31results about How to "The data is accurate and stable" patented technology

The invention discloses a testing method for detecting internal ESL of a self-healing type metallized film capacitor. A special short-circuit discharging testing loop is formed by a switching cabinet,a voltage adjusting device,a transformer,a silicon stack,a protecting resistor,a high-voltage switch,a discharging device,a heavy current discharging switch,a current transformer,an oscilloscope,a connecting guiding wire,a tested sample,an accompany sample and the like,and corresponding waveforms are obtained; according to principles of electric and electronic engineering,computing of the ESL of the loop is conducted according to the waveforms,final sample ESL is obtained through a difference method,and the blank of a precise measuring and testing method of ESL of capacitors in current industries is filled.

The invention discloses a tobacco quality similarity measurement method, which measures the quality similarity of tobacco leaves and other different types of raw materials by constructing a single parameter similarity measurement function and a multi-parameter weight coefficient function. Based on the mean value of quality data of tobacco leaves from the same producing area and grade, this methodeffectively improves the measurement efficiency of tobacco quality similarity, and provides reliable data support for subsequent cigarette formula maintenance, single-material tobacco replacement or new formula research and development.

The invention discloses a recombinant RSV (Respiratory Syncytial Virus) antigenome plasmid rRSV-EGFP. The sequence of the recombinant RSV antigenome plasmid rRSV-EGFP is shown as SEQ ID No.1. The invention also discloses a recombinant RSV obtained by rescuing the plasmid and application of the recombinant RSV in screening of an RSV resisting drug. A high-throughput screening method for screening the RSV resisting drug comprises the following steps: inoculating a host cell, and adding the recombinant RSV and to-be-screened drugs; detecting the fluorescence intensity of GFP (Green Fluorescence Protein); evaluating an RSV resisting effect of the to-be-screened drugs. According to the recombinant RSV antigenome plasmid rRSV-EGFP disclosed by the invention, interaction of the recombinant RSV for expressing the GFP and the host cell and to-be-screened compounds is utilized; as the expression level of the GFP is closely related to the replication level of a virus, the antivirus effect of the compound can be analyzed by detecting the fluorescence intensity, further a high-throughput drug screening model for the RSV is established, a large-scale drug screening is realized, and a foundation is laid for research and development of the RSV-resisting drug.

The invention provides an ultraviolet and visible spectrophotometer which comprises a light source, a lens, an optical fiber, a collimating mirror, a shading cap, an integrating sphere and a spectrometer. The light emitting wavelength of the light source is within the range of 200 nm to 1000 nm. The light emitted by the light source passes through the lens and then enters from one end of the optical fiber, the other end of the optical fiber is provided with the collimating mirror, the shading cap is arranged between the collimating mirror and a sample to be detected, the light is transmitted by the optical fiber and then is emitted from the collimating mirror in parallel and enters the sample to be detected, and the light is emitted from the sample to be detected and received by the integrating sphere and transmitted to the spectrometer for analysis. The absorbance of a solid sample and a liquid sample can be measured, the shading cap can reduce the influence of ambient light on the instrument, a light path does not need to be sealed in the whole detection process, external light has no influence on the instrument, use is convenient, and data is stable and accurate. Any wave band or full wave band can be analyzed, and tests prove that the integral measurement time is shorter than 1.5 s and the measurement speed is high.

The invention discloses a novel double-beam water quality multi-parameter testing device which comprises a xenon lamp, a first optical fiber, an optical fiber collimating device, a measuring cell, anoptical fiber coupling device, a second optical fiber and a spectrograph. The light inlet of the optical fiber collimating device is connected with a light outlet of the xenon lamp through the first optical fiber. The light inlet of the measuring cell is connected with the light outlet of the optical fiber collimating device. The light inlet of the optical fiber coupling device is connected with the light outlet of the measuring cell. The light inlet of the spectrograph is connected with the light outlet of the optical fiber coupling device through the second optical fiber. Compared with the prior art, the novel double-beam water quality multi-parameter testing device can improve the comprehensiveness and accuracy of water pollutant monitoring.

