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93results about How to "Fix measurement inaccuracies" patented technology

Measuring method and system of packet loss

The invention provides a measuring method and system of packet loss, wherein the measuring method comprises the following steps: a first end obtains a received frame number of a current measure response frame and a frame number of a previous measure response frame, wherein the current measure response frame and the previous measure response frame are obtained by enabling a second end to respond to a packet loss measure message frame transmitted by a first end; the first end judges whether the difference between the frame number of the current measure response frame and the frame number of the previous measure response frame is 1 or not; and if the difference is 1, the first end figures out the packet loss according to the current measure response frame and counting information carried in the previous measure response frame; and if the difference is more than 1, the first end calculates to obtain the packet loss according to the current measure response frame and the counting information carried in the previous measure response frame as well as the difference between the frame numbers. According to the invention, the problem of inaccuracy in the packet loss measurement while the protocol frame loss exists in the prior art is solved so that a technical effect of accurately measuring the packet loss is realized.
Owner:ZTE CORP

Bearing roller pin size detection system and method based on machine vision

The invention discloses a bearing roller pin size detection system and method based on machine vision. A single low-cost 2D camera is used for collecting images. An industrial camera is used to acquire the images. The acquired images are stored in an industrial personal computer. The industrial personal computer processes the images. Background interference is removed from the processed images byusing horizontal and vertical projection methods, angle correction is performed on an extracted ROI area. A ROI image is converted into a binary image by using a threshold segmentation method, and filling is performed to ensure that an internal color of a contour of a roller pin is white. Contour extraction is performed on the processed image. A detection size of the roller pin is calculated according to a proportional relation between a visual field range of the camera and an image pixel, the roller pin with a qualified size arrives at a storage box along with a transmission belt, and for theroller pin with a unqualified size, an elimination signal is sent to PLC by the industrial personal computer, and an elimination mechanism is controlled to eliminate the roller pin through the PLC. The roller pins moving on an assembly line are detected and removed in real time.
Owner:JIANGNAN UNIV

Aerodynamic heat flow measuring device and method for plume field of engine in vacuum chamber

InactiveCN104535289AAvoid damageZero drift is smallAerodynamic testingHeat flowEngineering
The invention discloses an aerodynamic heat flow measuring device and method for the plume field of an engine in a vacuum chamber. A support is fixedly mounted on an installation platform of a four-axis movement mechanism, the rear end of a heat flow sensor penetrates the rear side of the support, the heat flow sensor is sleeved with an insulated end cover, and an insulation sleeve is arranged between the heat flow sensor and the support. A signal line of the heat flow sensor is placed in a signal line protective piece, and connected to a signal converter by penetrating the front side surface of the support and then lead to a signal collector outside the vacuum chamber via a chamber-through flange. Voltage signals measured by the heat flow sensor are converted into current signals via the signal converter, and then collected by the signal collector, heat flow values are obtained by conversion according to the coefficient of the hot flow sensor, and thus, the aerodynamic heat flow of the plume field of the engine in the vacuum chamber is obtained. The method and device have the advantages that a three-dimensional movement device is cooperated, total-flow-field measurement is realized, and the problem that interference among sensors influences the flow-field form and further leads to inaccurate measurement is completely solved.
Owner:BEIHANG UNIV

Method and device for obtaining downlink channel quality information

The invention provides a method and device for obtaining downlink channel quality information, so that obtained downlink CQI is matched with actual downlink CQI after the multi-antenna technology is led in a wireless communication system. The method includes the steps that transmission nodes in a cooperation node set obtain received noise power of UE 11 and interference power of nodes in a non-cooperation node set on the UE 11; the transmission nodes in the cooperation node set obtain interference power between users in multi-user scheduling of the transmission nodes in the cooperation node set and power of effective received signals of the UE 11; the transmission nodes in the cooperation node set obtain interference power of non-transmission nodes in the cooperation node set on the UE 11; the ratio of the receiving power of effectively signals and the sum of interference source power and the received noise power of the UE 11 is calculated, and the ratio is used as the value of the downlink CQI between the transmission nodes and the UE 11.
Owner:HUAWEI TECH CO LTD

Passive wireless surface acoustic wave stress sensor adopting three-layer stress transferring model

