain a micro-scale unit, taking the micro-scale unit as a design object, and carrying out finite element grid division on the mesoscopic units; and then, based on the finite element grid in the design domain of the micro-scale unit, obtaining a micro-channel topological structure under the micro-scale through a parameterized level set topological optimization method, and arraying the micro-channel topological structure under the micro-scale to obtain the micro-channel radiator. According to the method, the micro-channel radiator is divided into a plurality of micro-scale units, and topological optimization design is carried out by taking the micro-scale units as objects, so that a large number of finite element grid units are prevented from being divided in order to describe small channels during macroscopic design, the calculation overhead is saved, and the calculation efficiency is improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Device capable of simultaneously preparing multiple triaxial disturbed soil samples

The invention relates to a device capable of simultaneously preparing multiple triaxial disturbed soil samples, and belongs to the field of soil engineering testing. The device capable of simultaneously preparing the multiple triaxial disturbed soil samples comprises a die forming frame (1), a jack (2), a base plate (3), sample loading devices (4), fixed pistons (5), size troughs (6) and a size snap-gauge (7), wherein the jack (2) is arranged on the lower part of the die forming frame (1); the base plate (3) is arranged on the jack (2); the sample loading devices (4) are respectively placed inupper groove of the base plate (3); the fixed pistons (5) are fixed on the upper part of the die forming frame (1); the size troughs (6) are placed on a left frame rod and a right frame rod of the die forming frame (1); the size snap-gauge (7) is placed in the size troughs (6). The device has the advantages of simple structure and convenience in operation, working efficiency and sample making quality are improved through a semi-mechanization operation, human impact factors are avoided, and the device is suitable for all soil types of which the specimen particle size is smaller than 2cm.
Owner:KUNMING PROSPECTING DESIGN INST OF CHINA NONFERROUS METALS IND

Girdling device based on agricultural planting maintenance and using method of girdling device

The invention discloses a girdling device based on agricultural planting maintenance and a using method of the girdling device, and belongs to the technical field of agricultural planting auxiliary devices. The girdling device based on the agricultural planting maintenance comprises a first fixing plate, a second fixing plate, a fixing assembly and a girdling assembly, wherein an air cylinder is connected between the first fixing plate and the second fixing plate; the fixing assembly is connected to the inner walls of the first fixing plate and the second fixing plate; a second supporting plate is slidably connected to the bottom wall of the fixing assembly; and the second supporting plate is connected with the girdling assembly through a connecting plate, a transmission assembly is connected to the bottom wall of the second supporting plate, a gear ring is arranged on the outer wall of the fixing assembly and connected with the output end of the transmission assembly, a material collecting barrel is further arranged at the bottom of the transmission box, and a crushing assembly is arranged in the material collecting barrel. The girdling device can effectively improve the stabilityperformance in the girdling process of fruit trees, improves the girdling effect of the fruit trees, can automatically rotate for girdling, reduces the labor intensity, and improves the girdling efficiency.
Owner:萧县禾盛种业有限公司

Soil auger for undisturbed bisect soil column of filed soil

The invention relates to a soil auger for an undisturbed bisect soil column of filed soil, which comprises a power device, an undisturbed soil inner cylinder, a helical outer cylinder and soil cutting devices. The power device is positioned on the top of the soil auger; the power device, the undisturbed soil inner cylinder and the helical outer cylinder are arranged concentrically up and down. A fixing sleeve for the undisturbed soil inner cylinder on a fixed shaft on the lower part of a direction-changing gear case of the power device is coupled to the undisturbed soil inner cylinder. The undisturbed soil inner cylinder is arranged in the helical outer cylinder, and downwards passes through a shield bearing on the lower part of an inner wall of the helical outer cylinder; and two parallel sheet helixes are welded on the outer wall of helical outer cylinder; two helical soil scrapers are welded at the bottoms of the two parallel sheet helixes; and a set of soil cutting device is arranged at the opposite positions of the outer wall of helical outer cylinder respectively. The soil auger has the advantages of simple structure, simple and convenient operation and convenient carrying, is suitable for field survey, observation and sampling related to soil, guarantees the undisturbed performance and the representativeness of the soil, reduces the working capacity, avoids damaging thesoil sample environment, and has the advantages of wide application, accuracy and high efficiency.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Rotating disc type cigarette inserting device for detecting cigarette ends