The invention provides a system for detecting specific ions. The system comprises a central processing module and a sensing module, wherein the central processing module is used for sending a detection instruction for the specific ions; the sensing module is used for receiving the detection instruction and generating a detection current signal formed by the specific ions in a to-be-detected solution according to the detection instruction; the sensing module analyzes the detection current signal to detect concentration information of the specific ions in the to-be-detected solution; or the central processing module receives the detection current signal generated by the sensing module and analyzes the detection current signal to detection the concentration information of the specific ions inthe to-be-detected solution. The system for detecting the specific ions has the advantages that the concentration of each specific ion in a liquid substance is directly measured by using an electrochemical method combined with a solid-state electrode, data is accurate and stable, the measurement range is large, and the measurement accuracy is high.

The present invention discloses a roughness detecting method for the combined surface of a concrete prefabricated part. The method comprises the following steps of 1) cleaning sundries on the surfaceof a to-be-measured part before the test, selecting a suitable area, painting a layer of demoulding oil on the selected area, and fixing a stainless steel square frame on the area; 2) filling the stainless steel square frame by adopting the plasticine to enabling the parallel and level state of the surface of the stainless steel square frame; 3) removing the stainless steel square frame, and taking down the plasticine attached on the surface of the part; 4) kneading the plasticine into a whole block, weighing the plasticine in the air as m1 and accurate to 0.01 g, placing the plasticine in a mesh basket, placing the plasticine in the distilled water together with the mesh basket, weighing the plasticine in the water as m2 and accurate to 0.01 g, and calculating the roughness of the plasticine. According to the roughness detecting method for the combined surface of the concrete prefabricated part, the roughness of the concrete prefabricated part, in the horizontal, vertical and inclineddirections, can be tested.

The invention relates to material test equipment and test method, in particular to in-massif large scale pressure test equipment used for large scale material test and a test method thereof. The test equipment comprises a pressure machine set, a test device and a base as well as a cave; wherein the cave is arranged in a massif, the pressure machine set, the test device and the base are arranged in the cave, testing material is arranged on the base, and the pressure machine set also comprises at least one pressure machine arranged at the top part of the cave. The in-massif large scale pressuretest method includes that a place is selected, large scale test equipment is mounted, testing material is conveyed, the testing material is fixed, a pressure device is utilized to test the testing material, and relevant data is recorded. The invention utilizes natural high quality massif to substitute the structural framing of large scale equipment and has the advantages that rigidity is high, fatigue is difficult, cost is low, and the obtained pressure is accurate and stable.

The invention discloses an analytical method for pyridine content in a fire retardant. A standard sample employs acetone as a solvent and employs decane as an internal standard substance. By utilizing an HP-1 capillary column and a hydrogen flame ionization detector, the pyridine content in a fire retardant is detected by a gas chromatography and the pyridine in the fire retardant is separated by the gas chromatography. The analytical method is selected out after repeated trial screening. By utilizing an HP-1 capillary column and a gas chromatograph with a hydrogen flame ionization detector, by employing acetone as a solvent and decane as an internal standard substance, accurate quantitative detection analysis of pyridine in a fire retardant product can be carried out, the data is stable and accurate and the method is rapid and convenient.

The present invention provides an installation protection device for a sensor and a vibration detection device for an air conditioner, wherein the installation protection device includes an insulating mounting frame, and the insulating mounting frame includes a mounting plate for installing the sensor and a mounting plate for suspending the end of the sensor to a waiting area. The support part at the installation place, the support part is connected with the installation board and protrudes from one side of the installation board. The installation protection device provided by the present invention is used to set the sensor on the object to be tested, and the sensor and the installation surface are insulated, so that the static electricity generated by the tested object will not be transmitted to the sensor, and the test accuracy of the sensor will not be affected. Therefore, the installation protection device of the present invention can ensure the testing accuracy of the sensor, so that the data measured by the sensor is stable and accurate. In addition, the mounting plate also has a heat insulation effect, and the support part has a heat dissipation effect, so the installation protection device of the present invention can also prevent the high temperature of the object to be tested from being transmitted to the sensor, and avoid damage to the sensor due to excessive temperature.

The present application discloses a mobile imaging device based on a capacitance tomography sensor, including: a capacitance tomography sensor, a moving fixture and an auxiliary fixture, and the moving fixture and the auxiliary fixture hold the sample to be tested or the capacitance tomography sensor respectively; The moving fixture performs measurement movement relative to the auxiliary fixture; the electric capacitance tomography sensor is used to measure the section to be measured of the sample to be tested, and obtain a two-dimensional image of each section of the sample to be tested. When the moving speed of the sample to be measured is fast, it is necessary to increase the number of measured sections and reduce the measurement interval. Using this device for imaging measurement can effectively improve the quality of the three-dimensional reconstruction image and greatly increase the movement of the sample that can be measured by the 3D ECT sensor. speed range.