The invention relates to a surface wave stress sensor based on a three-layer stress transferring model. The surface acoustic wave stress sensor provided by the invention comprises a piezoelectric substrate material, an interdigital transducer, a reverse grid, a small antenna and an adhesive agent used for sticking the sensor, wherein a surface acoustic wave resonator is adhered to a detected object by the adhesive agent. Different from the traditional surface acoustic wave stress sensor, a three-layer mechanical model, namely a detected structure substrate, an adhesive layer, an SAW (surface acoustic wave) resonance layer of the surface acoustic wave stress sensor, is established, a stress transferring formula and a stress transferring coefficient of the SAW sensor are deduced and the factors influencing the SAW sensor measuring result are achieved. The main factors influencing the sensor stress transferring contain the length of the sensor, the thickness of the adhesive layer, the modulus of elasticity, the thickness of an SAW quartz substrate, and the like. The thinner the adhesive layer is, the longer the SAW resonator is and the larger the modulus of elasticity of the material is, the better the detecting precision of the stress sensor is. The surface acoustic wave stress sensor is simple in structure, small in volume, light in weight, convenient to use and suitable for stress wireless remote monitoring under severe environment.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Switch machine notch monitoring system and method based on binocular visual processing identification

The invention provides a switch machine notch monitoring system and method based on binocular visual processing identification, relating to the switch machine notch monitoring field. The detection system comprises an on-site binocular collection subsystem, a CAN bus fiber transmission subsystem and a monitoring subsystem. The binocular collection subsystem collects notch images, and transmits the images to the monitoring subsystem through the CAN bus fiber transmission subsystem; the monitoring subsystem performs visual processing, and employs a gauss filter to perform smooth filtering de-noising processing; a Canny edge detector extracts notch edge information, performs Hough transformation on edge images to detect line segments, and identifies line segment information in the images. Through a series of constraint conditions, effective line segments on the top left side of notch edges are screened, reference mark and real marking line segment coordinates are recorded, and notch offsets on the images are calculated according to image geometrical distances. According to proportions, real notch offsets are calculated. A left image and a right image are both processed according to the processing flow, thereby improving calculating accuracy.
Owner:JIANGSU GENTURE ELECTRONICS INFORMATION SERVICE CO LTD

Channel quality information measurement method and device and channel quality information measurement resource allocation method and device

The invention discloses a channel quality information measurement method and device and a channel quality information measurement resource allocation method and device. The allocation method includes: a base station determines resource information used for excluding part of measurement resources in one of ways as follow; the base station allocates resource information of CRSs (common reference signals) in a resource block according to different CSI-RSs; the base station allocates resource information of multiple CRS sets in a resource block; the resource information in the corresponding resource block is allocated according to the detected allocated CRSs; the base station sets a set of CRS resource information; the base station determines resource information of the used CRS resources; the base station determines the resource information of OFDM symbols used by the CRSs; the base station allocates resource information such as resource information allocated by multiple MBSFN sets; the base station transmits the resource information to a terminal. The measurement resources are used for CQI measurement for the terminal. The channel quality information measurement method and device and the channel quality information measurement resource allocation method and device have the advantages that measurement of channel quality information is more accurate.
Owner:ZTE CORP

Method and device for measuring productivity of oil well

The invention discloses a method and a device for measuring the productivity of an oil well. The method and device for measuring the productivity of the oil well have the advantages of good effect of separating oil and water, high measuring accuracy, simplified process, good convenience in use, and no pollution of radioactive rays, and are used for solving problems in the background technology. An electromagnetic sampling oil-water separator, a liquidometer and a traditional gas-liquid separating tank are combined as a whole body for measuring the oil and the water, wherein the gas-liquid separating tank realizes the separation of the gas and the liquid, the electromagnetic sampling oil-water separator and the measuring cavity of the gas-liquid separating tank are combined to realize the separation measuring of oil content and water content in the liquid, the liquidometer and the measuring cavity of the gas-liquid separating tank are combined to realize the measuring of the volume flow rate of an underground liquid, and the gas separated from the gas-liquid separating tank is measured by a gas meter (with temperature and pressure measuring function), thus the measuring of the oil, the gas, the water produced from the oil well is realized.
Owner:陈爱民