The invention discloses a rotating disc type cigarette inserting device for detecting cigarette ends. The rotating disc type cigarette inserting device comprises a multichannel rotating disc, a fixeddisc, a pneumatic connector arranged on the fixed disc, a retainer, a supporting seat, a retainer base, a stepping motor, a coding disc and a photoelectric switch for position detection, wherein a rotating disc flange is mounted on the retainer; a plurality of sample inserting holes are circumferentially arranged on the multichannel rotating disc; the rotating disc is arranged on the rotating discflange through a flange pressing knob; the multichannel rotating disc and the fixed disc are tightly laminated together and a sealing structure is arranged at the pneumatic connector and the sample inserting holes; when the multichannel rotating disc drives a sample to rotate to the position of the pneumatic connector and is coaxial with the pneumatic connector, a suction channel is connected; the stepping motor is started for transmission to drive the multichannel rotating disc to rotate; the rotating angle of the steeping motor is controlled by the coding disc and the photoelectric switch for the position detection. The device disclosed by the invention provides conditions for an inserting mode and smoking process of cigarette samples in the testing process; human influence is overcomeand the detecting efficiency is improved.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC +2

Aircraft surface pressure sensor testing device and method

The invention discloses an aircraft surface pressure sensor testing device and method. The aircraft surface pressure sensor testing device comprises an aircraft body, a pressure sensor, an airborne telemetering system, a ground telemetering system, a ground testing system, a pressure loading device, a standard barometer and a stopwatch timer. The standard barometer measures ambient atmospheric pressure; the ground testing system powers up the aircraft body and sets an aircraft testing mode; the ground telemetering system receives aircraft telemetering data and records a measurement value of the surface pressure sensor; whether the measurement data is normal or not is judged; a rated pressure output value of the pressure loading device is set, a loading experiment is carried out on the surface pressure sensor, a sensor measurement value at the beginning of loading of the surface pressure sensor and a sensor measurement value at the end of loading are recorded, loading time is recorded by using the stopwatch timer, and fault diagnosis is carried out on the surface pressure sensor. A preliminary diagnosis rule of sensor fault information is given, and a convenient and rapid surface pressure sensor function test can be realized.
Owner:中国空气动力研究与发展中心超高速空气动力研究所

Method for determining powdery mildew resistance of miniature rosa chinensis

InactiveCN103404360AReduce circulationAvoid affecting the degree of infectionHorticultureGreenhouseInoculation methods
The invention discloses a method for determining powdery mildew resistance of miniature rosa chinensis. The method comprises the steps of (1) preparing powdery mildew pathogen carriers; (2) preparing test cultivar groups; (3) arranging test units; (4) evaluating the resistance. According to the method for determining the powdery mildew resistance of the miniature rosa chinensis, determination is conducted in a plastic greenhouse, the powdery mildew pathogen carriers are set, and artificial inoculation is not required; environmental conditions which are relatively stable and beneficial to development and progression of powdery mildew are built, so that the powdery mildew resistance of the miniature rosa chinensis can be shown fully, and the phenomenon that test results are influenced due to influence of differences of weather conditions and pathogen inoculation methods on powdery mildew infection degrees of the miniature rosa chinensis is avoided; relative susceptible indexes can reflect the powdery mildew resistance of the miniature rosa chinensis objectively, and man-made influence caused by a disease classification method when disease indexes are used for evaluating the disease resistance is avoided. The method for determining the powdery mildew resistance of the miniature rosa chinensis can satisfy inducing conditions of the powdery mildew fully, conforms to production reality, is simple and easy to implement and is high in practical application value in cultivation and breeding of the miniature rosa chinensis.
Owner:JIANGSU ACAD OF FORESTRY

Flexible positioning wear-less vibrating sand filling device for fuse protectors

The invention relates to a flexible positioning wear-less vibrating sand filling device for fuse protectors. The flexible positioning wear-less vibrating sand filling device comprises a vertical variable-frequency vibrator, a support, a prepressed track type sand filling valve component, a flexible compression positioning component, a flexible sand filling nozzle component, a sand filling cylinder, a sand filling sensor component, a multi-station turn plate and a vibrator power switch. The vertical variable-frequency vibrator is arranged on the multi-station turn plate, the support is arranged on the vertical variable-frequency vibrator, the prepressed track type sand filling valve component, the flexible compression positioning component and the flexible sand filling nozzle component are arranged on a cylinder movable seat of the sand filling cylinder, the cylinder movable seat is arranged on the support, the sand filling sensor component is arranged on the vertical variable-frequency vibrator and corresponds to the flexible sand filling nozzle component, and fuse protectors are arranged on a fuse protector support on the vertical variable-frequency vibrator. Compared with the prior art, the flexible positioning wear-less vibrating sand filling device for the fuse protectors has the advantages of small wear to workpieces, rapidness, convenience, high efficiency and the like.
Owner:SHANGHAI UNIV OF ENG SCI