The invention provides a specific ion detection method and system, a computer readable storage medium and equipment. The method includes the steps of outputting a charge instruction for a controller;after a specific ion detection sensor is charged by the controller, acquiring first detection current output by the controller to the specific ion detection sensor; outputting a discharge instructionfor the controller; acquiring second detection current output by the controller to the specific ion detection sensor when the specific ion detection sensor starts to discharge; analyzing the concentration information of specific ions adsorbed by the specific ion detection sensor according to the first detection current and the second detection current. According to the method, the concentration ofall specific ions in a liquid substance can be directly measured by combining an electrochemical method with a solid electrode, the data is accurate and stable, the measurement range is large, and the measurement precision is high.

The invention discloses a level bubble scale wheel disc combined type railway gauging rule. A level bubble and a scale wheel disc are combined together, and the railway gauging rule realizes a measurement function. The railway gauging rule is provided with a horizontal slide block assembly, a scale wheel disc assembly, a handwheel assembly and a turning fixed pulley, the minification of a horizontal slide block is equal to the magnification of the scale wheel disc assembly, and thus measurement accuracy is guaranteed. According to the invention, fewer parts are designed, the structure is simple, the parts are installed inside a ruler body, the bump resistance is high, the performance is stable, there are fewer faults, and the railway gauging rule is particularly suitable for a railway harsh onsite application environment.

The invention discloses a tobacco leaf quality similarity measurement method, which measures the quality similarity of the tobacco leaves to be evaluated and other different types of raw tobacco leaves by constructing a single-parameter similarity measurement function and a multi-parameter weight coefficient function. This method is based on the average value of quality data of tobacco leaves of the same origin and grade, which effectively improves the efficiency of tobacco leaf quality similarity measurement, and provides reliable data support for subsequent cigarette formula maintenance, single tobacco replacement or new formula development.

The invention provides a detection system for specific ions, comprising: a central processing module, configured to send detection instructions for the specific ions; a sensing module, configured to receive the detection instructions, and generate The detection current signal formed by the specific ion in the solution to be detected; wherein, the sensing module analyzes the detection current signal to detect the concentration information of the specific ion in the solution to be detected; or the central processing module receives the sensor The detection current signal generated by the module is analyzed to detect the concentration information of the specific ion in the solution to be detected. The specific ion detection system of the present invention uses an electrochemical method combined with a solid electrode to directly measure the concentration of each specific ion in a liquid substance, the data is accurate and stable, the measurement range is large, and the measurement accuracy is high.

The invention discloses a heat transmission bridge type sensor for measuring erosion and deposition depth on the periphery of a bridge steel pipe pile. The heat transmission bridge type sensor for measuring the erosion and deposition depth on the periphery of the bridge steel pipe pile is based on the principle that a heat source and temperature sensing points are located at the two ends of a heat transmission bridge respectively, the heat emitted by the heat source is transmitted to the temperature sensing points through the heat transmission bridge, and when the heat transmission bridge is located in a water body, the heat loss is in positive correlation with the water velocity and is larger than that in a soil body obviously. The heat transmission bridge type sensor for measuring the erosion and deposition depth on the periphery of the bridge steel pipe pile comprises a shell body, a heat emitting block, temperature probes and other components. The heat emitting block is arranged in the center of the side wall of the inner side of the shell body, and the temperature probes are arranged on the middle points of the four edges of the shell body respectively. The heat emitting block is served as the heat source, and the shell body is served as the heat transmission bridge and transmits heat to the temperature sensors (the temperature sensing points). Rated currents are input to enable the heating block to emit heat continuously, and whether the environment where the sensor located is the water body or the soil body can be distinguished simply by measuring the temperature changing speed and the temperature changing range of the temperature probes in the heating process. A plurality of sensors are arranged at the positions of different depths on the pile body of the steel pipe pile, the boundary surface of the water body and the soil body can be distinguished, and the erosion and deposition depth on the periphery of the bridge steel pipe pile can be determined finally.