Method and device for processing power parameters

The invention discloses a method and a device for processing power parameters. The method comprises the following steps: user equipment (UE) acquires the power relationship parameter and the ratio of a first kind of sub-frames and a second kind of sub-frames, wherein the power relationship parameter is used for indicating the power relationship of the first kind of sub-frames and the second kind of sub-frames; and the UE performs data demodulation operation and / or channel measurement operation on the first kind of sub-frames by utilizing the power relationship parameter and the ratio. Through the method and the device provided by the invention, the problem that the data demodulation or channel measurement of the UE is inaccurate due to different power configurations of different kinds of sub-frames in correlation techniques is solved, and the system performance is improved.
Owner:ZTE CORP

Optical waveguide lightning pulse electric field detection device of suppressing piezoelectric interference and method

The present invention discloses an optical waveguide lightning pulse electric field detection device of suppressing the piezoelectric interference. The device comprises a tunable laser used for generating a laser signal of a preset working wavelength threshold value according to a control instruction of a control module; an optical waveguide electric field sensor used for sensing an electric fieldsignal in a to-be-detected area and outputting an optical signal; an optical fiber coupler used for dividing the optical signal into a first signal and a second signal according to a preset proportion and separately sending to a photoelectric detector and the control module; the photoelectric detector used for converting the first signal into a to-be-detected electric signal; the control module used for sending out the control instruction to the tunable laser according to the second signal, and controlling the wavelength of the laser signal sent out by the tunable laser. According to the present invention, by utilizing the tunable laser, the situation that the optical waveguide electric field sensor always works in a linear area is guaranteed, at the same time, by using the trapezoidal optical waveguide electric field sensor, the interference of the piezoelectric interference to the pulse signal measurement can be suppressed effectively, and an electric field generated by a lightningpulse signal can be measured more accurately.
Owner:CHINA ELECTRIC POWER RES INST +3

Laser measuring device for measuring reservoir water level and measuring method thereof

The invention provides a laser measuring device for measuring the water level of a reservoir and a measuring method thereof. The device comprises an infrared distance measurement tracking head and a water level indicator target disc, wherein the infrared distance measurement tracking head is arranged on the control tower; the outer distance measurement tracking head comprises a tracking camera; aninfrared distance measuring head is arranged above the tracking camera; the tracking camera is hinged with the outer shell; the lower part of the shell is rotationally connected with a fixed plate; afirst driving device and a second driving device are arranged in the outer shell; the first driving device drives the outer shell to rotate; the second driving device drives the tracking camera to swing up and down; the water level indicator target disc is arranged on the water surface of the reservoir; the water level indicator target disc is fixed through a fixing anchor; a tracking camera in the infrared distance measuring tracking head is used for tracking the position of the water level indicator target disc, wherein the infrared distance measuring head is used for shooting on the waterlevel indicator target disc to measure the water level. By means of the device, a worker can master the water level of a reservoir in real time, the worker does not need to go to the site to read data, manpower is saved, and the water level measuring accuracy of the device is improved.
Owner:HUBEI QINGJIANG HYDROPOWER DEV

Method and device for measuring liquid level of absorption tower

The invention provides a method for measuring the liquid level of an absorption tower. The method includes the steps as follows: calculating the slurry average density of any two predetermined heights through collecting the pressure values at the predetermined heights of slurry of the absorption tower; and obtaining a curve for the slurry density and the height of the absorption tower as per the slurry average density through adopting the interpolation fitting algorithm, so as to obtain the liquid level value of the slurry. The method provided by the invention effectively solves the problem that the liquid level measurement of the absorption tower is inaccurate in the prior art, is lower in the cost of the used detecting instrument in the invention compared with the cost of the used measuring instrument in the prior art, and reduces the production and running cost of a power plant.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1

High-precision pressure sensor experimental model and experimental method

InactiveCN106228876AEasy to disassembleSuitable for innovative designEducational modelsSignal processing circuitsStrain gauge
The invention discloses a high-precision pressure sensor experimental model and an experimental method, and relates to the technical field of automatic detection and sensing, in particular to the field of pressure measurement and high-precision conversion and display of a strain gauge, and provides a sensor experimental model which can be freely assembled and disassembled and innovatively designed by a user. The experimental model comprises a base, a support, a cantilever beam and a weighing pan, wherein the support is arranged in the middle of the base, the cantilever beam is arranged at the top end of the support, and one end of the cantilever beam is fixed to the support through a bolt to form a cantilever beam structure; suspending holes are formed in the edges of the weighing pan, a thin rope penetrates through the suspending holes to suspend the weighing pan at the other end of the cantilever beam, and the strain gauge is arranged on the cantilever beam. The high-precision pressure sensor experimental model is provided with an independent detection system, the detection system comprises a shell and a detection circuit board, and a signal processing circuit, a key circuit, a single-chip microcomputer small system circuit, a display circuit, an over-limit warning circuit, a serial port communication circuit and a power source circuit are arranged on the detection circuit board.
Owner:WUXI VOCATIONAL & TECHN COLLEGE

