34results about How to "Reduce measurement links" patented technology

The invention discloses a wireless hollow inclusion strainmeter and a method for measuring ground stress. The wireless hollow inclusion strainmeter for measuring the ground stress is characterized in that a shell body of the wireless hollow inclusion strainmeter is sealed by epoxy resin, a base material of the shell body is composite ceramic, the wireless hollow inclusion strainmeter for measuring the ground stress comprises a strain measurement portion, an emitting portion and a guiding portion, wherein the strain measurement portion, the emitting portion and the guiding portion are all detachable and recyclable, a directional sensor, a power source and an emitting module are sequentially sealed on the rear portion of the wireless hollow inclusion strainmeter, resistance strain rosettes are inlaid in the middle along the same circumference of the wireless hollow inclusion strainmeter at intervals, and the strain measurement portion, the emitting portion and the directional portion of the wireless hollow inclusion strainmeter can be detached and separated. Three groups of strain rosettes and three groups of direction finders are arranged on the wireless hollow inclusion strainmeter. The strain rosettes and the direction finders are used for respectively transmitting collected signals to an amplifier, and then the signals enter an analog to digital (A/D) converter, analog signals are converted into digital signals, a singlechip is used for sampling, and data are sent out through a wireless module. The wireless hollow inclusion strainmeter for measuring the ground stress has integration and telemetering, and can be recovered and repeatedly used.

The invention provides a soil saturation hydraulic conductivity measuring and calculating method based on infiltration time characteristic parameters. In the method, the quantitative relation of the characteristic parameters (skewness, kurtosis and variation coefficients) of soil saturation hydraulic conductivity and infiltration time data is built on the basis of analyzing Philip-Dunne infiltration data under three soil texture conditions of clay, loam, sand and the like, and the water content change of soil before and after infiltration does not need any consideration when the method is utilized to measure and calculate the soil saturation hydraulic conductivity, and only the accumulative infiltration time which corresponds to different water levels in a Philip-Dunne infiltration meter needs to be observed, therefore simplifying the calculating process of the saturation hydraulic conductivity and increasing the measuring efficiency.

The invention discloses an air humidity measurement method with low power consumption. The method comprises the following steps of: allowing a fixed resistor and a humidity-sensitive capacitor to form a resistor-capacitor (RC) circuit, allowing the RC circuit, a comparator in a microcontroller chip and a timer module to form a measuring circuit, and respectively measuring count values of a timer in two humidity states when the humidity-sensitive capacitor is charged to certain voltage and an output end of the comparator in the microcontroller chip produces input capture interruptions of the timer in a standard humidity environment; and saving humidity values and the corresponding count values in a storage of equipment, and effectively establishing the linear relation between the humidity and a count value, so that a measured practical humidity value is accurately calculated according to the measured count value in the practical use. The measurement method is simple, low in cost and power consumption and high in measurement accuracy, precision values can be adjusted according to application requirements, the self-correction can be performed, and the industrialized batch production of temperature and humidity instruments are convenient.

The invention discloses a measurement and installation method of a plate-type ballastless track primary standard, comprising the following steps of preparing job, preliminarily locating and measuring a primary standard, anchoring the primary standard, carrying out three dimensional coordinate measurement on the primary standard, adjusting the primary standard, carrying out plane re-check measurement and smoothness check on the primary standard, carrying out altitude re-check measurement on the primary standard and sealing the primary standard. The method has small measurement transfer error, high precision, few intermediate job links of the measurement, high work efficiency, material saving and simple, convenient and rapid operation.

The invention discloses a hollow inclusion crustal stress telemetry system and a method and relates to the technical field of geology, energy, deep mineral products and underground geotechnical engineering reconnaissance survey. The hollow inclusion crustal stress telemetry system comprises a hollow inclusion strainometer and a telemetry master computer. A strain foil, an orientator, a gathering module, a transmitting module and a transmitting antenna are arranged inside the hollow inclusion strainometer which is used for measuring, gathering and transmitting strain and azimuthal angles. The telemetry master computer is composed of a receiving antenna, a receiving module, a signal processing module, a data processing module and a data outputting and displaying module. The telemetry master computer is used for receiving, processing and storing parameter information such as the strain and the azimuthal angles. Through wireless transmission long-distance telemetry, the hollow inclusion crustal stress telemetry system and the method have the advantages that the problems of the redundant wiring process of geostress survey, cable winding, drilling cooling and the like are solved, test efficiency and precision are improved, measuring cost is saved, capacity of resisting disturbance is strong, and instruments are easy and convenient to operate.