A method for identifying faulty abnormal sound of range hood

ActiveCN111076246BAccurately determine the abnormal situation of sound failureAvoid human influenceDomestic stoves or rangesSubsonic/sonic/ultrasonic wave measurementTest roomNoise
The invention relates to a method for identifying the abnormal sound of a range hood failure, which is characterized in that: the fan system of the range hood to be tested is set on the workbench of the test room, and a sound collection device is installed next to the fan system of the range hood to be tested. The method for identifying the abnormal sound of the range hood fault includes the following steps: Step 1, collecting and extracting the sound pressure value of the ambient background noise; Step 2, collecting and recording the running sound signal of the fan system of the range hood under test from the start of operation to the operation within 30s , will be divided into three periods; Step 3, extract the sound pressure values ​​of different periods respectively; Step 4, calculate Δ i , if Δ i If it is greater than or equal to the preset value, then according to whether the difference between the sound pressure of the center frequency and the sound pressure of the adjacent center frequency in different periods is greater than or equal to P, it is judged whether there is a faulty abnormal sound in the range hood. Compared with the prior art, the method provided by the invention conducts quantitative analysis and judgment on the sound signal of the range hood, eliminates human influence, has better consistency results, and can also improve work efficiency.
Owner:NINGBO FOTILE KITCHEN WARE CO LTD

Automatic screw tightening device

The invention relates to an automatic screw tightening device which comprises a rack part, a guide part, a moving tightening part, a screw guiding and cutter relieving part and an auxiliary part, wherein the rack part consists of a bottom plate, a round guide rail and an upper cover board; the guide part consists of a moving guide plate, a screw guide barrel and a guide cylinder; the moving tightening part consists of a screwdriver rod, a torque transmission nail, an adjusting spring, a connecting sleeve, a moving plate, a moving cylinder and a pneumatic motor; the screw guiding and cutter relieving part consists of a spring, a lifting pin, a shaft pin, a swing iron and a fixing part; and the auxiliary part consists of a die and a control part. In the working process, a workpiece is fed into the die, a screw is conveyed to the screw guide barrel through a pneumatic conveying device and the screw is guided and limited to be separated from the screw guide barrel through the screw guiding and cutter relieving part. When the screw is tightened, the pneumatic motor of the moving tightening part is inflated to drive the screwdriver rod to rotate through a connecting sleeve and the torque transmission nail, and the moving cylinder is inflated to drive the moving tightening part to move so as to screw the screw tightly. Compared with the prior art, the automatic screw tightening device has the advantages of high efficiency, high quality, wide application range and the like.
Owner:太仓市凯德防腐科技有限公司

Intelligent pairing distribution system and method

PendingCN113962512AAverage dispersionReduce the risk of excessive concentration of allocation specificationsResourcesLogisticsDistribution systemData mining
The invention discloses an intelligent pairing distribution system and method, the intelligent pairing distribution system comprises a warehouse receipt module, an intention confirmation module, a small receipt distribution module and a large receipt distribution module, the warehouse receipt module is used for counting warehouse receipt parameters in a warehouse and obtaining a minimum unit; the intention confirmation module is used for confirming effective intentions and obtaining an application quantity according to the effective intentions; the small receipt distribution module is used for preliminarily distributing warehouse receipts according to the application quantity and updating the application quantity; and the large receipt distribution module is used for carrying out deep distribution on the remaining warehouse receipts after preliminary distribution by taking the minimum unit as a benchmark according to the updated application quantity. According to the intelligent pairing distribution system and method provided by the invention, a'minimum unit 'technology is adopted, diversified warehouse receipts are combined into units as minimum units, it is ensured that resources distributed to each user are averagely dispersed as far as possible in specification attributes, and the risk that the concentration degree of distribution specifications of buyers is too high is reduced.
Owner:上海钢铁交易中心有限公司
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