Three-phase electric energy metering module and calibrating method thereof

The invention discloses a three-phase electric energy metering module and a calibrating method thereof. The three-phase electric energy metering module comprises a three-phase electricity input channel, a three-phase electricity calculating channel, a multi-channel selecting switch and a controller; and the controller is used for controlling switch-on and switch-off of the multi-channel selectingswitch so as to communicate the three-phase electricity input channel with the three-phase electricity calculating channel in different combination modes. The problems that in the prior art, the three-phase electric energy metering module inaccurately measures possibly is solved, and the measuring precision of the three-phase electric energy metering module is improved.
Owner:GREE ELECTRIC APPLIANCES INC OF ZHUHAI

Method for measuring cell reference signal and mobile station

The invention discloses a method and a device for measuring a cell reference signal. The method comprises the following steps that: a base station of a service cell in which a mobile station is located sends measuring frequency points to the mobile station; and the mobile station disperses a total measurement bandwidth to the measurement frequency points according to an instruction of the base station, and carries out measurement. According to the method and the device provided by the invention, the measurement frequency points measured by the mobile station are dispersed, so that a disturbed condition in the entire system bandwidth is sufficiently reflected by a measurement result. Therefore, the problem of inaccurate measurement results caused by that the measurement only can be carried out on six wireless resource blocks in the center of a frequency band of the service cell in the prior art can be solved.
Owner:李文龙

Gauge for measurement of chamfer to datum level of three-pin shaft fork

The invention discloses a gauge for measurement of a chamfer to a datum level of a three-pin shaft fork. The gauge comprises a base plate, a workpiece fixing seat, a dial indicator, a gasket and a centering cone shaft; the upper surface of the base plate is horizontally arranged, and stay bars are arranged on the base plate; the working piece fixing seat is arranged on the base plate; the dial indicator is fixed with the stay bars through a dial indicator fixing seat, and the measuring bar of the dial indicator is vertically arranged; the gasket is fixed with the dial indicator fixing seat through a rotating shaft, the first end and the second end of the gasket are respectively located on left and right sides of the axis of the rotating shaft, the first end of the gasket is abutted against the measuring head of the dial indicator, and the second end of the gasket is arranged in a manner of extending out of the dial indicator fixing seat to be abutted against the datum level of a workpiece clamped in the working piece fixing seat; the tip of the centering cone shaft is arranged downwardly, the centering cone shaft is fixed with the stray bars through a fastening ring and can move vertically relative to the stray bars, and the axis of the centering cone shaft is coincided with the workpiece clamped in the workpiece fixing seat. By the arrangement, the distance from the chamber to the datum level can be measured rapidly and accurately.
Owner:武汉共康汽车零部件有限公司

Measuring method of received signal strength indicator (RSSI), measuring device of RSSI and receiver

The invention provides a measuring method of a received signal strength indicator (RSSI), a measuring device of the RSSI, and a receiver. The method comprises the following steps: a digital domain RSSI output at the front end of the receiver is measured; an access noise power at the front end of the receiver is measured; a digital domain power dB value of an obtained receiving signal is calculated according to the digital domain RSSI and the access noise power; the differential value of the digital domain power dB value of the receiving signal and a processing gain at the front end of the receiver is calculated, so that the RSSI at the front end of the receiver is obtained. When the RSSI is calculated, the influence of the access noise is removed, so that the relatively accurate RSSI can be obtained; and the problem of the inexact RSSI measurement of the existing measurement solution under a small signal is solved.
Owner:HUAWEI TECH CO LTD