The invention relates to the technical field of water and soil loss monitoring equipment, and specifically provides an automatic muddy water weighting instrument for a water and soil loss monitoring device. The instrument comprises a weighting bottle body, a water inlet formed in the top part of the weighting bottle body, and a first siphon device arranged in the weighting bottle body, wherein the water inlet of the first siphon device is clung to the bottom part of the weighting bottle body; a weighting sensor is arranged on the weighting bottle body. With the adoption of the instrument, the data can be measured immediately, so that the working hours can be greatly saved; the observing precision is superior to the original manual observing; the measured data are close to the actual water and soil loss condition to the maximum; the instrument has a wide application prospect and popularization value in the industry.

The invention provides a calibration method and a calibration device for the moisture content of fallen leaves. The method comprises the following steps: measuring the weight W1 of a special box; putting the leaves into the special box; measuring the weight W2 of the special box with the leaves; taking out all the leaves from the special box, and heating the leaves; cooling the heated leaves, and removing condensed water; re-putting the treated leaves into the special box; measuring the weight W3 of the special box with the treated leaves; measuring the moisture content H2 in the special box through a humidity sensor; calculating a real moisture content Q of the fallen leaves, and recording the real moisture content Q of the fallen leaves and the corresponding moisture content measured value H2 as a group of data; repeatedly carrying out the steps for multiple times to obtain multiple groups of data, and analyzing to obtain a quantitative relation f between the real moisture content Q of the fallen leaves and the moisture content measured value H2; under a condition of the measured moisture content, obtaining a corresponding real moisture content of the fallen leaves according to the quantitative relation f. According to the calibration method, the measurement process of the moisture content of the fallen leaves is effectively simplified, and the measurement precision and the measurement efficiency are improved.

The invention relates to a test method of the EVA (Ethylene Vinyl Acetate) crosslinking rate of a photovoltaic solar battery pack. The EVA crosslinking rate is represented by gel content. The test method comprises the steps of: testing the crosslinking rate of the EVA of the packet by using a DSA heat flux differential analysis method, measuring the heat flux of the EVA in the process of lamination and carrying out DSC calorimetry analysis by using differential thermal analysis. The calculation method of the EVA (Ethylene Vinyl Acetate) crosslinking rate (gel conten) of the photovoltaic solar battery pack adopts the flowing formula: gel content=(H1-H2)/H1*100%, wherein H1 is heat release of raw material by unit weight, and H2 is heat release of un-crosslinked EVA by unit weight left after lamination. The invention has the advantages of high precision, less error, short test cycle and low cost.

The invention relates to a measurement and calculation method for a soil infiltration parameter of a field scale. The method comprises the steps of performing a K-S normality test on soil infiltrationparameter actual measurement data of each test point; obtaining soil infiltration parameter theoretical data obeying normal distribution; calculating a test variation function of the soil infiltration parameter theoretical data, and performing fitting on the test variation function by using a theoretical variation function model to obtain a theoretical semivariance function of the soil infiltration parameter; according to the theoretical semivariance function and a statistical eigenvalue, calculating a non-conditional simulation value Z*s of the soil infiltration parameter and a non-conditional simulation value Zs of the soil infiltration parameter of an untested position of a to-be-tested region; performing Kriging interpolation on the soil infiltration parameter actual measurement dataand the non-conditional simulation value Z*s of the soil infiltration parameter to obtain data Z*ok and Z*sok; and according to the non-conditional simulation value Zs and the data Z*ok and Z*sok, calculating a soil infiltration parameter value of the untested position of the to-be-tested region. According to the method, the technical support can be provided for optimizing ground irrigation systemdesign and improving field irrigation management level.

The invention discloses a medical measuring device for measuring the structure size in a human joint. A fixed handle and a movable handle of the medical measuring device are connected through screws, a stretching rod moves in a U-shaped groove of a boring rod, one end of the boring rod is connected with the fixed handle, one end of the stretching rod is connected with the movable handle, and the other end of the boring rod and the other end of the stretching rod are connected with a measuring ruler. The medical measuring device can be used for measuring the width and the height of the intercondylar fossa of a knee joint, the length and the diameter of an anterior cruciate ligament, the shape and the position of the ligament and the like, obtaining of clinical dissection parameters is facilitated, and the clinical effects of a patient are improved.

The invention discloses a hand measuring tool for the liquid level of a platinum channel of cover plate glass, and a use method of the tool. The tool comprises a handheld handle and a probe, wherein alimiter is arranged on the probe. When the hand measuring tool is used for measuring the liquid level in the platinum channel, the limiter is rack-mounted at the upper end of a liquid level opening of the platinum channel, and the bottom end of the probe is inserted into glass liquid, so that the liquid level can be measured. The measuring tool is simple in structure, convenient to operate, smallin measurement error and easy for reading data.