Wheel type range finder

The invention discloses a wheel type range finder which comprises a range finder body. The range finder body comprises a wheel carrier and a measurement wheel. The wheel carrier is connected with a guide wheel through a guide frame. A guide groove matched with a guide rail is formed in the wheel face of the guide wheel. The guide wheel is installed in front of the measurement wheel. The guide wheel with a positioning groove is installed on the wheel type range finder and conducts guiding in front of the measurement wheel, the guiding performance is good, it is avoided that the measurement wheel on the rail is likely to fall off the face of the rail, and the measurement precision is greatly improved. The range finder is placed on the face of the rail and can be pushed forwards at a high or low speed, more time and labor are saved for operators, the measurement efficiency is improved, the problems that in the prior art, measurement is not precise, operation is not convenient and time and labor are wasted are effectively solved, and the wheel type range finder has the advantages of being simple in structure, convenient to operate, use, assemble, disassemble and maintain, and low in price.
Owner:CHINA RAILWAY NO 5 ENG GRP +1

Heart impulse signal measuring device and method and seat

The application discloses a heart shock signal measuring device, method and seat, which belong to the field of medical measurement. The device includes: a measuring circuit for measuring the BCG signal of the first part of the human body, a compensation circuit for measuring the compensated BCG signal of the second part of the human body, and a circuit for obtaining an effective BCG signal after fusing the measured BCG signal and the compensated BCG signal controller. In this application, the effective BCG signal is obtained by fusing the measured BCG signal and the compensated BCG signal through the controller, and the BCG waveform diagram is generated according to the effective BCG signal. Since the measured BCG signal has a sharply attenuated signal segment, the amplitude of the compensated BCG signal is relatively weak. Compensating the BCG signal compensates the sharply attenuated signal segment corresponding to the measured BCG signal, which solves the problem of inaccurate measurement caused by generating the BCG waveform diagram only by measuring the BCG signal of one part, and improves the accuracy of the BCG signal measurement.
Owner:QINGDAO HISENSE MEDICAL EQUIP

Carbon dioxide detection device

InactiveCN105044277AAvoid enteringSolve easy corrosion damageMaterial analysisComputer moduleEngineering
The invention relates to a carbon dioxide detection device which is low in cost and is suitable for solar greenhouses. The carbon dioxide detection device includes a power supply module, a data processing module and a carbon dioxide data detection module which are arranged in a sealed shell body. The power supply module supplies power to the data processing module and the carbon dioxide data detection module. The data processing module is connected to the carbon dioxide data detection module. The carbon dioxide data detection module includes a protective apparatus and a carbon dioxide sensor. One end of the protective apparatus is provided with a waterproof protective apparatus and the other end of the protective apparatus is sealedly fixed with the shell body. An air flowing channel is formed in the protective apparatus. The carbon dioxide sensor detects the concentration data of carbon dioxide and then sends the data to the data processing module for storing and displaying the data. The carbon dioxide detection device is suitable for agricultural production in the solar greenhouses and can be used for monitoring the concentration of carbon dioxide in real time.
Owner:CHINA AGRI UNIV +1

Hot casting measuring method and device based on compressed sensing algorithm

The invention discloses a hot casting measuring method and device based on a compressed sensing algorithm. The method comprises the following steps of step1, obtaining a complete optical signal of a part to be tested of a tested hot casting, and converting the obtained optical signal into an electrical signal; step2, converting the electrical signal into an electrical signal matrix, and simplifying the electrical signal matrix into an equation; step3, solving an electrical signal equation through a compressed sensing algorithm to obtain a vector C; step4, restoring the obtained vector C to a two-dimensional grid matrix according to a principle of a row priority, and acquiring image information of the part to be tested of the tested hot casting; and step5, obtaining size information of thepart to be tested of the tested hot casting according to the image information of the part to be tested of the tested hot casting. Through measuring the hot casting under shielded high-temperature-resistant asbestosed wire gauze multiple times and combining the compression sensing algorithm, the measurement information of the complete hot casting is acquired, and a shape of the tested hot castingcan be accurately obtained.
Owner:NANJING INST OF TECH

Semiconductor device and manufacturing method thereof

The invention relates to a semiconductor device and a manufacturing method thereof. The semiconductor device comprises a semiconductor substrate, and the semiconductor substrate comprises a plurality of chip areas and cutting channels used for separating the chip areas; a test structure is formed in the cutting channel, the test structure comprises an active region and a connecting structure, the active region is formed in the semiconductor substrate, the connecting structure is located at the end part of the active region, and the plurality of active regions located on the same column are sequentially connected end to end through the connecting structure; the test structure is used for bit line contact resistance test. In the embodiment of the invention, the semiconductor device is provided with a test structure for testing the bit line contact resistance in a cutting channel, and a plurality of active regions in the same column are sequentially connected end to end through a connection structure at the end part of the active region, so that the sum of the contact resistance of a plurality of bit lines in the same column and the resistance value of the active regions is obtained; the problem that measurement is inaccurate due to the fact that the shallow trench isolation structure is abnormal is solved, the testing accuracy is improved, and then the product quality is improved.
Owner:CHANGXIN MEMORY TECH INC

Blood pressure measurement method and sphygmomanometer

The invention discloses a blood pressure measurement method and a sphygmomanometer. The audio information of korotkoff sounds of a tissue to be tested and pressure information of the tissue to be tested are obtained; the multiple korotkoff sounds in the beginning time period of the audio information are screened, and the korotkoff sound with the largest decibel amplitude change among the multiplekorotkoff sounds is selected as a first korotkoff sound; the multiple korotkoff sounds in the ending time period of the audio information are screened, and the korotkoff sound with the largest decibelamplitude change among the multiple korotkoff sounds is selected as a second korotkoff sound; a first time point corresponding to the first korotkoff sound is determined, a second time point corresponding to the second korotkoff sound is determined, a first pressure value of the tissue to be tested is determined according to the first time point and the pressure information, and a second pressurevalue of the tissue to be tested is dertermined according to the second time point and the pressure information; and the first pressure value and the second pressure value are a high pressure value and a low pressure value of the tissue to be tested. According to the present invention, the problem that sphygmomanometer is affected by subjective factors and the measurement is inaccurate is solved,and the accuracy of blood pressure measurement is improved.
Owner:ZHEJIANG HEALNOC TECH CO LTD

Dual-channel redundant intelligently calibration radio frequency admittance anti-overflow liquidometer and measurement method thereof

The invention discloses a dual-channel redundant intelligently calibration radio frequency admittance anti-overflow liquidometer and a measurement method thereof. The dual-channel redundant intelligently calibration radio frequency admittance anti-overflow liquidometer comprises a transmitter board, a concentric metal sleeve, a first metal round bar, a second metal round bar, a sensor 1 and a sensor 2, wherein the first metal round bar and the second metal round bar are coaxially connected and fixed through an insulator and are assembled concentrically with the concentric metal sleeve respectively; the first metal round bar and the second metal round bar are respectively used as a first electrode rod of the sensor 1 and a second electrode rod of the sensor 2; the sensor 1 and the sensor 2respectively input detected voltages and current signals to the transmitter board, and the signals are converted by the transmitter board into liquid level signals. The liquid level height measured bythe dual-channel redundant intelligently calibration radio frequency admittance anti-overflow liquidometer disclosed by the invention has no relation to the dielectric constant of the medium, so compared with a "calculation method of liquid level height without dielectric constant compensation", the liquid level measurement is not affected by the dielectric constant of the medium, and the reliability and precision are higher.
Owner:高海 +2

PCB pin welding and drawing test device

The invention discloses a PCB pin welding and drawing test device, and belongs to the technical field of PCB test devices.The PCB pin welding and drawing test device comprises a power box, a storage cabinet is fixedly connected with the bottom of the power box, a first clamping body is installed in the middle of the top of the power box, longitudinal supports are welded to the two ends of the top of the power box, a top frame is welded to the tops of the longitudinal supports, a longitudinal power device is installed on the inner side wall of each longitudinal support, and each longitudinal support is connected with a transverse sliding rail through the corresponding longitudinal power device. A clamping body is arranged on the surface of the PCB pin welding and drawing test device, fast assembly and disassembly of a PCB can be achieved, fast assembly and disassembly of pins on the PCB can also be achieved, rebound and clamping of double springs are stable, and the pins are not prone to falling off. According to the PCB pin welding and drawing test device, a machine measurement method is adopted to replace a manual drawing test method, vertical drawing is achieved, the test precision is high, and a large amount of manpower, material resources and financial resources are saved.
Owner:深圳市金致卓科技有限公司