Relating to the analytical test field, the invention provides an isotope dilution quantitative detection method directed at the problem of needing an additional measurement step under the condition ofan affected to-be-detected sample's isotope ratio after adding an artificial additive to an original sample. The method is used for measuring the content of isotope B derived from an artificial additive in a to-be-detected sample, which is a mixture obtained by adding the artificial additive to the original sample, wherein the element X in the original sample at least contains isotopes A, B and C; the artificial additive contains the isotope B of element X and does not contain isotope A and isotope C. The method includes the steps of: 1) selecting a concentrated sample of isotope A as the isotope diluent, and calibrating RBD, RCD and the adding amount ND of the isotope diluent; (2) adding the isotope diluent into the to-be-detected sample, and mixing the isotope diluent with the to-be-detected sample uniformly; (3) measuring RBM and RCM; and (4) calculating the atomic number of the isotope B derived from the artificial additive in the to-be-detected sample through a formula.

The invention belongs to the technical field of bearing equipment, and particularly relates to a double-row tapered roller bearing clearance adjusting method, which comprises the following steps of: 1, measuring the sinkage of a roller when the upper row of tapered rollers of a measured bearing are self-locked, and recording the sinkage as delta H; 2, enabling a measurement meter to be in contact with the upper end surface of the inner ring of the middle upper part of the measured bearing, and adjusting the measurement meter to be + delta H; 3, placing the standard space ring between the upper inner ring and the lower inner ring of the tested bearing; 4, rotating the upper inner ring, and recording the reading of the measuring meter as X, wherein X is the actually measured axial clearance of the measured bearing; 5, calculating the actual space ring dimensional tolerance through the formula delta C1C1 = delta C0C0-(X-Ga), wherein the delta C1C1 is the actual space ring dimensional tolerance, the delta C0C0 is the theoretical tolerance of the standard space ring, and the Ga is the standard axial clearance; and 6, machining the space ring product according to the actual dimensional tolerance of the space ring to be assembled into the corresponding bearing. Only sinkage is measured, the axial clearance can be accurately adjusted, time and labor are saved, and efficiency is high.

The invention provides a method for measuring and calculating soil wetting front suction, comprising the step of establishing a quantitative relationship between the soil wetting front suction and infiltration time data characteristic parameters (the deflection, the peakedness and variation coefficient) on the basis of Philip-Dunne infiltration data analysis under the condition of three soil texture conditions of clay, loam and sandy soil. The change of water content of front and rear infiltrated soil is not need to consider and only accumulated infiltration times corresponding to different water levels in a Philip-Dunne infiltration instrument need to be observed when the method is used for measuring and calculating the soil wetting front suction, thereby simplifying the calculation process of the soil wetting front suction and improving the measuring efficiency.

The invention relates to a single open telescopic electric curtain track. The single open telescopic electric curtain track being simple in structure, convenient to install and suitable for different window widths is provided, and according to the technical scheme, the single open telescopic electric curtain track is characterized in that the single open telescopic electric curtain track is provided with a telescopic curtain track shell and a telescopic single open traction mechanism installed in the curtain track shell; the single open traction mechanism includes a motor transmission box installed at the left end of the curtain track shell and connected with a motor, a tail end bearing bracket installed at the right end of the curtain track shell, and a telescopic screw rod arranged parallel to the curtain track shell in the axial direction, one end of the telescopic screw rod is connected with the motor transmission box and connected with an output shaft of the motor through the motor transmission box, and the other end of the telescopic screw rod is connected with the tail end bearing bracket; and the telescopic screw rod is provided with a small screw rod and a large screw rod, and the large screw rod coaxially sleeves the small screw rod and is connected with the small screw rod in a threaded mode. The single open telescopic electric curtain track is suitable for the field of home decoration articles.

The invention relates to a core manufacturing method, through which cores with fissures can be manufactured, so that characteristics of fissures in an actual oil reservoir can be simulated, and accurate data can be provided for subsequent experimental work. The core manufacturing method comprises the following steps: 1) cleaning cores from a research area for oil removal; 2) trimming the end surfaces of the cores into planes; 3) carrying out saturated oil/water processing on the cores; 4) wrapping the peripheral surfaces of the cores with films for preventing overflow of water/oil from the cores, and exposing the two end surfaces of each core; and 5) applying a pressure in the radial direction of each core on the full length of the core until the fissures appear on the two end surfaces. The core manufacturing method provided by the invention has the advantages that an environment in which fluids flow in pores and fissures of shales and sandstones in actual situations can be simulated,so that accurate experimental data can be provided for oil-gas well production when the manufactured cores are used in experiments.