Instrument and apparatus insulation box

The invention discloses an instrument and apparatus insulation box. The instrument and apparatus insulation box comprises a box body; an insulating layer is arranged inside the box body in a surrounding manner; the internal bottom end of the box body is provided with color-changing silica gel; a pore plate is arranged at the top end of the color-changing silica gel; the pore plate is dismountable;the two sides of the inner wall of the box body and the two sides of the top end of the pore plate are each provided with a heating plate; each heating plate is externally provided with a heat insulating plate; a plurality of fixing rods are arranged inside the box body; the bottom end of each fixing rod is provided with a plurality of fixing devices; each fixing device comprises a strut II, a strut III, a rotating shaft, a spring and a clamping rod; the top end of each strut II is connected with the bottom end of the corresponding fixing rod; the internal bottom end of each strut II is provided with the corresponding rotating shaft; the two sides of each rotating shaft are symmetrically provided with the struts III; the bottom end of each strut III is provided with the corresponding clamping rod; each strut III is connected through the corresponding spring; the internal top end of the box body is provided with a temperature sensor; the temperature sensor is connected with a display screen at one outer side of the box body; the upper part of the display screen is provided with an indicating light; and one side of the box body is provided with a box body door.
Owner:ANHUI MUFAN ELECTRONICS TECH CO LTD

Storage cabinet stock material real-time metering method and device for tobacco production

The invention relates to a storage cabinet stock material real-time metering method and device for tobacco production. A storage cabinet stock material real-time metering system for tobacco production comprises a controller, a monitoring device, a distribution device, a storage cabinet and a discharging device. According to the scheme, materials are stacked in a specific shape in the storage cabinet, displacement of the materials is monitored by means of a ranging sensor in the production process, the volume of the storage cabinet stock materials is calculated, the mass of the storage cabinet stock materials is determined according to density of the materials, and accordingly metering of the storage cabinet stock materials is achieved. The mass of the storage cabinet stock materials is accurately measured, state information of the storage cabinet is reliably judged, guarantee is provided for statistics and tracking of the storage cabinet materials and subsequent accurate scheduling of the materials, and the problems that the quantity of materials remaining in the storage cabinet cannot be accurately measured, and accordingly production efficiency is reduced and product quality is reduced are avoided.
Owner:CHINA TOBACCO HENAN IND

Packaging structure and method of infrared thermal pile sensor

The invention discloses a packaging structure and method of an infrared thermal pile sensor. The packaging structure comprises a first substrate, a thermopile structure and a sealing cover substrate, wherein the thermopile structure is positioned on the first surface of the first substrate and includes a thermopile main body consisting of at least one group of thermocouple pairs; and the sealing cover substrate is arranged above the thermopile structure, a first cavity is formed by the sealing cover substrate and the upper surface of the thermopile structure, and a film-shaped thermistor is arranged on the sealing cover substrate. The thermistor is arranged on the sealing cover substrate so that the thermopile structure and the thermistor can be formed in the same packaging structure at the same time, integrated packaging is achieved, the process steps are shortened, the size of the infrared thermopile sensor is reduced, and the reliability of the infrared thermopile sensor is improved.
Owner:NINGBO SEMICON INT CORP

Geotechnical test air pressure consolidation permeameter and test monitoring method thereof

Disclosed are a geotechnical test air pressure consolidation permeameter and a test monitoring method thereof. The air pressure consolidation permeameter includes an air pressure loading device, a combined consolidation permeation sample device and a test index measurement device. The air pressure loading device includes a fixing base (18), a pressure supply reserve tank (35), a piston jacking pipe (15), brackets (1), a horizontal counterforce cross bridge (5), and electronic air pressure sensors (17) arranged on the pressure supply reserve tank. The combined consolidation permeation sample device includes a supporting seat (14), a base (13), a tank sleeve (10), a soil sampler (9), lower permeable stone (12), upper permeable stone (25), an inner tank pressure cover (7), an upper pressure box (8), an external threaded drainage jacking pipe (23), and a pressure rod (36). A sample cabin (11) is between the upper permeable stone and the lower permeable stone. The base (13) is provided witha water inlet channel (24). The test index measurement device includes an electronic flowmeter (13), electronic displacement sensors (16), an electronic pore water pressure gauge (26) and a permeablewater head pipe (19). The geotechnical test air pressure consolidation permeameter and the test monitoring method thereof has the advantages of small test error and convenient and fast operation.
Owner:YUNNAN URBAN & RURAL CONSTR INVESTMENT CO LTD
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